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 !p_sys->p_context->debug_mv )
311 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
312 * so we need to do another check in ffmpeg_GetFrameBuf() */
313 p_sys->b_direct_rendering = true;
316 /* ffmpeg doesn't properly release old pictures when frames are skipped */
317 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
318 if( p_sys->b_direct_rendering )
320 msg_Dbg( p_dec, "trying to use direct rendering" );
321 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
325 msg_Dbg( p_dec, "direct rendering is disabled" );
328 /* Always use our get_buffer wrapper so we can calculate the
330 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
331 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
332 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
333 p_sys->p_context->opaque = p_dec;
335 #ifdef HAVE_AVCODEC_MT
336 int i_thread_count = var_InheritInteger( p_dec, "ffmpeg-threads" );
337 if( i_thread_count <= 0 )
338 i_thread_count = vlc_GetCPUCount();
339 msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count );
340 p_sys->p_context->thread_count = i_thread_count;
343 #ifdef HAVE_AVCODEC_VA
344 const bool b_use_hw = var_CreateGetBool( p_dec, "ffmpeg-hw" );
347 #ifdef HAVE_AVCODEC_MT
348 msg_Err( p_dec, "ffmpeg-hw is not compatible with ffmpeg-mt" );
350 p_sys->p_context->get_format = ffmpeg_GetFormat;
355 /* ***** misc init ***** */
356 p_sys->i_pts = VLC_TS_INVALID;
357 p_sys->b_has_b_frames = false;
358 p_sys->b_first_frame = true;
359 p_sys->b_flush = false;
360 p_sys->i_late_frames = 0;
362 /* Set output properties */
363 p_dec->fmt_out.i_cat = VIDEO_ES;
364 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
366 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
367 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
369 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
372 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
373 if( p_dec->fmt_in.video.p_palette )
375 p_sys->palette.palette_changed = 1;
377 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
383 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
384 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
385 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
386 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
388 p_sys->palette.palette[i] = c.u;
390 p_sys->p_context->palctrl = &p_sys->palette;
392 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
393 if( p_dec->fmt_out.video.p_palette )
394 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
396 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
398 p_sys->p_context->palctrl = &p_sys->palette;
401 /* ***** init this codec with special data ***** */
402 ffmpeg_InitCodec( p_dec );
404 /* ***** Open the codec ***** */
405 if( ffmpeg_OpenCodec( p_dec ) < 0 )
407 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
408 av_free( p_sys->p_ff_pic );
409 vlc_sem_destroy( &p_sys->sem_mt );
417 /*****************************************************************************
418 * DecodeVideo: Called to decode one or more frames
419 *****************************************************************************/
420 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
422 decoder_sys_t *p_sys = p_dec->p_sys;
423 AVCodecContext *p_context = p_sys->p_context;
425 int b_null_size = false;
428 if( !pp_block || !*pp_block )
431 if( !p_context->extradata_size && p_dec->fmt_in.i_extra )
433 ffmpeg_InitCodec( p_dec );
434 if( p_sys->b_delayed_open )
436 if( ffmpeg_OpenCodec( p_dec ) )
437 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
442 if( p_sys->b_delayed_open )
444 block_Release( p_block );
448 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
450 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
452 p_sys->i_late_frames = 0;
454 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
455 avcodec_flush_buffers( p_context );
457 block_Release( p_block );
461 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
463 /* Do not care about late frames when prerolling
464 * TODO avoid decoding of non reference frame
465 * (ie all B except for H264 where it depends only on nal_ref_idc) */
466 p_sys->i_late_frames = 0;
469 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
470 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
472 if( p_sys->i_pts > VLC_TS_INVALID )
474 msg_Err( p_dec, "more than 5 seconds of late video -> "
475 "dropping frame (computer too slow ?)" );
476 p_sys->i_pts = VLC_TS_INVALID; /* To make sure we recover properly */
