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 ) ||
367 ( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
368 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
371 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
372 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
375 p_sys->p_context->get_format = ffmpeg_GetFormat;
378 #ifdef HAVE_AVCODEC_MT
379 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
380 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
384 /* ***** misc init ***** */
385 p_sys->i_pts = VLC_TS_INVALID;
386 p_sys->b_has_b_frames = false;
387 p_sys->b_first_frame = true;
388 p_sys->b_flush = false;
389 p_sys->i_late_frames = 0;
391 /* Set output properties */
392 p_dec->fmt_out.i_cat = VIDEO_ES;
393 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
395 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
396 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
398 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
401 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
402 if( p_dec->fmt_in.video.p_palette )
404 p_sys->palette.palette_changed = 1;
406 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
412 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
413 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
414 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
415 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
417 p_sys->palette.palette[i] = c.u;
419 p_sys->p_context->palctrl = &p_sys->palette;
421 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
422 if( p_dec->fmt_out.video.p_palette )
423 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
425 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
427 p_sys->p_context->palctrl = &p_sys->palette;
430 /* ***** init this codec with special data ***** */
431 ffmpeg_InitCodec( p_dec );
433 /* ***** Open the codec ***** */
434 if( ffmpeg_OpenCodec( p_dec ) < 0 )
436 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
437 av_free( p_sys->p_ff_pic );
438 vlc_sem_destroy( &p_sys->sem_mt );
446 /*****************************************************************************
447 * DecodeVideo: Called to decode one or more frames
448 *****************************************************************************/
449 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
451 decoder_sys_t *p_sys = p_dec->p_sys;
452 AVCodecContext *p_context = p_sys->p_context;
454 int b_null_size = false;
457 if( !pp_block || !*pp_block )
460 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
462 ffmpeg_InitCodec( p_dec );
463 if( p_sys->b_delayed_open )
465 if( ffmpeg_OpenCodec( p_dec ) )
466 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
471 if( p_sys->b_delayed_open )
473 block_Release( p_block );
477 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
479 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
481 p_sys->i_late_frames = 0;
483 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
484 avcodec_flush_buffers( p_context );
486 block_Release( p_block );
490 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
492 /* Do not care about late frames when prerolling
493 * TODO avoid decoding of non reference frame
494 * (ie all B except for H264 where it depends only on nal_ref_idc) */
495 p_sys->i_late_frames = 0;
498 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
499 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
501 if( p_sys->i_pts > VLC_TS_INVALID )
503 msg_Err( p_dec, "more than 5 seconds of late video -> "
504 "dropping frame (computer too slow ?)" );
505 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
507 block_Release( p_block );
508 p_sys->i_late_frames--;
512 /* A good idea could be to decode all I pictures and see for the other */
513 if( !p_dec->b_pace_control &&
515 (p_sys->i_late_frames > 4) )
518 if( p_sys->i_late_frames < 12 )
520 p_context->skip_frame =
521 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
522 AVDISCARD_NONREF : p_sys->i_skip_frame;
526 /* picture too late, won't decode
527 * but break picture until a new I, and for mpeg4 ...*/
528 p_sys->i_late_frames--; /* needed else it will never be decrease */
529 block_Release( p_block );
535 if( p_sys->b_hurry_up )
536 p_context->skip_frame = p_sys->i_skip_frame;
537 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
543 if( p_context->width <= 0 || p_context->height <= 0 )
545 if( p_sys->b_hurry_up )
546 p_context->skip_frame = p_sys->i_skip_frame;
549 else if( !b_drawpicture )
551 /* It creates broken picture
552 * FIXME either our parser or ffmpeg is broken */
554 if( p_sys->b_hurry_up )
555 p_context->skip_frame = __MAX( p_context->skip_frame,
561 * Do the actual decoding now */
