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 *****************************************************************************/
29 #include <vlc/decoder.h>
30 #include <vlc/input.h> /* hmmm, just for INPUT_RATE_DEFAULT */
33 #ifdef HAVE_FFMPEG_AVCODEC_H
34 # include <ffmpeg/avcodec.h>
41 /*****************************************************************************
42 * decoder_sys_t : decoder descriptor
43 *****************************************************************************/
46 /* Common part between video and audio decoder */
51 AVCodecContext *p_context;
54 /* Video decoder specific part */
60 BITMAPINFOHEADER *p_format;
62 /* for frame skipping algo */
66 /* how many decoded frames are late */
68 mtime_t i_late_frames_start;
70 /* for direct rendering */
71 int b_direct_rendering;
73 vlc_bool_t b_has_b_frames;
75 /* Hack to force display of still pictures */
76 vlc_bool_t b_first_frame;
78 int i_buffer_orig, i_buffer;
79 char *p_buffer_orig, *p_buffer;
81 /* Postprocessing handle */
84 vlc_bool_t b_pp_async;
88 /* FIXME (dummy palette for now) */
89 static AVPaletteControl palette_control;
91 /*****************************************************************************
93 *****************************************************************************/
94 static void ffmpeg_InitCodec ( decoder_t * );
95 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
96 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
97 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
99 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
101 uint8_t *p = (uint8_t*)&fcc;
102 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
105 /*****************************************************************************
107 *****************************************************************************/
108 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
110 switch( i_ff_chroma )
112 case PIX_FMT_YUV420P:
113 case PIX_FMT_YUVJ420P: /* Hacky but better then chroma conversion */
114 return VLC_FOURCC('I','4','2','0');
115 case PIX_FMT_YUV422P:
116 case PIX_FMT_YUVJ422P: /* Hacky but better then chroma conversion */
117 return VLC_FOURCC('I','4','2','2');
118 case PIX_FMT_YUV444P:
119 case PIX_FMT_YUVJ444P: /* Hacky but better then chroma conversion */
120 return VLC_FOURCC('I','4','4','4');
123 return VLC_FOURCC('Y','U','Y','2');
126 return VLC_FOURCC('R','V','1','5');
128 return VLC_FOURCC('R','V','1','6');
130 return VLC_FOURCC('R','V','2','4');
132 return VLC_FOURCC('R','V','3','2');
134 return VLC_FOURCC('G','R','E','Y');
136 case PIX_FMT_YUV410P:
137 case PIX_FMT_YUV411P:
144 /* Returns a new picture buffer */
145 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
146 AVCodecContext *p_context )
148 decoder_sys_t *p_sys = p_dec->p_sys;
151 p_dec->fmt_out.video.i_width = p_context->width;
152 p_dec->fmt_out.video.i_height = p_context->height;
153 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
155 if( !p_context->width || !p_context->height )
157 return NULL; /* invalid display size */
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 );
177 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
178 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
180 p_dec->fmt_out.video.i_aspect =
181 VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
183 if( p_dec->fmt_out.video.i_aspect == 0 )
185 p_dec->fmt_out.video.i_aspect =
186 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
190 if( p_dec->fmt_out.video.i_frame_rate > 0 &&
191 p_dec->fmt_out.video.i_frame_rate_base > 0 )
193 p_dec->fmt_out.video.i_frame_rate =
194 p_dec->fmt_in.video.i_frame_rate;
195 p_dec->fmt_out.video.i_frame_rate_base =
196 p_dec->fmt_out.video.i_frame_rate_base;
199 #if LIBAVCODEC_BUILD >= 4754
200 if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
202 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
203 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
206 if( p_context->frame_rate > 0 && p_context->frame_rate_base > 0 )
208 p_dec->fmt_out.video.i_frame_rate = p_context->frame_rate;
209 p_dec->fmt_out.video.i_frame_rate_base = p_context->frame_rate_base;
213 p_pic = p_dec->pf_vout_buffer_new( p_dec );
216 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
218 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
219 p_context->height, p_context->pix_fmt );
220 p_sys->b_pp_init = VLC_TRUE;
227 /*****************************************************************************
228 * InitVideo: initialize the video decoder
229 *****************************************************************************
230 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
231 * opened (done after the first decoded frame).
