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;
151 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 66, 0 )
152 if (p_sys->b_direct_rendering)
153 edge = avcodec_get_edge_width();
156 p_dec->fmt_out.video.i_width = p_context->width + edge;
157 p_dec->fmt_out.video.i_height = p_context->height + edge;
159 if( !p_context->width || !p_context->height )
161 return NULL; /* invalid display size */
164 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
166 /* we are doomed, but not really, because most codecs set their pix_fmt
168 * FIXME does it make sense here ? */
169 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
171 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
173 /* If an aspect-ratio was specified in the input format then force it */
174 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
176 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
177 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
181 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
182 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
184 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
186 p_dec->fmt_out.video.i_sar_num = 1;
187 p_dec->fmt_out.video.i_sar_den = 1;
191 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
192 p_dec->fmt_in.video.i_frame_rate_base > 0 )
194 p_dec->fmt_out.video.i_frame_rate =
195 p_dec->fmt_in.video.i_frame_rate;
196 p_dec->fmt_out.video.i_frame_rate_base =
197 p_dec->fmt_in.video.i_frame_rate_base;
199 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
201 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
202 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
205 return decoder_NewPicture( p_dec );
208 /*****************************************************************************
209 * InitVideo: initialize the video decoder
210 *****************************************************************************
211 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
212 * opened (done after the first decoded frame).
213 *****************************************************************************/
214 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
215 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
217 decoder_sys_t *p_sys;
220 /* Allocate the memory needed to store the decoder's structure */
221 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
224 p_codec->type = AVMEDIA_TYPE_VIDEO;
225 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
226 p_context->codec_id = i_codec_id;
227 p_sys->p_context = p_context;
228 p_sys->p_codec = p_codec;
229 p_sys->i_codec_id = i_codec_id;
230 p_sys->psz_namecodec = psz_namecodec;
231 p_sys->p_ff_pic = avcodec_alloc_frame();
232 p_sys->b_delayed_open = true;
234 vlc_sem_init( &p_sys->sem_mt, 0 );
236 /* ***** Fill p_context with init values ***** */
237 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
239 /* ***** Get configuration of ffmpeg plugin ***** */
240 p_sys->p_context->workaround_bugs =
241 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
242 p_sys->p_context->error_recognition =
243 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
245 if( var_CreateGetBool( p_dec, "grayscale" ) )
246 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
248 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
249 if( i_val ) p_sys->p_context->debug_mv = i_val;
251 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
252 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
254 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
255 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
256 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
257 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
258 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
260 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
261 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
263 /* ***** ffmpeg frame skipping ***** */
264 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
266 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
269 p_sys->p_context->skip_frame = AVDISCARD_NONE;
272 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
275 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
278 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
281 p_sys->p_context->skip_frame = AVDISCARD_ALL;
284 p_sys->p_context->skip_frame = AVDISCARD_NONE;
287 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
289 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
292 p_sys->p_context->skip_idct = AVDISCARD_NONE;
295 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
298 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
301 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
304 p_sys->p_context->skip_idct = AVDISCARD_ALL;
307 p_sys->p_context->skip_idct = AVDISCARD_NONE;
310 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
312 /* ***** ffmpeg direct rendering ***** */
313 p_sys->b_direct_rendering = false;
314 p_sys->i_direct_rendering_used = -1;
315 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
316 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
317 /* No idea why ... but this fixes flickering on some TSCC streams */
