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 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, "ffmpeg-workaround-bugs" );
236 p_sys->p_context->error_recognition =
237 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
239 if( var_CreateGetBool( p_dec, "grayscale" ) )
240 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
242 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
243 if( i_val ) p_sys->p_context->debug_mv = i_val;
245 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
246 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
248 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
249 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
250 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
251 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
252 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
254 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
255 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
257 /* ***** ffmpeg frame skipping ***** */
258 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
260 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
263 p_sys->p_context->skip_frame = AVDISCARD_NONE;
266 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
269 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
272 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
275 p_sys->p_context->skip_frame = AVDISCARD_ALL;
278 p_sys->p_context->skip_frame = AVDISCARD_NONE;
281 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
283 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
286 p_sys->p_context->skip_idct = AVDISCARD_NONE;
289 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
292 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
295 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
298 p_sys->p_context->skip_idct = AVDISCARD_ALL;
301 p_sys->p_context->skip_idct = AVDISCARD_NONE;
304 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
306 /* ***** ffmpeg direct rendering ***** */
307 p_sys->b_direct_rendering = false;
308 p_sys->i_direct_rendering_used = -1;
309 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
310 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
311 /* No idea why ... but this fixes flickering on some TSCC streams */
312 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
313 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
314 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
315 don't have idea howto implement fallback to libvpx decoder */
316 p_sys->i_codec_id != CODEC_ID_VP8 &&
318 !p_sys->p_context->debug_mv )
320 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
321 * so we need to do another check in ffmpeg_GetFrameBuf() */
322 p_sys->b_direct_rendering = true;
325 /* ffmpeg doesn't properly release old pictures when frames are skipped */
326 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
327 if( p_sys->b_direct_rendering )
329 msg_Dbg( p_dec, "trying to use direct rendering" );
330 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
334 msg_Dbg( p_dec, "direct rendering is disabled" );
337 /* Always use our get_buffer wrapper so we can calculate the
339 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
340 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
341 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
342 p_sys->p_context->opaque = p_dec;
344 #ifdef HAVE_AVCODEC_MT
345 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
346 if( i_thread_count <= 0 )
348 i_thread_count = vlc_GetCPUCount();
349 if( i_thread_count > 1 )
352 i_thread_count = __MIN( i_thread_count, 16 );
353 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
354 p_sys->p_context->thread_count = i_thread_count;
357 #ifdef HAVE_AVCODEC_VA
358 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
360 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
361 i_codec_id == CODEC_ID_MPEG4 ||
362 i_codec_id == CODEC_ID_H264 ||
363 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
365 #ifdef HAVE_AVCODEC_MT
366 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
368 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
369 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
371 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
372 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
374 msg_Warn( p_dec, "threaded slice decoding is not compatible with ffmpeg-hw, disabled" );
375 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
378 p_sys->p_context->get_format = ffmpeg_GetFormat;
381 #ifdef HAVE_AVCODEC_MT
382 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
383 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
387 /* ***** misc init ***** */
388 p_sys->i_pts = VLC_TS_INVALID;
389 p_sys->b_has_b_frames = false;
390 p_sys->b_first_frame = true;
391 p_sys->b_flush = false;
392 p_sys->i_late_frames = 0;
394 /* Set output properties */
395 p_dec->fmt_out.i_cat = VIDEO_ES;
