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->x264_build = h1->x264_build;
403 h->droppable = h1->droppable;
405 // extradata/NAL handling
406 h->is_avc = h1->is_avc;
407 h->nal_length_size = h1->nal_length_size;
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)
501 ff_color_frame(pic->f, c);
503 h->cur_pic_ptr = pic;
504 ff_h264_unref_picture(h, &h->cur_pic);
505 if (CONFIG_ERROR_RESILIENCE) {
506 ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
509 if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
512 for (i = 0; i < h->nb_slice_ctx; i++) {
513 h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
514 h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
517 if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
518 ff_er_frame_start(&h->slice_ctx[0].er);
519 ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
520 ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
523 for (i = 0; i < 16; i++) {
524 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
525 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
527 for (i = 0; i < 16; i++) {
528 h->block_offset[16 + i] =
529 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
530 h->block_offset[48 + 16 + i] =
531 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
534 /* We mark the current picture as non-reference after allocating it, so
535 * that if we break out due to an error it can be released automatically
536 * in the next ff_mpv_frame_start().
538 h->cur_pic_ptr->reference = 0;
540 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
542 h->next_output_pic = NULL;
544 h->postpone_filter = 0;
546 h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
548 if (h->sei.unregistered.x264_build >= 0)
549 h->x264_build = h->sei.unregistered.x264_build;
551 assert(h->cur_pic_ptr->long_ref == 0);
556 static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
558 uint8_t *src_cb, uint8_t *src_cr,
559 int linesize, int uvlinesize,
564 const int pixel_shift = h->pixel_shift;
565 int chroma444 = CHROMA444(h);
566 int chroma422 = CHROMA422(h);
569 src_cb -= uvlinesize;
570 src_cr -= uvlinesize;
572 if (!simple && FRAME_MBAFF(h)) {
575 top_border = sl->top_borders[0][sl->mb_x];
576 AV_COPY128(top_border, src_y + 15 * linesize);
578 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
579 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
582 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
583 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
584 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
585 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
587 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
588 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
590 } else if (chroma422) {
592 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
593 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
595 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
596 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
600 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
601 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
603 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
604 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
609 } else if (MB_MBAFF(sl)) {
615 top_border = sl->top_borders[top_idx][sl->mb_x];
616 /* There are two lines saved, the line above the top macroblock
617 * of a pair, and the line above the bottom macroblock. */
618 AV_COPY128(top_border, src_y + 16 * linesize);
620 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
622 if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
625 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
626 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
627 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
628 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
630 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
631 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
633 } else if (chroma422) {
635 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
636 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
638 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
639 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
643 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
644 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
646 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
647 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
654 * Initialize implicit_weight table.
655 * @param field 0/1 initialize the weight for interlaced MBAFF
656 * -1 initializes the rest
658 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
660 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
662 for (i = 0; i < 2; i++) {
663 sl->pwt.luma_weight_flag[i] = 0;
664 sl->pwt.chroma_weight_flag[i] = 0;
668 if (h->picture_structure == PICT_FRAME) {
669 cur_poc = h->cur_pic_ptr->poc;
671 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
673 if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
674 sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2 * cur_poc) {
675 sl->pwt.use_weight = 0;
676 sl->pwt.use_weight_chroma = 0;
680 ref_count0 = sl->ref_count[0];
681 ref_count1 = sl->ref_count[1];
683 cur_poc = h->cur_pic_ptr->field_poc[field];
685 ref_count0 = 16 + 2 * sl->ref_count[0];
686 ref_count1 = 16 + 2 * sl->ref_count[1];
689 sl->pwt.use_weight = 2;
690 sl->pwt.use_weight_chroma = 2;
691 sl->pwt.luma_log2_weight_denom = 5;
692 sl->pwt.chroma_log2_weight_denom = 5;
694 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
695 int64_t poc0 = sl->ref_list[0][ref0].poc;
696 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
698 if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
699 int poc1 = sl->ref_list[1][ref1].poc;
700 int td = av_clip_int8(poc1 - poc0);
702 int tb = av_clip_int8(cur_poc - poc0);
703 int tx = (16384 + (FFABS(td) >> 1)) / td;
704 int dist_scale_factor = (tb * tx + 32) >> 8;
705 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
706 w = 64 - dist_scale_factor;
710 sl->pwt.implicit_weight[ref0][ref1][0] =
711 sl->pwt.implicit_weight[ref0][ref1][1] = w;
713 sl->pwt.implicit_weight[ref0][ref1][field] = w;
720 * initialize scan tables
722 static void init_scan_tables(H264Context *h)
725 for (i = 0; i < 16; i++) {
726 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
727 h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
728 h->field_scan[i] = TRANSPOSE(field_scan[i]);
731 for (i = 0; i < 64; i++) {
732 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
733 h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
734 h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
735 h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
736 h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
739 if (h->ps.sps->transform_bypass) { // FIXME same ugly
740 memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
741 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
742 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
743 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
744 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
745 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
747 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
748 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
749 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
750 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
751 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
752 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
756 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
758 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
759 (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
760 CONFIG_H264_NVDEC_HWACCEL + \
761 CONFIG_H264_VAAPI_HWACCEL + \
762 CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
763 CONFIG_H264_VDPAU_HWACCEL)
764 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
765 const enum AVPixelFormat *choices = pix_fmts;
768 switch (h->ps.sps->bit_depth_luma) {
771 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
772 *fmt++ = AV_PIX_FMT_GBRP9;
774 *fmt++ = AV_PIX_FMT_YUV444P9;
775 } else if (CHROMA422(h))
776 *fmt++ = AV_PIX_FMT_YUV422P9;
778 *fmt++ = AV_PIX_FMT_YUV420P9;
