1 /*****************************************************************************
2 * video.c: video decoder using the libavcodec 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>
38 #include <libavcodec/avcodec.h>
39 #include <libavutil/mem.h>
43 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2) || defined(HAVE_AVCODEC_VDA)
44 # define HAVE_AVCODEC_VA
45 # include <libavutil/pixdesc.h>
48 /*****************************************************************************
49 * decoder_sys_t : decoder descriptor
50 *****************************************************************************/
53 AVCODEC_COMMON_MEMBERS
55 /* Video decoder specific part */
60 /* for frame skipping algo */
62 enum AVDiscard i_skip_frame;
63 enum AVDiscard i_skip_idct;
65 /* how many decoded frames are late */
67 mtime_t i_late_frames_start;
69 /* for direct rendering */
70 bool b_direct_rendering;
71 int i_direct_rendering_used;
75 /* Hack to force display of still pictures */
80 #if LIBAVCODEC_VERSION_MAJOR < 54
81 AVPaletteControl palette;
95 #ifdef HAVE_AVCODEC_MT
96 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
97 # define post_mt(s) vlc_sem_post( &s->sem_mt )
103 /*****************************************************************************
105 *****************************************************************************/
106 static void ffmpeg_InitCodec ( decoder_t * );
107 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
108 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
109 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
110 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
112 #ifdef HAVE_AVCODEC_VA
113 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
114 const enum PixelFormat * );
117 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
119 uint8_t *p = (uint8_t*)&fcc;
120 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
123 /*****************************************************************************
125 *****************************************************************************/
127 /* Returns a new picture buffer */
128 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
129 AVCodecContext *p_context )
131 decoder_sys_t *p_sys = p_dec->p_sys;
133 p_dec->fmt_out.video.i_width = p_context->width;
134 p_dec->fmt_out.video.i_height = p_context->height;
136 if( !p_context->width || !p_context->height )
138 return NULL; /* invalid display size */
141 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
143 /* we are doomed, but not really, because most codecs set their pix_fmt
145 * FIXME does it make sense here ? */
146 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
148 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
150 /* If an aspect-ratio was specified in the input format then force it */
151 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
153 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
154 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
158 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
159 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
161 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
163 p_dec->fmt_out.video.i_sar_num = 1;
164 p_dec->fmt_out.video.i_sar_den = 1;
168 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
169 p_dec->fmt_in.video.i_frame_rate_base > 0 )
171 p_dec->fmt_out.video.i_frame_rate =
172 p_dec->fmt_in.video.i_frame_rate;
173 p_dec->fmt_out.video.i_frame_rate_base =
174 p_dec->fmt_in.video.i_frame_rate_base;
176 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
178 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
179 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
182 return decoder_NewPicture( p_dec );
185 /*****************************************************************************
186 * InitVideo: initialize the video decoder
187 *****************************************************************************
188 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
189 * opened (done after the first decoded frame).
190 *****************************************************************************/
191 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
192 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
194 decoder_sys_t *p_sys;
197 /* Allocate the memory needed to store the decoder's structure */
198 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
201 p_codec->type = AVMEDIA_TYPE_VIDEO;
202 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
203 p_context->codec_id = i_codec_id;
204 p_sys->p_context = p_context;
205 p_sys->p_codec = p_codec;
206 p_sys->i_codec_id = i_codec_id;
207 p_sys->psz_namecodec = psz_namecodec;
208 p_sys->p_ff_pic = avcodec_alloc_frame();
209 p_sys->b_delayed_open = true;
211 vlc_sem_init( &p_sys->sem_mt, 0 );
213 /* ***** Fill p_context with init values ***** */
214 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
216 /* ***** Get configuration of ffmpeg plugin ***** */
