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_LIBAVCODEC_AVCODEC_H
39 # include <libavcodec/avcodec.h>
40 #elif defined(HAVE_FFMPEG_AVCODEC_H)
41 # include <ffmpeg/avcodec.h>
48 /*****************************************************************************
49 * decoder_sys_t : decoder descriptor
50 *****************************************************************************/
55 /* Video decoder specific part */
61 BITMAPINFOHEADER *p_format;
63 /* for frame skipping algo */
65 enum AVDiscard i_skip_frame;
66 enum AVDiscard i_skip_idct;
68 /* how many decoded frames are late */
70 mtime_t i_late_frames_start;
72 /* for direct rendering */
73 int b_direct_rendering;
77 /* Hack to force display of still pictures */
80 int i_buffer_orig, i_buffer;
81 char *p_buffer_orig, *p_buffer;
83 /* Postprocessing handle */
90 /* FIXME (dummy palette for now) */
91 static AVPaletteControl palette_control;
93 /*****************************************************************************
95 *****************************************************************************/
96 static void ffmpeg_InitCodec ( decoder_t * );
97 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
98 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
99 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
101 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
103 uint8_t *p = (uint8_t*)&fcc;
104 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
107 /*****************************************************************************
109 *****************************************************************************/
110 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
112 switch( i_ff_chroma )
114 case PIX_FMT_YUV420P:
115 case PIX_FMT_YUVJ420P: /* Hacky but better then chroma conversion */
116 return VLC_FOURCC('I','4','2','0');
117 case PIX_FMT_YUV422P:
118 case PIX_FMT_YUVJ422P: /* Hacky but better then chroma conversion */
119 return VLC_FOURCC('I','4','2','2');
120 case PIX_FMT_YUV444P:
121 case PIX_FMT_YUVJ444P: /* Hacky but better then chroma conversion */
122 return VLC_FOURCC('I','4','4','4');
125 return VLC_FOURCC('Y','U','Y','2');
127 #if defined(WORDS_BIGENDIAN)
129 return VLC_FOURCC('R','G','B','8');
131 return VLC_FOURCC('R','V','1','5');
133 return VLC_FOURCC('R','V','1','6');
135 return VLC_FOURCC('R','V','2','4');
137 #if defined(PIX_FMT_RGB8)
139 return VLC_FOURCC('R','G','B','8');
142 return VLC_FOURCC('R','V','1','5');
144 return VLC_FOURCC('R','V','1','6');
146 return VLC_FOURCC('R','V','2','4');
149 return VLC_FOURCC('R','V','3','2');
152 return VLC_FOURCC('R','G','B','A');
155 return VLC_FOURCC('G','R','E','Y');
157 case PIX_FMT_YUV410P:
158 case PIX_FMT_YUV411P:
164 /* Returns a new picture buffer */
165 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
166 AVCodecContext *p_context )
168 decoder_sys_t *p_sys = p_dec->p_sys;
171 p_dec->fmt_out.video.i_width = p_context->width;
172 p_dec->fmt_out.video.i_height = p_context->height;
173 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
175 if( !p_context->width || !p_context->height )
177 return NULL; /* invalid display size */
180 if( !p_dec->fmt_out.i_codec )
182 /* we make conversion if possible*/
183 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
186 /* If an aspect-ratio was specified in the input format then force it */
187 if( p_dec->fmt_in.video.i_aspect )
189 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
193 p_dec->fmt_out.video.i_aspect =
194 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
195 p_context->width / p_context->height );
196 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
197 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
199 if( p_dec->fmt_out.video.i_aspect == 0 )
201 p_dec->fmt_out.video.i_aspect =
202 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
206 if( p_dec->fmt_out.video.i_frame_rate > 0 &&
207 p_dec->fmt_out.video.i_frame_rate_base > 0 )
209 p_dec->fmt_out.video.i_frame_rate =
210 p_dec->fmt_in.video.i_frame_rate;
211 p_dec->fmt_out.video.i_frame_rate_base =
212 p_dec->fmt_in.video.i_frame_rate_base;
214 else if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
216 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
217 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
220 p_pic = p_dec->pf_vout_buffer_new( p_dec );
222 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
224 InitPostproc( p_sys->p_pp, p_context->width,
225 p_context->height, p_context->pix_fmt );
226 p_sys->b_pp_init = true;
232 /*****************************************************************************
233 * InitVideo: initialize the video decoder
234 *****************************************************************************
235 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
236 * opened (done after the first decoded frame).
