2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #define UNCHECKED_BITSTREAM_READER 1
30 #include "libavutil/imgutils.h"
31 #include "libavutil/opt.h"
34 #include "cabac_functions.h"
37 #include "mpegvideo.h"
40 #include "h264_mvpred.h"
43 #include "rectangle.h"
45 #include "vdpau_internal.h"
46 #include "libavutil/avassert.h"
51 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
53 static const uint8_t rem6[QP_MAX_NUM + 1] = {
54 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
55 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
56 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
57 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
61 static const uint8_t div6[QP_MAX_NUM + 1] = {
62 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
63 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
64 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10,
65 10,10,10,11,11,11,11,11,11,12,12,12,12,12,12,13,13,13, 13, 13, 13,
69 static const enum AVPixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
77 int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
79 H264Context *h = avctx->priv_data;
80 return h ? h->sps.num_reorder_frames : 0;
84 * Check if the top & left blocks are available if needed and
85 * change the dc mode so it only uses the available blocks.
87 int ff_h264_check_intra4x4_pred_mode(H264Context *h)
89 MpegEncContext *const s = &h->s;
90 static const int8_t top[12] = {
91 -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
93 static const int8_t left[12] = {
94 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
98 if (!(h->top_samples_available & 0x8000)) {
99 for (i = 0; i < 4; i++) {
100 int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]];
102 av_log(h->s.avctx, AV_LOG_ERROR,
103 "top block unavailable for requested intra4x4 mode %d at %d %d\n",
104 status, s->mb_x, s->mb_y);
107 h->intra4x4_pred_mode_cache[scan8[0] + i] = status;
112 if ((h->left_samples_available & 0x8888) != 0x8888) {
113 static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
114 for (i = 0; i < 4; i++)
115 if (!(h->left_samples_available & mask[i])) {
116 int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
118 av_log(h->s.avctx, AV_LOG_ERROR,
119 "left block unavailable for requested intra4x4 mode %d at %d %d\n",
120 status, s->mb_x, s->mb_y);
123 h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
129 } // FIXME cleanup like ff_h264_check_intra_pred_mode
132 * Check if the top & left blocks are available if needed and
133 * change the dc mode so it only uses the available blocks.
135 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
137 MpegEncContext *const s = &h->s;
138 static const int8_t top[7] = { LEFT_DC_PRED8x8, 1, -1, -1 };
139 static const int8_t left[7] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
142 av_log(h->s.avctx, AV_LOG_ERROR,
143 "out of range intra chroma pred mode at %d %d\n",
148 if (!(h->top_samples_available & 0x8000)) {
151 av_log(h->s.avctx, AV_LOG_ERROR,
152 "top block unavailable for requested intra mode at %d %d\n",
158 if ((h->left_samples_available & 0x8080) != 0x8080) {
160 if (is_chroma && (h->left_samples_available & 0x8080)) {
161 // mad cow disease mode, aka MBAFF + constrained_intra_pred
162 mode = ALZHEIMER_DC_L0T_PRED8x8 +
163 (!(h->left_samples_available & 0x8000)) +
164 2 * (mode == DC_128_PRED8x8);
167 av_log(h->s.avctx, AV_LOG_ERROR,
168 "left block unavailable for requested intra mode at %d %d\n",
177 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
178 int *dst_length, int *consumed, int length)
184 // src[0]&0x80; // forbidden bit
185 h->nal_ref_idc = src[0] >> 5;
186 h->nal_unit_type = src[0] & 0x1F;
191 #define STARTCODE_TEST \
192 if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
193 if (src[i + 2] != 3) { \
194 /* startcode, so we must be past the end */ \
199 #if HAVE_FAST_UNALIGNED
200 #define FIND_FIRST_ZERO \
201 if (i > 0 && !src[i]) \
206 for (i = 0; i + 1 < length; i += 9) {
207 if (!((~AV_RN64A(src + i) &
208 (AV_RN64A(src + i) - 0x0100010001000101ULL)) &
209 0x8000800080008080ULL))
216 for (i = 0; i + 1 < length; i += 5) {
217 if (!((~AV_RN32A(src + i) &
218 (AV_RN32A(src + i) - 0x01000101U)) &
227 for (i = 0; i + 1 < length; i += 2) {
230 if (i > 0 && src[i - 1] == 0)
236 // use second escape buffer for inter data
237 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0;
239 si = h->rbsp_buffer_size[bufidx];
240 av_fast_padded_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+MAX_MBPAIR_SIZE);
241 dst = h->rbsp_buffer[bufidx];
246 if(i>=length-1){ //no escaped 0
248 *consumed= length+1; //+1 for the header
249 if(h->s.avctx->flags2 & CODEC_FLAG2_FAST){
252 memcpy(dst, src, length);
259 while (si + 2 < length) {
260 // remove escapes (very rare 1:2^22)
261 if (src[si + 2] > 3) {
262 dst[di++] = src[si++];
263 dst[di++] = src[si++];
264 } else if (src[si] == 0 && src[si + 1] == 0) {
265 if (src[si + 2] == 3) { // escape
270 } else // next start code
274 dst[di++] = src[si++];
277 dst[di++] = src[si++];
280 memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
283 *consumed = si + 1; // +1 for the header
284 /* FIXME store exact number of bits in the getbitcontext
285 * (it is needed for decoding) */
290 * Identify the exact end of the bitstream
291 * @return the length of the trailing, or 0 if damaged
293 static int decode_rbsp_trailing(H264Context *h, const uint8_t *src)
298 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
300 for (r = 1; r < 9; r++) {
308 static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n,
309 int height, int y_offset, int list)
311 int raw_my = h->mv_cache[list][scan8[n]][1];
312 int filter_height = (raw_my & 3) ? 2 : 0;
313 int full_my = (raw_my >> 2) + y_offset;
314 int top = full_my - filter_height;
315 int bottom = full_my + filter_height + height;
317 return FFMAX(abs(top), bottom);
320 static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n,
321 int height, int y_offset, int list0,
322 int list1, int *nrefs)
324 MpegEncContext *const s = &h->s;
327 y_offset += 16 * (s->mb_y >> MB_FIELD);
330 int ref_n = h->ref_cache[0][scan8[n]];
331 Picture *ref = &h->ref_list[0][ref_n];
333 // Error resilience puts the current picture in the ref list.
334 // Don't try to wait on these as it will cause a deadlock.
335 // Fields can wait on each other, though.
336 if (ref->f.thread_opaque != s->current_picture.f.thread_opaque ||
337 (ref->f.reference & 3) != s->picture_structure) {
338 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
339 if (refs[0][ref_n] < 0)
341 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
346 int ref_n = h->ref_cache[1][scan8[n]];
347 Picture *ref = &h->ref_list[1][ref_n];
349 if (ref->f.thread_opaque != s->current_picture.f.thread_opaque ||
350 (ref->f.reference & 3) != s->picture_structure) {
351 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
352 if (refs[1][ref_n] < 0)
354 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
360 * Wait until all reference frames are available for MC operations.
362 * @param h the H264 context
364 static void await_references(H264Context *h)
366 MpegEncContext *const s = &h->s;
367 const int mb_xy = h->mb_xy;
368 const int mb_type = s->current_picture.f.mb_type[mb_xy];
370 int nrefs[2] = { 0 };
373 memset(refs, -1, sizeof(refs));
375 if (IS_16X16(mb_type)) {
376 get_lowest_part_y(h, refs, 0, 16, 0,
377 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
378 } else if (IS_16X8(mb_type)) {
379 get_lowest_part_y(h, refs, 0, 8, 0,
380 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
381 get_lowest_part_y(h, refs, 8, 8, 8,
382 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
383 } else if (IS_8X16(mb_type)) {
384 get_lowest_part_y(h, refs, 0, 16, 0,
385 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
386 get_lowest_part_y(h, refs, 4, 16, 0,
387 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
391 av_assert2(IS_8X8(mb_type));
393 for (i = 0; i < 4; i++) {
394 const int sub_mb_type = h->sub_mb_type[i];
396 int y_offset = (i & 2) << 2;
398 if (IS_SUB_8X8(sub_mb_type)) {
399 get_lowest_part_y(h, refs, n, 8, y_offset,
400 IS_DIR(sub_mb_type, 0, 0),
401 IS_DIR(sub_mb_type, 0, 1),
403 } else if (IS_SUB_8X4(sub_mb_type)) {
404 get_lowest_part_y(h, refs, n, 4, y_offset,
405 IS_DIR(sub_mb_type, 0, 0),
406 IS_DIR(sub_mb_type, 0, 1),
408 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,
409 IS_DIR(sub_mb_type, 0, 0),
410 IS_DIR(sub_mb_type, 0, 1),
412 } else if (IS_SUB_4X8(sub_mb_type)) {
413 get_lowest_part_y(h, refs, n, 8, y_offset,
414 IS_DIR(sub_mb_type, 0, 0),
415 IS_DIR(sub_mb_type, 0, 1),
417 get_lowest_part_y(h, refs, n + 1, 8, y_offset,
418 IS_DIR(sub_mb_type, 0, 0),
419 IS_DIR(sub_mb_type, 0, 1),
423 av_assert2(IS_SUB_4X4(sub_mb_type));
424 for (j = 0; j < 4; j++) {
425 int sub_y_offset = y_offset + 2 * (j & 2);
426 get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,
427 IS_DIR(sub_mb_type, 0, 0),
428 IS_DIR(sub_mb_type, 0, 1),
435 for (list = h->list_count - 1; list >= 0; list--)
436 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
437 int row = refs[list][ref];
439 Picture *ref_pic = &h->ref_list[list][ref];
440 int ref_field = ref_pic->f.reference - 1;
441 int ref_field_picture = ref_pic->field_picture;
442 int pic_height = 16 * s->mb_height >> ref_field_picture;
447 if (!FIELD_PICTURE && ref_field_picture) { // frame referencing two fields
448 ff_thread_await_progress(&ref_pic->f,
449 FFMIN((row >> 1) - !(row & 1),
452 ff_thread_await_progress(&ref_pic->f,
453 FFMIN((row >> 1), pic_height - 1),
455 } else if (FIELD_PICTURE && !ref_field_picture) { // field referencing one field of a frame
456 ff_thread_await_progress(&ref_pic->f,
457 FFMIN(row * 2 + ref_field,
460 } else if (FIELD_PICTURE) {
461 ff_thread_await_progress(&ref_pic->f,
462 FFMIN(row, pic_height - 1),
465 ff_thread_await_progress(&ref_pic->f,
466 FFMIN(row, pic_height - 1),
473 static av_always_inline void mc_dir_part(H264Context *h, Picture *pic,
474 int n, int square, int height,
476 uint8_t *dest_y, uint8_t *dest_cb,
478 int src_x_offset, int src_y_offset,
479 qpel_mc_func *qpix_op,
480 h264_chroma_mc_func chroma_op,
481 int pixel_shift, int chroma_idc)
483 MpegEncContext *const s = &h->s;
484 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
485 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
486 const int luma_xy = (mx & 3) + ((my & 3) << 2);
487 int offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;
488 uint8_t *src_y = pic->f.data[0] + offset;
489 uint8_t *src_cb, *src_cr;
490 int extra_width = h->emu_edge_width;
491 int extra_height = h->emu_edge_height;
493 const int full_mx = mx >> 2;
494 const int full_my = my >> 2;
495 const int pic_width = 16 * s->mb_width;
496 const int pic_height = 16 * s->mb_height >> MB_FIELD;
504 if (full_mx < 0 - extra_width ||
505 full_my < 0 - extra_height ||
506 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
507 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
508 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
509 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,
511 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
512 full_my - 2, pic_width, pic_height);
513 src_y = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
517 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?
519 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
521 if (CONFIG_GRAY && s->flags & CODEC_FLAG_GRAY)
524 if (chroma_idc == 3 /* yuv444 */) {
525 src_cb = pic->f.data[1] + offset;
527 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
528 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,
530 16 + 5, 16 + 5 /*FIXME*/,
531 full_mx - 2, full_my - 2,
532 pic_width, pic_height);
533 src_cb = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
535 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?
537 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);
539 src_cr = pic->f.data[2] + offset;
541 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
542 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,
544 16 + 5, 16 + 5 /*FIXME*/,
545 full_mx - 2, full_my - 2,
546 pic_width, pic_height);
547 src_cr = s->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
549 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?