217 p_sys->p_context->workaround_bugs =
218 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
219 #if LIBAVCODEC_VERSION_MAJOR < 54
220 p_sys->p_context->error_recognition =
222 p_sys->p_context->err_recognition =
224 var_InheritInteger( p_dec, "avcodec-error-resilience" );
226 if( var_CreateGetBool( p_dec, "grayscale" ) )
227 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
229 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
230 if( i_val ) p_sys->p_context->debug_mv = i_val;
232 i_val = var_CreateGetInteger( p_dec, "avcodec-lowres" );
233 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
235 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
236 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
237 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
238 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
239 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
241 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
242 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
244 /* ***** libavcodec frame skipping ***** */
245 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
247 switch( var_CreateGetInteger( p_dec, "avcodec-skip-frame" ) )
250 p_sys->p_context->skip_frame = AVDISCARD_NONE;
253 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
256 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
259 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
262 p_sys->p_context->skip_frame = AVDISCARD_ALL;
265 p_sys->p_context->skip_frame = AVDISCARD_NONE;
268 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
270 switch( var_CreateGetInteger( p_dec, "avcodec-skip-idct" ) )
273 p_sys->p_context->skip_idct = AVDISCARD_NONE;
276 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
279 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
282 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
285 p_sys->p_context->skip_idct = AVDISCARD_ALL;
288 p_sys->p_context->skip_idct = AVDISCARD_NONE;
291 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
293 /* ***** libavcodec direct rendering ***** */
294 p_sys->b_direct_rendering = false;
295 p_sys->i_direct_rendering_used = -1;
296 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
297 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
298 /* No idea why ... but this fixes flickering on some TSCC streams */
299 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
300 p_sys->i_codec_id != CODEC_ID_CINEPAK &&
301 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
302 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
303 don't have idea howto implement fallback to libvpx decoder */
304 p_sys->i_codec_id != CODEC_ID_VP8 &&
306 !p_sys->p_context->debug_mv )
308 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
309 * so we need to do another check in ffmpeg_GetFrameBuf() */
310 p_sys->b_direct_rendering = true;
313 /* libavcodec doesn't properly release old pictures when frames are skipped */
314 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
315 if( p_sys->b_direct_rendering )
317 msg_Dbg( p_dec, "trying to use direct rendering" );
318 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
322 msg_Dbg( p_dec, "direct rendering is disabled" );
325 /* Always use our get_buffer wrapper so we can calculate the
327 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
328 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
329 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
330 p_sys->p_context->opaque = p_dec;
332 #ifdef HAVE_AVCODEC_MT
333 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
334 if( i_thread_count <= 0 )
336 i_thread_count = vlc_GetCPUCount();
337 if( i_thread_count > 1 )
340 //FIXME: take in count the decoding time
341 i_thread_count = __MIN( i_thread_count, 4 );
343 i_thread_count = __MIN( i_thread_count, 16 );
344 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
345 p_sys->p_context->thread_count = i_thread_count;
348 #ifdef HAVE_AVCODEC_VA
349 const bool b_use_hw = var_CreateGetBool( p_dec, "avcodec-hw" );
351 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
352 i_codec_id == CODEC_ID_MPEG4 ||
353 i_codec_id == CODEC_ID_H264 ||
354 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
356 #ifdef HAVE_AVCODEC_MT
357 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
359 msg_Warn( p_dec, "threaded frame decoding is not compatible with libavcodec-hw, disabled" );
360 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
362 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
363 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
365 msg_Warn( p_dec, "threaded slice decoding is not compatible with libavcodec-hw, disabled" );
366 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
369 p_sys->p_context->get_format = ffmpeg_GetFormat;
372 #ifdef HAVE_AVCODEC_MT
373 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
374 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