232 *****************************************************************************/
233 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
234 AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
236 decoder_sys_t *p_sys;
240 var_Get( p_dec->p_libvlc, "avcodec", &lockval );
242 /* Allocate the memory needed to store the decoder's structure */
243 if( ( p_dec->p_sys = p_sys =
244 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
246 msg_Err( p_dec, "out of memory" );
250 p_dec->p_sys->p_context = p_context;
251 p_dec->p_sys->p_codec = p_codec;
252 p_dec->p_sys->i_codec_id = i_codec_id;
253 p_dec->p_sys->psz_namecodec = psz_namecodec;
254 p_sys->p_ff_pic = avcodec_alloc_frame();
256 /* ***** Fill p_context with init values ***** */
257 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
258 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
259 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
260 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
262 /* ***** Get configuration of ffmpeg plugin ***** */
263 p_sys->p_context->workaround_bugs =
264 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
265 p_sys->p_context->error_resilience =
266 config_GetInt( p_dec, "ffmpeg-error-resilience" );
268 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
269 var_Get( p_dec, "grayscale", &val );
270 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
272 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
273 var_Get( p_dec, "ffmpeg-vismv", &val );
274 #if LIBAVCODEC_BUILD >= 4698
275 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
278 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
279 var_Get( p_dec, "ffmpeg-lowres", &val );
280 #if LIBAVCODEC_BUILD >= 4723
281 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
284 var_Create( p_dec, "ffmpeg-skiploopfilter",
285 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
286 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
287 #if LIBAVCODEC_BUILD >= 4758
288 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
289 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
290 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
291 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
294 /* ***** ffmpeg frame skipping ***** */
295 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
296 var_Get( p_dec, "ffmpeg-hurry-up", &val );
297 p_sys->b_hurry_up = val.b_bool;
299 /* ***** ffmpeg direct rendering ***** */
300 p_sys->b_direct_rendering = 0;
301 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
302 var_Get( p_dec, "ffmpeg-dr", &val );
303 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
304 /* Apparently direct rendering doesn't work with YUV422P */
305 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
306 /* H264 uses too many reference frames */
307 p_sys->i_codec_id != CODEC_ID_H264 &&
308 #if LIBAVCODEC_BUILD >= 4698
309 !p_sys->p_context->debug_mv )
314 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
315 * so we need to do another check in ffmpeg_GetFrameBuf() */
316 p_sys->b_direct_rendering = 1;
321 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
322 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
325 /* ffmpeg doesn't properly release old pictures when frames are skipped */
326 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
327 if( p_sys->b_direct_rendering )
329 msg_Dbg( p_dec, "using direct rendering" );
330 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
333 /* Always use our get_buffer wrapper so we can calculate the
335 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
336 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
337 p_sys->p_context->opaque = p_dec;
339 /* ***** init this codec with special data ***** */
340 ffmpeg_InitCodec( p_dec );
342 /* ***** misc init ***** */
343 p_sys->input_pts = p_sys->input_dts = 0;
345 p_sys->b_has_b_frames = VLC_FALSE;
346 p_sys->b_first_frame = VLC_TRUE;
347 p_sys->i_late_frames = 0;
349 p_sys->i_buffer_orig = 1;
350 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
352 /* Set output properties */
353 p_dec->fmt_out.i_cat = VIDEO_ES;
354 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
357 #if LIBAVCODEC_BUILD >= 4688
358 if( p_dec->fmt_in.video.p_palette )
359 p_sys->p_context->palctrl =
360 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
362 p_sys->p_context->palctrl = &palette_control;
365 /* ***** Open the codec ***** */
366 vlc_mutex_lock( lockval.p_address );
367 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
369 vlc_mutex_unlock( lockval.p_address );
370 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
374 vlc_mutex_unlock( lockval.p_address );
375 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
381 /*****************************************************************************
