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1
/*
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 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of FFmpeg.
6
 *
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 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
21

    
22
/**
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 * @file h264.c
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 * H.264 / AVC / MPEG4 part10 codec.
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 * @author Michael Niedermayer <michaelni@gmx.at>
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 */
27

    
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#include "dsputil.h"
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#include "avcodec.h"
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#include "mpegvideo.h"
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#include "h264.h"
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#include "h264data.h"
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#include "h264_parser.h"
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#include "golomb.h"
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#include "rectangle.h"
36

    
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#include "cabac.h"
38

    
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//#undef NDEBUG
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#include <assert.h>
41

    
42
/**
43
 * Value of Picture.reference when Picture is not a reference picture, but
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 * is held for delayed output.
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 */
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#define DELAYED_PIC_REF 4
47

    
48
static VLC coeff_token_vlc[4];
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static VLC chroma_dc_coeff_token_vlc;
50

    
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static VLC total_zeros_vlc[15];
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static VLC chroma_dc_total_zeros_vlc[3];
53

    
54
static VLC run_vlc[6];
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static VLC run7_vlc;
56

    
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static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
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static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
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static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
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static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
61

    
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static av_always_inline uint32_t pack16to32(int a, int b){
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#ifdef WORDS_BIGENDIAN
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   return (b&0xFFFF) + (a<<16);
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#else
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   return (a&0xFFFF) + (b<<16);
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#endif
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}
69

    
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const uint8_t ff_rem6[52]={
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0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
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};
73

    
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const uint8_t ff_div6[52]={
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
76
};
77

    
78

    
79
static void fill_caches(H264Context *h, int mb_type, int for_deblock){
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    MpegEncContext * const s = &h->s;
81
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
82
    int topleft_xy, top_xy, topright_xy, left_xy[2];
83
    int topleft_type, top_type, topright_type, left_type[2];
84
    int left_block[8];
85
    int topleft_partition= -1;
86
    int i;
87

    
88
    top_xy     = mb_xy  - (s->mb_stride << FIELD_PICTURE);
89

    
90
    //FIXME deblocking could skip the intra and nnz parts.
91
    if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
92
        return;
93

    
94
    /* Wow, what a mess, why didn't they simplify the interlacing & intra
95
     * stuff, I can't imagine that these complex rules are worth it. */
96

    
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    topleft_xy = top_xy - 1;
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    topright_xy= top_xy + 1;
99
    left_xy[1] = left_xy[0] = mb_xy-1;
100
    left_block[0]= 0;
101
    left_block[1]= 1;
102
    left_block[2]= 2;
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    left_block[3]= 3;
104
    left_block[4]= 7;
105
    left_block[5]= 10;
106
    left_block[6]= 8;
107
    left_block[7]= 11;
108
    if(FRAME_MBAFF){
109
        const int pair_xy          = s->mb_x     + (s->mb_y & ~1)*s->mb_stride;
110
        const int top_pair_xy      = pair_xy     - s->mb_stride;
111
        const int topleft_pair_xy  = top_pair_xy - 1;
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        const int topright_pair_xy = top_pair_xy + 1;
113
        const int topleft_mb_frame_flag  = !IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
114
        const int top_mb_frame_flag      = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
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        const int topright_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
116
        const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
117
        const int curr_mb_frame_flag = !IS_INTERLACED(mb_type);
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        const int bottom = (s->mb_y & 1);
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        tprintf(s->avctx, "fill_caches: curr_mb_frame_flag:%d, left_mb_frame_flag:%d, topleft_mb_frame_flag:%d, top_mb_frame_flag:%d, topright_mb_frame_flag:%d\n", curr_mb_frame_flag, left_mb_frame_flag, topleft_mb_frame_flag, top_mb_frame_flag, topright_mb_frame_flag);
120
        if (bottom
121
                ? !curr_mb_frame_flag // bottom macroblock
122
                : (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
123
                ) {
124
            top_xy -= s->mb_stride;
125
        }
126
        if (bottom
127
                ? !curr_mb_frame_flag // bottom macroblock
128
                : (!curr_mb_frame_flag && !topleft_mb_frame_flag) // top macroblock
129
                ) {
130
            topleft_xy -= s->mb_stride;
131
        } else if(bottom && curr_mb_frame_flag && !left_mb_frame_flag) {
132
            topleft_xy += s->mb_stride;
133
            // take topleft mv from the middle of the mb, as opposed to all other modes which use the bottom-right partition
134
            topleft_partition = 0;
135
        }
136
        if (bottom
137
                ? !curr_mb_frame_flag // bottom macroblock
138
                : (!curr_mb_frame_flag && !topright_mb_frame_flag) // top macroblock
139
                ) {
140
            topright_xy -= s->mb_stride;
141
        }
142
        if (left_mb_frame_flag != curr_mb_frame_flag) {
143
            left_xy[1] = left_xy[0] = pair_xy - 1;
144
            if (curr_mb_frame_flag) {
145
                if (bottom) {
146
                    left_block[0]= 2;
147
                    left_block[1]= 2;
148
                    left_block[2]= 3;
149
                    left_block[3]= 3;
150
                    left_block[4]= 8;
151
                    left_block[5]= 11;
152
                    left_block[6]= 8;
153
                    left_block[7]= 11;
154
                } else {
155
                    left_block[0]= 0;
156
                    left_block[1]= 0;
157
                    left_block[2]= 1;
158
                    left_block[3]= 1;
159
                    left_block[4]= 7;
160
                    left_block[5]= 10;
161
                    left_block[6]= 7;
162
                    left_block[7]= 10;
163
                }
164
            } else {
165
                left_xy[1] += s->mb_stride;
166
                //left_block[0]= 0;
167
                left_block[1]= 2;
168
                left_block[2]= 0;
169
                left_block[3]= 2;
170
                //left_block[4]= 7;
171
                left_block[5]= 10;
172
                left_block[6]= 7;
173
                left_block[7]= 10;
174
            }
175
        }
176
    }
177

    
178
    h->top_mb_xy = top_xy;
179
    h->left_mb_xy[0] = left_xy[0];
180
    h->left_mb_xy[1] = left_xy[1];
181
    if(for_deblock){
182
        topleft_type = 0;
183
        topright_type = 0;
184
        top_type     = h->slice_table[top_xy     ] < 255 ? s->current_picture.mb_type[top_xy]     : 0;
185
        left_type[0] = h->slice_table[left_xy[0] ] < 255 ? s->current_picture.mb_type[left_xy[0]] : 0;
186
        left_type[1] = h->slice_table[left_xy[1] ] < 255 ? s->current_picture.mb_type[left_xy[1]] : 0;
187

    
188
        if(FRAME_MBAFF && !IS_INTRA(mb_type)){
189
            int list;
190
            int v = *(uint16_t*)&h->non_zero_count[mb_xy][14];
191
            for(i=0; i<16; i++)
192
                h->non_zero_count_cache[scan8[i]] = (v>>i)&1;
193
            for(list=0; list<h->list_count; list++){
194
                if(USES_LIST(mb_type,list)){
195
                    uint32_t *src = (uint32_t*)s->current_picture.motion_val[list][h->mb2b_xy[mb_xy]];
196
                    uint32_t *dst = (uint32_t*)h->mv_cache[list][scan8[0]];
197
                    int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
198
                    for(i=0; i<4; i++, dst+=8, src+=h->b_stride){
199
                        dst[0] = src[0];
200
                        dst[1] = src[1];
201
                        dst[2] = src[2];
202
                        dst[3] = src[3];
203
                    }
204
                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
205
                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = pack16to32(ref[0],ref[1])*0x0101;
206
                    ref += h->b8_stride;
207
                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
208
                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = pack16to32(ref[0],ref[1])*0x0101;
209
                }else{
210
                    fill_rectangle(&h-> mv_cache[list][scan8[ 0]], 4, 4, 8, 0, 4);
211
                    fill_rectangle(&h->ref_cache[list][scan8[ 0]], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1);
212
                }
213
            }
214
        }
215
    }else{
216
        topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
217
        top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
218
        topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
219
        left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
220
        left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
221
    }
222

    
223
    if(IS_INTRA(mb_type)){
224
        h->topleft_samples_available=
225
        h->top_samples_available=
226
        h->left_samples_available= 0xFFFF;
227
        h->topright_samples_available= 0xEEEA;
228

    
229
        if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
230
            h->topleft_samples_available= 0xB3FF;
231
            h->top_samples_available= 0x33FF;
232
            h->topright_samples_available= 0x26EA;
233
        }
234
        for(i=0; i<2; i++){
235
            if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
236
                h->topleft_samples_available&= 0xDF5F;
237
                h->left_samples_available&= 0x5F5F;
238
            }
239
        }
240

    
241
        if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
242
            h->topleft_samples_available&= 0x7FFF;
243

    
244
        if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
245
            h->topright_samples_available&= 0xFBFF;
246

    
247
        if(IS_INTRA4x4(mb_type)){
248
            if(IS_INTRA4x4(top_type)){
249
                h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
250
                h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
251
                h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
252
                h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
253
            }else{
254
                int pred;
255
                if(!top_type || (IS_INTER(top_type) && h->pps.constrained_intra_pred))
256
                    pred= -1;
257
                else{
258
                    pred= 2;
259
                }
260
                h->intra4x4_pred_mode_cache[4+8*0]=
261
                h->intra4x4_pred_mode_cache[5+8*0]=
262
                h->intra4x4_pred_mode_cache[6+8*0]=
263
                h->intra4x4_pred_mode_cache[7+8*0]= pred;
264
            }
265
            for(i=0; i<2; i++){
266
                if(IS_INTRA4x4(left_type[i])){
267
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
268
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
269
                }else{
270
                    int pred;
271
                    if(!left_type[i] || (IS_INTER(left_type[i]) && h->pps.constrained_intra_pred))
272
                        pred= -1;
273
                    else{
274
                        pred= 2;
275
                    }
276
                    h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
277
                    h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
278
                }
279
            }
280
        }
281
    }
282

    
283

    
284
/*
285
0 . T T. T T T T
286
1 L . .L . . . .
287
2 L . .L . . . .
288
3 . T TL . . . .
289
4 L . .L . . . .
290
5 L . .. . . . .
291
*/
292
//FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
293
    if(top_type){
294
        h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
295
        h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
296
        h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
297
        h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
298

    
299
        h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
300
        h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
301

    
302
        h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
303
        h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
304

    
305
    }else{
306
        h->non_zero_count_cache[4+8*0]=
307
        h->non_zero_count_cache[5+8*0]=
308
        h->non_zero_count_cache[6+8*0]=
309
        h->non_zero_count_cache[7+8*0]=
310

    
311
        h->non_zero_count_cache[1+8*0]=
312
        h->non_zero_count_cache[2+8*0]=
313

    
314
        h->non_zero_count_cache[1+8*3]=
315
        h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
316

    
317
    }
318

    
319
    for (i=0; i<2; i++) {
320
        if(left_type[i]){
321
            h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
322
            h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
323
            h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
324
            h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
325
        }else{
326
            h->non_zero_count_cache[3+8*1 + 2*8*i]=
327
            h->non_zero_count_cache[3+8*2 + 2*8*i]=
328
            h->non_zero_count_cache[0+8*1 +   8*i]=
329
            h->non_zero_count_cache[0+8*4 +   8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
330
        }
331
    }
332

    
333
    if( h->pps.cabac ) {
334
        // top_cbp
335
        if(top_type) {
336
            h->top_cbp = h->cbp_table[top_xy];
337
        } else if(IS_INTRA(mb_type)) {
338
            h->top_cbp = 0x1C0;
339
        } else {
340
            h->top_cbp = 0;
341
        }
342
        // left_cbp
343
        if (left_type[0]) {
344
            h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
345
        } else if(IS_INTRA(mb_type)) {
346
            h->left_cbp = 0x1C0;
347
        } else {
348
            h->left_cbp = 0;
349
        }
350
        if (left_type[0]) {
351
            h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
352
        }
353
        if (left_type[1]) {
354
            h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
355
        }
356
    }
357

    
358
#if 1
359
    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
360
        int list;
361
        for(list=0; list<h->list_count; list++){
362
            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
363
                /*if(!h->mv_cache_clean[list]){
364
                    memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
365
                    memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
366
                    h->mv_cache_clean[list]= 1;
367
                }*/
368
                continue;
369
            }
370
            h->mv_cache_clean[list]= 0;
371

    
372
            if(USES_LIST(top_type, list)){
373
                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
374
                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
375
                *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
376
                *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
377
                *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
378
                *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
379
                h->ref_cache[list][scan8[0] + 0 - 1*8]=
380
                h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
381
                h->ref_cache[list][scan8[0] + 2 - 1*8]=
382
                h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
383
            }else{
384
                *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
385
                *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
386
                *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
387
                *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
388
                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
389
            }
390

    
391
            for(i=0; i<2; i++){
392
                int cache_idx = scan8[0] - 1 + i*2*8;
393
                if(USES_LIST(left_type[i], list)){
394
                    const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
395
                    const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
396
                    *(uint32_t*)h->mv_cache[list][cache_idx  ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
397
                    *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
398
                    h->ref_cache[list][cache_idx  ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
399
                    h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
400
                }else{
401
                    *(uint32_t*)h->mv_cache [list][cache_idx  ]=
402
                    *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
403
                    h->ref_cache[list][cache_idx  ]=
404
                    h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
405
                }
406
            }
407

    
408
            if((for_deblock || (IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred)) && !FRAME_MBAFF)
409
                continue;
410

    
411
            if(USES_LIST(topleft_type, list)){
412
                const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
413
                const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
414
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
415
                h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
416
            }else{
417
                *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
418
                h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
419
            }
420

    
421
            if(USES_LIST(topright_type, list)){
422
                const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
423
                const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
424
                *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
425
                h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
426
            }else{
427
                *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
428
                h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
429
            }
430

    
431
            if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
432
                continue;
433

    
434
            h->ref_cache[list][scan8[5 ]+1] =
435
            h->ref_cache[list][scan8[7 ]+1] =
436
            h->ref_cache[list][scan8[13]+1] =  //FIXME remove past 3 (init somewhere else)
437
            h->ref_cache[list][scan8[4 ]] =
438
            h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
439
            *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
440
            *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
441
            *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
442
            *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
443
            *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
444

    
445
            if( h->pps.cabac ) {
446
                /* XXX beurk, Load mvd */
447
                if(USES_LIST(top_type, list)){
448
                    const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
449
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
450
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
451
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
452
                    *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
453
                }else{
454
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
455
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
456
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
457
                    *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
458
                }
459
                if(USES_LIST(left_type[0], list)){
460
                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
461
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
462
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
463
                }else{
464
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
465
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
466
                }
467
                if(USES_LIST(left_type[1], list)){
468
                    const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
469
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
470
                    *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
471
                }else{
472
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
473
                    *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
474
                }
475
                *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
476
                *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
477
                *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
478
                *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
479
                *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
480

    
481
                if(h->slice_type == FF_B_TYPE){
482
                    fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
483

    
484
                    if(IS_DIRECT(top_type)){
485
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
486
                    }else if(IS_8X8(top_type)){
487
                        int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
488
                        h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
489
                        h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
490
                    }else{
491
                        *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
492
                    }
493

    
494
                    if(IS_DIRECT(left_type[0]))
495
                        h->direct_cache[scan8[0] - 1 + 0*8]= 1;
496
                    else if(IS_8X8(left_type[0]))
497
                        h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
498
                    else
499
                        h->direct_cache[scan8[0] - 1 + 0*8]= 0;
500

    
501
                    if(IS_DIRECT(left_type[1]))
502
                        h->direct_cache[scan8[0] - 1 + 2*8]= 1;
503
                    else if(IS_8X8(left_type[1]))
504
                        h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
505
                    else
506
                        h->direct_cache[scan8[0] - 1 + 2*8]= 0;
507
                }
508
            }
509

    
510
            if(FRAME_MBAFF){
511
#define MAP_MVS\
512
                    MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
513
                    MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
514
                    MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
515
                    MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
516
                    MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
517
                    MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
518
                    MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
519
                    MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
520
                    MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
521
                    MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
522
                if(MB_FIELD){
523
#define MAP_F2F(idx, mb_type)\
524
                    if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
525
                        h->ref_cache[list][idx] <<= 1;\
526
                        h->mv_cache[list][idx][1] /= 2;\
527
                        h->mvd_cache[list][idx][1] /= 2;\
528
                    }
529
                    MAP_MVS
530
#undef MAP_F2F
531
                }else{
532
#define MAP_F2F(idx, mb_type)\
533
                    if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
534
                        h->ref_cache[list][idx] >>= 1;\
535
                        h->mv_cache[list][idx][1] <<= 1;\
536
                        h->mvd_cache[list][idx][1] <<= 1;\
537
                    }
538
                    MAP_MVS
539
#undef MAP_F2F
540
                }
541
            }
542
        }
543
    }
544
#endif
545

    
546
    h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
547
}
548

    
549
static inline void write_back_intra_pred_mode(H264Context *h){
550
    MpegEncContext * const s = &h->s;
551
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
552

    
553
    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
554
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
555
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
556
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
557
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
558
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
559
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
560
}
561

    
562
/**
563
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
564
 */
565
static inline int check_intra4x4_pred_mode(H264Context *h){
566
    MpegEncContext * const s = &h->s;
567
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
568
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
569
    int i;
570

    
571
    if(!(h->top_samples_available&0x8000)){
572
        for(i=0; i<4; i++){
573
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
574
            if(status<0){
575
                av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
576
                return -1;
577
            } else if(status){
578
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
579
            }
580
        }
581
    }
582

    
583
    if(!(h->left_samples_available&0x8000)){
584
        for(i=0; i<4; i++){
585
            int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
586
            if(status<0){
587
                av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
588
                return -1;
589
            } else if(status){
590
                h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
591
            }
592
        }
593
    }
594

    
595
    return 0;
596
} //FIXME cleanup like next
597

    
598
/**
599
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
600
 */
601
static inline int check_intra_pred_mode(H264Context *h, int mode){
602
    MpegEncContext * const s = &h->s;
603
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
604
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
605

    
606
    if(mode > 6U) {
607
        av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
608
        return -1;
609
    }
610

    
611
    if(!(h->top_samples_available&0x8000)){
612
        mode= top[ mode ];
613
        if(mode<0){
614
            av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
615
            return -1;
616
        }
617
    }
618

    
619
    if(!(h->left_samples_available&0x8000)){
620
        mode= left[ mode ];
621
        if(mode<0){
622
            av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
623
            return -1;
624
        }
625
    }
626

    
627
    return mode;
628
}
629

    
630
/**
631
 * gets the predicted intra4x4 prediction mode.
632
 */
633
static inline int pred_intra_mode(H264Context *h, int n){
634
    const int index8= scan8[n];
635
    const int left= h->intra4x4_pred_mode_cache[index8 - 1];
636
    const int top = h->intra4x4_pred_mode_cache[index8 - 8];
637
    const int min= FFMIN(left, top);
638

