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 i_thread_count = __MIN( i_thread_count, 16 );
349 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
350 p_sys->p_context->thread_count = i_thread_count;
353 #ifdef HAVE_AVCODEC_VA
354 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
356 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
357 i_codec_id == CODEC_ID_MPEG4 ||
358 i_codec_id == CODEC_ID_H264 ||
359 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
361 #ifdef HAVE_AVCODEC_MT
362 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
364 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
365 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
368 p_sys->p_context->get_format = ffmpeg_GetFormat;
371 #ifdef HAVE_AVCODEC_MT
372 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
373 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
377 /* ***** misc init ***** */
378 p_sys->i_pts = VLC_TS_INVALID;
379 p_sys->b_has_b_frames = false;
380 p_sys->b_first_frame = true;
381 p_sys->b_flush = false;
382 p_sys->i_late_frames = 0;
384 /* Set output properties */
385 p_dec->fmt_out.i_cat = VIDEO_ES;
386 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
388 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
389 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
391 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
394 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
395 if( p_dec->fmt_in.video.p_palette )
397 p_sys->palette.palette_changed = 1;
399 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
405 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
406 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
407 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
408 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
410 p_sys->palette.palette[i] = c.u;
412 p_sys->p_context->palctrl = &p_sys->palette;
414 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
415 if( p_dec->fmt_out.video.p_palette )
416 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
418 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
420 p_sys->p_context->palctrl = &p_sys->palette;
423 /* ***** init this codec with special data ***** */
424 ffmpeg_InitCodec( p_dec );
426 /* ***** Open the codec ***** */
427 if( ffmpeg_OpenCodec( p_dec ) < 0 )
429 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
430 av_free( p_sys->p_ff_pic );
431 vlc_sem_destroy( &p_sys->sem_mt );
439 /*****************************************************************************
440 * DecodeVideo: Called to decode one or more frames
441 *****************************************************************************/
442 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
444 decoder_sys_t *p_sys = p_dec->p_sys;
445 AVCodecContext *p_context = p_sys->p_context;
447 int b_null_size = false;
450 if( !pp_block || !*pp_block )
453 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
455 ffmpeg_InitCodec( p_dec );
456 if( p_sys->b_delayed_open )
458 if( ffmpeg_OpenCodec( p_dec ) )
459 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
464 if( p_sys->b_delayed_open )
466 block_Release( p_block );
470 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
472 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
474 p_sys->i_late_frames = 0;
476 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
477 avcodec_flush_buffers( p_context );
479 block_Release( p_block );
483 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
485 /* Do not care about late frames when prerolling
486 * TODO avoid decoding of non reference frame
487 * (ie all B except for H264 where it depends only on nal_ref_idc) */
488 p_sys->i_late_frames = 0;
491 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
492 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
494 if( p_sys->i_pts > VLC_TS_INVALID )
496 msg_Err( p_dec, "more than 5 seconds of late video -> "
497 "dropping frame (computer too slow ?)" );
498 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
500 block_Release( p_block );
501 p_sys->i_late_frames--;
505 /* A good idea could be to decode all I pictures and see for the other */
506 if( !p_dec->b_pace_control &&
508 (p_sys->i_late_frames > 4) )
511 if( p_sys->i_late_frames < 12 )
513 p_context->skip_frame =
514 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
515 AVDISCARD_NONREF : p_sys->i_skip_frame;
519 /* picture too late, won't decode
520 * but break picture until a new I, and for mpeg4 ...*/
521 p_sys->i_late_frames--; /* needed else it will never be decrease */
522 block_Release( p_block );
528 if( p_sys->b_hurry_up )
529 p_context->skip_frame = p_sys->i_skip_frame;
530 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
536 if( p_context->width <= 0 || p_context->height <= 0 )
538 if( p_sys->b_hurry_up )
