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 / MPEG-4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #include "libavutil/avassert.h"
29 #include "libavutil/display.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/stereo3d.h"
34 #include "cabac_functions.h"
35 #include "error_resilience.h"
40 #include "h264chroma.h"
41 #include "h264_mvpred.h"
45 #include "mpegutils.h"
46 #include "mpegvideo.h"
47 #include "rectangle.h"
50 static const uint8_t field_scan[16+1] = {
51 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
52 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
53 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
54 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
57 static const uint8_t field_scan8x8[64+1] = {
58 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
59 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
60 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
61 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
62 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
63 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
64 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
65 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
66 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
67 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
68 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
69 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
70 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
71 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
72 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
73 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
76 static const uint8_t field_scan8x8_cavlc[64+1] = {
77 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
78 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
79 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
80 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
81 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
82 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
83 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
84 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
85 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
86 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
87 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
88 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
89 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
90 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
91 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
92 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
95 // zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
96 static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
97 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
98 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
99 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
100 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
101 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
102 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
103 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
104 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
105 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
106 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
107 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
108 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
109 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
110 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
111 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
112 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
115 static void release_unused_pictures(H264Context *h, int remove_current)
119 /* release non reference frames */
120 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
121 if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
122 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
123 ff_h264_unref_picture(h, &h->DPB[i]);
128 static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
130 const H264Context *h = sl->h264;
131 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
133 av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
134 // edge emu needs blocksize + filter length - 1
135 // (= 21x21 for H.264)
136 av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
138 av_fast_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0],
139 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
140 av_fast_mallocz(&sl->top_borders[1], &sl->top_borders_allocated[1],
141 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
143 if (!sl->bipred_scratchpad || !sl->edge_emu_buffer ||
144 !sl->top_borders[0] || !sl->top_borders[1]) {
145 av_freep(&sl->bipred_scratchpad);
146 av_freep(&sl->edge_emu_buffer);
147 av_freep(&sl->top_borders[0]);
148 av_freep(&sl->top_borders[1]);
150 sl->bipred_scratchpad_allocated = 0;
151 sl->edge_emu_buffer_allocated = 0;
152 sl->top_borders_allocated[0] = 0;
153 sl->top_borders_allocated[1] = 0;
154 return AVERROR(ENOMEM);
160 static int init_table_pools(H264Context *h)
162 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
163 const int mb_array_size = h->mb_stride * h->mb_height;
164 const int b4_stride = h->mb_width * 4 + 1;
165 const int b4_array_size = b4_stride * h->mb_height * 4;
167 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
169 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
170 sizeof(uint32_t), av_buffer_allocz);
171 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
172 sizeof(int16_t), av_buffer_allocz);
173 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
175 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
176 !h->ref_index_pool) {
177 av_buffer_pool_uninit(&h->qscale_table_pool);
178 av_buffer_pool_uninit(&h->mb_type_pool);
179 av_buffer_pool_uninit(&h->motion_val_pool);
180 av_buffer_pool_uninit(&h->ref_index_pool);
181 return AVERROR(ENOMEM);
187 static int alloc_picture(H264Context *h, H264Picture *pic)
191 av_assert0(!pic->f->data[0]);
194 ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
195 AV_GET_BUFFER_FLAG_REF : 0);
199 if (h->avctx->hwaccel) {
200 const AVHWAccel *hwaccel = h->avctx->hwaccel;
201 av_assert0(!pic->hwaccel_picture_private);
202 if (hwaccel->frame_priv_data_size) {
203 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
204 if (!pic->hwaccel_priv_buf)
205 return AVERROR(ENOMEM);
206 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
209 if (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) {
210 int h_chroma_shift, v_chroma_shift;
211 av_pix_fmt_get_chroma_sub_sample(pic->f->format,
212 &h_chroma_shift, &v_chroma_shift);
214 for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) {
215 memset(pic->f->data[1] + pic->f->linesize[1]*i,
216 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
217 memset(pic->f->data[2] + pic->f->linesize[2]*i,
218 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
222 if (!h->qscale_table_pool) {
223 ret = init_table_pools(h);
228 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
229 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
230 if (!pic->qscale_table_buf || !pic->mb_type_buf)
233 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
234 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
236 for (i = 0; i < 2; i++) {
237 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
238 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
239 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
242 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
243 pic->ref_index[i] = pic->ref_index_buf[i]->data;
246 pic->pps_buf = av_buffer_ref(h->ps.pps_ref);
249 pic->pps = (const PPS*)pic->pps_buf->data;
251 pic->mb_width = h->mb_width;
252 pic->mb_height = h->mb_height;
253 pic->mb_stride = h->mb_stride;
257 ff_h264_unref_picture(h, pic);
258 return (ret < 0) ? ret : AVERROR(ENOMEM);
261 static int find_unused_picture(H264Context *h)
265 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
266 if (!h->DPB[i].f->buf[0])
269 return AVERROR_INVALIDDATA;
273 #define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((b) + (size))))
275 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
276 (((pic) && (pic) >= (old_ctx)->DPB && \
277 (pic) < (old_ctx)->DPB + H264_MAX_PICTURE_COUNT) ? \
278 &(new_ctx)->DPB[(pic) - (old_ctx)->DPB] : NULL)
280 static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
281 H264Context *new_base,
282 H264Context *old_base)
286 for (i = 0; i < count; i++) {
287 av_assert1(!from[i] ||
288 IN_RANGE(from[i], old_base, 1) ||
289 IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT));
290 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
294 static int h264_slice_header_init(H264Context *h);
296 int ff_h264_update_thread_context(AVCodecContext *dst,
297 const AVCodecContext *src)
299 H264Context *h = dst->priv_data, *h1 = src->priv_data;
300 int inited = h->context_initialized, err = 0;
307 if (inited && !h1->ps.sps)
308 return AVERROR_INVALIDDATA;
311 (h->width != h1->width ||
312 h->height != h1->height ||
313 h->mb_width != h1->mb_width ||
314 h->mb_height != h1->mb_height ||
316 h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
317 h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
318 h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
322 /* copy block_offset since frame_start may not be called */
323 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
326 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
327 ret = av_buffer_replace(&h->ps.sps_list[i], h1->ps.sps_list[i]);
331 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
332 ret = av_buffer_replace(&h->ps.pps_list[i], h1->ps.pps_list[i]);
337 ret = av_buffer_replace(&h->ps.pps_ref, h1->ps.pps_ref);
342 if (h1->ps.pps_ref) {
343 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
344 h->ps.sps = h->ps.pps->sps;
347 if (need_reinit || !inited) {
348 h->width = h1->width;
349 h->height = h1->height;
350 h->mb_height = h1->mb_height;
351 h->mb_width = h1->mb_width;
352 h->mb_num = h1->mb_num;
353 h->mb_stride = h1->mb_stride;
354 h->b_stride = h1->b_stride;
355 h->x264_build = h1->x264_build;
357 if (h->context_initialized || h1->context_initialized) {
358 if ((err = h264_slice_header_init(h)) < 0) {
359 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
364 /* copy block_offset since frame_start may not be called */
365 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
368 h->avctx->coded_height = h1->avctx->coded_height;
369 h->avctx->coded_width = h1->avctx->coded_width;
370 h->avctx->width = h1->avctx->width;
371 h->avctx->height = h1->avctx->height;
372 h->width_from_caller = h1->width_from_caller;
373 h->height_from_caller = h1->height_from_caller;
374 h->coded_picture_number = h1->coded_picture_number;
375 h->first_field = h1->first_field;
376 h->picture_structure = h1->picture_structure;
377 h->mb_aff_frame = h1->mb_aff_frame;
378 h->droppable = h1->droppable;
380 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
381 ff_h264_unref_picture(h, &h->DPB[i]);
382 if (h1->DPB[i].f->buf[0] &&
383 (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
387 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
388 ff_h264_unref_picture(h, &h->cur_pic);
389 if (h1->cur_pic.f->buf[0]) {
390 ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
395 h->enable_er = h1->enable_er;
396 h->workaround_bugs = h1->workaround_bugs;
397 h->droppable = h1->droppable;
399 // extradata/NAL handling
400 h->is_avc = h1->is_avc;
401 h->nal_length_size = h1->nal_length_size;
403 memcpy(&h->poc, &h1->poc, sizeof(h->poc));
405 memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
406 memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
407 memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
408 memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
410 h->next_output_pic = h1->next_output_pic;
411 h->next_outputed_poc = h1->next_outputed_poc;
413 memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
414 h->nb_mmco = h1->nb_mmco;
415 h->mmco_reset = h1->mmco_reset;
416 h->explicit_ref_marking = h1->explicit_ref_marking;
417 h->long_ref_count = h1->long_ref_count;
418 h->short_ref_count = h1->short_ref_count;
420 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
421 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
422 copy_picture_range(h->delayed_pic, h1->delayed_pic,
423 MAX_DELAYED_PIC_COUNT + 2, h, h1);
425 h->frame_recovered = h1->frame_recovered;
427 ret = av_buffer_replace(&h->sei.a53_caption.buf_ref, h1->sei.a53_caption.buf_ref);
431 for (i = 0; i < h->sei.unregistered.nb_buf_ref; i++)
432 av_buffer_unref(&h->sei.unregistered.buf_ref[i]);
433 h->sei.unregistered.nb_buf_ref = 0;
435 if (h1->sei.unregistered.nb_buf_ref) {
436 ret = av_reallocp_array(&h->sei.unregistered.buf_ref,
437 h1->sei.unregistered.nb_buf_ref,
438 sizeof(*h->sei.unregistered.buf_ref));
442 for (i = 0; i < h1->sei.unregistered.nb_buf_ref; i++) {
443 h->sei.unregistered.buf_ref[i] = av_buffer_ref(h1->sei.unregistered.buf_ref[i]);
444 if (!h->sei.unregistered.buf_ref[i])
445 return AVERROR(ENOMEM);
446 h->sei.unregistered.nb_buf_ref++;
449 h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build;
455 err = ff_h264_execute_ref_pic_marking(h);
456 h->poc.prev_poc_msb = h->poc.poc_msb;
457 h->poc.prev_poc_lsb = h->poc.poc_lsb;
459 h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
460 h->poc.prev_frame_num = h->poc.frame_num;
462 h->recovery_frame = h1->recovery_frame;
467 int ff_h264_update_thread_context_for_user(AVCodecContext *dst,
468 const AVCodecContext *src)
470 H264Context *h = dst->priv_data;
471 const H264Context *h1 = src->priv_data;
473 h->is_avc = h1->is_avc;
474 h->nal_length_size = h1->nal_length_size;
479 static int h264_frame_start(H264Context *h)
483 const int pixel_shift = h->pixel_shift;
485 if (!ff_thread_can_start_frame(h->avctx)) {
486 av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
490 release_unused_pictures(h, 1);
491 h->cur_pic_ptr = NULL;
493 i = find_unused_picture(h);
495 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
500 pic->reference = h->droppable ? 0 : h->picture_structure;
501 pic->f->coded_picture_number = h->coded_picture_number++;
502 pic->field_picture = h->picture_structure != PICT_FRAME;
503 pic->frame_num = h->poc.frame_num;
505 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
507 * See decode_nal_units().