478 block_Release( p_block );
479 p_sys->i_late_frames--;
483 /* A good idea could be to decode all I pictures and see for the other */
484 if( !p_dec->b_pace_control &&
486 (p_sys->i_late_frames > 4) )
489 if( p_sys->i_late_frames < 12 )
491 p_context->skip_frame =
492 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
493 AVDISCARD_BIDIR : p_sys->i_skip_frame;
497 /* picture too late, won't decode
498 * but break picture until a new I, and for mpeg4 ...*/
499 p_sys->i_late_frames--; /* needed else it will never be decrease */
500 block_Release( p_block );
506 if( p_sys->b_hurry_up )
507 p_context->skip_frame = p_sys->i_skip_frame;
508 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
514 if( p_context->width <= 0 || p_context->height <= 0 )
516 if( p_sys->b_hurry_up )
517 p_context->skip_frame = p_sys->i_skip_frame;
520 else if( !b_drawpicture )
522 /* It creates broken picture
523 * FIXME either our parser or ffmpeg is broken */
525 if( p_sys->b_hurry_up )
526 p_context->skip_frame = __MAX( p_context->skip_frame,
532 * Do the actual decoding now */
534 /* Don't forget that ffmpeg requires a little more bytes
535 * that the real frame size */
536 if( p_block->i_buffer > 0 )
538 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
540 p_block = block_Realloc( p_block, 0,
541 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
544 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
546 memset( p_block->p_buffer + p_block->i_buffer, 0,
547 FF_INPUT_BUFFER_PADDING_SIZE );
550 while( p_block->i_buffer > 0 || p_sys->b_flush )
552 int i_used, b_gotpicture;
555 /* Set the PTS/DTS in the context reordered_opaque field */
556 if( p_block->i_pts > VLC_TS_INVALID )
557 p_context->reordered_opaque = (p_block->i_pts << 1) | 0;
558 else if( p_block->i_dts > VLC_TS_INVALID )
559 p_context->reordered_opaque = (p_block->i_dts << 1) | 1;
561 p_context->reordered_opaque = INT64_MIN;
562 p_sys->p_ff_pic->reordered_opaque = p_context->reordered_opaque;
564 /* Make sure we don't reuse the same timestamps twice */
566 p_block->i_dts = VLC_TS_INVALID;
570 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
572 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
574 if( b_null_size && !p_sys->b_flush &&
575 p_context->width > 0 && p_context->height > 0 )
577 /* Reparse it to not drop the I frame */
579 if( p_sys->b_hurry_up )
580 p_context->skip_frame = p_sys->i_skip_frame;
581 i_used = avcodec_decode_video( p_context, p_sys->p_ff_pic,
582 &b_gotpicture, p_block->p_buffer,
588 p_sys->b_first_frame = true;
590 if( p_block->i_buffer <= 0 )
591 p_sys->b_flush = false;
596 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
598 block_Release( p_block );
601 else if( i_used > p_block->i_buffer ||
602 p_context->thread_count > 1 )
604 i_used = p_block->i_buffer;
608 p_block->i_buffer -= i_used;
609 p_block->p_buffer += i_used;
611 /* Nothing to display */
614 if( i_used == 0 ) break;
618 /* Compute the PTS */
619 mtime_t i_pts = VLC_TS_INVALID;
620 if( p_sys->p_ff_pic->reordered_opaque != INT64_MIN )
622 mtime_t i_ts = p_sys->p_ff_pic->reordered_opaque >> 1;
623 bool b_dts = p_sys->p_ff_pic->reordered_opaque & 1;
626 if( !p_context->has_b_frames ||
627 !p_sys->b_has_b_frames ||
628 !p_sys->p_ff_pic->reference ||
629 p_sys->i_pts <= VLC_TS_INVALID )
637 if( i_pts <= VLC_TS_INVALID )
638 i_pts = p_sys->i_pts;
640 /* Interpolate the next PTS */
641 if( i_pts > VLC_TS_INVALID )
642 p_sys->i_pts = i_pts;
643 if( p_sys->i_pts > VLC_TS_INVALID )
645 /* interpolate the next PTS */
646 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
647 p_dec->fmt_in.video.i_frame_rate_base > 0 )
649 p_sys->i_pts += INT64_C(1000000) *
650 (2 + p_sys->p_ff_pic->repeat_pict) *
651 p_dec->fmt_in.video.i_frame_rate_base /
652 (2 * p_dec->fmt_in.video.i_frame_rate);
654 else if( p_context->time_base.den > 0 )
656 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
657 int i_tick = p_context->ticks_per_frame;
664 p_sys->i_pts += INT64_C(1000000) *
665 (2 + p_sys->p_ff_pic->repeat_pict) *
666 i_tick * p_context->time_base.num /
667 (2 * p_context->time_base.den);
671 /* Update frame late count (except when doing preroll) */
672 mtime_t i_display_date = 0;
673 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
674 i_display_date = decoder_GetDisplayDate( p_dec, i_pts );
676 if( i_display_date > 0 && i_display_date <= mdate() )
678 p_sys->i_late_frames++;
679 if( p_sys->i_late_frames == 1 )
680 p_sys->i_late_frames_start = mdate();
684 p_sys->i_late_frames = 0;
