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_codec.h>
31 #include <vlc_input.h> /* hmmm, just for INPUT_RATE_DEFAULT */
34 #ifdef HAVE_FFMPEG_AVCODEC_H
35 # include <ffmpeg/avcodec.h>
42 /*****************************************************************************
43 * decoder_sys_t : decoder descriptor
44 *****************************************************************************/
49 /* Video decoder specific part */
55 BITMAPINFOHEADER *p_format;
57 /* for frame skipping algo */
59 enum AVDiscard i_skip_frame;
60 enum AVDiscard i_skip_idct;
62 /* how many decoded frames are late */
64 mtime_t i_late_frames_start;
66 /* for direct rendering */
67 int b_direct_rendering;
69 vlc_bool_t b_has_b_frames;
71 /* Hack to force display of still pictures */
72 vlc_bool_t b_first_frame;
74 int i_buffer_orig, i_buffer;
75 char *p_buffer_orig, *p_buffer;
77 /* Postprocessing handle */
80 vlc_bool_t b_pp_async;
84 /* FIXME (dummy palette for now) */
85 static AVPaletteControl palette_control;
87 /*****************************************************************************
89 *****************************************************************************/
90 static void ffmpeg_InitCodec ( decoder_t * );
91 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
92 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
93 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
95 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
97 uint8_t *p = (uint8_t*)&fcc;
98 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
101 /*****************************************************************************
103 *****************************************************************************/
104 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
106 switch( i_ff_chroma )
108 case PIX_FMT_YUV420P:
109 case PIX_FMT_YUVJ420P: /* Hacky but better then chroma conversion */
110 return VLC_FOURCC('I','4','2','0');
111 case PIX_FMT_YUV422P:
112 case PIX_FMT_YUVJ422P: /* Hacky but better then chroma conversion */
113 return VLC_FOURCC('I','4','2','2');
114 case PIX_FMT_YUV444P:
115 case PIX_FMT_YUVJ444P: /* Hacky but better then chroma conversion */
116 return VLC_FOURCC('I','4','4','4');
119 return VLC_FOURCC('Y','U','Y','2');
122 return VLC_FOURCC('R','V','1','5');
124 return VLC_FOURCC('R','V','1','6');
126 return VLC_FOURCC('R','V','2','4');
128 return VLC_FOURCC('R','V','3','2');
131 return VLC_FOURCC('R','G','B','A');
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 p_dec->fmt_out.video.i_aspect =
174 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
175 p_context->width / p_context->height );
176 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
177 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
179 if( p_dec->fmt_out.video.i_aspect == 0 )
181 p_dec->fmt_out.video.i_aspect =
182 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
186 if( p_dec->fmt_out.video.i_frame_rate > 0 &&
187 p_dec->fmt_out.video.i_frame_rate_base > 0 )
189 p_dec->fmt_out.video.i_frame_rate =
190 p_dec->fmt_in.video.i_frame_rate;
191 p_dec->fmt_out.video.i_frame_rate_base =
192 p_dec->fmt_in.video.i_frame_rate_base;
194 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
196 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
197 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
200 p_pic = p_dec->pf_vout_buffer_new( p_dec );
202 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
204 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
205 p_context->height, p_context->pix_fmt );
206 p_sys->b_pp_init = VLC_TRUE;
212 /*****************************************************************************
213 * InitVideo: initialize the video decoder
214 *****************************************************************************
215 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
216 * opened (done after the first decoded frame).