551 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);
555 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
556 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD) {
557 // chroma offset when predicting from a field of opposite parity
558 my += 2 * ((s->mb_y & 1) - (pic->f.reference - 1));
559 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
562 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +
563 (my >> ysh) * h->mb_uvlinesize;
564 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +
565 (my >> ysh) * h->mb_uvlinesize;
568 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize,
569 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
570 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
571 src_cb = s->edge_emu_buffer;
573 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,
574 height >> (chroma_idc == 1 /* yuv420 */),
575 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
578 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize,
579 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
580 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
581 src_cr = s->edge_emu_buffer;
583 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
584 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
587 static av_always_inline void mc_part_std(H264Context *h, int n, int square,
588 int height, int delta,
589 uint8_t *dest_y, uint8_t *dest_cb,
591 int x_offset, int y_offset,
592 qpel_mc_func *qpix_put,
593 h264_chroma_mc_func chroma_put,
594 qpel_mc_func *qpix_avg,
595 h264_chroma_mc_func chroma_avg,
596 int list0, int list1,
597 int pixel_shift, int chroma_idc)
599 MpegEncContext *const s = &h->s;
600 qpel_mc_func *qpix_op = qpix_put;
601 h264_chroma_mc_func chroma_op = chroma_put;
603 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
604 if (chroma_idc == 3 /* yuv444 */) {
605 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
606 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
607 } else if (chroma_idc == 2 /* yuv422 */) {
608 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
609 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
610 } else { /* yuv420 */
611 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
612 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
614 x_offset += 8 * s->mb_x;
615 y_offset += 8 * (s->mb_y >> MB_FIELD);
618 Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];
619 mc_dir_part(h, ref, n, square, height, delta, 0,
620 dest_y, dest_cb, dest_cr, x_offset, y_offset,
621 qpix_op, chroma_op, pixel_shift, chroma_idc);
624 chroma_op = chroma_avg;
628 Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];
629 mc_dir_part(h, ref, n, square, height, delta, 1,
630 dest_y, dest_cb, dest_cr, x_offset, y_offset,
631 qpix_op, chroma_op, pixel_shift, chroma_idc);
635 static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,
636 int height, int delta,
637 uint8_t *dest_y, uint8_t *dest_cb,
639 int x_offset, int y_offset,
640 qpel_mc_func *qpix_put,
641 h264_chroma_mc_func chroma_put,
642 h264_weight_func luma_weight_op,
643 h264_weight_func chroma_weight_op,
644 h264_biweight_func luma_weight_avg,
645 h264_biweight_func chroma_weight_avg,
646 int list0, int list1,
647 int pixel_shift, int chroma_idc)
649 MpegEncContext *const s = &h->s;
652 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
653 if (chroma_idc == 3 /* yuv444 */) {
654 chroma_height = height;
655 chroma_weight_avg = luma_weight_avg;
656 chroma_weight_op = luma_weight_op;
657 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
658 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
659 } else if (chroma_idc == 2 /* yuv422 */) {
660 chroma_height = height;
661 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
662 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
663 } else { /* yuv420 */
664 chroma_height = height >> 1;
665 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
666 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
668 x_offset += 8 * s->mb_x;
669 y_offset += 8 * (s->mb_y >> MB_FIELD);
671 if (list0 && list1) {
672 /* don't optimize for luma-only case, since B-frames usually
673 * use implicit weights => chroma too. */
674 uint8_t *tmp_cb = h->bipred_scratchpad;
675 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);
676 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;
677 int refn0 = h->ref_cache[0][scan8[n]];
678 int refn1 = h->ref_cache[1][scan8[n]];
680 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,
681 dest_y, dest_cb, dest_cr,
682 x_offset, y_offset, qpix_put, chroma_put,
683 pixel_shift, chroma_idc);
684 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,
685 tmp_y, tmp_cb, tmp_cr,
686 x_offset, y_offset, qpix_put, chroma_put,
687 pixel_shift, chroma_idc);
689 if (h->use_weight == 2) {
690 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y & 1];
691 int weight1 = 64 - weight0;
692 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,
693 height, 5, weight0, weight1, 0);
694 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,
695 chroma_height, 5, weight0, weight1, 0);
696 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,
697 chroma_height, 5, weight0, weight1, 0);
699 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,
700 h->luma_log2_weight_denom,
701 h->luma_weight[refn0][0][0],
702 h->luma_weight[refn1][1][0],
703 h->luma_weight[refn0][0][1] +
704 h->luma_weight[refn1][1][1]);
705 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,
706 h->chroma_log2_weight_denom,
707 h->chroma_weight[refn0][0][0][0],
708 h->chroma_weight[refn1][1][0][0],
709 h->chroma_weight[refn0][0][0][1] +
710 h->chroma_weight[refn1][1][0][1]);
711 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,
712 h->chroma_log2_weight_denom,
713 h->chroma_weight[refn0][0][1][0],
714 h->chroma_weight[refn1][1][1][0],
715 h->chroma_weight[refn0][0][1][1] +
716 h->chroma_weight[refn1][1][1][1]);
719 int list = list1 ? 1 : 0;
720 int refn = h->ref_cache[list][scan8[n]];
721 Picture *ref = &h->ref_list[list][refn];
722 mc_dir_part(h, ref, n, square, height, delta, list,
723 dest_y, dest_cb, dest_cr, x_offset, y_offset,
724 qpix_put, chroma_put, pixel_shift, chroma_idc);
726 luma_weight_op(dest_y, h->mb_linesize, height,
727 h->luma_log2_weight_denom,
728 h->luma_weight[refn][list][0],
729 h->luma_weight[refn][list][1]);
730 if (h->use_weight_chroma) {
731 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,
732 h->chroma_log2_weight_denom,
733 h->chroma_weight[refn][list][0][0],
734 h->chroma_weight[refn][list][0][1]);
735 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,
736 h->chroma_log2_weight_denom,
737 h->chroma_weight[refn][list][1][0],
738 h->chroma_weight[refn][list][1][1]);
743 static av_always_inline void prefetch_motion(H264Context *h, int list,
744 int pixel_shift, int chroma_idc)
746 /* fetch pixels for estimated mv 4 macroblocks ahead
747 * optimized for 64byte cache lines */
748 MpegEncContext *const s = &h->s;
749 const int refn = h->ref_cache[list][scan8[0]];
751 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * s->mb_x + 8;
752 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * s->mb_y;
753 uint8_t **src = h->ref_list[list][refn].f.data;
754 int off = (mx << pixel_shift) +
755 (my + (s->mb_x & 3) * 4) * h->mb_linesize +
757 s->vdsp.prefetch(src[0] + off, s->linesize, 4);
758 if (chroma_idc == 3 /* yuv444 */) {
759 s->vdsp.prefetch(src[1] + off, s->linesize, 4);
760 s->vdsp.prefetch(src[2] + off, s->linesize, 4);
762 off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (s->mb_x&7))*s->uvlinesize;
763 s->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
768 static void free_tables(H264Context *h, int free_rbsp)
773 av_freep(&h->intra4x4_pred_mode);
774 av_freep(&h->chroma_pred_mode_table);
775 av_freep(&h->cbp_table);
776 av_freep(&h->mvd_table[0]);
777 av_freep(&h->mvd_table[1]);
778 av_freep(&h->direct_table);
779 av_freep(&h->non_zero_count);
780 av_freep(&h->slice_table_base);
781 h->slice_table = NULL;
782 av_freep(&h->list_counts);
784 av_freep(&h->mb2b_xy);
785 av_freep(&h->mb2br_xy);
787 for (i = 0; i < MAX_THREADS; i++) {
788 hx = h->thread_context[i];
791 av_freep(&hx->top_borders[1]);
792 av_freep(&hx->top_borders[0]);
793 av_freep(&hx->bipred_scratchpad);
795 av_freep(&hx->rbsp_buffer[1]);
796 av_freep(&hx->rbsp_buffer[0]);
797 hx->rbsp_buffer_size[0] = 0;
798 hx->rbsp_buffer_size[1] = 0;
801 av_freep(&h->thread_context[i]);
805 static void init_dequant8_coeff_table(H264Context *h)
808 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
810 for (i = 0; i < 6; i++) {
811 h->dequant8_coeff[i] = h->dequant8_buffer[i];
812 for (j = 0; j < i; j++)
813 if (!memcmp(h->pps.scaling_matrix8[j], h->pps.scaling_matrix8[i],
814 64 * sizeof(uint8_t))) {
815 h->dequant8_coeff[i] = h->dequant8_buffer[j];
821 for (q = 0; q < max_qp + 1; q++) {
824 for (x = 0; x < 64; x++)
825 h->dequant8_coeff[i][q][(x >> 3) | ((x & 7) << 3)] =
826 ((uint32_t)dequant8_coeff_init[idx][dequant8_coeff_init_scan[((x >> 1) & 12) | (x & 3)]] *
827 h->pps.scaling_matrix8[i][x]) << shift;
832 static void init_dequant4_coeff_table(H264Context *h)
835 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
836 for (i = 0; i < 6; i++) {
837 h->dequant4_coeff[i] = h->dequant4_buffer[i];
838 for (j = 0; j < i; j++)
839 if (!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i],
840 16 * sizeof(uint8_t))) {
841 h->dequant4_coeff[i] = h->dequant4_buffer[j];
847 for (q = 0; q < max_qp + 1; q++) {
848 int shift = div6[q] + 2;
850 for (x = 0; x < 16; x++)
851 h->dequant4_coeff[i][q][(x >> 2) | ((x << 2) & 0xF)] =
852 ((uint32_t)dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] *
853 h->pps.scaling_matrix4[i][x]) << shift;
858 static void init_dequant_tables(H264Context *h)
861 init_dequant4_coeff_table(h);
862 if (h->pps.transform_8x8_mode)
863 init_dequant8_coeff_table(h);
864 if (h->sps.transform_bypass) {
865 for (i = 0; i < 6; i++)
866 for (x = 0; x < 16; x++)
867 h->dequant4_coeff[i][0][x] = 1 << 6;
868 if (h->pps.transform_8x8_mode)
869 for (i = 0; i < 6; i++)
870 for (x = 0; x < 64; x++)
871 h->dequant8_coeff[i][0][x] = 1 << 6;
875 int ff_h264_alloc_tables(H264Context *h)
877 MpegEncContext *const s = &h->s;
878 const int big_mb_num = s->mb_stride * (s->mb_height + 1);
879 const int row_mb_num = 2*s->mb_stride*FFMAX(s->avctx->thread_count, 1);
882 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode,
883 row_mb_num * 8 * sizeof(uint8_t), fail)
884 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count,
885 big_mb_num * 48 * sizeof(uint8_t), fail)
886 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base,
887 (big_mb_num + s->mb_stride) * sizeof(*h->slice_table_base), fail)
888 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table,
889 big_mb_num * sizeof(uint16_t), fail)
890 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table,
891 big_mb_num * sizeof(uint8_t), fail)
892 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0],
893 16 * row_mb_num * sizeof(uint8_t), fail);
894 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1],
895 16 * row_mb_num * sizeof(uint8_t), fail);
896 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table,
897 4 * big_mb_num * sizeof(uint8_t), fail);
898 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts,
899 big_mb_num * sizeof(uint8_t), fail)
901 memset(h->slice_table_base, -1,
902 (big_mb_num + s->mb_stride) * sizeof(*h->slice_table_base));
903 h->slice_table = h->slice_table_base + s->mb_stride * 2 + 1;
905 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy,
906 big_mb_num * sizeof(uint32_t), fail);
907 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy,
908 big_mb_num * sizeof(uint32_t), fail);
909 for (y = 0; y < s->mb_height; y++)
910 for (x = 0; x < s->mb_width; x++) {
911 const int mb_xy = x + y * s->mb_stride;
912 const int b_xy = 4 * x + 4 * y * h->b_stride;
914 h->mb2b_xy[mb_xy] = b_xy;
915 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * s->mb_stride)));
918 if (!h->dequant4_coeff[0])
919 init_dequant_tables(h);
929 * Mimic alloc_tables(), but for every context thread.
931 static void clone_tables(H264Context *dst, H264Context *src, int i)
933 MpegEncContext *const s = &src->s;
934 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i * 8 * 2 * s->mb_stride;
935 dst->non_zero_count = src->non_zero_count;
936 dst->slice_table = src->slice_table;
937 dst->cbp_table = src->cbp_table;
938 dst->mb2b_xy = src->mb2b_xy;
939 dst->mb2br_xy = src->mb2br_xy;
940 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
941 dst->mvd_table[0] = src->mvd_table[0] + i * 8 * 2 * s->mb_stride;
942 dst->mvd_table[1] = src->mvd_table[1] + i * 8 * 2 * s->mb_stride;
943 dst->direct_table = src->direct_table;
944 dst->list_counts = src->list_counts;
945 dst->bipred_scratchpad = NULL;
946 ff_h264_pred_init(&dst->hpc, src->s.codec_id, src->sps.bit_depth_luma,
947 src->sps.chroma_format_idc);
952 * Allocate buffers which are not shared amongst multiple threads.
954 static int context_init(H264Context *h)
956 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0],
957 h->s.mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
958 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1],
959 h->s.mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
961 h->ref_cache[0][scan8[5] + 1] =
962 h->ref_cache[0][scan8[7] + 1] =
963 h->ref_cache[0][scan8[13] + 1] =
964 h->ref_cache[1][scan8[5] + 1] =
965 h->ref_cache[1][scan8[7] + 1] =
966 h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
971 return -1; // free_tables will clean up for us
974 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
975 int parse_extradata);
977 static av_cold void common_init(H264Context *h)
979 MpegEncContext *const s = &h->s;
981 s->width = s->avctx->width;
982 s->height = s->avctx->height;
983 s->codec_id = s->avctx->codec->id;
985 s->avctx->bits_per_raw_sample = 8;
986 h->cur_chroma_format_idc = 1;
988 ff_h264dsp_init(&h->h264dsp,
989 s->avctx->bits_per_raw_sample, h->cur_chroma_format_idc);
990 ff_h264_pred_init(&h->hpc, s->codec_id,
991 s->avctx->bits_per_raw_sample, h->cur_chroma_format_idc);
993 h->dequant_coeff_pps = -1;
994 s->unrestricted_mv = 1;
996 s->dsp.dct_bits = 16;
997 /* needed so that IDCT permutation is known early */
998 ff_dsputil_init(&s->dsp, s->avctx);
999 ff_videodsp_init(&s->vdsp, 8);
1001 memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t));
1002 memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t));
1005 int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
1007 AVCodecContext *avctx = h->s.avctx;
1009 if (!buf || size <= 0)
1013 int i, cnt, nalsize;
1014 const unsigned char *p = buf;
1019 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
1022 /* sps and pps in the avcC always have length coded with 2 bytes,
1023 * so put a fake nal_length_size = 2 while parsing them */
1024 h->nal_length_size = 2;
1025 // Decode sps from avcC
1026 cnt = *(p + 5) & 0x1f; // Number of sps
1028 for (i = 0; i < cnt; i++) {
1029 nalsize = AV_RB16(p) + 2;
1030 if(nalsize > size - (p-buf))
1032 if (decode_nal_units(h, p, nalsize, 1) < 0) {
1033 av_log(avctx, AV_LOG_ERROR,
1034 "Decoding sps %d from avcC failed\n", i);
1039 // Decode pps from avcC
1040 cnt = *(p++); // Number of pps
1041 for (i = 0; i < cnt; i++) {
1042 nalsize = AV_RB16(p) + 2;
1043 if(nalsize > size - (p-buf))
1045 if (decode_nal_units(h, p, nalsize, 1) < 0) {
1046 av_log(avctx, AV_LOG_ERROR,
1047 "Decoding pps %d from avcC failed\n", i);
1052 // Now store right nal length size, that will be used to parse all other nals
1053 h->nal_length_size = (buf[4] & 0x03) + 1;
1056 if (decode_nal_units(h, buf, size, 1) < 0)
1062 av_cold int ff_h264_decode_init(AVCodecContext *avctx)
1064 H264Context *h = avctx->priv_data;
1065 MpegEncContext *const s = &h->s;
1068 ff_MPV_decode_defaults(s);
1073 s->out_format = FMT_H264;
1074 s->workaround_bugs = avctx->workaround_bugs;
1077 // s->decode_mb = ff_h263_decode_mb;
1078 s->quarter_sample = 1;
1079 if (!avctx->has_b_frames)
1082 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1084 ff_h264_decode_init_vlc();
1087 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
1089 h->thread_context[0] = h;
1090 h->outputed_poc = h->next_outputed_poc = INT_MIN;
1091 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
1092 h->last_pocs[i] = INT_MIN;
1093 h->prev_poc_msb = 1 << 16;
1094 h->prev_frame_num = -1;
1096 ff_h264_reset_sei(h);
1097 if (avctx->codec_id == AV_CODEC_ID_H264) {
1098 if (avctx->ticks_per_frame == 1) {
1099 if(s->avctx->time_base.den < INT_MAX/2) {
1100 s->avctx->time_base.den *= 2;
1102 s->avctx->time_base.num /= 2;
1104 avctx->ticks_per_frame = 2;
1107 if (avctx->extradata_size > 0 && avctx->extradata &&
1108 ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size) < 0) {
1109 ff_h264_free_context(h);
1113 if (h->sps.bitstream_restriction_flag &&
1114 s->avctx->has_b_frames < h->sps.num_reorder_frames) {
1115 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1119 ff_init_cabac_states();
1124 #define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
1126 static void copy_picture_range(Picture **to, Picture **from, int count,
1127 MpegEncContext *new_base,
1128 MpegEncContext *old_base)
1132 for (i = 0; i < count; i++) {
1133 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
1134 IN_RANGE(from[i], old_base->picture,
1135 sizeof(Picture) * old_base->picture_count) ||
1137 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1141 static void copy_parameter_set(void **to, void **from, int count, int size)
1145 for (i = 0; i < count; i++) {
1146 if (to[i] && !from[i])
1148 else if (from[i] && !to[i])
1149 to[i] = av_malloc(size);
1152 memcpy(to[i], from[i], size);
1156 static int decode_init_thread_copy(AVCodecContext *avctx)
1158 H264Context *h = avctx->priv_data;
1160 if (!avctx->internal->is_copy)
1162 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1163 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1165 h->s.context_initialized = 0;
1170 #define copy_fields(to, from, start_field, end_field) \
1171 memcpy(&to->start_field, &from->start_field, \
1172 (char *)&to->end_field - (char *)&to->start_field)
1174 static int h264_slice_header_init(H264Context *, int);
1176 static int h264_set_parameter_from_sps(H264Context *h);
1178 static int decode_update_thread_context(AVCodecContext *dst,
1179 const AVCodecContext *src)
1181 H264Context *h = dst->priv_data, *h1 = src->priv_data;
1182 MpegEncContext *const s = &h->s, *const s1 = &h1->s;
1183 int inited = s->context_initialized, err;
1190 (s->width != s1->width ||
1191 s->height != s1->height ||
1192 s->mb_width != s1->mb_width ||
1193 s->mb_height != s1->mb_height ||
1194 h->sps.bit_depth_luma != h1->sps.bit_depth_luma ||
1195 h->sps.chroma_format_idc != h1->sps.chroma_format_idc ||
1196 h->sps.colorspace != h1->sps.colorspace)) {
1198 av_freep(&h->bipred_scratchpad);
1200 s->width = s1->width;
1201 s->height = s1->height;
1202 s->mb_height = s1->mb_height;
1203 h->b_stride = h1->b_stride;
1205 copy_parameter_set((void **)h->sps_buffers, (void **)h1->sps_buffers,
1206 MAX_SPS_COUNT, sizeof(SPS));
1208 copy_parameter_set((void **)h->pps_buffers, (void **)h1->pps_buffers,
1209 MAX_PPS_COUNT, sizeof(PPS));
1212 if ((err = h264_slice_header_init(h, 1)) < 0) {
1213 av_log(h->s.avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
1216 h->context_reinitialized = 1;
1218 /* update linesize on resize for h264. The h264 decoder doesn't
1219 * necessarily call ff_MPV_frame_start in the new thread */
1220 s->linesize = s1->linesize;
1221 s->uvlinesize = s1->uvlinesize;
1223 /* copy block_offset since frame_start may not be called */
1224 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
1225 h264_set_parameter_from_sps(h);
1228 err = ff_mpeg_update_thread_context(dst, src);
1233 for (i = 0; i < MAX_SPS_COUNT; i++)
1234 av_freep(h->sps_buffers + i);
1236 for (i = 0; i < MAX_PPS_COUNT; i++)
1237 av_freep(h->pps_buffers + i);
1239 // copy all fields after MpegEnc
1240 memcpy(&h->s + 1, &h1->s + 1,
1241 sizeof(H264Context) - sizeof(MpegEncContext));
1242 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1243 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1245 if (s1->context_initialized) {
1246 if (ff_h264_alloc_tables(h) < 0) {
1247 av_log(dst, AV_LOG_ERROR, "Could not allocate memory for h264\n");
1248 return AVERROR(ENOMEM);
1254 for (i = 0; i < 2; i++) {
1255 h->rbsp_buffer[i] = NULL;
1256 h->rbsp_buffer_size[i] = 0;
1258 h->bipred_scratchpad = NULL;
1260 h->thread_context[0] = h;
1262 s->dsp.clear_blocks(h->mb);
1263 s->dsp.clear_blocks(h->mb + (24 * 16 << h->pixel_shift));
1266 /* frame_start may not be called for the next thread (if it's decoding
1267 * a bottom field) so this has to be allocated here */
1268 if (!h->bipred_scratchpad && s->linesize)
1269 h->bipred_scratchpad = av_malloc(16 * 6 * s->linesize);
1271 // extradata/NAL handling
1272 h->is_avc = h1->is_avc;
1275 copy_parameter_set((void **)h->sps_buffers, (void **)h1->sps_buffers,
1276 MAX_SPS_COUNT, sizeof(SPS));
1278 copy_parameter_set((void **)h->pps_buffers, (void **)h1->pps_buffers,
1279 MAX_PPS_COUNT, sizeof(PPS));
1282 // Dequantization matrices
1283 // FIXME these are big - can they be only copied when PPS changes?