687 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
690 if( !p_sys->p_ff_pic->opaque )
692 /* Get a new picture */
693 p_pic = ffmpeg_NewPictBuf( p_dec, p_context );
696 block_Release( p_block );
700 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
702 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
706 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
707 decoder_LinkPicture( p_dec, p_pic );
710 /* Sanity check (seems to be needed for some streams) */
711 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
713 p_sys->b_has_b_frames = true;
716 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
718 /* Fetch again the aspect ratio in case it changed */
719 p_dec->fmt_out.video.i_sar_num
720 = p_context->sample_aspect_ratio.num;
721 p_dec->fmt_out.video.i_sar_den
722 = p_context->sample_aspect_ratio.den;
724 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
726 p_dec->fmt_out.video.i_sar_num = 1;
727 p_dec->fmt_out.video.i_sar_den = 1;
731 /* Send decoded frame to vout */
732 if( i_pts > VLC_TS_INVALID)
736 if( p_sys->b_first_frame )
738 /* Hack to force display of still pictures */
739 p_sys->b_first_frame = false;
740 p_pic->b_force = true;
743 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
744 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
745 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
747 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
748 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
749 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
750 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
751 p_pic->i_qstride * i_mb_h );
752 switch( p_sys->p_ff_pic->qscale_type )
754 case FF_QSCALE_TYPE_MPEG1:
755 p_pic->i_qtype = QTYPE_MPEG1;
757 case FF_QSCALE_TYPE_MPEG2:
758 p_pic->i_qtype = QTYPE_MPEG2;
760 case FF_QSCALE_TYPE_H264:
761 p_pic->i_qtype = QTYPE_H264;
769 decoder_DeletePicture( p_dec, p_pic );
773 block_Release( p_block );
777 /*****************************************************************************
778 * EndVideo: decoder destruction
779 *****************************************************************************
780 * This function is called when the thread ends after a successful
782 *****************************************************************************/
783 void EndVideoDec( decoder_t *p_dec )
785 decoder_sys_t *p_sys = p_dec->p_sys;
789 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
790 if( p_sys->p_context->codec )
791 avcodec_flush_buffers( p_sys->p_context );
795 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
799 vlc_va_Delete( p_sys->p_va );
802 vlc_sem_destroy( &p_sys->sem_mt );
805 /*****************************************************************************
806 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
807 *****************************************************************************/
808 static void ffmpeg_InitCodec( decoder_t *p_dec )
810 decoder_sys_t *p_sys = p_dec->p_sys;
811 int i_size = p_dec->fmt_in.i_extra;
813 if( !i_size ) return;
815 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
819 p_sys->p_context->extradata_size = i_size + 12;
820 p = p_sys->p_context->extradata =
821 malloc( p_sys->p_context->extradata_size );
825 memcpy( &p[0], "SVQ3", 4 );
826 memset( &p[4], 0, 8 );
827 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
829 /* Now remove all atoms before the SMI one */
830 if( p_sys->p_context->extradata_size > 0x5a &&
831 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
833 uint8_t *psz = &p[0x52];
835 while( psz < &p[p_sys->p_context->extradata_size - 8] )
837 int i_size = GetDWBE( psz );
840 /* FIXME handle 1 as long size */
843 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
845 memmove( &p[0x52], psz,
846 &p[p_sys->p_context->extradata_size] - psz );
856 p_sys->p_context->extradata_size = i_size;
857 p_sys->p_context->extradata =
858 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
859 if( p_sys->p_context->extradata )
861 memcpy( p_sys->p_context->extradata,
862 p_dec->fmt_in.p_extra, i_size );
863 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
864 0, FF_INPUT_BUFFER_PADDING_SIZE );
869 /*****************************************************************************
871 *****************************************************************************/
872 static int ffmpeg_OpenCodec( decoder_t *p_dec )
874 decoder_sys_t *p_sys = p_dec->p_sys;
876 if( p_sys->p_context->extradata_size <= 0 )
878 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
879 p_sys->i_codec_id == CODEC_ID_VORBIS ||
