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>
38 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
39 # include <libavcodec/avcodec.h>
40 # ifdef HAVE_AVCODEC_VAAPI
41 # include <libavcodec/vaapi.h>
43 # ifdef HAVE_AVCODEC_DXVA2
44 # include <libavcodec/dxva2.h>
46 #elif defined(HAVE_FFMPEG_AVCODEC_H)
47 # include <ffmpeg/avcodec.h>
54 #if defined(HAVE_AVCODEC_VAAPI) || defined(HAVE_AVCODEC_DXVA2)
55 # define HAVE_AVCODEC_VA
58 /*****************************************************************************
59 * decoder_sys_t : decoder descriptor
60 *****************************************************************************/
65 /* Video decoder specific part */
72 /* for frame skipping algo */
74 enum AVDiscard i_skip_frame;
75 enum AVDiscard i_skip_idct;
77 /* how many decoded frames are late */
79 mtime_t i_late_frames_start;
81 /* for direct rendering */
82 bool b_direct_rendering;
83 int i_direct_rendering_used;
87 /* Hack to force display of still pictures */
91 AVPaletteControl palette;
100 /* FIXME (dummy palette for now) */
101 static const AVPaletteControl palette_control;
103 /*****************************************************************************
105 *****************************************************************************/
106 static void ffmpeg_InitCodec ( decoder_t * );
107 static int ffmpeg_OpenCodec ( decoder_t * );
108 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
109 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
110 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
111 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
112 static void ffmpeg_NextPts( decoder_t * );
114 #ifdef HAVE_AVCODEC_VA
115 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
116 const enum PixelFormat * );
119 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
121 uint8_t *p = (uint8_t*)&fcc;
122 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
125 /*****************************************************************************
127 *****************************************************************************/
129 /* Returns a new picture buffer */
130 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
131 AVCodecContext *p_context )
133 decoder_sys_t *p_sys = p_dec->p_sys;
135 p_dec->fmt_out.video.i_width = p_context->width;
136 p_dec->fmt_out.video.i_height = p_context->height;
138 if( !p_context->width || !p_context->height )
140 return NULL; /* invalid display size */
143 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
145 /* we are doomed, but not really, because most codecs set their pix_fmt
147 * FIXME does it make sense here ? */
148 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
150 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
152 /* If an aspect-ratio was specified in the input format then force it */
153 if( p_dec->fmt_in.video.i_sar_num > 0 && p_dec->fmt_in.video.i_sar_den > 0 )
155 p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
156 p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
160 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
161 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
163 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
165 p_dec->fmt_out.video.i_sar_num = 1;
166 p_dec->fmt_out.video.i_sar_den = 1;
170 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
171 p_dec->fmt_in.video.i_frame_rate_base > 0 )
173 p_dec->fmt_out.video.i_frame_rate =
174 p_dec->fmt_in.video.i_frame_rate;
175 p_dec->fmt_out.video.i_frame_rate_base =
176 p_dec->fmt_in.video.i_frame_rate_base;
178 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
180 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
181 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
184 return decoder_NewPicture( p_dec );
187 /*****************************************************************************
188 * InitVideo: initialize the video decoder
189 *****************************************************************************
190 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
191 * opened (done after the first decoded frame).