782 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
783 *fmt++ = AV_PIX_FMT_GBRP10;
785 *fmt++ = AV_PIX_FMT_YUV444P10;
786 } else if (CHROMA422(h))
787 *fmt++ = AV_PIX_FMT_YUV422P10;
789 *fmt++ = AV_PIX_FMT_YUV420P10;
793 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
794 *fmt++ = AV_PIX_FMT_GBRP12;
796 *fmt++ = AV_PIX_FMT_YUV444P12;
797 } else if (CHROMA422(h))
798 *fmt++ = AV_PIX_FMT_YUV422P12;
800 *fmt++ = AV_PIX_FMT_YUV420P12;
804 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
805 *fmt++ = AV_PIX_FMT_GBRP14;
807 *fmt++ = AV_PIX_FMT_YUV444P14;
808 } else if (CHROMA422(h))
809 *fmt++ = AV_PIX_FMT_YUV422P14;
811 *fmt++ = AV_PIX_FMT_YUV420P14;
814 #if CONFIG_H264_VDPAU_HWACCEL
815 *fmt++ = AV_PIX_FMT_VDPAU;
817 #if CONFIG_H264_NVDEC_HWACCEL
818 *fmt++ = AV_PIX_FMT_CUDA;
821 if (h->avctx->colorspace == AVCOL_SPC_RGB)
822 *fmt++ = AV_PIX_FMT_GBRP;
823 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
824 *fmt++ = AV_PIX_FMT_YUVJ444P;
826 *fmt++ = AV_PIX_FMT_YUV444P;
827 } else if (CHROMA422(h)) {
828 if (h->avctx->color_range == AVCOL_RANGE_JPEG)
829 *fmt++ = AV_PIX_FMT_YUVJ422P;
831 *fmt++ = AV_PIX_FMT_YUV422P;
833 #if CONFIG_H264_DXVA2_HWACCEL
834 *fmt++ = AV_PIX_FMT_DXVA2_VLD;
836 #if CONFIG_H264_D3D11VA_HWACCEL
837 *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
838 *fmt++ = AV_PIX_FMT_D3D11;
840 #if CONFIG_H264_VAAPI_HWACCEL
841 *fmt++ = AV_PIX_FMT_VAAPI;
843 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
844 *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
846 if (h->avctx->codec->pix_fmts)
847 choices = h->avctx->codec->pix_fmts;
848 else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
849 *fmt++ = AV_PIX_FMT_YUVJ420P;
851 *fmt++ = AV_PIX_FMT_YUV420P;
855 av_log(h->avctx, AV_LOG_ERROR,
856 "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
857 return AVERROR_INVALIDDATA;
860 *fmt = AV_PIX_FMT_NONE;
862 for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
863 if (choices[i] == h->avctx->pix_fmt && !force_callback)
865 return ff_thread_get_format(h->avctx, choices);
868 /* export coded and cropped frame dimensions to AVCodecContext */
869 static int init_dimensions(H264Context *h)
871 const SPS *sps = (const SPS*)h->ps.sps;
872 int cr = sps->crop_right;
873 int cl = sps->crop_left;
874 int ct = sps->crop_top;
875 int cb = sps->crop_bottom;
876 int width = h->width - (cr + cl);
877 int height = h->height - (ct + cb);
878 av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
879 av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
881 /* handle container cropping */
882 if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
883 !sps->crop_top && !sps->crop_left &&
884 FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
885 FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
886 h->width_from_caller <= width &&
887 h->height_from_caller <= height) {
888 width = h->width_from_caller;
889 height = h->height_from_caller;
892 cr = h->width - width;
893 cb = h->height - height;
895 h->width_from_caller = 0;
896 h->height_from_caller = 0;
899 h->avctx->coded_width = h->width;
900 h->avctx->coded_height = h->height;
901 h->avctx->width = width;
902 h->avctx->height = height;
911 static int h264_slice_header_init(H264Context *h)
913 const SPS *sps = h->ps.sps;
916 ff_set_sar(h->avctx, sps->sar);
917 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
918 &h->chroma_x_shift, &h->chroma_y_shift);
920 if (sps->timing_info_present_flag) {
921 int64_t den = sps->time_scale;
922 if (h->x264_build < 44U)
924 av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
925 sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
928 ff_h264_free_tables(h);
931 h->prev_interlaced_frame = 1;
934 ret = ff_h264_alloc_tables(h);
936 av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
940 if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
941 sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
943 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
944 sps->bit_depth_luma);
945 ret = AVERROR_INVALIDDATA;
949 h->cur_bit_depth_luma =
950 h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
951 h->cur_chroma_format_idc = sps->chroma_format_idc;
952 h->pixel_shift = sps->bit_depth_luma > 8;
953 h->chroma_format_idc = sps->chroma_format_idc;
954 h->bit_depth_luma = sps->bit_depth_luma;
956 ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
957 sps->chroma_format_idc);
958 ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
959 ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
960 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
961 sps->chroma_format_idc);
962 ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
964 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
965 ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
967 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
971 for (i = 0; i < h->nb_slice_ctx; i++) {
972 H264SliceContext *sl = &h->slice_ctx[i];
975 sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
976 sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
977 sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
979 if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
980 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
986 h->context_initialized = 1;
990 ff_h264_free_tables(h);
991 h->context_initialized = 0;
995 static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
998 case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P;
999 case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P;
1000 case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P;
1006 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1009 int needs_reinit = 0, must_reinit, ret;
1012 av_buffer_unref(&h->ps.pps_ref);
1014 h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1016 return AVERROR(ENOMEM);
1017 h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1020 if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
1021 av_buffer_unref(&h->ps.sps_ref);
1023 h->ps.sps_ref = av_buffer_ref(h->ps.sps_list[h->ps.pps->sps_id]);
1025 return AVERROR(ENOMEM);
1026 h->ps.sps = (const SPS*)h->ps.sps_ref->data;
1028 if (h->mb_width != h->ps.sps->mb_width ||
1029 h->mb_height != h->ps.sps->mb_height ||
1030 h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
1031 h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
1035 if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1036 h->chroma_format_idc != h->ps.sps->chroma_format_idc)
1041 must_reinit = (h->context_initialized &&
1042 ( 16*sps->mb_width != h->avctx->coded_width
1043 || 16*sps->mb_height != h->avctx->coded_height
1044 || h->cur_bit_depth_luma != sps->bit_depth_luma
1045 || h->cur_chroma_format_idc != sps->chroma_format_idc
1046 || h->mb_width != sps->mb_width
1047 || h->mb_height != sps->mb_height
1049 if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1050 || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
1053 if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1056 if (!h->setup_finished) {
1057 h->avctx->profile = ff_h264_get_profile(sps);
1058 h->avctx->level = sps->level_idc;
1059 h->avctx->refs = sps->ref_frame_count;
1061 h->mb_width = sps->mb_width;
1062 h->mb_height = sps->mb_height;
1063 h->mb_num = h->mb_width * h->mb_height;
1064 h->mb_stride = h->mb_width + 1;
1066 h->b_stride = h->mb_width * 4;
1068 h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1070 h->width = 16 * h->mb_width;
1071 h->height = 16 * h->mb_height;
1073 ret = init_dimensions(h);
1077 if (sps->video_signal_type_present_flag) {
1078 h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1080 if (sps->colour_description_present_flag) {
1081 if (h->avctx->colorspace != sps->colorspace)
1083 h->avctx->color_primaries = sps->color_primaries;
1084 h->avctx->color_trc = sps->color_trc;
1085 h->avctx->colorspace = sps->colorspace;
1090 if (!h->context_initialized || must_reinit || needs_reinit) {
1091 int flush_changes = h->context_initialized;
1092 h->context_initialized = 0;
1093 if (sl != h->slice_ctx) {
1094 av_log(h->avctx, AV_LOG_ERROR,
1095 "changing width %d -> %d / height %d -> %d on "
1097 h->width, h->avctx->coded_width,
1098 h->height, h->avctx->coded_height,
1099 h->current_slice + 1);
1100 return AVERROR_INVALIDDATA;