396 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
398 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
399 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
401 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
404 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
405 if( p_dec->fmt_in.video.p_palette )
407 p_sys->palette.palette_changed = 1;
409 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
415 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
416 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
417 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
418 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
420 p_sys->palette.palette[i] = c.u;
422 p_sys->p_context->palctrl = &p_sys->palette;
424 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
425 if( p_dec->fmt_out.video.p_palette )
426 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
428 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
430 p_sys->p_context->palctrl = &p_sys->palette;
433 /* ***** init this codec with special data ***** */
434 ffmpeg_InitCodec( p_dec );
436 /* ***** Open the codec ***** */
437 if( ffmpeg_OpenCodec( p_dec ) < 0 )
439 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
440 av_free( p_sys->p_ff_pic );
441 vlc_sem_destroy( &p_sys->sem_mt );
449 /*****************************************************************************
450 * DecodeVideo: Called to decode one or more frames
451 *****************************************************************************/
452 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
454 decoder_sys_t *p_sys = p_dec->p_sys;
455 AVCodecContext *p_context = p_sys->p_context;
457 int b_null_size = false;
460 if( !pp_block || !*pp_block )
463 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
465 ffmpeg_InitCodec( p_dec );
466 if( p_sys->b_delayed_open )
468 if( ffmpeg_OpenCodec( p_dec ) )
469 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
474 if( p_sys->b_delayed_open )
476 block_Release( p_block );
480 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
482 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
484 p_sys->i_late_frames = 0;
486 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
487 avcodec_flush_buffers( p_context );
489 block_Release( p_block );
493 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
495 /* Do not care about late frames when prerolling
496 * TODO avoid decoding of non reference frame
497 * (ie all B except for H264 where it depends only on nal_ref_idc) */
498 p_sys->i_late_frames = 0;
501 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
502 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
504 if( p_sys->i_pts > VLC_TS_INVALID )
506 msg_Err( p_dec, "more than 5 seconds of late video -> "
507 "dropping frame (computer too slow ?)" );
508 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
510 block_Release( p_block );
511 p_sys->i_late_frames--;
515 /* A good idea could be to decode all I pictures and see for the other */
516 if( !p_dec->b_pace_control &&
518 (p_sys->i_late_frames > 4) )
521 if( p_sys->i_late_frames < 12 )
523 p_context->skip_frame =
524 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
525 AVDISCARD_NONREF : p_sys->i_skip_frame;
529 /* picture too late, won't decode
530 * but break picture until a new I, and for mpeg4 ...*/
531 p_sys->i_late_frames--; /* needed else it will never be decrease */
532 block_Release( p_block );
538 if( p_sys->b_hurry_up )
539 p_context->skip_frame = p_sys->i_skip_frame;
540 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
546 if( p_context->width <= 0 || p_context->height <= 0 )
548 if( p_sys->b_hurry_up )
549 p_context->skip_frame = p_sys->i_skip_frame;
552 else if( !b_drawpicture )
554 /* It creates broken picture
555 * FIXME either our parser or ffmpeg is broken */
557 if( p_sys->b_hurry_up )
558 p_context->skip_frame = __MAX( p_context->skip_frame,
564 * Do the actual decoding now */
566 /* Don't forget that ffmpeg requires a little more bytes
567 * that the real frame size */
568 if( p_block->i_buffer > 0 )
570 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
572 p_block = block_Realloc( p_block, 0,
573 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
576 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
578 memset( p_block->p_buffer + p_block->i_buffer, 0,
579 FF_INPUT_BUFFER_PADDING_SIZE );
582 while( p_block->i_buffer > 0 || p_sys->b_flush )
584 int i_used, b_gotpicture;
588 /* Set the PTS/DTS in the context reordered_opaque field */
589 if( p_block->i_pts > VLC_TS_INVALID )
590 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
591 else if( p_block->i_dts > VLC_TS_INVALID )
592 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
594 p_context->reordered_opaque = INT64_MIN;
595 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
597 /* Make sure we don't reuse the same timestamps twice */
599 p_block->i_dts = VLC_TS_INVALID;
603 av_init_packet( &pkt );
