1 /*****************************************************************************
2 * video.c: video decoder using the ffmpeg library
3 *****************************************************************************
4 * Copyright (C) 1999-2001 VideoLAN
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <vlc/decoder.h>
30 #include <vlc/input.h> /* hmmm, just for INPUT_RATE_DEFAULT */
33 #ifdef HAVE_FFMPEG_AVCODEC_H
34 # include <ffmpeg/avcodec.h>
41 /*****************************************************************************
42 * decoder_sys_t : decoder descriptor
43 *****************************************************************************/
46 /* Common part between video and audio decoder */
51 AVCodecContext *p_context;
54 /* Video decoder specific part */
60 BITMAPINFOHEADER *p_format;
62 /* for frame skipping algo */
66 /* how many decoded frames are late */
68 mtime_t i_late_frames_start;
70 /* for direct rendering */
71 int b_direct_rendering;
73 vlc_bool_t b_has_b_frames;
75 /* Hack to force display of still pictures */
76 vlc_bool_t b_first_frame;
78 int i_buffer_orig, i_buffer;
79 char *p_buffer_orig, *p_buffer;
81 /* Postprocessing handle */
84 vlc_bool_t b_pp_async;
88 /* FIXME (dummy palette for now) */
89 static AVPaletteControl palette_control;
91 /*****************************************************************************
93 *****************************************************************************/
94 static void ffmpeg_InitCodec ( decoder_t * );
95 static void ffmpeg_CopyPicture ( decoder_t *, picture_t *, AVFrame * );
96 static int ffmpeg_GetFrameBuf ( struct AVCodecContext *, AVFrame * );
97 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *, AVFrame * );
99 static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc )
101 uint8_t *p = (uint8_t*)&fcc;
102 return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
105 /*****************************************************************************
107 *****************************************************************************/
108 static uint32_t ffmpeg_PixFmtToChroma( int i_ff_chroma )
110 switch( i_ff_chroma )
112 case PIX_FMT_YUV420P:
113 case PIX_FMT_YUVJ420P: /* Hacky but better then chroma conversion */
114 return VLC_FOURCC('I','4','2','0');
115 case PIX_FMT_YUV422P:
116 case PIX_FMT_YUVJ422P: /* Hacky but better then chroma conversion */
117 return VLC_FOURCC('I','4','2','2');
118 case PIX_FMT_YUV444P:
119 case PIX_FMT_YUVJ444P: /* Hacky but better then chroma conversion */
120 return VLC_FOURCC('I','4','4','4');
123 return VLC_FOURCC('Y','U','Y','2');
126 return VLC_FOURCC('R','V','1','5');
128 return VLC_FOURCC('R','V','1','6');
130 return VLC_FOURCC('R','V','2','4');
132 return VLC_FOURCC('R','V','3','2');
134 return VLC_FOURCC('G','R','E','Y');
136 case PIX_FMT_YUV410P:
137 case PIX_FMT_YUV411P:
144 /* Returns a new picture buffer */
145 static inline picture_t *ffmpeg_NewPictBuf( decoder_t *p_dec,
146 AVCodecContext *p_context )
148 decoder_sys_t *p_sys = p_dec->p_sys;
151 p_dec->fmt_out.video.i_width = p_context->width;
152 p_dec->fmt_out.video.i_height = p_context->height;
153 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
155 if( !p_context->width || !p_context->height )
157 return NULL; /* invalid display size */
160 if( !p_dec->fmt_out.i_codec )
162 /* we make conversion if possible*/
163 p_dec->fmt_out.i_codec = VLC_FOURCC('I','4','2','0');
166 /* If an aspect-ratio was specified in the input format then force it */
167 if( p_dec->fmt_in.video.i_aspect )
169 p_dec->fmt_out.video.i_aspect = p_dec->fmt_in.video.i_aspect;
173 #if LIBAVCODEC_BUILD >= 4687
174 p_dec->fmt_out.video.i_aspect =
175 VOUT_ASPECT_FACTOR * ( av_q2d(p_context->sample_aspect_ratio) *
176 p_context->width / p_context->height );
177 p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num;
178 p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den;
180 p_dec->fmt_out.video.i_aspect =
181 VOUT_ASPECT_FACTOR * p_context->aspect_ratio;
183 if( p_dec->fmt_out.video.i_aspect == 0 )
185 p_dec->fmt_out.video.i_aspect =
186 VOUT_ASPECT_FACTOR * p_context->width / p_context->height;
190 #if LIBAVCODEC_BUILD >= 4754
191 if( p_context->time_base.num > 0 && p_context->time_base.den > 0 )
193 p_dec->fmt_out.video.i_frame_rate = p_context->time_base.den;
194 p_dec->fmt_out.video.i_frame_rate_base = p_context->time_base.num;
197 if( p_context->frame_rate > 0 && p_context->frame_rate_base > 0 )
199 p_dec->fmt_out.video.i_frame_rate = p_context->frame_rate;
200 p_dec->fmt_out.video.i_frame_rate_base = p_context->frame_rate_base;
204 p_pic = p_dec->pf_vout_buffer_new( p_dec );
207 if( p_sys->p_pp && p_sys->b_pp && !p_sys->b_pp_init )
209 E_(InitPostproc)( p_dec, p_sys->p_pp, p_context->width,
210 p_context->height, p_context->pix_fmt );
211 p_sys->b_pp_init = VLC_TRUE;
218 /*****************************************************************************
219 * InitVideo: initialize the video decoder
220 *****************************************************************************
221 * the ffmpeg codec will be opened, some memory allocated. The vout is not yet
222 * opened (done after the first decoded frame).
