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 LIBAVCODEC_BUILD >= 4723
156 p_dec->fmt_out.video.i_width >>= p_context->lowres;
157 p_dec->fmt_out.video.i_height >>= p_context->lowres;
160 if( !p_dec->fmt_out.i_codec )
162 /* we make conversion if possible*/
163 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
166 /* If an aspect-ratio was specified in the input format then force it */
167 if( p_dec->fmt_in.video.i_aspect )
169 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
173 #if LIBAVCODEC_BUILD >= 4687
174 p_dec->fmt_out.video.i_aspect =
175 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
176 p_context->width / p_context->height );
178 p_dec->fmt_out.video.i_aspect =
179 VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
181 if( p_dec->fmt_out.video.i_aspect == 0 )
183 p_dec->fmt_out.video.i_aspect =
184 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
188 if( p_context->frame_rate > 0 && p_context->frame_rate_base > 0 )
190 p_dec->fmt_out.video.i_frame_rate = p_context->frame_rate;
191 p_dec->fmt_out.video.i_frame_rate_base = p_context->frame_rate_base;
194 p_pic = p_dec->pf_vout_buffer_new( p_dec );
197 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
199 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
200 p_context->height, p_context->pix_fmt );
201 p_sys->b_pp_init = VLC_TRUE;
208 /*****************************************************************************
209 * InitVideo: initialize the video decoder
210 *****************************************************************************
211 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
212 * opened (done after the first decoded frame).
213 *****************************************************************************/
214 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
215 AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
217 decoder_sys_t *p_sys;
221 var_Get( p_dec->p_libvlc, "avcodec", &lockval );
223 /* Allocate the memory needed to store the decoder's structure */
224 if( ( p_dec->p_sys = p_sys =
225 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
227 msg_Err( p_dec, "out of memory" );
231 p_dec->p_sys->p_context = p_context;
232 p_dec->p_sys->p_codec = p_codec;
233 p_dec->p_sys->i_codec_id = i_codec_id;
234 p_dec->p_sys->psz_namecodec = psz_namecodec;
235 p_sys->p_ff_pic = avcodec_alloc_frame();
237 /* ***** Fill p_context with init values ***** */
238 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
239 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
240 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
241 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
243 /* ***** Get configuration of ffmpeg plugin ***** */
244 p_sys->p_context->workaround_bugs =
245 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
246 p_sys->p_context->error_resilience =
247 config_GetInt( p_dec, "ffmpeg-error-resilience" );
249 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
250 var_Get( p_dec, "grayscale", &val );
251 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
253 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
254 var_Get( p_dec, "ffmpeg-vismv", &val );
255 #if LIBAVCODEC_BUILD >= 4698
256 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
259 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
260 var_Get( p_dec, "ffmpeg-lowres", &val );
261 #if LIBAVCODEC_BUILD >= 4723
262 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
265 /* ***** ffmpeg frame skipping ***** */
266 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
267 var_Get( p_dec, "ffmpeg-hurry-up", &val );
268 p_sys->b_hurry_up = val.b_bool;
270 /* ***** ffmpeg direct rendering ***** */
271 p_sys->b_direct_rendering = 0;
272 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
273 var_Get( p_dec, "ffmpeg-dr", &val );
274 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
275 ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) &&
276 /* Apparently direct rendering doesn't work with YUV422P */
277 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
278 /* H264 uses too many reference frames */
279 p_sys->i_codec_id != CODEC_ID_H264 &&
280 !(p_sys->p_context->width % 16) && !(p_sys->p_context->height % 16) &&
281 #if LIBAVCODEC_BUILD >= 4698
282 !p_sys->p_context->debug_mv )
287 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
288 * so we need to do another check in ffmpeg_GetFrameBuf() */
289 p_sys->b_direct_rendering = 1;
294 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
