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 #include <vlc_common.h>
33 #include <vlc_codec.h>
34 #include <vlc_avcodec.h>
39 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
40 # include <libavcodec/avcodec.h>
41 # ifdef HAVE_AVCODEC_VAAPI
42 # include <libavcodec/vaapi.h>
44 # ifdef HAVE_AVCODEC_DXVA2
45 # include <libavcodec/dxva2.h>
47 #elif defined(HAVE_FFMPEG_AVCODEC_H)
48 # include <ffmpeg/avcodec.h>
55 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
56 # define HAVE_AVCODEC_VA
59 /*****************************************************************************
60 * decoder_sys_t : decoder descriptor
61 *****************************************************************************/
64 AVCODEC_COMMON_MEMBERS
66 /* Video decoder specific part */
71 /* for frame skipping algo */
73 enum AVDiscard i_skip_frame;
74 enum AVDiscard i_skip_idct;
76 /* how many decoded frames are late */
78 mtime_t i_late_frames_start;
80 /* for direct rendering */
81 bool b_direct_rendering;
82 int i_direct_rendering_used;
86 /* Hack to force display of still pictures */
90 AVPaletteControl palette;
101 #ifdef HAVE_AVCODEC_MT
102 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
103 # define post_mt(s) vlc_sem_post( &s->sem_mt )
109 /* FIXME (dummy palette for now) */
110 static const AVPaletteControl palette_control;
112 /*****************************************************************************
114 *****************************************************************************/
115 static void ffmpeg_InitCodec ( decoder_t * );
116 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
117 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
118 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
119 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
121 #ifdef HAVE_AVCODEC_VA
122 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
123 const enum PixelFormat * );
126 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
128 uint8_t *p = (uint8_t*)&fcc;
129 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
132 /*****************************************************************************
134 *****************************************************************************/
136 /* Returns a new picture buffer */
137 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
138 AVCodecContext *p_context )
140 decoder_sys_t *p_sys = p_dec->p_sys;
142 p_dec->fmt_out.video.i_width = p_context->width;
143 p_dec->fmt_out.video.i_height = p_context->height;
145 if( !p_context->width || !p_context->height )
147 return NULL; /* invalid display size */
150 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
152 /* we are doomed, but not really, because most codecs set their pix_fmt
154 * FIXME does it make sense here ? */
155 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
157 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
159 /* If an aspect-ratio was specified in the input format then force it */
160 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
162 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
163 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
167 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
168 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
170 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
172 p_dec->fmt_out.video.i_sar_num = 1;
173 p_dec->fmt_out.video.i_sar_den = 1;
177 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
178 p_dec->fmt_in.video.i_frame_rate_base > 0 )
180 p_dec->fmt_out.video.i_frame_rate =
181 p_dec->fmt_in.video.i_frame_rate;
182 p_dec->fmt_out.video.i_frame_rate_base =
183 p_dec->fmt_in.video.i_frame_rate_base;
185 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
187 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
188 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
191 return decoder_NewPicture( p_dec );
194 /*****************************************************************************
195 * InitVideo: initialize the video decoder
196 *****************************************************************************
197 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
198 * opened (done after the first decoded frame).
