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1
/*
2
 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3
 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * 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
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * 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
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21

    
22
/**
23
 * @file libavcodec/h264.c
24
 * H.264 / AVC / MPEG4 part10 codec.
25
 * @author Michael Niedermayer <michaelni@gmx.at>
26
 */
27

    
28
#include "internal.h"
29
#include "dsputil.h"
30
#include "avcodec.h"
31
#include "mpegvideo.h"
32
#include "h264.h"
33
#include "h264data.h"
34
#include "h264_mvpred.h"
35
#include "h264_parser.h"
36
#include "golomb.h"
37
#include "mathops.h"
38
#include "rectangle.h"
39
#include "vdpau_internal.h"
40

    
41
#include "cabac.h"
42

    
43
//#undef NDEBUG
44
#include <assert.h>
45

    
46
static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
47
static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
48

    
49
static const uint8_t rem6[52]={
50
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,
51
};
52

    
53
static const uint8_t div6[52]={
54
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,
55
};
56

    
57
void ff_h264_write_back_intra_pred_mode(H264Context *h){
58
    const int mb_xy= h->mb_xy;
59

    
60
    h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
61
    h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
62
    h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
63
    h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
64
    h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
65
    h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
66
    h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
67
}
68

    
69
/**
70
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
71
 */
72
int ff_h264_check_intra4x4_pred_mode(H264Context *h){
73
    MpegEncContext * const s = &h->s;
74
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
75
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
76
    int i;
77

    
78
    if(!(h->top_samples_available&0x8000)){
79
        for(i=0; i<4; i++){
80
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
81
            if(status<0){
82
                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);
83
                return -1;
84
            } else if(status){
85
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
86
            }
87
        }
88
    }
89

    
90
    if((h->left_samples_available&0x8888)!=0x8888){
91
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
92
        for(i=0; i<4; i++){
93
            if(!(h->left_samples_available&mask[i])){
94
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
95
                if(status<0){
96
                    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);
97
                    return -1;
98
                } else if(status){
99
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
100
                }
101
            }
102
        }
103
    }
104

    
105
    return 0;
106
} //FIXME cleanup like ff_h264_check_intra_pred_mode
107

    
108
/**
109
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
110
 */
111
int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
112
    MpegEncContext * const s = &h->s;
113
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
114
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
115

    
116
    if(mode > 6U) {
117
        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);
118
        return -1;
119
    }
120

    
121
    if(!(h->top_samples_available&0x8000)){
122
        mode= top[ mode ];
123
        if(mode<0){
124
            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);
125
            return -1;
126
        }
127
    }
128

    
129
    if((h->left_samples_available&0x8080) != 0x8080){
130
        mode= left[ mode ];
131
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
132
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
133
        }
134
        if(mode<0){
135
            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);
136
            return -1;
137
        }
138
    }
139

    
140
    return mode;
141
}
142

    
143
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
144
    int i, si, di;
145
    uint8_t *dst;
146
    int bufidx;
147

    
148
//    src[0]&0x80;                //forbidden bit
149
    h->nal_ref_idc= src[0]>>5;
150
    h->nal_unit_type= src[0]&0x1F;
151

    
152
    src++; length--;
153
#if 0
154
    for(i=0; i<length; i++)
155
        printf("%2X ", src[i]);
156
#endif
157

    
158
#if HAVE_FAST_UNALIGNED
159
# if HAVE_FAST_64BIT
160
#   define RS 7
161
    for(i=0; i+1<length; i+=9){
162
        if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
163
# else
164
#   define RS 3
165
    for(i=0; i+1<length; i+=5){
166
        if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
167
# endif
168
            continue;
169
        if(i>0 && !src[i]) i--;
170
        while(src[i]) i++;
171
#else
172
#   define RS 0
173
    for(i=0; i+1<length; i+=2){
174
        if(src[i]) continue;
175
        if(i>0 && src[i-1]==0) i--;
176
#endif
177
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
178
            if(src[i+2]!=3){
179
                /* startcode, so we must be past the end */
180
                length=i;
181
            }
182
            break;
183
        }
184
        i-= RS;
185
    }
186

    
187
    if(i>=length-1){ //no escaped 0
188
        *dst_length= length;
189
        *consumed= length+1; //+1 for the header
190
        return src;
191
    }
192

    
193
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
194
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
195
    dst= h->rbsp_buffer[bufidx];
196

    
197
    if (dst == NULL){
198
        return NULL;
199
    }
200

    
201
//printf("decoding esc\n");
202
    memcpy(dst, src, i);
203
    si=di=i;
204
    while(si+2<length){
205
        //remove escapes (very rare 1:2^22)
206
        if(src[si+2]>3){
207
            dst[di++]= src[si++];
208
            dst[di++]= src[si++];
209
        }else if(src[si]==0 && src[si+1]==0){
210
            if(src[si+2]==3){ //escape
211
                dst[di++]= 0;
212
                dst[di++]= 0;
213
                si+=3;
214
                continue;
215
            }else //next start code
216
                goto nsc;
217
        }
218

    
219
        dst[di++]= src[si++];
220
    }
221
    while(si<length)
222
        dst[di++]= src[si++];
223
nsc:
224

    
225
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
226

    
227
    *dst_length= di;
228
    *consumed= si + 1;//+1 for the header
229
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
230
    return dst;
231
}
232

    
233
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
234
    int v= *src;
235
    int r;
236

    
237
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
238

    
239
    for(r=1; r<9; r++){
240
        if(v&1) return r;
241
        v>>=1;
242
    }
243
    return 0;
244
}
245

    
246
/**
247
 * IDCT transforms the 16 dc values and dequantizes them.
248
 * @param qp quantization parameter
249
 */
250
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
251
#define stride 16
252
    int i;
253
    int temp[16]; //FIXME check if this is a good idea
254
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
255
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
256

    
257
//memset(block, 64, 2*256);
258
//return;
259
    for(i=0; i<4; i++){
260
        const int offset= y_offset[i];
261
        const int z0= block[offset+stride*0] + block[offset+stride*4];
262
        const int z1= block[offset+stride*0] - block[offset+stride*4];
263
        const int z2= block[offset+stride*1] - block[offset+stride*5];
264
        const int z3= block[offset+stride*1] + block[offset+stride*5];
265

    
266
        temp[4*i+0]= z0+z3;
267
        temp[4*i+1]= z1+z2;
268
        temp[4*i+2]= z1-z2;
269
        temp[4*i+3]= z0-z3;
270
    }
271

    
272
    for(i=0; i<4; i++){
273
        const int offset= x_offset[i];
274
        const int z0= temp[4*0+i] + temp[4*2+i];
275
        const int z1= temp[4*0+i] - temp[4*2+i];
276
        const int z2= temp[4*1+i] - temp[4*3+i];
277
        const int z3= temp[4*1+i] + temp[4*3+i];
278

    
279
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
280
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
281
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
282
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
283
    }
284
}
285

    
286
#if 0
287
/**
288
 * DCT transforms the 16 dc values.
289
 * @param qp quantization parameter ??? FIXME
290
 */
291
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
292
//    const int qmul= dequant_coeff[qp][0];
293
    int i;
294
    int temp[16]; //FIXME check if this is a good idea
295
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
296
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
297

298
    for(i=0; i<4; i++){
299
        const int offset= y_offset[i];
300
        const int z0= block[offset+stride*0] + block[offset+stride*4];
301
        const int z1= block[offset+stride*0] - block[offset+stride*4];
302
        const int z2= block[offset+stride*1] - block[offset+stride*5];
303
        const int z3= block[offset+stride*1] + block[offset+stride*5];
304

305
        temp[4*i+0]= z0+z3;
306
        temp[4*i+1]= z1+z2;
307
        temp[4*i+2]= z1-z2;
308
        temp[4*i+3]= z0-z3;
309
    }
310

311
    for(i=0; i<4; i++){
312
        const int offset= x_offset[i];
313
        const int z0= temp[4*0+i] + temp[4*2+i];
314
        const int z1= temp[4*0+i] - temp[4*2+i];
315
        const int z2= temp[4*1+i] - temp[4*3+i];
316
        const int z3= temp[4*1+i] + temp[4*3+i];
317

318
        block[stride*0 +offset]= (z0 + z3)>>1;
319
        block[stride*2 +offset]= (z1 + z2)>>1;
320
        block[stride*8 +offset]= (z1 - z2)>>1;
321
        block[stride*10+offset]= (z0 - z3)>>1;
322
    }
323
}
324
#endif
325

    
326
#undef xStride
327
#undef stride
328

    
329
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
330
    const int stride= 16*2;
331
    const int xStride= 16;
332
    int a,b,c,d,e;
333

    
334
    a= block[stride*0 + xStride*0];
335
    b= block[stride*0 + xStride*1];
336
    c= block[stride*1 + xStride*0];
337
    d= block[stride*1 + xStride*1];
338

    
339
    e= a-b;
340
    a= a+b;
341
    b= c-d;
342
    c= c+d;
343

    
344
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
345
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
346
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
347
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
348
}
349

    
350
#if 0
351
static void chroma_dc_dct_c(DCTELEM *block){
352
    const int stride= 16*2;
353
    const int xStride= 16;
354
    int a,b,c,d,e;
355

356
    a= block[stride*0 + xStride*0];
357
    b= block[stride*0 + xStride*1];
358
    c= block[stride*1 + xStride*0];
359
    d= block[stride*1 + xStride*1];
360

361
    e= a-b;
362
    a= a+b;
363
    b= c-d;
364
    c= c+d;
365

366
    block[stride*0 + xStride*0]= (a+c);
367
    block[stride*0 + xStride*1]= (e+b);
368
    block[stride*1 + xStride*0]= (a-c);
369
    block[stride*1 + xStride*1]= (e-b);
370
}
371
#endif
372

    
373
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
374
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
375
                           int src_x_offset, int src_y_offset,
376
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
377
    MpegEncContext * const s = &h->s;
378
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
379
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
380
    const int luma_xy= (mx&3) + ((my&3)<<2);
381
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
382
    uint8_t * src_cb, * src_cr;
383
    int extra_width= h->emu_edge_width;
384
    int extra_height= h->emu_edge_height;
385
    int emu=0;
386
    const int full_mx= mx>>2;
387
    const int full_my= my>>2;
388
    const int pic_width  = 16*s->mb_width;
389
    const int pic_height = 16*s->mb_height >> MB_FIELD;
390

    
391
    if(mx&7) extra_width -= 3;
392
    if(my&7) extra_height -= 3;
393

    
394
    if(   full_mx < 0-extra_width
395
       || full_my < 0-extra_height
396
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
397
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
398
        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);
399
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
400
        emu=1;
401
    }
402

    
403
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
404
    if(!square){
405
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
406
    }
407

    
408
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
409

    
410
    if(MB_FIELD){
411
        // chroma offset when predicting from a field of opposite parity
412
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
413
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
414
    }
415
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
416
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
417

    
418
    if(emu){
419
        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);
420
            src_cb= s->edge_emu_buffer;
421
    }
422
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
423

    
424
    if(emu){
425
        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);
426
            src_cr= s->edge_emu_buffer;
427
    }
428
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
429
}
430

    
431
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
432
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
433
                           int x_offset, int y_offset,
434
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
435
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
436
                           int list0, int list1){
437
    MpegEncContext * const s = &h->s;
438
    qpel_mc_func *qpix_op=  qpix_put;
439
    h264_chroma_mc_func chroma_op= chroma_put;
440

    
441
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
442
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
443
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
444
    x_offset += 8*s->mb_x;
445
    y_offset += 8*(s->mb_y >> MB_FIELD);
446

    
447
    if(list0){
448
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
449
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
450
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
451
                           qpix_op, chroma_op);
452

    
453
        qpix_op=  qpix_avg;
454
        chroma_op= chroma_avg;
455
    }
456

    
457
    if(list1){
458
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
459
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
460
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
461
                           qpix_op, chroma_op);
462
    }
463
}
464

