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 #define UNCHECKED_BITSTREAM_READER 1
30 #include "libavutil/avassert.h"
31 #include "libavutil/display.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/stereo3d.h"
35 #include "libavutil/timer.h"
37 #include "bytestream.h"
39 #include "cabac_functions.h"
40 #include "error_resilience.h"
43 #include "h2645_parse.h"
45 #include "h264chroma.h"
46 #include "h264_mvpred.h"
50 #include "mpegutils.h"
52 #include "rectangle.h"
54 #include "vdpau_compat.h"
56 static int h264_decode_end(AVCodecContext *avctx);
58 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
60 int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
62 H264Context *h = avctx->priv_data;
63 return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
66 static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
68 int mb_x, int mb_y, int mb_intra, int mb_skipped)
70 H264Context *h = opaque;
71 H264SliceContext *sl = &h->slice_ctx[0];
75 sl->mb_xy = mb_x + mb_y * h->mb_stride;
76 memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
78 /* FIXME: It is possible albeit uncommon that slice references
79 * differ between slices. We take the easy approach and ignore
80 * it for now. If this turns out to have any relevance in
81 * practice then correct remapping should be added. */
82 if (ref >= sl->ref_count[0])
84 if (!sl->ref_list[0][ref].data[0]) {
85 av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
88 if ((sl->ref_list[0][ref].reference&3) != 3) {
89 av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
92 fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
94 fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
95 fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
96 pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
98 sl->mb_field_decoding_flag = 0;
99 ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
102 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
105 AVCodecContext *avctx = h->avctx;
106 const AVFrame *src = h->cur_pic.f;
107 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
108 int vshift = desc->log2_chroma_h;
109 const int field_pic = h->picture_structure != PICT_FRAME;
115 height = FFMIN(height, avctx->height - y);
117 if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
120 if (avctx->draw_horiz_band) {
121 int offset[AV_NUM_DATA_POINTERS];
124 offset[0] = y * src->linesize[0];
126 offset[2] = (y >> vshift) * src->linesize[1];
127 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
132 avctx->draw_horiz_band(avctx, src, offset,
133 y, h->picture_structure, height);
137 void ff_h264_free_tables(H264Context *h)
141 av_freep(&h->intra4x4_pred_mode);
142 av_freep(&h->chroma_pred_mode_table);
143 av_freep(&h->cbp_table);
144 av_freep(&h->mvd_table[0]);
145 av_freep(&h->mvd_table[1]);
146 av_freep(&h->direct_table);
147 av_freep(&h->non_zero_count);
148 av_freep(&h->slice_table_base);
149 h->slice_table = NULL;
150 av_freep(&h->list_counts);
152 av_freep(&h->mb2b_xy);
153 av_freep(&h->mb2br_xy);
155 av_buffer_pool_uninit(&h->qscale_table_pool);
156 av_buffer_pool_uninit(&h->mb_type_pool);
157 av_buffer_pool_uninit(&h->motion_val_pool);
158 av_buffer_pool_uninit(&h->ref_index_pool);
160 for (i = 0; i < h->nb_slice_ctx; i++) {
161 H264SliceContext *sl = &h->slice_ctx[i];
163 av_freep(&sl->dc_val_base);
164 av_freep(&sl->er.mb_index2xy);
165 av_freep(&sl->er.error_status_table);
166 av_freep(&sl->er.er_temp_buffer);
168 av_freep(&sl->bipred_scratchpad);
169 av_freep(&sl->edge_emu_buffer);
170 av_freep(&sl->top_borders[0]);
171 av_freep(&sl->top_borders[1]);
173 sl->bipred_scratchpad_allocated = 0;
174 sl->edge_emu_buffer_allocated = 0;
175 sl->top_borders_allocated[0] = 0;
176 sl->top_borders_allocated[1] = 0;
180 int ff_h264_alloc_tables(H264Context *h)
182 const int big_mb_num = h->mb_stride * (h->mb_height + 1);
183 const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
186 FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
187 row_mb_num, 8 * sizeof(uint8_t), fail)
188 h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
190 FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
191 big_mb_num * 48 * sizeof(uint8_t), fail)
192 FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
193 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
194 FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
195 big_mb_num * sizeof(uint16_t), fail)
196 FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
197 big_mb_num * sizeof(uint8_t), fail)
198 FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0],
199 row_mb_num, 16 * sizeof(uint8_t), fail);
200 FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1],
201 row_mb_num, 16 * sizeof(uint8_t), fail);
202 h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
203 h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
205 FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table,
206 4 * big_mb_num * sizeof(uint8_t), fail);
207 FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts,
208 big_mb_num * sizeof(uint8_t), fail)
210 memset(h->slice_table_base, -1,
211 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
212 h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
214 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
215 big_mb_num * sizeof(uint32_t), fail);
216 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy,
217 big_mb_num * sizeof(uint32_t), fail);
218 for (y = 0; y < h->mb_height; y++)
219 for (x = 0; x < h->mb_width; x++) {
220 const int mb_xy = x + y * h->mb_stride;
221 const int b_xy = 4 * x + 4 * y * h->b_stride;
223 h->mb2b_xy[mb_xy] = b_xy;
224 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
230 ff_h264_free_tables(h);
231 return AVERROR(ENOMEM);
236 * Allocate buffers which are not shared amongst multiple threads.