378 /* ***** misc init ***** */
379 p_sys->i_pts = VLC_TS_INVALID;
380 p_sys->b_has_b_frames = false;
381 p_sys->b_first_frame = true;
382 p_sys->b_flush = false;
383 p_sys->i_late_frames = 0;
385 /* Set output properties */
386 p_dec->fmt_out.i_cat = VIDEO_ES;
387 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
389 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
390 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
392 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
394 #if LIBAVCODEC_VERSION_MAJOR < 54
396 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
397 if( p_dec->fmt_in.video.p_palette )
399 p_sys->palette.palette_changed = 1;
401 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
407 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
408 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
409 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
410 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
412 p_sys->palette.palette[i] = c.u;
414 p_sys->p_context->palctrl = &p_sys->palette;
416 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
417 if( p_dec->fmt_out.video.p_palette )
418 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
420 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
422 p_sys->p_context->palctrl = &p_sys->palette;
428 /* ***** init this codec with special data ***** */
429 ffmpeg_InitCodec( p_dec );
431 /* ***** Open the codec ***** */
432 if( ffmpeg_OpenCodec( p_dec ) < 0 )
434 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
435 av_free( p_sys->p_ff_pic );
436 vlc_sem_destroy( &p_sys->sem_mt );
444 /*****************************************************************************
445 * DecodeVideo: Called to decode one or more frames
446 *****************************************************************************/
447 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
449 decoder_sys_t *p_sys = p_dec->p_sys;
450 AVCodecContext *p_context = p_sys->p_context;
452 int b_null_size = false;
455 if( !pp_block || !*pp_block )
458 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
460 ffmpeg_InitCodec( p_dec );
461 if( p_sys->b_delayed_open )
463 if( ffmpeg_OpenCodec( p_dec ) )
464 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
469 if( p_sys->b_delayed_open )
471 block_Release( p_block );
475 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
477 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
479 p_sys->i_late_frames = 0;
481 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
482 avcodec_flush_buffers( p_context );
484 block_Release( p_block );
488 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
490 /* Do not care about late frames when prerolling
491 * TODO avoid decoding of non reference frame
492 * (ie all B except for H264 where it depends only on nal_ref_idc) */
493 p_sys->i_late_frames = 0;
496 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
497 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
499 if( p_sys->i_pts > VLC_TS_INVALID )
501 msg_Err( p_dec, "more than 5 seconds of late video -> "
502 "dropping frame (computer too slow ?)" );
503 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
505 block_Release( p_block );
506 p_sys->i_late_frames--;
510 /* A good idea could be to decode all I pictures and see for the other */
511 if( !p_dec->b_pace_control &&
513 (p_sys->i_late_frames > 4) )
516 if( p_sys->i_late_frames < 12 )
518 p_context->skip_frame =
519 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
520 AVDISCARD_NONREF : p_sys->i_skip_frame;
524 /* picture too late, won't decode
525 * but break picture until a new I, and for mpeg4 ...*/
526 p_sys->i_late_frames--; /* needed else it will never be decrease */
527 block_Release( p_block );
533 if( p_sys->b_hurry_up )
534 p_context->skip_frame = p_sys->i_skip_frame;
535 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
541 if( p_context->width <= 0 || p_context->height <= 0 )
543 if( p_sys->b_hurry_up )
544 p_context->skip_frame = p_sys->i_skip_frame;
547 else if( !b_drawpicture )
549 /* It creates broken picture
550 * FIXME either our parser or ffmpeg is broken */
552 if( p_sys->b_hurry_up )
553 p_context->skip_frame = __MAX( p_context->skip_frame,
559 * Do the actual decoding now */
561 /* Don't forget that libavcodec requires a little more bytes
562 * that the real frame size */
563 if( p_block->i_buffer > 0 )
565 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
567 p_block = block_Realloc( p_block, 0,
568 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
571 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
573 memset( p_block->p_buffer + p_block->i_buffer, 0,
574 FF_INPUT_BUFFER_PADDING_SIZE );
577 while( p_block->i_buffer > 0 || p_sys->b_flush )
579 int i_used, b_gotpicture;
583 /* Set the PTS/DTS in the context reordered_opaque field */
584 if( p_block->i_pts > VLC_TS_INVALID )
585 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
586 else if( p_block->i_dts > VLC_TS_INVALID )