    
639
    tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
640

    
641
    if(min<0) return DC_PRED;
642
    else      return min;
643
}
644

    
645
static inline void write_back_non_zero_count(H264Context *h){
646
    MpegEncContext * const s = &h->s;
647
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
648

    
649
    h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
650
    h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
651
    h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
652
    h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
653
    h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
654
    h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
655
    h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
656

    
657
    h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
658
    h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
659
    h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
660

    
661
    h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
662
    h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
663
    h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
664

    
665
    if(FRAME_MBAFF){
666
        // store all luma nnzs, for deblocking
667
        int v = 0, i;
668
        for(i=0; i<16; i++)
669
            v += (!!h->non_zero_count_cache[scan8[i]]) << i;
670
        *(uint16_t*)&h->non_zero_count[mb_xy][14] = v;
671
    }
672
}
673

    
674
/**
675
 * gets the predicted number of non zero coefficients.
676
 * @param n block index
677
 */
678
static inline int pred_non_zero_count(H264Context *h, int n){
679
    const int index8= scan8[n];
680
    const int left= h->non_zero_count_cache[index8 - 1];
681
    const int top = h->non_zero_count_cache[index8 - 8];
682
    int i= left + top;
683

    
684
    if(i<64) i= (i+1)>>1;
685

    
686
    tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
687

    
688
    return i&31;
689
}
690

    
691
static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
692
    const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
693
    MpegEncContext *s = &h->s;
694

    
695
    /* there is no consistent mapping of mvs to neighboring locations that will
696
     * make mbaff happy, so we can't move all this logic to fill_caches */
697
    if(FRAME_MBAFF){
698
        const uint32_t *mb_types = s->current_picture_ptr->mb_type;
699
        const int16_t *mv;
700
        *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
701
        *C = h->mv_cache[list][scan8[0]-2];
702

    
703
        if(!MB_FIELD
704
           && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
705
            int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
706
            if(IS_INTERLACED(mb_types[topright_xy])){
707
#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
708
                const int x4 = X4, y4 = Y4;\
709
                const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
710
                if(!USES_LIST(mb_type,list))\
711
                    return LIST_NOT_USED;\
712
                mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
713
                h->mv_cache[list][scan8[0]-2][0] = mv[0];\
714
                h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
715
                return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
716

    
717
                SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
718
            }
719
        }
720
        if(topright_ref == PART_NOT_AVAILABLE
721
           && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
722
           && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
723
            if(!MB_FIELD
724
               && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
725
                SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
726
            }
727
            if(MB_FIELD
728
               && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
729
               && i >= scan8[0]+8){
730
                // leftshift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's ok.
731
                SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
732
            }
733
        }
734
#undef SET_DIAG_MV
735
    }
736

    
737
    if(topright_ref != PART_NOT_AVAILABLE){
738
        *C= h->mv_cache[list][ i - 8 + part_width ];
739
        return topright_ref;
740
    }else{
741
        tprintf(s->avctx, "topright MV not available\n");
742

    
743
        *C= h->mv_cache[list][ i - 8 - 1 ];
744
        return h->ref_cache[list][ i - 8 - 1 ];
745
    }
746
}
747

    
748
/**
749
 * gets the predicted MV.
750
 * @param n the block index
751
 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
752
 * @param mx the x component of the predicted motion vector
753
 * @param my the y component of the predicted motion vector
754
 */
755
static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
756
    const int index8= scan8[n];
757
    const int top_ref=      h->ref_cache[list][ index8 - 8 ];
758
    const int left_ref=     h->ref_cache[list][ index8 - 1 ];
759
    const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
760
    const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
761
    const int16_t * C;
762
    int diagonal_ref, match_count;
763

    
764
    assert(part_width==1 || part_width==2 || part_width==4);
765

    
766
/* mv_cache
767
  B . . A T T T T
768
  U . . L . . , .
769
  U . . L . . . .
770
  U . . L . . , .
771
  . . . L . . . .
772
*/
773

    
774
    diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
775
    match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
776
    tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
777
    if(match_count > 1){ //most common
778
        *mx= mid_pred(A[0], B[0], C[0]);
779
        *my= mid_pred(A[1], B[1], C[1]);
780
    }else if(match_count==1){
781
        if(left_ref==ref){
782
            *mx= A[0];
783
            *my= A[1];
784
        }else if(top_ref==ref){
785
            *mx= B[0];
786
            *my= B[1];
787
        }else{
788
            *mx= C[0];
789
            *my= C[1];
790
        }
791
    }else{
792
        if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
793
            *mx= A[0];
794
            *my= A[1];
795
        }else{
796
            *mx= mid_pred(A[0], B[0], C[0]);
797
            *my= mid_pred(A[1], B[1], C[1]);
798
        }
799
    }
800

    
801
    tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1],                    diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
802
}
803

    
804
/**
805
 * gets the directionally predicted 16x8 MV.
806
 * @param n the block index
807
 * @param mx the x component of the predicted motion vector
808
 * @param my the y component of the predicted motion vector
809
 */
810
static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
811
    if(n==0){
812
        const int top_ref=      h->ref_cache[list][ scan8[0] - 8 ];
813
        const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
814

    
815
        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
816

    
817
        if(top_ref == ref){
818
            *mx= B[0];
819
            *my= B[1];
820
            return;
821
        }
822
    }else{
823
        const int left_ref=     h->ref_cache[list][ scan8[8] - 1 ];
824
        const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
825

    
826
        tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
827

    
828
        if(left_ref == ref){
829
            *mx= A[0];
830
            *my= A[1];
831
            return;
832
        }
833
    }
834

    
835
    //RARE
836
    pred_motion(h, n, 4, list, ref, mx, my);
837
}
838

    
839
/**
840
 * gets the directionally predicted 8x16 MV.
841
 * @param n the block index
842
 * @param mx the x component of the predicted motion vector
843
 * @param my the y component of the predicted motion vector
844
 */
845
static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
846
    if(n==0){
847
        const int left_ref=      h->ref_cache[list][ scan8[0] - 1 ];
848
        const int16_t * const A=  h->mv_cache[list][ scan8[0] - 1 ];
849

    
850
        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
851

    
852
        if(left_ref == ref){
853
            *mx= A[0];
854
            *my= A[1];
855
            return;
856
        }
857
    }else{
858
        const int16_t * C;
859
        int diagonal_ref;
860

    
861
        diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
862

    
863
        tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
864

    
865
        if(diagonal_ref == ref){
866
            *mx= C[0];
867
            *my= C[1];
868
            return;
869
        }
870
    }
871

    
872
    //RARE
873
    pred_motion(h, n, 2, list, ref, mx, my);
874
}
875

    
876
static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
877
    const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
878
    const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
879

    
880
    tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
881

    
882
    if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
883
       || (top_ref == 0  && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
884
       || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
885

    
886
        *mx = *my = 0;
887
        return;
888
    }
889

    
890
    pred_motion(h, 0, 4, 0, 0, mx, my);
891

    
892
    return;
893
}
894

    
895
static inline void direct_dist_scale_factor(H264Context * const h){
896
    const int poc = h->s.current_picture_ptr->poc;
897
    const int poc1 = h->ref_list[1][0].poc;
898
    int i;
899
    for(i=0; i<h->ref_count[0]; i++){
900
        int poc0 = h->ref_list[0][i].poc;
901
        int td = av_clip(poc1 - poc0, -128, 127);
902
        if(td == 0 /* FIXME || pic0 is a long-term ref */){
903
            h->dist_scale_factor[i] = 256;
904
        }else{
905
            int tb = av_clip(poc - poc0, -128, 127);
906
            int tx = (16384 + (FFABS(td) >> 1)) / td;
907
            h->dist_scale_factor[i] = av_clip((tb*tx + 32) >> 6, -1024, 1023);
908
        }
909
    }
910
    if(FRAME_MBAFF){
911
        for(i=0; i<h->ref_count[0]; i++){
912
            h->dist_scale_factor_field[2*i] =
913
            h->dist_scale_factor_field[2*i+1] = h->dist_scale_factor[i];
914
        }
915
    }
916
}
917
static inline void direct_ref_list_init(H264Context * const h){
918
    MpegEncContext * const s = &h->s;
919
    Picture * const ref1 = &h->ref_list[1][0];
920
    Picture * const cur = s->current_picture_ptr;
921
    int list, i, j;
922
    if(cur->pict_type == FF_I_TYPE)
923
        cur->ref_count[0] = 0;
924
    if(cur->pict_type != FF_B_TYPE)
925
        cur->ref_count[1] = 0;
926
    for(list=0; list<2; list++){
927
        cur->ref_count[list] = h->ref_count[list];
928
        for(j=0; j<h->ref_count[list]; j++)
929
            cur->ref_poc[list][j] = h->ref_list[list][j].poc;
930
    }
931
    if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
932
        return;
933
    for(list=0; list<2; list++){
934
        for(i=0; i<ref1->ref_count[list]; i++){
935
            const int poc = ref1->ref_poc[list][i];
936
            h->map_col_to_list0[list][i] = 0; /* bogus; fills in for missing frames */
937
            for(j=0; j<h->ref_count[list]; j++)
938
                if(h->ref_list[list][j].poc == poc){
939
                    h->map_col_to_list0[list][i] = j;
940
                    break;
941
                }
942
        }
943
    }
944
    if(FRAME_MBAFF){
945
        for(list=0; list<2; list++){
946
            for(i=0; i<ref1->ref_count[list]; i++){
947
                j = h->map_col_to_list0[list][i];
948
                h->map_col_to_list0_field[list][2*i] = 2*j;
949
                h->map_col_to_list0_field[list][2*i+1] = 2*j+1;
950
            }
951
        }
952
    }
953
}
954

    
955
static inline void pred_direct_motion(H264Context * const h, int *mb_type){
956
    MpegEncContext * const s = &h->s;
957
    const int mb_xy =   s->mb_x +   s->mb_y*s->mb_stride;
958
    const int b8_xy = 2*s->mb_x + 2*s->mb_y*h->b8_stride;
959
    const int b4_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
960
    const int mb_type_col = h->ref_list[1][0].mb_type[mb_xy];
961
    const int16_t (*l1mv0)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[0][b4_xy];
962
    const int16_t (*l1mv1)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[1][b4_xy];
963
    const int8_t *l1ref0 = &h->ref_list[1][0].ref_index[0][b8_xy];
964
    const int8_t *l1ref1 = &h->ref_list[1][0].ref_index[1][b8_xy];
965
    const int is_b8x8 = IS_8X8(*mb_type);
966
    unsigned int sub_mb_type;
967
    int i8, i4;
968

    
969
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
970
    if(IS_8X8(mb_type_col) && !h->sps.direct_8x8_inference_flag){
971
        /* FIXME save sub mb types from previous frames (or derive from MVs)
972
         * so we know exactly what block size to use */
973
        sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
974
        *mb_type =    MB_TYPE_8x8|MB_TYPE_L0L1;
975
    }else if(!is_b8x8 && (mb_type_col & MB_TYPE_16x16_OR_INTRA)){
976
        sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
977
        *mb_type =    MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
978
    }else{
979
        sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
980
        *mb_type =    MB_TYPE_8x8|MB_TYPE_L0L1;
981
    }
982
    if(!is_b8x8)
983
        *mb_type |= MB_TYPE_DIRECT2;
984
    if(MB_FIELD)
985
        *mb_type |= MB_TYPE_INTERLACED;
986

    
987
    tprintf(s->avctx, "mb_type = %08x, sub_mb_type = %08x, is_b8x8 = %d, mb_type_col = %08x\n", *mb_type, sub_mb_type, is_b8x8, mb_type_col);
988

    
989
    if(h->direct_spatial_mv_pred){
990
        int ref[2];
991
        int mv[2][2];
992
        int list;
993

    
994
        /* FIXME interlacing + spatial direct uses wrong colocated block positions */
995

    
996
        /* ref = min(neighbors) */
997
        for(list=0; list<2; list++){
998
            int refa = h->ref_cache[list][scan8[0] - 1];
999
            int refb = h->ref_cache[list][scan8[0] - 8];
1000
            int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1001
            if(refc == -2)
1002
                refc = h->ref_cache[list][scan8[0] - 8 - 1];
1003
            ref[list] = refa;
1004
            if(ref[list] < 0 || (refb < ref[list] && refb >= 0))
1005
                ref[list] = refb;
1006
            if(ref[list] < 0 || (refc < ref[list] && refc >= 0))
1007
                ref[list] = refc;
1008
            if(ref[list] < 0)
1009
                ref[list] = -1;
1010
        }
1011

    
1012
        if(ref[0] < 0 && ref[1] < 0){
1013
            ref[0] = ref[1] = 0;
1014
            mv[0][0] = mv[0][1] =
1015
            mv[1][0] = mv[1][1] = 0;
1016
        }else{
1017
            for(list=0; list<2; list++){
1018
                if(ref[list] >= 0)
1019
                    pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1020
                else
1021
                    mv[list][0] = mv[list][1] = 0;
1022
            }
1023
        }
1024

    
1025
        if(ref[1] < 0){
1026
            if(!is_b8x8)
1027
                *mb_type &= ~MB_TYPE_L1;
1028
            sub_mb_type &= ~MB_TYPE_L1;
1029
        }else if(ref[0] < 0){
1030
            if(!is_b8x8)
1031
                *mb_type &= ~MB_TYPE_L0;
1032
            sub_mb_type &= ~MB_TYPE_L0;
1033
        }
1034

    
1035
        if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col)){
1036
            int pair_xy = s->mb_x + (s->mb_y&~1)*s->mb_stride;
1037
            int mb_types_col[2];
1038
            int b8_stride = h->b8_stride;
1039
            int b4_stride = h->b_stride;
1040

    
1041
            *mb_type = (*mb_type & ~MB_TYPE_16x16) | MB_TYPE_8x8;
1042

    
1043
            if(IS_INTERLACED(*mb_type)){
1044
                mb_types_col[0] = h->ref_list[1][0].mb_type[pair_xy];
1045
                mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy+s->mb_stride];
1046
                if(s->mb_y&1){
1047
                    l1ref0 -= 2*b8_stride;
1048
                    l1ref1 -= 2*b8_stride;
1049
                    l1mv0 -= 4*b4_stride;
1050
                    l1mv1 -= 4*b4_stride;
1051
                }
1052
                b8_stride *= 3;
1053
                b4_stride *= 6;
1054
            }else{
1055
                int cur_poc = s->current_picture_ptr->poc;
1056
                int *col_poc = h->ref_list[1]->field_poc;
1057
                int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
1058
                int dy = 2*col_parity - (s->mb_y&1);
1059
                mb_types_col[0] =
1060
                mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy + col_parity*s->mb_stride];
1061
                l1ref0 += dy*b8_stride;
1062
                l1ref1 += dy*b8_stride;
1063
                l1mv0 += 2*dy*b4_stride;
1064
                l1mv1 += 2*dy*b4_stride;
1065
                b8_stride = 0;
1066
            }
1067

    
1068
            for(i8=0; i8<4; i8++){
1069
                int x8 = i8&1;
1070
                int y8 = i8>>1;
1071
                int xy8 = x8+y8*b8_stride;
1072
                int xy4 = 3*x8+y8*b4_stride;
1073
                int a=0, b=0;
1074

    
1075
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1076
                    continue;
1077
                h->sub_mb_type[i8] = sub_mb_type;
1078

    
1079
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1080
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1081
                if(!IS_INTRA(mb_types_col[y8])
1082
                   && (   (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
1083
                       || (l1ref0[xy8]  < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
1084
                    if(ref[0] > 0)
1085
                        a= pack16to32(mv[0][0],mv[0][1]);
1086
                    if(ref[1] > 0)
1087
                        b= pack16to32(mv[1][0],mv[1][1]);
1088
                }else{
1089
                    a= pack16to32(mv[0][0],mv[0][1]);
1090
                    b= pack16to32(mv[1][0],mv[1][1]);
1091
                }
1092
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
1093
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
1094
            }
1095
        }else if(IS_16X16(*mb_type)){
1096
            int a=0, b=0;
1097

    
1098
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1099
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1100
            if(!IS_INTRA(mb_type_col)
1101
               && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1102
                   || (l1ref0[0]  < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1103
                       && (h->x264_build>33 || !h->x264_build)))){
1104
                if(ref[0] > 0)
1105
                    a= pack16to32(mv[0][0],mv[0][1]);
1106
                if(ref[1] > 0)
1107
                    b= pack16to32(mv[1][0],mv[1][1]);
1108
            }else{
1109
                a= pack16to32(mv[0][0],mv[0][1]);
1110
                b= pack16to32(mv[1][0],mv[1][1]);
1111
            }
1112
            fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1113
            fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1114
        }else{
1115
            for(i8=0; i8<4; i8++){
1116
                const int x8 = i8&1;
1117
                const int y8 = i8>>1;
1118

    
1119
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1120
                    continue;
1121
                h->sub_mb_type[i8] = sub_mb_type;
1122

    
1123
                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1124
                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1125
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1126
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1127

    
1128
                /* col_zero_flag */
1129
                if(!IS_INTRA(mb_type_col) && (   l1ref0[x8 + y8*h->b8_stride] == 0
1130
                                              || (l1ref0[x8 + y8*h->b8_stride] < 0 && l1ref1[x8 + y8*h->b8_stride] == 0
1131
                                                  && (h->x264_build>33 || !h->x264_build)))){
1132
                    const int16_t (*l1mv)[2]= l1ref0[x8 + y8*h->b8_stride] == 0 ? l1mv0 : l1mv1;
1133
                    if(IS_SUB_8X8(sub_mb_type)){
1134
                        const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1135
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1136
                            if(ref[0] == 0)
1137
                                fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1138
                            if(ref[1] == 0)
1139
                                fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1140
                        }
1141
                    }else
1142
                    for(i4=0; i4<4; i4++){
1143
                        const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1144
                        if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1145
                            if(ref[0] == 0)
1146
                                *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1147
                            if(ref[1] == 0)
1148
                                *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1149
                        }
1150
                    }
1151
                }
1152
            }
1153
        }
1154
    }else{ /* direct temporal mv pred */
1155
        const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1156
        const int *dist_scale_factor = h->dist_scale_factor;
1157

    
1158
        if(FRAME_MBAFF){
1159
            if(IS_INTERLACED(*mb_type)){
1160
                map_col_to_list0[0] = h->map_col_to_list0_field[0];
1161
                map_col_to_list0[1] = h->map_col_to_list0_field[1];
1162
                dist_scale_factor = h->dist_scale_factor_field;
1163
            }
1164
            if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col)){
1165
                /* FIXME assumes direct_8x8_inference == 1 */
1166
                const int pair_xy = s->mb_x + (s->mb_y&~1)*s->mb_stride;
1167
                int mb_types_col[2];
1168
                int y_shift;
1169