539 p_context->skip_frame = p_sys->i_skip_frame;
542 else if( !b_drawpicture )
544 /* It creates broken picture
545 * FIXME either our parser or ffmpeg is broken */
547 if( p_sys->b_hurry_up )
548 p_context->skip_frame = __MAX( p_context->skip_frame,
554 * Do the actual decoding now */
556 /* Don't forget that ffmpeg requires a little more bytes
557 * that the real frame size */
558 if( p_block->i_buffer > 0 )
560 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
562 p_block = block_Realloc( p_block, 0,
563 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
566 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
568 memset( p_block->p_buffer + p_block->i_buffer, 0,
569 FF_INPUT_BUFFER_PADDING_SIZE );
572 while( p_block->i_buffer > 0 || p_sys->b_flush )
574 int i_used, b_gotpicture;
578 /* Set the PTS/DTS in the context reordered_opaque field */
579 if( p_block->i_pts > VLC_TS_INVALID )
580 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
581 else if( p_block->i_dts > VLC_TS_INVALID )
582 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
584 p_context->reordered_opaque = INT64_MIN;
585 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
587 /* Make sure we don't reuse the same timestamps twice */
589 p_block->i_dts = VLC_TS_INVALID;
593 av_init_packet( &pkt );
594 pkt.data = p_block->p_buffer;
595 pkt.size = p_block->i_buffer;
596 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
597 &b_gotpicture, &pkt );
599 if( b_null_size && !p_sys->b_flush &&
600 p_context->width > 0 && p_context->height > 0 )
602 /* Reparse it to not drop the I frame */
604 if( p_sys->b_hurry_up )
605 p_context->skip_frame = p_sys->i_skip_frame;
606 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
607 &b_gotpicture, &pkt );
612 p_sys->b_first_frame = true;
614 if( p_block->i_buffer <= 0 )
615 p_sys->b_flush = false;
620 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
622 block_Release( p_block );
625 else if( i_used > p_block->i_buffer ||
626 p_context->thread_count > 1 )
628 i_used = p_block->i_buffer;
632 p_block->i_buffer -= i_used;
633 p_block->p_buffer += i_used;
635 /* Nothing to display */
638 if( i_used == 0 ) break;
642 /* Sanity check (seems to be needed for some streams) */
643 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
645 p_sys->b_has_b_frames = true;
648 /* Compute the PTS */
649 mtime_t i_pts = VLC_TS_INVALID;
650 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
652 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
653 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
656 if( !p_context->has_b_frames ||
657 !p_sys->b_has_b_frames ||
658 !p_sys->p_ff_pic->reference ||
659 p_sys->i_pts <= VLC_TS_INVALID )
662 /* Guess what ? The rules are different for Real Video :( */
663 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
664 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
665 p_sys->b_has_b_frames )
667 i_pts = VLC_TS_INVALID;
668 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
676 if( i_pts <= VLC_TS_INVALID )
677 i_pts = p_sys->i_pts;
679 /* Interpolate the next PTS */
680 if( i_pts > VLC_TS_INVALID )
681 p_sys->i_pts = i_pts;
682 if( p_sys->i_pts > VLC_TS_INVALID )
684 /* interpolate the next PTS */
685 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
686 p_dec->fmt_in.video.i_frame_rate_base > 0 )
688 p_sys->i_pts += INT64_C(1000000) *
689 (2 + p_sys->p_ff_pic->repeat_pict) *
690 p_dec->fmt_in.video.i_frame_rate_base /
691 (2 * p_dec->fmt_in.video.i_frame_rate);
693 else if( p_context->time_base.den > 0 )
695 int i_tick = p_context->ticks_per_frame;
699 p_sys->i_pts += INT64_C(1000000) *
700 (2 + p_sys->p_ff_pic->repeat_pict) *
701 i_tick * p_context->time_base.num /
702 (2 * p_context->time_base.den);
706 /* Update frame late count (except when doing preroll) */
707 mtime_t i_display_date = 0;
708 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
709 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
711 if( i_display_date > 0 && i_display_date <= mdate() )
713 p_sys->i_late_frames++;
714 if( p_sys->i_late_frames == 1 )
715 p_sys->i_late_frames_start = mdate();
719 p_sys->i_late_frames = 0;
722 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
725 if( !p_sys->p_ff_pic->opaque )
727 /* Get a new picture */
728 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
731 block_Release( p_block );
735 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
737 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
741 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
742 decoder_LinkPicture( p_dec, p_pic );
745 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
747 /* Fetch again the aspect ratio in case it changed */
748 p_dec->fmt_out.video.i_sar_num
749 = p_context->sample_aspect_ratio.num;
750 p_dec->fmt_out.video.i_sar_den
751 = p_context->sample_aspect_ratio.den;
