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 */
99 #if LIBAVCODEC_VERSION_MAJOR < 54
100 AVPaletteControl palette;
114 #ifdef HAVE_AVCODEC_MT
115 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
116 # define post_mt(s) vlc_sem_post( &s->sem_mt )
122 /*****************************************************************************
124 *****************************************************************************/
125 static void ffmpeg_InitCodec ( decoder_t * );
126 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
127 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
128 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
129 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
131 #ifdef HAVE_AVCODEC_VA
132 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
133 const enum PixelFormat * );
136 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
138 uint8_t *p = (uint8_t*)&fcc;
139 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
142 /*****************************************************************************
144 *****************************************************************************/
146 /* Returns a new picture buffer */
147 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
148 AVCodecContext *p_context )
150 decoder_sys_t *p_sys = p_dec->p_sys;
152 p_dec->fmt_out.video.i_width = p_context->width;
153 p_dec->fmt_out.video.i_height = p_context->height;
155 if( !p_context->width || !p_context->height )
157 return NULL; /* invalid display size */
160 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
162 /* we are doomed, but not really, because most codecs set their pix_fmt
164 * FIXME does it make sense here ? */
165 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
167 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
169 /* If an aspect-ratio was specified in the input format then force it */
170 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
172 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
173 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
177 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
178 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
180 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
182 p_dec->fmt_out.video.i_sar_num = 1;
183 p_dec->fmt_out.video.i_sar_den = 1;
187 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
188 p_dec->fmt_in.video.i_frame_rate_base > 0 )
190 p_dec->fmt_out.video.i_frame_rate =
191 p_dec->fmt_in.video.i_frame_rate;
192 p_dec->fmt_out.video.i_frame_rate_base =
193 p_dec->fmt_in.video.i_frame_rate_base;
195 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
197 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
198 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
201 return decoder_NewPicture( p_dec );
204 /*****************************************************************************
205 * InitVideo: initialize the video decoder
206 *****************************************************************************
207 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
208 * opened (done after the first decoded frame).
209 *****************************************************************************/
210 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
211 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
213 decoder_sys_t *p_sys;
216 /* Allocate the memory needed to store the decoder's structure */
217 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
220 p_codec->type = AVMEDIA_TYPE_VIDEO;
221 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
222 p_context->codec_id = i_codec_id;
223 p_sys->p_context = p_context;
224 p_sys->p_codec = p_codec;
225 p_sys->i_codec_id = i_codec_id;
226 p_sys->psz_namecodec = psz_namecodec;
227 p_sys->p_ff_pic = avcodec_alloc_frame();
228 p_sys->b_delayed_open = true;
230 vlc_sem_init( &p_sys->sem_mt, 0 );
232 /* ***** Fill p_context with init values ***** */
233 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
235 /* ***** Get configuration of ffmpeg plugin ***** */
236 p_sys->p_context->workaround_bugs =
237 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
238 #if LIBAVCODEC_VERSION_MAJOR < 54
239 p_sys->p_context->error_recognition =
241 p_sys->p_context->err_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 p_sys->i_codec_id != CODEC_ID_CINEPAK &&
320 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
321 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
322 don't have idea howto implement fallback to libvpx decoder */
323 p_sys->i_codec_id != CODEC_ID_VP8 &&
325 !p_sys->p_context->debug_mv )
327 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
328 * so we need to do another check in ffmpeg_GetFrameBuf() */
329 p_sys->b_direct_rendering = true;
332 /* ffmpeg doesn't properly release old pictures when frames are skipped */
333 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
334 if( p_sys->b_direct_rendering )
336 msg_Dbg( p_dec, "trying to use direct rendering" );
337 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
341 msg_Dbg( p_dec, "direct rendering is disabled" );
