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 #include <libavcodec/avcodec.h>
48 #include <libavutil/mem.h>
49 #ifdef HAVE_AVCODEC_VAAPI
50 # include <libavcodec/vaapi.h>
52 #ifdef HAVE_AVCODEC_DXVA2
53 # include <libavcodec/dxva2.h>
55 #ifdef HAVE_AVCODEC_VDA
56 # include <libavcodec/vda.h>
61 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2) || defined(HAVE_AVCODEC_VDA)
62 # define HAVE_AVCODEC_VA
65 /*****************************************************************************
66 * decoder_sys_t : decoder descriptor
67 *****************************************************************************/
70 AVCODEC_COMMON_MEMBERS
72 /* Video decoder specific part */
77 /* for frame skipping algo */
79 enum AVDiscard i_skip_frame;
80 enum AVDiscard i_skip_idct;
82 /* how many decoded frames are late */
84 mtime_t i_late_frames_start;
86 /* for direct rendering */
87 bool b_direct_rendering;
88 int i_direct_rendering_used;
92 /* Hack to force display of still pictures */
97 #if LIBAVCODEC_VERSION_MAJOR < 54
98 AVPaletteControl palette;
112 #ifdef HAVE_AVCODEC_MT
113 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
114 # define post_mt(s) vlc_sem_post( &s->sem_mt )
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 p_dec->fmt_out.video.i_width = p_context->width;
151 p_dec->fmt_out.video.i_height = p_context->height;
153 if( !p_context->width || !p_context->height )
155 return NULL; /* invalid display size */
158 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
160 /* we are doomed, but not really, because most codecs set their pix_fmt
162 * FIXME does it make sense here ? */
163 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
165 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
167 /* If an aspect-ratio was specified in the input format then force it */
168 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
170 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
171 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
175 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
176 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
178 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
180 p_dec->fmt_out.video.i_sar_num = 1;
181 p_dec->fmt_out.video.i_sar_den = 1;
185 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
186 p_dec->fmt_in.video.i_frame_rate_base > 0 )
188 p_dec->fmt_out.video.i_frame_rate =
189 p_dec->fmt_in.video.i_frame_rate;
190 p_dec->fmt_out.video.i_frame_rate_base =
191 p_dec->fmt_in.video.i_frame_rate_base;
193 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
195 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
196 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
199 return decoder_NewPicture( p_dec );
202 /*****************************************************************************
203 * InitVideo: initialize the video decoder
204 *****************************************************************************
205 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
206 * opened (done after the first decoded frame).
207 *****************************************************************************/
208 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
209 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
211 decoder_sys_t *p_sys;
214 /* Allocate the memory needed to store the decoder's structure */
215 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
218 p_codec->type = AVMEDIA_TYPE_VIDEO;
219 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
220 p_context->codec_id = i_codec_id;
221 p_sys->p_context = p_context;
222 p_sys->p_codec = p_codec;
223 p_sys->i_codec_id = i_codec_id;
224 p_sys->psz_namecodec = psz_namecodec;
225 p_sys->p_ff_pic = avcodec_alloc_frame();
226 p_sys->b_delayed_open = true;
228 vlc_sem_init( &p_sys->sem_mt, 0 );
230 /* ***** Fill p_context with init values ***** */
231 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
233 /* ***** Get configuration of ffmpeg plugin ***** */
234 p_sys->p_context->workaround_bugs =
235 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
236 #if LIBAVCODEC_VERSION_MAJOR < 54
237 p_sys->p_context->error_recognition =
239 p_sys->p_context->err_recognition =
241 var_InheritInteger( p_dec, "avcodec-error-resilience" );
243 if( var_CreateGetBool( p_dec, "grayscale" ) )
244 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
246 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
247 if( i_val ) p_sys->p_context->debug_mv = i_val;
249 i_val = var_CreateGetInteger( p_dec, "avcodec-lowres" );
250 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
252 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
253 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
254 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
255 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
256 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
258 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
259 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
261 /* ***** ffmpeg frame skipping ***** */
262 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
264 switch( var_CreateGetInteger( p_dec, "avcodec-skip-frame" ) )
267 p_sys->p_context->skip_frame = AVDISCARD_NONE;
270 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
