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 p_sys->p_context->error_recognition =
221 var_InheritInteger( p_dec, "ffmpeg-error-resilience" );
223 if( var_CreateGetBool( p_dec, "grayscale" ) )
224 p_sys->p_context->flags |= CODEC_FLAG_GRAY;
226 i_val = var_CreateGetInteger( p_dec, "ffmpeg-vismv" );
227 if( i_val ) p_sys->p_context->debug_mv = i_val;
229 i_val = var_CreateGetInteger( p_dec, "ffmpeg-lowres" );
230 if( i_val > 0 && i_val <= 2 ) p_sys->p_context->lowres = i_val;
232 i_val = var_CreateGetInteger( p_dec, "ffmpeg-skiploopfilter" );
233 if( i_val >= 4 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
234 else if( i_val == 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
235 else if( i_val == 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
236 else if( i_val == 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
238 if( var_CreateGetBool( p_dec, "ffmpeg-fast" ) )
239 p_sys->p_context->flags2 |= CODEC_FLAG2_FAST;
241 /* ***** ffmpeg frame skipping ***** */
242 p_sys->b_hurry_up = var_CreateGetBool( p_dec, "ffmpeg-hurry-up" );
244 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-frame" ) )
247 p_sys->p_context->skip_frame = AVDISCARD_NONE;
250 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
253 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
256 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
259 p_sys->p_context->skip_frame = AVDISCARD_ALL;
262 p_sys->p_context->skip_frame = AVDISCARD_NONE;
265 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
267 switch( var_CreateGetInteger( p_dec, "ffmpeg-skip-idct" ) )
270 p_sys->p_context->skip_idct = AVDISCARD_NONE;
273 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
276 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
279 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
282 p_sys->p_context->skip_idct = AVDISCARD_ALL;
285 p_sys->p_context->skip_idct = AVDISCARD_NONE;
288 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
290 /* ***** ffmpeg direct rendering ***** */
291 p_sys->b_direct_rendering = false;
292 p_sys->i_direct_rendering_used = -1;
293 if( var_CreateGetBool( p_dec, "ffmpeg-dr" ) &&
294 (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
295 /* No idea why ... but this fixes flickering on some TSCC streams */
296 p_sys->i_codec_id != CODEC_ID_TSCC &&
297 !p_sys->p_context->debug_mv )
299 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
300 * so we need to do another check in ffmpeg_GetFrameBuf() */
301 p_sys->b_direct_rendering = true;
304 /* ffmpeg doesn't properly release old pictures when frames are skipped */
305 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = false;
306 if( p_sys->b_direct_rendering )
308 msg_Dbg( p_dec, "trying to use direct rendering" );
309 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
313 msg_Dbg( p_dec, "direct rendering is disabled" );
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_VA
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 ffmpeg_NextPts( p_dec );
612 if( !p_sys->p_ff_pic->opaque )
614 /* Get a new picture */
615 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
618 block_Release( p_block );
622 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
624 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
628 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
629 decoder_LinkPicture( p_dec, p_pic );
632 /* Sanity check (seems to be needed for some streams) */
633 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
635 p_sys->b_has_b_frames = true;
638 if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den )
640 /* Fetch again the aspect ratio in case it changed */
641 p_dec->fmt_out.video.i_sar_num
642 = p_sys->p_context->sample_aspect_ratio.num;
643 p_dec->fmt_out.video.i_sar_den
644 = p_sys->p_context->sample_aspect_ratio.den;
646 if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den )
648 p_dec->fmt_out.video.i_sar_num = 1;
649 p_dec->fmt_out.video.i_sar_den = 1;
653 /* Send decoded frame to vout */
656 p_pic->date = p_sys->i_pts;
658 ffmpeg_NextPts( p_dec );
660 if( p_sys->b_first_frame )
662 /* Hack to force display of still pictures */
663 p_sys->b_first_frame = false;
664 p_pic->b_force = true;
667 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
668 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
669 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
671 p_pic->i_qstride = p_sys->p_ff_pic->qstride;
672 int i_mb_h = ( p_pic->format.i_height + 15 ) / 16;
673 p_pic->p_q = malloc( p_pic->i_qstride * i_mb_h );
674 memcpy( p_pic->p_q, p_sys->p_ff_pic->qscale_table,
675 p_pic->i_qstride * i_mb_h );
676 switch( p_sys->p_ff_pic->qscale_type )
678 case FF_QSCALE_TYPE_MPEG1:
679 p_pic->i_qtype = QTYPE_MPEG1;
681 case FF_QSCALE_TYPE_MPEG2:
682 p_pic->i_qtype = QTYPE_MPEG2;
684 case FF_QSCALE_TYPE_H264:
685 p_pic->i_qtype = QTYPE_H264;
693 decoder_DeletePicture( p_dec, p_pic );
697 block_Release( p_block );
701 /*****************************************************************************
702 * EndVideo: decoder destruction
703 *****************************************************************************
704 * This function is called when the thread ends after a successful
706 *****************************************************************************/
707 void EndVideoDec( decoder_t *p_dec )
709 decoder_sys_t *p_sys = p_dec->p_sys;
711 /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */
712 if( p_sys->p_context->codec )
713 avcodec_flush_buffers( p_sys->p_context );
715 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
718 vlc_va_Delete( p_sys->p_va );
721 /*****************************************************************************
722 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
723 *****************************************************************************/
724 static void ffmpeg_InitCodec( decoder_t *p_dec )
726 decoder_sys_t *p_sys = p_dec->p_sys;
727 int i_size = p_dec->fmt_in.i_extra;
729 if( !i_size ) return;
731 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
735 p_sys->p_context->extradata_size = i_size + 12;
736 p = p_sys->p_context->extradata =
737 malloc( p_sys->p_context->extradata_size );
741 memcpy( &p[0], "SVQ3", 4 );
742 memset( &p[4], 0, 8 );
743 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
745 /* Now remove all atoms before the SMI one */
746 if( p_sys->p_context->extradata_size > 0x5a &&
747 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
749 uint8_t *psz = &p[0x52];
751 while( psz < &p[p_sys->p_context->extradata_size - 8] )
753 int i_size = GetDWBE( psz );
756 /* FIXME handle 1 as long size */
759 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
761 memmove( &p[0x52], psz,
762 &p[p_sys->p_context->extradata_size] - psz );
772 p_sys->p_context->extradata_size = i_size;
773 p_sys->p_context->extradata =
774 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
775 if( p_sys->p_context->extradata )
777 memcpy( p_sys->p_context->extradata,
778 p_dec->fmt_in.p_extra, i_size );
779 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
780 0, FF_INPUT_BUFFER_PADDING_SIZE );
785 /*****************************************************************************
787 *****************************************************************************/
788 static int ffmpeg_OpenCodec( decoder_t *p_dec )
790 decoder_sys_t *p_sys = p_dec->p_sys;
792 if( p_sys->p_context->extradata_size <= 0 )
794 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
795 p_sys->i_codec_id == CODEC_ID_VORBIS ||
796 p_sys->i_codec_id == CODEC_ID_THEORA )
798 msg_Warn( p_dec, "waiting for extra data for codec %s",
799 p_sys->psz_namecodec );
803 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
804 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
805 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
809 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
810 vlc_avcodec_unlock();
813 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
815 p_sys->b_delayed_open = false;
819 /*****************************************************************************
820 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
821 * picture_t structure (when not in direct rendering mode).
822 *****************************************************************************/
823 static void ffmpeg_CopyPicture( decoder_t *p_dec,
824 picture_t *p_pic, AVFrame *p_ff_pic )
826 decoder_sys_t *p_sys = p_dec->p_sys;
830 vlc_va_Extract( p_sys->p_va, p_pic, p_ff_pic );
832 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
834 int i_plane, i_size, i_line;
835 uint8_t *p_dst, *p_src;
836 int i_src_stride, i_dst_stride;
838 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
840 p_src = p_ff_pic->data[i_plane];
841 p_dst = p_pic->p[i_plane].p_pixels;
842 i_src_stride = p_ff_pic->linesize[i_plane];
843 i_dst_stride = p_pic->p[i_plane].i_pitch;
845 i_size = __MIN( i_src_stride, i_dst_stride );
846 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
849 vlc_memcpy( p_dst, p_src, i_size );
850 p_src += i_src_stride;
851 p_dst += i_dst_stride;
857 msg_Err( p_dec, "don't know how to convert chroma %i",
858 p_sys->p_context->pix_fmt );
863 /*****************************************************************************
864 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
865 *****************************************************************************
866 * It is used for direct rendering as well as to get the right PTS for each
867 * decoded picture (even in indirect rendering mode).