    
465
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
466
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
467
                           int x_offset, int y_offset,
468
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
469
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
470
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
471
                           int list0, int list1){
472
    MpegEncContext * const s = &h->s;
473

    
474
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
475
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
476
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
477
    x_offset += 8*s->mb_x;
478
    y_offset += 8*(s->mb_y >> MB_FIELD);
479

    
480
    if(list0 && list1){
481
        /* don't optimize for luma-only case, since B-frames usually
482
         * use implicit weights => chroma too. */
483
        uint8_t *tmp_cb = s->obmc_scratchpad;
484
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
485
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
486
        int refn0 = h->ref_cache[0][ scan8[n] ];
487
        int refn1 = h->ref_cache[1][ scan8[n] ];
488

    
489
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
490
                    dest_y, dest_cb, dest_cr,
491
                    x_offset, y_offset, qpix_put, chroma_put);
492
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
493
                    tmp_y, tmp_cb, tmp_cr,
494
                    x_offset, y_offset, qpix_put, chroma_put);
495

    
496
        if(h->use_weight == 2){
497
            int weight0 = h->implicit_weight[refn0][refn1];
498
            int weight1 = 64 - weight0;
499
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
500
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
501
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
502
        }else{
503
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
504
                            h->luma_weight[0][refn0], h->luma_weight[1][refn1],
505
                            h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
506
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
507
                            h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
508
                            h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
509
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
510
                            h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
511
                            h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
512
        }
513
    }else{
514
        int list = list1 ? 1 : 0;
515
        int refn = h->ref_cache[list][ scan8[n] ];
516
        Picture *ref= &h->ref_list[list][refn];
517
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
518
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
519
                    qpix_put, chroma_put);
520

    
521
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
522
                       h->luma_weight[list][refn], h->luma_offset[list][refn]);
523
        if(h->use_weight_chroma){
524
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
525
                             h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
526
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
527
                             h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
528
        }
529
    }
530
}
531

    
532
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
533
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
534
                           int x_offset, int y_offset,
535
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
536
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
537
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
538
                           int list0, int list1){
539
    if((h->use_weight==2 && list0 && list1
540
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
541
       || h->use_weight==1)
542
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
543
                         x_offset, y_offset, qpix_put, chroma_put,
544
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
545
    else
546
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
547
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
548
}
549

    
550
static inline void prefetch_motion(H264Context *h, int list){
551
    /* fetch pixels for estimated mv 4 macroblocks ahead
552
     * optimized for 64byte cache lines */
553
    MpegEncContext * const s = &h->s;
554
    const int refn = h->ref_cache[list][scan8[0]];
555
    if(refn >= 0){
556
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
557
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
558
        uint8_t **src= h->ref_list[list][refn].data;
559
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
560
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
561
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
562
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
563
    }
564
}
565

    
566
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
567
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
568
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
569
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
570
    MpegEncContext * const s = &h->s;
571
    const int mb_xy= h->mb_xy;
572
    const int mb_type= s->current_picture.mb_type[mb_xy];
573

    
574
    assert(IS_INTER(mb_type));
575

    
576
    prefetch_motion(h, 0);
577

    
578
    if(IS_16X16(mb_type)){
579
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
580
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
581
                weight_op, weight_avg,
582
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
583
    }else if(IS_16X8(mb_type)){
584
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
585
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
586
                &weight_op[1], &weight_avg[1],
587
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
588
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
589
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
590
                &weight_op[1], &weight_avg[1],
591
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
592
    }else if(IS_8X16(mb_type)){
593
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
594
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
595
                &weight_op[2], &weight_avg[2],
596
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
597
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
598
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
599
                &weight_op[2], &weight_avg[2],
600
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
601
    }else{
602
        int i;
603

    
604
        assert(IS_8X8(mb_type));
605

    
606
        for(i=0; i<4; i++){
607
            const int sub_mb_type= h->sub_mb_type[i];
608
            const int n= 4*i;
609
            int x_offset= (i&1)<<2;
610
            int y_offset= (i&2)<<1;
611

    
612
            if(IS_SUB_8X8(sub_mb_type)){
613
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
614
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
615
                    &weight_op[3], &weight_avg[3],
616
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
617
            }else if(IS_SUB_8X4(sub_mb_type)){
618
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
619
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
620
                    &weight_op[4], &weight_avg[4],
621
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
622
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
623
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
624
                    &weight_op[4], &weight_avg[4],
625
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
626
            }else if(IS_SUB_4X8(sub_mb_type)){
627
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
628
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
629
                    &weight_op[5], &weight_avg[5],
630
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
631
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
632
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
633
                    &weight_op[5], &weight_avg[5],
634
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
635
            }else{
636
                int j;
637
                assert(IS_SUB_4X4(sub_mb_type));
638
                for(j=0; j<4; j++){
639
                    int sub_x_offset= x_offset + 2*(j&1);
640
                    int sub_y_offset= y_offset +   (j&2);
641
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
642
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
643
                        &weight_op[6], &weight_avg[6],
644
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
645
                }
646
            }
647
        }
648
    }
649

    
650
    prefetch_motion(h, 1);
651
}
652

    
653

    
654
static void free_tables(H264Context *h){
655
    int i;
656
    H264Context *hx;
657
    av_freep(&h->intra4x4_pred_mode);
658
    av_freep(&h->chroma_pred_mode_table);
659
    av_freep(&h->cbp_table);
660
    av_freep(&h->mvd_table[0]);
661
    av_freep(&h->mvd_table[1]);
662
    av_freep(&h->direct_table);
663
    av_freep(&h->non_zero_count);
664
    av_freep(&h->slice_table_base);
665
    h->slice_table= NULL;
666
    av_freep(&h->list_counts);
667

    
668
    av_freep(&h->mb2b_xy);
669
    av_freep(&h->mb2b8_xy);
670

    
671
    for(i = 0; i < MAX_THREADS; i++) {
672
        hx = h->thread_context[i];
673
        if(!hx) continue;
674
        av_freep(&hx->top_borders[1]);
675
        av_freep(&hx->top_borders[0]);
676
        av_freep(&hx->s.obmc_scratchpad);
677
        av_freep(&hx->rbsp_buffer[1]);
678
        av_freep(&hx->rbsp_buffer[0]);
679
        hx->rbsp_buffer_size[0] = 0;
680
        hx->rbsp_buffer_size[1] = 0;
681
        if (i) av_freep(&h->thread_context[i]);
682
    }
683
}
684

    
685
static void init_dequant8_coeff_table(H264Context *h){
686
    int i,q,x;
687
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
688
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
689
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
690

    
691
    for(i=0; i<2; i++ ){
692
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
693
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
694
            break;
695
        }
696

    
697
        for(q=0; q<52; q++){
698
            int shift = div6[q];
699
            int idx = rem6[q];
700
            for(x=0; x<64; x++)
701
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
702
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
703
                    h->pps.scaling_matrix8[i][x]) << shift;
704
        }
705
    }
706
}
707

    
708
static void init_dequant4_coeff_table(H264Context *h){
709
    int i,j,q,x;
710
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
711
    for(i=0; i<6; i++ ){
712
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
713
        for(j=0; j<i; j++){
714
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
715
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
716
                break;
717
            }
718
        }
719
        if(j<i)
720
            continue;
721

    
722
        for(q=0; q<52; q++){
723
            int shift = div6[q] + 2;
724
            int idx = rem6[q];
725
            for(x=0; x<16; x++)
726
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
727
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
728
                    h->pps.scaling_matrix4[i][x]) << shift;
729
        }
730
    }
731
}
732

    
733
static void init_dequant_tables(H264Context *h){
734
    int i,x;
735
    init_dequant4_coeff_table(h);
736
    if(h->pps.transform_8x8_mode)
737
        init_dequant8_coeff_table(h);
738
    if(h->sps.transform_bypass){
739
        for(i=0; i<6; i++)
740
            for(x=0; x<16; x++)
741
                h->dequant4_coeff[i][0][x] = 1<<6;
742
        if(h->pps.transform_8x8_mode)
743
            for(i=0; i<2; i++)
744
                for(x=0; x<64; x++)
745
                    h->dequant8_coeff[i][0][x] = 1<<6;
746
    }
747
}
748

    
749

    
750
int ff_h264_alloc_tables(H264Context *h){
751
    MpegEncContext * const s = &h->s;
752
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
753
    int x,y;
754

    
755
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8  * sizeof(uint8_t), fail)
756

    
757
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
758
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
759
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
760

    
761
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
762
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail);
763
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
764
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
765
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
766

    
767
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
768
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
769

    
770
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
771
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
772
    for(y=0; y<s->mb_height; y++){
773
        for(x=0; x<s->mb_width; x++){
774
            const int mb_xy= x + y*s->mb_stride;
775
            const int b_xy = 4*x + 4*y*h->b_stride;
776
            const int b8_xy= 2*x + 2*y*h->b8_stride;
777

    
778
            h->mb2b_xy [mb_xy]= b_xy;
779
            h->mb2b8_xy[mb_xy]= b8_xy;
780
        }
781
    }
782

    
783
    s->obmc_scratchpad = NULL;
784

    
785
    if(!h->dequant4_coeff[0])
786
        init_dequant_tables(h);
787

    
788
    return 0;
789
fail:
790
    free_tables(h);
791
    return -1;
792
}
793

    
794
/**
795
 * Mimic alloc_tables(), but for every context thread.
796
 */
797
static void clone_tables(H264Context *dst, H264Context *src){
798
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode;
799
    dst->non_zero_count           = src->non_zero_count;
800
    dst->slice_table              = src->slice_table;
801
    dst->cbp_table                = src->cbp_table;
802
    dst->mb2b_xy                  = src->mb2b_xy;
803
    dst->mb2b8_xy                 = src->mb2b8_xy;
804
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
805
    dst->mvd_table[0]             = src->mvd_table[0];
806
    dst->mvd_table[1]             = src->mvd_table[1];
807
    dst->direct_table             = src->direct_table;
808
    dst->list_counts              = src->list_counts;
809

    
810
    dst->s.obmc_scratchpad = NULL;
811
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
812
}
813

    
814
/**
815
 * Init context
816
 * Allocate buffers which are not shared amongst multiple threads.
817
 */
818
static int context_init(H264Context *h){
819
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
820
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
821

    
822
    return 0;
823
fail:
824
    return -1; // free_tables will clean up for us
825
}
826

    
827
static av_cold void common_init(H264Context *h){
828
    MpegEncContext * const s = &h->s;
829

    
830
    s->width = s->avctx->width;
831
    s->height = s->avctx->height;
832
    s->codec_id= s->avctx->codec->id;
833

    
834
    ff_h264_pred_init(&h->hpc, s->codec_id);
835

    
836
    h->dequant_coeff_pps= -1;
837
    s->unrestricted_mv=1;
838
    s->decode=1; //FIXME
839

    
840
    dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
841

    
842
    memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
843
    memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
844
}
845

    
846
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
847
    H264Context *h= avctx->priv_data;
848
    MpegEncContext * const s = &h->s;
849

    
850
    MPV_decode_defaults(s);
851

    
852
    s->avctx = avctx;
853
    common_init(h);
854

    
855
    s->out_format = FMT_H264;
856
    s->workaround_bugs= avctx->workaround_bugs;
857

    
858
    // set defaults
859
//    s->decode_mb= ff_h263_decode_mb;
860
    s->quarter_sample = 1;
861
    if(!avctx->has_b_frames)
862
    s->low_delay= 1;
863

    
864
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
865

    
866
    ff_h264_decode_init_vlc();
867

    
868
    if(avctx->extradata_size > 0 && avctx->extradata &&
869
       *(char *)avctx->extradata == 1){
870
        h->is_avc = 1;
871
        h->got_avcC = 0;
872
    } else {
873
        h->is_avc = 0;
874
    }
875

