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"
32 #include "libavutil/timer.h"
35 #include "cabac_functions.h"
36 #include "error_resilience.h"
41 #include "h264chroma.h"
42 #include "h264_mvpred.h"
46 #include "mpegutils.h"
47 #include "mpegvideo.h"
48 #include "rectangle.h"
51 static const uint8_t field_scan[16+1] = {
52 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
53 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
54 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
55 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
58 static const uint8_t field_scan8x8[64+1] = {
59 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
60 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
61 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
62 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
63 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
64 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
65 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
66 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
67 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
68 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
69 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
70 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
71 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
72 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
73 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
74 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
77 static const uint8_t field_scan8x8_cavlc[64+1] = {
78 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
79 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
80 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
81 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
82 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
83 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
84 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
85 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
86 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
87 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
88 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
89 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
90 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
91 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
92 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
93 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
96 // zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
97 static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
98 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
99 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
100 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
101 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
102 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
103 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
104 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
105 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
106 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
107 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
108 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
109 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
110 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
111 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
112 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
113 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
116 static void release_unused_pictures(H264Context *h, int remove_current)
120 /* release non reference frames */
121 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
122 if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
123 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
124 ff_h264_unref_picture(h, &h->DPB[i]);
129 static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
131 const H264Context *h = sl->h264;
132 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
134 av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
135 // edge emu needs blocksize + filter length - 1
136 // (= 21x21 for H.264)
137 av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
139 av_fast_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0],
140 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
141 av_fast_mallocz(&sl->top_borders[1], &sl->top_borders_allocated[1],
142 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
144 if (!sl->bipred_scratchpad || !sl->edge_emu_buffer ||
145 !sl->top_borders[0] || !sl->top_borders[1]) {
146 av_freep(&sl->bipred_scratchpad);
147 av_freep(&sl->edge_emu_buffer);
148 av_freep(&sl->top_borders[0]);
149 av_freep(&sl->top_borders[1]);
151 sl->bipred_scratchpad_allocated = 0;
152 sl->edge_emu_buffer_allocated = 0;
153 sl->top_borders_allocated[0] = 0;
154 sl->top_borders_allocated[1] = 0;
155 return AVERROR(ENOMEM);
161 static int init_table_pools(H264Context *h)
163 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
164 const int mb_array_size = h->mb_stride * h->mb_height;
165 const int b4_stride = h->mb_width * 4 + 1;
166 const int b4_array_size = b4_stride * h->mb_height * 4;
168 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
170 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
171 sizeof(uint32_t), av_buffer_allocz);
172 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
173 sizeof(int16_t), av_buffer_allocz);
174 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
176 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
177 !h->ref_index_pool) {
178 av_buffer_pool_uninit(&h->qscale_table_pool);
179 av_buffer_pool_uninit(&h->mb_type_pool);
180 av_buffer_pool_uninit(&h->motion_val_pool);
181 av_buffer_pool_uninit(&h->ref_index_pool);
182 return AVERROR(ENOMEM);
188 static int alloc_picture(H264Context *h, H264Picture *pic)
192 av_assert0(!pic->f->data[0]);
195 ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
196 AV_GET_BUFFER_FLAG_REF : 0);
200 if (h->avctx->hwaccel) {
201 const AVHWAccel *hwaccel = h->avctx->hwaccel;
202 av_assert0(!pic->hwaccel_picture_private);
203 if (hwaccel->frame_priv_data_size) {
204 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
205 if (!pic->hwaccel_priv_buf)
206 return AVERROR(ENOMEM);
207 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
210 if (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) {
211 int h_chroma_shift, v_chroma_shift;
212 av_pix_fmt_get_chroma_sub_sample(pic->f->format,
213 &h_chroma_shift, &v_chroma_shift);
215 for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) {
216 memset(pic->f->data[1] + pic->f->linesize[1]*i,
217 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
218 memset(pic->f->data[2] + pic->f->linesize[2]*i,
219 0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
223 if (!h->qscale_table_pool) {
224 ret = init_table_pools(h);
229 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
230 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
231 if (!pic->qscale_table_buf || !pic->mb_type_buf)
234 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
235 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
237 for (i = 0; i < 2; i++) {
238 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
239 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
240 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
243 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
244 pic->ref_index[i] = pic->ref_index_buf[i]->data;
249 ff_h264_unref_picture(h, pic);
250 return (ret < 0) ? ret : AVERROR(ENOMEM);
253 static int find_unused_picture(H264Context *h)
257 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
258 if (!h->DPB[i].f->buf[0])
261 return AVERROR_INVALIDDATA;
265 #define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((b) + (size))))
267 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
268 (((pic) && (pic) >= (old_ctx)->DPB && \
269 (pic) < (old_ctx)->DPB + H264_MAX_PICTURE_COUNT) ? \
270 &(new_ctx)->DPB[(pic) - (old_ctx)->DPB] : NULL)
272 static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
273 H264Context *new_base,
274 H264Context *old_base)
278 for (i = 0; i < count; i++) {
279 av_assert1(!from[i] ||
280 IN_RANGE(from[i], old_base, 1) ||
281 IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT));
282 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
286 static int h264_slice_header_init(H264Context *h);
288 int ff_h264_update_thread_context(AVCodecContext *dst,
289 const AVCodecContext *src)
291 H264Context *h = dst->priv_data, *h1 = src->priv_data;
292 int inited = h->context_initialized, err = 0;
299 // We can't fail if SPS isn't set at it breaks current skip_frame code
301 // return AVERROR_INVALIDDATA;
304 (h->width != h1->width ||
305 h->height != h1->height ||
306 h->mb_width != h1->mb_width ||
307 h->mb_height != h1->mb_height ||
309 h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
310 h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
311 h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
315 /* copy block_offset since frame_start may not be called */
316 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
319 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
320 av_buffer_unref(&h->ps.sps_list[i]);
321 if (h1->ps.sps_list[i]) {
322 h->ps.sps_list[i] = av_buffer_ref(h1->ps.sps_list[i]);
323 if (!h->ps.sps_list[i])
324 return AVERROR(ENOMEM);
327 for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
328 av_buffer_unref(&h->ps.pps_list[i]);
329 if (h1->ps.pps_list[i]) {
330 h->ps.pps_list[i] = av_buffer_ref(h1->ps.pps_list[i]);
331 if (!h->ps.pps_list[i])
332 return AVERROR(ENOMEM);
336 av_buffer_unref(&h->ps.pps_ref);
337 av_buffer_unref(&h->ps.sps_ref);
340 if (h1->ps.pps_ref) {
341 h->ps.pps_ref = av_buffer_ref(h1->ps.pps_ref);
343 return AVERROR(ENOMEM);
344 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
346 if (h1->ps.sps_ref) {
347 h->ps.sps_ref = av_buffer_ref(h1->ps.sps_ref);
349 return AVERROR(ENOMEM);
350 h->ps.sps = (const SPS*)h->ps.sps_ref->data;
353 if (need_reinit || !inited) {
354 h->width = h1->width;
355 h->height = h1->height;
356 h->mb_height = h1->mb_height;
357 h->mb_width = h1->mb_width;
358 h->mb_num = h1->mb_num;
359 h->mb_stride = h1->mb_stride;
360 h->b_stride = h1->b_stride;
362 if (h->context_initialized || h1->context_initialized) {
363 if ((err = h264_slice_header_init(h)) < 0) {
364 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
369 /* copy block_offset since frame_start may not be called */
370 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
373 h->avctx->coded_height = h1->avctx->coded_height;
374 h->avctx->coded_width = h1->avctx->coded_width;
375 h->avctx->width = h1->avctx->width;
376 h->avctx->height = h1->avctx->height;
377 h->width_from_caller = h1->width_from_caller;
378 h->height_from_caller = h1->height_from_caller;
379 h->coded_picture_number = h1->coded_picture_number;
380 h->first_field = h1->first_field;
381 h->picture_structure = h1->picture_structure;
382 h->mb_aff_frame = h1->mb_aff_frame;
383 h->droppable = h1->droppable;
385 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
386 ff_h264_unref_picture(h, &h->DPB[i]);
387 if (h1->DPB[i].f->buf[0] &&
388 (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
392 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
393 ff_h264_unref_picture(h, &h->cur_pic);
394 if (h1->cur_pic.f->buf[0]) {
395 ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
400 h->enable_er = h1->enable_er;
401 h->workaround_bugs = h1->workaround_bugs;
402 h->droppable = h1->droppable;
404 // extradata/NAL handling
405 h->is_avc = h1->is_avc;
406 h->nal_length_size = h1->nal_length_size;
407 h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build;
409 memcpy(&h->poc, &h1->poc, sizeof(h->poc));
411 memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
412 memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
413 memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
414 memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
416 h->next_output_pic = h1->next_output_pic;
417 h->next_outputed_poc = h1->next_outputed_poc;
419 memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
420 h->nb_mmco = h1->nb_mmco;
421 h->mmco_reset = h1->mmco_reset;
422 h->explicit_ref_marking = h1->explicit_ref_marking;
423 h->long_ref_count = h1->long_ref_count;
424 h->short_ref_count = h1->short_ref_count;
426 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
427 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
428 copy_picture_range(h->delayed_pic, h1->delayed_pic,
429 MAX_DELAYED_PIC_COUNT + 2, h, h1);
431 h->frame_recovered = h1->frame_recovered;
437 err = ff_h264_execute_ref_pic_marking(h);
438 h->poc.prev_poc_msb = h->poc.poc_msb;
439 h->poc.prev_poc_lsb = h->poc.poc_lsb;
441 h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
442 h->poc.prev_frame_num = h->poc.frame_num;
444 h->recovery_frame = h1->recovery_frame;
449 static int h264_frame_start(H264Context *h)
453 const int pixel_shift = h->pixel_shift;
455 1<<(h->ps.sps->bit_depth_luma-1),
456 1<<(h->ps.sps->bit_depth_chroma-1),
457 1<<(h->ps.sps->bit_depth_chroma-1),
461 if (!ff_thread_can_start_frame(h->avctx)) {
462 av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
466 release_unused_pictures(h, 1);
467 h->cur_pic_ptr = NULL;
469 i = find_unused_picture(h);
471 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
476 pic->reference = h->droppable ? 0 : h->picture_structure;
477 pic->f->coded_picture_number = h->coded_picture_number++;
478 pic->field_picture = h->picture_structure != PICT_FRAME;
479 pic->frame_num = h->poc.frame_num;
481 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
483 * See decode_nal_units().