1103 av_assert1(first_slice);
1106 ff_h264_flush_change(h);
1108 if ((ret = get_pixel_format(h, 1)) < 0)
1110 h->avctx->pix_fmt = ret;
1112 av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1113 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1115 if ((ret = h264_slice_header_init(h)) < 0) {
1116 av_log(h->avctx, AV_LOG_ERROR,
1117 "h264_slice_header_init() failed\n");
1125 static int h264_export_frame_props(H264Context *h)
1127 const SPS *sps = h->ps.sps;
1128 H264Picture *cur = h->cur_pic_ptr;
1130 cur->f->interlaced_frame = 0;
1131 cur->f->repeat_pict = 0;
1133 /* Signal interlacing information externally. */
1134 /* Prioritize picture timing SEI information over used
1135 * decoding process if it exists. */
1137 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1138 H264SEIPictureTiming *pt = &h->sei.picture_timing;
1139 switch (pt->pic_struct) {
1140 case H264_SEI_PIC_STRUCT_FRAME:
1142 case H264_SEI_PIC_STRUCT_TOP_FIELD:
1143 case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
1144 cur->f->interlaced_frame = 1;
1146 case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
1147 case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
1148 if (FIELD_OR_MBAFF_PICTURE(h))
1149 cur->f->interlaced_frame = 1;
1151 // try to flag soft telecine progressive
1152 cur->f->interlaced_frame = h->prev_interlaced_frame;
1154 case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1155 case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1156 /* Signal the possibility of telecined film externally
1157 * (pic_struct 5,6). From these hints, let the applications
1158 * decide if they apply deinterlacing. */
1159 cur->f->repeat_pict = 1;
1161 case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
1162 cur->f->repeat_pict = 2;
1164 case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
1165 cur->f->repeat_pict = 4;
1169 if ((pt->ct_type & 3) &&
1170 pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
1171 cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1173 /* Derive interlacing flag from used decoding process. */
1174 cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1176 h->prev_interlaced_frame = cur->f->interlaced_frame;
1178 if (cur->field_poc[0] != cur->field_poc[1]) {
1179 /* Derive top_field_first from field pocs. */
1180 cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1182 if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1183 /* Use picture timing SEI information. Even if it is a
1184 * information of a past frame, better than nothing. */
1185 if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
1186 h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1187 cur->f->top_field_first = 1;
1189 cur->f->top_field_first = 0;
1190 } else if (cur->f->interlaced_frame) {
1191 /* Default to top field first when pic_struct_present_flag
1192 * is not set but interlaced frame detected */
1193 cur->f->top_field_first = 1;
1195 /* Most likely progressive */
1196 cur->f->top_field_first = 0;
1200 if (h->sei.frame_packing.present &&
1201 h->sei.frame_packing.arrangement_type <= 6 &&
1202 h->sei.frame_packing.content_interpretation_type > 0 &&
1203 h->sei.frame_packing.content_interpretation_type < 3) {
1204 H264SEIFramePacking *fp = &h->sei.frame_packing;
1205 AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
1207 switch (fp->arrangement_type) {
1208 case H264_SEI_FPA_TYPE_CHECKERBOARD:
1209 stereo->type = AV_STEREO3D_CHECKERBOARD;
1211 case H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN:
1212 stereo->type = AV_STEREO3D_COLUMNS;
1214 case H264_SEI_FPA_TYPE_INTERLEAVE_ROW:
1215 stereo->type = AV_STEREO3D_LINES;
1217 case H264_SEI_FPA_TYPE_SIDE_BY_SIDE:
1218 if (fp->quincunx_sampling_flag)
1219 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1221 stereo->type = AV_STEREO3D_SIDEBYSIDE;
1223 case H264_SEI_FPA_TYPE_TOP_BOTTOM:
1224 stereo->type = AV_STEREO3D_TOPBOTTOM;
1226 case H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL:
1227 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1229 case H264_SEI_FPA_TYPE_2D:
1230 stereo->type = AV_STEREO3D_2D;
1234 if (fp->content_interpretation_type == 2)
1235 stereo->flags = AV_STEREO3D_FLAG_INVERT;
1237 if (fp->arrangement_type == H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) {
1238 if (fp->current_frame_is_frame0_flag)
1239 stereo->view = AV_STEREO3D_VIEW_LEFT;
1241 stereo->view = AV_STEREO3D_VIEW_RIGHT;
1246 if (h->sei.display_orientation.present &&
1247 (h->sei.display_orientation.anticlockwise_rotation ||
1248 h->sei.display_orientation.hflip ||
1249 h->sei.display_orientation.vflip)) {
1250 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1251 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1252 AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
1253 AV_FRAME_DATA_DISPLAYMATRIX,
1254 sizeof(int32_t) * 9);
1256 av_display_rotation_set((int32_t *)rotation->data, angle);
1257 av_display_matrix_flip((int32_t *)rotation->data,
1258 o->hflip, o->vflip);
1262 if (h->sei.afd.present) {
1263 AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
1267 *sd->data = h->sei.afd.active_format_description;
1268 h->sei.afd.present = 0;
1272 if (h->sei.a53_caption.a53_caption) {
1273 H264SEIA53Caption *a53 = &h->sei.a53_caption;
1274 AVFrameSideData *sd = av_frame_new_side_data(cur->f,
1275 AV_FRAME_DATA_A53_CC,
1276 a53->a53_caption_size);
1278 memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
1279 av_freep(&a53->a53_caption);
1280 a53->a53_caption_size = 0;
1281 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
1284 if (h->sei.alternative_transfer.present &&
1285 av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) &&
1286 h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) {
1287 h->avctx->color_trc = cur->f->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics;
1293 static int h264_select_output_frame(H264Context *h)
1295 const SPS *sps = h->ps.sps;
1296 H264Picture *out = h->cur_pic_ptr;
1297 H264Picture *cur = h->cur_pic_ptr;
1298 int i, pics, out_of_order, out_idx;
1300 cur->mmco_reset = h->mmco_reset;
1303 if (sps->bitstream_restriction_flag ||
1304 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
1305 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
1308 for (i = 0; 1; i++) {
1309 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1311 h->last_pocs[i-1] = cur->poc;
1314 h->last_pocs[i-1]= h->last_pocs[i];
1317 out_of_order = MAX_DELAYED_PIC_COUNT - i;
1318 if( cur->f->pict_type == AV_PICTURE_TYPE_B
1319 || (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))
1320 out_of_order = FFMAX(out_of_order, 1);
1321 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1322 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1323 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1324 h->last_pocs[i] = INT_MIN;
1325 h->last_pocs[0] = cur->poc;
1326 cur->mmco_reset = 1;
1327 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1328 int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1329 av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1330 h->avctx->has_b_frames = out_of_order;
1334 while (h->delayed_pic[pics])
1337 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1339 h->delayed_pic[pics++] = cur;
1340 if (cur->reference == 0)
1341 cur->reference = DELAYED_PIC_REF;
1343 out = h->delayed_pic[0];
1345 for (i = 1; h->delayed_pic[i] &&
1346 !h->delayed_pic[i]->f->key_frame &&
1347 !h->delayed_pic[i]->mmco_reset;
1349 if (h->delayed_pic[i]->poc < out->poc) {
1350 out = h->delayed_pic[i];
1353 if (h->avctx->has_b_frames == 0 &&
1354 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1355 h->next_outputed_poc = INT_MIN;
1356 out_of_order = out->poc < h->next_outputed_poc;
1358 if (out_of_order || pics > h->avctx->has_b_frames) {
1359 out->reference &= ~DELAYED_PIC_REF;
1360 for (i = out_idx; h->delayed_pic[i]; i++)
1361 h->delayed_pic[i] = h->delayed_pic[i + 1];
1363 if (!out_of_order && pics > h->avctx->has_b_frames) {
1364 h->next_output_pic = out;
1365 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1366 h->next_outputed_poc = INT_MIN;
1368 h->next_outputed_poc = out->poc;
1370 if (out->recovered) {
1371 // We have reached an recovery point and all frames after it in
1372 // display order are "recovered".
