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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.
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 *
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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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 const uint8_t rem6[52]={
47
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,
48
};
49

    
50
static const uint8_t div6[52]={
51
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,
52
};
53

    
54
void ff_h264_write_back_intra_pred_mode(H264Context *h){
55
    int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
56

    
57
    AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
58
    mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
59
    mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
60
    mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
61
}
62

    
63
/**
64
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
65
 */
66
int ff_h264_check_intra4x4_pred_mode(H264Context *h){
67
    MpegEncContext * const s = &h->s;
68
    static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
69
    static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
70
    int i;
71

    
72
    if(!(h->top_samples_available&0x8000)){
73
        for(i=0; i<4; i++){
74
            int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
75
            if(status<0){
76
                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);
77
                return -1;
78
            } else if(status){
79
                h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
80
            }
81
        }
82
    }
83

    
84
    if((h->left_samples_available&0x8888)!=0x8888){
85
        static const int mask[4]={0x8000,0x2000,0x80,0x20};
86
        for(i=0; i<4; i++){
87
            if(!(h->left_samples_available&mask[i])){
88
                int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
89
                if(status<0){
90
                    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);
91
                    return -1;
92
                } else if(status){
93
                    h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
94
                }
95
            }
96
        }
97
    }
98

    
99
    return 0;
100
} //FIXME cleanup like ff_h264_check_intra_pred_mode
101

    
102
/**
103
 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
104
 */
105
int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
106
    MpegEncContext * const s = &h->s;
107
    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
108
    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
109

    
110
    if(mode > 6U) {
111
        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);
112
        return -1;
113
    }
114

    
115
    if(!(h->top_samples_available&0x8000)){
116
        mode= top[ mode ];
117
        if(mode<0){
118
            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);
119
            return -1;
120
        }
121
    }
122

    
123
    if((h->left_samples_available&0x8080) != 0x8080){
124
        mode= left[ mode ];
125
        if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
126
            mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
127
        }
128
        if(mode<0){
129
            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);
130
            return -1;
131
        }
132
    }
133

    
134
    return mode;
135
}
136

    
137
const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
138
    int i, si, di;
139
    uint8_t *dst;
140
    int bufidx;
141

    
142
//    src[0]&0x80;                //forbidden bit
143
    h->nal_ref_idc= src[0]>>5;
144
    h->nal_unit_type= src[0]&0x1F;
145

    
146
    src++; length--;
147
#if 0
148
    for(i=0; i<length; i++)
149
        printf("%2X ", src[i]);
150
#endif
151

    
152
#if HAVE_FAST_UNALIGNED
153
# if HAVE_FAST_64BIT
154
#   define RS 7
155
    for(i=0; i+1<length; i+=9){
156
        if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
157
# else
158
#   define RS 3
159
    for(i=0; i+1<length; i+=5){
160
        if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
161
# endif
162
            continue;
163
        if(i>0 && !src[i]) i--;
164
        while(src[i]) i++;
165
#else
166
#   define RS 0
167
    for(i=0; i+1<length; i+=2){
168
        if(src[i]) continue;
169
        if(i>0 && src[i-1]==0) i--;
170
#endif
171
        if(i+2<length && src[i+1]==0 && src[i+2]<=3){
172
            if(src[i+2]!=3){
173
                /* startcode, so we must be past the end */
174
                length=i;
175
            }
176
            break;
177
        }
178
        i-= RS;
179
    }
180

    
181
    if(i>=length-1){ //no escaped 0
182
        *dst_length= length;
183
        *consumed= length+1; //+1 for the header
184
        return src;
185
    }
186

    
187
    bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
188
    av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
189
    dst= h->rbsp_buffer[bufidx];
190

    
191
    if (dst == NULL){
192
        return NULL;
193
    }
194

    
195
//printf("decoding esc\n");
196
    memcpy(dst, src, i);
197
    si=di=i;
198
    while(si+2<length){
199
        //remove escapes (very rare 1:2^22)
200
        if(src[si+2]>3){
201
            dst[di++]= src[si++];
202
            dst[di++]= src[si++];
203
        }else if(src[si]==0 && src[si+1]==0){
204
            if(src[si+2]==3){ //escape
205
                dst[di++]= 0;
206
                dst[di++]= 0;
207
                si+=3;
208
                continue;
209
            }else //next start code
210
                goto nsc;
211
        }
212

    
213
        dst[di++]= src[si++];
214
    }
215
    while(si<length)
216
        dst[di++]= src[si++];
217
nsc:
218

    
219
    memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
220

    
221
    *dst_length= di;
222
    *consumed= si + 1;//+1 for the header
223
//FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
224
    return dst;
225
}
226

    
227
int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
228
    int v= *src;
229
    int r;
230

    
231
    tprintf(h->s.avctx, "rbsp trailing %X\n", v);
232

    
233
    for(r=1; r<9; r++){
234
        if(v&1) return r;
235
        v>>=1;
236
    }
237
    return 0;
238
}
239

    
240
/**
241
 * IDCT transforms the 16 dc values and dequantizes them.
242
 * @param qp quantization parameter
243
 */
244
static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
245
#define stride 16
246
    int i;
247
    int temp[16]; //FIXME check if this is a good idea
248
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
249
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
250

    
251
//memset(block, 64, 2*256);
252
//return;
253
    for(i=0; i<4; i++){
254
        const int offset= y_offset[i];
255
        const int z0= block[offset+stride*0] + block[offset+stride*4];
256
        const int z1= block[offset+stride*0] - block[offset+stride*4];
257
        const int z2= block[offset+stride*1] - block[offset+stride*5];
258
        const int z3= block[offset+stride*1] + block[offset+stride*5];
259

    
260
        temp[4*i+0]= z0+z3;
261
        temp[4*i+1]= z1+z2;
262
        temp[4*i+2]= z1-z2;
263
        temp[4*i+3]= z0-z3;
264
    }
265

    
266
    for(i=0; i<4; i++){
267
        const int offset= x_offset[i];
268
        const int z0= temp[4*0+i] + temp[4*2+i];
269
        const int z1= temp[4*0+i] - temp[4*2+i];
270
        const int z2= temp[4*1+i] - temp[4*3+i];
271
        const int z3= temp[4*1+i] + temp[4*3+i];
272

    
273
        block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
274
        block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
275
        block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
276
        block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
277
    }
278
}
279

    
280
#if 0
281
/**
282
 * DCT transforms the 16 dc values.
283
 * @param qp quantization parameter ??? FIXME
284
 */
285
static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
286
//    const int qmul= dequant_coeff[qp][0];
287
    int i;
288
    int temp[16]; //FIXME check if this is a good idea
289
    static const int x_offset[4]={0, 1*stride, 4* stride,  5*stride};
290
    static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
291

292
    for(i=0; i<4; i++){
293
        const int offset= y_offset[i];
294
        const int z0= block[offset+stride*0] + block[offset+stride*4];
295
        const int z1= block[offset+stride*0] - block[offset+stride*4];
296
        const int z2= block[offset+stride*1] - block[offset+stride*5];
297
        const int z3= block[offset+stride*1] + block[offset+stride*5];
298

299
        temp[4*i+0]= z0+z3;
300
        temp[4*i+1]= z1+z2;
301
        temp[4*i+2]= z1-z2;
302
        temp[4*i+3]= z0-z3;
303
    }
304

305
    for(i=0; i<4; i++){
306
        const int offset= x_offset[i];
307
        const int z0= temp[4*0+i] + temp[4*2+i];
308
        const int z1= temp[4*0+i] - temp[4*2+i];
309
        const int z2= temp[4*1+i] - temp[4*3+i];
310
        const int z3= temp[4*1+i] + temp[4*3+i];
311

312
        block[stride*0 +offset]= (z0 + z3)>>1;
313
        block[stride*2 +offset]= (z1 + z2)>>1;
314
        block[stride*8 +offset]= (z1 - z2)>>1;
315
        block[stride*10+offset]= (z0 - z3)>>1;
316
    }
317
}
318
#endif
319

    
320
#undef xStride
321
#undef stride
322

    
323
static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
324
    const int stride= 16*2;
325
    const int xStride= 16;
326
    int a,b,c,d,e;
327

    
328
    a= block[stride*0 + xStride*0];
329
    b= block[stride*0 + xStride*1];
330
    c= block[stride*1 + xStride*0];
331
    d= block[stride*1 + xStride*1];
332

    
333
    e= a-b;
334
    a= a+b;
335
    b= c-d;
336
    c= c+d;
337

    
338
    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
339
    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
340
    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
341
    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
342
}
343

    
344
#if 0
345
static void chroma_dc_dct_c(DCTELEM *block){
346
    const int stride= 16*2;
347
    const int xStride= 16;
348
    int a,b,c,d,e;
349

350
    a= block[stride*0 + xStride*0];
351
    b= block[stride*0 + xStride*1];
352
    c= block[stride*1 + xStride*0];
353
    d= block[stride*1 + xStride*1];
354

355
    e= a-b;
356
    a= a+b;
357
    b= c-d;
358
    c= c+d;
359

360
    block[stride*0 + xStride*0]= (a+c);
361
    block[stride*0 + xStride*1]= (e+b);
362
    block[stride*1 + xStride*0]= (a-c);
363
    block[stride*1 + xStride*1]= (e-b);
364
}
365
#endif
366

    
367
static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
368
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
369
                           int src_x_offset, int src_y_offset,
370
                           qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
371
    MpegEncContext * const s = &h->s;
372
    const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
373
    int my=       h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
374
    const int luma_xy= (mx&3) + ((my&3)<<2);
375
    uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
376
    uint8_t * src_cb, * src_cr;
377
    int extra_width= h->emu_edge_width;
378
    int extra_height= h->emu_edge_height;
379
    int emu=0;
380
    const int full_mx= mx>>2;
381
    const int full_my= my>>2;
382
    const int pic_width  = 16*s->mb_width;
383
    const int pic_height = 16*s->mb_height >> MB_FIELD;
384

    
385
    if(mx&7) extra_width -= 3;
386
    if(my&7) extra_height -= 3;
387

    
388
    if(   full_mx < 0-extra_width
389
       || full_my < 0-extra_height
390
       || full_mx + 16/*FIXME*/ > pic_width + extra_width
391
       || full_my + 16/*FIXME*/ > pic_height + extra_height){
392
        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);
393
            src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
394
        emu=1;
395
    }
396

    
397
    qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
398
    if(!square){
399
        qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
400
    }
401

    
402
    if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
403

    
404
    if(MB_FIELD){
405
        // chroma offset when predicting from a field of opposite parity
406
        my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
407
        emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
408
    }
409
    src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
410
    src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
411

    
412
    if(emu){
413
        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);
414
            src_cb= s->edge_emu_buffer;
415
    }
416
    chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
417

    
418
    if(emu){
419
        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);
420
            src_cr= s->edge_emu_buffer;
421
    }
422
    chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
423
}
424

    
425
static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
426
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
427
                           int x_offset, int y_offset,
428
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
429
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
430
                           int list0, int list1){
431
    MpegEncContext * const s = &h->s;
432
    qpel_mc_func *qpix_op=  qpix_put;
433
    h264_chroma_mc_func chroma_op= chroma_put;
434

    
435
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
436
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
437
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
438
    x_offset += 8*s->mb_x;
439
    y_offset += 8*(s->mb_y >> MB_FIELD);
440

    
441
    if(list0){
442
        Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
443
        mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
444
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
445
                           qpix_op, chroma_op);
446

    
447
        qpix_op=  qpix_avg;
448
        chroma_op= chroma_avg;
449
    }
450

    
451
    if(list1){
452
        Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
453
        mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
454
                           dest_y, dest_cb, dest_cr, x_offset, y_offset,
455
                           qpix_op, chroma_op);
456
    }
457
}
458

    
459
static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
460
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
461
                           int x_offset, int y_offset,
462
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
463
                           h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
464
                           h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
465
                           int list0, int list1){
466
    MpegEncContext * const s = &h->s;
467

    
468
    dest_y  += 2*x_offset + 2*y_offset*h->  mb_linesize;
469
    dest_cb +=   x_offset +   y_offset*h->mb_uvlinesize;
470
    dest_cr +=   x_offset +   y_offset*h->mb_uvlinesize;
471
    x_offset += 8*s->mb_x;
472
    y_offset += 8*(s->mb_y >> MB_FIELD);
473

    
474
    if(list0 && list1){
475
        /* don't optimize for luma-only case, since B-frames usually
476
         * use implicit weights => chroma too. */
477
        uint8_t *tmp_cb = s->obmc_scratchpad;
478
        uint8_t *tmp_cr = s->obmc_scratchpad + 8;
479
        uint8_t *tmp_y  = s->obmc_scratchpad + 8*h->mb_uvlinesize;
480
        int refn0 = h->ref_cache[0][ scan8[n] ];
481
        int refn1 = h->ref_cache[1][ scan8[n] ];
482