382 * DecodeVideo: Called to decode one or more frames
383 *****************************************************************************/
384 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
386 decoder_sys_t *p_sys = p_dec->p_sys;
388 int b_null_size = VLC_FALSE;
391 if( !pp_block || !*pp_block ) return NULL;
393 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
394 ffmpeg_InitCodec( p_dec );
398 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
401 p_sys->i_pts = 0; /* To make sure we recover properly */
403 p_sys->input_pts = p_sys->input_dts = 0;
404 p_sys->i_late_frames = 0;
406 block_Release( p_block );
410 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
412 /* Do not care about late frames when prerolling
413 * TODO avoid decoding of non reference frame
414 * (ie all B except for H264 where it depends only on nal_ref_idc) */
415 p_sys->i_late_frames = 0;
418 if( !p_dec->b_pace_control && p_sys->i_late_frames > 0 &&
419 mdate() - p_sys->i_late_frames_start > I64C(5000000) )
423 msg_Err( p_dec, "more than 5 seconds of late video -> "
424 "dropping frame (computer too slow ?)" );
425 p_sys->i_pts = 0; /* To make sure we recover properly */
427 block_Release( p_block );
428 p_sys->i_late_frames--;
432 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
434 p_sys->input_pts = p_block->i_pts;
435 p_sys->input_dts = p_block->i_dts;
437 /* Make sure we don't reuse the same timestamps twice */
438 p_block->i_pts = p_block->i_dts = 0;
441 /* TODO implement it in a better way */
442 /* A good idea could be to decode all I pictures and see for the other */
443 if( !p_dec->b_pace_control &&
444 p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
447 if( p_sys->i_late_frames < 8 )
449 p_sys->p_context->hurry_up = 2;
453 /* picture too late, won't decode
454 * but break picture until a new I, and for mpeg4 ...*/
456 p_sys->i_late_frames--; /* needed else it will never be decrease */
457 block_Release( p_block );
464 if (!(p_block->i_flags & BLOCK_FLAG_PREROLL))
467 p_sys->p_context->hurry_up = 0;
472 p_sys->p_context->hurry_up = 1;
477 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
479 p_sys->p_context->hurry_up = 5;
480 b_null_size = VLC_TRUE;
484 * Do the actual decoding now
487 /* Check if post-processing was enabled */
488 p_sys->b_pp = p_sys->b_pp_async;
490 /* Don't forget that ffmpeg requires a little more bytes
491 * that the real frame size */
492 if( p_block->i_buffer > 0 )
494 p_sys->i_buffer = p_block->i_buffer;
495 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
496 p_sys->i_buffer_orig )
498 free( p_sys->p_buffer_orig );
499 p_sys->i_buffer_orig =
500 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
501 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
503 p_sys->p_buffer = p_sys->p_buffer_orig;
504 p_sys->i_buffer = p_block->i_buffer;
505 p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
507 memset( p_sys->p_buffer + p_block->i_buffer, 0,
508 FF_INPUT_BUFFER_PADDING_SIZE );
510 p_block->i_buffer = 0;
513 while( p_sys->i_buffer > 0 )
515 int i_used, b_gotpicture;
518 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
520 p_sys->p_buffer, p_sys->i_buffer );
521 if( b_null_size && p_sys->p_context->width > 0 &&
522 p_sys->p_context->height > 0 )
524 /* Reparse it to not drop the I frame */
525 b_null_size = VLC_FALSE;
526 p_sys->p_context->hurry_up = 0;
527 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
529 p_sys->p_buffer, p_sys->i_buffer );
534 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
536 block_Release( p_block );
539 else if( i_used > p_sys->i_buffer )
541 i_used = p_sys->i_buffer;
545 p_sys->i_buffer -= i_used;
546 p_sys->p_buffer += i_used;
548 /* Nothing to display */
551 if( i_used == 0 ) break;
555 /* Update frame late count (except when doing preroll) */
556 if( p_sys->i_pts && p_sys->i_pts <= mdate() &&
557 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
559 p_sys->i_late_frames++;
560 if( p_sys->i_late_frames == 1 )
561 p_sys->i_late_frames_start = mdate();
565 p_sys->i_late_frames = 0;
568 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
570 /* Do not display the picture */
574 if( !p_sys->p_ff_pic->opaque )
576 /* Get a new picture */
577 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
580 block_Release( p_block );
584 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
586 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
590 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
594 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
596 /* Sanity check (seems to be needed for some streams) */
597 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
599 p_sys->b_has_b_frames = VLC_TRUE;
602 if( !p_dec->fmt_in.video.i_aspect )
