1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_codec.h>
35 #include <vlc_input.h> /* hmmm, just for INPUT_RATE_DEFAULT */
36 #include <vlc_codecs.h> /* BITMAPINFOHEADER */
39 #ifdef HAVE_LIBAVCODEC_AVCODEC_H
40 # include <libavcodec/avcodec.h>
41 #elif defined(HAVE_FFMPEG_AVCODEC_H)
42 # include <ffmpeg/avcodec.h>
49 /*****************************************************************************
50 * decoder_sys_t : decoder descriptor
51 *****************************************************************************/
56 /* Video decoder specific part */
62 BITMAPINFOHEADER *p_format;
64 /* for frame skipping algo */
66 enum AVDiscard i_skip_frame;
67 enum AVDiscard i_skip_idct;
69 /* how many decoded frames are late */
71 mtime_t i_late_frames_start;
73 /* for direct rendering */
74 int b_direct_rendering;
78 /* Hack to force display of still pictures */
81 int i_buffer_orig, i_buffer;
82 char *p_buffer_orig, *p_buffer;
85 /* FIXME (dummy palette for now) */
86 static AVPaletteControl palette_control;
88 /*****************************************************************************
90 *****************************************************************************/
91 static void ffmpeg_InitCodec ( decoder_t * );
92 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
93 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
94 static int ffmpeg_ReGetFrameBuf( 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 case PIX_FMT_YUVJ420P: /* Hacky but better then chroma conversion */
112 return VLC_FOURCC('I','4','2','0');
113 case PIX_FMT_YUV422P:
114 case PIX_FMT_YUVJ422P: /* Hacky but better then chroma conversion */
115 return VLC_FOURCC('I','4','2','2');
116 case PIX_FMT_YUV444P:
117 case PIX_FMT_YUVJ444P: /* Hacky but better then chroma conversion */
118 return VLC_FOURCC('I','4','4','4');
121 return VLC_FOURCC('Y','U','Y','2');
123 #if defined(WORDS_BIGENDIAN)
125 return VLC_FOURCC('R','G','B','8');
127 return VLC_FOURCC('R','V','1','5');
129 return VLC_FOURCC('R','V','1','6');
131 return VLC_FOURCC('R','V','2','4');
133 #if defined(PIX_FMT_RGB8)
135 return VLC_FOURCC('R','G','B','8');
138 return VLC_FOURCC('R','V','1','5');
140 return VLC_FOURCC('R','V','1','6');
142 return VLC_FOURCC('R','V','2','4');
145 return VLC_FOURCC('R','V','3','2');
148 return VLC_FOURCC('R','G','B','A');
151 return VLC_FOURCC('G','R','E','Y');
153 case PIX_FMT_YUV410P:
154 case PIX_FMT_YUV411P:
160 /* Returns a new picture buffer */
161 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
162 AVCodecContext *p_context )
166 p_dec->fmt_out.video.i_width = p_context->width;
167 p_dec->fmt_out.video.i_height = p_context->height;
168 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
170 if( !p_context->width || !p_context->height )
172 return NULL; /* invalid display size */
175 if( !p_dec->fmt_out.i_codec )
177 /* we make conversion if possible*/
178 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
181 /* If an aspect-ratio was specified in the input format then force it */
182 if( p_dec->fmt_in.video.i_aspect )
184 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
188 p_dec->fmt_out.video.i_aspect =
189 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
190 p_context->width / p_context->height );
191 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
192 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
194 if( p_dec->fmt_out.video.i_aspect == 0 )
196 p_dec->fmt_out.video.i_aspect =
197 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
201 if( p_dec->fmt_out.video.i_frame_rate > 0 &&
202 p_dec->fmt_out.video.i_frame_rate_base > 0 )
204 p_dec->fmt_out.video.i_frame_rate =
205 p_dec->fmt_in.video.i_frame_rate;
206 p_dec->fmt_out.video.i_frame_rate_base =
207 p_dec->fmt_in.video.i_frame_rate_base;
209 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
211 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
212 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
215 p_pic = p_dec->pf_vout_buffer_new( p_dec );
220 /*****************************************************************************
221 * InitVideo: initialize the video decoder
222 *****************************************************************************
223 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
224 * opened (done after the first decoded frame).
