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 = CODEC_TYPE_VIDEO;
211 p_context->codec_type = CODEC_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" );
348 #ifdef HAVE_AVCODEC_MT
349 msg_Err( p_dec, "ffmpeg-hw is not compatible with ffmpeg-mt" );
351 p_sys->p_context->get_format = ffmpeg_GetFormat;
356 /* ***** misc init ***** */
357 p_sys->i_pts = VLC_TS_INVALID;
358 p_sys->b_has_b_frames = false;
359 p_sys->b_first_frame = true;
360 p_sys->b_flush = false;
361 p_sys->i_late_frames = 0;
363 /* Set output properties */
364 p_dec->fmt_out.i_cat = VIDEO_ES;
365 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
367 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
368 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
370 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
373 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
374 if( p_dec->fmt_in.video.p_palette )
376 p_sys->palette.palette_changed = 1;
378 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
384 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
385 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
386 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
387 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
389 p_sys->palette.palette[i] = c.u;
391 p_sys->p_context->palctrl = &p_sys->palette;
393 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
394 if( p_dec->fmt_out.video.p_palette )
395 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
397 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
399 p_sys->p_context->palctrl = &p_sys->palette;
402 /* ***** init this codec with special data ***** */
403 ffmpeg_InitCodec( p_dec );
405 /* ***** Open the codec ***** */
406 if( ffmpeg_OpenCodec( p_dec ) < 0 )
408 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
409 av_free( p_sys->p_ff_pic );
410 vlc_sem_destroy( &p_sys->sem_mt );
418 /*****************************************************************************
419 * DecodeVideo: Called to decode one or more frames
420 *****************************************************************************/
421 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
423 decoder_sys_t *p_sys = p_dec->p_sys;
424 AVCodecContext *p_context = p_sys->p_context;
426 int b_null_size = false;
429 if( !pp_block || !*pp_block )
432 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
434 ffmpeg_InitCodec( p_dec );
435 if( p_sys->b_delayed_open )
437 if( ffmpeg_OpenCodec( p_dec ) )
438 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
443 if( p_sys->b_delayed_open )
445 block_Release( p_block );
449 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
451 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
453 p_sys->i_late_frames = 0;
455 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
456 avcodec_flush_buffers( p_context );
458 block_Release( p_block );
462 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
464 /* Do not care about late frames when prerolling
465 * TODO avoid decoding of non reference frame
466 * (ie all B except for H264 where it depends only on nal_ref_idc) */
467 p_sys->i_late_frames = 0;
470 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
471 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
473 if( p_sys->i_pts > VLC_TS_INVALID )
475 msg_Err( p_dec, "more than 5 seconds of late video -> "
476 "dropping frame (computer too slow ?)" );
477 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
479 block_Release( p_block );
480 p_sys->i_late_frames--;
484 /* A good idea could be to decode all I pictures and see for the other */
485 if( !p_dec->b_pace_control &&
487 (p_sys->i_late_frames > 4) )
490 if( p_sys->i_late_frames < 12 )
492 p_context->skip_frame =
493 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
494 AVDISCARD_NONREF : p_sys->i_skip_frame;
498 /* picture too late, won't decode
499 * but break picture until a new I, and for mpeg4 ...*/
500 p_sys->i_late_frames--; /* needed else it will never be decrease */
501 block_Release( p_block );
507 if( p_sys->b_hurry_up )
508 p_context->skip_frame = p_sys->i_skip_frame;
509 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
515 if( p_context->width <= 0 || p_context->height <= 0 )
517 if( p_sys->b_hurry_up )
518 p_context->skip_frame = p_sys->i_skip_frame;
521 else if( !b_drawpicture )
523 /* It creates broken picture
524 * FIXME either our parser or ffmpeg is broken */
526 if( p_sys->b_hurry_up )
527 p_context->skip_frame = __MAX( p_context->skip_frame,
533 * Do the actual decoding now */
535 /* Don't forget that ffmpeg requires a little more bytes
536 * that the real frame size */