587 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
589 p_context->reordered_opaque = INT64_MIN;
590 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
592 /* Make sure we don't reuse the same timestamps twice */
594 p_block->i_dts = VLC_TS_INVALID;
598 av_init_packet( &pkt );
599 pkt.data = p_block->p_buffer;
600 pkt.size = p_block->i_buffer;
601 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
602 &b_gotpicture, &pkt );
604 if( b_null_size && !p_sys->b_flush &&
605 p_context->width > 0 && p_context->height > 0 )
607 /* Reparse it to not drop the I frame */
609 if( p_sys->b_hurry_up )
610 p_context->skip_frame = p_sys->i_skip_frame;
611 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
612 &b_gotpicture, &pkt );
617 p_sys->b_first_frame = true;
619 if( p_block->i_buffer <= 0 )
620 p_sys->b_flush = false;
625 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
627 block_Release( p_block );
630 else if( i_used > p_block->i_buffer ||
631 p_context->thread_count > 1 )
633 i_used = p_block->i_buffer;
637 p_block->i_buffer -= i_used;
638 p_block->p_buffer += i_used;
640 /* Nothing to display */
643 if( i_used == 0 ) break;
647 /* Sanity check (seems to be needed for some streams) */
648 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
650 p_sys->b_has_b_frames = true;
653 /* Compute the PTS */
654 mtime_t i_pts = VLC_TS_INVALID;
655 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
657 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
658 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
661 if( !p_context->has_b_frames ||
662 !p_sys->b_has_b_frames ||
663 !p_sys->p_ff_pic->reference ||
664 p_sys->i_pts <= VLC_TS_INVALID )
667 /* Guess what ? The rules are different for Real Video :( */
668 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
669 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
670 p_sys->b_has_b_frames )
672 i_pts = VLC_TS_INVALID;
673 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
681 if( i_pts <= VLC_TS_INVALID )
682 i_pts = p_sys->i_pts;
684 /* Interpolate the next PTS */
685 if( i_pts > VLC_TS_INVALID )
686 p_sys->i_pts = i_pts;
687 if( p_sys->i_pts > VLC_TS_INVALID )
689 /* interpolate the next PTS */
690 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
691 p_dec->fmt_in.video.i_frame_rate_base > 0 )
693 p_sys->i_pts += INT64_C(1000000) *
694 (2 + p_sys->p_ff_pic->repeat_pict) *
695 p_dec->fmt_in.video.i_frame_rate_base /
696 (2 * p_dec->fmt_in.video.i_frame_rate);
698 else if( p_context->time_base.den > 0 )
700 int i_tick = p_context->ticks_per_frame;
704 p_sys->i_pts += INT64_C(1000000) *
705 (2 + p_sys->p_ff_pic->repeat_pict) *
706 i_tick * p_context->time_base.num /
707 (2 * p_context->time_base.den);
711 /* Update frame late count (except when doing preroll) */
712 mtime_t i_display_date = 0;
713 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
714 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
716 if( i_display_date > 0 && i_display_date <= mdate() )
718 p_sys->i_late_frames++;
719 if( p_sys->i_late_frames == 1 )
720 p_sys->i_late_frames_start = mdate();
724 p_sys->i_late_frames = 0;
727 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
730 if( !p_sys->p_ff_pic->opaque )
732 /* Get a new picture */
733 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
736 block_Release( p_block );
740 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
742 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
746 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
747 decoder_LinkPicture( p_dec, p_pic );
750 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
752 /* Fetch again the aspect ratio in case it changed */
753 p_dec->fmt_out.video.i_sar_num
754 = p_context->sample_aspect_ratio.num;
755 p_dec->fmt_out.video.i_sar_den
756 = p_context->sample_aspect_ratio.den;
758 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
760 p_dec->fmt_out.video.i_sar_num = 1;
761 p_dec->fmt_out.video.i_sar_den = 1;
765 /* Send decoded frame to vout */
766 if( i_pts > VLC_TS_INVALID)
770 if( p_sys->b_first_frame )
772 /* Hack to force display of still pictures */
773 p_sys->b_first_frame = false;
774 p_pic->b_force = true;
777 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
778 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
779 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
781 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
782 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
783 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
784 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
785 p_pic->i_qstride * i_mb_h );
786 switch( p_sys->p_ff_pic->qscale_type )
788 case FF_QSCALE_TYPE_MPEG1:
789 p_pic->i_qtype = QTYPE_MPEG1;
791 case FF_QSCALE_TYPE_MPEG2:
792 p_pic->i_qtype = QTYPE_MPEG2;
794 case FF_QSCALE_TYPE_H264:
795 p_pic->i_qtype = QTYPE_H264;
803 decoder_DeletePicture( p_dec, p_pic );
807 block_Release( p_block );
