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 )
347 i_thread_count = vlc_GetCPUCount();
348 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
349 p_sys->p_context->thread_count = i_thread_count;
352 #ifdef HAVE_AVCODEC_VA
353 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
355 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
356 i_codec_id == CODEC_ID_MPEG4 ||
357 i_codec_id == CODEC_ID_H264 ||
358 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
360 #ifdef HAVE_AVCODEC_MT
361 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
363 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
364 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
367 p_sys->p_context->get_format = ffmpeg_GetFormat;
371 /* ***** misc init ***** */
372 p_sys->i_pts = VLC_TS_INVALID;
373 p_sys->b_has_b_frames = false;
374 p_sys->b_first_frame = true;
375 p_sys->b_flush = false;
376 p_sys->i_late_frames = 0;
378 /* Set output properties */
379 p_dec->fmt_out.i_cat = VIDEO_ES;
380 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
382 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
383 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
385 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
388 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
389 if( p_dec->fmt_in.video.p_palette )
391 p_sys->palette.palette_changed = 1;
393 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
399 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
400 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
401 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
402 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
404 p_sys->palette.palette[i] = c.u;
406 p_sys->p_context->palctrl = &p_sys->palette;
408 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
409 if( p_dec->fmt_out.video.p_palette )
410 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
412 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
414 p_sys->p_context->palctrl = &p_sys->palette;
417 /* ***** init this codec with special data ***** */
418 ffmpeg_InitCodec( p_dec );
420 /* ***** Open the codec ***** */
421 if( ffmpeg_OpenCodec( p_dec ) < 0 )
423 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
424 av_free( p_sys->p_ff_pic );
425 vlc_sem_destroy( &p_sys->sem_mt );
433 /*****************************************************************************
434 * DecodeVideo: Called to decode one or more frames
435 *****************************************************************************/
436 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
438 decoder_sys_t *p_sys = p_dec->p_sys;
439 AVCodecContext *p_context = p_sys->p_context;
441 int b_null_size = false;
444 if( !pp_block || !*pp_block )
447 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
449 ffmpeg_InitCodec( p_dec );
450 if( p_sys->b_delayed_open )
452 if( ffmpeg_OpenCodec( p_dec ) )
453 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
458 if( p_sys->b_delayed_open )
460 block_Release( p_block );
464 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
466 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
468 p_sys->i_late_frames = 0;
470 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
471 avcodec_flush_buffers( p_context );
473 block_Release( p_block );
477 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
479 /* Do not care about late frames when prerolling
480 * TODO avoid decoding of non reference frame
481 * (ie all B except for H264 where it depends only on nal_ref_idc) */
482 p_sys->i_late_frames = 0;
485 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
486 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
488 if( p_sys->i_pts > VLC_TS_INVALID )
490 msg_Err( p_dec, "more than 5 seconds of late video -> "
491 "dropping frame (computer too slow ?)" );
492 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
494 block_Release( p_block );
495 p_sys->i_late_frames--;
499 /* A good idea could be to decode all I pictures and see for the other */
500 if( !p_dec->b_pace_control &&
502 (p_sys->i_late_frames > 4) )
505 if( p_sys->i_late_frames < 12 )
507 p_context->skip_frame =
508 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
509 AVDISCARD_NONREF : p_sys->i_skip_frame;
513 /* picture too late, won't decode
514 * but break picture until a new I, and for mpeg4 ...*/
515 p_sys->i_late_frames--; /* needed else it will never be decrease */
516 block_Release( p_block );
522 if( p_sys->b_hurry_up )
523 p_context->skip_frame = p_sys->i_skip_frame;
524 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
530 if( p_context->width <= 0 || p_context->height <= 0 )
532 if( p_sys->b_hurry_up )
533 p_context->skip_frame = p_sys->i_skip_frame;
536 else if( !b_drawpicture )
538 /* It creates broken picture
