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_codecs.h> /* BITMAPINFOHEADER */
35 #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 #elif defined(HAVE_FFMPEG_AVCODEC_H)
45 # include <ffmpeg/avcodec.h>
53 /*****************************************************************************
54 * decoder_sys_t : decoder descriptor
55 *****************************************************************************/
60 /* Video decoder specific part */
67 /* for frame skipping algo */
69 enum AVDiscard i_skip_frame;
70 enum AVDiscard i_skip_idct;
72 /* how many decoded frames are late */
74 mtime_t i_late_frames_start;
76 /* for direct rendering */
77 bool b_direct_rendering;
81 /* Hack to force display of still pictures */
85 AVPaletteControl palette;
94 /* FIXME (dummy palette for now) */
95 static const AVPaletteControl palette_control;
97 /*****************************************************************************
99 *****************************************************************************/
100 static void ffmpeg_InitCodec ( decoder_t * );
101 static int ffmpeg_OpenCodec ( decoder_t * );
102 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
103 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
104 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *, AVFrame * );
105 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
106 static void ffmpeg_NextPts( decoder_t * );
108 #ifdef HAVE_AVCODEC_VAAPI
109 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *,
110 const enum PixelFormat * );
113 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
115 uint8_t *p = (uint8_t*)&fcc;
116 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
119 /*****************************************************************************
121 *****************************************************************************/
123 /* Returns a new picture buffer */
124 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
125 AVCodecContext *p_context )
127 decoder_sys_t *p_sys = p_dec->p_sys;
129 p_dec->fmt_out.video.i_width = p_context->width;
130 p_dec->fmt_out.video.i_height = p_context->height;
132 if( !p_context->width || !p_context->height )
134 return NULL; /* invalid display size */
137 if( !p_sys->p_va && GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) )
139 /* we are doomed, but not really, because most codecs set their pix_fmt
141 * FIXME does it make sense here ? */
142 p_dec->fmt_out.video.i_chroma = VLC_CODEC_I420;
144 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
146 /* If an aspect-ratio was specified in the input format then force it */
147 if( p_dec->fmt_in.video.i_aspect )
149 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
153 p_dec->fmt_out.video.i_aspect =
154 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
155 p_context->width / p_context->height );
156 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
157 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
159 if( p_dec->fmt_out.video.i_aspect == 0 )
161 p_dec->fmt_out.video.i_aspect =
162 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
166 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
167 p_dec->fmt_in.video.i_frame_rate_base > 0 )
169 p_dec->fmt_out.video.i_frame_rate =
170 p_dec->fmt_in.video.i_frame_rate;
171 p_dec->fmt_out.video.i_frame_rate_base =
172 p_dec->fmt_in.video.i_frame_rate_base;
174 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
176 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
177 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
180 return decoder_NewPicture( p_dec );
183 /*****************************************************************************
184 * InitVideo: initialize the video decoder
185 *****************************************************************************
186 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
187 * opened (done after the first decoded frame).