238 int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
240 ERContext *er = &sl->er;
241 int mb_array_size = h->mb_height * h->mb_stride;
242 int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
243 int c_size = h->mb_stride * (h->mb_height + 1);
244 int yc_size = y_size + 2 * c_size;
247 sl->ref_cache[0][scan8[5] + 1] =
248 sl->ref_cache[0][scan8[7] + 1] =
249 sl->ref_cache[0][scan8[13] + 1] =
250 sl->ref_cache[1][scan8[5] + 1] =
251 sl->ref_cache[1][scan8[7] + 1] =
252 sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
254 if (sl != h->slice_ctx) {
255 memset(er, 0, sizeof(*er));
257 if (CONFIG_ERROR_RESILIENCE) {
260 er->avctx = h->avctx;
261 er->decode_mb = h264_er_decode_mb;
263 er->quarter_sample = 1;
265 er->mb_num = h->mb_num;
266 er->mb_width = h->mb_width;
267 er->mb_height = h->mb_height;
268 er->mb_stride = h->mb_stride;
269 er->b8_stride = h->mb_width * 2 + 1;
271 // error resilience code looks cleaner with this
272 FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy,
273 (h->mb_num + 1) * sizeof(int), fail);
275 for (y = 0; y < h->mb_height; y++)
276 for (x = 0; x < h->mb_width; x++)
277 er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
279 er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
280 h->mb_stride + h->mb_width;
282 FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table,
283 mb_array_size * sizeof(uint8_t), fail);
285 FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer,
286 h->mb_height * h->mb_stride, fail);
288 FF_ALLOCZ_OR_GOTO(h->avctx, sl->dc_val_base,
289 yc_size * sizeof(int16_t), fail);
290 er->dc_val[0] = sl->dc_val_base + h->mb_width * 2 + 2;
291 er->dc_val[1] = sl->dc_val_base + y_size + h->mb_stride + 1;
292 er->dc_val[2] = er->dc_val[1] + c_size;
293 for (i = 0; i < yc_size; i++)
294 sl->dc_val_base[i] = 1024;
300 return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
303 static int h264_init_context(AVCodecContext *avctx, H264Context *h)
308 h->backup_width = -1;
309 h->backup_height = -1;
310 h->backup_pix_fmt = AV_PIX_FMT_NONE;
311 h->current_sps_id = -1;
312 h->cur_chroma_format_idc = -1;
314 h->picture_structure = PICT_FRAME;
315 h->workaround_bugs = avctx->workaround_bugs;
316 h->flags = avctx->flags;
317 h->poc.prev_poc_msb = 1 << 16;
318 h->recovery_frame = -1;
319 h->frame_recovered = 0;
320 h->poc.prev_frame_num = -1;
321 h->sei.frame_packing.frame_packing_arrangement_cancel_flag = -1;
322 h->sei.unregistered.x264_build = -1;
324 h->next_outputed_poc = INT_MIN;
325 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
326 h->last_pocs[i] = INT_MIN;
328 ff_h264_sei_uninit(&h->sei);
330 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
332 h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
333 h->slice_ctx = av_mallocz_array(h->nb_slice_ctx, sizeof(*h->slice_ctx));
336 return AVERROR(ENOMEM);
339 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
340 h->DPB[i].f = av_frame_alloc();
342 return AVERROR(ENOMEM);
345 h->cur_pic.f = av_frame_alloc();
347 return AVERROR(ENOMEM);
349 h->last_pic_for_ec.f = av_frame_alloc();
350 if (!h->last_pic_for_ec.f)
351 return AVERROR(ENOMEM);
353 for (i = 0; i < h->nb_slice_ctx; i++)
354 h->slice_ctx[i].h264 = h;
359 static av_cold int h264_decode_end(AVCodecContext *avctx)
361 H264Context *h = avctx->priv_data;
364 ff_h264_remove_all_refs(h);
365 ff_h264_free_tables(h);
367 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
368 ff_h264_unref_picture(h, &h->DPB[i]);
369 av_frame_free(&h->DPB[i].f);
371 memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
373 h->cur_pic_ptr = NULL;
375 av_freep(&h->slice_ctx);
378 ff_h264_sei_uninit(&h->sei);
379 ff_h264_ps_uninit(&h->ps);
381 ff_h2645_packet_uninit(&h->pkt);
383 ff_h264_unref_picture(h, &h->cur_pic);
384 av_frame_free(&h->cur_pic.f);
385 ff_h264_unref_picture(h, &h->last_pic_for_ec);
386 av_frame_free(&h->last_pic_for_ec.f);
391 static AVOnce h264_vlc_init = AV_ONCE_INIT;
393 av_cold int ff_h264_decode_init(AVCodecContext *avctx)
395 H264Context *h = avctx->priv_data;
398 ret = h264_init_context(avctx, h);
402 ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc);
404 av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
405 return AVERROR_UNKNOWN;
408 if (avctx->codec_id == AV_CODEC_ID_H264) {
409 if (avctx->ticks_per_frame == 1) {
410 if(h->avctx->time_base.den < INT_MAX/2) {