    
876
    h->thread_context[0] = h;
877
    h->outputed_poc = INT_MIN;
878
    h->prev_poc_msb= 1<<16;
879
    ff_h264_reset_sei(h);
880
    if(avctx->codec_id == CODEC_ID_H264){
881
        if(avctx->ticks_per_frame == 1){
882
            s->avctx->time_base.den *=2;
883
        }
884
        avctx->ticks_per_frame = 2;
885
    }
886
    return 0;
887
}
888

    
889
int ff_h264_frame_start(H264Context *h){
890
    MpegEncContext * const s = &h->s;
891
    int i;
892

    
893
    if(MPV_frame_start(s, s->avctx) < 0)
894
        return -1;
895
    ff_er_frame_start(s);
896
    /*
897
     * MPV_frame_start uses pict_type to derive key_frame.
898
     * This is incorrect for H.264; IDR markings must be used.
899
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
900
     * See decode_nal_units().
901
     */
902
    s->current_picture_ptr->key_frame= 0;
903
    s->current_picture_ptr->mmco_reset= 0;
904

    
905
    assert(s->linesize && s->uvlinesize);
906

    
907
    for(i=0; i<16; i++){
908
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
909
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
910
    }
911
    for(i=0; i<4; i++){
912
        h->block_offset[16+i]=
913
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
914
        h->block_offset[24+16+i]=
915
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
916
    }
917

    
918
    /* can't be in alloc_tables because linesize isn't known there.
919
     * FIXME: redo bipred weight to not require extra buffer? */
920
    for(i = 0; i < s->avctx->thread_count; i++)
921
        if(!h->thread_context[i]->s.obmc_scratchpad)
922
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
923

    
924
    /* some macroblocks will be accessed before they're available */
925
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
926
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
927

    
928
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
929

    
930
    // We mark the current picture as non-reference after allocating it, so
931
    // that if we break out due to an error it can be released automatically
932
    // in the next MPV_frame_start().
933
    // SVQ3 as well as most other codecs have only last/next/current and thus
934
    // get released even with set reference, besides SVQ3 and others do not
935
    // mark frames as reference later "naturally".
936
    if(s->codec_id != CODEC_ID_SVQ3)
937
        s->current_picture_ptr->reference= 0;
938

    
939
    s->current_picture_ptr->field_poc[0]=
940
    s->current_picture_ptr->field_poc[1]= INT_MAX;
941
    assert(s->current_picture_ptr->long_ref==0);
942

    
943
    return 0;
944
}
945

    
946
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){
947
    MpegEncContext * const s = &h->s;
948
    int top_idx = 1;
949

    
950
    src_y  -=   linesize;
951
    src_cb -= uvlinesize;
952
    src_cr -= uvlinesize;
953

    
954
    if(!simple && FRAME_MBAFF){
955
        if(s->mb_y&1){
956
            if(!MB_MBAFF){
957
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y +  15*linesize);
958
                *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
959
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
960
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
961
                    *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
962
                }
963
            }
964
        }else if(MB_MBAFF){
965
            top_idx = 0;
966
        }else
967
            return;
968
    }
969

    
970
    // There are two lines saved, the line above the the top macroblock of a pair,
971
    // and the line above the bottom macroblock
972

    
973
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y +  16*linesize);
974
    *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
975

    
976
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
977
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
978
        *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
979
    }
980
}
981

    
982
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){
983
    MpegEncContext * const s = &h->s;
984
    int temp8, i;
985
    uint64_t temp64;
986
    int deblock_left;
987
    int deblock_top;
988
    int mb_xy;
989
    int top_idx = 1;
990

    
991
    if(!simple && FRAME_MBAFF){
992
        if(s->mb_y&1){
993
            if(!MB_MBAFF)
994
                return;
995
        }else{
996
            top_idx = MB_MBAFF ? 0 : 1;
997
        }
998
    }
999

    
1000
    if(h->deblocking_filter == 2) {
1001
        mb_xy = h->mb_xy;
1002
        deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
1003
        deblock_top  = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
1004
    } else {
1005
        deblock_left = (s->mb_x > 0);
1006
        deblock_top =  (s->mb_y > !!MB_FIELD);
1007
    }
1008

    
1009
    src_y  -=   linesize + 1;
1010
    src_cb -= uvlinesize + 1;
1011
    src_cr -= uvlinesize + 1;
1012

    
1013
#define XCHG(a,b,t,xchg)\
1014
t= a;\
1015
if(xchg)\
1016
    a= b;\
1017
b= t;
1018

    
1019
    if(deblock_top){
1020
        if(deblock_left){
1021
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+8), *(uint64_t*)(src_y -7), temp64, 1);
1022
        }
1023
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
1024
        XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
1025
        if(s->mb_x+1 < s->mb_width){
1026
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
1027
        }
1028
    }
1029

    
1030
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1031
        if(deblock_top){
1032
            if(deblock_left){
1033
                XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+16), *(uint64_t*)(src_cb -7), temp64, 1);
1034
                XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x-1]+24), *(uint64_t*)(src_cr -7), temp64, 1);
1035
            }
1036
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
1037
            XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
1038
        }
1039
    }
1040
}
1041

    
1042
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1043
    MpegEncContext * const s = &h->s;
1044
    const int mb_x= s->mb_x;
1045
    const int mb_y= s->mb_y;
1046
    const int mb_xy= h->mb_xy;
1047
    const int mb_type= s->current_picture.mb_type[mb_xy];
1048
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1049
    int linesize, uvlinesize /*dct_offset*/;
1050
    int i;
1051
    int *block_offset = &h->block_offset[0];
1052
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1053
    /* is_h264 should always be true if SVQ3 is disabled. */
1054
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1055
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1056
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1057

    
1058
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1059
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1060
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1061

    
1062
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1063
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1064

    
1065
    h->list_counts[mb_xy]= h->list_count;
1066

    
1067
    if (!simple && MB_FIELD) {
1068
        linesize   = h->mb_linesize   = s->linesize * 2;
1069
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1070
        block_offset = &h->block_offset[24];
1071
        if(mb_y&1){ //FIXME move out of this function?
1072
            dest_y -= s->linesize*15;
1073
            dest_cb-= s->uvlinesize*7;
1074
            dest_cr-= s->uvlinesize*7;
1075
        }
1076
        if(FRAME_MBAFF) {
1077
            int list;
1078
            for(list=0; list<h->list_count; list++){
1079
                if(!USES_LIST(mb_type, list))
1080
                    continue;
1081
                if(IS_16X16(mb_type)){
1082
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1083
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1084
                }else{
1085
                    for(i=0; i<16; i+=4){
1086
                        int ref = h->ref_cache[list][scan8[i]];
1087
                        if(ref >= 0)
1088
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1089
                    }
1090
                }
1091
            }
1092
        }
1093
    } else {
1094
        linesize   = h->mb_linesize   = s->linesize;
1095
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1096
//        dct_offset = s->linesize * 16;
1097
    }
1098

    
1099
    if (!simple && IS_INTRA_PCM(mb_type)) {
1100
        for (i=0; i<16; i++) {
1101
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1102
        }
1103
        for (i=0; i<8; i++) {
1104
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1105
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1106
        }
1107
    } else {
1108
        if(IS_INTRA(mb_type)){
1109
            if(h->deblocking_filter)
1110
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1111

    
1112
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1113
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1114
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1115
            }
1116

    
1117
            if(IS_INTRA4x4(mb_type)){
1118
                if(simple || !s->encoding){
1119
                    if(IS_8x8DCT(mb_type)){
1120
                        if(transform_bypass){
1121
                            idct_dc_add =
1122
                            idct_add    = s->dsp.add_pixels8;
1123
                        }else{
1124
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
1125
                            idct_add    = s->dsp.h264_idct8_add;
1126
                        }
1127
                        for(i=0; i<16; i+=4){
1128
                            uint8_t * const ptr= dest_y + block_offset[i];
1129
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1130
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1131
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1132
                            }else{
1133
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1134
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1135
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1136
                                if(nnz){
1137
                                    if(nnz == 1 && h->mb[i*16])
1138
                                        idct_dc_add(ptr, h->mb + i*16, linesize);
1139
                                    else
1140
                                        idct_add   (ptr, h->mb + i*16, linesize);
1141
                                }
1142
                            }
1143
                        }
1144
                    }else{
1145
                        if(transform_bypass){
1146
                            idct_dc_add =
1147
                            idct_add    = s->dsp.add_pixels4;
1148
                        }else{
1149
                            idct_dc_add = s->dsp.h264_idct_dc_add;
1150
                            idct_add    = s->dsp.h264_idct_add;
1151
                        }
1152
                        for(i=0; i<16; i++){
1153
                            uint8_t * const ptr= dest_y + block_offset[i];
1154
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1155

    
1156
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1157
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1158
                            }else{
1159
                                uint8_t *topright;
1160
                                int nnz, tr;
1161
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1162
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1163
                                    assert(mb_y || linesize <= block_offset[i]);
1164
                                    if(!topright_avail){
1165
                                        tr= ptr[3 - linesize]*0x01010101;
1166
                                        topright= (uint8_t*) &tr;
1167
                                    }else
1168
                                        topright= ptr + 4 - linesize;
1169
                                }else
1170
                                    topright= NULL;
1171

    
1172
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1173
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1174
                                if(nnz){
1175
                                    if(is_h264){
1176
                                        if(nnz == 1 && h->mb[i*16])
1177
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1178
                                        else
1179
                                            idct_add   (ptr, h->mb + i*16, linesize);
1180
                                    }else
1181
                                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1182
                                }
1183
                            }
1184
                        }
1185
                    }
1186
                }
1187
            }else{
1188
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1189
                if(is_h264){
1190
                    if(!transform_bypass)
1191
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1192
                }else
1193
                    svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1194
            }
1195
            if(h->deblocking_filter)
1196
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1197
        }else if(is_h264){
1198
            hl_motion(h, dest_y, dest_cb, dest_cr,
1199
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1200
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1201
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1202
        }
1203

    
1204

    
1205
        if(!IS_INTRA4x4(mb_type)){
1206
            if(is_h264){
1207
                if(IS_INTRA16x16(mb_type)){
1208
                    if(transform_bypass){
1209
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1210
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1211
                        }else{
1212
                            for(i=0; i<16; i++){
1213
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1214
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1215
                            }
1216
                        }
1217
                    }else{
1218
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1219
                    }
1220
                }else if(h->cbp&15){
1221
                    if(transform_bypass){
1222
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1223
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1224
                        for(i=0; i<16; i+=di){
1225
                            if(h->non_zero_count_cache[ scan8[i] ]){
1226
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1227
                            }
1228
                        }
1229
                    }else{
1230
                        if(IS_8x8DCT(mb_type)){
1231
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1232
                        }else{
1233
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1234
                        }
1235
                    }
1236
                }
1237
            }else{
1238
                for(i=0; i<16; i++){
1239
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1240
                        uint8_t * const ptr= dest_y + block_offset[i];
1241
                        svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1242
                    }
1243
                }
1244
            }
1245
        }
1246

    
1247
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1248
            uint8_t *dest[2] = {dest_cb, dest_cr};
1249
            if(transform_bypass){
1250
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1251
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1252
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1253
                }else{
1254
                    idct_add = s->dsp.add_pixels4;
1255
                    for(i=16; i<16+8; i++){
1256
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1257
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1258
                    }
1259
                }
1260
            }else{
1261
                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]);
1262
                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]);
1263
                if(is_h264){
1264
                    idct_add = s->dsp.h264_idct_add;
1265
                    idct_dc_add = s->dsp.h264_idct_dc_add;
1266
                    for(i=16; i<16+8; i++){
1267
                        if(h->non_zero_count_cache[ scan8[i] ])
1268
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1269
                        else if(h->mb[i*16])
1270
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1271
                    }
1272
                }else{
1273
                    for(i=16; i<16+8; i++){
1274
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1275
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1276
                            svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1277
                        }
1278
                    }
1279
                }
1280
            }
1281
        }
1282
    }
1283
    if(h->cbp || IS_INTRA(mb_type))
1284
        s->dsp.clear_blocks(h->mb);
1285