    
1170
                *mb_type = MB_TYPE_8x8|MB_TYPE_L0L1
1171
                         | (is_b8x8 ? 0 : MB_TYPE_DIRECT2)
1172
                         | (*mb_type & MB_TYPE_INTERLACED);
1173
                sub_mb_type = MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_16x16;
1174

    
1175
                if(IS_INTERLACED(*mb_type)){
1176
                    /* frame to field scaling */
1177
                    mb_types_col[0] = h->ref_list[1][0].mb_type[pair_xy];
1178
                    mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy+s->mb_stride];
1179
                    if(s->mb_y&1){
1180
                        l1ref0 -= 2*h->b8_stride;
1181
                        l1ref1 -= 2*h->b8_stride;
1182
                        l1mv0 -= 4*h->b_stride;
1183
                        l1mv1 -= 4*h->b_stride;
1184
                    }
1185
                    y_shift = 0;
1186

    
1187
                    if(   (mb_types_col[0] & MB_TYPE_16x16_OR_INTRA)
1188
                       && (mb_types_col[1] & MB_TYPE_16x16_OR_INTRA)
1189
                       && !is_b8x8)
1190
                        *mb_type |= MB_TYPE_16x8;
1191
                    else
1192
                        *mb_type |= MB_TYPE_8x8;
1193
                }else{
1194
                    /* field to frame scaling */
1195
                    /* col_mb_y = (mb_y&~1) + (topAbsDiffPOC < bottomAbsDiffPOC ? 0 : 1)
1196
                     * but in MBAFF, top and bottom POC are equal */
1197
                    int dy = (s->mb_y&1) ? 1 : 2;
1198
                    mb_types_col[0] =
1199
                    mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy+s->mb_stride];
1200
                    l1ref0 += dy*h->b8_stride;
1201
                    l1ref1 += dy*h->b8_stride;
1202
                    l1mv0 += 2*dy*h->b_stride;
1203
                    l1mv1 += 2*dy*h->b_stride;
1204
                    y_shift = 2;
1205

    
1206
                    if((mb_types_col[0] & (MB_TYPE_16x16_OR_INTRA|MB_TYPE_16x8))
1207
                       && !is_b8x8)
1208
                        *mb_type |= MB_TYPE_16x16;
1209
                    else
1210
                        *mb_type |= MB_TYPE_8x8;
1211
                }
1212

    
1213
                for(i8=0; i8<4; i8++){
1214
                    const int x8 = i8&1;
1215
                    const int y8 = i8>>1;
1216
                    int ref0, scale;
1217
                    const int16_t (*l1mv)[2]= l1mv0;
1218

    
1219
                    if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1220
                        continue;
1221
                    h->sub_mb_type[i8] = sub_mb_type;
1222

    
1223
                    fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1224
                    if(IS_INTRA(mb_types_col[y8])){
1225
                        fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1226
                        fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1227
                        fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1228
                        continue;
1229
                    }
1230

    
1231
                    ref0 = l1ref0[x8 + (y8*2>>y_shift)*h->b8_stride];
1232
                    if(ref0 >= 0)
1233
                        ref0 = map_col_to_list0[0][ref0*2>>y_shift];
1234
                    else{
1235
                        ref0 = map_col_to_list0[1][l1ref1[x8 + (y8*2>>y_shift)*h->b8_stride]*2>>y_shift];
1236
                        l1mv= l1mv1;
1237
                    }
1238
                    scale = dist_scale_factor[ref0];
1239
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1240

    
1241
                    {
1242
                        const int16_t *mv_col = l1mv[x8*3 + (y8*6>>y_shift)*h->b_stride];
1243
                        int my_col = (mv_col[1]<<y_shift)/2;
1244
                        int mx = (scale * mv_col[0] + 128) >> 8;
1245
                        int my = (scale * my_col + 128) >> 8;
1246
                        fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1247
                        fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1248
                    }
1249
                }
1250
                return;
1251
            }
1252
        }
1253

    
1254
        /* one-to-one mv scaling */
1255

    
1256
        if(IS_16X16(*mb_type)){
1257
            int ref, mv0, mv1;
1258

    
1259
            fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1260
            if(IS_INTRA(mb_type_col)){
1261
                ref=mv0=mv1=0;
1262
            }else{
1263
                const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0]]
1264
                                                : map_col_to_list0[1][l1ref1[0]];
1265
                const int scale = dist_scale_factor[ref0];
1266
                const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1267
                int mv_l0[2];
1268
                mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1269
                mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1270
                ref= ref0;
1271
                mv0= pack16to32(mv_l0[0],mv_l0[1]);
1272
                mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1273
            }
1274
            fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1275
            fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1276
            fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1277
        }else{
1278
            for(i8=0; i8<4; i8++){
1279
                const int x8 = i8&1;
1280
                const int y8 = i8>>1;
1281
                int ref0, scale;
1282
                const int16_t (*l1mv)[2]= l1mv0;
1283

    
1284
                if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1285
                    continue;
1286
                h->sub_mb_type[i8] = sub_mb_type;
1287
                fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1288
                if(IS_INTRA(mb_type_col)){
1289
                    fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1290
                    fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1291
                    fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1292
                    continue;
1293
                }
1294

    
1295
                ref0 = l1ref0[x8 + y8*h->b8_stride];
1296
                if(ref0 >= 0)
1297
                    ref0 = map_col_to_list0[0][ref0];
1298
                else{
1299
                    ref0 = map_col_to_list0[1][l1ref1[x8 + y8*h->b8_stride]];
1300
                    l1mv= l1mv1;
1301
                }
1302
                scale = dist_scale_factor[ref0];
1303

    
1304
                fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1305
                if(IS_SUB_8X8(sub_mb_type)){
1306
                    const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1307
                    int mx = (scale * mv_col[0] + 128) >> 8;
1308
                    int my = (scale * mv_col[1] + 128) >> 8;
1309
                    fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1310
                    fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1311
                }else
1312
                for(i4=0; i4<4; i4++){
1313
                    const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1314
                    int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1315
                    mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1316
                    mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1317
                    *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1318
                        pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1319
                }
1320
            }
1321
        }
1322
    }
1323
}
1324

    
1325
static inline void write_back_motion(H264Context *h, int mb_type){
1326
    MpegEncContext * const s = &h->s;
1327
    const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1328
    const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1329
    int list;
1330

    
1331
    if(!USES_LIST(mb_type, 0))
1332
        fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1333

    
1334
    for(list=0; list<h->list_count; list++){
1335
        int y;
1336
        if(!USES_LIST(mb_type, list))
1337
            continue;
1338

    
1339
        for(y=0; y<4; y++){
1340
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
1341
            *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
1342
        }
1343
        if( h->pps.cabac ) {
1344
            if(IS_SKIP(mb_type))
1345
                fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1346
            else
1347
            for(y=0; y<4; y++){
1348
                *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1349
                *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1350
            }
1351
        }
1352

    
1353
        {
1354
            int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1355
            ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1356
            ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1357
            ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1358
            ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1359
        }
1360
    }
1361

    
1362
    if(h->slice_type == FF_B_TYPE && h->pps.cabac){
1363
        if(IS_8X8(mb_type)){
1364
            uint8_t *direct_table = &h->direct_table[b8_xy];
1365
            direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1366
            direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1367
            direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1368
        }
1369
    }
1370
}
1371

    
1372
/**
1373
 * Decodes a network abstraction layer unit.
1374
 * @param consumed is the number of bytes used as input
1375
 * @param length is the length of the array
1376
 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
1377
 * @returns decoded bytes, might be src+1 if no escapes
1378
 */
1379
static const uint8_t *decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
1380
    int i, si, di;
1381
    uint8_t *dst;
1382
    int bufidx;
1383

    
1384
//    src[0]&0x80;                //forbidden bit
1385
    h->nal_ref_idc= src[0]>>5;
1386
    h->nal_unit_type= src[0]&0x1F;
1387

    
1388
    src++; length--;
1389
#if 0
1390
    for(i=0; i<length; i++)
1391
        printf("%2X ", src[i]);
1392
#endif
1393
    for(i=0; i+1<length; i+=2){
1394
        if(src[i]) continue;
1395
        if(i>0 && src[i-1]==0) i--;
1396
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1397
            if(src[i+2]!=3){
1398
                /* startcode, so we must be past the end */
1399
                length=i;
1400
            }
1401
            break;
1402
        }
1403
    }
1404

    
1405
    if(i>=length-1){ //no escaped 0
1406
        *dst_length= length;
1407
        *consumed= length+1; //+1 for the header
1408
        return src;
1409
    }
1410

    
1411
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1412
    h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length);
1413
    dst= h->rbsp_buffer[bufidx];
1414

    
1415
    if (dst == NULL){
1416
        return NULL;
1417
    }
1418

    
1419
//printf("decoding esc\n");
1420
    si=di=0;
1421
    while(si<length){
1422
        //remove escapes (very rare 1:2^22)
1423
        if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1424
            if(src[si+2]==3){ //escape
1425
                dst[di++]= 0;
1426
                dst[di++]= 0;
1427
                si+=3;
1428
                continue;
1429
            }else //next start code
1430
                break;
1431
        }
1432

    
1433
        dst[di++]= src[si++];
1434
    }
1435

    
1436
    *dst_length= di;
1437
    *consumed= si + 1;//+1 for the header
1438
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1439
    return dst;
1440
}
1441

    
1442
/**
1443
 * identifies the exact end of the bitstream
1444
 * @return the length of the trailing, or 0 if damaged
1445
 */
1446
static int decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1447
    int v= *src;
1448
    int r;
1449

    
1450
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1451

    
1452
    for(r=1; r<9; r++){
1453
        if(v&1) return r;
1454
        v>>=1;
1455
    }
1456
    return 0;
1457
}
1458

    
1459
/**
1460
 * idct tranforms the 16 dc values and dequantize them.
1461
 * @param qp quantization parameter
1462
 */
1463
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1464
#define stride 16
1465
    int i;
1466
    int temp[16]; //FIXME check if this is a good idea
1467
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1468
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1469

    
1470
//memset(block, 64, 2*256);
1471
//return;
1472
    for(i=0; i<4; i++){
1473
        const int offset= y_offset[i];
1474
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1475
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1476
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1477
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1478

    
1479
        temp[4*i+0]= z0+z3;
1480
        temp[4*i+1]= z1+z2;
1481
        temp[4*i+2]= z1-z2;
1482
        temp[4*i+3]= z0-z3;
1483
    }
1484

    
1485
    for(i=0; i<4; i++){
1486
        const int offset= x_offset[i];
1487
        const int z0= temp[4*0+i] + temp[4*2+i];
1488
        const int z1= temp[4*0+i] - temp[4*2+i];
1489
        const int z2= temp[4*1+i] - temp[4*3+i];
1490
        const int z3= temp[4*1+i] + temp[4*3+i];
1491

    
1492
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_resdual
1493
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1494
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1495
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1496
    }
1497
}
1498

    
1499
#if 0
1500
/**
1501
 * dct tranforms the 16 dc values.
1502
 * @param qp quantization parameter ??? FIXME
1503
 */
1504
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1505
//    const int qmul= dequant_coeff[qp][0];
1506
    int i;
1507
    int temp[16]; //FIXME check if this is a good idea
1508
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
1509
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1510

1511
    for(i=0; i<4; i++){
1512
        const int offset= y_offset[i];
1513
        const int z0= block[offset+stride*0] + block[offset+stride*4];
1514
        const int z1= block[offset+stride*0] - block[offset+stride*4];
1515
        const int z2= block[offset+stride*1] - block[offset+stride*5];
1516
        const int z3= block[offset+stride*1] + block[offset+stride*5];
1517

1518
        temp[4*i+0]= z0+z3;
1519
        temp[4*i+1]= z1+z2;
1520
        temp[4*i+2]= z1-z2;
1521
        temp[4*i+3]= z0-z3;
1522
    }
1523

1524
    for(i=0; i<4; i++){
1525
        const int offset= x_offset[i];
1526
        const int z0= temp[4*0+i] + temp[4*2+i];
1527
        const int z1= temp[4*0+i] - temp[4*2+i];
1528
        const int z2= temp[4*1+i] - temp[4*3+i];
1529
        const int z3= temp[4*1+i] + temp[4*3+i];
1530

1531
        block[stride*0 +offset]= (z0 + z3)>>1;
1532
        block[stride*2 +offset]= (z1 + z2)>>1;
1533
        block[stride*8 +offset]= (z1 - z2)>>1;
1534
        block[stride*10+offset]= (z0 - z3)>>1;
1535
    }
1536
}
1537
#endif
1538

    
1539
#undef xStride
1540
#undef stride
1541

    
1542
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1543
    const int stride= 16*2;
1544
    const int xStride= 16;
1545
    int a,b,c,d,e;
1546

    
1547
    a= block[stride*0 + xStride*0];
1548
    b= block[stride*0 + xStride*1];
1549
    c= block[stride*1 + xStride*0];
1550
    d= block[stride*1 + xStride*1];
1551

    
1552
    e= a-b;
1553
    a= a+b;
1554
    b= c-d;
1555
    c= c+d;
1556

    
1557
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1558
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1559
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1560
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1561
}
1562

    
1563
#if 0
1564
static void chroma_dc_dct_c(DCTELEM *block){
1565
    const int stride= 16*2;
1566
    const int xStride= 16;
1567
    int a,b,c,d,e;
1568

1569
    a= block[stride*0 + xStride*0];
1570
    b= block[stride*0 + xStride*1];
1571
    c= block[stride*1 + xStride*0];
1572
    d= block[stride*1 + xStride*1];
1573

1574
    e= a-b;
1575
    a= a+b;
1576
    b= c-d;
1577
    c= c+d;
1578

1579
    block[stride*0 + xStride*0]= (a+c);
1580
    block[stride*0 + xStride*1]= (e+b);
1581
    block[stride*1 + xStride*0]= (a-c);
1582
    block[stride*1 + xStride*1]= (e-b);
1583
}
1584
#endif
1585

    
1586
/**
1587
 * gets the chroma qp.
1588
 */
1589
static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1590
    return h->pps.chroma_qp_table[t][qscale & 0xff];
1591
}
1592

    
1593
//FIXME need to check that this does not overflow signed 32 bit for low qp, I am not sure, it's very close
1594
//FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
1595
static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int separate_dc){
1596
    int i;
1597
    const int * const quant_table= quant_coeff[qscale];
1598
    const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1599
    const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1600
    const unsigned int threshold2= (threshold1<<1);
1601
    int last_non_zero;
1602

    
1603
    if(separate_dc){
1604
        if(qscale<=18){
1605
            //avoid overflows
1606
            const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1607
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1608
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1609

    
1610
            int level= block[0]*quant_coeff[qscale+18][0];
1611
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1612
                if(level>0){
1613
                    level= (dc_bias + level)>>(QUANT_SHIFT-2);
1614
                    block[0]= level;
1615
                }else{
1616
                    level= (dc_bias - level)>>(QUANT_SHIFT-2);
1617
                    block[0]= -level;
1618
                }
1619
//                last_non_zero = i;
1620
            }else{
1621
                block[0]=0;
1622
            }
1623
        }else{
1624
            const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1625
            const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1626
            const unsigned int dc_threshold2= (dc_threshold1<<1);
1627

    
1628
            int level= block[0]*quant_table[0];
1629
            if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1630
                if(level>0){
1631
                    level= (dc_bias + level)>>(QUANT_SHIFT+1);
1632
                    block[0]= level;
1633
                }else{
1634
                    level= (dc_bias - level)>>(QUANT_SHIFT+1);
1635
                    block[0]= -level;
1636
                }
1637
//                last_non_zero = i;
1638
            }else{
1639
                block[0]=0;
1640
            }
1641
        }
1642
        last_non_zero= 0;
1643
        i=1;
1644
    }else{
1645
        last_non_zero= -1;
1646
        i=0;
1647
    }
1648

    
1649
    for(; i<16; i++){
1650
        const int j= scantable[i];
1651
        int level= block[j]*quant_table[j];
1652

    
1653
//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
1654
//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
1655
        if(((unsigned)(level+threshold1))>threshold2){
1656
            if(level>0){
1657
                level= (bias + level)>>QUANT_SHIFT;
1658
                block[j]= level;
1659
            }else{
1660
                level= (bias - level)>>QUANT_SHIFT;
1661
                block[j]= -level;
1662
            }
1663
            last_non_zero = i;
1664
        }else{
1665
            block[j]=0;
1666
        }
1667
    }
1668

    
1669
    return last_non_zero;
1670
}
1671

    
1672
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1673
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1674
                           int src_x_offset, int src_y_offset,
1675
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1676
    MpegEncContext * const s = &h->s;
1677
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1678
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1679
    const int luma_xy= (mx&3) + ((my&3)<<2);
1680
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1681
    uint8_t * src_cb, * src_cr;
1682
    int extra_width= h->emu_edge_width;
1683
    int extra_height= h->emu_edge_height;
1684
    int emu=0;
1685
    const int full_mx= mx>>2;
1686
    const int full_my= my>>2;
1687
    const int pic_width  = 16*s->mb_width;
1688
    const int pic_height = 16*s->mb_height >> MB_FIELD;
1689

    
1690
    if(!pic->data[0]) //FIXME this is unacceptable, some senseable error concealment must be done for missing reference frames
1691
        return;
1692

    
1693
    if(mx&7) extra_width -= 3;
1694
    if(my&7) extra_height -= 3;
1695

    
1696
    if(   full_mx < 0-extra_width
1697
       || full_my < 0-extra_height
1698
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
1699
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
1700
        ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
1701
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1702
        emu=1;
1703
    }
1704

    
1705
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1706
    if(!square){
1707
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1708
    }
1709

    
1710
    if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1711

    
1712
    if(MB_FIELD){
1713
        // chroma offset when predicting from a field of opposite parity
1714
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1715
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1716
    }
1717
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1718
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1719

    
1720
    if(emu){
1721
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1722
            src_cb= s->edge_emu_buffer;
1723
    }
1724
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1725

    
1726
    if(emu){
1727
        ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1728
            src_cr= s->edge_emu_buffer;
1729
    }
1730
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1731
}
1732

    
1733
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1734
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1735
                           int x_offset, int y_offset,
1736
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1737
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1738
                           int list0, int list1){
1739
    MpegEncContext * const s = &h->s;
1740
    qpel_mc_func *qpix_op=  qpix_put;
1741
    h264_chroma_mc_func chroma_op= chroma_put;
1742

    
1743
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1744
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1745
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1746
    x_offset += 8*s->mb_x;
1747
    y_offset += 8*(s->mb_y >> MB_FIELD);
1748

    
1749
    if(list0){
1750
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1751
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1752
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1753
                           qpix_op, chroma_op);
1754