237 *****************************************************************************/
238 int InitVideoDec( decoder_t *p_dec, AVCodecContext *p_context,
239 AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
241 decoder_sys_t *p_sys;
244 /* Allocate the memory needed to store the decoder's structure */
245 if( ( p_dec->p_sys = p_sys =
246 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
248 msg_Err( p_dec, "out of memory" );
251 memset( p_sys, 0, sizeof(decoder_sys_t) );
253 p_dec->p_sys->p_context = p_context;
254 p_dec->p_sys->p_codec = p_codec;
255 p_dec->p_sys->i_codec_id = i_codec_id;
256 p_dec->p_sys->psz_namecodec = psz_namecodec;
257 p_sys->p_ff_pic = avcodec_alloc_frame();
259 /* ***** Fill p_context with init values ***** */
260 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
261 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
262 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
263 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
265 /* ***** Get configuration of ffmpeg plugin ***** */
266 p_sys->p_context->workaround_bugs =
267 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
268 p_sys->p_context->error_resilience =
269 config_GetInt( p_dec, "ffmpeg-error-resilience" );
271 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
272 var_Get( p_dec, "grayscale", &val );
273 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
275 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
276 var_Get( p_dec, "ffmpeg-vismv", &val );
277 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
279 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
280 var_Get( p_dec, "ffmpeg-lowres", &val );
281 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
283 var_Create( p_dec, "ffmpeg-skiploopfilter",
284 VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
285 var_Get( p_dec, "ffmpeg-skiploopfilter", &val );
286 if( val.i_int > 0 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONREF;
287 if( val.i_int > 1 ) p_sys->p_context->skip_loop_filter = AVDISCARD_BIDIR;
288 if( val.i_int > 2 ) p_sys->p_context->skip_loop_filter = AVDISCARD_NONKEY;
289 if( val.i_int > 3 ) p_sys->p_context->skip_loop_filter = AVDISCARD_ALL;
291 /* ***** ffmpeg frame skipping ***** */
292 var_Create( p_dec, "ffmpeg-hurry-up", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
293 var_Get( p_dec, "ffmpeg-hurry-up", &val );
294 p_sys->b_hurry_up = val.b_bool;
296 var_Create( p_dec, "ffmpeg-skip-frame", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
297 var_Get( p_dec, "ffmpeg-skip-frame", &val );
301 p_sys->p_context->skip_frame = AVDISCARD_NONE;
304 p_sys->p_context->skip_frame = AVDISCARD_DEFAULT;
307 p_sys->p_context->skip_frame = AVDISCARD_BIDIR;
310 p_sys->p_context->skip_frame = AVDISCARD_NONKEY;
313 p_sys->p_context->skip_frame = AVDISCARD_ALL;
316 p_sys->p_context->skip_frame = AVDISCARD_NONE;
319 p_sys->i_skip_frame = p_sys->p_context->skip_frame;
321 var_Create( p_dec, "ffmpeg-skip-idct", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
322 var_Get( p_dec, "ffmpeg-skip-idct", &val );
326 p_sys->p_context->skip_idct = AVDISCARD_NONE;
329 p_sys->p_context->skip_idct = AVDISCARD_DEFAULT;
332 p_sys->p_context->skip_idct = AVDISCARD_BIDIR;
335 p_sys->p_context->skip_idct = AVDISCARD_NONKEY;
338 p_sys->p_context->skip_idct = AVDISCARD_ALL;
341 p_sys->p_context->skip_idct = AVDISCARD_NONE;
344 p_sys->i_skip_idct = p_sys->p_context->skip_idct;
346 /* ***** ffmpeg direct rendering ***** */
347 p_sys->b_direct_rendering = 0;
348 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
349 var_Get( p_dec, "ffmpeg-dr", &val );
350 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
351 /* Apparently direct rendering doesn't work with YUV422P */
352 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