192 *****************************************************************************/
193 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
194 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
196 decoder_sys_t *p_sys;
199 /* Allocate the memory needed to store the decoder's structure */
200 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
203 p_codec->type = CODEC_TYPE_VIDEO;
204 p_context->codec_type = CODEC_TYPE_VIDEO;
205 p_context->codec_id = i_codec_id;
206 p_sys->p_context = p_context;
207 p_sys->p_codec = p_codec;
208 p_sys->i_codec_id = i_codec_id;
209 p_sys->psz_namecodec = psz_namecodec;
210 p_sys->p_ff_pic = avcodec_alloc_frame();
211 p_sys->b_delayed_open = true;
214 /* ***** Fill p_context with init values ***** */
215 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
217 /* ***** Get configuration of ffmpeg plugin ***** */
218 p_sys->p_context->workaround_bugs =
219 var_InheritInteger( p_dec, "ffmpeg-workaround-bugs" );
220 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 0, 0 )
221 p_sys->p_context->error_resilience =
222 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
224 p_sys->p_context->error_recognition =
225 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
228 if( var_CreateGetBool( p_dec, "grayscale" ) )
229 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
231 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
232 if( i_val ) p_sys->p_context->debug_mv = i_val;
234 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
235 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
237 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
238 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
239 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
240 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
241 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
243 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
244 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
246 /* ***** ffmpeg frame skipping ***** */
247 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
249 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
252 p_sys->p_context->skip_frame = AVDISCARD_NONE;
255 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
258 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
261 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
264 p_sys->p_context->skip_frame = AVDISCARD_ALL;
267 p_sys->p_context->skip_frame = AVDISCARD_NONE;
270 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
272 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
275 p_sys->p_context->skip_idct = AVDISCARD_NONE;
278 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
281 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
284 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
287 p_sys->p_context->skip_idct = AVDISCARD_ALL;
290 p_sys->p_context->skip_idct = AVDISCARD_NONE;
293 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
295 /* ***** ffmpeg direct rendering ***** */
296 p_sys->b_direct_rendering = false;
297 p_sys->i_direct_rendering_used = -1;
298 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
299 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
300 /* No idea why ... but this fixes flickering on some TSCC streams */
301 p_sys->i_codec_id != CODEC_ID_TSCC &&
302 !p_sys->p_context->debug_mv )
304 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
305 * so we need to do another check in ffmpeg_GetFrameBuf() */
306 p_sys->b_direct_rendering = true;
309 /* ffmpeg doesn't properly release old pictures when frames are skipped */
310 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
311 if( p_sys->b_direct_rendering )
313 msg_Dbg( p_dec, "trying to use direct rendering" );
314 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
318 msg_Dbg( p_dec, "direct rendering is disabled" );
321 /* Always use our get_buffer wrapper so we can calculate the
323 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
324 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
325 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
326 p_sys->p_context->opaque = p_dec;
328 #ifdef HAVE_AVCODEC_VA
329 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
330 p_sys->p_context->get_format = ffmpeg_GetFormat;
333 /* ***** misc init ***** */
334 p_sys->input_pts = p_sys->input_dts = 0;
336 p_sys->b_has_b_frames = false;
337 p_sys->b_first_frame = true;
338 p_sys->b_flush = false;
339 p_sys->i_late_frames = 0;
341 /* Set output properties */
342 p_dec->fmt_out.i_cat = VIDEO_ES;
343 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
345 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
346 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
348 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
351 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
352 if( p_dec->fmt_in.video.p_palette )
354 p_sys->palette.palette_changed = 1;
356 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
362 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
363 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
364 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
365 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
367 p_sys->palette.palette[i] = c.u;
369 p_sys->p_context->palctrl = &p_sys->palette;
371 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