411 h->avctx->time_base.den *= 2;
413 h->avctx->time_base.num /= 2;
415 avctx->ticks_per_frame = 2;
418 if (avctx->extradata_size > 0 && avctx->extradata) {
419 ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
420 &h->ps, &h->is_avc, &h->nal_length_size,
421 avctx->err_recognition, avctx);
423 h264_decode_end(avctx);
428 if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
429 h->avctx->has_b_frames < h->ps.sps->num_reorder_frames) {
430 h->avctx->has_b_frames = h->ps.sps->num_reorder_frames;
433 avctx->internal->allocate_progress = 1;
435 ff_h264_flush_change(h);
437 if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
440 if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
441 av_log(avctx, AV_LOG_WARNING,
442 "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
443 "Use it at your own risk\n");
450 static int decode_init_thread_copy(AVCodecContext *avctx)
452 H264Context *h = avctx->priv_data;
455 if (!avctx->internal->is_copy)
458 memset(h, 0, sizeof(*h));
460 ret = h264_init_context(avctx, h);
464 h->context_initialized = 0;
471 * Run setup operations that must be run after slice header decoding.
472 * This includes finding the next displayed frame.
474 * @param h h264 master context
475 * @param setup_finished enough NALs have been read that we can call
476 * ff_thread_finish_setup()
478 static void decode_postinit(H264Context *h, int setup_finished)
480 const SPS *sps = h->ps.sps;
481 H264Picture *out = h->cur_pic_ptr;
482 H264Picture *cur = h->cur_pic_ptr;
483 int i, pics, out_of_order, out_idx;
485 if (h->next_output_pic)
488 if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
489 /* FIXME: if we have two PAFF fields in one packet, we can't start
490 * the next thread here. If we have one field per packet, we can.
491 * The check in decode_nal_units() is not good enough to find this
492 * yet, so we assume the worst for now. */
493 // if (setup_finished)
494 // ff_thread_finish_setup(h->avctx);
495 if (cur->field_poc[0] == INT_MAX && cur->field_poc[1] == INT_MAX)
497 if (h->avctx->hwaccel || h->missing_fields <=1)
501 cur->f->interlaced_frame = 0;
502 cur->f->repeat_pict = 0;
504 /* Signal interlacing information externally. */
505 /* Prioritize picture timing SEI information over used
506 * decoding process if it exists. */
508 if (sps->pic_struct_present_flag) {
509 H264SEIPictureTiming *pt = &h->sei.picture_timing;
510 switch (pt->pic_struct) {
511 case SEI_PIC_STRUCT_FRAME:
513 case SEI_PIC_STRUCT_TOP_FIELD:
514 case SEI_PIC_STRUCT_BOTTOM_FIELD:
515 cur->f->interlaced_frame = 1;
517 case SEI_PIC_STRUCT_TOP_BOTTOM:
518 case SEI_PIC_STRUCT_BOTTOM_TOP:
519 if (FIELD_OR_MBAFF_PICTURE(h))
520 cur->f->interlaced_frame = 1;
522 // try to flag soft telecine progressive
523 cur->f->interlaced_frame = h->prev_interlaced_frame;
525 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
526 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
527 /* Signal the possibility of telecined film externally
528 * (pic_struct 5,6). From these hints, let the applications
529 * decide if they apply deinterlacing. */
530 cur->f->repeat_pict = 1;
532 case SEI_PIC_STRUCT_FRAME_DOUBLING:
533 cur->f->repeat_pict = 2;
535 case SEI_PIC_STRUCT_FRAME_TRIPLING:
536 cur->f->repeat_pict = 4;
540 if ((pt->ct_type & 3) &&
541 pt->pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
542 cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
544 /* Derive interlacing flag from used decoding process. */
545 cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
547 h->prev_interlaced_frame = cur->f->interlaced_frame;
549 if (cur->field_poc[0] != cur->field_poc[1]) {
550 /* Derive top_field_first from field pocs. */
551 cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
553 if (sps->pic_struct_present_flag) {
554 /* Use picture timing SEI information. Even if it is a
555 * information of a past frame, better than nothing. */
556 if (h->sei.picture_timing.pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
557 h->sei.picture_timing.pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
558 cur->f->top_field_first = 1;
560 cur->f->top_field_first = 0;
561 } else if (cur->f->interlaced_frame) {
562 /* Default to top field first when pic_struct_present_flag
563 * is not set but interlaced frame detected */
564 cur->f->top_field_first = 1;