1284 copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1286 for (i = 0; i < 6; i++)
1287 h->dequant4_coeff[i] = h->dequant4_buffer[0] +
1288 (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
1290 for (i = 0; i < 6; i++)
1291 h->dequant8_coeff[i] = h->dequant8_buffer[0] +
1292 (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
1294 h->dequant_coeff_pps = h1->dequant_coeff_pps;
1297 copy_fields(h, h1, poc_lsb, redundant_pic_count);
1300 copy_fields(h, h1, ref_count, list_count);
1301 copy_fields(h, h1, ref_list, intra_gb);
1302 copy_fields(h, h1, short_ref, cabac_init_idc);
1304 copy_picture_range(h->short_ref, h1->short_ref, 32, s, s1);
1305 copy_picture_range(h->long_ref, h1->long_ref, 32, s, s1);
1306 copy_picture_range(h->delayed_pic, h1->delayed_pic,
1307 MAX_DELAYED_PIC_COUNT + 2, s, s1);
1309 h->last_slice_type = h1->last_slice_type;
1312 if (!s->current_picture_ptr)
1315 if (!s->droppable) {
1316 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1317 h->prev_poc_msb = h->poc_msb;
1318 h->prev_poc_lsb = h->poc_lsb;
1320 h->prev_frame_num_offset = h->frame_num_offset;
1321 h->prev_frame_num = h->frame_num;
1322 h->outputed_poc = h->next_outputed_poc;
1327 int ff_h264_frame_start(H264Context *h)
1329 MpegEncContext *const s = &h->s;
1331 const int pixel_shift = h->pixel_shift;
1333 if (ff_MPV_frame_start(s, s->avctx) < 0)
1335 ff_er_frame_start(s);
1337 * ff_MPV_frame_start uses pict_type to derive key_frame.
1338 * This is incorrect for H.264; IDR markings must be used.
1339 * Zero here; IDR markings per slice in frame or fields are ORed in later.
1340 * See decode_nal_units().
1342 s->current_picture_ptr->f.key_frame = 0;
1343 s->current_picture_ptr->sync = 0;
1344 s->current_picture_ptr->mmco_reset = 0;
1346 assert(s->linesize && s->uvlinesize);
1348 for (i = 0; i < 16; i++) {
1349 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * s->linesize * ((scan8[i] - scan8[0]) >> 3);
1350 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * s->linesize * ((scan8[i] - scan8[0]) >> 3);
1352 for (i = 0; i < 16; i++) {
1353 h->block_offset[16 + i] =
1354 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * s->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1355 h->block_offset[48 + 16 + i] =
1356 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * s->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1359 /* can't be in alloc_tables because linesize isn't known there.
1360 * FIXME: redo bipred weight to not require extra buffer? */
1361 for (i = 0; i < s->slice_context_count; i++)
1362 if (h->thread_context[i] && !h->thread_context[i]->bipred_scratchpad)
1363 h->thread_context[i]->bipred_scratchpad = av_malloc(16 * 6 * s->linesize);
1365 /* Some macroblocks can be accessed before they're available in case
1366 * of lost slices, MBAFF or threading. */
1367 memset(h->slice_table, -1,
1368 (s->mb_height * s->mb_stride - 1) * sizeof(*h->slice_table));
1370 // s->decode = (s->flags & CODEC_FLAG_PSNR) || !s->encoding ||
1371 // s->current_picture.f.reference /* || h->contains_intra */ || 1;
1373 /* We mark the current picture as non-reference after allocating it, so
1374 * that if we break out due to an error it can be released automatically
1375 * in the next ff_MPV_frame_start().
1376 * SVQ3 as well as most other codecs have only last/next/current and thus
1377 * get released even with set reference, besides SVQ3 and others do not
1378 * mark frames as reference later "naturally". */
1379 if (s->codec_id != AV_CODEC_ID_SVQ3)
1380 s->current_picture_ptr->f.reference = 0;
1382 s->current_picture_ptr->field_poc[0] =
1383 s->current_picture_ptr->field_poc[1] = INT_MAX;
1385 h->next_output_pic = NULL;
1387 assert(s->current_picture_ptr->long_ref == 0);
1393 * Run setup operations that must be run after slice header decoding.
1394 * This includes finding the next displayed frame.
1396 * @param h h264 master context
1397 * @param setup_finished enough NALs have been read that we can call
1398 * ff_thread_finish_setup()
1400 static void decode_postinit(H264Context *h, int setup_finished)
1402 MpegEncContext *const s = &h->s;
1403 Picture *out = s->current_picture_ptr;
1404 Picture *cur = s->current_picture_ptr;
1405 int i, pics, out_of_order, out_idx;
1407 s->current_picture_ptr->f.qscale_type = FF_QSCALE_TYPE_H264;
1408 s->current_picture_ptr->f.pict_type = s->pict_type;
1410 if (h->next_output_pic)
1413 if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
1414 /* FIXME: if we have two PAFF fields in one packet, we can't start
1415 * the next thread here. If we have one field per packet, we can.
1416 * The check in decode_nal_units() is not good enough to find this
1417 * yet, so we assume the worst for now. */
1418 // if (setup_finished)
1419 // ff_thread_finish_setup(s->avctx);
1423 cur->f.interlaced_frame = 0;
1424 cur->f.repeat_pict = 0;
1426 /* Signal interlacing information externally. */
1427 /* Prioritize picture timing SEI information over used
1428 * decoding process if it exists. */
1430 if (h->sps.pic_struct_present_flag) {
1431 switch (h->sei_pic_struct) {
1432 case SEI_PIC_STRUCT_FRAME:
1434 case SEI_PIC_STRUCT_TOP_FIELD:
1435 case SEI_PIC_STRUCT_BOTTOM_FIELD:
1436 cur->f.interlaced_frame = 1;
1438 case SEI_PIC_STRUCT_TOP_BOTTOM:
1439 case SEI_PIC_STRUCT_BOTTOM_TOP:
1440 if (FIELD_OR_MBAFF_PICTURE)
1441 cur->f.interlaced_frame = 1;
1443 // try to flag soft telecine progressive
1444 cur->f.interlaced_frame = h->prev_interlaced_frame;
1446 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1447 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1448 /* Signal the possibility of telecined film externally
1449 * (pic_struct 5,6). From these hints, let the applications
1450 * decide if they apply deinterlacing. */
1451 cur->f.repeat_pict = 1;
1453 case SEI_PIC_STRUCT_FRAME_DOUBLING:
1454 // Force progressive here, doubling interlaced frame is a bad idea.
1455 cur->f.repeat_pict = 2;
1457 case SEI_PIC_STRUCT_FRAME_TRIPLING:
1458 cur->f.repeat_pict = 4;
1462 if ((h->sei_ct_type & 3) &&
1463 h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
1464 cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0;
1466 /* Derive interlacing flag from used decoding process. */
1467 cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE;
1469 h->prev_interlaced_frame = cur->f.interlaced_frame;
1471 if (cur->field_poc[0] != cur->field_poc[1]) {
1472 /* Derive top_field_first from field pocs. */
1473 cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1];
1475 if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) {
1476 /* Use picture timing SEI information. Even if it is a
1477 * information of a past frame, better than nothing. */
1478 if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
1479 h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1480 cur->f.top_field_first = 1;
1482 cur->f.top_field_first = 0;
1484 /* Most likely progressive */
1485 cur->f.top_field_first = 0;
1489 cur->mmco_reset = h->mmco_reset;
1491 // FIXME do something with unavailable reference frames
1493 /* Sort B-frames into display order */
1495 if (h->sps.bitstream_restriction_flag &&
1496 s->avctx->has_b_frames < h->sps.num_reorder_frames) {
1497 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1501 if (s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
1502 !h->sps.bitstream_restriction_flag) {
1503 s->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1;
1507 for (i = 0; 1; i++) {
1508 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1510 h->last_pocs[i-1] = cur->poc;
1513 h->last_pocs[i-1]= h->last_pocs[i];
1516 out_of_order = MAX_DELAYED_PIC_COUNT - i;
1517 if( cur->f.pict_type == AV_PICTURE_TYPE_B
1518 || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
1519 out_of_order = FFMAX(out_of_order, 1);
1520 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1521 av_log(s->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1522 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1523 h->last_pocs[i] = INT_MIN;
1524 h->last_pocs[0] = cur->poc;
1525 cur->mmco_reset = 1;
1526 } else if(s->avctx->has_b_frames < out_of_order && !h->sps.bitstream_restriction_flag){
1527 av_log(s->avctx, AV_LOG_VERBOSE, "Increasing reorder buffer to %d\n", out_of_order);
1528 s->avctx->has_b_frames = out_of_order;
1533 while (h->delayed_pic[pics])
1536 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1538 h->delayed_pic[pics++] = cur;
1539 if (cur->f.reference == 0)
1540 cur->f.reference = DELAYED_PIC_REF;
1542 out = h->delayed_pic[0];
1544 for (i = 1; h->delayed_pic[i] &&
1545 !h->delayed_pic[i]->f.key_frame &&
1546 !h->delayed_pic[i]->mmco_reset;
1548 if (h->delayed_pic[i]->poc < out->poc) {
1549 out = h->delayed_pic[i];
1552 if (s->avctx->has_b_frames == 0 &&
1553 (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset))
1554 h->next_outputed_poc = INT_MIN;
1555 out_of_order = out->poc < h->next_outputed_poc;
1557 if (out_of_order || pics > s->avctx->has_b_frames) {
1558 out->f.reference &= ~DELAYED_PIC_REF;
1559 // for frame threading, the owner must be the second field's thread or
1560 // else the first thread can release the picture and reuse it unsafely
1562 for (i = out_idx; h->delayed_pic[i]; i++)
1563 h->delayed_pic[i] = h->delayed_pic[i + 1];
1565 if (!out_of_order && pics > s->avctx->has_b_frames) {
1566 h->next_output_pic = out;
1567 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) {
1568 h->next_outputed_poc = INT_MIN;
1570 h->next_outputed_poc = out->poc;
1572 av_log(s->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1575 if (h->next_output_pic && h->next_output_pic->sync) {
1580 ff_thread_finish_setup(s->avctx);
1583 static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y,
1584 uint8_t *src_cb, uint8_t *src_cr,
1585 int linesize, int uvlinesize,
1588 MpegEncContext *const s = &h->s;
1589 uint8_t *top_border;
1591 const int pixel_shift = h->pixel_shift;
1592 int chroma444 = CHROMA444;
1593 int chroma422 = CHROMA422;
1596 src_cb -= uvlinesize;
1597 src_cr -= uvlinesize;
1599 if (!simple && FRAME_MBAFF) {
1602 top_border = h->top_borders[0][s->mb_x];
1603 AV_COPY128(top_border, src_y + 15 * linesize);
1605 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
1606 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1609 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
1610 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
1611 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
1612 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
1614 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
1615 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
1617 } else if (chroma422) {
1619 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
1620 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
1622 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
1623 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
1627 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
1628 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
1630 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
1631 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
1636 } else if (MB_MBAFF) {
1642 top_border = h->top_borders[top_idx][s->mb_x];
1643 /* There are two lines saved, the line above the top macroblock
1644 * of a pair, and the line above the bottom macroblock. */
1645 AV_COPY128(top_border, src_y + 16 * linesize);
1647 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
1649 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1652 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
1653 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
1654 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
1655 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
1657 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
1658 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
1660 } else if (chroma422) {
1662 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
1663 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
1665 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
1666 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
1670 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
1671 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
1673 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
1674 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
1680 static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
1681 uint8_t *src_cb, uint8_t *src_cr,
1682 int linesize, int uvlinesize,
1683 int xchg, int chroma444,
1684 int simple, int pixel_shift)
1686 MpegEncContext *const s = &h->s;
1687 int deblock_topleft;
1690 uint8_t *top_border_m1;
1691 uint8_t *top_border;
1693 if (!simple && FRAME_MBAFF) {
1698 top_idx = MB_MBAFF ? 0 : 1;
1702 if (h->deblocking_filter == 2) {
1703 deblock_topleft = h->slice_table[h->mb_xy - 1 - s->mb_stride] == h->slice_num;
1704 deblock_top = h->top_type;
1706 deblock_topleft = (s->mb_x > 0);
1707 deblock_top = (s->mb_y > !!MB_FIELD);
1710 src_y -= linesize + 1 + pixel_shift;
1711 src_cb -= uvlinesize + 1 + pixel_shift;
1712 src_cr -= uvlinesize + 1 + pixel_shift;
1714 top_border_m1 = h->top_borders[top_idx][s->mb_x - 1];
1715 top_border = h->top_borders[top_idx][s->mb_x];
1717 #define XCHG(a, b, xchg) \
1718 if (pixel_shift) { \
1720 AV_SWAP64(b + 0, a + 0); \
1721 AV_SWAP64(b + 8, a + 8); \
1731 if (deblock_topleft) {
1732 XCHG(top_border_m1 + (8 << pixel_shift),
1733 src_y - (7 << pixel_shift), 1);
1735 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
1736 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
1737 if (s->mb_x + 1 < s->mb_width) {
1738 XCHG(h->top_borders[top_idx][s->mb_x + 1],
1739 src_y + (17 << pixel_shift), 1);
1742 if (simple || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
1744 if (deblock_topleft) {
1745 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1746 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1748 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
1749 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
1750 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
1751 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
1752 if (s->mb_x + 1 < s->mb_width) {
1753 XCHG(h->top_borders[top_idx][s->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
1754 XCHG(h->top_borders[top_idx][s->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
1758 if (deblock_topleft) {
1759 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1760 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1762 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
1763 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
1769 static av_always_inline int dctcoef_get(DCTELEM *mb, int high_bit_depth,
1772 if (high_bit_depth) {
1773 return AV_RN32A(((int32_t *)mb) + index);
1775 return AV_RN16A(mb + index);
1778 static av_always_inline void dctcoef_set(DCTELEM *mb, int high_bit_depth,
1779 int index, int value)
1781 if (high_bit_depth) {
1782 AV_WN32A(((int32_t *)mb) + index, value);
1784 AV_WN16A(mb + index, value);
1787 static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
1788 int mb_type, int is_h264,
1790 int transform_bypass,
1794 uint8_t *dest_y, int p)
1796 MpegEncContext *const s = &h->s;
1797 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1798 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1800 int qscale = p == 0 ? s->qscale : h->chroma_qp[p - 1];
1801 block_offset += 16 * p;
1802 if (IS_INTRA4x4(mb_type)) {
1803 if (simple || !s->encoding) {
1804 if (IS_8x8DCT(mb_type)) {
1805 if (transform_bypass) {
1807 idct_add = s->dsp.add_pixels8;
1809 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1810 idct_add = h->h264dsp.h264_idct8_add;
1812 for (i = 0; i < 16; i += 4) {
1813 uint8_t *const ptr = dest_y + block_offset[i];
1814 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
1815 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
1816 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1818 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
1819 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