344 /* Always use our get_buffer wrapper so we can calculate the
346 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
347 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
348 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
349 p_sys->p_context->opaque = p_dec;
351 #ifdef HAVE_AVCODEC_MT
352 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
353 if( i_thread_count <= 0 )
355 i_thread_count = vlc_GetCPUCount();
356 if( i_thread_count > 1 )
359 //FIXME: take in count the decoding time
360 i_thread_count = __MIN( i_thread_count, 4 );
362 i_thread_count = __MIN( i_thread_count, 16 );
363 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
364 p_sys->p_context->thread_count = i_thread_count;
367 #ifdef HAVE_AVCODEC_VA
368 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
370 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
371 i_codec_id == CODEC_ID_MPEG4 ||
372 i_codec_id == CODEC_ID_H264 ||
373 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
375 #ifdef HAVE_AVCODEC_MT
376 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
378 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
379 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
381 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
382 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
384 msg_Warn( p_dec, "threaded slice decoding is not compatible with ffmpeg-hw, disabled" );
385 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
388 p_sys->p_context->get_format = ffmpeg_GetFormat;
391 #ifdef HAVE_AVCODEC_MT
392 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
393 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
397 /* ***** misc init ***** */
398 p_sys->i_pts = VLC_TS_INVALID;
399 p_sys->b_has_b_frames = false;
400 p_sys->b_first_frame = true;
401 p_sys->b_flush = false;
402 p_sys->i_late_frames = 0;
404 /* Set output properties */
405 p_dec->fmt_out.i_cat = VIDEO_ES;
406 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
408 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
409 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
411 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
413 #if LIBAVCODEC_VERSION_MAJOR < 54
415 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
416 if( p_dec->fmt_in.video.p_palette )
418 p_sys->palette.palette_changed = 1;
420 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
426 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
427 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
428 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
429 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
431 p_sys->palette.palette[i] = c.u;
433 p_sys->p_context->palctrl = &p_sys->palette;
435 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
436 if( p_dec->fmt_out.video.p_palette )
437 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
439 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
441 p_sys->p_context->palctrl = &p_sys->palette;
447 /* ***** init this codec with special data ***** */
448 ffmpeg_InitCodec( p_dec );
450 /* ***** Open the codec ***** */
451 if( ffmpeg_OpenCodec( p_dec ) < 0 )
453 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
454 av_free( p_sys->p_ff_pic );
455 vlc_sem_destroy( &p_sys->sem_mt );
463 /*****************************************************************************
464 * DecodeVideo: Called to decode one or more frames
465 *****************************************************************************/
466 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
468 decoder_sys_t *p_sys = p_dec->p_sys;
469 AVCodecContext *p_context = p_sys->p_context;
471 int b_null_size = false;
474 if( !pp_block || !*pp_block )
477 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
479 ffmpeg_InitCodec( p_dec );
480 if( p_sys->b_delayed_open )
482 if( ffmpeg_OpenCodec( p_dec ) )
483 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
488 if( p_sys->b_delayed_open )
490 block_Release( p_block );
494 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
496 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
498 p_sys->i_late_frames = 0;
500 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
501 avcodec_flush_buffers( p_context );
503 block_Release( p_block );
507 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
509 /* Do not care about late frames when prerolling
510 * TODO avoid decoding of non reference frame
511 * (ie all B except for H264 where it depends only on nal_ref_idc) */
512 p_sys->i_late_frames = 0;
515 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
516 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
518 if( p_sys->i_pts > VLC_TS_INVALID )
520 msg_Err( p_dec, "more than 5 seconds of late video -> "
521 "dropping frame (computer too slow ?)" );
522 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
524 block_Release( p_block );
525 p_sys->i_late_frames--;
529 /* A good idea could be to decode all I pictures and see for the other */
530 if( !p_dec->b_pace_control &&
532 (p_sys->i_late_frames > 4) )
535 if( p_sys->i_late_frames < 12 )
537 p_context->skip_frame =