    
1755
        qpix_op=  qpix_avg;
1756
        chroma_op= chroma_avg;
1757
    }
1758

    
1759
    if(list1){
1760
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1761
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1762
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
1763
                           qpix_op, chroma_op);
1764
    }
1765
}
1766

    
1767
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1768
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1769
                           int x_offset, int y_offset,
1770
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1771
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1772
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1773
                           int list0, int list1){
1774
    MpegEncContext * const s = &h->s;
1775

    
1776
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
1777
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
1778
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
1779
    x_offset += 8*s->mb_x;
1780
    y_offset += 8*(s->mb_y >> MB_FIELD);
1781

    
1782
    if(list0 && list1){
1783
        /* don't optimize for luma-only case, since B-frames usually
1784
         * use implicit weights => chroma too. */
1785
        uint8_t *tmp_cb = s->obmc_scratchpad;
1786
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1787
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1788
        int refn0 = h->ref_cache[0][ scan8[n] ];
1789
        int refn1 = h->ref_cache[1][ scan8[n] ];
1790

    
1791
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1792
                    dest_y, dest_cb, dest_cr,
1793
                    x_offset, y_offset, qpix_put, chroma_put);
1794
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1795
                    tmp_y, tmp_cb, tmp_cr,
1796
                    x_offset, y_offset, qpix_put, chroma_put);
1797

    
1798
        if(h->use_weight == 2){
1799
            int weight0 = h->implicit_weight[refn0][refn1];
1800
            int weight1 = 64 - weight0;
1801
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
1802
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1803
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1804
        }else{
1805
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1806
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1807
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1808
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1809
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1810
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1811
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1812
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1813
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1814
        }
1815
    }else{
1816
        int list = list1 ? 1 : 0;
1817
        int refn = h->ref_cache[list][ scan8[n] ];
1818
        Picture *ref= &h->ref_list[list][refn];
1819
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1820
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
1821
                    qpix_put, chroma_put);
1822

    
1823
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1824
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
1825
        if(h->use_weight_chroma){
1826
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1827
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1828
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1829
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1830
        }
1831
    }
1832
}
1833

    
1834
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1835
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1836
                           int x_offset, int y_offset,
1837
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1838
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1839
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1840
                           int list0, int list1){
1841
    if((h->use_weight==2 && list0 && list1
1842
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1843
       || h->use_weight==1)
1844
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1845
                         x_offset, y_offset, qpix_put, chroma_put,
1846
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1847
    else
1848
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1849
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1850
}
1851

    
1852
static inline void prefetch_motion(H264Context *h, int list){
1853
    /* fetch pixels for estimated mv 4 macroblocks ahead
1854
     * optimized for 64byte cache lines */
1855
    MpegEncContext * const s = &h->s;
1856
    const int refn = h->ref_cache[list][scan8[0]];
1857
    if(refn >= 0){
1858
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1859
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1860
        uint8_t **src= h->ref_list[list][refn].data;
1861
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1862
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
1863
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1864
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1865
    }
1866
}
1867

    
1868
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1869
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1870
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1871
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1872
    MpegEncContext * const s = &h->s;
1873
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
1874
    const int mb_type= s->current_picture.mb_type[mb_xy];
1875

    
1876
    assert(IS_INTER(mb_type));
1877

    
1878
    prefetch_motion(h, 0);
1879

    
1880
    if(IS_16X16(mb_type)){
1881
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1882
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1883
                &weight_op[0], &weight_avg[0],
1884
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1885
    }else if(IS_16X8(mb_type)){
1886
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1887
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1888
                &weight_op[1], &weight_avg[1],
1889
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1890
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1891
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1892
                &weight_op[1], &weight_avg[1],
1893
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1894
    }else if(IS_8X16(mb_type)){
1895
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1896
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1897
                &weight_op[2], &weight_avg[2],
1898
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1899
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1900
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1901
                &weight_op[2], &weight_avg[2],
1902
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1903
    }else{
1904
        int i;
1905

    
1906
        assert(IS_8X8(mb_type));
1907

    
1908
        for(i=0; i<4; i++){
1909
            const int sub_mb_type= h->sub_mb_type[i];
1910
            const int n= 4*i;
1911
            int x_offset= (i&1)<<2;
1912
            int y_offset= (i&2)<<1;
1913

    
1914
            if(IS_SUB_8X8(sub_mb_type)){
1915
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1916
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1917
                    &weight_op[3], &weight_avg[3],
1918
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1919
            }else if(IS_SUB_8X4(sub_mb_type)){
1920
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1921
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1922
                    &weight_op[4], &weight_avg[4],
1923
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1924
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1925
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1926
                    &weight_op[4], &weight_avg[4],
1927
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1928
            }else if(IS_SUB_4X8(sub_mb_type)){
1929
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1930
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1931
                    &weight_op[5], &weight_avg[5],
1932
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1933
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1934
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1935
                    &weight_op[5], &weight_avg[5],
1936
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1937
            }else{
1938
                int j;
1939
                assert(IS_SUB_4X4(sub_mb_type));
1940
                for(j=0; j<4; j++){
1941
                    int sub_x_offset= x_offset + 2*(j&1);
1942
                    int sub_y_offset= y_offset +   (j&2);
1943
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1944
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1945
                        &weight_op[6], &weight_avg[6],
1946
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1947
                }
1948
            }
1949
        }
1950
    }
1951

    
1952
    prefetch_motion(h, 1);
1953
}
1954

    
1955
static void decode_init_vlc(void){
1956
    static int done = 0;
1957

    
1958
    if (!done) {
1959
        int i;
1960
        done = 1;
1961

    
1962
        init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1963
                 &chroma_dc_coeff_token_len [0], 1, 1,
1964
                 &chroma_dc_coeff_token_bits[0], 1, 1, 1);
1965

    
1966
        for(i=0; i<4; i++){
1967
            init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1968
                     &coeff_token_len [i][0], 1, 1,
1969
                     &coeff_token_bits[i][0], 1, 1, 1);
1970
        }
1971

    
1972
        for(i=0; i<3; i++){
1973
            init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1974
                     &chroma_dc_total_zeros_len [i][0], 1, 1,
1975
                     &chroma_dc_total_zeros_bits[i][0], 1, 1, 1);
1976
        }
1977
        for(i=0; i<15; i++){
1978
            init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
1979
                     &total_zeros_len [i][0], 1, 1,
1980
                     &total_zeros_bits[i][0], 1, 1, 1);
1981
        }
1982

    
1983
        for(i=0; i<6; i++){
1984
            init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
1985
                     &run_len [i][0], 1, 1,
1986
                     &run_bits[i][0], 1, 1, 1);
1987
        }
1988
        init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
1989
                 &run_len [6][0], 1, 1,
1990
                 &run_bits[6][0], 1, 1, 1);
1991
    }
1992
}
1993

    
1994
static void free_tables(H264Context *h){
1995
    int i;
1996
    H264Context *hx;
1997
    av_freep(&h->intra4x4_pred_mode);
1998
    av_freep(&h->chroma_pred_mode_table);
1999
    av_freep(&h->cbp_table);
2000
    av_freep(&h->mvd_table[0]);
2001
    av_freep(&h->mvd_table[1]);
2002
    av_freep(&h->direct_table);
2003
    av_freep(&h->non_zero_count);
2004
    av_freep(&h->slice_table_base);
2005
    h->slice_table= NULL;
2006

    
2007
    av_freep(&h->mb2b_xy);
2008
    av_freep(&h->mb2b8_xy);
2009

    
2010
    for(i = 0; i < MAX_SPS_COUNT; i++)
2011
        av_freep(h->sps_buffers + i);
2012

    
2013
    for(i = 0; i < MAX_PPS_COUNT; i++)
2014
        av_freep(h->pps_buffers + i);
2015

    
2016
    for(i = 0; i < h->s.avctx->thread_count; i++) {
2017
        hx = h->thread_context[i];
2018
        if(!hx) continue;
2019
        av_freep(&hx->top_borders[1]);
2020
        av_freep(&hx->top_borders[0]);
2021
        av_freep(&hx->s.obmc_scratchpad);
2022
    }
2023
}
2024

    
2025
static void init_dequant8_coeff_table(H264Context *h){
2026
    int i,q,x;
2027
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2028
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
2029
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
2030

    
2031
    for(i=0; i<2; i++ ){
2032
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2033
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
2034
            break;
2035
        }
2036

    
2037
        for(q=0; q<52; q++){
2038
            int shift = ff_div6[q];
2039
            int idx = ff_rem6[q];
2040
            for(x=0; x<64; x++)
2041
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2042
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2043
                    h->pps.scaling_matrix8[i][x]) << shift;
2044
        }
2045
    }
2046
}
2047

    
2048
static void init_dequant4_coeff_table(H264Context *h){
2049
    int i,j,q,x;
2050
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2051
    for(i=0; i<6; i++ ){
2052
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
2053
        for(j=0; j<i; j++){
2054
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2055
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
2056
                break;
2057
            }
2058
        }
2059
        if(j<i)
2060
            continue;
2061

    
2062
        for(q=0; q<52; q++){
2063
            int shift = ff_div6[q] + 2;
2064
            int idx = ff_rem6[q];
2065
            for(x=0; x<16; x++)
2066
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2067
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2068
                    h->pps.scaling_matrix4[i][x]) << shift;
2069
        }
2070
    }
2071
}
2072

    
2073
static void init_dequant_tables(H264Context *h){
2074
    int i,x;
2075
    init_dequant4_coeff_table(h);
2076
    if(h->pps.transform_8x8_mode)
2077
        init_dequant8_coeff_table(h);
2078
    if(h->sps.transform_bypass){
2079
        for(i=0; i<6; i++)
2080
            for(x=0; x<16; x++)
2081
                h->dequant4_coeff[i][0][x] = 1<<6;
2082
        if(h->pps.transform_8x8_mode)
2083
            for(i=0; i<2; i++)
2084
                for(x=0; x<64; x++)
2085
                    h->dequant8_coeff[i][0][x] = 1<<6;
2086
    }
2087
}
2088

    
2089

    
2090
/**
2091
 * allocates tables.
2092
 * needs width/height
2093
 */
2094
static int alloc_tables(H264Context *h){
2095
    MpegEncContext * const s = &h->s;
2096
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
2097
    int x,y;
2098

    
2099
    CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t))
2100

    
2101
    CHECKED_ALLOCZ(h->non_zero_count    , big_mb_num * 16 * sizeof(uint8_t))
2102
    CHECKED_ALLOCZ(h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(uint8_t))
2103
    CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2104

    
2105
    CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2106
    CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2107
    CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2108
    CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2109

    
2110
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(uint8_t));
2111
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2112

    
2113
    CHECKED_ALLOCZ(h->mb2b_xy  , big_mb_num * sizeof(uint32_t));
2114
    CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2115
    for(y=0; y<s->mb_height; y++){
2116
        for(x=0; x<s->mb_width; x++){
2117
            const int mb_xy= x + y*s->mb_stride;
2118
            const int b_xy = 4*x + 4*y*h->b_stride;
2119
            const int b8_xy= 2*x + 2*y*h->b8_stride;
2120

    
2121
            h->mb2b_xy [mb_xy]= b_xy;
2122
            h->mb2b8_xy[mb_xy]= b8_xy;
2123
        }
2124
    }
2125

    
2126
    s->obmc_scratchpad = NULL;
2127

    
2128
    if(!h->dequant4_coeff[0])
2129
        init_dequant_tables(h);
2130

    
2131
    return 0;
2132
fail:
2133
    free_tables(h);
2134
    return -1;
2135
}
2136

    
2137
/**
2138
 * Mimic alloc_tables(), but for every context thread.
2139
 */
2140
static void clone_tables(H264Context *dst, H264Context *src){
2141
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
2142
    dst->non_zero_count           = src->non_zero_count;
2143
    dst->slice_table              = src->slice_table;
2144
    dst->cbp_table                = src->cbp_table;
2145
    dst->mb2b_xy                  = src->mb2b_xy;
2146
    dst->mb2b8_xy                 = src->mb2b8_xy;
2147
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
2148
    dst->mvd_table[0]             = src->mvd_table[0];
2149
    dst->mvd_table[1]             = src->mvd_table[1];
2150
    dst->direct_table             = src->direct_table;
2151

    
2152
    dst->s.obmc_scratchpad = NULL;
2153
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2154
}
2155

    
2156
/**
2157
 * Init context
2158
 * Allocate buffers which are not shared amongst multiple threads.
2159
 */
2160
static int context_init(H264Context *h){
2161
    CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2162
    CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2163

    
2164
    return 0;
2165
fail:
2166
    return -1; // free_tables will clean up for us
2167
}
2168

    
2169
static void common_init(H264Context *h){
2170
    MpegEncContext * const s = &h->s;
2171

    
2172
    s->width = s->avctx->width;
2173
    s->height = s->avctx->height;
2174
    s->codec_id= s->avctx->codec->id;
2175

    
2176
    ff_h264_pred_init(&h->hpc, s->codec_id);
2177

    
2178
    h->dequant_coeff_pps= -1;
2179
    s->unrestricted_mv=1;
2180
    s->decode=1; //FIXME
2181

    
2182
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2183
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2184
}
2185

    
2186
static int decode_init(AVCodecContext *avctx){
2187
    H264Context *h= avctx->priv_data;
2188
    MpegEncContext * const s = &h->s;
2189

    
2190
    MPV_decode_defaults(s);
2191

    
2192
    s->avctx = avctx;
2193
    common_init(h);
2194

    
2195
    s->out_format = FMT_H264;
2196
    s->workaround_bugs= avctx->workaround_bugs;
2197

    
2198
    // set defaults
2199
//    s->decode_mb= ff_h263_decode_mb;
2200
    s->quarter_sample = 1;
2201
    s->low_delay= 1;
2202
    avctx->pix_fmt= PIX_FMT_YUV420P;
2203

    
2204
    decode_init_vlc();
2205

    
2206
    if(avctx->extradata_size > 0 && avctx->extradata &&
2207
       *(char *)avctx->extradata == 1){
2208
        h->is_avc = 1;
2209
        h->got_avcC = 0;
2210
    } else {
2211
        h->is_avc = 0;
2212
    }
2213

    
2214
    h->thread_context[0] = h;
2215
    return 0;
2216
}
2217

    
2218
static int frame_start(H264Context *h){
2219
    MpegEncContext * const s = &h->s;
2220
    int i;
2221

    
2222
    if(MPV_frame_start(s, s->avctx) < 0)
2223
        return -1;
2224
    ff_er_frame_start(s);
2225
    /*
2226
     * MPV_frame_start uses pict_type to derive key_frame.
2227
     * This is incorrect for H.264; IDR markings must be used.
2228
     * Zero here; IDR markings per slice in frame or fields are OR'd in later.
2229
     * See decode_nal_units().
2230
     */
2231
    s->current_picture_ptr->key_frame= 0;
2232

    
2233
    assert(s->linesize && s->uvlinesize);
2234

    
2235
    for(i=0; i<16; i++){
2236
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2237
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2238
    }
2239
    for(i=0; i<4; i++){
2240
        h->block_offset[16+i]=
2241
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2242
        h->block_offset[24+16+i]=
2243
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2244
    }
2245

    
2246
    /* can't be in alloc_tables because linesize isn't known there.
2247
     * FIXME: redo bipred weight to not require extra buffer? */
2248
    for(i = 0; i < s->avctx->thread_count; i++)
2249
        if(!h->thread_context[i]->s.obmc_scratchpad)
2250
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2251

    
2252
    /* some macroblocks will be accessed before they're available */
2253
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
2254
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(uint8_t));
2255

    
2256
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2257
    return 0;
2258
}
2259

    
2260
static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){
2261
    MpegEncContext * const s = &h->s;
2262
    int i;
2263

    
2264
    src_y  -=   linesize;
2265
    src_cb -= uvlinesize;
2266
    src_cr -= uvlinesize;
2267

    
2268
    // There are two lines saved, the line above the the top macroblock of a pair,
2269
    // and the line above the bottom macroblock
2270
    h->left_border[0]= h->top_borders[0][s->mb_x][15];
2271
    for(i=1; i<17; i++){
2272
        h->left_border[i]= src_y[15+i*  linesize];
2273
    }
2274

    
2275
    *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
2276
    *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2277

    
2278
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2279
        h->left_border[17  ]= h->top_borders[0][s->mb_x][16+7];
2280
        h->left_border[17+9]= h->top_borders[0][s->mb_x][24+7];
2281
        for(i=1; i<9; i++){
2282
            h->left_border[i+17  ]= src_cb[7+i*uvlinesize];
2283
            h->left_border[i+17+9]= src_cr[7+i*uvlinesize];
2284
        }
2285
        *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2286
        *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2287
    }
2288
}
2289

    
2290
static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int simple){
2291
    MpegEncContext * const s = &h->s;
2292
    int temp8, i;
2293
    uint64_t temp64;
2294
    int deblock_left;
2295
    int deblock_top;
2296
    int mb_xy;
2297

    
2298
    if(h->deblocking_filter == 2) {
2299
        mb_xy = s->mb_x + s->mb_y*s->mb_stride;
2300
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2301
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2302
    } else {
2303
        deblock_left = (s->mb_x > 0);
2304
        deblock_top =  (s->mb_y > 0);
2305
    }
2306

    
2307
    src_y  -=   linesize + 1;
2308
    src_cb -= uvlinesize + 1;
2309
    src_cr -= uvlinesize + 1;
2310

    
2311
#define XCHG(a,b,t,xchg)\
2312
t= a;\
2313
if(xchg)\
2314
    a= b;\
2315
b= t;
2316

    
2317
    if(deblock_left){
2318
        for(i = !deblock_top; i<17; i++){
2319
            XCHG(h->left_border[i     ], src_y [i*  linesize], temp8, xchg);
2320
        }
2321
    }
2322

    
2323
    if(deblock_top){
2324
        XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2325
        XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2326
        if(s->mb_x+1 < s->mb_width){
2327
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2328
        }
2329
    }
2330

    
2331
    if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2332
        if(deblock_left){
2333
            for(i = !deblock_top; i<9; i++){
2334
                XCHG(h->left_border[i+17  ], src_cb[i*uvlinesize], temp8, xchg);
2335
                XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg);
2336
            }
2337
        }
2338
        if(deblock_top){
2339
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2340
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2341
        }
2342
    }
2343
}
2344

    
2345
static inline void backup_pair_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){
2346
    MpegEncContext * const s = &h->s;
2347
    int i;
2348

    
2349
    src_y  -= 2 *   linesize;
2350
    src_cb -= 2 * uvlinesize;
2351
    src_cr -= 2 * uvlinesize;
2352

