1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <vlc/decoder.h>
32 #ifdef HAVE_FFMPEG_AVCODEC_H
33 # include <ffmpeg/avcodec.h>
40 /*****************************************************************************
41 * decoder_sys_t : decoder descriptor
42 *****************************************************************************/
45 /* Common part between video and audio decoder */
50 AVCodecContext *p_context;
53 /* Video decoder specific part */
59 BITMAPINFOHEADER *p_format;
61 /* for frame skipping algo */
65 /* how many decoded frames are late */
67 mtime_t i_late_frames_start;
69 /* for direct rendering */
70 int b_direct_rendering;
72 vlc_bool_t b_has_b_frames;
74 /* Hack to force display of still pictures */
75 vlc_bool_t b_first_frame;
77 int i_buffer_orig, i_buffer;
78 char *p_buffer_orig, *p_buffer;
80 /* Postprocessing handle */
83 vlc_bool_t b_pp_async;
87 /* FIXME (dummy palette for now) */
88 static AVPaletteControl palette_control;
90 /*****************************************************************************
92 *****************************************************************************/
93 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
94 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
95 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
97 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
99 uint8_t *p = (uint8_t*)&fcc;
100 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
103 /*****************************************************************************
105 *****************************************************************************/
106 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
108 switch( i_ff_chroma )
110 case PIX_FMT_YUV420P:
111 return VLC_FOURCC('I','4','2','0');
112 case PIX_FMT_YUV422P:
113 return VLC_FOURCC('I','4','2','2');
114 case PIX_FMT_YUV444P:
115 return VLC_FOURCC('I','4','4','4');
118 return VLC_FOURCC('Y','U','Y','2');
121 return VLC_FOURCC('R','V','1','5');
123 return VLC_FOURCC('R','V','1','6');
125 return VLC_FOURCC('R','V','2','4');
127 return VLC_FOURCC('R','V','3','2');
129 return VLC_FOURCC('G','R','E','Y');
131 case PIX_FMT_YUV410P:
132 case PIX_FMT_YUV411P:
139 /* Returns a new picture buffer */
140 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
141 AVCodecContext *p_context )
143 decoder_sys_t *p_sys = p_dec->p_sys;
146 p_dec->fmt_out.video.i_width = p_context->width;
147 p_dec->fmt_out.video.i_height = p_context->height;
148 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
150 if( !p_context->width || !p_context->height )
152 return NULL; /* invalid display size */
155 if( !p_dec->fmt_out.i_codec )
157 /* we make conversion if possible*/
158 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
161 /* If an aspect-ratio was specified in the input format then force it */
162 if( p_dec->fmt_in.video.i_aspect )
164 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
168 #if LIBAVCODEC_BUILD >= 4687
169 p_dec->fmt_out.video.i_aspect =
170 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
171 p_context->width / p_context->height );
173 p_dec->fmt_out.video.i_aspect =
174 VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
176 if( p_dec->fmt_out.video.i_aspect == 0 )
178 p_dec->fmt_out.video.i_aspect =
179 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
183 p_pic = p_dec->pf_vout_buffer_new( p_dec );
186 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
188 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
189 p_context->height, p_context->pix_fmt );
190 p_sys->b_pp_init = VLC_TRUE;
197 /*****************************************************************************
198 * InitVideo: initialize the video decoder
199 *****************************************************************************
200 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
201 * opened (done after the first decoded frame).