318 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
319 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 53, 15, 0 )
320 p_sys->i_codec_id != CODEC_ID_PRORES &&
322 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
323 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
324 don't have idea howto implement fallback to libvpx decoder */
325 p_sys->i_codec_id != CODEC_ID_VP8 &&
327 !p_sys->p_context->debug_mv )
329 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
330 * so we need to do another check in ffmpeg_GetFrameBuf() */
331 p_sys->b_direct_rendering = true;
334 /* ffmpeg doesn't properly release old pictures when frames are skipped */
335 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
336 if( p_sys->b_direct_rendering )
338 msg_Dbg( p_dec, "trying to use direct rendering" );
339 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
343 msg_Dbg( p_dec, "direct rendering is disabled" );
346 /* Always use our get_buffer wrapper so we can calculate the
348 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
349 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
350 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
351 p_sys->p_context->opaque = p_dec;
353 #ifdef HAVE_AVCODEC_MT
354 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
355 if( i_thread_count <= 0 )
356 i_thread_count = vlc_GetCPUCount();
357 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
358 p_sys->p_context->thread_count = i_thread_count;
361 #ifdef HAVE_AVCODEC_VA
362 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
364 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
365 i_codec_id == CODEC_ID_MPEG4 ||
366 i_codec_id == CODEC_ID_H264 ||
367 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
369 #ifdef HAVE_AVCODEC_MT
370 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
372 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
373 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
376 p_sys->p_context->get_format = ffmpeg_GetFormat;
380 /* ***** misc init ***** */
381 p_sys->i_pts = VLC_TS_INVALID;
382 p_sys->b_has_b_frames = false;
383 p_sys->b_first_frame = true;
384 p_sys->b_flush = false;
385 p_sys->i_late_frames = 0;
387 /* Set output properties */
388 p_dec->fmt_out.i_cat = VIDEO_ES;
389 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
391 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
392 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
394 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
397 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
398 if( p_dec->fmt_in.video.p_palette )
400 p_sys->palette.palette_changed = 1;
402 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
408 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
409 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
410 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
411 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
413 p_sys->palette.palette[i] = c.u;
415 p_sys->p_context->palctrl = &p_sys->palette;
417 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
418 if( p_dec->fmt_out.video.p_palette )
419 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
421 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
423 p_sys->p_context->palctrl = &p_sys->palette;
426 /* ***** init this codec with special data ***** */
427 ffmpeg_InitCodec( p_dec );
429 /* ***** Open the codec ***** */
430 if( ffmpeg_OpenCodec( p_dec ) < 0 )
432 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
433 av_free( p_sys->p_ff_pic );
434 vlc_sem_destroy( &p_sys->sem_mt );
442 /*****************************************************************************
443 * DecodeVideo: Called to decode one or more frames
444 *****************************************************************************/
445 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
447 decoder_sys_t *p_sys = p_dec->p_sys;
448 AVCodecContext *p_context = p_sys->p_context;
450 int b_null_size = false;
453 if( !pp_block || !*pp_block )
456 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
458 ffmpeg_InitCodec( p_dec );
459 if( p_sys->b_delayed_open )
461 if( ffmpeg_OpenCodec( p_dec ) )
462 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
467 if( p_sys->b_delayed_open )
469 block_Release( p_block );
473 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
475 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
477 p_sys->i_late_frames = 0;
479 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
480 avcodec_flush_buffers( p_context );
482 block_Release( p_block );
486 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
488 /* Do not care about late frames when prerolling
489 * TODO avoid decoding of non reference frame
490 * (ie all B except for H264 where it depends only on nal_ref_idc) */
491 p_sys->i_late_frames = 0;
494 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
495 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
497 if( p_sys->i_pts > VLC_TS_INVALID )
499 msg_Err( p_dec, "more than 5 seconds of late video -> "
500 "dropping frame (computer too slow ?)" );
501 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
503 block_Release( p_block );
504 p_sys->i_late_frames--;