199 *****************************************************************************/
200 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
201 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
203 decoder_sys_t *p_sys;
206 /* Allocate the memory needed to store the decoder's structure */
207 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
210 p_codec->type = AVMEDIA_TYPE_VIDEO;
211 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
212 p_context->codec_id = i_codec_id;
213 p_sys->p_context = p_context;
214 p_sys->p_codec = p_codec;
215 p_sys->i_codec_id = i_codec_id;
216 p_sys->psz_namecodec = psz_namecodec;
217 p_sys->p_ff_pic = avcodec_alloc_frame();
218 p_sys->b_delayed_open = true;
220 vlc_sem_init( &p_sys->sem_mt, 0 );
222 /* ***** Fill p_context with init values ***** */
223 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
225 /* ***** Get configuration of ffmpeg plugin ***** */
226 p_sys->p_context->workaround_bugs =
227 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
228 p_sys->p_context->error_recognition =
229 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
231 if( var_CreateGetBool( p_dec, "grayscale" ) )
232 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
234 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
235 if( i_val ) p_sys->p_context->debug_mv = i_val;
237 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
238 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
240 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
241 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
242 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
243 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
244 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
246 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
247 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
249 /* ***** ffmpeg frame skipping ***** */
250 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
252 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
255 p_sys->p_context->skip_frame = AVDISCARD_NONE;
258 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
261 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
264 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
267 p_sys->p_context->skip_frame = AVDISCARD_ALL;
270 p_sys->p_context->skip_frame = AVDISCARD_NONE;
273 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
275 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
278 p_sys->p_context->skip_idct = AVDISCARD_NONE;
281 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
284 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
287 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
290 p_sys->p_context->skip_idct = AVDISCARD_ALL;
293 p_sys->p_context->skip_idct = AVDISCARD_NONE;
296 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
298 /* ***** ffmpeg direct rendering ***** */
299 p_sys->b_direct_rendering = false;
300 p_sys->i_direct_rendering_used = -1;
301 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
302 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
303 /* No idea why ... but this fixes flickering on some TSCC streams */
304 p_sys->i_codec_id != CODEC_ID_TSCC &&
305 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
306 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
307 don't have idea howto implement fallback to libvpx decoder */
308 p_sys->i_codec_id != CODEC_ID_VP8 &&
310 !p_sys->p_context->debug_mv )
312 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
313 * so we need to do another check in ffmpeg_GetFrameBuf() */
314 p_sys->b_direct_rendering = true;
317 /* ffmpeg doesn't properly release old pictures when frames are skipped */
318 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
319 if( p_sys->b_direct_rendering )
321 msg_Dbg( p_dec, "trying to use direct rendering" );
322 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
326 msg_Dbg( p_dec, "direct rendering is disabled" );
329 /* Always use our get_buffer wrapper so we can calculate the
331 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
332 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
333 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
334 p_sys->p_context->opaque = p_dec;
336 #ifdef HAVE_AVCODEC_MT
337 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
338 if( i_thread_count <= 0 )
339 i_thread_count = vlc_GetCPUCount();
340 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
341 p_sys->p_context->thread_count = i_thread_count;
344 #ifdef HAVE_AVCODEC_VA
345 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
347 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
348 i_codec_id == CODEC_ID_MPEG4 ||
349 i_codec_id == CODEC_ID_H264 ||
350 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
352 #ifdef HAVE_AVCODEC_MT
353 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
355 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
356 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
359 p_sys->p_context->get_format = ffmpeg_GetFormat;
