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asfdec: also read Metadata Library Object
[FFMpeg-mirror/mplayer-patches.git] / libavcodec / h264.c
blob464c40338c51d0b2d28a39cca0c0f7ab19ff10f4
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include "libavutil/imgutils.h"
29 #include "internal.h"
30 #include "cabac.h"
31 #include "cabac_functions.h"
32 #include "dsputil.h"
33 #include "avcodec.h"
34 #include "mpegvideo.h"
35 #include "h264.h"
36 #include "h264data.h"
37 #include "h264chroma.h"
38 #include "h264_mvpred.h"
39 #include "golomb.h"
40 #include "mathops.h"
41 #include "rectangle.h"
42 #include "svq3.h"
43 #include "thread.h"
44 #include "vdpau_internal.h"
45 #include "libavutil/avassert.h"
46
47 // #undef NDEBUG
48 #include <assert.h>
49
50 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
51
52 static const uint8_t rem6[QP_MAX_NUM + 1] = {
53 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
54 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
55 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
56 };
57
58 static const uint8_t div6[QP_MAX_NUM + 1] = {
59 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
60 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
61 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10,
62 };
63
64 static const enum AVPixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
65 #if CONFIG_H264_DXVA2_HWACCEL
66 AV_PIX_FMT_DXVA2_VLD,
67 #endif
68 #if CONFIG_H264_VAAPI_HWACCEL
69 AV_PIX_FMT_VAAPI_VLD,
70 #endif
71 #if CONFIG_H264_VDA_HWACCEL
72 AV_PIX_FMT_VDA_VLD,
73 #endif
74 #if CONFIG_H264_VDPAU_HWACCEL
75 AV_PIX_FMT_VDPAU,
76 #endif
77 AV_PIX_FMT_YUVJ420P,
78 AV_PIX_FMT_NONE
79 };
80
81 /**
82 * Check if the top & left blocks are available if needed and
83 * change the dc mode so it only uses the available blocks.
84 */
85 int ff_h264_check_intra4x4_pred_mode(H264Context *h)
86 {
87 MpegEncContext *const s = &h->s;
88 static const int8_t top[12] = {
89 -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
90 };
91 static const int8_t left[12] = {
92 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
93 };
94 int i;
95
96 if (!(h->top_samples_available & 0x8000)) {
97 for (i = 0; i < 4; i++) {
98 int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]];
99 if (status < 0) {
100 av_log(h->s.avctx, AV_LOG_ERROR,
101 "top block unavailable for requested intra4x4 mode %d at %d %d\n",
102 status, s->mb_x, s->mb_y);
103 return -1;
104 } else if (status) {
105 h->intra4x4_pred_mode_cache[scan8[0] + i] = status;
106 }
107 }
108 }
109
110 if ((h->left_samples_available & 0x8888) != 0x8888) {
111 static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
112 for (i = 0; i < 4; i++)
113 if (!(h->left_samples_available & mask[i])) {
114 int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
115 if (status < 0) {
116 av_log(h->s.avctx, AV_LOG_ERROR,
117 "left block unavailable for requested intra4x4 mode %d at %d %d\n",
118 status, s->mb_x, s->mb_y);
119 return -1;
120 } else if (status) {
121 h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
122 }
123 }
124 }
125
126 return 0;
127 } // FIXME cleanup like ff_h264_check_intra_pred_mode
128
129 /**
130 * Check if the top & left blocks are available if needed and
131 * change the dc mode so it only uses the available blocks.
132 */
133 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
134 {
135 MpegEncContext *const s = &h->s;
136 static const int8_t top[7] = { LEFT_DC_PRED8x8, 1, -1, -1 };
137 static const int8_t left[7] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
138
139 if (mode > 6U) {
140 av_log(h->s.avctx, AV_LOG_ERROR,
141 "out of range intra chroma pred mode at %d %d\n",
142 s->mb_x, s->mb_y);
143 return -1;
144 }
145
146 if (!(h->top_samples_available & 0x8000)) {
147 mode = top[mode];
148 if (mode < 0) {
149 av_log(h->s.avctx, AV_LOG_ERROR,
150 "top block unavailable for requested intra mode at %d %d\n",
151 s->mb_x, s->mb_y);
152 return -1;
153 }
154 }
155
156 if ((h->left_samples_available & 0x8080) != 0x8080) {
157 mode = left[mode];
158 if (is_chroma && (h->left_samples_available & 0x8080)) {
159 // mad cow disease mode, aka MBAFF + constrained_intra_pred
160 mode = ALZHEIMER_DC_L0T_PRED8x8 +
161 (!(h->left_samples_available & 0x8000)) +
162 2 * (mode == DC_128_PRED8x8);
163 }
164 if (mode < 0) {
165 av_log(h->s.avctx, AV_LOG_ERROR,
166 "left block unavailable for requested intra mode at %d %d\n",
167 s->mb_x, s->mb_y);
168 return -1;
169 }
170 }
171
172 return mode;
173 }
174
175 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
176 int *dst_length, int *consumed, int length)
177 {
178 int i, si, di;
179 uint8_t *dst;
180 int bufidx;
181
182 // src[0]&0x80; // forbidden bit
183 h->nal_ref_idc = src[0] >> 5;
184 h->nal_unit_type = src[0] & 0x1F;
185
186 src++;
187 length--;
188
189 #define STARTCODE_TEST \
190 if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
191 if (src[i + 2] != 3) { \
192 /* startcode, so we must be past the end */ \
193 length = i; \
194 } \
195 break; \
196 }
197 #if HAVE_FAST_UNALIGNED
198 #define FIND_FIRST_ZERO \
199 if (i > 0 && !src[i]) \
200 i--; \
201 while (src[i]) \
202 i++
203 #if HAVE_FAST_64BIT
204 for (i = 0; i + 1 < length; i += 9) {
205 if (!((~AV_RN64A(src + i) &
206 (AV_RN64A(src + i) - 0x0100010001000101ULL)) &
207 0x8000800080008080ULL))
208 continue;
209 FIND_FIRST_ZERO;
210 STARTCODE_TEST;
211 i -= 7;
212 }
213 #else
214 for (i = 0; i + 1 < length; i += 5) {
215 if (!((~AV_RN32A(src + i) &
216 (AV_RN32A(src + i) - 0x01000101U)) &
217 0x80008080U))
218 continue;
219 FIND_FIRST_ZERO;
220 STARTCODE_TEST;
221 i -= 3;
222 }
223 #endif
224 #else
225 for (i = 0; i + 1 < length; i += 2) {
226 if (src[i])
227 continue;
228 if (i > 0 && src[i - 1] == 0)
229 i--;
230 STARTCODE_TEST;
231 }
232 #endif
233
234 if (i >= length - 1) { // no escaped 0
235 *dst_length = length;
236 *consumed = length + 1; // +1 for the header
237 return src;
238 }
239
240 // use second escape buffer for inter data
241 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0;
242 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx],
243 length + FF_INPUT_BUFFER_PADDING_SIZE);
244 dst = h->rbsp_buffer[bufidx];
245
246 if (dst == NULL)
247 return NULL;
248
249 memcpy(dst, src, i);
250 si = di = i;
251 while (si + 2 < length) {
252 // remove escapes (very rare 1:2^22)
253 if (src[si + 2] > 3) {
254 dst[di++] = src[si++];
255 dst[di++] = src[si++];
256 } else if (src[si] == 0 && src[si + 1] == 0) {
257 if (src[si + 2] == 3) { // escape
258 dst[di++] = 0;
259 dst[di++] = 0;
260 si += 3;
261 continue;
262 } else // next start code
263 goto nsc;
264 }
265
266 dst[di++] = src[si++];
267 }
268 while (si < length)
269 dst[di++] = src[si++];
270 nsc:
271
272 memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
273
274 *dst_length = di;
275 *consumed = si + 1; // +1 for the header
276 /* FIXME store exact number of bits in the getbitcontext
277 * (it is needed for decoding) */
278 return dst;
279 }
280
281 /**
282 * Identify the exact end of the bitstream
283 * @return the length of the trailing, or 0 if damaged
284 */
285 static int decode_rbsp_trailing(H264Context *h, const uint8_t *src)
286 {
287 int v = *src;
288 int r;
289
290 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
291
292 for (r = 1; r < 9; r++) {
293 if (v & 1)
294 return r;
295 v >>= 1;
296 }
297 return 0;
298 }
299
300 static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n,
301 int height, int y_offset, int list)
302 {
303 int raw_my = h->mv_cache[list][scan8[n]][1];
304 int filter_height_up = (raw_my & 3) ? 2 : 0;
305 int filter_height_down = (raw_my & 3) ? 3 : 0;
306 int full_my = (raw_my >> 2) + y_offset;
307 int top = full_my - filter_height_up;
308 int bottom = full_my + filter_height_down + height;
309
310 return FFMAX(abs(top), bottom);
311 }
312
313 static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n,
314 int height, int y_offset, int list0,
315 int list1, int *nrefs)
316 {
317 MpegEncContext *const s = &h->s;
318 int my;
319
320 y_offset += 16 * (s->mb_y >> MB_FIELD);
321
322 if (list0) {
323 int ref_n = h->ref_cache[0][scan8[n]];
324 Picture *ref = &h->ref_list[0][ref_n];
325
326 // Error resilience puts the current picture in the ref list.
327 // Don't try to wait on these as it will cause a deadlock.
328 // Fields can wait on each other, though.
329 if (ref->f.thread_opaque != s->current_picture.f.thread_opaque ||
330 (ref->f.reference & 3) != s->picture_structure) {
331 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
332 if (refs[0][ref_n] < 0)
333 nrefs[0] += 1;
334 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
335 }
336 }
337
338 if (list1) {
339 int ref_n = h->ref_cache[1][scan8[n]];
340 Picture *ref = &h->ref_list[1][ref_n];
341
342 if (ref->f.thread_opaque != s->current_picture.f.thread_opaque ||
343 (ref->f.reference & 3) != s->picture_structure) {
344 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
345 if (refs[1][ref_n] < 0)
346 nrefs[1] += 1;
347 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
348 }
349 }
350 }
351
352 /**
353 * Wait until all reference frames are available for MC operations.
354 *
355 * @param h the H264 context
356 */
357 static void await_references(H264Context *h)
358 {
359 MpegEncContext *const s = &h->s;
360 const int mb_xy = h->mb_xy;
361 const int mb_type = s->current_picture.f.mb_type[mb_xy];
362 int refs[2][48];
363 int nrefs[2] = { 0 };
364 int ref, list;
365
366 memset(refs, -1, sizeof(refs));
367
368 if (IS_16X16(mb_type)) {
369 get_lowest_part_y(h, refs, 0, 16, 0,
370 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
371 } else if (IS_16X8(mb_type)) {
372 get_lowest_part_y(h, refs, 0, 8, 0,
373 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
374 get_lowest_part_y(h, refs, 8, 8, 8,
375 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
376 } else if (IS_8X16(mb_type)) {
377 get_lowest_part_y(h, refs, 0, 16, 0,
378 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
379 get_lowest_part_y(h, refs, 4, 16, 0,
380 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
381 } else {
382 int i;
383
384 assert(IS_8X8(mb_type));
385
386 for (i = 0; i < 4; i++) {
387 const int sub_mb_type = h->sub_mb_type[i];
388 const int n = 4 * i;
389 int y_offset = (i & 2) << 2;
390
391 if (IS_SUB_8X8(sub_mb_type)) {
392 get_lowest_part_y(h, refs, n, 8, y_offset,
393 IS_DIR(sub_mb_type, 0, 0),
394 IS_DIR(sub_mb_type, 0, 1),
395 nrefs);
396 } else if (IS_SUB_8X4(sub_mb_type)) {
397 get_lowest_part_y(h, refs, n, 4, y_offset,
398 IS_DIR(sub_mb_type, 0, 0),
399 IS_DIR(sub_mb_type, 0, 1),
400 nrefs);
401 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,
402 IS_DIR(sub_mb_type, 0, 0),
403 IS_DIR(sub_mb_type, 0, 1),
404 nrefs);
405 } else if (IS_SUB_4X8(sub_mb_type)) {
406 get_lowest_part_y(h, refs, n, 8, y_offset,
407 IS_DIR(sub_mb_type, 0, 0),
408 IS_DIR(sub_mb_type, 0, 1),
409 nrefs);
410 get_lowest_part_y(h, refs, n + 1, 8, y_offset,
411 IS_DIR(sub_mb_type, 0, 0),
412 IS_DIR(sub_mb_type, 0, 1),
413 nrefs);
414 } else {
415 int j;
416 assert(IS_SUB_4X4(sub_mb_type));
417 for (j = 0; j < 4; j++) {
418 int sub_y_offset = y_offset + 2 * (j & 2);
419 get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,
420 IS_DIR(sub_mb_type, 0, 0),
421 IS_DIR(sub_mb_type, 0, 1),
422 nrefs);
423 }
424 }
425 }
426 }
427
428 for (list = h->list_count - 1; list >= 0; list--)
429 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
430 int row = refs[list][ref];
431 if (row >= 0) {
432 Picture *ref_pic = &h->ref_list[list][ref];
433 int ref_field = ref_pic->f.reference - 1;
434 int ref_field_picture = ref_pic->field_picture;
435 int pic_height = 16 * s->mb_height >> ref_field_picture;
436
437 row <<= MB_MBAFF;
438 nrefs[list]--;
439
440 if (!FIELD_PICTURE && ref_field_picture) { // frame referencing two fields
441 ff_thread_await_progress(&ref_pic->f,
442 FFMIN((row >> 1) - !(row & 1),
443 pic_height - 1),
444 1);
445 ff_thread_await_progress(&ref_pic->f,
446 FFMIN((row >> 1), pic_height - 1),
447 0);
448 } else if (FIELD_PICTURE && !ref_field_picture) { // field referencing one field of a frame
449 ff_thread_await_progress(&ref_pic->f,
450 FFMIN(row * 2 + ref_field,
451 pic_height - 1),
452 0);
453 } else if (FIELD_PICTURE) {
454 ff_thread_await_progress(&ref_pic->f,
455 FFMIN(row, pic_height - 1),
456 ref_field);
457 } else {
458 ff_thread_await_progress(&ref_pic->f,
459 FFMIN(row, pic_height - 1),
460 0);
461 }
462 }
463 }
464 }
465
466 static av_always_inline void mc_dir_part(H264Context *h, Picture *pic,
467 int n, int square, int height,
468 int delta, int list,
469 uint8_t *dest_y, uint8_t *dest_cb,
470 uint8_t *dest_cr,
471 int src_x_offset, int src_y_offset,
472 qpel_mc_func *qpix_op,
473 h264_chroma_mc_func chroma_op,
474 int pixel_shift, int chroma_idc)
475 {
476 MpegEncContext *const s = &h->s;
477 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
478 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
479 const int luma_xy = (mx & 3) + ((my & 3) << 2);
480 int offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;
481 uint8_t *src_y = pic->f.data[0] + offset;
482 uint8_t *src_cb, *src_cr;
483 int extra_width = h->emu_edge_width;
484 int extra_height = h->emu_edge_height;
485 int emu = 0;
486 const int full_mx = mx >> 2;
487 const int full_my = my >> 2;
488 const int pic_width = 16 * s->mb_width;
489 const int pic_height = 16 * s->mb_height >> MB_FIELD;
490 int ysh;
491
492 if (mx & 7)
493 extra_width -= 3;
494 if (my & 7)
495 extra_height -= 3;
496
497 if (full_mx < 0 - extra_width ||
498 full_my < 0 - extra_height ||
499 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
500 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
501 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
502 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,
503 h->mb_linesize,
504 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
505 full_my - 2, pic_width, pic_height);
506 src_y = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
507 emu = 1;
508 }
509
510 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?
511 if (!square)
512 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
513
514 if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
515 return;
516
517 if (chroma_idc == 3 /* yuv444 */) {
518 src_cb = pic->f.data[1] + offset;
519 if (emu) {
520 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
521 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,
522 h->mb_linesize,
523 16 + 5, 16 + 5 /*FIXME*/,
524 full_mx - 2, full_my - 2,
525 pic_width, pic_height);
526 src_cb = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
527 }
528 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?
529 if (!square)
530 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);
531
532 src_cr = pic->f.data[2] + offset;
533 if (emu) {
534 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
535 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,
536 h->mb_linesize,
537 16 + 5, 16 + 5 /*FIXME*/,
538 full_mx - 2, full_my - 2,
539 pic_width, pic_height);
540 src_cr = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
541 }
542 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?