188 *****************************************************************************/
189 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
190 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
192 decoder_sys_t *p_sys;
195 /* Allocate the memory needed to store the decoder's structure */
196 if( ( p_dec->p_sys = p_sys = calloc( 1, sizeof(decoder_sys_t) ) ) == NULL )
199 p_codec->type = CODEC_TYPE_VIDEO;
200 p_context->codec_type = CODEC_TYPE_VIDEO;
201 p_context->codec_id = i_codec_id;
202 p_sys->p_context = p_context;
203 p_sys->p_codec = p_codec;
204 p_sys->i_codec_id = i_codec_id;
205 p_sys->psz_namecodec = psz_namecodec;
206 p_sys->p_ff_pic = avcodec_alloc_frame();
207 p_sys->b_delayed_open = true;
210 /* ***** Fill p_context with init values ***** */
211 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ?: p_dec->fmt_in.i_codec );
213 /* ***** Get configuration of ffmpeg plugin ***** */
214 p_sys->p_context->workaround_bugs =
215 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
216 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 52, 0, 0 )
217 p_sys->p_context->error_resilience =
218 config_GetInt( p_dec, "ffmpeg-error-resilience" );
220 p_sys->p_context->error_recognition =
221 config_GetInt( p_dec, "ffmpeg-error-resilience" );
224 if( var_CreateGetBool( p_dec, "grayscale" ) )
225 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
227 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
228 if( i_val ) p_sys->p_context->debug_mv = i_val;
230 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
231 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
233 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
234 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
235 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
236 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
237 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
239 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
240 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
242 /* ***** ffmpeg frame skipping ***** */
243 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
245 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
248 p_sys->p_context->skip_frame = AVDISCARD_NONE;
251 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
254 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
257 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
260 p_sys->p_context->skip_frame = AVDISCARD_ALL;
263 p_sys->p_context->skip_frame = AVDISCARD_NONE;
266 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
268 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
271 p_sys->p_context->skip_idct = AVDISCARD_NONE;
274 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
277 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
280 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
283 p_sys->p_context->skip_idct = AVDISCARD_ALL;
286 p_sys->p_context->skip_idct = AVDISCARD_NONE;
289 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
291 /* ***** ffmpeg direct rendering ***** */
292 p_sys->b_direct_rendering = false;
293 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
294 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
295 /* Apparently direct rendering doesn't work with YUV422P */
296 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
297 /* H264 uses too many reference frames */
298 p_sys->i_codec_id != CODEC_ID_H264 &&
299 /* No idea why ... but this fixes flickering on some TSCC streams */
300 p_sys->i_codec_id != CODEC_ID_TSCC &&
301 !p_sys->p_context->debug_mv )
303 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
304 * so we need to do another check in ffmpeg_GetFrameBuf() */
305 p_sys->b_direct_rendering = true;
308 /* ffmpeg doesn't properly release old pictures when frames are skipped */
309 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
310 if( p_sys->b_direct_rendering )
312 msg_Dbg( p_dec, "using direct rendering" );
313 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
316 /* Always use our get_buffer wrapper so we can calculate the
318 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
319 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
320 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
321 p_sys->p_context->opaque = p_dec;
323 #ifdef HAVE_AVCODEC_VAAPI
324 if( var_CreateGetBool( p_dec, "ffmpeg-hw" ) )
325 p_sys->p_context->get_format = ffmpeg_GetFormat;
328 /* ***** misc init ***** */
329 p_sys->input_pts = p_sys->input_dts = 0;
331 p_sys->b_has_b_frames = false;
332 p_sys->b_first_frame = true;
333 p_sys->b_flush = false;
334 p_sys->i_late_frames = 0;
336 /* Set output properties */
337 p_dec->fmt_out.i_cat = VIDEO_ES;
338 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
340 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
341 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
343 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
346 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
347 if( p_dec->fmt_in.video.p_palette )
349 p_sys->palette.palette_changed = 1;
351 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
357 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
358 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
359 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
360 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
362 p_sys->palette.palette[i] = c.u;
364 p_sys->p_context->palctrl = &p_sys->palette;
366 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