566 /* Most likely progressive */
567 cur->f->top_field_first = 0;
571 if (h->sei.frame_packing.present &&
572 h->sei.frame_packing.frame_packing_arrangement_type <= 6 &&
573 h->sei.frame_packing.content_interpretation_type > 0 &&
574 h->sei.frame_packing.content_interpretation_type < 3) {
575 H264SEIFramePacking *fp = &h->sei.frame_packing;
576 AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
578 switch (fp->frame_packing_arrangement_type) {
580 stereo->type = AV_STEREO3D_CHECKERBOARD;
583 stereo->type = AV_STEREO3D_COLUMNS;
586 stereo->type = AV_STEREO3D_LINES;
589 if (fp->quincunx_sampling_flag)
590 stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
592 stereo->type = AV_STEREO3D_SIDEBYSIDE;
595 stereo->type = AV_STEREO3D_TOPBOTTOM;
598 stereo->type = AV_STEREO3D_FRAMESEQUENCE;
601 stereo->type = AV_STEREO3D_2D;
605 if (fp->content_interpretation_type == 2)
606 stereo->flags = AV_STEREO3D_FLAG_INVERT;
610 if (h->sei.display_orientation.present &&
611 (h->sei.display_orientation.anticlockwise_rotation ||
612 h->sei.display_orientation.hflip ||
613 h->sei.display_orientation.vflip)) {
614 H264SEIDisplayOrientation *o = &h->sei.display_orientation;
615 double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
616 AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
617 AV_FRAME_DATA_DISPLAYMATRIX,
618 sizeof(int32_t) * 9);
620 av_display_rotation_set((int32_t *)rotation->data, angle);
621 av_display_matrix_flip((int32_t *)rotation->data,
626 if (h->sei.afd.present) {
627 AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
631 *sd->data = h->sei.afd.active_format_description;
632 h->sei.afd.present = 0;
636 if (h->sei.a53_caption.a53_caption) {
637 H264SEIA53Caption *a53 = &h->sei.a53_caption;
638 AVFrameSideData *sd = av_frame_new_side_data(cur->f,
639 AV_FRAME_DATA_A53_CC,
640 a53->a53_caption_size);
642 memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
643 av_freep(&a53->a53_caption);
644 a53->a53_caption_size = 0;
645 h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
648 cur->mmco_reset = h->mmco_reset;
651 // FIXME do something with unavailable reference frames
653 /* Sort B-frames into display order */
654 if (sps->bitstream_restriction_flag ||
655 h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
656 h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
659 for (i = 0; 1; i++) {
660 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
662 h->last_pocs[i-1] = cur->poc;
665 h->last_pocs[i-1]= h->last_pocs[i];
668 out_of_order = MAX_DELAYED_PIC_COUNT - i;
669 if( cur->f->pict_type == AV_PICTURE_TYPE_B
670 || (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))
671 out_of_order = FFMAX(out_of_order, 1);
672 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
673 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
674 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
675 h->last_pocs[i] = INT_MIN;
676 h->last_pocs[0] = cur->poc;
678 } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
679 av_log(h->avctx, AV_LOG_INFO, "Increasing reorder buffer to %d\n", out_of_order);
680 h->avctx->has_b_frames = out_of_order;
684 while (h->delayed_pic[pics])
687 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
689 h->delayed_pic[pics++] = cur;
690 if (cur->reference == 0)
691 cur->reference = DELAYED_PIC_REF;
693 out = h->delayed_pic[0];
695 for (i = 1; h->delayed_pic[i] &&
696 !h->delayed_pic[i]->f->key_frame &&
697 !h->delayed_pic[i]->mmco_reset;
699 if (h->delayed_pic[i]->poc < out->poc) {
700 out = h->delayed_pic[i];
703 if (h->avctx->has_b_frames == 0 &&
704 (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
705 h->next_outputed_poc = INT_MIN;
706 out_of_order = out->poc < h->next_outputed_poc;
708 if (out_of_order || pics > h->avctx->has_b_frames) {
709 out->reference &= ~DELAYED_PIC_REF;
710 for (i = out_idx; h->delayed_pic[i]; i++)
711 h->delayed_pic[i] = h->delayed_pic[i + 1];
713 if (!out_of_order && pics > h->avctx->has_b_frames) {
714 h->next_output_pic = out;
715 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
716 h->next_outputed_poc = INT_MIN;
718 h->next_outputed_poc = out->poc;
720 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
723 if (h->next_output_pic) {
724 if (h->next_output_pic->recovered) {
725 // We have reached an recovery point and all frames after it in
726 // display order are "recovered".