537 if( p_block->i_buffer > 0 )
539 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
541 p_block = block_Realloc( p_block, 0,
542 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
545 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
547 memset( p_block->p_buffer + p_block->i_buffer, 0,
548 FF_INPUT_BUFFER_PADDING_SIZE );
551 while( p_block->i_buffer > 0 || p_sys->b_flush )
553 int i_used, b_gotpicture;
556 /* Set the PTS/DTS in the context reordered_opaque field */
557 if( p_block->i_pts > VLC_TS_INVALID )
558 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
559 else if( p_block->i_dts > VLC_TS_INVALID )
560 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
562 p_context->reordered_opaque = INT64_MIN;
563 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
565 /* Make sure we don't reuse the same timestamps twice */
567 p_block->i_dts = VLC_TS_INVALID;
571 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
573 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
575 if( b_null_size && !p_sys->b_flush &&
576 p_context->width > 0 && p_context->height > 0 )
578 /* Reparse it to not drop the I frame */
580 if( p_sys->b_hurry_up )
581 p_context->skip_frame = p_sys->i_skip_frame;
582 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
583 &b_gotpicture, p_block->p_buffer,
589 p_sys->b_first_frame = true;
591 if( p_block->i_buffer <= 0 )
592 p_sys->b_flush = false;
597 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
599 block_Release( p_block );
602 else if( i_used > p_block->i_buffer ||
603 p_context->thread_count > 1 )
605 i_used = p_block->i_buffer;
609 p_block->i_buffer -= i_used;
610 p_block->p_buffer += i_used;
612 /* Nothing to display */
615 if( i_used == 0 ) break;
619 /* Sanity check (seems to be needed for some streams) */
620 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
622 p_sys->b_has_b_frames = true;
625 /* Compute the PTS */
626 mtime_t i_pts = VLC_TS_INVALID;
627 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
629 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
630 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
633 if( !p_context->has_b_frames ||
634 !p_sys->b_has_b_frames ||
635 !p_sys->p_ff_pic->reference ||
636 p_sys->i_pts <= VLC_TS_INVALID )
639 /* Guess what ? The rules are different for Real Video :( */
640 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
641 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
642 p_sys->b_has_b_frames )
644 i_pts = VLC_TS_INVALID;
645 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
653 if( i_pts <= VLC_TS_INVALID )
654 i_pts = p_sys->i_pts;
656 /* Interpolate the next PTS */
657 if( i_pts > VLC_TS_INVALID )
658 p_sys->i_pts = i_pts;
659 if( p_sys->i_pts > VLC_TS_INVALID )
661 /* interpolate the next PTS */
662 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
663 p_dec->fmt_in.video.i_frame_rate_base > 0 )
665 p_sys->i_pts += INT64_C(1000000) *
666 (2 + p_sys->p_ff_pic->repeat_pict) *
667 p_dec->fmt_in.video.i_frame_rate_base /
668 (2 * p_dec->fmt_in.video.i_frame_rate);
670 else if( p_context->time_base.den > 0 )
672 int i_tick = p_context->ticks_per_frame;
676 p_sys->i_pts += INT64_C(1000000) *
677 (2 + p_sys->p_ff_pic->repeat_pict) *
678 i_tick * p_context->time_base.num /
679 (2 * p_context->time_base.den);
683 /* Update frame late count (except when doing preroll) */
684 mtime_t i_display_date = 0;
685 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
686 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
688 if( i_display_date > 0 && i_display_date <= mdate() )
690 p_sys->i_late_frames++;
691 if( p_sys->i_late_frames == 1 )
692 p_sys->i_late_frames_start = mdate();
696 p_sys->i_late_frames = 0;
699 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
702 if( !p_sys->p_ff_pic->opaque )
704 /* Get a new picture */
705 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
708 block_Release( p_block );
712 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
714 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
718 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
719 decoder_LinkPicture( p_dec, p_pic );
722 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
724 /* Fetch again the aspect ratio in case it changed */
725 p_dec->fmt_out.video.i_sar_num
726 = p_context->sample_aspect_ratio.num;
727 p_dec->fmt_out.video.i_sar_den
728 = p_context->sample_aspect_ratio.den;
730 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
732 p_dec->fmt_out.video.i_sar_num = 1;
733 p_dec->fmt_out.video.i_sar_den = 1;
737 /* Send decoded frame to vout */
738 if( i_pts > VLC_TS_INVALID)