1820 (h->topright_samples_available << i) & 0x4000, linesize);
1822 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1823 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1825 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1830 if (transform_bypass) {
1832 idct_add = s->dsp.add_pixels4;
1834 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1835 idct_add = h->h264dsp.h264_idct_add;
1837 for (i = 0; i < 16; i++) {
1838 uint8_t *const ptr = dest_y + block_offset[i];
1839 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
1841 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
1842 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1847 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
1848 const int topright_avail = (h->topright_samples_available << i) & 0x8000;
1849 av_assert2(s->mb_y || linesize <= block_offset[i]);
1850 if (!topright_avail) {
1852 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
1853 topright = (uint8_t *)&tr_high;
1855 tr = ptr[3 - linesize] * 0x01010101u;
1856 topright = (uint8_t *)&tr;
1859 topright = ptr + (4 << pixel_shift) - linesize;
1863 h->hpc.pred4x4[dir](ptr, topright, linesize);
1864 nnz = h->non_zero_count_cache[scan8[i + p * 16]];
1867 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1868 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1870 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
1871 } else if (CONFIG_SVQ3_DECODER)
1872 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
1879 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);
1881 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
1882 if (!transform_bypass)
1883 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),
1885 h->dequant4_coeff[p][qscale][0]);
1887 static const uint8_t dc_mapping[16] = {
1888 0 * 16, 1 * 16, 4 * 16, 5 * 16,
1889 2 * 16, 3 * 16, 6 * 16, 7 * 16,
1890 8 * 16, 9 * 16, 12 * 16, 13 * 16,
1891 10 * 16, 11 * 16, 14 * 16, 15 * 16 };
1892 for (i = 0; i < 16; i++)
1893 dctcoef_set(h->mb + (p * 256 << pixel_shift),
1894 pixel_shift, dc_mapping[i],
1895 dctcoef_get(h->mb_luma_dc[p],
1899 } else if (CONFIG_SVQ3_DECODER)
1900 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
1901 h->mb_luma_dc[p], qscale);
1905 static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,
1906 int is_h264, int simple,
1907 int transform_bypass,
1911 uint8_t *dest_y, int p)
1913 MpegEncContext *const s = &h->s;
1914 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1916 block_offset += 16 * p;
1917 if (!IS_INTRA4x4(mb_type)) {
1919 if (IS_INTRA16x16(mb_type)) {
1920 if (transform_bypass) {
1921 if (h->sps.profile_idc == 244 &&
1922 (h->intra16x16_pred_mode == VERT_PRED8x8 ||
1923 h->intra16x16_pred_mode == HOR_PRED8x8)) {
1924 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,
1925 h->mb + (p * 256 << pixel_shift),
1928 for (i = 0; i < 16; i++)
1929 if (h->non_zero_count_cache[scan8[i + p * 16]] ||
1930 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
1931 s->dsp.add_pixels4(dest_y + block_offset[i],
1932 h->mb + (i * 16 + p * 256 << pixel_shift),
1936 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
1937 h->mb + (p * 256 << pixel_shift),
1939 h->non_zero_count_cache + p * 5 * 8);
1941 } else if (h->cbp & 15) {
1942 if (transform_bypass) {
1943 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1944 idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8
1945 : s->dsp.add_pixels4;
1946 for (i = 0; i < 16; i += di)
1947 if (h->non_zero_count_cache[scan8[i + p * 16]])
1948 idct_add(dest_y + block_offset[i],
1949 h->mb + (i * 16 + p * 256 << pixel_shift),
1952 if (IS_8x8DCT(mb_type))
1953 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
1954 h->mb + (p * 256 << pixel_shift),
1956 h->non_zero_count_cache + p * 5 * 8);
1958 h->h264dsp.h264_idct_add16(dest_y, block_offset,
1959 h->mb + (p * 256 << pixel_shift),
1961 h->non_zero_count_cache + p * 5 * 8);
1964 } else if (CONFIG_SVQ3_DECODER) {
1965 for (i = 0; i < 16; i++)
1966 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {
1967 // FIXME benchmark weird rule, & below
1968 uint8_t *const ptr = dest_y + block_offset[i];
1969 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,
1970 s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1978 #include "h264_mb_template.c"
1982 #include "h264_mb_template.c"
1986 #include "h264_mb_template.c"
1988 void ff_h264_hl_decode_mb(H264Context *h)
1990 MpegEncContext *const s = &h->s;
1991 const int mb_xy = h->mb_xy;
1992 const int mb_type = s->current_picture.f.mb_type[mb_xy];
1993 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1996 if (is_complex || h->pixel_shift)
1997 hl_decode_mb_444_complex(h);
1999 hl_decode_mb_444_simple_8(h);
2000 } else if (is_complex) {
2001 hl_decode_mb_complex(h);
2002 } else if (h->pixel_shift) {
2003 hl_decode_mb_simple_16(h);
2005 hl_decode_mb_simple_8(h);
2008 static int pred_weight_table(H264Context *h)
2010 MpegEncContext *const s = &h->s;
2012 int luma_def, chroma_def;
2015 h->use_weight_chroma = 0;
2016 h->luma_log2_weight_denom = get_ue_golomb(&s->gb);
2017 if (h->sps.chroma_format_idc)
2018 h->chroma_log2_weight_denom = get_ue_golomb(&s->gb);
2019 luma_def = 1 << h->luma_log2_weight_denom;
2020 chroma_def = 1 << h->chroma_log2_weight_denom;
2022 for (list = 0; list < 2; list++) {
2023 h->luma_weight_flag[list] = 0;
2024 h->chroma_weight_flag[list] = 0;
2025 for (i = 0; i < h->ref_count[list]; i++) {
2026 int luma_weight_flag, chroma_weight_flag;
2028 luma_weight_flag = get_bits1(&s->gb);
2029 if (luma_weight_flag) {
2030 h->luma_weight[i][list][0] = get_se_golomb(&s->gb);
2031 h->luma_weight[i][list][1] = get_se_golomb(&s->gb);
2032 if (h->luma_weight[i][list][0] != luma_def ||
2033 h->luma_weight[i][list][1] != 0) {
2035 h->luma_weight_flag[list] = 1;
2038 h->luma_weight[i][list][0] = luma_def;
2039 h->luma_weight[i][list][1] = 0;
2042 if (h->sps.chroma_format_idc) {
2043 chroma_weight_flag = get_bits1(&s->gb);
2044 if (chroma_weight_flag) {
2046 for (j = 0; j < 2; j++) {
2047 h->chroma_weight[i][list][j][0] = get_se_golomb(&s->gb);
2048 h->chroma_weight[i][list][j][1] = get_se_golomb(&s->gb);
2049 if (h->chroma_weight[i][list][j][0] != chroma_def ||
2050 h->chroma_weight[i][list][j][1] != 0) {
2051 h->use_weight_chroma = 1;
2052 h->chroma_weight_flag[list] = 1;
2057 for (j = 0; j < 2; j++) {
2058 h->chroma_weight[i][list][j][0] = chroma_def;
2059 h->chroma_weight[i][list][j][1] = 0;
2064 if (h->slice_type_nos != AV_PICTURE_TYPE_B)
2067 h->use_weight = h->use_weight || h->use_weight_chroma;
2072 * Initialize implicit_weight table.
2073 * @param field 0/1 initialize the weight for interlaced MBAFF
2074 * -1 initializes the rest
2076 static void implicit_weight_table(H264Context *h, int field)
2078 MpegEncContext *const s = &h->s;
2079 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
2081 for (i = 0; i < 2; i++) {
2082 h->luma_weight_flag[i] = 0;
2083 h->chroma_weight_flag[i] = 0;
2087 if (s->picture_structure == PICT_FRAME) {
2088 cur_poc = s->current_picture_ptr->poc;
2090 cur_poc = s->current_picture_ptr->field_poc[s->picture_structure - 1];
2092 if (h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF &&
2093 h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2 * cur_poc) {
2095 h->use_weight_chroma = 0;
2099 ref_count0 = h->ref_count[0];
2100 ref_count1 = h->ref_count[1];
2102 cur_poc = s->current_picture_ptr->field_poc[field];
2104 ref_count0 = 16 + 2 * h->ref_count[0];
2105 ref_count1 = 16 + 2 * h->ref_count[1];
2109 h->use_weight_chroma = 2;
2110 h->luma_log2_weight_denom = 5;
2111 h->chroma_log2_weight_denom = 5;
2113 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
2114 int poc0 = h->ref_list[0][ref0].poc;
2115 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
2117 if (!h->ref_list[0][ref0].long_ref && !h->ref_list[1][ref1].long_ref) {
2118 int poc1 = h->ref_list[1][ref1].poc;
2119 int td = av_clip(poc1 - poc0, -128, 127);
2121 int tb = av_clip(cur_poc - poc0, -128, 127);
2122 int tx = (16384 + (FFABS(td) >> 1)) / td;
2123 int dist_scale_factor = (tb * tx + 32) >> 8;
2124 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
2125 w = 64 - dist_scale_factor;
2129 h->implicit_weight[ref0][ref1][0] =
2130 h->implicit_weight[ref0][ref1][1] = w;
2132 h->implicit_weight[ref0][ref1][field] = w;
2139 * instantaneous decoder refresh.
2141 static void idr(H264Context *h)
2144 ff_h264_remove_all_refs(h);
2145 h->prev_frame_num = 0;
2146 h->prev_frame_num_offset = 0;
2147 h->prev_poc_msb = 1<<16;
2148 h->prev_poc_lsb = 0;
2149 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
2150 h->last_pocs[i] = INT_MIN;
2153 /* forget old pics after a seek */
2154 static void flush_change(H264Context *h)
2156 h->outputed_poc = h->next_outputed_poc = INT_MIN;
2157 h->prev_interlaced_frame = 1;
2159 h->prev_frame_num = -1;
2160 if (h->s.current_picture_ptr)
2161 h->s.current_picture_ptr->f.reference = 0;
2162 h->s.first_field = 0;
2163 memset(h->ref_list[0], 0, sizeof(h->ref_list[0]));
2164 memset(h->ref_list[1], 0, sizeof(h->ref_list[1]));
2165 memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0]));
2166 memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1]));
2167 ff_h264_reset_sei(h);
2168 h->recovery_frame= -1;
2171 h->current_slice = 0;
2174 /* forget old pics after a seek */
2175 static void flush_dpb(AVCodecContext *avctx)
2177 H264Context *h = avctx->priv_data;
2180 for (i = 0; i <= MAX_DELAYED_PIC_COUNT; i++) {
2181 if (h->delayed_pic[i])
2182 h->delayed_pic[i]->f.reference = 0;
2183 h->delayed_pic[i] = NULL;
2187 ff_mpeg_flush(avctx);
2190 static int init_poc(H264Context *h)
2192 MpegEncContext *const s = &h->s;
2193 const int max_frame_num = 1 << h->sps.log2_max_frame_num;
2195 Picture *cur = s->current_picture_ptr;
2197 h->frame_num_offset = h->prev_frame_num_offset;
2198 if (h->frame_num < h->prev_frame_num)
2199 h->frame_num_offset += max_frame_num;
2201 if (h->sps.poc_type == 0) {
2202 const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb;
2204 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2)
2205 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
2206 else if (h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2)
2207 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2209 h->poc_msb = h->prev_poc_msb;
2211 field_poc[1] = h->poc_msb + h->poc_lsb;
2212 if (s->picture_structure == PICT_FRAME)
2213 field_poc[1] += h->delta_poc_bottom;
2214 } else if (h->sps.poc_type == 1) {
2215 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2218 if (h->sps.poc_cycle_length != 0)
2219 abs_frame_num = h->frame_num_offset + h->frame_num;
2223 if (h->nal_ref_idc == 0 && abs_frame_num > 0)
2226 expected_delta_per_poc_cycle = 0;
2227 for (i = 0; i < h->sps.poc_cycle_length; i++)
2228 // FIXME integrate during sps parse
2229 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i];
2231 if (abs_frame_num > 0) {
2232 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2233 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2235 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
2236 for (i = 0; i <= frame_num_in_poc_cycle; i++)
2237 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i];
2241 if (h->nal_ref_idc == 0)
2242 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
2244 field_poc[0] = expectedpoc + h->delta_poc[0];
2245 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2247 if (s->picture_structure == PICT_FRAME)
2248 field_poc[1] += h->delta_poc[1];
2250 int poc = 2 * (h->frame_num_offset + h->frame_num);
2252 if (!h->nal_ref_idc)
2259 if (s->picture_structure != PICT_BOTTOM_FIELD)
2260 s->current_picture_ptr->field_poc[0] = field_poc[0];
2261 if (s->picture_structure != PICT_TOP_FIELD)
2262 s->current_picture_ptr->field_poc[1] = field_poc[1];
2263 cur->poc = FFMIN(cur->field_poc[0], cur->field_poc[1]);
2269 * initialize scan tables
2271 static void init_scan_tables(H264Context *h)
2274 for (i = 0; i < 16; i++) {
2275 #define T(x) (x >> 2) | ((x << 2) & 0xF)
2276 h->zigzag_scan[i] = T(zigzag_scan[i]);
2277 h->field_scan[i] = T(field_scan[i]);
2280 for (i = 0; i < 64; i++) {
2281 #define T(x) (x >> 3) | ((x & 7) << 3)
2282 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
2283 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
2284 h->field_scan8x8[i] = T(field_scan8x8[i]);
2285 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
2288 if (h->sps.transform_bypass) { // FIXME same ugly
2289 memcpy(h->zigzag_scan_q0 , zigzag_scan , sizeof(h->zigzag_scan_q0 ));
2290 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
2291 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
2292 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
2293 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
2294 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
2296 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
2297 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
2298 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
2299 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
2300 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
2301 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
2305 static int field_end(H264Context *h, int in_setup)
2307 MpegEncContext *const s = &h->s;
2308 AVCodecContext *const avctx = s->avctx;
2312 if (!in_setup && !s->droppable)
2313 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
2314 s->picture_structure == PICT_BOTTOM_FIELD);
2316 if (CONFIG_H264_VDPAU_DECODER &&
2317 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2318 ff_vdpau_h264_set_reference_frames(s);
2320 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
2321 if (!s->droppable) {
2322 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2323 h->prev_poc_msb = h->poc_msb;
2324 h->prev_poc_lsb = h->poc_lsb;
2326 h->prev_frame_num_offset = h->frame_num_offset;
2327 h->prev_frame_num = h->frame_num;
2328 h->outputed_poc = h->next_outputed_poc;
2331 if (avctx->hwaccel) {
2332 if (avctx->hwaccel->end_frame(avctx) < 0)
2333 av_log(avctx, AV_LOG_ERROR,
2334 "hardware accelerator failed to decode picture\n");
2337 if (CONFIG_H264_VDPAU_DECODER &&
2338 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2339 ff_vdpau_h264_picture_complete(s);
2342 * FIXME: Error handling code does not seem to support interlaced
2343 * when slices span multiple rows
2344 * The ff_er_add_slice calls don't work right for bottom
2345 * fields; they cause massive erroneous error concealing
2346 * Error marking covers both fields (top and bottom).
2347 * This causes a mismatched s->error_count
2348 * and a bad error table. Further, the error count goes to
2349 * INT_MAX when called for bottom field, because mb_y is
2350 * past end by one (callers fault) and resync_mb_y != 0
2351 * causes problems for the first MB line, too.
2356 ff_MPV_frame_end(s);
2358 h->current_slice = 0;
2364 * Replicate H264 "master" context to thread contexts.
2366 static int clone_slice(H264Context *dst, H264Context *src)
2370 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
2371 dst->s.current_picture_ptr = src->s.current_picture_ptr;
2372 dst->s.current_picture = src->s.current_picture;
2373 dst->s.linesize = src->s.linesize;
2374 dst->s.uvlinesize = src->s.uvlinesize;
2375 dst->s.first_field = src->s.first_field;
2377 if (!dst->s.edge_emu_buffer &&
2378 (ret = ff_mpv_frame_size_alloc(&dst->s, dst->s.linesize))) {
2379 av_log(dst->s.avctx, AV_LOG_ERROR,
2380 "Failed to allocate scratch buffers\n");
2384 dst->prev_poc_msb = src->prev_poc_msb;
2385 dst->prev_poc_lsb = src->prev_poc_lsb;
2386 dst->prev_frame_num_offset = src->prev_frame_num_offset;
2387 dst->prev_frame_num = src->prev_frame_num;
2388 dst->short_ref_count = src->short_ref_count;
2390 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
2391 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
2392 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
2393 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
2395 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
2396 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
2402 * Compute profile from profile_idc and constraint_set?_flags.