543 if (!square)
544 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);
545 return;
546 }
547
548 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
549 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD) {
550 // chroma offset when predicting from a field of opposite parity
551 my += 2 * ((s->mb_y & 1) - (pic->f.reference - 1));
552 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
553 }
554
555 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +
556 (my >> ysh) * h->mb_uvlinesize;
557 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +
558 (my >> ysh) * h->mb_uvlinesize;
559
560 if (emu) {
561 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize,
562 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
563 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
564 src_cb = s->edge_emu_buffer;
565 }
566 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,
567 height >> (chroma_idc == 1 /* yuv420 */),
568 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
569
570 if (emu) {
571 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize,
572 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
573 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
574 src_cr = s->edge_emu_buffer;
575 }
576 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
577 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
578 }
579
580 static av_always_inline void mc_part_std(H264Context *h, int n, int square,
581 int height, int delta,
582 uint8_t *dest_y, uint8_t *dest_cb,
583 uint8_t *dest_cr,
584 int x_offset, int y_offset,
585 qpel_mc_func *qpix_put,
586 h264_chroma_mc_func chroma_put,
587 qpel_mc_func *qpix_avg,
588 h264_chroma_mc_func chroma_avg,
589 int list0, int list1,
590 int pixel_shift, int chroma_idc)
591 {
592 MpegEncContext *const s = &h->s;
593 qpel_mc_func *qpix_op = qpix_put;
594 h264_chroma_mc_func chroma_op = chroma_put;
595
596 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
597 if (chroma_idc == 3 /* yuv444 */) {
598 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
599 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
600 } else if (chroma_idc == 2 /* yuv422 */) {
601 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
602 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
603 } else { /* yuv420 */
604 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
605 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
606 }
607 x_offset += 8 * s->mb_x;
608 y_offset += 8 * (s->mb_y >> MB_FIELD);
609
610 if (list0) {
611 Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];
612 mc_dir_part(h, ref, n, square, height, delta, 0,
613 dest_y, dest_cb, dest_cr, x_offset, y_offset,
614 qpix_op, chroma_op, pixel_shift, chroma_idc);
615
616 qpix_op = qpix_avg;
617 chroma_op = chroma_avg;
618 }
619
620 if (list1) {
621 Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];
622 mc_dir_part(h, ref, n, square, height, delta, 1,
623 dest_y, dest_cb, dest_cr, x_offset, y_offset,
624 qpix_op, chroma_op, pixel_shift, chroma_idc);
625 }
626 }
627
628 static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,
629 int height, int delta,
630 uint8_t *dest_y, uint8_t *dest_cb,
631 uint8_t *dest_cr,
632 int x_offset, int y_offset,
633 qpel_mc_func *qpix_put,
634 h264_chroma_mc_func chroma_put,
635 h264_weight_func luma_weight_op,
636 h264_weight_func chroma_weight_op,
637 h264_biweight_func luma_weight_avg,
638 h264_biweight_func chroma_weight_avg,
639 int list0, int list1,
640 int pixel_shift, int chroma_idc)
641 {
642 MpegEncContext *const s = &h->s;
643 int chroma_height;
644
645 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
646 if (chroma_idc == 3 /* yuv444 */) {
647 chroma_height = height;
648 chroma_weight_avg = luma_weight_avg;
649 chroma_weight_op = luma_weight_op;
650 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
651 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
652 } else if (chroma_idc == 2 /* yuv422 */) {
653 chroma_height = height;
654 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
655 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
656 } else { /* yuv420 */
657 chroma_height = height >> 1;
658 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
659 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
660 }
661 x_offset += 8 * s->mb_x;
662 y_offset += 8 * (s->mb_y >> MB_FIELD);
663
664 if (list0 && list1) {
665 /* don't optimize for luma-only case, since B-frames usually
666 * use implicit weights => chroma too. */
667 uint8_t *tmp_cb = h->bipred_scratchpad;
668 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);
669 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;
670 int refn0 = h->ref_cache[0][scan8[n]];
671 int refn1 = h->ref_cache[1][scan8[n]];
672
673 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,
674 dest_y, dest_cb, dest_cr,
675 x_offset, y_offset, qpix_put, chroma_put,
676 pixel_shift, chroma_idc);
677 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,
678 tmp_y, tmp_cb, tmp_cr,
679 x_offset, y_offset, qpix_put, chroma_put,
680 pixel_shift, chroma_idc);
681
682 if (h->use_weight == 2) {
683 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y & 1];
684 int weight1 = 64 - weight0;
685 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,
686 height, 5, weight0, weight1, 0);
687 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,
688 chroma_height, 5, weight0, weight1, 0);
689 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,
690 chroma_height, 5, weight0, weight1, 0);
691 } else {
692 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,
693 h->luma_log2_weight_denom,
694 h->luma_weight[refn0][0][0],
695 h->luma_weight[refn1][1][0],
696 h->luma_weight[refn0][0][1] +
697 h->luma_weight[refn1][1][1]);
698 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,
699 h->chroma_log2_weight_denom,
700 h->chroma_weight[refn0][0][0][0],
701 h->chroma_weight[refn1][1][0][0],
702 h->chroma_weight[refn0][0][0][1] +
703 h->chroma_weight[refn1][1][0][1]);
704 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,
705 h->chroma_log2_weight_denom,
706 h->chroma_weight[refn0][0][1][0],
707 h->chroma_weight[refn1][1][1][0],
708 h->chroma_weight[refn0][0][1][1] +
709 h->chroma_weight[refn1][1][1][1]);
710 }
711 } else {
712 int list = list1 ? 1 : 0;
713 int refn = h->ref_cache[list][scan8[n]];
714 Picture *ref = &h->ref_list[list][refn];
715 mc_dir_part(h, ref, n, square, height, delta, list,
716 dest_y, dest_cb, dest_cr, x_offset, y_offset,
717 qpix_put, chroma_put, pixel_shift, chroma_idc);
718
719 luma_weight_op(dest_y, h->mb_linesize, height,
720 h->luma_log2_weight_denom,
721 h->luma_weight[refn][list][0],
722 h->luma_weight[refn][list][1]);
723 if (h->use_weight_chroma) {
724 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,
725 h->chroma_log2_weight_denom,
726 h->chroma_weight[refn][list][0][0],
727 h->chroma_weight[refn][list][0][1]);
728 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,
729 h->chroma_log2_weight_denom,
730 h->chroma_weight[refn][list][1][0],
731 h->chroma_weight[refn][list][1][1]);
732 }
733 }
734 }
735
736 static av_always_inline void prefetch_motion(H264Context *h, int list,
737 int pixel_shift, int chroma_idc)
738 {
739 /* fetch pixels for estimated mv 4 macroblocks ahead
740 * optimized for 64byte cache lines */
741 MpegEncContext *const s = &h->s;
742 const int refn = h->ref_cache[list][scan8[0]];
743 if (refn >= 0) {
744 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * s->mb_x + 8;
745 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * s->mb_y;
746 uint8_t **src = h->ref_list[list][refn].f.data;
747 int off = (mx << pixel_shift) +
748 (my + (s->mb_x & 3) * 4) * h->mb_linesize +
749 (64 << pixel_shift);
750 s->vdsp.prefetch(src[0] + off, s->linesize, 4);
751 if (chroma_idc == 3 /* yuv444 */) {
752 s->vdsp.prefetch(src[1] + off, s->linesize, 4);
753 s->vdsp.prefetch(src[2] + off, s->linesize, 4);
754 } else {
755 off = ((mx >> 1) << pixel_shift) +
756 ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize +
757 (64 << pixel_shift);
758 s->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
759 }
760 }
761 }
762
763 static void free_tables(H264Context *h, int free_rbsp)
764 {
765 int i;
766 H264Context *hx;
767
768 av_freep(&h->intra4x4_pred_mode);
769 av_freep(&h->chroma_pred_mode_table);
770 av_freep(&h->cbp_table);
771 av_freep(&h->mvd_table[0]);
772 av_freep(&h->mvd_table[1]);
773 av_freep(&h->direct_table);
774 av_freep(&h->non_zero_count);
775 av_freep(&h->slice_table_base);
776 h->slice_table = NULL;
777 av_freep(&h->list_counts);
778
779 av_freep(&h->mb2b_xy);
780 av_freep(&h->mb2br_xy);
781
782 for (i = 0; i < MAX_THREADS; i++) {
783 hx = h->thread_context[i];
784 if (!hx)
785 continue;
786 av_freep(&hx->top_borders[1]);
787 av_freep(&hx->top_borders[0]);
788 av_freep(&hx->bipred_scratchpad);
789 if (free_rbsp) {
790 av_freep(&hx->rbsp_buffer[1]);
791 av_freep(&hx->rbsp_buffer[0]);
792 hx->rbsp_buffer_size[0] = 0;
793 hx->rbsp_buffer_size[1] = 0;
794 }
795 if (i)
796 av_freep(&h->thread_context[i]);
797 }
798 }
799
800 static void init_dequant8_coeff_table(H264Context *h)
801 {
802 int i, j, q, x;
803 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
804
805 for (i = 0; i < 6; i++) {
806 h->dequant8_coeff[i] = h->dequant8_buffer[i];
807 for (j = 0; j < i; j++)
808 if (!memcmp(h->pps.scaling_matrix8[j], h->pps.scaling_matrix8[i],
809 64 * sizeof(uint8_t))) {
810 h->dequant8_coeff[i] = h->dequant8_buffer[j];
811 break;
812 }
813 if (j < i)
814 continue;
815
816 for (q = 0; q < max_qp + 1; q++) {
817 int shift = div6[q];
818 int idx = rem6[q];
819 for (x = 0; x < 64; x++)
820 h->dequant8_coeff[i][q][(x >> 3) | ((x & 7) << 3)] =
821 ((uint32_t)dequant8_coeff_init[idx][dequant8_coeff_init_scan[((x >> 1) & 12) | (x & 3)]] *
822 h->pps.scaling_matrix8[i][x]) << shift;
823 }
824 }
825 }
826
827 static void init_dequant4_coeff_table(H264Context *h)
828 {
829 int i, j, q, x;
830 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
831 for (i = 0; i < 6; i++) {
832 h->dequant4_coeff[i] = h->dequant4_buffer[i];
833 for (j = 0; j < i; j++)
834 if (!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i],
835 16 * sizeof(uint8_t))) {
836 h->dequant4_coeff[i] = h->dequant4_buffer[j];
837 break;
838 }
839 if (j < i)
840 continue;
841
842 for (q = 0; q < max_qp + 1; q++) {
843 int shift = div6[q] + 2;
844 int idx = rem6[q];
845 for (x = 0; x < 16; x++)
846 h->dequant4_coeff[i][q][(x >> 2) | ((x << 2) & 0xF)] =
847 ((uint32_t)dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] *
848 h->pps.scaling_matrix4[i][x]) << shift;
849 }
850 }
851 }
852
853 static void init_dequant_tables(H264Context *h)
854 {
855 int i, x;
856 init_dequant4_coeff_table(h);
857 if (h->pps.transform_8x8_mode)
858 init_dequant8_coeff_table(h);
859 if (h->sps.transform_bypass) {
860 for (i = 0; i < 6; i++)
861 for (x = 0; x < 16; x++)
862 h->dequant4_coeff[i][0][x] = 1 << 6;
863 if (h->pps.transform_8x8_mode)
864 for (i = 0; i < 6; i++)
865 for (x = 0; x < 64; x++)
866 h->dequant8_coeff[i][0][x] = 1 << 6;
867 }
868 }
869
870 int ff_h264_alloc_tables(H264Context *h)
871 {
872 MpegEncContext *const s = &h->s;
873 const int big_mb_num = s->mb_stride * (s->mb_height + 1);
874 const int row_mb_num = s->mb_stride * 2 * s->avctx->thread_count;
875 int x, y;
876
877 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode,
878 row_mb_num * 8 * sizeof(uint8_t), fail)
879 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count,
880 big_mb_num * 48 * sizeof(uint8_t), fail)
881 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base,
882 (big_mb_num + s->mb_stride) * sizeof(*h->slice_table_base), fail)
883 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table,
884 big_mb_num * sizeof(uint16_t), fail)
885 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table,
886 big_mb_num * sizeof(uint8_t), fail)
887 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0],
888 16 * row_mb_num * sizeof(uint8_t), fail);
889 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1],
890 16 * row_mb_num * sizeof(uint8_t), fail);
891 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table,
892 4 * big_mb_num * sizeof(uint8_t), fail);
893 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts,
894 big_mb_num * sizeof(uint8_t), fail)
895
896 memset(h->slice_table_base, -1,
897 (big_mb_num + s->mb_stride) * sizeof(*h->slice_table_base));
898 h->slice_table = h->slice_table_base + s->mb_stride * 2 + 1;
899
900 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy,
901 big_mb_num * sizeof(uint32_t), fail);
902 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy,
903 big_mb_num * sizeof(uint32_t), fail);
904 for (y = 0; y < s->mb_height; y++)
905 for (x = 0; x < s->mb_width; x++) {
906 const int mb_xy = x + y * s->mb_stride;
907 const int b_xy = 4 * x + 4 * y * h->b_stride;
908
909 h->mb2b_xy[mb_xy] = b_xy;
910 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * s->mb_stride)));
911 }
912
913 if (!h->dequant4_coeff[0])
914 init_dequant_tables(h);
915
916 return 0;
917
918 fail:
919 free_tables(h, 1);
920 return -1;
921 }
922
923 /**
924 * Mimic alloc_tables(), but for every context thread.
925 */
926 static void clone_tables(H264Context *dst, H264Context *src, int i)
927 {
928 MpegEncContext *const s = &src->s;
929 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i * 8 * 2 * s->mb_stride;
930 dst->non_zero_count = src->non_zero_count;
931 dst->slice_table = src->slice_table;
932 dst->cbp_table = src->cbp_table;
933 dst->mb2b_xy = src->mb2b_xy;
934 dst->mb2br_xy = src->mb2br_xy;
935 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
936 dst->mvd_table[0] = src->mvd_table[0] + i * 8 * 2 * s->mb_stride;
937 dst->mvd_table[1] = src->mvd_table[1] + i * 8 * 2 * s->mb_stride;
938 dst->direct_table = src->direct_table;
939 dst->list_counts = src->list_counts;
940 dst->bipred_scratchpad = NULL;
941 ff_h264_pred_init(&dst->hpc, src->s.codec_id, src->sps.bit_depth_luma,
942 src->sps.chroma_format_idc);
943 }
944
945 /**
946 * Init context
947 * Allocate buffers which are not shared amongst multiple threads.
948 */
949 static int context_init(H264Context *h)
950 {
951 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0],
952 h->s.mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
953 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1],
954 h->s.mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
955
956 h->ref_cache[0][scan8[5] + 1] =
957 h->ref_cache[0][scan8[7] + 1] =
958 h->ref_cache[0][scan8[13] + 1] =
959 h->ref_cache[1][scan8[5] + 1] =
960 h->ref_cache[1][scan8[7] + 1] =
961 h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
962
963 return 0;
964
965 fail:
966 return -1; // free_tables will clean up for us
967 }
968
969 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
970 int parse_extradata);
971
972 static av_cold void common_init(H264Context *h)
973 {
974 MpegEncContext *const s = &h->s;
975
976 s->width = s->avctx->width;
977 s->height = s->avctx->height;
978 s->codec_id = s->avctx->codec->id;
979
980 ff_h264dsp_init(&h->h264dsp, 8, 1);
981 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
982 ff_h264qpel_init(&h->h264qpel, 8);
983 ff_h264_pred_init(&h->hpc, s->codec_id, 8, 1);
984
985 h->dequant_coeff_pps = -1;
986 s->unrestricted_mv = 1;
987
988 /* needed so that IDCT permutation is known early */
989 ff_dsputil_init(&s->dsp, s->avctx);
990 ff_videodsp_init(&s->vdsp, 8);
991
992 memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t));
993 memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t));
994 }
995
996 int ff_h264_decode_extradata(H264Context *h)
997 {
998 AVCodecContext *avctx = h->s.avctx;
999
1000 if (avctx->extradata[0] == 1) {
1001 int i, cnt, nalsize;
1002 unsigned char *p = avctx->extradata;
1003
1004 h->is_avc = 1;
1005
1006 if (avctx->extradata_size < 7) {
1007 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
1008 return -1;
1009 }
1010 /* sps and pps in the avcC always have length coded with 2 bytes,
1011 * so put a fake nal_length_size = 2 while parsing them */
1012 h->nal_length_size = 2;
1013 // Decode sps from avcC
1014 cnt = *(p + 5) & 0x1f; // Number of sps
1015 p += 6;
1016 for (i = 0; i < cnt; i++) {
1017 nalsize = AV_RB16(p) + 2;
1018 if (p - avctx->extradata + nalsize > avctx->extradata_size)
1019 return -1;
1020 if (decode_nal_units(h, p, nalsize, 1) < 0) {
1021 av_log(avctx, AV_LOG_ERROR,
1022 "Decoding sps %d from avcC failed\n", i);
1023 return -1;
1024 }
1025 p += nalsize;
1026 }
1027 // Decode pps from avcC
1028 cnt = *(p++); // Number of pps
1029 for (i = 0; i < cnt; i++) {
1030 nalsize = AV_RB16(p) + 2;
1031 if (p - avctx->extradata + nalsize > avctx->extradata_size)
1032 return -1;
1033 if (decode_nal_units(h, p, nalsize, 1) < 0) {
1034 av_log(avctx, AV_LOG_ERROR,
1035 "Decoding pps %d from avcC failed\n", i);
1036 return -1;
1037 }
1038 p += nalsize;
1039 }
1040 // Now store right nal length size, that will be used to parse all other nals
1041 h->nal_length_size = (avctx->extradata[4] & 0x03) + 1;
1042 } else {
1043 h->is_avc = 0;
1044 if (decode_nal_units(h, avctx->extradata, avctx->extradata_size, 1) < 0)
1045 return -1;
1046 }
1047 return 0;
1048 }
1049
1050 av_cold int ff_h264_decode_init(AVCodecContext *avctx)
1051 {
1052 H264Context *h = avctx->priv_data;
1053 MpegEncContext *const s = &h->s;
1054 int i;
1055
1056 ff_MPV_decode_defaults(s);
1057
1058 s->avctx = avctx;
1059 common_init(h);
1060
1061 s->out_format = FMT_H264;
1062 s->workaround_bugs = avctx->workaround_bugs;
1063
1064 /* set defaults */
1065 // s->decode_mb = ff_h263_decode_mb;
1066 s->quarter_sample = 1;
1067 if (!avctx->has_b_frames)
1068 s->low_delay = 1;
1069
1070 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1071
1072 ff_h264_decode_init_vlc();
1073
1074 h->pixel_shift = 0;
1075 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
1076
1077 h->thread_context[0] = h;
1078 h->outputed_poc = h->next_outputed_poc = INT_MIN;
1079 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
1080 h->last_pocs[i] = INT_MIN;
1081 h->prev_poc_msb = 1 << 16;
1082 h->x264_build = -1;
1083 ff_h264_reset_sei(h);
1084 if (avctx->codec_id == AV_CODEC_ID_H264) {
1085 if (avctx->ticks_per_frame == 1)
1086 s->avctx->time_base.den *= 2;
1087 avctx->ticks_per_frame = 2;
1088 }
1089
1090 if (avctx->extradata_size > 0 && avctx->extradata &&
1091 ff_h264_decode_extradata(h))
1092 return -1;
1093
1094 if (h->sps.bitstream_restriction_flag &&
1095 s->avctx->has_b_frames < h->sps.num_reorder_frames) {
1096 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1097 s->low_delay = 0;
1098 }
1099
1100 return 0;
1101 }
1102
1103 #define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
1104
1105 static void copy_picture_range(Picture **to, Picture **from, int count,
1106 MpegEncContext *new_base,
1107 MpegEncContext *old_base)
1108 {
1109 int i;
1110
1111 for (i = 0; i < count; i++) {
1112 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
1113 IN_RANGE(from[i], old_base->picture,
1114 sizeof(Picture) * old_base->picture_count) ||
1115 !from[i]));
1116 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1117 }
1118 }
1119
1120 static void copy_parameter_set(void **to, void **from, int count, int size)
1121 {
1122 int i;
1123
1124 for (i = 0; i < count; i++) {
1125 if (to[i] && !from[i])
1126 av_freep(&to[i]);
1127 else if (from[i] && !to[i])
1128 to[i] = av_malloc(size);
1129
1130 if (from[i])
1131 memcpy(to[i], from[i], size);
1132 }
1133 }
1134
1135 static int decode_init_thread_copy(AVCodecContext *avctx)
1136 {
1137 H264Context *h = avctx->priv_data;
1138
1139 if (!avctx->internal->is_copy)
1140 return 0;
1141 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1142 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1143
1144 h->s.context_initialized = 0;
1145
1146 return 0;
1147 }
1148
1149 #define copy_fields(to, from, start_field, end_field) \
1150 memcpy(&to->start_field, &from->start_field, \
1151 (char *)&to->end_field - (char *)&to->start_field)
1152
1153 static int h264_slice_header_init(H264Context *, int);
1154
1155 static int h264_set_parameter_from_sps(H264Context *h);
1156
1157 static int decode_update_thread_context(AVCodecContext *dst,
1158 const AVCodecContext *src)
1159 {
1160 H264Context *h = dst->priv_data, *h1 = src->priv_data;
1161 MpegEncContext *const s = &h->s, *const s1 = &h1->s;
1162 int inited = s->context_initialized, err;
1163 int i;
1164
1165 if (dst == src || !s1->context_initialized)
1166 return 0;
1167
1168 if (inited &&
1169 (s->width != s1->width ||
1170 s->height != s1->height ||
1171 s->mb_width != s1->mb_width ||
1172 s->mb_height != s1->mb_height ||
1173 h->sps.bit_depth_luma != h1->sps.bit_depth_luma ||
1174 h->sps.chroma_format_idc != h1->sps.chroma_format_idc ||
1175 h->sps.colorspace != h1->sps.colorspace)) {
1176
1177 av_freep(&h->bipred_scratchpad);
1178
1179 s->width = s1->width;
1180 s->height = s1->height;
1181 s->mb_height = s1->mb_height;
1182 h->b_stride = h1->b_stride;
1183
1184 if ((err = h264_slice_header_init(h, 1)) < 0) {
1185 av_log(h->s.avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
1186 return err;
1187 }
1188 h->context_reinitialized = 1;
1189
1190 /* update linesize on resize for h264. The h264 decoder doesn't
1191 * necessarily call ff_MPV_frame_start in the new thread */
1192 s->linesize = s1->linesize;
1193 s->uvlinesize = s1->uvlinesize;
1194
1195 /* copy block_offset since frame_start may not be called */
1196 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
1197 h264_set_parameter_from_sps(h);
1198 }
1199
1200 err = ff_mpeg_update_thread_context(dst, src);
1201 if (err)
1202 return err;
1203
1204 if (!inited) {
1205 for (i = 0; i < MAX_SPS_COUNT; i++)
1206 av_freep(h->sps_buffers + i);
1207
1208 for (i = 0; i < MAX_PPS_COUNT; i++)
1209 av_freep(h->pps_buffers + i);
1210
1211 // copy all fields after MpegEnc
1212 memcpy(&h->s + 1, &h1->s + 1,
1213 sizeof(H264Context) - sizeof(MpegEncContext));
1214 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1215 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1216 if (ff_h264_alloc_tables(h) < 0) {
1217 av_log(dst, AV_LOG_ERROR, "Could not allocate memory for h264\n");
1218 return AVERROR(ENOMEM);
1219 }
1220 context_init(h);
1221
1222 for (i = 0; i < 2; i++) {
1223 h->rbsp_buffer[i] = NULL;
1224 h->rbsp_buffer_size[i] = 0;
1225 }
1226 h->bipred_scratchpad = NULL;
1227
1228 h->thread_context[0] = h;
1229
1230 s->dsp.clear_blocks(h->mb);
1231 s->dsp.clear_blocks(h->mb + (24 * 16 << h->pixel_shift));
1232 }
1233
1234 /* frame_start may not be called for the next thread (if it's decoding
1235 * a bottom field) so this has to be allocated here */
1236 if (!h->bipred_scratchpad)
1237 h->bipred_scratchpad = av_malloc(16 * 6 * s->linesize);
1238
1239 // extradata/NAL handling
1240 h->is_avc = h1->is_avc;
1241
1242 // SPS/PPS
1243 copy_parameter_set((void **)h->sps_buffers, (void **)h1->sps_buffers,
1244 MAX_SPS_COUNT, sizeof(SPS));
1245 h->sps = h1->sps;
1246 copy_parameter_set((void **)h->pps_buffers, (void **)h1->pps_buffers,
1247 MAX_PPS_COUNT, sizeof(PPS));
1248 h->pps = h1->pps;
1249
1250 // Dequantization matrices
1251 // FIXME these are big - can they be only copied when PPS changes?