295 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
298 /* ffmpeg doesn't properly release old pictures when frames are skipped */
299 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
300 if( p_sys->b_direct_rendering )
302 msg_Dbg( p_dec, "using direct rendering" );
303 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
306 /* Always use our get_buffer wrapper so we can calculate the
308 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
309 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
310 p_sys->p_context->opaque = p_dec;
312 /* ***** init this codec with special data ***** */
313 if( p_dec->fmt_in.i_extra )
315 int i_size = p_dec->fmt_in.i_extra;
317 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
321 p_sys->p_context->extradata_size = i_size + 12;
322 p = p_sys->p_context->extradata =
323 malloc( p_sys->p_context->extradata_size );
325 memcpy( &p[0], "SVQ3", 4 );
326 memset( &p[4], 0, 8 );
327 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
329 /* Now remove all atoms before the SMI one */
330 if( p_sys->p_context->extradata_size > 0x5a &&
331 strncmp( &p[0x56], "SMI ", 4 ) )
333 uint8_t *psz = &p[0x52];
335 while( psz < &p[p_sys->p_context->extradata_size - 8] )
337 int i_size = GetDWBE( psz );
340 /* FIXME handle 1 as long size */
343 if( !strncmp( &psz[4], "SMI ", 4 ) )
345 memmove( &p[0x52], psz,
346 &p[p_sys->p_context->extradata_size] - psz );
354 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
355 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
356 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
358 if( p_dec->fmt_in.i_extra == 8 )
360 p_sys->p_context->extradata_size = 8;
361 p_sys->p_context->extradata = malloc( 8 );
363 memcpy( p_sys->p_context->extradata,
364 p_dec->fmt_in.p_extra,
365 p_dec->fmt_in.i_extra );
366 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
368 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
369 p_sys->p_context->sub_id );
374 p_sys->p_context->extradata_size = i_size;
375 p_sys->p_context->extradata =
376 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
377 memcpy( p_sys->p_context->extradata,
378 p_dec->fmt_in.p_extra, i_size );
379 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
380 0, FF_INPUT_BUFFER_PADDING_SIZE );
384 /* ***** misc init ***** */
385 p_sys->input_pts = p_sys->input_dts = 0;
387 p_sys->b_has_b_frames = VLC_FALSE;
388 p_sys->b_first_frame = VLC_TRUE;
389 p_sys->i_late_frames = 0;
391 p_sys->i_buffer_orig = 1;
392 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
394 /* Set output properties */
395 p_dec->fmt_out.i_cat = VIDEO_ES;
396 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
399 #if LIBAVCODEC_BUILD >= 4688
400 if( p_dec->fmt_in.video.p_palette )
401 p_sys->p_context->palctrl =
402 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
404 p_sys->p_context->palctrl = &palette_control;
407 /* ***** Open the codec ***** */
408 vlc_mutex_lock( lockval.p_address );
409 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
411 vlc_mutex_unlock( lockval.p_address );
412 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
415 vlc_mutex_unlock( lockval.p_address );
416 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
422 /*****************************************************************************
423 * DecodeVideo: Called to decode one or more frames
424 *****************************************************************************/
425 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
427 decoder_sys_t *p_sys = p_dec->p_sys;
429 int b_null_size = VLC_FALSE;
432 if( !pp_block || !*pp_block ) return NULL;
436 if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY )
439 p_sys->i_pts = 0; /* To make sure we recover properly */
441 p_sys->input_pts = p_sys->input_dts = 0;
442 p_sys->i_late_frames = 0;
444 block_Release( p_block );
448 if( !p_dec->b_pace_control && p_sys->i_late_frames > 0 &&
449 mdate() - p_sys->i_late_frames_start > I64C(5000000) )
453 msg_Err( p_dec, "more than 5 seconds of late video -> "
454 "dropping frame (computer too slow ?)" );
455 p_sys->i_pts = 0; /* To make sure we recover properly */
457 block_Release( p_block );
458 p_sys->i_late_frames--;
462 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
464 p_sys->input_pts = p_block->i_pts;
465 p_sys->input_dts = p_block->i_dts;
467 /* Make sure we don't reuse the same timestamps twice */
468 p_block->i_pts = p_block->i_dts = 0;
471 /* TODO implement it in a better way */
