1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #if defined(HAVE_LIBAVCODEC_AVCODEC_H) && defined(HAVE_AVCODEC_DXVA2)
33 # if _WIN32_WINNT < 0x600
34 /* dxva2 needs Vista support */
36 # define _WIN32_WINNT 0x600
40 #include <vlc_common.h>
41 #include <vlc_codec.h>
42 #include <vlc_avcodec.h>
47 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
48 # include <libavcodec/avcodec.h>
49 # ifdef HAVE_AVCODEC_VAAPI
50 # include <libavcodec/vaapi.h>
52 # ifdef HAVE_AVCODEC_DXVA2
53 # include <libavcodec/dxva2.h>
55 # ifdef HAVE_AVCODEC_VDA
56 # include <libavcodec/vda.h>
58 #elif defined(HAVE_FFMPEG_AVCODEC_H)
59 # include <ffmpeg/avcodec.h>
66 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2) || defined(HAVE_AVCODEC_VDA)
67 # define HAVE_AVCODEC_VA
70 /*****************************************************************************
71 * decoder_sys_t : decoder descriptor
72 *****************************************************************************/
75 AVCODEC_COMMON_MEMBERS
77 /* Video decoder specific part */
82 /* for frame skipping algo */
84 enum AVDiscard i_skip_frame;
85 enum AVDiscard i_skip_idct;
87 /* how many decoded frames are late */
89 mtime_t i_late_frames_start;
91 /* for direct rendering */
92 bool b_direct_rendering;
93 int i_direct_rendering_used;
97 /* Hack to force display of still pictures */
102 #if LIBAVCODEC_VERSION_MAJOR < 54
103 AVPaletteControl palette;
117 #ifdef HAVE_AVCODEC_MT
118 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
119 # define post_mt(s) vlc_sem_post( &s->sem_mt )
125 /*****************************************************************************
127 *****************************************************************************/
128 static void ffmpeg_InitCodec ( decoder_t * );
129 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
130 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
131 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
132 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
134 #ifdef HAVE_AVCODEC_VA
135 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
136 const enum PixelFormat * );
139 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
141 uint8_t *p = (uint8_t*)&fcc;
142 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
145 /*****************************************************************************
147 *****************************************************************************/
149 /* Returns a new picture buffer */
150 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
151 AVCodecContext *p_context )
153 decoder_sys_t *p_sys = p_dec->p_sys;
155 p_dec->fmt_out.video.i_width = p_context->width;
156 p_dec->fmt_out.video.i_height = p_context->height;
158 if( !p_context->width || !p_context->height )
160 return NULL; /* invalid display size */
163 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
165 /* we are doomed, but not really, because most codecs set their pix_fmt
167 * FIXME does it make sense here ? */
168 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
170 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
172 /* If an aspect-ratio was specified in the input format then force it */
173 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
175 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
176 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
180 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
181 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
183 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
185 p_dec->fmt_out.video.i_sar_num = 1;
186 p_dec->fmt_out.video.i_sar_den = 1;
190 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
191 p_dec->fmt_in.video.i_frame_rate_base > 0 )
193 p_dec->fmt_out.video.i_frame_rate =
194 p_dec->fmt_in.video.i_frame_rate;
195 p_dec->fmt_out.video.i_frame_rate_base =
196 p_dec->fmt_in.video.i_frame_rate_base;
198 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
200 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
201 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
204 return decoder_NewPicture( p_dec );
207 /*****************************************************************************
208 * InitVideo: initialize the video decoder
209 *****************************************************************************
210 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
211 * opened (done after the first decoded frame).