367 if( p_dec->fmt_out.video.p_palette )
368 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
370 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
372 p_sys->p_context->palctrl = &p_sys->palette;
375 /* ***** init this codec with special data ***** */
376 ffmpeg_InitCodec( p_dec );
378 /* ***** Open the codec ***** */
379 if( ffmpeg_OpenCodec( p_dec ) < 0 )
381 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
382 av_free( p_sys->p_ff_pic );
390 /*****************************************************************************
391 * DecodeVideo: Called to decode one or more frames
392 *****************************************************************************/
393 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
395 decoder_sys_t *p_sys = p_dec->p_sys;
397 int b_null_size = false;
400 if( !pp_block || !*pp_block )
403 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
405 ffmpeg_InitCodec( p_dec );
406 if( p_sys->b_delayed_open )
408 if( ffmpeg_OpenCodec( p_dec ) )
409 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
414 if( p_sys->b_delayed_open )
416 block_Release( p_block );
420 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
422 p_sys->i_pts = 0; /* To make sure we recover properly */
424 p_sys->input_pts = p_sys->input_dts = 0;
425 p_sys->i_late_frames = 0;
427 block_Release( p_block );
429 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
430 //avcodec_flush_buffers( p_sys->p_context );
434 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
436 /* Do not care about late frames when prerolling
437 * TODO avoid decoding of non reference frame
438 * (ie all B except for H264 where it depends only on nal_ref_idc) */
439 p_sys->i_late_frames = 0;
442 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
443 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
447 msg_Err( p_dec, "more than 5 seconds of late video -> "
448 "dropping frame (computer too slow ?)" );
449 p_sys->i_pts = 0; /* To make sure we recover properly */
451 block_Release( p_block );
452 p_sys->i_late_frames--;
456 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
458 p_sys->input_pts = p_block->i_pts;
459 p_sys->input_dts = p_block->i_dts;
461 /* Make sure we don't reuse the same timestamps twice */
462 p_block->i_pts = p_block->i_dts = 0;
465 /* A good idea could be to decode all I pictures and see for the other */
466 if( !p_dec->b_pace_control &&
468 (p_sys->i_late_frames > 4) )
471 if( p_sys->i_late_frames < 12 )
473 p_sys->p_context->skip_frame =
474 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
475 AVDISCARD_BIDIR : p_sys->i_skip_frame;
479 /* picture too late, won't decode
480 * but break picture until a new I, and for mpeg4 ...*/
481 p_sys->i_late_frames--; /* needed else it will never be decrease */
482 block_Release( p_block );
488 if( p_sys->b_hurry_up )
489 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
490 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
496 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
498 if( p_sys->b_hurry_up )
499 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
502 else if( !b_drawpicture )
504 /* It creates broken picture
505 * FIXME either our parser or ffmpeg is broken */
507 if( p_sys->b_hurry_up )
508 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
514 * Do the actual decoding now
517 /* Don't forget that ffmpeg requires a little more bytes
518 * that the real frame size */
519 if( p_block->i_buffer > 0 )
521 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
523 p_block = block_Realloc( p_block, 0,
524 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
527 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
529 memset( p_block->p_buffer + p_block->i_buffer, 0,
530 FF_INPUT_BUFFER_PADDING_SIZE );
533 while( p_block->i_buffer > 0 || p_sys->b_flush )
535 int i_used, b_gotpicture;
538 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
540 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
542 if( b_null_size && p_sys->p_context->width > 0 &&
543 p_sys->p_context->height > 0 &&
546 /* Reparse it to not drop the I frame */
548 if( p_sys->b_hurry_up )
549 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
550 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
551 &b_gotpicture, p_block->p_buffer,
556 p_sys->b_first_frame = true;
558 if( p_block->i_buffer <= 0 )
559 p_sys->b_flush = false;
564 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
566 block_Release( p_block );
569 else if( i_used > p_block->i_buffer )
571 i_used = p_block->i_buffer;
575 p_block->i_buffer -= i_used;
576 p_block->p_buffer += i_used;
578 /* Nothing to display */
581 if( i_used == 0 ) break;
586 if( p_sys->p_ff_pic->pts )
587 p_sys->i_pts = p_sys->p_ff_pic->pts;
589 /* Update frame late count (except when doing preroll) */
590 mtime_t i_display_date = 0;
591 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
592 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
594 if( i_display_date > 0 && i_display_date <= mdate() )
596 p_sys->i_late_frames++;
597 if( p_sys->i_late_frames == 1 )
598 p_sys->i_late_frames_start = mdate();
602 p_sys->i_late_frames = 0;
605 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
607 /* Do not display the picture */
608 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
609 if( !b_drawpicture && p_pic )
610 decoder_DeletePicture( p_dec, p_pic );
612 ffmpeg_NextPts( p_dec );
616 if( !p_sys->p_ff_pic->opaque )
618 /* Get a new picture */
619 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