    
2353
    // There are two lines saved, the line above the the top macroblock of a pair,
2354
    // and the line above the bottom macroblock
2355
    h->left_border[0]= h->top_borders[0][s->mb_x][15];
2356
    h->left_border[1]= h->top_borders[1][s->mb_x][15];
2357
    for(i=2; i<34; i++){
2358
        h->left_border[i]= src_y[15+i*  linesize];
2359
    }
2360

    
2361
    *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y +  32*linesize);
2362
    *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+32*linesize);
2363
    *(uint64_t*)(h->top_borders[1][s->mb_x]+0)= *(uint64_t*)(src_y +  33*linesize);
2364
    *(uint64_t*)(h->top_borders[1][s->mb_x]+8)= *(uint64_t*)(src_y +8+33*linesize);
2365

    
2366
    if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2367
        h->left_border[34     ]= h->top_borders[0][s->mb_x][16+7];
2368
        h->left_border[34+   1]= h->top_borders[1][s->mb_x][16+7];
2369
        h->left_border[34+18  ]= h->top_borders[0][s->mb_x][24+7];
2370
        h->left_border[34+18+1]= h->top_borders[1][s->mb_x][24+7];
2371
        for(i=2; i<18; i++){
2372
            h->left_border[i+34   ]= src_cb[7+i*uvlinesize];
2373
            h->left_border[i+34+18]= src_cr[7+i*uvlinesize];
2374
        }
2375
        *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+16*uvlinesize);
2376
        *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+16*uvlinesize);
2377
        *(uint64_t*)(h->top_borders[1][s->mb_x]+16)= *(uint64_t*)(src_cb+17*uvlinesize);
2378
        *(uint64_t*)(h->top_borders[1][s->mb_x]+24)= *(uint64_t*)(src_cr+17*uvlinesize);
2379
    }
2380
}
2381

    
2382
static inline void xchg_pair_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg){
2383
    MpegEncContext * const s = &h->s;
2384
    int temp8, i;
2385
    uint64_t temp64;
2386
    int deblock_left = (s->mb_x > 0);
2387
    int deblock_top  = (s->mb_y > 1);
2388

    
2389
    tprintf(s->avctx, "xchg_pair_border: src_y:%p src_cb:%p src_cr:%p ls:%d uvls:%d\n", src_y, src_cb, src_cr, linesize, uvlinesize);
2390

    
2391
    src_y  -= 2 *   linesize + 1;
2392
    src_cb -= 2 * uvlinesize + 1;
2393
    src_cr -= 2 * uvlinesize + 1;
2394

    
2395
#define XCHG(a,b,t,xchg)\
2396
t= a;\
2397
if(xchg)\
2398
    a= b;\
2399
b= t;
2400

    
2401
    if(deblock_left){
2402
        for(i = (!deblock_top)<<1; i<34; i++){
2403
            XCHG(h->left_border[i     ], src_y [i*  linesize], temp8, xchg);
2404
        }
2405
    }
2406

    
2407
    if(deblock_top){
2408
        XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2409
        XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2410
        XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+0), *(uint64_t*)(src_y +1 +linesize), temp64, xchg);
2411
        XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+8), *(uint64_t*)(src_y +9 +linesize), temp64, 1);
2412
        if(s->mb_x+1 < s->mb_width){
2413
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2414
            XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x+1]), *(uint64_t*)(src_y +17 +linesize), temp64, 1);
2415
        }
2416
    }
2417

    
2418
    if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2419
        if(deblock_left){
2420
            for(i = (!deblock_top) << 1; i<18; i++){
2421
                XCHG(h->left_border[i+34   ], src_cb[i*uvlinesize], temp8, xchg);
2422
                XCHG(h->left_border[i+34+18], src_cr[i*uvlinesize], temp8, xchg);
2423
            }
2424
        }
2425
        if(deblock_top){
2426
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2427
            XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2428
            XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+16), *(uint64_t*)(src_cb+1 +uvlinesize), temp64, 1);
2429
            XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+24), *(uint64_t*)(src_cr+1 +uvlinesize), temp64, 1);
2430
        }
2431
    }
2432
}
2433

    
2434
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2435
    MpegEncContext * const s = &h->s;
2436
    const int mb_x= s->mb_x;
2437
    const int mb_y= s->mb_y;
2438
    const int mb_xy= mb_x + mb_y*s->mb_stride;
2439
    const int mb_type= s->current_picture.mb_type[mb_xy];
2440
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2441
    int linesize, uvlinesize /*dct_offset*/;
2442
    int i;
2443
    int *block_offset = &h->block_offset[0];
2444
    const unsigned int bottom = mb_y & 1;
2445
    const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
2446
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2447
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2448

    
2449
    dest_y  = s->current_picture.data[0] + (mb_y * 16* s->linesize  ) + mb_x * 16;
2450
    dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2451
    dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2452

    
2453
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2454
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2455

    
2456
    if (!simple && MB_FIELD) {
2457
        linesize   = h->mb_linesize   = s->linesize * 2;
2458
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2459
        block_offset = &h->block_offset[24];
2460
        if(mb_y&1){ //FIXME move out of this func?
2461
            dest_y -= s->linesize*15;
2462
            dest_cb-= s->uvlinesize*7;
2463
            dest_cr-= s->uvlinesize*7;
2464
        }
2465
        if(FRAME_MBAFF) {
2466
            int list;
2467
            for(list=0; list<h->list_count; list++){
2468
                if(!USES_LIST(mb_type, list))
2469
                    continue;
2470
                if(IS_16X16(mb_type)){
2471
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
2472
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2473
                }else{
2474
                    for(i=0; i<16; i+=4){
2475
                        //FIXME can refs be smaller than 8x8 when !direct_8x8_inference ?
2476
                        int ref = h->ref_cache[list][scan8[i]];
2477
                        if(ref >= 0)
2478
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2479
                    }
2480
                }
2481
            }
2482
        }
2483
    } else {
2484
        linesize   = h->mb_linesize   = s->linesize;
2485
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2486
//        dct_offset = s->linesize * 16;
2487
    }
2488

    
2489
    if(transform_bypass){
2490
        idct_dc_add =
2491
        idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2492
    }else if(IS_8x8DCT(mb_type)){
2493
        idct_dc_add = s->dsp.h264_idct8_dc_add;
2494
        idct_add = s->dsp.h264_idct8_add;
2495
    }else{
2496
        idct_dc_add = s->dsp.h264_idct_dc_add;
2497
        idct_add = s->dsp.h264_idct_add;
2498
    }
2499

    
2500
    if(!simple && FRAME_MBAFF && h->deblocking_filter && IS_INTRA(mb_type)
2501
       && (!bottom || !IS_INTRA(s->current_picture.mb_type[mb_xy-s->mb_stride]))){
2502
        int mbt_y = mb_y&~1;
2503
        uint8_t *top_y  = s->current_picture.data[0] + (mbt_y * 16* s->linesize  ) + mb_x * 16;
2504
        uint8_t *top_cb = s->current_picture.data[1] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2505
        uint8_t *top_cr = s->current_picture.data[2] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2506
        xchg_pair_border(h, top_y, top_cb, top_cr, s->linesize, s->uvlinesize, 1);
2507
    }
2508

    
2509
    if (!simple && IS_INTRA_PCM(mb_type)) {
2510
        unsigned int x, y;
2511

    
2512
        // The pixels are stored in h->mb array in the same order as levels,
2513
        // copy them in output in the correct order.
2514
        for(i=0; i<16; i++) {
2515
            for (y=0; y<4; y++) {
2516
                for (x=0; x<4; x++) {
2517
                    *(dest_y + block_offset[i] + y*linesize + x) = h->mb[i*16+y*4+x];
2518
                }
2519
            }
2520
        }
2521
        for(i=16; i<16+4; i++) {
2522
            for (y=0; y<4; y++) {
2523
                for (x=0; x<4; x++) {
2524
                    *(dest_cb + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
2525
                }
2526
            }
2527
        }
2528
        for(i=20; i<20+4; i++) {
2529
            for (y=0; y<4; y++) {
2530
                for (x=0; x<4; x++) {
2531
                    *(dest_cr + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
2532
                }
2533
            }
2534
        }
2535
    } else {
2536
        if(IS_INTRA(mb_type)){
2537
            if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2538
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2539

    
2540
            if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2541
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2542
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2543
            }
2544

    
2545
            if(IS_INTRA4x4(mb_type)){
2546
                if(simple || !s->encoding){
2547
                    if(IS_8x8DCT(mb_type)){
2548
                        for(i=0; i<16; i+=4){
2549
                            uint8_t * const ptr= dest_y + block_offset[i];
2550
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2551
                            const int nnz = h->non_zero_count_cache[ scan8[i] ];
2552
                            h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2553
                                                   (h->topright_samples_available<<i)&0x4000, linesize);
2554
                            if(nnz){
2555
                                if(nnz == 1 && h->mb[i*16])
2556
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2557
                                else
2558
                                    idct_add(ptr, h->mb + i*16, linesize);
2559
                            }
2560
                        }
2561
                    }else
2562
                    for(i=0; i<16; i++){
2563
                        uint8_t * const ptr= dest_y + block_offset[i];
2564
                        uint8_t *topright;
2565
                        const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2566
                        int nnz, tr;
2567

    
2568
                        if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2569
                            const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2570
                            assert(mb_y || linesize <= block_offset[i]);
2571
                            if(!topright_avail){
2572
                                tr= ptr[3 - linesize]*0x01010101;
2573
                                topright= (uint8_t*) &tr;
2574
                            }else
2575
                                topright= ptr + 4 - linesize;
2576
                        }else
2577
                            topright= NULL;
2578

    
2579
                        h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2580
                        nnz = h->non_zero_count_cache[ scan8[i] ];
2581
                        if(nnz){
2582
                            if(is_h264){
2583
                                if(nnz == 1 && h->mb[i*16])
2584
                                    idct_dc_add(ptr, h->mb + i*16, linesize);
2585
                                else
2586
                                    idct_add(ptr, h->mb + i*16, linesize);
2587
                            }else
2588
                                svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2589
                        }
2590
                    }
2591
                }
2592
            }else{
2593
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2594
                if(is_h264){
2595
                    if(!transform_bypass)
2596
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2597
                }else
2598
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2599
            }
2600
            if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2601
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2602
        }else if(is_h264){
2603
            hl_motion(h, dest_y, dest_cb, dest_cr,
2604
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2605
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2606
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2607
        }
2608

    
2609

    
2610
        if(!IS_INTRA4x4(mb_type)){
2611
            if(is_h264){
2612
                if(IS_INTRA16x16(mb_type)){
2613
                    for(i=0; i<16; i++){
2614
                        if(h->non_zero_count_cache[ scan8[i] ])
2615
                            idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2616
                        else if(h->mb[i*16])
2617
                            idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2618
                    }
2619
                }else{
2620
                    const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2621
                    for(i=0; i<16; i+=di){
2622
                        int nnz = h->non_zero_count_cache[ scan8[i] ];
2623
                        if(nnz){
2624
                            if(nnz==1 && h->mb[i*16])
2625
                                idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2626
                            else
2627
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2628
                        }
2629
                    }
2630
                }
2631
            }else{
2632
                for(i=0; i<16; i++){
2633
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2634
                        uint8_t * const ptr= dest_y + block_offset[i];
2635
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2636
                    }
2637
                }
2638
            }
2639
        }
2640

    
2641
        if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2642
            uint8_t *dest[2] = {dest_cb, dest_cr};
2643
            if(transform_bypass){
2644
                idct_add = idct_dc_add = s->dsp.add_pixels4;
2645
            }else{
2646
                idct_add = s->dsp.h264_idct_add;
2647
                idct_dc_add = s->dsp.h264_idct_dc_add;
2648
                chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
2649
                chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
2650
            }
2651
            if(is_h264){
2652
                for(i=16; i<16+8; i++){
2653
                    if(h->non_zero_count_cache[ scan8[i] ])
2654
                        idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2655
                    else if(h->mb[i*16])
2656
                        idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2657
                }
2658
            }else{
2659
                for(i=16; i<16+8; i++){
2660
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2661
                        uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2662
                        svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2663
                    }
2664
                }
2665
            }
2666
        }
2667
    }
2668
    if(h->deblocking_filter) {
2669
        if (!simple && FRAME_MBAFF) {
2670
            //FIXME try deblocking one mb at a time?
2671
            // the reduction in load/storing mvs and such might outweigh the extra backup/xchg_border
2672
            const int mb_y = s->mb_y - 1;
2673
            uint8_t  *pair_dest_y, *pair_dest_cb, *pair_dest_cr;
2674
            const int mb_xy= mb_x + mb_y*s->mb_stride;
2675
            const int mb_type_top   = s->current_picture.mb_type[mb_xy];
2676
            const int mb_type_bottom= s->current_picture.mb_type[mb_xy+s->mb_stride];
2677
            if (!bottom) return;
2678
            pair_dest_y  = s->current_picture.data[0] + (mb_y * 16* s->linesize  ) + mb_x * 16;
2679
            pair_dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2680
            pair_dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2681

    
2682
            if(IS_INTRA(mb_type_top | mb_type_bottom))
2683
                xchg_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize, 0);
2684

    
2685
            backup_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize);
2686
            // deblock a pair
2687
            // top
2688
            s->mb_y--;
2689
            tprintf(h->s.avctx, "call mbaff filter_mb mb_x:%d mb_y:%d pair_dest_y = %p, dest_y = %p\n", mb_x, mb_y, pair_dest_y, dest_y);
2690
            fill_caches(h, mb_type_top, 1); //FIXME don't fill stuff which isn't used by filter_mb
2691
            h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2692
            h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2693
            filter_mb(h, mb_x, mb_y, pair_dest_y, pair_dest_cb, pair_dest_cr, linesize, uvlinesize);
2694
            // bottom
2695
            s->mb_y++;
2696
            tprintf(h->s.avctx, "call mbaff filter_mb\n");
2697
            fill_caches(h, mb_type_bottom, 1); //FIXME don't fill stuff which isn't used by filter_mb
2698
            h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2699
            h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2700
            filter_mb(h, mb_x, mb_y+1, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2701
        } else {
2702
            tprintf(h->s.avctx, "call filter_mb\n");
2703
            backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2704
            fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2705
            filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2706
        }
2707
    }
2708
}
2709

    
2710
/**
2711
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2712
 */
2713
static void hl_decode_mb_simple(H264Context *h){
2714
    hl_decode_mb_internal(h, 1);
2715
}
2716

    
2717
/**
2718
 * Process a macroblock; this handles edge cases, such as interlacing.
2719
 */
2720
static void av_noinline hl_decode_mb_complex(H264Context *h){
2721
    hl_decode_mb_internal(h, 0);
2722
}
2723

    
2724
static void hl_decode_mb(H264Context *h){
2725
    MpegEncContext * const s = &h->s;
2726
    const int mb_x= s->mb_x;
2727
    const int mb_y= s->mb_y;
2728
    const int mb_xy= mb_x + mb_y*s->mb_stride;
2729
    const int mb_type= s->current_picture.mb_type[mb_xy];
2730
    int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 || (ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || s->encoding;
2731

    
2732
    if(!s->decode)
2733
        return;
2734

    
2735
    if (is_complex)
2736
        hl_decode_mb_complex(h);
2737
    else hl_decode_mb_simple(h);
2738
}
2739

    
2740
static void pic_as_field(Picture *pic, const int parity){
2741
    int i;
2742
    for (i = 0; i < 4; ++i) {
2743
        if (parity == PICT_BOTTOM_FIELD)
2744
            pic->data[i] += pic->linesize[i];
2745
        pic->reference = parity;
2746
        pic->linesize[i] *= 2;
2747
    }
2748
}
2749

    
2750
static int split_field_copy(Picture *dest, Picture *src,
2751
                            int parity, int id_add){
2752
    int match = !!(src->reference & parity);
2753

    
2754
    if (match) {
2755
        *dest = *src;
2756
        pic_as_field(dest, parity);
2757
        dest->pic_id *= 2;
2758
        dest->pic_id += id_add;
2759
    }
2760

    
2761
    return match;
2762
}
2763

    
2764
/**
2765
 * Split one reference list into field parts, interleaving by parity
2766
 * as per H.264 spec section 8.2.4.2.5. Output fields have their data pointers
2767
 * set to look at the actual start of data for that field.
2768
 *
2769
 * @param dest output list
2770
 * @param dest_len maximum number of fields to put in dest
2771
 * @param src the source reference list containing fields and/or field pairs
2772
 *            (aka short_ref/long_ref, or
2773
 *             refFrameListXShortTerm/refFrameListLongTerm in spec-speak)
2774
 * @param src_len number of Picture's in source (pairs and unmatched fields)
2775
 * @param parity the parity of the picture being decoded/needing
2776
 *        these ref pics (PICT_{TOP,BOTTOM}_FIELD)
2777
 * @return number of fields placed in dest
2778
 */
2779
static int split_field_half_ref_list(Picture *dest, int dest_len,
2780
                                     Picture *src,  int src_len,  int parity){
2781
    int same_parity   = 1;
2782
    int same_i        = 0;
2783
    int opp_i         = 0;
2784
    int out_i;
2785
    int field_output;
2786

    
2787
    for (out_i = 0; out_i < dest_len; out_i += field_output) {
2788
        if (same_parity && same_i < src_len) {
2789
            field_output = split_field_copy(dest + out_i, src + same_i,
2790
                                            parity, 1);
2791
            same_parity = !field_output;
2792
            same_i++;
2793

    
2794
        } else if (opp_i < src_len) {
2795
            field_output = split_field_copy(dest + out_i, src + opp_i,
2796
                                            PICT_FRAME - parity, 0);
2797
            same_parity = field_output;
2798
            opp_i++;
2799

    
2800
        } else {
2801
            break;
2802
        }
2803
    }
2804

    
2805
    return out_i;
2806
}
2807

    
2808
/**
2809
 * Split the reference frame list into a reference field list.
2810
 * This implements H.264 spec 8.2.4.2.5 for a combined input list.
2811
 * The input list contains both reference field pairs and
2812
 * unmatched reference fields; it is ordered as spec describes
2813
 * RefPicListX for frames in 8.2.4.2.1 and 8.2.4.2.3, except that
2814
 * unmatched field pairs are also present. Conceptually this is equivalent
2815
 * to concatenation of refFrameListXShortTerm with refFrameListLongTerm.
2816
 *
2817
 * @param dest output reference list where ordered fields are to be placed
2818
 * @param dest_len max number of fields to place at dest
2819
 * @param src source reference list, as described above
2820
 * @param src_len number of pictures (pairs and unmatched fields) in src
2821
 * @param parity parity of field being currently decoded
2822
 *        (one of PICT_{TOP,BOTTOM}_FIELD)
2823
 * @param long_i index into src array that holds first long reference picture,
2824
 *        or src_len if no long refs present.
2825
 */
2826
static int split_field_ref_list(Picture *dest, int dest_len,
2827
                                Picture *src,  int src_len,
2828
                                int parity,    int long_i){
2829