    
483
        mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
484
                    dest_y, dest_cb, dest_cr,
485
                    x_offset, y_offset, qpix_put, chroma_put);
486
        mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
487
                    tmp_y, tmp_cb, tmp_cr,
488
                    x_offset, y_offset, qpix_put, chroma_put);
489

    
490
        if(h->use_weight == 2){
491
            int weight0 = h->implicit_weight[refn0][refn1];
492
            int weight1 = 64 - weight0;
493
            luma_weight_avg(  dest_y,  tmp_y,  h->  mb_linesize, 5, weight0, weight1, 0);
494
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
495
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
496
        }else{
497
            luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
498
                            h->luma_weight[0][refn0][0], h->luma_weight[1][refn1][0],
499
                            h->luma_weight[0][refn0][1] + h->luma_weight[1][refn1][1]);
500
            chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
501
                            h->chroma_weight[0][refn0][0][0], h->chroma_weight[1][refn1][0][0],
502
                            h->chroma_weight[0][refn0][0][1] + h->chroma_weight[1][refn1][0][1]);
503
            chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
504
                            h->chroma_weight[0][refn0][1][0], h->chroma_weight[1][refn1][1][0],
505
                            h->chroma_weight[0][refn0][1][1] + h->chroma_weight[1][refn1][1][1]);
506
        }
507
    }else{
508
        int list = list1 ? 1 : 0;
509
        int refn = h->ref_cache[list][ scan8[n] ];
510
        Picture *ref= &h->ref_list[list][refn];
511
        mc_dir_part(h, ref, n, square, chroma_height, delta, list,
512
                    dest_y, dest_cb, dest_cr, x_offset, y_offset,
513
                    qpix_put, chroma_put);
514

    
515
        luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
516
                       h->luma_weight[list][refn][0], h->luma_weight[list][refn][1]);
517
        if(h->use_weight_chroma){
518
            chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
519
                             h->chroma_weight[list][refn][0][0], h->chroma_weight[list][refn][0][1]);
520
            chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
521
                             h->chroma_weight[list][refn][1][0], h->chroma_weight[list][refn][1][1]);
522
        }
523
    }
524
}
525

    
526
static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
527
                           uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
528
                           int x_offset, int y_offset,
529
                           qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
530
                           qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
531
                           h264_weight_func *weight_op, h264_biweight_func *weight_avg,
532
                           int list0, int list1){
533
    if((h->use_weight==2 && list0 && list1
534
        && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
535
       || h->use_weight==1)
536
        mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
537
                         x_offset, y_offset, qpix_put, chroma_put,
538
                         weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
539
    else
540
        mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
541
                    x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
542
}
543

    
544
static inline void prefetch_motion(H264Context *h, int list){
545
    /* fetch pixels for estimated mv 4 macroblocks ahead
546
     * optimized for 64byte cache lines */
547
    MpegEncContext * const s = &h->s;
548
    const int refn = h->ref_cache[list][scan8[0]];
549
    if(refn >= 0){
550
        const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
551
        const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
552
        uint8_t **src= h->ref_list[list][refn].data;
553
        int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
554
        s->dsp.prefetch(src[0]+off, s->linesize, 4);
555
        off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
556
        s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
557
    }
558
}
559

    
560
static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
561
                      qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
562
                      qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
563
                      h264_weight_func *weight_op, h264_biweight_func *weight_avg){
564
    MpegEncContext * const s = &h->s;
565
    const int mb_xy= h->mb_xy;
566
    const int mb_type= s->current_picture.mb_type[mb_xy];
567

    
568
    assert(IS_INTER(mb_type));
569

    
570
    prefetch_motion(h, 0);
571

    
572
    if(IS_16X16(mb_type)){
573
        mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
574
                qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
575
                weight_op, weight_avg,
576
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
577
    }else if(IS_16X8(mb_type)){
578
        mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
579
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
580
                &weight_op[1], &weight_avg[1],
581
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
582
        mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
583
                qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
584
                &weight_op[1], &weight_avg[1],
585
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
586
    }else if(IS_8X16(mb_type)){
587
        mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
588
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
589
                &weight_op[2], &weight_avg[2],
590
                IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591
        mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
592
                qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
593
                &weight_op[2], &weight_avg[2],
594
                IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
595
    }else{
596
        int i;
597

    
598
        assert(IS_8X8(mb_type));
599

    
600
        for(i=0; i<4; i++){
601
            const int sub_mb_type= h->sub_mb_type[i];
602
            const int n= 4*i;
603
            int x_offset= (i&1)<<2;
604
            int y_offset= (i&2)<<1;
605

    
606
            if(IS_SUB_8X8(sub_mb_type)){
607
                mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
608
                    qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
609
                    &weight_op[3], &weight_avg[3],
610
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
611
            }else if(IS_SUB_8X4(sub_mb_type)){
612
                mc_part(h, n  , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
613
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
614
                    &weight_op[4], &weight_avg[4],
615
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
616
                mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
617
                    qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
618
                    &weight_op[4], &weight_avg[4],
619
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620
            }else if(IS_SUB_4X8(sub_mb_type)){
621
                mc_part(h, n  , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
623
                    &weight_op[5], &weight_avg[5],
624
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625
                mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
626
                    qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
627
                    &weight_op[5], &weight_avg[5],
628
                    IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
629
            }else{
630
                int j;
631
                assert(IS_SUB_4X4(sub_mb_type));
632
                for(j=0; j<4; j++){
633
                    int sub_x_offset= x_offset + 2*(j&1);
634
                    int sub_y_offset= y_offset +   (j&2);
635
                    mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
636
                        qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
637
                        &weight_op[6], &weight_avg[6],
638
                        IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
639
                }
640
            }
641
        }
642
    }
643

    
644
    prefetch_motion(h, 1);
645
}
646

    
647

    
648
static void free_tables(H264Context *h){
649
    int i;
650
    H264Context *hx;
651
    av_freep(&h->intra4x4_pred_mode);
652
    av_freep(&h->chroma_pred_mode_table);
653
    av_freep(&h->cbp_table);
654
    av_freep(&h->mvd_table[0]);
655
    av_freep(&h->mvd_table[1]);
656
    av_freep(&h->direct_table);
657
    av_freep(&h->non_zero_count);
658
    av_freep(&h->slice_table_base);
659
    h->slice_table= NULL;
660
    av_freep(&h->list_counts);
661

    
662
    av_freep(&h->mb2b_xy);
663
    av_freep(&h->mb2br_xy);
664

    
665
    for(i = 0; i < MAX_THREADS; i++) {
666
        hx = h->thread_context[i];
667
        if(!hx) continue;
668
        av_freep(&hx->top_borders[1]);
669
        av_freep(&hx->top_borders[0]);
670
        av_freep(&hx->s.obmc_scratchpad);
671
        av_freep(&hx->rbsp_buffer[1]);
672
        av_freep(&hx->rbsp_buffer[0]);
673
        hx->rbsp_buffer_size[0] = 0;
674
        hx->rbsp_buffer_size[1] = 0;
675
        if (i) av_freep(&h->thread_context[i]);
676
    }
677
}
678

    
679
static void init_dequant8_coeff_table(H264Context *h){
680
    int i,q,x;
681
    const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
682
    h->dequant8_coeff[0] = h->dequant8_buffer[0];
683
    h->dequant8_coeff[1] = h->dequant8_buffer[1];
684

    
685
    for(i=0; i<2; i++ ){
686
        if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
687
            h->dequant8_coeff[1] = h->dequant8_buffer[0];
688
            break;
689
        }
690

    
691
        for(q=0; q<52; q++){
692
            int shift = div6[q];
693
            int idx = rem6[q];
694
            for(x=0; x<64; x++)
695
                h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
696
                    ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
697
                    h->pps.scaling_matrix8[i][x]) << shift;
698
        }
699
    }
700
}
701

    
702
static void init_dequant4_coeff_table(H264Context *h){
703
    int i,j,q,x;
704
    const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
705
    for(i=0; i<6; i++ ){
706
        h->dequant4_coeff[i] = h->dequant4_buffer[i];
707
        for(j=0; j<i; j++){
708
            if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
709
                h->dequant4_coeff[i] = h->dequant4_buffer[j];
710
                break;
711
            }
712
        }
713
        if(j<i)
714
            continue;
715

    
716
        for(q=0; q<52; q++){
717
            int shift = div6[q] + 2;
718
            int idx = rem6[q];
719
            for(x=0; x<16; x++)
720
                h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
721
                    ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
722
                    h->pps.scaling_matrix4[i][x]) << shift;
723
        }
724
    }
725
}
726

    
727
static void init_dequant_tables(H264Context *h){
728
    int i,x;
729
    init_dequant4_coeff_table(h);
730
    if(h->pps.transform_8x8_mode)
731
        init_dequant8_coeff_table(h);
732
    if(h->sps.transform_bypass){
733
        for(i=0; i<6; i++)
734
            for(x=0; x<16; x++)
735
                h->dequant4_coeff[i][0][x] = 1<<6;
736
        if(h->pps.transform_8x8_mode)
737
            for(i=0; i<2; i++)
738
                for(x=0; x<64; x++)
739
                    h->dequant8_coeff[i][0][x] = 1<<6;
740
    }
741
}
742

    
743

    
744
int ff_h264_alloc_tables(H264Context *h){
745
    MpegEncContext * const s = &h->s;
746
    const int big_mb_num= s->mb_stride * (s->mb_height+1);
747
    const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
748
    int x,y;
749

    
750
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8  * sizeof(uint8_t), fail)
751

    
752
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count    , big_mb_num * 32 * sizeof(uint8_t), fail)
753
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base  , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
754
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
755

    
756
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
757
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
758
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
759
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
760
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
761

    
762
    memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride)  * sizeof(*h->slice_table_base));
763
    h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
764

    
765
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy  , big_mb_num * sizeof(uint32_t), fail);
766
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
767
    for(y=0; y<s->mb_height; y++){
768
        for(x=0; x<s->mb_width; x++){
769
            const int mb_xy= x + y*s->mb_stride;
770
            const int b_xy = 4*x + 4*y*h->b_stride;
771

    
772
            h->mb2b_xy [mb_xy]= b_xy;
773
            h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
774
        }
775
    }
776

    
777
    s->obmc_scratchpad = NULL;
778

    
779
    if(!h->dequant4_coeff[0])
780
        init_dequant_tables(h);
781

    
782
    return 0;
783
fail:
784
    free_tables(h);
785
    return -1;
786
}
787

    
788
/**
789
 * Mimic alloc_tables(), but for every context thread.
790
 */
791
static void clone_tables(H264Context *dst, H264Context *src, int i){
792
    MpegEncContext * const s = &src->s;
793
    dst->intra4x4_pred_mode       = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
794
    dst->non_zero_count           = src->non_zero_count;
795
    dst->slice_table              = src->slice_table;
796
    dst->cbp_table                = src->cbp_table;
797
    dst->mb2b_xy                  = src->mb2b_xy;
798
    dst->mb2br_xy                 = src->mb2br_xy;
799
    dst->chroma_pred_mode_table   = src->chroma_pred_mode_table;
800
    dst->mvd_table[0]             = src->mvd_table[0] + i*8*2*s->mb_stride;
801
    dst->mvd_table[1]             = src->mvd_table[1] + i*8*2*s->mb_stride;
802
    dst->direct_table             = src->direct_table;
803
    dst->list_counts              = src->list_counts;
804

    
805
    dst->s.obmc_scratchpad = NULL;
806
    ff_h264_pred_init(&dst->hpc, src->s.codec_id);
807
}
808

    
809
/**
810
 * Init context
811
 * Allocate buffers which are not shared amongst multiple threads.
812
 */
813
static int context_init(H264Context *h){
814
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
815
    FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
816

    
817
    h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
818
    h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
819

    
820
    return 0;
821
fail:
822
    return -1; // free_tables will clean up for us
823
}
824

    
825
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
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
    h->thread_context[0] = h;
869
    h->outputed_poc = INT_MIN;
870
    h->prev_poc_msb= 1<<16;
871
    h->x264_build = -1;
872
    ff_h264_reset_sei(h);
873
    if(avctx->codec_id == CODEC_ID_H264){
874
        if(avctx->ticks_per_frame == 1){
875
            s->avctx->time_base.den *=2;
876
        }
877
        avctx->ticks_per_frame = 2;
878
    }
879

    
880
    if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){
881
        int i, cnt, nalsize;
882
        unsigned char *p = avctx->extradata;
883