538 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
539 AVDISCARD_NONREF : p_sys->i_skip_frame;
543 /* picture too late, won't decode
544 * but break picture until a new I, and for mpeg4 ...*/
545 p_sys->i_late_frames--; /* needed else it will never be decrease */
546 block_Release( p_block );
552 if( p_sys->b_hurry_up )
553 p_context->skip_frame = p_sys->i_skip_frame;
554 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
560 if( p_context->width <= 0 || p_context->height <= 0 )
562 if( p_sys->b_hurry_up )
563 p_context->skip_frame = p_sys->i_skip_frame;
566 else if( !b_drawpicture )
568 /* It creates broken picture
569 * FIXME either our parser or ffmpeg is broken */
571 if( p_sys->b_hurry_up )
572 p_context->skip_frame = __MAX( p_context->skip_frame,
578 * Do the actual decoding now */
580 /* Don't forget that ffmpeg requires a little more bytes
581 * that the real frame size */
582 if( p_block->i_buffer > 0 )
584 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
586 p_block = block_Realloc( p_block, 0,
587 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
590 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
592 memset( p_block->p_buffer + p_block->i_buffer, 0,
593 FF_INPUT_BUFFER_PADDING_SIZE );
596 while( p_block->i_buffer > 0 || p_sys->b_flush )
598 int i_used, b_gotpicture;
602 /* Set the PTS/DTS in the context reordered_opaque field */
603 if( p_block->i_pts > VLC_TS_INVALID )
604 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
605 else if( p_block->i_dts > VLC_TS_INVALID )
606 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
608 p_context->reordered_opaque = INT64_MIN;
609 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
611 /* Make sure we don't reuse the same timestamps twice */
613 p_block->i_dts = VLC_TS_INVALID;
617 av_init_packet( &pkt );
618 pkt.data = p_block->p_buffer;
619 pkt.size = p_block->i_buffer;
620 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
621 &b_gotpicture, &pkt );
623 if( b_null_size && !p_sys->b_flush &&
624 p_context->width > 0 && p_context->height > 0 )
626 /* Reparse it to not drop the I frame */
628 if( p_sys->b_hurry_up )
629 p_context->skip_frame = p_sys->i_skip_frame;
630 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
631 &b_gotpicture, &pkt );
636 p_sys->b_first_frame = true;
638 if( p_block->i_buffer <= 0 )
639 p_sys->b_flush = false;
644 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
646 block_Release( p_block );
649 else if( i_used > p_block->i_buffer ||
650 p_context->thread_count > 1 )
652 i_used = p_block->i_buffer;
656 p_block->i_buffer -= i_used;
657 p_block->p_buffer += i_used;
659 /* Nothing to display */
662 if( i_used == 0 ) break;
666 /* Sanity check (seems to be needed for some streams) */
667 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
669 p_sys->b_has_b_frames = true;
672 /* Compute the PTS */
673 mtime_t i_pts = VLC_TS_INVALID;
674 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
676 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
677 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
680 if( !p_context->has_b_frames ||
681 !p_sys->b_has_b_frames ||
682 !p_sys->p_ff_pic->reference ||
683 p_sys->i_pts <= VLC_TS_INVALID )
686 /* Guess what ? The rules are different for Real Video :( */
687 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
688 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
689 p_sys->b_has_b_frames )
691 i_pts = VLC_TS_INVALID;
692 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
700 if( i_pts <= VLC_TS_INVALID )
701 i_pts = p_sys->i_pts;
703 /* Interpolate the next PTS */
704 if( i_pts > VLC_TS_INVALID )
705 p_sys->i_pts = i_pts;
706 if( p_sys->i_pts > VLC_TS_INVALID )
708 /* interpolate the next PTS */
709 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
710 p_dec->fmt_in.video.i_frame_rate_base > 0 )
712 p_sys->i_pts += INT64_C(1000000) *
713 (2 + p_sys->p_ff_pic->repeat_pict) *
714 p_dec->fmt_in.video.i_frame_rate_base /
715 (2 * p_dec->fmt_in.video.i_frame_rate);
717 else if( p_context->time_base.den > 0 )
719 int i_tick = p_context->ticks_per_frame;
723 p_sys->i_pts += INT64_C(1000000) *
724 (2 + p_sys->p_ff_pic->repeat_pict) *
725 i_tick * p_context->time_base.num /
726 (2 * p_context->time_base.den);
730 /* Update frame late count (except when doing preroll) */
731 mtime_t i_display_date = 0;
732 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
733 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
735 if( i_display_date > 0 && i_display_date <= mdate() )
737 p_sys->i_late_frames++;
738 if( p_sys->i_late_frames == 1 )
739 p_sys->i_late_frames_start = mdate();
743 p_sys->i_late_frames = 0;
746 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
749 if( !p_sys->p_ff_pic->opaque )
751 /* Get a new picture */
752 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
755 block_Release( p_block );
759 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
761 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
765 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
766 decoder_LinkPicture( p_dec, p_pic );