372 if( p_dec->fmt_out.video.p_palette )
373 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
375 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
377 p_sys->p_context->palctrl = &p_sys->palette;
380 /* ***** init this codec with special data ***** */
381 ffmpeg_InitCodec( p_dec );
383 /* ***** Open the codec ***** */
384 if( ffmpeg_OpenCodec( p_dec ) < 0 )
386 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
387 av_free( p_sys->p_ff_pic );
395 /*****************************************************************************
396 * DecodeVideo: Called to decode one or more frames
397 *****************************************************************************/
398 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
400 decoder_sys_t *p_sys = p_dec->p_sys;
402 int b_null_size = false;
405 if( !pp_block || !*pp_block )
408 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
410 ffmpeg_InitCodec( p_dec );
411 if( p_sys->b_delayed_open )
413 if( ffmpeg_OpenCodec( p_dec ) )
414 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
419 if( p_sys->b_delayed_open )
421 block_Release( p_block );
425 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
427 p_sys->i_pts = 0; /* To make sure we recover properly */
429 p_sys->input_pts = p_sys->input_dts = 0;
430 p_sys->i_late_frames = 0;
432 block_Release( p_block );
434 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
435 //avcodec_flush_buffers( p_sys->p_context );
439 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
441 /* Do not care about late frames when prerolling
442 * TODO avoid decoding of non reference frame
443 * (ie all B except for H264 where it depends only on nal_ref_idc) */
444 p_sys->i_late_frames = 0;
447 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
448 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
452 msg_Err( p_dec, "more than 5 seconds of late video -> "
453 "dropping frame (computer too slow ?)" );
454 p_sys->i_pts = 0; /* To make sure we recover properly */
456 block_Release( p_block );
457 p_sys->i_late_frames--;
461 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
463 p_sys->input_pts = p_block->i_pts;
464 p_sys->input_dts = p_block->i_dts;
466 /* Make sure we don't reuse the same timestamps twice */
467 p_block->i_pts = p_block->i_dts = 0;
470 /* A good idea could be to decode all I pictures and see for the other */
471 if( !p_dec->b_pace_control &&
473 (p_sys->i_late_frames > 4) )
476 if( p_sys->i_late_frames < 12 )
478 p_sys->p_context->skip_frame =
479 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
480 AVDISCARD_BIDIR : p_sys->i_skip_frame;
484 /* picture too late, won't decode
485 * but break picture until a new I, and for mpeg4 ...*/
486 p_sys->i_late_frames--; /* needed else it will never be decrease */
487 block_Release( p_block );
493 if( p_sys->b_hurry_up )
494 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
495 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
501 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
503 if( p_sys->b_hurry_up )
504 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
507 else if( !b_drawpicture )
509 /* It creates broken picture
510 * FIXME either our parser or ffmpeg is broken */
512 if( p_sys->b_hurry_up )
513 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
519 * Do the actual decoding now
522 /* Don't forget that ffmpeg requires a little more bytes
523 * that the real frame size */
524 if( p_block->i_buffer > 0 )
526 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
528 p_block = block_Realloc( p_block, 0,
529 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
532 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
534 memset( p_block->p_buffer + p_block->i_buffer, 0,
535 FF_INPUT_BUFFER_PADDING_SIZE );
538 while( p_block->i_buffer > 0 || p_sys->b_flush )
540 int i_used, b_gotpicture;
543 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
545 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
547 if( b_null_size && p_sys->p_context->width > 0 &&
548 p_sys->p_context->height > 0 &&
551 /* Reparse it to not drop the I frame */
553 if( p_sys->b_hurry_up )
554 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
555 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
556 &b_gotpicture, p_block->p_buffer,
561 p_sys->b_first_frame = true;
563 if( p_block->i_buffer <= 0 )
564 p_sys->b_flush = false;
569 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
571 block_Release( p_block );
574 else if( i_used > p_block->i_buffer )
576 i_used = p_block->i_buffer;
580 p_block->i_buffer -= i_used;
581 p_block->p_buffer += i_used;
583 /* Nothing to display */
586 if( i_used == 0 ) break;
591 if( p_sys->p_ff_pic->pts )
592 p_sys->i_pts = p_sys->p_ff_pic->pts;
594 /* Update frame late count (except when doing preroll) */
595 mtime_t i_display_date = 0;
596 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
597 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
599 if( i_display_date > 0 && i_display_date <= mdate() )
601 p_sys->i_late_frames++;
602 if( p_sys->i_late_frames == 1 )
603 p_sys->i_late_frames_start = mdate();
607 p_sys->i_late_frames = 0;
610 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
612 /* Do not display the picture */
613 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
614 if( !b_drawpicture && p_pic )