1252 copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1253
1254 for (i = 0; i < 6; i++)
1255 h->dequant4_coeff[i] = h->dequant4_buffer[0] +
1256 (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
1257
1258 for (i = 0; i < 6; i++)
1259 h->dequant8_coeff[i] = h->dequant8_buffer[0] +
1260 (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
1261
1262 h->dequant_coeff_pps = h1->dequant_coeff_pps;
1263
1264 // POC timing
1265 copy_fields(h, h1, poc_lsb, redundant_pic_count);
1266
1267 // reference lists
1268 copy_fields(h, h1, ref_count, list_count);
1269 copy_fields(h, h1, ref2frm, intra_gb);
1270 copy_fields(h, h1, short_ref, cabac_init_idc);
1271
1272 copy_picture_range(h->short_ref, h1->short_ref, 32, s, s1);
1273 copy_picture_range(h->long_ref, h1->long_ref, 32, s, s1);
1274 copy_picture_range(h->delayed_pic, h1->delayed_pic,
1275 MAX_DELAYED_PIC_COUNT + 2, s, s1);
1276
1277 h->last_slice_type = h1->last_slice_type;
1278
1279 if (!s->current_picture_ptr)
1280 return 0;
1281
1282 if (!s->droppable) {
1283 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1284 h->prev_poc_msb = h->poc_msb;
1285 h->prev_poc_lsb = h->poc_lsb;
1286 }
1287 h->prev_frame_num_offset = h->frame_num_offset;
1288 h->prev_frame_num = h->frame_num;
1289 h->outputed_poc = h->next_outputed_poc;
1290
1291 return err;
1292 }
1293
1294 int ff_h264_frame_start(H264Context *h)
1295 {
1296 MpegEncContext *const s = &h->s;
1297 int i;
1298 const int pixel_shift = h->pixel_shift;
1299
1300 if (ff_MPV_frame_start(s, s->avctx) < 0)
1301 return -1;
1302 ff_er_frame_start(s);
1303 /*
1304 * ff_MPV_frame_start uses pict_type to derive key_frame.
1305 * This is incorrect for H.264; IDR markings must be used.
1306 * Zero here; IDR markings per slice in frame or fields are ORed in later.
1307 * See decode_nal_units().
1308 */
1309 s->current_picture_ptr->f.key_frame = 0;
1310 s->current_picture_ptr->mmco_reset = 0;
1311
1312 assert(s->linesize && s->uvlinesize);
1313
1314 for (i = 0; i < 16; i++) {
1315 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * s->linesize * ((scan8[i] - scan8[0]) >> 3);
1316 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * s->linesize * ((scan8[i] - scan8[0]) >> 3);
1317 }
1318 for (i = 0; i < 16; i++) {
1319 h->block_offset[16 + i] =
1320 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * s->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1321 h->block_offset[48 + 16 + i] =
1322 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * s->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1323 }
1324
1325 /* can't be in alloc_tables because linesize isn't known there.
1326 * FIXME: redo bipred weight to not require extra buffer? */
1327 for (i = 0; i < s->slice_context_count; i++)
1328 if (h->thread_context[i] && !h->thread_context[i]->bipred_scratchpad)
1329 h->thread_context[i]->bipred_scratchpad = av_malloc(16 * 6 * s->linesize);
1330
1331 /* Some macroblocks can be accessed before they're available in case
1332 * of lost slices, MBAFF or threading. */
1333 memset(h->slice_table, -1,
1334 (s->mb_height * s->mb_stride - 1) * sizeof(*h->slice_table));
1335
1336 // s->decode = (s->flags & CODEC_FLAG_PSNR) || !s->encoding ||
1337 // s->current_picture.f.reference /* || h->contains_intra */ || 1;
1338
1339 /* We mark the current picture as non-reference after allocating it, so
1340 * that if we break out due to an error it can be released automatically
1341 * in the next ff_MPV_frame_start().
1342 * SVQ3 as well as most other codecs have only last/next/current and thus
1343 * get released even with set reference, besides SVQ3 and others do not
1344 * mark frames as reference later "naturally". */
1345 if (s->codec_id != AV_CODEC_ID_SVQ3)
1346 s->current_picture_ptr->f.reference = 0;
1347
1348 s->current_picture_ptr->field_poc[0] =
1349 s->current_picture_ptr->field_poc[1] = INT_MAX;
1350
1351 h->next_output_pic = NULL;
1352
1353 assert(s->current_picture_ptr->long_ref == 0);
1354
1355 return 0;
1356 }
1357
1358 /**
1359 * Run setup operations that must be run after slice header decoding.
1360 * This includes finding the next displayed frame.
1361 *
1362 * @param h h264 master context
1363 * @param setup_finished enough NALs have been read that we can call
1364 * ff_thread_finish_setup()
1365 */
1366 static void decode_postinit(H264Context *h, int setup_finished)
1367 {
1368 MpegEncContext *const s = &h->s;
1369 Picture *out = s->current_picture_ptr;
1370 Picture *cur = s->current_picture_ptr;
1371 int i, pics, out_of_order, out_idx;
1372 int invalid = 0, cnt = 0;
1373
1374 s->current_picture_ptr->f.qscale_type = FF_QSCALE_TYPE_H264;
1375 s->current_picture_ptr->f.pict_type = s->pict_type;
1376
1377 if (h->next_output_pic)
1378 return;
1379
1380 if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
1381 /* FIXME: if we have two PAFF fields in one packet, we can't start
1382 * the next thread here. If we have one field per packet, we can.
1383 * The check in decode_nal_units() is not good enough to find this
1384 * yet, so we assume the worst for now. */
1385 // if (setup_finished)
1386 // ff_thread_finish_setup(s->avctx);
1387 return;
1388 }
1389
1390 cur->f.interlaced_frame = 0;
1391 cur->f.repeat_pict = 0;
1392
1393 /* Signal interlacing information externally. */
1394 /* Prioritize picture timing SEI information over used
1395 * decoding process if it exists. */
1396
1397 if (h->sps.pic_struct_present_flag) {
1398 switch (h->sei_pic_struct) {
1399 case SEI_PIC_STRUCT_FRAME:
1400 break;
1401 case SEI_PIC_STRUCT_TOP_FIELD:
1402 case SEI_PIC_STRUCT_BOTTOM_FIELD:
1403 cur->f.interlaced_frame = 1;
1404 break;
1405 case SEI_PIC_STRUCT_TOP_BOTTOM:
1406 case SEI_PIC_STRUCT_BOTTOM_TOP:
1407 if (FIELD_OR_MBAFF_PICTURE)
1408 cur->f.interlaced_frame = 1;
1409 else
1410 // try to flag soft telecine progressive
1411 cur->f.interlaced_frame = h->prev_interlaced_frame;
1412 break;
1413 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1414 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1415 /* Signal the possibility of telecined film externally
1416 * (pic_struct 5,6). From these hints, let the applications
1417 * decide if they apply deinterlacing. */
1418 cur->f.repeat_pict = 1;
1419 break;
1420 case SEI_PIC_STRUCT_FRAME_DOUBLING:
1421 cur->f.repeat_pict = 2;
1422 break;
1423 case SEI_PIC_STRUCT_FRAME_TRIPLING:
1424 cur->f.repeat_pict = 4;
1425 break;
1426 }
1427
1428 if ((h->sei_ct_type & 3) &&
1429 h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
1430 cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0;
1431 } else {
1432 /* Derive interlacing flag from used decoding process. */
1433 cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE;
1434 }
1435 h->prev_interlaced_frame = cur->f.interlaced_frame;
1436
1437 if (cur->field_poc[0] != cur->field_poc[1]) {
1438 /* Derive top_field_first from field pocs. */
1439 cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1];
1440 } else {
1441 if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) {
1442 /* Use picture timing SEI information. Even if it is a
1443 * information of a past frame, better than nothing. */
1444 if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
1445 h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1446 cur->f.top_field_first = 1;
1447 else
1448 cur->f.top_field_first = 0;
1449 } else {
1450 /* Most likely progressive */
1451 cur->f.top_field_first = 0;
1452 }
1453 }
1454
1455 // FIXME do something with unavailable reference frames
1456
1457 /* Sort B-frames into display order */
1458
1459 if (h->sps.bitstream_restriction_flag &&
1460 s->avctx->has_b_frames < h->sps.num_reorder_frames) {
1461 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1462 s->low_delay = 0;
1463 }
1464
1465 if (s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
1466 !h->sps.bitstream_restriction_flag) {
1467 s->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1;
1468 s->low_delay = 0;
1469 }
1470
1471 pics = 0;
1472 while (h->delayed_pic[pics])
1473 pics++;
1474
1475 assert(pics <= MAX_DELAYED_PIC_COUNT);
1476
1477 h->delayed_pic[pics++] = cur;
1478 if (cur->f.reference == 0)
1479 cur->f.reference = DELAYED_PIC_REF;
1480
1481 /* Frame reordering. This code takes pictures from coding order and sorts
1482 * them by their incremental POC value into display order. It supports POC
1483 * gaps, MMCO reset codes and random resets.
1484 * A "display group" can start either with a IDR frame (f.key_frame = 1),
1485 * and/or can be closed down with a MMCO reset code. In sequences where
1486 * there is no delay, we can't detect that (since the frame was already
1487 * output to the user), so we also set h->mmco_reset to detect the MMCO
1488 * reset code.
1489 * FIXME: if we detect insufficient delays (as per s->avctx->has_b_frames),
1490 * we increase the delay between input and output. All frames affected by
1491 * the lag (e.g. those that should have been output before another frame
1492 * that we already returned to the user) will be dropped. This is a bug
1493 * that we will fix later. */
1494 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
1495 cnt += out->poc < h->last_pocs[i];
1496 invalid += out->poc == INT_MIN;
1497 }
1498 if (!h->mmco_reset && !cur->f.key_frame &&
1499 cnt + invalid == MAX_DELAYED_PIC_COUNT && cnt > 0) {
1500 h->mmco_reset = 2;
1501 if (pics > 1)
1502 h->delayed_pic[pics - 2]->mmco_reset = 2;
1503 }
1504 if (h->mmco_reset || cur->f.key_frame) {
1505 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
1506 h->last_pocs[i] = INT_MIN;
1507 cnt = 0;
1508 invalid = MAX_DELAYED_PIC_COUNT;
1509 }
1510 out = h->delayed_pic[0];
1511 out_idx = 0;
1512 for (i = 1; i < MAX_DELAYED_PIC_COUNT &&
1513 h->delayed_pic[i] &&
1514 !h->delayed_pic[i - 1]->mmco_reset &&
1515 !h->delayed_pic[i]->f.key_frame;
1516 i++)
1517 if (h->delayed_pic[i]->poc < out->poc) {
1518 out = h->delayed_pic[i];
1519 out_idx = i;
1520 }
1521 if (s->avctx->has_b_frames == 0 &&
1522 (h->delayed_pic[0]->f.key_frame || h->mmco_reset))
1523 h->next_outputed_poc = INT_MIN;
1524 out_of_order = !out->f.key_frame && !h->mmco_reset &&
1525 (out->poc < h->next_outputed_poc);
1526
1527 if (h->sps.bitstream_restriction_flag &&
1528 s->avctx->has_b_frames >= h->sps.num_reorder_frames) {
1529 } else if (out_of_order && pics - 1 == s->avctx->has_b_frames &&
1530 s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT) {
1531 if (invalid + cnt < MAX_DELAYED_PIC_COUNT) {
1532 s->avctx->has_b_frames = FFMAX(s->avctx->has_b_frames, cnt);
1533 }
1534 s->low_delay = 0;
1535 } else if (s->low_delay &&
1536 ((h->next_outputed_poc != INT_MIN &&
1537 out->poc > h->next_outputed_poc + 2) ||
1538 cur->f.pict_type == AV_PICTURE_TYPE_B)) {
1539 s->low_delay = 0;
1540 s->avctx->has_b_frames++;
1541 }
1542
1543 if (pics > s->avctx->has_b_frames) {
1544 out->f.reference &= ~DELAYED_PIC_REF;
1545 // for frame threading, the owner must be the second field's thread or
1546 // else the first thread can release the picture and reuse it unsafely
1547 out->owner2 = s;
1548 for (i = out_idx; h->delayed_pic[i]; i++)
1549 h->delayed_pic[i] = h->delayed_pic[i + 1];
1550 }
1551 memmove(h->last_pocs, &h->last_pocs[1],
1552 sizeof(*h->last_pocs) * (MAX_DELAYED_PIC_COUNT - 1));
1553 h->last_pocs[MAX_DELAYED_PIC_COUNT - 1] = cur->poc;
1554 if (!out_of_order && pics > s->avctx->has_b_frames) {
1555 h->next_output_pic = out;
1556 if (out->mmco_reset) {
1557 if (out_idx > 0) {
1558 h->next_outputed_poc = out->poc;
1559 h->delayed_pic[out_idx - 1]->mmco_reset = out->mmco_reset;
1560 } else {
1561 h->next_outputed_poc = INT_MIN;
1562 }
1563 } else {
1564 if (out_idx == 0 && pics > 1 && h->delayed_pic[0]->f.key_frame) {
1565 h->next_outputed_poc = INT_MIN;
1566 } else {
1567 h->next_outputed_poc = out->poc;
1568 }
1569 }
1570 h->mmco_reset = 0;
1571 } else {
1572 av_log(s->avctx, AV_LOG_DEBUG, "no picture\n");
1573 }
1574
1575 if (setup_finished)
1576 ff_thread_finish_setup(s->avctx);
1577 }
1578
1579 static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y,
1580 uint8_t *src_cb, uint8_t *src_cr,
1581 int linesize, int uvlinesize,
1582 int simple)
1583 {
1584 MpegEncContext *const s = &h->s;
1585 uint8_t *top_border;
1586 int top_idx = 1;
1587 const int pixel_shift = h->pixel_shift;
1588 int chroma444 = CHROMA444;
1589 int chroma422 = CHROMA422;
1590
1591 src_y -= linesize;
1592 src_cb -= uvlinesize;
1593 src_cr -= uvlinesize;
1594
1595 if (!simple && FRAME_MBAFF) {
1596 if (s->mb_y & 1) {
1597 if (!MB_MBAFF) {
1598 top_border = h->top_borders[0][s->mb_x];
1599 AV_COPY128(top_border, src_y + 15 * linesize);
1600 if (pixel_shift)
1601 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
1602 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1603 if (chroma444) {
1604 if (pixel_shift) {
1605 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
1606 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
1607 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
1608 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
1609 } else {
1610 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
1611 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
1612 }
1613 } else if (chroma422) {
1614 if (pixel_shift) {
1615 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
1616 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
1617 } else {
1618 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
1619 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
1620 }
1621 } else {
1622 if (pixel_shift) {
1623 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
1624 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
1625 } else {
1626 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
1627 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
1628 }
1629 }
1630 }
1631 }
1632 } else if (MB_MBAFF) {
1633 top_idx = 0;
1634 } else
1635 return;
1636 }
1637
1638 top_border = h->top_borders[top_idx][s->mb_x];
1639 /* There are two lines saved, the line above the top macroblock
1640 * of a pair, and the line above the bottom macroblock. */
1641 AV_COPY128(top_border, src_y + 16 * linesize);
1642 if (pixel_shift)
1643 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
1644
1645 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1646 if (chroma444) {
1647 if (pixel_shift) {
1648 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
1649 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
1650 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
1651 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
1652 } else {
1653 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
1654 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
1655 }
1656 } else if (chroma422) {
1657 if (pixel_shift) {
1658 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
1659 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
1660 } else {
1661 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
1662 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
1663 }
1664 } else {
1665 if (pixel_shift) {
1666 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
1667 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
1668 } else {
1669 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
1670 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
1671 }
1672 }
1673 }
1674 }
1675
1676 static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
1677 uint8_t *src_cb, uint8_t *src_cr,
1678 int linesize, int uvlinesize,
1679 int xchg, int chroma444,
1680 int simple, int pixel_shift)
1681 {
1682 MpegEncContext *const s = &h->s;
1683 int deblock_topleft;
1684 int deblock_top;
1685 int top_idx = 1;
1686 uint8_t *top_border_m1;
1687 uint8_t *top_border;
1688
1689 if (!simple && FRAME_MBAFF) {
1690 if (s->mb_y & 1) {
1691 if (!MB_MBAFF)
1692 return;
1693 } else {
1694 top_idx = MB_MBAFF ? 0 : 1;
1695 }
1696 }
1697
1698 if (h->deblocking_filter == 2) {
1699 deblock_topleft = h->slice_table[h->mb_xy - 1 - s->mb_stride] == h->slice_num;
1700 deblock_top = h->top_type;
1701 } else {
1702 deblock_topleft = (s->mb_x > 0);
1703 deblock_top = (s->mb_y > !!MB_FIELD);
1704 }
1705
1706 src_y -= linesize + 1 + pixel_shift;
1707 src_cb -= uvlinesize + 1 + pixel_shift;
1708 src_cr -= uvlinesize + 1 + pixel_shift;
1709
1710 top_border_m1 = h->top_borders[top_idx][s->mb_x - 1];
1711 top_border = h->top_borders[top_idx][s->mb_x];
1712
1713 #define XCHG(a, b, xchg) \
1714 if (pixel_shift) { \
1715 if (xchg) { \
1716 AV_SWAP64(b + 0, a + 0); \
1717 AV_SWAP64(b + 8, a + 8); \
1718 } else { \
1719 AV_COPY128(b, a); \
1720 } \
1721 } else if (xchg) \
1722 AV_SWAP64(b, a); \
1723 else \
1724 AV_COPY64(b, a);
1725
1726 if (deblock_top) {
1727 if (deblock_topleft) {
1728 XCHG(top_border_m1 + (8 << pixel_shift),
1729 src_y - (7 << pixel_shift), 1);
1730 }
1731 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
1732 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
1733 if (s->mb_x + 1 < s->mb_width) {
1734 XCHG(h->top_borders[top_idx][s->mb_x + 1],
1735 src_y + (17 << pixel_shift), 1);
1736 }
1737 }
1738 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1739 if (chroma444) {
1740 if (deblock_topleft) {
1741 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1742 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1743 }
1744 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
1745 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
1746 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
1747 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
1748 if (s->mb_x + 1 < s->mb_width) {
1749 XCHG(h->top_borders[top_idx][s->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
1750 XCHG(h->top_borders[top_idx][s->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
1751 }
1752 } else {
1753 if (deblock_top) {
1754 if (deblock_topleft) {
1755 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1756 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1757 }
1758 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
1759 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
1760 }
1761 }
1762 }
1763 }
1764
1765 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
1766 int index)
1767 {