485 pic->f->key_frame = 0;
488 pic->invalid_gap = 0;
489 pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
491 pic->f->pict_type = h->slice_ctx[0].slice_type;
493 pic->f->crop_left = h->crop_left;
494 pic->f->crop_right = h->crop_right;
495 pic->f->crop_top = h->crop_top;
496 pic->f->crop_bottom = h->crop_bottom;
498 if ((ret = alloc_picture(h, pic)) < 0)
500 if(!h->frame_recovered && !h->avctx->hwaccel
502 && !(h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU)
505 ff_color_frame(pic->f, c);
507 h->cur_pic_ptr = pic;
508 ff_h264_unref_picture(h, &h->cur_pic);
509 if (CONFIG_ERROR_RESILIENCE) {
510 ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
513 if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
516 for (i = 0; i < h->nb_slice_ctx; i++) {
517 h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
518 h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
521 if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
522 ff_er_frame_start(&h->slice_ctx[0].er);
523 ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
524 ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
527 for (i = 0; i < 16; i++) {
528 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
529 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
531 for (i = 0; i < 16; i++) {
532 h->block_offset[16 + i] =
533 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
534 h->block_offset[48 + 16 + i] =
535 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
538 /* We mark the current picture as non-reference after allocating it, so
539 * that if we break out due to an error it can be released automatically
540 * in the next ff_mpv_frame_start().
542 h->cur_pic_ptr->reference = 0;
544 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
546 h->next_output_pic = NULL;
548 h->postpone_filter = 0;
550 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
552 assert(h->cur_pic_ptr->long_ref == 0);
557 static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
559 uint8_t *src_cb, uint8_t *src_cr,
560 int linesize, int uvlinesize,
565 const int pixel_shift = h->pixel_shift;
566 int chroma444 = CHROMA444(h);
567 int chroma422 = CHROMA422(h);
570 src_cb -= uvlinesize;
571 src_cr -= uvlinesize;
573 if (!simple && FRAME_MBAFF(h)) {
576 top_border = sl->top_borders[0][sl->mb_x];
577 AV_COPY128(top_border, src_y + 15 * linesize);
579 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
580 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
583 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
584 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
585 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
586 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
588 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
589 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
591 } else if (chroma422) {
593 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
594 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
596 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
597 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
601 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
602 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
604 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
605 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
610 } else if (MB_MBAFF(sl)) {
616 top_border = sl->top_borders[top_idx][sl->mb_x];
617 /* There are two lines saved, the line above the top macroblock
618 * of a pair, and the line above the bottom macroblock. */
619 AV_COPY128(top_border, src_y + 16 * linesize);
621 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
623 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
626 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
627 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
628 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
629 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
631 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
632 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
634 } else if (chroma422) {
636 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
637 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
639 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
640 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
644 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
645 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
647 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
648 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
655 * Initialize implicit_weight table.
656 * @param field 0/1 initialize the weight for interlaced MBAFF
657 * -1 initializes the rest
659 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
661 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
663 for (i = 0; i < 2; i++) {
664 sl->pwt.luma_weight_flag[i] = 0;
665 sl->pwt.chroma_weight_flag[i] = 0;
669 if (h->picture_structure == PICT_FRAME) {
670 cur_poc = h->cur_pic_ptr->poc;
672 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
674 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
675 sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2 * cur_poc) {
676 sl->pwt.use_weight = 0;
677 sl->pwt.use_weight_chroma = 0;
681 ref_count0 = sl->ref_count[0];
682 ref_count1 = sl->ref_count[1];
684 cur_poc = h->cur_pic_ptr->field_poc[field];
686 ref_count0 = 16 + 2 * sl->ref_count[0];
687 ref_count1 = 16 + 2 * sl->ref_count[1];
690 sl->pwt.use_weight = 2;
691 sl->pwt.use_weight_chroma = 2;
692 sl->pwt.luma_log2_weight_denom = 5;
693 sl->pwt.chroma_log2_weight_denom = 5;
695 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
696 int64_t poc0 = sl->ref_list[0][ref0].poc;
697 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
699 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
700 int poc1 = sl->ref_list[1][ref1].poc;
701 int td = av_clip_int8(poc1 - poc0);
703 int tb = av_clip_int8(cur_poc - poc0);
704 int tx = (16384 + (FFABS(td) >> 1)) / td;
705 int dist_scale_factor = (tb * tx + 32) >> 8;
706 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
707 w = 64 - dist_scale_factor;
711 sl->pwt.implicit_weight[ref0][ref1][0] =
712 sl->pwt.implicit_weight[ref0][ref1][1] = w;
714 sl->pwt.implicit_weight[ref0][ref1][field] = w;
721 * initialize scan tables
723 static void init_scan_tables(H264Context *h)
726 for (i = 0; i < 16; i++) {
727 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
728 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
729 h->field_scan[i] = TRANSPOSE(field_scan[i]);
732 for (i = 0; i < 64; i++) {
733 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
734 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
735 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
736 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
737 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
740 if (h->ps.sps->transform_bypass) { // FIXME same ugly
741 memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
742 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
743 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
744 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
745 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
746 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
748 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
749 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
750 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
751 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
752 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
753 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
757 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
759 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
760 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
761 CONFIG_H264_VAAPI_HWACCEL + \
762 (CONFIG_H264_VDA_HWACCEL * 2) + \
763 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
764 CONFIG_H264_VDPAU_HWACCEL)
765 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
766 const enum AVPixelFormat *choices = pix_fmts;
769 switch (h->ps.sps->bit_depth_luma) {
772 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
773 *fmt++ = AV_PIX_FMT_GBRP9;
775 *fmt++ = AV_PIX_FMT_YUV444P9;
776 } else if (CHROMA422(h))
777 *fmt++ = AV_PIX_FMT_YUV422P9;
779 *fmt++ = AV_PIX_FMT_YUV420P9;
783 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
784 *fmt++ = AV_PIX_FMT_GBRP10;
786 *fmt++ = AV_PIX_FMT_YUV444P10;
787 } else if (CHROMA422(h))
788 *fmt++ = AV_PIX_FMT_YUV422P10;
790 *fmt++ = AV_PIX_FMT_YUV420P10;
794 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
795 *fmt++ = AV_PIX_FMT_GBRP12;
797 *fmt++ = AV_PIX_FMT_YUV444P12;
798 } else if (CHROMA422(h))
799 *fmt++ = AV_PIX_FMT_YUV422P12;
801 *fmt++ = AV_PIX_FMT_YUV420P12;
805 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
806 *fmt++ = AV_PIX_FMT_GBRP14;
808 *fmt++ = AV_PIX_FMT_YUV444P14;