868 *****************************************************************************/
869 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
871 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
874 decoder_t *p_dec = (decoder_t *)p_context->opaque;
875 decoder_sys_t *p_sys = p_dec->p_sys;
878 /* Set picture PTS */
879 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
882 p_ff_pic->opaque = NULL;
886 #ifdef HAVE_AVCODEC_VA
887 /* hwaccel_context is not present in old fffmpeg version */
888 if( vlc_va_Setup( p_sys->p_va,
889 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
890 p_sys->p_context->width, p_sys->p_context->height ) )
892 msg_Err( p_dec, "vlc_va_Setup failed" );
900 p_ff_pic->type = FF_BUFFER_TYPE_USER;
901 /* FIXME what is that, should give good value */
902 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
904 if( vlc_va_Get( p_sys->p_va, p_ff_pic ) )
906 msg_Err( p_dec, "VaGrabSurface failed" );
911 else if( !p_sys->b_direct_rendering )
913 /* Not much to do in indirect rendering mode. */
914 return avcodec_default_get_buffer( p_context, p_ff_pic );
917 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
918 * so we need to check for direct rendering again. */
920 int i_width = p_sys->p_context->width;
921 int i_height = p_sys->p_context->height;
922 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
924 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
925 p_context->pix_fmt == PIX_FMT_PAL8 )
928 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
930 /* Get a new picture */
931 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
934 bool b_compatible = true;
935 if( p_pic->p[0].i_pitch / p_pic->p[0].i_pixel_pitch < i_width ||
936 p_pic->p[0].i_lines < i_height )
937 b_compatible = false;
938 for( int i = 0; i < p_pic->i_planes && b_compatible; i++ )
941 switch( p_sys->i_codec_id )
951 i_align = i == 0 ? 16 : 8;
954 if( p_pic->p[i].i_pitch % i_align )
955 b_compatible = false;
956 if( (intptr_t)p_pic->p[i].p_pixels % i_align )
957 b_compatible = false;
959 if( p_context->pix_fmt == PIX_FMT_YUV422P && b_compatible )
961 if( 2 * p_pic->p[1].i_pitch != p_pic->p[0].i_pitch ||
962 2 * p_pic->p[2].i_pitch != p_pic->p[0].i_pitch )
963 b_compatible = false;
967 decoder_DeletePicture( p_dec, p_pic );
971 if( p_sys->i_direct_rendering_used != 1 )
973 msg_Dbg( p_dec, "using direct rendering" );
974 p_sys->i_direct_rendering_used = 1;
977 p_sys->p_context->draw_horiz_band = NULL;
979 p_ff_pic->opaque = (void*)p_pic;
980 p_ff_pic->type = FF_BUFFER_TYPE_USER;
981 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
982 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
983 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
984 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
986 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
987 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
988 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
989 p_ff_pic->linesize[3] = 0;
991 /* FIXME what is that, should give good value */
992 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
997 if( p_sys->i_direct_rendering_used != 0 )
999 msg_Warn( p_dec, "disabling direct rendering" );
1000 p_sys->i_direct_rendering_used = 0;
1002 return avcodec_default_get_buffer( p_context, p_ff_pic );
1004 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
1006 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1010 p_ff_pic->pts = AV_NOPTS_VALUE;
1012 /* We always use default reget function, it works perfectly fine */
1013 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
1015 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
1016 * ffmpeg_GetFrameBuf call) */
1017 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
1018 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
1023 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
1025 decoder_sys_t *p_sys = p_dec->p_sys;
1027 /* Set picture PTS */
1028 if( p_sys->input_pts )