1373 h->frame_recovered |= FRAME_RECOVERED_SEI;
1375 out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
1377 if (!out->recovered) {
1378 if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1379 !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) {
1380 h->next_output_pic = NULL;
1382 out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1386 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1392 /* This function is called right after decoding the slice header for a first
1393 * slice in a field (or a frame). It decides whether we are decoding a new frame
1394 * or a second field in a pair and does the necessary setup.
1396 static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1397 const H2645NAL *nal, int first_slice)
1402 int last_pic_structure, last_pic_droppable, ret;
1404 ret = h264_init_ps(h, sl, first_slice);
1410 last_pic_droppable = h->droppable;
1411 last_pic_structure = h->picture_structure;
1412 h->droppable = (nal->ref_idc == 0);
1413 h->picture_structure = sl->picture_structure;
1415 h->poc.frame_num = sl->frame_num;
1416 h->poc.poc_lsb = sl->poc_lsb;
1417 h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1418 h->poc.delta_poc[0] = sl->delta_poc[0];
1419 h->poc.delta_poc[1] = sl->delta_poc[1];
1421 /* Shorten frame num gaps so we don't have to allocate reference
1422 * frames just to throw them away */
1423 if (h->poc.frame_num != h->poc.prev_frame_num) {
1424 int unwrap_prev_frame_num = h->poc.prev_frame_num;
1425 int max_frame_num = 1 << sps->log2_max_frame_num;
1427 if (unwrap_prev_frame_num > h->poc.frame_num)
1428 unwrap_prev_frame_num -= max_frame_num;
1430 if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1431 unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1432 if (unwrap_prev_frame_num < 0)
1433 unwrap_prev_frame_num += max_frame_num;
1435 h->poc.prev_frame_num = unwrap_prev_frame_num;
1439 /* See if we have a decoded first field looking for a pair...
1440 * Here, we're using that to see if we should mark previously
1441 * decode frames as "finished".
1442 * We have to do that before the "dummy" in-between frame allocation,
1443 * since that can modify h->cur_pic_ptr. */
1444 if (h->first_field) {
1445 int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1446 av_assert0(h->cur_pic_ptr);
1447 av_assert0(h->cur_pic_ptr->f->buf[0]);
1448 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1450 /* Mark old field/frame as completed */
1451 if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1452 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1455 /* figure out if we have a complementary field pair */
1456 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1457 /* Previous field is unmatched. Don't display it, but let it
1458 * remain for reference if marked as such. */
1459 if (last_pic_structure != PICT_FRAME) {
1460 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1461 last_pic_structure == PICT_TOP_FIELD);
1464 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1465 /* This and previous field were reference, but had
1466 * different frame_nums. Consider this field first in
1467 * pair. Throw away previous field except for reference
1469 if (last_pic_structure != PICT_FRAME) {
1470 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1471 last_pic_structure == PICT_TOP_FIELD);
1474 /* Second field in complementary pair */
1475 if (!((last_pic_structure == PICT_TOP_FIELD &&
1476 h->picture_structure == PICT_BOTTOM_FIELD) ||
1477 (last_pic_structure == PICT_BOTTOM_FIELD &&
1478 h->picture_structure == PICT_TOP_FIELD))) {
1479 av_log(h->avctx, AV_LOG_ERROR,
1480 "Invalid field mode combination %d/%d\n",
1481 last_pic_structure, h->picture_structure);
1482 h->picture_structure = last_pic_structure;
1483 h->droppable = last_pic_droppable;
1484 return AVERROR_INVALIDDATA;
1485 } else if (last_pic_droppable != h->droppable) {
1486 avpriv_request_sample(h->avctx,
1487 "Found reference and non-reference fields in the same frame, which");
1488 h->picture_structure = last_pic_structure;
1489 h->droppable = last_pic_droppable;
1490 return AVERROR_PATCHWELCOME;
1496 while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1497 h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1498 H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1499 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1500 h->poc.frame_num, h->poc.prev_frame_num);
1501 if (!sps->gaps_in_frame_num_allowed_flag)
1502 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1503 h->last_pocs[i] = INT_MIN;
1504 ret = h264_frame_start(h);
1510 h->poc.prev_frame_num++;
1511 h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1512 h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1513 h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag;
1514 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1515 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1517 h->explicit_ref_marking = 0;
1518 ret = ff_h264_execute_ref_pic_marking(h);
1519 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1521 /* Error concealment: If a ref is missing, copy the previous ref
1523 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1524 * many assumptions about there being no actual duplicates.
1525 * FIXME: This does not copy padding for out-of-frame motion
1526 * vectors. Given we are concealing a lost frame, this probably
1527 * is not noticeable by comparison, but it should be fixed. */
1528 if (h->short_ref_count) {
1530 h->short_ref[0]->f->width == prev->f->width &&
1531 h->short_ref[0]->f->height == prev->f->height &&
1532 h->short_ref[0]->f->format == prev->f->format) {
1533 ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1534 if (prev->field_picture)
1535 ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1536 av_image_copy(h->short_ref[0]->f->data,
1537 h->short_ref[0]->f->linesize,
1538 (const uint8_t **)prev->f->data,
1543 h->short_ref[0]->poc = prev->poc + 2;
1545 h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1549 /* See if we have a decoded first field looking for a pair...
1550 * We're using that to see whether to continue decoding in that
1551 * frame, or to allocate a new one. */
1552 if (h->first_field) {
1553 av_assert0(h->cur_pic_ptr);
1554 av_assert0(h->cur_pic_ptr->f->buf[0]);
1555 assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1557 /* figure out if we have a complementary field pair */
1558 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1559 /* Previous field is unmatched. Don't display it, but let it
1560 * remain for reference if marked as such. */
1561 h->missing_fields ++;
1562 h->cur_pic_ptr = NULL;
1563 h->first_field = FIELD_PICTURE(h);
1565 h->missing_fields = 0;
1566 if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1567 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1568 h->picture_structure==PICT_BOTTOM_FIELD);
1569 /* This and the previous field had different frame_nums.