809 } else if (CHROMA422(h))
810 *fmt++ = AV_PIX_FMT_YUV422P14;
812 *fmt++ = AV_PIX_FMT_YUV420P14;
815 #if CONFIG_H264_VDPAU_HWACCEL
816 *fmt++ = AV_PIX_FMT_VDPAU;
819 if (h->avctx->colorspace == AVCOL_SPC_RGB)
820 *fmt++ = AV_PIX_FMT_GBRP;
821 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
822 *fmt++ = AV_PIX_FMT_YUVJ444P;
824 *fmt++ = AV_PIX_FMT_YUV444P;
825 } else if (CHROMA422(h)) {
826 if (h->avctx->color_range == AVCOL_RANGE_JPEG)
827 *fmt++ = AV_PIX_FMT_YUVJ422P;
829 *fmt++ = AV_PIX_FMT_YUV422P;
831 #if CONFIG_H264_DXVA2_HWACCEL
832 *fmt++ = AV_PIX_FMT_DXVA2_VLD;
834 #if CONFIG_H264_D3D11VA_HWACCEL
835 *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
836 *fmt++ = AV_PIX_FMT_D3D11;
838 #if CONFIG_H264_VAAPI_HWACCEL
839 *fmt++ = AV_PIX_FMT_VAAPI;
841 #if CONFIG_H264_VDA_HWACCEL
842 *fmt++ = AV_PIX_FMT_VDA_VLD;
843 *fmt++ = AV_PIX_FMT_VDA;
845 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
846 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
848 if (h->avctx->codec->pix_fmts)
849 choices = h->avctx->codec->pix_fmts;
850 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
851 *fmt++ = AV_PIX_FMT_YUVJ420P;
853 *fmt++ = AV_PIX_FMT_YUV420P;
857 av_log(h->avctx, AV_LOG_ERROR,
858 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
859 return AVERROR_INVALIDDATA;
862 *fmt = AV_PIX_FMT_NONE;
864 for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
865 if (choices[i] == h->avctx->pix_fmt && !force_callback)
867 return ff_thread_get_format(h->avctx, choices);
870 /* export coded and cropped frame dimensions to AVCodecContext */
871 static int init_dimensions(H264Context *h)
873 const SPS *sps = (const SPS*)h->ps.sps;
874 int cr = sps->crop_right;
875 int cl = sps->crop_left;
876 int ct = sps->crop_top;
877 int cb = sps->crop_bottom;
878 int width = h->width - (cr + cl);
879 int height = h->height - (ct + cb);
880 av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
881 av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
883 /* handle container cropping */
884 if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
885 !sps->crop_top && !sps->crop_left &&
886 FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
887 FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
888 h->width_from_caller <= width &&
889 h->height_from_caller <= height) {
890 width = h->width_from_caller;
891 height = h->height_from_caller;
894 cr = h->width - width;
895 cb = h->height - height;
897 h->width_from_caller = 0;
898 h->height_from_caller = 0;
901 h->avctx->coded_width = h->width;
902 h->avctx->coded_height = h->height;
903 h->avctx->width = width;
904 h->avctx->height = height;
913 static int h264_slice_header_init(H264Context *h)
915 const SPS *sps = h->ps.sps;
918 ff_set_sar(h->avctx, sps->sar);
919 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
920 &h->chroma_x_shift, &h->chroma_y_shift);
922 if (sps->timing_info_present_flag) {
923 int64_t den = sps->time_scale;
924 if (h->sei.unregistered.x264_build < 44U)
926 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
927 sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
930 ff_h264_free_tables(h);
933 h->prev_interlaced_frame = 1;
936 ret = ff_h264_alloc_tables(h);
938 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
943 if (h->avctx->codec &&
944 h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU &&
945 (sps->bit_depth_luma != 8 || sps->chroma_format_idc > 1)) {
946 av_log(h->avctx, AV_LOG_ERROR,
947 "VDPAU decoding does not support video colorspace.\n");
948 ret = AVERROR_INVALIDDATA;
953 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
954 sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
956 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
957 sps->bit_depth_luma);
958 ret = AVERROR_INVALIDDATA;
962 h->cur_bit_depth_luma =
963 h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
964 h->cur_chroma_format_idc = sps->chroma_format_idc;
965 h->pixel_shift = sps->bit_depth_luma > 8;
966 h->chroma_format_idc = sps->chroma_format_idc;
967 h->bit_depth_luma = sps->bit_depth_luma;
969 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
970 sps->chroma_format_idc);
971 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
972 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
973 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
974 sps->chroma_format_idc);
975 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
977 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
978 ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
980 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
984 for (i = 0; i < h->nb_slice_ctx; i++) {
985 H264SliceContext *sl = &h->slice_ctx[i];
988 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
989 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
990 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
992 if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
993 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
999 h->context_initialized = 1;
1003 ff_h264_free_tables(h);
1004 h->context_initialized = 0;
1008 static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
1011 case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P;
1012 case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P;
1013 case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P;
1019 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1022 int needs_reinit = 0, must_reinit, ret;
1025 av_buffer_unref(&h->ps.pps_ref);
1027 h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1029 return AVERROR(ENOMEM);
1030 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1033 if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
1034 av_buffer_unref(&h->ps.sps_ref);
1036 h->ps.sps_ref = av_buffer_ref(h->ps.sps_list[h->ps.pps->sps_id]);
1038 return AVERROR(ENOMEM);
1039 h->ps.sps = (const SPS*)h->ps.sps_ref->data;
1041 if (h->mb_width != h->ps.sps->mb_width ||
1042 h->mb_height != h->ps.sps->mb_height ||
1043 h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
1044 h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
1048 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1049 h->chroma_format_idc != h->ps.sps->chroma_format_idc)
1054 must_reinit = (h->context_initialized &&
1055 ( 16*sps->mb_width != h->avctx->coded_width
1056 || 16*sps->mb_height != h->avctx->coded_height
1057 || h->cur_bit_depth_luma != sps->bit_depth_luma
1058 || h->cur_chroma_format_idc != sps->chroma_format_idc
1059 || h->mb_width != sps->mb_width
1060 || h->mb_height != sps->mb_height
1062 if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1063 || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
1066 if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1069 if (!h->setup_finished) {
1070 h->avctx->profile = ff_h264_get_profile(sps);
1071 h->avctx->level = sps->level_idc;
1072 h->avctx->refs = sps->ref_frame_count;
1074 h->mb_width = sps->mb_width;
1075 h->mb_height = sps->mb_height;
1076 h->mb_num = h->mb_width * h->mb_height;
1077 h->mb_stride = h->mb_width + 1;
1079 h->b_stride = h->mb_width * 4;
1081 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1083 h->width = 16 * h->mb_width;
1084 h->height = 16 * h->mb_height;
1086 ret = init_dimensions(h);
1090 if (sps->video_signal_type_present_flag) {
1091 h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1093 if (sps->colour_description_present_flag) {
1094 if (h->avctx->colorspace != sps->colorspace)
1096 h->avctx->color_primaries = sps->color_primaries;
1097 h->avctx->color_trc = sps->color_trc;
1098 h->avctx->colorspace = sps->colorspace;
1103 if (!h->context_initialized || must_reinit || needs_reinit) {
1104 int flush_changes = h->context_initialized;
1105 h->context_initialized = 0;
1106 if (sl != h->slice_ctx) {
1107 av_log(h->avctx, AV_LOG_ERROR,
1108 "changing width %d -> %d / height %d -> %d on "
1110 h->width, h->avctx->coded_width,
1111 h->height, h->avctx->coded_height,
1112 h->current_slice + 1);
1113 return AVERROR_INVALIDDATA;
1116 av_assert1(first_slice);
1119 ff_h264_flush_change(h);
1121 if ((ret = get_pixel_format(h, 1)) < 0)
1123 h->avctx->pix_fmt = ret;
1125 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1126 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1128 if ((ret = h264_slice_header_init(h)) < 0) {
1129 av_log(h->avctx, AV_LOG_ERROR,
1130 "h264_slice_header_init() failed\n");
1138 static int h264_export_frame_props(H264Context *h)
1140 const SPS *sps = h->ps.sps;
1141 H264Picture *cur = h->cur_pic_ptr;
1143 cur->f->interlaced_frame = 0;
1144 cur->f->repeat_pict = 0;
1146 /* Signal interlacing information externally. */
1147 /* Prioritize picture timing SEI information over used
1148 * decoding process if it exists. */
1150 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1151 H264SEIPictureTiming *pt = &h->sei.picture_timing;
1152 switch (pt->pic_struct) {