509 pic->f->key_frame = 0;
512 pic->invalid_gap = 0;
513 pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
515 pic->f->pict_type = h->slice_ctx[0].slice_type;
517 pic->f->crop_left = h->crop_left;
518 pic->f->crop_right = h->crop_right;
519 pic->f->crop_top = h->crop_top;
520 pic->f->crop_bottom = h->crop_bottom;
522 if ((ret = alloc_picture(h, pic)) < 0)
525 h->cur_pic_ptr = pic;
526 ff_h264_unref_picture(h, &h->cur_pic);
527 if (CONFIG_ERROR_RESILIENCE) {
528 ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
531 if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
534 for (i = 0; i < h->nb_slice_ctx; i++) {
535 h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
536 h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
539 if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
540 ff_er_frame_start(&h->slice_ctx[0].er);
541 ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
542 ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
545 for (i = 0; i < 16; i++) {
546 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
547 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
549 for (i = 0; i < 16; i++) {
550 h->block_offset[16 + i] =
551 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
552 h->block_offset[48 + 16 + i] =
553 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
556 /* We mark the current picture as non-reference after allocating it, so
557 * that if we break out due to an error it can be released automatically
558 * in the next ff_mpv_frame_start().
560 h->cur_pic_ptr->reference = 0;
562 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
564 h->next_output_pic = NULL;
566 h->postpone_filter = 0;
568 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
570 if (h->sei.unregistered.x264_build >= 0)
571 h->x264_build = h->sei.unregistered.x264_build;
573 assert(h->cur_pic_ptr->long_ref == 0);
578 static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
580 uint8_t *src_cb, uint8_t *src_cr,
581 int linesize, int uvlinesize,
586 const int pixel_shift = h->pixel_shift;
587 int chroma444 = CHROMA444(h);
588 int chroma422 = CHROMA422(h);
591 src_cb -= uvlinesize;
592 src_cr -= uvlinesize;
594 if (!simple && FRAME_MBAFF(h)) {
597 top_border = sl->top_borders[0][sl->mb_x];
598 AV_COPY128(top_border, src_y + 15 * linesize);
600 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
601 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
604 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
605 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
606 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
607 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
609 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
610 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
612 } else if (chroma422) {
614 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
615 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
617 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
618 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
622 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
623 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
625 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
626 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
631 } else if (MB_MBAFF(sl)) {
637 top_border = sl->top_borders[top_idx][sl->mb_x];
638 /* There are two lines saved, the line above the top macroblock
639 * of a pair, and the line above the bottom macroblock. */
640 AV_COPY128(top_border, src_y + 16 * linesize);
642 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
644 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
647 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
648 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
649 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
650 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
652 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
653 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
655 } else if (chroma422) {
657 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
658 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
660 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
661 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
665 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
666 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
668 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
669 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
676 * Initialize implicit_weight table.
677 * @param field 0/1 initialize the weight for interlaced MBAFF
678 * -1 initializes the rest
680 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
682 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
684 for (i = 0; i < 2; i++) {
685 sl->pwt.luma_weight_flag[i] = 0;
686 sl->pwt.chroma_weight_flag[i] = 0;
690 if (h->picture_structure == PICT_FRAME) {
691 cur_poc = h->cur_pic_ptr->poc;
693 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
695 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
696 sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2LL * cur_poc) {
697 sl->pwt.use_weight = 0;
698 sl->pwt.use_weight_chroma = 0;
702 ref_count0 = sl->ref_count[0];
703 ref_count1 = sl->ref_count[1];
705 cur_poc = h->cur_pic_ptr->field_poc[field];
707 ref_count0 = 16 + 2 * sl->ref_count[0];
708 ref_count1 = 16 + 2 * sl->ref_count[1];
711 sl->pwt.use_weight = 2;
712 sl->pwt.use_weight_chroma = 2;
713 sl->pwt.luma_log2_weight_denom = 5;
714 sl->pwt.chroma_log2_weight_denom = 5;
716 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
717 int64_t poc0 = sl->ref_list[0][ref0].poc;
718 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
720 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
721 int poc1 = sl->ref_list[1][ref1].poc;
722 int td = av_clip_int8(poc1 - poc0);
724 int tb = av_clip_int8(cur_poc - poc0);
725 int tx = (16384 + (FFABS(td) >> 1)) / td;
726 int dist_scale_factor = (tb * tx + 32) >> 8;
727 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
728 w = 64 - dist_scale_factor;
732 sl->pwt.implicit_weight[ref0][ref1][0] =
733 sl->pwt.implicit_weight[ref0][ref1][1] = w;
735 sl->pwt.implicit_weight[ref0][ref1][field] = w;
742 * initialize scan tables
744 static void init_scan_tables(H264Context *h)
747 for (i = 0; i < 16; i++) {
748 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
749 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
750 h->field_scan[i] = TRANSPOSE(field_scan[i]);
753 for (i = 0; i < 64; i++) {
754 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
755 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
756 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
757 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
758 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
761 if (h->ps.sps->transform_bypass) { // FIXME same ugly
762 memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
763 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
764 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
765 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
766 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
767 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
769 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
770 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
771 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
772 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
773 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
774 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
778 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
780 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
781 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
782 CONFIG_H264_NVDEC_HWACCEL + \
783 CONFIG_H264_VAAPI_HWACCEL + \
784 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
785 CONFIG_H264_VDPAU_HWACCEL)
786 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
787 const enum AVPixelFormat *choices = pix_fmts;
790 switch (h->ps.sps->bit_depth_luma) {
793 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
794 *fmt++ = AV_PIX_FMT_GBRP9;
796 *fmt++ = AV_PIX_FMT_YUV444P9;
797 } else if (CHROMA422(h))
798 *fmt++ = AV_PIX_FMT_YUV422P9;
800 *fmt++ = AV_PIX_FMT_YUV420P9;
804 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
805 *fmt++ = AV_PIX_FMT_GBRP10;
807 *fmt++ = AV_PIX_FMT_YUV444P10;
808 } else if (CHROMA422(h))
809 *fmt++ = AV_PIX_FMT_YUV422P10;
811 *fmt++ = AV_PIX_FMT_YUV420P10;
815 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
816 *fmt++ = AV_PIX_FMT_GBRP12;
818 *fmt++ = AV_PIX_FMT_YUV444P12;
819 } else if (CHROMA422(h))
820 *fmt++ = AV_PIX_FMT_YUV422P12;
822 *fmt++ = AV_PIX_FMT_YUV420P12;
826 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
827 *fmt++ = AV_PIX_FMT_GBRP14;
829 *fmt++ = AV_PIX_FMT_YUV444P14;
830 } else if (CHROMA422(h))
831 *fmt++ = AV_PIX_FMT_YUV422P14;
833 *fmt++ = AV_PIX_FMT_YUV420P14;
