1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #if defined(HAVE_LIBAVCODEC_AVCODEC_H) && defined(HAVE_AVCODEC_DXVA2)
33 # if _WIN32_WINNT < 0x600
34 /* dxva2 needs Vista support */
36 # define _WIN32_WINNT 0x600
40 #include <vlc_common.h>
41 #include <vlc_codec.h>
42 #include <vlc_avcodec.h>
47 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
48 # include <libavcodec/avcodec.h>
49 # ifdef HAVE_AVCODEC_VAAPI
50 # include <libavcodec/vaapi.h>
52 # ifdef HAVE_AVCODEC_DXVA2
53 # include <libavcodec/dxva2.h>
55 #elif defined(HAVE_FFMPEG_AVCODEC_H)
56 # include <ffmpeg/avcodec.h>
63 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
64 # define HAVE_AVCODEC_VA
67 /*****************************************************************************
68 * decoder_sys_t : decoder descriptor
69 *****************************************************************************/
72 AVCODEC_COMMON_MEMBERS
74 /* Video decoder specific part */
79 /* for frame skipping algo */
81 enum AVDiscard i_skip_frame;
82 enum AVDiscard i_skip_idct;
84 /* how many decoded frames are late */
86 mtime_t i_late_frames_start;
88 /* for direct rendering */
89 bool b_direct_rendering;
90 int i_direct_rendering_used;
94 /* Hack to force display of still pictures */
98 AVPaletteControl palette;
109 #ifdef HAVE_AVCODEC_MT
110 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
111 # define post_mt(s) vlc_sem_post( &s->sem_mt )
117 /* FIXME (dummy palette for now) */
118 static const AVPaletteControl palette_control;
120 /*****************************************************************************
122 *****************************************************************************/
123 static void ffmpeg_InitCodec ( decoder_t * );
124 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
125 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
126 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
127 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
129 #ifdef HAVE_AVCODEC_VA
130 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
131 const enum PixelFormat * );
134 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
136 uint8_t *p = (uint8_t*)&fcc;
137 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
140 /*****************************************************************************
142 *****************************************************************************/
144 /* Returns a new picture buffer */
145 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
146 AVCodecContext *p_context )
148 decoder_sys_t *p_sys = p_dec->p_sys;
150 unsigned edge = p_sys->b_direct_rendering ? avcodec_get_edge_width() : 0;
151 p_dec->fmt_out.video.i_width = p_context->width + edge;
152 p_dec->fmt_out.video.i_height = p_context->height + edge;
154 if( !p_context->width || !p_context->height )
156 return NULL; /* invalid display size */
159 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
161 /* we are doomed, but not really, because most codecs set their pix_fmt
163 * FIXME does it make sense here ? */
164 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
166 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
168 /* If an aspect-ratio was specified in the input format then force it */
169 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
171 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
172 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
176 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
177 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
179 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
181 p_dec->fmt_out.video.i_sar_num = 1;
182 p_dec->fmt_out.video.i_sar_den = 1;
186 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
187 p_dec->fmt_in.video.i_frame_rate_base > 0 )
189 p_dec->fmt_out.video.i_frame_rate =
190 p_dec->fmt_in.video.i_frame_rate;
191 p_dec->fmt_out.video.i_frame_rate_base =
192 p_dec->fmt_in.video.i_frame_rate_base;
194 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
196 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
197 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
200 return decoder_NewPicture( p_dec );
203 /*****************************************************************************
204 * InitVideo: initialize the video decoder
205 *****************************************************************************
206 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
207 * opened (done after the first decoded frame).
