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 *****************************************************************************/
33 #include <vlc_codec.h>
35 #include <vlc_input.h> /* hmmm, just for INPUT_RATE_DEFAULT */
38 #ifdef HAVE_FFMPEG_AVCODEC_H
39 # include <ffmpeg/avcodec.h>
46 /*****************************************************************************
47 * decoder_sys_t : decoder descriptor
48 *****************************************************************************/
53 /* Video decoder specific part */
59 BITMAPINFOHEADER *p_format;
61 /* for frame skipping algo */
63 enum AVDiscard i_skip_frame;
64 enum AVDiscard i_skip_idct;
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');
135 return VLC_FOURCC('R','G','B','A');
138 return VLC_FOURCC('G','R','E','Y');
140 case PIX_FMT_YUV410P:
141 case PIX_FMT_YUV411P:
148 /* Returns a new picture buffer */
149 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
150 AVCodecContext *p_context )
152 decoder_sys_t *p_sys = p_dec->p_sys;
155 p_dec->fmt_out.video.i_width = p_context->width;
156 p_dec->fmt_out.video.i_height = p_context->height;
157 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
159 if( !p_context->width || !p_context->height )
161 return NULL; /* invalid display size */
164 if( !p_dec->fmt_out.i_codec )
166 /* we make conversion if possible*/
167 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
170 /* If an aspect-ratio was specified in the input format then force it */
171 if( p_dec->fmt_in.video.i_aspect )
173 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
177 p_dec->fmt_out.video.i_aspect =
178 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
179 p_context->width / p_context->height );
180 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
181 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
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_in.video.i_frame_rate_base;
198 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
200 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
201 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
204 p_pic = p_dec->pf_vout_buffer_new( p_dec );
206 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
208 E_(InitPostproc)( p_sys->p_pp, p_context->width,
209 p_context->height, p_context->pix_fmt );
210 p_sys->b_pp_init = VLC_TRUE;
216 /*****************************************************************************
217 * InitVideo: initialize the video decoder
218 *****************************************************************************
219 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
220 * opened (done after the first decoded frame).
221 *****************************************************************************/
222 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
223 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
225 decoder_sys_t *p_sys;
228 /* Allocate the memory needed to store the decoder's structure */
229 if( ( p_dec->p_sys = p_sys =
230 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
232 msg_Err( p_dec, "out of memory" );
235 memset( p_sys, 0, sizeof(decoder_sys_t) );
237 p_dec->p_sys->p_context = p_context;
238 p_dec->p_sys->p_codec = p_codec;
239 p_dec->p_sys->i_codec_id = i_codec_id;
240 p_dec->p_sys->psz_namecodec = psz_namecodec;
241 p_sys->p_ff_pic = avcodec_alloc_frame();
243 /* ***** Fill p_context with init values ***** */
244 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
245 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
246 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
247 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
249 /* ***** Get configuration of ffmpeg plugin ***** */
250 p_sys->p_context->workaround_bugs =
251 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
252 p_sys->p_context->error_resilience =
253 config_GetInt( p_dec, "ffmpeg-error-resilience" );
255 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
256 var_Get( p_dec, "grayscale", &val );
257 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
259 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
260 var_Get( p_dec, "ffmpeg-vismv", &val );
261 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
263 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
264 var_Get( p_dec, "ffmpeg-lowres", &val );
265 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
267 var_Create( p_dec, "ffmpeg-skiploopfilter",
268 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
269 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
270 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
271 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
272 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
273 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
275 /* ***** ffmpeg frame skipping ***** */
276 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
277 var_Get( p_dec, "ffmpeg-hurry-up", &val );
278 p_sys->b_hurry_up = val.b_bool;
280 var_Create( p_dec, "ffmpeg-skip-frame", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
281 var_Get( p_dec, "ffmpeg-skip-frame", &val );
285 p_sys->p_context->skip_frame = AVDISCARD_NONE;
288 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
291 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
294 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
297 p_sys->p_context->skip_frame = AVDISCARD_ALL;
300 p_sys->p_context->skip_frame = AVDISCARD_NONE;
303 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
305 var_Create( p_dec, "ffmpeg-skip-idct", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
306 var_Get( p_dec, "ffmpeg-skip-idct", &val );
310 p_sys->p_context->skip_idct = AVDISCARD_NONE;
313 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
316 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
319 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
322 p_sys->p_context->skip_idct = AVDISCARD_ALL;