217 *****************************************************************************/
218 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
219 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
221 decoder_sys_t *p_sys;
224 /* Allocate the memory needed to store the decoder's structure */
225 if( ( p_dec->p_sys = p_sys =
226 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
228 msg_Err( p_dec, "out of memory" );
231 memset( p_sys, 0, sizeof(decoder_sys_t) );
233 p_dec->p_sys->p_context = p_context;
234 p_dec->p_sys->p_codec = p_codec;
235 p_dec->p_sys->i_codec_id = i_codec_id;
236 p_dec->p_sys->psz_namecodec = psz_namecodec;
237 p_sys->p_ff_pic = avcodec_alloc_frame();
239 /* ***** Fill p_context with init values ***** */
240 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
241 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
242 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
243 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
245 /* ***** Get configuration of ffmpeg plugin ***** */
246 p_sys->p_context->workaround_bugs =
247 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
248 p_sys->p_context->error_resilience =
249 config_GetInt( p_dec, "ffmpeg-error-resilience" );
251 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
252 var_Get( p_dec, "grayscale", &val );
253 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
255 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
256 var_Get( p_dec, "ffmpeg-vismv", &val );
257 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( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
263 var_Create( p_dec, "ffmpeg-skiploopfilter",
264 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
265 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
266 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
267 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
268 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
269 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
271 /* ***** ffmpeg frame skipping ***** */
272 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
273 var_Get( p_dec, "ffmpeg-hurry-up", &val );
274 p_sys->b_hurry_up = val.b_bool;
276 var_Create( p_dec, "ffmpeg-skip-frame", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
277 var_Get( p_dec, "ffmpeg-skip-frame", &val );
281 p_sys->p_context->skip_frame = AVDISCARD_NONE;
284 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
287 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
290 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
293 p_sys->p_context->skip_frame = AVDISCARD_ALL;
296 p_sys->p_context->skip_frame = AVDISCARD_NONE;
299 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
301 var_Create( p_dec, "ffmpeg-skip-idct", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
302 var_Get( p_dec, "ffmpeg-skip-idct", &val );
306 p_sys->p_context->skip_idct = AVDISCARD_NONE;
309 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
312 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
315 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
318 p_sys->p_context->skip_idct = AVDISCARD_ALL;
321 p_sys->p_context->skip_idct = AVDISCARD_NONE;
324 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
326 /* ***** ffmpeg direct rendering ***** */
327 p_sys->b_direct_rendering = 0;
328 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
329 var_Get( p_dec, "ffmpeg-dr", &val );
330 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
331 /* Apparently direct rendering doesn't work with YUV422P */
332 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
333 /* H264 uses too many reference frames */
334 p_sys->i_codec_id != CODEC_ID_H264 &&
335 !p_sys->p_context->debug_mv )
337 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
338 * so we need to do another check in ffmpeg_GetFrameBuf() */
339 p_sys->b_direct_rendering = 1;
343 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
344 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
346 /* ffmpeg doesn't properly release old pictures when frames are skipped */
347 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
348 if( p_sys->b_direct_rendering )
350 msg_Dbg( p_dec, "using direct rendering" );
351 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
354 /* Always use our get_buffer wrapper so we can calculate the
356 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
357 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
358 p_sys->p_context->opaque = p_dec;
360 /* ***** init this codec with special data ***** */
361 ffmpeg_InitCodec( p_dec );
363 /* ***** misc init ***** */
364 p_sys->input_pts = p_sys->input_dts = 0;
366 p_sys->b_has_b_frames = VLC_FALSE;
367 p_sys->b_first_frame = VLC_TRUE;
368 p_sys->i_late_frames = 0;
370 p_sys->i_buffer_orig = 1;
371 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
373 /* Set output properties */
374 p_dec->fmt_out.i_cat = VIDEO_ES;
375 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
378 if( p_dec->fmt_in.video.p_palette )
379 p_sys->p_context->palctrl =