212 *****************************************************************************/
213 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
214 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
216 decoder_sys_t *p_sys;
219 /* Allocate the memory needed to store the decoder's structure */
220 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
223 p_codec->type = AVMEDIA_TYPE_VIDEO;
224 p_context->codec_type = AVMEDIA_TYPE_VIDEO;
225 p_context->codec_id = i_codec_id;
226 p_sys->p_context = p_context;
227 p_sys->p_codec = p_codec;
228 p_sys->i_codec_id = i_codec_id;
229 p_sys->psz_namecodec = psz_namecodec;
230 p_sys->p_ff_pic = avcodec_alloc_frame();
231 p_sys->b_delayed_open = true;
233 vlc_sem_init( &p_sys->sem_mt, 0 );
235 /* ***** Fill p_context with init values ***** */
236 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
238 /* ***** Get configuration of ffmpeg plugin ***** */
239 p_sys->p_context->workaround_bugs =
240 var_InheritInteger( p_dec, "avcodec-workaround-bugs" );
241 #if LIBAVCODEC_VERSION_MAJOR < 54
242 p_sys->p_context->error_recognition =
244 p_sys->p_context->err_recognition =
246 var_InheritInteger( p_dec, "avcodec-error-resilience" );
248 if( var_CreateGetBool( p_dec, "grayscale" ) )
249 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
251 i_val = var_CreateGetInteger( p_dec, "avcodec-vismv" );
252 if( i_val ) p_sys->p_context->debug_mv = i_val;
254 i_val = var_CreateGetInteger( p_dec, "avcodec-lowres" );
255 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
257 i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" );
258 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
259 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
260 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
261 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
263 if( var_CreateGetBool( p_dec, "avcodec-fast" ) )
264 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
266 /* ***** ffmpeg frame skipping ***** */
267 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" );
269 switch( var_CreateGetInteger( p_dec, "avcodec-skip-frame" ) )
272 p_sys->p_context->skip_frame = AVDISCARD_NONE;
275 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
278 p_sys->p_context->skip_frame = AVDISCARD_NONREF;
281 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
284 p_sys->p_context->skip_frame = AVDISCARD_ALL;
287 p_sys->p_context->skip_frame = AVDISCARD_NONE;
290 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
292 switch( var_CreateGetInteger( p_dec, "avcodec-skip-idct" ) )
295 p_sys->p_context->skip_idct = AVDISCARD_NONE;
298 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
301 p_sys->p_context->skip_idct = AVDISCARD_NONREF;
304 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
307 p_sys->p_context->skip_idct = AVDISCARD_ALL;
310 p_sys->p_context->skip_idct = AVDISCARD_NONE;
313 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
315 /* ***** ffmpeg direct rendering ***** */
316 p_sys->b_direct_rendering = false;
317 p_sys->i_direct_rendering_used = -1;
318 if( var_CreateGetBool( p_dec, "avcodec-dr" ) &&
319 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
320 /* No idea why ... but this fixes flickering on some TSCC streams */
321 p_sys->i_codec_id != CODEC_ID_TSCC && p_sys->i_codec_id != CODEC_ID_CSCD &&
322 p_sys->i_codec_id != CODEC_ID_CINEPAK &&
323 #if (LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 68, 2 ) ) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 100, 1 ) )
324 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
325 don't have idea howto implement fallback to libvpx decoder */
326 p_sys->i_codec_id != CODEC_ID_VP8 &&
328 !p_sys->p_context->debug_mv )
330 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
331 * so we need to do another check in ffmpeg_GetFrameBuf() */
332 p_sys->b_direct_rendering = true;
335 /* ffmpeg doesn't properly release old pictures when frames are skipped */
336 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
337 if( p_sys->b_direct_rendering )
339 msg_Dbg( p_dec, "trying to use direct rendering" );
340 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
344 msg_Dbg( p_dec, "direct rendering is disabled" );
347 /* Always use our get_buffer wrapper so we can calculate the
349 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
350 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
351 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
352 p_sys->p_context->opaque = p_dec;
354 #ifdef HAVE_AVCODEC_MT
355 int i_thread_count = var_InheritInteger( p_dec, "avcodec-threads" );
356 if( i_thread_count <= 0 )
358 i_thread_count = vlc_GetCPUCount();
359 if( i_thread_count > 1 )
362 //FIXME: take in count the decoding time