769 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
771 /* Fetch again the aspect ratio in case it changed */
772 p_dec->fmt_out.video.i_sar_num
773 = p_context->sample_aspect_ratio.num;
774 p_dec->fmt_out.video.i_sar_den
775 = p_context->sample_aspect_ratio.den;
777 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
779 p_dec->fmt_out.video.i_sar_num = 1;
780 p_dec->fmt_out.video.i_sar_den = 1;
784 /* Send decoded frame to vout */
785 if( i_pts > VLC_TS_INVALID)
789 if( p_sys->b_first_frame )
791 /* Hack to force display of still pictures */
792 p_sys->b_first_frame = false;
793 p_pic->b_force = true;
796 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
797 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
798 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
800 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
801 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
802 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
803 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
804 p_pic->i_qstride * i_mb_h );
805 switch( p_sys->p_ff_pic->qscale_type )
807 case FF_QSCALE_TYPE_MPEG1:
808 p_pic->i_qtype = QTYPE_MPEG1;
810 case FF_QSCALE_TYPE_MPEG2:
811 p_pic->i_qtype = QTYPE_MPEG2;
813 case FF_QSCALE_TYPE_H264:
814 p_pic->i_qtype = QTYPE_H264;
822 decoder_DeletePicture( p_dec, p_pic );
826 block_Release( p_block );
830 /*****************************************************************************
831 * EndVideo: decoder destruction
832 *****************************************************************************
833 * This function is called when the thread ends after a successful
835 *****************************************************************************/
836 void EndVideoDec( decoder_t *p_dec )
838 decoder_sys_t *p_sys = p_dec->p_sys;
842 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
843 if( p_sys->p_context->codec )
844 avcodec_flush_buffers( p_sys->p_context );
848 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
852 vlc_va_Delete( p_sys->p_va );
855 vlc_sem_destroy( &p_sys->sem_mt );
858 /*****************************************************************************
859 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
860 *****************************************************************************/
861 static void ffmpeg_InitCodec( decoder_t *p_dec )
863 decoder_sys_t *p_sys = p_dec->p_sys;
864 int i_size = p_dec->fmt_in.i_extra;
866 if( !i_size ) return;
868 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
872 p_sys->p_context->extradata_size = i_size + 12;
873 p = p_sys->p_context->extradata =
874 malloc( p_sys->p_context->extradata_size );
878 memcpy( &p[0], "SVQ3", 4 );
879 memset( &p[4], 0, 8 );
880 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
882 /* Now remove all atoms before the SMI one */
883 if( p_sys->p_context->extradata_size > 0x5a &&
884 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
886 uint8_t *psz = &p[0x52];
888 while( psz < &p[p_sys->p_context->extradata_size - 8] )
890 int i_size = GetDWBE( psz );
893 /* FIXME handle 1 as long size */
896 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
898 memmove( &p[0x52], psz,
899 &p[p_sys->p_context->extradata_size] - psz );
909 p_sys->p_context->extradata_size = i_size;
910 p_sys->p_context->extradata =
911 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
912 if( p_sys->p_context->extradata )
914 memcpy( p_sys->p_context->extradata,
915 p_dec->fmt_in.p_extra, i_size );
916 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
917 0, FF_INPUT_BUFFER_PADDING_SIZE );
922 /*****************************************************************************
923 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
924 * picture_t structure (when not in direct rendering mode).
925 *****************************************************************************/
926 static void ffmpeg_CopyPicture( decoder_t *p_dec,
927 picture_t *p_pic, AVFrame *p_ff_pic )
929 decoder_sys_t *p_sys = p_dec->p_sys;
933 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
935 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
937 int i_plane, i_size, i_line;
938 uint8_t *p_dst, *p_src;
939 int i_src_stride, i_dst_stride;
941 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
943 p_src = p_ff_pic->data[i_plane];
944 p_dst = p_pic->p[i_plane].p_pixels;
945 i_src_stride = p_ff_pic->linesize[i_plane];
946 i_dst_stride = p_pic->p[i_plane].i_pitch;
948 i_size = __MIN( i_src_stride, i_dst_stride );
949 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
952 vlc_memcpy( p_dst, p_src, i_size );
953 p_src += i_src_stride;
954 p_dst += i_dst_stride;
960 msg_Err( p_dec, "don't know how to convert chroma %i",
961 p_sys->p_context->pix_fmt );
966 /*****************************************************************************
967 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
968 *****************************************************************************
969 * It is used for direct rendering as well as to get the right PTS for each
970 * decoded picture (even in indirect rendering mode).