622 block_Release( p_block );
626 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
628 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
632 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
635 /* Sanity check (seems to be needed for some streams) */
636 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
638 p_sys->b_has_b_frames = true;
641 if( !p_dec->fmt_in.video.i_aspect )
643 /* Fetch again the aspect ratio in case it changed */
644 p_dec->fmt_out.video.i_aspect =
646 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
647 * p_sys->p_context->width / p_sys->p_context->height );
648 p_dec->fmt_out.video.i_sar_num
649 = p_sys->p_context->sample_aspect_ratio.num;
650 p_dec->fmt_out.video.i_sar_den
651 = p_sys->p_context->sample_aspect_ratio.den;
653 if( p_dec->fmt_out.video.i_aspect == 0 )
655 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
656 * p_sys->p_context->width / p_sys->p_context->height;
660 /* Send decoded frame to vout */
663 p_pic->date = p_sys->i_pts;
665 ffmpeg_NextPts( p_dec );
667 if( p_sys->b_first_frame )
669 /* Hack to force display of still pictures */
670 p_sys->b_first_frame = false;
671 p_pic->b_force = true;
674 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
675 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
676 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
678 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
679 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
680 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
681 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
682 p_pic->i_qstride * i_mb_h );
683 switch( p_sys->p_ff_pic->qscale_type )
685 case FF_QSCALE_TYPE_MPEG1:
686 p_pic->i_qtype = QTYPE_MPEG1;
688 case FF_QSCALE_TYPE_MPEG2:
689 p_pic->i_qtype = QTYPE_MPEG2;
691 case FF_QSCALE_TYPE_H264:
692 p_pic->i_qtype = QTYPE_H264;
700 decoder_DeletePicture( p_dec, p_pic );
704 block_Release( p_block );
708 /*****************************************************************************
709 * EndVideo: decoder destruction
710 *****************************************************************************
711 * This function is called when the thread ends after a successful
713 *****************************************************************************/
714 void EndVideoDec( decoder_t *p_dec )
716 decoder_sys_t *p_sys = p_dec->p_sys;
718 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
719 if( p_sys->p_context->codec )
720 avcodec_flush_buffers( p_sys->p_context );
722 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
725 VaDelete( p_sys->p_va );
728 /*****************************************************************************
729 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
730 *****************************************************************************/
731 static void ffmpeg_InitCodec( decoder_t *p_dec )
733 decoder_sys_t *p_sys = p_dec->p_sys;
734 int i_size = p_dec->fmt_in.i_extra;
736 if( !i_size ) return;
738 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
742 p_sys->p_context->extradata_size = i_size + 12;
743 p = p_sys->p_context->extradata =
744 malloc( p_sys->p_context->extradata_size );
748 memcpy( &p[0], "SVQ3", 4 );
749 memset( &p[4], 0, 8 );
750 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
752 /* Now remove all atoms before the SMI one */
753 if( p_sys->p_context->extradata_size > 0x5a &&
754 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
756 uint8_t *psz = &p[0x52];
758 while( psz < &p[p_sys->p_context->extradata_size - 8] )
760 int i_size = GetDWBE( psz );
763 /* FIXME handle 1 as long size */
766 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
768 memmove( &p[0x52], psz,
769 &p[p_sys->p_context->extradata_size] - psz );
779 p_sys->p_context->extradata_size = i_size;
780 p_sys->p_context->extradata =
781 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
782 if( p_sys->p_context->extradata )
784 memcpy( p_sys->p_context->extradata,
785 p_dec->fmt_in.p_extra, i_size );
786 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
787 0, FF_INPUT_BUFFER_PADDING_SIZE );
792 /*****************************************************************************
794 *****************************************************************************/
795 static int ffmpeg_OpenCodec( decoder_t *p_dec )
797 decoder_sys_t *p_sys = p_dec->p_sys;
799 if( p_sys->p_context->extradata_size <= 0 )
801 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
802 p_sys->i_codec_id == CODEC_ID_VORBIS ||
803 p_sys->i_codec_id == CODEC_ID_THEORA )
805 msg_Warn( p_dec, "waiting for extra data for codec %s",
806 p_sys->psz_namecodec );
810 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
811 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
812 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
813 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
815 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
820 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
821 vlc_avcodec_unlock();
824 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
826 p_sys->b_delayed_open = false;
830 char psz_version[128];
832 VaVersion( p_sys->p_va, psz_version, sizeof(psz_version) );
833 msg_Info( p_dec, "Using VA API version %s for hardware decoding.", psz_version );
838 /*****************************************************************************
839 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
840 * picture_t structure (when not in direct rendering mode).