508 /* A good idea could be to decode all I pictures and see for the other */
509 if( !p_dec->b_pace_control &&
511 (p_sys->i_late_frames > 4) )
514 if( p_sys->i_late_frames < 12 )
516 p_context->skip_frame =
517 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
518 AVDISCARD_NONREF : p_sys->i_skip_frame;
522 /* picture too late, won't decode
523 * but break picture until a new I, and for mpeg4 ...*/
524 p_sys->i_late_frames--; /* needed else it will never be decrease */
525 block_Release( p_block );
531 if( p_sys->b_hurry_up )
532 p_context->skip_frame = p_sys->i_skip_frame;
533 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
539 if( p_context->width <= 0 || p_context->height <= 0 )
541 if( p_sys->b_hurry_up )
542 p_context->skip_frame = p_sys->i_skip_frame;
545 else if( !b_drawpicture )
547 /* It creates broken picture
548 * FIXME either our parser or ffmpeg is broken */
550 if( p_sys->b_hurry_up )
551 p_context->skip_frame = __MAX( p_context->skip_frame,
557 * Do the actual decoding now */
559 /* Don't forget that ffmpeg requires a little more bytes
560 * that the real frame size */
561 if( p_block->i_buffer > 0 )
563 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
565 p_block = block_Realloc( p_block, 0,
566 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
569 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
571 memset( p_block->p_buffer + p_block->i_buffer, 0,
572 FF_INPUT_BUFFER_PADDING_SIZE );
575 while( p_block->i_buffer > 0 || p_sys->b_flush )
577 int i_used, b_gotpicture;
581 /* Set the PTS/DTS in the context reordered_opaque field */
582 if( p_block->i_pts > VLC_TS_INVALID )
583 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
584 else if( p_block->i_dts > VLC_TS_INVALID )
585 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
587 p_context->reordered_opaque = INT64_MIN;
588 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
590 /* Make sure we don't reuse the same timestamps twice */
592 p_block->i_dts = VLC_TS_INVALID;
596 av_init_packet( &pkt );
597 pkt.data = p_block->p_buffer;
598 pkt.size = p_block->i_buffer;
599 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
600 &b_gotpicture, &pkt );
602 if( b_null_size && !p_sys->b_flush &&
603 p_context->width > 0 && p_context->height > 0 )
605 /* Reparse it to not drop the I frame */
607 if( p_sys->b_hurry_up )
608 p_context->skip_frame = p_sys->i_skip_frame;
609 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
610 &b_gotpicture, &pkt );
615 p_sys->b_first_frame = true;
617 if( p_block->i_buffer <= 0 )
618 p_sys->b_flush = false;
623 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
625 block_Release( p_block );
628 else if( i_used > p_block->i_buffer ||
629 p_context->thread_count > 1 )
631 i_used = p_block->i_buffer;
635 p_block->i_buffer -= i_used;
636 p_block->p_buffer += i_used;
638 /* Nothing to display */
641 if( i_used == 0 ) break;
645 /* Sanity check (seems to be needed for some streams) */
646 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
648 p_sys->b_has_b_frames = true;
651 /* Compute the PTS */
652 mtime_t i_pts = VLC_TS_INVALID;
653 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
655 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
656 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
659 if( !p_context->has_b_frames ||
660 !p_sys->b_has_b_frames ||
661 !p_sys->p_ff_pic->reference ||
662 p_sys->i_pts <= VLC_TS_INVALID )
665 /* Guess what ? The rules are different for Real Video :( */
666 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
667 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
668 p_sys->b_has_b_frames )
670 i_pts = VLC_TS_INVALID;
671 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
679 if( i_pts <= VLC_TS_INVALID )
680 i_pts = p_sys->i_pts;
682 /* Interpolate the next PTS */
683 if( i_pts > VLC_TS_INVALID )
684 p_sys->i_pts = i_pts;
685 if( p_sys->i_pts > VLC_TS_INVALID )
687 /* interpolate the next PTS */
688 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
689 p_dec->fmt_in.video.i_frame_rate_base > 0 )
691 p_sys->i_pts += INT64_C(1000000) *
692 (2 + p_sys->p_ff_pic->repeat_pict) *
693 p_dec->fmt_in.video.i_frame_rate_base /
694 (2 * p_dec->fmt_in.video.i_frame_rate);
696 else if( p_context->time_base.den > 0 )
698 int i_tick = p_context->ticks_per_frame;
702 p_sys->i_pts += INT64_C(1000000) *
703 (2 + p_sys->p_ff_pic->repeat_pict) *
704 i_tick * p_context->time_base.num /
705 (2 * p_context->time_base.den);
709 /* Update frame late count (except when doing preroll) */
710 mtime_t i_display_date = 0;
711 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
712 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
714 if( i_display_date > 0 && i_display_date <= mdate() )
716 p_sys->i_late_frames++;
717 if( p_sys->i_late_frames == 1 )
718 p_sys->i_late_frames_start = mdate();
722 p_sys->i_late_frames = 0;
725 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
728 if( !p_sys->p_ff_pic->opaque )
730 /* Get a new picture */
731 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
734 block_Release( p_block );
738 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
740 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