    
1286
    if(h->deblocking_filter && 0) {
1287
        backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
1288
        fill_filter_caches(h, mb_type); //FIXME don't fill stuff which isn't used by filter_mb
1289
        h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
1290
        h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
1291
        if (!simple && FRAME_MBAFF) {
1292
            ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1293
        } else {
1294
            ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1295
        }
1296
    }
1297
}
1298

    
1299
/**
1300
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1301
 */
1302
static void hl_decode_mb_simple(H264Context *h){
1303
    hl_decode_mb_internal(h, 1);
1304
}
1305

    
1306
/**
1307
 * Process a macroblock; this handles edge cases, such as interlacing.
1308
 */
1309
static void av_noinline hl_decode_mb_complex(H264Context *h){
1310
    hl_decode_mb_internal(h, 0);
1311
}
1312

    
1313
void ff_h264_hl_decode_mb(H264Context *h){
1314
    MpegEncContext * const s = &h->s;
1315
    const int mb_xy= h->mb_xy;
1316
    const int mb_type= s->current_picture.mb_type[mb_xy];
1317
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1318

    
1319
    if (is_complex)
1320
        hl_decode_mb_complex(h);
1321
    else hl_decode_mb_simple(h);
1322
}
1323

    
1324
static int pred_weight_table(H264Context *h){
1325
    MpegEncContext * const s = &h->s;
1326
    int list, i;
1327
    int luma_def, chroma_def;
1328

    
1329
    h->use_weight= 0;
1330
    h->use_weight_chroma= 0;
1331
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1332
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1333
    luma_def = 1<<h->luma_log2_weight_denom;
1334
    chroma_def = 1<<h->chroma_log2_weight_denom;
1335

    
1336
    for(list=0; list<2; list++){
1337
        h->luma_weight_flag[list]   = 0;
1338
        h->chroma_weight_flag[list] = 0;
1339
        for(i=0; i<h->ref_count[list]; i++){
1340
            int luma_weight_flag, chroma_weight_flag;
1341

    
1342
            luma_weight_flag= get_bits1(&s->gb);
1343
            if(luma_weight_flag){
1344
                h->luma_weight[list][i]= get_se_golomb(&s->gb);
1345
                h->luma_offset[list][i]= get_se_golomb(&s->gb);
1346
                if(   h->luma_weight[list][i] != luma_def
1347
                   || h->luma_offset[list][i] != 0) {
1348
                    h->use_weight= 1;
1349
                    h->luma_weight_flag[list]= 1;
1350
                }
1351
            }else{
1352
                h->luma_weight[list][i]= luma_def;
1353
                h->luma_offset[list][i]= 0;
1354
            }
1355

    
1356
            if(CHROMA){
1357
                chroma_weight_flag= get_bits1(&s->gb);
1358
                if(chroma_weight_flag){
1359
                    int j;
1360
                    for(j=0; j<2; j++){
1361
                        h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1362
                        h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1363
                        if(   h->chroma_weight[list][i][j] != chroma_def
1364
                           || h->chroma_offset[list][i][j] != 0) {
1365
                            h->use_weight_chroma= 1;
1366
                            h->chroma_weight_flag[list]= 1;
1367
                        }
1368
                    }
1369
                }else{
1370
                    int j;
1371
                    for(j=0; j<2; j++){
1372
                        h->chroma_weight[list][i][j]= chroma_def;
1373
                        h->chroma_offset[list][i][j]= 0;
1374
                    }
1375
                }
1376
            }
1377
        }
1378
        if(h->slice_type_nos != FF_B_TYPE) break;
1379
    }
1380
    h->use_weight= h->use_weight || h->use_weight_chroma;
1381
    return 0;
1382
}
1383

    
1384
static void implicit_weight_table(H264Context *h){
1385
    MpegEncContext * const s = &h->s;
1386
    int ref0, ref1, i;
1387
    int cur_poc = s->current_picture_ptr->poc;
1388

    
1389
    for (i = 0; i < 2; i++) {
1390
        h->luma_weight_flag[i]   = 0;
1391
        h->chroma_weight_flag[i] = 0;
1392
    }
1393

    
1394
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
1395
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1396
        h->use_weight= 0;
1397
        h->use_weight_chroma= 0;
1398
        return;
1399
    }
1400

    
1401
    h->use_weight= 2;
1402
    h->use_weight_chroma= 2;
1403
    h->luma_log2_weight_denom= 5;
1404
    h->chroma_log2_weight_denom= 5;
1405

    
1406
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1407
        int poc0 = h->ref_list[0][ref0].poc;
1408
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1409
            int poc1 = h->ref_list[1][ref1].poc;
1410
            int td = av_clip(poc1 - poc0, -128, 127);
1411
            if(td){
1412
                int tb = av_clip(cur_poc - poc0, -128, 127);
1413
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1414
                int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1415
                if(dist_scale_factor < -64 || dist_scale_factor > 128)
1416
                    h->implicit_weight[ref0][ref1] = 32;
1417
                else
1418
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1419
            }else
1420
                h->implicit_weight[ref0][ref1] = 32;
1421
        }
1422
    }
1423
}
1424

    
1425
/**
1426
 * instantaneous decoder refresh.
1427
 */
1428
static void idr(H264Context *h){
1429
    ff_h264_remove_all_refs(h);
1430
    h->prev_frame_num= 0;
1431
    h->prev_frame_num_offset= 0;
1432
    h->prev_poc_msb=
1433
    h->prev_poc_lsb= 0;
1434
}
1435

    
1436
/* forget old pics after a seek */
1437
static void flush_dpb(AVCodecContext *avctx){
1438
    H264Context *h= avctx->priv_data;
1439
    int i;
1440
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1441
        if(h->delayed_pic[i])
1442
            h->delayed_pic[i]->reference= 0;
1443
        h->delayed_pic[i]= NULL;
1444
    }
1445
    h->outputed_poc= INT_MIN;
1446
    h->prev_interlaced_frame = 1;
1447
    idr(h);
1448
    if(h->s.current_picture_ptr)
1449
        h->s.current_picture_ptr->reference= 0;
1450
    h->s.first_field= 0;
1451
    ff_h264_reset_sei(h);
1452
    ff_mpeg_flush(avctx);
1453
}
1454

    
1455
static int init_poc(H264Context *h){
1456
    MpegEncContext * const s = &h->s;
1457
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1458
    int field_poc[2];
1459
    Picture *cur = s->current_picture_ptr;
1460

    
1461
    h->frame_num_offset= h->prev_frame_num_offset;
1462
    if(h->frame_num < h->prev_frame_num)
1463
        h->frame_num_offset += max_frame_num;
1464

    
1465
    if(h->sps.poc_type==0){
1466
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1467

    
1468
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1469
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1470
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1471
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1472
        else
1473
            h->poc_msb = h->prev_poc_msb;
1474
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1475
        field_poc[0] =
1476
        field_poc[1] = h->poc_msb + h->poc_lsb;
1477
        if(s->picture_structure == PICT_FRAME)
1478
            field_poc[1] += h->delta_poc_bottom;
1479
    }else if(h->sps.poc_type==1){
1480
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1481
        int i;
1482

    
1483
        if(h->sps.poc_cycle_length != 0)
1484
            abs_frame_num = h->frame_num_offset + h->frame_num;
1485
        else
1486
            abs_frame_num = 0;
1487

    
1488
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1489
            abs_frame_num--;
1490

    
1491
        expected_delta_per_poc_cycle = 0;
1492
        for(i=0; i < h->sps.poc_cycle_length; i++)
1493
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1494

    
1495
        if(abs_frame_num > 0){
1496
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1497
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1498

    
1499
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1500
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1501
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1502
        } else
1503
            expectedpoc = 0;
1504

    
1505
        if(h->nal_ref_idc == 0)
1506
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1507

    
1508
        field_poc[0] = expectedpoc + h->delta_poc[0];
1509
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1510

    
1511
        if(s->picture_structure == PICT_FRAME)
1512
            field_poc[1] += h->delta_poc[1];
1513
    }else{
1514
        int poc= 2*(h->frame_num_offset + h->frame_num);
1515

    
1516
        if(!h->nal_ref_idc)
1517
            poc--;
1518

    
1519
        field_poc[0]= poc;
1520
        field_poc[1]= poc;
1521
    }
1522

    
1523
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1524
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1525
    if(s->picture_structure != PICT_TOP_FIELD)
1526
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1527
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1528

    
1529
    return 0;
1530
}
1531

    
1532

    
1533
/**
1534
 * initialize scan tables
1535
 */
1536
static void init_scan_tables(H264Context *h){
1537
    MpegEncContext * const s = &h->s;
1538
    int i;
1539
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1540
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1541
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
1542
    }else{
1543
        for(i=0; i<16; i++){
1544
#define T(x) (x>>2) | ((x<<2) & 0xF)
1545
            h->zigzag_scan[i] = T(zigzag_scan[i]);
1546
            h-> field_scan[i] = T( field_scan[i]);
1547
#undef T
1548
        }
1549
    }
1550
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1551
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
1552
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1553
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
1554
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
1555
    }else{
1556
        for(i=0; i<64; i++){
1557
#define T(x) (x>>3) | ((x&7)<<3)
1558
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1559
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1560
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
1561
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1562
#undef T
1563
        }
1564
    }
1565
    if(h->sps.transform_bypass){ //FIXME same ugly
1566
        h->zigzag_scan_q0          = zigzag_scan;
1567
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1568
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1569
        h->field_scan_q0           = field_scan;
1570
        h->field_scan8x8_q0        = field_scan8x8;
1571
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1572
    }else{
1573
        h->zigzag_scan_q0          = h->zigzag_scan;
1574
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1575
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1576
        h->field_scan_q0           = h->field_scan;
1577
        h->field_scan8x8_q0        = h->field_scan8x8;
1578
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1579
    }
1580
}
1581

    
1582
static void field_end(H264Context *h){
1583
    MpegEncContext * const s = &h->s;
1584
    AVCodecContext * const avctx= s->avctx;
1585
    s->mb_y= 0;
1586

    
1587
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1588
    s->current_picture_ptr->pict_type= s->pict_type;
1589

    
1590
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1591
        ff_vdpau_h264_set_reference_frames(s);
1592

    
1593
    if(!s->dropable) {
1594
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1595
        h->prev_poc_msb= h->poc_msb;
1596
        h->prev_poc_lsb= h->poc_lsb;
1597
    }
1598
    h->prev_frame_num_offset= h->frame_num_offset;
1599
    h->prev_frame_num= h->frame_num;
1600

    
1601
    if (avctx->hwaccel) {
1602
        if (avctx->hwaccel->end_frame(avctx) < 0)
1603
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1604
    }
1605

    
1606
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1607
        ff_vdpau_h264_picture_complete(s);
1608

    
1609
    /*
1610
     * FIXME: Error handling code does not seem to support interlaced
1611
     * when slices span multiple rows
1612
     * The ff_er_add_slice calls don't work right for bottom
1613
     * fields; they cause massive erroneous error concealing
1614
     * Error marking covers both fields (top and bottom).
1615
     * This causes a mismatched s->error_count
1616
     * and a bad error table. Further, the error count goes to
1617
     * INT_MAX when called for bottom field, because mb_y is
1618
     * past end by one (callers fault) and resync_mb_y != 0
1619
     * causes problems for the first MB line, too.
1620
     */
1621
    if (!FIELD_PICTURE)
1622
        ff_er_frame_end(s);
1623