325 p_sys->p_context->skip_idct = AVDISCARD_NONE;
328 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
330 /* ***** ffmpeg direct rendering ***** */
331 p_sys->b_direct_rendering = 0;
332 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
333 var_Get( p_dec, "ffmpeg-dr", &val );
334 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
335 /* Apparently direct rendering doesn't work with YUV422P */
336 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
337 /* H264 uses too many reference frames */
338 p_sys->i_codec_id != CODEC_ID_H264 &&
339 !p_sys->p_context->debug_mv )
341 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
342 * so we need to do another check in ffmpeg_GetFrameBuf() */
343 p_sys->b_direct_rendering = 1;
347 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
348 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
350 /* ffmpeg doesn't properly release old pictures when frames are skipped */
351 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
352 if( p_sys->b_direct_rendering )
354 msg_Dbg( p_dec, "using direct rendering" );
355 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
358 /* Always use our get_buffer wrapper so we can calculate the
360 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
361 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
362 p_sys->p_context->opaque = p_dec;
364 /* ***** init this codec with special data ***** */
365 ffmpeg_InitCodec( p_dec );
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_orig );
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( p_dec->fmt_in.video.p_palette )
383 p_sys->p_context->palctrl =
384 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
386 p_sys->p_context->palctrl = &palette_control;
388 /* ***** Open the codec ***** */
389 vlc_mutex_t *lock = var_AcquireMutex( "avcodec" );
396 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
398 vlc_mutex_unlock( lock );
399 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
403 vlc_mutex_unlock( lock );
404 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
410 /*****************************************************************************
411 * DecodeVideo: Called to decode one or more frames
412 *****************************************************************************/
413 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
415 decoder_sys_t *p_sys = p_dec->p_sys;
417 int b_null_size = VLC_FALSE;
420 if( !pp_block || !*pp_block ) return NULL;
422 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
423 ffmpeg_InitCodec( p_dec );
427 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
430 p_sys->i_pts = 0; /* To make sure we recover properly */
432 p_sys->input_pts = p_sys->input_dts = 0;
433 p_sys->i_late_frames = 0;
435 block_Release( p_block );
437 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
438 //avcodec_flush_buffers( p_sys->p_context );
442 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
444 /* Do not care about late frames when prerolling
445 * TODO avoid decoding of non reference frame
446 * (ie all B except for H264 where it depends only on nal_ref_idc) */
447 p_sys->i_late_frames = 0;
450 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
451 (mdate() - p_sys->i_late_frames_start > I64C(5000000)) )
455 msg_Err( p_dec, "more than 5 seconds of late video -> "
456 "dropping frame (computer too slow ?)" );
457 p_sys->i_pts = 0; /* To make sure we recover properly */
459 block_Release( p_block );
460 p_sys->i_late_frames--;
464 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
466 p_sys->input_pts = p_block->i_pts;
467 p_sys->input_dts = p_block->i_dts;
469 /* Make sure we don't reuse the same timestamps twice */
470 p_block->i_pts = p_block->i_dts = 0;
473 /* A good idea could be to decode all I pictures and see for the other */
474 if( !p_dec->b_pace_control &&
476 (p_sys->i_late_frames > 4) )
479 if( p_sys->i_late_frames < 8 )
481 p_sys->p_context->skip_frame =
482 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
483 AVDISCARD_BIDIR : p_sys->i_skip_frame;
487 /* picture too late, won't decode
488 * but break picture until a new I, and for mpeg4 ...*/
489 p_sys->i_late_frames--; /* needed else it will never be decrease */
490 block_Release( p_block );
497 if( p_sys->b_hurry_up )
498 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
499 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
505 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
507 if( p_sys->b_hurry_up )
508 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
509 b_null_size = VLC_TRUE;
513 * Do the actual decoding now
516 /* Check if post-processing was enabled */
517 p_sys->b_pp = p_sys->b_pp_async;
519 /* Don't forget that ffmpeg requires a little more bytes
520 * that the real frame size */
521 if( p_block->i_buffer > 0 )
523 p_sys->i_buffer = p_block->i_buffer;
524 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
525 p_sys->i_buffer_orig )
527 free( p_sys->p_buffer_orig );
528 p_sys->i_buffer_orig =
529 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
530 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
532 p_sys->p_buffer = p_sys->p_buffer_orig;
533 p_sys->i_buffer = p_block->i_buffer;
534 p_dec->p_libvlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
536 memset( p_sys->p_buffer + p_block->i_buffer, 0,
537 FF_INPUT_BUFFER_PADDING_SIZE );
539 p_block->i_buffer = 0;
542 while( p_sys->i_buffer > 0 )
544 int i_used, b_gotpicture;
547 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
549 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
550 if( b_null_size && p_sys->p_context->width > 0 &&
551 p_sys->p_context->height > 0 )
553 /* Reparse it to not drop the I frame */
554 b_null_size = VLC_FALSE;
555 if( p_sys->b_hurry_up )
556 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
557 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