273 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
276 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
279 p_sys->p_context->skip_frame = AVDISCARD_ALL;
282 p_sys->p_context->skip_frame = AVDISCARD_NONE;
285 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
287 switch( var_CreateGetInteger( p_dec, "avcodec-skip-idct" ) )
290 p_sys->p_context->skip_idct = AVDISCARD_NONE;
293 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
296 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
299 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
302 p_sys->p_context->skip_idct = AVDISCARD_ALL;
305 p_sys->p_context->skip_idct = AVDISCARD_NONE;
308 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
310 /* ***** ffmpeg direct rendering ***** */
311 p_sys->b_direct_rendering = false;
312 p_sys->i_direct_rendering_used = -1;
313 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
314 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
315 /* No idea why ... but this fixes flickering on some TSCC streams */
316 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
317 p_sys->i_codec_id != CODEC_ID_CINEPAK &&
318 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
319 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
320 don't have idea howto implement fallback to libvpx decoder */
321 p_sys->i_codec_id != CODEC_ID_VP8 &&
323 !p_sys->p_context->debug_mv )
325 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
326 * so we need to do another check in ffmpeg_GetFrameBuf() */
327 p_sys->b_direct_rendering = true;
330 /* ffmpeg doesn't properly release old pictures when frames are skipped */
331 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
332 if( p_sys->b_direct_rendering )
334 msg_Dbg( p_dec, "trying to use direct rendering" );
335 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
339 msg_Dbg( p_dec, "direct rendering is disabled" );
342 /* Always use our get_buffer wrapper so we can calculate the
344 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
345 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
346 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
347 p_sys->p_context->opaque = p_dec;
349 #ifdef HAVE_AVCODEC_MT
350 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
351 if( i_thread_count <= 0 )
353 i_thread_count = vlc_GetCPUCount();
354 if( i_thread_count > 1 )
357 //FIXME: take in count the decoding time
358 i_thread_count = __MIN( i_thread_count, 4 );
360 i_thread_count = __MIN( i_thread_count, 16 );
361 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
362 p_sys->p_context->thread_count = i_thread_count;
365 #ifdef HAVE_AVCODEC_VA
366 const bool b_use_hw = var_CreateGetBool( p_dec, "avcodec-hw" );
368 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
369 i_codec_id == CODEC_ID_MPEG4 ||
370 i_codec_id == CODEC_ID_H264 ||
371 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
373 #ifdef HAVE_AVCODEC_MT
374 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
376 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
377 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
379 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
380 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
382 msg_Warn( p_dec, "threaded slice decoding is not compatible with ffmpeg-hw, disabled" );
383 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
386 p_sys->p_context->get_format = ffmpeg_GetFormat;
389 #ifdef HAVE_AVCODEC_MT
390 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
391 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
395 /* ***** misc init ***** */
396 p_sys->i_pts = VLC_TS_INVALID;
397 p_sys->b_has_b_frames = false;
398 p_sys->b_first_frame = true;
399 p_sys->b_flush = false;
400 p_sys->i_late_frames = 0;
402 /* Set output properties */
403 p_dec->fmt_out.i_cat = VIDEO_ES;
404 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
406 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
407 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
409 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
411 #if LIBAVCODEC_VERSION_MAJOR < 54
413 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
414 if( p_dec->fmt_in.video.p_palette )
416 p_sys->palette.palette_changed = 1;
418 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
424 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
425 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
426 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
427 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
429 p_sys->palette.palette[i] = c.u;
431 p_sys->p_context->palctrl = &p_sys->palette;
433 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
434 if( p_dec->fmt_out.video.p_palette )
435 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
437 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
439 p_sys->p_context->palctrl = &p_sys->palette;
445 /* ***** init this codec with special data ***** */
446 ffmpeg_InitCodec( p_dec );
448 /* ***** Open the codec ***** */
449 if( ffmpeg_OpenCodec( p_dec ) < 0 )
451 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
452 av_free( p_sys->p_ff_pic );
453 vlc_sem_destroy( &p_sys->sem_mt );
461 /*****************************************************************************
462 * DecodeVideo: Called to decode one or more frames