1570 * Consider this field first in pair. Throw away previous
1571 * one except for reference purposes. */
1573 h->cur_pic_ptr = NULL;
1574 } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) {
1575 /* This frame was already output, we cannot draw into it
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 ret = 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);
1615 memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1616 h->nb_mmco = sl->nb_mmco;
1617 h->explicit_ref_marking = sl->explicit_ref_marking;
1619 h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1621 if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1622 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1624 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1625 h->valid_recovery_point = 1;
1627 if ( h->recovery_frame < 0
1628 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1629 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1631 if (!h->valid_recovery_point)
1632 h->recovery_frame = h->poc.frame_num;
1636 h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1638 if (nal->type == H264_NAL_IDR_SLICE ||
1639 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1640 h->recovery_frame = -1;
1641 h->cur_pic_ptr->recovered = 1;
1643 // If we have an IDR, all frames after it in decoded order are
1645 if (nal->type == H264_NAL_IDR_SLICE)
1646 h->frame_recovered |= FRAME_RECOVERED_IDR;
1648 h->cur_pic_ptr->recovered |= h->frame_recovered;
1650 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1653 /* Set the frame properties/side data. Only done for the second field in
1654 * field coded frames, since some SEI information is present for each field
1655 * and is merged by the SEI parsing code. */
1656 if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1657 ret = h264_export_frame_props(h);
1661 ret = h264_select_output_frame(h);
1669 static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1670 const H2645NAL *nal)
1675 unsigned int slice_type, tmp, i;
1676 int field_pic_flag, bottom_field_flag;
1677 int first_slice = sl == h->slice_ctx && !h->current_slice;
1678 int picture_structure;
1681 av_assert0(!h->setup_finished);
1683 sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1685 slice_type = get_ue_golomb_31(&sl->gb);
1686 if (slice_type > 9) {
1687 av_log(h->avctx, AV_LOG_ERROR,
1688 "slice type %d too large at %d\n",
1689 slice_type, sl->first_mb_addr);
1690 return AVERROR_INVALIDDATA;
1692 if (slice_type > 4) {
1694 sl->slice_type_fixed = 1;
1696 sl->slice_type_fixed = 0;
1698 slice_type = ff_h264_golomb_to_pict_type[slice_type];
1699 sl->slice_type = slice_type;
1700 sl->slice_type_nos = slice_type & 3;
1702 if (nal->type == H264_NAL_IDR_SLICE &&
1703 sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1704 av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1705 return AVERROR_INVALIDDATA;
1708 sl->pps_id = get_ue_golomb(&sl->gb);
1709 if (sl->pps_id >= MAX_PPS_COUNT) {
1710 av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1711 return AVERROR_INVALIDDATA;
1713 if (!h->ps.pps_list[sl->pps_id]) {
1714 av_log(h->avctx, AV_LOG_ERROR,
1715 "non-existing PPS %u referenced\n",
1717 return AVERROR_INVALIDDATA;
1719 pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1721 if (!h->ps.sps_list[pps->sps_id]) {
1722 av_log(h->avctx, AV_LOG_ERROR,
1723 "non-existing SPS %u referenced\n", pps->sps_id);
1724 return AVERROR_INVALIDDATA;
1726 sps = (const SPS*)h->ps.sps_list[pps->sps_id]->data;
1728 sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1730 if (h->poc.frame_num != sl->frame_num) {
1731 av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1732 h->poc.frame_num, sl->frame_num);
1733 return AVERROR_INVALIDDATA;
1739 if (sps->frame_mbs_only_flag) {
1740 picture_structure = PICT_FRAME;
1742 if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1743 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1746 field_pic_flag = get_bits1(&sl->gb);
1747 if (field_pic_flag) {
1748 bottom_field_flag = get_bits1(&sl->gb);
1749 picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1751 picture_structure = PICT_FRAME;
1754 sl->picture_structure = picture_structure;
1755 sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1757 if (picture_structure == PICT_FRAME) {
1758 sl->curr_pic_num = sl->frame_num;
1759 sl->max_pic_num = 1 << sps->log2_max_frame_num;
1761 sl->curr_pic_num = 2 * sl->frame_num + 1;
1762 sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1765 if (nal->type == H264_NAL_IDR_SLICE)
1766 get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1768 if (sps->poc_type == 0) {
1769 sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1771 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1772 sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1775 if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1776 sl->delta_poc[0] = get_se_golomb(&sl->gb);
1778 if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1779 sl->delta_poc[1] = get_se_golomb(&sl->gb);
1782 sl->redundant_pic_count = 0;
1783 if (pps->redundant_pic_cnt_present)
1784 sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1786 if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1787 sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1789 ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
1790 &sl->gb, pps, sl->slice_type_nos,
1791 picture_structure, h->avctx);
1795 if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1796 ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx);
1798 sl->ref_count[1] = sl->ref_count[0] = 0;
1803 sl->pwt.use_weight = 0;
1804 for (i = 0; i < 2; i++) {
1805 sl->pwt.luma_weight_flag[i] = 0;
1806 sl->pwt.chroma_weight_flag[i] = 0;
1808 if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1809 (pps->weighted_bipred_idc == 1 &&
1810 sl->slice_type_nos == AV_PICTURE_TYPE_B)) {
1811 ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1812 sl->slice_type_nos, &sl->pwt,
1813 picture_structure, h->avctx);
1818 sl->explicit_ref_marking = 0;
1820 ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1821 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1822 return AVERROR_INVALIDDATA;
1825 if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1826 tmp = get_ue_golomb_31(&sl->gb);
1828 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1829 return AVERROR_INVALIDDATA;
1831 sl->cabac_init_idc = tmp;
1834 sl->last_qscale_diff = 0;
1835 tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1836 if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1837 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1838 return AVERROR_INVALIDDATA;
1841 sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1842 sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1843 // FIXME qscale / qp ... stuff
1844 if (sl->slice_type == AV_PICTURE_TYPE_SP)
1845 get_bits1(&sl->gb); /* sp_for_switch_flag */
1846 if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1847 sl->slice_type == AV_PICTURE_TYPE_SI)
1848 get_se_golomb(&sl->gb); /* slice_qs_delta */
1850 sl->deblocking_filter = 1;
1851 sl->slice_alpha_c0_offset = 0;
1852 sl->slice_beta_offset = 0;
1853 if (pps->deblocking_filter_parameters_present) {
1854 tmp = get_ue_golomb_31(&sl->gb);
1856 av_log(h->avctx, AV_LOG_ERROR,
1857 "deblocking_filter_idc %u out of range\n", tmp);
1858 return AVERROR_INVALIDDATA;
1860 sl->deblocking_filter = tmp;
1861 if (sl->deblocking_filter < 2)
1862 sl->deblocking_filter ^= 1; // 1<->0
1864 if (sl->deblocking_filter) {
1865 int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1866 int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1867 if (slice_alpha_c0_offset_div2 > 6 ||
1868 slice_alpha_c0_offset_div2 < -6 ||
1869 slice_beta_offset_div2 > 6 ||
1870 slice_beta_offset_div2 < -6) {
1871 av_log(h->avctx, AV_LOG_ERROR,
1872 "deblocking filter parameters %d %d out of range\n",
1873 slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1874 return AVERROR_INVALIDDATA;
1876 sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1877 sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1884 /* do all the per-slice initialization needed before we can start decoding the
1886 static int h264_slice_init(H264Context *h, H264SliceContext *sl,
1887 const H2645NAL *nal)
1891 if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1892 av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1893 return AVERROR_INVALIDDATA;
1896 av_assert1(h->mb_num == h->mb_width * h->mb_height);
1897 if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1898 sl->first_mb_addr >= h->mb_num) {
1899 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1900 return AVERROR_INVALIDDATA;
1902 sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1903 sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1904 FIELD_OR_MBAFF_PICTURE(h);
1905 if (h->picture_structure == PICT_BOTTOM_FIELD)
1906 sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1907 av_assert1(sl->mb_y < h->mb_height);
1909 ret = ff_h264_build_ref_list(h, sl);
1913 if (h->ps.pps->weighted_bipred_idc == 2 &&
1914 sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1915 implicit_weight_table(h, sl, -1);
1916 if (FRAME_MBAFF(h)) {
1917 implicit_weight_table(h, sl, 0);
1918 implicit_weight_table(h, sl, 1);
1922 if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
1923 ff_h264_direct_dist_scale_factor(h, sl);
1924 if (!h->setup_finished)
1925 ff_h264_direct_ref_list_init(h, sl);
1927 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1928 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
1929 h->nal_unit_type != H264_NAL_IDR_SLICE) ||
1930 (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA &&
1931 sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
1932 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
1933 sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