353 /* H264 uses too many reference frames */
354 p_sys->i_codec_id != CODEC_ID_H264 &&
355 !p_sys->p_context->debug_mv )
357 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
358 * so we need to do another check in ffmpeg_GetFrameBuf() */
359 p_sys->b_direct_rendering = 1;
363 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = false;
364 p_sys->p_pp = OpenPostproc( p_dec, &p_sys->b_pp_async );
366 /* ffmpeg doesn't properly release old pictures when frames are skipped */
367 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
368 if( p_sys->b_direct_rendering )
370 msg_Dbg( p_dec, "using direct rendering" );
371 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
374 /* Always use our get_buffer wrapper so we can calculate the
376 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
377 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
378 p_sys->p_context->opaque = p_dec;
380 /* ***** init this codec with special data ***** */
381 ffmpeg_InitCodec( p_dec );
383 /* ***** misc init ***** */
384 p_sys->input_pts = p_sys->input_dts = 0;
386 p_sys->b_has_b_frames = false;
387 p_sys->b_first_frame = true;
388 p_sys->i_late_frames = 0;
390 p_sys->i_buffer_orig = 1;
391 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
393 /* Set output properties */
394 p_dec->fmt_out.i_cat = VIDEO_ES;
395 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
398 if( p_dec->fmt_in.video.p_palette )
399 p_sys->p_context->palctrl =
400 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
402 p_sys->p_context->palctrl = &palette_control;
404 /* ***** Open the codec ***** */
405 vlc_mutex_t *lock = var_AcquireMutex( "avcodec" );
412 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
414 vlc_mutex_unlock( lock );
415 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
419 vlc_mutex_unlock( lock );
420 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
426 /*****************************************************************************
427 * DecodeVideo: Called to decode one or more frames
428 *****************************************************************************/
429 picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
431 decoder_sys_t *p_sys = p_dec->p_sys;
433 int b_null_size = false;
436 if( !pp_block || !*pp_block ) return NULL;
438 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
439 ffmpeg_InitCodec( p_dec );
443 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
446 p_sys->i_pts = 0; /* To make sure we recover properly */
448 p_sys->input_pts = p_sys->input_dts = 0;
449 p_sys->i_late_frames = 0;
451 block_Release( p_block );
453 //if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
454 //avcodec_flush_buffers( p_sys->p_context );
458 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
460 /* Do not care about late frames when prerolling
461 * TODO avoid decoding of non reference frame
462 * (ie all B except for H264 where it depends only on nal_ref_idc) */
463 p_sys->i_late_frames = 0;
466 if( !p_dec->b_pace_control && (p_sys->i_late_frames > 0) &&
467 (mdate() - p_sys->i_late_frames_start > INT64_C(5000000)) )
471 msg_Err( p_dec, "more than 5 seconds of late video -> "
472 "dropping frame (computer too slow ?)" );
473 p_sys->i_pts = 0; /* To make sure we recover properly */
475 block_Release( p_block );
476 p_sys->i_late_frames--;
480 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
482 p_sys->input_pts = p_block->i_pts;
483 p_sys->input_dts = p_block->i_dts;
485 /* Make sure we don't reuse the same timestamps twice */
486 p_block->i_pts = p_block->i_dts = 0;
489 /* A good idea could be to decode all I pictures and see for the other */
490 if( !p_dec->b_pace_control &&
492 (p_sys->i_late_frames > 4) )
495 if( p_sys->i_late_frames < 8 )
497 p_sys->p_context->skip_frame =
498 (p_sys->i_skip_frame <= AVDISCARD_BIDIR) ?
