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
58 #if defined(FF_THREAD_FRAME)
59 # define HAVE_AVCODEC_MT
62 /*****************************************************************************
63 * decoder_sys_t : decoder descriptor
64 *****************************************************************************/
69 /* Video decoder specific part */
74 /* for frame skipping algo */
76 enum AVDiscard i_skip_frame;
77 enum AVDiscard i_skip_idct;
79 /* how many decoded frames are late */
81 mtime_t i_late_frames_start;
83 /* for direct rendering */
84 bool b_direct_rendering;
85 int i_direct_rendering_used;
89 /* Hack to force display of still pictures */
93 AVPaletteControl palette;
104 #ifdef HAVE_AVCODEC_MT
105 # define wait_mt(s) vlc_sem_wait( &s->sem_mt )
106 # define post_mt(s) vlc_sem_post( &s->sem_mt )
112 /* FIXME (dummy palette for now) */
113 static const AVPaletteControl palette_control;
115 /*****************************************************************************
117 *****************************************************************************/
118 static void ffmpeg_InitCodec ( decoder_t * );
119 static int ffmpeg_OpenCodec ( decoder_t * );
120 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
121 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
122 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
123 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
125 #ifdef HAVE_AVCODEC_VA
126 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
127 const enum PixelFormat * );
130 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
132 uint8_t *p = (uint8_t*)&fcc;
133 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
136 /*****************************************************************************
138 *****************************************************************************/
140 /* Returns a new picture buffer */
141 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
142 AVCodecContext *p_context )
144 decoder_sys_t *p_sys = p_dec->p_sys;
146 p_dec->fmt_out.video.i_width = p_context->width;
147 p_dec->fmt_out.video.i_height = p_context->height;
149 if( !p_context->width || !p_context->height )
151 return NULL; /* invalid display size */
154 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
156 /* we are doomed, but not really, because most codecs set their pix_fmt
158 * FIXME does it make sense here ? */
159 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
161 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
163 /* If an aspect-ratio was specified in the input format then force it */
164 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
166 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
167 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
171 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
172 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
174 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
176 p_dec->fmt_out.video.i_sar_num = 1;
177 p_dec->fmt_out.video.i_sar_den = 1;
181 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
182 p_dec->fmt_in.video.i_frame_rate_base > 0 )
184 p_dec->fmt_out.video.i_frame_rate =
185 p_dec->fmt_in.video.i_frame_rate;
186 p_dec->fmt_out.video.i_frame_rate_base =
187 p_dec->fmt_in.video.i_frame_rate_base;
189 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
191 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
192 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
195 return decoder_NewPicture( p_dec );
198 /*****************************************************************************
199 * InitVideo: initialize the video decoder
200 *****************************************************************************
201 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
202 * opened (done after the first decoded frame).