463 *****************************************************************************/
464 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
466 decoder_sys_t *p_sys = p_dec->p_sys;
467 AVCodecContext *p_context = p_sys->p_context;
469 int b_null_size = false;
472 if( !pp_block || !*pp_block )
475 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
477 ffmpeg_InitCodec( p_dec );
478 if( p_sys->b_delayed_open )
480 if( ffmpeg_OpenCodec( p_dec ) )
481 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
486 if( p_sys->b_delayed_open )
488 block_Release( p_block );
492 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
494 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
496 p_sys->i_late_frames = 0;
498 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
499 avcodec_flush_buffers( p_context );
501 block_Release( p_block );
505 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
507 /* Do not care about late frames when prerolling
508 * TODO avoid decoding of non reference frame
509 * (ie all B except for H264 where it depends only on nal_ref_idc) */
510 p_sys->i_late_frames = 0;
513 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
514 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
516 if( p_sys->i_pts > VLC_TS_INVALID )
518 msg_Err( p_dec, "more than 5 seconds of late video -> "
519 "dropping frame (computer too slow ?)" );
520 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
522 block_Release( p_block );
523 p_sys->i_late_frames--;
527 /* A good idea could be to decode all I pictures and see for the other */
528 if( !p_dec->b_pace_control &&
530 (p_sys->i_late_frames > 4) )
533 if( p_sys->i_late_frames < 12 )
535 p_context->skip_frame =
536 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
537 AVDISCARD_NONREF : p_sys->i_skip_frame;
541 /* picture too late, won't decode
542 * but break picture until a new I, and for mpeg4 ...*/
543 p_sys->i_late_frames--; /* needed else it will never be decrease */
544 block_Release( p_block );
550 if( p_sys->b_hurry_up )
551 p_context->skip_frame = p_sys->i_skip_frame;
552 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
558 if( p_context->width <= 0 || p_context->height <= 0 )
560 if( p_sys->b_hurry_up )
561 p_context->skip_frame = p_sys->i_skip_frame;
564 else if( !b_drawpicture )
566 /* It creates broken picture
567 * FIXME either our parser or ffmpeg is broken */
569 if( p_sys->b_hurry_up )
570 p_context->skip_frame = __MAX( p_context->skip_frame,
576 * Do the actual decoding now */
578 /* Don't forget that ffmpeg requires a little more bytes
579 * that the real frame size */
580 if( p_block->i_buffer > 0 )
582 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
584 p_block = block_Realloc( p_block, 0,
585 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
588 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
590 memset( p_block->p_buffer + p_block->i_buffer, 0,
591 FF_INPUT_BUFFER_PADDING_SIZE );
594 while( p_block->i_buffer > 0 || p_sys->b_flush )
596 int i_used, b_gotpicture;
600 /* Set the PTS/DTS in the context reordered_opaque field */
601 if( p_block->i_pts > VLC_TS_INVALID )
602 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
603 else if( p_block->i_dts > VLC_TS_INVALID )
604 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
606 p_context->reordered_opaque = INT64_MIN;
607 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
609 /* Make sure we don't reuse the same timestamps twice */
611 p_block->i_dts = VLC_TS_INVALID;
615 av_init_packet( &pkt );
616 pkt.data = p_block->p_buffer;
617 pkt.size = p_block->i_buffer;
618 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
619 &b_gotpicture, &pkt );
621 if( b_null_size && !p_sys->b_flush &&
622 p_context->width > 0 && p_context->height > 0 )
624 /* Reparse it to not drop the I frame */
626 if( p_sys->b_hurry_up )
627 p_context->skip_frame = p_sys->i_skip_frame;
628 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
629 &b_gotpicture, &pkt );
634 p_sys->b_first_frame = true;
636 if( p_block->i_buffer <= 0 )
637 p_sys->b_flush = false;
642 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
644 block_Release( p_block );
647 else if( i_used > p_block->i_buffer ||
648 p_context->thread_count > 1 )
650 i_used = p_block->i_buffer;
654 p_block->i_buffer -= i_used;
655 p_block->p_buffer += i_used;
657 /* Nothing to display */
660 if( i_used == 0 ) break;
664 /* Sanity check (seems to be needed for some streams) */
665 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
667 p_sys->b_has_b_frames = true;
670 /* Compute the PTS */
671 mtime_t i_pts = VLC_TS_INVALID;
672 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
674 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
675 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
678 if( !p_context->has_b_frames ||
679 !p_sys->b_has_b_frames ||
680 !p_sys->p_ff_pic->reference ||
681 p_sys->i_pts <= VLC_TS_INVALID )
684 /* Guess what ? The rules are different for Real Video :( */
685 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
686 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
687 p_sys->b_has_b_frames )
689 i_pts = VLC_TS_INVALID;
690 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
698 if( i_pts <= VLC_TS_INVALID )
699 i_pts = p_sys->i_pts;