563 /* Don't forget that ffmpeg requires a little more bytes
564 * that the real frame size */
565 if( p_block->i_buffer > 0 )
567 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
569 p_block = block_Realloc( p_block, 0,
570 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
573 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
575 memset( p_block->p_buffer + p_block->i_buffer, 0,
576 FF_INPUT_BUFFER_PADDING_SIZE );
579 while( p_block->i_buffer > 0 || p_sys->b_flush )
581 int i_used, b_gotpicture;
585 /* Set the PTS/DTS in the context reordered_opaque field */
586 if( p_block->i_pts > VLC_TS_INVALID )
587 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
588 else if( p_block->i_dts > VLC_TS_INVALID )
589 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
591 p_context->reordered_opaque = INT64_MIN;
592 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
594 /* Make sure we don't reuse the same timestamps twice */
596 p_block->i_dts = VLC_TS_INVALID;
600 av_init_packet( &pkt );
601 pkt.data = p_block->p_buffer;
602 pkt.size = p_block->i_buffer;
603 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
604 &b_gotpicture, &pkt );
606 if( b_null_size && !p_sys->b_flush &&
607 p_context->width > 0 && p_context->height > 0 )
609 /* Reparse it to not drop the I frame */
611 if( p_sys->b_hurry_up )
612 p_context->skip_frame = p_sys->i_skip_frame;
613 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
614 &b_gotpicture, &pkt );
619 p_sys->b_first_frame = true;
621 if( p_block->i_buffer <= 0 )
622 p_sys->b_flush = false;
627 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
629 block_Release( p_block );
632 else if( i_used > p_block->i_buffer ||
633 p_context->thread_count > 1 )
635 i_used = p_block->i_buffer;
639 p_block->i_buffer -= i_used;
640 p_block->p_buffer += i_used;
642 /* Nothing to display */
645 if( i_used == 0 ) break;
649 /* Sanity check (seems to be needed for some streams) */
650 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
652 p_sys->b_has_b_frames = true;
655 /* Compute the PTS */
656 mtime_t i_pts = VLC_TS_INVALID;
657 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
659 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
660 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
663 if( !p_context->has_b_frames ||
664 !p_sys->b_has_b_frames ||
665 !p_sys->p_ff_pic->reference ||
666 p_sys->i_pts <= VLC_TS_INVALID )
669 /* Guess what ? The rules are different for Real Video :( */
670 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
671 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
672 p_sys->b_has_b_frames )
674 i_pts = VLC_TS_INVALID;
675 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
683 if( i_pts <= VLC_TS_INVALID )
684 i_pts = p_sys->i_pts;
686 /* Interpolate the next PTS */
687 if( i_pts > VLC_TS_INVALID )
688 p_sys->i_pts = i_pts;
689 if( p_sys->i_pts > VLC_TS_INVALID )
691 /* interpolate the next PTS */
692 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
693 p_dec->fmt_in.video.i_frame_rate_base > 0 )
695 p_sys->i_pts += INT64_C(1000000) *
696 (2 + p_sys->p_ff_pic->repeat_pict) *
697 p_dec->fmt_in.video.i_frame_rate_base /
698 (2 * p_dec->fmt_in.video.i_frame_rate);
700 else if( p_context->time_base.den > 0 )
702 int i_tick = p_context->ticks_per_frame;
706 p_sys->i_pts += INT64_C(1000000) *
707 (2 + p_sys->p_ff_pic->repeat_pict) *
708 i_tick * p_context->time_base.num /
709 (2 * p_context->time_base.den);
713 /* Update frame late count (except when doing preroll) */
714 mtime_t i_display_date = 0;
715 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
716 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
718 if( i_display_date > 0 && i_display_date <= mdate() )
720 p_sys->i_late_frames++;
721 if( p_sys->i_late_frames == 1 )
722 p_sys->i_late_frames_start = mdate();
726 p_sys->i_late_frames = 0;
729 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
732 if( !p_sys->p_ff_pic->opaque )
734 /* Get a new picture */
735 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
738 block_Release( p_block );
742 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
744 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
748 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
749 decoder_LinkPicture( p_dec, p_pic );
752 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
754 /* Fetch again the aspect ratio in case it changed */
755 p_dec->fmt_out.video.i_sar_num
756 = p_context->sample_aspect_ratio.num;
757 p_dec->fmt_out.video.i_sar_den
758 = p_context->sample_aspect_ratio.den;
760 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
762 p_dec->fmt_out.video.i_sar_num = 1;
763 p_dec->fmt_out.video.i_sar_den = 1;