203 *****************************************************************************/
204 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
205 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
207 decoder_sys_t *p_sys;
210 /* Allocate the memory needed to store the decoder's structure */
211 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
214 p_codec->type = CODEC_TYPE_VIDEO;
215 p_context->codec_type = CODEC_TYPE_VIDEO;
216 p_context->codec_id = i_codec_id;
217 p_sys->p_context = p_context;
218 p_sys->p_codec = p_codec;
219 p_sys->i_codec_id = i_codec_id;
220 p_sys->psz_namecodec = psz_namecodec;
221 p_sys->p_ff_pic = avcodec_alloc_frame();
222 p_sys->b_delayed_open = true;
224 vlc_sem_init( &p_sys->sem_mt, 0 );
226 /* ***** Fill p_context with init values ***** */
227 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
229 /* ***** Get configuration of ffmpeg plugin ***** */
230 p_sys->p_context->workaround_bugs =
231 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
232 p_sys->p_context->error_recognition =
233 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
235 if( var_CreateGetBool( p_dec, "grayscale" ) )
236 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
238 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
239 if( i_val ) p_sys->p_context->debug_mv = i_val;
241 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
242 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
244 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
245 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
246 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
247 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
248 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
250 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
251 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
253 /* ***** ffmpeg frame skipping ***** */
254 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
256 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
259 p_sys->p_context->skip_frame = AVDISCARD_NONE;
262 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
265 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
268 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
271 p_sys->p_context->skip_frame = AVDISCARD_ALL;
274 p_sys->p_context->skip_frame = AVDISCARD_NONE;
277 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
279 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
282 p_sys->p_context->skip_idct = AVDISCARD_NONE;
285 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
288 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
291 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
294 p_sys->p_context->skip_idct = AVDISCARD_ALL;
297 p_sys->p_context->skip_idct = AVDISCARD_NONE;
300 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
302 /* ***** ffmpeg direct rendering ***** */
303 p_sys->b_direct_rendering = false;
304 p_sys->i_direct_rendering_used = -1;
305 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
306 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
307 /* No idea why ... but this fixes flickering on some TSCC streams */
308 p_sys->i_codec_id != CODEC_ID_TSCC &&
309 /* avcodec native vp8 decode doesn't handle EMU_EDGE flag, and I
310 don't have idea howto implement fallback to libvpx decoder */
311 p_sys->i_codec_id != CODEC_ID_VP8 &&
312 !p_sys->p_context->debug_mv )
314 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
315 * so we need to do another check in ffmpeg_GetFrameBuf() */
316 p_sys->b_direct_rendering = true;
319 /* ffmpeg doesn't properly release old pictures when frames are skipped */
320 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
321 if( p_sys->b_direct_rendering )
323 msg_Dbg( p_dec, "trying to use direct rendering" );
324 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
328 msg_Dbg( p_dec, "direct rendering is disabled" );
331 /* Always use our get_buffer wrapper so we can calculate the
333 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
334 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
335 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
336 p_sys->p_context->opaque = p_dec;
338 #ifdef HAVE_AVCODEC_MT
339 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
340 if( i_thread_count <= 0 )
341 i_thread_count = vlc_GetCPUCount();
342 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
343 p_sys->p_context->thread_count = i_thread_count;
346 #ifdef HAVE_AVCODEC_VA
347 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
350 #ifdef HAVE_AVCODEC_MT
351 msg_Err( p_dec, "ffmpeg-hw is not compatible with ffmpeg-mt" );
353 p_sys->p_context->get_format = ffmpeg_GetFormat;
358 /* ***** misc init ***** */
359 p_sys->i_pts = VLC_TS_INVALID;
360 p_sys->b_has_b_frames = false;
361 p_sys->b_first_frame = true;
362 p_sys->b_flush = false;
363 p_sys->i_late_frames = 0;