744 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
745 decoder_LinkPicture( p_dec, p_pic );
748 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
750 /* Fetch again the aspect ratio in case it changed */
751 p_dec->fmt_out.video.i_sar_num
752 = p_context->sample_aspect_ratio.num;
753 p_dec->fmt_out.video.i_sar_den
754 = p_context->sample_aspect_ratio.den;
756 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
758 p_dec->fmt_out.video.i_sar_num = 1;
759 p_dec->fmt_out.video.i_sar_den = 1;
763 /* Send decoded frame to vout */
764 if( i_pts > VLC_TS_INVALID)
768 if( p_sys->b_first_frame )
770 /* Hack to force display of still pictures */
771 p_sys->b_first_frame = false;
772 p_pic->b_force = true;
775 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
776 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
777 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
779 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
780 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
781 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
782 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
783 p_pic->i_qstride * i_mb_h );
784 switch( p_sys->p_ff_pic->qscale_type )
786 case FF_QSCALE_TYPE_MPEG1:
787 p_pic->i_qtype = QTYPE_MPEG1;
789 case FF_QSCALE_TYPE_MPEG2:
790 p_pic->i_qtype = QTYPE_MPEG2;
792 case FF_QSCALE_TYPE_H264:
793 p_pic->i_qtype = QTYPE_H264;
801 decoder_DeletePicture( p_dec, p_pic );
805 block_Release( p_block );
809 /*****************************************************************************
810 * EndVideo: decoder destruction
811 *****************************************************************************
812 * This function is called when the thread ends after a successful
814 *****************************************************************************/
815 void EndVideoDec( decoder_t *p_dec )
817 decoder_sys_t *p_sys = p_dec->p_sys;
821 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
822 if( p_sys->p_context->codec )
823 avcodec_flush_buffers( p_sys->p_context );
827 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
831 vlc_va_Delete( p_sys->p_va );
834 vlc_sem_destroy( &p_sys->sem_mt );
837 /*****************************************************************************
838 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
839 *****************************************************************************/
840 static void ffmpeg_InitCodec( decoder_t *p_dec )
842 decoder_sys_t *p_sys = p_dec->p_sys;
843 int i_size = p_dec->fmt_in.i_extra;
845 if( !i_size ) return;
847 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
851 p_sys->p_context->extradata_size = i_size + 12;
852 p = p_sys->p_context->extradata =
853 malloc( p_sys->p_context->extradata_size );
857 memcpy( &p[0], "SVQ3", 4 );
858 memset( &p[4], 0, 8 );
859 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
861 /* Now remove all atoms before the SMI one */
862 if( p_sys->p_context->extradata_size > 0x5a &&
863 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
865 uint8_t *psz = &p[0x52];
867 while( psz < &p[p_sys->p_context->extradata_size - 8] )
869 int i_size = GetDWBE( psz );
872 /* FIXME handle 1 as long size */
875 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
877 memmove( &p[0x52], psz,
878 &p[p_sys->p_context->extradata_size] - psz );
888 p_sys->p_context->extradata_size = i_size;
889 p_sys->p_context->extradata =
890 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
891 if( p_sys->p_context->extradata )
893 memcpy( p_sys->p_context->extradata,
894 p_dec->fmt_in.p_extra, i_size );
895 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
896 0, FF_INPUT_BUFFER_PADDING_SIZE );
901 /*****************************************************************************
902 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
903 * picture_t structure (when not in direct rendering mode).
904 *****************************************************************************/
905 static void ffmpeg_CopyPicture( decoder_t *p_dec,
906 picture_t *p_pic, AVFrame *p_ff_pic )
908 decoder_sys_t *p_sys = p_dec->p_sys;
912 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
914 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
916 int i_plane, i_size, i_line;
917 uint8_t *p_dst, *p_src;
918 int i_src_stride, i_dst_stride;
920 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
922 p_src = p_ff_pic->data[i_plane];
923 p_dst = p_pic->p[i_plane].p_pixels;
924 i_src_stride = p_ff_pic->linesize[i_plane];
925 i_dst_stride = p_pic->p[i_plane].i_pitch;
927 i_size = __MIN( i_src_stride, i_dst_stride );
928 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
931 vlc_memcpy( p_dst, p_src, i_size );
932 p_src += i_src_stride;
933 p_dst += i_dst_stride;
939 msg_Err( p_dec, "don't know how to convert chroma %i",
940 p_sys->p_context->pix_fmt );
945 /*****************************************************************************
946 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
947 *****************************************************************************
948 * It is used for direct rendering as well as to get the right PTS for each
949 * decoded picture (even in indirect rendering mode).