363 i_thread_count = __MIN( i_thread_count, 4 );
365 i_thread_count = __MIN( i_thread_count, 16 );
366 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
367 p_sys->p_context->thread_count = i_thread_count;
370 #ifdef HAVE_AVCODEC_VA
371 const bool b_use_hw = var_CreateGetBool( p_dec, "avcodec-hw" );
373 (i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ||
374 i_codec_id == CODEC_ID_MPEG4 ||
375 i_codec_id == CODEC_ID_H264 ||
376 i_codec_id == CODEC_ID_VC1 || i_codec_id == CODEC_ID_WMV3) )
378 #ifdef HAVE_AVCODEC_MT
379 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
381 msg_Warn( p_dec, "threaded frame decoding is not compatible with ffmpeg-hw, disabled" );
382 p_sys->p_context->thread_type &= ~FF_THREAD_FRAME;
384 if( ( p_sys->p_context->thread_type & FF_THREAD_SLICE ) &&
385 ( i_codec_id == CODEC_ID_MPEG1VIDEO || i_codec_id == CODEC_ID_MPEG2VIDEO ) )
387 msg_Warn( p_dec, "threaded slice decoding is not compatible with ffmpeg-hw, disabled" );
388 p_sys->p_context->thread_type &= ~FF_THREAD_SLICE;
391 p_sys->p_context->get_format = ffmpeg_GetFormat;
394 #ifdef HAVE_AVCODEC_MT
395 if( p_sys->p_context->thread_type & FF_THREAD_FRAME )
396 p_dec->i_extra_picture_buffers = 2 * p_sys->p_context->thread_count;
400 /* ***** misc init ***** */
401 p_sys->i_pts = VLC_TS_INVALID;
402 p_sys->b_has_b_frames = false;
403 p_sys->b_first_frame = true;
404 p_sys->b_flush = false;
405 p_sys->i_late_frames = 0;
407 /* Set output properties */
408 p_dec->fmt_out.i_cat = VIDEO_ES;
409 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
411 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
412 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
414 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
416 #if LIBAVCODEC_VERSION_MAJOR < 54
418 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
419 if( p_dec->fmt_in.video.p_palette )
421 p_sys->palette.palette_changed = 1;
423 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
429 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
430 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
431 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
432 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
434 p_sys->palette.palette[i] = c.u;
436 p_sys->p_context->palctrl = &p_sys->palette;
438 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
439 if( p_dec->fmt_out.video.p_palette )
440 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
442 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
444 p_sys->p_context->palctrl = &p_sys->palette;
450 /* ***** init this codec with special data ***** */
451 ffmpeg_InitCodec( p_dec );
453 /* ***** Open the codec ***** */
454 if( ffmpeg_OpenCodec( p_dec ) < 0 )
456 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
457 av_free( p_sys->p_ff_pic );
458 vlc_sem_destroy( &p_sys->sem_mt );
466 /*****************************************************************************
467 * DecodeVideo: Called to decode one or more frames
468 *****************************************************************************/
469 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
471 decoder_sys_t *p_sys = p_dec->p_sys;
472 AVCodecContext *p_context = p_sys->p_context;
474 int b_null_size = false;
477 if( !pp_block || !*pp_block )
480 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
482 ffmpeg_InitCodec( p_dec );
483 if( p_sys->b_delayed_open )
485 if( ffmpeg_OpenCodec( p_dec ) )
486 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
491 if( p_sys->b_delayed_open )
493 block_Release( p_block );
497 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
499 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
501 p_sys->i_late_frames = 0;
503 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
504 avcodec_flush_buffers( p_context );
506 block_Release( p_block );
510 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
512 /* Do not care about late frames when prerolling
513 * TODO avoid decoding of non reference frame
514 * (ie all B except for H264 where it depends only on nal_ref_idc) */
515 p_sys->i_late_frames = 0;
518 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
519 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
521 if( p_sys->i_pts > VLC_TS_INVALID )
523 msg_Err( p_dec, "more than 5 seconds of late video -> "
524 "dropping frame (computer too slow ?)" );
525 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
527 block_Release( p_block );
528 p_sys->i_late_frames--;
532 /* A good idea could be to decode all I pictures and see for the other */
533 if( !p_dec->b_pace_control &&
535 (p_sys->i_late_frames > 4) )
538 if( p_sys->i_late_frames < 12 )
540 p_context->skip_frame =
541 (p_sys->i_skip_frame <= AVDISCARD_NONREF) ?