    
884
        h->is_avc = 1;
885

    
886
        if(avctx->extradata_size < 7) {
887
            av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
888
            return -1;
889
        }
890
        /* sps and pps in the avcC always have length coded with 2 bytes,
891
           so put a fake nal_length_size = 2 while parsing them */
892
        h->nal_length_size = 2;
893
        // Decode sps from avcC
894
        cnt = *(p+5) & 0x1f; // Number of sps
895
        p += 6;
896
        for (i = 0; i < cnt; i++) {
897
            nalsize = AV_RB16(p) + 2;
898
            if(decode_nal_units(h, p, nalsize) < 0) {
899
                av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
900
                return -1;
901
            }
902
            p += nalsize;
903
        }
904
        // Decode pps from avcC
905
        cnt = *(p++); // Number of pps
906
        for (i = 0; i < cnt; i++) {
907
            nalsize = AV_RB16(p) + 2;
908
            if(decode_nal_units(h, p, nalsize)  != nalsize) {
909
                av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
910
                return -1;
911
            }
912
            p += nalsize;
913
        }
914
        // Now store right nal length size, that will be use to parse all other nals
915
        h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
916
    } else {
917
        h->is_avc = 0;
918
        if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
919
            return -1;
920
    }
921
    if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
922
        s->avctx->has_b_frames = h->sps.num_reorder_frames;
923
        s->low_delay = 0;
924
    }
925

    
926
    return 0;
927
}
928

    
929
int ff_h264_frame_start(H264Context *h){
930
    MpegEncContext * const s = &h->s;
931
    int i;
932

    
933
    if(MPV_frame_start(s, s->avctx) < 0)
934
        return -1;
935
    ff_er_frame_start(s);
936
    /*
937
     * MPV_frame_start uses pict_type to derive key_frame.
938
     * This is incorrect for H.264; IDR markings must be used.
939
     * Zero here; IDR markings per slice in frame or fields are ORed in later.
940
     * See decode_nal_units().
941
     */
942
    s->current_picture_ptr->key_frame= 0;
943
    s->current_picture_ptr->mmco_reset= 0;
944

    
945
    assert(s->linesize && s->uvlinesize);
946

    
947
    for(i=0; i<16; i++){
948
        h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
949
        h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
950
    }
951
    for(i=0; i<4; i++){
952
        h->block_offset[16+i]=
953
        h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
954
        h->block_offset[24+16+i]=
955
        h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
956
    }
957

    
958
    /* can't be in alloc_tables because linesize isn't known there.
959
     * FIXME: redo bipred weight to not require extra buffer? */
960
    for(i = 0; i < s->avctx->thread_count; i++)
961
        if(!h->thread_context[i]->s.obmc_scratchpad)
962
            h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
963

    
964
    /* some macroblocks will be accessed before they're available */
965
    if(FRAME_MBAFF || s->avctx->thread_count > 1)
966
        memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
967

    
968
//    s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
969

    
970
    // We mark the current picture as non-reference after allocating it, so
971
    // that if we break out due to an error it can be released automatically
972
    // in the next MPV_frame_start().
973
    // SVQ3 as well as most other codecs have only last/next/current and thus
974
    // get released even with set reference, besides SVQ3 and others do not
975
    // mark frames as reference later "naturally".
976
    if(s->codec_id != CODEC_ID_SVQ3)
977
        s->current_picture_ptr->reference= 0;
978

    
979
    s->current_picture_ptr->field_poc[0]=
980
    s->current_picture_ptr->field_poc[1]= INT_MAX;
981
    assert(s->current_picture_ptr->long_ref==0);
982

    
983
    return 0;
984
}
985

    
986
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){
987
    MpegEncContext * const s = &h->s;
988
    uint8_t *top_border;
989
    int top_idx = 1;
990

    
991
    src_y  -=   linesize;
992
    src_cb -= uvlinesize;
993
    src_cr -= uvlinesize;
994

    
995
    if(!simple && FRAME_MBAFF){
996
        if(s->mb_y&1){
997
            if(!MB_MBAFF){
998
                top_border = h->top_borders[0][s->mb_x];
999
                AV_COPY128(top_border, src_y + 15*linesize);
1000
                if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1001
                    AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1002
                    AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1003
                }
1004
            }
1005
        }else if(MB_MBAFF){
1006
            top_idx = 0;
1007
        }else
1008
            return;
1009
    }
1010

    
1011
    top_border = h->top_borders[top_idx][s->mb_x];
1012
    // There are two lines saved, the line above the the top macroblock of a pair,
1013
    // and the line above the bottom macroblock
1014
    AV_COPY128(top_border, src_y + 16*linesize);
1015

    
1016
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1017
        AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1018
        AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1019
    }
1020
}
1021

    
1022
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){
1023
    MpegEncContext * const s = &h->s;
1024
    int deblock_left;
1025
    int deblock_top;
1026
    int top_idx = 1;
1027
    uint8_t *top_border_m1;
1028
    uint8_t *top_border;
1029

    
1030
    if(!simple && FRAME_MBAFF){
1031
        if(s->mb_y&1){
1032
            if(!MB_MBAFF)
1033
                return;
1034
        }else{
1035
            top_idx = MB_MBAFF ? 0 : 1;
1036
        }
1037
    }
1038

    
1039
    if(h->deblocking_filter == 2) {
1040
        deblock_left = h->left_type[0];
1041
        deblock_top  = h->top_type;
1042
    } else {
1043
        deblock_left = (s->mb_x > 0);
1044
        deblock_top =  (s->mb_y > !!MB_FIELD);
1045
    }
1046

    
1047
    src_y  -=   linesize + 1;
1048
    src_cb -= uvlinesize + 1;
1049
    src_cr -= uvlinesize + 1;
1050

    
1051
    top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1052
    top_border    = h->top_borders[top_idx][s->mb_x];
1053

    
1054
#define XCHG(a,b,xchg)\
1055
if (xchg) AV_SWAP64(b,a);\
1056
else      AV_COPY64(b,a);
1057

    
1058
    if(deblock_top){
1059
        if(deblock_left){
1060
            XCHG(top_border_m1+8, src_y -7, 1);
1061
        }
1062
        XCHG(top_border+0, src_y +1, xchg);
1063
        XCHG(top_border+8, src_y +9, 1);
1064
        if(s->mb_x+1 < s->mb_width){
1065
            XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1066
        }
1067
    }
1068

    
1069
    if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1070
        if(deblock_top){
1071
            if(deblock_left){
1072
                XCHG(top_border_m1+16, src_cb -7, 1);
1073
                XCHG(top_border_m1+24, src_cr -7, 1);
1074
            }
1075
            XCHG(top_border+16, src_cb+1, 1);
1076
            XCHG(top_border+24, src_cr+1, 1);
1077
        }
1078
    }
1079
}
1080

    
1081
static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1082
    MpegEncContext * const s = &h->s;
1083
    const int mb_x= s->mb_x;
1084
    const int mb_y= s->mb_y;
1085
    const int mb_xy= h->mb_xy;
1086
    const int mb_type= s->current_picture.mb_type[mb_xy];
1087
    uint8_t  *dest_y, *dest_cb, *dest_cr;
1088
    int linesize, uvlinesize /*dct_offset*/;
1089
    int i;
1090
    int *block_offset = &h->block_offset[0];
1091
    const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1092
    /* is_h264 should always be true if SVQ3 is disabled. */
1093
    const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1094
    void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1095
    void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1096

    
1097
    dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
1098
    dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1099
    dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1100

    
1101
    s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1102
    s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1103

    
1104
    h->list_counts[mb_xy]= h->list_count;
1105

    
1106
    if (!simple && MB_FIELD) {
1107
        linesize   = h->mb_linesize   = s->linesize * 2;
1108
        uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1109
        block_offset = &h->block_offset[24];
1110
        if(mb_y&1){ //FIXME move out of this function?
1111
            dest_y -= s->linesize*15;
1112
            dest_cb-= s->uvlinesize*7;
1113
            dest_cr-= s->uvlinesize*7;
1114
        }
1115
        if(FRAME_MBAFF) {
1116
            int list;
1117
            for(list=0; list<h->list_count; list++){
1118
                if(!USES_LIST(mb_type, list))
1119
                    continue;
1120
                if(IS_16X16(mb_type)){
1121
                    int8_t *ref = &h->ref_cache[list][scan8[0]];
1122
                    fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1123
                }else{
1124
                    for(i=0; i<16; i+=4){
1125
                        int ref = h->ref_cache[list][scan8[i]];
1126
                        if(ref >= 0)
1127
                            fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1128
                    }
1129
                }
1130
            }
1131
        }
1132
    } else {
1133
        linesize   = h->mb_linesize   = s->linesize;
1134
        uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1135
//        dct_offset = s->linesize * 16;
1136
    }
1137

    
1138
    if (!simple && IS_INTRA_PCM(mb_type)) {
1139
        for (i=0; i<16; i++) {
1140
            memcpy(dest_y + i*  linesize, h->mb       + i*8, 16);
1141
        }
1142
        for (i=0; i<8; i++) {
1143
            memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4,  8);
1144
            memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4,  8);
1145
        }
1146
    } else {
1147
        if(IS_INTRA(mb_type)){
1148
            if(h->deblocking_filter)
1149
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1150

    
1151
            if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1152
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1153
                h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1154
            }
1155

    
1156
            if(IS_INTRA4x4(mb_type)){
1157
                if(simple || !s->encoding){
1158
                    if(IS_8x8DCT(mb_type)){
1159
                        if(transform_bypass){
1160
                            idct_dc_add =
1161
                            idct_add    = s->dsp.add_pixels8;
1162
                        }else{
1163
                            idct_dc_add = s->dsp.h264_idct8_dc_add;
1164
                            idct_add    = s->dsp.h264_idct8_add;
1165
                        }
1166
                        for(i=0; i<16; i+=4){
1167
                            uint8_t * const ptr= dest_y + block_offset[i];
1168
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1169
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1170
                                h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1171
                            }else{
1172
                                const int nnz = h->non_zero_count_cache[ scan8[i] ];
1173
                                h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1174
                                                            (h->topright_samples_available<<i)&0x4000, linesize);
1175
                                if(nnz){
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
                                }
1181
                            }
1182
                        }
1183
                    }else{
1184
                        if(transform_bypass){
1185
                            idct_dc_add =
1186
                            idct_add    = s->dsp.add_pixels4;
1187
                        }else{
1188
                            idct_dc_add = s->dsp.h264_idct_dc_add;
1189
                            idct_add    = s->dsp.h264_idct_add;
1190
                        }
1191
                        for(i=0; i<16; i++){
1192
                            uint8_t * const ptr= dest_y + block_offset[i];
1193
                            const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1194

    
1195
                            if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1196
                                h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1197
                            }else{
1198
                                uint8_t *topright;
1199
                                int nnz, tr;
1200
                                if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1201
                                    const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1202
                                    assert(mb_y || linesize <= block_offset[i]);
1203
                                    if(!topright_avail){
1204
                                        tr= ptr[3 - linesize]*0x01010101;
1205
                                        topright= (uint8_t*) &tr;
1206
                                    }else
1207
                                        topright= ptr + 4 - linesize;
1208
                                }else
1209
                                    topright= NULL;
1210

    
1211
                                h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1212
                                nnz = h->non_zero_count_cache[ scan8[i] ];
1213
                                if(nnz){
1214
                                    if(is_h264){
1215
                                        if(nnz == 1 && h->mb[i*16])
1216
                                            idct_dc_add(ptr, h->mb + i*16, linesize);
1217
                                        else
1218
                                            idct_add   (ptr, h->mb + i*16, linesize);
1219
                                    }else
1220
                                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1221
                                }
1222
                            }
1223
                        }
1224
                    }
1225
                }
1226
            }else{
1227
                h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1228
                if(is_h264){
1229
                    if(!transform_bypass)
1230
                        h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1231
                }else
1232
                    ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1233
            }
1234
            if(h->deblocking_filter)
1235
                xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1236
        }else if(is_h264){
1237
            hl_motion(h, dest_y, dest_cb, dest_cr,
1238
                      s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1239
                      s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1240
                      s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1241
        }
1242

    
1243

    
1244
        if(!IS_INTRA4x4(mb_type)){
1245
            if(is_h264){
1246
                if(IS_INTRA16x16(mb_type)){
1247
                    if(transform_bypass){
1248
                        if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1249
                            h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1250
                        }else{
1251
                            for(i=0; i<16; i++){
1252
                                if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1253
                                    s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1254
                            }
1255
                        }
1256
                    }else{
1257
                         s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1258
                    }
1259
                }else if(h->cbp&15){
1260
                    if(transform_bypass){
1261
                        const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1262
                        idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1263
                        for(i=0; i<16; i+=di){
1264
                            if(h->non_zero_count_cache[ scan8[i] ]){
1265
                                idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1266
                            }
1267
                        }
1268
                    }else{
1269
                        if(IS_8x8DCT(mb_type)){
1270
                            s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1271
                        }else{
1272
                            s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1273
                        }
1274
                    }
1275
                }
1276
            }else{
1277
                for(i=0; i<16; i++){
1278
                    if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1279
                        uint8_t * const ptr= dest_y + block_offset[i];
1280
                        ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1281
                    }
1282
                }
1283
            }
1284
        }
1285