    
2830
    int i = split_field_half_ref_list(dest, dest_len, src, long_i, parity);
2831
    dest += i;
2832
    dest_len -= i;
2833

    
2834
    i += split_field_half_ref_list(dest, dest_len, src + long_i,
2835
                                   src_len - long_i, parity);
2836
    return i;
2837
}
2838

    
2839
/**
2840
 * fills the default_ref_list.
2841
 */
2842
static int fill_default_ref_list(H264Context *h){
2843
    MpegEncContext * const s = &h->s;
2844
    int i;
2845
    int smallest_poc_greater_than_current = -1;
2846
    int structure_sel;
2847
    Picture sorted_short_ref[32];
2848
    Picture field_entry_list[2][32];
2849
    Picture *frame_list[2];
2850

    
2851
    if (FIELD_PICTURE) {
2852
        structure_sel = PICT_FRAME;
2853
        frame_list[0] = field_entry_list[0];
2854
        frame_list[1] = field_entry_list[1];
2855
    } else {
2856
        structure_sel = 0;
2857
        frame_list[0] = h->default_ref_list[0];
2858
        frame_list[1] = h->default_ref_list[1];
2859
    }
2860

    
2861
    if(h->slice_type==FF_B_TYPE){
2862
        int list;
2863
        int len[2];
2864
        int short_len[2];
2865
        int out_i;
2866
        int limit= INT_MIN;
2867

    
2868
        /* sort frame according to poc in B slice */
2869
        for(out_i=0; out_i<h->short_ref_count; out_i++){
2870
            int best_i=INT_MIN;
2871
            int best_poc=INT_MAX;
2872

    
2873
            for(i=0; i<h->short_ref_count; i++){
2874
                const int poc= h->short_ref[i]->poc;
2875
                if(poc > limit && poc < best_poc){
2876
                    best_poc= poc;
2877
                    best_i= i;
2878
                }
2879
            }
2880

    
2881
            assert(best_i != INT_MIN);
2882

    
2883
            limit= best_poc;
2884
            sorted_short_ref[out_i]= *h->short_ref[best_i];
2885
            tprintf(h->s.avctx, "sorted poc: %d->%d poc:%d fn:%d\n", best_i, out_i, sorted_short_ref[out_i].poc, sorted_short_ref[out_i].frame_num);
2886
            if (-1 == smallest_poc_greater_than_current) {
2887
                if (h->short_ref[best_i]->poc >= s->current_picture_ptr->poc) {
2888
                    smallest_poc_greater_than_current = out_i;
2889
                }
2890
            }
2891
        }
2892

    
2893
        tprintf(h->s.avctx, "current poc: %d, smallest_poc_greater_than_current: %d\n", s->current_picture_ptr->poc, smallest_poc_greater_than_current);
2894

    
2895
        // find the largest poc
2896
        for(list=0; list<2; list++){
2897
            int index = 0;
2898
            int j= -99;
2899
            int step= list ? -1 : 1;
2900

    
2901
            for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++, j+=step) {
2902
                int sel;
2903
                while(j<0 || j>= h->short_ref_count){
2904
                    if(j != -99 && step == (list ? -1 : 1))
2905
                        return -1;
2906
                    step = -step;
2907
                    j= smallest_poc_greater_than_current + (step>>1);
2908
                }
2909
                sel = sorted_short_ref[j].reference | structure_sel;
2910
                if(sel != PICT_FRAME) continue;
2911
                frame_list[list][index  ]= sorted_short_ref[j];
2912
                frame_list[list][index++].pic_id= sorted_short_ref[j].frame_num;
2913
            }
2914
            short_len[list] = index;
2915

    
2916
            for(i = 0; i < 16 && index < h->ref_count[ list ]; i++){
2917
                int sel;
2918
                if(h->long_ref[i] == NULL) continue;
2919
                sel = h->long_ref[i]->reference | structure_sel;
2920
                if(sel != PICT_FRAME) continue;
2921

    
2922
                frame_list[ list ][index  ]= *h->long_ref[i];
2923
                frame_list[ list ][index++].pic_id= i;
2924
            }
2925
            len[list] = index;
2926
        }
2927

    
2928
        for(list=0; list<2; list++){
2929
            if (FIELD_PICTURE)
2930
                len[list] = split_field_ref_list(h->default_ref_list[list],
2931
                                                 h->ref_count[list],
2932
                                                 frame_list[list],
2933
                                                 len[list],
2934
                                                 s->picture_structure,
2935
                                                 short_len[list]);
2936

    
2937
            // swap the two first elements of L1 when L0 and L1 are identical
2938
            if(list && len[0] > 1 && len[0] == len[1])
2939
                for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0]; i++)
2940
                    if(i == len[0]){
2941
                        FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2942
                        break;
2943
                    }
2944

    
2945
            if(len[list] < h->ref_count[ list ])
2946
                memset(&h->default_ref_list[list][len[list]], 0, sizeof(Picture)*(h->ref_count[ list ] - len[list]));
2947
        }
2948

    
2949

    
2950
    }else{
2951
        int index=0;
2952
        int short_len;
2953
        for(i=0; i<h->short_ref_count; i++){
2954
            int sel;
2955
            sel = h->short_ref[i]->reference | structure_sel;
2956
            if(sel != PICT_FRAME) continue;
2957
            frame_list[0][index  ]= *h->short_ref[i];
2958
            frame_list[0][index++].pic_id= h->short_ref[i]->frame_num;
2959
        }
2960
        short_len = index;
2961
        for(i = 0; i < 16; i++){
2962
            int sel;
2963
            if(h->long_ref[i] == NULL) continue;
2964
            sel = h->long_ref[i]->reference | structure_sel;
2965
            if(sel != PICT_FRAME) continue;
2966
            frame_list[0][index  ]= *h->long_ref[i];
2967
            frame_list[0][index++].pic_id= i;
2968
        }
2969

    
2970
        if (FIELD_PICTURE)
2971
            index = split_field_ref_list(h->default_ref_list[0],
2972
                                         h->ref_count[0], frame_list[0],
2973
                                         index, s->picture_structure,
2974
                                         short_len);
2975

    
2976
        if(index < h->ref_count[0])
2977
            memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
2978
    }
2979
#ifdef TRACE
2980
    for (i=0; i<h->ref_count[0]; i++) {
2981
        tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]);
2982
    }
2983
    if(h->slice_type==FF_B_TYPE){
2984
        for (i=0; i<h->ref_count[1]; i++) {
2985
            tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]);
2986
        }
2987
    }
2988
#endif
2989
    return 0;
2990
}
2991

    
2992
static void print_short_term(H264Context *h);
2993
static void print_long_term(H264Context *h);
2994

    
2995
/**
2996
 * Extract structure information about the picture described by pic_num in
2997
 * the current decoding context (frame or field). Note that pic_num is
2998
 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2999
 * @param pic_num picture number for which to extract structure information
3000
 * @param structure one of PICT_XXX describing structure of picture
3001
 *                      with pic_num
3002
 * @return frame number (short term) or long term index of picture
3003
 *         described by pic_num
3004
 */
3005
static int pic_num_extract(H264Context *h, int pic_num, int *structure){
3006
    MpegEncContext * const s = &h->s;
3007

    
3008
    *structure = s->picture_structure;
3009
    if(FIELD_PICTURE){
3010
        if (!(pic_num & 1))
3011
            /* opposite field */
3012
            *structure ^= PICT_FRAME;
3013
        pic_num >>= 1;
3014
    }
3015

    
3016
    return pic_num;
3017
}
3018

    
3019
static int decode_ref_pic_list_reordering(H264Context *h){
3020
    MpegEncContext * const s = &h->s;
3021
    int list, index, pic_structure;
3022

    
3023
    print_short_term(h);
3024
    print_long_term(h);
3025
    if(h->slice_type==FF_I_TYPE || h->slice_type==FF_SI_TYPE) return 0; //FIXME move before func
3026

    
3027
    for(list=0; list<h->list_count; list++){
3028
        memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
3029

    
3030
        if(get_bits1(&s->gb)){
3031
            int pred= h->curr_pic_num;
3032

    
3033
            for(index=0; ; index++){
3034
                unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
3035
                unsigned int pic_id;
3036
                int i;
3037
                Picture *ref = NULL;
3038

    
3039
                if(reordering_of_pic_nums_idc==3)
3040
                    break;
3041

    
3042
                if(index >= h->ref_count[list]){
3043
                    av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
3044
                    return -1;
3045
                }
3046

    
3047
                if(reordering_of_pic_nums_idc<3){
3048
                    if(reordering_of_pic_nums_idc<2){
3049
                        const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
3050
                        int frame_num;
3051

    
3052
                        if(abs_diff_pic_num > h->max_pic_num){
3053
                            av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
3054
                            return -1;
3055
                        }
3056

    
3057
                        if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
3058
                        else                                pred+= abs_diff_pic_num;
3059
                        pred &= h->max_pic_num - 1;
3060

    
3061
                        frame_num = pic_num_extract(h, pred, &pic_structure);
3062

    
3063
                        for(i= h->short_ref_count-1; i>=0; i--){
3064
                            ref = h->short_ref[i];
3065
                            assert(ref->reference);
3066
                            assert(!ref->long_ref);
3067
                            if(ref->data[0] != NULL &&
3068
                                   ref->frame_num == frame_num &&
3069
                                   (ref->reference & pic_structure) &&
3070
                                   ref->long_ref == 0) // ignore non existing pictures by testing data[0] pointer
3071
                                break;
3072
                        }
3073
                        if(i>=0)
3074
                            ref->pic_id= pred;
3075
                    }else{
3076
                        int long_idx;
3077
                        pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
3078

    
3079
                        long_idx= pic_num_extract(h, pic_id, &pic_structure);
3080

    
3081
                        if(long_idx>31){
3082
                            av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
3083
                            return -1;
3084
                        }
3085
                        ref = h->long_ref[long_idx];
3086
                        assert(!(ref && !ref->reference));
3087
                        if(ref && (ref->reference & pic_structure)){
3088
                            ref->pic_id= pic_id;
3089
                            assert(ref->long_ref);
3090
                            i=0;
3091
                        }else{
3092
                            i=-1;
3093
                        }
3094
                    }
3095

    
3096
                    if (i < 0) {
3097
                        av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
3098
                        memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
3099
                    } else {
3100
                        for(i=index; i+1<h->ref_count[list]; i++){
3101
                            if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
3102
                                break;
3103
                        }
3104
                        for(; i > index; i--){
3105
                            h->ref_list[list][i]= h->ref_list[list][i-1];
3106
                        }
3107
                        h->ref_list[list][index]= *ref;
3108
                        if (FIELD_PICTURE){
3109
                            pic_as_field(&h->ref_list[list][index], pic_structure);
3110
                        }
3111
                    }
3112
                }else{
3113
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
3114
                    return -1;
3115
                }
3116
            }
3117
        }
3118
    }
3119
    for(list=0; list<h->list_count; list++){
3120
        for(index= 0; index < h->ref_count[list]; index++){
3121
            if(!h->ref_list[list][index].data[0])
3122
                h->ref_list[list][index]= s->current_picture;
3123
        }
3124
    }
3125

    
3126
    if(h->slice_type==FF_B_TYPE && !h->direct_spatial_mv_pred)
3127
        direct_dist_scale_factor(h);
3128
    direct_ref_list_init(h);
3129
    return 0;
3130
}
3131

    
3132
static void fill_mbaff_ref_list(H264Context *h){
3133
    int list, i, j;
3134
    for(list=0; list<2; list++){ //FIXME try list_count
3135
        for(i=0; i<h->ref_count[list]; i++){
3136
            Picture *frame = &h->ref_list[list][i];
3137
            Picture *field = &h->ref_list[list][16+2*i];
3138
            field[0] = *frame;
3139
            for(j=0; j<3; j++)
3140
                field[0].linesize[j] <<= 1;
3141
            field[0].reference = PICT_TOP_FIELD;
3142
            field[1] = field[0];
3143
            for(j=0; j<3; j++)
3144
                field[1].data[j] += frame->linesize[j];
3145
            field[1].reference = PICT_BOTTOM_FIELD;
3146

    
3147
            h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
3148
            h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
3149
            for(j=0; j<2; j++){
3150
                h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
3151
                h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
3152
            }
3153
        }
3154
    }
3155
    for(j=0; j<h->ref_count[1]; j++){
3156
        for(i=0; i<h->ref_count[0]; i++)
3157
            h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
3158
        memcpy(h->implicit_weight[16+2*j],   h->implicit_weight[j], sizeof(*h->implicit_weight));
3159
        memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
3160
    }
3161
}
3162

    
3163
static int pred_weight_table(H264Context *h){
3164
    MpegEncContext * const s = &h->s;
3165
    int list, i;
3166
    int luma_def, chroma_def;
3167

    
3168
    h->use_weight= 0;
3169
    h->use_weight_chroma= 0;
3170
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
3171
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
3172
    luma_def = 1<<h->luma_log2_weight_denom;
3173
    chroma_def = 1<<h->chroma_log2_weight_denom;
3174

    
3175
    for(list=0; list<2; list++){
3176
        for(i=0; i<h->ref_count[list]; i++){
3177
            int luma_weight_flag, chroma_weight_flag;
3178

    
3179
            luma_weight_flag= get_bits1(&s->gb);
3180
            if(luma_weight_flag){
3181
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
3182
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
3183
                if(   h->luma_weight[list][i] != luma_def
3184
                   || h->luma_offset[list][i] != 0)
3185
                    h->use_weight= 1;
3186
            }else{
3187
                h->luma_weight[list][i]= luma_def;
3188
                h->luma_offset[list][i]= 0;
3189
            }
3190

    
3191
            chroma_weight_flag= get_bits1(&s->gb);
3192
            if(chroma_weight_flag){
3193
                int j;
3194
                for(j=0; j<2; j++){
3195
                    h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3196
                    h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
3197
                    if(   h->chroma_weight[list][i][j] != chroma_def
3198
                       || h->chroma_offset[list][i][j] != 0)
3199
                        h->use_weight_chroma= 1;
3200
                }
3201
            }else{
3202
                int j;
3203
                for(j=0; j<2; j++){
3204
                    h->chroma_weight[list][i][j]= chroma_def;
3205
                    h->chroma_offset[list][i][j]= 0;
3206
                }
3207
            }
3208
        }
3209
        if(h->slice_type != FF_B_TYPE) break;
3210
    }
3211
    h->use_weight= h->use_weight || h->use_weight_chroma;
3212
    return 0;
3213
}
3214

    
3215
static void implicit_weight_table(H264Context *h){
3216
    MpegEncContext * const s = &h->s;
3217
    int ref0, ref1;
3218
    int cur_poc = s->current_picture_ptr->poc;
3219

    
3220
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
3221
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3222
        h->use_weight= 0;
3223
        h->use_weight_chroma= 0;
3224
        return;
3225
    }
3226

    
3227
    h->use_weight= 2;
3228
    h->use_weight_chroma= 2;
3229
    h->luma_log2_weight_denom= 5;
3230
    h->chroma_log2_weight_denom= 5;
3231

    
3232
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3233
        int poc0 = h->ref_list[0][ref0].poc;
3234
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3235
            int poc1 = h->ref_list[1][ref1].poc;
3236
            int td = av_clip(poc1 - poc0, -128, 127);
3237
            if(td){
3238
                int tb = av_clip(cur_poc - poc0, -128, 127);
3239
                int tx = (16384 + (FFABS(td) >> 1)) / td;
3240
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3241
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
3242
                    h->implicit_weight[ref0][ref1] = 32;
3243
                else
3244
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3245
            }else
3246
                h->implicit_weight[ref0][ref1] = 32;
3247
        }
3248
    }
3249
}
3250

    
3251
/**
3252
 * Mark a picture as no longer needed for reference. The refmask
3253
 * argument allows unreferencing of individual fields or the whole frame.
3254
 * If the picture becomes entirely unreferenced, but is being held for
3255
 * display purposes, it is marked as such.
3256
 * @param refmask mask of fields to unreference; the mask is bitwise
3257
 *                anded with the reference marking of pic
3258
 * @return non-zero if pic becomes entirely unreferenced (except possibly
3259
 *         for display purposes) zero if one of the fields remains in
3260
 *         reference
3261
 */
3262
static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3263
    int i;
3264
    if (pic->reference &= refmask) {
3265
        return 0;
3266
    } else {
3267
        if(pic == h->delayed_output_pic)
3268
            pic->reference=DELAYED_PIC_REF;
3269
        else{
3270
            for(i = 0; h->delayed_pic[i]; i++)
3271
                if(pic == h->delayed_pic[i]){
3272
                    pic->reference=DELAYED_PIC_REF;
3273
                    break;
3274
                }
3275
        }
3276
        return 1;
3277
    }
3278
}
3279

    
3280
/**
3281
 * instantaneous decoder refresh.
3282
 */
3283
static void idr(H264Context *h){
3284
    int i;
3285

    
3286
    for(i=0; i<16; i++){
3287
        if (h->long_ref[i] != NULL) {
3288
            unreference_pic(h, h->long_ref[i], 0);
3289
            h->long_ref[i]= NULL;
3290
        }
3291
    }
3292
    h->long_ref_count=0;
3293

    
3294
    for(i=0; i<h->short_ref_count; i++){
3295
        unreference_pic(h, h->short_ref[i], 0);
3296
        h->short_ref[i]= NULL;
3297
    }
3298
    h->short_ref_count=0;
3299
}
3300

    
3301
/* forget old pics after a seek */
3302
static void flush_dpb(AVCodecContext *avctx){
3303
    H264Context *h= avctx->priv_data;
3304
    int i;
3305
    for(i=0; i<16; i++) {
3306
        if(h->delayed_pic[i])
3307
            h->delayed_pic[i]->reference= 0;
3308
        h->delayed_pic[i]= NULL;
3309
    }
3310
    if(h->delayed_output_pic)
3311
        h->delayed_output_pic->reference= 0;
3312
    h->delayed_output_pic= NULL;
3313
    idr(h);
3314
    if(h->s.current_picture_ptr)
3315
        h->s.current_picture_ptr->reference= 0;
3316
    h->s.first_field= 0;
3317
    ff_mpeg_flush(avctx);
3318
}
3319

    
3320
/**
3321
 * Find a Picture in the short term reference list by frame number.
3322
 * @param frame_num frame number to search for
3323
 * @param idx the index into h->short_ref where returned picture is found
3324
 *            undefined if no picture found.
3325
 * @return pointer to the found picture, or NULL if no pic with the provided
3326
 *                 frame number is found
3327
 */
3328
static Picture * find_short(H264Context *h, int frame_num, int *idx){
3329
    MpegEncContext * const s = &h->s;
3330
    int i;
3331