1153 case H264_SEI_PIC_STRUCT_FRAME:
1155 case H264_SEI_PIC_STRUCT_TOP_FIELD:
1156 case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
1157 cur->f->interlaced_frame = 1;
1159 case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
1160 case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
1161 if (FIELD_OR_MBAFF_PICTURE(h))
1162 cur->f->interlaced_frame = 1;
1164 // try to flag soft telecine progressive
1165 cur->f->interlaced_frame = h->prev_interlaced_frame;
1167 case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1168 case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1169 /* Signal the possibility of telecined film externally
1170 * (pic_struct 5,6). From these hints, let the applications
1171 * decide if they apply deinterlacing. */
1172 cur->f->repeat_pict = 1;
1174 case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
1175 cur->f->repeat_pict = 2;
1177 case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
1178 cur->f->repeat_pict = 4;
1182 if ((pt->ct_type & 3) &&
1183 pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
1184 cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1186 /* Derive interlacing flag from used decoding process. */
1187 cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1189 h->prev_interlaced_frame = cur->f->interlaced_frame;
1191 if (cur->field_poc[0] != cur->field_poc[1]) {
1192 /* Derive top_field_first from field pocs. */
1193 cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1195 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1196 /* Use picture timing SEI information. Even if it is a
1197 * information of a past frame, better than nothing. */
1198 if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
1199 h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1200 cur->f->top_field_first = 1;
1202 cur->f->top_field_first = 0;
1203 } else if (cur->f->interlaced_frame) {
1204 /* Default to top field first when pic_struct_present_flag
1205 * is not set but interlaced frame detected */
1206 cur->f->top_field_first = 1;
1208 /* Most likely progressive */
1209 cur->f->top_field_first = 0;
1213 if (h->sei.frame_packing.present &&
1214 h->sei.frame_packing.frame_packing_arrangement_type <= 6 &&
1215 h->sei.frame_packing.content_interpretation_type > 0 &&
1216 h->sei.frame_packing.content_interpretation_type < 3) {
1217 H264SEIFramePacking *fp = &h->sei.frame_packing;
1218 AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
1220 switch (fp->frame_packing_arrangement_type) {
1222 stereo->type = AV_STEREO3D_CHECKERBOARD;
1225 stereo->type = AV_STEREO3D_COLUMNS;
1228 stereo->type = AV_STEREO3D_LINES;
1231 if (fp->quincunx_sampling_flag)
1232 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1234 stereo->type = AV_STEREO3D_SIDEBYSIDE;
1237 stereo->type = AV_STEREO3D_TOPBOTTOM;
1240 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1243 stereo->type = AV_STEREO3D_2D;
1247 if (fp->content_interpretation_type == 2)
1248 stereo->flags = AV_STEREO3D_FLAG_INVERT;
1252 if (h->sei.display_orientation.present &&
1253 (h->sei.display_orientation.anticlockwise_rotation ||
1254 h->sei.display_orientation.hflip ||
1255 h->sei.display_orientation.vflip)) {
1256 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1257 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1258 AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
1259 AV_FRAME_DATA_DISPLAYMATRIX,
1260 sizeof(int32_t) * 9);
1262 av_display_rotation_set((int32_t *)rotation->data, angle);
1263 av_display_matrix_flip((int32_t *)rotation->data,
1264 o->hflip, o->vflip);
1268 if (h->sei.afd.present) {
1269 AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
1273 *sd->data = h->sei.afd.active_format_description;
1274 h->sei.afd.present = 0;
1278 if (h->sei.a53_caption.a53_caption) {
1279 H264SEIA53Caption *a53 = &h->sei.a53_caption;
1280 AVFrameSideData *sd = av_frame_new_side_data(cur->f,
1281 AV_FRAME_DATA_A53_CC,
1282 a53->a53_caption_size);
1284 memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
1285 av_freep(&a53->a53_caption);
1286 a53->a53_caption_size = 0;
1287 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
1290 if (h->sei.alternative_transfer.present &&
1291 av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) &&
1292 h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) {
1293 h->avctx->color_trc = cur->f->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics;
1299 static int h264_select_output_frame(H264Context *h)
1301 const SPS *sps = h->ps.sps;
1302 H264Picture *out = h->cur_pic_ptr;
1303 H264Picture *cur = h->cur_pic_ptr;
1304 int i, pics, out_of_order, out_idx;
1306 cur->mmco_reset = h->mmco_reset;
1309 if (sps->bitstream_restriction_flag ||
1310 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
1311 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
1314 for (i = 0; 1; i++) {
1315 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1317 h->last_pocs[i-1] = cur->poc;
1320 h->last_pocs[i-1]= h->last_pocs[i];
1323 out_of_order = MAX_DELAYED_PIC_COUNT - i;
1324 if( cur->f->pict_type == AV_PICTURE_TYPE_B
1325 || (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))
1326 out_of_order = FFMAX(out_of_order, 1);
1327 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1328 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1329 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1330 h->last_pocs[i] = INT_MIN;
1331 h->last_pocs[0] = cur->poc;
1332 cur->mmco_reset = 1;
1333 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1334 int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1335 av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1336 h->avctx->has_b_frames = out_of_order;
1340 while (h->delayed_pic[pics])
1343 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1345 h->delayed_pic[pics++] = cur;
1346 if (cur->reference == 0)
1347 cur->reference = DELAYED_PIC_REF;
1349 out = h->delayed_pic[0];
1351 for (i = 1; h->delayed_pic[i] &&
1352 !h->delayed_pic[i]->f->key_frame &&
1353 !h->delayed_pic[i]->mmco_reset;
1355 if (h->delayed_pic[i]->poc < out->poc) {
1356 out = h->delayed_pic[i];
1359 if (h->avctx->has_b_frames == 0 &&
1360 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1361 h->next_outputed_poc = INT_MIN;
1362 out_of_order = out->poc < h->next_outputed_poc;
1364 if (out_of_order || pics > h->avctx->has_b_frames) {
1365 out->reference &= ~DELAYED_PIC_REF;
1366 for (i = out_idx; h->delayed_pic[i]; i++)
1367 h->delayed_pic[i] = h->delayed_pic[i + 1];
1369 if (!out_of_order && pics > h->avctx->has_b_frames) {
1370 h->next_output_pic = out;
1371 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1372 h->next_outputed_poc = INT_MIN;
1374 h->next_outputed_poc = out->poc;
1376 if (out->recovered) {
1377 // We have reached an recovery point and all frames after it in
1378 // display order are "recovered".
1379 h->frame_recovered |= FRAME_RECOVERED_SEI;
1381 out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
1383 if (!out->recovered) {
1384 if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1385 !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) {
1386 h->next_output_pic = NULL;
1388 out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1392 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1398 /* This function is called right after decoding the slice header for a first
1399 * slice in a field (or a frame). It decides whether we are decoding a new frame
1400 * or a second field in a pair and does the necessary setup.
1402 static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1403 const H2645NAL *nal, int first_slice)
1408 int last_pic_structure, last_pic_droppable, ret;
1410 ret = h264_init_ps(h, sl, first_slice);
1416 last_pic_droppable = h->droppable;
1417 last_pic_structure = h->picture_structure;
1418 h->droppable = (nal->ref_idc == 0);
1419 h->picture_structure = sl->picture_structure;
1421 h->poc.frame_num = sl->frame_num;
1422 h->poc.poc_lsb = sl->poc_lsb;
1423 h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1424 h->poc.delta_poc[0] = sl->delta_poc[0];
1425 h->poc.delta_poc[1] = sl->delta_poc[1];
1427 /* Shorten frame num gaps so we don't have to allocate reference
1428 * frames just to throw them away */
1429 if (h->poc.frame_num != h->poc.prev_frame_num) {
1430 int unwrap_prev_frame_num = h->poc.prev_frame_num;
1431 int max_frame_num = 1 << sps->log2_max_frame_num;
1433 if (unwrap_prev_frame_num > h->poc.frame_num)
1434 unwrap_prev_frame_num -= max_frame_num;
1436 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1437 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1438 if (unwrap_prev_frame_num < 0)
1439 unwrap_prev_frame_num += max_frame_num;
1441 h->poc.prev_frame_num = unwrap_prev_frame_num;
1445 /* See if we have a decoded first field looking for a pair...
1446 * Here, we're using that to see if we should mark previously
1447 * decode frames as "finished".