811 /*****************************************************************************
812 * EndVideo: decoder destruction
813 *****************************************************************************
814 * This function is called when the thread ends after a successful
816 *****************************************************************************/
817 void EndVideoDec( decoder_t *p_dec )
819 decoder_sys_t *p_sys = p_dec->p_sys;
823 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
824 if( p_sys->p_context->codec )
825 avcodec_flush_buffers( p_sys->p_context );
829 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
833 vlc_va_Delete( p_sys->p_va );
836 vlc_sem_destroy( &p_sys->sem_mt );
839 /*****************************************************************************
840 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
841 *****************************************************************************/
842 static void ffmpeg_InitCodec( decoder_t *p_dec )
844 decoder_sys_t *p_sys = p_dec->p_sys;
845 int i_size = p_dec->fmt_in.i_extra;
847 if( !i_size ) return;
849 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
853 p_sys->p_context->extradata_size = i_size + 12;
854 p = p_sys->p_context->extradata =
855 malloc( p_sys->p_context->extradata_size );
859 memcpy( &p[0], "SVQ3", 4 );
860 memset( &p[4], 0, 8 );
861 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
863 /* Now remove all atoms before the SMI one */
864 if( p_sys->p_context->extradata_size > 0x5a &&
865 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
867 uint8_t *psz = &p[0x52];
869 while( psz < &p[p_sys->p_context->extradata_size - 8] )
871 int i_size = GetDWBE( psz );
874 /* FIXME handle 1 as long size */
877 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
879 memmove( &p[0x52], psz,
880 &p[p_sys->p_context->extradata_size] - psz );
890 p_sys->p_context->extradata_size = i_size;
891 p_sys->p_context->extradata =
892 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
893 if( p_sys->p_context->extradata )
895 memcpy( p_sys->p_context->extradata,
896 p_dec->fmt_in.p_extra, i_size );
897 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
898 0, FF_INPUT_BUFFER_PADDING_SIZE );
903 /*****************************************************************************
904 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
905 * picture_t structure (when not in direct rendering mode).
906 *****************************************************************************/
907 static void ffmpeg_CopyPicture( decoder_t *p_dec,
908 picture_t *p_pic, AVFrame *p_ff_pic )
910 decoder_sys_t *p_sys = p_dec->p_sys;
914 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
916 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
918 int i_plane, i_size, i_line;
919 uint8_t *p_dst, *p_src;
920 int i_src_stride, i_dst_stride;
922 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
924 p_src = p_ff_pic->data[i_plane];
925 p_dst = p_pic->p[i_plane].p_pixels;
926 i_src_stride = p_ff_pic->linesize[i_plane];
927 i_dst_stride = p_pic->p[i_plane].i_pitch;
929 i_size = __MIN( i_src_stride, i_dst_stride );
930 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
933 memcpy( p_dst, p_src, i_size );
934 p_src += i_src_stride;
935 p_dst += i_dst_stride;
941 msg_Err( p_dec, "don't know how to convert chroma %i",
942 p_sys->p_context->pix_fmt );
947 /*****************************************************************************
948 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
949 *****************************************************************************
950 * It is used for direct rendering as well as to get the right PTS for each
951 * decoded picture (even in indirect rendering mode).
952 *****************************************************************************/
953 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
956 decoder_t *p_dec = (decoder_t *)p_context->opaque;
957 decoder_sys_t *p_sys = p_dec->p_sys;
961 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
962 p_ff_pic->opaque = NULL;
966 #ifdef HAVE_AVCODEC_VA
967 /* hwaccel_context is not present in old ffmpeg version */
968 if( vlc_va_Setup( p_sys->p_va,
969 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
970 p_context->width, p_context->height ) )
972 msg_Err( p_dec, "vlc_va_Setup failed" );
980 p_ff_pic->type = FF_BUFFER_TYPE_USER;
982 #if LIBAVCODEC_VERSION_MAJOR < 54
983 p_ff_pic->age = 256*256*256*64;
986 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
988 msg_Err( p_dec, "VaGrabSurface failed" );
993 else if( !p_sys->b_direct_rendering )
995 /* Not much to do in indirect rendering mode. */
996 return avcodec_default_get_buffer( p_context, p_ff_pic );
1000 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1001 * so we need to check for direct rendering again. */
1003 int i_width = p_context->width;
1004 int i_height = p_context->height;
1005 avcodec_align_dimensions( p_context, &i_width, &i_height );