    
1286
        if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1287
            uint8_t *dest[2] = {dest_cb, dest_cr};
1288
            if(transform_bypass){
1289
                if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1290
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1291
                    h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1292
                }else{
1293
                    idct_add = s->dsp.add_pixels4;
1294
                    for(i=16; i<16+8; i++){
1295
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1296
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1297
                    }
1298
                }
1299
            }else{
1300
                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]);
1301
                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]);
1302
                if(is_h264){
1303
                    idct_add = s->dsp.h264_idct_add;
1304
                    idct_dc_add = s->dsp.h264_idct_dc_add;
1305
                    for(i=16; i<16+8; i++){
1306
                        if(h->non_zero_count_cache[ scan8[i] ])
1307
                            idct_add   (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1308
                        else if(h->mb[i*16])
1309
                            idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1310
                    }
1311
                }else{
1312
                    for(i=16; i<16+8; i++){
1313
                        if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1314
                            uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1315
                            ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1316
                        }
1317
                    }
1318
                }
1319
            }
1320
        }
1321
    }
1322
    if(h->cbp || IS_INTRA(mb_type))
1323
        s->dsp.clear_blocks(h->mb);
1324
}
1325

    
1326
/**
1327
 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1328
 */
1329
static void hl_decode_mb_simple(H264Context *h){
1330
    hl_decode_mb_internal(h, 1);
1331
}
1332

    
1333
/**
1334
 * Process a macroblock; this handles edge cases, such as interlacing.
1335
 */
1336
static void av_noinline hl_decode_mb_complex(H264Context *h){
1337
    hl_decode_mb_internal(h, 0);
1338
}
1339

    
1340
void ff_h264_hl_decode_mb(H264Context *h){
1341
    MpegEncContext * const s = &h->s;
1342
    const int mb_xy= h->mb_xy;
1343
    const int mb_type= s->current_picture.mb_type[mb_xy];
1344
    int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1345

    
1346
    if (is_complex)
1347
        hl_decode_mb_complex(h);
1348
    else hl_decode_mb_simple(h);
1349
}
1350

    
1351
static int pred_weight_table(H264Context *h){
1352
    MpegEncContext * const s = &h->s;
1353
    int list, i;
1354
    int luma_def, chroma_def;
1355

    
1356
    h->use_weight= 0;
1357
    h->use_weight_chroma= 0;
1358
    h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1359
    h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1360
    luma_def = 1<<h->luma_log2_weight_denom;
1361
    chroma_def = 1<<h->chroma_log2_weight_denom;
1362

    
1363
    for(list=0; list<2; list++){
1364
        h->luma_weight_flag[list]   = 0;
1365
        h->chroma_weight_flag[list] = 0;
1366
        for(i=0; i<h->ref_count[list]; i++){
1367
            int luma_weight_flag, chroma_weight_flag;
1368

    
1369
            luma_weight_flag= get_bits1(&s->gb);
1370
            if(luma_weight_flag){
1371
                h->luma_weight[list][i][0]= get_se_golomb(&s->gb);
1372
                h->luma_weight[list][i][1]= get_se_golomb(&s->gb);
1373
                if(   h->luma_weight[list][i][0] != luma_def
1374
                   || h->luma_weight[list][i][1] != 0) {
1375
                    h->use_weight= 1;
1376
                    h->luma_weight_flag[list]= 1;
1377
                }
1378
            }else{
1379
                h->luma_weight[list][i][0]= luma_def;
1380
                h->luma_weight[list][i][1]= 0;
1381
            }
1382

    
1383
            if(CHROMA){
1384
                chroma_weight_flag= get_bits1(&s->gb);
1385
                if(chroma_weight_flag){
1386
                    int j;
1387
                    for(j=0; j<2; j++){
1388
                        h->chroma_weight[list][i][j][0]= get_se_golomb(&s->gb);
1389
                        h->chroma_weight[list][i][j][1]= get_se_golomb(&s->gb);
1390
                        if(   h->chroma_weight[list][i][j][0] != chroma_def
1391
                           || h->chroma_weight[list][i][j][1] != 0) {
1392
                            h->use_weight_chroma= 1;
1393
                            h->chroma_weight_flag[list]= 1;
1394
                        }
1395
                    }
1396
                }else{
1397
                    int j;
1398
                    for(j=0; j<2; j++){
1399
                        h->chroma_weight[list][i][j][0]= chroma_def;
1400
                        h->chroma_weight[list][i][j][1]= 0;
1401
                    }
1402
                }
1403
            }
1404
        }
1405
        if(h->slice_type_nos != FF_B_TYPE) break;
1406
    }
1407
    h->use_weight= h->use_weight || h->use_weight_chroma;
1408
    return 0;
1409
}
1410

    
1411
static void implicit_weight_table(H264Context *h){
1412
    MpegEncContext * const s = &h->s;
1413
    int ref0, ref1, i;
1414
    int cur_poc = s->current_picture_ptr->poc;
1415

    
1416
    for (i = 0; i < 2; i++) {
1417
        h->luma_weight_flag[i]   = 0;
1418
        h->chroma_weight_flag[i] = 0;
1419
    }
1420

    
1421
    if(   h->ref_count[0] == 1 && h->ref_count[1] == 1
1422
       && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1423
        h->use_weight= 0;
1424
        h->use_weight_chroma= 0;
1425
        return;
1426
    }
1427

    
1428
    h->use_weight= 2;
1429
    h->use_weight_chroma= 2;
1430
    h->luma_log2_weight_denom= 5;
1431
    h->chroma_log2_weight_denom= 5;
1432

    
1433
    for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1434
        int poc0 = h->ref_list[0][ref0].poc;
1435
        for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1436
            int poc1 = h->ref_list[1][ref1].poc;
1437
            int td = av_clip(poc1 - poc0, -128, 127);
1438
            h->implicit_weight[ref0][ref1] = 32;
1439
            if(td){
1440
                int tb = av_clip(cur_poc - poc0, -128, 127);
1441
                int tx = (16384 + (FFABS(td) >> 1)) / td;
1442
                int dist_scale_factor = (tb*tx + 32) >> 8;
1443
                if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1444
                    h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1445
            }
1446
        }
1447
    }
1448
}
1449

    
1450
/**
1451
 * instantaneous decoder refresh.
1452
 */
1453
static void idr(H264Context *h){
1454
    ff_h264_remove_all_refs(h);
1455
    h->prev_frame_num= 0;
1456
    h->prev_frame_num_offset= 0;
1457
    h->prev_poc_msb=
1458
    h->prev_poc_lsb= 0;
1459
}
1460

    
1461
/* forget old pics after a seek */
1462
static void flush_dpb(AVCodecContext *avctx){
1463
    H264Context *h= avctx->priv_data;
1464
    int i;
1465
    for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1466
        if(h->delayed_pic[i])
1467
            h->delayed_pic[i]->reference= 0;
1468
        h->delayed_pic[i]= NULL;
1469
    }
1470
    h->outputed_poc= INT_MIN;
1471
    h->prev_interlaced_frame = 1;
1472
    idr(h);
1473
    if(h->s.current_picture_ptr)
1474
        h->s.current_picture_ptr->reference= 0;
1475
    h->s.first_field= 0;
1476
    ff_h264_reset_sei(h);
1477
    ff_mpeg_flush(avctx);
1478
}
1479

    
1480
static int init_poc(H264Context *h){
1481
    MpegEncContext * const s = &h->s;
1482
    const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1483
    int field_poc[2];
1484
    Picture *cur = s->current_picture_ptr;
1485

    
1486
    h->frame_num_offset= h->prev_frame_num_offset;
1487
    if(h->frame_num < h->prev_frame_num)
1488
        h->frame_num_offset += max_frame_num;
1489

    
1490
    if(h->sps.poc_type==0){
1491
        const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1492

    
1493
        if     (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1494
            h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1495
        else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1496
            h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1497
        else
1498
            h->poc_msb = h->prev_poc_msb;
1499
//printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1500
        field_poc[0] =
1501
        field_poc[1] = h->poc_msb + h->poc_lsb;
1502
        if(s->picture_structure == PICT_FRAME)
1503
            field_poc[1] += h->delta_poc_bottom;
1504
    }else if(h->sps.poc_type==1){
1505
        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1506
        int i;
1507

    
1508
        if(h->sps.poc_cycle_length != 0)
1509
            abs_frame_num = h->frame_num_offset + h->frame_num;
1510
        else
1511
            abs_frame_num = 0;
1512

    
1513
        if(h->nal_ref_idc==0 && abs_frame_num > 0)
1514
            abs_frame_num--;
1515

    
1516
        expected_delta_per_poc_cycle = 0;
1517
        for(i=0; i < h->sps.poc_cycle_length; i++)
1518
            expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1519

    
1520
        if(abs_frame_num > 0){
1521
            int poc_cycle_cnt          = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1522
            int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1523

    
1524
            expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1525
            for(i = 0; i <= frame_num_in_poc_cycle; i++)
1526
                expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1527
        } else
1528
            expectedpoc = 0;
1529

    
1530
        if(h->nal_ref_idc == 0)
1531
            expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1532

    
1533
        field_poc[0] = expectedpoc + h->delta_poc[0];
1534
        field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1535

    
1536
        if(s->picture_structure == PICT_FRAME)
1537
            field_poc[1] += h->delta_poc[1];
1538
    }else{
1539
        int poc= 2*(h->frame_num_offset + h->frame_num);
1540

    
1541
        if(!h->nal_ref_idc)
1542
            poc--;
1543

    
1544
        field_poc[0]= poc;
1545
        field_poc[1]= poc;
1546
    }
1547

    
1548
    if(s->picture_structure != PICT_BOTTOM_FIELD)
1549
        s->current_picture_ptr->field_poc[0]= field_poc[0];
1550
    if(s->picture_structure != PICT_TOP_FIELD)
1551
        s->current_picture_ptr->field_poc[1]= field_poc[1];
1552
    cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1553

    
1554
    return 0;
1555
}
1556

    
1557

    
1558
/**
1559
 * initialize scan tables
1560
 */
1561
static void init_scan_tables(H264Context *h){
1562
    MpegEncContext * const s = &h->s;
1563
    int i;
1564
    if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1565
        memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1566
        memcpy(h-> field_scan,  field_scan, 16*sizeof(uint8_t));
1567
    }else{
1568
        for(i=0; i<16; i++){
1569
#define T(x) (x>>2) | ((x<<2) & 0xF)
1570
            h->zigzag_scan[i] = T(zigzag_scan[i]);
1571
            h-> field_scan[i] = T( field_scan[i]);
1572
#undef T
1573
        }
1574
    }
1575
    if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1576
        memcpy(h->zigzag_scan8x8,       ff_zigzag_direct,     64*sizeof(uint8_t));
1577
        memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1578
        memcpy(h->field_scan8x8,        field_scan8x8,        64*sizeof(uint8_t));
1579
        memcpy(h->field_scan8x8_cavlc,  field_scan8x8_cavlc,  64*sizeof(uint8_t));
1580
    }else{
1581
        for(i=0; i<64; i++){
1582
#define T(x) (x>>3) | ((x&7)<<3)
1583
            h->zigzag_scan8x8[i]       = T(ff_zigzag_direct[i]);
1584
            h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1585
            h->field_scan8x8[i]        = T(field_scan8x8[i]);
1586
            h->field_scan8x8_cavlc[i]  = T(field_scan8x8_cavlc[i]);
1587
#undef T
1588
        }
1589
    }
1590
    if(h->sps.transform_bypass){ //FIXME same ugly
1591
        h->zigzag_scan_q0          = zigzag_scan;
1592
        h->zigzag_scan8x8_q0       = ff_zigzag_direct;
1593
        h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1594
        h->field_scan_q0           = field_scan;
1595
        h->field_scan8x8_q0        = field_scan8x8;
1596
        h->field_scan8x8_cavlc_q0  = field_scan8x8_cavlc;
1597
    }else{
1598
        h->zigzag_scan_q0          = h->zigzag_scan;
1599
        h->zigzag_scan8x8_q0       = h->zigzag_scan8x8;
1600
        h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1601
        h->field_scan_q0           = h->field_scan;
1602
        h->field_scan8x8_q0        = h->field_scan8x8;
1603
        h->field_scan8x8_cavlc_q0  = h->field_scan8x8_cavlc;
1604
    }
1605
}
1606

    
1607
static void field_end(H264Context *h){
1608
    MpegEncContext * const s = &h->s;
1609
    AVCodecContext * const avctx= s->avctx;
1610
    s->mb_y= 0;
1611

    
1612
    s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1613
    s->current_picture_ptr->pict_type= s->pict_type;
1614

    
1615
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1616
        ff_vdpau_h264_set_reference_frames(s);
1617