202 *****************************************************************************/
203 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
204 AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
206 decoder_sys_t *p_sys;
210 var_Get( p_dec->p_libvlc, "avcodec", &lockval );
212 /* Allocate the memory needed to store the decoder's structure */
213 if( ( p_dec->p_sys = p_sys =
214 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
216 msg_Err( p_dec, "out of memory" );
220 p_dec->p_sys->p_context = p_context;
221 p_dec->p_sys->p_codec = p_codec;
222 p_dec->p_sys->i_codec_id = i_codec_id;
223 p_dec->p_sys->psz_namecodec = psz_namecodec;
224 p_sys->p_ff_pic = avcodec_alloc_frame();
226 /* ***** Fill p_context with init values ***** */
227 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
228 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
229 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
230 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
232 /* ***** Get configuration of ffmpeg plugin ***** */
233 p_sys->p_context->workaround_bugs =
234 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
235 p_sys->p_context->error_resilience =
236 config_GetInt( p_dec, "ffmpeg-error-resilience" );
238 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
239 var_Get( p_dec, "grayscale", &val );
240 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
242 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
243 var_Get( p_dec, "ffmpeg-vismv", &val );
244 #if LIBAVCODEC_BUILD >= 4698
245 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
248 /* ***** ffmpeg frame skipping ***** */
249 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
250 var_Get( p_dec, "ffmpeg-hurry-up", &val );
251 p_sys->b_hurry_up = val.b_bool;
253 /* ***** ffmpeg direct rendering ***** */
254 p_sys->b_direct_rendering = 0;
255 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
256 var_Get( p_dec, "ffmpeg-dr", &val );
257 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
258 ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) &&
259 /* Apparently direct rendering doesn't work with YUV422P */
260 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
261 /* H264 uses too many reference frames */
262 p_sys->i_codec_id != CODEC_ID_H264 &&
263 !(p_sys->p_context->width % 16) && !(p_sys->p_context->height % 16) &&
264 #if LIBAVCODEC_BUILD >= 4698
265 !p_sys->p_context->debug_mv )
270 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
271 * so we need to do another check in ffmpeg_GetFrameBuf() */
272 p_sys->b_direct_rendering = 1;
277 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
278 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
281 /* ffmpeg doesn't properly release old pictures when frames are skipped */
282 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
283 if( p_sys->b_direct_rendering )
285 msg_Dbg( p_dec, "using direct rendering" );
286 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
289 /* Always use our get_buffer wrapper so we can calculate the
291 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
292 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
293 p_sys->p_context->opaque = p_dec;
295 /* ***** init this codec with special data ***** */
296 if( p_dec->fmt_in.i_extra )
298 int i_size = p_dec->fmt_in.i_extra;
300 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
304 p_sys->p_context->extradata_size = i_size + 12;
305 p = p_sys->p_context->extradata =
306 malloc( p_sys->p_context->extradata_size );
308 memcpy( &p[0], "SVQ3", 4 );
309 memset( &p[4], 0, 8 );
310 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
312 /* Now remove all atoms before the SMI one */
313 if( p_sys->p_context->extradata_size > 0x5a &&
314 strncmp( &p[0x56], "SMI ", 4 ) )
316 uint8_t *psz = &p[0x52];
318 while( psz < &p[p_sys->p_context->extradata_size - 8] )
320 int i_size = GetDWBE( psz );
323 /* FIXME handle 1 as long size */
326 if( !strncmp( &psz[4], "SMI ", 4 ) )
328 memmove( &p[0x52], psz,
329 &p[p_sys->p_context->extradata_size] - psz );
337 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
338 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
339 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
341 if( p_dec->fmt_in.i_extra == 8 )
343 p_sys->p_context->extradata_size = 8;
344 p_sys->p_context->extradata = malloc( 8 );
346 memcpy( p_sys->p_context->extradata,
347 p_dec->fmt_in.p_extra,
348 p_dec->fmt_in.i_extra );
349 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
351 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
352 p_sys->p_context->sub_id );
355 else if( p_dec->fmt_in.i_codec != VLC_FOURCC( 'a', 'v', 'c', '1' ) )
357 p_sys->p_context->extradata_size = i_size;
358 p_sys->p_context->extradata =
359 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
360 memcpy( p_sys->p_context->extradata,
361 p_dec->fmt_in.p_extra, i_size );
362 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
363 0, FF_INPUT_BUFFER_PADDING_SIZE );
367 /* ***** misc init ***** */
368 p_sys->input_pts = p_sys->input_dts = 0;
370 p_sys->b_has_b_frames = VLC_FALSE;
371 p_sys->b_first_frame = VLC_TRUE;
372 p_sys->i_late_frames = 0;
374 p_sys->i_buffer_orig = 1;
375 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer );
377 /* Set output properties */
378 p_dec->fmt_out.i_cat = VIDEO_ES;
379 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
382 #if LIBAVCODEC_BUILD >= 4688
383 if( p_dec->fmt_in.video.p_palette )
384 p_sys->p_context->palctrl =
385 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
387 p_sys->p_context->palctrl = &palette_control;
390 /* ***** Open the codec ***** */
391 vlc_mutex_lock( lockval.p_address );