836 #if CONFIG_H264_VDPAU_HWACCEL
837 *fmt++ = AV_PIX_FMT_VDPAU;
839 #if CONFIG_H264_NVDEC_HWACCEL
840 *fmt++ = AV_PIX_FMT_CUDA;
843 if (h->avctx->colorspace == AVCOL_SPC_RGB)
844 *fmt++ = AV_PIX_FMT_GBRP;
845 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
846 *fmt++ = AV_PIX_FMT_YUVJ444P;
848 *fmt++ = AV_PIX_FMT_YUV444P;
849 } else if (CHROMA422(h)) {
850 if (h->avctx->color_range == AVCOL_RANGE_JPEG)
851 *fmt++ = AV_PIX_FMT_YUVJ422P;
853 *fmt++ = AV_PIX_FMT_YUV422P;
855 #if CONFIG_H264_DXVA2_HWACCEL
856 *fmt++ = AV_PIX_FMT_DXVA2_VLD;
858 #if CONFIG_H264_D3D11VA_HWACCEL
859 *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
860 *fmt++ = AV_PIX_FMT_D3D11;
862 #if CONFIG_H264_VAAPI_HWACCEL
863 *fmt++ = AV_PIX_FMT_VAAPI;
865 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
866 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
868 if (h->avctx->codec->pix_fmts)
869 choices = h->avctx->codec->pix_fmts;
870 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
871 *fmt++ = AV_PIX_FMT_YUVJ420P;
873 *fmt++ = AV_PIX_FMT_YUV420P;
877 av_log(h->avctx, AV_LOG_ERROR,
878 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
879 return AVERROR_INVALIDDATA;
882 *fmt = AV_PIX_FMT_NONE;
884 for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
885 if (choices[i] == h->avctx->pix_fmt && !force_callback)
887 return ff_thread_get_format(h->avctx, choices);
890 /* export coded and cropped frame dimensions to AVCodecContext */
891 static void init_dimensions(H264Context *h)
893 const SPS *sps = (const SPS*)h->ps.sps;
894 int cr = sps->crop_right;
895 int cl = sps->crop_left;
896 int ct = sps->crop_top;
897 int cb = sps->crop_bottom;
898 int width = h->width - (cr + cl);
899 int height = h->height - (ct + cb);
900 av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
901 av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
903 /* handle container cropping */
904 if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
905 !sps->crop_top && !sps->crop_left &&
906 FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
907 FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
908 h->width_from_caller <= width &&
909 h->height_from_caller <= height) {
910 width = h->width_from_caller;
911 height = h->height_from_caller;
914 cr = h->width - width;
915 cb = h->height - height;
917 h->width_from_caller = 0;
918 h->height_from_caller = 0;
921 h->avctx->coded_width = h->width;
922 h->avctx->coded_height = h->height;
923 h->avctx->width = width;
924 h->avctx->height = height;
931 static int h264_slice_header_init(H264Context *h)
933 const SPS *sps = h->ps.sps;
937 ret = AVERROR_INVALIDDATA;
941 ff_set_sar(h->avctx, sps->sar);
942 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
943 &h->chroma_x_shift, &h->chroma_y_shift);
945 if (sps->timing_info_present_flag) {
946 int64_t den = sps->time_scale;
947 if (h->x264_build < 44U)
949 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
950 sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
953 ff_h264_free_tables(h);
956 h->prev_interlaced_frame = 1;
959 ret = ff_h264_alloc_tables(h);
961 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
965 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
966 sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
968 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
969 sps->bit_depth_luma);
970 ret = AVERROR_INVALIDDATA;
974 h->cur_bit_depth_luma =
975 h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
976 h->cur_chroma_format_idc = sps->chroma_format_idc;
977 h->pixel_shift = sps->bit_depth_luma > 8;
978 h->chroma_format_idc = sps->chroma_format_idc;
979 h->bit_depth_luma = sps->bit_depth_luma;
981 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
982 sps->chroma_format_idc);
983 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
984 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
985 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
986 sps->chroma_format_idc);
987 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
989 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
990 ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
992 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
996 for (i = 0; i < h->nb_slice_ctx; i++) {
997 H264SliceContext *sl = &h->slice_ctx[i];
1000 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
1001 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
1002 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
1004 if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
1005 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
1011 h->context_initialized = 1;
1015 ff_h264_free_tables(h);
1016 h->context_initialized = 0;
1020 static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
1023 case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P;
1024 case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P;
1025 case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P;
1031 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1034 int needs_reinit = 0, must_reinit, ret;
1037 av_buffer_unref(&h->ps.pps_ref);
1039 h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1041 return AVERROR(ENOMEM);
1042 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1045 if (h->ps.sps != h->ps.pps->sps) {
1046 h->ps.sps = (const SPS*)h->ps.pps->sps;
1048 if (h->mb_width != h->ps.sps->mb_width ||
1049 h->mb_height != h->ps.sps->mb_height ||
1050 h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
1051 h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
1055 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1056 h->chroma_format_idc != h->ps.sps->chroma_format_idc)
1061 must_reinit = (h->context_initialized &&
1062 ( 16*sps->mb_width != h->avctx->coded_width
1063 || 16*sps->mb_height != h->avctx->coded_height
1064 || h->cur_bit_depth_luma != sps->bit_depth_luma
1065 || h->cur_chroma_format_idc != sps->chroma_format_idc
1066 || h->mb_width != sps->mb_width
1067 || h->mb_height != sps->mb_height
1069 if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1070 || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
1073 if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1076 if (!h->setup_finished) {
1077 h->avctx->profile = ff_h264_get_profile(sps);
1078 h->avctx->level = sps->level_idc;
1079 h->avctx->refs = sps->ref_frame_count;
1081 h->mb_width = sps->mb_width;
1082 h->mb_height = sps->mb_height;
1083 h->mb_num = h->mb_width * h->mb_height;
1084 h->mb_stride = h->mb_width + 1;
1086 h->b_stride = h->mb_width * 4;
1088 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1090 h->width = 16 * h->mb_width;
1091 h->height = 16 * h->mb_height;
1095 if (sps->video_signal_type_present_flag) {
1096 h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1098 if (sps->colour_description_present_flag) {
1099 if (h->avctx->colorspace != sps->colorspace)
1101 h->avctx->color_primaries = sps->color_primaries;
1102 h->avctx->color_trc = sps->color_trc;
1103 h->avctx->colorspace = sps->colorspace;
1107 if (h->sei.alternative_transfer.present &&
1108 av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) &&
1109 h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) {
1110 h->avctx->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics;
1113 h->avctx->chroma_sample_location = sps->chroma_location;
1115 if (!h->context_initialized || must_reinit || needs_reinit) {
1116 int flush_changes = h->context_initialized;
1117 h->context_initialized = 0;
1118 if (sl != h->slice_ctx) {
1119 av_log(h->avctx, AV_LOG_ERROR,
1120 "changing width %d -> %d / height %d -> %d on "
1122 h->width, h->avctx->coded_width,
1123 h->height, h->avctx->coded_height,
1124 h->current_slice + 1);
1125 return AVERROR_INVALIDDATA;
1128 av_assert1(first_slice);
1131 ff_h264_flush_change(h);
1133 if ((ret = get_pixel_format(h, 1)) < 0)
1135 h->avctx->pix_fmt = ret;
1137 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1138 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1140 if ((ret = h264_slice_header_init(h)) < 0) {
1141 av_log(h->avctx, AV_LOG_ERROR,
1142 "h264_slice_header_init() failed\n");
1150 static int h264_export_frame_props(H264Context *h)
1152 const SPS *sps = h->ps.sps;
1153 H264Picture *cur = h->cur_pic_ptr;
1154 AVFrame *out = cur->f;
1156 out->interlaced_frame = 0;
1157 out->repeat_pict = 0;
1159 /* Signal interlacing information externally. */
1160 /* Prioritize picture timing SEI information over used
1161 * decoding process if it exists. */
1162 if (h->sei.picture_timing.present) {
1163 int ret = ff_h264_sei_process_picture_timing(&h->sei.picture_timing, sps,
1166 av_log(h->avctx, AV_LOG_ERROR, "Error processing a picture timing SEI\n");
1167 if (h->avctx->err_recognition & AV_EF_EXPLODE)
1169 h->sei.picture_timing.present = 0;
1173 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1174 H264SEIPictureTiming *pt = &h->sei.picture_timing;
1175 switch (pt->pic_struct) {
1176 case H264_SEI_PIC_STRUCT_FRAME:
1178 case H264_SEI_PIC_STRUCT_TOP_FIELD:
1179 case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
1180 out->interlaced_frame = 1;
1182 case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
1183 case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
1184 if (FIELD_OR_MBAFF_PICTURE(h))
1185 out->interlaced_frame = 1;
1187 // try to flag soft telecine progressive
1188 out->interlaced_frame = h->prev_interlaced_frame;
1190 case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1191 case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1192 /* Signal the possibility of telecined film externally
1193 * (pic_struct 5,6). From these hints, let the applications
1194 * decide if they apply deinterlacing. */
1195 out->repeat_pict = 1;
1197 case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
1198 out->repeat_pict = 2;
1200 case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
1201 out->repeat_pict = 4;
1205 if ((pt->ct_type & 3) &&
1206 pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
1207 out->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1209 /* Derive interlacing flag from used decoding process. */
1210 out->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1212 h->prev_interlaced_frame = out->interlaced_frame;
1214 if (cur->field_poc[0] != cur->field_poc[1]) {
1215 /* Derive top_field_first from field pocs. */
1216 out->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1218 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1219 /* Use picture timing SEI information. Even if it is a
1220 * information of a past frame, better than nothing. */
1221 if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
1222 h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1223 out->top_field_first = 1;
1225 out->top_field_first = 0;
1226 } else if (out->interlaced_frame) {
1227 /* Default to top field first when pic_struct_present_flag
1228 * is not set but interlaced frame detected */
1229 out->top_field_first = 1;
1231 /* Most likely progressive */
1232 out->top_field_first = 0;
1236 if (h->sei.frame_packing.present &&
1237 h->sei.frame_packing.arrangement_type <= 6 &&
1238 h->sei.frame_packing.content_interpretation_type > 0 &&
1239 h->sei.frame_packing.content_interpretation_type < 3) {
1240 H264SEIFramePacking *fp = &h->sei.frame_packing;
1241 AVStereo3D *stereo = av_stereo3d_create_side_data(out);
1243 switch (fp->arrangement_type) {
1244 case H264_SEI_FPA_TYPE_CHECKERBOARD:
1245 stereo->type = AV_STEREO3D_CHECKERBOARD;
1247 case H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN:
1248 stereo->type = AV_STEREO3D_COLUMNS;
1250 case H264_SEI_FPA_TYPE_INTERLEAVE_ROW:
1251 stereo->type = AV_STEREO3D_LINES;
1253 case H264_SEI_FPA_TYPE_SIDE_BY_SIDE:
1254 if (fp->quincunx_sampling_flag)
1255 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1257 stereo->type = AV_STEREO3D_SIDEBYSIDE;
1259 case H264_SEI_FPA_TYPE_TOP_BOTTOM:
1260 stereo->type = AV_STEREO3D_TOPBOTTOM;
1262 case H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL:
1263 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1265 case H264_SEI_FPA_TYPE_2D:
1266 stereo->type = AV_STEREO3D_2D;
1270 if (fp->content_interpretation_type == 2)
1271 stereo->flags = AV_STEREO3D_FLAG_INVERT;
1273 if (fp->arrangement_type == H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) {
1274 if (fp->current_frame_is_frame0_flag)
1275 stereo->view = AV_STEREO3D_VIEW_LEFT;
1277 stereo->view = AV_STEREO3D_VIEW_RIGHT;
1282 if (h->sei.display_orientation.present &&
1283 (h->sei.display_orientation.anticlockwise_rotation ||
1284 h->sei.display_orientation.hflip ||
1285 h->sei.display_orientation.vflip)) {
1286 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1287 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1288 AVFrameSideData *rotation = av_frame_new_side_data(out,
1289 AV_FRAME_DATA_DISPLAYMATRIX,
1290 sizeof(int32_t) * 9);
1292 av_display_rotation_set((int32_t *)rotation->data, angle);
1293 av_display_matrix_flip((int32_t *)rotation->data,
1294 o->hflip, o->vflip);
1298 if (h->sei.afd.present) {
1299 AVFrameSideData *sd = av_frame_new_side_data(out, AV_FRAME_DATA_AFD,
1303 *sd->data = h->sei.afd.active_format_description;
1304 h->sei.afd.present = 0;
1308 if (h->sei.a53_caption.buf_ref) {
1309 H264SEIA53Caption *a53 = &h->sei.a53_caption;
1311 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out, AV_FRAME_DATA_A53_CC, a53->buf_ref);
1313 av_buffer_unref(&a53->buf_ref);
1314 a53->buf_ref = NULL;
1316 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
1319 for (int i = 0; i < h->sei.unregistered.nb_buf_ref; i++) {
1320 H264SEIUnregistered *unreg = &h->sei.unregistered;
1322 if (unreg->buf_ref[i]) {
1323 AVFrameSideData *sd = av_frame_new_side_data_from_buf(out,
1324 AV_FRAME_DATA_SEI_UNREGISTERED,
1327 av_buffer_unref(&unreg->buf_ref[i]);
1328 unreg->buf_ref[i] = NULL;
1331 h->sei.unregistered.nb_buf_ref = 0;
1333 if (h->sei.picture_timing.timecode_cnt > 0) {
1335 char tcbuf[AV_TIMECODE_STR_SIZE];
1337 AVFrameSideData *tcside = av_frame_new_side_data(out,
1338 AV_FRAME_DATA_S12M_TIMECODE,
1339 sizeof(uint32_t)*4);
1341 return AVERROR(ENOMEM);
1343 tc_sd = (uint32_t*)tcside->data;
1344 tc_sd[0] = h->sei.picture_timing.timecode_cnt;
1346 for (int i = 0; i < tc_sd[0]; i++) {
1347 int drop = h->sei.picture_timing.timecode[i].dropframe;
1348 int hh = h->sei.picture_timing.timecode[i].hours;
1349 int mm = h->sei.picture_timing.timecode[i].minutes;
1350 int ss = h->sei.picture_timing.timecode[i].seconds;
1351 int ff = h->sei.picture_timing.timecode[i].frame;
1353 tc_sd[i + 1] = av_timecode_get_smpte(h->avctx->framerate, drop, hh, mm, ss, ff);
1354 av_timecode_make_smpte_tc_string2(tcbuf, h->avctx->framerate, tc_sd[i + 1], 0, 0);
1355 av_dict_set(&out->metadata, "timecode", tcbuf, 0);
1357 h->sei.picture_timing.timecode_cnt = 0;
1363 static int h264_select_output_frame(H264Context *h)
1365 const SPS *sps = h->ps.sps;
1366 H264Picture *out = h->cur_pic_ptr;
1367 H264Picture *cur = h->cur_pic_ptr;
1368 int i, pics, out_of_order, out_idx;
1370 cur->mmco_reset = h->mmco_reset;
1373 if (sps->bitstream_restriction_flag ||
1374 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
1375 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
1378 for (i = 0; 1; i++) {
1379 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1381 h->last_pocs[i-1] = cur->poc;
1384 h->last_pocs[i-1]= h->last_pocs[i];
1387 out_of_order = MAX_DELAYED_PIC_COUNT - i;
1388 if( cur->f->pict_type == AV_PICTURE_TYPE_B
1389 || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - (int64_t)h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
1390 out_of_order = FFMAX(out_of_order, 1);
1391 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1392 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1393 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1394 h->last_pocs[i] = INT_MIN;
1395 h->last_pocs[0] = cur->poc;
1396 cur->mmco_reset = 1;
1397 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1398 int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1399 av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1400 h->avctx->has_b_frames = out_of_order;
1404 while (h->delayed_pic[pics])
1407 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1409 h->delayed_pic[pics++] = cur;
1410 if (cur->reference == 0)
1411 cur->reference = DELAYED_PIC_REF;
1413 out = h->delayed_pic[0];
1415 for (i = 1; h->delayed_pic[i] &&
1416 !h->delayed_pic[i]->f->key_frame &&
1417 !h->delayed_pic[i]->mmco_reset;
1419 if (h->delayed_pic[i]->poc < out->poc) {
1420 out = h->delayed_pic[i];
1423 if (h->avctx->has_b_frames == 0 &&
1424 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1425 h->next_outputed_poc = INT_MIN;
1426 out_of_order = out->poc < h->next_outputed_poc;
1428 if (out_of_order || pics > h->avctx->has_b_frames) {
1429 out->reference &= ~DELAYED_PIC_REF;
1430 for (i = out_idx; h->delayed_pic[i]; i++)
1431 h->delayed_pic[i] = h->delayed_pic[i + 1];
1433 if (!out_of_order && pics > h->avctx->has_b_frames) {
1434 h->next_output_pic = out;
1435 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1436 h->next_outputed_poc = INT_MIN;
1438 h->next_outputed_poc = out->poc;
1440 if (out->recovered) {
1441 // We have reached an recovery point and all frames after it in
1442 // display order are "recovered".
1443 h->frame_recovered |= FRAME_RECOVERED_SEI;
1445 out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
1447 if (!out->recovered) {
1448 if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1449 !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) {
1450 h->next_output_pic = NULL;
1452 out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1456 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1462 /* This function is called right after decoding the slice header for a first
1463 * slice in a field (or a frame). It decides whether we are decoding a new frame
1464 * or a second field in a pair and does the necessary setup.