365 /* Set output properties */
366 p_dec->fmt_out.i_cat = VIDEO_ES;
367 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
369 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
370 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
372 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
375 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
376 if( p_dec->fmt_in.video.p_palette )
378 p_sys->palette.palette_changed = 1;
380 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
386 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
387 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
388 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
389 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
391 p_sys->palette.palette[i] = c.u;
393 p_sys->p_context->palctrl = &p_sys->palette;
395 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
396 if( p_dec->fmt_out.video.p_palette )
397 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
399 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
401 p_sys->p_context->palctrl = &p_sys->palette;
404 /* ***** init this codec with special data ***** */
405 ffmpeg_InitCodec( p_dec );
407 /* ***** Open the codec ***** */
408 if( ffmpeg_OpenCodec( p_dec ) < 0 )
410 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
411 av_free( p_sys->p_ff_pic );
412 vlc_sem_destroy( &p_sys->sem_mt );
420 /*****************************************************************************
421 * DecodeVideo: Called to decode one or more frames
422 *****************************************************************************/
423 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
425 decoder_sys_t *p_sys = p_dec->p_sys;
426 AVCodecContext *p_context = p_sys->p_context;
428 int b_null_size = false;
431 if( !pp_block || !*pp_block )
434 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
436 ffmpeg_InitCodec( p_dec );
437 if( p_sys->b_delayed_open )
439 if( ffmpeg_OpenCodec( p_dec ) )
440 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
445 if( p_sys->b_delayed_open )
447 block_Release( p_block );
451 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
453 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
455 p_sys->i_late_frames = 0;
457 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
458 avcodec_flush_buffers( p_context );
460 block_Release( p_block );
464 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
466 /* Do not care about late frames when prerolling
467 * TODO avoid decoding of non reference frame
468 * (ie all B except for H264 where it depends only on nal_ref_idc) */
469 p_sys->i_late_frames = 0;
472 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
473 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
475 if( p_sys->i_pts > VLC_TS_INVALID )
477 msg_Err( p_dec, "more than 5 seconds of late video -> "
478 "dropping frame (computer too slow ?)" );
479 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
481 block_Release( p_block );
482 p_sys->i_late_frames--;
486 /* A good idea could be to decode all I pictures and see for the other */
487 if( !p_dec->b_pace_control &&
489 (p_sys->i_late_frames > 4) )
492 if( p_sys->i_late_frames < 12 )
494 p_context->skip_frame =
495 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
496 AVDISCARD_BIDIR : p_sys->i_skip_frame;
500 /* picture too late, won't decode
501 * but break picture until a new I, and for mpeg4 ...*/
502 p_sys->i_late_frames--; /* needed else it will never be decrease */
503 block_Release( p_block );
509 if( p_sys->b_hurry_up )
510 p_context->skip_frame = p_sys->i_skip_frame;
511 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
517 if( p_context->width <= 0 || p_context->height <= 0 )
519 if( p_sys->b_hurry_up )
520 p_context->skip_frame = p_sys->i_skip_frame;
523 else if( !b_drawpicture )
525 /* It creates broken picture
526 * FIXME either our parser or ffmpeg is broken */
528 if( p_sys->b_hurry_up )
529 p_context->skip_frame = __MAX( p_context->skip_frame,
535 * Do the actual decoding now */
537 /* Don't forget that ffmpeg requires a little more bytes
538 * that the real frame size */
539 if( p_block->i_buffer > 0 )
541 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
543 p_block = block_Realloc( p_block, 0,
544 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
547 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
549 memset( p_block->p_buffer + p_block->i_buffer, 0,
550 FF_INPUT_BUFFER_PADDING_SIZE );
553 while( p_block->i_buffer > 0 || p_sys->b_flush )
555 int i_used, b_gotpicture;
558 /* Set the PTS/DTS in the context reordered_opaque field */
559 if( p_block->i_pts > VLC_TS_INVALID )
560 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
561 else if( p_block->i_dts > VLC_TS_INVALID )
562 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
564 p_context->reordered_opaque = INT64_MIN;