    
1624
    MPV_frame_end(s);
1625

    
1626
    h->current_slice=0;
1627
}
1628

    
1629
/**
1630
 * Replicates H264 "master" context to thread contexts.
1631
 */
1632
static void clone_slice(H264Context *dst, H264Context *src)
1633
{
1634
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1635
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1636
    dst->s.current_picture      = src->s.current_picture;
1637
    dst->s.linesize             = src->s.linesize;
1638
    dst->s.uvlinesize           = src->s.uvlinesize;
1639
    dst->s.first_field          = src->s.first_field;
1640

    
1641
    dst->prev_poc_msb           = src->prev_poc_msb;
1642
    dst->prev_poc_lsb           = src->prev_poc_lsb;
1643
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1644
    dst->prev_frame_num         = src->prev_frame_num;
1645
    dst->short_ref_count        = src->short_ref_count;
1646

    
1647
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1648
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1649
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1650
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1651

    
1652
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1653
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1654
}
1655

    
1656
/**
1657
 * decodes a slice header.
1658
 * This will also call MPV_common_init() and frame_start() as needed.
1659
 *
1660
 * @param h h264context
1661
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1662
 *
1663
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1664
 */
1665
static int decode_slice_header(H264Context *h, H264Context *h0){
1666
    MpegEncContext * const s = &h->s;
1667
    MpegEncContext * const s0 = &h0->s;
1668
    unsigned int first_mb_in_slice;
1669
    unsigned int pps_id;
1670
    int num_ref_idx_active_override_flag;
1671
    unsigned int slice_type, tmp, i, j;
1672
    int default_ref_list_done = 0;
1673
    int last_pic_structure;
1674

    
1675
    s->dropable= h->nal_ref_idc == 0;
1676

    
1677
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1678
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1679
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1680
    }else{
1681
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1682
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1683
    }
1684

    
1685
    first_mb_in_slice= get_ue_golomb(&s->gb);
1686

    
1687
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1688
        if(h0->current_slice && FIELD_PICTURE){
1689
            field_end(h);
1690
        }
1691

    
1692
        h0->current_slice = 0;
1693
        if (!s0->first_field)
1694
            s->current_picture_ptr= NULL;
1695
    }
1696

    
1697
    slice_type= get_ue_golomb_31(&s->gb);
1698
    if(slice_type > 9){
1699
        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);
1700
        return -1;
1701
    }
1702
    if(slice_type > 4){
1703
        slice_type -= 5;
1704
        h->slice_type_fixed=1;
1705
    }else
1706
        h->slice_type_fixed=0;
1707

    
1708
    slice_type= golomb_to_pict_type[ slice_type ];
1709
    if (slice_type == FF_I_TYPE
1710
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1711
        default_ref_list_done = 1;
1712
    }
1713
    h->slice_type= slice_type;
1714
    h->slice_type_nos= slice_type & 3;
1715

    
1716
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1717
    if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
1718
        av_log(h->s.avctx, AV_LOG_ERROR,
1719
               "B picture before any references, skipping\n");
1720
        return -1;
1721
    }
1722

    
1723
    pps_id= get_ue_golomb(&s->gb);
1724
    if(pps_id>=MAX_PPS_COUNT){
1725
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1726
        return -1;
1727
    }
1728
    if(!h0->pps_buffers[pps_id]) {
1729
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1730
        return -1;
1731
    }
1732
    h->pps= *h0->pps_buffers[pps_id];
1733

    
1734
    if(!h0->sps_buffers[h->pps.sps_id]) {
1735
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1736
        return -1;
1737
    }
1738
    h->sps = *h0->sps_buffers[h->pps.sps_id];
1739

    
1740
    if(h == h0 && h->dequant_coeff_pps != pps_id){
1741
        h->dequant_coeff_pps = pps_id;
1742
        init_dequant_tables(h);
1743
    }
1744

    
1745
    s->mb_width= h->sps.mb_width;
1746
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1747

    
1748
    h->b_stride=  s->mb_width*4;
1749
    h->b8_stride= s->mb_width*2;
1750

    
1751
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1752
    if(h->sps.frame_mbs_only_flag)
1753
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1754
    else
1755
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1756

    
1757
    if (s->context_initialized
1758
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
1759
        if(h != h0)
1760
            return -1;   // width / height changed during parallelized decoding
1761
        free_tables(h);
1762
        flush_dpb(s->avctx);
1763
        MPV_common_end(s);
1764
    }
1765
    if (!s->context_initialized) {
1766
        if(h != h0)
1767
            return -1;  // we cant (re-)initialize context during parallel decoding
1768

    
1769
        avcodec_set_dimensions(s->avctx, s->width, s->height);
1770
        s->avctx->sample_aspect_ratio= h->sps.sar;
1771
        if(!s->avctx->sample_aspect_ratio.den)
1772
            s->avctx->sample_aspect_ratio.den = 1;
1773

    
1774
        if(h->sps.video_signal_type_present_flag){
1775
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1776
            if(h->sps.colour_description_present_flag){
1777
                s->avctx->color_primaries = h->sps.color_primaries;
1778
                s->avctx->color_trc       = h->sps.color_trc;
1779
                s->avctx->colorspace      = h->sps.colorspace;
1780
            }
1781
        }
1782

    
1783
        if(h->sps.timing_info_present_flag){
1784
            s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale};
1785
            if(h->x264_build > 0 && h->x264_build < 44)
1786
                s->avctx->time_base.den *= 2;
1787
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1788
                      s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
1789
        }
1790
        s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1791
        s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1792

    
1793
        if (MPV_common_init(s) < 0)
1794
            return -1;
1795
        s->first_field = 0;
1796
        h->prev_interlaced_frame = 1;
1797

    
1798
        init_scan_tables(h);
1799
        ff_h264_alloc_tables(h);
1800

    
1801
        for(i = 1; i < s->avctx->thread_count; i++) {
1802
            H264Context *c;
1803
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1804
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1805
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1806
            c->sps = h->sps;
1807
            c->pps = h->pps;
1808
            init_scan_tables(c);
1809
            clone_tables(c, h);
1810
        }
1811

    
1812
        for(i = 0; i < s->avctx->thread_count; i++)
1813
            if(context_init(h->thread_context[i]) < 0)
1814
                return -1;
1815
    }
1816

    
1817
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1818

    
1819
    h->mb_mbaff = 0;
1820
    h->mb_aff_frame = 0;
1821
    last_pic_structure = s0->picture_structure;
1822
    if(h->sps.frame_mbs_only_flag){
1823
        s->picture_structure= PICT_FRAME;
1824
    }else{
1825
        if(get_bits1(&s->gb)) { //field_pic_flag
1826
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1827
        } else {
1828
            s->picture_structure= PICT_FRAME;
1829
            h->mb_aff_frame = h->sps.mb_aff;
1830
        }
1831
    }
1832
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1833

    
1834
    if(h0->current_slice == 0){
1835
        while(h->frame_num !=  h->prev_frame_num &&
1836
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1837
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1838
            if (ff_h264_frame_start(h) < 0)
1839
                return -1;
1840
            h->prev_frame_num++;
1841
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1842
            s->current_picture_ptr->frame_num= h->prev_frame_num;
1843
            ff_h264_execute_ref_pic_marking(h, NULL, 0);
1844
        }
1845

    
1846
        /* See if we have a decoded first field looking for a pair... */
1847
        if (s0->first_field) {
1848
            assert(s0->current_picture_ptr);
1849
            assert(s0->current_picture_ptr->data[0]);
1850
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1851

    
1852
            /* figure out if we have a complementary field pair */
1853
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1854
                /*
1855
                 * Previous field is unmatched. Don't display it, but let it
1856
                 * remain for reference if marked as such.
1857
                 */
1858
                s0->current_picture_ptr = NULL;
1859
                s0->first_field = FIELD_PICTURE;
1860

    
1861
            } else {
1862
                if (h->nal_ref_idc &&
1863
                        s0->current_picture_ptr->reference &&
1864
                        s0->current_picture_ptr->frame_num != h->frame_num) {
1865
                    /*
1866
                     * This and previous field were reference, but had
1867
                     * different frame_nums. Consider this field first in
1868
                     * pair. Throw away previous field except for reference
1869
                     * purposes.
1870
                     */
1871
                    s0->first_field = 1;
1872
                    s0->current_picture_ptr = NULL;
1873

    
1874
                } else {
1875
                    /* Second field in complementary pair */
1876
                    s0->first_field = 0;
1877
                }
1878
            }
1879

    
1880
        } else {
1881
            /* Frame or first field in a potentially complementary pair */
1882
            assert(!s0->current_picture_ptr);
1883
            s0->first_field = FIELD_PICTURE;
1884
        }
1885

    
1886
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1887
            s0->first_field = 0;
1888
            return -1;
1889
        }
1890
    }
1891
    if(h != h0)
1892
        clone_slice(h, h0);
1893

    
1894
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1895

    
1896
    assert(s->mb_num == s->mb_width * s->mb_height);
1897
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1898
       first_mb_in_slice                    >= s->mb_num){
1899
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1900
        return -1;
1901
    }
1902
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1903
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1904
    if (s->picture_structure == PICT_BOTTOM_FIELD)
1905
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
1906
    assert(s->mb_y < s->mb_height);
1907

    
1908
    if(s->picture_structure==PICT_FRAME){
1909
        h->curr_pic_num=   h->frame_num;
1910
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1911
    }else{
1912
        h->curr_pic_num= 2*h->frame_num + 1;
1913
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1914
    }
1915

    
1916
    if(h->nal_unit_type == NAL_IDR_SLICE){
1917
        get_ue_golomb(&s->gb); /* idr_pic_id */
1918
    }
1919

    
1920
    if(h->sps.poc_type==0){
1921
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1922

    
1923
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1924
            h->delta_poc_bottom= get_se_golomb(&s->gb);
1925
        }
1926
    }
1927

    
1928
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1929
        h->delta_poc[0]= get_se_golomb(&s->gb);
1930

    
1931
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1932
            h->delta_poc[1]= get_se_golomb(&s->gb);
1933
    }
1934

    
1935
    init_poc(h);
1936

    
1937
    if(h->pps.redundant_pic_cnt_present){
1938
        h->redundant_pic_count= get_ue_golomb(&s->gb);
1939
    }
1940

    
1941
    //set defaults, might be overridden a few lines later
1942
    h->ref_count[0]= h->pps.ref_count[0];
1943
    h->ref_count[1]= h->pps.ref_count[1];
1944

    
1945
    if(h->slice_type_nos != FF_I_TYPE){
1946
        if(h->slice_type_nos == FF_B_TYPE){
1947
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
1948
        }
1949
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
1950

    
1951
        if(num_ref_idx_active_override_flag){
1952
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1953
            if(h->slice_type_nos==FF_B_TYPE)
1954
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1955

    
1956
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1957
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1958
                h->ref_count[0]= h->ref_count[1]= 1;
1959
                return -1;
1960
            }
1961
        }
1962
        if(h->slice_type_nos == FF_B_TYPE)
1963
            h->list_count= 2;
1964
        else
1965
            h->list_count= 1;
1966
    }else
1967
        h->list_count= 0;
1968

    
1969
    if(!default_ref_list_done){
1970
        ff_h264_fill_default_ref_list(h);
1971
    }
1972

    
1973
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1974
        return -1;
1975

    
1976
    if(h->slice_type_nos!=FF_I_TYPE){
1977
        s->last_picture_ptr= &h->ref_list[0][0];
1978
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
1979
    }
1980
    if(h->slice_type_nos==FF_B_TYPE){
1981
        s->next_picture_ptr= &h->ref_list[1][0];
1982
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
1983
    }
1984

    
1985
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
1986
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
1987
        pred_weight_table(h);
1988
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
1989
        implicit_weight_table(h);
1990
    else {
1991
        h->use_weight = 0;
1992
        for (i = 0; i < 2; i++) {
1993
            h->luma_weight_flag[i]   = 0;
1994
            h->chroma_weight_flag[i] = 0;
1995
        }
1996
    }
1997