1466 static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1467 const H2645NAL *nal, int first_slice)
1472 int last_pic_structure, last_pic_droppable, ret;
1474 ret = h264_init_ps(h, sl, first_slice);
1480 if (sps && sps->bitstream_restriction_flag &&
1481 h->avctx->has_b_frames < sps->num_reorder_frames) {
1482 h->avctx->has_b_frames = sps->num_reorder_frames;
1485 last_pic_droppable = h->droppable;
1486 last_pic_structure = h->picture_structure;
1487 h->droppable = (nal->ref_idc == 0);
1488 h->picture_structure = sl->picture_structure;
1490 h->poc.frame_num = sl->frame_num;
1491 h->poc.poc_lsb = sl->poc_lsb;
1492 h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1493 h->poc.delta_poc[0] = sl->delta_poc[0];
1494 h->poc.delta_poc[1] = sl->delta_poc[1];
1496 /* Shorten frame num gaps so we don't have to allocate reference
1497 * frames just to throw them away */
1498 if (h->poc.frame_num != h->poc.prev_frame_num) {
1499 int unwrap_prev_frame_num = h->poc.prev_frame_num;
1500 int max_frame_num = 1 << sps->log2_max_frame_num;
1502 if (unwrap_prev_frame_num > h->poc.frame_num)
1503 unwrap_prev_frame_num -= max_frame_num;
1505 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1506 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1507 if (unwrap_prev_frame_num < 0)
1508 unwrap_prev_frame_num += max_frame_num;
1510 h->poc.prev_frame_num = unwrap_prev_frame_num;
1514 /* See if we have a decoded first field looking for a pair...
1515 * Here, we're using that to see if we should mark previously
1516 * decode frames as "finished".
1517 * We have to do that before the "dummy" in-between frame allocation,
1518 * since that can modify h->cur_pic_ptr. */
1519 if (h->first_field) {
1520 int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1521 av_assert0(h->cur_pic_ptr);
1522 av_assert0(h->cur_pic_ptr->f->buf[0]);
1523 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1525 /* Mark old field/frame as completed */
1526 if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1527 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1530 /* figure out if we have a complementary field pair */
1531 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1532 /* Previous field is unmatched. Don't display it, but let it
1533 * remain for reference if marked as such. */
1534 if (last_pic_structure != PICT_FRAME) {
1535 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1536 last_pic_structure == PICT_TOP_FIELD);
1539 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1540 /* This and previous field were reference, but had
1541 * different frame_nums. Consider this field first in
1542 * pair. Throw away previous field except for reference
1544 if (last_pic_structure != PICT_FRAME) {
1545 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1546 last_pic_structure == PICT_TOP_FIELD);
1549 /* Second field in complementary pair */
1550 if (!((last_pic_structure == PICT_TOP_FIELD &&
1551 h->picture_structure == PICT_BOTTOM_FIELD) ||
1552 (last_pic_structure == PICT_BOTTOM_FIELD &&
1553 h->picture_structure == PICT_TOP_FIELD))) {
1554 av_log(h->avctx, AV_LOG_ERROR,
1555 "Invalid field mode combination %d/%d\n",
1556 last_pic_structure, h->picture_structure);
1557 h->picture_structure = last_pic_structure;
1558 h->droppable = last_pic_droppable;
1559 return AVERROR_INVALIDDATA;
1560 } else if (last_pic_droppable != h->droppable) {
1561 avpriv_request_sample(h->avctx,
1562 "Found reference and non-reference fields in the same frame, which");
1563 h->picture_structure = last_pic_structure;
1564 h->droppable = last_pic_droppable;
1565 return AVERROR_PATCHWELCOME;
1571 while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1572 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1573 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1574 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1575 h->poc.frame_num, h->poc.prev_frame_num);
1576 if (!sps->gaps_in_frame_num_allowed_flag)
1577 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1578 h->last_pocs[i] = INT_MIN;
1579 ret = h264_frame_start(h);
1585 h->poc.prev_frame_num++;
1586 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1587 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1588 h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag;
1589 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1590 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1592 h->explicit_ref_marking = 0;
1593 ret = ff_h264_execute_ref_pic_marking(h);
1594 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1596 /* Error concealment: If a ref is missing, copy the previous ref
1598 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1599 * many assumptions about there being no actual duplicates.
1600 * FIXME: This does not copy padding for out-of-frame motion
1601 * vectors. Given we are concealing a lost frame, this probably
1602 * is not noticeable by comparison, but it should be fixed. */
1603 if (h->short_ref_count) {
1605 1<<(h->ps.sps->bit_depth_luma-1),
1606 1<<(h->ps.sps->bit_depth_chroma-1),
1607 1<<(h->ps.sps->bit_depth_chroma-1),
1612 h->short_ref[0]->f->width == prev->f->width &&
1613 h->short_ref[0]->f->height == prev->f->height &&
1614 h->short_ref[0]->f->format == prev->f->format) {
1615 ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1616 if (prev->field_picture)
1617 ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1618 ff_thread_release_buffer(h->avctx, &h->short_ref[0]->tf);
1619 h->short_ref[0]->tf.f = h->short_ref[0]->f;
1620 ret = ff_thread_ref_frame(&h->short_ref[0]->tf, &prev->tf);
1623 h->short_ref[0]->poc = prev->poc + 2U;
1624 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 0);
1625 if (h->short_ref[0]->field_picture)
1626 ff_thread_report_progress(&h->short_ref[0]->tf, INT_MAX, 1);
1627 } else if (!h->frame_recovered && !h->avctx->hwaccel)
1628 ff_color_frame(h->short_ref[0]->f, c);
1629 h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1633 /* See if we have a decoded first field looking for a pair...
1634 * We're using that to see whether to continue decoding in that
1635 * frame, or to allocate a new one. */
1636 if (h->first_field) {
1637 av_assert0(h->cur_pic_ptr);
1638 av_assert0(h->cur_pic_ptr->f->buf[0]);
1639 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1641 /* figure out if we have a complementary field pair */
1642 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1643 /* Previous field is unmatched. Don't display it, but let it
1644 * remain for reference if marked as such. */
1645 h->missing_fields ++;
1646 h->cur_pic_ptr = NULL;
1647 h->first_field = FIELD_PICTURE(h);
1649 h->missing_fields = 0;
1650 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1651 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1652 h->picture_structure==PICT_BOTTOM_FIELD);
1653 /* This and the previous field had different frame_nums.
1654 * Consider this field first in pair. Throw away previous
1655 * one except for reference purposes. */
1657 h->cur_pic_ptr = NULL;
1658 } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) {
1659 /* This frame was already output, we cannot draw into it
1663 h->cur_pic_ptr = NULL;
1665 /* Second field in complementary pair */
1670 /* Frame or first field in a potentially complementary pair */
1671 h->first_field = FIELD_PICTURE(h);
1674 if (!FIELD_PICTURE(h) || h->first_field) {
1675 if (h264_frame_start(h) < 0) {
1677 return AVERROR_INVALIDDATA;
1680 int field = h->picture_structure == PICT_BOTTOM_FIELD;
1681 release_unused_pictures(h, 0);
1682 h->cur_pic_ptr->tf.owner[field] = h->avctx;
1684 /* Some macroblocks can be accessed before they're available in case
1685 * of lost slices, MBAFF or threading. */
1686 if (FIELD_PICTURE(h)) {
1687 for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
1688 memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
1690 memset(h->slice_table, -1,
1691 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
1694 ret = ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
1695 h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1699 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1700 h->nb_mmco = sl->nb_mmco;
1701 h->explicit_ref_marking = sl->explicit_ref_marking;
1703 h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1705 if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1706 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1708 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1709 h->valid_recovery_point = 1;
1711 if ( h->recovery_frame < 0
1712 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1713 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1715 if (!h->valid_recovery_point)
1716 h->recovery_frame = h->poc.frame_num;
1720 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1722 if (nal->type == H264_NAL_IDR_SLICE ||
1723 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1724 h->recovery_frame = -1;
1725 h->cur_pic_ptr->recovered = 1;
1727 // If we have an IDR, all frames after it in decoded order are
1729 if (nal->type == H264_NAL_IDR_SLICE)
1730 h->frame_recovered |= FRAME_RECOVERED_IDR;
1732 h->cur_pic_ptr->recovered |= h->frame_recovered;
1734 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1737 /* Set the frame properties/side data. Only done for the second field in
1738 * field coded frames, since some SEI information is present for each field
1739 * and is merged by the SEI parsing code. */
1740 if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1741 ret = h264_export_frame_props(h);
1745 ret = h264_select_output_frame(h);
1753 static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1754 const H2645NAL *nal)
1759 unsigned int slice_type, tmp, i;
1760 int field_pic_flag, bottom_field_flag;
1761 int first_slice = sl == h->slice_ctx && !h->current_slice;
1762 int picture_structure;
1765 av_assert0(!h->setup_finished);
1767 sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1769 slice_type = get_ue_golomb_31(&sl->gb);
1770 if (slice_type > 9) {
1771 av_log(h->avctx, AV_LOG_ERROR,
1772 "slice type %d too large at %d\n",
1773 slice_type, sl->first_mb_addr);
1774 return AVERROR_INVALIDDATA;
1776 if (slice_type > 4) {
1778 sl->slice_type_fixed = 1;
1780 sl->slice_type_fixed = 0;
1782 slice_type = ff_h264_golomb_to_pict_type[slice_type];
1783 sl->slice_type = slice_type;
1784 sl->slice_type_nos = slice_type & 3;
1786 if (nal->type == H264_NAL_IDR_SLICE &&
1787 sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1788 av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1789 return AVERROR_INVALIDDATA;