565 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
567 /* Make sure we don't reuse the same timestamps twice */
569 p_block->i_dts = VLC_TS_INVALID;
573 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
575 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
577 if( b_null_size && !p_sys->b_flush &&
578 p_context->width > 0 && p_context->height > 0 )
580 /* Reparse it to not drop the I frame */
582 if( p_sys->b_hurry_up )
583 p_context->skip_frame = p_sys->i_skip_frame;
584 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
585 &b_gotpicture, p_block->p_buffer,
591 p_sys->b_first_frame = true;
593 if( p_block->i_buffer <= 0 )
594 p_sys->b_flush = false;
599 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
601 block_Release( p_block );
604 else if( i_used > p_block->i_buffer ||
605 p_context->thread_count > 1 )
607 i_used = p_block->i_buffer;
611 p_block->i_buffer -= i_used;
612 p_block->p_buffer += i_used;
614 /* Nothing to display */
617 if( i_used == 0 ) break;
621 /* Compute the PTS */
622 mtime_t i_pts = VLC_TS_INVALID;
623 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
625 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
626 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
629 if( !p_context->has_b_frames ||
630 !p_sys->b_has_b_frames ||
631 !p_sys->p_ff_pic->reference ||
632 p_sys->i_pts <= VLC_TS_INVALID )
640 if( i_pts <= VLC_TS_INVALID )
641 i_pts = p_sys->i_pts;
643 /* Interpolate the next PTS */
644 if( i_pts > VLC_TS_INVALID )
645 p_sys->i_pts = i_pts;
646 if( p_sys->i_pts > VLC_TS_INVALID )
648 /* interpolate the next PTS */
649 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
650 p_dec->fmt_in.video.i_frame_rate_base > 0 )
652 p_sys->i_pts += INT64_C(1000000) *
653 (2 + p_sys->p_ff_pic->repeat_pict) *
654 p_dec->fmt_in.video.i_frame_rate_base /
655 (2 * p_dec->fmt_in.video.i_frame_rate);
657 else if( p_context->time_base.den > 0 )
659 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
660 int i_tick = p_context->ticks_per_frame;
667 p_sys->i_pts += INT64_C(1000000) *
668 (2 + p_sys->p_ff_pic->repeat_pict) *
669 i_tick * p_context->time_base.num /
670 (2 * p_context->time_base.den);
674 /* Update frame late count (except when doing preroll) */
675 mtime_t i_display_date = 0;
676 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
677 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
679 if( i_display_date > 0 && i_display_date <= mdate() )
681 p_sys->i_late_frames++;
682 if( p_sys->i_late_frames == 1 )
683 p_sys->i_late_frames_start = mdate();
687 p_sys->i_late_frames = 0;
690 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
693 if( !p_sys->p_ff_pic->opaque )
695 /* Get a new picture */
696 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
699 block_Release( p_block );
703 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
705 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
709 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
710 decoder_LinkPicture( p_dec, p_pic );
713 /* Sanity check (seems to be needed for some streams) */
714 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
716 p_sys->b_has_b_frames = true;
719 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
721 /* Fetch again the aspect ratio in case it changed */
722 p_dec->fmt_out.video.i_sar_num
723 = p_context->sample_aspect_ratio.num;
724 p_dec->fmt_out.video.i_sar_den
725 = p_context->sample_aspect_ratio.den;
727 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
729 p_dec->fmt_out.video.i_sar_num = 1;
730 p_dec->fmt_out.video.i_sar_den = 1;
734 /* Send decoded frame to vout */
735 if( i_pts > VLC_TS_INVALID)
739 if( p_sys->b_first_frame )
741 /* Hack to force display of still pictures */
742 p_sys->b_first_frame = false;
743 p_pic->b_force = true;
746 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
747 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
748 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
750 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
751 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
752 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
753 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
754 p_pic->i_qstride * i_mb_h );
755 switch( p_sys->p_ff_pic->qscale_type )
757 case FF_QSCALE_TYPE_MPEG1:
758 p_pic->i_qtype = QTYPE_MPEG1;
760 case FF_QSCALE_TYPE_MPEG2:
761 p_pic->i_qtype = QTYPE_MPEG2;
763 case FF_QSCALE_TYPE_H264:
764 p_pic->i_qtype = QTYPE_H264;
772 decoder_DeletePicture( p_dec, p_pic );
776 block_Release( p_block );
780 /*****************************************************************************
781 * EndVideo: decoder destruction
782 *****************************************************************************
783 * This function is called when the thread ends after a successful
785 *****************************************************************************/