392 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
394 vlc_mutex_unlock( lockval.p_address );
395 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
398 vlc_mutex_unlock( lockval.p_address );
399 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
405 /*****************************************************************************
406 * DecodeVideo: Called to decode one or more frames
407 *****************************************************************************/
408 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
410 decoder_sys_t *p_sys = p_dec->p_sys;
412 int b_null_size = VLC_FALSE;
415 if( !pp_block || !*pp_block ) return NULL;
419 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
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 );
431 if( p_sys->i_late_frames > 0 &&
432 mdate() - p_sys->i_late_frames_start > I64C(5000000) )
436 msg_Err( p_dec, "more than 5 seconds of late video -> "
437 "dropping frame (computer too slow ?)" );
438 p_sys->i_pts = 0; /* To make sure we recover properly */
440 block_Release( p_block );
441 p_sys->i_late_frames--;
445 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
447 p_sys->input_pts = p_block->i_pts;
448 p_sys->input_dts = p_block->i_dts;
450 /* Make sure we don't reuse the same timestamps twice */
451 p_block->i_pts = p_block->i_dts = 0;
454 /* TODO implement it in a better way */
455 /* A good idea could be to decode all I pictures and see for the other */
456 if( p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
459 if( p_sys->i_late_frames < 8 )
461 p_sys->p_context->hurry_up = 2;
465 /* picture too late, won't decode
466 * but break picture until a new I, and for mpeg4 ...*/
468 p_sys->i_late_frames--; /* needed else it will never be decrease */
469 block_Release( p_block );
477 p_sys->p_context->hurry_up = 0;
481 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
483 p_sys->p_context->hurry_up = 5;
484 b_null_size = VLC_TRUE;
488 * Do the actual decoding now
491 /* Check if post-processing was enabled */
492 p_sys->b_pp = p_sys->b_pp_async;
494 /* Don't forget that ffmpeg requires a little more bytes
495 * that the real frame size */
496 if( p_block->i_buffer > 0 )
498 p_sys->i_buffer = p_block->i_buffer;
499 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
500 p_sys->i_buffer_orig )
502 free( p_sys->p_buffer_orig );
503 p_sys->i_buffer_orig =
504 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
505 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
507 p_sys->p_buffer = p_sys->p_buffer_orig;
508 p_sys->i_buffer = p_block->i_buffer;
509 p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
511 memset( p_sys->p_buffer + p_block->i_buffer, 0,
512 FF_INPUT_BUFFER_PADDING_SIZE );
514 p_block->i_buffer = 0;
517 while( p_sys->i_buffer > 0 )
519 int i_used, b_gotpicture;
522 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
524 p_sys->p_buffer, p_sys->i_buffer );
525 if( b_null_size && p_sys->p_context->width > 0 &&
526 p_sys->p_context->height > 0 )
528 /* Reparse it to not drop the I frame */
529 b_null_size = VLC_FALSE;
530 p_sys->p_context->hurry_up = 0;
531 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
533 p_sys->p_buffer, p_sys->i_buffer );
538 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
540 block_Release( p_block );
543 else if( i_used > p_sys->i_buffer )
545 i_used = p_sys->i_buffer;
549 p_sys->i_buffer -= i_used;
550 p_sys->p_buffer += i_used;
552 /* Nothing to display */
555 if( i_used == 0 ) break;
559 /* Update frame late count*/
560 if( p_sys->i_pts && p_sys->i_pts <= mdate() )
562 p_sys->i_late_frames++;
563 if( p_sys->i_late_frames == 1 )
564 p_sys->i_late_frames_start = mdate();
568 p_sys->i_late_frames = 0;
571 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
573 /* Do not display the picture */
577 if( !p_sys->p_ff_pic->opaque )
579 /* Get a new picture */
580 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
583 block_Release( p_block );
587 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
589 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
593 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
597 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
599 /* Sanity check (seems to be needed for some streams ) */
600 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
602 p_sys->b_has_b_frames = VLC_TRUE;
605 /* Send decoded frame to vout */
608 p_pic->date = p_sys->i_pts;
610 /* interpolate the next PTS */
611 if( p_sys->p_context->frame_rate > 0 )
613 p_sys->i_pts += I64C(1000000) *
614 (2 + p_sys->p_ff_pic->repeat_pict) *
615 p_sys->p_context->frame_rate_base /
616 (2 * p_sys->p_context->frame_rate);
619 if( p_sys->b_first_frame )
621 /* Hack to force display of still pictures */
622 p_sys->b_first_frame = VLC_FALSE;
623 p_pic->b_force = VLC_TRUE;
629 p_dec->pf_vout_buffer_del( p_dec, p_pic );
633 block_Release( p_block );
637 /*****************************************************************************
638 * EndVideo: decoder destruction
639 *****************************************************************************
640 * This function is called when the thread ends after a sucessful
642 *****************************************************************************/
643 void E_(EndVideoDec)( decoder_t *p_dec )
645 decoder_sys_t *p_sys = p_dec->p_sys;
647 if( p_sys->p_ff_pic ) free( p_sys->p_ff_pic );
650 E_(ClosePostproc)( p_dec, p_sys->p_pp );
653 free( p_sys->p_buffer_orig );
656 /*****************************************************************************
657 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
658 * picture_t structure (when not in direct rendering mode).