380 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
382 p_sys->p_context->palctrl = &palette_control;
384 /* ***** Open the codec ***** */
385 vlc_mutex_t *lock = var_AcquireMutex( "avcodec" );
392 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
394 vlc_mutex_unlock( lock );
395 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
399 vlc_mutex_unlock( lock );
400 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
406 /*****************************************************************************
407 * DecodeVideo: Called to decode one or more frames
408 *****************************************************************************/
409 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
411 decoder_sys_t *p_sys = p_dec->p_sys;
413 int b_null_size = VLC_FALSE;
416 if( !pp_block || !*pp_block ) return NULL;
418 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
419 ffmpeg_InitCodec( p_dec );
423 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
426 p_sys->i_pts = 0; /* To make sure we recover properly */
428 p_sys->input_pts = p_sys->input_dts = 0;
429 p_sys->i_late_frames = 0;
431 block_Release( p_block );
433 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
434 //avcodec_flush_buffers( p_sys->p_context );
438 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
440 /* Do not care about late frames when prerolling
441 * TODO avoid decoding of non reference frame
442 * (ie all B except for H264 where it depends only on nal_ref_idc) */
443 p_sys->i_late_frames = 0;
446 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
447 (mdate() - p_sys->i_late_frames_start > I64C(5000000)) )
451 msg_Err( p_dec, "more than 5 seconds of late video -> "
452 "dropping frame (computer too slow ?)" );
453 p_sys->i_pts = 0; /* To make sure we recover properly */
455 block_Release( p_block );
456 p_sys->i_late_frames--;
460 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
462 p_sys->input_pts = p_block->i_pts;
463 p_sys->input_dts = p_block->i_dts;
465 /* Make sure we don't reuse the same timestamps twice */
466 p_block->i_pts = p_block->i_dts = 0;
469 /* A good idea could be to decode all I pictures and see for the other */
470 if( !p_dec->b_pace_control &&
472 (p_sys->i_late_frames > 4) )
475 if( p_sys->i_late_frames < 8 )
477 p_sys->p_context->skip_frame =
478 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
479 AVDISCARD_BIDIR : p_sys->i_skip_frame;
483 /* picture too late, won't decode
484 * but break picture until a new I, and for mpeg4 ...*/
485 p_sys->i_late_frames--; /* needed else it will never be decrease */
486 block_Release( p_block );
493 if( p_sys->b_hurry_up )
494 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
495 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
501 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
503 if( p_sys->b_hurry_up )
504 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
505 b_null_size = VLC_TRUE;
509 * Do the actual decoding now
512 /* Check if post-processing was enabled */
513 p_sys->b_pp = p_sys->b_pp_async;
515 /* Don't forget that ffmpeg requires a little more bytes
516 * that the real frame size */
517 if( p_block->i_buffer > 0 )
519 p_sys->i_buffer = p_block->i_buffer;
520 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
521 p_sys->i_buffer_orig )
523 free( p_sys->p_buffer_orig );
524 p_sys->i_buffer_orig =
525 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
526 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
528 p_sys->p_buffer = p_sys->p_buffer_orig;
529 p_sys->i_buffer = p_block->i_buffer;
530 p_dec->p_libvlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
532 memset( p_sys->p_buffer + p_block->i_buffer, 0,
533 FF_INPUT_BUFFER_PADDING_SIZE );
535 p_block->i_buffer = 0;
538 while( p_sys->i_buffer > 0 )
540 int i_used, b_gotpicture;
543 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
545 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
546 if( b_null_size && p_sys->p_context->width > 0 &&
547 p_sys->p_context->height > 0 )
549 /* Reparse it to not drop the I frame */
550 b_null_size = VLC_FALSE;
551 if( p_sys->b_hurry_up )
552 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
553 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
555 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
560 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
562 block_Release( p_block );
565 else if( i_used > p_sys->i_buffer )
567 i_used = p_sys->i_buffer;
571 p_sys->i_buffer -= i_used;
572 p_sys->p_buffer += i_used;
574 /* Nothing to display */
577 if( i_used == 0 ) break;
581 /* Update frame late count (except when doing preroll) */
582 if( p_sys->i_pts && decoder_GetDisplayDate(p_dec, p_sys->i_pts) <= mdate() &&
583 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
585 p_sys->i_late_frames++;
586 if( p_sys->i_late_frames == 1 )
587 p_sys->i_late_frames_start = mdate();
591 p_sys->i_late_frames = 0;
594 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
596 /* Do not display the picture */
597 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