225 *****************************************************************************/
226 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
227 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
229 decoder_sys_t *p_sys;
232 /* Allocate the memory needed to store the decoder's structure */
233 if( ( p_dec->p_sys = p_sys =
234 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
238 memset( p_sys, 0, sizeof(decoder_sys_t) );
240 p_dec->p_sys->p_context = p_context;
241 p_dec->p_sys->p_codec = p_codec;
242 p_dec->p_sys->i_codec_id = i_codec_id;
243 p_dec->p_sys->psz_namecodec = psz_namecodec;
244 p_sys->p_ff_pic = avcodec_alloc_frame();
246 /* ***** Fill p_context with init values ***** */
247 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
248 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
249 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
250 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
252 /* ***** Get configuration of ffmpeg plugin ***** */
253 p_sys->p_context->workaround_bugs =
254 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
255 p_sys->p_context->error_resilience =
256 config_GetInt( p_dec, "ffmpeg-error-resilience" );
258 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
259 var_Get( p_dec, "grayscale", &val );
260 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
262 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
263 var_Get( p_dec, "ffmpeg-vismv", &val );
264 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
266 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
267 var_Get( p_dec, "ffmpeg-lowres", &val );
268 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
270 var_Create( p_dec, "ffmpeg-skiploopfilter",
271 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
272 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
273 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
274 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
275 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
276 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
278 /* ***** ffmpeg frame skipping ***** */
279 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
280 var_Get( p_dec, "ffmpeg-hurry-up", &val );
281 p_sys->b_hurry_up = val.b_bool;
283 var_Create( p_dec, "ffmpeg-skip-frame", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
284 var_Get( p_dec, "ffmpeg-skip-frame", &val );
288 p_sys->p_context->skip_frame = AVDISCARD_NONE;
291 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
294 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
297 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
300 p_sys->p_context->skip_frame = AVDISCARD_ALL;
303 p_sys->p_context->skip_frame = AVDISCARD_NONE;
306 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
308 var_Create( p_dec, "ffmpeg-skip-idct", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
309 var_Get( p_dec, "ffmpeg-skip-idct", &val );
313 p_sys->p_context->skip_idct = AVDISCARD_NONE;
316 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
319 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
322 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
325 p_sys->p_context->skip_idct = AVDISCARD_ALL;
328 p_sys->p_context->skip_idct = AVDISCARD_NONE;
331 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
333 /* ***** ffmpeg direct rendering ***** */
334 p_sys->b_direct_rendering = 0;
335 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
336 var_Get( p_dec, "ffmpeg-dr", &val );
337 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
338 /* Apparently direct rendering doesn't work with YUV422P */
339 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
340 /* H264 uses too many reference frames */
341 p_sys->i_codec_id != CODEC_ID_H264 &&
342 !p_sys->p_context->debug_mv )
344 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
345 * so we need to do another check in ffmpeg_GetFrameBuf() */
346 p_sys->b_direct_rendering = 1;
349 /* ffmpeg doesn't properly release old pictures when frames are skipped */
350 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
351 if( p_sys->b_direct_rendering )
353 msg_Dbg( p_dec, "using direct rendering" );
354 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
357 /* Always use our get_buffer wrapper so we can calculate the
359 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
360 p_sys->p_context->reget_buffer = ffmpeg_ReGetFrameBuf;
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 = false;
371 p_sys->b_first_frame = 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 );
376 if( !p_sys->p_buffer_orig )
382 /* Set output properties */
383 p_dec->fmt_out.i_cat = VIDEO_ES;
384 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
387 if( p_dec->fmt_in.video.p_palette )
388 p_sys->p_context->palctrl =
389 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
390 else if( p_sys->i_codec_id != CODEC_ID_MSVIDEO1 )
391 p_sys->p_context->palctrl = &palette_control;
393 /* ***** Open the codec ***** */
