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 p_dec->fmt_in.video.i_aspect = 0;
339 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS )
341 /* we are doomed. but not really, because most codecs set their pix_fmt later on */
342 p_dec->fmt_out.i_codec = VLC_CODEC_I420;
344 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
347 memset( &p_sys->palette, 0, sizeof(p_sys->palette) );
348 if( p_dec->fmt_in.video.p_palette )
350 p_sys->palette.palette_changed = 1;
352 for( int i = 0; i < __MIN( AVPALETTE_COUNT, p_dec->fmt_in.video.p_palette->i_entries ); i++ )
358 c.a[0] = p_dec->fmt_in.video.p_palette->palette[i][0];
359 c.a[1] = p_dec->fmt_in.video.p_palette->palette[i][1];
360 c.a[2] = p_dec->fmt_in.video.p_palette->palette[i][2];
361 c.a[3] = p_dec->fmt_in.video.p_palette->palette[i][3];
363 p_sys->palette.palette[i] = c.u;
365 p_sys->p_context->palctrl = &p_sys->palette;
367 p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) );
368 if( p_dec->fmt_out.video.p_palette )
369 *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette;
371 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 && p_sys->i_codec_id != CODEC_ID_CINEPAK )
373 p_sys->p_context->palctrl = &p_sys->palette;
376 /* ***** init this codec with special data ***** */
377 ffmpeg_InitCodec( p_dec );
379 /* ***** Open the codec ***** */
380 if( ffmpeg_OpenCodec( p_dec ) < 0 )
382 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
383 av_free( p_sys->p_ff_pic );
391 /*****************************************************************************
392 * DecodeVideo: Called to decode one or more frames
393 *****************************************************************************/
394 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
396 decoder_sys_t *p_sys = p_dec->p_sys;
398 int b_null_size = false;
401 if( !pp_block || !*pp_block )
404 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
406 ffmpeg_InitCodec( p_dec );
407 if( p_sys->b_delayed_open )
409 if( ffmpeg_OpenCodec( p_dec ) )
410 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
415 if( p_sys->b_delayed_open )
417 block_Release( p_block );
421 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
423 p_sys->i_pts = 0; /* To make sure we recover properly */
425 p_sys->input_pts = p_sys->input_dts = 0;
426 p_sys->i_late_frames = 0;
428 block_Release( p_block );
430 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
431 //avcodec_flush_buffers( p_sys->p_context );
435 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
437 /* Do not care about late frames when prerolling
438 * TODO avoid decoding of non reference frame
439 * (ie all B except for H264 where it depends only on nal_ref_idc) */
440 p_sys->i_late_frames = 0;
443 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
444 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
448 msg_Err( p_dec, "more than 5 seconds of late video -> "
449 "dropping frame (computer too slow ?)" );
450 p_sys->i_pts = 0; /* To make sure we recover properly */
452 block_Release( p_block );
453 p_sys->i_late_frames--;
457 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
459 p_sys->input_pts = p_block->i_pts;
460 p_sys->input_dts = p_block->i_dts;
462 /* Make sure we don't reuse the same timestamps twice */
463 p_block->i_pts = p_block->i_dts = 0;
466 /* A good idea could be to decode all I pictures and see for the other */
467 if( !p_dec->b_pace_control &&
469 (p_sys->i_late_frames > 4) )
472 if( p_sys->i_late_frames < 12 )
474 p_sys->p_context->skip_frame =
475 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
476 AVDISCARD_BIDIR : p_sys->i_skip_frame;
480 /* picture too late, won't decode
481 * but break picture until a new I, and for mpeg4 ...*/
482 p_sys->i_late_frames--; /* needed else it will never be decrease */
483 block_Release( p_block );
489 if( p_sys->b_hurry_up )
490 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
491 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
497 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
499 if( p_sys->b_hurry_up )
500 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
503 else if( !b_drawpicture )
505 /* It creates broken picture
506 * FIXME either our parser or ffmpeg is broken */
508 if( p_sys->b_hurry_up )
509 p_sys->p_context->skip_frame = __MAX( p_sys->p_context->skip_frame,
515 * Do the actual decoding now
518 /* Don't forget that ffmpeg requires a little more bytes
519 * that the real frame size */
520 if( p_block->i_buffer > 0 )
522 p_sys->b_flush = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0;
524 p_block = block_Realloc( p_block, 0,
525 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
528 p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
530 memset( p_block->p_buffer + p_block->i_buffer, 0,
531 FF_INPUT_BUFFER_PADDING_SIZE );
534 while( p_block->i_buffer > 0 || p_sys->b_flush )
536 int i_used, b_gotpicture;
539 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
541 p_block->i_buffer <= 0 && p_sys->b_flush ? NULL : p_block->p_buffer, p_block->i_buffer );
543 if( b_null_size && p_sys->p_context->width > 0 &&
544 p_sys->p_context->height > 0 &&
547 /* Reparse it to not drop the I frame */
549 if( p_sys->b_hurry_up )
550 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
551 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