208 *****************************************************************************/
209 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
210 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
212 decoder_sys_t *p_sys;
215 /* Allocate the memory needed to store the decoder's structure */
216 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
219 p_codec->type = AVMEDIA_TYPE_VIDEO;
220 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
221 p_context->codec_id = i_codec_id;
222 p_sys->p_context = p_context;
223 p_sys->p_codec = p_codec;
224 p_sys->i_codec_id = i_codec_id;
225 p_sys->psz_namecodec = psz_namecodec;
226 p_sys->p_ff_pic = avcodec_alloc_frame();
227 p_sys->b_delayed_open = true;
229 vlc_sem_init( &p_sys->sem_mt, 0 );
231 /* ***** Fill p_context with init values ***** */
232 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
234 /* ***** Get configuration of ffmpeg plugin ***** */
235 p_sys->p_context->workaround_bugs =
236 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
237 p_sys->p_context->error_recognition =
238 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
240 if( var_CreateGetBool( p_dec, "grayscale" ) )
241 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
243 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
244 if( i_val ) p_sys->p_context->debug_mv = i_val;
246 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
247 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
249 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
250 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
251 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
252 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
253 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
255 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
256 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
258 /* ***** ffmpeg frame skipping ***** */
259 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
261 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
264 p_sys->p_context->skip_frame = AVDISCARD_NONE;
267 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
270 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
273 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
276 p_sys->p_context->skip_frame = AVDISCARD_ALL;
279 p_sys->p_context->skip_frame = AVDISCARD_NONE;
282 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
284 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
287 p_sys->p_context->skip_idct = AVDISCARD_NONE;
290 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
293 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
296 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
299 p_sys->p_context->skip_idct = AVDISCARD_ALL;
302 p_sys->p_context->skip_idct = AVDISCARD_NONE;
305 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
307 /* ***** ffmpeg direct rendering ***** */
308 p_sys->b_direct_rendering = false;
309 p_sys->i_direct_rendering_used = -1;
310 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
311 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
312 /* No idea why ... but this fixes flickering on some TSCC streams */
313 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
314 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 53, 15, 0 )
315 p_sys->i_codec_id != CODEC_ID_PRORES &&
317 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
318 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
319 don't have idea howto implement fallback to libvpx decoder */
320 p_sys->i_codec_id != CODEC_ID_VP8 &&
322 !p_sys->p_context->debug_mv )
324 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
325 * so we need to do another check in ffmpeg_GetFrameBuf() */
326 p_sys->b_direct_rendering = true;
329 /* ffmpeg doesn't properly release old pictures when frames are skipped */
330 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
331 if( p_sys->b_direct_rendering )
333 msg_Dbg( p_dec, "trying to use direct rendering" );
334 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
338 msg_Dbg( p_dec, "direct rendering is disabled" );
341 /* Always use our get_buffer wrapper so we can calculate the
343 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
344 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
345 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
346 p_sys->p_context->opaque = p_dec;
348 #ifdef HAVE_AVCODEC_MT
349 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
350 if( i_thread_count <= 0 )
351 i_thread_count = vlc_GetCPUCount();
352 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
353 p_sys->p_context->thread_count = i_thread_count;
356 #ifdef HAVE_AVCODEC_VA
357 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