223 *****************************************************************************/
224 int E_(InitVideoDec)( decoder_t *p_dec, AVCodecContext *p_context,
225 AVCodec *p_codec, int i_codec_id, char *psz_namecodec )
227 decoder_sys_t *p_sys;
231 var_Get( p_dec->p_libvlc, "avcodec", &lockval );
233 /* Allocate the memory needed to store the decoder's structure */
234 if( ( p_dec->p_sys = p_sys =
235 (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
237 msg_Err( p_dec, "out of memory" );
241 p_dec->p_sys->p_context = p_context;
242 p_dec->p_sys->p_codec = p_codec;
243 p_dec->p_sys->i_codec_id = i_codec_id;
244 p_dec->p_sys->psz_namecodec = psz_namecodec;
245 p_sys->p_ff_pic = avcodec_alloc_frame();
247 /* ***** Fill p_context with init values ***** */
248 /* FIXME: remove when ffmpeg deals properly with avc1 */
249 if( p_dec->fmt_in.i_codec != VLC_FOURCC('a','v','c','1') )
251 p_sys->p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_codec );
252 p_sys->p_context->width = p_dec->fmt_in.video.i_width;
253 p_sys->p_context->height = p_dec->fmt_in.video.i_height;
254 p_sys->p_context->bits_per_sample = p_dec->fmt_in.video.i_bits_per_pixel;
256 /* ***** Get configuration of ffmpeg plugin ***** */
257 p_sys->p_context->workaround_bugs =
258 config_GetInt( p_dec, "ffmpeg-workaround-bugs" );
259 p_sys->p_context->error_resilience =
260 config_GetInt( p_dec, "ffmpeg-error-resilience" );
262 var_Create( p_dec, "grayscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
263 var_Get( p_dec, "grayscale", &val );
264 if( val.b_bool ) p_sys->p_context->flags |= CODEC_FLAG_GRAY;
266 var_Create( p_dec, "ffmpeg-vismv", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
267 var_Get( p_dec, "ffmpeg-vismv", &val );
268 #if LIBAVCODEC_BUILD >= 4698
269 if( val.i_int ) p_sys->p_context->debug_mv = val.i_int;
272 var_Create( p_dec, "ffmpeg-lowres", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
273 var_Get( p_dec, "ffmpeg-lowres", &val );
274 #if LIBAVCODEC_BUILD >= 4723
275 if( val.i_int > 0 && val.i_int <= 2 ) p_sys->p_context->lowres = val.i_int;
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 /* ***** ffmpeg direct rendering ***** */
284 p_sys->b_direct_rendering = 0;
285 var_Create( p_dec, "ffmpeg-dr", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
286 var_Get( p_dec, "ffmpeg-dr", &val );
287 if( val.b_bool && (p_sys->p_codec->capabilities & CODEC_CAP_DR1) &&
288 ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) &&
289 /* Apparently direct rendering doesn't work with YUV422P */
290 p_sys->p_context->pix_fmt != PIX_FMT_YUV422P &&
291 /* H264 uses too many reference frames */
292 p_sys->i_codec_id != CODEC_ID_H264 &&
293 !(p_sys->p_context->width % 16) && !(p_sys->p_context->height % 16) &&
294 #if LIBAVCODEC_BUILD >= 4698
295 !p_sys->p_context->debug_mv )
300 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
301 * so we need to do another check in ffmpeg_GetFrameBuf() */
302 p_sys->b_direct_rendering = 1;
307 p_sys->b_pp = p_sys->b_pp_async = p_sys->b_pp_init = VLC_FALSE;
308 p_sys->p_pp = E_(OpenPostproc)( p_dec, &p_sys->b_pp_async );
311 /* ffmpeg doesn't properly release old pictures when frames are skipped */
312 //if( p_sys->b_hurry_up ) p_sys->b_direct_rendering = 0;
313 if( p_sys->b_direct_rendering )