1007 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1008 p_context->pix_fmt == PIX_FMT_PAL8 )
1011 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1013 /* Get a new picture */
1014 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1017 bool b_compatible = true;
1018 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1019 p_pic->p[0].i_lines < i_height )
1020 b_compatible = false;
1021 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1024 switch( p_sys->i_codec_id )
1034 i_align = i == 0 ? 16 : 8;
1037 if( p_pic->p[i].i_pitch % i_align )
1038 b_compatible = false;
1039 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1040 b_compatible = false;
1042 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1044 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1045 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1046 b_compatible = false;
1050 decoder_DeletePicture( p_dec, p_pic );
1054 if( p_sys->i_direct_rendering_used != 1 )
1056 msg_Dbg( p_dec, "using direct rendering" );
1057 p_sys->i_direct_rendering_used = 1;
1060 p_context->draw_horiz_band = NULL;
1062 p_ff_pic->opaque = (void*)p_pic;
1063 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1064 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1065 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1066 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1067 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1069 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1070 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1071 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1072 p_ff_pic->linesize[3] = 0;
1074 #if LIBAVCODEC_VERSION_MAJOR < 54
1075 p_ff_pic->age = 256*256*256*64;
1082 if( p_sys->i_direct_rendering_used != 0 )
1084 msg_Warn( p_dec, "disabling direct rendering" );
1085 p_sys->i_direct_rendering_used = 0;
1088 return avcodec_default_get_buffer( p_context, p_ff_pic );
1090 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1092 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1094 /* We always use default reget function, it works perfectly fine */
1095 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1098 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1101 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1102 decoder_sys_t *p_sys = p_dec->p_sys;
1106 vlc_va_Release( p_sys->p_va, p_ff_pic );
1108 else if( !p_ff_pic->opaque )
1110 /* We can end up here without the AVFrame being allocated by
1111 * avcodec_default_get_buffer() if VA is used and the frame is
1112 * released when the decoder is closed
1114 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1115 avcodec_default_release_buffer( p_context, p_ff_pic );
1119 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1121 decoder_UnlinkPicture( p_dec, p_pic );
1123 for( int i = 0; i < 4; i++ )
1124 p_ff_pic->data[i] = NULL;
1127 #ifdef HAVE_AVCODEC_VA
1128 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1129 const enum PixelFormat *pi_fmt )
1131 decoder_t *p_dec = p_context->opaque;
1132 decoder_sys_t *p_sys = p_dec->p_sys;
1136 vlc_va_Delete( p_sys->p_va );
1140 /* Try too look for a supported hw acceleration */
1141 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1143 const char *name = av_get_pix_fmt_name(pi_fmt[i]);
1144 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i],
1145 name ? name : "unknown" );
1147 #ifdef HAVE_AVCODEC_VAAPI
1148 /* Only VLD supported */
1149 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1151 msg_Dbg( p_dec, "Trying VA API" );
1152 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1154 msg_Warn( p_dec, "Failed to open VA API" );
1158 #ifdef HAVE_AVCODEC_DXVA2
1159 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1161 msg_Dbg( p_dec, "Trying DXVA2" );
1162 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1164 msg_Warn( p_dec, "Failed to open DXVA2" );
1168 #ifdef HAVE_AVCODEC_VDA
1169 if( pi_fmt[i] == PIX_FMT_VDA_VLD )
1171 msg_Dbg( p_dec, "Trying VDA" );
1172 p_sys->p_va = vlc_va_NewVDA( VLC_OBJECT(p_dec), p_sys->i_codec_id, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
1174 msg_Warn( p_dec, "Failed to open VDA" );
1179 p_context->width > 0 && p_context->height > 0 )
1181 /* We try to call vlc_va_Setup when possible to detect errors when
1182 * possible (later is too late) */
1183 if( vlc_va_Setup( p_sys->p_va,
1184 &p_context->hwaccel_context,
1185 &p_dec->fmt_out.video.i_chroma,
1186 p_context->width, p_context->height ) )
1188 msg_Err( p_dec, "vlc_va_Setup failed" );
1189 vlc_va_Delete( p_sys->p_va );
1196 if( p_sys->p_va->description )
1197 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1199 /* FIXME this will disabled direct rendering
1200 * even if a new pixel format is renegociated
1202 p_sys->b_direct_rendering = false;
1203 p_context->draw_horiz_band = NULL;
1208 /* Fallback to default behaviour */
1209 return avcodec_default_get_format( p_context, pi_fmt );