552 &b_gotpicture, p_block->p_buffer,
557 p_sys->b_first_frame = true;
559 if( p_block->i_buffer <= 0 )
560 p_sys->b_flush = false;
565 msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
567 block_Release( p_block );
570 else if( i_used > p_block->i_buffer )
572 i_used = p_block->i_buffer;
576 p_block->i_buffer -= i_used;
577 p_block->p_buffer += i_used;
579 /* Nothing to display */
582 if( i_used == 0 ) break;
587 if( p_sys->p_ff_pic->pts )
588 p_sys->i_pts = p_sys->p_ff_pic->pts;
590 /* Update frame late count (except when doing preroll) */
591 mtime_t i_display_date = 0;
592 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
593 i_display_date = decoder_GetDisplayDate( p_dec, p_sys->i_pts );
595 if( i_display_date > 0 && i_display_date <= mdate() )
597 p_sys->i_late_frames++;
598 if( p_sys->i_late_frames == 1 )
599 p_sys->i_late_frames_start = mdate();
603 p_sys->i_late_frames = 0;
606 if( !b_drawpicture || ( !p_sys->p_va && !p_sys->p_ff_pic->linesize[0] ) )
608 /* Do not display the picture */
609 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
610 if( !b_drawpicture && p_pic )
611 decoder_DeletePicture( p_dec, p_pic );
613 ffmpeg_NextPts( p_dec );
617 if( !p_sys->p_ff_pic->opaque )
619 /* Get a new picture */
620 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
623 block_Release( p_block );
627 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
629 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
633 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
636 /* Sanity check (seems to be needed for some streams) */
637 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
639 p_sys->b_has_b_frames = true;
642 if( !p_dec->fmt_in.video.i_aspect )
644 /* Fetch again the aspect ratio in case it changed */
645 p_dec->fmt_in.video.i_aspect =
647 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
648 * p_sys->p_context->width / p_sys->p_context->height );
649 p_dec->fmt_in.video.i_sar_num
650 = p_sys->p_context->sample_aspect_ratio.num;
651 p_dec->fmt_in.video.i_sar_den
652 = p_sys->p_context->sample_aspect_ratio.den;
654 if( p_dec->fmt_in.video.i_aspect == 0 )
656 p_dec->fmt_in.video.i_aspect = VOUT_ASPECT_FACTOR
657 * p_sys->p_context->width / p_sys->p_context->height;
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 avcodec_flush_buffers( p_sys->p_context );
721 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
724 VaDelete( p_sys->p_va );
727 /*****************************************************************************
728 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
729 *****************************************************************************/
730 static void ffmpeg_InitCodec( decoder_t *p_dec )
732 decoder_sys_t *p_sys = p_dec->p_sys;
733 int i_size = p_dec->fmt_in.i_extra;
735 if( !i_size ) return;
737 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
741 p_sys->p_context->extradata_size = i_size + 12;
742 p = p_sys->p_context->extradata =
743 malloc( p_sys->p_context->extradata_size );
747 memcpy( &p[0], "SVQ3", 4 );
748 memset( &p[4], 0, 8 );
749 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
751 /* Now remove all atoms before the SMI one */
752 if( p_sys->p_context->extradata_size > 0x5a &&
753 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
755 uint8_t *psz = &p[0x52];
757 while( psz < &p[p_sys->p_context->extradata_size - 8] )
759 int i_size = GetDWBE( psz );
762 /* FIXME handle 1 as long size */
765 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
767 memmove( &p[0x52], psz,
768 &p[p_sys->p_context->extradata_size] - psz );
778 p_sys->p_context->extradata_size = i_size;
779 p_sys->p_context->extradata =
780 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
781 if( p_sys->p_context->extradata )
783 memcpy( p_sys->p_context->extradata,
784 p_dec->fmt_in.p_extra, i_size );
785 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
786 0, FF_INPUT_BUFFER_PADDING_SIZE );
791 /*****************************************************************************
793 *****************************************************************************/
794 static int ffmpeg_OpenCodec( decoder_t *p_dec )
796 decoder_sys_t *p_sys = p_dec->p_sys;
798 if( p_sys->p_context->extradata_size <= 0 )
800 if( p_sys->i_codec_id == CODEC_ID_VC1 ||
801 p_sys->i_codec_id == CODEC_ID_VORBIS ||
802 p_sys->i_codec_id == CODEC_ID_THEORA )
804 msg_Warn( p_dec, "waiting for extra data for codec %s",
805 p_sys->psz_namecodec );
809 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
810 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
811 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(52, 0, 0)
812 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
814 p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel;
819 ret = avcodec_open( p_sys->p_context, p_sys->p_codec );
820 vlc_avcodec_unlock();
823 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
825 p_sys->b_delayed_open = false;
829 char psz_version[128];
831 VaVersion( p_sys->p_va, psz_version, sizeof(psz_version) );
832 msg_Info( p_dec, "Using VA API version %s for hardware decoding.", psz_version );
837 /*****************************************************************************
838 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
839 * picture_t structure (when not in direct rendering mode).