786 void EndVideoDec( decoder_t *p_dec )
788 decoder_sys_t *p_sys = p_dec->p_sys;
792 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
793 if( p_sys->p_context->codec )
794 avcodec_flush_buffers( p_sys->p_context );
798 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
802 vlc_va_Delete( p_sys->p_va );
805 vlc_sem_destroy( &p_sys->sem_mt );
808 /*****************************************************************************
809 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
810 *****************************************************************************/
811 static void ffmpeg_InitCodec( decoder_t *p_dec )
813 decoder_sys_t *p_sys = p_dec->p_sys;
814 int i_size = p_dec->fmt_in.i_extra;
816 if( !i_size ) return;
818 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
822 p_sys->p_context->extradata_size = i_size + 12;
823 p = p_sys->p_context->extradata =
824 malloc( p_sys->p_context->extradata_size );
828 memcpy( &p[0], "SVQ3", 4 );
829 memset( &p[4], 0, 8 );
830 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
832 /* Now remove all atoms before the SMI one */
833 if( p_sys->p_context->extradata_size > 0x5a &&
834 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
836 uint8_t *psz = &p[0x52];
838 while( psz < &p[p_sys->p_context->extradata_size - 8] )
840 int i_size = GetDWBE( psz );
843 /* FIXME handle 1 as long size */
846 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
848 memmove( &p[0x52], psz,
849 &p[p_sys->p_context->extradata_size] - psz );
859 p_sys->p_context->extradata_size = i_size;
860 p_sys->p_context->extradata =
861 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
862 if( p_sys->p_context->extradata )
864 memcpy( p_sys->p_context->extradata,
865 p_dec->fmt_in.p_extra, i_size );
866 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
867 0, FF_INPUT_BUFFER_PADDING_SIZE );
872 /*****************************************************************************
874 *****************************************************************************/
875 static int ffmpeg_OpenCodec( decoder_t *p_dec )
877 decoder_sys_t *p_sys = p_dec->p_sys;
879 if( p_sys->p_context->extradata_size <= 0 )
881 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
882 p_sys->i_codec_id == CODEC_ID_VORBIS ||
883 p_sys->i_codec_id == CODEC_ID_THEORA )
885 msg_Warn( p_dec, "waiting for extra data for codec %s",
886 p_sys->psz_namecodec );
890 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
891 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
892 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
896 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
897 vlc_avcodec_unlock();
900 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
901 #ifdef HAVE_AVCODEC_MT
902 switch( p_sys->p_context->active_thread_type )
904 case FF_THREAD_FRAME:
905 msg_Dbg( p_dec, "using frame thread mode with %d threads",
906 p_sys->p_context->thread_count );
908 case FF_THREAD_SLICE:
909 msg_Dbg( p_dec, "using slice thread mode with %d threads",
910 p_sys->p_context->thread_count );
913 if( p_sys->p_context->thread_count > 1 )
914 msg_Warn( p_dec, "failed to enable threaded decoding" );
917 msg_Warn( p_dec, "using unknown thread mode with %d threads",
918 p_sys->p_context->thread_count );
923 p_sys->b_delayed_open = false;
927 /*****************************************************************************
928 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
929 * picture_t structure (when not in direct rendering mode).
930 *****************************************************************************/
931 static void ffmpeg_CopyPicture( decoder_t *p_dec,
932 picture_t *p_pic, AVFrame *p_ff_pic )
934 decoder_sys_t *p_sys = p_dec->p_sys;
938 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
940 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
942 int i_plane, i_size, i_line;
943 uint8_t *p_dst, *p_src;
944 int i_src_stride, i_dst_stride;
946 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
948 p_src = p_ff_pic->data[i_plane];
949 p_dst = p_pic->p[i_plane].p_pixels;
950 i_src_stride = p_ff_pic->linesize[i_plane];
951 i_dst_stride = p_pic->p[i_plane].i_pitch;
953 i_size = __MIN( i_src_stride, i_dst_stride );
954 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
957 vlc_memcpy( p_dst, p_src, i_size );
958 p_src += i_src_stride;
959 p_dst += i_dst_stride;
965 msg_Err( p_dec, "don't know how to convert chroma %i",
966 p_sys->p_context->pix_fmt );
971 /*****************************************************************************
972 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
973 *****************************************************************************
974 * It is used for direct rendering as well as to get the right PTS for each
975 * decoded picture (even in indirect rendering mode).