    
3332
    for(i=0; i<h->short_ref_count; i++){
3333
        Picture *pic= h->short_ref[i];
3334
        if(s->avctx->debug&FF_DEBUG_MMCO)
3335
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3336
        if(pic->frame_num == frame_num) {
3337
            *idx = i;
3338
            return pic;
3339
        }
3340
    }
3341
    return NULL;
3342
}
3343

    
3344
/**
3345
 * Remove a picture from the short term reference list by its index in
3346
 * that list.  This does no checking on the provided index; it is assumed
3347
 * to be valid. Other list entries are shifted down.
3348
 * @param i index into h->short_ref of picture to remove.
3349
 */
3350
static void remove_short_at_index(H264Context *h, int i){
3351
    assert(i > 0 && i < h->short_ref_count);
3352
    h->short_ref[i]= NULL;
3353
    if (--h->short_ref_count)
3354
        memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3355
}
3356

    
3357
/**
3358
 *
3359
 * @return the removed picture or NULL if an error occurs
3360
 */
3361
static Picture * remove_short(H264Context *h, int frame_num){
3362
    MpegEncContext * const s = &h->s;
3363
    Picture *pic;
3364
    int i;
3365

    
3366
    if(s->avctx->debug&FF_DEBUG_MMCO)
3367
        av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3368

    
3369
    pic = find_short(h, frame_num, &i);
3370
    if (pic)
3371
        remove_short_at_index(h, i);
3372

    
3373
    return pic;
3374
}
3375

    
3376
/**
3377
 * Remove a picture from the long term reference list by its index in
3378
 * that list.  This does no checking on the provided index; it is assumed
3379
 * to be valid. The removed entry is set to NULL. Other entries are unaffected.
3380
 * @param i index into h->long_ref of picture to remove.
3381
 */
3382
static void remove_long_at_index(H264Context *h, int i){
3383
    h->long_ref[i]= NULL;
3384
    h->long_ref_count--;
3385
}
3386

    
3387
/**
3388
 *
3389
 * @return the removed picture or NULL if an error occurs
3390
 */
3391
static Picture * remove_long(H264Context *h, int i){
3392
    Picture *pic;
3393

    
3394
    pic= h->long_ref[i];
3395
    if (pic)
3396
        remove_long_at_index(h, i);
3397

    
3398
    return pic;
3399
}
3400

    
3401
/**
3402
 * print short term list
3403
 */
3404
static void print_short_term(H264Context *h) {
3405
    uint32_t i;
3406
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3407
        av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3408
        for(i=0; i<h->short_ref_count; i++){
3409
            Picture *pic= h->short_ref[i];
3410
            av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3411
        }
3412
    }
3413
}
3414

    
3415
/**
3416
 * print long term list
3417
 */
3418
static void print_long_term(H264Context *h) {
3419
    uint32_t i;
3420
    if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3421
        av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3422
        for(i = 0; i < 16; i++){
3423
            Picture *pic= h->long_ref[i];
3424
            if (pic) {
3425
                av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3426
            }
3427
        }
3428
    }
3429
}
3430

    
3431
/**
3432
 * Executes the reference picture marking (memory management control operations).
3433
 */
3434
static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3435
    MpegEncContext * const s = &h->s;
3436
    int i, j;
3437
    int current_ref_assigned=0;
3438
    Picture *pic;
3439

    
3440
    if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3441
        av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3442

    
3443
    for(i=0; i<mmco_count; i++){
3444
        int structure, frame_num, unref_pic;
3445
        if(s->avctx->debug&FF_DEBUG_MMCO)
3446
            av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_pic_num, h->mmco[i].long_arg);
3447

    
3448
        switch(mmco[i].opcode){
3449
        case MMCO_SHORT2UNUSED:
3450
            if(s->avctx->debug&FF_DEBUG_MMCO)
3451
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short %d count %d\n", h->mmco[i].short_pic_num, h->short_ref_count);
3452
            frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3453
            pic = find_short(h, frame_num, &j);
3454
            if (pic) {
3455
                if (unreference_pic(h, pic, structure ^ PICT_FRAME))
3456
                    remove_short_at_index(h, j);
3457
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3458
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short failure\n");
3459
            break;
3460
        case MMCO_SHORT2LONG:
3461
            if (FIELD_PICTURE && mmco[i].long_arg < h->long_ref_count &&
3462
                    h->long_ref[mmco[i].long_arg]->frame_num ==
3463
                                              mmco[i].short_pic_num / 2) {
3464
                /* do nothing, we've already moved this field pair. */
3465
            } else {
3466
                int frame_num = mmco[i].short_pic_num >> FIELD_PICTURE;
3467

    
3468
                pic= remove_long(h, mmco[i].long_arg);
3469
                if(pic) unreference_pic(h, pic, 0);
3470

    
3471
                h->long_ref[ mmco[i].long_arg ]= remove_short(h, frame_num);
3472
                if (h->long_ref[ mmco[i].long_arg ]){
3473
                    h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3474
                    h->long_ref_count++;
3475
                }
3476
            }
3477
            break;
3478
        case MMCO_LONG2UNUSED:
3479
            j = pic_num_extract(h, mmco[i].long_arg, &structure);
3480
            pic = h->long_ref[j];
3481
            if (pic) {
3482
                if (unreference_pic(h, pic, structure ^ PICT_FRAME))
3483
                    remove_long_at_index(h, j);
3484
            } else if(s->avctx->debug&FF_DEBUG_MMCO)
3485
                av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3486
            break;
3487
        case MMCO_LONG:
3488
            unref_pic = 1;
3489
            if (FIELD_PICTURE && !s->first_field) {
3490
                if (h->long_ref[mmco[i].long_arg] == s->current_picture_ptr) {
3491
                    /* Just mark second field as referenced */
3492
                    unref_pic = 0;
3493
                } else if (s->current_picture_ptr->reference) {
3494
                    /* First field in pair is in short term list or
3495
                     * at a different long term index.
3496
                     * This is not allowed; see 7.4.3, notes 2 and 3.
3497
                     * Report the problem and keep the pair where it is,
3498
                     * and mark this field valid.
3499
                     */
3500
                    av_log(h->s.avctx, AV_LOG_ERROR,
3501
                        "illegal long term reference assignment for second "
3502
                        "field in complementary field pair (first field is "
3503
                        "short term or has non-matching long index)\n");
3504
                    unref_pic = 0;
3505
                }
3506
            }
3507

    
3508
            if (unref_pic) {
3509
                pic= remove_long(h, mmco[i].long_arg);
3510
                if(pic) unreference_pic(h, pic, 0);
3511

    
3512
                h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3513
                h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3514
                h->long_ref_count++;
3515
            }
3516

    
3517
            s->current_picture_ptr->reference |= s->picture_structure;
3518
            current_ref_assigned=1;
3519
            break;
3520
        case MMCO_SET_MAX_LONG:
3521
            assert(mmco[i].long_arg <= 16);
3522
            // just remove the long term which index is greater than new max
3523
            for(j = mmco[i].long_arg; j<16; j++){
3524
                pic = remove_long(h, j);
3525
                if (pic) unreference_pic(h, pic, 0);
3526
            }
3527
            break;
3528
        case MMCO_RESET:
3529
            while(h->short_ref_count){
3530
                pic= remove_short(h, h->short_ref[0]->frame_num);
3531
                if(pic) unreference_pic(h, pic, 0);
3532
            }
3533
            for(j = 0; j < 16; j++) {
3534
                pic= remove_long(h, j);
3535
                if(pic) unreference_pic(h, pic, 0);
3536
            }
3537
            break;
3538
        default: assert(0);
3539
        }
3540
    }
3541

    
3542
    if (!current_ref_assigned && FIELD_PICTURE &&
3543
            !s->first_field && s->current_picture_ptr->reference) {
3544

    
3545
        /* Second field of complementary field pair; the first field of
3546
         * which is already referenced. If short referenced, it
3547
         * should be first entry in short_ref. If not, it must exist
3548
         * in long_ref; trying to put it on the short list here is an
3549
         * error in the encoded bit stream (ref: 7.4.3, NOTE 2 and 3).
3550
         */
3551
        if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3552
            /* Just mark the second field valid */
3553
            s->current_picture_ptr->reference = PICT_FRAME;
3554
        } else if (s->current_picture_ptr->long_ref) {
3555
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3556
                                             "assignment for second field "
3557
                                             "in complementary field pair "
3558
                                             "(first field is long term)\n");
3559
        } else {
3560
            /*
3561
             * First field in reference, but not in any sensible place on our
3562
             * reference lists. This shouldn't happen unless reference
3563
             * handling somewhere else is wrong.
3564
             */
3565
            assert(0);
3566
        }
3567
        current_ref_assigned = 1;
3568
    }
3569

    
3570
    if(!current_ref_assigned){
3571
        pic= remove_short(h, s->current_picture_ptr->frame_num);
3572
        if(pic){
3573
            unreference_pic(h, pic, 0);
3574
            av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3575
        }
3576

    
3577
        if(h->short_ref_count)
3578
            memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3579

    
3580
        h->short_ref[0]= s->current_picture_ptr;
3581
        h->short_ref[0]->long_ref=0;
3582
        h->short_ref_count++;
3583
        s->current_picture_ptr->reference |= s->picture_structure;
3584
    }
3585

    
3586
    if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3587

    
3588
        /* We have too many reference frames, probably due to corrupted
3589
         * stream. Need to discard one frame. Prevents overrun of the
3590
         * short_ref and long_ref buffers.
3591
         */
3592
        av_log(h->s.avctx, AV_LOG_ERROR,
3593
               "number of reference frames exceeds max (probably "
3594
               "corrupt input), discarding one\n");
3595

    
3596
        if (h->long_ref_count) {
3597
            for (i = 0; i < 16; ++i)
3598
                if (h->long_ref[i])
3599
                    break;
3600

    
3601
            assert(i < 16);
3602
            pic = h->long_ref[i];
3603
            remove_long_at_index(h, i);
3604
        } else {
3605
            pic = h->short_ref[h->short_ref_count - 1];
3606
            remove_short_at_index(h, h->short_ref_count - 1);
3607
        }
3608
        unreference_pic(h, pic, 0);
3609
    }
3610

    
3611
    print_short_term(h);
3612
    print_long_term(h);
3613
    return 0;
3614
}
3615

    
3616
static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3617
    MpegEncContext * const s = &h->s;
3618
    int i;
3619

    
3620
    if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3621
        s->broken_link= get_bits1(gb) -1;
3622
        h->mmco[0].long_arg= get_bits1(gb) - 1; // current_long_term_idx
3623
        if(h->mmco[0].long_arg == -1)
3624
            h->mmco_index= 0;
3625
        else{
3626
            h->mmco[0].opcode= MMCO_LONG;
3627
            h->mmco_index= 1;
3628
        }
3629
    }else{
3630
        if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3631
            for(i= 0; i<MAX_MMCO_COUNT; i++) {
3632
                MMCOOpcode opcode= get_ue_golomb(gb);
3633

    
3634
                h->mmco[i].opcode= opcode;
3635
                if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3636
                    h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3637
/*                    if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3638
                        av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3639
                        return -1;
3640
                    }*/
3641
                }
3642
                if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3643
                    unsigned int long_arg= get_ue_golomb(gb);
3644
                    if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3645
                        av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3646
                        return -1;
3647
                    }
3648
                    h->mmco[i].long_arg= long_arg;
3649
                }
3650

    
3651
                if(opcode > (unsigned)MMCO_LONG){
3652
                    av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3653
                    return -1;
3654
                }
3655
                if(opcode == MMCO_END)
3656
                    break;
3657
            }
3658
            h->mmco_index= i;
3659
        }else{
3660
            assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3661

    
3662
            if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3663
                    !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3664
                h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3665
                h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3666
                h->mmco_index= 1;
3667
                if (FIELD_PICTURE) {
3668
                    h->mmco[0].short_pic_num *= 2;
3669
                    h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3670
                    h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3671
                    h->mmco_index= 2;
3672
                }
3673
            }else
3674
                h->mmco_index= 0;
3675
        }
3676
    }
3677

    
3678
    return 0;
3679
}
3680

    
3681
static int init_poc(H264Context *h){
3682
    MpegEncContext * const s = &h->s;
3683
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3684
    int field_poc[2];
3685

    
3686
    if(h->nal_unit_type == NAL_IDR_SLICE){
3687
        h->frame_num_offset= 0;
3688
    }else{
3689
        if(h->frame_num < h->prev_frame_num)
3690
            h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
3691
        else
3692
            h->frame_num_offset= h->prev_frame_num_offset;
3693
    }
3694

    
3695
    if(h->sps.poc_type==0){
3696
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3697

    
3698
        if(h->nal_unit_type == NAL_IDR_SLICE){
3699
             h->prev_poc_msb=
3700
             h->prev_poc_lsb= 0;
3701
        }
3702

    
3703
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3704
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3705
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3706
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3707
        else
3708
            h->poc_msb = h->prev_poc_msb;
3709
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3710
        field_poc[0] =
3711
        field_poc[1] = h->poc_msb + h->poc_lsb;
3712
        if(s->picture_structure == PICT_FRAME)
3713
            field_poc[1] += h->delta_poc_bottom;
3714
    }else if(h->sps.poc_type==1){
3715
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3716
        int i;
3717

    
3718
        if(h->sps.poc_cycle_length != 0)
3719
            abs_frame_num = h->frame_num_offset + h->frame_num;
3720
        else
3721
            abs_frame_num = 0;
3722

    
3723
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
3724
            abs_frame_num--;
3725

    
3726
        expected_delta_per_poc_cycle = 0;
3727
        for(i=0; i < h->sps.poc_cycle_length; i++)
3728
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3729

    
3730
        if(abs_frame_num > 0){
3731
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3732
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3733

    
3734
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3735
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
3736
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3737
        } else
3738
            expectedpoc = 0;
3739

    
3740
        if(h->nal_ref_idc == 0)
3741
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3742

    
3743
        field_poc[0] = expectedpoc + h->delta_poc[0];
3744
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3745

    
3746
        if(s->picture_structure == PICT_FRAME)
3747
            field_poc[1] += h->delta_poc[1];
3748
    }else{
3749
        int poc;
3750
        if(h->nal_unit_type == NAL_IDR_SLICE){
3751
            poc= 0;
3752
        }else{
3753
            if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
3754
            else               poc= 2*(h->frame_num_offset + h->frame_num) - 1;
3755
        }
3756
        field_poc[0]= poc;
3757
        field_poc[1]= poc;
3758
    }
3759

    
3760
    if(s->picture_structure != PICT_BOTTOM_FIELD) {
3761
        s->current_picture_ptr->field_poc[0]= field_poc[0];
3762
        s->current_picture_ptr->poc = field_poc[0];
3763
    }
3764
    if(s->picture_structure != PICT_TOP_FIELD) {
3765
        s->current_picture_ptr->field_poc[1]= field_poc[1];
3766
        s->current_picture_ptr->poc = field_poc[1];
3767
    }
3768
    if(!FIELD_PICTURE || !s->first_field) {
3769
        Picture *cur = s->current_picture_ptr;
3770
        cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3771
    }
3772

    
3773
    return 0;
3774
}
3775

    
3776

    
3777
/**
3778
 * initialize scan tables
3779
 */
3780
static void init_scan_tables(H264Context *h){
3781
    MpegEncContext * const s = &h->s;
3782
    int i;
3783
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3784
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3785
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
3786
    }else{
3787
        for(i=0; i<16; i++){
3788
#define T(x) (x>>2) | ((x<<2) & 0xF)
3789
            h->zigzag_scan[i] = T(zigzag_scan[i]);
3790
            h-> field_scan[i] = T( field_scan[i]);
3791
#undef T
3792
        }
3793
    }
3794
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3795
        memcpy(h->zigzag_scan8x8,       zigzag_scan8x8,       64*sizeof(uint8_t));
3796
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3797
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
3798
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
3799
    }else{
3800
        for(i=0; i<64; i++){
3801
#define T(x) (x>>3) | ((x&7)<<3)
3802
            h->zigzag_scan8x8[i]       = T(zigzag_scan8x8[i]);
3803
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3804
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
3805
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
3806
#undef T
3807
        }
3808
    }
3809
    if(h->sps.transform_bypass){ //FIXME same ugly
3810
        h->zigzag_scan_q0          = zigzag_scan;
3811
        h->zigzag_scan8x8_q0       = zigzag_scan8x8;
3812
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3813
        h->field_scan_q0           = field_scan;
3814
        h->field_scan8x8_q0        = field_scan8x8;
3815
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
3816
    }else{
3817
        h->zigzag_scan_q0          = h->zigzag_scan;
3818
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
3819
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3820
        h->field_scan_q0           = h->field_scan;
3821
        h->field_scan8x8_q0        = h->field_scan8x8;
3822
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
3823
    }
3824
}
3825

    
3826
/**
3827
 * Replicates H264 "master" context to thread contexts.
3828
 */
3829
static void clone_slice(H264Context *dst, H264Context *src)
3830
{
3831
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
3832
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
3833
    dst->s.current_picture      = src->s.current_picture;
3834
    dst->s.linesize             = src->s.linesize;
3835
    dst->s.uvlinesize           = src->s.uvlinesize;
3836
    dst->s.first_field          = src->s.first_field;
3837

    
3838
    dst->prev_poc_msb           = src->prev_poc_msb;
3839
    dst->prev_poc_lsb           = src->prev_poc_lsb;
3840
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
3841
    dst->prev_frame_num         = src->prev_frame_num;
3842
    dst->short_ref_count        = src->short_ref_count;
3843

    
3844
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
3845
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
3846
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3847
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
3848

    
3849
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
3850
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
3851
}
3852

    
3853
/**
3854
 * decodes a slice header.
3855
 * this will allso call MPV_common_init() and frame_start() as needed
3856
 *
3857
 * @param h h264context
3858
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3859
 *
3860
 * @return 0 if okay, <0 if an error occured, 1 if decoding must not be multithreaded
3861
 */
3862
static int decode_slice_header(H264Context *h, H264Context *h0){
3863
    MpegEncContext * const s = &h->s;
3864
    MpegEncContext * const s0 = &h0->s;
3865
    unsigned int first_mb_in_slice;
3866
    unsigned int pps_id;
3867
    int num_ref_idx_active_override_flag;
3868
    static const uint8_t slice_type_map[5]= {FF_P_TYPE, FF_B_TYPE, FF_I_TYPE, FF_SP_TYPE, FF_SI_TYPE};
3869
    unsigned int slice_type, tmp, i;
3870
    int default_ref_list_done = 0;
3871
    int last_pic_structure;
3872

    
3873
    s->dropable= h->nal_ref_idc == 0;
3874

    
3875
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3876
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3877
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3878
    }else{
3879
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3880
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3881
    }
3882