472 /* A good idea could be to decode all I pictures and see for the other */
473 if( !p_dec->b_pace_control &&
474 p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
477 if( p_sys->i_late_frames < 8 )
479 p_sys->p_context->hurry_up = 2;
483 /* picture too late, won't decode
484 * but break picture until a new I, and for mpeg4 ...*/
486 p_sys->i_late_frames--; /* needed else it will never be decrease */
487 block_Release( p_block );
495 p_sys->p_context->hurry_up = 0;
499 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
501 p_sys->p_context->hurry_up = 5;
502 b_null_size = VLC_TRUE;
506 * Do the actual decoding now
509 /* Check if post-processing was enabled */
510 p_sys->b_pp = p_sys->b_pp_async;
512 /* Don't forget that ffmpeg requires a little more bytes
513 * that the real frame size */
514 if( p_block->i_buffer > 0 )
516 p_sys->i_buffer = p_block->i_buffer;
517 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
518 p_sys->i_buffer_orig )
520 free( p_sys->p_buffer_orig );
521 p_sys->i_buffer_orig =
522 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
523 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
525 p_sys->p_buffer = p_sys->p_buffer_orig;
526 p_sys->i_buffer = p_block->i_buffer;
527 p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
529 memset( p_sys->p_buffer + p_block->i_buffer, 0,
530 FF_INPUT_BUFFER_PADDING_SIZE );
532 p_block->i_buffer = 0;
535 while( p_sys->i_buffer > 0 )
537 int i_used, b_gotpicture;
540 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
542 p_sys->p_buffer, p_sys->i_buffer );
543 if( b_null_size && p_sys->p_context->width > 0 &&
544 p_sys->p_context->height > 0 )
546 /* Reparse it to not drop the I frame */
547 b_null_size = VLC_FALSE;
548 p_sys->p_context->hurry_up = 0;
549 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
551 p_sys->p_buffer, p_sys->i_buffer );
556 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
558 block_Release( p_block );
561 else if( i_used > p_sys->i_buffer )
563 i_used = p_sys->i_buffer;
567 p_sys->i_buffer -= i_used;
568 p_sys->p_buffer += i_used;
570 /* Nothing to display */
573 if( i_used == 0 ) break;
577 /* Update frame late count*/
578 if( p_sys->i_pts && p_sys->i_pts <= mdate() )
580 p_sys->i_late_frames++;
581 if( p_sys->i_late_frames == 1 )
582 p_sys->i_late_frames_start = mdate();
586 p_sys->i_late_frames = 0;
589 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
591 /* Do not display the picture */
595 if( !p_sys->p_ff_pic->opaque )
597 /* Get a new picture */
598 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
601 block_Release( p_block );
605 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
607 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
611 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
615 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
617 /* Sanity check (seems to be needed for some streams ) */
618 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
620 p_sys->b_has_b_frames = VLC_TRUE;
623 /* Send decoded frame to vout */
626 p_pic->date = p_sys->i_pts;
628 /* interpolate the next PTS */
629 if( p_sys->p_context->frame_rate > 0 )
631 p_sys->i_pts += I64C(1000000) *
632 (2 + p_sys->p_ff_pic->repeat_pict) *
633 p_sys->p_context->frame_rate_base /
634 (2 * p_sys->p_context->frame_rate);
637 if( p_sys->b_first_frame )
639 /* Hack to force display of still pictures */
640 p_sys->b_first_frame = VLC_FALSE;
641 p_pic->b_force = VLC_TRUE;
644 p_pic->i_nb_fields = p_sys->p_ff_pic->repeat_pict;
645 #if LIBAVCODEC_BUILD >= 4685
646 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
647 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
654 p_dec->pf_vout_buffer_del( p_dec, p_pic );
658 block_Release( p_block );
662 /*****************************************************************************
663 * EndVideo: decoder destruction
664 *****************************************************************************
665 * This function is called when the thread ends after a sucessful
667 *****************************************************************************/
668 void E_(EndVideoDec)( decoder_t *p_dec )
670 decoder_sys_t *p_sys = p_dec->p_sys;
672 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
675 E_(ClosePostproc)( p_dec, p_sys->p_pp );
678 free( p_sys->p_buffer_orig );
681 /*****************************************************************************
682 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
683 * picture_t structure (when not in direct rendering mode).