2406 * @return profile as defined by FF_PROFILE_H264_*
2408 int ff_h264_get_profile(SPS *sps)
2410 int profile = sps->profile_idc;
2412 switch (sps->profile_idc) {
2413 case FF_PROFILE_H264_BASELINE:
2414 // constraint_set1_flag set to 1
2415 profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0;
2417 case FF_PROFILE_H264_HIGH_10:
2418 case FF_PROFILE_H264_HIGH_422:
2419 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
2420 // constraint_set3_flag set to 1
2421 profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0;
2428 static int h264_set_parameter_from_sps(H264Context *h)
2430 MpegEncContext *s = &h->s;
2432 if (s->flags & CODEC_FLAG_LOW_DELAY ||
2433 (h->sps.bitstream_restriction_flag &&
2434 !h->sps.num_reorder_frames)) {
2435 if (s->avctx->has_b_frames > 1 || h->delayed_pic[0])
2436 av_log(h->s.avctx, AV_LOG_WARNING, "Delayed frames seen. "
2437 "Reenabling low delay requires a codec flush.\n");
2442 if (s->avctx->has_b_frames < 2)
2443 s->avctx->has_b_frames = !s->low_delay;
2445 if (s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
2446 h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
2447 if (s->avctx->codec &&
2448 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU &&
2449 (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) {
2450 av_log(s->avctx, AV_LOG_ERROR,
2451 "VDPAU decoding does not support video colorspace.\n");
2452 return AVERROR_INVALIDDATA;
2454 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 14 &&
2455 h->sps.bit_depth_luma != 11 && h->sps.bit_depth_luma != 13 &&
2456 (h->sps.bit_depth_luma != 9 || !CHROMA422)) {
2457 s->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
2458 h->cur_chroma_format_idc = h->sps.chroma_format_idc;
2459 h->pixel_shift = h->sps.bit_depth_luma > 8;
2461 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma,
2462 h->sps.chroma_format_idc);
2463 ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma,
2464 h->sps.chroma_format_idc);
2465 s->dsp.dct_bits = h->sps.bit_depth_luma > 8 ? 32 : 16;
2466 ff_dsputil_init(&s->dsp, s->avctx);
2467 ff_videodsp_init(&s->vdsp, h->sps.bit_depth_luma);
2469 av_log(s->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
2470 h->sps.bit_depth_luma);
2471 return AVERROR_INVALIDDATA;
2477 static enum PixelFormat get_pixel_format(H264Context *h)
2479 MpegEncContext *const s = &h->s;
2480 switch (h->sps.bit_depth_luma) {
2483 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2484 return AV_PIX_FMT_GBRP9;
2486 return AV_PIX_FMT_YUV444P9;
2487 } else if (CHROMA422)
2488 return AV_PIX_FMT_YUV422P9;
2490 return AV_PIX_FMT_YUV420P9;
2494 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2495 return AV_PIX_FMT_GBRP10;
2497 return AV_PIX_FMT_YUV444P10;
2498 } else if (CHROMA422)
2499 return AV_PIX_FMT_YUV422P10;
2501 return AV_PIX_FMT_YUV420P10;
2505 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2506 return AV_PIX_FMT_GBRP12;
2508 return AV_PIX_FMT_YUV444P12;
2509 } else if (CHROMA422)
2510 return AV_PIX_FMT_YUV422P12;
2512 return AV_PIX_FMT_YUV420P12;
2516 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2517 return AV_PIX_FMT_GBRP14;
2519 return AV_PIX_FMT_YUV444P14;
2520 } else if (CHROMA422)
2521 return AV_PIX_FMT_YUV422P14;
2523 return AV_PIX_FMT_YUV420P14;
2527 if (s->avctx->colorspace == AVCOL_SPC_RGB) {
2528 av_log(h->s.avctx, AV_LOG_DEBUG, "Detected GBR colorspace.\n");
2529 return AV_PIX_FMT_GBR24P;
2530 } else if (s->avctx->colorspace == AVCOL_SPC_YCGCO) {
2531 av_log(h->s.avctx, AV_LOG_WARNING, "Detected unsupported YCgCo colorspace.\n");
2533 return s->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ444P
2534 : AV_PIX_FMT_YUV444P;
2535 } else if (CHROMA422) {
2536 return s->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ422P
2537 : AV_PIX_FMT_YUV422P;
2539 return s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts ?
2540 s->avctx->codec->pix_fmts :
2541 s->avctx->color_range == AVCOL_RANGE_JPEG ?
2542 hwaccel_pixfmt_list_h264_jpeg_420 :
2543 ff_hwaccel_pixfmt_list_420);
2547 av_log(s->avctx, AV_LOG_ERROR,
2548 "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
2549 return AVERROR_INVALIDDATA;
2553 static int h264_slice_header_init(H264Context *h, int reinit)
2555 MpegEncContext *const s = &h->s;
2558 if( FFALIGN(s->avctx->width , 16 ) == s->width
2559 && FFALIGN(s->avctx->height, 16*(2 - h->sps.frame_mbs_only_flag)) == s->height
2560 && !h->sps.crop_right && !h->sps.crop_bottom
2561 && (s->avctx->width != s->width || s->avctx->height && s->height)
2563 av_log(h->s.avctx, AV_LOG_DEBUG, "Using externally provided dimensions\n");
2564 s->avctx->coded_width = s->width;
2565 s->avctx->coded_height = s->height;
2567 avcodec_set_dimensions(s->avctx, s->width, s->height);
2568 s->avctx->width -= (2>>CHROMA444)*FFMIN(h->sps.crop_right, (8<<CHROMA444)-1);
2569 s->avctx->height -= (1<<s->chroma_y_shift)*FFMIN(h->sps.crop_bottom, (16>>s->chroma_y_shift)-1) * (2 - h->sps.frame_mbs_only_flag);
2572 s->avctx->sample_aspect_ratio = h->sps.sar;
2573 av_assert0(s->avctx->sample_aspect_ratio.den);
2575 if (h->sps.timing_info_present_flag) {
2576 int64_t den = h->sps.time_scale;
2577 if (h->x264_build < 44U)
2579 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
2580 h->sps.num_units_in_tick, den, 1 << 30);
2583 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
2587 if ((ret = ff_MPV_common_frame_size_change(s)) < 0) {
2588 av_log(h->s.avctx, AV_LOG_ERROR, "ff_MPV_common_frame_size_change() failed.\n");
2592 if ((ret = ff_MPV_common_init(s) < 0)) {
2593 av_log(h->s.avctx, AV_LOG_ERROR, "ff_MPV_common_init() failed.\n");
2598 h->prev_interlaced_frame = 1;
2600 init_scan_tables(h);
2601 if (ff_h264_alloc_tables(h) < 0) {
2602 av_log(h->s.avctx, AV_LOG_ERROR,
2603 "Could not allocate memory for h264\n");
2604 return AVERROR(ENOMEM);
2607 if (!HAVE_THREADS || !(s->avctx->active_thread_type & FF_THREAD_SLICE)) {
2608 if (context_init(h) < 0) {
2609 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2613 for (i = 1; i < s->slice_context_count; i++) {
2615 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
2616 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
2617 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
2618 c->h264dsp = h->h264dsp;
2621 c->pixel_shift = h->pixel_shift;
2622 c->cur_chroma_format_idc = h->cur_chroma_format_idc;
2623 init_scan_tables(c);
2624 clone_tables(c, h, i);
2627 for (i = 0; i < s->slice_context_count; i++)
2628 if (context_init(h->thread_context[i]) < 0) {
2629 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2638 * Decode a slice header.
2639 * This will also call ff_MPV_common_init() and frame_start() as needed.
2641 * @param h h264context
2642 * @param h0 h264 master context (differs from 'h' when doing sliced based
2643 * parallel decoding)
2645 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
2647 static int decode_slice_header(H264Context *h, H264Context *h0)
2649 MpegEncContext *const s = &h->s;
2650 MpegEncContext *const s0 = &h0->s;
2651 unsigned int first_mb_in_slice;
2652 unsigned int pps_id;
2653 int num_ref_idx_active_override_flag, ret;
2654 unsigned int slice_type, tmp, i, j;
2655 int default_ref_list_done = 0;
2656 int last_pic_structure, last_pic_droppable;
2658 int needs_reinit = 0;
2659 enum AVPixelFormat pix_fmt;
2661 /* FIXME: 2tap qpel isn't implemented for high bit depth. */
2662 if ((s->avctx->flags2 & CODEC_FLAG2_FAST) &&
2663 !h->nal_ref_idc && !h->pixel_shift) {
2664 s->me.qpel_put = s->dsp.put_2tap_qpel_pixels_tab;
2665 s->me.qpel_avg = s->dsp.avg_2tap_qpel_pixels_tab;
2667 s->me.qpel_put = s->dsp.put_h264_qpel_pixels_tab;
2668 s->me.qpel_avg = s->dsp.avg_h264_qpel_pixels_tab;
2671 first_mb_in_slice = get_ue_golomb_long(&s->gb);
2673 if (first_mb_in_slice == 0) { // FIXME better field boundary detection
2674 if (h0->current_slice && FIELD_PICTURE) {
2678 h0->current_slice = 0;
2679 if (!s0->first_field) {
2680 if (s->current_picture_ptr && !s->droppable &&
2681 s->current_picture_ptr->owner2 == s) {
2682 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
2683 s->picture_structure == PICT_BOTTOM_FIELD);
2685 s->current_picture_ptr = NULL;
2689 slice_type = get_ue_golomb_31(&s->gb);
2690 if (slice_type > 9) {
2691 av_log(h->s.avctx, AV_LOG_ERROR,
2692 "slice type too large (%d) at %d %d\n",
2693 slice_type, s->mb_x, s->mb_y);
2696 if (slice_type > 4) {
2698 h->slice_type_fixed = 1;
2700 h->slice_type_fixed = 0;
2702 slice_type = golomb_to_pict_type[slice_type];
2703 if (slice_type == AV_PICTURE_TYPE_I ||
2704 (h0->current_slice != 0 && slice_type == h0->last_slice_type)) {
2705 default_ref_list_done = 1;
2707 h->slice_type = slice_type;
2708 h->slice_type_nos = slice_type & 3;
2710 // to make a few old functions happy, it's wrong though
2711 s->pict_type = h->slice_type;
2713 pps_id = get_ue_golomb(&s->gb);
2714 if (pps_id >= MAX_PPS_COUNT) {
2715 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id %d out of range\n", pps_id);
2718 if (!h0->pps_buffers[pps_id]) {
2719 av_log(h->s.avctx, AV_LOG_ERROR,
2720 "non-existing PPS %u referenced\n",
2724 h->pps = *h0->pps_buffers[pps_id];
2726 if (!h0->sps_buffers[h->pps.sps_id]) {
2727 av_log(h->s.avctx, AV_LOG_ERROR,
2728 "non-existing SPS %u referenced\n",
2733 if (h->pps.sps_id != h->current_sps_id ||
2734 h->context_reinitialized ||
2735 h0->sps_buffers[h->pps.sps_id]->new) {
2736 h0->sps_buffers[h->pps.sps_id]->new = 0;
2738 h->current_sps_id = h->pps.sps_id;
2739 h->sps = *h0->sps_buffers[h->pps.sps_id];
2741 if (s->mb_width != h->sps.mb_width ||
2742 s->mb_height != h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) ||
2743 s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
2744 h->cur_chroma_format_idc != h->sps.chroma_format_idc
2748 if ((ret = h264_set_parameter_from_sps(h)) < 0)
2752 s->avctx->profile = ff_h264_get_profile(&h->sps);
2753 s->avctx->level = h->sps.level_idc;
2754 s->avctx->refs = h->sps.ref_frame_count;
2756 must_reinit = (s->context_initialized &&
2757 ( 16*h->sps.mb_width != s->avctx->coded_width
2758 || 16*h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) != s->avctx->coded_height
2759 || s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma
2760 || h->cur_chroma_format_idc != h->sps.chroma_format_idc
2761 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio)));
2764 s->mb_width = h->sps.mb_width;
2765 s->mb_height = h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
2767 h->b_stride = s->mb_width * 4;
2769 s->chroma_y_shift = h->sps.chroma_format_idc <= 1; // 400 uses yuv420p
2771 s->width = 16 * s->mb_width;
2772 s->height = 16 * s->mb_height;
2774 if (h->sps.video_signal_type_present_flag) {
2775 s->avctx->color_range = h->sps.full_range>0 ? AVCOL_RANGE_JPEG
2777 if (h->sps.colour_description_present_flag) {
2778 s->avctx->color_primaries = h->sps.color_primaries;
2779 s->avctx->color_trc = h->sps.color_trc;
2780 s->avctx->colorspace = h->sps.colorspace;
2785 ret = get_pixel_format(h);
2790 if (s->avctx->pix_fmt == PIX_FMT_NONE)
2791 s->avctx->pix_fmt = pix_fmt;
2793 if (s->context_initialized &&
2799 av_log(s->avctx, AV_LOG_ERROR, "changing width/height on "
2800 "slice %d\n", h0->current_slice + 1);
2801 return AVERROR_INVALIDDATA;
2804 av_log(h->s.avctx, AV_LOG_INFO, "Reinit context to %dx%d, "
2805 "pix_fmt: %d\n", s->width, s->height, pix_fmt);
2809 s->avctx->pix_fmt = pix_fmt;
2811 if ((ret = h264_slice_header_init(h, 1)) < 0) {
2812 av_log(h->s.avctx, AV_LOG_ERROR,
2813 "h264_slice_header_init() failed\n");
2816 h->context_reinitialized = 1;
2818 if (!s->context_initialized) {
2820 av_log(h->s.avctx, AV_LOG_ERROR,
2821 "Cannot (re-)initialize context during parallel decoding.\n");
2824 if ((ret = h264_slice_header_init(h, 0)) < 0) {
2825 av_log(h->s.avctx, AV_LOG_ERROR,
2826 "h264_slice_header_init() failed\n");
2831 if (h == h0 && h->dequant_coeff_pps != pps_id) {
2832 h->dequant_coeff_pps = pps_id;
2833 init_dequant_tables(h);
2836 h->frame_num = get_bits(&s->gb, h->sps.log2_max_frame_num);
2839 h->mb_aff_frame = 0;
2840 last_pic_structure = s0->picture_structure;
2841 last_pic_droppable = s0->droppable;
2842 s->droppable = h->nal_ref_idc == 0;
2843 if (h->sps.frame_mbs_only_flag) {
2844 s->picture_structure = PICT_FRAME;
2846 if (!h->sps.direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
2847 av_log(h->s.avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
2850 if (get_bits1(&s->gb)) { // field_pic_flag
2851 s->picture_structure = PICT_TOP_FIELD + get_bits1(&s->gb); // bottom_field_flag
2853 s->picture_structure = PICT_FRAME;
2854 h->mb_aff_frame = h->sps.mb_aff;
2857 h->mb_field_decoding_flag = s->picture_structure != PICT_FRAME;
2859 if (h0->current_slice != 0) {
2860 if (last_pic_structure != s->picture_structure ||
2861 last_pic_droppable != s->droppable) {
2862 av_log(h->s.avctx, AV_LOG_ERROR,
2863 "Changing field mode (%d -> %d) between slices is not allowed\n",
2864 last_pic_structure, s->picture_structure);
2865 s->picture_structure = last_pic_structure;
2866 s->droppable = last_pic_droppable;
2867 return AVERROR_INVALIDDATA;
2868 } else if (!s0->current_picture_ptr) {
2869 av_log(s->avctx, AV_LOG_ERROR,
2870 "unset current_picture_ptr on %d. slice\n",
2871 h0->current_slice + 1);
2872 return AVERROR_INVALIDDATA;
2875 /* Shorten frame num gaps so we don't have to allocate reference
2876 * frames just to throw them away */
2877 if (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0) {
2878 int unwrap_prev_frame_num = h->prev_frame_num;
2879 int max_frame_num = 1 << h->sps.log2_max_frame_num;
2881 if (unwrap_prev_frame_num > h->frame_num)
2882 unwrap_prev_frame_num -= max_frame_num;
2884 if ((h->frame_num - unwrap_prev_frame_num) > h->sps.ref_frame_count) {
2885 unwrap_prev_frame_num = (h->frame_num - h->sps.ref_frame_count) - 1;
2886 if (unwrap_prev_frame_num < 0)
2887 unwrap_prev_frame_num += max_frame_num;
2889 h->prev_frame_num = unwrap_prev_frame_num;
2893 /* See if we have a decoded first field looking for a pair...
2894 * Here, we're using that to see if we should mark previously
2895 * decode frames as "finished".