1768 if (high_bit_depth) {
1769 return AV_RN32A(((int32_t *)mb) + index);
1770 } else
1771 return AV_RN16A(mb + index);
1772 }
1773
1774 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
1775 int index, int value)
1776 {
1777 if (high_bit_depth) {
1778 AV_WN32A(((int32_t *)mb) + index, value);
1779 } else
1780 AV_WN16A(mb + index, value);
1781 }
1782
1783 static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
1784 int mb_type, int is_h264,
1785 int simple,
1786 int transform_bypass,
1787 int pixel_shift,
1788 int *block_offset,
1789 int linesize,
1790 uint8_t *dest_y, int p)
1791 {
1792 MpegEncContext *const s = &h->s;
1793 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
1794 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
1795 int i;
1796 int qscale = p == 0 ? s->qscale : h->chroma_qp[p - 1];
1797 block_offset += 16 * p;
1798 if (IS_INTRA4x4(mb_type)) {
1799 if (simple || !s->encoding) {
1800 if (IS_8x8DCT(mb_type)) {
1801 if (transform_bypass) {
1802 idct_dc_add =
1803 idct_add = s->dsp.add_pixels8;
1804 } else {
1805 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1806 idct_add = h->h264dsp.h264_idct8_add;
1807 }
1808 for (i = 0; i < 16; i += 4) {
1809 uint8_t *const ptr = dest_y + block_offset[i];
1810 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
1811 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
1812 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1813 } else {
1814 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
1815 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
1816 (h->topright_samples_available << i) & 0x4000, linesize);
1817 if (nnz) {
1818 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1819 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1820 else
1821 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1822 }
1823 }
1824 }
1825 } else {
1826 if (transform_bypass) {
1827 idct_dc_add =
1828 idct_add = s->dsp.add_pixels4;
1829 } else {
1830 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1831 idct_add = h->h264dsp.h264_idct_add;
1832 }
1833 for (i = 0; i < 16; i++) {
1834 uint8_t *const ptr = dest_y + block_offset[i];
1835 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
1836
1837 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
1838 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1839 } else {
1840 uint8_t *topright;
1841 int nnz, tr;
1842 uint64_t tr_high;
1843 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
1844 const int topright_avail = (h->topright_samples_available << i) & 0x8000;
1845 assert(s->mb_y || linesize <= block_offset[i]);
1846 if (!topright_avail) {
1847 if (pixel_shift) {
1848 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
1849 topright = (uint8_t *)&tr_high;
1850 } else {
1851 tr = ptr[3 - linesize] * 0x01010101u;
1852 topright = (uint8_t *)&tr;
1853 }
1854 } else
1855 topright = ptr + (4 << pixel_shift) - linesize;
1856 } else
1857 topright = NULL;
1858
1859 h->hpc.pred4x4[dir](ptr, topright, linesize);
1860 nnz = h->non_zero_count_cache[scan8[i + p * 16]];
1861 if (nnz) {
1862 if (is_h264) {
1863 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1864 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1865 else
1866 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1867 } else if (CONFIG_SVQ3_DECODER)
1868 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
1869 }
1870 }
1871 }
1872 }
1873 }
1874 } else {
1875 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);
1876 if (is_h264) {
1877 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
1878 if (!transform_bypass)
1879 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),
1880 h->mb_luma_dc[p],
1881 h->dequant4_coeff[p][qscale][0]);
1882 else {
1883 static const uint8_t dc_mapping[16] = {
1884 0 * 16, 1 * 16, 4 * 16, 5 * 16,
1885 2 * 16, 3 * 16, 6 * 16, 7 * 16,
1886 8 * 16, 9 * 16, 12 * 16, 13 * 16,
1887 10 * 16, 11 * 16, 14 * 16, 15 * 16 };
1888 for (i = 0; i < 16; i++)
1889 dctcoef_set(h->mb + (p * 256 << pixel_shift),
1890 pixel_shift, dc_mapping[i],
1891 dctcoef_get(h->mb_luma_dc[p],
1892 pixel_shift, i));
1893 }
1894 }
1895 } else if (CONFIG_SVQ3_DECODER)
1896 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
1897 h->mb_luma_dc[p], qscale);
1898 }
1899 }
1900
1901 static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,
1902 int is_h264, int simple,
1903 int transform_bypass,
1904 int pixel_shift,
1905 int *block_offset,
1906 int linesize,
1907 uint8_t *dest_y, int p)
1908 {
1909 MpegEncContext *const s = &h->s;
1910 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
1911 int i;
1912 block_offset += 16 * p;
1913 if (!IS_INTRA4x4(mb_type)) {
1914 if (is_h264) {
1915 if (IS_INTRA16x16(mb_type)) {
1916 if (transform_bypass) {
1917 if (h->sps.profile_idc == 244 &&
1918 (h->intra16x16_pred_mode == VERT_PRED8x8 ||
1919 h->intra16x16_pred_mode == HOR_PRED8x8)) {
1920 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,
1921 h->mb + (p * 256 << pixel_shift),
1922 linesize);
1923 } else {
1924 for (i = 0; i < 16; i++)
1925 if (h->non_zero_count_cache[scan8[i + p * 16]] ||
1926 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1927 s->dsp.add_pixels4(dest_y + block_offset[i],
1928 h->mb + (i * 16 + p * 256 << pixel_shift),
1929 linesize);
1930 }
1931 } else {
1932 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
1933 h->mb + (p * 256 << pixel_shift),
1934 linesize,
1935 h->non_zero_count_cache + p * 5 * 8);
1936 }
1937 } else if (h->cbp & 15) {
1938 if (transform_bypass) {
1939 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1940 idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8
1941 : s->dsp.add_pixels4;
1942 for (i = 0; i < 16; i += di)
1943 if (h->non_zero_count_cache[scan8[i + p * 16]])
1944 idct_add(dest_y + block_offset[i],
1945 h->mb + (i * 16 + p * 256 << pixel_shift),
1946 linesize);
1947 } else {
1948 if (IS_8x8DCT(mb_type))
1949 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
1950 h->mb + (p * 256 << pixel_shift),
1951 linesize,
1952 h->non_zero_count_cache + p * 5 * 8);
1953 else
1954 h->h264dsp.h264_idct_add16(dest_y, block_offset,
1955 h->mb + (p * 256 << pixel_shift),
1956 linesize,
1957 h->non_zero_count_cache + p * 5 * 8);
1958 }
1959 }
1960 } else if (CONFIG_SVQ3_DECODER) {
1961 for (i = 0; i < 16; i++)
1962 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {
1963 // FIXME benchmark weird rule, & below
1964 uint8_t *const ptr = dest_y + block_offset[i];
1965 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,
1966 s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1967 }
1968 }
1969 }
1970 }
1971
1972 #define BITS 8
1973 #define SIMPLE 1
1974 #include "h264_mb_template.c"
1975
1976 #undef BITS
1977 #define BITS 16
1978 #include "h264_mb_template.c"
1979
1980 #undef SIMPLE
1981 #define SIMPLE 0
1982 #include "h264_mb_template.c"
1983
1984 void ff_h264_hl_decode_mb(H264Context *h)
1985 {
1986 MpegEncContext *const s = &h->s;
1987 const int mb_xy = h->mb_xy;
1988 const int mb_type = s->current_picture.f.mb_type[mb_xy];
1989 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1990
1991 if (CHROMA444) {
1992 if (is_complex || h->pixel_shift)
1993 hl_decode_mb_444_complex(h);
1994 else
1995 hl_decode_mb_444_simple_8(h);
1996 } else if (is_complex) {
1997 hl_decode_mb_complex(h);
1998 } else if (h->pixel_shift) {
1999 hl_decode_mb_simple_16(h);
2000 } else
2001 hl_decode_mb_simple_8(h);
2002 }
2003
2004 static int pred_weight_table(H264Context *h)
2005 {
2006 MpegEncContext *const s = &h->s;
2007 int list, i;
2008 int luma_def, chroma_def;
2009
2010 h->use_weight = 0;
2011 h->use_weight_chroma = 0;
2012 h->luma_log2_weight_denom = get_ue_golomb(&s->gb);
2013 if (h->sps.chroma_format_idc)
2014 h->chroma_log2_weight_denom = get_ue_golomb(&s->gb);
2015 luma_def = 1 << h->luma_log2_weight_denom;
2016 chroma_def = 1 << h->chroma_log2_weight_denom;
2017
2018 for (list = 0; list < 2; list++) {
2019 h->luma_weight_flag[list] = 0;
2020 h->chroma_weight_flag[list] = 0;
2021 for (i = 0; i < h->ref_count[list]; i++) {
2022 int luma_weight_flag, chroma_weight_flag;
2023
2024 luma_weight_flag = get_bits1(&s->gb);
2025 if (luma_weight_flag) {
2026 h->luma_weight[i][list][0] = get_se_golomb(&s->gb);
2027 h->luma_weight[i][list][1] = get_se_golomb(&s->gb);
2028 if (h->luma_weight[i][list][0] != luma_def ||
2029 h->luma_weight[i][list][1] != 0) {
2030 h->use_weight = 1;
2031 h->luma_weight_flag[list] = 1;
2032 }
2033 } else {
2034 h->luma_weight[i][list][0] = luma_def;
2035 h->luma_weight[i][list][1] = 0;
2036 }
2037
2038 if (h->sps.chroma_format_idc) {
2039 chroma_weight_flag = get_bits1(&s->gb);
2040 if (chroma_weight_flag) {
2041 int j;
2042 for (j = 0; j < 2; j++) {
2043 h->chroma_weight[i][list][j][0] = get_se_golomb(&s->gb);
2044 h->chroma_weight[i][list][j][1] = get_se_golomb(&s->gb);
2045 if (h->chroma_weight[i][list][j][0] != chroma_def ||
2046 h->chroma_weight[i][list][j][1] != 0) {
2047 h->use_weight_chroma = 1;
2048 h->chroma_weight_flag[list] = 1;
2049 }
2050 }
2051 } else {
2052 int j;
2053 for (j = 0; j < 2; j++) {
2054 h->chroma_weight[i][list][j][0] = chroma_def;
2055 h->chroma_weight[i][list][j][1] = 0;
2056 }
2057 }
2058 }
2059 }
2060 if (h->slice_type_nos != AV_PICTURE_TYPE_B)
2061 break;
2062 }
2063 h->use_weight = h->use_weight || h->use_weight_chroma;
2064 return 0;
2065 }
2066
2067 /**
2068 * Initialize implicit_weight table.
2069 * @param field 0/1 initialize the weight for interlaced MBAFF
2070 * -1 initializes the rest
2071 */
2072 static void implicit_weight_table(H264Context *h, int field)
2073 {
2074 MpegEncContext *const s = &h->s;
2075 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
2076
2077 for (i = 0; i < 2; i++) {
2078 h->luma_weight_flag[i] = 0;
2079 h->chroma_weight_flag[i] = 0;
2080 }
2081
2082 if (field < 0) {
2083 if (s->picture_structure == PICT_FRAME) {
2084 cur_poc = s->current_picture_ptr->poc;
2085 } else {
2086 cur_poc = s->current_picture_ptr->field_poc[s->picture_structure - 1];
2087 }
2088 if (h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF &&
2089 h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2 * cur_poc) {
2090 h->use_weight = 0;
2091 h->use_weight_chroma = 0;
2092 return;
2093 }
2094 ref_start = 0;
2095 ref_count0 = h->ref_count[0];
2096 ref_count1 = h->ref_count[1];
2097 } else {
2098 cur_poc = s->current_picture_ptr->field_poc[field];
2099 ref_start = 16;
2100 ref_count0 = 16 + 2 * h->ref_count[0];
2101 ref_count1 = 16 + 2 * h->ref_count[1];
2102 }
2103
2104 h->use_weight = 2;
2105 h->use_weight_chroma = 2;
2106 h->luma_log2_weight_denom = 5;
2107 h->chroma_log2_weight_denom = 5;
2108
2109 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
2110 int poc0 = h->ref_list[0][ref0].poc;
2111 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
2112 int w = 32;
2113 if (!h->ref_list[0][ref0].long_ref && !h->ref_list[1][ref1].long_ref) {
2114 int poc1 = h->ref_list[1][ref1].poc;
2115 int td = av_clip(poc1 - poc0, -128, 127);
2116 if (td) {
2117 int tb = av_clip(cur_poc - poc0, -128, 127);
2118 int tx = (16384 + (FFABS(td) >> 1)) / td;
2119 int dist_scale_factor = (tb * tx + 32) >> 8;
2120 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
2121 w = 64 - dist_scale_factor;
2122 }
2123 }
2124 if (field < 0) {
2125 h->implicit_weight[ref0][ref1][0] =
2126 h->implicit_weight[ref0][ref1][1] = w;
2127 } else {
2128 h->implicit_weight[ref0][ref1][field] = w;
2129 }
2130 }
2131 }
2132 }
2133
2134 /**
2135 * instantaneous decoder refresh.
2136 */
2137 static void idr(H264Context *h)
2138 {
2139 ff_h264_remove_all_refs(h);
2140 h->prev_frame_num = 0;
2141 h->prev_frame_num_offset = 0;
2142 h->prev_poc_msb =
2143 h->prev_poc_lsb = 0;
2144 }
2145
2146 /* forget old pics after a seek */
2147 static void flush_change(H264Context *h)
2148 {
2149 int i;
2150 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
2151 h->last_pocs[i] = INT_MIN;
2152 h->outputed_poc = h->next_outputed_poc = INT_MIN;
2153 h->prev_interlaced_frame = 1;
2154 idr(h);
2155 if (h->s.current_picture_ptr)
2156 h->s.current_picture_ptr->f.reference = 0;
2157 h->s.first_field = 0;
2158 memset(h->ref_list[0], 0, sizeof(h->ref_list[0]));
2159 memset(h->ref_list[1], 0, sizeof(h->ref_list[1]));
2160 memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0]));
2161 memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1]));
2162 ff_h264_reset_sei(h);
2163 }
2164
2165 /* forget old pics after a seek */
2166 static void flush_dpb(AVCodecContext *avctx)
2167 {
2168 H264Context *h = avctx->priv_data;
2169 int i;
2170
2171 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) {
2172 if (h->delayed_pic[i])
2173 h->delayed_pic[i]->f.reference = 0;
2174 h->delayed_pic[i] = NULL;
2175 }
2176
2177 flush_change(h);
2178 ff_mpeg_flush(avctx);
2179 }
2180
2181 static int init_poc(H264Context *h)
2182 {
2183 MpegEncContext *const s = &h->s;
2184 const int max_frame_num = 1 << h->sps.log2_max_frame_num;
2185 int field_poc[2];
2186 Picture *cur = s->current_picture_ptr;
2187
2188 h->frame_num_offset = h->prev_frame_num_offset;
2189 if (h->frame_num < h->prev_frame_num)
2190 h->frame_num_offset += max_frame_num;
2191
2192 if (h->sps.poc_type == 0) {
2193 const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb;
2194
2195 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2)
2196 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
2197 else if (h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2)
2198 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2199 else
2200 h->poc_msb = h->prev_poc_msb;
2201 field_poc[0] =
2202 field_poc[1] = h->poc_msb + h->poc_lsb;
2203 if (s->picture_structure == PICT_FRAME)
2204 field_poc[1] += h->delta_poc_bottom;
2205 } else if (h->sps.poc_type == 1) {
2206 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2207 int i;
2208
2209 if (h->sps.poc_cycle_length != 0)
2210 abs_frame_num = h->frame_num_offset + h->frame_num;
2211 else
2212 abs_frame_num = 0;
2213
2214 if (h->nal_ref_idc == 0 && abs_frame_num > 0)
2215 abs_frame_num--;
2216
2217 expected_delta_per_poc_cycle = 0;
2218 for (i = 0; i < h->sps.poc_cycle_length; i++)
2219 // FIXME integrate during sps parse
2220 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i];
2221
2222 if (abs_frame_num > 0) {
2223 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2224 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2225
2226 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
2227 for (i = 0; i <= frame_num_in_poc_cycle; i++)
2228 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i];
2229 } else
2230 expectedpoc = 0;
2231
2232 if (h->nal_ref_idc == 0)
2233 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
2234
2235 field_poc[0] = expectedpoc + h->delta_poc[0];
2236 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2237
2238 if (s->picture_structure == PICT_FRAME)
2239 field_poc[1] += h->delta_poc[1];
2240 } else {
2241 int poc = 2 * (h->frame_num_offset + h->frame_num);
2242
2243 if (!h->nal_ref_idc)
2244 poc--;
2245
2246 field_poc[0] = poc;
2247 field_poc[1] = poc;
2248 }
2249
2250 if (s->picture_structure != PICT_BOTTOM_FIELD)
2251 s->current_picture_ptr->field_poc[0] = field_poc[0];
2252 if (s->picture_structure != PICT_TOP_FIELD)
2253 s->current_picture_ptr->field_poc[1] = field_poc[1];
2254 cur->poc = FFMIN(cur->field_poc[0], cur->field_poc[1]);
2255
2256 return 0;
2257 }
2258
2259 /**
2260 * initialize scan tables
2261 */
2262 static void init_scan_tables(H264Context *h)
2263 {
2264 int i;
2265 for (i = 0; i < 16; i++) {
2266 #define T(x) (x >> 2) | ((x << 2) & 0xF)
2267 h->zigzag_scan[i] = T(zigzag_scan[i]);
2268 h->field_scan[i] = T(field_scan[i]);
2269 #undef T
2270 }
2271 for (i = 0; i < 64; i++) {
2272 #define T(x) (x >> 3) | ((x & 7) << 3)
2273 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
2274 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
2275 h->field_scan8x8[i] = T(field_scan8x8[i]);
2276 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
2277 #undef T
2278 }
2279 if (h->sps.transform_bypass) { // FIXME same ugly
2280 h->zigzag_scan_q0 = zigzag_scan;
2281 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
2282 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
2283 h->field_scan_q0 = field_scan;
2284 h->field_scan8x8_q0 = field_scan8x8;
2285 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
2286 } else {
2287 h->zigzag_scan_q0 = h->zigzag_scan;
2288 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
2289 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
2290 h->field_scan_q0 = h->field_scan;
2291 h->field_scan8x8_q0 = h->field_scan8x8;
2292 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
2293 }
2294 }
2295
2296 static int field_end(H264Context *h, int in_setup)
2297 {
2298 MpegEncContext *const s = &h->s;
2299 AVCodecContext *const avctx = s->avctx;
2300 int err = 0;
2301 s->mb_y = 0;
2302
2303 if (!in_setup && !s->droppable)
2304 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
2305 s->picture_structure == PICT_BOTTOM_FIELD);
2306
2307 if (CONFIG_H264_VDPAU_DECODER &&
2308 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2309 ff_vdpau_h264_set_reference_frames(s);
2310
2311 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
2312 if (!s->droppable) {
2313 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2314 h->prev_poc_msb = h->poc_msb;
2315 h->prev_poc_lsb = h->poc_lsb;
2316 }
2317 h->prev_frame_num_offset = h->frame_num_offset;
2318 h->prev_frame_num = h->frame_num;
2319 h->outputed_poc = h->next_outputed_poc;
2320 }
2321
2322 if (avctx->hwaccel) {
2323 if (avctx->hwaccel->end_frame(avctx) < 0)
2324 av_log(avctx, AV_LOG_ERROR,
2325 "hardware accelerator failed to decode picture\n");
2326 }
2327
2328 if (CONFIG_H264_VDPAU_DECODER &&
2329 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2330 ff_vdpau_h264_picture_complete(s);
2331
2332 /*
2333 * FIXME: Error handling code does not seem to support interlaced
2334 * when slices span multiple rows
2335 * The ff_er_add_slice calls don't work right for bottom
2336 * fields; they cause massive erroneous error concealing
2337 * Error marking covers both fields (top and bottom).