    
1998
    if(h->nal_ref_idc)
1999
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2000

    
2001
    if(FRAME_MBAFF)
2002
        ff_h264_fill_mbaff_ref_list(h);
2003

    
2004
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2005
        ff_h264_direct_dist_scale_factor(h);
2006
    ff_h264_direct_ref_list_init(h);
2007

    
2008
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2009
        tmp = get_ue_golomb_31(&s->gb);
2010
        if(tmp > 2){
2011
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2012
            return -1;
2013
        }
2014
        h->cabac_init_idc= tmp;
2015
    }
2016

    
2017
    h->last_qscale_diff = 0;
2018
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2019
    if(tmp>51){
2020
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2021
        return -1;
2022
    }
2023
    s->qscale= tmp;
2024
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2025
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2026
    //FIXME qscale / qp ... stuff
2027
    if(h->slice_type == FF_SP_TYPE){
2028
        get_bits1(&s->gb); /* sp_for_switch_flag */
2029
    }
2030
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2031
        get_se_golomb(&s->gb); /* slice_qs_delta */
2032
    }
2033

    
2034
    h->deblocking_filter = 1;
2035
    h->slice_alpha_c0_offset = 52;
2036
    h->slice_beta_offset = 52;
2037
    if( h->pps.deblocking_filter_parameters_present ) {
2038
        tmp= get_ue_golomb_31(&s->gb);
2039
        if(tmp > 2){
2040
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2041
            return -1;
2042
        }
2043
        h->deblocking_filter= tmp;
2044
        if(h->deblocking_filter < 2)
2045
            h->deblocking_filter^= 1; // 1<->0
2046

    
2047
        if( h->deblocking_filter ) {
2048
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2049
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2050
            if(   h->slice_alpha_c0_offset > 104U
2051
               || h->slice_beta_offset     > 104U){
2052
                av_log(s->avctx, AV_LOG_ERROR, "deblocking filter parameters %d %d out of range\n", h->slice_alpha_c0_offset, h->slice_beta_offset);
2053
                return -1;
2054
            }
2055
        }
2056
    }
2057

    
2058
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2059
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2060
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2061
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2062
        h->deblocking_filter= 0;
2063

    
2064
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2065
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2066
            /* Cheat slightly for speed:
2067
               Do not bother to deblock across slices. */
2068
            h->deblocking_filter = 2;
2069
        } else {
2070
            h0->max_contexts = 1;
2071
            if(!h0->single_decode_warning) {
2072
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2073
                h0->single_decode_warning = 1;
2074
            }
2075
            if(h != h0)
2076
                return 1; // deblocking switched inside frame
2077
        }
2078
    }
2079
    h->qp_thresh= 15 + 52 - FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) - FFMAX3(0, h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1]);
2080

    
2081
#if 0 //FMO
2082
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2083
        slice_group_change_cycle= get_bits(&s->gb, ?);
2084
#endif
2085

    
2086
    h0->last_slice_type = slice_type;
2087
    h->slice_num = ++h0->current_slice;
2088
    if(h->slice_num >= MAX_SLICES){
2089
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2090
    }
2091

    
2092
    for(j=0; j<2; j++){
2093
        int id_list[16];
2094
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2095
        for(i=0; i<16; i++){
2096
            id_list[i]= 60;
2097
            if(h->ref_list[j][i].data[0]){
2098
                int k;
2099
                uint8_t *base= h->ref_list[j][i].base[0];
2100
                for(k=0; k<h->short_ref_count; k++)
2101
                    if(h->short_ref[k]->base[0] == base){
2102
                        id_list[i]= k;
2103
                        break;
2104
                    }
2105
                for(k=0; k<h->long_ref_count; k++)
2106
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2107
                        id_list[i]= h->short_ref_count + k;
2108
                        break;
2109
                    }
2110
            }
2111
        }
2112

    
2113
        ref2frm[0]=
2114
        ref2frm[1]= -1;
2115
        for(i=0; i<16; i++)
2116
            ref2frm[i+2]= 4*id_list[i]
2117
                          +(h->ref_list[j][i].reference&3);
2118
        ref2frm[18+0]=
2119
        ref2frm[18+1]= -1;
2120
        for(i=16; i<48; i++)
2121
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2122
                          +(h->ref_list[j][i].reference&3);
2123
    }
2124

    
2125
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2126
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2127

    
2128
    s->avctx->refs= h->sps.ref_frame_count;
2129

    
2130
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2131
        av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
2132
               h->slice_num,
2133
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2134
               first_mb_in_slice,
2135
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2136
               pps_id, h->frame_num,
2137
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2138
               h->ref_count[0], h->ref_count[1],
2139
               s->qscale,
2140
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2141
               h->use_weight,
2142
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2143
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2144
               );
2145
    }
2146

    
2147
    return 0;
2148
}
2149

    
2150
int ff_h264_get_slice_type(const H264Context *h)
2151
{
2152
    switch (h->slice_type) {
2153
    case FF_P_TYPE:  return 0;
2154
    case FF_B_TYPE:  return 1;
2155
    case FF_I_TYPE:  return 2;
2156
    case FF_SP_TYPE: return 3;
2157
    case FF_SI_TYPE: return 4;
2158
    default:         return -1;
2159
    }
2160
}
2161

    
2162
static void loop_filter(H264Context *h){
2163
    MpegEncContext * const s = &h->s;
2164
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2165
    int linesize, uvlinesize, mb_x, mb_y;
2166
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2167
    const int old_slice_type= h->slice_type;
2168

    
2169
    if(h->deblocking_filter) {
2170
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2171
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2172
                int list, mb_xy, mb_type;
2173
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2174
                h->slice_num= h->slice_table[mb_xy];
2175
                mb_type= s->current_picture.mb_type[mb_xy];
2176
                h->list_count= h->list_counts[mb_xy];
2177

    
2178
                if(FRAME_MBAFF)
2179
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2180

    
2181
                s->mb_x= mb_x;
2182
                s->mb_y= mb_y;
2183
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2184
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2185
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2186
                    //FIXME simplify above
2187

    
2188
                if (MB_FIELD) {
2189
                    linesize   = h->mb_linesize   = s->linesize * 2;
2190
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2191
                    if(mb_y&1){ //FIXME move out of this function?
2192
                        dest_y -= s->linesize*15;
2193
                        dest_cb-= s->uvlinesize*7;
2194
                        dest_cr-= s->uvlinesize*7;
2195
                    }
2196
                } else {
2197
                    linesize   = h->mb_linesize   = s->linesize;
2198
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2199
                }
2200
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2201
                if(fill_filter_caches(h, mb_type) < 0)
2202
                    continue;
2203
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2204
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2205

    
2206
                if (FRAME_MBAFF) {
2207
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2208
                } else {
2209
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2210
                }
2211
            }
2212
        }
2213
    }
2214
    h->slice_type= old_slice_type;
2215
    s->mb_x= 0;
2216
    s->mb_y= end_mb_y - FRAME_MBAFF;
2217
}
2218

    
2219
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2220
    H264Context *h = *(void**)arg;
2221
    MpegEncContext * const s = &h->s;
2222
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2223

    
2224
    s->mb_skip_run= -1;
2225

    
2226
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2227
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2228

    
2229
    if( h->pps.cabac ) {
2230
        /* realign */
2231
        align_get_bits( &s->gb );
2232

    
2233
        /* init cabac */
2234
        ff_init_cabac_states( &h->cabac);
2235
        ff_init_cabac_decoder( &h->cabac,
2236
                               s->gb.buffer + get_bits_count(&s->gb)/8,
2237
                               (get_bits_left(&s->gb) + 7)/8);
2238

    
2239
        ff_h264_init_cabac_states(h);
2240

    
2241
        for(;;){
2242
//START_TIMER
2243
            int ret = ff_h264_decode_mb_cabac(h);
2244
            int eos;
2245
//STOP_TIMER("decode_mb_cabac")
2246

    
2247
            if(ret>=0) ff_h264_hl_decode_mb(h);
2248

    
2249
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2250
                s->mb_y++;
2251

    
2252
                ret = ff_h264_decode_mb_cabac(h);
2253

    
2254
                if(ret>=0) ff_h264_hl_decode_mb(h);
2255
                s->mb_y--;
2256
            }
2257
            eos = get_cabac_terminate( &h->cabac );
2258

    
2259
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2260
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d, bytestream (%td)\n", s->mb_x, s->mb_y, h->cabac.bytestream_end - h->cabac.bytestream);
2261
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2262
                return -1;
2263
            }
2264

    
2265
            if( ++s->mb_x >= s->mb_width ) {
2266
                s->mb_x = 0;
2267
                loop_filter(h);
2268
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2269
                ++s->mb_y;
2270
                if(FIELD_OR_MBAFF_PICTURE) {
2271
                    ++s->mb_y;
2272
                }
2273
            }
2274

    
2275
            if( eos || s->mb_y >= s->mb_height ) {
2276
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2277
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2278
                return 0;
2279
            }
2280
        }
2281

    
2282
    } else {
2283
        for(;;){
2284
            int ret = ff_h264_decode_mb_cavlc(h);
2285

    
2286
            if(ret>=0) ff_h264_hl_decode_mb(h);
2287

    
2288
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2289
                s->mb_y++;
2290
                ret = ff_h264_decode_mb_cavlc(h);
2291

    
2292
                if(ret>=0) ff_h264_hl_decode_mb(h);
2293
                s->mb_y--;
2294
            }
2295

    
2296
            if(ret<0){
2297
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2298
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2299

    
2300
                return -1;
2301
            }
2302

    
2303
            if(++s->mb_x >= s->mb_width){
2304
                s->mb_x=0;
2305
                loop_filter(h);
2306
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2307
                ++s->mb_y;
2308
                if(FIELD_OR_MBAFF_PICTURE) {
2309
                    ++s->mb_y;
2310
                }
2311
                if(s->mb_y >= s->mb_height){
2312
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2313

    
2314
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2315
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2316

    
2317
                        return 0;
2318
                    }else{
2319
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2320

    
2321
                        return -1;
2322
                    }
2323
                }
2324
            }
2325

    
2326
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2327
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2328
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2329
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2330

    
2331
                    return 0;
2332
                }else{
2333
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2334

    
2335
                    return -1;
2336
                }
2337
            }
2338
        }
2339
    }
2340

    
2341
#if 0
2342
    for(;s->mb_y < s->mb_height; s->mb_y++){
2343
        for(;s->mb_x < s->mb_width; s->mb_x++){
2344
            int ret= decode_mb(h);
2345

2346
            ff_h264_hl_decode_mb(h);
2347

2348
            if(ret<0){
2349
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2350
                ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2351

2352
                return -1;
2353
            }
2354

2355
            if(++s->mb_x >= s->mb_width){
2356
                s->mb_x=0;
2357
                if(++s->mb_y >= s->mb_height){
2358
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
2359
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2360

2361
                        return 0;
2362
                    }else{
2363
                        ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2364

2365
                        return -1;
2366
                    }
2367
                }
2368
            }
2369

2370
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2371
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
2372
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
2373

2374
                    return 0;
2375
                }else{
2376
                    ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2377

2378
                    return -1;
2379
                }
2380
            }
2381
        }
2382
        s->mb_x=0;
2383
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
2384
    }
2385
#endif
2386
    return -1; //not reached
2387
}
2388

    
2389
/**
2390
 * Call decode_slice() for each context.
2391
 *
2392
 * @param h h264 master context
2393
 * @param context_count number of contexts to execute
2394
 */
2395
static void execute_decode_slices(H264Context *h, int context_count){
2396
    MpegEncContext * const s = &h->s;
2397
    AVCodecContext * const avctx= s->avctx;
2398
    H264Context *hx;
2399
    int i;
2400