1934 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
1936 sl->deblocking_filter = 0;
1938 if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
1939 if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
1940 /* Cheat slightly for speed:
1941 * Do not bother to deblock across slices. */
1942 sl->deblocking_filter = 2;
1944 h->postpone_filter = 1;
1947 sl->qp_thresh = 15 -
1948 FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
1950 h->ps.pps->chroma_qp_index_offset[0],
1951 h->ps.pps->chroma_qp_index_offset[1]) +
1952 6 * (h->ps.sps->bit_depth_luma - 8);
1954 sl->slice_num = ++h->current_slice;
1957 h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
1958 if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
1959 && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
1960 && sl->slice_num >= MAX_SLICES) {
1961 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
1962 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);
1965 for (j = 0; j < 2; j++) {
1967 int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
1968 for (i = 0; i < 16; i++) {
1970 if (j < sl->list_count && i < sl->ref_count[j] &&
1971 sl->ref_list[j][i].parent->f->buf[0]) {
1973 AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
1974 for (k = 0; k < h->short_ref_count; k++)
1975 if (h->short_ref[k]->f->buf[0]->buffer == buf) {
1979 for (k = 0; k < h->long_ref_count; k++)
1980 if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
1981 id_list[i] = h->short_ref_count + k;
1989 for (i = 0; i < 16; i++)
1990 ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
1992 ref2frm[18 + 1] = -1;
1993 for (i = 16; i < 48; i++)
1994 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
1995 (sl->ref_list[j][i].reference & 3);
1998 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
1999 av_log(h->avctx, AV_LOG_DEBUG,
2000 "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",
2002 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2003 sl->mb_y * h->mb_width + sl->mb_x,
2004 av_get_picture_type_char(sl->slice_type),
2005 sl->slice_type_fixed ? " fix" : "",
2006 nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2008 h->cur_pic_ptr->field_poc[0],
2009 h->cur_pic_ptr->field_poc[1],
2010 sl->ref_count[0], sl->ref_count[1],
2012 sl->deblocking_filter,
2013 sl->slice_alpha_c0_offset, sl->slice_beta_offset,
2015 sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2016 sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2022 int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
2024 H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
2025 int first_slice = sl == h->slice_ctx && !h->current_slice;
2030 ret = h264_slice_header_parse(h, sl, nal);
2034 // discard redundant pictures
2035 if (sl->redundant_pic_count > 0) {
2036 sl->ref_count[0] = sl->ref_count[1] = 0;
2040 if (sl->first_mb_addr == 0 || !h->current_slice) {
2041 if (h->setup_finished) {
2042 av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2043 return AVERROR_INVALIDDATA;
2047 if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2048 if (h->current_slice) {
2049 // this slice starts a new field
2050 // first decode any pending queued slices
2051 if (h->nb_slice_ctx_queued) {
2052 H264SliceContext tmp_ctx;
2054 ret = ff_h264_execute_decode_slices(h);
2055 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2058 memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2059 memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2060 memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2064 if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2065 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2068 } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2069 av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2070 ret = ff_h264_field_end(h, h->slice_ctx, 1);
2071 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2072 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2073 h->cur_pic_ptr = NULL;
2077 return AVERROR_INVALIDDATA;
2080 if (!h->first_field) {
2081 if (h->cur_pic_ptr && !h->droppable) {
2082 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2083 h->picture_structure == PICT_BOTTOM_FIELD);
2085 h->cur_pic_ptr = NULL;
2089 if (!h->current_slice)
2090 av_assert0(sl == h->slice_ctx);
2092 if (h->current_slice == 0 && !h->first_field) {
2094 (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2095 (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2096 (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2097 (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) ||
2098 h->avctx->skip_frame >= AVDISCARD_ALL) {
2104 const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2106 if (h->ps.pps->sps_id != pps->sps_id ||
2107 h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2108 (h->setup_finished && h->ps.pps != pps)*/) {
2109 av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2110 return AVERROR_INVALIDDATA;
2112 if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
2113 av_log(h->avctx, AV_LOG_ERROR,
2114 "SPS changed in the middle of the frame\n");
2115 return AVERROR_INVALIDDATA;
2119 if (h->current_slice == 0) {
2120 ret = h264_field_start(h, sl, nal, first_slice);
2124 if (h->picture_structure != sl->picture_structure ||
2125 h->droppable != (nal->ref_idc == 0)) {
2126 av_log(h->avctx, AV_LOG_ERROR,
2127 "Changing field mode (%d -> %d) between slices is not allowed\n",
2128 h->picture_structure, sl->picture_structure);
2129 return AVERROR_INVALIDDATA;
2130 } else if (!h->cur_pic_ptr) {
2131 av_log(h->avctx, AV_LOG_ERROR,
2132 "unset cur_pic_ptr on slice %d\n",
2133 h->current_slice + 1);
2134 return AVERROR_INVALIDDATA;
2138 ret = h264_slice_init(h, sl, nal);
2142 h->nb_slice_ctx_queued++;
2147 int ff_h264_get_slice_type(const H264SliceContext *sl)
2149 switch (sl->slice_type) {
2150 case AV_PICTURE_TYPE_P:
2152 case AV_PICTURE_TYPE_B:
2154 case AV_PICTURE_TYPE_I:
2156 case AV_PICTURE_TYPE_SP:
2158 case AV_PICTURE_TYPE_SI:
2161 return AVERROR_INVALIDDATA;
2165 static av_always_inline void fill_filter_caches_inter(const H264Context *h,
2166 H264SliceContext *sl,
2167 int mb_type, int top_xy,
2168 int left_xy[LEFT_MBS],
2170 int left_type[LEFT_MBS],
2171 int mb_xy, int list)
2173 int b_stride = h->b_stride;
2174 int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2175 int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2176 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2177 if (USES_LIST(top_type, list)) {
2178 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2179 const int b8_xy = 4 * top_xy + 2;
2180 const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2181 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2182 ref_cache[0 - 1 * 8] =
2183 ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2184 ref_cache[2 - 1 * 8] =
2185 ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2187 AV_ZERO128(mv_dst - 1 * 8);
2188 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2191 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2192 if (USES_LIST(left_type[LTOP], list)) {
2193 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2194 const int b8_xy = 4 * left_xy[LTOP] + 1;
2195 const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2196 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2197 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2198 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2199 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2201 ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2202 ref_cache[-1 + 16] =
2203 ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2205 AV_ZERO32(mv_dst - 1 + 0);
2206 AV_ZERO32(mv_dst - 1 + 8);
2207 AV_ZERO32(mv_dst - 1 + 16);
2208 AV_ZERO32(mv_dst - 1 + 24);
2211 ref_cache[-1 + 16] =
2212 ref_cache[-1 + 24] = LIST_NOT_USED;
2217 if (!USES_LIST(mb_type, list)) {
2218 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2219 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2220 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2221 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2222 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2227 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2228 const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2229 uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2230 uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2231 AV_WN32A(&ref_cache[0 * 8], ref01);
2232 AV_WN32A(&ref_cache[1 * 8], ref01);
2233 AV_WN32A(&ref_cache[2 * 8], ref23);
2234 AV_WN32A(&ref_cache[3 * 8], ref23);
2238 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2239 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2240 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2241 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2242 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2247 * @return non zero if the loop filter can be skipped
2249 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2251 const int mb_xy = sl->mb_xy;
2252 int top_xy, left_xy[LEFT_MBS];
2253 int top_type, left_type[LEFT_MBS];
2257 top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2259 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2260 if (FRAME_MBAFF(h)) {
2261 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2262 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2264 if (left_mb_field_flag != curr_mb_field_flag)
2265 left_xy[LTOP] -= h->mb_stride;
2267 if (curr_mb_field_flag)
2268 top_xy += h->mb_stride &
2269 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2270 if (left_mb_field_flag != curr_mb_field_flag)
2271 left_xy[LBOT] += h->mb_stride;
2275 sl->top_mb_xy = top_xy;
2276 sl->left_mb_xy[LTOP] = left_xy[LTOP];
2277 sl->left_mb_xy[LBOT] = left_xy[LBOT];
2279 /* For sufficiently low qp, filtering wouldn't do anything.