539 * FIXME either our parser or ffmpeg is broken */
541 if( p_sys->b_hurry_up )
542 p_context->skip_frame = __MAX( p_context->skip_frame,
548 * Do the actual decoding now */
550 /* Don't forget that ffmpeg requires a little more bytes
551 * that the real frame size */
552 if( p_block->i_buffer > 0 )
554 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
556 p_block = block_Realloc( p_block, 0,
557 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
560 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
562 memset( p_block->p_buffer + p_block->i_buffer, 0,
563 FF_INPUT_BUFFER_PADDING_SIZE );
566 while( p_block->i_buffer > 0 || p_sys->b_flush )
568 int i_used, b_gotpicture;
572 /* Set the PTS/DTS in the context reordered_opaque field */
573 if( p_block->i_pts > VLC_TS_INVALID )
574 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
575 else if( p_block->i_dts > VLC_TS_INVALID )
576 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
578 p_context->reordered_opaque = INT64_MIN;
579 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
581 /* Make sure we don't reuse the same timestamps twice */
583 p_block->i_dts = VLC_TS_INVALID;
587 av_init_packet( &pkt );
588 pkt.data = p_block->p_buffer;
589 pkt.size = p_block->i_buffer;
590 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
591 &b_gotpicture, &pkt );
593 if( b_null_size && !p_sys->b_flush &&
594 p_context->width > 0 && p_context->height > 0 )
596 /* Reparse it to not drop the I frame */
598 if( p_sys->b_hurry_up )
599 p_context->skip_frame = p_sys->i_skip_frame;
600 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
601 &b_gotpicture, &pkt );
606 p_sys->b_first_frame = true;
608 if( p_block->i_buffer <= 0 )
609 p_sys->b_flush = false;
614 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
616 block_Release( p_block );
619 else if( i_used > p_block->i_buffer ||
620 p_context->thread_count > 1 )
622 i_used = p_block->i_buffer;
626 p_block->i_buffer -= i_used;
627 p_block->p_buffer += i_used;
629 /* Nothing to display */
632 if( i_used == 0 ) break;
636 /* Sanity check (seems to be needed for some streams) */
637 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
639 p_sys->b_has_b_frames = true;
642 /* Compute the PTS */
643 mtime_t i_pts = VLC_TS_INVALID;
644 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
646 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
647 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
650 if( !p_context->has_b_frames ||
651 !p_sys->b_has_b_frames ||
652 !p_sys->p_ff_pic->reference ||
653 p_sys->i_pts <= VLC_TS_INVALID )
656 /* Guess what ? The rules are different for Real Video :( */
657 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
658 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
659 p_sys->b_has_b_frames )
661 i_pts = VLC_TS_INVALID;
662 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
670 if( i_pts <= VLC_TS_INVALID )
671 i_pts = p_sys->i_pts;
673 /* Interpolate the next PTS */
674 if( i_pts > VLC_TS_INVALID )
675 p_sys->i_pts = i_pts;
676 if( p_sys->i_pts > VLC_TS_INVALID )
678 /* interpolate the next PTS */
679 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
680 p_dec->fmt_in.video.i_frame_rate_base > 0 )
682 p_sys->i_pts += INT64_C(1000000) *
683 (2 + p_sys->p_ff_pic->repeat_pict) *
684 p_dec->fmt_in.video.i_frame_rate_base /
685 (2 * p_dec->fmt_in.video.i_frame_rate);
687 else if( p_context->time_base.den > 0 )
689 int i_tick = p_context->ticks_per_frame;
693 p_sys->i_pts += INT64_C(1000000) *
694 (2 + p_sys->p_ff_pic->repeat_pict) *
695 i_tick * p_context->time_base.num /
696 (2 * p_context->time_base.den);
700 /* Update frame late count (except when doing preroll) */
701 mtime_t i_display_date = 0;
702 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
703 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
705 if( i_display_date > 0 && i_display_date <= mdate() )
707 p_sys->i_late_frames++;
708 if( p_sys->i_late_frames == 1 )
709 p_sys->i_late_frames_start = mdate();
713 p_sys->i_late_frames = 0;
716 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
719 if( !p_sys->p_ff_pic->opaque )
721 /* Get a new picture */
722 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
725 block_Release( p_block );
729 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
731 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
735 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
736 decoder_LinkPicture( p_dec, p_pic );
739 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
741 /* Fetch again the aspect ratio in case it changed */
742 p_dec->fmt_out.video.i_sar_num
743 = p_context->sample_aspect_ratio.num;
744 p_dec->fmt_out.video.i_sar_den
745 = p_context->sample_aspect_ratio.den;
747 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