2338 * This causes a mismatched s->error_count
2339 * and a bad error table. Further, the error count goes to
2340 * INT_MAX when called for bottom field, because mb_y is
2341 * past end by one (callers fault) and resync_mb_y != 0
2342 * causes problems for the first MB line, too.
2343 */
2344 if (!FIELD_PICTURE)
2345 ff_er_frame_end(s);
2346
2347 ff_MPV_frame_end(s);
2348
2349 h->current_slice = 0;
2350
2351 return err;
2352 }
2353
2354 /**
2355 * Replicate H264 "master" context to thread contexts.
2356 */
2357 static int clone_slice(H264Context *dst, H264Context *src)
2358 {
2359 int ret;
2360
2361 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
2362 dst->s.current_picture_ptr = src->s.current_picture_ptr;
2363 dst->s.current_picture = src->s.current_picture;
2364 dst->s.linesize = src->s.linesize;
2365 dst->s.uvlinesize = src->s.uvlinesize;
2366 dst->s.first_field = src->s.first_field;
2367
2368 if (!dst->s.edge_emu_buffer &&
2369 (ret = ff_mpv_frame_size_alloc(&dst->s, dst->s.linesize))) {
2370 av_log(dst->s.avctx, AV_LOG_ERROR,
2371 "Failed to allocate scratch buffers\n");
2372 return ret;
2373 }
2374
2375 dst->prev_poc_msb = src->prev_poc_msb;
2376 dst->prev_poc_lsb = src->prev_poc_lsb;
2377 dst->prev_frame_num_offset = src->prev_frame_num_offset;
2378 dst->prev_frame_num = src->prev_frame_num;
2379 dst->short_ref_count = src->short_ref_count;
2380
2381 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
2382 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
2383 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
2384
2385 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
2386 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
2387
2388 return 0;
2389 }
2390
2391 /**
2392 * Compute profile from profile_idc and constraint_set?_flags.
2393 *
2394 * @param sps SPS
2395 *
2396 * @return profile as defined by FF_PROFILE_H264_*
2397 */
2398 int ff_h264_get_profile(SPS *sps)
2399 {
2400 int profile = sps->profile_idc;
2401
2402 switch (sps->profile_idc) {
2403 case FF_PROFILE_H264_BASELINE:
2404 // constraint_set1_flag set to 1
2405 profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0;
2406 break;
2407 case FF_PROFILE_H264_HIGH_10:
2408 case FF_PROFILE_H264_HIGH_422:
2409 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
2410 // constraint_set3_flag set to 1
2411 profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0;
2412 break;
2413 }
2414
2415 return profile;
2416 }
2417
2418 static int h264_set_parameter_from_sps(H264Context *h)
2419 {
2420 MpegEncContext *s = &h->s;
2421
2422 if (s->flags & CODEC_FLAG_LOW_DELAY ||
2423 (h->sps.bitstream_restriction_flag &&
2424 !h->sps.num_reorder_frames)) {
2425 if (s->avctx->has_b_frames > 1 || h->delayed_pic[0])
2426 av_log(h->s.avctx, AV_LOG_WARNING, "Delayed frames seen. "
2427 "Reenabling low delay requires a codec flush.\n");
2428 else
2429 s->low_delay = 1;
2430 }
2431
2432 if (s->avctx->has_b_frames < 2)
2433 s->avctx->has_b_frames = !s->low_delay;
2434
2435 if (s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
2436 h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
2437 if (s->avctx->codec &&
2438 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU &&
2439 (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) {
2440 av_log(s->avctx, AV_LOG_ERROR,
2441 "VDPAU decoding does not support video colorspace.\n");
2442 return AVERROR_INVALIDDATA;
2443 }
2444 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
2445 s->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
2446 h->cur_chroma_format_idc = h->sps.chroma_format_idc;
2447 h->pixel_shift = h->sps.bit_depth_luma > 8;
2448
2449 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma,
2450 h->sps.chroma_format_idc);
2451 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
2452 ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma);
2453 ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma,
2454 h->sps.chroma_format_idc);
2455 s->dsp.dct_bits = h->sps.bit_depth_luma > 8 ? 32 : 16;
2456 ff_dsputil_init(&s->dsp, s->avctx);
2457 ff_videodsp_init(&s->vdsp, h->sps.bit_depth_luma);
2458 } else {
2459 av_log(s->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
2460 h->sps.bit_depth_luma);
2461 return AVERROR_INVALIDDATA;
2462 }
2463 }
2464 return 0;
2465 }
2466
2467 static enum PixelFormat get_pixel_format(H264Context *h)
2468 {
2469 MpegEncContext *const s = &h->s;
2470 switch (h->sps.bit_depth_luma) {
2471 case 9:
2472 if (CHROMA444) {
2473 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2474 return AV_PIX_FMT_GBRP9;
2475 } else
2476 return AV_PIX_FMT_YUV444P9;
2477 } else if (CHROMA422)
2478 return AV_PIX_FMT_YUV422P9;
2479 else
2480 return AV_PIX_FMT_YUV420P9;
2481 break;
2482 case 10:
2483 if (CHROMA444) {
2484 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2485 return AV_PIX_FMT_GBRP10;
2486 } else
2487 return AV_PIX_FMT_YUV444P10;
2488 } else if (CHROMA422)
2489 return AV_PIX_FMT_YUV422P10;
2490 else
2491 return AV_PIX_FMT_YUV420P10;
2492 break;
2493 case 8:
2494 if (CHROMA444) {
2495 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2496 return AV_PIX_FMT_GBRP;
2497 } else
2498 return s->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ444P
2499 : AV_PIX_FMT_YUV444P;
2500 } else if (CHROMA422) {
2501 return s->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ422P
2502 : AV_PIX_FMT_YUV422P;
2503 } else {
2504 return s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts ?
2505 s->avctx->codec->pix_fmts :
2506 s->avctx->color_range == AVCOL_RANGE_JPEG ?
2507 hwaccel_pixfmt_list_h264_jpeg_420 :
2508 ff_hwaccel_pixfmt_list_420);
2509 }
2510 break;
2511 default:
2512 av_log(s->avctx, AV_LOG_ERROR,
2513 "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
2514 return AVERROR_INVALIDDATA;
2515 }
2516 }
2517
2518 static int h264_slice_header_init(H264Context *h, int reinit)
2519 {
2520 MpegEncContext *const s = &h->s;
2521 int i, ret;
2522
2523 avcodec_set_dimensions(s->avctx, s->width, s->height);
2524 s->avctx->sample_aspect_ratio = h->sps.sar;
2525 av_assert0(s->avctx->sample_aspect_ratio.den);
2526
2527 if (h->sps.timing_info_present_flag) {
2528 int64_t den = h->sps.time_scale;
2529 if (h->x264_build < 44U)
2530 den *= 2;
2531 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
2532 h->sps.num_units_in_tick, den, 1 << 30);
2533 }
2534
2535 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
2536
2537 if (reinit) {
2538 free_tables(h, 0);
2539 if ((ret = ff_MPV_common_frame_size_change(s)) < 0) {
2540 av_log(h->s.avctx, AV_LOG_ERROR, "ff_MPV_common_frame_size_change() failed.\n");
2541 return ret;
2542 }
2543 } else {
2544 if ((ret = ff_MPV_common_init(s)) < 0) {
2545 av_log(h->s.avctx, AV_LOG_ERROR, "ff_MPV_common_init() failed.\n");
2546 return ret;
2547 }
2548 }
2549 s->first_field = 0;
2550 h->prev_interlaced_frame = 1;
2551
2552 init_scan_tables(h);
2553 if (ff_h264_alloc_tables(h) < 0) {
2554 av_log(h->s.avctx, AV_LOG_ERROR,
2555 "Could not allocate memory for h264\n");
2556 return AVERROR(ENOMEM);
2557 }
2558
2559 if (!HAVE_THREADS || !(s->avctx->active_thread_type & FF_THREAD_SLICE)) {
2560 if (context_init(h) < 0) {
2561 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2562 return -1;
2563 }
2564 } else {
2565 for (i = 1; i < s->slice_context_count; i++) {
2566 H264Context *c;
2567 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
2568 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
2569 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
2570 c->h264dsp = h->h264dsp;
2571 c->h264qpel = h->h264qpel;
2572 c->sps = h->sps;
2573 c->pps = h->pps;
2574 c->pixel_shift = h->pixel_shift;
2575 init_scan_tables(c);
2576 clone_tables(c, h, i);
2577 }
2578
2579 for (i = 0; i < s->slice_context_count; i++)
2580 if (context_init(h->thread_context[i]) < 0) {
2581 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2582 return -1;
2583 }
2584 }
2585
2586 return 0;
2587 }
2588
2589 /**
2590 * Decode a slice header.
2591 * This will also call ff_MPV_common_init() and frame_start() as needed.
2592 *
2593 * @param h h264context
2594 * @param h0 h264 master context (differs from 'h' when doing sliced based
2595 * parallel decoding)
2596 *
2597 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
2598 */
2599 static int decode_slice_header(H264Context *h, H264Context *h0)
2600 {
2601 MpegEncContext *const s = &h->s;
2602 MpegEncContext *const s0 = &h0->s;
2603 unsigned int first_mb_in_slice;
2604 unsigned int pps_id;
2605 int num_ref_idx_active_override_flag, max_refs, ret;
2606 unsigned int slice_type, tmp, i, j;
2607 int default_ref_list_done = 0;
2608 int last_pic_structure, last_pic_droppable;
2609 int needs_reinit = 0;
2610
2611 s->me.qpel_put = h->h264qpel.put_h264_qpel_pixels_tab;
2612 s->me.qpel_avg = h->h264qpel.avg_h264_qpel_pixels_tab;
2613
2614 first_mb_in_slice = get_ue_golomb(&s->gb);
2615
2616 if (first_mb_in_slice == 0) { // FIXME better field boundary detection
2617 if (h0->current_slice && FIELD_PICTURE) {
2618 field_end(h, 1);
2619 }
2620
2621 h0->current_slice = 0;
2622 if (!s0->first_field) {
2623 if (s->current_picture_ptr && !s->droppable &&
2624 s->current_picture_ptr->owner2 == s) {
2625 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
2626 s->picture_structure == PICT_BOTTOM_FIELD);
2627 }
2628 s->current_picture_ptr = NULL;
2629 }
2630 }
2631
2632 slice_type = get_ue_golomb_31(&s->gb);
2633 if (slice_type > 9) {
2634 av_log(h->s.avctx, AV_LOG_ERROR,
2635 "slice type too large (%d) at %d %d\n",
2636 h->slice_type, s->mb_x, s->mb_y);
2637 return -1;
2638 }
2639 if (slice_type > 4) {
2640 slice_type -= 5;
2641 h->slice_type_fixed = 1;
2642 } else
2643 h->slice_type_fixed = 0;
2644
2645 slice_type = golomb_to_pict_type[slice_type];
2646 if (slice_type == AV_PICTURE_TYPE_I ||
2647 (h0->current_slice != 0 && slice_type == h0->last_slice_type)) {
2648 default_ref_list_done = 1;
2649 }
2650 h->slice_type = slice_type;
2651 h->slice_type_nos = slice_type & 3;
2652
2653 // to make a few old functions happy, it's wrong though
2654 s->pict_type = h->slice_type;
2655
2656 pps_id = get_ue_golomb(&s->gb);
2657 if (pps_id >= MAX_PPS_COUNT) {
2658 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
2659 return -1;
2660 }
2661 if (!h0->pps_buffers[pps_id]) {
2662 av_log(h->s.avctx, AV_LOG_ERROR,
2663 "non-existing PPS %u referenced\n",
2664 pps_id);
2665 return -1;
2666 }
2667 h->pps = *h0->pps_buffers[pps_id];
2668
2669 if (!h0->sps_buffers[h->pps.sps_id]) {
2670 av_log(h->s.avctx, AV_LOG_ERROR,
2671 "non-existing SPS %u referenced\n",
2672 h->pps.sps_id);
2673 return -1;
2674 }
2675
2676 if (h->pps.sps_id != h->current_sps_id ||
2677 h->context_reinitialized ||
2678 h0->sps_buffers[h->pps.sps_id]->new) {
2679 SPS *new_sps = h0->sps_buffers[h->pps.sps_id];
2680
2681 h0->sps_buffers[h->pps.sps_id]->new = 0;
2682
2683 if (h->sps.chroma_format_idc != new_sps->chroma_format_idc ||
2684 h->sps.bit_depth_luma != new_sps->bit_depth_luma)
2685 needs_reinit = 1;
2686
2687 h->current_sps_id = h->pps.sps_id;
2688 h->sps = *h0->sps_buffers[h->pps.sps_id];
2689
2690 if ((ret = h264_set_parameter_from_sps(h)) < 0)
2691 return ret;
2692 }
2693
2694 s->avctx->profile = ff_h264_get_profile(&h->sps);
2695 s->avctx->level = h->sps.level_idc;
2696 s->avctx->refs = h->sps.ref_frame_count;
2697
2698 if (s->mb_width != h->sps.mb_width ||
2699 s->mb_height != h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag))
2700 needs_reinit = 1;
2701
2702 s->mb_width = h->sps.mb_width;
2703 s->mb_height = h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
2704
2705 h->b_stride = s->mb_width * 4;
2706
2707 s->chroma_y_shift = h->sps.chroma_format_idc <= 1; // 400 uses yuv420p
2708
2709 s->width = 16 * s->mb_width - (2 >> CHROMA444) * FFMIN(h->sps.crop_right, (8 << CHROMA444) - 1);
2710 if (h->sps.frame_mbs_only_flag)
2711 s->height = 16 * s->mb_height - (1 << s->chroma_y_shift) * FFMIN(h->sps.crop_bottom, (16 >> s->chroma_y_shift) - 1);
2712 else
2713 s->height = 16 * s->mb_height - (2 << s->chroma_y_shift) * FFMIN(h->sps.crop_bottom, (16 >> s->chroma_y_shift) - 1);
2714
2715 if (FFALIGN(s->avctx->width, 16) == s->width &&
2716 FFALIGN(s->avctx->height, 16) == s->height) {
2717 s->width = s->avctx->width;
2718 s->height = s->avctx->height;
2719 }
2720
2721 if (h->sps.video_signal_type_present_flag) {
2722 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG
2723 : AVCOL_RANGE_MPEG;
2724 if (h->sps.colour_description_present_flag) {
2725 if (s->avctx->colorspace != h->sps.colorspace)
2726 needs_reinit = 1;
2727 s->avctx->color_primaries = h->sps.color_primaries;
2728 s->avctx->color_trc = h->sps.color_trc;
2729 s->avctx->colorspace = h->sps.colorspace;
2730 }
2731 }
2732
2733 if (s->context_initialized &&
2734 (s->width != s->avctx->width ||
2735 s->height != s->avctx->height ||
2736 needs_reinit ||
2737 av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
2738
2739 if (h != h0) {
2740 av_log(s->avctx, AV_LOG_ERROR, "changing width/height on "
2741 "slice %d\n", h0->current_slice + 1);
2742 return AVERROR_INVALIDDATA;
2743 }
2744
2745 flush_change(h);
2746
2747 if ((ret = get_pixel_format(h)) < 0)
2748 return ret;
2749 s->avctx->pix_fmt = ret;
2750
2751 av_log(h->s.avctx, AV_LOG_INFO, "Reinit context to %dx%d, "
2752 "pix_fmt: %d\n", s->width, s->height, s->avctx->pix_fmt);
2753
2754 if ((ret = h264_slice_header_init(h, 1)) < 0) {
2755 av_log(h->s.avctx, AV_LOG_ERROR,
2756 "h264_slice_header_init() failed\n");
2757 return ret;
2758 }
2759 h->context_reinitialized = 1;
2760 }
2761 if (!s->context_initialized) {
2762 if (h != h0) {
2763 av_log(h->s.avctx, AV_LOG_ERROR,
2764 "Cannot (re-)initialize context during parallel decoding.\n");
2765 return -1;
2766 }
2767
2768 if ((ret = get_pixel_format(h)) < 0)
2769 return ret;
2770 s->avctx->pix_fmt = ret;
2771
2772 if ((ret = h264_slice_header_init(h, 0)) < 0) {
2773 av_log(h->s.avctx, AV_LOG_ERROR,
2774 "h264_slice_header_init() failed\n");
2775 return ret;
2776 }
2777 }
2778
2779 if (h == h0 && h->dequant_coeff_pps != pps_id) {
2780 h->dequant_coeff_pps = pps_id;
2781 init_dequant_tables(h);
2782 }
2783
2784 h->frame_num = get_bits(&s->gb, h->sps.log2_max_frame_num);
2785
2786 h->mb_mbaff = 0;
2787 h->mb_aff_frame = 0;
2788 last_pic_structure = s0->picture_structure;
2789 last_pic_droppable = s0->droppable;
2790 s->droppable = h->nal_ref_idc == 0;
2791 if (h->sps.frame_mbs_only_flag) {
2792 s->picture_structure = PICT_FRAME;
2793 } else {
2794 if (get_bits1(&s->gb)) { // field_pic_flag
2795 s->picture_structure = PICT_TOP_FIELD + get_bits1(&s->gb); // bottom_field_flag
2796 } else {
2797 s->picture_structure = PICT_FRAME;
2798 h->mb_aff_frame = h->sps.mb_aff;
2799 }
2800 }
2801 h->mb_field_decoding_flag = s->picture_structure != PICT_FRAME;
2802
2803 if (h0->current_slice != 0) {
2804 if (last_pic_structure != s->picture_structure ||
2805 last_pic_droppable != s->droppable) {
2806 av_log(h->s.avctx, AV_LOG_ERROR,
2807 "Changing field mode (%d -> %d) between slices is not allowed\n",
2808 last_pic_structure, s->picture_structure);
2809 s->picture_structure = last_pic_structure;
2810 s->droppable = last_pic_droppable;
2811 return AVERROR_INVALIDDATA;
2812 } else if (!s0->current_picture_ptr) {
2813 av_log(s->avctx, AV_LOG_ERROR,
2814 "unset current_picture_ptr on %d. slice\n",
2815 h0->current_slice + 1);
2816 return AVERROR_INVALIDDATA;
2817 }
2818 } else {
2819 /* Shorten frame num gaps so we don't have to allocate reference
2820 * frames just to throw them away */
2821 if (h->frame_num != h->prev_frame_num) {
2822 int unwrap_prev_frame_num = h->prev_frame_num;
2823 int max_frame_num = 1 << h->sps.log2_max_frame_num;
2824
2825 if (unwrap_prev_frame_num > h->frame_num)
2826 unwrap_prev_frame_num -= max_frame_num;
2827
2828 if ((h->frame_num - unwrap_prev_frame_num) > h->sps.ref_frame_count) {
2829 unwrap_prev_frame_num = (h->frame_num - h->sps.ref_frame_count) - 1;
2830 if (unwrap_prev_frame_num < 0)
2831 unwrap_prev_frame_num += max_frame_num;
2832
2833 h->prev_frame_num = unwrap_prev_frame_num;
2834 }
2835 }
2836
2837 /* See if we have a decoded first field looking for a pair...