840 *****************************************************************************/
841 static void ffmpeg_CopyPicture( decoder_t *p_dec,
842 picture_t *p_pic, AVFrame *p_ff_pic )
844 decoder_sys_t *p_sys = p_dec->p_sys;
848 VaExtract( p_sys->p_va, p_pic, p_ff_pic );
850 else if( TestFfmpegChroma( p_sys->p_context->pix_fmt, -1 ) == VLC_SUCCESS )
852 int i_plane, i_size, i_line;
853 uint8_t *p_dst, *p_src;
854 int i_src_stride, i_dst_stride;
856 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
858 p_src = p_ff_pic->data[i_plane];
859 p_dst = p_pic->p[i_plane].p_pixels;
860 i_src_stride = p_ff_pic->linesize[i_plane];
861 i_dst_stride = p_pic->p[i_plane].i_pitch;
863 i_size = __MIN( i_src_stride, i_dst_stride );
864 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
867 vlc_memcpy( p_dst, p_src, i_size );
868 p_src += i_src_stride;
869 p_dst += i_dst_stride;
875 msg_Err( p_dec, "don't know how to convert chroma %i",
876 p_sys->p_context->pix_fmt );
881 /*****************************************************************************
882 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
883 *****************************************************************************
884 * It is used for direct rendering as well as to get the right PTS for each
885 * decoded picture (even in indirect rendering mode).
886 *****************************************************************************/
887 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
889 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
892 decoder_t *p_dec = (decoder_t *)p_context->opaque;
893 decoder_sys_t *p_sys = p_dec->p_sys;
896 /* Set picture PTS */
897 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
900 p_ff_pic->opaque = NULL;
904 #ifdef HAVE_AVCODEC_VAAPI
905 /* hwaccel_context is not present in old fffmpeg version */
906 if( VaSetup( p_sys->p_va,
907 &p_sys->p_context->hwaccel_context, &p_dec->fmt_out.video.i_chroma,
908 p_sys->p_context->width, p_sys->p_context->height ) )
910 msg_Err( p_dec, "VaSetup failed" );
918 p_ff_pic->type = FF_BUFFER_TYPE_USER;
919 /* FIXME what is that, should give good value */
920 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
922 if( VaGrabSurface( p_sys->p_va, p_ff_pic ) )
924 msg_Err( p_dec, "VaGrabSurface failed" );
929 else if( !p_sys->b_direct_rendering )
931 /* Not much to do in indirect rendering mode */
932 return avcodec_default_get_buffer( p_context, p_ff_pic );
935 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
936 * so we need to check for direct rendering again. */
938 int i_width = p_sys->p_context->width;
939 int i_height = p_sys->p_context->height;
940 avcodec_align_dimensions( p_sys->p_context, &i_width, &i_height );
942 if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ||
943 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 ||
944 /* We only pad picture up to 16 */
945 PAD(p_sys->p_context->width,16) < i_width || PAD(p_sys->p_context->height,16) < i_height ||
946 p_context->pix_fmt == PIX_FMT_PAL8 )
947 return avcodec_default_get_buffer( p_context, p_ff_pic );
949 p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma;
951 /* Get a new picture */
952 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
954 return avcodec_default_get_buffer( p_context, p_ff_pic );
956 p_sys->p_context->draw_horiz_band = NULL;
958 p_ff_pic->opaque = (void*)p_pic;
959 p_ff_pic->type = FF_BUFFER_TYPE_USER;
960 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
961 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
962 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
963 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
965 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
966 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
967 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
968 p_ff_pic->linesize[3] = 0;
970 decoder_LinkPicture( p_dec, p_pic );