841 *****************************************************************************/
842 static void ffmpeg_CopyPicture( decoder_t *p_dec,
843 picture_t *p_pic, AVFrame *p_ff_pic )
845 decoder_sys_t *p_sys = p_dec->p_sys;
849 VaExtract( p_sys->p_va, p_pic, p_ff_pic );
851 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
853 int i_plane, i_size, i_line;
854 uint8_t *p_dst, *p_src;
855 int i_src_stride, i_dst_stride;
857 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
859 p_src = p_ff_pic->data[i_plane];
860 p_dst = p_pic->p[i_plane].p_pixels;
861 i_src_stride = p_ff_pic->linesize[i_plane];
862 i_dst_stride = p_pic->p[i_plane].i_pitch;
864 i_size = __MIN( i_src_stride, i_dst_stride );
865 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
868 vlc_memcpy( p_dst, p_src, i_size );
869 p_src += i_src_stride;
870 p_dst += i_dst_stride;
876 msg_Err( p_dec, "don't know how to convert chroma %i",
877 p_sys->p_context->pix_fmt );
882 /*****************************************************************************
883 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
884 *****************************************************************************
885 * It is used for direct rendering as well as to get the right PTS for each
886 * decoded picture (even in indirect rendering mode).
887 *****************************************************************************/
888 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
890 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
893 decoder_t *p_dec = (decoder_t *)p_context->opaque;
894 decoder_sys_t *p_sys = p_dec->p_sys;
897 /* Set picture PTS */
898 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
901 p_ff_pic->opaque = NULL;
905 #ifdef HAVE_AVCODEC_VAAPI
906 /* hwaccel_context is not present in old fffmpeg version */
907 if( VaSetup( p_sys->p_va,
908 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
909 p_sys->p_context->width, p_sys->p_context->height ) )
911 msg_Err( p_dec, "VaSetup failed" );
919 p_ff_pic->type = FF_BUFFER_TYPE_USER;
920 /* FIXME what is that, should give good value */
921 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
923 if( VaGrabSurface( p_sys->p_va, p_ff_pic ) )
925 msg_Err( p_dec, "VaGrabSurface failed" );
930 else if( !p_sys->b_direct_rendering )
932 /* Not much to do in indirect rendering mode */
933 return avcodec_default_get_buffer( p_context, p_ff_pic );
936 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
937 * so we need to check for direct rendering again. */
939 int i_width = p_sys->p_context->width;
940 int i_height = p_sys->p_context->height;
941 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
943 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
944 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 ||
945 /* We only pad picture up to 16 */
946 PAD(p_sys->p_context->width,16) < i_width || PAD(p_sys->p_context->height,16) < i_height ||
947 p_context->pix_fmt == PIX_FMT_PAL8 )
948 return avcodec_default_get_buffer( p_context, p_ff_pic );
950 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
952 /* Get a new picture */
953 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
955 return avcodec_default_get_buffer( p_context, p_ff_pic );
957 p_sys->p_context->draw_horiz_band = NULL;
959 p_ff_pic->opaque = (void*)p_pic;
960 p_ff_pic->type = FF_BUFFER_TYPE_USER;
961 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
962 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
963 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
964 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
966 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
967 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
968 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
969 p_ff_pic->linesize[3] = 0;
971 decoder_LinkPicture( p_dec, p_pic );
973 /* FIXME what is that, should give good value */