753 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
755 p_dec->fmt_out.video.i_sar_num = 1;
756 p_dec->fmt_out.video.i_sar_den = 1;
760 /* Send decoded frame to vout */
761 if( i_pts > VLC_TS_INVALID)
765 if( p_sys->b_first_frame )
767 /* Hack to force display of still pictures */
768 p_sys->b_first_frame = false;
769 p_pic->b_force = true;
772 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
773 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
774 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
776 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
777 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
778 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
779 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
780 p_pic->i_qstride * i_mb_h );
781 switch( p_sys->p_ff_pic->qscale_type )
783 case FF_QSCALE_TYPE_MPEG1:
784 p_pic->i_qtype = QTYPE_MPEG1;
786 case FF_QSCALE_TYPE_MPEG2:
787 p_pic->i_qtype = QTYPE_MPEG2;
789 case FF_QSCALE_TYPE_H264:
790 p_pic->i_qtype = QTYPE_H264;
798 decoder_DeletePicture( p_dec, p_pic );
802 block_Release( p_block );
806 /*****************************************************************************
807 * EndVideo: decoder destruction
808 *****************************************************************************
809 * This function is called when the thread ends after a successful
811 *****************************************************************************/
812 void EndVideoDec( decoder_t *p_dec )
814 decoder_sys_t *p_sys = p_dec->p_sys;
818 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
819 if( p_sys->p_context->codec )
820 avcodec_flush_buffers( p_sys->p_context );
824 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
828 vlc_va_Delete( p_sys->p_va );
831 vlc_sem_destroy( &p_sys->sem_mt );
834 /*****************************************************************************
835 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
836 *****************************************************************************/
837 static void ffmpeg_InitCodec( decoder_t *p_dec )
839 decoder_sys_t *p_sys = p_dec->p_sys;
840 int i_size = p_dec->fmt_in.i_extra;
842 if( !i_size ) return;
844 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
848 p_sys->p_context->extradata_size = i_size + 12;
849 p = p_sys->p_context->extradata =
850 malloc( p_sys->p_context->extradata_size );
854 memcpy( &p[0], "SVQ3", 4 );
855 memset( &p[4], 0, 8 );
856 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
858 /* Now remove all atoms before the SMI one */
859 if( p_sys->p_context->extradata_size > 0x5a &&
860 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
862 uint8_t *psz = &p[0x52];
864 while( psz < &p[p_sys->p_context->extradata_size - 8] )
866 int i_size = GetDWBE( psz );
869 /* FIXME handle 1 as long size */
872 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
874 memmove( &p[0x52], psz,
875 &p[p_sys->p_context->extradata_size] - psz );
885 p_sys->p_context->extradata_size = i_size;
886 p_sys->p_context->extradata =
887 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
888 if( p_sys->p_context->extradata )
890 memcpy( p_sys->p_context->extradata,
891 p_dec->fmt_in.p_extra, i_size );
892 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
893 0, FF_INPUT_BUFFER_PADDING_SIZE );
898 /*****************************************************************************
899 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
900 * picture_t structure (when not in direct rendering mode).
901 *****************************************************************************/
902 static void ffmpeg_CopyPicture( decoder_t *p_dec,
903 picture_t *p_pic, AVFrame *p_ff_pic )
905 decoder_sys_t *p_sys = p_dec->p_sys;
909 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
911 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
913 int i_plane, i_size, i_line;
914 uint8_t *p_dst, *p_src;
915 int i_src_stride, i_dst_stride;
917 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
919 p_src = p_ff_pic->data[i_plane];
920 p_dst = p_pic->p[i_plane].p_pixels;
921 i_src_stride = p_ff_pic->linesize[i_plane];
922 i_dst_stride = p_pic->p[i_plane].i_pitch;
924 i_size = __MIN( i_src_stride, i_dst_stride );
925 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
928 vlc_memcpy( p_dst, p_src, i_size );
929 p_src += i_src_stride;
930 p_dst += i_dst_stride;
936 msg_Err( p_dec, "don't know how to convert chroma %i",
937 p_sys->p_context->pix_fmt );
942 /*****************************************************************************
943 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
944 *****************************************************************************
945 * It is used for direct rendering as well as to get the right PTS for each
946 * decoded picture (even in indirect rendering mode).