2838 * Here, we're using that to see if we should mark previously
2839 * decode frames as "finished".
2840 * We have to do that before the "dummy" in-between frame allocation,
2841 * since that can modify s->current_picture_ptr. */
2842 if (s0->first_field) {
2843 assert(s0->current_picture_ptr);
2844 assert(s0->current_picture_ptr->f.data[0]);
2845 assert(s0->current_picture_ptr->f.reference != DELAYED_PIC_REF);
2846
2847 /* Mark old field/frame as completed */
2848 if (!last_pic_droppable && s0->current_picture_ptr->owner2 == s0) {
2849 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2850 last_pic_structure == PICT_BOTTOM_FIELD);
2851 }
2852
2853 /* figure out if we have a complementary field pair */
2854 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2855 /* Previous field is unmatched. Don't display it, but let it
2856 * remain for reference if marked as such. */
2857 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
2858 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2859 last_pic_structure == PICT_TOP_FIELD);
2860 }
2861 } else {
2862 if (s0->current_picture_ptr->frame_num != h->frame_num) {
2863 /* This and previous field were reference, but had
2864 * different frame_nums. Consider this field first in
2865 * pair. Throw away previous field except for reference
2866 * purposes. */
2867 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
2868 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2869 last_pic_structure == PICT_TOP_FIELD);
2870 }
2871 } else {
2872 /* Second field in complementary pair */
2873 if (!((last_pic_structure == PICT_TOP_FIELD &&
2874 s->picture_structure == PICT_BOTTOM_FIELD) ||
2875 (last_pic_structure == PICT_BOTTOM_FIELD &&
2876 s->picture_structure == PICT_TOP_FIELD))) {
2877 av_log(s->avctx, AV_LOG_ERROR,
2878 "Invalid field mode combination %d/%d\n",
2879 last_pic_structure, s->picture_structure);
2880 s->picture_structure = last_pic_structure;
2881 s->droppable = last_pic_droppable;
2882 return AVERROR_INVALIDDATA;
2883 } else if (last_pic_droppable != s->droppable) {
2884 av_log(s->avctx, AV_LOG_ERROR,
2885 "Cannot combine reference and non-reference fields in the same frame\n");
2886 av_log_ask_for_sample(s->avctx, NULL);
2887 s->picture_structure = last_pic_structure;
2888 s->droppable = last_pic_droppable;
2889 return AVERROR_PATCHWELCOME;
2890 }
2891
2892 /* Take ownership of this buffer. Note that if another thread owned
2893 * the first field of this buffer, we're not operating on that pointer,
2894 * so the original thread is still responsible for reporting progress
2895 * on that first field (or if that was us, we just did that above).
2896 * By taking ownership, we assign responsibility to ourselves to
2897 * report progress on the second field. */
2898 s0->current_picture_ptr->owner2 = s0;
2899 }
2900 }
2901 }
2902
2903 while (h->frame_num != h->prev_frame_num &&
2904 h->frame_num != (h->prev_frame_num + 1) % (1 << h->sps.log2_max_frame_num)) {
2905 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
2906 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
2907 h->frame_num, h->prev_frame_num);
2908 if (ff_h264_frame_start(h) < 0)
2909 return -1;
2910 h->prev_frame_num++;
2911 h->prev_frame_num %= 1 << h->sps.log2_max_frame_num;
2912 s->current_picture_ptr->frame_num = h->prev_frame_num;
2913 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX, 0);
2914 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX, 1);
2915 if ((ret = ff_generate_sliding_window_mmcos(h, 1)) < 0 &&
2916 s->avctx->err_recognition & AV_EF_EXPLODE)
2917 return ret;
2918 if (ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index) < 0 &&
2919 (s->avctx->err_recognition & AV_EF_EXPLODE))
2920 return AVERROR_INVALIDDATA;
2921 /* Error concealment: if a ref is missing, copy the previous ref in its place.
2922 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
2923 * about there being no actual duplicates.
2924 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
2925 * concealing a lost frame, this probably isn't noticeable by comparison, but it should
2926 * be fixed. */
2927 if (h->short_ref_count) {
2928 if (prev) {
2929 av_image_copy(h->short_ref[0]->f.data, h->short_ref[0]->f.linesize,
2930 (const uint8_t **)prev->f.data, prev->f.linesize,
2931 s->avctx->pix_fmt, s->mb_width * 16, s->mb_height * 16);
2932 h->short_ref[0]->poc = prev->poc + 2;
2933 }
2934 h->short_ref[0]->frame_num = h->prev_frame_num;
2935 }
2936 }
2937
2938 /* See if we have a decoded first field looking for a pair...
2939 * We're using that to see whether to continue decoding in that
2940 * frame, or to allocate a new one. */
2941 if (s0->first_field) {
2942 assert(s0->current_picture_ptr);
2943 assert(s0->current_picture_ptr->f.data[0]);
2944 assert(s0->current_picture_ptr->f.reference != DELAYED_PIC_REF);
2945
2946 /* figure out if we have a complementary field pair */
2947 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2948 /* Previous field is unmatched. Don't display it, but let it
2949 * remain for reference if marked as such. */
2950 s0->current_picture_ptr = NULL;
2951 s0->first_field = FIELD_PICTURE;
2952 } else {
2953 if (s0->current_picture_ptr->frame_num != h->frame_num) {
2954 /* This and the previous field had different frame_nums.
2955 * Consider this field first in pair. Throw away previous
2956 * one except for reference purposes. */
2957 s0->first_field = 1;
2958 s0->current_picture_ptr = NULL;
2959 } else {
2960 /* Second field in complementary pair */
2961 s0->first_field = 0;
2962 }
2963 }
2964 } else {
2965 /* Frame or first field in a potentially complementary pair */
2966 s0->first_field = FIELD_PICTURE;
2967 }
2968
2969 if (!FIELD_PICTURE || s0->first_field) {
2970 if (ff_h264_frame_start(h) < 0) {
2971 s0->first_field = 0;
2972 return -1;
2973 }
2974 } else {
2975 ff_release_unused_pictures(s, 0);
2976 }
2977 }
2978 if (h != h0 && (ret = clone_slice(h, h0)) < 0)
2979 return ret;
2980
2981 s->current_picture_ptr->frame_num = h->frame_num; // FIXME frame_num cleanup
2982
2983 assert(s->mb_num == s->mb_width * s->mb_height);
2984 if (first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
2985 first_mb_in_slice >= s->mb_num) {
2986 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
2987 return -1;
2988 }
2989 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
2990 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
2991 if (s->picture_structure == PICT_BOTTOM_FIELD)
2992 s->resync_mb_y = s->mb_y = s->mb_y + 1;
2993 assert(s->mb_y < s->mb_height);
2994
2995 if (s->picture_structure == PICT_FRAME) {
2996 h->curr_pic_num = h->frame_num;
2997 h->max_pic_num = 1 << h->sps.log2_max_frame_num;
2998 } else {
2999 h->curr_pic_num = 2 * h->frame_num + 1;
3000 h->max_pic_num = 1 << (h->sps.log2_max_frame_num + 1);
3001 }
3002
3003 if (h->nal_unit_type == NAL_IDR_SLICE)
3004 get_ue_golomb(&s->gb); /* idr_pic_id */
3005
3006 if (h->sps.poc_type == 0) {
3007 h->poc_lsb = get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3008
3009 if (h->pps.pic_order_present == 1 && s->picture_structure == PICT_FRAME)
3010 h->delta_poc_bottom = get_se_golomb(&s->gb);
3011 }
3012
3013 if (h->sps.poc_type == 1 && !h->sps.delta_pic_order_always_zero_flag) {
3014 h->delta_poc[0] = get_se_golomb(&s->gb);
3015
3016 if (h->pps.pic_order_present == 1 && s->picture_structure == PICT_FRAME)
3017 h->delta_poc[1] = get_se_golomb(&s->gb);
3018 }
3019
3020 init_poc(h);
3021
3022 if (h->pps.redundant_pic_cnt_present)
3023 h->redundant_pic_count = get_ue_golomb(&s->gb);
3024
3025 // set defaults, might be overridden a few lines later
3026 h->ref_count[0] = h->pps.ref_count[0];
3027 h->ref_count[1] = h->pps.ref_count[1];
3028
3029 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3030 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3031 h->direct_spatial_mv_pred = get_bits1(&s->gb);
3032 num_ref_idx_active_override_flag = get_bits1(&s->gb);
3033
3034 if (num_ref_idx_active_override_flag) {
3035 h->ref_count[0] = get_ue_golomb(&s->gb) + 1;
3036 if (h->ref_count[0] < 1)
3037 return AVERROR_INVALIDDATA;
3038 if (h->slice_type_nos == AV_PICTURE_TYPE_B) {
3039 h->ref_count[1] = get_ue_golomb(&s->gb) + 1;
3040 if (h->ref_count[1] < 1)
3041 return AVERROR_INVALIDDATA;
3042 }
3043 }
3044
3045 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3046 h->list_count = 2;
3047 else
3048 h->list_count = 1;
3049 } else
3050 h->list_count = 0;
3051
3052 max_refs = s->picture_structure == PICT_FRAME ? 16 : 32;
3053
3054 if (h->ref_count[0] > max_refs || h->ref_count[1] > max_refs) {
3055 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3056 h->ref_count[0] = h->ref_count[1] = 1;
3057 return AVERROR_INVALIDDATA;
3058 }
3059
3060 if (!default_ref_list_done)
3061 ff_h264_fill_default_ref_list(h);
3062
3063 if (h->slice_type_nos != AV_PICTURE_TYPE_I &&
3064 ff_h264_decode_ref_pic_list_reordering(h) < 0) {
3065 h->ref_count[1] = h->ref_count[0] = 0;
3066 return -1;
3067 }
3068
3069 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3070 s->last_picture_ptr = &h->ref_list[0][0];
3071 s->last_picture_ptr->owner2 = s;
3072 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
3073 }
3074 if (h->slice_type_nos == AV_PICTURE_TYPE_B) {
3075 s->next_picture_ptr = &h->ref_list[1][0];
3076 s->next_picture_ptr->owner2 = s;
3077 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
3078 }
3079
3080 if ((h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P) ||
3081 (h->pps.weighted_bipred_idc == 1 &&
3082 h->slice_type_nos == AV_PICTURE_TYPE_B))
3083 pred_weight_table(h);
3084 else if (h->pps.weighted_bipred_idc == 2 &&
3085 h->slice_type_nos == AV_PICTURE_TYPE_B) {
3086 implicit_weight_table(h, -1);
3087 } else {
3088 h->use_weight = 0;
3089 for (i = 0; i < 2; i++) {
3090 h->luma_weight_flag[i] = 0;
3091 h->chroma_weight_flag[i] = 0;
3092 }
3093 }
3094
3095 // If frame-mt is enabled, only update mmco tables for the first slice
3096 // in a field. Subsequent slices can temporarily clobber h->mmco_index
3097 // or h->mmco, which will cause ref list mix-ups and decoding errors
3098 // further down the line. This may break decoding if the first slice is
3099 // corrupt, thus we only do this if frame-mt is enabled.
3100 if (h->nal_ref_idc &&
3101 ff_h264_decode_ref_pic_marking(h0, &s->gb,
3102 !(s->avctx->active_thread_type & FF_THREAD_FRAME) ||
3103 h0->current_slice == 0) < 0 &&
3104 (s->avctx->err_recognition & AV_EF_EXPLODE))
3105 return AVERROR_INVALIDDATA;
3106
3107 if (FRAME_MBAFF) {
3108 ff_h264_fill_mbaff_ref_list(h);
3109
3110 if (h->pps.weighted_bipred_idc == 2 && h->slice_type_nos == AV_PICTURE_TYPE_B) {
3111 implicit_weight_table(h, 0);
3112 implicit_weight_table(h, 1);
3113 }
3114 }
3115
3116 if (h->slice_type_nos == AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred)
3117 ff_h264_direct_dist_scale_factor(h);
3118 ff_h264_direct_ref_list_init(h);
3119
3120 if (h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac) {
3121 tmp = get_ue_golomb_31(&s->gb);
3122 if (tmp > 2) {
3123 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3124 return -1;
3125 }
3126 h->cabac_init_idc = tmp;
3127 }
3128
3129 h->last_qscale_diff = 0;
3130 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
3131 if (tmp > 51 + 6 * (h->sps.bit_depth_luma - 8)) {
3132 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3133 return -1;
3134 }
3135 s->qscale = tmp;
3136 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3137 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3138 // FIXME qscale / qp ... stuff
3139 if (h->slice_type == AV_PICTURE_TYPE_SP)
3140 get_bits1(&s->gb); /* sp_for_switch_flag */
3141 if (h->slice_type == AV_PICTURE_TYPE_SP ||
3142 h->slice_type == AV_PICTURE_TYPE_SI)
3143 get_se_golomb(&s->gb); /* slice_qs_delta */
3144
3145 h->deblocking_filter = 1;
3146 h->slice_alpha_c0_offset = 52;
3147 h->slice_beta_offset = 52;
3148 if (h->pps.deblocking_filter_parameters_present) {
3149 tmp = get_ue_golomb_31(&s->gb);
3150 if (tmp > 2) {
3151 av_log(s->avctx, AV_LOG_ERROR,
3152 "deblocking_filter_idc %u out of range\n", tmp);
3153 return -1;
3154 }
3155 h->deblocking_filter = tmp;
3156 if (h->deblocking_filter < 2)
3157 h->deblocking_filter ^= 1; // 1<->0
3158
3159 if (h->deblocking_filter) {
3160 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
3161 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
3162 if (h->slice_alpha_c0_offset > 104U ||
3163 h->slice_beta_offset > 104U) {
3164 av_log(s->avctx, AV_LOG_ERROR,
3165 "deblocking filter parameters %d %d out of range\n",
3166 h->slice_alpha_c0_offset, h->slice_beta_offset);
3167 return -1;
3168 }
3169 }
3170 }
3171
3172 if (s->avctx->skip_loop_filter >= AVDISCARD_ALL ||
3173 (s->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
3174 h->slice_type_nos != AV_PICTURE_TYPE_I) ||
3175 (s->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
3176 h->slice_type_nos == AV_PICTURE_TYPE_B) ||
3177 (s->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
3178 h->nal_ref_idc == 0))
3179 h->deblocking_filter = 0;
3180
3181 if (h->deblocking_filter == 1 && h0->max_contexts > 1) {
3182 if (s->avctx->flags2 & CODEC_FLAG2_FAST) {
3183 /* Cheat slightly for speed:
3184 * Do not bother to deblock across slices. */
3185 h->deblocking_filter = 2;
3186 } else {
3187 h0->max_contexts = 1;
3188 if (!h0->single_decode_warning) {
3189 av_log(s->avctx, AV_LOG_INFO,
3190 "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
3191 h0->single_decode_warning = 1;
3192 }
3193 if (h != h0) {
3194 av_log(h->s.avctx, AV_LOG_ERROR,
3195 "Deblocking switched inside frame.\n");
3196 return 1;
3197 }
3198 }
3199 }
3200 h->qp_thresh = 15 + 52 -
3201 FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) -
3202 FFMAX3(0,
3203 h->pps.chroma_qp_index_offset[0],
3204 h->pps.chroma_qp_index_offset[1]) +
3205 6 * (h->sps.bit_depth_luma - 8);
3206
3207 h0->last_slice_type = slice_type;
3208 h->slice_num = ++h0->current_slice;
3209 if (h->slice_num >= MAX_SLICES) {
3210 av_log(s->avctx, AV_LOG_ERROR,
3211 "Too many slices, increase MAX_SLICES and recompile\n");
3212 }
3213
3214 for (j = 0; j < 2; j++) {
3215 int id_list[16];
3216 int *ref2frm = h->ref2frm[h->slice_num & (MAX_SLICES - 1)][j];
3217 for (i = 0; i < 16; i++) {
3218 id_list[i] = 60;
3219 if (h->ref_list[j][i].f.data[0]) {
3220 int k;
3221 uint8_t *base = h->ref_list[j][i].f.base[0];
3222 for (k = 0; k < h->short_ref_count; k++)
3223 if (h->short_ref[k]->f.base[0] == base) {
3224 id_list[i] = k;
3225 break;
3226 }
3227 for (k = 0; k < h->long_ref_count; k++)
3228 if (h->long_ref[k] && h->long_ref[k]->f.base[0] == base) {
3229 id_list[i] = h->short_ref_count + k;
3230 break;
3231 }
3232 }
3233 }
3234
3235 ref2frm[0] =
3236 ref2frm[1] = -1;
3237 for (i = 0; i < 16; i++)
3238 ref2frm[i + 2] = 4 * id_list[i] +
3239 (h->ref_list[j][i].f.reference & 3);
3240 ref2frm[18 + 0] =
3241 ref2frm[18 + 1] = -1;
3242 for (i = 16; i < 48; i++)
3243 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
3244 (h->ref_list[j][i].f.reference & 3);
3245 }
3246
3247 // FIXME: fix draw_edges + PAFF + frame threads
3248 h->emu_edge_width = (s->flags & CODEC_FLAG_EMU_EDGE ||
3249 (!h->sps.frame_mbs_only_flag &&
3250 s->avctx->active_thread_type))
3251 ? 0 : 16;
3252 h->emu_edge_height = (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
3253
3254 if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
3255 av_log(h->s.avctx, AV_LOG_DEBUG,
3256 "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",
3257 h->slice_num,
3258 (s->picture_structure == PICT_FRAME ? "F" : s->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
3259 first_mb_in_slice,
3260 av_get_picture_type_char(h->slice_type),
3261 h->slice_type_fixed ? " fix" : "",
3262 h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
3263 pps_id, h->frame_num,
3264 s->current_picture_ptr->field_poc[0],
3265 s->current_picture_ptr->field_poc[1],
3266 h->ref_count[0], h->ref_count[1],
3267 s->qscale,
3268 h->deblocking_filter,
3269 h->slice_alpha_c0_offset / 2 - 26, h->slice_beta_offset / 2 - 26,
3270 h->use_weight,
3271 h->use_weight == 1 && h->use_weight_chroma ? "c" : "",
3272 h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
3273 }
3274
3275 return 0;
3276 }
3277
3278 int ff_h264_get_slice_type(const H264Context *h)
3279 {
3280 switch (h->slice_type) {
3281 case AV_PICTURE_TYPE_P:
3282 return 0;
3283 case AV_PICTURE_TYPE_B:
3284 return 1;
3285 case AV_PICTURE_TYPE_I:
3286 return 2;
3287 case AV_PICTURE_TYPE_SP:
3288 return 3;
3289 case AV_PICTURE_TYPE_SI:
3290 return 4;
3291 default:
3292 return -1;
3293 }
3294 }
3295
3296 static av_always_inline void fill_filter_caches_inter(H264Context *h,
3297 MpegEncContext *const s,
3298 int mb_type, int top_xy,
3299 int left_xy[LEFT_MBS],
3300 int top_type,
3301 int left_type[LEFT_MBS],
3302 int mb_xy, int list)
3303 {
3304 int b_stride = h->b_stride;
3305 int16_t(*mv_dst)[2] = &h->mv_cache[list][scan8[0]];
3306 int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
3307 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
3308 if (USES_LIST(top_type, list)) {
3309 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
3310 const int b8_xy = 4 * top_xy + 2;
3311 int (*ref2frm)[64] = h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2);
3312 AV_COPY128(mv_dst - 1 * 8, s->current_picture.f.motion_val[list][b_xy + 0]);
3313 ref_cache[0 - 1 * 8] =
3314 ref_cache[1 - 1 * 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 0]];
3315 ref_cache[2 - 1 * 8] =
3316 ref_cache[3 - 1 * 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 1]];
3317 } else {
3318 AV_ZERO128(mv_dst - 1 * 8);
3319 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3320 }
3321
3322 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
3323 if (USES_LIST(left_type[LTOP], list)) {
3324 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
3325 const int b8_xy = 4 * left_xy[LTOP] + 1;
3326 int (*ref2frm)[64] = h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2);
3327 AV_COPY32(mv_dst - 1 + 0, s->current_picture.f.motion_val[list][b_xy + b_stride * 0]);
3328 AV_COPY32(mv_dst - 1 + 8, s->current_picture.f.motion_val[list][b_xy + b_stride * 1]);
3329 AV_COPY32(mv_dst - 1 + 16, s->current_picture.f.motion_val[list][b_xy + b_stride * 2]);
3330 AV_COPY32(mv_dst - 1 + 24, s->current_picture.f.motion_val[list][b_xy + b_stride * 3]);
3331 ref_cache[-1 + 0] =
3332 ref_cache[-1 + 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 2 * 0]];
3333 ref_cache[-1 + 16] =
3334 ref_cache[-1 + 24] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 2 * 1]];
3335 } else {
3336 AV_ZERO32(mv_dst - 1 + 0);
3337 AV_ZERO32(mv_dst - 1 + 8);
3338 AV_ZERO32(mv_dst - 1 + 16);
3339 AV_ZERO32(mv_dst - 1 + 24);
3340 ref_cache[-1 + 0] =
3341 ref_cache[-1 + 8] =
3342 ref_cache[-1 + 16] =
3343 ref_cache[-1 + 24] = LIST_NOT_USED;
3344 }
3345 }
3346 }
3347
3348 if (!USES_LIST(mb_type, list)) {
3349 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
3350 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3351 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3352 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3353 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3354 return;
3355 }
3356
3357 {
3358 int8_t *ref = &s->current_picture.f.ref_index[list][4 * mb_xy];
3359 int (*ref2frm)[64] = h->ref2frm[h->slice_num & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2);
3360 uint32_t ref01 = (pack16to32(ref2frm[list][ref[0]], ref2frm[list][ref[1]]) & 0x00FF00FF) * 0x0101;
3361 uint32_t ref23 = (pack16to32(ref2frm[list][ref[2]], ref2frm[list][ref[3]]) & 0x00FF00FF) * 0x0101;
3362 AV_WN32A(&ref_cache[0 * 8], ref01);
3363 AV_WN32A(&ref_cache[1 * 8], ref01);
3364 AV_WN32A(&ref_cache[2 * 8], ref23);
3365 AV_WN32A(&ref_cache[3 * 8], ref23);
3366 }
3367
3368 {
3369 int16_t(*mv_src)[2] = &s->current_picture.f.motion_val[list][4 * s->mb_x + 4 * s->mb_y * b_stride];
3370 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
3371 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
3372 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
3373 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
3374 }
3375 }
3376
3377 /**
3378 *
3379 * @return non zero if the loop filter can be skipped
3380 */
3381 static int fill_filter_caches(H264Context *h, int mb_type)
3382 {
3383 MpegEncContext *const s = &h->s;
3384 const int mb_xy = h->mb_xy;
3385 int top_xy, left_xy[LEFT_MBS];
3386 int top_type, left_type[LEFT_MBS];
3387 uint8_t *nnz;
3388 uint8_t *nnz_cache;
3389
3390 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
3391
3392 /* Wow, what a mess, why didn't they simplify the interlacing & intra
3393 * stuff, I can't imagine that these complex rules are worth it. */
3394
3395 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
3396 if (FRAME_MBAFF) {
3397 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.f.mb_type[mb_xy - 1]);
3398 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
3399 if (s->mb_y & 1) {
3400 if (left_mb_field_flag != curr_mb_field_flag)
3401 left_xy[LTOP] -= s->mb_stride;
3402 } else {
3403 if (curr_mb_field_flag)
3404 top_xy += s->mb_stride &
3405 (((s->current_picture.f.mb_type[top_xy] >> 7) & 1) - 1);
3406 if (left_mb_field_flag != curr_mb_field_flag)
3407 left_xy[LBOT] += s->mb_stride;
3408 }
3409 }
3410
3411 h->top_mb_xy = top_xy;
3412 h->left_mb_xy[LTOP] = left_xy[LTOP];
3413 h->left_mb_xy[LBOT] = left_xy[LBOT];
3414 {
3415 /* For sufficiently low qp, filtering wouldn't do anything.