727 h->frame_recovered |= FRAME_RECOVERED_SEI;
729 h->next_output_pic->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
732 if (setup_finished && !h->avctx->hwaccel) {
733 ff_thread_finish_setup(h->avctx);
735 if (h->avctx->active_thread_type & FF_THREAD_FRAME)
736 h->setup_finished = 1;
741 * instantaneous decoder refresh.
743 static void idr(H264Context *h)
746 ff_h264_remove_all_refs(h);
747 h->poc.prev_frame_num =
748 h->poc.prev_frame_num_offset = 0;
749 h->poc.prev_poc_msb = 1<<16;
750 h->poc.prev_poc_lsb = 0;
751 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
752 h->last_pocs[i] = INT_MIN;
755 /* forget old pics after a seek */
756 void ff_h264_flush_change(H264Context *h)
760 h->next_outputed_poc = INT_MIN;
761 h->prev_interlaced_frame = 1;
764 h->poc.prev_frame_num = -1;
765 if (h->cur_pic_ptr) {
766 h->cur_pic_ptr->reference = 0;
767 for (j=i=0; h->delayed_pic[i]; i++)
768 if (h->delayed_pic[i] != h->cur_pic_ptr)
769 h->delayed_pic[j++] = h->delayed_pic[i];
770 h->delayed_pic[j] = NULL;
772 ff_h264_unref_picture(h, &h->last_pic_for_ec);
775 ff_h264_sei_uninit(&h->sei);
776 h->recovery_frame = -1;
777 h->frame_recovered = 0;
778 h->current_slice = 0;
780 for (i = 0; i < h->nb_slice_ctx; i++)
781 h->slice_ctx[i].list_count = 0;
784 /* forget old pics after a seek */
785 static void flush_dpb(AVCodecContext *avctx)
787 H264Context *h = avctx->priv_data;
790 memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
792 ff_h264_flush_change(h);
794 for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
795 ff_h264_unref_picture(h, &h->DPB[i]);
796 h->cur_pic_ptr = NULL;
797 ff_h264_unref_picture(h, &h->cur_pic);
801 ff_h264_free_tables(h);
802 h->context_initialized = 0;
806 static const uint8_t start_code[] = { 0x00, 0x00, 0x01 };
809 static int get_last_needed_nal(H264Context *h)
816 for (i = 0; i < h->pkt.nb_nals; i++) {
817 H2645NAL *nal = &h->pkt.nals[i];
820 /* packets can sometimes contain multiple PPS/SPS,
821 * e.g. two PAFF field pictures in one packet, or a demuxer
822 * which splits NALs strangely if so, when frame threading we
823 * can't start the next thread until we've read all of them */
832 ret = init_get_bits8(&gb, nal->data + 1, (nal->size - 1));
835 if (!get_ue_golomb_long(&gb) || // first_mb_in_slice
837 first_slice != nal->type)
840 first_slice = nal->type;
847 static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
849 av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
850 av_log(logctx, AV_LOG_DEBUG, " green_metadata_type: %d\n", gm->green_metadata_type);
852 if (gm->green_metadata_type == 0) {
853 av_log(logctx, AV_LOG_DEBUG, " green_metadata_period_type: %d\n", gm->period_type);
855 if (gm->period_type == 2)
856 av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_seconds: %d\n", gm->num_seconds);
857 else if (gm->period_type == 3)
858 av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_pictures: %d\n", gm->num_pictures);
860 av_log(logctx, AV_LOG_DEBUG, " SEI GREEN Complexity Metrics: %f %f %f %f\n",
861 (float)gm->percent_non_zero_macroblocks/255,
862 (float)gm->percent_intra_coded_macroblocks/255,
863 (float)gm->percent_six_tap_filtering/255,
864 (float)gm->percent_alpha_point_deblocking_instance/255);
866 } else if (gm->green_metadata_type == 1) {
867 av_log(logctx, AV_LOG_DEBUG, " xsd_metric_type: %d\n", gm->xsd_metric_type);
869 if (gm->xsd_metric_type == 0)
870 av_log(logctx, AV_LOG_DEBUG, " xsd_metric_value: %f\n",
871 (float)gm->xsd_metric_value/100);
875 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
877 AVCodecContext *const avctx = h->avctx;
878 unsigned context_count = 0;
879 int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
885 h->max_contexts = h->nb_slice_ctx;
886 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
887 h->current_slice = 0;
889 h->cur_pic_ptr = NULL;
890 ff_h264_sei_uninit(&h->sei);
893 if (h->nal_length_size == 4) {
894 if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
896 }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
900 ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc,
901 h->nal_length_size, avctx->codec_id);
903 av_log(avctx, AV_LOG_ERROR,
904 "Error splitting the input into NAL units.\n");
908 if (avctx->active_thread_type & FF_THREAD_FRAME)
909 nals_needed = get_last_needed_nal(h);
913 for (i = 0; i < h->pkt.nb_nals; i++) {
914 H2645NAL *nal = &h->pkt.nals[i];
915 H264SliceContext *sl = &h->slice_ctx[context_count];
918 if (avctx->skip_frame >= AVDISCARD_NONREF &&
919 nal->ref_idc == 0 && nal->type != NAL_SEI)
923 // FIXME these should stop being context-global variables
924 h->nal_ref_idc = nal->ref_idc;
925 h->nal_unit_type = nal->type;
930 if ((nal->data[1] & 0xFC) == 0x98) {