363 /* ***** misc init ***** */
364 p_sys->i_pts = VLC_TS_INVALID;
365 p_sys->b_has_b_frames = false;
366 p_sys->b_first_frame = true;
367 p_sys->b_flush = false;
368 p_sys->i_late_frames = 0;
370 /* Set output properties */
371 p_dec->fmt_out.i_cat = VIDEO_ES;
372 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
374 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
375 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
377 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
380 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
381 if( p_dec->fmt_in.video.p_palette )
383 p_sys->palette.palette_changed = 1;
385 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
391 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
392 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
393 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
394 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
396 p_sys->palette.palette[i] = c.u;
398 p_sys->p_context->palctrl = &p_sys->palette;
400 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
401 if( p_dec->fmt_out.video.p_palette )
402 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
404 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
406 p_sys->p_context->palctrl = &p_sys->palette;
409 /* ***** init this codec with special data ***** */
410 ffmpeg_InitCodec( p_dec );
412 /* ***** Open the codec ***** */
413 if( ffmpeg_OpenCodec( p_dec ) < 0 )
415 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
416 av_free( p_sys->p_ff_pic );
417 vlc_sem_destroy( &p_sys->sem_mt );
425 /*****************************************************************************
426 * DecodeVideo: Called to decode one or more frames
427 *****************************************************************************/
428 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
430 decoder_sys_t *p_sys = p_dec->p_sys;
431 AVCodecContext *p_context = p_sys->p_context;
433 int b_null_size = false;
436 if( !pp_block || !*pp_block )
439 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
441 ffmpeg_InitCodec( p_dec );
442 if( p_sys->b_delayed_open )
444 if( ffmpeg_OpenCodec( p_dec ) )
445 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
450 if( p_sys->b_delayed_open )
452 block_Release( p_block );
456 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
458 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
460 p_sys->i_late_frames = 0;
462 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
463 avcodec_flush_buffers( p_context );
465 block_Release( p_block );
469 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
471 /* Do not care about late frames when prerolling
472 * TODO avoid decoding of non reference frame
473 * (ie all B except for H264 where it depends only on nal_ref_idc) */
474 p_sys->i_late_frames = 0;
477 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
478 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
480 if( p_sys->i_pts > VLC_TS_INVALID )
482 msg_Err( p_dec, "more than 5 seconds of late video -> "
483 "dropping frame (computer too slow ?)" );
484 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
486 block_Release( p_block );
487 p_sys->i_late_frames--;
491 /* A good idea could be to decode all I pictures and see for the other */
492 if( !p_dec->b_pace_control &&
494 (p_sys->i_late_frames > 4) )
497 if( p_sys->i_late_frames < 12 )
499 p_context->skip_frame =
500 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
501 AVDISCARD_NONREF : p_sys->i_skip_frame;
505 /* picture too late, won't decode
506 * but break picture until a new I, and for mpeg4 ...*/
507 p_sys->i_late_frames--; /* needed else it will never be decrease */
508 block_Release( p_block );
514 if( p_sys->b_hurry_up )
515 p_context->skip_frame = p_sys->i_skip_frame;
516 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
522 if( p_context->width <= 0 || p_context->height <= 0 )
524 if( p_sys->b_hurry_up )
525 p_context->skip_frame = p_sys->i_skip_frame;
528 else if( !b_drawpicture )
530 /* It creates broken picture
531 * FIXME either our parser or ffmpeg is broken */
533 if( p_sys->b_hurry_up )
534 p_context->skip_frame = __MAX( p_context->skip_frame,
540 * Do the actual decoding now */
542 /* Don't forget that ffmpeg requires a little more bytes
543 * that the real frame size */
544 if( p_block->i_buffer > 0 )
546 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
548 p_block = block_Realloc( p_block, 0,
549 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
552 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
554 memset( p_block->p_buffer + p_block->i_buffer, 0,
555 FF_INPUT_BUFFER_PADDING_SIZE );
558 while( p_block->i_buffer > 0 || p_sys->b_flush )
560 int i_used, b_gotpicture;
564 /* Set the PTS/DTS in the context reordered_opaque field */
565 if( p_block->i_pts > VLC_TS_INVALID )
566 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
567 else if( p_block->i_dts > VLC_TS_INVALID )
568 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