615 decoder_DeletePicture( p_dec, p_pic );
617 ffmpeg_NextPts( p_dec );
621 if( !p_sys->p_ff_pic->opaque )
623 /* Get a new picture */
624 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
627 block_Release( p_block );
631 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
633 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
637 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
640 /* Sanity check (seems to be needed for some streams) */
641 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
643 p_sys->b_has_b_frames = true;
646 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
648 /* Fetch again the aspect ratio in case it changed */
649 p_dec->fmt_out.video.i_sar_num
650 = p_sys->p_context->sample_aspect_ratio.num;
651 p_dec->fmt_out.video.i_sar_den
652 = p_sys->p_context->sample_aspect_ratio.den;
654 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
656 p_dec->fmt_out.video.i_sar_num = 1;
657 p_dec->fmt_out.video.i_sar_den = 1;
661 /* Send decoded frame to vout */
664 p_pic->date = p_sys->i_pts;
666 ffmpeg_NextPts( p_dec );
668 if( p_sys->b_first_frame )
670 /* Hack to force display of still pictures */
671 p_sys->b_first_frame = false;
672 p_pic->b_force = true;
675 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
676 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
677 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
679 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
680 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
681 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
682 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
683 p_pic->i_qstride * i_mb_h );
684 switch( p_sys->p_ff_pic->qscale_type )
686 case FF_QSCALE_TYPE_MPEG1:
687 p_pic->i_qtype = QTYPE_MPEG1;
689 case FF_QSCALE_TYPE_MPEG2:
690 p_pic->i_qtype = QTYPE_MPEG2;
692 case FF_QSCALE_TYPE_H264:
693 p_pic->i_qtype = QTYPE_H264;
701 decoder_DeletePicture( p_dec, p_pic );
705 block_Release( p_block );
709 /*****************************************************************************
710 * EndVideo: decoder destruction
711 *****************************************************************************
712 * This function is called when the thread ends after a successful
714 *****************************************************************************/
715 void EndVideoDec( decoder_t *p_dec )
717 decoder_sys_t *p_sys = p_dec->p_sys;
719 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
720 if( p_sys->p_context->codec )
721 avcodec_flush_buffers( p_sys->p_context );
723 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
726 vlc_va_Delete( p_sys->p_va );
729 /*****************************************************************************
730 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
731 *****************************************************************************/
732 static void ffmpeg_InitCodec( decoder_t *p_dec )
734 decoder_sys_t *p_sys = p_dec->p_sys;
735 int i_size = p_dec->fmt_in.i_extra;
737 if( !i_size ) return;
739 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
743 p_sys->p_context->extradata_size = i_size + 12;
744 p = p_sys->p_context->extradata =
745 malloc( p_sys->p_context->extradata_size );
749 memcpy( &p[0], "SVQ3", 4 );
750 memset( &p[4], 0, 8 );
751 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
753 /* Now remove all atoms before the SMI one */
754 if( p_sys->p_context->extradata_size > 0x5a &&
755 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
757 uint8_t *psz = &p[0x52];
759 while( psz < &p[p_sys->p_context->extradata_size - 8] )
761 int i_size = GetDWBE( psz );
764 /* FIXME handle 1 as long size */
767 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
769 memmove( &p[0x52], psz,
770 &p[p_sys->p_context->extradata_size] - psz );
780 p_sys->p_context->extradata_size = i_size;
781 p_sys->p_context->extradata =
782 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
783 if( p_sys->p_context->extradata )
785 memcpy( p_sys->p_context->extradata,
786 p_dec->fmt_in.p_extra, i_size );
787 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
788 0, FF_INPUT_BUFFER_PADDING_SIZE );
793 /*****************************************************************************
795 *****************************************************************************/
796 static int ffmpeg_OpenCodec( decoder_t *p_dec )
798 decoder_sys_t *p_sys = p_dec->p_sys;
800 if( p_sys->p_context->extradata_size <= 0 )
802 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
803 p_sys->i_codec_id == CODEC_ID_VORBIS ||
804 p_sys->i_codec_id == CODEC_ID_THEORA )
806 msg_Warn( p_dec, "waiting for extra data for codec %s",
807 p_sys->psz_namecodec );
811 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
812 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
813 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
814 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
816 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
821 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
822 vlc_avcodec_unlock();
825 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
827 p_sys->b_delayed_open = false;
831 /*****************************************************************************
832 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
833 * picture_t structure (when not in direct rendering mode).