742 if( p_sys->b_first_frame )
744 /* Hack to force display of still pictures */
745 p_sys->b_first_frame = false;
746 p_pic->b_force = true;
749 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
750 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
751 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
753 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
754 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
755 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
756 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
757 p_pic->i_qstride * i_mb_h );
758 switch( p_sys->p_ff_pic->qscale_type )
760 case FF_QSCALE_TYPE_MPEG1:
761 p_pic->i_qtype = QTYPE_MPEG1;
763 case FF_QSCALE_TYPE_MPEG2:
764 p_pic->i_qtype = QTYPE_MPEG2;
766 case FF_QSCALE_TYPE_H264:
767 p_pic->i_qtype = QTYPE_H264;
775 decoder_DeletePicture( p_dec, p_pic );
779 block_Release( p_block );
783 /*****************************************************************************
784 * EndVideo: decoder destruction
785 *****************************************************************************
786 * This function is called when the thread ends after a successful
788 *****************************************************************************/
789 void EndVideoDec( decoder_t *p_dec )
791 decoder_sys_t *p_sys = p_dec->p_sys;
795 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
796 if( p_sys->p_context->codec )
797 avcodec_flush_buffers( p_sys->p_context );
801 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
805 vlc_va_Delete( p_sys->p_va );
808 vlc_sem_destroy( &p_sys->sem_mt );
811 /*****************************************************************************
812 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
813 *****************************************************************************/
814 static void ffmpeg_InitCodec( decoder_t *p_dec )
816 decoder_sys_t *p_sys = p_dec->p_sys;
817 int i_size = p_dec->fmt_in.i_extra;
819 if( !i_size ) return;
821 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
825 p_sys->p_context->extradata_size = i_size + 12;
826 p = p_sys->p_context->extradata =
827 malloc( p_sys->p_context->extradata_size );
831 memcpy( &p[0], "SVQ3", 4 );
832 memset( &p[4], 0, 8 );
833 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
835 /* Now remove all atoms before the SMI one */
836 if( p_sys->p_context->extradata_size > 0x5a &&
837 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
839 uint8_t *psz = &p[0x52];
841 while( psz < &p[p_sys->p_context->extradata_size - 8] )
843 int i_size = GetDWBE( psz );
846 /* FIXME handle 1 as long size */
849 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
851 memmove( &p[0x52], psz,
852 &p[p_sys->p_context->extradata_size] - psz );
862 p_sys->p_context->extradata_size = i_size;
863 p_sys->p_context->extradata =
864 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
865 if( p_sys->p_context->extradata )
867 memcpy( p_sys->p_context->extradata,
868 p_dec->fmt_in.p_extra, i_size );
869 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
870 0, FF_INPUT_BUFFER_PADDING_SIZE );
875 /*****************************************************************************
876 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
877 * picture_t structure (when not in direct rendering mode).
878 *****************************************************************************/
879 static void ffmpeg_CopyPicture( decoder_t *p_dec,
880 picture_t *p_pic, AVFrame *p_ff_pic )
882 decoder_sys_t *p_sys = p_dec->p_sys;
886 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
888 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
890 int i_plane, i_size, i_line;
891 uint8_t *p_dst, *p_src;
892 int i_src_stride, i_dst_stride;
894 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
896 p_src = p_ff_pic->data[i_plane];
897 p_dst = p_pic->p[i_plane].p_pixels;
898 i_src_stride = p_ff_pic->linesize[i_plane];
899 i_dst_stride = p_pic->p[i_plane].i_pitch;
901 i_size = __MIN( i_src_stride, i_dst_stride );
902 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
905 vlc_memcpy( p_dst, p_src, i_size );
906 p_src += i_src_stride;
907 p_dst += i_dst_stride;
913 msg_Err( p_dec, "don't know how to convert chroma %i",
914 p_sys->p_context->pix_fmt );
919 /*****************************************************************************
920 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
921 *****************************************************************************
922 * It is used for direct rendering as well as to get the right PTS for each
923 * decoded picture (even in indirect rendering mode).