974 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
978 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
980 decoder_t *p_dec = (decoder_t *)p_context->opaque;
984 p_ff_pic->pts = AV_NOPTS_VALUE;
986 /* We always use default reget function, it works perfectly fine */
987 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
989 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
990 * ffmpeg_GetFrameBuf call) */
991 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
992 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
997 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
999 decoder_sys_t *p_sys = p_dec->p_sys;
1001 /* Set picture PTS */
1002 if( p_sys->input_pts )
1004 p_ff_pic->pts = p_sys->input_pts;
1006 else if( p_sys->input_dts )
1008 /* Some demuxers only set the dts so let's try to find a useful
1009 * timestamp from this */
1010 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1011 !p_ff_pic->reference || !p_sys->i_pts )
1013 p_ff_pic->pts = p_sys->input_dts;
1025 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1027 p_sys->input_pts = p_sys->input_dts = 0;
1031 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1034 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1035 decoder_sys_t *p_sys = p_dec->p_sys;
1039 VaUngrabSurface( p_sys->p_va, p_ff_pic );
1042 for( int i = 0; i < 4; i++ )
1043 p_ff_pic->data[i] = NULL;
1045 else if( !p_ff_pic->opaque )
1047 avcodec_default_release_buffer( p_context, p_ff_pic );
1051 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1053 decoder_UnlinkPicture( p_dec, p_pic );
1056 for( int i = 0; i < 4; i++ )
1057 p_ff_pic->data[i] = NULL;
1061 static void ffmpeg_NextPts( decoder_t *p_dec )
1063 decoder_sys_t *p_sys = p_dec->p_sys;
1065 if( p_sys->i_pts <= 0 )
1068 /* interpolate the next PTS */
1069 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1070 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1072 p_sys->i_pts += INT64_C(1000000) *
1073 (2 + p_sys->p_ff_pic->repeat_pict) *
1074 p_dec->fmt_in.video.i_frame_rate_base /
1075 (2 * p_dec->fmt_in.video.i_frame_rate);
1077 else if( p_sys->p_context->time_base.den > 0 )
1079 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1080 int i_tick = p_sys->p_context->ticks_per_frame;
1087 p_sys->i_pts += INT64_C(1000000) *
1088 (2 + p_sys->p_ff_pic->repeat_pict) *
1089 i_tick * p_sys->p_context->time_base.num /
1090 (2 * p_sys->p_context->time_base.den);
1094 #ifdef HAVE_AVCODEC_VAAPI
1095 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1096 const enum PixelFormat *pi_fmt )
1098 decoder_t *p_dec = p_codec->opaque;
1099 decoder_sys_t *p_sys = p_dec->p_sys;
1103 VaDelete( p_sys->p_va );
1107 /* Try too look for a supported hw acceleration */
1108 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1110 static const char *ppsz_name[PIX_FMT_NB] = {
1111 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1112 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1113 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1114 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1115 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1116 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1118 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1120 /* Only VLD supported */
1121 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1123 msg_Dbg( p_dec, "Trying VA API" );
1124 p_sys->p_va = VaNew( p_sys->i_codec_id );
1127 /* FIXME this will disabled direct rendering
1128 * even if a new pixel format is renegociated
1130 * FIXME Try to call VaSetup when possible
1131 * to detect errors when possible (later is too late) */
1132 p_sys->b_direct_rendering = false;
1133 p_sys->p_context->draw_horiz_band = NULL;
1136 msg_Warn( p_dec, "Failed to open VA API" );
1140 /* Fallback to default behaviour */
1141 return avcodec_default_get_format( p_codec, pi_fmt );