604 /* Fetch again the aspect ratio in case it changed */
605 #if LIBAVCODEC_BUILD >= 4687
606 p_dec->fmt_out.video.i_aspect =
608 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
609 * p_sys->p_context->width / p_sys->p_context->height );
610 p_dec->fmt_out.video.i_sar_num
611 = p_sys->p_context->sample_aspect_ratio.num;
612 p_dec->fmt_out.video.i_sar_den
613 = p_sys->p_context->sample_aspect_ratio.den;
615 p_dec->fmt_out.video.i_aspect =
616 VOUT_ASPECT_FACTOR * p_sys->p_context->aspect_ratio;
618 if( p_dec->fmt_out.video.i_aspect == 0 )
620 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
621 * p_sys->p_context->width / p_sys->p_context->height;
625 /* Send decoded frame to vout */
628 p_pic->date = p_sys->i_pts;
630 /* interpolate the next PTS */
631 #if LIBAVCODEC_BUILD >= 4754
632 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
633 p_dec->fmt_in.video.i_frame_rate_base > 0 )
635 p_sys->i_pts += I64C(1000000) *
636 (2 + p_sys->p_ff_pic->repeat_pict) *
637 p_dec->fmt_in.video.i_frame_rate_base *
638 p_block->i_rate / INPUT_RATE_DEFAULT /
639 (2 * p_dec->fmt_in.video.i_frame_rate);
641 else if( p_sys->p_context->time_base.den > 0 )
643 p_sys->i_pts += I64C(1000000) *
644 (2 + p_sys->p_ff_pic->repeat_pict) *
645 p_sys->p_context->time_base.num *
646 p_block->i_rate / INPUT_RATE_DEFAULT /
647 (2 * p_sys->p_context->time_base.den);
650 if( p_sys->p_context->frame_rate > 0 )
652 p_sys->i_pts += I64C(1000000) *
653 (2 + p_sys->p_ff_pic->repeat_pict) *
654 p_sys->p_context->frame_rate_base *
655 p_block->i_rate / INPUT_RATE_DEFAULT /
656 (2 * p_sys->p_context->frame_rate);
660 if( p_sys->b_first_frame )
662 /* Hack to force display of still pictures */
663 p_sys->b_first_frame = VLC_FALSE;
664 p_pic->b_force = VLC_TRUE;
667 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
668 #if LIBAVCODEC_BUILD >= 4685
669 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
670 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
677 p_dec->pf_vout_buffer_del( p_dec, p_pic );
681 block_Release( p_block );
685 /*****************************************************************************
686 * EndVideo: decoder destruction
687 *****************************************************************************
688 * This function is called when the thread ends after a successful
690 *****************************************************************************/
691 void E_(EndVideoDec)( decoder_t *p_dec )
693 decoder_sys_t *p_sys = p_dec->p_sys;
695 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
698 E_(ClosePostproc)( p_dec, p_sys->p_pp );
701 free( p_sys->p_buffer_orig );
704 /*****************************************************************************
705 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
706 *****************************************************************************/
707 static void ffmpeg_InitCodec( decoder_t *p_dec )
709 decoder_sys_t *p_sys = p_dec->p_sys;
710 int i_size = p_dec->fmt_in.i_extra;
712 if( !i_size ) return;
714 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
718 p_sys->p_context->extradata_size = i_size + 12;
719 p = p_sys->p_context->extradata =
720 malloc( p_sys->p_context->extradata_size );
722 memcpy( &p[0], "SVQ3", 4 );
723 memset( &p[4], 0, 8 );
724 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
726 /* Now remove all atoms before the SMI one */
727 if( p_sys->p_context->extradata_size > 0x5a &&
728 strncmp( &p[0x56], "SMI ", 4 ) )
730 uint8_t *psz = &p[0x52];
732 while( psz < &p[p_sys->p_context->extradata_size - 8] )
734 int i_size = GetDWBE( psz );
737 /* FIXME handle 1 as long size */
740 if( !strncmp( &psz[4], "SMI ", 4 ) )
742 memmove( &p[0x52], psz,
743 &p[p_sys->p_context->extradata_size] - psz );
751 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
752 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
753 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
755 if( p_dec->fmt_in.i_extra == 8 )
757 p_sys->p_context->extradata_size = 8;
758 p_sys->p_context->extradata = malloc( 8 );
760 memcpy( p_sys->p_context->extradata,
761 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
762 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
764 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
765 p_sys->p_context->sub_id );
770 p_sys->p_context->extradata_size = i_size;
771 p_sys->p_context->extradata =
772 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
773 memcpy( p_sys->p_context->extradata,
774 p_dec->fmt_in.p_extra, i_size );
775 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
776 0, FF_INPUT_BUFFER_PADDING_SIZE );
780 /*****************************************************************************
781 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
782 * picture_t structure (when not in direct rendering mode).