976 *****************************************************************************/
977 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
980 decoder_t *p_dec = (decoder_t *)p_context->opaque;
981 decoder_sys_t *p_sys = p_dec->p_sys;
985 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
986 p_ff_pic->opaque = NULL;
990 #ifdef HAVE_AVCODEC_VA
991 /* hwaccel_context is not present in old fffmpeg version */
992 if( vlc_va_Setup( p_sys->p_va,
993 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
994 p_sys->p_context->width, p_sys->p_context->height ) )
996 msg_Err( p_dec, "vlc_va_Setup failed" );
1004 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1005 /* FIXME what is that, should give good value */
1006 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
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 );
1023 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1024 * so we need to check for direct rendering again. */
1026 int i_width = p_sys->p_context->width;
1027 int i_height = p_sys->p_context->height;
1028 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
1030 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1031 p_context->pix_fmt == PIX_FMT_PAL8 )
1034 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1036 /* Get a new picture */
1037 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
1040 bool b_compatible = true;
1041 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1042 p_pic->p[0].i_lines < i_height )
1043 b_compatible = false;
1044 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1047 switch( p_sys->i_codec_id )
1057 i_align = i == 0 ? 16 : 8;
1060 if( p_pic->p[i].i_pitch % i_align )
1061 b_compatible = false;
1062 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1063 b_compatible = false;
1065 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1067 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1068 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1069 b_compatible = false;
1073 decoder_DeletePicture( p_dec, p_pic );
1077 if( p_sys->i_direct_rendering_used != 1 )
1079 msg_Dbg( p_dec, "using direct rendering" );
1080 p_sys->i_direct_rendering_used = 1;
1083 p_sys->p_context->draw_horiz_band = NULL;
1085 p_ff_pic->opaque = (void*)p_pic;
1086 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1087 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1088 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1089 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1090 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1092 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1093 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1094 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1095 p_ff_pic->linesize[3] = 0;
1097 /* FIXME what is that, should give good value */
1098 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
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_codec,
1151 const enum PixelFormat *pi_fmt )
1153 decoder_t *p_dec = p_codec->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 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1174 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1176 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1178 /* Only VLD supported */
1179 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1181 if( !var_InheritBool( p_dec, "xlib" ) )
1183 msg_Warn( p_dec, "Ignoring VA API" );
1186 #ifdef HAVE_AVCODEC_VAAPI
1187 msg_Dbg( p_dec, "Trying VA API" );
1188 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1190 msg_Warn( p_dec, "Failed to open VA API" );
1195 #ifdef HAVE_AVCODEC_DXVA2
1196 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1198 msg_Dbg( p_dec, "Trying DXVA2" );
1199 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1201 msg_Warn( p_dec, "Failed to open DXVA2" );
1206 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1208 /* We try to call vlc_va_Setup when possible to detect errors when
1209 * possible (later is too late) */
1210 if( vlc_va_Setup( p_sys->p_va,
1211 &p_sys->p_context->hwaccel_context,
1212 &p_dec->fmt_out.video.i_chroma,
1213 p_sys->p_context->width, p_sys->p_context->height ) )
1215 msg_Err( p_dec, "vlc_va_Setup failed" );
1216 vlc_va_Delete( p_sys->p_va );
1223 if( p_sys->p_va->description )
1224 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1226 /* FIXME this will disabled direct rendering
1227 * even if a new pixel format is renegociated
1229 p_sys->b_direct_rendering = false;
1230 p_sys->p_context->draw_horiz_band = NULL;
1235 /* Fallback to default behaviour */
1236 return avcodec_default_get_format( p_codec, pi_fmt );