    
1618
    if(!s->dropable) {
1619
        ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1620
        h->prev_poc_msb= h->poc_msb;
1621
        h->prev_poc_lsb= h->poc_lsb;
1622
    }
1623
    h->prev_frame_num_offset= h->frame_num_offset;
1624
    h->prev_frame_num= h->frame_num;
1625

    
1626
    if (avctx->hwaccel) {
1627
        if (avctx->hwaccel->end_frame(avctx) < 0)
1628
            av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1629
    }
1630

    
1631
    if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1632
        ff_vdpau_h264_picture_complete(s);
1633

    
1634
    /*
1635
     * FIXME: Error handling code does not seem to support interlaced
1636
     * when slices span multiple rows
1637
     * The ff_er_add_slice calls don't work right for bottom
1638
     * fields; they cause massive erroneous error concealing
1639
     * Error marking covers both fields (top and bottom).
1640
     * This causes a mismatched s->error_count
1641
     * and a bad error table. Further, the error count goes to
1642
     * INT_MAX when called for bottom field, because mb_y is
1643
     * past end by one (callers fault) and resync_mb_y != 0
1644
     * causes problems for the first MB line, too.
1645
     */
1646
    if (!FIELD_PICTURE)
1647
        ff_er_frame_end(s);
1648

    
1649
    MPV_frame_end(s);
1650

    
1651
    h->current_slice=0;
1652
}
1653

    
1654
/**
1655
 * Replicates H264 "master" context to thread contexts.
1656
 */
1657
static void clone_slice(H264Context *dst, H264Context *src)
1658
{
1659
    memcpy(dst->block_offset,     src->block_offset, sizeof(dst->block_offset));
1660
    dst->s.current_picture_ptr  = src->s.current_picture_ptr;
1661
    dst->s.current_picture      = src->s.current_picture;
1662
    dst->s.linesize             = src->s.linesize;
1663
    dst->s.uvlinesize           = src->s.uvlinesize;
1664
    dst->s.first_field          = src->s.first_field;
1665

    
1666
    dst->prev_poc_msb           = src->prev_poc_msb;
1667
    dst->prev_poc_lsb           = src->prev_poc_lsb;
1668
    dst->prev_frame_num_offset  = src->prev_frame_num_offset;
1669
    dst->prev_frame_num         = src->prev_frame_num;
1670
    dst->short_ref_count        = src->short_ref_count;
1671

    
1672
    memcpy(dst->short_ref,        src->short_ref,        sizeof(dst->short_ref));
1673
    memcpy(dst->long_ref,         src->long_ref,         sizeof(dst->long_ref));
1674
    memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1675
    memcpy(dst->ref_list,         src->ref_list,         sizeof(dst->ref_list));
1676

    
1677
    memcpy(dst->dequant4_coeff,   src->dequant4_coeff,   sizeof(src->dequant4_coeff));
1678
    memcpy(dst->dequant8_coeff,   src->dequant8_coeff,   sizeof(src->dequant8_coeff));
1679
}
1680

    
1681
/**
1682
 * decodes a slice header.
1683
 * This will also call MPV_common_init() and frame_start() as needed.
1684
 *
1685
 * @param h h264context
1686
 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1687
 *
1688
 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1689
 */
1690
static int decode_slice_header(H264Context *h, H264Context *h0){
1691
    MpegEncContext * const s = &h->s;
1692
    MpegEncContext * const s0 = &h0->s;
1693
    unsigned int first_mb_in_slice;
1694
    unsigned int pps_id;
1695
    int num_ref_idx_active_override_flag;
1696
    unsigned int slice_type, tmp, i, j;
1697
    int default_ref_list_done = 0;
1698
    int last_pic_structure;
1699

    
1700
    s->dropable= h->nal_ref_idc == 0;
1701

    
1702
    if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1703
        s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1704
        s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1705
    }else{
1706
        s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1707
        s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1708
    }
1709

    
1710
    first_mb_in_slice= get_ue_golomb(&s->gb);
1711

    
1712
    if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1713
        if(h0->current_slice && FIELD_PICTURE){
1714
            field_end(h);
1715
        }
1716

    
1717
        h0->current_slice = 0;
1718
        if (!s0->first_field)
1719
            s->current_picture_ptr= NULL;
1720
    }
1721

    
1722
    slice_type= get_ue_golomb_31(&s->gb);
1723
    if(slice_type > 9){
1724
        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);
1725
        return -1;
1726
    }
1727
    if(slice_type > 4){
1728
        slice_type -= 5;
1729
        h->slice_type_fixed=1;
1730
    }else
1731
        h->slice_type_fixed=0;
1732

    
1733
    slice_type= golomb_to_pict_type[ slice_type ];
1734
    if (slice_type == FF_I_TYPE
1735
        || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1736
        default_ref_list_done = 1;
1737
    }
1738
    h->slice_type= slice_type;
1739
    h->slice_type_nos= slice_type & 3;
1740

    
1741
    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1742

    
1743
    pps_id= get_ue_golomb(&s->gb);
1744
    if(pps_id>=MAX_PPS_COUNT){
1745
        av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1746
        return -1;
1747
    }
1748
    if(!h0->pps_buffers[pps_id]) {
1749
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1750
        return -1;
1751
    }
1752
    h->pps= *h0->pps_buffers[pps_id];
1753

    
1754
    if(!h0->sps_buffers[h->pps.sps_id]) {
1755
        av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1756
        return -1;
1757
    }
1758
    h->sps = *h0->sps_buffers[h->pps.sps_id];
1759

    
1760
    if(h == h0 && h->dequant_coeff_pps != pps_id){
1761
        h->dequant_coeff_pps = pps_id;
1762
        init_dequant_tables(h);
1763
    }
1764

    
1765
    s->mb_width= h->sps.mb_width;
1766
    s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1767

    
1768
    h->b_stride=  s->mb_width*4;
1769

    
1770
    s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1771
    if(h->sps.frame_mbs_only_flag)
1772
        s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1773
    else
1774
        s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1775

    
1776
    if (s->context_initialized
1777
        && (   s->width != s->avctx->width || s->height != s->avctx->height)) {
1778
        if(h != h0)
1779
            return -1;   // width / height changed during parallelized decoding
1780
        free_tables(h);
1781
        flush_dpb(s->avctx);
1782
        MPV_common_end(s);
1783
    }
1784
    if (!s->context_initialized) {
1785
        if(h != h0)
1786
            return -1;  // we cant (re-)initialize context during parallel decoding
1787

    
1788
        avcodec_set_dimensions(s->avctx, s->width, s->height);
1789
        s->avctx->sample_aspect_ratio= h->sps.sar;
1790
        if(!s->avctx->sample_aspect_ratio.den)
1791
            s->avctx->sample_aspect_ratio.den = 1;
1792

    
1793
        if(h->sps.video_signal_type_present_flag){
1794
            s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1795
            if(h->sps.colour_description_present_flag){
1796
                s->avctx->color_primaries = h->sps.color_primaries;
1797
                s->avctx->color_trc       = h->sps.color_trc;
1798
                s->avctx->colorspace      = h->sps.colorspace;
1799
            }
1800
        }
1801

    
1802
        if(h->sps.timing_info_present_flag){
1803
            int64_t den= h->sps.time_scale;
1804
            if(h->x264_build < 44U)
1805
                den *= 2;
1806
            av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1807
                      h->sps.num_units_in_tick, den, 1<<30);
1808
        }
1809
        s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1810
        s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1811

    
1812
        if (MPV_common_init(s) < 0)
1813
            return -1;
1814
        s->first_field = 0;
1815
        h->prev_interlaced_frame = 1;
1816

    
1817
        init_scan_tables(h);
1818
        ff_h264_alloc_tables(h);
1819

    
1820
        for(i = 1; i < s->avctx->thread_count; i++) {
1821
            H264Context *c;
1822
            c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1823
            memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1824
            memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1825
            c->sps = h->sps;
1826
            c->pps = h->pps;
1827
            init_scan_tables(c);
1828
            clone_tables(c, h, i);
1829
        }
1830

    
1831
        for(i = 0; i < s->avctx->thread_count; i++)
1832
            if(context_init(h->thread_context[i]) < 0)
1833
                return -1;
1834
    }
1835

    
1836
    h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1837

    
1838
    h->mb_mbaff = 0;
1839
    h->mb_aff_frame = 0;
1840
    last_pic_structure = s0->picture_structure;
1841
    if(h->sps.frame_mbs_only_flag){
1842
        s->picture_structure= PICT_FRAME;
1843
    }else{
1844
        if(get_bits1(&s->gb)) { //field_pic_flag
1845
            s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1846
        } else {
1847
            s->picture_structure= PICT_FRAME;
1848
            h->mb_aff_frame = h->sps.mb_aff;
1849
        }
1850
    }
1851
    h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1852

    
1853
    if(h0->current_slice == 0){
1854
        while(h->frame_num !=  h->prev_frame_num &&
1855
              h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1856
            av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1857
            if (ff_h264_frame_start(h) < 0)
1858
                return -1;
1859
            h->prev_frame_num++;
1860
            h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1861
            s->current_picture_ptr->frame_num= h->prev_frame_num;
1862
            ff_h264_execute_ref_pic_marking(h, NULL, 0);
1863
        }
1864

    
1865
        /* See if we have a decoded first field looking for a pair... */
1866
        if (s0->first_field) {
1867
            assert(s0->current_picture_ptr);
1868
            assert(s0->current_picture_ptr->data[0]);
1869
            assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1870

    
1871
            /* figure out if we have a complementary field pair */
1872
            if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1873
                /*
1874
                 * Previous field is unmatched. Don't display it, but let it
1875
                 * remain for reference if marked as such.
1876
                 */
1877
                s0->current_picture_ptr = NULL;
1878
                s0->first_field = FIELD_PICTURE;
1879

    
1880
            } else {
1881
                if (h->nal_ref_idc &&
1882
                        s0->current_picture_ptr->reference &&
1883
                        s0->current_picture_ptr->frame_num != h->frame_num) {
1884
                    /*
1885
                     * This and previous field were reference, but had
1886
                     * different frame_nums. Consider this field first in
1887
                     * pair. Throw away previous field except for reference
1888
                     * purposes.
1889
                     */
1890
                    s0->first_field = 1;
1891
                    s0->current_picture_ptr = NULL;
1892

    
1893
                } else {
1894
                    /* Second field in complementary pair */
1895
                    s0->first_field = 0;
1896
                }
1897
            }
1898

    
1899
        } else {
1900
            /* Frame or first field in a potentially complementary pair */
1901
            assert(!s0->current_picture_ptr);
1902
            s0->first_field = FIELD_PICTURE;
1903
        }
1904

    
1905
        if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1906
            s0->first_field = 0;
1907
            return -1;
1908
        }
1909
    }
1910
    if(h != h0)
1911
        clone_slice(h, h0);
1912

    
1913
    s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1914

    
1915
    assert(s->mb_num == s->mb_width * s->mb_height);
1916
    if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1917
       first_mb_in_slice                    >= s->mb_num){
1918
        av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1919
        return -1;
1920
    }
1921
    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1922
    s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1923
    if (s->picture_structure == PICT_BOTTOM_FIELD)
1924
        s->resync_mb_y = s->mb_y = s->mb_y + 1;
1925
    assert(s->mb_y < s->mb_height);
1926

    
1927
    if(s->picture_structure==PICT_FRAME){
1928
        h->curr_pic_num=   h->frame_num;
1929
        h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1930
    }else{
1931
        h->curr_pic_num= 2*h->frame_num + 1;
1932
        h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1933
    }
1934

    
1935
    if(h->nal_unit_type == NAL_IDR_SLICE){
1936
        get_ue_golomb(&s->gb); /* idr_pic_id */
1937
    }
1938

    
1939
    if(h->sps.poc_type==0){
1940
        h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1941

    
1942
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1943
            h->delta_poc_bottom= get_se_golomb(&s->gb);
1944
        }
1945
    }
1946

    
1947
    if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1948
        h->delta_poc[0]= get_se_golomb(&s->gb);
1949

    
1950
        if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1951
            h->delta_poc[1]= get_se_golomb(&s->gb);
1952
    }
1953

    
1954
    init_poc(h);
1955

    
1956
    if(h->pps.redundant_pic_cnt_present){
1957
        h->redundant_pic_count= get_ue_golomb(&s->gb);
1958
    }
1959

    
1960
    //set defaults, might be overridden a few lines later
1961
    h->ref_count[0]= h->pps.ref_count[0];
1962
    h->ref_count[1]= h->pps.ref_count[1];
1963

    
1964
    if(h->slice_type_nos != FF_I_TYPE){
1965
        if(h->slice_type_nos == FF_B_TYPE){
1966
            h->direct_spatial_mv_pred= get_bits1(&s->gb);
1967
        }
1968
        num_ref_idx_active_override_flag= get_bits1(&s->gb);
1969