1448 * We have to do that before the "dummy" in-between frame allocation,
1449 * since that can modify h->cur_pic_ptr. */
1450 if (h->first_field) {
1451 int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1452 av_assert0(h->cur_pic_ptr);
1453 av_assert0(h->cur_pic_ptr->f->buf[0]);
1454 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1456 /* Mark old field/frame as completed */
1457 if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1458 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1461 /* figure out if we have a complementary field pair */
1462 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1463 /* Previous field is unmatched. Don't display it, but let it
1464 * remain for reference if marked as such. */
1465 if (last_pic_structure != PICT_FRAME) {
1466 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1467 last_pic_structure == PICT_TOP_FIELD);
1470 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1471 /* This and previous field were reference, but had
1472 * different frame_nums. Consider this field first in
1473 * pair. Throw away previous field except for reference
1475 if (last_pic_structure != PICT_FRAME) {
1476 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1477 last_pic_structure == PICT_TOP_FIELD);
1480 /* Second field in complementary pair */
1481 if (!((last_pic_structure == PICT_TOP_FIELD &&
1482 h->picture_structure == PICT_BOTTOM_FIELD) ||
1483 (last_pic_structure == PICT_BOTTOM_FIELD &&
1484 h->picture_structure == PICT_TOP_FIELD))) {
1485 av_log(h->avctx, AV_LOG_ERROR,
1486 "Invalid field mode combination %d/%d\n",
1487 last_pic_structure, h->picture_structure);
1488 h->picture_structure = last_pic_structure;
1489 h->droppable = last_pic_droppable;
1490 return AVERROR_INVALIDDATA;
1491 } else if (last_pic_droppable != h->droppable) {
1492 avpriv_request_sample(h->avctx,
1493 "Found reference and non-reference fields in the same frame, which");
1494 h->picture_structure = last_pic_structure;
1495 h->droppable = last_pic_droppable;
1496 return AVERROR_PATCHWELCOME;
1502 while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1503 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1504 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1505 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1506 h->poc.frame_num, h->poc.prev_frame_num);
1507 if (!sps->gaps_in_frame_num_allowed_flag)
1508 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1509 h->last_pocs[i] = INT_MIN;
1510 ret = h264_frame_start(h);
1516 h->poc.prev_frame_num++;
1517 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1518 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1519 h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag;
1520 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1521 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1523 h->explicit_ref_marking = 0;
1524 ret = ff_h264_execute_ref_pic_marking(h);
1525 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1527 /* Error concealment: If a ref is missing, copy the previous ref
1529 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1530 * many assumptions about there being no actual duplicates.
1531 * FIXME: This does not copy padding for out-of-frame motion
1532 * vectors. Given we are concealing a lost frame, this probably
1533 * is not noticeable by comparison, but it should be fixed. */
1534 if (h->short_ref_count) {
1536 h->short_ref[0]->f->width == prev->f->width &&
1537 h->short_ref[0]->f->height == prev->f->height &&
1538 h->short_ref[0]->f->format == prev->f->format) {
1539 ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1540 if (prev->field_picture)
1541 ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1542 av_image_copy(h->short_ref[0]->f->data,
1543 h->short_ref[0]->f->linesize,
1544 (const uint8_t **)prev->f->data,
1549 h->short_ref[0]->poc = prev->poc + 2;
1551 h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1555 /* See if we have a decoded first field looking for a pair...
1556 * We're using that to see whether to continue decoding in that
1557 * frame, or to allocate a new one. */
1558 if (h->first_field) {
1559 av_assert0(h->cur_pic_ptr);
1560 av_assert0(h->cur_pic_ptr->f->buf[0]);
1561 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1563 /* figure out if we have a complementary field pair */
1564 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1565 /* Previous field is unmatched. Don't display it, but let it
1566 * remain for reference if marked as such. */
1567 h->missing_fields ++;
1568 h->cur_pic_ptr = NULL;
1569 h->first_field = FIELD_PICTURE(h);
1571 h->missing_fields = 0;
1572 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1573 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1574 h->picture_structure==PICT_BOTTOM_FIELD);
1575 /* This and the previous field had different frame_nums.
1576 * Consider this field first in pair. Throw away previous
1577 * one except for reference purposes. */
1579 h->cur_pic_ptr = NULL;
1581 /* Second field in complementary pair */
1586 /* Frame or first field in a potentially complementary pair */
1587 h->first_field = FIELD_PICTURE(h);
1590 if (!FIELD_PICTURE(h) || h->first_field) {
1591 if (h264_frame_start(h) < 0) {
1593 return AVERROR_INVALIDDATA;
1596 int field = h->picture_structure == PICT_BOTTOM_FIELD;
1597 release_unused_pictures(h, 0);
1598 h->cur_pic_ptr->tf.owner[field] = h->avctx;
1600 /* Some macroblocks can be accessed before they're available in case
1601 * of lost slices, MBAFF or threading. */
1602 if (FIELD_PICTURE(h)) {
1603 for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
1604 memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
1606 memset(h->slice_table, -1,
1607 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
1610 ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
1611 h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1613 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1614 h->nb_mmco = sl->nb_mmco;
1615 h->explicit_ref_marking = sl->explicit_ref_marking;
1617 h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1619 if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1620 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1622 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1623 h->valid_recovery_point = 1;
1625 if ( h->recovery_frame < 0
1626 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1627 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1629 if (!h->valid_recovery_point)
1630 h->recovery_frame = h->poc.frame_num;
1634 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1636 if (nal->type == H264_NAL_IDR_SLICE ||
1637 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1638 h->recovery_frame = -1;
1639 h->cur_pic_ptr->recovered = 1;
1641 // If we have an IDR, all frames after it in decoded order are
1643 if (nal->type == H264_NAL_IDR_SLICE)
1644 h->frame_recovered |= FRAME_RECOVERED_IDR;
1646 h->cur_pic_ptr->recovered |= h->frame_recovered;
1648 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1651 /* Set the frame properties/side data. Only done for the second field in
1652 * field coded frames, since some SEI information is present for each field
1653 * and is merged by the SEI parsing code. */
1654 if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1655 ret = h264_export_frame_props(h);
1659 ret = h264_select_output_frame(h);
1667 static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1668 const H2645NAL *nal)
1673 unsigned int slice_type, tmp, i;
1674 int field_pic_flag, bottom_field_flag;
1675 int first_slice = sl == h->slice_ctx && !h->current_slice;
1676 int picture_structure;
1679 av_assert0(!h->setup_finished);
1681 sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1683 slice_type = get_ue_golomb_31(&sl->gb);
1684 if (slice_type > 9) {
1685 av_log(h->avctx, AV_LOG_ERROR,
1686 "slice type %d too large at %d\n",
1687 slice_type, sl->first_mb_addr);
1688 return AVERROR_INVALIDDATA;
1690 if (slice_type > 4) {
1692 sl->slice_type_fixed = 1;
1694 sl->slice_type_fixed = 0;
1696 slice_type = ff_h264_golomb_to_pict_type[slice_type];
1697 sl->slice_type = slice_type;
1698 sl->slice_type_nos = slice_type & 3;
1700 if (nal->type == H264_NAL_IDR_SLICE &&
1701 sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1702 av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1703 return AVERROR_INVALIDDATA;
1706 sl->pps_id = get_ue_golomb(&sl->gb);
1707 if (sl->pps_id >= MAX_PPS_COUNT) {
1708 av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1709 return AVERROR_INVALIDDATA;
1711 if (!h->ps.pps_list[sl->pps_id]) {
1712 av_log(h->avctx, AV_LOG_ERROR,
1713 "non-existing PPS %u referenced\n",
1715 return AVERROR_INVALIDDATA;
1717 pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1719 if (!h->ps.sps_list[pps->sps_id]) {
1720 av_log(h->avctx, AV_LOG_ERROR,
1721 "non-existing SPS %u referenced\n", pps->sps_id);
1722 return AVERROR_INVALIDDATA;
1724 sps = (const SPS*)h->ps.sps_list[pps->sps_id]->data;
1726 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1728 if (h->poc.frame_num != sl->frame_num) {
1729 av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1730 h->poc.frame_num, sl->frame_num);
1731 return AVERROR_INVALIDDATA;
1737 if (sps->frame_mbs_only_flag) {
1738 picture_structure = PICT_FRAME;
1740 if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1741 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1744 field_pic_flag = get_bits1(&sl->gb);
1745 if (field_pic_flag) {
1746 bottom_field_flag = get_bits1(&sl->gb);
1747 picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1749 picture_structure = PICT_FRAME;
1752 sl->picture_structure = picture_structure;
1753 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1755 if (picture_structure == PICT_FRAME) {
1756 sl->curr_pic_num = sl->frame_num;
1757 sl->max_pic_num = 1 << sps->log2_max_frame_num;
1759 sl->curr_pic_num = 2 * sl->frame_num + 1;