1792 sl->pps_id = get_ue_golomb(&sl->gb);
1793 if (sl->pps_id >= MAX_PPS_COUNT) {
1794 av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1795 return AVERROR_INVALIDDATA;
1797 if (!h->ps.pps_list[sl->pps_id]) {
1798 av_log(h->avctx, AV_LOG_ERROR,
1799 "non-existing PPS %u referenced\n",
1801 return AVERROR_INVALIDDATA;
1803 pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1806 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1808 if (h->poc.frame_num != sl->frame_num) {
1809 av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1810 h->poc.frame_num, sl->frame_num);
1811 return AVERROR_INVALIDDATA;
1817 if (sps->frame_mbs_only_flag) {
1818 picture_structure = PICT_FRAME;
1820 if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1821 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1824 field_pic_flag = get_bits1(&sl->gb);
1825 if (field_pic_flag) {
1826 bottom_field_flag = get_bits1(&sl->gb);
1827 picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1829 picture_structure = PICT_FRAME;
1832 sl->picture_structure = picture_structure;
1833 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1835 if (picture_structure == PICT_FRAME) {
1836 sl->curr_pic_num = sl->frame_num;
1837 sl->max_pic_num = 1 << sps->log2_max_frame_num;
1839 sl->curr_pic_num = 2 * sl->frame_num + 1;
1840 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1843 if (nal->type == H264_NAL_IDR_SLICE)
1844 get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1846 if (sps->poc_type == 0) {
1847 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1849 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1850 sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1853 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1854 sl->delta_poc[0] = get_se_golomb(&sl->gb);
1856 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1857 sl->delta_poc[1] = get_se_golomb(&sl->gb);
1860 sl->redundant_pic_count = 0;
1861 if (pps->redundant_pic_cnt_present)
1862 sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1864 if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1865 sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1867 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
1868 &sl->gb, pps, sl->slice_type_nos,
1869 picture_structure, h->avctx);
1873 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1874 ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx);
1876 sl->ref_count[1] = sl->ref_count[0] = 0;
1881 sl->pwt.use_weight = 0;
1882 for (i = 0; i < 2; i++) {
1883 sl->pwt.luma_weight_flag[i] = 0;
1884 sl->pwt.chroma_weight_flag[i] = 0;
1886 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1887 (pps->weighted_bipred_idc == 1 &&
1888 sl->slice_type_nos == AV_PICTURE_TYPE_B)) {
1889 ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1890 sl->slice_type_nos, &sl->pwt,
1891 picture_structure, h->avctx);
1896 sl->explicit_ref_marking = 0;
1898 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1899 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1900 return AVERROR_INVALIDDATA;
1903 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1904 tmp = get_ue_golomb_31(&sl->gb);
1906 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1907 return AVERROR_INVALIDDATA;
1909 sl->cabac_init_idc = tmp;
1912 sl->last_qscale_diff = 0;
1913 tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1914 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1915 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1916 return AVERROR_INVALIDDATA;
1919 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1920 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1921 // FIXME qscale / qp ... stuff
1922 if (sl->slice_type == AV_PICTURE_TYPE_SP)
1923 get_bits1(&sl->gb); /* sp_for_switch_flag */
1924 if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1925 sl->slice_type == AV_PICTURE_TYPE_SI)
1926 get_se_golomb(&sl->gb); /* slice_qs_delta */
1928 sl->deblocking_filter = 1;
1929 sl->slice_alpha_c0_offset = 0;
1930 sl->slice_beta_offset = 0;
1931 if (pps->deblocking_filter_parameters_present) {
1932 tmp = get_ue_golomb_31(&sl->gb);
1934 av_log(h->avctx, AV_LOG_ERROR,
1935 "deblocking_filter_idc %u out of range\n", tmp);
1936 return AVERROR_INVALIDDATA;
1938 sl->deblocking_filter = tmp;
1939 if (sl->deblocking_filter < 2)
1940 sl->deblocking_filter ^= 1; // 1<->0
1942 if (sl->deblocking_filter) {
1943 int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1944 int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1945 if (slice_alpha_c0_offset_div2 > 6 ||
1946 slice_alpha_c0_offset_div2 < -6 ||
1947 slice_beta_offset_div2 > 6 ||
1948 slice_beta_offset_div2 < -6) {
1949 av_log(h->avctx, AV_LOG_ERROR,
1950 "deblocking filter parameters %d %d out of range\n",
1951 slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1952 return AVERROR_INVALIDDATA;
1954 sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1955 sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1962 /* do all the per-slice initialization needed before we can start decoding the
1964 static int h264_slice_init(H264Context *h, H264SliceContext *sl,
1965 const H2645NAL *nal)
1969 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1970 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1971 return AVERROR_INVALIDDATA;
1974 av_assert1(h->mb_num == h->mb_width * h->mb_height);
1975 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1976 sl->first_mb_addr >= h->mb_num) {
1977 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1978 return AVERROR_INVALIDDATA;
1980 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1981 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1982 FIELD_OR_MBAFF_PICTURE(h);
1983 if (h->picture_structure == PICT_BOTTOM_FIELD)
1984 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1985 av_assert1(sl->mb_y < h->mb_height);
1987 ret = ff_h264_build_ref_list(h, sl);
1991 if (h->ps.pps->weighted_bipred_idc == 2 &&
1992 sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1993 implicit_weight_table(h, sl, -1);
1994 if (FRAME_MBAFF(h)) {
1995 implicit_weight_table(h, sl, 0);
1996 implicit_weight_table(h, sl, 1);
2000 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
2001 ff_h264_direct_dist_scale_factor(h, sl);
2002 if (!h->setup_finished)
2003 ff_h264_direct_ref_list_init(h, sl);
2005 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
2006 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
2007 h->nal_unit_type != H264_NAL_IDR_SLICE) ||
2008 (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA &&
2009 sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2010 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
2011 sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2012 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
2014 sl->deblocking_filter = 0;
2016 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
2017 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
2018 /* Cheat slightly for speed:
2019 * Do not bother to deblock across slices. */
2020 sl->deblocking_filter = 2;
2022 h->postpone_filter = 1;
2025 sl->qp_thresh = 15 -
2026 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
2028 h->ps.pps->chroma_qp_index_offset[0],
2029 h->ps.pps->chroma_qp_index_offset[1]) +
2030 6 * (h->ps.sps->bit_depth_luma - 8);
2032 sl->slice_num = ++h->current_slice;
2035 h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
2036 if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
2037 && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
2038 && sl->slice_num >= MAX_SLICES) {
2039 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
2040 av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", sl->slice_num, MAX_SLICES);
2043 for (j = 0; j < 2; j++) {
2045 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
2046 for (i = 0; i < 16; i++) {
2048 if (j < sl->list_count && i < sl->ref_count[j] &&
2049 sl->ref_list[j][i].parent->f->buf[0]) {
2051 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
2052 for (k = 0; k < h->short_ref_count; k++)
2053 if (h->short_ref[k]->f->buf[0]->buffer == buf) {
2057 for (k = 0; k < h->long_ref_count; k++)
2058 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
2059 id_list[i] = h->short_ref_count + k;
2067 for (i = 0; i < 16; i++)
2068 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
2070 ref2frm[18 + 1] = -1;
2071 for (i = 16; i < 48; i++)
2072 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
2073 (sl->ref_list[j][i].reference & 3);
2076 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
2077 av_log(h->avctx, AV_LOG_DEBUG,
2078 "slice:%d %s mb:%d %c%s%s frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
2080 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2081 sl->mb_y * h->mb_width + sl->mb_x,
2082 av_get_picture_type_char(sl->slice_type),
2083 sl->slice_type_fixed ? " fix" : "",
2084 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2086 h->cur_pic_ptr->field_poc[0],
2087 h->cur_pic_ptr->field_poc[1],
2088 sl->ref_count[0], sl->ref_count[1],
2090 sl->deblocking_filter,
2091 sl->slice_alpha_c0_offset, sl->slice_beta_offset,
2093 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2094 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2100 int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
2102 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
2103 int first_slice = sl == h->slice_ctx && !h->current_slice;
2108 ret = h264_slice_header_parse(h, sl, nal);
2112 // discard redundant pictures
2113 if (sl->redundant_pic_count > 0) {
2114 sl->ref_count[0] = sl->ref_count[1] = 0;
2118 if (sl->first_mb_addr == 0 || !h->current_slice) {
2119 if (h->setup_finished) {
2120 av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2121 return AVERROR_INVALIDDATA;
2125 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2126 if (h->current_slice) {
2127 // this slice starts a new field
2128 // first decode any pending queued slices
2129 if (h->nb_slice_ctx_queued) {
2130 H264SliceContext tmp_ctx;
2132 ret = ff_h264_execute_decode_slices(h);
2133 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2136 memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2137 memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2138 memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2142 if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2143 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2146 } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2147 av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2148 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2149 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2150 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2151 h->cur_pic_ptr = NULL;