749 p_dec->fmt_out.video.i_sar_num = 1;
750 p_dec->fmt_out.video.i_sar_den = 1;
754 /* Send decoded frame to vout */
755 if( i_pts > VLC_TS_INVALID)
759 if( p_sys->b_first_frame )
761 /* Hack to force display of still pictures */
762 p_sys->b_first_frame = false;
763 p_pic->b_force = true;
766 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
767 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
768 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
770 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
771 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
772 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
773 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
774 p_pic->i_qstride * i_mb_h );
775 switch( p_sys->p_ff_pic->qscale_type )
777 case FF_QSCALE_TYPE_MPEG1:
778 p_pic->i_qtype = QTYPE_MPEG1;
780 case FF_QSCALE_TYPE_MPEG2:
781 p_pic->i_qtype = QTYPE_MPEG2;
783 case FF_QSCALE_TYPE_H264:
784 p_pic->i_qtype = QTYPE_H264;
792 decoder_DeletePicture( p_dec, p_pic );
796 block_Release( p_block );
800 /*****************************************************************************
801 * EndVideo: decoder destruction
802 *****************************************************************************
803 * This function is called when the thread ends after a successful
805 *****************************************************************************/
806 void EndVideoDec( decoder_t *p_dec )
808 decoder_sys_t *p_sys = p_dec->p_sys;
812 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
813 if( p_sys->p_context->codec )
814 avcodec_flush_buffers( p_sys->p_context );
818 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
822 vlc_va_Delete( p_sys->p_va );
825 vlc_sem_destroy( &p_sys->sem_mt );
828 /*****************************************************************************
829 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
830 *****************************************************************************/
831 static void ffmpeg_InitCodec( decoder_t *p_dec )
833 decoder_sys_t *p_sys = p_dec->p_sys;
834 int i_size = p_dec->fmt_in.i_extra;
836 if( !i_size ) return;
838 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
842 p_sys->p_context->extradata_size = i_size + 12;
843 p = p_sys->p_context->extradata =
844 malloc( p_sys->p_context->extradata_size );
848 memcpy( &p[0], "SVQ3", 4 );
849 memset( &p[4], 0, 8 );
850 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
852 /* Now remove all atoms before the SMI one */
853 if( p_sys->p_context->extradata_size > 0x5a &&
854 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
856 uint8_t *psz = &p[0x52];
858 while( psz < &p[p_sys->p_context->extradata_size - 8] )
860 int i_size = GetDWBE( psz );
863 /* FIXME handle 1 as long size */
866 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
868 memmove( &p[0x52], psz,
869 &p[p_sys->p_context->extradata_size] - psz );
879 p_sys->p_context->extradata_size = i_size;
880 p_sys->p_context->extradata =
881 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
882 if( p_sys->p_context->extradata )
884 memcpy( p_sys->p_context->extradata,
885 p_dec->fmt_in.p_extra, i_size );
886 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
887 0, FF_INPUT_BUFFER_PADDING_SIZE );
892 /*****************************************************************************
893 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
894 * picture_t structure (when not in direct rendering mode).
895 *****************************************************************************/
896 static void ffmpeg_CopyPicture( decoder_t *p_dec,
897 picture_t *p_pic, AVFrame *p_ff_pic )
899 decoder_sys_t *p_sys = p_dec->p_sys;
903 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
905 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
907 int i_plane, i_size, i_line;
908 uint8_t *p_dst, *p_src;
909 int i_src_stride, i_dst_stride;
911 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
913 p_src = p_ff_pic->data[i_plane];
914 p_dst = p_pic->p[i_plane].p_pixels;
915 i_src_stride = p_ff_pic->linesize[i_plane];
916 i_dst_stride = p_pic->p[i_plane].i_pitch;
918 i_size = __MIN( i_src_stride, i_dst_stride );
919 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
922 vlc_memcpy( p_dst, p_src, i_size );
923 p_src += i_src_stride;
924 p_dst += i_dst_stride;
930 msg_Err( p_dec, "don't know how to convert chroma %i",
931 p_sys->p_context->pix_fmt );
936 /*****************************************************************************
937 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
938 *****************************************************************************
939 * It is used for direct rendering as well as to get the right PTS for each
940 * decoded picture (even in indirect rendering mode).