1760 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1763 if (nal->type == H264_NAL_IDR_SLICE)
1764 get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1766 if (sps->poc_type == 0) {
1767 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1769 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1770 sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1773 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1774 sl->delta_poc[0] = get_se_golomb(&sl->gb);
1776 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1777 sl->delta_poc[1] = get_se_golomb(&sl->gb);
1780 sl->redundant_pic_count = 0;
1781 if (pps->redundant_pic_cnt_present)
1782 sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1784 if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1785 sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1787 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
1788 &sl->gb, pps, sl->slice_type_nos,
1789 picture_structure, h->avctx);
1793 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1794 ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx);
1796 sl->ref_count[1] = sl->ref_count[0] = 0;
1801 sl->pwt.use_weight = 0;
1802 for (i = 0; i < 2; i++) {
1803 sl->pwt.luma_weight_flag[i] = 0;
1804 sl->pwt.chroma_weight_flag[i] = 0;
1806 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1807 (pps->weighted_bipred_idc == 1 &&
1808 sl->slice_type_nos == AV_PICTURE_TYPE_B)) {
1809 ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1810 sl->slice_type_nos, &sl->pwt,
1811 picture_structure, h->avctx);
1816 sl->explicit_ref_marking = 0;
1818 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1819 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1820 return AVERROR_INVALIDDATA;
1823 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1824 tmp = get_ue_golomb_31(&sl->gb);
1826 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1827 return AVERROR_INVALIDDATA;
1829 sl->cabac_init_idc = tmp;
1832 sl->last_qscale_diff = 0;
1833 tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1834 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1835 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1836 return AVERROR_INVALIDDATA;
1839 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1840 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1841 // FIXME qscale / qp ... stuff
1842 if (sl->slice_type == AV_PICTURE_TYPE_SP)
1843 get_bits1(&sl->gb); /* sp_for_switch_flag */
1844 if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1845 sl->slice_type == AV_PICTURE_TYPE_SI)
1846 get_se_golomb(&sl->gb); /* slice_qs_delta */
1848 sl->deblocking_filter = 1;
1849 sl->slice_alpha_c0_offset = 0;
1850 sl->slice_beta_offset = 0;
1851 if (pps->deblocking_filter_parameters_present) {
1852 tmp = get_ue_golomb_31(&sl->gb);
1854 av_log(h->avctx, AV_LOG_ERROR,
1855 "deblocking_filter_idc %u out of range\n", tmp);
1856 return AVERROR_INVALIDDATA;
1858 sl->deblocking_filter = tmp;
1859 if (sl->deblocking_filter < 2)
1860 sl->deblocking_filter ^= 1; // 1<->0
1862 if (sl->deblocking_filter) {
1863 int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1864 int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1865 if (slice_alpha_c0_offset_div2 > 6 ||
1866 slice_alpha_c0_offset_div2 < -6 ||
1867 slice_beta_offset_div2 > 6 ||
1868 slice_beta_offset_div2 < -6) {
1869 av_log(h->avctx, AV_LOG_ERROR,
1870 "deblocking filter parameters %d %d out of range\n",
1871 slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1872 return AVERROR_INVALIDDATA;
1874 sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1875 sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1882 /* do all the per-slice initialization needed before we can start decoding the
1884 static int h264_slice_init(H264Context *h, H264SliceContext *sl,
1885 const H2645NAL *nal)
1889 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1890 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1891 return AVERROR_INVALIDDATA;
1894 av_assert1(h->mb_num == h->mb_width * h->mb_height);
1895 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1896 sl->first_mb_addr >= h->mb_num) {
1897 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1898 return AVERROR_INVALIDDATA;
1900 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1901 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1902 FIELD_OR_MBAFF_PICTURE(h);
1903 if (h->picture_structure == PICT_BOTTOM_FIELD)
1904 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1905 av_assert1(sl->mb_y < h->mb_height);
1907 ret = ff_h264_build_ref_list(h, sl);
1911 if (h->ps.pps->weighted_bipred_idc == 2 &&
1912 sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1913 implicit_weight_table(h, sl, -1);
1914 if (FRAME_MBAFF(h)) {
1915 implicit_weight_table(h, sl, 0);
1916 implicit_weight_table(h, sl, 1);
1920 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
1921 ff_h264_direct_dist_scale_factor(h, sl);
1922 if (!h->setup_finished)
1923 ff_h264_direct_ref_list_init(h, sl);
1925 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1926 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
1927 h->nal_unit_type != H264_NAL_IDR_SLICE) ||
1928 (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA &&
1929 sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
1930 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
1931 sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
1932 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
1934 sl->deblocking_filter = 0;
1936 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
1937 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
1938 /* Cheat slightly for speed:
1939 * Do not bother to deblock across slices. */
1940 sl->deblocking_filter = 2;
1942 h->postpone_filter = 1;
1945 sl->qp_thresh = 15 -
1946 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
1948 h->ps.pps->chroma_qp_index_offset[0],
1949 h->ps.pps->chroma_qp_index_offset[1]) +
1950 6 * (h->ps.sps->bit_depth_luma - 8);
1952 sl->slice_num = ++h->current_slice;
1955 h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
1956 if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
1957 && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
1958 && sl->slice_num >= MAX_SLICES) {
1959 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
1960 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);
1963 for (j = 0; j < 2; j++) {
1965 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
1966 for (i = 0; i < 16; i++) {
1968 if (j < sl->list_count && i < sl->ref_count[j] &&
1969 sl->ref_list[j][i].parent->f->buf[0]) {
1971 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
1972 for (k = 0; k < h->short_ref_count; k++)
1973 if (h->short_ref[k]->f->buf[0]->buffer == buf) {
1977 for (k = 0; k < h->long_ref_count; k++)
1978 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
1979 id_list[i] = h->short_ref_count + k;
1987 for (i = 0; i < 16; i++)
1988 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
1990 ref2frm[18 + 1] = -1;
1991 for (i = 16; i < 48; i++)
1992 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
1993 (sl->ref_list[j][i].reference & 3);
1996 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
1997 av_log(h->avctx, AV_LOG_DEBUG,
1998 "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",
2000 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2001 sl->mb_y * h->mb_width + sl->mb_x,
2002 av_get_picture_type_char(sl->slice_type),
2003 sl->slice_type_fixed ? " fix" : "",
2004 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2006 h->cur_pic_ptr->field_poc[0],
2007 h->cur_pic_ptr->field_poc[1],
2008 sl->ref_count[0], sl->ref_count[1],
2010 sl->deblocking_filter,
2011 sl->slice_alpha_c0_offset, sl->slice_beta_offset,
2013 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2014 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2020 int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
2022 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
2023 int first_slice = sl == h->slice_ctx && !h->current_slice;
2028 ret = h264_slice_header_parse(h, sl, nal);
2032 // discard redundant pictures
2033 if (sl->redundant_pic_count > 0) {
2034 sl->ref_count[0] = sl->ref_count[1] = 0;
2038 if (sl->first_mb_addr == 0 || !h->current_slice) {
2039 if (h->setup_finished) {
2040 av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2041 return AVERROR_INVALIDDATA;
2045 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2046 if (h->current_slice) {
2047 // this slice starts a new field
2048 // first decode any pending queued slices
2049 if (h->nb_slice_ctx_queued) {
2050 H264SliceContext tmp_ctx;
2052 ret = ff_h264_execute_decode_slices(h);
2053 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2056 memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2057 memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2058 memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2062 if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2063 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2066 } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2067 av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2068 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2069 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2070 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2071 h->cur_pic_ptr = NULL;
2075 return AVERROR_INVALIDDATA;
2078 if (!h->first_field) {
2079 if (h->cur_pic_ptr && !h->droppable) {
2080 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2081 h->picture_structure == PICT_BOTTOM_FIELD);
2083 h->cur_pic_ptr = NULL;
2087 if (!h->current_slice)
2088 av_assert0(sl == h->slice_ctx);
2090 if (h->current_slice == 0 && !h->first_field) {
2092 (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2093 (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2094 (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2095 (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) ||