394 vlc_mutex_t *lock = var_AcquireMutex( "avcodec" );
397 free( p_sys->p_buffer_orig );
402 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
404 vlc_mutex_unlock( lock );
405 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
406 free( p_sys->p_buffer_orig );
410 vlc_mutex_unlock( lock );
411 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
417 /*****************************************************************************
418 * DecodeVideo: Called to decode one or more frames
419 *****************************************************************************/
420 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
422 decoder_sys_t *p_sys = p_dec->p_sys;
424 int b_null_size = false;
427 if( !pp_block || !*pp_block ) return NULL;
429 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
430 ffmpeg_InitCodec( p_dec );
434 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
437 p_sys->i_pts = 0; /* To make sure we recover properly */
439 p_sys->input_pts = p_sys->input_dts = 0;
440 p_sys->i_late_frames = 0;
442 block_Release( p_block );
444 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
445 //avcodec_flush_buffers( p_sys->p_context );
449 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
451 /* Do not care about late frames when prerolling
452 * TODO avoid decoding of non reference frame
453 * (ie all B except for H264 where it depends only on nal_ref_idc) */
454 p_sys->i_late_frames = 0;
457 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
458 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
462 msg_Err( p_dec, "more than 5 seconds of late video -> "
463 "dropping frame (computer too slow ?)" );
464 p_sys->i_pts = 0; /* To make sure we recover properly */
466 block_Release( p_block );
467 p_sys->i_late_frames--;
471 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
473 p_sys->input_pts = p_block->i_pts;
474 p_sys->input_dts = p_block->i_dts;
476 /* Make sure we don't reuse the same timestamps twice */
477 p_block->i_pts = p_block->i_dts = 0;
480 /* A good idea could be to decode all I pictures and see for the other */
481 if( !p_dec->b_pace_control &&
483 (p_sys->i_late_frames > 4) )
486 if( p_sys->i_late_frames < 8 )
488 p_sys->p_context->skip_frame =
489 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
490 AVDISCARD_BIDIR : p_sys->i_skip_frame;
494 /* picture too late, won't decode
495 * but break picture until a new I, and for mpeg4 ...*/
496 p_sys->i_late_frames--; /* needed else it will never be decrease */
497 block_Release( p_block );
504 if( p_sys->b_hurry_up )
505 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
506 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
512 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
514 if( p_sys->b_hurry_up )
515 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
520 * Do the actual decoding now
523 /* Don't forget that ffmpeg requires a little more bytes
524 * that the real frame size */
525 if( p_block->i_buffer > 0 )
527 p_sys->i_buffer = p_block->i_buffer;
528 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
529 p_sys->i_buffer_orig )
531 free( p_sys->p_buffer_orig );
532 p_sys->i_buffer_orig =
533 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
534 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
536 p_sys->p_buffer = p_sys->p_buffer_orig;
537 p_sys->i_buffer = p_block->i_buffer;
538 if( !p_sys->p_buffer )
540 block_Release( p_block );
543 vlc_memcpy( p_sys->p_buffer, p_block->p_buffer, p_block->i_buffer );
544 memset( p_sys->p_buffer + p_block->i_buffer, 0,
545 FF_INPUT_BUFFER_PADDING_SIZE );
547 p_block->i_buffer = 0;
550 while( p_sys->i_buffer > 0 )
552 int i_used, b_gotpicture;
555 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
557 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
558 if( b_null_size && p_sys->p_context->width > 0 &&
559 p_sys->p_context->height > 0 )
561 /* Reparse it to not drop the I frame */
563 if( p_sys->b_hurry_up )
564 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
565 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
567 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
572 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
574 block_Release( p_block );
577 else if( i_used > p_sys->i_buffer )
579 i_used = p_sys->i_buffer;
583 p_sys->i_buffer -= i_used;
584 p_sys->p_buffer += i_used;
586 /* Nothing to display */
589 if( i_used == 0 ) break;
593 /* Update frame late count (except when doing preroll) */
594 if( p_sys->i_pts && decoder_GetDisplayDate(p_dec, p_sys->i_pts) <= mdate() &&
595 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
597 p_sys->i_late_frames++;
598 if( p_sys->i_late_frames == 1 )
599 p_sys->i_late_frames_start = mdate();
603 p_sys->i_late_frames = 0;
606 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
608 /* Do not display the picture */
609 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
610 if( !b_drawpicture && p_pic )
611 p_dec->pf_vout_buffer_del( p_dec, p_pic );
615 if( !p_sys->p_ff_pic->opaque )