931 av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
932 h->next_outputed_poc = INT_MIN;
936 if (nal->type != NAL_IDR_SLICE) {
937 av_log(h->avctx, AV_LOG_ERROR,
938 "Invalid mix of idr and non-idr slices\n");
943 if (h->current_slice && (avctx->active_thread_type & FF_THREAD_SLICE)) {
944 av_log(h, AV_LOG_ERROR, "invalid mixed IDR / non IDR frames cannot be decoded in slice multithreading mode\n");
945 ret = AVERROR_INVALIDDATA;
948 idr(h); // FIXME ensure we don't lose some frames if there is reordering
951 h->has_recovery_point = 1;
954 if ( nals_needed >= i
955 || (!(avctx->active_thread_type & FF_THREAD_FRAME) && !context_count))
958 if ((err = ff_h264_decode_slice_header(h, sl)))
961 if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
962 const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
964 if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
965 h->valid_recovery_point = 1;
967 if ( h->recovery_frame < 0
968 || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
969 h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
971 if (!h->valid_recovery_point)
972 h->recovery_frame = h->poc.frame_num;
976 h->cur_pic_ptr->f->key_frame |= (nal->type == NAL_IDR_SLICE);
978 if (nal->type == NAL_IDR_SLICE ||
979 (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
980 h->recovery_frame = -1;
981 h->cur_pic_ptr->recovered = 1;
983 // If we have an IDR, all frames after it in decoded order are
985 if (nal->type == NAL_IDR_SLICE)
986 h->frame_recovered |= FRAME_RECOVERED_IDR;
988 h->cur_pic_ptr->recovered |= h->frame_recovered;
990 h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
993 if (h->current_slice == 1) {
994 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS))
995 decode_postinit(h, i >= nals_needed);
997 if (h->avctx->hwaccel &&
998 (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
1000 #if FF_API_CAP_VDPAU
1001 if (CONFIG_H264_VDPAU_DECODER &&
1002 h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU)
1003 ff_vdpau_h264_picture_start(h);
1007 if (sl->redundant_pic_count == 0) {
1008 if (avctx->hwaccel) {
1009 ret = avctx->hwaccel->decode_slice(avctx,
1014 #if FF_API_CAP_VDPAU
1015 } else if (CONFIG_H264_VDPAU_DECODER &&
1016 h->avctx->codec->capabilities & AV_CODEC_CAP_HWACCEL_VDPAU) {
1017 ff_vdpau_add_data_chunk(h->cur_pic_ptr->f->data[0],
1019 sizeof(start_code));
1020 ff_vdpau_add_data_chunk(h->cur_pic_ptr->f->data[0],
1031 avpriv_request_sample(avctx, "data partitioning");
1034 ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
1035 h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1;
1036 if (avctx->debug & FF_DEBUG_GREEN_MD)
1037 debug_green_metadata(&h->sei.green_metadata, h->avctx);
1039 FF_DISABLE_DEPRECATION_WARNINGS
1040 h->avctx->dtg_active_format = h->sei.afd.active_format_description;
1041 FF_ENABLE_DEPRECATION_WARNINGS
1042 #endif /* FF_API_AFD */
1043 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1047 GetBitContext tmp_gb = nal->gb;
1048 if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
1050 av_log(h->avctx, AV_LOG_DEBUG,
1051 "SPS decoding failure, trying again with the complete NAL\n");
1052 init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
1053 if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
1055 ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
1059 ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
1061 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1065 case NAL_END_SEQUENCE:
1066 case NAL_END_STREAM:
1067 case NAL_FILLER_DATA:
1069 case NAL_AUXILIARY_SLICE:
1074 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
1075 nal->type, nal->size_bits);
1078 if (context_count == h->max_contexts) {
1079 ret = ff_h264_execute_decode_slices(h, context_count);
1080 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1085 if (err < 0 || err == SLICE_SKIPED) {
1087 av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
1088 sl->ref_count[0] = sl->ref_count[1] = sl->list_count = 0;
1089 } else if (err == SLICE_SINGLETHREAD) {
1090 if (context_count > 0) {
1091 ret = ff_h264_execute_decode_slices(h, context_count);
1092 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1096 /* Slice could not be decoded in parallel mode, restart. */
1097 sl = &h->slice_ctx[0];
1101 if (context_count) {
1102 ret = ff_h264_execute_decode_slices(h, context_count);
1103 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1110 #if CONFIG_ERROR_RESILIENCE
1112 * FIXME: Error handling code does not seem to support interlaced
1113 * when slices span multiple rows
1114 * The ff_er_add_slice calls don't work right for bottom
1115 * fields; they cause massive erroneous error concealing
1116 * Error marking covers both fields (top and bottom).