    
2401
    if (s->avctx->hwaccel)
2402
        return;
2403
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2404
        return;
2405
    if(context_count == 1) {
2406
        decode_slice(avctx, &h);
2407
    } else {
2408
        for(i = 1; i < context_count; i++) {
2409
            hx = h->thread_context[i];
2410
            hx->s.error_recognition = avctx->error_recognition;
2411
            hx->s.error_count = 0;
2412
        }
2413

    
2414
        avctx->execute(avctx, (void *)decode_slice,
2415
                       h->thread_context, NULL, context_count, sizeof(void*));
2416

    
2417
        /* pull back stuff from slices to master context */
2418
        hx = h->thread_context[context_count - 1];
2419
        s->mb_x = hx->s.mb_x;
2420
        s->mb_y = hx->s.mb_y;
2421
        s->dropable = hx->s.dropable;
2422
        s->picture_structure = hx->s.picture_structure;
2423
        for(i = 1; i < context_count; i++)
2424
            h->s.error_count += h->thread_context[i]->s.error_count;
2425
    }
2426
}
2427

    
2428

    
2429
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2430
    MpegEncContext * const s = &h->s;
2431
    AVCodecContext * const avctx= s->avctx;
2432
    int buf_index=0;
2433
    H264Context *hx; ///< thread context
2434
    int context_count = 0;
2435
    int next_avc= h->is_avc ? 0 : buf_size;
2436

    
2437
    h->max_contexts = avctx->thread_count;
2438
#if 0
2439
    int i;
2440
    for(i=0; i<50; i++){
2441
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2442
    }
2443
#endif
2444
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2445
        h->current_slice = 0;
2446
        if (!s->first_field)
2447
            s->current_picture_ptr= NULL;
2448
        ff_h264_reset_sei(h);
2449
    }
2450

    
2451
    for(;;){
2452
        int consumed;
2453
        int dst_length;
2454
        int bit_length;
2455
        const uint8_t *ptr;
2456
        int i, nalsize = 0;
2457
        int err;
2458

    
2459
        if(buf_index >= next_avc) {
2460
            if(buf_index >= buf_size) break;
2461
            nalsize = 0;
2462
            for(i = 0; i < h->nal_length_size; i++)
2463
                nalsize = (nalsize << 8) | buf[buf_index++];
2464
            if(nalsize <= 1 || nalsize > buf_size - buf_index){
2465
                if(nalsize == 1){
2466
                    buf_index++;
2467
                    continue;
2468
                }else{
2469
                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2470
                    break;
2471
                }
2472
            }
2473
            next_avc= buf_index + nalsize;
2474
        } else {
2475
            // start code prefix search
2476
            for(; buf_index + 3 < next_avc; buf_index++){
2477
                // This should always succeed in the first iteration.
2478
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2479
                    break;
2480
            }
2481

    
2482
            if(buf_index+3 >= buf_size) break;
2483

    
2484
            buf_index+=3;
2485
            if(buf_index >= next_avc) continue;
2486
        }
2487

    
2488
        hx = h->thread_context[context_count];
2489

    
2490
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2491
        if (ptr==NULL || dst_length < 0){
2492
            return -1;
2493
        }
2494
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
2495
            dst_length--;
2496
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2497

    
2498
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
2499
            av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
2500
        }
2501

    
2502
        if (h->is_avc && (nalsize != consumed) && nalsize){
2503
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2504
        }
2505

    
2506
        buf_index += consumed;
2507

    
2508
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2509
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2510
            continue;
2511

    
2512
      again:
2513
        err = 0;
2514
        switch(hx->nal_unit_type){
2515
        case NAL_IDR_SLICE:
2516
            if (h->nal_unit_type != NAL_IDR_SLICE) {
2517
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2518
                return -1;
2519
            }
2520
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
2521
        case NAL_SLICE:
2522
            init_get_bits(&hx->s.gb, ptr, bit_length);
2523
            hx->intra_gb_ptr=
2524
            hx->inter_gb_ptr= &hx->s.gb;
2525
            hx->s.data_partitioning = 0;
2526

    
2527
            if((err = decode_slice_header(hx, h)))
2528
               break;
2529

    
2530
            if (s->avctx->hwaccel && h->current_slice == 1) {
2531
                if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2532
                    return -1;
2533
            }
2534

    
2535
            s->current_picture_ptr->key_frame |=
2536
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
2537
                    (h->sei_recovery_frame_cnt >= 0);
2538
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2539
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2540
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2541
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2542
               && avctx->skip_frame < AVDISCARD_ALL){
2543
                if(avctx->hwaccel) {
2544
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2545
                        return -1;
2546
                }else
2547
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2548
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2549
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2550
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2551
                }else
2552
                    context_count++;
2553
            }
2554
            break;
2555
        case NAL_DPA:
2556
            init_get_bits(&hx->s.gb, ptr, bit_length);
2557
            hx->intra_gb_ptr=
2558
            hx->inter_gb_ptr= NULL;
2559

    
2560
            if ((err = decode_slice_header(hx, h)) < 0)
2561
                break;
2562

    
2563
            hx->s.data_partitioning = 1;
2564

    
2565
            break;
2566
        case NAL_DPB:
2567
            init_get_bits(&hx->intra_gb, ptr, bit_length);
2568
            hx->intra_gb_ptr= &hx->intra_gb;
2569
            break;
2570
        case NAL_DPC:
2571
            init_get_bits(&hx->inter_gb, ptr, bit_length);
2572
            hx->inter_gb_ptr= &hx->inter_gb;
2573

    
2574
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2575
               && s->context_initialized
2576
               && s->hurry_up < 5
2577
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2578
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2579
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2580
               && avctx->skip_frame < AVDISCARD_ALL)
2581
                context_count++;
2582
            break;
2583
        case NAL_SEI:
2584
            init_get_bits(&s->gb, ptr, bit_length);
2585
            ff_h264_decode_sei(h);
2586
            break;
2587
        case NAL_SPS:
2588
            init_get_bits(&s->gb, ptr, bit_length);
2589
            ff_h264_decode_seq_parameter_set(h);
2590

    
2591
            if(s->flags& CODEC_FLAG_LOW_DELAY)
2592
                s->low_delay=1;
2593

    
2594
            if(avctx->has_b_frames < 2)
2595
                avctx->has_b_frames= !s->low_delay;
2596
            break;
2597
        case NAL_PPS:
2598
            init_get_bits(&s->gb, ptr, bit_length);
2599

    
2600
            ff_h264_decode_picture_parameter_set(h, bit_length);
2601

    
2602
            break;
2603
        case NAL_AUD:
2604
        case NAL_END_SEQUENCE:
2605
        case NAL_END_STREAM:
2606
        case NAL_FILLER_DATA:
2607
        case NAL_SPS_EXT:
2608
        case NAL_AUXILIARY_SLICE:
2609
            break;
2610
        default:
2611
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2612
        }
2613

    
2614
        if(context_count == h->max_contexts) {
2615
            execute_decode_slices(h, context_count);
2616
            context_count = 0;
2617
        }
2618

    
2619
        if (err < 0)
2620
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2621
        else if(err == 1) {
2622
            /* Slice could not be decoded in parallel mode, copy down
2623
             * NAL unit stuff to context 0 and restart. Note that
2624
             * rbsp_buffer is not transferred, but since we no longer
2625
             * run in parallel mode this should not be an issue. */
2626
            h->nal_unit_type = hx->nal_unit_type;
2627
            h->nal_ref_idc   = hx->nal_ref_idc;
2628
            hx = h;
2629
            goto again;
2630
        }
2631
    }
2632
    if(context_count)
2633
        execute_decode_slices(h, context_count);
2634
    return buf_index;
2635
}
2636

    
2637
/**
2638
 * returns the number of bytes consumed for building the current frame
2639
 */
2640
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2641
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2642
        if(pos+10>buf_size) pos=buf_size; // oops ;)
2643

    
2644
        return pos;
2645
}
2646

    
2647
static int decode_frame(AVCodecContext *avctx,
2648
                             void *data, int *data_size,
2649
                             AVPacket *avpkt)
2650
{
2651
    const uint8_t *buf = avpkt->data;
2652
    int buf_size = avpkt->size;
2653
    H264Context *h = avctx->priv_data;
2654
    MpegEncContext *s = &h->s;
2655
    AVFrame *pict = data;
2656
    int buf_index;
2657

    
2658
    s->flags= avctx->flags;
2659
    s->flags2= avctx->flags2;
2660

    
2661
   /* end of stream, output what is still in the buffers */
2662
    if (buf_size == 0) {
2663
        Picture *out;
2664
        int i, out_idx;
2665

    
2666
//FIXME factorize this with the output code below
2667
        out = h->delayed_pic[0];
2668
        out_idx = 0;
2669
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2670
            if(h->delayed_pic[i]->poc < out->poc){
2671
                out = h->delayed_pic[i];
2672
                out_idx = i;
2673
            }
2674

    
2675
        for(i=out_idx; h->delayed_pic[i]; i++)
2676
            h->delayed_pic[i] = h->delayed_pic[i+1];
2677

    
2678
        if(out){
2679
            *data_size = sizeof(AVFrame);
2680
            *pict= *(AVFrame*)out;
2681
        }
2682

    
2683
        return 0;
2684
    }
2685

    
2686
    if(h->is_avc && !h->got_avcC) {
2687
        int i, cnt, nalsize;
2688
        unsigned char *p = avctx->extradata;
2689
        if(avctx->extradata_size < 7) {
2690
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
2691
            return -1;
2692
        }
2693
        if(*p != 1) {
2694
            av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
2695
            return -1;
2696
        }
2697
        /* sps and pps in the avcC always have length coded with 2 bytes,
2698
           so put a fake nal_length_size = 2 while parsing them */
2699
        h->nal_length_size = 2;
2700
        // Decode sps from avcC
2701
        cnt = *(p+5) & 0x1f; // Number of sps
2702
        p += 6;
2703
        for (i = 0; i < cnt; i++) {
2704
            nalsize = AV_RB16(p) + 2;
2705
            if(decode_nal_units(h, p, nalsize) < 0) {
2706
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
2707
                return -1;
2708
            }
2709
            p += nalsize;
2710
        }
2711
        // Decode pps from avcC
2712
        cnt = *(p++); // Number of pps
2713
        for (i = 0; i < cnt; i++) {
2714
            nalsize = AV_RB16(p) + 2;
2715
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
2716
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
2717
                return -1;
2718
            }
2719
            p += nalsize;
2720
        }
2721
        // Now store right nal length size, that will be use to parse all other nals
2722
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
2723
        // Do not reparse avcC
2724
        h->got_avcC = 1;
2725
    }
2726

    
2727
    if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
2728
        if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
2729
            return -1;
2730
        h->got_avcC = 1;
2731
    }
2732

    
2733
    buf_index=decode_nal_units(h, buf, buf_size);
2734
    if(buf_index < 0)
2735
        return -1;
2736

    
2737
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2738
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2739
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2740
        return -1;
2741
    }
2742

    
2743
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2744
        Picture *out = s->current_picture_ptr;
2745
        Picture *cur = s->current_picture_ptr;
2746
        int i, pics, out_of_order, out_idx;
2747

    
2748
        field_end(h);
2749

    
2750
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2751
            /* Wait for second field. */
2752
            *data_size = 0;
2753

    
2754
        } else {
2755
            cur->interlaced_frame = 0;
2756
            cur->repeat_pict = 0;
2757

    
2758
            /* Signal interlacing information externally. */
2759
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
2760