604 pkt.data = p_block->p_buffer;
605 pkt.size = p_block->i_buffer;
606 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
607 &b_gotpicture, &pkt );
609 if( b_null_size && !p_sys->b_flush &&
610 p_context->width > 0 && p_context->height > 0 )
612 /* Reparse it to not drop the I frame */
614 if( p_sys->b_hurry_up )
615 p_context->skip_frame = p_sys->i_skip_frame;
616 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
617 &b_gotpicture, &pkt );
622 p_sys->b_first_frame = true;
624 if( p_block->i_buffer <= 0 )
625 p_sys->b_flush = false;
630 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
632 block_Release( p_block );
635 else if( i_used > p_block->i_buffer ||
636 p_context->thread_count > 1 )
638 i_used = p_block->i_buffer;
642 p_block->i_buffer -= i_used;
643 p_block->p_buffer += i_used;
645 /* Nothing to display */
648 if( i_used == 0 ) break;
652 /* Sanity check (seems to be needed for some streams) */
653 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
655 p_sys->b_has_b_frames = true;
658 /* Compute the PTS */
659 mtime_t i_pts = VLC_TS_INVALID;
660 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
662 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
663 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
666 if( !p_context->has_b_frames ||
667 !p_sys->b_has_b_frames ||
668 !p_sys->p_ff_pic->reference ||
669 p_sys->i_pts <= VLC_TS_INVALID )
672 /* Guess what ? The rules are different for Real Video :( */
673 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
674 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
675 p_sys->b_has_b_frames )
677 i_pts = VLC_TS_INVALID;
678 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
686 if( i_pts <= VLC_TS_INVALID )
687 i_pts = p_sys->i_pts;
689 /* Interpolate the next PTS */
690 if( i_pts > VLC_TS_INVALID )
691 p_sys->i_pts = i_pts;
692 if( p_sys->i_pts > VLC_TS_INVALID )
694 /* interpolate the next PTS */
695 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
696 p_dec->fmt_in.video.i_frame_rate_base > 0 )
698 p_sys->i_pts += INT64_C(1000000) *
699 (2 + p_sys->p_ff_pic->repeat_pict) *
700 p_dec->fmt_in.video.i_frame_rate_base /
701 (2 * p_dec->fmt_in.video.i_frame_rate);
703 else if( p_context->time_base.den > 0 )
705 int i_tick = p_context->ticks_per_frame;
709 p_sys->i_pts += INT64_C(1000000) *
710 (2 + p_sys->p_ff_pic->repeat_pict) *
711 i_tick * p_context->time_base.num /
712 (2 * p_context->time_base.den);
716 /* Update frame late count (except when doing preroll) */
717 mtime_t i_display_date = 0;
718 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
719 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
721 if( i_display_date > 0 && i_display_date <= mdate() )
723 p_sys->i_late_frames++;
724 if( p_sys->i_late_frames == 1 )
725 p_sys->i_late_frames_start = mdate();
729 p_sys->i_late_frames = 0;
732 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
735 if( !p_sys->p_ff_pic->opaque )
737 /* Get a new picture */
738 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
741 block_Release( p_block );
745 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
747 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
751 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
752 decoder_LinkPicture( p_dec, p_pic );
755 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
757 /* Fetch again the aspect ratio in case it changed */
758 p_dec->fmt_out.video.i_sar_num
759 = p_context->sample_aspect_ratio.num;
760 p_dec->fmt_out.video.i_sar_den
761 = p_context->sample_aspect_ratio.den;
763 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
765 p_dec->fmt_out.video.i_sar_num = 1;
766 p_dec->fmt_out.video.i_sar_den = 1;
770 /* Send decoded frame to vout */
771 if( i_pts > VLC_TS_INVALID)
775 if( p_sys->b_first_frame )
777 /* Hack to force display of still pictures */
778 p_sys->b_first_frame = false;
779 p_pic->b_force = true;
782 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
783 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
784 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
786 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
787 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
788 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
789 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
790 p_pic->i_qstride * i_mb_h );
791 switch( p_sys->p_ff_pic->qscale_type )
793 case FF_QSCALE_TYPE_MPEG1:
794 p_pic->i_qtype = QTYPE_MPEG1;
796 case FF_QSCALE_TYPE_MPEG2:
797 p_pic->i_qtype = QTYPE_MPEG2;
799 case FF_QSCALE_TYPE_H264:
800 p_pic->i_qtype = QTYPE_H264;
808 decoder_DeletePicture( p_dec, p_pic );
812 block_Release( p_block );
816 /*****************************************************************************
817 * EndVideo: decoder destruction
818 *****************************************************************************
819 * This function is called when the thread ends after a successful