880 p_sys->i_codec_id == CODEC_ID_THEORA )
882 msg_Warn( p_dec, "waiting for extra data for codec %s",
883 p_sys->psz_namecodec );
887 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
888 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
889 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
893 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
894 vlc_avcodec_unlock();
897 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
898 #ifdef HAVE_AVCODEC_MT
899 switch( p_sys->p_context->active_thread_type )
901 case FF_THREAD_FRAME:
902 msg_Dbg( p_dec, "using frame thread mode with %d threads",
903 p_sys->p_context->thread_count );
905 case FF_THREAD_SLICE:
906 msg_Dbg( p_dec, "using slice thread mode with %d threads",
907 p_sys->p_context->thread_count );
910 if( p_sys->p_context->thread_count > 1 )
911 msg_Warn( p_dec, "failed to enable threaded decoding" );
914 msg_Warn( p_dec, "using unknown thread mode with %d threads",
915 p_sys->p_context->thread_count );
920 p_sys->b_delayed_open = false;
924 /*****************************************************************************
925 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
926 * picture_t structure (when not in direct rendering mode).
927 *****************************************************************************/
928 static void ffmpeg_CopyPicture( decoder_t *p_dec,
929 picture_t *p_pic, AVFrame *p_ff_pic )
931 decoder_sys_t *p_sys = p_dec->p_sys;
935 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
937 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
939 int i_plane, i_size, i_line;
940 uint8_t *p_dst, *p_src;
941 int i_src_stride, i_dst_stride;
943 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
945 p_src = p_ff_pic->data[i_plane];
946 p_dst = p_pic->p[i_plane].p_pixels;
947 i_src_stride = p_ff_pic->linesize[i_plane];
948 i_dst_stride = p_pic->p[i_plane].i_pitch;
950 i_size = __MIN( i_src_stride, i_dst_stride );
951 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
954 vlc_memcpy( p_dst, p_src, i_size );
955 p_src += i_src_stride;
956 p_dst += i_dst_stride;
962 msg_Err( p_dec, "don't know how to convert chroma %i",
963 p_sys->p_context->pix_fmt );
968 /*****************************************************************************
969 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
970 *****************************************************************************
971 * It is used for direct rendering as well as to get the right PTS for each
972 * decoded picture (even in indirect rendering mode).
973 *****************************************************************************/
974 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
977 decoder_t *p_dec = (decoder_t *)p_context->opaque;
978 decoder_sys_t *p_sys = p_dec->p_sys;
982 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
983 p_ff_pic->opaque = NULL;
987 #ifdef HAVE_AVCODEC_VA
988 /* hwaccel_context is not present in old fffmpeg version */
989 if( vlc_va_Setup( p_sys->p_va,
990 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
991 p_sys->p_context->width, p_sys->p_context->height ) )
993 msg_Err( p_dec, "vlc_va_Setup failed" );
1001 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1002 /* FIXME what is that, should give good value */
1003 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1005 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
1007 msg_Err( p_dec, "VaGrabSurface failed" );
1012 else if( !p_sys->b_direct_rendering )
1014 /* Not much to do in indirect rendering mode. */
1015 return avcodec_default_get_buffer( p_context, p_ff_pic );
1020 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
1021 * so we need to check for direct rendering again. */
1023 int i_width = p_sys->p_context->width;
1024 int i_height = p_sys->p_context->height;
1025 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
1027 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
1028 p_context->pix_fmt == PIX_FMT_PAL8 )
1031 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
1033 /* Get a new picture */
1034 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
1037 bool b_compatible = true;
1038 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
1039 p_pic->p[0].i_lines < i_height )
1040 b_compatible = false;
1041 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
1044 switch( p_sys->i_codec_id )
1054 i_align = i == 0 ? 16 : 8;
1057 if( p_pic->p[i].i_pitch % i_align )
1058 b_compatible = false;
1059 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