542 AVDISCARD_NONREF : p_sys->i_skip_frame;
546 /* picture too late, won't decode
547 * but break picture until a new I, and for mpeg4 ...*/
548 p_sys->i_late_frames--; /* needed else it will never be decrease */
549 block_Release( p_block );
555 if( p_sys->b_hurry_up )
556 p_context->skip_frame = p_sys->i_skip_frame;
557 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
563 if( p_context->width <= 0 || p_context->height <= 0 )
565 if( p_sys->b_hurry_up )
566 p_context->skip_frame = p_sys->i_skip_frame;
569 else if( !b_drawpicture )
571 /* It creates broken picture
572 * FIXME either our parser or ffmpeg is broken */
574 if( p_sys->b_hurry_up )
575 p_context->skip_frame = __MAX( p_context->skip_frame,
581 * Do the actual decoding now */
583 /* Don't forget that ffmpeg requires a little more bytes
584 * that the real frame size */
585 if( p_block->i_buffer > 0 )
587 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
589 p_block = block_Realloc( p_block, 0,
590 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
593 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
595 memset( p_block->p_buffer + p_block->i_buffer, 0,
596 FF_INPUT_BUFFER_PADDING_SIZE );
599 while( p_block->i_buffer > 0 || p_sys->b_flush )
601 int i_used, b_gotpicture;
605 /* Set the PTS/DTS in the context reordered_opaque field */
606 if( p_block->i_pts > VLC_TS_INVALID )
607 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
608 else if( p_block->i_dts > VLC_TS_INVALID )
609 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
611 p_context->reordered_opaque = INT64_MIN;
612 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
614 /* Make sure we don't reuse the same timestamps twice */
616 p_block->i_dts = VLC_TS_INVALID;
620 av_init_packet( &pkt );
621 pkt.data = p_block->p_buffer;
622 pkt.size = p_block->i_buffer;
623 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
624 &b_gotpicture, &pkt );
626 if( b_null_size && !p_sys->b_flush &&
627 p_context->width > 0 && p_context->height > 0 )
629 /* Reparse it to not drop the I frame */
631 if( p_sys->b_hurry_up )
632 p_context->skip_frame = p_sys->i_skip_frame;
633 i_used = avcodec_decode_video2( p_context, p_sys->p_ff_pic,
634 &b_gotpicture, &pkt );
639 p_sys->b_first_frame = true;
641 if( p_block->i_buffer <= 0 )
642 p_sys->b_flush = false;
647 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
649 block_Release( p_block );
652 else if( i_used > p_block->i_buffer ||
653 p_context->thread_count > 1 )
655 i_used = p_block->i_buffer;
659 p_block->i_buffer -= i_used;
660 p_block->p_buffer += i_used;
662 /* Nothing to display */
665 if( i_used == 0 ) break;
669 /* Sanity check (seems to be needed for some streams) */
670 if( p_sys->p_ff_pic->pict_type == AV_PICTURE_TYPE_B)
672 p_sys->b_has_b_frames = true;
675 /* Compute the PTS */
676 mtime_t i_pts = VLC_TS_INVALID;
677 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
679 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
680 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
683 if( !p_context->has_b_frames ||
684 !p_sys->b_has_b_frames ||
685 !p_sys->p_ff_pic->reference ||
686 p_sys->i_pts <= VLC_TS_INVALID )
689 /* Guess what ? The rules are different for Real Video :( */
690 if( (p_dec->fmt_in.i_codec == VLC_CODEC_RV30 ||
691 p_dec->fmt_in.i_codec == VLC_CODEC_RV40) &&
692 p_sys->b_has_b_frames )
694 i_pts = VLC_TS_INVALID;
695 if(p_sys->p_ff_pic->reference) i_pts = i_ts;
703 if( i_pts <= VLC_TS_INVALID )
704 i_pts = p_sys->i_pts;
706 /* Interpolate the next PTS */
707 if( i_pts > VLC_TS_INVALID )
708 p_sys->i_pts = i_pts;
709 if( p_sys->i_pts > VLC_TS_INVALID )
711 /* interpolate the next PTS */
712 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
713 p_dec->fmt_in.video.i_frame_rate_base > 0 )
715 p_sys->i_pts += INT64_C(1000000) *
716 (2 + p_sys->p_ff_pic->repeat_pict) *
717 p_dec->fmt_in.video.i_frame_rate_base /
718 (2 * p_dec->fmt_in.video.i_frame_rate);
720 else if( p_context->time_base.den > 0 )
722 int i_tick = p_context->ticks_per_frame;
726 p_sys->i_pts += INT64_C(1000000) *
727 (2 + p_sys->p_ff_pic->repeat_pict) *
728 i_tick * p_context->time_base.num /
729 (2 * p_context->time_base.den);
733 /* Update frame late count (except when doing preroll) */
734 mtime_t i_display_date = 0;
735 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
736 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