821 *****************************************************************************/
822 void EndVideoDec( decoder_t *p_dec )
824 decoder_sys_t *p_sys = p_dec->p_sys;
828 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
829 if( p_sys->p_context->codec )
830 avcodec_flush_buffers( p_sys->p_context );
834 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
838 vlc_va_Delete( p_sys->p_va );
841 vlc_sem_destroy( &p_sys->sem_mt );
844 /*****************************************************************************
845 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
846 *****************************************************************************/
847 static void ffmpeg_InitCodec( decoder_t *p_dec )
849 decoder_sys_t *p_sys = p_dec->p_sys;
850 int i_size = p_dec->fmt_in.i_extra;
852 if( !i_size ) return;
854 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
858 p_sys->p_context->extradata_size = i_size + 12;
859 p = p_sys->p_context->extradata =
860 malloc( p_sys->p_context->extradata_size );
864 memcpy( &p[0], "SVQ3", 4 );
865 memset( &p[4], 0, 8 );
866 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
868 /* Now remove all atoms before the SMI one */
869 if( p_sys->p_context->extradata_size > 0x5a &&
870 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
872 uint8_t *psz = &p[0x52];
874 while( psz < &p[p_sys->p_context->extradata_size - 8] )
876 int i_size = GetDWBE( psz );
879 /* FIXME handle 1 as long size */
882 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
884 memmove( &p[0x52], psz,
885 &p[p_sys->p_context->extradata_size] - psz );
895 p_sys->p_context->extradata_size = i_size;
896 p_sys->p_context->extradata =
897 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
898 if( p_sys->p_context->extradata )
900 memcpy( p_sys->p_context->extradata,
901 p_dec->fmt_in.p_extra, i_size );
902 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
903 0, FF_INPUT_BUFFER_PADDING_SIZE );
908 /*****************************************************************************
909 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
910 * picture_t structure (when not in direct rendering mode).
911 *****************************************************************************/
912 static void ffmpeg_CopyPicture( decoder_t *p_dec,
913 picture_t *p_pic, AVFrame *p_ff_pic )
915 decoder_sys_t *p_sys = p_dec->p_sys;
919 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
921 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
923 int i_plane, i_size, i_line;
924 uint8_t *p_dst, *p_src;
925 int i_src_stride, i_dst_stride;
927 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
929 p_src = p_ff_pic->data[i_plane];
930 p_dst = p_pic->p[i_plane].p_pixels;
931 i_src_stride = p_ff_pic->linesize[i_plane];
932 i_dst_stride = p_pic->p[i_plane].i_pitch;
934 i_size = __MIN( i_src_stride, i_dst_stride );
935 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
938 vlc_memcpy( p_dst, p_src, i_size );
939 p_src += i_src_stride;
940 p_dst += i_dst_stride;
946 msg_Err( p_dec, "don't know how to convert chroma %i",
947 p_sys->p_context->pix_fmt );
952 /*****************************************************************************
953 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
954 *****************************************************************************
955 * It is used for direct rendering as well as to get the right PTS for each
956 * decoded picture (even in indirect rendering mode).
957 *****************************************************************************/
958 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
961 decoder_t *p_dec = (decoder_t *)p_context->opaque;
962 decoder_sys_t *p_sys = p_dec->p_sys;
966 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
967 p_ff_pic->opaque = NULL;
971 #ifdef HAVE_AVCODEC_VA
972 /* hwaccel_context is not present in old ffmpeg version */
973 if( vlc_va_Setup( p_sys->p_va,
974 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
975 p_context->width, p_context->height ) )
977 msg_Err( p_dec, "vlc_va_Setup failed" );
985 p_ff_pic->type = FF_BUFFER_TYPE_USER;
986 /* FIXME what is that, should give good value */
987 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
989 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
991 msg_Err( p_dec, "VaGrabSurface failed" );
996 else if( !p_sys->b_direct_rendering )
998 /* Not much to do in indirect rendering mode. */
999 return avcodec_default_get_buffer( p_context, p_ff_pic );
1003 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1004 * so we need to check for direct rendering again. */
1006 int i_width = p_context->width;
1007 int i_height = p_context->height;
1008 avcodec_align_dimensions( p_context, &i_width, &i_height );
1010 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1011 p_context->pix_fmt == PIX_FMT_PAL8 )
1014 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1016 /* Get a new picture */