499 AVDISCARD_BIDIR : p_sys->i_skip_frame;
503 /* picture too late, won't decode
504 * but break picture until a new I, and for mpeg4 ...*/
505 p_sys->i_late_frames--; /* needed else it will never be decrease */
506 block_Release( p_block );
513 if( p_sys->b_hurry_up )
514 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
515 if( !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
521 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
523 if( p_sys->b_hurry_up )
524 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
529 * Do the actual decoding now
532 /* Check if post-processing was enabled */
533 p_sys->b_pp = p_sys->b_pp_async;
535 /* Don't forget that ffmpeg requires a little more bytes
536 * that the real frame size */
537 if( p_block->i_buffer > 0 )
539 p_sys->i_buffer = p_block->i_buffer;
540 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
541 p_sys->i_buffer_orig )
543 free( p_sys->p_buffer_orig );
544 p_sys->i_buffer_orig =
545 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
546 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
548 p_sys->p_buffer = p_sys->p_buffer_orig;
549 p_sys->i_buffer = p_block->i_buffer;
550 vlc_memcpy( p_sys->p_buffer, p_block->p_buffer, p_block->i_buffer );
551 memset( p_sys->p_buffer + p_block->i_buffer, 0,
552 FF_INPUT_BUFFER_PADDING_SIZE );
554 p_block->i_buffer = 0;
557 while( p_sys->i_buffer > 0 )
559 int i_used, b_gotpicture;
562 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
564 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
565 if( b_null_size && p_sys->p_context->width > 0 &&
566 p_sys->p_context->height > 0 )
568 /* Reparse it to not drop the I frame */
570 if( p_sys->b_hurry_up )
571 p_sys->p_context->skip_frame = p_sys->i_skip_frame;
572 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
574 (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
579 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
581 block_Release( p_block );
584 else if( i_used > p_sys->i_buffer )
586 i_used = p_sys->i_buffer;
590 p_sys->i_buffer -= i_used;
591 p_sys->p_buffer += i_used;
593 /* Nothing to display */
596 if( i_used == 0 ) break;
600 /* Update frame late count (except when doing preroll) */
601 if( p_sys->i_pts && decoder_GetDisplayDate(p_dec, p_sys->i_pts) <= mdate() &&
602 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
604 p_sys->i_late_frames++;
605 if( p_sys->i_late_frames == 1 )
606 p_sys->i_late_frames_start = mdate();
610 p_sys->i_late_frames = 0;
613 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
615 /* Do not display the picture */
616 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
617 if( !b_drawpicture && p_pic )
618 p_dec->pf_vout_buffer_del( p_dec, p_pic );
622 if( !p_sys->p_ff_pic->opaque )
624 /* Get a new picture */
625 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
628 block_Release( p_block );
632 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
634 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
638 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
642 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
644 /* Sanity check (seems to be needed for some streams) */
645 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
647 p_sys->b_has_b_frames = true;
650 if( !p_dec->fmt_in.video.i_aspect )
652 /* Fetch again the aspect ratio in case it changed */
653 p_dec->fmt_out.video.i_aspect =
655 * ( av_q2d(p_sys->p_context->sample_aspect_ratio)
656 * p_sys->p_context->width / p_sys->p_context->height );
657 p_dec->fmt_out.video.i_sar_num
658 = p_sys->p_context->sample_aspect_ratio.num;
659 p_dec->fmt_out.video.i_sar_den
660 = p_sys->p_context->sample_aspect_ratio.den;
662 if( p_dec->fmt_out.video.i_aspect == 0 )
664 p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR
665 * p_sys->p_context->width / p_sys->p_context->height;