570 p_context->reordered_opaque = INT64_MIN;
571 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
573 /* Make sure we don't reuse the same timestamps twice */
575 p_block->i_dts = VLC_TS_INVALID;
579 av_init_packet( &pkt );
580 pkt.data = p_block->p_buffer;
581 pkt.size = p_block->i_buffer;
582 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
583 &b_gotpicture, &pkt );
585 if( b_null_size && !p_sys->b_flush &&
586 p_context->width > 0 && p_context->height > 0 )
588 /* Reparse it to not drop the I frame */
590 if( p_sys->b_hurry_up )
591 p_context->skip_frame = p_sys->i_skip_frame;
592 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
593 &b_gotpicture, &pkt );
598 p_sys->b_first_frame = true;
600 if( p_block->i_buffer <= 0 )
601 p_sys->b_flush = false;
606 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
608 block_Release( p_block );
611 else if( i_used > p_block->i_buffer ||
612 p_context->thread_count > 1 )
614 i_used = p_block->i_buffer;
618 p_block->i_buffer -= i_used;
619 p_block->p_buffer += i_used;
621 /* Nothing to display */
624 if( i_used == 0 ) break;
628 /* Sanity check (seems to be needed for some streams) */
629 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
631 p_sys->b_has_b_frames = true;
634 /* Compute the PTS */
635 mtime_t i_pts = VLC_TS_INVALID;
636 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
638 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
639 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
642 if( !p_context->has_b_frames ||
643 !p_sys->b_has_b_frames ||
644 !p_sys->p_ff_pic->reference ||
645 p_sys->i_pts <= VLC_TS_INVALID )
648 /* Guess what ? The rules are different for Real Video :( */
649 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
650 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
651 p_sys->b_has_b_frames )
653 i_pts = VLC_TS_INVALID;
654 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
662 if( i_pts <= VLC_TS_INVALID )
663 i_pts = p_sys->i_pts;
665 /* Interpolate the next PTS */
666 if( i_pts > VLC_TS_INVALID )
667 p_sys->i_pts = i_pts;
668 if( p_sys->i_pts > VLC_TS_INVALID )
670 /* interpolate the next PTS */
671 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
672 p_dec->fmt_in.video.i_frame_rate_base > 0 )
674 p_sys->i_pts += INT64_C(1000000) *
675 (2 + p_sys->p_ff_pic->repeat_pict) *
676 p_dec->fmt_in.video.i_frame_rate_base /
677 (2 * p_dec->fmt_in.video.i_frame_rate);
679 else if( p_context->time_base.den > 0 )
681 int i_tick = p_context->ticks_per_frame;
685 p_sys->i_pts += INT64_C(1000000) *
686 (2 + p_sys->p_ff_pic->repeat_pict) *
687 i_tick * p_context->time_base.num /
688 (2 * p_context->time_base.den);
692 /* Update frame late count (except when doing preroll) */
693 mtime_t i_display_date = 0;
694 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
695 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
697 if( i_display_date > 0 && i_display_date <= mdate() )
699 p_sys->i_late_frames++;
700 if( p_sys->i_late_frames == 1 )
701 p_sys->i_late_frames_start = mdate();
705 p_sys->i_late_frames = 0;
708 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
711 if( !p_sys->p_ff_pic->opaque )
713 /* Get a new picture */
714 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
717 block_Release( p_block );
721 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
723 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
727 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
728 decoder_LinkPicture( p_dec, p_pic );
731 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
733 /* Fetch again the aspect ratio in case it changed */
734 p_dec->fmt_out.video.i_sar_num
735 = p_context->sample_aspect_ratio.num;
736 p_dec->fmt_out.video.i_sar_den
737 = p_context->sample_aspect_ratio.den;
739 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
741 p_dec->fmt_out.video.i_sar_num = 1;
742 p_dec->fmt_out.video.i_sar_den = 1;
746 /* Send decoded frame to vout */
747 if( i_pts > VLC_TS_INVALID)
751 if( p_sys->b_first_frame )
753 /* Hack to force display of still pictures */
754 p_sys->b_first_frame = false;
755 p_pic->b_force = true;
758 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
759 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
760 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
762 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
763 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
764 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
765 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
766 p_pic->i_qstride * i_mb_h );
767 switch( p_sys->p_ff_pic->qscale_type )
769 case FF_QSCALE_TYPE_MPEG1:
770 p_pic->i_qtype = QTYPE_MPEG1;
772 case FF_QSCALE_TYPE_MPEG2:
773 p_pic->i_qtype = QTYPE_MPEG2;
775 case FF_QSCALE_TYPE_H264:
776 p_pic->i_qtype = QTYPE_H264;
784 decoder_DeletePicture( p_dec, p_pic );
788 block_Release( p_block );
792 /*****************************************************************************
793 * EndVideo: decoder destruction