3416 * This is a conservative estimate: could also check beta_offset
3417 * and more accurate chroma_qp. */
3418 int qp_thresh = h->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
3419 int qp = s->current_picture.f.qscale_table[mb_xy];
3420 if (qp <= qp_thresh &&
3421 (left_xy[LTOP] < 0 ||
3422 ((qp + s->current_picture.f.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
3423 (top_xy < 0 ||
3424 ((qp + s->current_picture.f.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
3425 if (!FRAME_MBAFF)
3426 return 1;
3427 if ((left_xy[LTOP] < 0 ||
3428 ((qp + s->current_picture.f.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
3429 (top_xy < s->mb_stride ||
3430 ((qp + s->current_picture.f.qscale_table[top_xy - s->mb_stride] + 1) >> 1) <= qp_thresh))
3431 return 1;
3432 }
3433 }
3434
3435 top_type = s->current_picture.f.mb_type[top_xy];
3436 left_type[LTOP] = s->current_picture.f.mb_type[left_xy[LTOP]];
3437 left_type[LBOT] = s->current_picture.f.mb_type[left_xy[LBOT]];
3438 if (h->deblocking_filter == 2) {
3439 if (h->slice_table[top_xy] != h->slice_num)
3440 top_type = 0;
3441 if (h->slice_table[left_xy[LBOT]] != h->slice_num)
3442 left_type[LTOP] = left_type[LBOT] = 0;
3443 } else {
3444 if (h->slice_table[top_xy] == 0xFFFF)
3445 top_type = 0;
3446 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
3447 left_type[LTOP] = left_type[LBOT] = 0;
3448 }
3449 h->top_type = top_type;
3450 h->left_type[LTOP] = left_type[LTOP];
3451 h->left_type[LBOT] = left_type[LBOT];
3452
3453 if (IS_INTRA(mb_type))
3454 return 0;
3455
3456 fill_filter_caches_inter(h, s, mb_type, top_xy, left_xy,
3457 top_type, left_type, mb_xy, 0);
3458 if (h->list_count == 2)
3459 fill_filter_caches_inter(h, s, mb_type, top_xy, left_xy,
3460 top_type, left_type, mb_xy, 1);
3461
3462 nnz = h->non_zero_count[mb_xy];
3463 nnz_cache = h->non_zero_count_cache;
3464 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
3465 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
3466 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
3467 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
3468 h->cbp = h->cbp_table[mb_xy];
3469
3470 if (top_type) {
3471 nnz = h->non_zero_count[top_xy];
3472 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
3473 }
3474
3475 if (left_type[LTOP]) {
3476 nnz = h->non_zero_count[left_xy[LTOP]];
3477 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
3478 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
3479 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
3480 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
3481 }
3482
3483 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
3484 * from what the loop filter needs */
3485 if (!CABAC && h->pps.transform_8x8_mode) {
3486 if (IS_8x8DCT(top_type)) {
3487 nnz_cache[4 + 8 * 0] =
3488 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
3489 nnz_cache[6 + 8 * 0] =
3490 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
3491 }
3492 if (IS_8x8DCT(left_type[LTOP])) {
3493 nnz_cache[3 + 8 * 1] =
3494 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
3495 }
3496 if (IS_8x8DCT(left_type[LBOT])) {
3497 nnz_cache[3 + 8 * 3] =
3498 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
3499 }
3500
3501 if (IS_8x8DCT(mb_type)) {
3502 nnz_cache[scan8[0]] =
3503 nnz_cache[scan8[1]] =
3504 nnz_cache[scan8[2]] =
3505 nnz_cache[scan8[3]] = (h->cbp & 0x1000) >> 12;
3506
3507 nnz_cache[scan8[0 + 4]] =
3508 nnz_cache[scan8[1 + 4]] =
3509 nnz_cache[scan8[2 + 4]] =
3510 nnz_cache[scan8[3 + 4]] = (h->cbp & 0x2000) >> 12;
3511
3512 nnz_cache[scan8[0 + 8]] =
3513 nnz_cache[scan8[1 + 8]] =
3514 nnz_cache[scan8[2 + 8]] =
3515 nnz_cache[scan8[3 + 8]] = (h->cbp & 0x4000) >> 12;
3516
3517 nnz_cache[scan8[0 + 12]] =
3518 nnz_cache[scan8[1 + 12]] =
3519 nnz_cache[scan8[2 + 12]] =
3520 nnz_cache[scan8[3 + 12]] = (h->cbp & 0x8000) >> 12;
3521 }
3522 }
3523
3524 return 0;
3525 }
3526
3527 static void loop_filter(H264Context *h, int start_x, int end_x)
3528 {
3529 MpegEncContext *const s = &h->s;
3530 uint8_t *dest_y, *dest_cb, *dest_cr;
3531 int linesize, uvlinesize, mb_x, mb_y;
3532 const int end_mb_y = s->mb_y + FRAME_MBAFF;
3533 const int old_slice_type = h->slice_type;
3534 const int pixel_shift = h->pixel_shift;
3535 const int block_h = 16 >> s->chroma_y_shift;
3536
3537 if (h->deblocking_filter) {
3538 for (mb_x = start_x; mb_x < end_x; mb_x++)
3539 for (mb_y = end_mb_y - FRAME_MBAFF; mb_y <= end_mb_y; mb_y++) {
3540 int mb_xy, mb_type;
3541 mb_xy = h->mb_xy = mb_x + mb_y * s->mb_stride;
3542 h->slice_num = h->slice_table[mb_xy];
3543 mb_type = s->current_picture.f.mb_type[mb_xy];
3544 h->list_count = h->list_counts[mb_xy];
3545
3546 if (FRAME_MBAFF)
3547 h->mb_mbaff =
3548 h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
3549
3550 s->mb_x = mb_x;
3551 s->mb_y = mb_y;
3552 dest_y = s->current_picture.f.data[0] +
3553 ((mb_x << pixel_shift) + mb_y * s->linesize) * 16;
3554 dest_cb = s->current_picture.f.data[1] +
3555 (mb_x << pixel_shift) * (8 << CHROMA444) +
3556 mb_y * s->uvlinesize * block_h;
3557 dest_cr = s->current_picture.f.data[2] +
3558 (mb_x << pixel_shift) * (8 << CHROMA444) +
3559 mb_y * s->uvlinesize * block_h;
3560 // FIXME simplify above
3561
3562 if (MB_FIELD) {
3563 linesize = h->mb_linesize = s->linesize * 2;
3564 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
3565 if (mb_y & 1) { // FIXME move out of this function?
3566 dest_y -= s->linesize * 15;
3567 dest_cb -= s->uvlinesize * (block_h - 1);
3568 dest_cr -= s->uvlinesize * (block_h - 1);
3569 }
3570 } else {
3571 linesize = h->mb_linesize = s->linesize;
3572 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
3573 }
3574 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
3575 uvlinesize, 0);
3576 if (fill_filter_caches(h, mb_type))
3577 continue;
3578 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.f.qscale_table[mb_xy]);
3579 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.f.qscale_table[mb_xy]);
3580
3581 if (FRAME_MBAFF) {
3582 ff_h264_filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr,
3583 linesize, uvlinesize);
3584 } else {
3585 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb,
3586 dest_cr, linesize, uvlinesize);
3587 }
3588 }
3589 }
3590 h->slice_type = old_slice_type;
3591 s->mb_x = end_x;
3592 s->mb_y = end_mb_y - FRAME_MBAFF;
3593 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3594 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3595 }
3596
3597 static void predict_field_decoding_flag(H264Context *h)
3598 {
3599 MpegEncContext *const s = &h->s;
3600 const int mb_xy = s->mb_x + s->mb_y * s->mb_stride;
3601 int mb_type = (h->slice_table[mb_xy - 1] == h->slice_num) ?
3602 s->current_picture.f.mb_type[mb_xy - 1] :
3603 (h->slice_table[mb_xy - s->mb_stride] == h->slice_num) ?
3604 s->current_picture.f.mb_type[mb_xy - s->mb_stride] : 0;
3605 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
3606 }
3607
3608 /**
3609 * Draw edges and report progress for the last MB row.
3610 */
3611 static void decode_finish_row(H264Context *h)
3612 {
3613 MpegEncContext *const s = &h->s;
3614 int top = 16 * (s->mb_y >> FIELD_PICTURE);
3615 int pic_height = 16 * s->mb_height >> FIELD_PICTURE;
3616 int height = 16 << FRAME_MBAFF;
3617 int deblock_border = (16 + 4) << FRAME_MBAFF;
3618
3619 if (h->deblocking_filter) {
3620 if ((top + height) >= pic_height)
3621 height += deblock_border;
3622 top -= deblock_border;
3623 }
3624
3625 if (top >= pic_height || (top + height) < h->emu_edge_height)
3626 return;
3627
3628 height = FFMIN(height, pic_height - top);
3629 if (top < h->emu_edge_height) {
3630 height = top + height;
3631 top = 0;
3632 }
3633
3634 ff_draw_horiz_band(s, top, height);
3635
3636 if (s->droppable)
3637 return;
3638
3639 ff_thread_report_progress(&s->current_picture_ptr->f, top + height - 1,
3640 s->picture_structure == PICT_BOTTOM_FIELD);
3641 }
3642
3643 static int decode_slice(struct AVCodecContext *avctx, void *arg)
3644 {
3645 H264Context *h = *(void **)arg;
3646 MpegEncContext *const s = &h->s;
3647 const int part_mask = s->partitioned_frame ? (ER_AC_END | ER_AC_ERROR)
3648 : 0x7F;
3649 int lf_x_start = s->mb_x;
3650
3651 s->mb_skip_run = -1;
3652
3653 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME ||
3654 s->codec_id != AV_CODEC_ID_H264 ||
3655 (CONFIG_GRAY && (s->flags & CODEC_FLAG_GRAY));
3656
3657 if (h->pps.cabac) {
3658 /* realign */
3659 align_get_bits(&s->gb);
3660
3661 /* init cabac */
3662 ff_init_cabac_states(&h->cabac);
3663 ff_init_cabac_decoder(&h->cabac,
3664 s->gb.buffer + get_bits_count(&s->gb) / 8,
3665 (get_bits_left(&s->gb) + 7) / 8);
3666
3667 ff_h264_init_cabac_states(h);
3668
3669 for (;;) {
3670 // START_TIMER
3671 int ret = ff_h264_decode_mb_cabac(h);
3672 int eos;
3673 // STOP_TIMER("decode_mb_cabac")
3674
3675 if (ret >= 0)
3676 ff_h264_hl_decode_mb(h);
3677
3678 // FIXME optimal? or let mb_decode decode 16x32 ?
3679 if (ret >= 0 && FRAME_MBAFF) {
3680 s->mb_y++;
3681
3682 ret = ff_h264_decode_mb_cabac(h);
3683
3684 if (ret >= 0)
3685 ff_h264_hl_decode_mb(h);
3686 s->mb_y--;
3687 }
3688 eos = get_cabac_terminate(&h->cabac);
3689
3690 if ((s->workaround_bugs & FF_BUG_TRUNCATED) &&
3691 h->cabac.bytestream > h->cabac.bytestream_end + 2) {
3692 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x - 1,
3693 s->mb_y, ER_MB_END & part_mask);
3694 if (s->mb_x >= lf_x_start)
3695 loop_filter(h, lf_x_start, s->mb_x + 1);
3696 return 0;
3697 }
3698 if (ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
3699 av_log(h->s.avctx, AV_LOG_ERROR,
3700 "error while decoding MB %d %d, bytestream (%td)\n",
3701 s->mb_x, s->mb_y,
3702 h->cabac.bytestream_end - h->cabac.bytestream);
3703 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3704 s->mb_y, ER_MB_ERROR & part_mask);
3705 return -1;
3706 }
3707
3708 if (++s->mb_x >= s->mb_width) {
3709 loop_filter(h, lf_x_start, s->mb_x);
3710 s->mb_x = lf_x_start = 0;
3711 decode_finish_row(h);
3712 ++s->mb_y;
3713 if (FIELD_OR_MBAFF_PICTURE) {
3714 ++s->mb_y;
3715 if (FRAME_MBAFF && s->mb_y < s->mb_height)
3716 predict_field_decoding_flag(h);
3717 }
3718 }
3719
3720 if (eos || s->mb_y >= s->mb_height) {
3721 tprintf(s->avctx, "slice end %d %d\n",
3722 get_bits_count(&s->gb), s->gb.size_in_bits);
3723 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x - 1,
3724 s->mb_y, ER_MB_END & part_mask);
3725 if (s->mb_x > lf_x_start)
3726 loop_filter(h, lf_x_start, s->mb_x);
3727 return 0;
3728 }
3729 }
3730 } else {
3731 for (;;) {
3732 int ret = ff_h264_decode_mb_cavlc(h);
3733
3734 if (ret >= 0)
3735 ff_h264_hl_decode_mb(h);
3736
3737 // FIXME optimal? or let mb_decode decode 16x32 ?