738 if( i_display_date > 0 && i_display_date <= mdate() )
740 p_sys->i_late_frames++;
741 if( p_sys->i_late_frames == 1 )
742 p_sys->i_late_frames_start = mdate();
746 p_sys->i_late_frames = 0;
749 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
752 if( !p_sys->p_ff_pic->opaque )
754 /* Get a new picture */
755 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
758 block_Release( p_block );
762 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
764 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
768 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
769 decoder_LinkPicture( p_dec, p_pic );
772 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
774 /* Fetch again the aspect ratio in case it changed */
775 p_dec->fmt_out.video.i_sar_num
776 = p_context->sample_aspect_ratio.num;
777 p_dec->fmt_out.video.i_sar_den
778 = p_context->sample_aspect_ratio.den;
780 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
782 p_dec->fmt_out.video.i_sar_num = 1;
783 p_dec->fmt_out.video.i_sar_den = 1;
787 /* Send decoded frame to vout */
788 if( i_pts > VLC_TS_INVALID)
792 if( p_sys->b_first_frame )
794 /* Hack to force display of still pictures */
795 p_sys->b_first_frame = false;
796 p_pic->b_force = true;
799 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
800 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
801 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
803 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
804 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
805 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
806 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
807 p_pic->i_qstride * i_mb_h );
808 switch( p_sys->p_ff_pic->qscale_type )
810 case FF_QSCALE_TYPE_MPEG1:
811 p_pic->i_qtype = QTYPE_MPEG1;
813 case FF_QSCALE_TYPE_MPEG2:
814 p_pic->i_qtype = QTYPE_MPEG2;
816 case FF_QSCALE_TYPE_H264:
817 p_pic->i_qtype = QTYPE_H264;
825 decoder_DeletePicture( p_dec, p_pic );
829 block_Release( p_block );
833 /*****************************************************************************
834 * EndVideo: decoder destruction
835 *****************************************************************************
836 * This function is called when the thread ends after a successful
838 *****************************************************************************/
839 void EndVideoDec( decoder_t *p_dec )
841 decoder_sys_t *p_sys = p_dec->p_sys;
845 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
846 if( p_sys->p_context->codec )
847 avcodec_flush_buffers( p_sys->p_context );
851 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
855 vlc_va_Delete( p_sys->p_va );
858 vlc_sem_destroy( &p_sys->sem_mt );
861 /*****************************************************************************
862 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
863 *****************************************************************************/
864 static void ffmpeg_InitCodec( decoder_t *p_dec )
866 decoder_sys_t *p_sys = p_dec->p_sys;
867 int i_size = p_dec->fmt_in.i_extra;
869 if( !i_size ) return;
871 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
875 p_sys->p_context->extradata_size = i_size + 12;
876 p = p_sys->p_context->extradata =
877 malloc( p_sys->p_context->extradata_size );
881 memcpy( &p[0], "SVQ3", 4 );
882 memset( &p[4], 0, 8 );
883 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
885 /* Now remove all atoms before the SMI one */
886 if( p_sys->p_context->extradata_size > 0x5a &&
887 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
889 uint8_t *psz = &p[0x52];
891 while( psz < &p[p_sys->p_context->extradata_size - 8] )
893 int i_size = GetDWBE( psz );
896 /* FIXME handle 1 as long size */
899 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
901 memmove( &p[0x52], psz,
902 &p[p_sys->p_context->extradata_size] - psz );
912 p_sys->p_context->extradata_size = i_size;
913 p_sys->p_context->extradata =
914 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
915 if( p_sys->p_context->extradata )
917 memcpy( p_sys->p_context->extradata,
918 p_dec->fmt_in.p_extra, i_size );
919 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
920 0, FF_INPUT_BUFFER_PADDING_SIZE );
925 /*****************************************************************************
926 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
927 * picture_t structure (when not in direct rendering mode).