598 if( !b_drawpicture && p_pic )
599 p_dec->pf_vout_buffer_del( p_dec, p_pic );
603 if( !p_sys->p_ff_pic->opaque )
605 /* Get a new picture */
606 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
609 block_Release( p_block );
613 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
615 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
619 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
623 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
625 /* Sanity check (seems to be needed for some streams) */
626 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
628 p_sys->b_has_b_frames = VLC_TRUE;
631 if( !p_dec->fmt_in.video.i_aspect )
633 /* Fetch again the aspect ratio in case it changed */
634 p_dec->fmt_out.video.i_aspect =
636 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
637 * p_sys->p_context->width / p_sys->p_context->height );
638 p_dec->fmt_out.video.i_sar_num
639 = p_sys->p_context->sample_aspect_ratio.num;
640 p_dec->fmt_out.video.i_sar_den
641 = p_sys->p_context->sample_aspect_ratio.den;
643 if( p_dec->fmt_out.video.i_aspect == 0 )
645 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
646 * p_sys->p_context->width / p_sys->p_context->height;
650 /* Send decoded frame to vout */
653 p_pic->date = p_sys->i_pts;
655 /* interpolate the next PTS */
656 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
657 p_dec->fmt_in.video.i_frame_rate_base > 0 )
659 p_sys->i_pts += I64C(1000000) *
660 (2 + p_sys->p_ff_pic->repeat_pict) *
661 p_dec->fmt_in.video.i_frame_rate_base *
662 p_block->i_rate / INPUT_RATE_DEFAULT /
663 (2 * p_dec->fmt_in.video.i_frame_rate);
665 else if( p_sys->p_context->time_base.den > 0 )
667 p_sys->i_pts += I64C(1000000) *
668 (2 + p_sys->p_ff_pic->repeat_pict) *
669 p_sys->p_context->time_base.num *
670 p_block->i_rate / INPUT_RATE_DEFAULT /
671 (2 * p_sys->p_context->time_base.den);
674 if( p_sys->b_first_frame )
676 /* Hack to force display of still pictures */
677 p_sys->b_first_frame = VLC_FALSE;
678 p_pic->b_force = VLC_TRUE;
681 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
682 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
683 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
689 p_dec->pf_vout_buffer_del( p_dec, p_pic );
693 block_Release( p_block );
697 /*****************************************************************************
698 * EndVideo: decoder destruction
699 *****************************************************************************
700 * This function is called when the thread ends after a successful
702 *****************************************************************************/
703 void E_(EndVideoDec)( decoder_t *p_dec )
705 decoder_sys_t *p_sys = p_dec->p_sys;
707 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
708 E_(ClosePostproc)( p_dec, p_sys->p_pp );
709 free( p_sys->p_buffer_orig );
712 /*****************************************************************************
713 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
714 *****************************************************************************/
715 static void ffmpeg_InitCodec( decoder_t *p_dec )
717 decoder_sys_t *p_sys = p_dec->p_sys;
718 int i_size = p_dec->fmt_in.i_extra;
720 if( !i_size ) return;
722 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
726 p_sys->p_context->extradata_size = i_size + 12;
727 p = p_sys->p_context->extradata =
728 malloc( p_sys->p_context->extradata_size );
730 memcpy( &p[0], "SVQ3", 4 );
731 memset( &p[4], 0, 8 );
732 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
734 /* Now remove all atoms before the SMI one */
735 if( p_sys->p_context->extradata_size > 0x5a &&
736 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
738 uint8_t *psz = &p[0x52];
740 while( psz < &p[p_sys->p_context->extradata_size - 8] )
742 int i_size = GetDWBE( psz );
745 /* FIXME handle 1 as long size */
748 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
750 memmove( &p[0x52], psz,
751 &p[p_sys->p_context->extradata_size] - psz );
759 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
760 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
761 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
763 if( p_dec->fmt_in.i_extra == 8 )
765 p_sys->p_context->extradata_size = 8;
766 p_sys->p_context->extradata = malloc( 8 );
768 memcpy( p_sys->p_context->extradata,
769 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
770 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
772 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
773 p_sys->p_context->sub_id );
778 p_sys->p_context->extradata_size = i_size;
779 p_sys->p_context->extradata =
780 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
781 memcpy( p_sys->p_context->extradata,
782 p_dec->fmt_in.p_extra, i_size );
783 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
784 0, FF_INPUT_BUFFER_PADDING_SIZE );
788 /*****************************************************************************
789 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
790 * picture_t structure (when not in direct rendering mode).