3738 if (ret >= 0 && FRAME_MBAFF) {
3739 s->mb_y++;
3740 ret = ff_h264_decode_mb_cavlc(h);
3741
3742 if (ret >= 0)
3743 ff_h264_hl_decode_mb(h);
3744 s->mb_y--;
3745 }
3746
3747 if (ret < 0) {
3748 av_log(h->s.avctx, AV_LOG_ERROR,
3749 "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3750 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3751 s->mb_y, ER_MB_ERROR & part_mask);
3752 return -1;
3753 }
3754
3755 if (++s->mb_x >= s->mb_width) {
3756 loop_filter(h, lf_x_start, s->mb_x);
3757 s->mb_x = lf_x_start = 0;
3758 decode_finish_row(h);
3759 ++s->mb_y;
3760 if (FIELD_OR_MBAFF_PICTURE) {
3761 ++s->mb_y;
3762 if (FRAME_MBAFF && s->mb_y < s->mb_height)
3763 predict_field_decoding_flag(h);
3764 }
3765 if (s->mb_y >= s->mb_height) {
3766 tprintf(s->avctx, "slice end %d %d\n",
3767 get_bits_count(&s->gb), s->gb.size_in_bits);
3768
3769 if (get_bits_left(&s->gb) == 0) {
3770 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3771 s->mb_x - 1, s->mb_y,
3772 ER_MB_END & part_mask);
3773
3774 return 0;
3775 } else {
3776 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3777 s->mb_x - 1, s->mb_y,
3778 ER_MB_END & part_mask);
3779
3780 return -1;
3781 }
3782 }
3783 }
3784
3785 if (get_bits_left(&s->gb) <= 0 && s->mb_skip_run <= 0) {
3786 tprintf(s->avctx, "slice end %d %d\n",
3787 get_bits_count(&s->gb), s->gb.size_in_bits);
3788 if (get_bits_left(&s->gb) == 0) {
3789 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3790 s->mb_x - 1, s->mb_y,
3791 ER_MB_END & part_mask);
3792 if (s->mb_x > lf_x_start)
3793 loop_filter(h, lf_x_start, s->mb_x);
3794
3795 return 0;
3796 } else {
3797 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3798 s->mb_y, ER_MB_ERROR & part_mask);
3799
3800 return -1;
3801 }
3802 }
3803 }
3804 }
3805 }
3806
3807 /**
3808 * Call decode_slice() for each context.
3809 *
3810 * @param h h264 master context
3811 * @param context_count number of contexts to execute
3812 */
3813 static int execute_decode_slices(H264Context *h, int context_count)
3814 {
3815 MpegEncContext *const s = &h->s;
3816 AVCodecContext *const avctx = s->avctx;
3817 H264Context *hx;
3818 int i;
3819
3820 if (s->avctx->hwaccel ||
3821 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
3822 return 0;
3823 if (context_count == 1) {
3824 return decode_slice(avctx, &h);
3825 } else {
3826 for (i = 1; i < context_count; i++) {
3827 hx = h->thread_context[i];
3828 hx->s.err_recognition = avctx->err_recognition;
3829 hx->s.error_count = 0;
3830 }
3831
3832 avctx->execute(avctx, decode_slice, h->thread_context,
3833 NULL, context_count, sizeof(void *));
3834
3835 /* pull back stuff from slices to master context */
3836 hx = h->thread_context[context_count - 1];
3837 s->mb_x = hx->s.mb_x;
3838 s->mb_y = hx->s.mb_y;
3839 s->droppable = hx->s.droppable;
3840 s->picture_structure = hx->s.picture_structure;
3841 for (i = 1; i < context_count; i++)
3842 h->s.error_count += h->thread_context[i]->s.error_count;
3843 }
3844
3845 return 0;
3846 }
3847
3848 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
3849 int parse_extradata)
3850 {
3851 MpegEncContext *const s = &h->s;
3852 AVCodecContext *const avctx = s->avctx;
3853 H264Context *hx; ///< thread context
3854 int buf_index;
3855 int context_count;
3856 int next_avc;
3857 int pass = !(avctx->active_thread_type & FF_THREAD_FRAME);
3858 int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
3859 int nal_index;
3860
3861 h->max_contexts = s->slice_context_count;
3862 if (!(s->flags2 & CODEC_FLAG2_CHUNKS)) {
3863 h->current_slice = 0;
3864 if (!s->first_field)
3865 s->current_picture_ptr = NULL;
3866 ff_h264_reset_sei(h);
3867 }
3868
3869 for (; pass <= 1; pass++) {
3870 buf_index = 0;
3871 context_count = 0;
3872 next_avc = h->is_avc ? 0 : buf_size;
3873 nal_index = 0;
3874 for (;;) {
3875 int consumed;
3876 int dst_length;
3877 int bit_length;
3878 const uint8_t *ptr;
3879 int i, nalsize = 0;
3880 int err;
3881
3882 if (buf_index >= next_avc) {
3883 if (buf_index >= buf_size - h->nal_length_size)
3884 break;
3885 nalsize = 0;
3886 for (i = 0; i < h->nal_length_size; i++)
3887 nalsize = (nalsize << 8) | buf[buf_index++];
3888 if (nalsize <= 0 || nalsize > buf_size - buf_index) {
3889 av_log(h->s.avctx, AV_LOG_ERROR,
3890 "AVC: nal size %d\n", nalsize);
3891 break;
3892 }
3893 next_avc = buf_index + nalsize;
3894 } else {
3895 // start code prefix search
3896 for (; buf_index + 3 < next_avc; buf_index++)
3897 // This should always succeed in the first iteration.
3898 if (buf[buf_index] == 0 &&
3899 buf[buf_index + 1] == 0 &&
3900 buf[buf_index + 2] == 1)
3901 break;
3902
3903 if (buf_index + 3 >= buf_size) {
3904 buf_index = buf_size;
3905 break;
3906 }
3907
3908 buf_index += 3;
3909 if (buf_index >= next_avc)
3910 continue;
3911 }
3912
3913 hx = h->thread_context[context_count];
3914
3915 ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length,
3916 &consumed, next_avc - buf_index);
3917 if (ptr == NULL || dst_length < 0) {
3918 buf_index = -1;
3919 goto end;
3920 }
3921 i = buf_index + consumed;
3922 if ((s->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc &&
3923 buf[i] == 0x00 && buf[i + 1] == 0x00 &&
3924 buf[i + 2] == 0x01 && buf[i + 3] == 0xE0)
3925 s->workaround_bugs |= FF_BUG_TRUNCATED;
3926
3927 if (!(s->workaround_bugs & FF_BUG_TRUNCATED))
3928 while (ptr[dst_length - 1] == 0 && dst_length > 0)
3929 dst_length--;
3930 bit_length = !dst_length ? 0
3931 : (8 * dst_length -
3932 decode_rbsp_trailing(h, ptr + dst_length - 1));
3933
3934 if (s->avctx->debug & FF_DEBUG_STARTCODE)
3935 av_log(h->s.avctx, AV_LOG_DEBUG,
3936 "NAL %d at %d/%d length %d\n",
3937 hx->nal_unit_type, buf_index, buf_size, dst_length);
3938
3939 if (h->is_avc && (nalsize != consumed) && nalsize)
3940 av_log(h->s.avctx, AV_LOG_DEBUG,
3941 "AVC: Consumed only %d bytes instead of %d\n",
3942 consumed, nalsize);
3943
3944 buf_index += consumed;
3945 nal_index++;
3946
3947 if (pass == 0) {
3948 /* packets can sometimes contain multiple PPS/SPS,
3949 * e.g. two PAFF field pictures in one packet, or a demuxer
3950 * which splits NALs strangely if so, when frame threading we
3951 * can't start the next thread until we've read all of them */
3952 switch (hx->nal_unit_type) {
3953 case NAL_SPS:
3954 case NAL_PPS:
3955 nals_needed = nal_index;
3956 break;
3957 case NAL_DPA:
3958 case NAL_IDR_SLICE:
3959 case NAL_SLICE:
3960 init_get_bits(&hx->s.gb, ptr, bit_length);
3961 if (!get_ue_golomb(&hx->s.gb))
3962 nals_needed = nal_index;
3963 }
3964 continue;
3965 }
3966
3967 // FIXME do not discard SEI id
3968 if (avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0)
3969 continue;
3970
3971 again:
3972 /* Ignore every NAL unit type except PPS and SPS during extradata
3973 * parsing. Decoding slices is not possible in codec init
3974 * with frame-mt */
3975 if (parse_extradata && HAVE_THREADS &&
3976 (s->avctx->active_thread_type & FF_THREAD_FRAME) &&
3977 (hx->nal_unit_type != NAL_PPS &&
3978 hx->nal_unit_type != NAL_SPS)) {
3979 av_log(avctx, AV_LOG_INFO, "Ignoring NAL unit %d during "
3980 "extradata parsing\n", hx->nal_unit_type);
3981 hx->nal_unit_type = NAL_FF_IGNORE;
3982 }
3983 err = 0;
3984 switch (hx->nal_unit_type) {
3985 case NAL_IDR_SLICE:
3986 if (h->nal_unit_type != NAL_IDR_SLICE) {
3987 av_log(h->s.avctx, AV_LOG_ERROR,
3988 "Invalid mix of idr and non-idr slices\n");
3989 buf_index = -1;
3990 goto end;
3991 }
3992 idr(h); // FIXME ensure we don't lose some frames if there is reordering
3993 case NAL_SLICE:
3994 init_get_bits(&hx->s.gb, ptr, bit_length);
3995 hx->intra_gb_ptr =
3996 hx->inter_gb_ptr = &hx->s.gb;
3997 hx->s.data_partitioning = 0;
3998
3999 if ((err = decode_slice_header(hx, h)))
4000 break;
4001
4002 s->current_picture_ptr->f.key_frame |=
4003 (hx->nal_unit_type == NAL_IDR_SLICE) ||
4004 (h->sei_recovery_frame_cnt >= 0);
4005
4006 if (h->current_slice == 1) {
4007 if (!(s->flags2 & CODEC_FLAG2_CHUNKS))
4008 decode_postinit(h, nal_index >= nals_needed);
4009
4010 if (s->avctx->hwaccel &&
4011 s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
4012 return -1;
4013 if (CONFIG_H264_VDPAU_DECODER &&
4014 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
4015 ff_vdpau_h264_picture_start(s);
4016 }
4017
4018 if (hx->redundant_pic_count == 0 &&
4019 (avctx->skip_frame < AVDISCARD_NONREF ||
4020 hx->nal_ref_idc) &&
4021 (avctx->skip_frame < AVDISCARD_BIDIR ||
4022 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4023 (avctx->skip_frame < AVDISCARD_NONKEY ||
4024 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4025 avctx->skip_frame < AVDISCARD_ALL) {
4026 if (avctx->hwaccel) {
4027 if (avctx->hwaccel->decode_slice(avctx,
4028 &buf[buf_index - consumed],
4029 consumed) < 0)
4030 return -1;
4031 } else if (CONFIG_H264_VDPAU_DECODER &&
4032 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
4033 static const uint8_t start_code[] = {
4034 0x00, 0x00, 0x01 };
4035 ff_vdpau_add_data_chunk(s, start_code,
4036 sizeof(start_code));
4037 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed],
4038 consumed);
4039 } else
4040 context_count++;
4041 }
4042 break;
4043 case NAL_DPA:
4044 init_get_bits(&hx->s.gb, ptr, bit_length);
4045 hx->intra_gb_ptr =
4046 hx->inter_gb_ptr = NULL;
4047
4048 if ((err = decode_slice_header(hx, h)) < 0)
4049 break;
4050
4051 hx->s.data_partitioning = 1;
4052 break;
4053 case NAL_DPB:
4054 init_get_bits(&hx->intra_gb, ptr, bit_length);
4055 hx->intra_gb_ptr = &hx->intra_gb;
4056 break;
4057 case NAL_DPC:
4058 init_get_bits(&hx->inter_gb, ptr, bit_length);
4059 hx->inter_gb_ptr = &hx->inter_gb;
4060
4061 if (hx->redundant_pic_count == 0 &&
4062 hx->intra_gb_ptr &&
4063 hx->s.data_partitioning &&
4064 s->current_picture_ptr &&
4065 s->context_initialized &&
4066 (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) &&
4067 (avctx->skip_frame < AVDISCARD_BIDIR ||
4068 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4069 (avctx->skip_frame < AVDISCARD_NONKEY ||
4070 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4071 avctx->skip_frame < AVDISCARD_ALL)
4072 context_count++;
4073 break;
4074 case NAL_SEI:
4075 init_get_bits(&s->gb, ptr, bit_length);
4076 ff_h264_decode_sei(h);
4077 break;
4078 case NAL_SPS:
4079 init_get_bits(&s->gb, ptr, bit_length);
4080 if (ff_h264_decode_seq_parameter_set(h) < 0 &&
4081 h->is_avc && (nalsize != consumed) && nalsize) {
4082 av_log(h->s.avctx, AV_LOG_DEBUG,
4083 "SPS decoding failure, trying again with the complete NAL\n");
4084 init_get_bits(&s->gb, buf + buf_index + 1 - consumed,
4085 8 * (nalsize - 1));
4086 ff_h264_decode_seq_parameter_set(h);
4087 }
4088
4089 if (h264_set_parameter_from_sps(h) < 0) {
4090 buf_index = -1;
4091 goto end;
4092 }
4093 break;
4094 case NAL_PPS:
4095 init_get_bits(&s->gb, ptr, bit_length);
4096 ff_h264_decode_picture_parameter_set(h, bit_length);
4097 break;
4098 case NAL_AUD:
4099 case NAL_END_SEQUENCE:
4100 case NAL_END_STREAM:
4101 case NAL_FILLER_DATA:
4102 case NAL_SPS_EXT:
4103 case NAL_AUXILIARY_SLICE:
4104 break;
4105 case NAL_FF_IGNORE:
4106 break;
4107 default:
4108 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
4109 hx->nal_unit_type, bit_length);
4110 }
4111
4112 if (context_count == h->max_contexts) {
4113 execute_decode_slices(h, context_count);
4114 context_count = 0;
4115 }
4116
4117 if (err < 0)
4118 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
4119 else if (err == 1) {
4120 /* Slice could not be decoded in parallel mode, copy down
4121 * NAL unit stuff to context 0 and restart. Note that
4122 * rbsp_buffer is not transferred, but since we no longer
4123 * run in parallel mode this should not be an issue. */
4124 h->nal_unit_type = hx->nal_unit_type;
4125 h->nal_ref_idc = hx->nal_ref_idc;
4126 hx = h;
4127 goto again;
4128 }
4129 }
4130 }
4131 if (context_count)
4132 execute_decode_slices(h, context_count);
4133
4134 end:
4135 /* clean up */
4136 if (s->current_picture_ptr && s->current_picture_ptr->owner2 == s &&
4137 !s->droppable) {
4138 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
4139 s->picture_structure == PICT_BOTTOM_FIELD);
4140 }
4141
4142 return buf_index;
4143 }
4144
4145 /**
4146 * Return the number of bytes consumed for building the current frame.
4147 */
4148 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size)
4149 {
4150 if (pos == 0)
4151 pos = 1; // avoid infinite loops (i doubt that is needed but ...)
4152 if (pos + 10 > buf_size)
4153 pos = buf_size; // oops ;)
4154
4155 return pos;
4156 }
4157
4158 static int decode_frame(AVCodecContext *avctx, void *data,
4159 int *got_frame, AVPacket *avpkt)
4160 {
4161 const uint8_t *buf = avpkt->data;
4162 int buf_size = avpkt->size;
4163 H264Context *h = avctx->priv_data;
4164 MpegEncContext *s = &h->s;
4165 AVFrame *pict = data;
4166 int buf_index = 0;
4167
4168 s->flags = avctx->flags;
4169 s->flags2 = avctx->flags2;
4170
4171 /* end of stream, output what is still in the buffers */
4172 out:
4173 if (buf_size == 0) {
4174 Picture *out;
4175 int i, out_idx;
4176
4177 s->current_picture_ptr = NULL;
4178
4179 // FIXME factorize this with the output code below
4180 out = h->delayed_pic[0];
4181 out_idx = 0;
4182 for (i = 1;
4183 h->delayed_pic[i] &&
4184 !h->delayed_pic[i]->f.key_frame &&
4185 !h->delayed_pic[i]->mmco_reset;
4186 i++)
4187 if (h->delayed_pic[i]->poc < out->poc) {
4188 out = h->delayed_pic[i];
4189 out_idx = i;
4190 }
4191
4192 for (i = out_idx; h->delayed_pic[i]; i++)
4193 h->delayed_pic[i] = h->delayed_pic[i + 1];
4194
4195 if (out) {
4196 *got_frame = 1;
4197 *pict = out->f;
4198 }
4199
4200 return buf_index;
4201 }
4202
4203 buf_index = decode_nal_units(h, buf, buf_size, 0);
4204 if (buf_index < 0)
4205 return -1;
4206
4207 if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
4208 buf_size = 0;
4209 goto out;
4210 }
4211
4212 if (!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr) {
4213 if (avctx->skip_frame >= AVDISCARD_NONREF)
4214 return 0;
4215 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
4216 return -1;
4217 }
4218
4219 if (!(s->flags2 & CODEC_FLAG2_CHUNKS) ||
4220 (s->mb_y >= s->mb_height && s->mb_height)) {
4221 if (s->flags2 & CODEC_FLAG2_CHUNKS)
4222 decode_postinit(h, 1);
4223
4224 field_end(h, 0);
4225 h->context_reinitialized = 0;
4226
4227 if (!h->next_output_pic) {
4228 /* Wait for second field. */
4229 *got_frame = 0;
4230 } else {
4231 *got_frame = 1;
4232 *pict = h->next_output_pic->f;
4233 }
4234 }
4235
4236 assert(pict->data[0] || !*got_frame);
4237 ff_print_debug_info(s, pict);
4238
4239 return get_consumed_bytes(s, buf_index, buf_size);
4240 }
4241
4242 av_cold void ff_h264_free_context(H264Context *h)
4243 {
4244 int i;
4245
4246 free_tables(h, 1); // FIXME cleanup init stuff perhaps
4247
4248 for (i = 0; i < MAX_SPS_COUNT; i++)
4249 av_freep(h->sps_buffers + i);
4250
4251 for (i = 0; i < MAX_PPS_COUNT; i++)
4252 av_freep(h->pps_buffers + i);
4253 }
4254
4255 static av_cold int h264_decode_end(AVCodecContext *avctx)
4256 {
4257 H264Context *h = avctx->priv_data;
4258 MpegEncContext *s = &h->s;
4259
4260 ff_h264_free_context(h);
4261
4262 ff_MPV_common_end(s);
4263
4264 // memset(h, 0, sizeof(H264Context));
4265
4266 return 0;
4267 }
4268
4269 static const AVProfile profiles[] = {
4270 { FF_PROFILE_H264_BASELINE, "Baseline" },
4271 { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
4272 { FF_PROFILE_H264_MAIN, "Main" },
4273 { FF_PROFILE_H264_EXTENDED, "Extended" },
4274 { FF_PROFILE_H264_HIGH, "High" },
4275 { FF_PROFILE_H264_HIGH_10, "High 10" },
4276 { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
4277 { FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
4278 { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
4279 { FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
4280 { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
4281 { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
4282 { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
4283 { FF_PROFILE_UNKNOWN },
4284 };
4285
4286 AVCodec ff_h264_decoder = {
4287 .name = "h264",
4288 .type = AVMEDIA_TYPE_VIDEO,
4289 .id = AV_CODEC_ID_H264,
4290 .priv_data_size = sizeof(H264Context),
4291 .init = ff_h264_decode_init,
4292 .close = h264_decode_end,
4293 .decode = decode_frame,
4294 .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 |
4295 CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS |
4296 CODEC_CAP_FRAME_THREADS,
4297 .flush = flush_dpb,
4298 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
4299 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
4300 .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context),
4301 .profiles = NULL_IF_CONFIG_SMALL(profiles),
4302 };
4303
4304 #if CONFIG_H264_VDPAU_DECODER
4305 AVCodec ff_h264_vdpau_decoder = {
4306 .name = "h264_vdpau",
4307 .type = AVMEDIA_TYPE_VIDEO,
4308 .id = AV_CODEC_ID_H264,
4309 .priv_data_size = sizeof(H264Context),
4310 .init = ff_h264_decode_init,
4311 .close = h264_decode_end,
4312 .decode = decode_frame,
4313 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
4314 .flush = flush_dpb,
4315 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
4316 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
4317 AV_PIX_FMT_NONE},
4318 .profiles = NULL_IF_CONFIG_SMALL(profiles),
4319 };
4320 #endif
A couple of patches to make building with MPlayer easier