    
1970
        if(num_ref_idx_active_override_flag){
1971
            h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1972
            if(h->slice_type_nos==FF_B_TYPE)
1973
                h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1974

    
1975
            if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1976
                av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1977
                h->ref_count[0]= h->ref_count[1]= 1;
1978
                return -1;
1979
            }
1980
        }
1981
        if(h->slice_type_nos == FF_B_TYPE)
1982
            h->list_count= 2;
1983
        else
1984
            h->list_count= 1;
1985
    }else
1986
        h->list_count= 0;
1987

    
1988
    if(!default_ref_list_done){
1989
        ff_h264_fill_default_ref_list(h);
1990
    }
1991

    
1992
    if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1993
        return -1;
1994

    
1995
    if(h->slice_type_nos!=FF_I_TYPE){
1996
        s->last_picture_ptr= &h->ref_list[0][0];
1997
        ff_copy_picture(&s->last_picture, s->last_picture_ptr);
1998
    }
1999
    if(h->slice_type_nos==FF_B_TYPE){
2000
        s->next_picture_ptr= &h->ref_list[1][0];
2001
        ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2002
    }
2003

    
2004
    if(   (h->pps.weighted_pred          && h->slice_type_nos == FF_P_TYPE )
2005
       ||  (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2006
        pred_weight_table(h);
2007
    else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2008
        implicit_weight_table(h);
2009
    }else {
2010
        h->use_weight = 0;
2011
        for (i = 0; i < 2; i++) {
2012
            h->luma_weight_flag[i]   = 0;
2013
            h->chroma_weight_flag[i] = 0;
2014
        }
2015
    }
2016

    
2017
    if(h->nal_ref_idc)
2018
        ff_h264_decode_ref_pic_marking(h0, &s->gb);
2019

    
2020
    if(FRAME_MBAFF)
2021
        ff_h264_fill_mbaff_ref_list(h);
2022

    
2023
    if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2024
        ff_h264_direct_dist_scale_factor(h);
2025
    ff_h264_direct_ref_list_init(h);
2026

    
2027
    if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2028
        tmp = get_ue_golomb_31(&s->gb);
2029
        if(tmp > 2){
2030
            av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2031
            return -1;
2032
        }
2033
        h->cabac_init_idc= tmp;
2034
    }
2035

    
2036
    h->last_qscale_diff = 0;
2037
    tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2038
    if(tmp>51){
2039
        av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2040
        return -1;
2041
    }
2042
    s->qscale= tmp;
2043
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2044
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2045
    //FIXME qscale / qp ... stuff
2046
    if(h->slice_type == FF_SP_TYPE){
2047
        get_bits1(&s->gb); /* sp_for_switch_flag */
2048
    }
2049
    if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2050
        get_se_golomb(&s->gb); /* slice_qs_delta */
2051
    }
2052

    
2053
    h->deblocking_filter = 1;
2054
    h->slice_alpha_c0_offset = 52;
2055
    h->slice_beta_offset = 52;
2056
    if( h->pps.deblocking_filter_parameters_present ) {
2057
        tmp= get_ue_golomb_31(&s->gb);
2058
        if(tmp > 2){
2059
            av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2060
            return -1;
2061
        }
2062
        h->deblocking_filter= tmp;
2063
        if(h->deblocking_filter < 2)
2064
            h->deblocking_filter^= 1; // 1<->0
2065

    
2066
        if( h->deblocking_filter ) {
2067
            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2068
            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
2069
            if(   h->slice_alpha_c0_offset > 104U
2070
               || h->slice_beta_offset     > 104U){
2071
                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);
2072
                return -1;
2073
            }
2074
        }
2075
    }
2076

    
2077
    if(   s->avctx->skip_loop_filter >= AVDISCARD_ALL
2078
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2079
       ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR  && h->slice_type_nos == FF_B_TYPE)
2080
       ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2081
        h->deblocking_filter= 0;
2082

    
2083
    if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2084
        if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2085
            /* Cheat slightly for speed:
2086
               Do not bother to deblock across slices. */
2087
            h->deblocking_filter = 2;
2088
        } else {
2089
            h0->max_contexts = 1;
2090
            if(!h0->single_decode_warning) {
2091
                av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2092
                h0->single_decode_warning = 1;
2093
            }
2094
            if(h != h0)
2095
                return 1; // deblocking switched inside frame
2096
        }
2097
    }
2098
    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]);
2099

    
2100
#if 0 //FMO
2101
    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2102
        slice_group_change_cycle= get_bits(&s->gb, ?);
2103
#endif
2104

    
2105
    h0->last_slice_type = slice_type;
2106
    h->slice_num = ++h0->current_slice;
2107
    if(h->slice_num >= MAX_SLICES){
2108
        av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2109
    }
2110

    
2111
    for(j=0; j<2; j++){
2112
        int id_list[16];
2113
        int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2114
        for(i=0; i<16; i++){
2115
            id_list[i]= 60;
2116
            if(h->ref_list[j][i].data[0]){
2117
                int k;
2118
                uint8_t *base= h->ref_list[j][i].base[0];
2119
                for(k=0; k<h->short_ref_count; k++)
2120
                    if(h->short_ref[k]->base[0] == base){
2121
                        id_list[i]= k;
2122
                        break;
2123
                    }
2124
                for(k=0; k<h->long_ref_count; k++)
2125
                    if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2126
                        id_list[i]= h->short_ref_count + k;
2127
                        break;
2128
                    }
2129
            }
2130
        }
2131

    
2132
        ref2frm[0]=
2133
        ref2frm[1]= -1;
2134
        for(i=0; i<16; i++)
2135
            ref2frm[i+2]= 4*id_list[i]
2136
                          +(h->ref_list[j][i].reference&3);
2137
        ref2frm[18+0]=
2138
        ref2frm[18+1]= -1;
2139
        for(i=16; i<48; i++)
2140
            ref2frm[i+4]= 4*id_list[(i-16)>>1]
2141
                          +(h->ref_list[j][i].reference&3);
2142
    }
2143

    
2144
    h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2145
    h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2146

    
2147
    s->avctx->refs= h->sps.ref_frame_count;
2148

    
2149
    if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2150
        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",
2151
               h->slice_num,
2152
               (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2153
               first_mb_in_slice,
2154
               av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2155
               pps_id, h->frame_num,
2156
               s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2157
               h->ref_count[0], h->ref_count[1],
2158
               s->qscale,
2159
               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2160
               h->use_weight,
2161
               h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2162
               h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2163
               );
2164
    }
2165

    
2166
    return 0;
2167
}
2168

    
2169
int ff_h264_get_slice_type(const H264Context *h)
2170
{
2171
    switch (h->slice_type) {
2172
    case FF_P_TYPE:  return 0;
2173
    case FF_B_TYPE:  return 1;
2174
    case FF_I_TYPE:  return 2;
2175
    case FF_SP_TYPE: return 3;
2176
    case FF_SI_TYPE: return 4;
2177
    default:         return -1;
2178
    }
2179
}
2180

    
2181
static void loop_filter(H264Context *h){
2182
    MpegEncContext * const s = &h->s;
2183
    uint8_t  *dest_y, *dest_cb, *dest_cr;
2184
    int linesize, uvlinesize, mb_x, mb_y;
2185
    const int end_mb_y= s->mb_y + FRAME_MBAFF;
2186
    const int old_slice_type= h->slice_type;
2187

    
2188
    if(h->deblocking_filter) {
2189
        for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2190
            for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2191
                int mb_xy, mb_type;
2192
                mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2193
                h->slice_num= h->slice_table[mb_xy];
2194
                mb_type= s->current_picture.mb_type[mb_xy];
2195
                h->list_count= h->list_counts[mb_xy];
2196

    
2197
                if(FRAME_MBAFF)
2198
                    h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2199

    
2200
                s->mb_x= mb_x;
2201
                s->mb_y= mb_y;
2202
                dest_y  = s->current_picture.data[0] + (mb_x + mb_y * s->linesize  ) * 16;
2203
                dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2204
                dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2205
                    //FIXME simplify above
2206

    
2207
                if (MB_FIELD) {
2208
                    linesize   = h->mb_linesize   = s->linesize * 2;
2209
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2210
                    if(mb_y&1){ //FIXME move out of this function?
2211
                        dest_y -= s->linesize*15;
2212
                        dest_cb-= s->uvlinesize*7;
2213
                        dest_cr-= s->uvlinesize*7;
2214
                    }
2215
                } else {
2216
                    linesize   = h->mb_linesize   = s->linesize;
2217
                    uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2218
                }
2219
                backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2220
                if(fill_filter_caches(h, mb_type))
2221
                    continue;
2222
                h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2223
                h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2224

    
2225
                if (FRAME_MBAFF) {
2226
                    ff_h264_filter_mb     (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2227
                } else {
2228
                    ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2229
                }
2230
            }
2231
        }
2232
    }
2233
    h->slice_type= old_slice_type;
2234
    s->mb_x= 0;
2235
    s->mb_y= end_mb_y - FRAME_MBAFF;
2236
    h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2237
    h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2238
}
2239

    
2240
static void predict_field_decoding_flag(H264Context *h){
2241
    MpegEncContext * const s = &h->s;
2242
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2243
    int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2244
                ? s->current_picture.mb_type[mb_xy-1]
2245
                : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2246
                ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2247
                : 0;
2248
    h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2249
}
2250

    
2251
static int decode_slice(struct AVCodecContext *avctx, void *arg){
2252
    H264Context *h = *(void**)arg;
2253
    MpegEncContext * const s = &h->s;
2254
    const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2255

    
2256
    s->mb_skip_run= -1;
2257

    
2258
    h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2259
                    (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2260

    
2261
    if( h->pps.cabac ) {
2262
        /* realign */
2263
        align_get_bits( &s->gb );
2264

    
2265
        /* init cabac */
2266
        ff_init_cabac_states( &h->cabac);
2267
        ff_init_cabac_decoder( &h->cabac,
2268
                               s->gb.buffer + get_bits_count(&s->gb)/8,
2269
                               (get_bits_left(&s->gb) + 7)/8);
2270

    
2271
        ff_h264_init_cabac_states(h);
2272

    
2273
        for(;;){
2274
//START_TIMER
2275
            int ret = ff_h264_decode_mb_cabac(h);
2276
            int eos;
2277
//STOP_TIMER("decode_mb_cabac")
2278

    
2279
            if(ret>=0) ff_h264_hl_decode_mb(h);
2280

    
2281
            if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2282
                s->mb_y++;
2283

    
2284
                ret = ff_h264_decode_mb_cabac(h);
2285

    
2286
                if(ret>=0) ff_h264_hl_decode_mb(h);
2287
                s->mb_y--;
2288
            }
2289
            eos = get_cabac_terminate( &h->cabac );
2290

    
2291
            if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2292
                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);
2293
                return 0;
2294
            }
2295
            if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2296
                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);
2297
                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);
2298
                return -1;
2299
            }
2300

    
2301
            if( ++s->mb_x >= s->mb_width ) {
2302
                s->mb_x = 0;
2303
                loop_filter(h);
2304
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2305
                ++s->mb_y;
2306
                if(FIELD_OR_MBAFF_PICTURE) {
2307
                    ++s->mb_y;
2308
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2309
                        predict_field_decoding_flag(h);
2310
                }
2311
            }
2312

    
2313
            if( eos || s->mb_y >= s->mb_height ) {
2314
                tprintf(s->avctx, "slice end %d %d\n", 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
                return 0;
2317
            }
2318
        }
2319

    
2320
    } else {
2321
        for(;;){
2322
            int ret = ff_h264_decode_mb_cavlc(h);
2323

    
2324
            if(ret>=0) ff_h264_hl_decode_mb(h);
2325

    
2326
            if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2327
                s->mb_y++;
2328
                ret = ff_h264_decode_mb_cavlc(h);
2329

    
2330
                if(ret>=0) ff_h264_hl_decode_mb(h);
2331
                s->mb_y--;
2332
            }
2333

    
2334
            if(ret<0){
2335
                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2336
                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);
2337

    
2338
                return -1;
2339
            }
2340

    
2341
            if(++s->mb_x >= s->mb_width){
2342
                s->mb_x=0;
2343
                loop_filter(h);
2344
                ff_draw_horiz_band(s, 16*s->mb_y, 16);
2345
                ++s->mb_y;
2346
                if(FIELD_OR_MBAFF_PICTURE) {
2347
                    ++s->mb_y;
2348
                    if(FRAME_MBAFF && s->mb_y < s->mb_height)
2349
                        predict_field_decoding_flag(h);
2350
                }
2351
                if(s->mb_y >= s->mb_height){
2352
                    tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2353

    
2354
                    if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2355
                        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);
2356

    
2357
                        return 0;
2358
                    }else{
2359
                        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);
2360