2896 * We have to do that before the "dummy" in-between frame allocation,
2897 * since that can modify s->current_picture_ptr. */
2898 if (s0->first_field) {
2899 assert(s0->current_picture_ptr);
2900 assert(s0->current_picture_ptr->f.data[0]);
2901 assert(s0->current_picture_ptr->f.reference != DELAYED_PIC_REF);
2903 /* Mark old field/frame as completed */
2904 if (!last_pic_droppable && s0->current_picture_ptr->owner2 == s0) {
2905 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2906 last_pic_structure == PICT_BOTTOM_FIELD);
2909 /* figure out if we have a complementary field pair */
2910 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2911 /* Previous field is unmatched. Don't display it, but let it
2912 * remain for reference if marked as such. */
2913 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
2914 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2915 last_pic_structure == PICT_TOP_FIELD);
2918 if (s0->current_picture_ptr->frame_num != h->frame_num) {
2919 /* This and previous field were reference, but had
2920 * different frame_nums. Consider this field first in
2921 * pair. Throw away previous field except for reference
2923 if (!last_pic_droppable && last_pic_structure != PICT_FRAME) {
2924 ff_thread_report_progress(&s0->current_picture_ptr->f, INT_MAX,
2925 last_pic_structure == PICT_TOP_FIELD);
2928 /* Second field in complementary pair */
2929 if (!((last_pic_structure == PICT_TOP_FIELD &&
2930 s->picture_structure == PICT_BOTTOM_FIELD) ||
2931 (last_pic_structure == PICT_BOTTOM_FIELD &&
2932 s->picture_structure == PICT_TOP_FIELD))) {
2933 av_log(s->avctx, AV_LOG_ERROR,
2934 "Invalid field mode combination %d/%d\n",
2935 last_pic_structure, s->picture_structure);
2936 s->picture_structure = last_pic_structure;
2937 s->droppable = last_pic_droppable;
2938 return AVERROR_INVALIDDATA;
2939 } else if (last_pic_droppable != s->droppable) {
2940 av_log(s->avctx, AV_LOG_ERROR,
2941 "Cannot combine reference and non-reference fields in the same frame\n");
2942 av_log_ask_for_sample(s->avctx, NULL);
2943 s->picture_structure = last_pic_structure;
2944 s->droppable = last_pic_droppable;
2945 return AVERROR_INVALIDDATA;
2948 /* Take ownership of this buffer. Note that if another thread owned
2949 * the first field of this buffer, we're not operating on that pointer,
2950 * so the original thread is still responsible for reporting progress
2951 * on that first field (or if that was us, we just did that above).
2952 * By taking ownership, we assign responsibility to ourselves to
2953 * report progress on the second field. */
2954 s0->current_picture_ptr->owner2 = s0;
2959 while (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0 && !s0->first_field &&
2960 h->frame_num != (h->prev_frame_num + 1) % (1 << h->sps.log2_max_frame_num)) {
2961 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
2962 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
2963 h->frame_num, h->prev_frame_num);
2964 if (ff_h264_frame_start(h) < 0)
2966 h->prev_frame_num++;
2967 h->prev_frame_num %= 1 << h->sps.log2_max_frame_num;
2968 s->current_picture_ptr->frame_num = h->prev_frame_num;
2969 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX, 0);
2970 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX, 1);
2971 ff_generate_sliding_window_mmcos(h);
2972 if (ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index) < 0 &&
2973 (s->avctx->err_recognition & AV_EF_EXPLODE))
2974 return AVERROR_INVALIDDATA;
2975 /* Error concealment: if a ref is missing, copy the previous ref in its place.
2976 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
2977 * about there being no actual duplicates.
2978 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
2979 * concealing a lost frame, this probably isn't noticeable by comparison, but it should
2981 if (h->short_ref_count) {
2983 av_image_copy(h->short_ref[0]->f.data, h->short_ref[0]->f.linesize,
2984 (const uint8_t **)prev->f.data, prev->f.linesize,
2985 s->avctx->pix_fmt, s->mb_width * 16, s->mb_height * 16);
2986 h->short_ref[0]->poc = prev->poc + 2;
2988 h->short_ref[0]->frame_num = h->prev_frame_num;
2992 /* See if we have a decoded first field looking for a pair...
2993 * We're using that to see whether to continue decoding in that
2994 * frame, or to allocate a new one. */
2995 if (s0->first_field) {
2996 assert(s0->current_picture_ptr);
2997 assert(s0->current_picture_ptr->f.data[0]);
2998 assert(s0->current_picture_ptr->f.reference != DELAYED_PIC_REF);
3000 /* figure out if we have a complementary field pair */
3001 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3002 /* Previous field is unmatched. Don't display it, but let it
3003 * remain for reference if marked as such. */
3004 s0->current_picture_ptr = NULL;
3005 s0->first_field = FIELD_PICTURE;
3007 if (s0->current_picture_ptr->frame_num != h->frame_num) {
3008 ff_thread_report_progress((AVFrame*)s0->current_picture_ptr, INT_MAX,
3009 s0->picture_structure==PICT_BOTTOM_FIELD);
3010 /* This and the previous field had different frame_nums.
3011 * Consider this field first in pair. Throw away previous
3012 * one except for reference purposes. */
3013 s0->first_field = 1;
3014 s0->current_picture_ptr = NULL;
3016 /* Second field in complementary pair */
3017 s0->first_field = 0;
3021 /* Frame or first field in a potentially complementary pair */
3022 s0->first_field = FIELD_PICTURE;
3025 if (!FIELD_PICTURE || s0->first_field) {
3026 if (ff_h264_frame_start(h) < 0) {
3027 s0->first_field = 0;
3031 ff_release_unused_pictures(s, 0);
3034 if (h != h0 && (ret = clone_slice(h, h0)) < 0)
3037 s->current_picture_ptr->frame_num = h->frame_num; // FIXME frame_num cleanup
3039 av_assert1(s->mb_num == s->mb_width * s->mb_height);
3040 if (first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3041 first_mb_in_slice >= s->mb_num) {
3042 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3045 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3046 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3047 if (s->picture_structure == PICT_BOTTOM_FIELD)
3048 s->resync_mb_y = s->mb_y = s->mb_y + 1;
3049 av_assert1(s->mb_y < s->mb_height);
3051 if (s->picture_structure == PICT_FRAME) {
3052 h->curr_pic_num = h->frame_num;
3053 h->max_pic_num = 1 << h->sps.log2_max_frame_num;
3055 h->curr_pic_num = 2 * h->frame_num + 1;
3056 h->max_pic_num = 1 << (h->sps.log2_max_frame_num + 1);
3059 if (h->nal_unit_type == NAL_IDR_SLICE)
3060 get_ue_golomb(&s->gb); /* idr_pic_id */
3062 if (h->sps.poc_type == 0) {
3063 h->poc_lsb = get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3065 if (h->pps.pic_order_present == 1 && s->picture_structure == PICT_FRAME)
3066 h->delta_poc_bottom = get_se_golomb(&s->gb);
3069 if (h->sps.poc_type == 1 && !h->sps.delta_pic_order_always_zero_flag) {
3070 h->delta_poc[0] = get_se_golomb(&s->gb);
3072 if (h->pps.pic_order_present == 1 && s->picture_structure == PICT_FRAME)
3073 h->delta_poc[1] = get_se_golomb(&s->gb);
3078 if (h->pps.redundant_pic_cnt_present)
3079 h->redundant_pic_count = get_ue_golomb(&s->gb);
3081 // set defaults, might be overridden a few lines later
3082 h->ref_count[0] = h->pps.ref_count[0];
3083 h->ref_count[1] = h->pps.ref_count[1];
3085 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3087 max[0] = max[1] = s->picture_structure == PICT_FRAME ? 15 : 31;
3089 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3090 h->direct_spatial_mv_pred = get_bits1(&s->gb);
3091 num_ref_idx_active_override_flag = get_bits1(&s->gb);
3093 if (num_ref_idx_active_override_flag) {
3094 h->ref_count[0] = get_ue_golomb(&s->gb) + 1;
3095 if (h->slice_type_nos == AV_PICTURE_TYPE_B) {
3096 h->ref_count[1] = get_ue_golomb(&s->gb) + 1;
3098 // full range is spec-ok in this case, even for frames
3099 h->ref_count[1] = 1;
3102 if (h->ref_count[0]-1 > max[0] || h->ref_count[1]-1 > max[1]){
3103 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow %u > %u or %u > %u\n", h->ref_count[0]-1, max[0], h->ref_count[1]-1, max[1]);
3104 h->ref_count[0] = h->ref_count[1] = 1;
3105 return AVERROR_INVALIDDATA;
3108 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3113 h->ref_count[1]= h->ref_count[0]= h->list_count= 0;
3115 if (!default_ref_list_done)
3116 ff_h264_fill_default_ref_list(h);
3118 if (h->slice_type_nos != AV_PICTURE_TYPE_I &&
3119 ff_h264_decode_ref_pic_list_reordering(h) < 0) {
3120 h->ref_count[1] = h->ref_count[0] = 0;
3124 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3125 s->last_picture_ptr = &h->ref_list[0][0];
3126 s->last_picture_ptr->owner2 = s;
3127 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
3129 if (h->slice_type_nos == AV_PICTURE_TYPE_B) {
3130 s->next_picture_ptr = &h->ref_list[1][0];
3131 s->next_picture_ptr->owner2 = s;
3132 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
3135 if ((h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P) ||
3136 (h->pps.weighted_bipred_idc == 1 &&
3137 h->slice_type_nos == AV_PICTURE_TYPE_B))
3138 pred_weight_table(h);
3139 else if (h->pps.weighted_bipred_idc == 2 &&
3140 h->slice_type_nos == AV_PICTURE_TYPE_B) {
3141 implicit_weight_table(h, -1);
3144 for (i = 0; i < 2; i++) {
3145 h->luma_weight_flag[i] = 0;
3146 h->chroma_weight_flag[i] = 0;
3150 if (h->nal_ref_idc && ff_h264_decode_ref_pic_marking(h0, &s->gb) < 0 &&
3151 (s->avctx->err_recognition & AV_EF_EXPLODE))
3152 return AVERROR_INVALIDDATA;
3155 ff_h264_fill_mbaff_ref_list(h);
3157 if (h->pps.weighted_bipred_idc == 2 && h->slice_type_nos == AV_PICTURE_TYPE_B) {
3158 implicit_weight_table(h, 0);
3159 implicit_weight_table(h, 1);
3163 if (h->slice_type_nos == AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred)
3164 ff_h264_direct_dist_scale_factor(h);
3165 ff_h264_direct_ref_list_init(h);
3167 if (h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac) {
3168 tmp = get_ue_golomb_31(&s->gb);
3170 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3173 h->cabac_init_idc = tmp;
3176 h->last_qscale_diff = 0;
3177 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
3178 if (tmp > 51 + 6 * (h->sps.bit_depth_luma - 8)) {
3179 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3183 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3184 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3185 // FIXME qscale / qp ... stuff
3186 if (h->slice_type == AV_PICTURE_TYPE_SP)
3187 get_bits1(&s->gb); /* sp_for_switch_flag */
3188 if (h->slice_type == AV_PICTURE_TYPE_SP ||
3189 h->slice_type == AV_PICTURE_TYPE_SI)
3190 get_se_golomb(&s->gb); /* slice_qs_delta */
3192 h->deblocking_filter = 1;
3193 h->slice_alpha_c0_offset = 52;
3194 h->slice_beta_offset = 52;
3195 if (h->pps.deblocking_filter_parameters_present) {
3196 tmp = get_ue_golomb_31(&s->gb);
3198 av_log(s->avctx, AV_LOG_ERROR,
3199 "deblocking_filter_idc %u out of range\n", tmp);
3202 h->deblocking_filter = tmp;
3203 if (h->deblocking_filter < 2)
3204 h->deblocking_filter ^= 1; // 1<->0
3206 if (h->deblocking_filter) {
3207 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
3208 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
3209 if (h->slice_alpha_c0_offset > 104U ||
3210 h->slice_beta_offset > 104U) {
3211 av_log(s->avctx, AV_LOG_ERROR,
3212 "deblocking filter parameters %d %d out of range\n",
3213 h->slice_alpha_c0_offset, h->slice_beta_offset);
3219 if (s->avctx->skip_loop_filter >= AVDISCARD_ALL ||
3220 (s->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
3221 h->slice_type_nos != AV_PICTURE_TYPE_I) ||
3222 (s->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
3223 h->slice_type_nos == AV_PICTURE_TYPE_B) ||
3224 (s->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
3225 h->nal_ref_idc == 0))
3226 h->deblocking_filter = 0;
3228 if (h->deblocking_filter == 1 && h0->max_contexts > 1) {
3229 if (s->avctx->flags2 & CODEC_FLAG2_FAST) {
3230 /* Cheat slightly for speed:
3231 * Do not bother to deblock across slices. */
3232 h->deblocking_filter = 2;
3234 h0->max_contexts = 1;
3235 if (!h0->single_decode_warning) {
3236 av_log(s->avctx, AV_LOG_INFO,
3237 "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
3238 h0->single_decode_warning = 1;
3241 av_log(h->s.avctx, AV_LOG_ERROR,
3242 "Deblocking switched inside frame.\n");
3247 h->qp_thresh = 15 + 52 -
3248 FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) -
3250 h->pps.chroma_qp_index_offset[0],
3251 h->pps.chroma_qp_index_offset[1]) +
3252 6 * (h->sps.bit_depth_luma - 8);
3254 h0->last_slice_type = slice_type;
3255 h->slice_num = ++h0->current_slice;
3258 h0->slice_row[(h->slice_num-1)&(MAX_SLICES-1)]= s->resync_mb_y;
3259 if ( h0->slice_row[h->slice_num&(MAX_SLICES-1)] + 3 >= s->resync_mb_y
3260 && h0->slice_row[h->slice_num&(MAX_SLICES-1)] <= s->resync_mb_y
3261 && h->slice_num >= MAX_SLICES) {
3262 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
3263 av_log(s->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", h->slice_num, MAX_SLICES);
3266 for (j = 0; j < 2; j++) {
3268 int *ref2frm = h->ref2frm[h->slice_num & (MAX_SLICES - 1)][j];
3269 for (i = 0; i < 16; i++) {
3271 if (h->ref_list[j][i].f.data[0]) {
3273 uint8_t *base = h->ref_list[j][i].f.base[0];
3274 for (k = 0; k < h->short_ref_count; k++)
3275 if (h->short_ref[k]->f.base[0] == base) {
3279 for (k = 0; k < h->long_ref_count; k++)
3280 if (h->long_ref[k] && h->long_ref[k]->f.base[0] == base) {
3281 id_list[i] = h->short_ref_count + k;
3289 for (i = 0; i < 16; i++)
3290 ref2frm[i + 2] = 4 * id_list[i] +
3291 (h->ref_list[j][i].f.reference & 3);
3293 ref2frm[18 + 1] = -1;
3294 for (i = 16; i < 48; i++)
3295 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
3296 (h->ref_list[j][i].f.reference & 3);
3299 // FIXME: fix draw_edges + PAFF + frame threads
3300 h->emu_edge_width = (s->flags & CODEC_FLAG_EMU_EDGE ||
3301 (!h->sps.frame_mbs_only_flag &&
3302 s->avctx->active_thread_type))
3304 h->emu_edge_height = (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
3306 if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
3307 av_log(h->s.avctx, AV_LOG_DEBUG,
3308 "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",
3310 (s->picture_structure == PICT_FRAME ? "F" : s->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
3312 av_get_picture_type_char(h->slice_type),
3313 h->slice_type_fixed ? " fix" : "",
3314 h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
3315 pps_id, h->frame_num,
3316 s->current_picture_ptr->field_poc[0],
3317 s->current_picture_ptr->field_poc[1],
3318 h->ref_count[0], h->ref_count[1],
3320 h->deblocking_filter,
3321 h->slice_alpha_c0_offset / 2 - 26, h->slice_beta_offset / 2 - 26,
3323 h->use_weight == 1 && h->use_weight_chroma ? "c" : "",
3324 h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
3330 int ff_h264_get_slice_type(const H264Context *h)
3332 switch (h->slice_type) {
3333 case AV_PICTURE_TYPE_P:
3335 case AV_PICTURE_TYPE_B:
3337 case AV_PICTURE_TYPE_I:
3339 case AV_PICTURE_TYPE_SP:
3341 case AV_PICTURE_TYPE_SI:
3348 static av_always_inline void fill_filter_caches_inter(H264Context *h,
3349 MpegEncContext *const s,
3350 int mb_type, int top_xy,
3351 int left_xy[LEFT_MBS],
3353 int left_type[LEFT_MBS],
3354 int mb_xy, int list)
3356 int b_stride = h->b_stride;
3357 int16_t(*mv_dst)[2] = &h->mv_cache[list][scan8[0]];
3358 int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
3359 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
3360 if (USES_LIST(top_type, list)) {
3361 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
3362 const int b8_xy = 4 * top_xy + 2;
3363 int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2));
3364 AV_COPY128(mv_dst - 1 * 8, s->current_picture.f.motion_val[list][b_xy + 0]);
3365 ref_cache[0 - 1 * 8] =
3366 ref_cache[1 - 1 * 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 0]];
3367 ref_cache[2 - 1 * 8] =
3368 ref_cache[3 - 1 * 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 1]];
3370 AV_ZERO128(mv_dst - 1 * 8);
3371 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3374 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
3375 if (USES_LIST(left_type[LTOP], list)) {
3376 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
3377 const int b8_xy = 4 * left_xy[LTOP] + 1;
3378 int (*ref2frm)[64] =(void*)( h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2));
3379 AV_COPY32(mv_dst - 1 + 0, s->current_picture.f.motion_val[list][b_xy + b_stride * 0]);
3380 AV_COPY32(mv_dst - 1 + 8, s->current_picture.f.motion_val[list][b_xy + b_stride * 1]);
3381 AV_COPY32(mv_dst - 1 + 16, s->current_picture.f.motion_val[list][b_xy + b_stride * 2]);
3382 AV_COPY32(mv_dst - 1 + 24, s->current_picture.f.motion_val[list][b_xy + b_stride * 3]);
3384 ref_cache[-1 + 8] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 2 * 0]];
3385 ref_cache[-1 + 16] =
3386 ref_cache[-1 + 24] = ref2frm[list][s->current_picture.f.ref_index[list][b8_xy + 2 * 1]];
3388 AV_ZERO32(mv_dst - 1 + 0);
3389 AV_ZERO32(mv_dst - 1 + 8);
3390 AV_ZERO32(mv_dst - 1 + 16);
3391 AV_ZERO32(mv_dst - 1 + 24);
3394 ref_cache[-1 + 16] =
3395 ref_cache[-1 + 24] = LIST_NOT_USED;
3400 if (!USES_LIST(mb_type, list)) {
3401 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
3402 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3403 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3404 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3405 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
3410 int8_t *ref = &s->current_picture.f.ref_index[list][4 * mb_xy];
3411 int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_num & (MAX_SLICES - 1)][0] + (MB_MBAFF ? 20 : 2));
3412 uint32_t ref01 = (pack16to32(ref2frm[list][ref[0]], ref2frm[list][ref[1]]) & 0x00FF00FF) * 0x0101;
3413 uint32_t ref23 = (pack16to32(ref2frm[list][ref[2]], ref2frm[list][ref[3]]) & 0x00FF00FF) * 0x0101;
3414 AV_WN32A(&ref_cache[0 * 8], ref01);
3415 AV_WN32A(&ref_cache[1 * 8], ref01);
3416 AV_WN32A(&ref_cache[2 * 8], ref23);
3417 AV_WN32A(&ref_cache[3 * 8], ref23);
3421 int16_t(*mv_src)[2] = &s->current_picture.f.motion_val[list][4 * s->mb_x + 4 * s->mb_y * b_stride];
3422 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
3423 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
3424 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
3425 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
3431 * @return non zero if the loop filter can be skipped
3433 static int fill_filter_caches(H264Context *h, int mb_type)
3435 MpegEncContext *const s = &h->s;
3436 const int mb_xy = h->mb_xy;
3437 int top_xy, left_xy[LEFT_MBS];
3438 int top_type, left_type[LEFT_MBS];
3442 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
3444 /* Wow, what a mess, why didn't they simplify the interlacing & intra
3445 * stuff, I can't imagine that these complex rules are worth it. */
3447 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
3449 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.f.mb_type[mb_xy - 1]);
3450 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
3452 if (left_mb_field_flag != curr_mb_field_flag)
3453 left_xy[LTOP] -= s->mb_stride;
3455 if (curr_mb_field_flag)
3456 top_xy += s->mb_stride &
3457 (((s->current_picture.f.mb_type[top_xy] >> 7) & 1) - 1);
3458 if (left_mb_field_flag != curr_mb_field_flag)
3459 left_xy[LBOT] += s->mb_stride;
3463 h->top_mb_xy = top_xy;
3464 h->left_mb_xy[LTOP] = left_xy[LTOP];
3465 h->left_mb_xy[LBOT] = left_xy[LBOT];
3467 /* For sufficiently low qp, filtering wouldn't do anything.