684 *****************************************************************************/
685 static void ffmpeg_CopyPicture( decoder_t *p_dec,
686 picture_t *p_pic, AVFrame *p_ff_pic )
688 decoder_sys_t *p_sys = p_dec->p_sys;
690 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
692 int i_plane, i_size, i_line;
693 uint8_t *p_dst, *p_src;
694 int i_src_stride, i_dst_stride;
697 if( p_sys->p_pp && p_sys->b_pp )
698 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
701 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
703 p_src = p_ff_pic->data[i_plane];
704 p_dst = p_pic->p[i_plane].p_pixels;
705 i_src_stride = p_ff_pic->linesize[i_plane];
706 i_dst_stride = p_pic->p[i_plane].i_pitch;
708 i_size = __MIN( i_src_stride, i_dst_stride );
709 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
712 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
713 p_src += i_src_stride;
714 p_dst += i_dst_stride;
723 /* we need to convert to I420 */
724 switch( p_sys->p_context->pix_fmt )
726 case PIX_FMT_YUV410P:
727 case PIX_FMT_YUV411P:
729 for( i = 0; i < p_pic->i_planes; i++ )
731 dest_pic.data[i] = p_pic->p[i].p_pixels;
732 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
734 img_convert( &dest_pic, PIX_FMT_YUV420P,
735 (AVPicture *)p_ff_pic,
736 p_sys->p_context->pix_fmt,
737 p_sys->p_context->width,
738 p_sys->p_context->height );
741 msg_Err( p_dec, "don't know how to convert chroma %i",
742 p_sys->p_context->pix_fmt );
749 /*****************************************************************************
750 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
751 *****************************************************************************
752 * It is used for direct rendering as well as to get the right PTS for each
753 * decoded picture (even in indirect rendering mode).
754 *****************************************************************************/
755 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
758 decoder_t *p_dec = (decoder_t *)p_context->opaque;
759 decoder_sys_t *p_sys = p_dec->p_sys;
762 /* Set picture PTS */
763 if( p_sys->input_pts )
765 p_ff_pic->pts = p_sys->input_pts;
767 else if( p_sys->input_dts )
769 /* Some demuxers only set the dts so let's try to find a useful
770 * timestamp from this */
771 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
772 !p_ff_pic->reference || !p_sys->i_pts )
774 p_ff_pic->pts = p_sys->input_dts;
776 else p_ff_pic->pts = 0;
778 else p_ff_pic->pts = 0;
780 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
782 p_sys->input_pts = p_sys->input_dts = 0;
785 p_ff_pic->opaque = 0;
787 /* Not much to do in indirect rendering mode */
788 if( !p_sys->b_direct_rendering || p_sys->b_pp )
790 return avcodec_default_get_buffer( p_context, p_ff_pic );
793 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
794 * so this check is necessary. */
795 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
796 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
798 msg_Dbg( p_dec, "disabling direct rendering" );
799 p_sys->b_direct_rendering = 0;
800 return avcodec_default_get_buffer( p_context, p_ff_pic );
803 /* Get a new picture */
804 //p_sys->p_vout->render.b_allow_modify_pics = 0;
805 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
808 p_sys->b_direct_rendering = 0;
809 return avcodec_default_get_buffer( p_context, p_ff_pic );
811 p_sys->p_context->draw_horiz_band = NULL;
813 p_ff_pic->opaque = (void*)p_pic;
814 p_ff_pic->type = FF_BUFFER_TYPE_USER;
815 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
816 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
817 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
818 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
820 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
821 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
822 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
823 p_ff_pic->linesize[3] = 0;
825 if( p_ff_pic->reference != 0 )
827 p_dec->pf_picture_link( p_dec, p_pic );
830 /* FIXME what is that, should give good value */
831 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
836 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
839 decoder_t *p_dec = (decoder_t *)p_context->opaque;
842 if( !p_ff_pic->opaque )
844 avcodec_default_release_buffer( p_context, p_ff_pic );
848 p_pic = (picture_t*)p_ff_pic->opaque;
850 p_ff_pic->data[0] = NULL;
851 p_ff_pic->data[1] = NULL;
852 p_ff_pic->data[2] = NULL;
853 p_ff_pic->data[3] = NULL;
855 if( p_ff_pic->reference != 0 )
857 p_dec->pf_picture_unlink( p_dec, p_pic );