928 *****************************************************************************/
929 static void ffmpeg_CopyPicture( decoder_t *p_dec,
930 picture_t *p_pic, AVFrame *p_ff_pic )
932 decoder_sys_t *p_sys = p_dec->p_sys;
936 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
938 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
940 int i_plane, i_size, i_line;
941 uint8_t *p_dst, *p_src;
942 int i_src_stride, i_dst_stride;
944 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
946 p_src = p_ff_pic->data[i_plane];
947 p_dst = p_pic->p[i_plane].p_pixels;
948 i_src_stride = p_ff_pic->linesize[i_plane];
949 i_dst_stride = p_pic->p[i_plane].i_pitch;
951 i_size = __MIN( i_src_stride, i_dst_stride );
952 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
955 memcpy( p_dst, p_src, i_size );
956 p_src += i_src_stride;
957 p_dst += i_dst_stride;
963 msg_Err( p_dec, "don't know how to convert chroma %i",
964 p_sys->p_context->pix_fmt );
969 /*****************************************************************************
970 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
971 *****************************************************************************
972 * It is used for direct rendering as well as to get the right PTS for each
973 * decoded picture (even in indirect rendering mode).
974 *****************************************************************************/
975 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
978 decoder_t *p_dec = (decoder_t *)p_context->opaque;
979 decoder_sys_t *p_sys = p_dec->p_sys;
983 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
984 p_ff_pic->opaque = NULL;
988 #ifdef HAVE_AVCODEC_VA
989 /* hwaccel_context is not present in old ffmpeg version */
990 if( vlc_va_Setup( p_sys->p_va,
991 &p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
992 p_context->width, p_context->height ) )
994 msg_Err( p_dec, "vlc_va_Setup failed" );
1002 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1004 #if LIBAVCODEC_VERSION_MAJOR < 54
1005 p_ff_pic->age = 256*256*256*64;
1008 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
1010 msg_Err( p_dec, "VaGrabSurface failed" );
1015 else if( !p_sys->b_direct_rendering )
1017 /* Not much to do in indirect rendering mode. */
1018 return avcodec_default_get_buffer( p_context, p_ff_pic );
1022 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1023 * so we need to check for direct rendering again. */
1025 int i_width = p_context->width;
1026 int i_height = p_context->height;
1027 avcodec_align_dimensions( p_context, &i_width, &i_height );
1029 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1030 p_context->pix_fmt == PIX_FMT_PAL8 )
1033 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1035 /* Get a new picture */
1036 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
1039 bool b_compatible = true;
1040 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1041 p_pic->p[0].i_lines < i_height )
1042 b_compatible = false;
1043 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1046 switch( p_sys->i_codec_id )
1056 i_align = i == 0 ? 16 : 8;
1059 if( p_pic->p[i].i_pitch % i_align )
1060 b_compatible = false;
1061 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1062 b_compatible = false;
1064 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1066 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1067 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1068 b_compatible = false;
1072 decoder_DeletePicture( p_dec, p_pic );
1076 if( p_sys->i_direct_rendering_used != 1 )
1078 msg_Dbg( p_dec, "using direct rendering" );
1079 p_sys->i_direct_rendering_used = 1;
1082 p_context->draw_horiz_band = NULL;
1084 p_ff_pic->opaque = (void*)p_pic;
1085 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1086 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1087 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1088 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1089 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1091 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1092 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1093 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1094 p_ff_pic->linesize[3] = 0;