3468 * This is a conservative estimate: could also check beta_offset
3469 * and more accurate chroma_qp. */
3470 int qp_thresh = h->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
3471 int qp = s->current_picture.f.qscale_table[mb_xy];
3472 if (qp <= qp_thresh &&
3473 (left_xy[LTOP] < 0 ||
3474 ((qp + s->current_picture.f.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
3476 ((qp + s->current_picture.f.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
3479 if ((left_xy[LTOP] < 0 ||
3480 ((qp + s->current_picture.f.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
3481 (top_xy < s->mb_stride ||
3482 ((qp + s->current_picture.f.qscale_table[top_xy - s->mb_stride] + 1) >> 1) <= qp_thresh))
3487 top_type = s->current_picture.f.mb_type[top_xy];
3488 left_type[LTOP] = s->current_picture.f.mb_type[left_xy[LTOP]];
3489 left_type[LBOT] = s->current_picture.f.mb_type[left_xy[LBOT]];
3490 if (h->deblocking_filter == 2) {
3491 if (h->slice_table[top_xy] != h->slice_num)
3493 if (h->slice_table[left_xy[LBOT]] != h->slice_num)
3494 left_type[LTOP] = left_type[LBOT] = 0;
3496 if (h->slice_table[top_xy] == 0xFFFF)
3498 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
3499 left_type[LTOP] = left_type[LBOT] = 0;
3501 h->top_type = top_type;
3502 h->left_type[LTOP] = left_type[LTOP];
3503 h->left_type[LBOT] = left_type[LBOT];
3505 if (IS_INTRA(mb_type))
3508 fill_filter_caches_inter(h, s, mb_type, top_xy, left_xy,
3509 top_type, left_type, mb_xy, 0);
3510 if (h->list_count == 2)
3511 fill_filter_caches_inter(h, s, mb_type, top_xy, left_xy,
3512 top_type, left_type, mb_xy, 1);
3514 nnz = h->non_zero_count[mb_xy];
3515 nnz_cache = h->non_zero_count_cache;
3516 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
3517 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
3518 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
3519 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
3520 h->cbp = h->cbp_table[mb_xy];
3523 nnz = h->non_zero_count[top_xy];
3524 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
3527 if (left_type[LTOP]) {
3528 nnz = h->non_zero_count[left_xy[LTOP]];
3529 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
3530 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
3531 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
3532 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
3535 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
3536 * from what the loop filter needs */
3537 if (!CABAC && h->pps.transform_8x8_mode) {
3538 if (IS_8x8DCT(top_type)) {
3539 nnz_cache[4 + 8 * 0] =
3540 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
3541 nnz_cache[6 + 8 * 0] =
3542 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
3544 if (IS_8x8DCT(left_type[LTOP])) {
3545 nnz_cache[3 + 8 * 1] =
3546 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
3548 if (IS_8x8DCT(left_type[LBOT])) {
3549 nnz_cache[3 + 8 * 3] =
3550 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
3553 if (IS_8x8DCT(mb_type)) {
3554 nnz_cache[scan8[0]] =
3555 nnz_cache[scan8[1]] =
3556 nnz_cache[scan8[2]] =
3557 nnz_cache[scan8[3]] = (h->cbp & 0x1000) >> 12;
3559 nnz_cache[scan8[0 + 4]] =
3560 nnz_cache[scan8[1 + 4]] =
3561 nnz_cache[scan8[2 + 4]] =
3562 nnz_cache[scan8[3 + 4]] = (h->cbp & 0x2000) >> 12;
3564 nnz_cache[scan8[0 + 8]] =
3565 nnz_cache[scan8[1 + 8]] =
3566 nnz_cache[scan8[2 + 8]] =
3567 nnz_cache[scan8[3 + 8]] = (h->cbp & 0x4000) >> 12;
3569 nnz_cache[scan8[0 + 12]] =
3570 nnz_cache[scan8[1 + 12]] =
3571 nnz_cache[scan8[2 + 12]] =
3572 nnz_cache[scan8[3 + 12]] = (h->cbp & 0x8000) >> 12;
3579 static void loop_filter(H264Context *h, int start_x, int end_x)
3581 MpegEncContext *const s = &h->s;
3582 uint8_t *dest_y, *dest_cb, *dest_cr;
3583 int linesize, uvlinesize, mb_x, mb_y;
3584 const int end_mb_y = s->mb_y + FRAME_MBAFF;
3585 const int old_slice_type = h->slice_type;
3586 const int pixel_shift = h->pixel_shift;
3587 const int block_h = 16 >> s->chroma_y_shift;
3589 if (h->deblocking_filter) {
3590 for (mb_x = start_x; mb_x < end_x; mb_x++)
3591 for (mb_y = end_mb_y - FRAME_MBAFF; mb_y <= end_mb_y; mb_y++) {
3593 mb_xy = h->mb_xy = mb_x + mb_y * s->mb_stride;
3594 h->slice_num = h->slice_table[mb_xy];
3595 mb_type = s->current_picture.f.mb_type[mb_xy];
3596 h->list_count = h->list_counts[mb_xy];
3600 h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
3604 dest_y = s->current_picture.f.data[0] +
3605 ((mb_x << pixel_shift) + mb_y * s->linesize) * 16;
3606 dest_cb = s->current_picture.f.data[1] +
3607 (mb_x << pixel_shift) * (8 << CHROMA444) +
3608 mb_y * s->uvlinesize * block_h;
3609 dest_cr = s->current_picture.f.data[2] +
3610 (mb_x << pixel_shift) * (8 << CHROMA444) +
3611 mb_y * s->uvlinesize * block_h;
3612 // FIXME simplify above
3615 linesize = h->mb_linesize = s->linesize * 2;
3616 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
3617 if (mb_y & 1) { // FIXME move out of this function?
3618 dest_y -= s->linesize * 15;
3619 dest_cb -= s->uvlinesize * (block_h - 1);
3620 dest_cr -= s->uvlinesize * (block_h - 1);
3623 linesize = h->mb_linesize = s->linesize;
3624 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
3626 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
3628 if (fill_filter_caches(h, mb_type))
3630 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.f.qscale_table[mb_xy]);
3631 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.f.qscale_table[mb_xy]);
3634 ff_h264_filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr,
3635 linesize, uvlinesize);
3637 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb,
3638 dest_cr, linesize, uvlinesize);
3642 h->slice_type = old_slice_type;
3644 s->mb_y = end_mb_y - FRAME_MBAFF;
3645 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3646 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3649 static void predict_field_decoding_flag(H264Context *h)
3651 MpegEncContext *const s = &h->s;
3652 const int mb_xy = s->mb_x + s->mb_y * s->mb_stride;
3653 int mb_type = (h->slice_table[mb_xy - 1] == h->slice_num) ?
3654 s->current_picture.f.mb_type[mb_xy - 1] :
3655 (h->slice_table[mb_xy - s->mb_stride] == h->slice_num) ?
3656 s->current_picture.f.mb_type[mb_xy - s->mb_stride] : 0;
3657 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
3661 * Draw edges and report progress for the last MB row.
3663 static void decode_finish_row(H264Context *h)
3665 MpegEncContext *const s = &h->s;
3666 int top = 16 * (s->mb_y >> FIELD_PICTURE);
3667 int pic_height = 16 * s->mb_height >> FIELD_PICTURE;
3668 int height = 16 << FRAME_MBAFF;
3669 int deblock_border = (16 + 4) << FRAME_MBAFF;
3671 if (h->deblocking_filter) {
3672 if ((top + height) >= pic_height)
3673 height += deblock_border;
3674 top -= deblock_border;
3677 if (top >= pic_height || (top + height) < h->emu_edge_height)
3680 height = FFMIN(height, pic_height - top);
3681 if (top < h->emu_edge_height) {
3682 height = top + height;
3686 ff_draw_horiz_band(s, top, height);
3691 ff_thread_report_progress(&s->current_picture_ptr->f, top + height - 1,
3692 s->picture_structure == PICT_BOTTOM_FIELD);
3695 static int decode_slice(struct AVCodecContext *avctx, void *arg)
3697 H264Context *h = *(void **)arg;
3698 MpegEncContext *const s = &h->s;
3699 const int part_mask = s->partitioned_frame ? (ER_AC_END | ER_AC_ERROR)
3701 int lf_x_start = s->mb_x;
3703 s->mb_skip_run = -1;
3705 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME ||
3706 s->codec_id != AV_CODEC_ID_H264 ||
3707 (CONFIG_GRAY && (s->flags & CODEC_FLAG_GRAY));
3711 align_get_bits(&s->gb);
3714 ff_init_cabac_decoder(&h->cabac,
3715 s->gb.buffer + get_bits_count(&s->gb) / 8,
3716 (get_bits_left(&s->gb) + 7) / 8);
3718 ff_h264_init_cabac_states(h);
3722 int ret = ff_h264_decode_mb_cabac(h);
3724 // STOP_TIMER("decode_mb_cabac")
3727 ff_h264_hl_decode_mb(h);
3729 // FIXME optimal? or let mb_decode decode 16x32 ?
3730 if (ret >= 0 && FRAME_MBAFF) {
3733 ret = ff_h264_decode_mb_cabac(h);
3736 ff_h264_hl_decode_mb(h);
3739 eos = get_cabac_terminate(&h->cabac);
3741 if ((s->workaround_bugs & FF_BUG_TRUNCATED) &&
3742 h->cabac.bytestream > h->cabac.bytestream_end + 2) {
3743 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x - 1,
3744 s->mb_y, ER_MB_END & part_mask);
3745 if (s->mb_x >= lf_x_start)
3746 loop_filter(h, lf_x_start, s->mb_x + 1);
3749 if (h->cabac.bytestream > h->cabac.bytestream_end + 2 )
3750 av_log(h->s.avctx, AV_LOG_DEBUG, "bytestream overread %td\n", h->cabac.bytestream_end - h->cabac.bytestream);
3751 if (ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 4) {
3752 av_log(h->s.avctx, AV_LOG_ERROR,
3753 "error while decoding MB %d %d, bytestream (%td)\n",
3755 h->cabac.bytestream_end - h->cabac.bytestream);
3756 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3757 s->mb_y, ER_MB_ERROR & part_mask);
3761 if (++s->mb_x >= s->mb_width) {
3762 loop_filter(h, lf_x_start, s->mb_x);
3763 s->mb_x = lf_x_start = 0;
3764 decode_finish_row(h);
3766 if (FIELD_OR_MBAFF_PICTURE) {
3768 if (FRAME_MBAFF && s->mb_y < s->mb_height)
3769 predict_field_decoding_flag(h);
3773 if (eos || s->mb_y >= s->mb_height) {
3774 tprintf(s->avctx, "slice end %d %d\n",
3775 get_bits_count(&s->gb), s->gb.size_in_bits);
3776 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x - 1,
3777 s->mb_y, ER_MB_END & part_mask);
3778 if (s->mb_x > lf_x_start)
3779 loop_filter(h, lf_x_start, s->mb_x);
3785 int ret = ff_h264_decode_mb_cavlc(h);
3788 ff_h264_hl_decode_mb(h);
3790 // FIXME optimal? or let mb_decode decode 16x32 ?
3791 if (ret >= 0 && FRAME_MBAFF) {
3793 ret = ff_h264_decode_mb_cavlc(h);
3796 ff_h264_hl_decode_mb(h);
3801 av_log(h->s.avctx, AV_LOG_ERROR,
3802 "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3803 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3804 s->mb_y, ER_MB_ERROR & part_mask);
3808 if (++s->mb_x >= s->mb_width) {
3809 loop_filter(h, lf_x_start, s->mb_x);
3810 s->mb_x = lf_x_start = 0;
3811 decode_finish_row(h);
3813 if (FIELD_OR_MBAFF_PICTURE) {
3815 if (FRAME_MBAFF && s->mb_y < s->mb_height)
3816 predict_field_decoding_flag(h);
3818 if (s->mb_y >= s->mb_height) {
3819 tprintf(s->avctx, "slice end %d %d\n",
3820 get_bits_count(&s->gb), s->gb.size_in_bits);
3822 if ( get_bits_left(&s->gb) == 0
3823 || get_bits_left(&s->gb) > 0 && !(s->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
3824 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3825 s->mb_x - 1, s->mb_y,
3826 ER_MB_END & part_mask);
3830 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3832 ER_MB_END & part_mask);
3839 if (get_bits_left(&s->gb) <= 0 && s->mb_skip_run <= 0) {
3840 tprintf(s->avctx, "slice end %d %d\n",
3841 get_bits_count(&s->gb), s->gb.size_in_bits);
3842 if (get_bits_left(&s->gb) == 0) {
3843 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y,
3844 s->mb_x - 1, s->mb_y,
3845 ER_MB_END & part_mask);
3846 if (s->mb_x > lf_x_start)
3847 loop_filter(h, lf_x_start, s->mb_x);
3851 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x,
3852 s->mb_y, ER_MB_ERROR & part_mask);
3862 * Call decode_slice() for each context.