950 *****************************************************************************/
951 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
954 decoder_t *p_dec = (decoder_t *)p_context->opaque;
955 decoder_sys_t *p_sys = p_dec->p_sys;
959 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
960 p_ff_pic->opaque = NULL;
964 #ifdef HAVE_AVCODEC_VA
965 /* hwaccel_context is not present in old ffmpeg version */
966 if( vlc_va_Setup( p_sys->p_va,
967 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
968 p_context->width, p_context->height ) )
970 msg_Err( p_dec, "vlc_va_Setup failed" );
978 p_ff_pic->type = FF_BUFFER_TYPE_USER;
979 /* FIXME what is that, should give good value */
980 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
982 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
984 msg_Err( p_dec, "VaGrabSurface failed" );
989 else if( !p_sys->b_direct_rendering )
991 /* Not much to do in indirect rendering mode. */
992 return avcodec_default_get_buffer( p_context, p_ff_pic );
996 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
997 * so we need to check for direct rendering again. */
999 int i_width = p_context->width;
1000 int i_height = p_context->height;
1001 avcodec_align_dimensions( p_context, &i_width, &i_height );
1003 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1004 p_context->pix_fmt == PIX_FMT_PAL8 )
1007 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1009 /* Get a new picture */
1010 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1013 bool b_compatible = true;
1014 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1015 p_pic->p[0].i_lines < i_height )
1016 b_compatible = false;
1017 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1020 switch( p_sys->i_codec_id )
1030 i_align = i == 0 ? 16 : 8;
1033 if( p_pic->p[i].i_pitch % i_align )
1034 b_compatible = false;
1035 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1036 b_compatible = false;
1038 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1040 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1041 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1042 b_compatible = false;
1046 decoder_DeletePicture( p_dec, p_pic );
1050 if( p_sys->i_direct_rendering_used != 1 )
1052 msg_Dbg( p_dec, "using direct rendering" );
1053 p_sys->i_direct_rendering_used = 1;
1056 p_context->draw_horiz_band = NULL;
1058 p_ff_pic->opaque = (void*)p_pic;
1059 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1060 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1061 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1062 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1063 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1065 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1066 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1067 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1068 p_ff_pic->linesize[3] = 0;
1070 /* FIXME what is that, should give good value */
1071 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1077 if( p_sys->i_direct_rendering_used != 0 )
1079 msg_Warn( p_dec, "disabling direct rendering" );
1080 p_sys->i_direct_rendering_used = 0;
1083 return avcodec_default_get_buffer( p_context, p_ff_pic );
1085 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1087 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1089 /* We always use default reget function, it works perfectly fine */
1090 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1093 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1096 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1097 decoder_sys_t *p_sys = p_dec->p_sys;
1101 vlc_va_Release( p_sys->p_va, p_ff_pic );
1103 else if( !p_ff_pic->opaque )
1105 /* We can end up here without the AVFrame being allocated by
1106 * avcodec_default_get_buffer() if VA is used and the frame is
1107 * released when the decoder is closed
1109 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1110 avcodec_default_release_buffer( p_context, p_ff_pic );
1114 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1116 decoder_UnlinkPicture( p_dec, p_pic );
1118 for( int i = 0; i < 4; i++ )
1119 p_ff_pic->data[i] = NULL;
1122 #ifdef HAVE_AVCODEC_VA
1123 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1124 const enum PixelFormat *pi_fmt )
1126 decoder_t *p_dec = p_context->opaque;
1127 decoder_sys_t *p_sys = p_dec->p_sys;
1131 vlc_va_Delete( p_sys->p_va );
1135 /* Try too look for a supported hw acceleration */
1136 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1138 static const char *ppsz_name[PIX_FMT_NB] = {
1139 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1140 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1141 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1142 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1143 #ifdef HAVE_AVCODEC_DXVA2
1144 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1146 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1147 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1149 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1151 /* Only VLD supported */
1152 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1154 if( !var_InheritBool( p_dec, "xlib" ) )
1156 msg_Warn( p_dec, "Ignoring VA API" );
1159 #ifdef HAVE_AVCODEC_VAAPI
1160 msg_Dbg( p_dec, "Trying VA API" );
1161 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1163 msg_Warn( p_dec, "Failed to open VA API" );
1168 #ifdef HAVE_AVCODEC_DXVA2
1169 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1171 msg_Dbg( p_dec, "Trying DXVA2" );
1172 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1174 msg_Warn( p_dec, "Failed to open DXVA2" );
1179 p_context->width > 0 && p_context->height > 0 )
1181 /* We try to call vlc_va_Setup when possible to detect errors when
1182 * possible (later is too late) */
1183 if( vlc_va_Setup( p_sys->p_va,
1184 &p_context->hwaccel_context,
1185 &p_dec->fmt_out.video.i_chroma,
1186 p_context->width, p_context->height ) )
1188 msg_Err( p_dec, "vlc_va_Setup failed" );
1189 vlc_va_Delete( p_sys->p_va );
1196 if( p_sys->p_va->description )
1197 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1199 /* FIXME this will disabled direct rendering
1200 * even if a new pixel format is renegociated
1202 p_sys->b_direct_rendering = false;
1203 p_context->draw_horiz_band = NULL;
1208 /* Fallback to default behaviour */
1209 return avcodec_default_get_format( p_context, pi_fmt );