617 /* Get a new picture */
618 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
621 block_Release( p_block );
625 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
627 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
631 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
635 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
637 /* Sanity check (seems to be needed for some streams) */
638 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
640 p_sys->b_has_b_frames = true;
643 if( !p_dec->fmt_in.video.i_aspect )
645 /* Fetch again the aspect ratio in case it changed */
646 p_dec->fmt_out.video.i_aspect =
648 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
649 * p_sys->p_context->width / p_sys->p_context->height );
650 p_dec->fmt_out.video.i_sar_num
651 = p_sys->p_context->sample_aspect_ratio.num;
652 p_dec->fmt_out.video.i_sar_den
653 = p_sys->p_context->sample_aspect_ratio.den;
655 if( p_dec->fmt_out.video.i_aspect == 0 )
657 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
658 * p_sys->p_context->width / p_sys->p_context->height;
662 /* Send decoded frame to vout */
665 p_pic->date = p_sys->i_pts;
667 /* interpolate the next PTS */
668 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
669 p_dec->fmt_in.video.i_frame_rate_base > 0 )
671 p_sys->i_pts += INT64_C(1000000) *
672 (2 + p_sys->p_ff_pic->repeat_pict) *
673 p_dec->fmt_in.video.i_frame_rate_base *
674 p_block->i_rate / INPUT_RATE_DEFAULT /
675 (2 * p_dec->fmt_in.video.i_frame_rate);
677 else if( p_sys->p_context->time_base.den > 0 )
679 p_sys->i_pts += INT64_C(1000000) *
680 (2 + p_sys->p_ff_pic->repeat_pict) *
681 p_sys->p_context->time_base.num *
682 p_block->i_rate / INPUT_RATE_DEFAULT /
683 (2 * p_sys->p_context->time_base.den);
686 if( p_sys->b_first_frame )
688 /* Hack to force display of still pictures */
689 p_sys->b_first_frame = false;
690 p_pic->b_force = true;
693 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
694 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
695 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
701 p_dec->pf_vout_buffer_del( p_dec, p_pic );
705 block_Release( p_block );
709 /*****************************************************************************
710 * EndVideo: decoder destruction
711 *****************************************************************************
712 * This function is called when the thread ends after a successful
714 *****************************************************************************/
715 void EndVideoDec( decoder_t *p_dec )
717 decoder_sys_t *p_sys = p_dec->p_sys;
719 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
720 free( p_sys->p_buffer_orig );
723 /*****************************************************************************
724 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
725 *****************************************************************************/
726 static void ffmpeg_InitCodec( decoder_t *p_dec )
728 decoder_sys_t *p_sys = p_dec->p_sys;
729 int i_size = p_dec->fmt_in.i_extra;
731 if( !i_size ) return;
733 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
737 p_sys->p_context->extradata_size = i_size + 12;
738 p = p_sys->p_context->extradata =
739 malloc( p_sys->p_context->extradata_size );
743 memcpy( &p[0], "SVQ3", 4 );
744 memset( &p[4], 0, 8 );
745 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
747 /* Now remove all atoms before the SMI one */
748 if( p_sys->p_context->extradata_size > 0x5a &&
749 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
751 uint8_t *psz = &p[0x52];
753 while( psz < &p[p_sys->p_context->extradata_size - 8] )
755 int i_size = GetDWBE( psz );
758 /* FIXME handle 1 as long size */
761 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
763 memmove( &p[0x52], psz,
764 &p[p_sys->p_context->extradata_size] - psz );
772 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
773 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
774 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
776 if( p_dec->fmt_in.i_extra == 8 )
778 p_sys->p_context->extradata_size = 8;
779 p_sys->p_context->extradata = malloc( 8 );
780 if( p_sys->p_context->extradata )
782 memcpy( p_sys->p_context->extradata,
783 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
784 p_sys->p_context->sub_id = ((uint32_t*)p_dec->fmt_in.p_extra)[1];
786 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
787 p_sys->p_context->sub_id );
793 p_sys->p_context->extradata_size = i_size;
794 p_sys->p_context->extradata =
795 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
796 if( p_sys->p_context->extradata )
798 memcpy( p_sys->p_context->extradata,
799 p_dec->fmt_in.p_extra, i_size );
800 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
801 0, FF_INPUT_BUFFER_PADDING_SIZE );
806 /*****************************************************************************
807 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
808 * picture_t structure (when not in direct rendering mode).