    
3883
    first_mb_in_slice= get_ue_golomb(&s->gb);
3884

    
3885
    if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3886
        h0->current_slice = 0;
3887
        if (!s0->first_field)
3888
            s->current_picture_ptr= NULL;
3889
    }
3890

    
3891
    slice_type= get_ue_golomb(&s->gb);
3892
    if(slice_type > 9){
3893
        av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
3894
        return -1;
3895
    }
3896
    if(slice_type > 4){
3897
        slice_type -= 5;
3898
        h->slice_type_fixed=1;
3899
    }else
3900
        h->slice_type_fixed=0;
3901

    
3902
    slice_type= slice_type_map[ slice_type ];
3903
    if (slice_type == FF_I_TYPE
3904
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3905
        default_ref_list_done = 1;
3906
    }
3907
    h->slice_type= slice_type;
3908

    
3909
    s->pict_type= h->slice_type; // to make a few old func happy, it's wrong though
3910
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3911
        av_log(h->s.avctx, AV_LOG_ERROR,
3912
               "B picture before any references, skipping\n");
3913
        return -1;
3914
    }
3915

    
3916
    pps_id= get_ue_golomb(&s->gb);
3917
    if(pps_id>=MAX_PPS_COUNT){
3918
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3919
        return -1;
3920
    }
3921
    if(!h0->pps_buffers[pps_id]) {
3922
        av_log(h->s.avctx, AV_LOG_ERROR, "non existing PPS referenced\n");
3923
        return -1;
3924
    }
3925
    h->pps= *h0->pps_buffers[pps_id];
3926

    
3927
    if(!h0->sps_buffers[h->pps.sps_id]) {
3928
        av_log(h->s.avctx, AV_LOG_ERROR, "non existing SPS referenced\n");
3929
        return -1;
3930
    }
3931
    h->sps = *h0->sps_buffers[h->pps.sps_id];
3932

    
3933
    if(h == h0 && h->dequant_coeff_pps != pps_id){
3934
        h->dequant_coeff_pps = pps_id;
3935
        init_dequant_tables(h);
3936
    }
3937

    
3938
    s->mb_width= h->sps.mb_width;
3939
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3940

    
3941
    h->b_stride=  s->mb_width*4;
3942
    h->b8_stride= s->mb_width*2;
3943

    
3944
    s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right );
3945
    if(h->sps.frame_mbs_only_flag)
3946
        s->height= 16*s->mb_height - 2*(h->sps.crop_top  + h->sps.crop_bottom);
3947
    else
3948
        s->height= 16*s->mb_height - 4*(h->sps.crop_top  + h->sps.crop_bottom); //FIXME recheck
3949

    
3950
    if (s->context_initialized
3951
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
3952
        if(h != h0)
3953
            return -1;   // width / height changed during parallelized decoding
3954
        free_tables(h);
3955
        MPV_common_end(s);
3956
    }
3957
    if (!s->context_initialized) {
3958
        if(h != h0)
3959
            return -1;  // we cant (re-)initialize context during parallel decoding
3960
        if (MPV_common_init(s) < 0)
3961
            return -1;
3962
        s->first_field = 0;
3963

    
3964
        init_scan_tables(h);
3965
        alloc_tables(h);
3966

    
3967
        for(i = 1; i < s->avctx->thread_count; i++) {
3968
            H264Context *c;
3969
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3970
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3971
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3972
            c->sps = h->sps;
3973
            c->pps = h->pps;
3974
            init_scan_tables(c);
3975
            clone_tables(c, h);
3976
        }
3977

    
3978
        for(i = 0; i < s->avctx->thread_count; i++)
3979
            if(context_init(h->thread_context[i]) < 0)
3980
                return -1;
3981

    
3982
        s->avctx->width = s->width;
3983
        s->avctx->height = s->height;
3984
        s->avctx->sample_aspect_ratio= h->sps.sar;
3985
        if(!s->avctx->sample_aspect_ratio.den)
3986
            s->avctx->sample_aspect_ratio.den = 1;
3987

    
3988
        if(h->sps.timing_info_present_flag){
3989
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3990
            if(h->x264_build > 0 && h->x264_build < 44)
3991
                s->avctx->time_base.den *= 2;
3992
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3993
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3994
        }
3995
    }
3996

    
3997
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3998

    
3999
    h->mb_mbaff = 0;
4000
    h->mb_aff_frame = 0;
4001
    last_pic_structure = s0->picture_structure;
4002
    if(h->sps.frame_mbs_only_flag){
4003
        s->picture_structure= PICT_FRAME;
4004
    }else{
4005
        if(get_bits1(&s->gb)) { //field_pic_flag
4006
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
4007
        } else {
4008
            s->picture_structure= PICT_FRAME;
4009
            h->mb_aff_frame = h->sps.mb_aff;
4010
        }
4011
    }
4012

    
4013
    if(h0->current_slice == 0){
4014
        /* See if we have a decoded first field looking for a pair... */
4015
        if (s0->first_field) {
4016
            assert(s0->current_picture_ptr);
4017
            assert(s0->current_picture_ptr->data[0]);
4018
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
4019

    
4020
            /* figure out if we have a complementary field pair */
4021
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
4022
                /*
4023
                 * Previous field is unmatched. Don't display it, but let it
4024
                 * remain for reference if marked as such.
4025
                 */
4026
                s0->current_picture_ptr = NULL;
4027
                s0->first_field = FIELD_PICTURE;
4028

    
4029
            } else {
4030
                if (h->nal_ref_idc &&
4031
                        s0->current_picture_ptr->reference &&
4032
                        s0->current_picture_ptr->frame_num != h->frame_num) {
4033
                    /*
4034
                     * This and previous field were reference, but had
4035
                     * different frame_nums. Consider this field first in
4036
                     * pair. Throw away previous field except for reference
4037
                     * purposes.
4038
                     */
4039
                    s0->first_field = 1;
4040
                    s0->current_picture_ptr = NULL;
4041

    
4042
                } else {
4043
                    /* Second field in complementary pair */
4044
                    s0->first_field = 0;
4045
                }
4046
            }
4047

    
4048
        } else {
4049
            /* Frame or first field in a potentially complementary pair */
4050
            assert(!s0->current_picture_ptr);
4051
            s0->first_field = FIELD_PICTURE;
4052
        }
4053

    
4054
        if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
4055
            s0->first_field = 0;
4056
            return -1;
4057
        }
4058
    }
4059
    if(h != h0)
4060
        clone_slice(h, h0);
4061

    
4062
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
4063

    
4064
    assert(s->mb_num == s->mb_width * s->mb_height);
4065
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
4066
       first_mb_in_slice                    >= s->mb_num){
4067
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
4068
        return -1;
4069
    }
4070
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
4071
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
4072
    if (s->picture_structure == PICT_BOTTOM_FIELD)
4073
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
4074
    assert(s->mb_y < s->mb_height);
4075

    
4076
    if(s->picture_structure==PICT_FRAME){
4077
        h->curr_pic_num=   h->frame_num;
4078
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
4079
    }else{
4080
        h->curr_pic_num= 2*h->frame_num + 1;
4081
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
4082
    }
4083

    
4084
    if(h->nal_unit_type == NAL_IDR_SLICE){
4085
        get_ue_golomb(&s->gb); /* idr_pic_id */
4086
    }
4087

    
4088
    if(h->sps.poc_type==0){
4089
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
4090

    
4091
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
4092
            h->delta_poc_bottom= get_se_golomb(&s->gb);
4093
        }
4094
    }
4095

    
4096
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
4097
        h->delta_poc[0]= get_se_golomb(&s->gb);
4098

    
4099
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
4100
            h->delta_poc[1]= get_se_golomb(&s->gb);
4101
    }
4102

    
4103
    init_poc(h);
4104

    
4105
    if(h->pps.redundant_pic_cnt_present){
4106
        h->redundant_pic_count= get_ue_golomb(&s->gb);
4107
    }
4108

    
4109
    //set defaults, might be overriden a few line later
4110
    h->ref_count[0]= h->pps.ref_count[0];
4111
    h->ref_count[1]= h->pps.ref_count[1];
4112

    
4113
    if(h->slice_type == FF_P_TYPE || h->slice_type == FF_SP_TYPE || h->slice_type == FF_B_TYPE){
4114
        if(h->slice_type == FF_B_TYPE){
4115
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
4116
        }
4117
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
4118

    
4119
        if(num_ref_idx_active_override_flag){
4120
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
4121
            if(h->slice_type==FF_B_TYPE)
4122
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
4123

    
4124
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
4125
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
4126
                h->ref_count[0]= h->ref_count[1]= 1;
4127
                return -1;
4128
            }
4129
        }
4130
        if(h->slice_type == FF_B_TYPE)
4131
            h->list_count= 2;
4132
        else
4133
            h->list_count= 1;
4134
    }else
4135
        h->list_count= 0;
4136

    
4137
    if(!default_ref_list_done){
4138
        fill_default_ref_list(h);
4139
    }
4140

    
4141
    if(decode_ref_pic_list_reordering(h) < 0)
4142
        return -1;
4143

    
4144
    if(   (h->pps.weighted_pred          && (h->slice_type == FF_P_TYPE || h->slice_type == FF_SP_TYPE ))
4145
       || (h->pps.weighted_bipred_idc==1 && h->slice_type==FF_B_TYPE ) )
4146
        pred_weight_table(h);
4147
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type==FF_B_TYPE)
4148
        implicit_weight_table(h);
4149
    else
4150
        h->use_weight = 0;
4151

    
4152
    if(h->nal_ref_idc)
4153
        decode_ref_pic_marking(h0, &s->gb);
4154

    
4155
    if(FRAME_MBAFF)
4156
        fill_mbaff_ref_list(h);
4157

    
4158
    if( h->slice_type != FF_I_TYPE && h->slice_type != FF_SI_TYPE && h->pps.cabac ){
4159
        tmp = get_ue_golomb(&s->gb);
4160
        if(tmp > 2){
4161
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
4162
            return -1;
4163
        }
4164
        h->cabac_init_idc= tmp;
4165
    }
4166

    
4167
    h->last_qscale_diff = 0;
4168
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
4169
    if(tmp>51){
4170
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
4171
        return -1;
4172
    }
4173
    s->qscale= tmp;
4174
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
4175
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
4176
    //FIXME qscale / qp ... stuff
4177
    if(h->slice_type == FF_SP_TYPE){
4178
        get_bits1(&s->gb); /* sp_for_switch_flag */
4179
    }
4180
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
4181
        get_se_golomb(&s->gb); /* slice_qs_delta */
4182
    }
4183

    
4184
    h->deblocking_filter = 1;
4185
    h->slice_alpha_c0_offset = 0;
4186
    h->slice_beta_offset = 0;
4187
    if( h->pps.deblocking_filter_parameters_present ) {
4188
        tmp= get_ue_golomb(&s->gb);
4189
        if(tmp > 2){
4190
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
4191
            return -1;
4192
        }
4193
        h->deblocking_filter= tmp;
4194
        if(h->deblocking_filter < 2)
4195
            h->deblocking_filter^= 1; // 1<->0
4196

    
4197
        if( h->deblocking_filter ) {
4198
            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
4199
            h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
4200
        }
4201
    }
4202

    
4203
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
4204
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type != FF_I_TYPE)
4205
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type == FF_B_TYPE)
4206
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
4207
        h->deblocking_filter= 0;
4208

    
4209
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4210
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
4211
            /* Cheat slightly for speed:
4212
               Do not bother to deblock across slices. */
4213
            h->deblocking_filter = 2;
4214
        } else {
4215
            h0->max_contexts = 1;
4216
            if(!h0->single_decode_warning) {
4217
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
4218
                h0->single_decode_warning = 1;
4219
            }
4220
            if(h != h0)
4221
                return 1; // deblocking switched inside frame
4222
        }
4223
    }
4224

    
4225
#if 0 //FMO
4226
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
4227
        slice_group_change_cycle= get_bits(&s->gb, ?);
4228
#endif
4229

    
4230
    h0->last_slice_type = slice_type;
4231
    h->slice_num = ++h0->current_slice;
4232

    
4233
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4234
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
4235

    
4236
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4237
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s\n",
4238
               h->slice_num,
4239
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4240
               first_mb_in_slice,
4241
               av_get_pict_type_char(h->slice_type),
4242
               pps_id, h->frame_num,
4243
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4244
               h->ref_count[0], h->ref_count[1],
4245
               s->qscale,
4246
               h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4247
               h->use_weight,
4248
               h->use_weight==1 && h->use_weight_chroma ? "c" : ""
4249
               );
4250
    }
4251

    
4252
    return 0;
4253
}
4254

    
4255
/**
4256
 *
4257
 */
4258
static inline int get_level_prefix(GetBitContext *gb){
4259
    unsigned int buf;
4260
    int log;
4261

    
4262
    OPEN_READER(re, gb);
4263
    UPDATE_CACHE(re, gb);
4264
    buf=GET_CACHE(re, gb);
4265

    
4266
    log= 32 - av_log2(buf);
4267
#ifdef TRACE
4268
    print_bin(buf>>(32-log), log);
4269
    av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
4270
#endif
4271

    
4272
    LAST_SKIP_BITS(re, gb, log);
4273
    CLOSE_READER(re, gb);
4274

    
4275
    return log-1;
4276
}
4277

    
4278
static inline int get_dct8x8_allowed(H264Context *h){
4279
    int i;
4280
    for(i=0; i<4; i++){
4281
        if(!IS_SUB_8X8(h->sub_mb_type[i])
4282
           || (!h->sps.direct_8x8_inference_flag && IS_DIRECT(h->sub_mb_type[i])))
4283
            return 0;
4284
    }
4285
    return 1;
4286
}
4287

    
4288
/**
4289
 * decodes a residual block.
4290
 * @param n block index
4291
 * @param scantable scantable
4292
 * @param max_coeff number of coefficients in the block
4293
 * @return <0 if an error occured
4294
 */
4295
static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4296
    MpegEncContext * const s = &h->s;
4297
    static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
4298
    int level[16];
4299
    int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4300

    
4301
    //FIXME put trailing_onex into the context
4302

    
4303
    if(n == CHROMA_DC_BLOCK_INDEX){
4304
        coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4305
        total_coeff= coeff_token>>2;
4306
    }else{
4307
        if(n == LUMA_DC_BLOCK_INDEX){
4308
            total_coeff= pred_non_zero_count(h, 0);
4309
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4310
            total_coeff= coeff_token>>2;
4311
        }else{
4312
            total_coeff= pred_non_zero_count(h, n);
4313
            coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4314
            total_coeff= coeff_token>>2;
4315
            h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4316
        }
4317
    }
4318

    
4319
    //FIXME set last_non_zero?
4320

    
4321
    if(total_coeff==0)
4322
        return 0;
4323
    if(total_coeff > (unsigned)max_coeff) {
4324
        av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4325
        return -1;
4326
    }
4327

    
4328
    trailing_ones= coeff_token&3;
4329
    tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4330
    assert(total_coeff<=16);
4331

    
4332
    for(i=0; i<trailing_ones; i++){
4333
        level[i]= 1 - 2*get_bits1(gb);
4334
    }
4335

    
4336
    if(i<total_coeff) {
4337
        int level_code, mask;
4338
        int suffix_length = total_coeff > 10 && trailing_ones < 3;
4339
        int prefix= get_level_prefix(gb);
4340

    
4341
        //first coefficient has suffix_length equal to 0 or 1
4342
        if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4343
            if(suffix_length)
4344
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4345
            else
4346
                level_code= (prefix<<suffix_length); //part
4347
        }else if(prefix==14){
4348
            if(suffix_length)
4349
                level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4350
            else
4351
                level_code= prefix + get_bits(gb, 4); //part
4352
        }else if(prefix==15){
4353
            level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
4354
            if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
4355
        }else{
4356
            av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
4357
            return -1;
4358
        }
4359

    
4360
        if(trailing_ones < 3) level_code += 2;
4361

    
4362
        suffix_length = 1;
4363
        if(level_code > 5)
4364
            suffix_length++;
4365
        mask= -(level_code&1);
4366
        level[i]= (((2+level_code)>>1) ^ mask) - mask;
4367
        i++;
4368

    
4369
        //remaining coefficients have suffix_length > 0
4370
        for(;i<total_coeff;i++) {
4371
            static const int suffix_limit[7] = {0,5,11,23,47,95,INT_MAX };
4372
            prefix = get_level_prefix(gb);
4373
            if(prefix<15){
4374
                level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4375
            }else if(prefix==15){
4376
                level_code =  (prefix<<suffix_length) + get_bits(gb, 12);
4377
            }else{
4378
                av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
4379
                return -1;
4380
            }
4381
            mask= -(level_code&1);
4382
            level[i]= (((2+level_code)>>1) ^ mask) - mask;
4383
            if(level_code > suffix_limit[suffix_length])
4384
                suffix_length++;
4385
        }
4386
    }
4387

    
4388
    if(total_coeff == max_coeff)
4389
        zeros_left=0;
4390
    else{
4391
        if(n == CHROMA_DC_BLOCK_INDEX)
4392
            zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4393
        else
4394
            zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4395
    }
4396

    
4397
    coeff_num = zeros_left + total_coeff - 1;
4398
    j = scantable[coeff_num];
4399
    if(n > 24){
4400
        block[j] = level[0];
4401
        for(i=1;i<total_coeff;i++) {
4402
            if(zeros_left <= 0)
4403
                run_before = 0;
4404
            else if(zeros_left < 7){
4405
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4406
            }else{
4407
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4408
            }
4409
            zeros_left -= run_before;
4410
            coeff_num -= 1 + run_before;
4411
            j= scantable[ coeff_num ];
4412

    
4413
            block[j]= level[i];
4414
        }
4415
    }else{
4416
        block[j] = (level[0] * qmul[j] + 32)>>6;
4417
        for(i=1;i<total_coeff;i++) {
4418
            if(zeros_left <= 0)
4419
                run_before = 0;
4420
            else if(zeros_left < 7){
4421
                run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4422
            }else{
4423
                run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4424
            }
4425
            zeros_left -= run_before;
4426
            coeff_num -= 1 + run_before;
4427
            j= scantable[ coeff_num ];
4428

    
4429
            block[j]= (level[i] * qmul[j] + 32)>>6;
4430
        }
4431
    }
4432

    
4433
    if(zeros_left<0){
4434
        av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4435
        return -1;
4436
    }
4437

    
4438
    return 0;
4439
}
4440

    
4441
static void predict_field_decoding_flag(H264Context *h){
4442
    MpegEncContext * const s = &h->s;
4443
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
4444
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4445
                ? s->current_picture.mb_type[mb_xy-1]
4446
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4447
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4448
                : 0;
4449
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4450
}
4451

    
4452
/**
4453
 * decodes a P_SKIP or B_SKIP macroblock
4454
 */
4455
static void decode_mb_skip(H264Context *h){
4456
    MpegEncContext * const s = &h->s;
4457
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;