669 /* Send decoded frame to vout */
672 p_pic->date = p_sys->i_pts;
674 /* interpolate the next PTS */
675 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
676 p_dec->fmt_in.video.i_frame_rate_base > 0 )
678 p_sys->i_pts += INT64_C(1000000) *
679 (2 + p_sys->p_ff_pic->repeat_pict) *
680 p_dec->fmt_in.video.i_frame_rate_base *
681 p_block->i_rate / INPUT_RATE_DEFAULT /
682 (2 * p_dec->fmt_in.video.i_frame_rate);
684 else if( p_sys->p_context->time_base.den > 0 )
686 p_sys->i_pts += INT64_C(1000000) *
687 (2 + p_sys->p_ff_pic->repeat_pict) *
688 p_sys->p_context->time_base.num *
689 p_block->i_rate / INPUT_RATE_DEFAULT /
690 (2 * p_sys->p_context->time_base.den);
693 if( p_sys->b_first_frame )
695 /* Hack to force display of still pictures */
696 p_sys->b_first_frame = false;
697 p_pic->b_force = true;
700 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
701 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
702 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
708 p_dec->pf_vout_buffer_del( p_dec, p_pic );
712 block_Release( p_block );
716 /*****************************************************************************
717 * EndVideo: decoder destruction
718 *****************************************************************************
719 * This function is called when the thread ends after a successful
721 *****************************************************************************/
722 void EndVideoDec( decoder_t *p_dec )
724 decoder_sys_t *p_sys = p_dec->p_sys;
726 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
727 ClosePostproc( p_dec, p_sys->p_pp );
728 free( p_sys->p_buffer_orig );
731 /*****************************************************************************
732 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
733 *****************************************************************************/
734 static void ffmpeg_InitCodec( decoder_t *p_dec )
736 decoder_sys_t *p_sys = p_dec->p_sys;
737 int i_size = p_dec->fmt_in.i_extra;
739 if( !i_size ) return;
741 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
745 p_sys->p_context->extradata_size = i_size + 12;
746 p = p_sys->p_context->extradata =
747 malloc( p_sys->p_context->extradata_size );
749 memcpy( &p[0], "SVQ3", 4 );
750 memset( &p[4], 0, 8 );
751 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
753 /* Now remove all atoms before the SMI one */
754 if( p_sys->p_context->extradata_size > 0x5a &&
755 strncmp( (char*)&p[0x56], "SMI ", 4 ) )
757 uint8_t *psz = &p[0x52];
759 while( psz < &p[p_sys->p_context->extradata_size - 8] )
761 int i_size = GetDWBE( psz );
764 /* FIXME handle 1 as long size */
767 if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
769 memmove( &p[0x52], psz,
770 &p[p_sys->p_context->extradata_size] - psz );
778 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
779 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
780 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
782 if( p_dec->fmt_in.i_extra == 8 )
784 p_sys->p_context->extradata_size = 8;
785 p_sys->p_context->extradata = malloc( 8 );
787 memcpy( p_sys->p_context->extradata,
788 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
789 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
791 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
792 p_sys->p_context->sub_id );
797 p_sys->p_context->extradata_size = i_size;
798 p_sys->p_context->extradata =
799 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
800 memcpy( p_sys->p_context->extradata,
801 p_dec->fmt_in.p_extra, i_size );
802 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
803 0, FF_INPUT_BUFFER_PADDING_SIZE );
807 /*****************************************************************************
808 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
809 * picture_t structure (when not in direct rendering mode).