2155 return AVERROR_INVALIDDATA;
2158 if (!h->first_field) {
2159 if (h->cur_pic_ptr && !h->droppable) {
2160 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2161 h->picture_structure == PICT_BOTTOM_FIELD);
2163 h->cur_pic_ptr = NULL;
2167 if (!h->current_slice)
2168 av_assert0(sl == h->slice_ctx);
2170 if (h->current_slice == 0 && !h->first_field) {
2172 (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2173 (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2174 (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2175 (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) ||
2176 h->avctx->skip_frame >= AVDISCARD_ALL) {
2182 const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2184 if (h->ps.pps->sps_id != pps->sps_id ||
2185 h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2186 (h->setup_finished && h->ps.pps != pps)*/) {
2187 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2188 return AVERROR_INVALIDDATA;
2190 if (h->ps.sps != pps->sps) {
2191 av_log(h->avctx, AV_LOG_ERROR,
2192 "SPS changed in the middle of the frame\n");
2193 return AVERROR_INVALIDDATA;
2197 if (h->current_slice == 0) {
2198 ret = h264_field_start(h, sl, nal, first_slice);
2202 if (h->picture_structure != sl->picture_structure ||
2203 h->droppable != (nal->ref_idc == 0)) {
2204 av_log(h->avctx, AV_LOG_ERROR,
2205 "Changing field mode (%d -> %d) between slices is not allowed\n",
2206 h->picture_structure, sl->picture_structure);
2207 return AVERROR_INVALIDDATA;
2208 } else if (!h->cur_pic_ptr) {
2209 av_log(h->avctx, AV_LOG_ERROR,
2210 "unset cur_pic_ptr on slice %d\n",
2211 h->current_slice + 1);
2212 return AVERROR_INVALIDDATA;
2216 ret = h264_slice_init(h, sl, nal);
2220 h->nb_slice_ctx_queued++;
2225 int ff_h264_get_slice_type(const H264SliceContext *sl)
2227 switch (sl->slice_type) {
2228 case AV_PICTURE_TYPE_P:
2230 case AV_PICTURE_TYPE_B:
2232 case AV_PICTURE_TYPE_I:
2234 case AV_PICTURE_TYPE_SP:
2236 case AV_PICTURE_TYPE_SI:
2239 return AVERROR_INVALIDDATA;
2243 static av_always_inline void fill_filter_caches_inter(const H264Context *h,
2244 H264SliceContext *sl,
2245 int mb_type, int top_xy,
2246 int left_xy[LEFT_MBS],
2248 int left_type[LEFT_MBS],
2249 int mb_xy, int list)
2251 int b_stride = h->b_stride;
2252 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2253 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2254 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2255 if (USES_LIST(top_type, list)) {
2256 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2257 const int b8_xy = 4 * top_xy + 2;
2258 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2259 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2260 ref_cache[0 - 1 * 8] =
2261 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2262 ref_cache[2 - 1 * 8] =
2263 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2265 AV_ZERO128(mv_dst - 1 * 8);
2266 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2269 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2270 if (USES_LIST(left_type[LTOP], list)) {
2271 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2272 const int b8_xy = 4 * left_xy[LTOP] + 1;
2273 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2274 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2275 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2276 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2277 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2279 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2280 ref_cache[-1 + 16] =
2281 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2283 AV_ZERO32(mv_dst - 1 + 0);
2284 AV_ZERO32(mv_dst - 1 + 8);
2285 AV_ZERO32(mv_dst - 1 + 16);
2286 AV_ZERO32(mv_dst - 1 + 24);
2289 ref_cache[-1 + 16] =
2290 ref_cache[-1 + 24] = LIST_NOT_USED;
2295 if (!USES_LIST(mb_type, list)) {
2296 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2297 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2298 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2299 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2300 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2305 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2306 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2307 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2308 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2309 AV_WN32A(&ref_cache[0 * 8], ref01);
2310 AV_WN32A(&ref_cache[1 * 8], ref01);
2311 AV_WN32A(&ref_cache[2 * 8], ref23);
2312 AV_WN32A(&ref_cache[3 * 8], ref23);
2316 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2317 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2318 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2319 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2320 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2325 * @return non zero if the loop filter can be skipped
2327 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2329 const int mb_xy = sl->mb_xy;
2330 int top_xy, left_xy[LEFT_MBS];
2331 int top_type, left_type[LEFT_MBS];
2335 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2337 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2338 if (FRAME_MBAFF(h)) {
2339 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2340 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2342 if (left_mb_field_flag != curr_mb_field_flag)
2343 left_xy[LTOP] -= h->mb_stride;
2345 if (curr_mb_field_flag)
2346 top_xy += h->mb_stride &
2347 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2348 if (left_mb_field_flag != curr_mb_field_flag)
2349 left_xy[LBOT] += h->mb_stride;
2353 sl->top_mb_xy = top_xy;
2354 sl->left_mb_xy[LTOP] = left_xy[LTOP];
2355 sl->left_mb_xy[LBOT] = left_xy[LBOT];
2357 /* For sufficiently low qp, filtering wouldn't do anything.
2358 * This is a conservative estimate: could also check beta_offset
2359 * and more accurate chroma_qp. */
2360 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2361 int qp = h->cur_pic.qscale_table[mb_xy];
2362 if (qp <= qp_thresh &&
2363 (left_xy[LTOP] < 0 ||
2364 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2366 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2367 if (!FRAME_MBAFF(h))
2369 if ((left_xy[LTOP] < 0 ||
2370 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2371 (top_xy < h->mb_stride ||
2372 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2377 top_type = h->cur_pic.mb_type[top_xy];
2378 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2379 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2380 if (sl->deblocking_filter == 2) {
2381 if (h->slice_table[top_xy] != sl->slice_num)
2383 if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2384 left_type[LTOP] = left_type[LBOT] = 0;
2386 if (h->slice_table[top_xy] == 0xFFFF)
2388 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2389 left_type[LTOP] = left_type[LBOT] = 0;
2391 sl->top_type = top_type;
2392 sl->left_type[LTOP] = left_type[LTOP];
2393 sl->left_type[LBOT] = left_type[LBOT];
2395 if (IS_INTRA(mb_type))
2398 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2399 top_type, left_type, mb_xy, 0);
2400 if (sl->list_count == 2)
2401 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2402 top_type, left_type, mb_xy, 1);
2404 nnz = h->non_zero_count[mb_xy];
2405 nnz_cache = sl->non_zero_count_cache;
2406 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2407 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2408 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2409 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2410 sl->cbp = h->cbp_table[mb_xy];
2413 nnz = h->non_zero_count[top_xy];
2414 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2417 if (left_type[LTOP]) {
2418 nnz = h->non_zero_count[left_xy[LTOP]];
2419 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2420 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2421 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2422 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2425 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2426 * from what the loop filter needs */
2427 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2428 if (IS_8x8DCT(top_type)) {
2429 nnz_cache[4 + 8 * 0] =
2430 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2431 nnz_cache[6 + 8 * 0] =
2432 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2434 if (IS_8x8DCT(left_type[LTOP])) {
2435 nnz_cache[3 + 8 * 1] =
2436 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2438 if (IS_8x8DCT(left_type[LBOT])) {
2439 nnz_cache[3 + 8 * 3] =
2440 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2443 if (IS_8x8DCT(mb_type)) {
2444 nnz_cache[scan8[0]] =
2445 nnz_cache[scan8[1]] =
2446 nnz_cache[scan8[2]] =
2447 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2449 nnz_cache[scan8[0 + 4]] =
2450 nnz_cache[scan8[1 + 4]] =
2451 nnz_cache[scan8[2 + 4]] =
2452 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2454 nnz_cache[scan8[0 + 8]] =
2455 nnz_cache[scan8[1 + 8]] =
2456 nnz_cache[scan8[2 + 8]] =
2457 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2459 nnz_cache[scan8[0 + 12]] =
2460 nnz_cache[scan8[1 + 12]] =
2461 nnz_cache[scan8[2 + 12]] =
2462 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2469 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2471 uint8_t *dest_y, *dest_cb, *dest_cr;
2472 int linesize, uvlinesize, mb_x, mb_y;
2473 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2474 const int old_slice_type = sl->slice_type;
2475 const int pixel_shift = h->pixel_shift;
2476 const int block_h = 16 >> h->chroma_y_shift;
2478 if (h->postpone_filter)
2481 if (sl->deblocking_filter) {
2482 for (mb_x = start_x; mb_x < end_x; mb_x++)
2483 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2485 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2486 mb_type = h->cur_pic.mb_type[mb_xy];
2490 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2494 dest_y = h->cur_pic.f->data[0] +
2495 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2496 dest_cb = h->cur_pic.f->data[1] +
2497 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2498 mb_y * sl->uvlinesize * block_h;
2499 dest_cr = h->cur_pic.f->data[2] +
2500 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2501 mb_y * sl->uvlinesize * block_h;
2502 // FIXME simplify above
2505 linesize = sl->mb_linesize = sl->linesize * 2;
2506 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2507 if (mb_y & 1) { // FIXME move out of this function?