701 /* Interpolate the next PTS */
702 if( i_pts > VLC_TS_INVALID )
703 p_sys->i_pts = i_pts;
704 if( p_sys->i_pts > VLC_TS_INVALID )
706 /* interpolate the next PTS */
707 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
708 p_dec->fmt_in.video.i_frame_rate_base > 0 )
710 p_sys->i_pts += INT64_C(1000000) *
711 (2 + p_sys->p_ff_pic->repeat_pict) *
712 p_dec->fmt_in.video.i_frame_rate_base /
713 (2 * p_dec->fmt_in.video.i_frame_rate);
715 else if( p_context->time_base.den > 0 )
717 int i_tick = p_context->ticks_per_frame;
721 p_sys->i_pts += INT64_C(1000000) *
722 (2 + p_sys->p_ff_pic->repeat_pict) *
723 i_tick * p_context->time_base.num /
724 (2 * p_context->time_base.den);
728 /* Update frame late count (except when doing preroll) */
729 mtime_t i_display_date = 0;
730 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
731 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
733 if( i_display_date > 0 && i_display_date <= mdate() )
735 p_sys->i_late_frames++;
736 if( p_sys->i_late_frames == 1 )
737 p_sys->i_late_frames_start = mdate();
741 p_sys->i_late_frames = 0;
744 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
747 if( !p_sys->p_ff_pic->opaque )
749 /* Get a new picture */
750 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
753 block_Release( p_block );
757 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
759 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
763 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
764 decoder_LinkPicture( p_dec, p_pic );
767 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
769 /* Fetch again the aspect ratio in case it changed */
770 p_dec->fmt_out.video.i_sar_num
771 = p_context->sample_aspect_ratio.num;
772 p_dec->fmt_out.video.i_sar_den
773 = p_context->sample_aspect_ratio.den;
775 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
777 p_dec->fmt_out.video.i_sar_num = 1;
778 p_dec->fmt_out.video.i_sar_den = 1;
782 /* Send decoded frame to vout */
783 if( i_pts > VLC_TS_INVALID)
787 if( p_sys->b_first_frame )
789 /* Hack to force display of still pictures */
790 p_sys->b_first_frame = false;
791 p_pic->b_force = true;
794 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
795 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
796 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
798 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
799 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
800 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
801 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
802 p_pic->i_qstride * i_mb_h );
803 switch( p_sys->p_ff_pic->qscale_type )
805 case FF_QSCALE_TYPE_MPEG1:
806 p_pic->i_qtype = QTYPE_MPEG1;
808 case FF_QSCALE_TYPE_MPEG2:
809 p_pic->i_qtype = QTYPE_MPEG2;
811 case FF_QSCALE_TYPE_H264:
812 p_pic->i_qtype = QTYPE_H264;
820 decoder_DeletePicture( p_dec, p_pic );
824 block_Release( p_block );
828 /*****************************************************************************
829 * EndVideo: decoder destruction
830 *****************************************************************************
831 * This function is called when the thread ends after a successful
833 *****************************************************************************/
834 void EndVideoDec( decoder_t *p_dec )
836 decoder_sys_t *p_sys = p_dec->p_sys;
840 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
841 if( p_sys->p_context->codec )
842 avcodec_flush_buffers( p_sys->p_context );
846 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
850 vlc_va_Delete( p_sys->p_va );
853 vlc_sem_destroy( &p_sys->sem_mt );
856 /*****************************************************************************
857 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
858 *****************************************************************************/
859 static void ffmpeg_InitCodec( decoder_t *p_dec )
861 decoder_sys_t *p_sys = p_dec->p_sys;
862 int i_size = p_dec->fmt_in.i_extra;
864 if( !i_size ) return;
866 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
870 p_sys->p_context->extradata_size = i_size + 12;
871 p = p_sys->p_context->extradata =
872 malloc( p_sys->p_context->extradata_size );
876 memcpy( &p[0], "SVQ3", 4 );
877 memset( &p[4], 0, 8 );
878 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
880 /* Now remove all atoms before the SMI one */
881 if( p_sys->p_context->extradata_size > 0x5a &&
882 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
884 uint8_t *psz = &p[0x52];
886 while( psz < &p[p_sys->p_context->extradata_size - 8] )
888 int i_size = GetDWBE( psz );
891 /* FIXME handle 1 as long size */
894 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
896 memmove( &p[0x52], psz,
897 &p[p_sys->p_context->extradata_size] - psz );
907 p_sys->p_context->extradata_size = i_size;
908 p_sys->p_context->extradata =
909 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
910 if( p_sys->p_context->extradata )
912 memcpy( p_sys->p_context->extradata,
913 p_dec->fmt_in.p_extra, i_size );
914 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
915 0, FF_INPUT_BUFFER_PADDING_SIZE );
920 /*****************************************************************************
921 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
922 * picture_t structure (when not in direct rendering mode).