1096 #if LIBAVCODEC_VERSION_MAJOR < 54
1097 p_ff_pic->age = 256*256*256*64;
1104 if( p_sys->i_direct_rendering_used != 0 )
1106 msg_Warn( p_dec, "disabling direct rendering" );
1107 p_sys->i_direct_rendering_used = 0;
1110 return avcodec_default_get_buffer( p_context, p_ff_pic );
1112 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1114 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1116 /* We always use default reget function, it works perfectly fine */
1117 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1120 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1123 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1124 decoder_sys_t *p_sys = p_dec->p_sys;
1128 vlc_va_Release( p_sys->p_va, p_ff_pic );
1130 else if( !p_ff_pic->opaque )
1132 /* We can end up here without the AVFrame being allocated by
1133 * avcodec_default_get_buffer() if VA is used and the frame is
1134 * released when the decoder is closed
1136 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1137 avcodec_default_release_buffer( p_context, p_ff_pic );
1141 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1143 decoder_UnlinkPicture( p_dec, p_pic );
1145 for( int i = 0; i < 4; i++ )
1146 p_ff_pic->data[i] = NULL;
1149 #ifdef HAVE_AVCODEC_VA
1150 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context,
1151 const enum PixelFormat *pi_fmt )
1153 decoder_t *p_dec = p_context->opaque;
1154 decoder_sys_t *p_sys = p_dec->p_sys;
1158 vlc_va_Delete( p_sys->p_va );
1162 /* Try too look for a supported hw acceleration */
1163 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1165 static const char *ppsz_name[PIX_FMT_NB] = {
1166 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1167 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1168 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1169 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1170 #ifdef HAVE_AVCODEC_DXVA2
1171 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1173 #ifdef HAVE_AVCODEC_VDA
1174 [PIX_FMT_VDA_VLD] = "PIX_FMT_VDA_VLD",
1176 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1177 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1179 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1181 /* Only VLD supported */
1182 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1184 if( !var_InheritBool( p_dec, "xlib" ) )
1186 msg_Warn( p_dec, "Ignoring VA API" );
1189 #ifdef HAVE_AVCODEC_VAAPI
1190 msg_Dbg( p_dec, "Trying VA API" );
1191 p_sys->p_va = vlc_va_NewVaapi( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1193 msg_Warn( p_dec, "Failed to open VA API" );
1198 #ifdef HAVE_AVCODEC_DXVA2
1199 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1201 msg_Dbg( p_dec, "Trying DXVA2" );
1202 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1204 msg_Warn( p_dec, "Failed to open DXVA2" );
1208 #ifdef HAVE_AVCODEC_VDA
1209 if( pi_fmt[i] == PIX_FMT_VDA_VLD )
1211 msg_Dbg( p_dec, "Trying VDA" );
1212 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 );
1214 msg_Warn( p_dec, "Failed to open VDA" );
1219 p_context->width > 0 && p_context->height > 0 )
1221 /* We try to call vlc_va_Setup when possible to detect errors when
1222 * possible (later is too late) */
1223 if( vlc_va_Setup( p_sys->p_va,
1224 &p_context->hwaccel_context,
1225 &p_dec->fmt_out.video.i_chroma,
1226 p_context->width, p_context->height ) )
1228 msg_Err( p_dec, "vlc_va_Setup failed" );
1229 vlc_va_Delete( p_sys->p_va );
1236 if( p_sys->p_va->description )
1237 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1239 /* FIXME this will disabled direct rendering
1240 * even if a new pixel format is renegociated
1242 p_sys->b_direct_rendering = false;
1243 p_context->draw_horiz_band = NULL;
1248 /* Fallback to default behaviour */
1249 return avcodec_default_get_format( p_context, pi_fmt );