2508 dest_y -= sl->linesize * 15;
2509 dest_cb -= sl->uvlinesize * (block_h - 1);
2510 dest_cr -= sl->uvlinesize * (block_h - 1);
2513 linesize = sl->mb_linesize = sl->linesize;
2514 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2516 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2518 if (fill_filter_caches(h, sl, mb_type))
2520 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2521 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2523 if (FRAME_MBAFF(h)) {
2524 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2525 linesize, uvlinesize);
2527 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2528 dest_cr, linesize, uvlinesize);
2532 sl->slice_type = old_slice_type;
2534 sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2535 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2536 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2539 static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
2541 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2542 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2543 h->cur_pic.mb_type[mb_xy - 1] :
2544 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2545 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2546 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2550 * Draw edges and report progress for the last MB row.
2552 static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
2554 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2555 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2556 int height = 16 << FRAME_MBAFF(h);
2557 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2559 if (sl->deblocking_filter) {
2560 if ((top + height) >= pic_height)
2561 height += deblock_border;
2562 top -= deblock_border;
2565 if (top >= pic_height || (top + height) < 0)
2568 height = FFMIN(height, pic_height - top);
2570 height = top + height;
2574 ff_h264_draw_horiz_band(h, sl, top, height);
2576 if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2579 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2580 h->picture_structure == PICT_BOTTOM_FIELD);
2583 static void er_add_slice(H264SliceContext *sl,
2584 int startx, int starty,
2585 int endx, int endy, int status)
2587 if (!sl->h264->enable_er)
2590 if (CONFIG_ERROR_RESILIENCE) {
2591 ERContext *er = &sl->h264->slice_ctx[0].er;
2593 ff_er_add_slice(er, startx, starty, endx, endy, status);
2597 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2599 H264SliceContext *sl = arg;
2600 const H264Context *h = sl->h264;
2601 int lf_x_start = sl->mb_x;
2602 int orig_deblock = sl->deblocking_filter;
2605 sl->linesize = h->cur_pic_ptr->f->linesize[0];
2606 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2608 ret = alloc_scratch_buffers(sl, sl->linesize);
2612 sl->mb_skip_run = -1;
2614 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2616 if (h->postpone_filter)
2617 sl->deblocking_filter = 0;
2619 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2620 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2622 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
2623 const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2625 int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2626 prev_status &= ~ VP_START;
2627 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2628 h->slice_ctx[0].er.error_occurred = 1;
2632 if (h->ps.pps->cabac) {
2634 align_get_bits(&sl->gb);
2637 ret = ff_init_cabac_decoder(&sl->cabac,
2638 sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2639 (get_bits_left(&sl->gb) + 7) / 8);
2643 ff_h264_init_cabac_states(h, sl);
2647 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2648 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2649 sl->next_slice_idx);
2650 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2651 sl->mb_y, ER_MB_ERROR);
2652 return AVERROR_INVALIDDATA;
2655 ret = ff_h264_decode_mb_cabac(h, sl);
2658 ff_h264_hl_decode_mb(h, sl);
2660 // FIXME optimal? or let mb_decode decode 16x32 ?
2661 if (ret >= 0 && FRAME_MBAFF(h)) {
2664 ret = ff_h264_decode_mb_cabac(h, sl);
2667 ff_h264_hl_decode_mb(h, sl);
2670 eos = get_cabac_terminate(&sl->cabac);
2672 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2673 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2674 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2675 sl->mb_y, ER_MB_END);
2676 if (sl->mb_x >= lf_x_start)
2677 loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2680 if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2681 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2682 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2683 av_log(h->avctx, AV_LOG_ERROR,
2684 "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2686 sl->cabac.bytestream_end - sl->cabac.bytestream);
2687 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2688 sl->mb_y, ER_MB_ERROR);
2689 return AVERROR_INVALIDDATA;
2692 if (++sl->mb_x >= h->mb_width) {
2693 loop_filter(h, sl, lf_x_start, sl->mb_x);
2694 sl->mb_x = lf_x_start = 0;
2695 decode_finish_row(h, sl);
2697 if (FIELD_OR_MBAFF_PICTURE(h)) {
2699 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2700 predict_field_decoding_flag(h, sl);
2704 if (eos || sl->mb_y >= h->mb_height) {
2705 ff_tlog(h->avctx, "slice end %d %d\n",
2706 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2707 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2708 sl->mb_y, ER_MB_END);
2709 if (sl->mb_x > lf_x_start)
2710 loop_filter(h, sl, lf_x_start, sl->mb_x);
2718 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2719 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2720 sl->next_slice_idx);
2721 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2722 sl->mb_y, ER_MB_ERROR);
2723 return AVERROR_INVALIDDATA;
2726 ret = ff_h264_decode_mb_cavlc(h, sl);
2729 ff_h264_hl_decode_mb(h, sl);
2731 // FIXME optimal? or let mb_decode decode 16x32 ?
2732 if (ret >= 0 && FRAME_MBAFF(h)) {
2734 ret = ff_h264_decode_mb_cavlc(h, sl);
2737 ff_h264_hl_decode_mb(h, sl);
2742 av_log(h->avctx, AV_LOG_ERROR,
2743 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2744 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2745 sl->mb_y, ER_MB_ERROR);
2749 if (++sl->mb_x >= h->mb_width) {
2750 loop_filter(h, sl, lf_x_start, sl->mb_x);
2751 sl->mb_x = lf_x_start = 0;
2752 decode_finish_row(h, sl);
2754 if (FIELD_OR_MBAFF_PICTURE(h)) {
2756 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2757 predict_field_decoding_flag(h, sl);
2759 if (sl->mb_y >= h->mb_height) {
2760 ff_tlog(h->avctx, "slice end %d %d\n",
2761 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2763 if ( get_bits_left(&sl->gb) == 0
2764 || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2765 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2766 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2770 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2771 sl->mb_x, sl->mb_y, ER_MB_END);
2773 return AVERROR_INVALIDDATA;
2778 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2779 ff_tlog(h->avctx, "slice end %d %d\n",
2780 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2782 if (get_bits_left(&sl->gb) == 0) {
2783 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2784 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2785 if (sl->mb_x > lf_x_start)
2786 loop_filter(h, sl, lf_x_start, sl->mb_x);
2790 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2791 sl->mb_y, ER_MB_ERROR);
2793 return AVERROR_INVALIDDATA;
2800 sl->deblocking_filter = orig_deblock;
2805 * Call decode_slice() for each context.
2807 * @param h h264 master context
2809 int ff_h264_execute_decode_slices(H264Context *h)
2811 AVCodecContext *const avctx = h->avctx;
2812 H264SliceContext *sl;
2813 int context_count = h->nb_slice_ctx_queued;
2817 h->slice_ctx[0].next_slice_idx = INT_MAX;
2819 if (h->avctx->hwaccel || context_count < 1)
2822 av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2824 if (context_count == 1) {
2826 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2827 h->postpone_filter = 0;
2829 ret = decode_slice(avctx, &h->slice_ctx[0]);
2830 h->mb_y = h->slice_ctx[0].mb_y;
2834 av_assert0(context_count > 0);
2835 for (i = 0; i < context_count; i++) {
2836 int next_slice_idx = h->mb_width * h->mb_height;
2839 sl = &h->slice_ctx[i];
2840 if (CONFIG_ERROR_RESILIENCE) {
2841 sl->er.error_count = 0;
2844 /* make sure none of those slices overlap */
2845 slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2846 for (j = 0; j < context_count; j++) {
2847 H264SliceContext *sl2 = &h->slice_ctx[j];
2848 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2850 if (i == j || slice_idx2 < slice_idx)
2852 next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2854 sl->next_slice_idx = next_slice_idx;
2857 avctx->execute(avctx, decode_slice, h->slice_ctx,
2858 NULL, context_count, sizeof(h->slice_ctx[0]));
2860 /* pull back stuff from slices to master context */
2861 sl = &h->slice_ctx[context_count - 1];
2863 if (CONFIG_ERROR_RESILIENCE) {
2864 for (i = 1; i < context_count; i++)
2865 h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
2868 if (h->postpone_filter) {
2869 h->postpone_filter = 0;
2871 for (i = 0; i < context_count; i++) {
2874 sl = &h->slice_ctx[i];
2875 y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2876 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2878 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2880 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2881 j == y_end - 1 ? x_end : h->mb_width);
2888 h->nb_slice_ctx_queued = 0;