2280 * This is a conservative estimate: could also check beta_offset
2281 * and more accurate chroma_qp. */
2282 int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2283 int qp = h->cur_pic.qscale_table[mb_xy];
2284 if (qp <= qp_thresh &&
2285 (left_xy[LTOP] < 0 ||
2286 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2288 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2289 if (!FRAME_MBAFF(h))
2291 if ((left_xy[LTOP] < 0 ||
2292 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2293 (top_xy < h->mb_stride ||
2294 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2299 top_type = h->cur_pic.mb_type[top_xy];
2300 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2301 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2302 if (sl->deblocking_filter == 2) {
2303 if (h->slice_table[top_xy] != sl->slice_num)
2305 if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2306 left_type[LTOP] = left_type[LBOT] = 0;
2308 if (h->slice_table[top_xy] == 0xFFFF)
2310 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2311 left_type[LTOP] = left_type[LBOT] = 0;
2313 sl->top_type = top_type;
2314 sl->left_type[LTOP] = left_type[LTOP];
2315 sl->left_type[LBOT] = left_type[LBOT];
2317 if (IS_INTRA(mb_type))
2320 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2321 top_type, left_type, mb_xy, 0);
2322 if (sl->list_count == 2)
2323 fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2324 top_type, left_type, mb_xy, 1);
2326 nnz = h->non_zero_count[mb_xy];
2327 nnz_cache = sl->non_zero_count_cache;
2328 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2329 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2330 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2331 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2332 sl->cbp = h->cbp_table[mb_xy];
2335 nnz = h->non_zero_count[top_xy];
2336 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2339 if (left_type[LTOP]) {
2340 nnz = h->non_zero_count[left_xy[LTOP]];
2341 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2342 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2343 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2344 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2347 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2348 * from what the loop filter needs */
2349 if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2350 if (IS_8x8DCT(top_type)) {
2351 nnz_cache[4 + 8 * 0] =
2352 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2353 nnz_cache[6 + 8 * 0] =
2354 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2356 if (IS_8x8DCT(left_type[LTOP])) {
2357 nnz_cache[3 + 8 * 1] =
2358 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2360 if (IS_8x8DCT(left_type[LBOT])) {
2361 nnz_cache[3 + 8 * 3] =
2362 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2365 if (IS_8x8DCT(mb_type)) {
2366 nnz_cache[scan8[0]] =
2367 nnz_cache[scan8[1]] =
2368 nnz_cache[scan8[2]] =
2369 nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2371 nnz_cache[scan8[0 + 4]] =
2372 nnz_cache[scan8[1 + 4]] =
2373 nnz_cache[scan8[2 + 4]] =
2374 nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2376 nnz_cache[scan8[0 + 8]] =
2377 nnz_cache[scan8[1 + 8]] =
2378 nnz_cache[scan8[2 + 8]] =
2379 nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2381 nnz_cache[scan8[0 + 12]] =
2382 nnz_cache[scan8[1 + 12]] =
2383 nnz_cache[scan8[2 + 12]] =
2384 nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2391 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2393 uint8_t *dest_y, *dest_cb, *dest_cr;
2394 int linesize, uvlinesize, mb_x, mb_y;
2395 const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2396 const int old_slice_type = sl->slice_type;
2397 const int pixel_shift = h->pixel_shift;
2398 const int block_h = 16 >> h->chroma_y_shift;
2400 if (h->postpone_filter)
2403 if (sl->deblocking_filter) {
2404 for (mb_x = start_x; mb_x < end_x; mb_x++)
2405 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2407 mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2408 mb_type = h->cur_pic.mb_type[mb_xy];
2412 sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2416 dest_y = h->cur_pic.f->data[0] +
2417 ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2418 dest_cb = h->cur_pic.f->data[1] +
2419 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2420 mb_y * sl->uvlinesize * block_h;
2421 dest_cr = h->cur_pic.f->data[2] +
2422 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2423 mb_y * sl->uvlinesize * block_h;
2424 // FIXME simplify above
2427 linesize = sl->mb_linesize = sl->linesize * 2;
2428 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2429 if (mb_y & 1) { // FIXME move out of this function?
2430 dest_y -= sl->linesize * 15;
2431 dest_cb -= sl->uvlinesize * (block_h - 1);
2432 dest_cr -= sl->uvlinesize * (block_h - 1);
2435 linesize = sl->mb_linesize = sl->linesize;
2436 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2438 backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2440 if (fill_filter_caches(h, sl, mb_type))
2442 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2443 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2445 if (FRAME_MBAFF(h)) {
2446 ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2447 linesize, uvlinesize);
2449 ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2450 dest_cr, linesize, uvlinesize);
2454 sl->slice_type = old_slice_type;
2456 sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2457 sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2458 sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2461 static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
2463 const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2464 int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2465 h->cur_pic.mb_type[mb_xy - 1] :
2466 (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2467 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2468 sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2472 * Draw edges and report progress for the last MB row.