794 *****************************************************************************
795 * This function is called when the thread ends after a successful
797 *****************************************************************************/
798 void EndVideoDec( decoder_t *p_dec )
800 decoder_sys_t *p_sys = p_dec->p_sys;
804 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
805 if( p_sys->p_context->codec )
806 avcodec_flush_buffers( p_sys->p_context );
810 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
814 vlc_va_Delete( p_sys->p_va );
817 vlc_sem_destroy( &p_sys->sem_mt );
820 /*****************************************************************************
821 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
822 *****************************************************************************/
823 static void ffmpeg_InitCodec( decoder_t *p_dec )
825 decoder_sys_t *p_sys = p_dec->p_sys;
826 int i_size = p_dec->fmt_in.i_extra;
828 if( !i_size ) return;
830 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
834 p_sys->p_context->extradata_size = i_size + 12;
835 p = p_sys->p_context->extradata =
836 malloc( p_sys->p_context->extradata_size );
840 memcpy( &p[0], "SVQ3", 4 );
841 memset( &p[4], 0, 8 );
842 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
844 /* Now remove all atoms before the SMI one */
845 if( p_sys->p_context->extradata_size > 0x5a &&
846 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
848 uint8_t *psz = &p[0x52];
850 while( psz < &p[p_sys->p_context->extradata_size - 8] )
852 int i_size = GetDWBE( psz );
855 /* FIXME handle 1 as long size */
858 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
860 memmove( &p[0x52], psz,
861 &p[p_sys->p_context->extradata_size] - psz );
871 p_sys->p_context->extradata_size = i_size;
872 p_sys->p_context->extradata =
873 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
874 if( p_sys->p_context->extradata )
876 memcpy( p_sys->p_context->extradata,
877 p_dec->fmt_in.p_extra, i_size );
878 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
879 0, FF_INPUT_BUFFER_PADDING_SIZE );
884 /*****************************************************************************
885 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
886 * picture_t structure (when not in direct rendering mode).
887 *****************************************************************************/
888 static void ffmpeg_CopyPicture( decoder_t *p_dec,
889 picture_t *p_pic, AVFrame *p_ff_pic )
891 decoder_sys_t *p_sys = p_dec->p_sys;
895 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
897 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
899 int i_plane, i_size, i_line;
900 uint8_t *p_dst, *p_src;
901 int i_src_stride, i_dst_stride;
903 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
905 p_src = p_ff_pic->data[i_plane];
906 p_dst = p_pic->p[i_plane].p_pixels;
907 i_src_stride = p_ff_pic->linesize[i_plane];
908 i_dst_stride = p_pic->p[i_plane].i_pitch;
910 i_size = __MIN( i_src_stride, i_dst_stride );
911 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
914 vlc_memcpy( p_dst, p_src, i_size );
915 p_src += i_src_stride;
916 p_dst += i_dst_stride;
922 msg_Err( p_dec, "don't know how to convert chroma %i",
923 p_sys->p_context->pix_fmt );
928 /*****************************************************************************
929 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
930 *****************************************************************************
931 * It is used for direct rendering as well as to get the right PTS for each
932 * decoded picture (even in indirect rendering mode).
933 *****************************************************************************/
934 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
937 decoder_t *p_dec = (decoder_t *)p_context->opaque;
938 decoder_sys_t *p_sys = p_dec->p_sys;
942 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
943 p_ff_pic->opaque = NULL;
947 #ifdef HAVE_AVCODEC_VA
948 /* hwaccel_context is not present in old ffmpeg version */
949 if( vlc_va_Setup( p_sys->p_va,
950 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
951 p_sys->p_context->width, p_sys->p_context->height ) )
953 msg_Err( p_dec, "vlc_va_Setup failed" );
961 p_ff_pic->type = FF_BUFFER_TYPE_USER;
962 /* FIXME what is that, should give good value */
963 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
965 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
967 msg_Err( p_dec, "VaGrabSurface failed" );
972 else if( !p_sys->b_direct_rendering )
974 /* Not much to do in indirect rendering mode. */
975 return avcodec_default_get_buffer( p_context, p_ff_pic );
979 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
980 * so we need to check for direct rendering again. */
982 int i_width = p_context->width;
983 int i_height = p_context->height;
984 avcodec_align_dimensions( p_context, &i_width, &i_height );
986 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
987 p_context->pix_fmt == PIX_FMT_PAL8 )
990 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