971 *****************************************************************************/
972 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
975 decoder_t *p_dec = (decoder_t *)p_context->opaque;
976 decoder_sys_t *p_sys = p_dec->p_sys;
980 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
981 p_ff_pic->opaque = NULL;
985 #ifdef HAVE_AVCODEC_VA
986 /* hwaccel_context is not present in old ffmpeg version */
987 if( vlc_va_Setup( p_sys->p_va,
988 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
989 p_context->width, p_context->height ) )
991 msg_Err( p_dec, "vlc_va_Setup failed" );
999 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1001 #if LIBAVCODEC_VERSION_MAJOR < 54
1002 p_ff_pic->age = 256*256*256*64;
1005 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
1007 msg_Err( p_dec, "VaGrabSurface failed" );
1012 else if( !p_sys->b_direct_rendering )
1014 /* Not much to do in indirect rendering mode. */
1015 return avcodec_default_get_buffer( p_context, p_ff_pic );
1019 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1020 * so we need to check for direct rendering again. */
1022 int i_width = p_context->width;
1023 int i_height = p_context->height;
1024 avcodec_align_dimensions( p_context, &i_width, &i_height );
1026 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1027 p_context->pix_fmt == PIX_FMT_PAL8 )
1030 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1032 /* Get a new picture */
1033 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1036 bool b_compatible = true;
1037 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1038 p_pic->p[0].i_lines < i_height )
1039 b_compatible = false;
1040 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1043 switch( p_sys->i_codec_id )
1053 i_align = i == 0 ? 16 : 8;
1056 if( p_pic->p[i].i_pitch % i_align )
1057 b_compatible = false;
1058 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1059 b_compatible = false;
1061 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1063 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1064 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1065 b_compatible = false;
1069 decoder_DeletePicture( p_dec, p_pic );
1073 if( p_sys->i_direct_rendering_used != 1 )
1075 msg_Dbg( p_dec, "using direct rendering" );
1076 p_sys->i_direct_rendering_used = 1;
1079 p_context->draw_horiz_band = NULL;
1081 p_ff_pic->opaque = (void*)p_pic;
1082 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1083 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1084 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1085 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1086 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1088 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1089 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1090 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1091 p_ff_pic->linesize[3] = 0;
1093 #if LIBAVCODEC_VERSION_MAJOR < 54
1094 p_ff_pic->age = 256*256*256*64;
1101 if( p_sys->i_direct_rendering_used != 0 )
1103 msg_Warn( p_dec, "disabling direct rendering" );
1104 p_sys->i_direct_rendering_used = 0;
1107 return avcodec_default_get_buffer( p_context, p_ff_pic );
1109 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1111 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1113 /* We always use default reget function, it works perfectly fine */
1114 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1117 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1120 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1121 decoder_sys_t *p_sys = p_dec->p_sys;
1125 vlc_va_Release( p_sys->p_va, p_ff_pic );
1127 else if( !p_ff_pic->opaque )
1129 /* We can end up here without the AVFrame being allocated by
1130 * avcodec_default_get_buffer() if VA is used and the frame is
1131 * released when the decoder is closed
1133 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1134 avcodec_default_release_buffer( p_context, p_ff_pic );
1138 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1140 decoder_UnlinkPicture( p_dec, p_pic );
1142 for( int i = 0; i < 4; i++ )
1143 p_ff_pic->data[i] = NULL;
1146 #ifdef HAVE_AVCODEC_VA
1147 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1148 const enum PixelFormat *pi_fmt )
1150 decoder_t *p_dec = p_context->opaque;
1151 decoder_sys_t *p_sys = p_dec->p_sys;
1155 vlc_va_Delete( p_sys->p_va );
1159 /* Try too look for a supported hw acceleration */
1160 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1162 static const char *ppsz_name[PIX_FMT_NB] = {
1163 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1164 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1165 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1166 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1167 #ifdef HAVE_AVCODEC_DXVA2
1168 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1170 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1171 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1173 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1175 /* Only VLD supported */
1176 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1178 if( !var_InheritBool( p_dec, "xlib" ) )
1180 msg_Warn( p_dec, "Ignoring VA API" );
1183 #ifdef HAVE_AVCODEC_VAAPI
1184 msg_Dbg( p_dec, "Trying VA API" );
1185 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1187 msg_Warn( p_dec, "Failed to open VA API" );
1192 #ifdef HAVE_AVCODEC_DXVA2
1193 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1195 msg_Dbg( p_dec, "Trying DXVA2" );
1196 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1198 msg_Warn( p_dec, "Failed to open DXVA2" );
1203 p_context->width > 0 && p_context->height > 0 )
1205 /* We try to call vlc_va_Setup when possible to detect errors when
1206 * possible (later is too late) */
1207 if( vlc_va_Setup( p_sys->p_va,
1208 &p_context->hwaccel_context,
1209 &p_dec->fmt_out.video.i_chroma,
1210 p_context->width, p_context->height ) )
1212 msg_Err( p_dec, "vlc_va_Setup failed" );
1213 vlc_va_Delete( p_sys->p_va );
1220 if( p_sys->p_va->description )
1221 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1223 /* FIXME this will disabled direct rendering
1224 * even if a new pixel format is renegociated
1226 p_sys->b_direct_rendering = false;
1227 p_context->draw_horiz_band = NULL;
1232 /* Fallback to default behaviour */
1233 return avcodec_default_get_format( p_context, pi_fmt );