    
2361
                        return -1;
2362
                    }
2363
                }
2364
            }
2365

    
2366
            if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2367
                tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2368
                if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2369
                    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);
2370

    
2371
                    return 0;
2372
                }else{
2373
                    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);
2374

    
2375
                    return -1;
2376
                }
2377
            }
2378
        }
2379
    }
2380

    
2381
#if 0
2382
    for(;s->mb_y < s->mb_height; s->mb_y++){
2383
        for(;s->mb_x < s->mb_width; s->mb_x++){
2384
            int ret= decode_mb(h);
2385

2386
            ff_h264_hl_decode_mb(h);
2387

2388
            if(ret<0){
2389
                av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2390
                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);
2391

2392
                return -1;
2393
            }
2394

2395
            if(++s->mb_x >= s->mb_width){
2396
                s->mb_x=0;
2397
                if(++s->mb_y >= s->mb_height){
2398
                    if(get_bits_count(s->gb) == s->gb.size_in_bits){
2399
                        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);
2400

2401
                        return 0;
2402
                    }else{
2403
                        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);
2404

2405
                        return -1;
2406
                    }
2407
                }
2408
            }
2409

2410
            if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2411
                if(get_bits_count(s->gb) == s->gb.size_in_bits){
2412
                    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);
2413

2414
                    return 0;
2415
                }else{
2416
                    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);
2417

2418
                    return -1;
2419
                }
2420
            }
2421
        }
2422
        s->mb_x=0;
2423
        ff_draw_horiz_band(s, 16*s->mb_y, 16);
2424
    }
2425
#endif
2426
    return -1; //not reached
2427
}
2428

    
2429
/**
2430
 * Call decode_slice() for each context.
2431
 *
2432
 * @param h h264 master context
2433
 * @param context_count number of contexts to execute
2434
 */
2435
static void execute_decode_slices(H264Context *h, int context_count){
2436
    MpegEncContext * const s = &h->s;
2437
    AVCodecContext * const avctx= s->avctx;
2438
    H264Context *hx;
2439
    int i;
2440

    
2441
    if (s->avctx->hwaccel)
2442
        return;
2443
    if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2444
        return;
2445
    if(context_count == 1) {
2446
        decode_slice(avctx, &h);
2447
    } else {
2448
        for(i = 1; i < context_count; i++) {
2449
            hx = h->thread_context[i];
2450
            hx->s.error_recognition = avctx->error_recognition;
2451
            hx->s.error_count = 0;
2452
        }
2453

    
2454
        avctx->execute(avctx, (void *)decode_slice,
2455
                       h->thread_context, NULL, context_count, sizeof(void*));
2456

    
2457
        /* pull back stuff from slices to master context */
2458
        hx = h->thread_context[context_count - 1];
2459
        s->mb_x = hx->s.mb_x;
2460
        s->mb_y = hx->s.mb_y;
2461
        s->dropable = hx->s.dropable;
2462
        s->picture_structure = hx->s.picture_structure;
2463
        for(i = 1; i < context_count; i++)
2464
            h->s.error_count += h->thread_context[i]->s.error_count;
2465
    }
2466
}
2467

    
2468

    
2469
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2470
    MpegEncContext * const s = &h->s;
2471
    AVCodecContext * const avctx= s->avctx;
2472
    int buf_index=0;
2473
    H264Context *hx; ///< thread context
2474
    int context_count = 0;
2475
    int next_avc= h->is_avc ? 0 : buf_size;
2476

    
2477
    h->max_contexts = avctx->thread_count;
2478
#if 0
2479
    int i;
2480
    for(i=0; i<50; i++){
2481
        av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2482
    }
2483
#endif
2484
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2485
        h->current_slice = 0;
2486
        if (!s->first_field)
2487
            s->current_picture_ptr= NULL;
2488
        ff_h264_reset_sei(h);
2489
    }
2490

    
2491
    for(;;){
2492
        int consumed;
2493
        int dst_length;
2494
        int bit_length;
2495
        const uint8_t *ptr;
2496
        int i, nalsize = 0;
2497
        int err;
2498

    
2499
        if(buf_index >= next_avc) {
2500
            if(buf_index >= buf_size) break;
2501
            nalsize = 0;
2502
            for(i = 0; i < h->nal_length_size; i++)
2503
                nalsize = (nalsize << 8) | buf[buf_index++];
2504
            if(nalsize <= 1 || nalsize > buf_size - buf_index){
2505
                if(nalsize == 1){
2506
                    buf_index++;
2507
                    continue;
2508
                }else{
2509
                    av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2510
                    break;
2511
                }
2512
            }
2513
            next_avc= buf_index + nalsize;
2514
        } else {
2515
            // start code prefix search
2516
            for(; buf_index + 3 < next_avc; buf_index++){
2517
                // This should always succeed in the first iteration.
2518
                if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2519
                    break;
2520
            }
2521

    
2522
            if(buf_index+3 >= buf_size) break;
2523

    
2524
            buf_index+=3;
2525
            if(buf_index >= next_avc) continue;
2526
        }
2527

    
2528
        hx = h->thread_context[context_count];
2529

    
2530
        ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2531
        if (ptr==NULL || dst_length < 0){
2532
            return -1;
2533
        }
2534
        i= buf_index + consumed;
2535
        if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2536
           buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2537
            s->workaround_bugs |= FF_BUG_TRUNCATED;
2538

    
2539
        if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2540
        while(ptr[dst_length - 1] == 0 && dst_length > 0)
2541
            dst_length--;
2542
        }
2543
        bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2544

    
2545
        if(s->avctx->debug&FF_DEBUG_STARTCODE){
2546
            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);
2547
        }
2548

    
2549
        if (h->is_avc && (nalsize != consumed) && nalsize){
2550
            av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2551
        }
2552

    
2553
        buf_index += consumed;
2554

    
2555
        if(  (s->hurry_up == 1 && h->nal_ref_idc  == 0) //FIXME do not discard SEI id
2556
           ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc  == 0))
2557
            continue;
2558

    
2559
      again:
2560
        err = 0;
2561
        switch(hx->nal_unit_type){
2562
        case NAL_IDR_SLICE:
2563
            if (h->nal_unit_type != NAL_IDR_SLICE) {
2564
                av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2565
                return -1;
2566
            }
2567
            idr(h); //FIXME ensure we don't loose some frames if there is reordering
2568
        case NAL_SLICE:
2569
            init_get_bits(&hx->s.gb, ptr, bit_length);
2570
            hx->intra_gb_ptr=
2571
            hx->inter_gb_ptr= &hx->s.gb;
2572
            hx->s.data_partitioning = 0;
2573

    
2574
            if((err = decode_slice_header(hx, h)))
2575
               break;
2576

    
2577
            avctx->profile = hx->sps.profile_idc;
2578
            avctx->level   = hx->sps.level_idc;
2579

    
2580
            if (s->avctx->hwaccel && h->current_slice == 1) {
2581
                if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2582
                    return -1;
2583
            }
2584

    
2585
            s->current_picture_ptr->key_frame |=
2586
                    (hx->nal_unit_type == NAL_IDR_SLICE) ||
2587
                    (h->sei_recovery_frame_cnt >= 0);
2588
            if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2589
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2590
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2591
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2592
               && avctx->skip_frame < AVDISCARD_ALL){
2593
                if(avctx->hwaccel) {
2594
                    if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2595
                        return -1;
2596
                }else
2597
                if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2598
                    static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2599
                    ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2600
                    ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2601
                }else
2602
                    context_count++;
2603
            }
2604
            break;
2605
        case NAL_DPA:
2606
            init_get_bits(&hx->s.gb, ptr, bit_length);
2607
            hx->intra_gb_ptr=
2608
            hx->inter_gb_ptr= NULL;
2609

    
2610
            if ((err = decode_slice_header(hx, h)) < 0)
2611
                break;
2612

    
2613
            avctx->profile = hx->sps.profile_idc;
2614
            avctx->level   = hx->sps.level_idc;
2615

    
2616
            hx->s.data_partitioning = 1;
2617

    
2618
            break;
2619
        case NAL_DPB:
2620
            init_get_bits(&hx->intra_gb, ptr, bit_length);
2621
            hx->intra_gb_ptr= &hx->intra_gb;
2622
            break;
2623
        case NAL_DPC:
2624
            init_get_bits(&hx->inter_gb, ptr, bit_length);
2625
            hx->inter_gb_ptr= &hx->inter_gb;
2626

    
2627
            if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2628
               && s->context_initialized
2629
               && s->hurry_up < 5
2630
               && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2631
               && (avctx->skip_frame < AVDISCARD_BIDIR  || hx->slice_type_nos!=FF_B_TYPE)
2632
               && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2633
               && avctx->skip_frame < AVDISCARD_ALL)
2634
                context_count++;
2635
            break;
2636
        case NAL_SEI:
2637
            init_get_bits(&s->gb, ptr, bit_length);
2638
            ff_h264_decode_sei(h);
2639
            break;
2640
        case NAL_SPS:
2641
            init_get_bits(&s->gb, ptr, bit_length);
2642
            ff_h264_decode_seq_parameter_set(h);
2643

    
2644
            if(s->flags& CODEC_FLAG_LOW_DELAY)
2645
                s->low_delay=1;
2646

    
2647
            if(avctx->has_b_frames < 2)
2648
                avctx->has_b_frames= !s->low_delay;
2649
            break;
2650
        case NAL_PPS:
2651
            init_get_bits(&s->gb, ptr, bit_length);
2652

    
2653
            ff_h264_decode_picture_parameter_set(h, bit_length);
2654

    
2655
            break;
2656
        case NAL_AUD:
2657
        case NAL_END_SEQUENCE:
2658
        case NAL_END_STREAM:
2659
        case NAL_FILLER_DATA:
2660
        case NAL_SPS_EXT:
2661
        case NAL_AUXILIARY_SLICE:
2662
            break;
2663
        default:
2664
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2665
        }
2666

    
2667
        if(context_count == h->max_contexts) {
2668
            execute_decode_slices(h, context_count);
2669
            context_count = 0;
2670
        }
2671

    
2672
        if (err < 0)
2673
            av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2674
        else if(err == 1) {
2675
            /* Slice could not be decoded in parallel mode, copy down
2676
             * NAL unit stuff to context 0 and restart. Note that
2677
             * rbsp_buffer is not transferred, but since we no longer
2678
             * run in parallel mode this should not be an issue. */
2679
            h->nal_unit_type = hx->nal_unit_type;
2680
            h->nal_ref_idc   = hx->nal_ref_idc;
2681
            hx = h;
2682
            goto again;
2683
        }
2684
    }
2685
    if(context_count)
2686
        execute_decode_slices(h, context_count);
2687
    return buf_index;
2688
}
2689

    
2690
/**
2691
 * returns the number of bytes consumed for building the current frame
2692
 */
2693
static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2694
        if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2695
        if(pos+10>buf_size) pos=buf_size; // oops ;)
2696

    
2697
        return pos;
2698
}
2699

    
2700
static int decode_frame(AVCodecContext *avctx,
2701
                             void *data, int *data_size,
2702
                             AVPacket *avpkt)
2703
{
2704
    const uint8_t *buf = avpkt->data;
2705
    int buf_size = avpkt->size;
2706
    H264Context *h = avctx->priv_data;
2707
    MpegEncContext *s = &h->s;
2708
    AVFrame *pict = data;
2709
    int buf_index;
2710

    
2711
    s->flags= avctx->flags;
2712
    s->flags2= avctx->flags2;
2713

    
2714
   /* end of stream, output what is still in the buffers */
2715
    if (buf_size == 0) {
2716
        Picture *out;
2717
        int i, out_idx;
2718

    
2719
//FIXME factorize this with the output code below
2720
        out = h->delayed_pic[0];
2721
        out_idx = 0;
2722
        for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2723
            if(h->delayed_pic[i]->poc < out->poc){
2724
                out = h->delayed_pic[i];
2725
                out_idx = i;
2726
            }
2727

    
2728
        for(i=out_idx; h->delayed_pic[i]; i++)
2729
            h->delayed_pic[i] = h->delayed_pic[i+1];
2730

    
2731
        if(out){
2732
            *data_size = sizeof(AVFrame);
2733
            *pict= *(AVFrame*)out;
2734
        }
2735

    
2736
        return 0;
2737
    }
2738

    
2739
    buf_index=decode_nal_units(h, buf, buf_size);
2740
    if(buf_index < 0)
2741
        return -1;
2742

    
2743
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2744
        if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2745
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2746
        return -1;
2747
    }
2748

    
2749
    if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2750
        Picture *out = s->current_picture_ptr;
2751
        Picture *cur = s->current_picture_ptr;
2752
        int i, pics, out_of_order, out_idx;
2753

    
2754
        field_end(h);
2755

    
2756
        if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2757
            /* Wait for second field. */
2758
            *data_size = 0;
2759