2474 static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
2476 int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2477 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2478 int height = 16 << FRAME_MBAFF(h);
2479 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2481 if (sl->deblocking_filter) {
2482 if ((top + height) >= pic_height)
2483 height += deblock_border;
2484 top -= deblock_border;
2487 if (top >= pic_height || (top + height) < 0)
2490 height = FFMIN(height, pic_height - top);
2492 height = top + height;
2496 ff_h264_draw_horiz_band(h, sl, top, height);
2498 if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2501 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2502 h->picture_structure == PICT_BOTTOM_FIELD);
2505 static void er_add_slice(H264SliceContext *sl,
2506 int startx, int starty,
2507 int endx, int endy, int status)
2509 if (!sl->h264->enable_er)
2512 if (CONFIG_ERROR_RESILIENCE) {
2513 ERContext *er = &sl->h264->slice_ctx[0].er;
2515 ff_er_add_slice(er, startx, starty, endx, endy, status);
2519 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2521 H264SliceContext *sl = arg;
2522 const H264Context *h = sl->h264;
2523 int lf_x_start = sl->mb_x;
2524 int orig_deblock = sl->deblocking_filter;
2527 sl->linesize = h->cur_pic_ptr->f->linesize[0];
2528 sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2530 ret = alloc_scratch_buffers(sl, sl->linesize);
2534 sl->mb_skip_run = -1;
2536 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2538 if (h->postpone_filter)
2539 sl->deblocking_filter = 0;
2541 sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2542 (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2544 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
2545 const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2547 int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2548 prev_status &= ~ VP_START;
2549 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2550 h->slice_ctx[0].er.error_occurred = 1;
2554 if (h->ps.pps->cabac) {
2556 align_get_bits(&sl->gb);
2559 ret = ff_init_cabac_decoder(&sl->cabac,
2560 sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2561 (get_bits_left(&sl->gb) + 7) / 8);
2565 ff_h264_init_cabac_states(h, sl);
2570 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2571 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2572 sl->next_slice_idx);
2573 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2574 sl->mb_y, ER_MB_ERROR);
2575 return AVERROR_INVALIDDATA;
2578 ret = ff_h264_decode_mb_cabac(h, sl);
2579 // STOP_TIMER("decode_mb_cabac")
2582 ff_h264_hl_decode_mb(h, sl);
2584 // FIXME optimal? or let mb_decode decode 16x32 ?
2585 if (ret >= 0 && FRAME_MBAFF(h)) {
2588 ret = ff_h264_decode_mb_cabac(h, sl);
2591 ff_h264_hl_decode_mb(h, sl);
2594 eos = get_cabac_terminate(&sl->cabac);
2596 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2597 sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2598 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2599 sl->mb_y, ER_MB_END);
2600 if (sl->mb_x >= lf_x_start)
2601 loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2604 if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2605 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2606 if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2607 av_log(h->avctx, AV_LOG_ERROR,
2608 "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2610 sl->cabac.bytestream_end - sl->cabac.bytestream);
2611 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2612 sl->mb_y, ER_MB_ERROR);
2613 return AVERROR_INVALIDDATA;
2616 if (++sl->mb_x >= h->mb_width) {
2617 loop_filter(h, sl, lf_x_start, sl->mb_x);
2618 sl->mb_x = lf_x_start = 0;
2619 decode_finish_row(h, sl);
2621 if (FIELD_OR_MBAFF_PICTURE(h)) {
2623 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2624 predict_field_decoding_flag(h, sl);
2628 if (eos || sl->mb_y >= h->mb_height) {
2629 ff_tlog(h->avctx, "slice end %d %d\n",
2630 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2631 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2632 sl->mb_y, ER_MB_END);
2633 if (sl->mb_x > lf_x_start)
2634 loop_filter(h, sl, lf_x_start, sl->mb_x);
2642 if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2643 av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2644 sl->next_slice_idx);
2645 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2646 sl->mb_y, ER_MB_ERROR);
2647 return AVERROR_INVALIDDATA;
2650 ret = ff_h264_decode_mb_cavlc(h, sl);
2653 ff_h264_hl_decode_mb(h, sl);
2655 // FIXME optimal? or let mb_decode decode 16x32 ?
2656 if (ret >= 0 && FRAME_MBAFF(h)) {
2658 ret = ff_h264_decode_mb_cavlc(h, sl);
2661 ff_h264_hl_decode_mb(h, sl);
2666 av_log(h->avctx, AV_LOG_ERROR,
2667 "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2668 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2669 sl->mb_y, ER_MB_ERROR);
2673 if (++sl->mb_x >= h->mb_width) {
2674 loop_filter(h, sl, lf_x_start, sl->mb_x);
2675 sl->mb_x = lf_x_start = 0;
2676 decode_finish_row(h, sl);
2678 if (FIELD_OR_MBAFF_PICTURE(h)) {
2680 if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2681 predict_field_decoding_flag(h, sl);
2683 if (sl->mb_y >= h->mb_height) {
2684 ff_tlog(h->avctx, "slice end %d %d\n",
2685 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2687 if ( get_bits_left(&sl->gb) == 0
2688 || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2689 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2690 sl->mb_x - 1, sl->mb_y, ER_MB_END);
2694 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2695 sl->mb_x, sl->mb_y, ER_MB_END);
2697 return AVERROR_INVALIDDATA;
2702 if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2703 ff_tlog(h->avctx, "slice end %d %d\n",
2704 get_bits_count(&sl->gb), sl->gb.size_in_bits);
2706 if (get_bits_left(&sl->gb) == 0) {
2707 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2708 sl->mb_x - 1, 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);
2714 er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2715 sl->mb_y, ER_MB_ERROR);
2717 return AVERROR_INVALIDDATA;
2724 sl->deblocking_filter = orig_deblock;
2729 * Call decode_slice() for each context.
2731 * @param h h264 master context
2733 int ff_h264_execute_decode_slices(H264Context *h)
2735 AVCodecContext *const avctx = h->avctx;
2736 H264SliceContext *sl;
2737 int context_count = h->nb_slice_ctx_queued;
2741 h->slice_ctx[0].next_slice_idx = INT_MAX;
2743 if (h->avctx->hwaccel || context_count < 1)
2746 av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2748 if (context_count == 1) {
2750 h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2751 h->postpone_filter = 0;
2753 ret = decode_slice(avctx, &h->slice_ctx[0]);
2754 h->mb_y = h->slice_ctx[0].mb_y;
2758 av_assert0(context_count > 0);
2759 for (i = 0; i < context_count; i++) {
2760 int next_slice_idx = h->mb_width * h->mb_height;
2763 sl = &h->slice_ctx[i];
2764 if (CONFIG_ERROR_RESILIENCE) {
2765 sl->er.error_count = 0;
2768 /* make sure none of those slices overlap */
2769 slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2770 for (j = 0; j < context_count; j++) {
2771 H264SliceContext *sl2 = &h->slice_ctx[j];
2772 int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2774 if (i == j || slice_idx2 < slice_idx)
2776 next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2778 sl->next_slice_idx = next_slice_idx;
2781 avctx->execute(avctx, decode_slice, h->slice_ctx,
2782 NULL, context_count, sizeof(h->slice_ctx[0]));
2784 /* pull back stuff from slices to master context */
2785 sl = &h->slice_ctx[context_count - 1];
2787 if (CONFIG_ERROR_RESILIENCE) {
2788 for (i = 1; i < context_count; i++)
2789 h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
2792 if (h->postpone_filter) {
2793 h->postpone_filter = 0;
2795 for (i = 0; i < context_count; i++) {
2798 sl = &h->slice_ctx[i];
2799 y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2800 x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2802 for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2804 loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2805 j == y_end - 1 ? x_end : h->mb_width);
2812 h->nb_slice_ctx_queued = 0;