3864 * @param h h264 master context
3865 * @param context_count number of contexts to execute
3867 static int execute_decode_slices(H264Context *h, int context_count)
3869 MpegEncContext *const s = &h->s;
3870 AVCodecContext *const avctx = s->avctx;
3874 if (s->avctx->hwaccel ||
3875 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
3877 if (context_count == 1) {
3878 return decode_slice(avctx, &h);
3880 for (i = 1; i < context_count; i++) {
3881 hx = h->thread_context[i];
3882 hx->s.err_recognition = avctx->err_recognition;
3883 hx->s.error_count = 0;
3884 hx->x264_build = h->x264_build;
3887 avctx->execute(avctx, decode_slice, h->thread_context,
3888 NULL, context_count, sizeof(void *));
3890 /* pull back stuff from slices to master context */
3891 hx = h->thread_context[context_count - 1];
3892 s->mb_x = hx->s.mb_x;
3893 s->mb_y = hx->s.mb_y;
3894 s->droppable = hx->s.droppable;
3895 s->picture_structure = hx->s.picture_structure;
3896 for (i = 1; i < context_count; i++)
3897 h->s.error_count += h->thread_context[i]->s.error_count;
3903 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
3904 int parse_extradata)
3906 MpegEncContext *const s = &h->s;
3907 AVCodecContext *const avctx = s->avctx;
3908 H264Context *hx; ///< thread context
3912 int pass = !(avctx->active_thread_type & FF_THREAD_FRAME);
3913 int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
3916 int first_slice = 0;
3918 h->nal_unit_type= 0;
3920 if(!s->slice_context_count)
3921 s->slice_context_count= 1;
3922 h->max_contexts = s->slice_context_count;
3923 if (!(s->flags2 & CODEC_FLAG2_CHUNKS)) {
3924 h->current_slice = 0;
3925 if (!s->first_field)
3926 s->current_picture_ptr = NULL;
3927 ff_h264_reset_sei(h);
3930 if (h->nal_length_size == 4) {
3931 if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
3933 }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
3937 for (; pass <= 1; pass++) {
3940 next_avc = h->is_avc ? 0 : buf_size;
3950 if (buf_index >= next_avc) {
3951 if (buf_index >= buf_size - h->nal_length_size)
3954 for (i = 0; i < h->nal_length_size; i++)
3955 nalsize = (nalsize << 8) | buf[buf_index++];
3956 if (nalsize <= 0 || nalsize > buf_size - buf_index) {
3957 av_log(h->s.avctx, AV_LOG_ERROR,
3958 "AVC: nal size %d\n", nalsize);
3961 next_avc = buf_index + nalsize;
3963 // start code prefix search
3964 for (; buf_index + 3 < next_avc; buf_index++)
3965 // This should always succeed in the first iteration.
3966 if (buf[buf_index] == 0 &&
3967 buf[buf_index + 1] == 0 &&
3968 buf[buf_index + 2] == 1)
3971 if (buf_index + 3 >= buf_size) {
3972 buf_index = buf_size;
3977 if (buf_index >= next_avc)
3981 hx = h->thread_context[context_count];
3983 ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length,
3984 &consumed, next_avc - buf_index);
3985 if (ptr == NULL || dst_length < 0) {
3989 i = buf_index + consumed;
3990 if ((s->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc &&
3991 buf[i] == 0x00 && buf[i + 1] == 0x00 &&
3992 buf[i + 2] == 0x01 && buf[i + 3] == 0xE0)
3993 s->workaround_bugs |= FF_BUG_TRUNCATED;
3995 if (!(s->workaround_bugs & FF_BUG_TRUNCATED))
3996 while(dst_length > 0 && ptr[dst_length - 1] == 0)
3998 bit_length = !dst_length ? 0
4000 decode_rbsp_trailing(h, ptr + dst_length - 1));
4002 if (s->avctx->debug & FF_DEBUG_STARTCODE)
4003 av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d/%d at %d/%d length %d pass %d\n", hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length, pass);
4005 if (h->is_avc && (nalsize != consumed) && nalsize)
4006 av_log(h->s.avctx, AV_LOG_DEBUG,
4007 "AVC: Consumed only %d bytes instead of %d\n",
4010 buf_index += consumed;
4014 /* packets can sometimes contain multiple PPS/SPS,
4015 * e.g. two PAFF field pictures in one packet, or a demuxer
4016 * which splits NALs strangely if so, when frame threading we
4017 * can't start the next thread until we've read all of them */
4018 switch (hx->nal_unit_type) {
4021 nals_needed = nal_index;
4026 init_get_bits(&hx->s.gb, ptr, bit_length);
4027 if (!get_ue_golomb(&hx->s.gb) || !first_slice)
4028 nals_needed = nal_index;
4030 first_slice = hx->nal_unit_type;
4036 switch (hx->nal_unit_type) {
4040 first_slice = hx->nal_unit_type;
4043 // FIXME do not discard SEI id
4044 if (avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0)
4048 /* Ignore per frame NAL unit type during extradata
4049 * parsing. Decoding slices is not possible in codec init
4051 if (parse_extradata) {
4052 switch (hx->nal_unit_type) {
4058 case NAL_AUXILIARY_SLICE:
4059 av_log(h->s.avctx, AV_LOG_WARNING, "Ignoring NAL %d in global header/extradata\n", hx->nal_unit_type);
4060 hx->nal_unit_type = NAL_FF_IGNORE;
4066 switch (hx->nal_unit_type) {
4068 if (first_slice != NAL_IDR_SLICE) {
4069 av_log(h->s.avctx, AV_LOG_ERROR,
4070 "Invalid mix of idr and non-idr slices\n");
4075 idr(h); // FIXME ensure we don't lose some frames if there is reordering
4078 init_get_bits(&hx->s.gb, ptr, bit_length);
4080 hx->inter_gb_ptr = &hx->s.gb;
4081 hx->s.data_partitioning = 0;
4083 if ((err = decode_slice_header(hx, h)))
4086 if (h->sei_recovery_frame_cnt >= 0 && (h->frame_num != h->sei_recovery_frame_cnt || hx->slice_type_nos != AV_PICTURE_TYPE_I))
4087 h->valid_recovery_point = 1;
4089 if ( h->sei_recovery_frame_cnt >= 0
4090 && ( h->recovery_frame<0
4091 || ((h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1)) > h->sei_recovery_frame_cnt)) {
4092 h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) %
4093 (1 << h->sps.log2_max_frame_num);
4095 if (!h->valid_recovery_point)
4096 h->recovery_frame = h->frame_num;
4099 s->current_picture_ptr->f.key_frame |=
4100 (hx->nal_unit_type == NAL_IDR_SLICE);
4102 if (h->recovery_frame == h->frame_num) {
4103 s->current_picture_ptr->sync |= 1;
4104 h->recovery_frame = -1;
4107 h->sync |= !!s->current_picture_ptr->f.key_frame;
4108 h->sync |= 3*!!(s->flags2 & CODEC_FLAG2_SHOW_ALL);
4109 s->current_picture_ptr->sync |= h->sync;
4111 if (h->current_slice == 1) {
4112 if (!(s->flags2 & CODEC_FLAG2_CHUNKS))
4113 decode_postinit(h, nal_index >= nals_needed);
4115 if (s->avctx->hwaccel &&
4116 s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
4118 if (CONFIG_H264_VDPAU_DECODER &&
4119 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
4120 ff_vdpau_h264_picture_start(s);
4123 if (hx->redundant_pic_count == 0 &&
4124 (avctx->skip_frame < AVDISCARD_NONREF ||
4126 (avctx->skip_frame < AVDISCARD_BIDIR ||
4127 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4128 (avctx->skip_frame < AVDISCARD_NONKEY ||
4129 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4130 avctx->skip_frame < AVDISCARD_ALL) {
4131 if (avctx->hwaccel) {
4132 if (avctx->hwaccel->decode_slice(avctx,
4133 &buf[buf_index - consumed],
4136 } else if (CONFIG_H264_VDPAU_DECODER &&
4137 s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
4138 static const uint8_t start_code[] = {
4140 ff_vdpau_add_data_chunk(s, start_code,
4141 sizeof(start_code));
4142 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed],
4149 init_get_bits(&hx->s.gb, ptr, bit_length);
4151 hx->inter_gb_ptr = NULL;
4153 if ((err = decode_slice_header(hx, h)) < 0)
4156 hx->s.data_partitioning = 1;
4159 init_get_bits(&hx->intra_gb, ptr, bit_length);
4160 hx->intra_gb_ptr = &hx->intra_gb;
4163 init_get_bits(&hx->inter_gb, ptr, bit_length);
4164 hx->inter_gb_ptr = &hx->inter_gb;
4166 av_log(h->s.avctx, AV_LOG_ERROR, "Partitioned H.264 support is incomplete\n");
4169 if (hx->redundant_pic_count == 0 &&
4171 hx->s.data_partitioning &&
4172 s->current_picture_ptr &&
4173 s->context_initialized &&
4174 (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) &&
4175 (avctx->skip_frame < AVDISCARD_BIDIR ||
4176 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4177 (avctx->skip_frame < AVDISCARD_NONKEY ||
4178 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4179 avctx->skip_frame < AVDISCARD_ALL)
4183 init_get_bits(&s->gb, ptr, bit_length);
4184 ff_h264_decode_sei(h);
4187 init_get_bits(&s->gb, ptr, bit_length);
4188 if (ff_h264_decode_seq_parameter_set(h) < 0 && (h->is_avc ? (nalsize != consumed) && nalsize : 1)) {
4189 av_log(h->s.avctx, AV_LOG_DEBUG,
4190 "SPS decoding failure, trying again with the complete NAL\n");
4192 av_assert0(next_avc - buf_index + consumed == nalsize);
4193 if ((next_avc - buf_index + consumed - 1) >= INT_MAX/8)
4195 init_get_bits(&s->gb, &buf[buf_index + 1 - consumed],
4196 8*(next_avc - buf_index + consumed - 1));
4197 ff_h264_decode_seq_parameter_set(h);
4202 init_get_bits(&s->gb, ptr, bit_length);
4203 ff_h264_decode_picture_parameter_set(h, bit_length);
4206 case NAL_END_SEQUENCE:
4207 case NAL_END_STREAM:
4208 case NAL_FILLER_DATA:
4210 case NAL_AUXILIARY_SLICE:
4215 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
4216 hx->nal_unit_type, bit_length);
4219 if (context_count == h->max_contexts) {
4220 execute_decode_slices(h, context_count);
4225 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
4226 else if (err == 1) {
4227 /* Slice could not be decoded in parallel mode, copy down
4228 * NAL unit stuff to context 0 and restart. Note that
4229 * rbsp_buffer is not transferred, but since we no longer
4230 * run in parallel mode this should not be an issue. */
4231 h->nal_unit_type = hx->nal_unit_type;
4232 h->nal_ref_idc = hx->nal_ref_idc;
4239 execute_decode_slices(h, context_count);
4243 if (s->current_picture_ptr && s->current_picture_ptr->owner2 == s &&
4245 ff_thread_report_progress(&s->current_picture_ptr->f, INT_MAX,
4246 s->picture_structure == PICT_BOTTOM_FIELD);
4253 * Return the number of bytes consumed for building the current frame.
4255 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size)
4258 pos = 1; // avoid infinite loops (i doubt that is needed but ...)
4259 if (pos + 10 > buf_size)
4260 pos = buf_size; // oops ;)
4265 static int decode_frame(AVCodecContext *avctx, void *data,
4266 int *got_frame, AVPacket *avpkt)
4268 const uint8_t *buf = avpkt->data;
4269 int buf_size = avpkt->size;
4270 H264Context *h = avctx->priv_data;
4271 MpegEncContext *s = &h->s;
4272 AVFrame *pict = data;
4277 s->flags = avctx->flags;
4278 s->flags2 = avctx->flags2;
4280 /* end of stream, output what is still in the buffers */
4281 if (buf_size == 0) {
4284 s->current_picture_ptr = NULL;
4286 // FIXME factorize this with the output code below
4287 out = h->delayed_pic[0];
4290 h->delayed_pic[i] &&
4291 !h->delayed_pic[i]->f.key_frame &&
4292 !h->delayed_pic[i]->mmco_reset;
4294 if (h->delayed_pic[i]->poc < out->poc) {
4295 out = h->delayed_pic[i];
4299 for (i = out_idx; h->delayed_pic[i]; i++)
4300 h->delayed_pic[i] = h->delayed_pic[i + 1];
4309 if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){
4310 int cnt= buf[5]&0x1f;
4311 const uint8_t *p= buf+6;
4313 int nalsize= AV_RB16(p) + 2;
4314 if(nalsize > buf_size - (p-buf) || p[2]!=0x67)
4322 int nalsize= AV_RB16(p) + 2;
4323 if(nalsize > buf_size - (p-buf) || p[2]!=0x68)
4328 return ff_h264_decode_extradata(h, buf, buf_size);
4332 buf_index = decode_nal_units(h, buf, buf_size, 0);
4336 if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
4337 av_assert0(buf_index <= buf_size);
4341 if (!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr) {
4342 if (avctx->skip_frame >= AVDISCARD_NONREF ||
4343 buf_size >= 4 && !memcmp("Q264", buf, 4))
4345 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
4349 if (!(s->flags2 & CODEC_FLAG2_CHUNKS) ||
4350 (s->mb_y >= s->mb_height && s->mb_height)) {
4351 if (s->flags2 & CODEC_FLAG2_CHUNKS)
4352 decode_postinit(h, 1);
4355 h->context_reinitialized = 0;
4357 /* Wait for second field. */
4359 if (h->next_output_pic && (h->next_output_pic->sync || h->sync>1)) {
4361 *pict = h->next_output_pic->f;
4365 assert(pict->data[0] || !*got_frame);
4366 ff_print_debug_info(s, pict);
4368 return get_consumed_bytes(s, buf_index, buf_size);
4371 av_cold void ff_h264_free_context(H264Context *h)
4375 free_tables(h, 1); // FIXME cleanup init stuff perhaps
4377 for (i = 0; i < MAX_SPS_COUNT; i++)
4378 av_freep(h->sps_buffers + i);
4380 for (i = 0; i < MAX_PPS_COUNT; i++)
4381 av_freep(h->pps_buffers + i);
4384 static av_cold int h264_decode_end(AVCodecContext *avctx)
4386 H264Context *h = avctx->priv_data;
4387 MpegEncContext *s = &h->s;
4389 ff_h264_remove_all_refs(h);
4390 ff_h264_free_context(h);
4392 ff_MPV_common_end(s);
4394 // memset(h, 0, sizeof(H264Context));
4399 static const AVProfile profiles[] = {
4400 { FF_PROFILE_H264_BASELINE, "Baseline" },
4401 { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
4402 { FF_PROFILE_H264_MAIN, "Main" },
4403 { FF_PROFILE_H264_EXTENDED, "Extended" },
4404 { FF_PROFILE_H264_HIGH, "High" },
4405 { FF_PROFILE_H264_HIGH_10, "High 10" },
4406 { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
4407 { FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
4408 { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
4409 { FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
4410 { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
4411 { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
4412 { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
4413 { FF_PROFILE_UNKNOWN },
4416 static const AVOption h264_options[] = {
4417 {"is_avc", "is avc", offsetof(H264Context, is_avc), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0},
4418 {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0},
4422 static const AVClass h264_class = {
4423 .class_name = "H264 Decoder",
4424 .item_name = av_default_item_name,
4425 .option = h264_options,
4426 .version = LIBAVUTIL_VERSION_INT,
4429 static const AVClass h264_vdpau_class = {
4430 .class_name = "H264 VDPAU Decoder",
4431 .item_name = av_default_item_name,
4432 .option = h264_options,
4433 .version = LIBAVUTIL_VERSION_INT,
4436 AVCodec ff_h264_decoder = {
4438 .type = AVMEDIA_TYPE_VIDEO,
4439 .id = AV_CODEC_ID_H264,
4440 .priv_data_size = sizeof(H264Context),
4441 .init = ff_h264_decode_init,
4442 .close = h264_decode_end,
4443 .decode = decode_frame,
4444 .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 |
4445 CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS |
4446 CODEC_CAP_FRAME_THREADS,
4448 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
4449 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
4450 .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context),
4451 .profiles = NULL_IF_CONFIG_SMALL(profiles),
4452 .priv_class = &h264_class,
4455 #if CONFIG_H264_VDPAU_DECODER
4456 AVCodec ff_h264_vdpau_decoder = {
4457 .name = "h264_vdpau",
4458 .type = AVMEDIA_TYPE_VIDEO,
4459 .id = AV_CODEC_ID_H264,
4460 .priv_data_size = sizeof(H264Context),
4461 .init = ff_h264_decode_init,
4462 .close = h264_decode_end,
4463 .decode = decode_frame,
4464 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
4466 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
4467 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
4469 .profiles = NULL_IF_CONFIG_SMALL(profiles),
4470 .priv_class = &h264_vdpau_class,