992 /* Get a new picture */
993 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
996 bool b_compatible = true;
997 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
998 p_pic->p[0].i_lines < i_height )
999 b_compatible = false;
1000 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1003 switch( p_sys->i_codec_id )
1013 i_align = i == 0 ? 16 : 8;
1016 if( p_pic->p[i].i_pitch % i_align )
1017 b_compatible = false;
1018 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1019 b_compatible = false;
1021 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1023 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1024 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1025 b_compatible = false;
1029 decoder_DeletePicture( p_dec, p_pic );
1033 if( p_sys->i_direct_rendering_used != 1 )
1035 msg_Dbg( p_dec, "using direct rendering" );
1036 p_sys->i_direct_rendering_used = 1;
1039 p_context->draw_horiz_band = NULL;
1041 p_ff_pic->opaque = (void*)p_pic;
1042 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1043 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1044 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1045 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1046 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1048 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1049 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1050 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1051 p_ff_pic->linesize[3] = 0;
1053 /* FIXME what is that, should give good value */
1054 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1060 if( p_sys->i_direct_rendering_used != 0 )
1062 msg_Warn( p_dec, "disabling direct rendering" );
1063 p_sys->i_direct_rendering_used = 0;
1066 return avcodec_default_get_buffer( p_context, p_ff_pic );
1068 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1070 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1072 /* We always use default reget function, it works perfectly fine */
1073 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1076 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1079 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1080 decoder_sys_t *p_sys = p_dec->p_sys;
1084 vlc_va_Release( p_sys->p_va, p_ff_pic );
1086 else if( !p_ff_pic->opaque )
1088 /* We can end up here without the AVFrame being allocated by
1089 * avcodec_default_get_buffer() if VA is used and the frame is
1090 * released when the decoder is closed
1092 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1093 avcodec_default_release_buffer( p_context, p_ff_pic );
1097 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1099 decoder_UnlinkPicture( p_dec, p_pic );
1101 for( int i = 0; i < 4; i++ )
1102 p_ff_pic->data[i] = NULL;
1105 #ifdef HAVE_AVCODEC_VA
1106 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1107 const enum PixelFormat *pi_fmt )
1109 decoder_t *p_dec = p_context->opaque;
1110 decoder_sys_t *p_sys = p_dec->p_sys;
1114 vlc_va_Delete( p_sys->p_va );
1118 /* Try too look for a supported hw acceleration */
1119 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1121 static const char *ppsz_name[PIX_FMT_NB] = {
1122 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1123 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1124 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1125 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1126 #ifdef HAVE_AVCODEC_DXVA2
1127 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1129 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1130 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1132 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1134 /* Only VLD supported */
1135 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1137 if( !var_InheritBool( p_dec, "xlib" ) )
1139 msg_Warn( p_dec, "Ignoring VA API" );
1142 #ifdef HAVE_AVCODEC_VAAPI
1143 msg_Dbg( p_dec, "Trying VA API" );
1144 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1146 msg_Warn( p_dec, "Failed to open VA API" );
1151 #ifdef HAVE_AVCODEC_DXVA2
1152 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1154 msg_Dbg( p_dec, "Trying DXVA2" );
1155 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1157 msg_Warn( p_dec, "Failed to open DXVA2" );
1162 p_context->width > 0 && p_context->height > 0 )
1164 /* We try to call vlc_va_Setup when possible to detect errors when
1165 * possible (later is too late) */
1166 if( vlc_va_Setup( p_sys->p_va,
1167 &p_context->hwaccel_context,
1168 &p_dec->fmt_out.video.i_chroma,
1169 p_context->width, p_context->height ) )
1171 msg_Err( p_dec, "vlc_va_Setup failed" );
1172 vlc_va_Delete( p_sys->p_va );
1179 if( p_sys->p_va->description )
1180 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1182 /* FIXME this will disabled direct rendering
1183 * even if a new pixel format is renegociated
1185 p_sys->b_direct_rendering = false;
1186 p_context->draw_horiz_band = NULL;
1191 /* Fallback to default behaviour */
1192 return avcodec_default_get_format( p_context, pi_fmt );