767 /* Send decoded frame to vout */
768 if( i_pts > VLC_TS_INVALID)
772 if( p_sys->b_first_frame )
774 /* Hack to force display of still pictures */
775 p_sys->b_first_frame = false;
776 p_pic->b_force = true;
779 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
780 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
781 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
783 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
784 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
785 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
786 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
787 p_pic->i_qstride * i_mb_h );
788 switch( p_sys->p_ff_pic->qscale_type )
790 case FF_QSCALE_TYPE_MPEG1:
791 p_pic->i_qtype = QTYPE_MPEG1;
793 case FF_QSCALE_TYPE_MPEG2:
794 p_pic->i_qtype = QTYPE_MPEG2;
796 case FF_QSCALE_TYPE_H264:
797 p_pic->i_qtype = QTYPE_H264;
805 decoder_DeletePicture( p_dec, p_pic );
809 block_Release( p_block );
813 /*****************************************************************************
814 * EndVideo: decoder destruction
815 *****************************************************************************
816 * This function is called when the thread ends after a successful
818 *****************************************************************************/
819 void EndVideoDec( decoder_t *p_dec )
821 decoder_sys_t *p_sys = p_dec->p_sys;
825 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
826 if( p_sys->p_context->codec )
827 avcodec_flush_buffers( p_sys->p_context );
831 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
835 vlc_va_Delete( p_sys->p_va );
838 vlc_sem_destroy( &p_sys->sem_mt );
841 /*****************************************************************************
842 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
843 *****************************************************************************/
844 static void ffmpeg_InitCodec( decoder_t *p_dec )
846 decoder_sys_t *p_sys = p_dec->p_sys;
847 int i_size = p_dec->fmt_in.i_extra;
849 if( !i_size ) return;
851 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
855 p_sys->p_context->extradata_size = i_size + 12;
856 p = p_sys->p_context->extradata =
857 malloc( p_sys->p_context->extradata_size );
861 memcpy( &p[0], "SVQ3", 4 );
862 memset( &p[4], 0, 8 );
863 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
865 /* Now remove all atoms before the SMI one */
866 if( p_sys->p_context->extradata_size > 0x5a &&
867 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
869 uint8_t *psz = &p[0x52];
871 while( psz < &p[p_sys->p_context->extradata_size - 8] )
873 int i_size = GetDWBE( psz );
876 /* FIXME handle 1 as long size */
879 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
881 memmove( &p[0x52], psz,
882 &p[p_sys->p_context->extradata_size] - psz );
892 p_sys->p_context->extradata_size = i_size;
893 p_sys->p_context->extradata =
894 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
895 if( p_sys->p_context->extradata )
897 memcpy( p_sys->p_context->extradata,
898 p_dec->fmt_in.p_extra, i_size );
899 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
900 0, FF_INPUT_BUFFER_PADDING_SIZE );
905 /*****************************************************************************
906 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
907 * picture_t structure (when not in direct rendering mode).
908 *****************************************************************************/
909 static void ffmpeg_CopyPicture( decoder_t *p_dec,
910 picture_t *p_pic, AVFrame *p_ff_pic )
912 decoder_sys_t *p_sys = p_dec->p_sys;
916 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
918 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
920 int i_plane, i_size, i_line;
921 uint8_t *p_dst, *p_src;
922 int i_src_stride, i_dst_stride;
924 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
926 p_src = p_ff_pic->data[i_plane];
927 p_dst = p_pic->p[i_plane].p_pixels;
928 i_src_stride = p_ff_pic->linesize[i_plane];
929 i_dst_stride = p_pic->p[i_plane].i_pitch;
931 i_size = __MIN( i_src_stride, i_dst_stride );
932 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
935 vlc_memcpy( p_dst, p_src, i_size );
936 p_src += i_src_stride;
937 p_dst += i_dst_stride;
943 msg_Err( p_dec, "don't know how to convert chroma %i",
944 p_sys->p_context->pix_fmt );
949 /*****************************************************************************
950 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
951 *****************************************************************************
952 * It is used for direct rendering as well as to get the right PTS for each
953 * decoded picture (even in indirect rendering mode).