    
2760
        } else {
2761
            cur->interlaced_frame = 0;
2762
            cur->repeat_pict = 0;
2763

    
2764
            /* Signal interlacing information externally. */
2765
            /* Prioritize picture timing SEI information over used decoding process if it exists. */
2766

    
2767
            if(h->sps.pic_struct_present_flag){
2768
                switch (h->sei_pic_struct)
2769
                {
2770
                case SEI_PIC_STRUCT_FRAME:
2771
                    break;
2772
                case SEI_PIC_STRUCT_TOP_FIELD:
2773
                case SEI_PIC_STRUCT_BOTTOM_FIELD:
2774
                    cur->interlaced_frame = 1;
2775
                    break;
2776
                case SEI_PIC_STRUCT_TOP_BOTTOM:
2777
                case SEI_PIC_STRUCT_BOTTOM_TOP:
2778
                    if (FIELD_OR_MBAFF_PICTURE)
2779
                        cur->interlaced_frame = 1;
2780
                    else
2781
                        // try to flag soft telecine progressive
2782
                        cur->interlaced_frame = h->prev_interlaced_frame;
2783
                    break;
2784
                case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2785
                case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2786
                    // Signal the possibility of telecined film externally (pic_struct 5,6)
2787
                    // From these hints, let the applications decide if they apply deinterlacing.
2788
                    cur->repeat_pict = 1;
2789
                    break;
2790
                case SEI_PIC_STRUCT_FRAME_DOUBLING:
2791
                    // Force progressive here, as doubling interlaced frame is a bad idea.
2792
                    cur->repeat_pict = 2;
2793
                    break;
2794
                case SEI_PIC_STRUCT_FRAME_TRIPLING:
2795
                    cur->repeat_pict = 4;
2796
                    break;
2797
                }
2798

    
2799
                if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2800
                    cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2801
            }else{
2802
                /* Derive interlacing flag from used decoding process. */
2803
                cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2804
            }
2805
            h->prev_interlaced_frame = cur->interlaced_frame;
2806

    
2807
            if (cur->field_poc[0] != cur->field_poc[1]){
2808
                /* Derive top_field_first from field pocs. */
2809
                cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2810
            }else{
2811
                if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2812
                    /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2813
                    if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2814
                      || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2815
                        cur->top_field_first = 1;
2816
                    else
2817
                        cur->top_field_first = 0;
2818
                }else{
2819
                    /* Most likely progressive */
2820
                    cur->top_field_first = 0;
2821
                }
2822
            }
2823

    
2824
        //FIXME do something with unavailable reference frames
2825

    
2826
            /* Sort B-frames into display order */
2827

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

    
2834
            if(   s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2835
               && !h->sps.bitstream_restriction_flag){
2836
                s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2837
                s->low_delay= 0;
2838
            }
2839

    
2840
            pics = 0;
2841
            while(h->delayed_pic[pics]) pics++;
2842

    
2843
            assert(pics <= MAX_DELAYED_PIC_COUNT);
2844

    
2845
            h->delayed_pic[pics++] = cur;
2846
            if(cur->reference == 0)
2847
                cur->reference = DELAYED_PIC_REF;
2848

    
2849
            out = h->delayed_pic[0];
2850
            out_idx = 0;
2851
            for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2852
                if(h->delayed_pic[i]->poc < out->poc){
2853
                    out = h->delayed_pic[i];
2854
                    out_idx = i;
2855
                }
2856
            if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2857
                h->outputed_poc= INT_MIN;
2858
            out_of_order = out->poc < h->outputed_poc;
2859

    
2860
            if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2861
                { }
2862
            else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2863
               || (s->low_delay &&
2864
                ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2865
                 || cur->pict_type == FF_B_TYPE)))
2866
            {
2867
                s->low_delay = 0;
2868
                s->avctx->has_b_frames++;
2869
            }
2870

    
2871
            if(out_of_order || pics > s->avctx->has_b_frames){
2872
                out->reference &= ~DELAYED_PIC_REF;
2873
                for(i=out_idx; h->delayed_pic[i]; i++)
2874
                    h->delayed_pic[i] = h->delayed_pic[i+1];
2875
            }
2876
            if(!out_of_order && pics > s->avctx->has_b_frames){
2877
                *data_size = sizeof(AVFrame);
2878

    
2879
                if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2880
                    h->outputed_poc = INT_MIN;
2881
                } else
2882
                    h->outputed_poc = out->poc;
2883
                *pict= *(AVFrame*)out;
2884
            }else{
2885
                av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2886
            }
2887
        }
2888
    }
2889

    
2890
    assert(pict->data[0] || !*data_size);
2891
    ff_print_debug_info(s, pict);
2892
//printf("out %d\n", (int)pict->data[0]);
2893

    
2894
    return get_consumed_bytes(s, buf_index, buf_size);
2895
}
2896
#if 0
2897
static inline void fill_mb_avail(H264Context *h){
2898
    MpegEncContext * const s = &h->s;
2899
    const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2900

2901
    if(s->mb_y){
2902
        h->mb_avail[0]= s->mb_x                 && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2903
        h->mb_avail[1]=                            h->slice_table[mb_xy - s->mb_stride    ] == h->slice_num;
2904
        h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2905
    }else{
2906
        h->mb_avail[0]=
2907
        h->mb_avail[1]=
2908
        h->mb_avail[2]= 0;
2909
    }
2910
    h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2911
    h->mb_avail[4]= 1; //FIXME move out
2912
    h->mb_avail[5]= 0; //FIXME move out
2913
}
2914
#endif
2915

    
2916
#ifdef TEST
2917
#undef printf
2918
#undef random
2919
#define COUNT 8000
2920
#define SIZE (COUNT*40)
2921
int main(void){
2922
    int i;
2923
    uint8_t temp[SIZE];
2924
    PutBitContext pb;
2925
    GetBitContext gb;
2926
//    int int_temp[10000];
2927
    DSPContext dsp;
2928
    AVCodecContext avctx;
2929

    
2930
    dsputil_init(&dsp, &avctx);
2931

    
2932
    init_put_bits(&pb, temp, SIZE);
2933
    printf("testing unsigned exp golomb\n");
2934
    for(i=0; i<COUNT; i++){
2935
        START_TIMER
2936
        set_ue_golomb(&pb, i);
2937
        STOP_TIMER("set_ue_golomb");
2938
    }
2939
    flush_put_bits(&pb);
2940

    
2941
    init_get_bits(&gb, temp, 8*SIZE);
2942
    for(i=0; i<COUNT; i++){
2943
        int j, s;
2944

    
2945
        s= show_bits(&gb, 24);
2946

    
2947
        START_TIMER
2948
        j= get_ue_golomb(&gb);
2949
        if(j != i){
2950
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2951
//            return -1;
2952
        }
2953
        STOP_TIMER("get_ue_golomb");
2954
    }
2955

    
2956

    
2957
    init_put_bits(&pb, temp, SIZE);
2958
    printf("testing signed exp golomb\n");
2959
    for(i=0; i<COUNT; i++){
2960
        START_TIMER
2961
        set_se_golomb(&pb, i - COUNT/2);
2962
        STOP_TIMER("set_se_golomb");
2963
    }
2964
    flush_put_bits(&pb);
2965

    
2966
    init_get_bits(&gb, temp, 8*SIZE);
2967
    for(i=0; i<COUNT; i++){
2968
        int j, s;
2969

    
2970
        s= show_bits(&gb, 24);
2971

    
2972
        START_TIMER
2973
        j= get_se_golomb(&gb);
2974
        if(j != i - COUNT/2){
2975
            printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2976
//            return -1;
2977
        }
2978
        STOP_TIMER("get_se_golomb");
2979
    }
2980

    
2981
#if 0
2982
    printf("testing 4x4 (I)DCT\n");
2983

2984
    DCTELEM block[16];
2985
    uint8_t src[16], ref[16];
2986
    uint64_t error= 0, max_error=0;
2987

2988
    for(i=0; i<COUNT; i++){
2989
        int j;
2990
//        printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2991
        for(j=0; j<16; j++){
2992
            ref[j]= random()%255;
2993
            src[j]= random()%255;
2994
        }
2995

2996
        h264_diff_dct_c(block, src, ref, 4);
2997

2998
        //normalize
2999
        for(j=0; j<16; j++){
3000
//            printf("%d ", block[j]);
3001
            block[j]= block[j]*4;
3002
            if(j&1) block[j]= (block[j]*4 + 2)/5;
3003
            if(j&4) block[j]= (block[j]*4 + 2)/5;
3004
        }
3005
//        printf("\n");
3006

3007
        s->dsp.h264_idct_add(ref, block, 4);
3008
/*        for(j=0; j<16; j++){
3009
            printf("%d ", ref[j]);
3010
        }
3011
        printf("\n");*/
3012

3013
        for(j=0; j<16; j++){
3014
            int diff= FFABS(src[j] - ref[j]);
3015

3016
            error+= diff*diff;
3017
            max_error= FFMAX(max_error, diff);
3018
        }
3019
    }
3020
    printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3021
    printf("testing quantizer\n");
3022
    for(qp=0; qp<52; qp++){
3023
        for(i=0; i<16; i++)
3024
            src1_block[i]= src2_block[i]= random()%255;
3025

3026
    }
3027
    printf("Testing NAL layer\n");
3028

3029
    uint8_t bitstream[COUNT];
3030
    uint8_t nal[COUNT*2];
3031
    H264Context h;
3032
    memset(&h, 0, sizeof(H264Context));
3033

3034
    for(i=0; i<COUNT; i++){
3035
        int zeros= i;
3036
        int nal_length;
3037
        int consumed;
3038
        int out_length;
3039
        uint8_t *out;
3040
        int j;
3041

3042
        for(j=0; j<COUNT; j++){
3043
            bitstream[j]= (random() % 255) + 1;
3044
        }
3045

3046
        for(j=0; j<zeros; j++){
3047
            int pos= random() % COUNT;
3048
            while(bitstream[pos] == 0){
3049
                pos++;
3050
                pos %= COUNT;
3051
            }
3052
            bitstream[pos]=0;
3053
        }
3054

3055
        START_TIMER
3056

3057
        nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3058
        if(nal_length<0){
3059
            printf("encoding failed\n");
3060
            return -1;
3061
        }
3062

3063
        out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3064

3065
        STOP_TIMER("NAL")
3066

3067
        if(out_length != COUNT){
3068
            printf("incorrect length %d %d\n", out_length, COUNT);
3069
            return -1;
3070
        }
3071

3072
        if(consumed != nal_length){
3073
            printf("incorrect consumed length %d %d\n", nal_length, consumed);
3074
            return -1;
3075
        }
3076

3077
        if(memcmp(bitstream, out, COUNT)){
3078
            printf("mismatch\n");
3079
            return -1;
3080
        }
3081
    }
3082
#endif
3083

    
3084
    printf("Testing RBSP\n");
3085

    
3086

    
3087
    return 0;
3088
}
3089
#endif /* TEST */
3090

    
3091

    
3092
av_cold void ff_h264_free_context(H264Context *h)
3093
{
3094
    int i;
3095

    
3096
    free_tables(h); //FIXME cleanup init stuff perhaps
3097

    
3098
    for(i = 0; i < MAX_SPS_COUNT; i++)
3099
        av_freep(h->sps_buffers + i);
3100

    
3101
    for(i = 0; i < MAX_PPS_COUNT; i++)
3102
        av_freep(h->pps_buffers + i);
3103
}
3104

    
3105
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3106
{
3107
    H264Context *h = avctx->priv_data;
3108
    MpegEncContext *s = &h->s;
3109

    
3110
    ff_h264_free_context(h);
3111

    
3112
    MPV_common_end(s);
3113

    
3114
//    memset(h, 0, sizeof(H264Context));
3115

    
3116
    return 0;
3117
}
3118

    
3119

    
3120
AVCodec h264_decoder = {
3121
    "h264",
3122
    CODEC_TYPE_VIDEO,
3123
    CODEC_ID_H264,
3124
    sizeof(H264Context),
3125
    ff_h264_decode_init,
3126
    NULL,
3127
    ff_h264_decode_end,
3128
    decode_frame,
3129
    /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3130
    .flush= flush_dpb,
3131
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3132
    .pix_fmts= ff_hwaccel_pixfmt_list_420,
3133
};
3134

    
3135
#if CONFIG_H264_VDPAU_DECODER
3136
AVCodec h264_vdpau_decoder = {
3137
    "h264_vdpau",
3138
    CODEC_TYPE_VIDEO,
3139
    CODEC_ID_H264,
3140
    sizeof(H264Context),
3141
    ff_h264_decode_init,
3142
    NULL,
3143
    ff_h264_decode_end,
3144
    decode_frame,
3145
    CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3146
    .flush= flush_dpb,
3147
    .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3148
    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3149
};
3150
#endif