834 *****************************************************************************/
835 static void ffmpeg_CopyPicture( decoder_t *p_dec,
836 picture_t *p_pic, AVFrame *p_ff_pic )
838 decoder_sys_t *p_sys = p_dec->p_sys;
842 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
844 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
846 int i_plane, i_size, i_line;
847 uint8_t *p_dst, *p_src;
848 int i_src_stride, i_dst_stride;
850 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
852 p_src = p_ff_pic->data[i_plane];
853 p_dst = p_pic->p[i_plane].p_pixels;
854 i_src_stride = p_ff_pic->linesize[i_plane];
855 i_dst_stride = p_pic->p[i_plane].i_pitch;
857 i_size = __MIN( i_src_stride, i_dst_stride );
858 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
861 vlc_memcpy( p_dst, p_src, i_size );
862 p_src += i_src_stride;
863 p_dst += i_dst_stride;
869 msg_Err( p_dec, "don't know how to convert chroma %i",
870 p_sys->p_context->pix_fmt );
875 /*****************************************************************************
876 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
877 *****************************************************************************
878 * It is used for direct rendering as well as to get the right PTS for each
879 * decoded picture (even in indirect rendering mode).
880 *****************************************************************************/
881 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
883 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
886 decoder_t *p_dec = (decoder_t *)p_context->opaque;
887 decoder_sys_t *p_sys = p_dec->p_sys;
890 /* Set picture PTS */
891 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
894 p_ff_pic->opaque = NULL;
898 #ifdef HAVE_AVCODEC_VA
899 /* hwaccel_context is not present in old fffmpeg version */
900 if( vlc_va_Setup( p_sys->p_va,
901 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
902 p_sys->p_context->width, p_sys->p_context->height ) )
904 msg_Err( p_dec, "vlc_va_Setup failed" );
912 p_ff_pic->type = FF_BUFFER_TYPE_USER;
913 /* FIXME what is that, should give good value */
914 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
916 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
918 msg_Err( p_dec, "VaGrabSurface failed" );
923 else if( !p_sys->b_direct_rendering )
925 /* Not much to do in indirect rendering mode. */
926 return avcodec_default_get_buffer( p_context, p_ff_pic );
929 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
930 * so we need to check for direct rendering again. */
932 int i_width = p_sys->p_context->width;
933 int i_height = p_sys->p_context->height;
934 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
936 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
937 p_context->pix_fmt == PIX_FMT_PAL8 )
940 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
942 /* Get a new picture */
943 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
946 bool b_compatible = true;
947 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
948 p_pic->p[0].i_lines < i_height )
949 b_compatible = false;
950 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
953 switch( p_sys->i_codec_id )
963 i_align = i == 0 ? 16 : 8;
966 if( p_pic->p[i].i_pitch % i_align )
967 b_compatible = false;
968 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
969 b_compatible = false;
971 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
973 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
974 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
975 b_compatible = false;
979 decoder_DeletePicture( p_dec, p_pic );
983 if( p_sys->i_direct_rendering_used != 1 )
985 msg_Dbg( p_dec, "using direct rendering" );
986 p_sys->i_direct_rendering_used = 1;
989 p_sys->p_context->draw_horiz_band = NULL;
991 p_ff_pic->opaque = (void*)p_pic;
992 p_ff_pic->type = FF_BUFFER_TYPE_USER;
993 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
994 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
995 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
996 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
998 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
999 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
1000 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
1001 p_ff_pic->linesize[3] = 0;
1003 decoder_LinkPicture( p_dec, p_pic );
1005 /* FIXME what is that, should give good value */
1006 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
1011 if( p_sys->i_direct_rendering_used != 0 )
1013 msg_Warn( p_dec, "disabling direct rendering" );
1014 p_sys->i_direct_rendering_used = 0;