954 *****************************************************************************/
955 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
958 decoder_t *p_dec = (decoder_t *)p_context->opaque;
959 decoder_sys_t *p_sys = p_dec->p_sys;
963 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
964 p_ff_pic->opaque = NULL;
968 #ifdef HAVE_AVCODEC_VA
969 /* hwaccel_context is not present in old ffmpeg version */
970 if( vlc_va_Setup( p_sys->p_va,
971 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
972 p_context->width, p_context->height ) )
974 msg_Err( p_dec, "vlc_va_Setup failed" );
982 p_ff_pic->type = FF_BUFFER_TYPE_USER;
983 /* FIXME what is that, should give good value */
984 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
986 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
988 msg_Err( p_dec, "VaGrabSurface failed" );
993 else if( !p_sys->b_direct_rendering )
995 /* Not much to do in indirect rendering mode. */
996 return avcodec_default_get_buffer( p_context, p_ff_pic );
1000 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1001 * so we need to check for direct rendering again. */
1003 int i_width = p_context->width;
1004 int i_height = p_context->height;
1005 avcodec_align_dimensions( p_context, &i_width, &i_height );
1007 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1008 p_context->pix_fmt == PIX_FMT_PAL8 )
1011 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1013 /* Get a new picture */
1014 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1017 bool b_compatible = true;
1018 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1019 p_pic->p[0].i_lines < i_height )
1020 b_compatible = false;
1021 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1024 switch( p_sys->i_codec_id )
1034 i_align = i == 0 ? 16 : 8;
1037 if( p_pic->p[i].i_pitch % i_align )
1038 b_compatible = false;
1039 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1040 b_compatible = false;
1042 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1044 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1045 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1046 b_compatible = false;
1050 decoder_DeletePicture( p_dec, p_pic );
1054 if( p_sys->i_direct_rendering_used != 1 )
1056 msg_Dbg( p_dec, "using direct rendering" );
1057 p_sys->i_direct_rendering_used = 1;
1060 p_context->draw_horiz_band = NULL;
1062 p_ff_pic->opaque = (void*)p_pic;
1063 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1064 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1065 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1066 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1067 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1069 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1070 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1071 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1072 p_ff_pic->linesize[3] = 0;
1074 /* FIXME what is that, should give good value */
1075 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1081 if( p_sys->i_direct_rendering_used != 0 )
1083 msg_Warn( p_dec, "disabling direct rendering" );
1084 p_sys->i_direct_rendering_used = 0;
1087 return avcodec_default_get_buffer( p_context, p_ff_pic );
1089 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1091 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1093 /* We always use default reget function, it works perfectly fine */
1094 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1097 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1100 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1101 decoder_sys_t *p_sys = p_dec->p_sys;
1105 vlc_va_Release( p_sys->p_va, p_ff_pic );
1107 else if( !p_ff_pic->opaque )
1109 /* We can end up here without the AVFrame being allocated by
1110 * avcodec_default_get_buffer() if VA is used and the frame is
1111 * released when the decoder is closed
1113 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1114 avcodec_default_release_buffer( p_context, p_ff_pic );
1118 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1120 decoder_UnlinkPicture( p_dec, p_pic );
1122 for( int i = 0; i < 4; i++ )
1123 p_ff_pic->data[i] = NULL;
1126 #ifdef HAVE_AVCODEC_VA
1127 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1128 const enum PixelFormat *pi_fmt )
1130 decoder_t *p_dec = p_context->opaque;
1131 decoder_sys_t *p_sys = p_dec->p_sys;
1135 vlc_va_Delete( p_sys->p_va );
1139 /* Try too look for a supported hw acceleration */
1140 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1142 static const char *ppsz_name[PIX_FMT_NB] = {
1143 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1144 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1145 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1146 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1147 #ifdef HAVE_AVCODEC_DXVA2
1148 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1150 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1151 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1153 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1155 /* Only VLD supported */
1156 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1158 if( !var_InheritBool( p_dec, "xlib" ) )
1160 msg_Warn( p_dec, "Ignoring VA API" );
1163 #ifdef HAVE_AVCODEC_VAAPI
1164 msg_Dbg( p_dec, "Trying VA API" );
1165 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1167 msg_Warn( p_dec, "Failed to open VA API" );
1172 #ifdef HAVE_AVCODEC_DXVA2
1173 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1175 msg_Dbg( p_dec, "Trying DXVA2" );
1176 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1178 msg_Warn( p_dec, "Failed to open DXVA2" );
1183 p_context->width > 0 && p_context->height > 0 )
1185 /* We try to call vlc_va_Setup when possible to detect errors when
1186 * possible (later is too late) */
1187 if( vlc_va_Setup( p_sys->p_va,
1188 &p_context->hwaccel_context,
1189 &p_dec->fmt_out.video.i_chroma,
1190 p_context->width, p_context->height ) )
1192 msg_Err( p_dec, "vlc_va_Setup failed" );
1193 vlc_va_Delete( p_sys->p_va );
1200 if( p_sys->p_va->description )
1201 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1203 /* FIXME this will disabled direct rendering
1204 * even if a new pixel format is renegociated
1206 p_sys->b_direct_rendering = false;
1207 p_context->draw_horiz_band = NULL;
1212 /* Fallback to default behaviour */
1213 return avcodec_default_get_format( p_context, pi_fmt );