359 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
360 i_codec_id == CODEC_ID_MPEG4 ||
361 i_codec_id == CODEC_ID_H264 ||
362 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
364 #ifdef HAVE_AVCODEC_MT
365 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
367 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
368 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
371 p_sys->p_context->get_format = ffmpeg_GetFormat;
375 /* ***** misc init ***** */
376 p_sys->i_pts = VLC_TS_INVALID;
377 p_sys->b_has_b_frames = false;
378 p_sys->b_first_frame = true;
379 p_sys->b_flush = false;
380 p_sys->i_late_frames = 0;
382 /* Set output properties */
383 p_dec->fmt_out.i_cat = VIDEO_ES;
384 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
386 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
387 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
389 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
392 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
393 if( p_dec->fmt_in.video.p_palette )
395 p_sys->palette.palette_changed = 1;
397 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
403 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
404 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
405 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
406 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
408 p_sys->palette.palette[i] = c.u;
410 p_sys->p_context->palctrl = &p_sys->palette;
412 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
413 if( p_dec->fmt_out.video.p_palette )
414 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
416 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
418 p_sys->p_context->palctrl = &p_sys->palette;
421 /* ***** init this codec with special data ***** */
422 ffmpeg_InitCodec( p_dec );
424 /* ***** Open the codec ***** */
425 if( ffmpeg_OpenCodec( p_dec ) < 0 )
427 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
428 av_free( p_sys->p_ff_pic );
429 vlc_sem_destroy( &p_sys->sem_mt );
437 /*****************************************************************************
438 * DecodeVideo: Called to decode one or more frames
439 *****************************************************************************/
440 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
442 decoder_sys_t *p_sys = p_dec->p_sys;
443 AVCodecContext *p_context = p_sys->p_context;
445 int b_null_size = false;
448 if( !pp_block || !*pp_block )
451 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
453 ffmpeg_InitCodec( p_dec );
454 if( p_sys->b_delayed_open )
456 if( ffmpeg_OpenCodec( p_dec ) )
457 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
462 if( p_sys->b_delayed_open )
464 block_Release( p_block );
468 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
470 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
472 p_sys->i_late_frames = 0;
474 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
475 avcodec_flush_buffers( p_context );
477 block_Release( p_block );
481 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
483 /* Do not care about late frames when prerolling
484 * TODO avoid decoding of non reference frame
485 * (ie all B except for H264 where it depends only on nal_ref_idc) */
486 p_sys->i_late_frames = 0;
489 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
490 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
492 if( p_sys->i_pts > VLC_TS_INVALID )
494 msg_Err( p_dec, "more than 5 seconds of late video -> "
495 "dropping frame (computer too slow ?)" );
496 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
498 block_Release( p_block );
499 p_sys->i_late_frames--;
503 /* A good idea could be to decode all I pictures and see for the other */
504 if( !p_dec->b_pace_control &&
506 (p_sys->i_late_frames > 4) )
509 if( p_sys->i_late_frames < 12 )
511 p_context->skip_frame =
512 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
513 AVDISCARD_NONREF : p_sys->i_skip_frame;
517 /* picture too late, won't decode
518 * but break picture until a new I, and for mpeg4 ...*/
519 p_sys->i_late_frames--; /* needed else it will never be decrease */
520 block_Release( p_block );
526 if( p_sys->b_hurry_up )
527 p_context->skip_frame = p_sys->i_skip_frame;
528 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
534 if( p_context->width <= 0 || p_context->height <= 0 )
536 if( p_sys->b_hurry_up )
537 p_context->skip_frame = p_sys->i_skip_frame;
540 else if( !b_drawpicture )
542 /* It creates broken picture
543 * FIXME either our parser or ffmpeg is broken */
545 if( p_sys->b_hurry_up )
546 p_context->skip_frame = __MAX( p_context->skip_frame,
552 * Do the actual decoding now */