947 *****************************************************************************/
948 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
951 decoder_t *p_dec = (decoder_t *)p_context->opaque;
952 decoder_sys_t *p_sys = p_dec->p_sys;
956 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
957 p_ff_pic->opaque = NULL;
961 #ifdef HAVE_AVCODEC_VA
962 /* hwaccel_context is not present in old ffmpeg version */
963 if( vlc_va_Setup( p_sys->p_va,
964 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
965 p_context->width, p_context->height ) )
967 msg_Err( p_dec, "vlc_va_Setup failed" );
975 p_ff_pic->type = FF_BUFFER_TYPE_USER;
976 /* FIXME what is that, should give good value */
977 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
979 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
981 msg_Err( p_dec, "VaGrabSurface failed" );
986 else if( !p_sys->b_direct_rendering )
988 /* Not much to do in indirect rendering mode. */
989 return avcodec_default_get_buffer( p_context, p_ff_pic );
993 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
994 * so we need to check for direct rendering again. */
996 int i_width = p_context->width;
997 int i_height = p_context->height;
998 avcodec_align_dimensions( p_context, &i_width, &i_height );
1000 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1001 p_context->pix_fmt == PIX_FMT_PAL8 )
1004 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1006 /* Get a new picture */
1007 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1010 bool b_compatible = true;
1011 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1012 p_pic->p[0].i_lines < i_height )
1013 b_compatible = false;
1014 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1017 switch( p_sys->i_codec_id )
1027 i_align = i == 0 ? 16 : 8;
1030 if( p_pic->p[i].i_pitch % i_align )
1031 b_compatible = false;
1032 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1033 b_compatible = false;
1035 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1037 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1038 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1039 b_compatible = false;
1043 decoder_DeletePicture( p_dec, p_pic );
1047 if( p_sys->i_direct_rendering_used != 1 )
1049 msg_Dbg( p_dec, "using direct rendering" );
1050 p_sys->i_direct_rendering_used = 1;
1053 p_context->draw_horiz_band = NULL;
1055 p_ff_pic->opaque = (void*)p_pic;
1056 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1057 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1058 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1059 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1060 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1062 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1063 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1064 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1065 p_ff_pic->linesize[3] = 0;
1067 /* FIXME what is that, should give good value */
1068 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1074 if( p_sys->i_direct_rendering_used != 0 )
1076 msg_Warn( p_dec, "disabling direct rendering" );
1077 p_sys->i_direct_rendering_used = 0;
1080 return avcodec_default_get_buffer( p_context, p_ff_pic );
1082 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1084 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1086 /* We always use default reget function, it works perfectly fine */
1087 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1090 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1093 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1094 decoder_sys_t *p_sys = p_dec->p_sys;
1098 vlc_va_Release( p_sys->p_va, p_ff_pic );
1100 else if( !p_ff_pic->opaque )
1102 /* We can end up here without the AVFrame being allocated by
1103 * avcodec_default_get_buffer() if VA is used and the frame is
1104 * released when the decoder is closed
1106 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1107 avcodec_default_release_buffer( p_context, p_ff_pic );
1111 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1113 decoder_UnlinkPicture( p_dec, p_pic );
1115 for( int i = 0; i < 4; i++ )
1116 p_ff_pic->data[i] = NULL;
1119 #ifdef HAVE_AVCODEC_VA
1120 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1121 const enum PixelFormat *pi_fmt )
1123 decoder_t *p_dec = p_context->opaque;
1124 decoder_sys_t *p_sys = p_dec->p_sys;
1128 vlc_va_Delete( p_sys->p_va );
1132 /* Try too look for a supported hw acceleration */
1133 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1135 static const char *ppsz_name[PIX_FMT_NB] = {
1136 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1137 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1138 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1139 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1140 #ifdef HAVE_AVCODEC_DXVA2
1141 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1143 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1144 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1146 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1148 /* Only VLD supported */
1149 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1151 if( !var_InheritBool( p_dec, "xlib" ) )
1153 msg_Warn( p_dec, "Ignoring VA API" );
1156 #ifdef HAVE_AVCODEC_VAAPI
1157 msg_Dbg( p_dec, "Trying VA API" );
1158 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1160 msg_Warn( p_dec, "Failed to open VA API" );
1165 #ifdef HAVE_AVCODEC_DXVA2
1166 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1168 msg_Dbg( p_dec, "Trying DXVA2" );
1169 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1171 msg_Warn( p_dec, "Failed to open DXVA2" );
1176 p_context->width > 0 && p_context->height > 0 )
1178 /* We try to call vlc_va_Setup when possible to detect errors when
1179 * possible (later is too late) */
1180 if( vlc_va_Setup( p_sys->p_va,
1181 &p_context->hwaccel_context,
1182 &p_dec->fmt_out.video.i_chroma,
1183 p_context->width, p_context->height ) )
1185 msg_Err( p_dec, "vlc_va_Setup failed" );
1186 vlc_va_Delete( p_sys->p_va );
1193 if( p_sys->p_va->description )
1194 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1196 /* FIXME this will disabled direct rendering
1197 * even if a new pixel format is renegociated
1199 p_sys->b_direct_rendering = false;
1200 p_context->draw_horiz_band = NULL;
1205 /* Fallback to default behaviour */
1206 return avcodec_default_get_format( p_context, pi_fmt );