    
2761
            if(h->sps.pic_struct_present_flag){
2762
                switch (h->sei_pic_struct)
2763
                {
2764
                case SEI_PIC_STRUCT_FRAME:
2765
                    break;
2766
                case SEI_PIC_STRUCT_TOP_FIELD:
2767
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
2768
                    cur->interlaced_frame = 1;
2769
                    break;
2770
                case SEI_PIC_STRUCT_TOP_BOTTOM:
2771
                case SEI_PIC_STRUCT_BOTTOM_TOP:
2772
                    if (FIELD_OR_MBAFF_PICTURE)
2773
                        cur->interlaced_frame = 1;
2774
                    else
2775
                        // try to flag soft telecine progressive
2776
                        cur->interlaced_frame = h->prev_interlaced_frame;
2777
                    break;
2778
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2779
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2780
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
2781
                    // From these hints, let the applications decide if they apply deinterlacing.
2782
                    cur->repeat_pict = 1;
2783
                    break;
2784
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
2785
                    // Force progressive here, as doubling interlaced frame is a bad idea.
2786
                    cur->repeat_pict = 2;
2787
                    break;
2788
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
2789
                    cur->repeat_pict = 4;
2790
                    break;
2791
                }
2792

    
2793
                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2794
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2795
            }else{
2796
                /* Derive interlacing flag from used decoding process. */
2797
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2798
            }
2799
            h->prev_interlaced_frame = cur->interlaced_frame;
2800

    
2801
            if (cur->field_poc[0] != cur->field_poc[1]){
2802
                /* Derive top_field_first from field pocs. */
2803
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2804
            }else{
2805
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2806
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2807
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2808
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2809
                        cur->top_field_first = 1;
2810
                    else
2811
                        cur->top_field_first = 0;
2812
                }else{
2813
                    /* Most likely progressive */
2814
                    cur->top_field_first = 0;
2815
                }
2816
            }
2817

    
2818
        //FIXME do something with unavailable reference frames
2819

    
2820
            /* Sort B-frames into display order */
2821

    
2822
            if(h->sps.bitstream_restriction_flag
2823
               && s->avctx->has_b_frames < h->sps.num_reorder_frames){
2824
                s->avctx->has_b_frames = h->sps.num_reorder_frames;
2825
                s->low_delay = 0;
2826
            }
2827

    
2828
            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2829
               && !h->sps.bitstream_restriction_flag){
2830
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2831
                s->low_delay= 0;
2832
            }
2833

    
2834
            pics = 0;
2835
            while(h->delayed_pic[pics]) pics++;
2836

    
2837
            assert(pics <= MAX_DELAYED_PIC_COUNT);
2838

    
2839
            h->delayed_pic[pics++] = cur;
2840
            if(cur->reference == 0)
2841
                cur->reference = DELAYED_PIC_REF;
2842

    
2843
            out = h->delayed_pic[0];
2844
            out_idx = 0;
2845
            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2846
                if(h->delayed_pic[i]->poc < out->poc){
2847
                    out = h->delayed_pic[i];
2848
                    out_idx = i;
2849
                }
2850
            if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2851
                h->outputed_poc= INT_MIN;
2852
            out_of_order = out->poc < h->outputed_poc;
2853

    
2854
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2855
                { }
2856
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2857
               || (s->low_delay &&
2858
                ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2859
                 || cur->pict_type == FF_B_TYPE)))
2860
            {
2861
                s->low_delay = 0;
2862
                s->avctx->has_b_frames++;
2863
            }
2864

    
2865
            if(out_of_order || pics > s->avctx->has_b_frames){
2866
                out->reference &= ~DELAYED_PIC_REF;
2867
                for(i=out_idx; h->delayed_pic[i]; i++)
2868
                    h->delayed_pic[i] = h->delayed_pic[i+1];
2869
            }
2870
            if(!out_of_order && pics > s->avctx->has_b_frames){
2871
                *data_size = sizeof(AVFrame);
2872

    
2873
                if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2874
                    h->outputed_poc = INT_MIN;
2875
                } else
2876
                    h->outputed_poc = out->poc;
2877
                *pict= *(AVFrame*)out;
2878
            }else{
2879
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2880
            }
2881
        }
2882
    }
2883

    
2884
    assert(pict->data[0] || !*data_size);
2885
    ff_print_debug_info(s, pict);
2886
//printf("out %d\n", (int)pict->data[0]);
2887

    
2888
    return get_consumed_bytes(s, buf_index, buf_size);
2889
}
2890
#if 0
2891
static inline void fill_mb_avail(H264Context *h){
2892
    MpegEncContext * const s = &h->s;
2893
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2894

2895
    if(s->mb_y){
2896
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2897
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
2898
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2899
    }else{
2900
        h->mb_avail[0]=
2901
        h->mb_avail[1]=
2902
        h->mb_avail[2]= 0;
2903
    }
2904
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2905
    h->mb_avail[4]= 1; //FIXME move out
2906
    h->mb_avail[5]= 0; //FIXME move out
2907
}
2908
#endif
2909

    
2910
#ifdef TEST
2911
#undef printf
2912
#undef random
2913
#define COUNT 8000
2914
#define SIZE (COUNT*40)
2915
int main(void){
2916
    int i;
2917
    uint8_t temp[SIZE];
2918
    PutBitContext pb;
2919
    GetBitContext gb;
2920
//    int int_temp[10000];
2921
    DSPContext dsp;
2922
    AVCodecContext avctx;
2923

    
2924
    dsputil_init(&dsp, &avctx);
2925

    
2926
    init_put_bits(&pb, temp, SIZE);
2927
    printf("testing unsigned exp golomb\n");
2928
    for(i=0; i<COUNT; i++){
2929
        START_TIMER
2930
        set_ue_golomb(&pb, i);
2931
        STOP_TIMER("set_ue_golomb");
2932
    }
2933
    flush_put_bits(&pb);
2934

    
2935
    init_get_bits(&gb, temp, 8*SIZE);
2936
    for(i=0; i<COUNT; i++){
2937
        int j, s;
2938

    
2939
        s= show_bits(&gb, 24);
2940

    
2941
        START_TIMER
2942
        j= get_ue_golomb(&gb);
2943
        if(j != i){
2944
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2945
//            return -1;
2946
        }
2947
        STOP_TIMER("get_ue_golomb");
2948
    }
2949

    
2950

    
2951
    init_put_bits(&pb, temp, SIZE);
2952
    printf("testing signed exp golomb\n");
2953
    for(i=0; i<COUNT; i++){
2954
        START_TIMER
2955
        set_se_golomb(&pb, i - COUNT/2);
2956
        STOP_TIMER("set_se_golomb");
2957
    }
2958
    flush_put_bits(&pb);
2959

    
2960
    init_get_bits(&gb, temp, 8*SIZE);
2961
    for(i=0; i<COUNT; i++){
2962
        int j, s;
2963

    
2964
        s= show_bits(&gb, 24);
2965

    
2966
        START_TIMER
2967
        j= get_se_golomb(&gb);
2968
        if(j != i - COUNT/2){
2969
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2970
//            return -1;
2971
        }
2972
        STOP_TIMER("get_se_golomb");
2973
    }
2974

    
2975
#if 0
2976
    printf("testing 4x4 (I)DCT\n");
2977

2978
    DCTELEM block[16];
2979
    uint8_t src[16], ref[16];
2980
    uint64_t error= 0, max_error=0;
2981

2982
    for(i=0; i<COUNT; i++){
2983
        int j;
2984
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2985
        for(j=0; j<16; j++){
2986
            ref[j]= random()%255;
2987
            src[j]= random()%255;
2988
        }
2989

2990
        h264_diff_dct_c(block, src, ref, 4);
2991

2992
        //normalize
2993
        for(j=0; j<16; j++){
2994
//            printf("%d ", block[j]);
2995
            block[j]= block[j]*4;
2996
            if(j&1) block[j]= (block[j]*4 + 2)/5;
2997
            if(j&4) block[j]= (block[j]*4 + 2)/5;
2998
        }
2999
//        printf("\n");
3000

3001
        s->dsp.h264_idct_add(ref, block, 4);
3002
/*        for(j=0; j<16; j++){
3003
            printf("%d ", ref[j]);
3004
        }
3005
        printf("\n");*/
3006

3007
        for(j=0; j<16; j++){
3008
            int diff= FFABS(src[j] - ref[j]);
3009

3010
            error+= diff*diff;
3011
            max_error= FFMAX(max_error, diff);
3012
        }
3013
    }
3014
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3015
    printf("testing quantizer\n");
3016
    for(qp=0; qp<52; qp++){
3017
        for(i=0; i<16; i++)
3018
            src1_block[i]= src2_block[i]= random()%255;
3019

3020
    }
3021
    printf("Testing NAL layer\n");
3022

3023
    uint8_t bitstream[COUNT];
3024
    uint8_t nal[COUNT*2];
3025
    H264Context h;
3026
    memset(&h, 0, sizeof(H264Context));
3027

3028
    for(i=0; i<COUNT; i++){
3029
        int zeros= i;
3030
        int nal_length;
3031
        int consumed;
3032
        int out_length;
3033
        uint8_t *out;
3034
        int j;
3035

3036
        for(j=0; j<COUNT; j++){
3037
            bitstream[j]= (random() % 255) + 1;
3038
        }
3039

3040
        for(j=0; j<zeros; j++){
3041
            int pos= random() % COUNT;
3042
            while(bitstream[pos] == 0){
3043
                pos++;
3044
                pos %= COUNT;
3045
            }
3046
            bitstream[pos]=0;
3047
        }
3048

3049
        START_TIMER
3050

3051
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3052
        if(nal_length<0){
3053
            printf("encoding failed\n");
3054
            return -1;
3055
        }
3056

3057
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3058

3059
        STOP_TIMER("NAL")
3060

3061
        if(out_length != COUNT){
3062
            printf("incorrect length %d %d\n", out_length, COUNT);
3063
            return -1;
3064
        }
3065

3066
        if(consumed != nal_length){
3067
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3068
            return -1;
3069
        }
3070

3071
        if(memcmp(bitstream, out, COUNT)){
3072
            printf("mismatch\n");
3073
            return -1;
3074
        }
3075
    }
3076
#endif
3077

    
3078
    printf("Testing RBSP\n");
3079

    
3080

    
3081
    return 0;
3082
}
3083
#endif /* TEST */
3084

    
3085

    
3086
av_cold void ff_h264_free_context(H264Context *h)
3087
{
3088
    int i;
3089

    
3090
    free_tables(h); //FIXME cleanup init stuff perhaps
3091

    
3092
    for(i = 0; i < MAX_SPS_COUNT; i++)
3093
        av_freep(h->sps_buffers + i);
3094

    
3095
    for(i = 0; i < MAX_PPS_COUNT; i++)
3096
        av_freep(h->pps_buffers + i);
3097
}
3098

    
3099
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3100
{
3101
    H264Context *h = avctx->priv_data;
3102
    MpegEncContext *s = &h->s;
3103

    
3104
    ff_h264_free_context(h);
3105

    
3106
    MPV_common_end(s);
3107

    
3108
//    memset(h, 0, sizeof(H264Context));
3109

    
3110
    return 0;
3111
}
3112

    
3113

    
3114
AVCodec h264_decoder = {
3115
    "h264",
3116
    CODEC_TYPE_VIDEO,
3117
    CODEC_ID_H264,
3118
    sizeof(H264Context),
3119
    ff_h264_decode_init,
3120
    NULL,
3121
    ff_h264_decode_end,
3122
    decode_frame,
3123
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3124
    .flush= flush_dpb,
3125
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3126
    .pix_fmts= ff_hwaccel_pixfmt_list_420,
3127
};
3128

    
3129
#if CONFIG_H264_VDPAU_DECODER
3130
AVCodec h264_vdpau_decoder = {
3131
    "h264_vdpau",
3132
    CODEC_TYPE_VIDEO,
3133
    CODEC_ID_H264,
3134
    sizeof(H264Context),
3135
    ff_h264_decode_init,
3136
    NULL,
3137
    ff_h264_decode_end,
3138
    decode_frame,
3139
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3140
    .flush= flush_dpb,
3141
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3142
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3143
};
3144
#endif