783 *****************************************************************************/
784 static void ffmpeg_CopyPicture( decoder_t *p_dec,
785 picture_t *p_pic, AVFrame *p_ff_pic )
787 decoder_sys_t *p_sys = p_dec->p_sys;
789 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
791 int i_plane, i_size, i_line;
792 uint8_t *p_dst, *p_src;
793 int i_src_stride, i_dst_stride;
796 if( p_sys->p_pp && p_sys->b_pp )
797 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
800 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
802 p_src = p_ff_pic->data[i_plane];
803 p_dst = p_pic->p[i_plane].p_pixels;
804 i_src_stride = p_ff_pic->linesize[i_plane];
805 i_dst_stride = p_pic->p[i_plane].i_pitch;
807 i_size = __MIN( i_src_stride, i_dst_stride );
808 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
811 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
812 p_src += i_src_stride;
813 p_dst += i_dst_stride;
822 /* we need to convert to I420 */
823 switch( p_sys->p_context->pix_fmt )
825 case PIX_FMT_YUV410P:
826 case PIX_FMT_YUV411P:
829 for( i = 0; i < p_pic->i_planes; i++ )
831 dest_pic.data[i] = p_pic->p[i].p_pixels;
832 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
834 img_convert( &dest_pic, PIX_FMT_YUV420P,
835 (AVPicture *)p_ff_pic,
836 p_sys->p_context->pix_fmt,
837 p_sys->p_context->width,
838 p_sys->p_context->height );
841 msg_Err( p_dec, "don't know how to convert chroma %i",
842 p_sys->p_context->pix_fmt );
849 /*****************************************************************************
850 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
851 *****************************************************************************
852 * It is used for direct rendering as well as to get the right PTS for each
853 * decoded picture (even in indirect rendering mode).
854 *****************************************************************************/
855 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
858 decoder_t *p_dec = (decoder_t *)p_context->opaque;
859 decoder_sys_t *p_sys = p_dec->p_sys;
862 /* Set picture PTS */
863 if( p_sys->input_pts )
865 p_ff_pic->pts = p_sys->input_pts;
867 else if( p_sys->input_dts )
869 /* Some demuxers only set the dts so let's try to find a useful
870 * timestamp from this */
871 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
872 !p_ff_pic->reference || !p_sys->i_pts )
874 p_ff_pic->pts = p_sys->input_dts;
876 else p_ff_pic->pts = 0;
878 else p_ff_pic->pts = 0;
880 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
882 p_sys->input_pts = p_sys->input_dts = 0;
885 p_ff_pic->opaque = 0;
887 /* Not much to do in indirect rendering mode */
888 if( !p_sys->b_direct_rendering || p_sys->b_pp )
890 return avcodec_default_get_buffer( p_context, p_ff_pic );
893 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
894 * so this check is necessary. */
895 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
896 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
898 msg_Dbg( p_dec, "disabling direct rendering" );
899 p_sys->b_direct_rendering = 0;
900 return avcodec_default_get_buffer( p_context, p_ff_pic );
903 /* Get a new picture */
904 //p_sys->p_vout->render.b_allow_modify_pics = 0;
905 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
908 p_sys->b_direct_rendering = 0;
909 return avcodec_default_get_buffer( p_context, p_ff_pic );
911 p_sys->p_context->draw_horiz_band = NULL;
913 p_ff_pic->opaque = (void*)p_pic;
914 p_ff_pic->type = FF_BUFFER_TYPE_USER;
915 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
916 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
917 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
918 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
920 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
921 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
922 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
923 p_ff_pic->linesize[3] = 0;
925 if( p_ff_pic->reference != 0 ||
926 p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
928 p_dec->pf_picture_link( p_dec, p_pic );
931 /* FIXME what is that, should give good value */
932 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
937 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
940 decoder_t *p_dec = (decoder_t *)p_context->opaque;
943 if( !p_ff_pic->opaque )
945 avcodec_default_release_buffer( p_context, p_ff_pic );
949 p_pic = (picture_t*)p_ff_pic->opaque;
951 p_ff_pic->data[0] = NULL;
952 p_ff_pic->data[1] = NULL;
953 p_ff_pic->data[2] = NULL;
954 p_ff_pic->data[3] = NULL;
956 if( p_ff_pic->reference != 0 ||
957 p_dec->p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
959 p_dec->pf_picture_unlink( p_dec, p_pic );