554 /* Don't forget that ffmpeg requires a little more bytes
555 * that the real frame size */
556 if( p_block->i_buffer > 0 )
558 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
560 p_block = block_Realloc( p_block, 0,
561 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
564 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
566 memset( p_block->p_buffer + p_block->i_buffer, 0,
567 FF_INPUT_BUFFER_PADDING_SIZE );
570 while( p_block->i_buffer > 0 || p_sys->b_flush )
572 int i_used, b_gotpicture;
576 /* Set the PTS/DTS in the context reordered_opaque field */
577 if( p_block->i_pts > VLC_TS_INVALID )
578 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
579 else if( p_block->i_dts > VLC_TS_INVALID )
580 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
582 p_context->reordered_opaque = INT64_MIN;
583 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
585 /* Make sure we don't reuse the same timestamps twice */
587 p_block->i_dts = VLC_TS_INVALID;
591 av_init_packet( &pkt );
592 pkt.data = p_block->p_buffer;
593 pkt.size = p_block->i_buffer;
594 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
595 &b_gotpicture, &pkt );
597 if( b_null_size && !p_sys->b_flush &&
598 p_context->width > 0 && p_context->height > 0 )
600 /* Reparse it to not drop the I frame */
602 if( p_sys->b_hurry_up )
603 p_context->skip_frame = p_sys->i_skip_frame;
604 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
605 &b_gotpicture, &pkt );
610 p_sys->b_first_frame = true;
612 if( p_block->i_buffer <= 0 )
613 p_sys->b_flush = false;
618 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
620 block_Release( p_block );
623 else if( i_used > p_block->i_buffer ||
624 p_context->thread_count > 1 )
626 i_used = p_block->i_buffer;
630 p_block->i_buffer -= i_used;
631 p_block->p_buffer += i_used;
633 /* Nothing to display */
636 if( i_used == 0 ) break;
640 /* Sanity check (seems to be needed for some streams) */
641 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
643 p_sys->b_has_b_frames = true;
646 /* Compute the PTS */
647 mtime_t i_pts = VLC_TS_INVALID;
648 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
650 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
651 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
654 if( !p_context->has_b_frames ||
655 !p_sys->b_has_b_frames ||
656 !p_sys->p_ff_pic->reference ||
657 p_sys->i_pts <= VLC_TS_INVALID )
660 /* Guess what ? The rules are different for Real Video :( */
661 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
662 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
663 p_sys->b_has_b_frames )
665 i_pts = VLC_TS_INVALID;
666 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
674 if( i_pts <= VLC_TS_INVALID )
675 i_pts = p_sys->i_pts;
677 /* Interpolate the next PTS */
678 if( i_pts > VLC_TS_INVALID )
679 p_sys->i_pts = i_pts;
680 if( p_sys->i_pts > VLC_TS_INVALID )
682 /* interpolate the next PTS */
683 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
684 p_dec->fmt_in.video.i_frame_rate_base > 0 )
686 p_sys->i_pts += INT64_C(1000000) *
687 (2 + p_sys->p_ff_pic->repeat_pict) *
688 p_dec->fmt_in.video.i_frame_rate_base /
689 (2 * p_dec->fmt_in.video.i_frame_rate);
691 else if( p_context->time_base.den > 0 )
693 int i_tick = p_context->ticks_per_frame;
697 p_sys->i_pts += INT64_C(1000000) *
698 (2 + p_sys->p_ff_pic->repeat_pict) *
699 i_tick * p_context->time_base.num /
700 (2 * p_context->time_base.den);
704 /* Update frame late count (except when doing preroll) */
705 mtime_t i_display_date = 0;
706 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
707 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
709 if( i_display_date > 0 && i_display_date <= mdate() )
711 p_sys->i_late_frames++;
712 if( p_sys->i_late_frames == 1 )
713 p_sys->i_late_frames_start = mdate();
717 p_sys->i_late_frames = 0;
720 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
723 if( !p_sys->p_ff_pic->opaque )
725 /* Get a new picture */
726 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
729 block_Release( p_block );
733 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
735 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
739 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
740 decoder_LinkPicture( p_dec, p_pic );
743 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
745 /* Fetch again the aspect ratio in case it changed */
746 p_dec->fmt_out.video.i_sar_num
747 = p_context->sample_aspect_ratio.num;
748 p_dec->fmt_out.video.i_sar_den
749 = p_context->sample_aspect_ratio.den;
751 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
753 p_dec->fmt_out.video.i_sar_num = 1;
754 p_dec->fmt_out.video.i_sar_den = 1;