923 *****************************************************************************/
924 static void ffmpeg_CopyPicture( decoder_t *p_dec,
925 picture_t *p_pic, AVFrame *p_ff_pic )
927 decoder_sys_t *p_sys = p_dec->p_sys;
931 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
933 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
935 int i_plane, i_size, i_line;
936 uint8_t *p_dst, *p_src;
937 int i_src_stride, i_dst_stride;
939 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
941 p_src = p_ff_pic->data[i_plane];
942 p_dst = p_pic->p[i_plane].p_pixels;
943 i_src_stride = p_ff_pic->linesize[i_plane];
944 i_dst_stride = p_pic->p[i_plane].i_pitch;
946 i_size = __MIN( i_src_stride, i_dst_stride );
947 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
950 memcpy( p_dst, p_src, i_size );
951 p_src += i_src_stride;
952 p_dst += i_dst_stride;
958 msg_Err( p_dec, "don't know how to convert chroma %i",
959 p_sys->p_context->pix_fmt );
964 /*****************************************************************************
965 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
966 *****************************************************************************
967 * It is used for direct rendering as well as to get the right PTS for each
968 * decoded picture (even in indirect rendering mode).
969 *****************************************************************************/
970 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
973 decoder_t *p_dec = (decoder_t *)p_context->opaque;
974 decoder_sys_t *p_sys = p_dec->p_sys;
978 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
979 p_ff_pic->opaque = NULL;
983 #ifdef HAVE_AVCODEC_VA
984 /* hwaccel_context is not present in old ffmpeg version */
985 if( vlc_va_Setup( p_sys->p_va,
986 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
987 p_context->width, p_context->height ) )
989 msg_Err( p_dec, "vlc_va_Setup failed" );
997 p_ff_pic->type = FF_BUFFER_TYPE_USER;
999 #if LIBAVCODEC_VERSION_MAJOR < 54
1000 p_ff_pic->age = 256*256*256*64;
1003 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
1005 msg_Err( p_dec, "VaGrabSurface failed" );
1010 else if( !p_sys->b_direct_rendering )
1012 /* Not much to do in indirect rendering mode. */
1013 return avcodec_default_get_buffer( p_context, p_ff_pic );
1017 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1018 * so we need to check for direct rendering again. */
1020 int i_width = p_context->width;
1021 int i_height = p_context->height;
1022 avcodec_align_dimensions( p_context, &i_width, &i_height );
1024 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1025 p_context->pix_fmt == PIX_FMT_PAL8 )
1028 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1030 /* Get a new picture */
1031 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1034 bool b_compatible = true;
1035 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1036 p_pic->p[0].i_lines < i_height )
1037 b_compatible = false;
1038 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1041 switch( p_sys->i_codec_id )
1051 i_align = i == 0 ? 16 : 8;
1054 if( p_pic->p[i].i_pitch % i_align )
1055 b_compatible = false;
1056 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1057 b_compatible = false;
1059 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1061 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1062 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1063 b_compatible = false;
1067 decoder_DeletePicture( p_dec, p_pic );
1071 if( p_sys->i_direct_rendering_used != 1 )
1073 msg_Dbg( p_dec, "using direct rendering" );
1074 p_sys->i_direct_rendering_used = 1;
1077 p_context->draw_horiz_band = NULL;
1079 p_ff_pic->opaque = (void*)p_pic;
1080 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1081 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1082 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1083 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1084 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1086 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1087 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1088 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1089 p_ff_pic->linesize[3] = 0;