1030 p_ff_pic->pts = p_sys->input_pts;
1032 else if( p_sys->input_dts )
1034 /* Some demuxers only set the dts so let's try to find a useful
1035 * timestamp from this */
1036 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1037 !p_ff_pic->reference || !p_sys->i_pts )
1039 p_ff_pic->pts = p_sys->input_dts;
1051 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1053 p_sys->input_pts = p_sys->input_dts = 0;
1057 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1060 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1061 decoder_sys_t *p_sys = p_dec->p_sys;
1065 vlc_va_Release( p_sys->p_va, p_ff_pic );
1068 for( int i = 0; i < 4; i++ )
1069 p_ff_pic->data[i] = NULL;
1071 else if( !p_ff_pic->opaque )
1073 avcodec_default_release_buffer( p_context, p_ff_pic );
1077 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1079 decoder_UnlinkPicture( p_dec, p_pic );
1082 for( int i = 0; i < 4; i++ )
1083 p_ff_pic->data[i] = NULL;
1087 static void ffmpeg_NextPts( decoder_t *p_dec )
1089 decoder_sys_t *p_sys = p_dec->p_sys;
1091 if( p_sys->i_pts <= 0 )
1094 /* interpolate the next PTS */
1095 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1096 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1098 p_sys->i_pts += INT64_C(1000000) *
1099 (2 + p_sys->p_ff_pic->repeat_pict) *
1100 p_dec->fmt_in.video.i_frame_rate_base /
1101 (2 * p_dec->fmt_in.video.i_frame_rate);
1103 else if( p_sys->p_context->time_base.den > 0 )
1105 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1106 int i_tick = p_sys->p_context->ticks_per_frame;
1113 p_sys->i_pts += INT64_C(1000000) *
1114 (2 + p_sys->p_ff_pic->repeat_pict) *
1115 i_tick * p_sys->p_context->time_base.num /
1116 (2 * p_sys->p_context->time_base.den);
1120 #ifdef HAVE_AVCODEC_VA
1121 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1122 const enum PixelFormat *pi_fmt )
1124 decoder_t *p_dec = p_codec->opaque;
1125 decoder_sys_t *p_sys = p_dec->p_sys;
1129 vlc_va_Delete( p_sys->p_va );
1133 /* Try too look for a supported hw acceleration */
1134 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1136 static const char *ppsz_name[PIX_FMT_NB] = {
1137 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1138 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1139 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1140 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1141 #ifdef HAVE_AVCODEC_DXVA2
1142 [PIX_FMT_DXVA2_VLD] = "PIX_FMT_DXVA2_VLD",
1144 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1145 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1147 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1149 /* Only VLD supported */
1150 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1152 #ifdef HAVE_AVCODEC_VAAPI
1153 msg_Dbg( p_dec, "Trying VA API" );
1154 p_sys->p_va = vlc_va_NewVaapi( p_sys->i_codec_id );
1156 msg_Warn( p_dec, "Failed to open VA API" );
1161 #ifdef HAVE_AVCODEC_DXVA2
1162 if( pi_fmt[i] == PIX_FMT_DXVA2_VLD )
1164 msg_Dbg( p_dec, "Trying DXVA2" );
1165 p_sys->p_va = vlc_va_NewDxva2( VLC_OBJECT(p_dec), p_sys->i_codec_id );
1167 msg_Warn( p_dec, "Failed to open DXVA2" );
1172 p_sys->p_context->width > 0 && p_sys->p_context->height > 0 )
1174 /* We try to call vlc_va_Setup when possible to detect errors when
1175 * possible (later is too late) */
1176 if( vlc_va_Setup( p_sys->p_va,
1177 &p_sys->p_context->hwaccel_context,
1178 &p_dec->fmt_out.video.i_chroma,
1179 p_sys->p_context->width, p_sys->p_context->height ) )
1181 msg_Err( p_dec, "vlc_va_Setup failed" );
1182 vlc_va_Delete( p_sys->p_va );
1189 if( p_sys->p_va->description )
1190 msg_Info( p_dec, "Using %s for hardware decoding.", p_sys->p_va->description );
1192 /* FIXME this will disabled direct rendering
1193 * even if a new pixel format is renegociated
1195 p_sys->b_direct_rendering = false;
1196 p_sys->p_context->draw_horiz_band = NULL;
1201 /* Fallback to default behaviour */
1202 return avcodec_default_get_format( p_codec, pi_fmt );