2096 h->avctx->skip_frame >= AVDISCARD_ALL) {
2102 const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2104 if (h->ps.pps->sps_id != pps->sps_id ||
2105 h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2106 (h->setup_finished && h->ps.pps != pps)*/) {
2107 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2108 return AVERROR_INVALIDDATA;
2110 if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
2111 av_log(h->avctx, AV_LOG_ERROR,
2112 "SPS changed in the middle of the frame\n");
2113 return AVERROR_INVALIDDATA;
2117 if (h->current_slice == 0) {
2118 ret = h264_field_start(h, sl, nal, first_slice);
2122 if (h->picture_structure != sl->picture_structure ||
2123 h->droppable != (nal->ref_idc == 0)) {
2124 av_log(h->avctx, AV_LOG_ERROR,
2125 "Changing field mode (%d -> %d) between slices is not allowed\n",
2126 h->picture_structure, sl->picture_structure);
2127 return AVERROR_INVALIDDATA;
2128 } else if (!h->cur_pic_ptr) {
2129 av_log(h->avctx, AV_LOG_ERROR,
2130 "unset cur_pic_ptr on slice %d\n",
2131 h->current_slice + 1);
2132 return AVERROR_INVALIDDATA;
2136 ret = h264_slice_init(h, sl, nal);
2140 h->nb_slice_ctx_queued++;
2145 int ff_h264_get_slice_type(const H264SliceContext *sl)
2147 switch (sl->slice_type) {
2148 case AV_PICTURE_TYPE_P:
2150 case AV_PICTURE_TYPE_B:
2152 case AV_PICTURE_TYPE_I:
2154 case AV_PICTURE_TYPE_SP:
2156 case AV_PICTURE_TYPE_SI:
2159 return AVERROR_INVALIDDATA;
2163 static av_always_inline void fill_filter_caches_inter(const H264Context *h,
2164 H264SliceContext *sl,
2165 int mb_type, int top_xy,
2166 int left_xy[LEFT_MBS],
2168 int left_type[LEFT_MBS],
2169 int mb_xy, int list)
2171 int b_stride = h->b_stride;
2172 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2173 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2174 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2175 if (USES_LIST(top_type, list)) {
2176 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2177 const int b8_xy = 4 * top_xy + 2;
2178 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2179 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2180 ref_cache[0 - 1 * 8] =
2181 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2182 ref_cache[2 - 1 * 8] =
2183 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2185 AV_ZERO128(mv_dst - 1 * 8);
2186 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2189 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2190 if (USES_LIST(left_type[LTOP], list)) {
2191 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2192 const int b8_xy = 4 * left_xy[LTOP] + 1;
2193 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2194 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2195 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2196 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2197 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2199 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2200 ref_cache[-1 + 16] =
2201 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2203 AV_ZERO32(mv_dst - 1 + 0);
2204 AV_ZERO32(mv_dst - 1 + 8);
2205 AV_ZERO32(mv_dst - 1 + 16);
2206 AV_ZERO32(mv_dst - 1 + 24);
2209 ref_cache[-1 + 16] =
2210 ref_cache[-1 + 24] = LIST_NOT_USED;
2215 if (!USES_LIST(mb_type, list)) {
2216 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2217 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2218 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2219 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2220 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2225 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2226 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2227 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2228 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2229 AV_WN32A(&ref_cache[0 * 8], ref01);
2230 AV_WN32A(&ref_cache[1 * 8], ref01);
2231 AV_WN32A(&ref_cache[2 * 8], ref23);
2232 AV_WN32A(&ref_cache[3 * 8], ref23);
2236 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2237 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2238 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2239 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2240 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2245 * @return non zero if the loop filter can be skipped
2247 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2249 const int mb_xy = sl->mb_xy;
2250 int top_xy, left_xy[LEFT_MBS];
2251 int top_type, left_type[LEFT_MBS];
2255 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2257 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2258 if (FRAME_MBAFF(h)) {
2259 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2260 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2262 if (left_mb_field_flag != curr_mb_field_flag)
2263 left_xy[LTOP] -= h->mb_stride;
2265 if (curr_mb_field_flag)
2266 top_xy += h->mb_stride &
2267 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2268 if (left_mb_field_flag != curr_mb_field_flag)
2269 left_xy[LBOT] += h->mb_stride;
2273 sl->top_mb_xy = top_xy;
2274 sl->left_mb_xy[LTOP] = left_xy[LTOP];
2275 sl->left_mb_xy[LBOT] = left_xy[LBOT];
2277 /* For sufficiently low qp, filtering wouldn't do anything.
2278 * This is a conservative estimate: could also check beta_offset
2279 * and more accurate chroma_qp. */
2280 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2281 int qp = h->cur_pic.qscale_table[mb_xy];
2282 if (qp <= qp_thresh &&
2283 (left_xy[LTOP] < 0 ||
2284 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2286 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2287 if (!FRAME_MBAFF(h))
2289 if ((left_xy[LTOP] < 0 ||
2290 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2291 (top_xy < h->mb_stride ||
2292 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2297 top_type = h->cur_pic.mb_type[top_xy];
2298 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2299 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2300 if (sl->deblocking_filter == 2) {
2301 if (h->slice_table[top_xy] != sl->slice_num)
2303 if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2304 left_type[LTOP] = left_type[LBOT] = 0;
2306 if (h->slice_table[top_xy] == 0xFFFF)
2308 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2309 left_type[LTOP] = left_type[LBOT] = 0;
2311 sl->top_type = top_type;
2312 sl->left_type[LTOP] = left_type[LTOP];
2313 sl->left_type[LBOT] = left_type[LBOT];
2315 if (IS_INTRA(mb_type))
2318 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2319 top_type, left_type, mb_xy, 0);
2320 if (sl->list_count == 2)
2321 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2322 top_type, left_type, mb_xy, 1);
2324 nnz = h->non_zero_count[mb_xy];
2325 nnz_cache = sl->non_zero_count_cache;
2326 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2327 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2328 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2329 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2330 sl->cbp = h->cbp_table[mb_xy];
2333 nnz = h->non_zero_count[top_xy];
2334 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2337 if (left_type[LTOP]) {
2338 nnz = h->non_zero_count[left_xy[LTOP]];
2339 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2340 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2341 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2342 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2345 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2346 * from what the loop filter needs */
2347 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2348 if (IS_8x8DCT(top_type)) {
2349 nnz_cache[4 + 8 * 0] =
2350 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2351 nnz_cache[6 + 8 * 0] =
2352 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2354 if (IS_8x8DCT(left_type[LTOP])) {
2355 nnz_cache[3 + 8 * 1] =
2356 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2358 if (IS_8x8DCT(left_type[LBOT])) {
2359 nnz_cache[3 + 8 * 3] =
2360 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2363 if (IS_8x8DCT(mb_type)) {
2364 nnz_cache[scan8[0]] =
2365 nnz_cache[scan8[1]] =
2366 nnz_cache[scan8[2]] =
2367 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2369 nnz_cache[scan8[0 + 4]] =
2370 nnz_cache[scan8[1 + 4]] =
2371 nnz_cache[scan8[2 + 4]] =
2372 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2374 nnz_cache[scan8[0 + 8]] =
2375 nnz_cache[scan8[1 + 8]] =
2376 nnz_cache[scan8[2 + 8]] =
2377 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2379 nnz_cache[scan8[0 + 12]] =
2380 nnz_cache[scan8[1 + 12]] =
2381 nnz_cache[scan8[2 + 12]] =
2382 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2389 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2391 uint8_t *dest_y, *dest_cb, *dest_cr;
2392 int linesize, uvlinesize, mb_x, mb_y;
2393 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2394 const int old_slice_type = sl->slice_type;
2395 const int pixel_shift = h->pixel_shift;
2396 const int block_h = 16 >> h->chroma_y_shift;
2398 if (h->postpone_filter)
2401 if (sl->deblocking_filter) {
2402 for (mb_x = start_x; mb_x < end_x; mb_x++)
2403 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2405 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2406 mb_type = h->cur_pic.mb_type[mb_xy];
2410 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2414 dest_y = h->cur_pic.f->data[0] +
2415 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2416 dest_cb = h->cur_pic.f->data[1] +
2417 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2418 mb_y * sl->uvlinesize * block_h;
2419 dest_cr = h->cur_pic.f->data[2] +
2420 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2421 mb_y * sl->uvlinesize * block_h;
2422 // FIXME simplify above
2425 linesize = sl->mb_linesize = sl->linesize * 2;
2426 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2427 if (mb_y & 1) { // FIXME move out of this function?