758 /* Send decoded frame to vout */
759 if( i_pts > VLC_TS_INVALID)
763 if( p_sys->b_first_frame )
765 /* Hack to force display of still pictures */
766 p_sys->b_first_frame = false;
767 p_pic->b_force = true;
770 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
771 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
772 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
774 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
775 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
776 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
777 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
778 p_pic->i_qstride * i_mb_h );
779 switch( p_sys->p_ff_pic->qscale_type )
781 case FF_QSCALE_TYPE_MPEG1:
782 p_pic->i_qtype = QTYPE_MPEG1;
784 case FF_QSCALE_TYPE_MPEG2:
785 p_pic->i_qtype = QTYPE_MPEG2;
787 case FF_QSCALE_TYPE_H264:
788 p_pic->i_qtype = QTYPE_H264;
796 decoder_DeletePicture( p_dec, p_pic );
800 block_Release( p_block );
804 /*****************************************************************************
805 * EndVideo: decoder destruction
806 *****************************************************************************
807 * This function is called when the thread ends after a successful
809 *****************************************************************************/
810 void EndVideoDec( decoder_t *p_dec )
812 decoder_sys_t *p_sys = p_dec->p_sys;
816 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
817 if( p_sys->p_context->codec )
818 avcodec_flush_buffers( p_sys->p_context );
822 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
826 vlc_va_Delete( p_sys->p_va );
829 vlc_sem_destroy( &p_sys->sem_mt );
832 /*****************************************************************************
833 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
834 *****************************************************************************/
835 static void ffmpeg_InitCodec( decoder_t *p_dec )
837 decoder_sys_t *p_sys = p_dec->p_sys;
838 int i_size = p_dec->fmt_in.i_extra;
840 if( !i_size ) return;
842 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
846 p_sys->p_context->extradata_size = i_size + 12;
847 p = p_sys->p_context->extradata =
848 malloc( p_sys->p_context->extradata_size );
852 memcpy( &p[0], "SVQ3", 4 );
853 memset( &p[4], 0, 8 );
854 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
856 /* Now remove all atoms before the SMI one */
857 if( p_sys->p_context->extradata_size > 0x5a &&
858 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
860 uint8_t *psz = &p[0x52];
862 while( psz < &p[p_sys->p_context->extradata_size - 8] )
864 int i_size = GetDWBE( psz );
867 /* FIXME handle 1 as long size */
870 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
872 memmove( &p[0x52], psz,
873 &p[p_sys->p_context->extradata_size] - psz );
883 p_sys->p_context->extradata_size = i_size;
884 p_sys->p_context->extradata =
885 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
886 if( p_sys->p_context->extradata )
888 memcpy( p_sys->p_context->extradata,
889 p_dec->fmt_in.p_extra, i_size );
890 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
891 0, FF_INPUT_BUFFER_PADDING_SIZE );
896 /*****************************************************************************
897 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
898 * picture_t structure (when not in direct rendering mode).
899 *****************************************************************************/
900 static void ffmpeg_CopyPicture( decoder_t *p_dec,
901 picture_t *p_pic, AVFrame *p_ff_pic )
903 decoder_sys_t *p_sys = p_dec->p_sys;
907 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
909 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
911 int i_plane, i_size, i_line;
912 uint8_t *p_dst, *p_src;
913 int i_src_stride, i_dst_stride;
915 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
917 p_src = p_ff_pic->data[i_plane];
918 p_dst = p_pic->p[i_plane].p_pixels;
919 i_src_stride = p_ff_pic->linesize[i_plane];
920 i_dst_stride = p_pic->p[i_plane].i_pitch;
922 i_size = __MIN( i_src_stride, i_dst_stride );
923 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
926 vlc_memcpy( p_dst, p_src, i_size );
927 p_src += i_src_stride;
928 p_dst += i_dst_stride;
934 msg_Err( p_dec, "don't know how to convert chroma %i",
935 p_sys->p_context->pix_fmt );
940 /*****************************************************************************
941 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
942 *****************************************************************************
943 * It is used for direct rendering as well as to get the right PTS for each
944 * decoded picture (even in indirect rendering mode).