559 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
564 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
566 block_Release( p_block );
569 else if( i_used > p_sys->i_buffer )
571 i_used = p_sys->i_buffer;
575 p_sys->i_buffer -= i_used;
576 p_sys->p_buffer += i_used;
578 /* Nothing to display */
581 if( i_used == 0 ) break;
585 /* Update frame late count (except when doing preroll) */
586 if( p_sys->i_pts && decoder_GetDisplayDate(p_dec, p_sys->i_pts) <= mdate() &&
587 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
589 p_sys->i_late_frames++;
590 if( p_sys->i_late_frames == 1 )
591 p_sys->i_late_frames_start = mdate();
595 p_sys->i_late_frames = 0;
598 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
600 /* Do not display the picture */
601 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
602 if( !b_drawpicture && p_pic )
603 p_dec->pf_vout_buffer_del( p_dec, p_pic );
607 if( !p_sys->p_ff_pic->opaque )
609 /* Get a new picture */
610 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
613 block_Release( p_block );
617 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
619 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
623 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
627 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
629 /* Sanity check (seems to be needed for some streams) */
630 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
632 p_sys->b_has_b_frames = VLC_TRUE;
635 if( !p_dec->fmt_in.video.i_aspect )
637 /* Fetch again the aspect ratio in case it changed */
638 p_dec->fmt_out.video.i_aspect =
640 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
641 * p_sys->p_context->width / p_sys->p_context->height );
642 p_dec->fmt_out.video.i_sar_num
643 = p_sys->p_context->sample_aspect_ratio.num;
644 p_dec->fmt_out.video.i_sar_den
645 = p_sys->p_context->sample_aspect_ratio.den;
647 if( p_dec->fmt_out.video.i_aspect == 0 )
649 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
650 * p_sys->p_context->width / p_sys->p_context->height;
654 /* Send decoded frame to vout */
657 p_pic->date = p_sys->i_pts;
659 /* interpolate the next PTS */
660 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
661 p_dec->fmt_in.video.i_frame_rate_base > 0 )
663 p_sys->i_pts += I64C(1000000) *
664 (2 + p_sys->p_ff_pic->repeat_pict) *
665 p_dec->fmt_in.video.i_frame_rate_base *
666 p_block->i_rate / INPUT_RATE_DEFAULT /
667 (2 * p_dec->fmt_in.video.i_frame_rate);
669 else if( p_sys->p_context->time_base.den > 0 )
671 p_sys->i_pts += I64C(1000000) *
672 (2 + p_sys->p_ff_pic->repeat_pict) *
673 p_sys->p_context->time_base.num *
674 p_block->i_rate / INPUT_RATE_DEFAULT /
675 (2 * p_sys->p_context->time_base.den);
678 if( p_sys->b_first_frame )
680 /* Hack to force display of still pictures */
681 p_sys->b_first_frame = VLC_FALSE;
682 p_pic->b_force = VLC_TRUE;
685 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
686 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
687 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
693 p_dec->pf_vout_buffer_del( p_dec, p_pic );
697 block_Release( p_block );
701 /*****************************************************************************
702 * EndVideo: decoder destruction
703 *****************************************************************************
704 * This function is called when the thread ends after a successful
706 *****************************************************************************/
707 void E_(EndVideoDec)( decoder_t *p_dec )
709 decoder_sys_t *p_sys = p_dec->p_sys;
711 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
712 E_(ClosePostproc)( p_dec, p_sys->p_pp );
713 free( p_sys->p_buffer_orig );
716 /*****************************************************************************
717 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
718 *****************************************************************************/
719 static void ffmpeg_InitCodec( decoder_t *p_dec )
721 decoder_sys_t *p_sys = p_dec->p_sys;
722 int i_size = p_dec->fmt_in.i_extra;
724 if( !i_size ) return;
726 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
730 p_sys->p_context->extradata_size = i_size + 12;
731 p = p_sys->p_context->extradata =
732 malloc( p_sys->p_context->extradata_size );
734 memcpy( &p[0], "SVQ3", 4 );
735 memset( &p[4], 0, 8 );
736 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
738 /* Now remove all atoms before the SMI one */
739 if( p_sys->p_context->extradata_size > 0x5a &&
740 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
742 uint8_t *psz = &p[0x52];
744 while( psz < &p[p_sys->p_context->extradata_size - 8] )
746 int i_size = GetDWBE( psz );
749 /* FIXME handle 1 as long size */
752 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
754 memmove( &p[0x52], psz,
755 &p[p_sys->p_context->extradata_size] - psz );
763 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
764 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
765 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
767 if( p_dec->fmt_in.i_extra == 8 )
769 p_sys->p_context->extradata_size = 8;
770 p_sys->p_context->extradata = malloc( 8 );
772 memcpy( p_sys->p_context->extradata,
773 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
774 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
776 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
777 p_sys->p_context->sub_id );
782 p_sys->p_context->extradata_size = i_size;
783 p_sys->p_context->extradata =
784 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
785 memcpy( p_sys->p_context->extradata,
786 p_dec->fmt_in.p_extra, i_size );
787 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
788 0, FF_INPUT_BUFFER_PADDING_SIZE );
792 /*****************************************************************************
793 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
794 * picture_t structure (when not in direct rendering mode).