1091 #if LIBAVCODEC_VERSION_MAJOR < 54
1092 p_ff_pic->age = 256*256*256*64;
1099 if( p_sys->i_direct_rendering_used != 0 )
1101 msg_Warn( p_dec, "disabling direct rendering" );
1102 p_sys->i_direct_rendering_used = 0;
1105 return avcodec_default_get_buffer( p_context, p_ff_pic );
1107 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1109 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1111 /* We always use default reget function, it works perfectly fine */
1112 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1115 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1118 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1119 decoder_sys_t *p_sys = p_dec->p_sys;
1123 vlc_va_Release( p_sys->p_va, p_ff_pic );
1125 else if( !p_ff_pic->opaque )
1127 /* We can end up here without the AVFrame being allocated by
1128 * avcodec_default_get_buffer() if VA is used and the frame is
1129 * released when the decoder is closed
1131 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1132 avcodec_default_release_buffer( p_context, p_ff_pic );
1136 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1138 decoder_UnlinkPicture( p_dec, p_pic );
1140 for( int i = 0; i < 4; i++ )
1141 p_ff_pic->data[i] = NULL;
1144 #ifdef HAVE_AVCODEC_VA
1145 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1146 const enum PixelFormat *pi_fmt )
1148 decoder_t *p_dec = p_context->opaque;
1149 decoder_sys_t *p_sys = p_dec->p_sys;
1153 vlc_va_Delete( p_sys->p_va );
1157 /* Try too look for a supported hw acceleration */
1158 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1160 static const char *ppsz_name[PIX_FMT_NB] = {
1161 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1162 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1163 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1164 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1165 #ifdef HAVE_AVCODEC_DXVA2
1166 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1168 #ifdef HAVE_AVCODEC_VDA
1169 [PIX_FMT_VDA_VLD] = "PIX_FMT_VDA_VLD",
1171 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1172 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1174 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1176 /* Only VLD supported */
1177 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1179 if( !var_InheritBool( p_dec, "xlib" ) )
1181 msg_Warn( p_dec, "Ignoring VA API" );
1184 #ifdef HAVE_AVCODEC_VAAPI
1185 msg_Dbg( p_dec, "Trying VA API" );
1186 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1188 msg_Warn( p_dec, "Failed to open VA API" );
1193 #ifdef HAVE_AVCODEC_DXVA2
1194 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1196 msg_Dbg( p_dec, "Trying DXVA2" );
1197 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1199 msg_Warn( p_dec, "Failed to open DXVA2" );
1203 #ifdef HAVE_AVCODEC_VDA
1204 if( pi_fmt[i] == PIX_FMT_VDA_VLD )
1206 msg_Dbg( p_dec, "Trying VDA" );
1207 p_sys->p_va = vlc_va_NewVDA( VLC_OBJECT(p_dec), p_sys->i_codec_id, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
1209 msg_Warn( p_dec, "Failed to open VDA" );
1214 p_context->width > 0 && p_context->height > 0 )
1216 /* We try to call vlc_va_Setup when possible to detect errors when
1217 * possible (later is too late) */
1218 if( vlc_va_Setup( p_sys->p_va,
1219 &p_context->hwaccel_context,
1220 &p_dec->fmt_out.video.i_chroma,
1221 p_context->width, p_context->height ) )
1223 msg_Err( p_dec, "vlc_va_Setup failed" );
1224 vlc_va_Delete( p_sys->p_va );
1231 if( p_sys->p_va->description )
1232 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1234 /* FIXME this will disabled direct rendering
1235 * even if a new pixel format is renegociated
1237 p_sys->b_direct_rendering = false;
1238 p_context->draw_horiz_band = NULL;
1243 /* Fallback to default behaviour */
1244 return avcodec_default_get_format( p_context, pi_fmt );