2428 dest_y -= sl->linesize * 15;
2429 dest_cb -= sl->uvlinesize * (block_h - 1);
2430 dest_cr -= sl->uvlinesize * (block_h - 1);
2433 linesize = sl->mb_linesize = sl->linesize;
2434 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2436 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2438 if (fill_filter_caches(h, sl, mb_type))
2440 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2441 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2443 if (FRAME_MBAFF(h)) {
2444 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2445 linesize, uvlinesize);
2447 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2448 dest_cr, linesize, uvlinesize);
2452 sl->slice_type = old_slice_type;
2454 sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2455 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2456 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2459 static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
2461 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2462 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2463 h->cur_pic.mb_type[mb_xy - 1] :
2464 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2465 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2466 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2470 * Draw edges and report progress for the last MB row.
2472 static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
2474 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2475 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2476 int height = 16 << FRAME_MBAFF(h);
2477 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2479 if (sl->deblocking_filter) {
2480 if ((top + height) >= pic_height)
2481 height += deblock_border;
2482 top -= deblock_border;
2485 if (top >= pic_height || (top + height) < 0)
2488 height = FFMIN(height, pic_height - top);
2490 height = top + height;
2494 ff_h264_draw_horiz_band(h, sl, top, height);
2496 if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2499 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2500 h->picture_structure == PICT_BOTTOM_FIELD);
2503 static void er_add_slice(H264SliceContext *sl,
2504 int startx, int starty,
2505 int endx, int endy, int status)
2507 if (!sl->h264->enable_er)
2510 if (CONFIG_ERROR_RESILIENCE) {
2511 ERContext *er = &sl->h264->slice_ctx[0].er;
2513 ff_er_add_slice(er, startx, starty, endx, endy, status);
2517 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2519 H264SliceContext *sl = arg;
2520 const H264Context *h = sl->h264;
2521 int lf_x_start = sl->mb_x;
2522 int orig_deblock = sl->deblocking_filter;
2525 sl->linesize = h->cur_pic_ptr->f->linesize[0];
2526 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2528 ret = alloc_scratch_buffers(sl, sl->linesize);
2532 sl->mb_skip_run = -1;
2534 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2536 if (h->postpone_filter)
2537 sl->deblocking_filter = 0;
2539 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2540 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2542 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
2543 const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2545 int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2546 prev_status &= ~ VP_START;
2547 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2548 h->slice_ctx[0].er.error_occurred = 1;
2552 if (h->ps.pps->cabac) {
2554 align_get_bits(&sl->gb);
2557 ret = ff_init_cabac_decoder(&sl->cabac,
2558 sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2559 (get_bits_left(&sl->gb) + 7) / 8);
2563 ff_h264_init_cabac_states(h, sl);
2568 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2569 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2570 sl->next_slice_idx);
2571 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2572 sl->mb_y, ER_MB_ERROR);
2573 return AVERROR_INVALIDDATA;
2576 ret = ff_h264_decode_mb_cabac(h, sl);
2577 // STOP_TIMER("decode_mb_cabac")
2580 ff_h264_hl_decode_mb(h, sl);
2582 // FIXME optimal? or let mb_decode decode 16x32 ?
2583 if (ret >= 0 && FRAME_MBAFF(h)) {
2586 ret = ff_h264_decode_mb_cabac(h, sl);
2589 ff_h264_hl_decode_mb(h, sl);
2592 eos = get_cabac_terminate(&sl->cabac);
2594 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2595 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2596 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2597 sl->mb_y, ER_MB_END);
2598 if (sl->mb_x >= lf_x_start)
2599 loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2602 if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2603 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2604 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2605 av_log(h->avctx, AV_LOG_ERROR,
2606 "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2608 sl->cabac.bytestream_end - sl->cabac.bytestream);
2609 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2610 sl->mb_y, ER_MB_ERROR);
2611 return AVERROR_INVALIDDATA;
2614 if (++sl->mb_x >= h->mb_width) {
2615 loop_filter(h, sl, lf_x_start, sl->mb_x);
2616 sl->mb_x = lf_x_start = 0;
2617 decode_finish_row(h, sl);
2619 if (FIELD_OR_MBAFF_PICTURE(h)) {
2621 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2622 predict_field_decoding_flag(h, sl);
2626 if (eos || sl->mb_y >= h->mb_height) {
2627 ff_tlog(h->avctx, "slice end %d %d\n",
2628 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2629 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2630 sl->mb_y, ER_MB_END);
2631 if (sl->mb_x > lf_x_start)
2632 loop_filter(h, sl, lf_x_start, sl->mb_x);
2640 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2641 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2642 sl->next_slice_idx);
2643 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2644 sl->mb_y, ER_MB_ERROR);
2645 return AVERROR_INVALIDDATA;
2648 ret = ff_h264_decode_mb_cavlc(h, sl);
2651 ff_h264_hl_decode_mb(h, sl);
2653 // FIXME optimal? or let mb_decode decode 16x32 ?
2654 if (ret >= 0 && FRAME_MBAFF(h)) {
2656 ret = ff_h264_decode_mb_cavlc(h, sl);
2659 ff_h264_hl_decode_mb(h, sl);
2664 av_log(h->avctx, AV_LOG_ERROR,
2665 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2666 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2667 sl->mb_y, ER_MB_ERROR);
2671 if (++sl->mb_x >= h->mb_width) {
2672 loop_filter(h, sl, lf_x_start, sl->mb_x);
2673 sl->mb_x = lf_x_start = 0;
2674 decode_finish_row(h, sl);
2676 if (FIELD_OR_MBAFF_PICTURE(h)) {
2678 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2679 predict_field_decoding_flag(h, sl);
2681 if (sl->mb_y >= h->mb_height) {
2682 ff_tlog(h->avctx, "slice end %d %d\n",
2683 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2685 if ( get_bits_left(&sl->gb) == 0
2686 || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2687 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2688 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2692 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2693 sl->mb_x, sl->mb_y, ER_MB_END);
2695 return AVERROR_INVALIDDATA;
2700 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2701 ff_tlog(h->avctx, "slice end %d %d\n",
2702 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2704 if (get_bits_left(&sl->gb) == 0) {
2705 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2706 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2707 if (sl->mb_x > lf_x_start)
2708 loop_filter(h, sl, lf_x_start, sl->mb_x);
2712 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2713 sl->mb_y, ER_MB_ERROR);
2715 return AVERROR_INVALIDDATA;
2722 sl->deblocking_filter = orig_deblock;
2727 * Call decode_slice() for each context.
2729 * @param h h264 master context
2731 int ff_h264_execute_decode_slices(H264Context *h)
2733 AVCodecContext *const avctx = h->avctx;
2734 H264SliceContext *sl;
2735 int context_count = h->nb_slice_ctx_queued;
2739 h->slice_ctx[0].next_slice_idx = INT_MAX;
2741 if (h->avctx->hwaccel || context_count < 1
2742 #if FF_API_CAP_VDPAU
2743 || h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU
2748 av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2750 if (context_count == 1) {
2752 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2753 h->postpone_filter = 0;
2755 ret = decode_slice(avctx, &h->slice_ctx[0]);
2756 h->mb_y = h->slice_ctx[0].mb_y;
2760 av_assert0(context_count > 0);
2761 for (i = 0; i < context_count; i++) {
2762 int next_slice_idx = h->mb_width * h->mb_height;
2765 sl = &h->slice_ctx[i];
2766 if (CONFIG_ERROR_RESILIENCE) {
2767 sl->er.error_count = 0;
2770 /* make sure none of those slices overlap */
2771 slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2772 for (j = 0; j < context_count; j++) {
2773 H264SliceContext *sl2 = &h->slice_ctx[j];
2774 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2776 if (i == j || slice_idx2 < slice_idx)
2778 next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2780 sl->next_slice_idx = next_slice_idx;
2783 avctx->execute(avctx, decode_slice, h->slice_ctx,
2784 NULL, context_count, sizeof(h->slice_ctx[0]));
2786 /* pull back stuff from slices to master context */
2787 sl = &h->slice_ctx[context_count - 1];
2789 if (CONFIG_ERROR_RESILIENCE) {
2790 for (i = 1; i < context_count; i++)
2791 h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
2794 if (h->postpone_filter) {
2795 h->postpone_filter = 0;
2797 for (i = 0; i < context_count; i++) {
2800 sl = &h->slice_ctx[i];
2801 y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2802 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2804 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2806 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2807 j == y_end - 1 ? x_end : h->mb_width);
2814 h->nb_slice_ctx_queued = 0;