795 *****************************************************************************/
796 static void ffmpeg_CopyPicture( decoder_t *p_dec,
797 picture_t *p_pic, AVFrame *p_ff_pic )
799 decoder_sys_t *p_sys = p_dec->p_sys;
801 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
803 int i_plane, i_size, i_line;
804 uint8_t *p_dst, *p_src;
805 int i_src_stride, i_dst_stride;
807 if( p_sys->p_pp && p_sys->b_pp )
808 E_(PostprocPict)( p_sys->p_pp, p_pic, p_ff_pic );
811 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
813 p_src = p_ff_pic->data[i_plane];
814 p_dst = p_pic->p[i_plane].p_pixels;
815 i_src_stride = p_ff_pic->linesize[i_plane];
816 i_dst_stride = p_pic->p[i_plane].i_pitch;
818 i_size = __MIN( i_src_stride, i_dst_stride );
819 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
822 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_size );
823 p_src += i_src_stride;
824 p_dst += i_dst_stride;
834 /* we need to convert to I420 */
835 switch( p_sys->p_context->pix_fmt )
837 case PIX_FMT_YUV410P:
838 case PIX_FMT_YUV411P:
841 for( i = 0; i < p_pic->i_planes; i++ )
843 dest_pic.data[i] = p_pic->p[i].p_pixels;
844 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
846 #if !defined(HAVE_FFMPEG_SWSCALE_H) && !defined(HAVE_LIBSWSCALE_TREE)
847 img_convert( &dest_pic, PIX_FMT_YUV420P,
848 (AVPicture *)p_ff_pic,
849 p_sys->p_context->pix_fmt,
850 p_sys->p_context->width,
851 p_sys->p_context->height );
855 msg_Err( p_dec, "don't know how to convert chroma %i",
856 p_sys->p_context->pix_fmt );
863 /*****************************************************************************
864 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
865 *****************************************************************************
866 * It is used for direct rendering as well as to get the right PTS for each
867 * decoded picture (even in indirect rendering mode).
868 *****************************************************************************/
869 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
872 decoder_t *p_dec = (decoder_t *)p_context->opaque;
873 decoder_sys_t *p_sys = p_dec->p_sys;
876 /* Set picture PTS */
877 if( p_sys->input_pts )
879 p_ff_pic->pts = p_sys->input_pts;
881 else if( p_sys->input_dts )
883 /* Some demuxers only set the dts so let's try to find a useful
884 * timestamp from this */
885 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
886 !p_ff_pic->reference || !p_sys->i_pts )
888 p_ff_pic->pts = p_sys->input_dts;
890 else p_ff_pic->pts = 0;
892 else p_ff_pic->pts = 0;
894 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
896 p_sys->input_pts = p_sys->input_dts = 0;
899 p_ff_pic->opaque = 0;
901 /* Not much to do in indirect rendering mode */
902 if( !p_sys->b_direct_rendering || p_sys->b_pp )
904 return avcodec_default_get_buffer( p_context, p_ff_pic );
907 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
908 * so this check is necessary. */
909 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
910 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
912 msg_Dbg( p_dec, "disabling direct rendering" );
913 p_sys->b_direct_rendering = 0;
914 return avcodec_default_get_buffer( p_context, p_ff_pic );
917 /* Get a new picture */
918 //p_sys->p_vout->render.b_allow_modify_pics = 0;
919 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
922 p_sys->b_direct_rendering = 0;
923 return avcodec_default_get_buffer( p_context, p_ff_pic );
925 p_sys->p_context->draw_horiz_band = NULL;
927 p_ff_pic->opaque = (void*)p_pic;
928 p_ff_pic->type = FF_BUFFER_TYPE_USER;
929 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
930 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
931 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
932 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
934 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
935 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
936 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
937 p_ff_pic->linesize[3] = 0;
939 if( p_ff_pic->reference != 0 ||
940 p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
942 p_dec->pf_picture_link( p_dec, p_pic );
945 /* FIXME what is that, should give good value */
946 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
951 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
954 decoder_t *p_dec = (decoder_t *)p_context->opaque;
957 if( !p_ff_pic->opaque )
959 avcodec_default_release_buffer( p_context, p_ff_pic );
963 p_pic = (picture_t*)p_ff_pic->opaque;
965 p_ff_pic->data[0] = NULL;
966 p_ff_pic->data[1] = NULL;
967 p_ff_pic->data[2] = NULL;
968 p_ff_pic->data[3] = NULL;
970 if( p_ff_pic->reference != 0 ||
971 p_dec->p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
973 p_dec->pf_picture_unlink( p_dec, p_pic );