945 *****************************************************************************/
946 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
949 decoder_t *p_dec = (decoder_t *)p_context->opaque;
950 decoder_sys_t *p_sys = p_dec->p_sys;
954 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
955 p_ff_pic->opaque = NULL;
959 #ifdef HAVE_AVCODEC_VA
960 /* hwaccel_context is not present in old ffmpeg version */
961 if( vlc_va_Setup( p_sys->p_va,
962 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
963 p_context->width, p_context->height ) )
965 msg_Err( p_dec, "vlc_va_Setup failed" );
973 p_ff_pic->type = FF_BUFFER_TYPE_USER;
974 /* FIXME what is that, should give good value */
975 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
977 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
979 msg_Err( p_dec, "VaGrabSurface failed" );
984 else if( !p_sys->b_direct_rendering )
986 /* Not much to do in indirect rendering mode. */
987 return avcodec_default_get_buffer( p_context, p_ff_pic );
991 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
992 * so we need to check for direct rendering again. */
994 int i_width = p_context->width;
995 int i_height = p_context->height;
996 avcodec_align_dimensions( p_context, &i_width, &i_height );
998 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
999 p_context->pix_fmt == PIX_FMT_PAL8 )
1002 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1004 /* Get a new picture */
1005 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1008 bool b_compatible = true;
1009 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1010 p_pic->p[0].i_lines < i_height )
1011 b_compatible = false;
1012 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1015 switch( p_sys->i_codec_id )
1025 i_align = i == 0 ? 16 : 8;
1028 if( p_pic->p[i].i_pitch % i_align )
1029 b_compatible = false;
1030 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1031 b_compatible = false;
1033 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1035 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1036 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1037 b_compatible = false;
1041 decoder_DeletePicture( p_dec, p_pic );
1045 if( p_sys->i_direct_rendering_used != 1 )
1047 msg_Dbg( p_dec, "using direct rendering" );
1048 p_sys->i_direct_rendering_used = 1;
1051 p_context->draw_horiz_band = NULL;
1053 p_ff_pic->opaque = (void*)p_pic;
1054 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1055 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1056 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1057 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1058 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1060 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1061 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1062 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1063 p_ff_pic->linesize[3] = 0;
1065 /* FIXME what is that, should give good value */
1066 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1072 if( p_sys->i_direct_rendering_used != 0 )
1074 msg_Warn( p_dec, "disabling direct rendering" );
1075 p_sys->i_direct_rendering_used = 0;
1078 return avcodec_default_get_buffer( p_context, p_ff_pic );
1080 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1082 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1084 /* We always use default reget function, it works perfectly fine */
1085 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1088 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1091 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1092 decoder_sys_t *p_sys = p_dec->p_sys;
1096 vlc_va_Release( p_sys->p_va, p_ff_pic );
1098 else if( !p_ff_pic->opaque )
1100 /* We can end up here without the AVFrame being allocated by
1101 * avcodec_default_get_buffer() if VA is used and the frame is
1102 * released when the decoder is closed
1104 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1105 avcodec_default_release_buffer( p_context, p_ff_pic );
1109 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1111 decoder_UnlinkPicture( p_dec, p_pic );
1113 for( int i = 0; i < 4; i++ )
1114 p_ff_pic->data[i] = NULL;
1117 #ifdef HAVE_AVCODEC_VA
1118 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1119 const enum PixelFormat *pi_fmt )
1121 decoder_t *p_dec = p_context->opaque;
1122 decoder_sys_t *p_sys = p_dec->p_sys;
1126 vlc_va_Delete( p_sys->p_va );
1130 /* Try too look for a supported hw acceleration */
1131 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1133 static const char *ppsz_name[PIX_FMT_NB] = {
1134 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1135 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1136 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1137 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1138 #ifdef HAVE_AVCODEC_DXVA2
1139 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1141 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1142 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1144 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1146 /* Only VLD supported */
1147 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1149 if( !var_InheritBool( p_dec, "xlib" ) )
1151 msg_Warn( p_dec, "Ignoring VA API" );
1154 #ifdef HAVE_AVCODEC_VAAPI
1155 msg_Dbg( p_dec, "Trying VA API" );
1156 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1158 msg_Warn( p_dec, "Failed to open VA API" );
1163 #ifdef HAVE_AVCODEC_DXVA2
1164 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1166 msg_Dbg( p_dec, "Trying DXVA2" );
1167 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1169 msg_Warn( p_dec, "Failed to open DXVA2" );
1174 p_context->width > 0 && p_context->height > 0 )
1176 /* We try to call vlc_va_Setup when possible to detect errors when
1177 * possible (later is too late) */
1178 if( vlc_va_Setup( p_sys->p_va,
1179 &p_context->hwaccel_context,
1180 &p_dec->fmt_out.video.i_chroma,
1181 p_context->width, p_context->height ) )
1183 msg_Err( p_dec, "vlc_va_Setup failed" );
1184 vlc_va_Delete( p_sys->p_va );
1191 if( p_sys->p_va->description )
1192 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1194 /* FIXME this will disabled direct rendering
1195 * even if a new pixel format is renegociated
1197 p_sys->b_direct_rendering = false;
1198 p_context->draw_horiz_band = NULL;
1203 /* Fallback to default behaviour */
1204 return avcodec_default_get_format( p_context, pi_fmt );