1017 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1020 bool b_compatible = true;
1021 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1022 p_pic->p[0].i_lines < i_height )
1023 b_compatible = false;
1024 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1027 switch( p_sys->i_codec_id )
1037 i_align = i == 0 ? 16 : 8;
1040 if( p_pic->p[i].i_pitch % i_align )
1041 b_compatible = false;
1042 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1043 b_compatible = false;
1045 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1047 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1048 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1049 b_compatible = false;
1053 decoder_DeletePicture( p_dec, p_pic );
1057 if( p_sys->i_direct_rendering_used != 1 )
1059 msg_Dbg( p_dec, "using direct rendering" );
1060 p_sys->i_direct_rendering_used = 1;
1063 p_context->draw_horiz_band = NULL;
1065 p_ff_pic->opaque = (void*)p_pic;
1066 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1067 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1068 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1069 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1070 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1072 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1073 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1074 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1075 p_ff_pic->linesize[3] = 0;
1077 /* FIXME what is that, should give good value */
1078 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1084 if( p_sys->i_direct_rendering_used != 0 )
1086 msg_Warn( p_dec, "disabling direct rendering" );
1087 p_sys->i_direct_rendering_used = 0;
1090 return avcodec_default_get_buffer( p_context, p_ff_pic );
1092 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1094 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1096 /* We always use default reget function, it works perfectly fine */
1097 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1100 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1103 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1104 decoder_sys_t *p_sys = p_dec->p_sys;
1108 vlc_va_Release( p_sys->p_va, p_ff_pic );
1110 else if( !p_ff_pic->opaque )
1112 /* We can end up here without the AVFrame being allocated by
1113 * avcodec_default_get_buffer() if VA is used and the frame is
1114 * released when the decoder is closed
1116 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1117 avcodec_default_release_buffer( p_context, p_ff_pic );
1121 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1123 decoder_UnlinkPicture( p_dec, p_pic );
1125 for( int i = 0; i < 4; i++ )
1126 p_ff_pic->data[i] = NULL;
1129 #ifdef HAVE_AVCODEC_VA
1130 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1131 const enum PixelFormat *pi_fmt )
1133 decoder_t *p_dec = p_context->opaque;
1134 decoder_sys_t *p_sys = p_dec->p_sys;
1138 vlc_va_Delete( p_sys->p_va );
1142 /* Try too look for a supported hw acceleration */
1143 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1145 static const char *ppsz_name[PIX_FMT_NB] = {
1146 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1147 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1148 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1149 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1150 #ifdef HAVE_AVCODEC_DXVA2
1151 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1153 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1154 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1156 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1158 /* Only VLD supported */
1159 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1161 if( !var_InheritBool( p_dec, "xlib" ) )
1163 msg_Warn( p_dec, "Ignoring VA API" );
1166 #ifdef HAVE_AVCODEC_VAAPI
1167 msg_Dbg( p_dec, "Trying VA API" );
1168 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1170 msg_Warn( p_dec, "Failed to open VA API" );
1175 #ifdef HAVE_AVCODEC_DXVA2
1176 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1178 msg_Dbg( p_dec, "Trying DXVA2" );
1179 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1181 msg_Warn( p_dec, "Failed to open DXVA2" );
1186 p_context->width > 0 && p_context->height > 0 )
1188 /* We try to call vlc_va_Setup when possible to detect errors when
1189 * possible (later is too late) */
1190 if( vlc_va_Setup( p_sys->p_va,
1191 &p_context->hwaccel_context,
1192 &p_dec->fmt_out.video.i_chroma,
1193 p_context->width, p_context->height ) )
1195 msg_Err( p_dec, "vlc_va_Setup failed" );
1196 vlc_va_Delete( p_sys->p_va );
1203 if( p_sys->p_va->description )
1204 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1206 /* FIXME this will disabled direct rendering
1207 * even if a new pixel format is renegociated
1209 p_sys->b_direct_rendering = false;
1210 p_context->draw_horiz_band = NULL;
1215 /* Fallback to default behaviour */
1216 return avcodec_default_get_format( p_context, pi_fmt );