1016 return avcodec_default_get_buffer( p_context, p_ff_pic );
1018 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1020 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1024 p_ff_pic->pts = AV_NOPTS_VALUE;
1026 /* We always use default reget function, it works perfectly fine */
1027 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
1029 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
1030 * ffmpeg_GetFrameBuf call) */
1031 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
1032 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
1037 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
1039 decoder_sys_t *p_sys = p_dec->p_sys;
1041 /* Set picture PTS */
1042 if( p_sys->input_pts )
1044 p_ff_pic->pts = p_sys->input_pts;
1046 else if( p_sys->input_dts )
1048 /* Some demuxers only set the dts so let's try to find a useful
1049 * timestamp from this */
1050 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1051 !p_ff_pic->reference || !p_sys->i_pts )
1053 p_ff_pic->pts = p_sys->input_dts;
1065 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1067 p_sys->input_pts = p_sys->input_dts = 0;
1071 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1074 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1075 decoder_sys_t *p_sys = p_dec->p_sys;
1079 vlc_va_Release( p_sys->p_va, p_ff_pic );
1082 for( int i = 0; i < 4; i++ )
1083 p_ff_pic->data[i] = NULL;
1085 else if( !p_ff_pic->opaque )
1087 avcodec_default_release_buffer( p_context, p_ff_pic );
1091 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1093 decoder_UnlinkPicture( p_dec, p_pic );
1096 for( int i = 0; i < 4; i++ )
1097 p_ff_pic->data[i] = NULL;
1101 static void ffmpeg_NextPts( decoder_t *p_dec )
1103 decoder_sys_t *p_sys = p_dec->p_sys;
1105 if( p_sys->i_pts <= 0 )
1108 /* interpolate the next PTS */
1109 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1110 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1112 p_sys->i_pts += INT64_C(1000000) *
1113 (2 + p_sys->p_ff_pic->repeat_pict) *
1114 p_dec->fmt_in.video.i_frame_rate_base /
1115 (2 * p_dec->fmt_in.video.i_frame_rate);
1117 else if( p_sys->p_context->time_base.den > 0 )
1119 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1120 int i_tick = p_sys->p_context->ticks_per_frame;
1127 p_sys->i_pts += INT64_C(1000000) *
1128 (2 + p_sys->p_ff_pic->repeat_pict) *
1129 i_tick * p_sys->p_context->time_base.num /
1130 (2 * p_sys->p_context->time_base.den);
1134 #ifdef HAVE_AVCODEC_VA
1135 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1136 const enum PixelFormat *pi_fmt )
1138 decoder_t *p_dec = p_codec->opaque;
1139 decoder_sys_t *p_sys = p_dec->p_sys;
1143 vlc_va_Delete( p_sys->p_va );
1147 /* Try too look for a supported hw acceleration */
1148 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1150 static const char *ppsz_name[PIX_FMT_NB] = {
1151 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1152 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1153 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1154 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1155 #ifdef HAVE_AVCODEC_DXVA2
1156 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1158 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1159 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1161 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1163 /* Only VLD supported */
1164 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1166 #ifdef HAVE_AVCODEC_VAAPI
1167 msg_Dbg( p_dec, "Trying VA API" );
1168 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1170 msg_Warn( p_dec, "Failed to open VA API" );
1175 #ifdef HAVE_AVCODEC_DXVA2
1176 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1178 msg_Dbg( p_dec, "Trying DXVA2" );
1179 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1181 msg_Warn( p_dec, "Failed to open DXVA2" );
1186 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1188 /* We try to call vlc_va_Setup when possible to detect errors when
1189 * possible (later is too late) */
1190 if( vlc_va_Setup( p_sys->p_va,
1191 &p_sys->p_context->hwaccel_context,
1192 &p_dec->fmt_out.video.i_chroma,
1193 p_sys->p_context->width, p_sys->p_context->height ) )
1195 msg_Err( p_dec, "vlc_va_Setup failed" );
1196 vlc_va_Delete( p_sys->p_va );
1203 if( p_sys->p_va->description )
1204 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1206 /* FIXME this will disabled direct rendering
1207 * even if a new pixel format is renegociated
1209 p_sys->b_direct_rendering = false;
1210 p_sys->p_context->draw_horiz_band = NULL;
1215 /* Fallback to default behaviour */
1216 return avcodec_default_get_format( p_codec, pi_fmt );