1117 * This causes a mismatched s->error_count
1118 * and a bad error table. Further, the error count goes to
1119 * INT_MAX when called for bottom field, because mb_y is
1120 * past end by one (callers fault) and resync_mb_y != 0
1121 * causes problems for the first MB line, too.
1123 if (!FIELD_PICTURE(h) && h->current_slice &&
1124 h->ps.sps == (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data &&
1127 H264SliceContext *sl = h->slice_ctx;
1128 int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
1130 ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
1133 ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
1134 sl->ref_list[0][0].parent = &h->last_pic_for_ec;
1135 memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
1136 memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
1137 sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
1138 } else if (sl->ref_count[0]) {
1139 ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
1141 ff_h264_set_erpic(&sl->er.last_pic, NULL);
1143 if (sl->ref_count[1])
1144 ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
1146 sl->er.ref_count = sl->ref_count[0];
1148 ff_er_frame_end(&sl->er);
1150 memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
1152 #endif /* CONFIG_ERROR_RESILIENCE */
1154 if (h->cur_pic_ptr && !h->droppable) {
1155 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1156 h->picture_structure == PICT_BOTTOM_FIELD);
1159 return (ret < 0) ? ret : buf_size;
1163 * Return the number of bytes consumed for building the current frame.
1165 static int get_consumed_bytes(int pos, int buf_size)
1168 pos = 1; // avoid infinite loops (I doubt that is needed but...)
1169 if (pos + 10 > buf_size)
1170 pos = buf_size; // oops ;)
1175 static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
1177 AVFrame *src = srcp->f;
1178 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format);
1180 int ret = av_frame_ref(dst, src);
1184 av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.frame_packing), 0);
1186 h->backup_width = h->avctx->width;
1187 h->backup_height = h->avctx->height;
1188 h->backup_pix_fmt = h->avctx->pix_fmt;
1190 h->avctx->width = dst->width;
1191 h->avctx->height = dst->height;
1192 h->avctx->pix_fmt = dst->format;
1194 if (srcp->sei_recovery_frame_cnt == 0)
1199 for (i = 0; i < desc->nb_components; i++) {
1200 int hshift = (i > 0) ? desc->log2_chroma_w : 0;
1201 int vshift = (i > 0) ? desc->log2_chroma_h : 0;
1202 int off = ((srcp->crop_left >> hshift) << h->pixel_shift) +
1203 (srcp->crop_top >> vshift) * dst->linesize[i];
1204 dst->data[i] += off;
1209 static int is_extra(const uint8_t *buf, int buf_size)
1211 int cnt= buf[5]&0x1f;
1212 const uint8_t *p= buf+6;
1214 int nalsize= AV_RB16(p) + 2;
1215 if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
1223 int nalsize= AV_RB16(p) + 2;
1224 if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
1231 static int h264_decode_frame(AVCodecContext *avctx, void *data,
1232 int *got_frame, AVPacket *avpkt)
1234 const uint8_t *buf = avpkt->data;
1235 int buf_size = avpkt->size;
1236 H264Context *h = avctx->priv_data;
1237 AVFrame *pict = data;
1243 h->flags = avctx->flags;
1244 h->setup_finished = 0;
1246 if (h->backup_width != -1) {
1247 avctx->width = h->backup_width;
1248 h->backup_width = -1;
1250 if (h->backup_height != -1) {
1251 avctx->height = h->backup_height;
1252 h->backup_height = -1;
1254 if (h->backup_pix_fmt != AV_PIX_FMT_NONE) {
1255 avctx->pix_fmt = h->backup_pix_fmt;
1256 h->backup_pix_fmt = AV_PIX_FMT_NONE;
1259 ff_h264_unref_picture(h, &h->last_pic_for_ec);
1261 /* end of stream, output what is still in the buffers */
1262 if (buf_size == 0) {
1265 h->cur_pic_ptr = NULL;
1268 // FIXME factorize this with the output code below
1269 out = h->delayed_pic[0];
1272 h->delayed_pic[i] &&
1273 !h->delayed_pic[i]->f->key_frame &&
1274 !h->delayed_pic[i]->mmco_reset;
1276 if (h->delayed_pic[i]->poc < out->poc) {
1277 out = h->delayed_pic[i];
1281 for (i = out_idx; h->delayed_pic[i]; i++)
1282 h->delayed_pic[i] = h->delayed_pic[i + 1];
1285 out->reference &= ~DELAYED_PIC_REF;
1286 ret = output_frame(h, pict, out);
1294 if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) {
1296 uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
1297 if (is_extra(side, side_size))
1298 ff_h264_decode_extradata(side, side_size,
1299 &h->ps, &h->is_avc, &h->nal_length_size,
1300 avctx->err_recognition, avctx);