941 *****************************************************************************/
942 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
945 decoder_t *p_dec = (decoder_t *)p_context->opaque;
946 decoder_sys_t *p_sys = p_dec->p_sys;
950 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
951 p_ff_pic->opaque = NULL;
955 #ifdef HAVE_AVCODEC_VA
956 /* hwaccel_context is not present in old ffmpeg version */
957 if( vlc_va_Setup( p_sys->p_va,
958 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
959 p_context->width, p_context->height ) )
961 msg_Err( p_dec, "vlc_va_Setup failed" );
969 p_ff_pic->type = FF_BUFFER_TYPE_USER;
970 /* FIXME what is that, should give good value */
971 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
973 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
975 msg_Err( p_dec, "VaGrabSurface failed" );
980 else if( !p_sys->b_direct_rendering )
982 /* Not much to do in indirect rendering mode. */
983 return avcodec_default_get_buffer( p_context, p_ff_pic );
987 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
988 * so we need to check for direct rendering again. */
990 int i_width = p_context->width;
991 int i_height = p_context->height;
992 avcodec_align_dimensions( p_context, &i_width, &i_height );
994 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
995 p_context->pix_fmt == PIX_FMT_PAL8 )
998 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1000 /* Get a new picture */
1001 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1004 bool b_compatible = true;
1005 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1006 p_pic->p[0].i_lines < i_height )
1007 b_compatible = false;
1008 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1011 switch( p_sys->i_codec_id )
1021 i_align = i == 0 ? 16 : 8;
1024 if( p_pic->p[i].i_pitch % i_align )
1025 b_compatible = false;
1026 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1027 b_compatible = false;
1029 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1031 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1032 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1033 b_compatible = false;
1037 decoder_DeletePicture( p_dec, p_pic );
1041 if( p_sys->i_direct_rendering_used != 1 )
1043 msg_Dbg( p_dec, "using direct rendering" );
1044 p_sys->i_direct_rendering_used = 1;
1047 p_context->draw_horiz_band = NULL;
1049 p_ff_pic->opaque = (void*)p_pic;
1050 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1051 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1052 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1053 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1054 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1056 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1057 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1058 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1059 p_ff_pic->linesize[3] = 0;
1061 /* FIXME what is that, should give good value */
1062 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1068 if( p_sys->i_direct_rendering_used != 0 )
1070 msg_Warn( p_dec, "disabling direct rendering" );
1071 p_sys->i_direct_rendering_used = 0;
1074 return avcodec_default_get_buffer( p_context, p_ff_pic );
1076 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1078 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1080 /* We always use default reget function, it works perfectly fine */
1081 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1084 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1087 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1088 decoder_sys_t *p_sys = p_dec->p_sys;
1092 vlc_va_Release( p_sys->p_va, p_ff_pic );
1094 else if( !p_ff_pic->opaque )
1096 /* We can end up here without the AVFrame being allocated by
1097 * avcodec_default_get_buffer() if VA is used and the frame is
1098 * released when the decoder is closed
1100 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1101 avcodec_default_release_buffer( p_context, p_ff_pic );
1105 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1107 decoder_UnlinkPicture( p_dec, p_pic );
1109 for( int i = 0; i < 4; i++ )
1110 p_ff_pic->data[i] = NULL;
1113 #ifdef HAVE_AVCODEC_VA
1114 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1115 const enum PixelFormat *pi_fmt )
1117 decoder_t *p_dec = p_context->opaque;
1118 decoder_sys_t *p_sys = p_dec->p_sys;
1122 vlc_va_Delete( p_sys->p_va );
1126 /* Try too look for a supported hw acceleration */
1127 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1129 static const char *ppsz_name[PIX_FMT_NB] = {
1130 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1131 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1132 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1133 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1134 #ifdef HAVE_AVCODEC_DXVA2
1135 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1137 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1138 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1140 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1142 /* Only VLD supported */
1143 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1145 if( !var_InheritBool( p_dec, "xlib" ) )
1147 msg_Warn( p_dec, "Ignoring VA API" );
1150 #ifdef HAVE_AVCODEC_VAAPI
1151 msg_Dbg( p_dec, "Trying VA API" );
1152 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1154 msg_Warn( p_dec, "Failed to open VA API" );
1159 #ifdef HAVE_AVCODEC_DXVA2
1160 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1162 msg_Dbg( p_dec, "Trying DXVA2" );
1163 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1165 msg_Warn( p_dec, "Failed to open DXVA2" );
1170 p_context->width > 0 && p_context->height > 0 )
1172 /* We try to call vlc_va_Setup when possible to detect errors when
1173 * possible (later is too late) */
1174 if( vlc_va_Setup( p_sys->p_va,
1175 &p_context->hwaccel_context,
1176 &p_dec->fmt_out.video.i_chroma,
1177 p_context->width, p_context->height ) )
1179 msg_Err( p_dec, "vlc_va_Setup failed" );
1180 vlc_va_Delete( p_sys->p_va );
1187 if( p_sys->p_va->description )
1188 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1190 /* FIXME this will disabled direct rendering
1191 * even if a new pixel format is renegociated
1193 p_sys->b_direct_rendering = false;
1194 p_context->draw_horiz_band = NULL;
1199 /* Fallback to default behaviour */
1200 return avcodec_default_get_format( p_context, pi_fmt );