791 *****************************************************************************/
792 static void ffmpeg_CopyPicture( decoder_t *p_dec,
793 picture_t *p_pic, AVFrame *p_ff_pic )
795 decoder_sys_t *p_sys = p_dec->p_sys;
797 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
799 int i_plane, i_size, i_line;
800 uint8_t *p_dst, *p_src;
801 int i_src_stride, i_dst_stride;
803 if( p_sys->p_pp && p_sys->b_pp )
804 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
807 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
809 p_src = p_ff_pic->data[i_plane];
810 p_dst = p_pic->p[i_plane].p_pixels;
811 i_src_stride = p_ff_pic->linesize[i_plane];
812 i_dst_stride = p_pic->p[i_plane].i_pitch;
814 i_size = __MIN( i_src_stride, i_dst_stride );
815 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
818 p_dec->p_libvlc->pf_memcpy( p_dst, p_src, i_size );
819 p_src += i_src_stride;
820 p_dst += i_dst_stride;
830 /* we need to convert to I420 */
831 switch( p_sys->p_context->pix_fmt )
833 case PIX_FMT_YUV410P:
834 case PIX_FMT_YUV411P:
837 for( i = 0; i < p_pic->i_planes; i++ )
839 dest_pic.data[i] = p_pic->p[i].p_pixels;
840 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
842 #if !defined(HAVE_FFMPEG_SWSCALE_H) && !defined(HAVE_LIBSWSCALE_TREE)
843 img_convert( &dest_pic, PIX_FMT_YUV420P,
844 (AVPicture *)p_ff_pic,
845 p_sys->p_context->pix_fmt,
846 p_sys->p_context->width,
847 p_sys->p_context->height );
851 msg_Err( p_dec, "don't know how to convert chroma %i",
852 p_sys->p_context->pix_fmt );
859 /*****************************************************************************
860 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
861 *****************************************************************************
862 * It is used for direct rendering as well as to get the right PTS for each
863 * decoded picture (even in indirect rendering mode).
864 *****************************************************************************/
865 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
868 decoder_t *p_dec = (decoder_t *)p_context->opaque;
869 decoder_sys_t *p_sys = p_dec->p_sys;
872 /* Set picture PTS */
873 if( p_sys->input_pts )
875 p_ff_pic->pts = p_sys->input_pts;
877 else if( p_sys->input_dts )
879 /* Some demuxers only set the dts so let's try to find a useful
880 * timestamp from this */
881 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
882 !p_ff_pic->reference || !p_sys->i_pts )
884 p_ff_pic->pts = p_sys->input_dts;
886 else p_ff_pic->pts = 0;
888 else p_ff_pic->pts = 0;
890 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
892 p_sys->input_pts = p_sys->input_dts = 0;
895 p_ff_pic->opaque = 0;
897 /* Not much to do in indirect rendering mode */
898 if( !p_sys->b_direct_rendering || p_sys->b_pp )
900 return avcodec_default_get_buffer( p_context, p_ff_pic );
903 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
904 * so this check is necessary. */
905 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
906 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
908 msg_Dbg( p_dec, "disabling direct rendering" );
909 p_sys->b_direct_rendering = 0;
910 return avcodec_default_get_buffer( p_context, p_ff_pic );
913 /* Get a new picture */
914 //p_sys->p_vout->render.b_allow_modify_pics = 0;
915 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
918 p_sys->b_direct_rendering = 0;
919 return avcodec_default_get_buffer( p_context, p_ff_pic );
921 p_sys->p_context->draw_horiz_band = NULL;
923 p_ff_pic->opaque = (void*)p_pic;
924 p_ff_pic->type = FF_BUFFER_TYPE_USER;
925 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
926 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
927 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
928 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
930 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
931 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
932 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
933 p_ff_pic->linesize[3] = 0;
935 if( p_ff_pic->reference != 0 ||
936 p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
938 p_dec->pf_picture_link( p_dec, p_pic );
941 /* FIXME what is that, should give good value */
942 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
947 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
950 decoder_t *p_dec = (decoder_t *)p_context->opaque;
953 if( !p_ff_pic->opaque )
955 avcodec_default_release_buffer( p_context, p_ff_pic );
959 p_pic = (picture_t*)p_ff_pic->opaque;
961 p_ff_pic->data[0] = NULL;
962 p_ff_pic->data[1] = NULL;
963 p_ff_pic->data[2] = NULL;
964 p_ff_pic->data[3] = NULL;
966 if( p_ff_pic->reference != 0 ||
967 p_dec->p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
969 p_dec->pf_picture_unlink( p_dec, p_pic );