1302 if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){
1303 if (is_extra(buf, buf_size))
1304 return ff_h264_decode_extradata(buf, buf_size,
1305 &h->ps, &h->is_avc, &h->nal_length_size,
1306 avctx->err_recognition, avctx);
1309 buf_index = decode_nal_units(h, buf, buf_size);
1311 return AVERROR_INVALIDDATA;
1313 if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
1314 av_assert0(buf_index <= buf_size);
1318 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) {
1319 if (avctx->skip_frame >= AVDISCARD_NONREF ||
1320 buf_size >= 4 && !memcmp("Q264", buf, 4))
1322 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1323 return AVERROR_INVALIDDATA;
1326 if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1327 (h->mb_y >= h->mb_height && h->mb_height)) {
1328 if (avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)
1329 decode_postinit(h, 1);
1331 if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1334 /* Wait for second field. */
1336 if (h->next_output_pic && ((avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
1337 (avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
1338 h->next_output_pic->recovered)) {
1339 if (!h->next_output_pic->recovered)
1340 h->next_output_pic->f->flags |= AV_FRAME_FLAG_CORRUPT;
1342 if (!h->avctx->hwaccel &&
1343 (h->next_output_pic->field_poc[0] == INT_MAX ||
1344 h->next_output_pic->field_poc[1] == INT_MAX)
1347 AVFrame *f = h->next_output_pic->f;
1348 int field = h->next_output_pic->field_poc[0] == INT_MAX;
1349 uint8_t *dst_data[4];
1351 const uint8_t *src_data[4];
1353 av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
1355 for (p = 0; p<4; p++) {
1356 dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
1357 src_data[p] = f->data[p] + field *f->linesize[p];
1358 linesizes[p] = 2*f->linesize[p];
1361 av_image_copy(dst_data, linesizes, src_data, linesizes,
1362 f->format, f->width, f->height>>1);
1365 ret = output_frame(h, pict, h->next_output_pic);
1369 if (CONFIG_MPEGVIDEO) {
1370 ff_print_debug_info2(h->avctx, pict, NULL,
1371 h->next_output_pic->mb_type,
1372 h->next_output_pic->qscale_table,
1373 h->next_output_pic->motion_val,
1375 h->mb_width, h->mb_height, h->mb_stride, 1);
1380 av_assert0(pict->buf[0] || !*got_frame);
1382 ff_h264_unref_picture(h, &h->last_pic_for_ec);
1384 return get_consumed_bytes(buf_index, buf_size);
1387 #define OFFSET(x) offsetof(H264Context, x)
1388 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1389 static const AVOption h264_options[] = {
1390 {"is_avc", "is avc", offsetof(H264Context, is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0},
1391 {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0},
1392 { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1396 static const AVClass h264_class = {
1397 .class_name = "H264 Decoder",
1398 .item_name = av_default_item_name,
1399 .option = h264_options,
1400 .version = LIBAVUTIL_VERSION_INT,
1403 AVCodec ff_h264_decoder = {
1405 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1406 .type = AVMEDIA_TYPE_VIDEO,
1407 .id = AV_CODEC_ID_H264,
1408 .priv_data_size = sizeof(H264Context),
1409 .init = ff_h264_decode_init,
1410 .close = h264_decode_end,
1411 .decode = h264_decode_frame,
1412 .capabilities = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 |
1413 AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
1414 AV_CODEC_CAP_FRAME_THREADS,
1415 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
1417 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1418 .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context),
1419 .profiles = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1420 .priv_class = &h264_class,
1423 #if CONFIG_H264_VDPAU_DECODER && FF_API_VDPAU
1424 static const AVClass h264_vdpau_class = {
1425 .class_name = "H264 VDPAU Decoder",
1426 .item_name = av_default_item_name,
1427 .option = h264_options,
1428 .version = LIBAVUTIL_VERSION_INT,
1431 AVCodec ff_h264_vdpau_decoder = {
1432 .name = "h264_vdpau",
1433 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
1434 .type = AVMEDIA_TYPE_VIDEO,
1435 .id = AV_CODEC_ID_H264,
1436 .priv_data_size = sizeof(H264Context),
1437 .init = ff_h264_decode_init,
1438 .close = h264_decode_end,
1439 .decode = h264_decode_frame,
1440 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HWACCEL_VDPAU,
1442 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
1444 .profiles = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1445 .priv_class = &h264_vdpau_class,