1060 b_compatible = false;
1062 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
1064 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
1065 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
1066 b_compatible = false;
1070 decoder_DeletePicture( p_dec, p_pic );
1074 if( p_sys->i_direct_rendering_used != 1 )
1076 msg_Dbg( p_dec, "using direct rendering" );
1077 p_sys->i_direct_rendering_used = 1;
1080 p_sys->p_context->draw_horiz_band = NULL;
1082 p_ff_pic->opaque = (void*)p_pic;
1083 p_ff_pic->type = FF_BUFFER_TYPE_USER;
1084 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
1085 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
1086 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
1087 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
1089 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
1090 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1091 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1092 p_ff_pic->linesize[3] = 0;
1094 /* FIXME what is that, should give good value */
1095 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1101 if( p_sys->i_direct_rendering_used != 0 )
1103 msg_Warn( p_dec, "disabling direct rendering" );
1104 p_sys->i_direct_rendering_used = 0;
1107 return avcodec_default_get_buffer( p_context, p_ff_pic );
1109 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1111 p_ff_pic->reordered_opaque = p_context->reordered_opaque;
1113 /* We always use default reget function, it works perfectly fine */
1114 return avcodec_default_reget_buffer( p_context, p_ff_pic );
1117 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1120 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1121 decoder_sys_t *p_sys = p_dec->p_sys;
1125 vlc_va_Release( p_sys->p_va, p_ff_pic );
1127 else if( !p_ff_pic->opaque )
1129 /* We can end up here without the AVFrame being allocated by
1130 * avcodec_default_get_buffer() if VA is used and the frame is
1131 * released when the decoder is closed
1133 if( p_ff_pic->type == FF_BUFFER_TYPE_INTERNAL )
1134 avcodec_default_release_buffer( p_context, p_ff_pic );
1138 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1140 decoder_UnlinkPicture( p_dec, p_pic );
1142 for( int i = 0; i < 4; i++ )
1143 p_ff_pic->data[i] = NULL;
1146 #ifdef HAVE_AVCODEC_VA
1147 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1148 const enum PixelFormat *pi_fmt )
1150 decoder_t *p_dec = p_codec->opaque;
1151 decoder_sys_t *p_sys = p_dec->p_sys;
1155 vlc_va_Delete( p_sys->p_va );
1159 /* Try too look for a supported hw acceleration */
1160 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1162 static const char *ppsz_name[PIX_FMT_NB] = {
1163 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1164 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1165 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1166 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1167 #ifdef HAVE_AVCODEC_DXVA2
1168 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1170 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1171 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1173 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1175 /* Only VLD supported */
1176 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1178 if( !var_InheritBool( p_dec, "xlib" ) )
1180 msg_Warn( p_dec, "Ignoring VA API" );
1183 #ifdef HAVE_AVCODEC_VAAPI
1184 msg_Dbg( p_dec, "Trying VA API" );
1185 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1187 msg_Warn( p_dec, "Failed to open VA API" );
1192 #ifdef HAVE_AVCODEC_DXVA2
1193 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1195 msg_Dbg( p_dec, "Trying DXVA2" );
1196 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1198 msg_Warn( p_dec, "Failed to open DXVA2" );
1203 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1205 /* We try to call vlc_va_Setup when possible to detect errors when
1206 * possible (later is too late) */
1207 if( vlc_va_Setup( p_sys->p_va,
1208 &p_sys->p_context->hwaccel_context,
1209 &p_dec->fmt_out.video.i_chroma,
1210 p_sys->p_context->width, p_sys->p_context->height ) )
1212 msg_Err( p_dec, "vlc_va_Setup failed" );
1213 vlc_va_Delete( p_sys->p_va );
1220 if( p_sys->p_va->description )
1221 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1223 /* FIXME this will disabled direct rendering
1224 * even if a new pixel format is renegociated
1226 p_sys->b_direct_rendering = false;
1227 p_sys->p_context->draw_horiz_band = NULL;
1232 /* Fallback to default behaviour */
1233 return avcodec_default_get_format( p_codec, pi_fmt );