924 *****************************************************************************/
925 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
928 decoder_t *p_dec = (decoder_t *)p_context->opaque;
929 decoder_sys_t *p_sys = p_dec->p_sys;
933 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
934 p_ff_pic->opaque = NULL;
938 #ifdef HAVE_AVCODEC_VA
939 /* hwaccel_context is not present in old fffmpeg version */
940 if( vlc_va_Setup( p_sys->p_va,
941 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
942 p_sys->p_context->width, p_sys->p_context->height ) )
944 msg_Err( p_dec, "vlc_va_Setup failed" );
952 p_ff_pic->type = FF_BUFFER_TYPE_USER;
953 /* FIXME what is that, should give good value */
954 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
956 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
958 msg_Err( p_dec, "VaGrabSurface failed" );
963 else if( !p_sys->b_direct_rendering )
965 /* Not much to do in indirect rendering mode. */
966 return avcodec_default_get_buffer( p_context, p_ff_pic );
971 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
972 * so we need to check for direct rendering again. */
974 int i_width = p_sys->p_context->width;
975 int i_height = p_sys->p_context->height;
976 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
978 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
979 p_context->pix_fmt == PIX_FMT_PAL8 )
982 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
984 /* Get a new picture */
985 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
988 bool b_compatible = true;
989 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
990 p_pic->p[0].i_lines < i_height )
991 b_compatible = false;
992 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
995 switch( p_sys->i_codec_id )
1005 i_align = i == 0 ? 16 : 8;
1008 if( p_pic->p[i].i_pitch % i_align )
1009 b_compatible = false;
1010 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1011 b_compatible = false;
1013 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1015 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1016 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1017 b_compatible = false;
1021 decoder_DeletePicture( p_dec, p_pic );
1025 if( p_sys->i_direct_rendering_used != 1 )
1027 msg_Dbg( p_dec, "using direct rendering" );
1028 p_sys->i_direct_rendering_used = 1;
1031 p_sys->p_context->draw_horiz_band = NULL;
1033 p_ff_pic->opaque = (void*)p_pic;
1034 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1035 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1036 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1037 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1038 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1040 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1041 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1042 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1043 p_ff_pic->linesize[3] = 0;
1045 /* FIXME what is that, should give good value */
1046 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1052 if( p_sys->i_direct_rendering_used != 0 )
1054 msg_Warn( p_dec, "disabling direct rendering" );
1055 p_sys->i_direct_rendering_used = 0;
1058 return avcodec_default_get_buffer( p_context, p_ff_pic );
1060 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1062 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1064 /* We always use default reget function, it works perfectly fine */
1065 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1068 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1071 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1072 decoder_sys_t *p_sys = p_dec->p_sys;
1076 vlc_va_Release( p_sys->p_va, p_ff_pic );
1078 else if( !p_ff_pic->opaque )
1080 /* We can end up here without the AVFrame being allocated by
1081 * avcodec_default_get_buffer() if VA is used and the frame is
1082 * released when the decoder is closed
1084 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1085 avcodec_default_release_buffer( p_context, p_ff_pic );
1089 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1091 decoder_UnlinkPicture( p_dec, p_pic );
1093 for( int i = 0; i < 4; i++ )
1094 p_ff_pic->data[i] = NULL;
1097 #ifdef HAVE_AVCODEC_VA
1098 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1099 const enum PixelFormat *pi_fmt )
1101 decoder_t *p_dec = p_codec->opaque;
1102 decoder_sys_t *p_sys = p_dec->p_sys;
1106 vlc_va_Delete( p_sys->p_va );
1110 /* Try too look for a supported hw acceleration */
1111 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1113 static const char *ppsz_name[PIX_FMT_NB] = {
1114 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1115 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1116 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1117 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1118 #ifdef HAVE_AVCODEC_DXVA2
1119 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1121 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1122 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1124 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1126 /* Only VLD supported */
1127 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1129 if( !var_InheritBool( p_dec, "xlib" ) )
1131 msg_Warn( p_dec, "Ignoring VA API" );
1134 #ifdef HAVE_AVCODEC_VAAPI
1135 msg_Dbg( p_dec, "Trying VA API" );
1136 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1138 msg_Warn( p_dec, "Failed to open VA API" );
1143 #ifdef HAVE_AVCODEC_DXVA2
1144 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1146 msg_Dbg( p_dec, "Trying DXVA2" );
1147 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1149 msg_Warn( p_dec, "Failed to open DXVA2" );
1154 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1156 /* We try to call vlc_va_Setup when possible to detect errors when
1157 * possible (later is too late) */
1158 if( vlc_va_Setup( p_sys->p_va,
1159 &p_sys->p_context->hwaccel_context,
1160 &p_dec->fmt_out.video.i_chroma,
1161 p_sys->p_context->width, p_sys->p_context->height ) )
1163 msg_Err( p_dec, "vlc_va_Setup failed" );
1164 vlc_va_Delete( p_sys->p_va );
1171 if( p_sys->p_va->description )
1172 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1174 /* FIXME this will disabled direct rendering
1175 * even if a new pixel format is renegociated
1177 p_sys->b_direct_rendering = false;
1178 p_sys->p_context->draw_horiz_band = NULL;
1183 /* Fallback to default behaviour */
1184 return avcodec_default_get_format( p_codec, pi_fmt );