810 *****************************************************************************/
811 static void ffmpeg_CopyPicture( decoder_t *p_dec,
812 picture_t *p_pic, AVFrame *p_ff_pic )
814 decoder_sys_t *p_sys = p_dec->p_sys;
816 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
818 int i_plane, i_size, i_line;
819 uint8_t *p_dst, *p_src;
820 int i_src_stride, i_dst_stride;
822 if( p_sys->p_pp && p_sys->b_pp )
823 PostprocPict( p_sys->p_pp, p_pic, p_ff_pic );
826 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
828 p_src = p_ff_pic->data[i_plane];
829 p_dst = p_pic->p[i_plane].p_pixels;
830 i_src_stride = p_ff_pic->linesize[i_plane];
831 i_dst_stride = p_pic->p[i_plane].i_pitch;
833 i_size = __MIN( i_src_stride, i_dst_stride );
834 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
837 vlc_memcpy( p_dst, p_src, i_size );
838 p_src += i_src_stride;
839 p_dst += i_dst_stride;
849 /* we need to convert to I420 */
850 switch( p_sys->p_context->pix_fmt )
852 case PIX_FMT_YUV410P:
853 case PIX_FMT_YUV411P:
856 #if defined(PIX_FMT_RGB8)
859 #if defined(PIX_FMT_BRG32)
863 #if defined(PIX_FMT_BGR8)
867 for( i = 0; i < p_pic->i_planes; i++ )
869 dest_pic.data[i] = p_pic->p[i].p_pixels;
870 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
872 #if !defined(HAVE_LIBSWSCALE_SWSCALE_H) && !defined(HAVE_FFMPEG_SWSCALE_H) && !defined(HAVE_LIBSWSCALE_TREE)
873 img_convert( &dest_pic, PIX_FMT_YUV420P,
874 (AVPicture *)p_ff_pic,
875 p_sys->p_context->pix_fmt,
876 p_sys->p_context->width,
877 p_sys->p_context->height );
881 msg_Err( p_dec, "don't know how to convert chroma %i",
882 p_sys->p_context->pix_fmt );
889 /*****************************************************************************
890 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
891 *****************************************************************************
892 * It is used for direct rendering as well as to get the right PTS for each
893 * decoded picture (even in indirect rendering mode).
894 *****************************************************************************/
895 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
898 decoder_t *p_dec = (decoder_t *)p_context->opaque;
899 decoder_sys_t *p_sys = p_dec->p_sys;
902 /* Set picture PTS */
903 if( p_sys->input_pts )
905 p_ff_pic->pts = p_sys->input_pts;
907 else if( p_sys->input_dts )
909 /* Some demuxers only set the dts so let's try to find a useful
910 * timestamp from this */
911 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
912 !p_ff_pic->reference || !p_sys->i_pts )
914 p_ff_pic->pts = p_sys->input_dts;
916 else p_ff_pic->pts = 0;
918 else p_ff_pic->pts = 0;
920 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
922 p_sys->input_pts = p_sys->input_dts = 0;
925 p_ff_pic->opaque = 0;
927 /* Not much to do in indirect rendering mode */
928 if( !p_sys->b_direct_rendering || p_sys->b_pp )
930 return avcodec_default_get_buffer( p_context, p_ff_pic );
933 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
934 * so this check is necessary. */
935 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
936 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
938 msg_Dbg( p_dec, "disabling direct rendering" );
939 p_sys->b_direct_rendering = 0;
940 return avcodec_default_get_buffer( p_context, p_ff_pic );
943 /* Get a new picture */
944 //p_sys->p_vout->render.b_allow_modify_pics = 0;
945 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
948 p_sys->b_direct_rendering = 0;
949 return avcodec_default_get_buffer( p_context, p_ff_pic );
951 p_sys->p_context->draw_horiz_band = NULL;
953 p_ff_pic->opaque = (void*)p_pic;
954 p_ff_pic->type = FF_BUFFER_TYPE_USER;
955 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
956 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
957 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
958 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
960 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
961 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
962 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
963 p_ff_pic->linesize[3] = 0;
965 if( p_ff_pic->reference != 0 ||
966 p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
968 p_dec->pf_picture_link( p_dec, p_pic );
971 /* FIXME what is that, should give good value */
972 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
977 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
980 decoder_t *p_dec = (decoder_t *)p_context->opaque;
983 if( !p_ff_pic->opaque )
985 avcodec_default_release_buffer( p_context, p_ff_pic );
989 p_pic = (picture_t*)p_ff_pic->opaque;
991 p_ff_pic->data[0] = NULL;
992 p_ff_pic->data[1] = NULL;
993 p_ff_pic->data[2] = NULL;
994 p_ff_pic->data[3] = NULL;
996 if( p_ff_pic->reference != 0 ||
997 p_dec->p_sys->i_codec_id == CODEC_ID_H264 /* Bug in libavcodec */ )
999 p_dec->pf_picture_unlink( p_dec, p_pic );