809 *****************************************************************************/
810 static void ffmpeg_CopyPicture( decoder_t *p_dec,
811 picture_t *p_pic, AVFrame *p_ff_pic )
813 decoder_sys_t *p_sys = p_dec->p_sys;
815 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
817 int i_plane, i_size, i_line;
818 uint8_t *p_dst, *p_src;
819 int i_src_stride, i_dst_stride;
821 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
823 p_src = p_ff_pic->data[i_plane];
824 p_dst = p_pic->p[i_plane].p_pixels;
825 i_src_stride = p_ff_pic->linesize[i_plane];
826 i_dst_stride = p_pic->p[i_plane].i_pitch;
828 i_size = __MIN( i_src_stride, i_dst_stride );
829 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
832 vlc_memcpy( p_dst, p_src, i_size );
833 p_src += i_src_stride;
834 p_dst += i_dst_stride;
843 /* we need to convert to I420 */
844 switch( p_sys->p_context->pix_fmt )
846 case PIX_FMT_YUV410P:
847 case PIX_FMT_YUV411P:
850 #if defined(PIX_FMT_RGB8)
853 #if defined(PIX_FMT_BRG32)
857 #if defined(PIX_FMT_BGR8)
861 for( i = 0; i < p_pic->i_planes; i++ )
863 dest_pic.data[i] = p_pic->p[i].p_pixels;
864 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
866 #if !defined(HAVE_LIBSWSCALE_SWSCALE_H) && !defined(HAVE_FFMPEG_SWSCALE_H)
867 img_convert( &dest_pic, PIX_FMT_YUV420P,
868 (AVPicture *)p_ff_pic,
869 p_sys->p_context->pix_fmt,
870 p_sys->p_context->width,
871 p_sys->p_context->height );
875 msg_Err( p_dec, "don't know how to convert chroma %i",
876 p_sys->p_context->pix_fmt );
883 /*****************************************************************************
884 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
885 *****************************************************************************
886 * It is used for direct rendering as well as to get the right PTS for each
887 * decoded picture (even in indirect rendering mode).
888 *****************************************************************************/
889 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic );
891 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
894 decoder_t *p_dec = (decoder_t *)p_context->opaque;
895 decoder_sys_t *p_sys = p_dec->p_sys;
898 /* Set picture PTS */
899 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
902 p_ff_pic->opaque = 0;
904 /* Not much to do in indirect rendering mode */
905 if( !p_sys->b_direct_rendering )
907 return avcodec_default_get_buffer( p_context, p_ff_pic );
910 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
911 * so this check is necessary. */
912 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
913 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
915 msg_Dbg( p_dec, "disabling direct rendering" );
916 p_sys->b_direct_rendering = 0;
917 return avcodec_default_get_buffer( p_context, p_ff_pic );
920 /* Get a new picture */
921 //p_sys->p_vout->render.b_allow_modify_pics = 0;
922 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
925 p_sys->b_direct_rendering = 0;
926 return avcodec_default_get_buffer( p_context, p_ff_pic );
928 p_sys->p_context->draw_horiz_band = NULL;
930 p_ff_pic->opaque = (void*)p_pic;
931 p_ff_pic->type = FF_BUFFER_TYPE_USER;
932 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
933 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
934 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
935 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
937 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
938 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
939 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
940 p_ff_pic->linesize[3] = 0;
942 if( p_ff_pic->reference != 0 )
944 p_dec->pf_picture_link( p_dec, p_pic );
947 /* FIXME what is that, should give good value */
948 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
952 static int ffmpeg_ReGetFrameBuf( struct AVCodecContext *p_context, AVFrame *p_ff_pic )
954 decoder_t *p_dec = (decoder_t *)p_context->opaque;
956 /* Set picture PTS */
957 ffmpeg_SetFrameBufferPts( p_dec, p_ff_pic );
959 /* We always use default reget function, it works perfectly fine */
960 return avcodec_default_reget_buffer( p_context, p_ff_pic );
963 static void ffmpeg_SetFrameBufferPts( decoder_t *p_dec, AVFrame *p_ff_pic )
965 decoder_sys_t *p_sys = p_dec->p_sys;
967 /* Set picture PTS */
968 if( p_sys->input_pts )
970 p_ff_pic->pts = p_sys->input_pts;
972 else if( p_sys->input_dts )
974 /* Some demuxers only set the dts so let's try to find a useful
975 * timestamp from this */
976 if( !p_sys->p_context->has_b_frames || !p_sys->b_has_b_frames ||
977 !p_ff_pic->reference || !p_sys->i_pts )
979 p_ff_pic->pts = p_sys->input_dts;
981 else p_ff_pic->pts = 0;
983 else p_ff_pic->pts = 0;
985 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
987 p_sys->input_pts = p_sys->input_dts = 0;
991 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
994 decoder_t *p_dec = (decoder_t *)p_context->opaque;
997 if( !p_ff_pic->opaque )
999 avcodec_default_release_buffer( p_context, p_ff_pic );
1003 p_pic = (picture_t*)p_ff_pic->opaque;
1005 p_ff_pic->data[0] = NULL;
1006 p_ff_pic->data[1] = NULL;
1007 p_ff_pic->data[2] = NULL;
1008 p_ff_pic->data[3] = NULL;
1010 if( p_ff_pic->reference != 0 )
1012 p_dec->pf_picture_unlink( p_dec, p_pic );