972 /* FIXME what is that, should give good value */
973 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
977 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
979 decoder_t *p_dec = (decoder_t *)p_context->opaque;
983 p_ff_pic->pts = AV_NOPTS_VALUE;
985 /* We always use default reget function, it works perfectly fine */
986 i_ret = avcodec_default_reget_buffer( p_context, p_ff_pic );
988 /* Set picture PTS if avcodec_default_reget_buffer didn't set it (through a
989 * ffmpeg_GetFrameBuf call) */
990 if( !i_ret && p_ff_pic->pts == AV_NOPTS_VALUE )
991 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
996 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
998 decoder_sys_t *p_sys = p_dec->p_sys;
1000 /* Set picture PTS */
1001 if( p_sys->input_pts )
1003 p_ff_pic->pts = p_sys->input_pts;
1005 else if( p_sys->input_dts )
1007 /* Some demuxers only set the dts so let's try to find a useful
1008 * timestamp from this */
1009 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
1010 !p_ff_pic->reference || !p_sys->i_pts )
1012 p_ff_pic->pts = p_sys->input_dts;
1024 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
1026 p_sys->input_pts = p_sys->input_dts = 0;
1030 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
1033 decoder_t *p_dec = (decoder_t *)p_context->opaque;
1034 decoder_sys_t *p_sys = p_dec->p_sys;
1038 VaUngrabSurface( p_sys->p_va, p_ff_pic );
1041 for( int i = 0; i < 4; i++ )
1042 p_ff_pic->data[i] = NULL;
1044 else if( !p_ff_pic->opaque )
1046 avcodec_default_release_buffer( p_context, p_ff_pic );
1050 picture_t *p_pic = (picture_t*)p_ff_pic->opaque;
1052 decoder_UnlinkPicture( p_dec, p_pic );
1055 for( int i = 0; i < 4; i++ )
1056 p_ff_pic->data[i] = NULL;
1060 static void ffmpeg_NextPts( decoder_t *p_dec )
1062 decoder_sys_t *p_sys = p_dec->p_sys;
1064 if( p_sys->i_pts <= 0 )
1067 /* interpolate the next PTS */
1068 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
1069 p_dec->fmt_in.video.i_frame_rate_base > 0 )
1071 p_sys->i_pts += INT64_C(1000000) *
1072 (2 + p_sys->p_ff_pic->repeat_pict) *
1073 p_dec->fmt_in.video.i_frame_rate_base /
1074 (2 * p_dec->fmt_in.video.i_frame_rate);
1076 else if( p_sys->p_context->time_base.den > 0 )
1078 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52,20,0)
1079 int i_tick = p_sys->p_context->ticks_per_frame;
1086 p_sys->i_pts += INT64_C(1000000) *
1087 (2 + p_sys->p_ff_pic->repeat_pict) *
1088 i_tick * p_sys->p_context->time_base.num /
1089 (2 * p_sys->p_context->time_base.den);
1093 #ifdef HAVE_AVCODEC_VAAPI
1094 static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_codec,
1095 const enum PixelFormat *pi_fmt )
1097 decoder_t *p_dec = p_codec->opaque;
1098 decoder_sys_t *p_sys = p_dec->p_sys;
1102 VaDelete( p_sys->p_va );
1106 /* Try too look for a supported hw acceleration */
1107 for( int i = 0; pi_fmt[i] != PIX_FMT_NONE; i++ )
1109 static const char *ppsz_name[PIX_FMT_NB] = {
1110 [PIX_FMT_VDPAU_H264] = "PIX_FMT_VDPAU_H264",
1111 [PIX_FMT_VAAPI_IDCT] = "PIX_FMT_VAAPI_IDCT",
1112 [PIX_FMT_VAAPI_VLD] = "PIX_FMT_VAAPI_VLD",
1113 [PIX_FMT_VAAPI_MOCO] = "PIX_FMT_VAAPI_MOCO",
1114 [PIX_FMT_YUYV422] = "PIX_FMT_YUYV422",
1115 [PIX_FMT_YUV420P] = "PIX_FMT_YUV420P",
1117 msg_Dbg( p_dec, "Available decoder output format %d (%s)", pi_fmt[i], ppsz_name[pi_fmt[i]] ?: "Unknown" );
1119 /* Only VLD supported */
1120 if( pi_fmt[i] == PIX_FMT_VAAPI_VLD )
1122 msg_Dbg( p_dec, "Trying VA API" );
1123 p_sys->p_va = VaNew( p_sys->i_codec_id );
1126 /* FIXME this will disabled direct rendering
1127 * even if a new pixel format is renegociated
1129 * FIXME Try to call VaSetup when possible
1130 * to detect errors when possible (later is too late) */
1131 p_sys->b_direct_rendering = false;
1132 p_sys->p_context->draw_horiz_band = NULL;
1135 msg_Warn( p_dec, "Failed to open VA API" );
1139 /* Fallback to default behaviour */
1140 return avcodec_default_get_format( p_codec, pi_fmt );