659 *****************************************************************************/
660 static void ffmpeg_CopyPicture( decoder_t *p_dec,
661 picture_t *p_pic, AVFrame *p_ff_pic )
663 decoder_sys_t *p_sys = p_dec->p_sys;
665 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
667 int i_plane, i_size, i_line;
668 uint8_t *p_dst, *p_src;
669 int i_src_stride, i_dst_stride;
672 if( p_sys->p_pp && p_sys->b_pp )
673 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
676 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
678 p_src = p_ff_pic->data[i_plane];
679 p_dst = p_pic->p[i_plane].p_pixels;
680 i_src_stride = p_ff_pic->linesize[i_plane];
681 i_dst_stride = p_pic->p[i_plane].i_pitch;
683 i_size = __MIN( i_src_stride, i_dst_stride );
684 for( i_line = 0; i_line < p_pic->p[i_plane].i_lines; i_line++ )
686 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
687 p_src += i_src_stride;
688 p_dst += i_dst_stride;
697 /* we need to convert to I420 */
698 switch( p_sys->p_context->pix_fmt )
700 case PIX_FMT_YUV410P:
701 case PIX_FMT_YUV411P:
703 for( i = 0; i < p_pic->i_planes; i++ )
705 dest_pic.data[i] = p_pic->p[i].p_pixels;
706 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
708 img_convert( &dest_pic, PIX_FMT_YUV420P,
709 (AVPicture *)p_ff_pic,
710 p_sys->p_context->pix_fmt,
711 p_sys->p_context->width,
712 p_sys->p_context->height );
715 msg_Err( p_dec, "don't know how to convert chroma %i",
716 p_sys->p_context->pix_fmt );
723 /*****************************************************************************
724 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
725 *****************************************************************************
726 * It is used for direct rendering as well as to get the right PTS for each
727 * decoded picture (even in indirect rendering mode).
728 *****************************************************************************/
729 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
732 decoder_t *p_dec = (decoder_t *)p_context->opaque;
733 decoder_sys_t *p_sys = p_dec->p_sys;
736 /* Set picture PTS */
737 if( p_sys->input_pts )
739 p_ff_pic->pts = p_sys->input_pts;
741 else if( p_sys->input_dts )
743 /* Some demuxers only set the dts so let's try to find a useful
744 * timestamp from this */
745 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
746 !p_ff_pic->reference || !p_sys->i_pts )
748 p_ff_pic->pts = p_sys->input_dts;
750 else p_ff_pic->pts = 0;
752 else p_ff_pic->pts = 0;
754 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
756 p_sys->input_pts = p_sys->input_dts = 0;
759 p_ff_pic->opaque = 0;
761 /* Not much to do in indirect rendering mode */
762 if( !p_sys->b_direct_rendering || p_sys->b_pp )
764 return avcodec_default_get_buffer( p_context, p_ff_pic );
767 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
768 * so this check is necessary. */
769 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
770 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
772 msg_Dbg( p_dec, "disabling direct rendering" );
773 p_sys->b_direct_rendering = 0;
774 return avcodec_default_get_buffer( p_context, p_ff_pic );
777 /* Get a new picture */
778 //p_sys->p_vout->render.b_allow_modify_pics = 0;
779 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
782 p_sys->b_direct_rendering = 0;
783 return avcodec_default_get_buffer( p_context, p_ff_pic );
785 p_sys->p_context->draw_horiz_band = NULL;
787 p_ff_pic->opaque = (void*)p_pic;
788 p_ff_pic->type = FF_BUFFER_TYPE_USER;
789 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
790 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
791 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
792 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
794 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
795 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
796 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
797 p_ff_pic->linesize[3] = 0;
799 if( p_ff_pic->reference != 0 )
801 p_dec->pf_picture_link( p_dec, p_pic );
804 /* FIXME what is that, should give good value */
805 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
810 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
813 decoder_t *p_dec = (decoder_t *)p_context->opaque;
816 if( !p_ff_pic->opaque )
818 avcodec_default_release_buffer( p_context, p_ff_pic );
822 p_pic = (picture_t*)p_ff_pic->opaque;
824 p_ff_pic->data[0] = NULL;
825 p_ff_pic->data[1] = NULL;
826 p_ff_pic->data[2] = NULL;
827 p_ff_pic->data[3] = NULL;
829 if( p_ff_pic->reference != 0 )
831 p_dec->pf_picture_unlink( p_dec, p_pic );