315 msg_Dbg( p_dec, "using direct rendering" );
316 p_sys->p_context->flags |= CODEC_FLAG_EMU_EDGE;
319 /* Always use our get_buffer wrapper so we can calculate the
321 p_sys->p_context->get_buffer = ffmpeg_GetFrameBuf;
322 p_sys->p_context->release_buffer = ffmpeg_ReleaseFrameBuf;
323 p_sys->p_context->opaque = p_dec;
325 /* ***** init this codec with special data ***** */
326 ffmpeg_InitCodec( p_dec );
328 /* ***** misc init ***** */
329 p_sys->input_pts = p_sys->input_dts = 0;
331 p_sys->b_has_b_frames = VLC_FALSE;
332 p_sys->b_first_frame = VLC_TRUE;
333 p_sys->i_late_frames = 0;
335 p_sys->i_buffer_orig = 1;
336 p_sys->p_buffer_orig = p_sys->p_buffer = malloc( p_sys->i_buffer_orig );
338 /* Set output properties */
339 p_dec->fmt_out.i_cat = VIDEO_ES;
340 p_dec->fmt_out.i_codec = ffmpeg_PixFmtToChroma( p_context->pix_fmt );
343 #if LIBAVCODEC_BUILD >= 4688
344 if( p_dec->fmt_in.video.p_palette )
345 p_sys->p_context->palctrl =
346 (AVPaletteControl *)p_dec->fmt_in.video.p_palette;
348 p_sys->p_context->palctrl = &palette_control;
351 /* ***** Open the codec ***** */
352 vlc_mutex_lock( lockval.p_address );
353 if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
355 vlc_mutex_unlock( lockval.p_address );
356 msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
360 vlc_mutex_unlock( lockval.p_address );
361 msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
367 /*****************************************************************************
368 * DecodeVideo: Called to decode one or more frames
369 *****************************************************************************/
370 picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
372 decoder_sys_t *p_sys = p_dec->p_sys;
374 int b_null_size = VLC_FALSE;
377 if( !pp_block || !*pp_block ) return NULL;
379 if( !p_sys->p_context->extradata_size && p_dec->fmt_in.i_extra )
380 ffmpeg_InitCodec( p_dec );
384 if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
387 p_sys->i_pts = 0; /* To make sure we recover properly */
389 p_sys->input_pts = p_sys->input_dts = 0;
390 p_sys->i_late_frames = 0;
392 block_Release( p_block );
396 if( p_block->i_flags & BLOCK_FLAG_PREROLL )
398 /* Do not care about late frames when prerolling
399 * TODO avoid decoding of non reference frame
400 * (ie all B except for H264 where it depends only on nal_ref_idc) */
401 p_sys->i_late_frames = 0;
404 if( !p_dec->b_pace_control && p_sys->i_late_frames > 0 &&
405 mdate() - p_sys->i_late_frames_start > I64C(5000000) )
409 msg_Err( p_dec, "more than 5 seconds of late video -> "
410 "dropping frame (computer too slow ?)" );
411 p_sys->i_pts = 0; /* To make sure we recover properly */
413 block_Release( p_block );
414 p_sys->i_late_frames--;
418 if( p_block->i_pts > 0 || p_block->i_dts > 0 )
420 p_sys->input_pts = p_block->i_pts;
421 p_sys->input_dts = p_block->i_dts;
423 /* Make sure we don't reuse the same timestamps twice */
424 p_block->i_pts = p_block->i_dts = 0;
427 /* TODO implement it in a better way */
428 /* A good idea could be to decode all I pictures and see for the other */
429 if( !p_dec->b_pace_control &&
430 p_sys->b_hurry_up && p_sys->i_late_frames > 4 )
433 if( p_sys->i_late_frames < 8 )
435 p_sys->p_context->hurry_up = 2;
439 /* picture too late, won't decode
440 * but break picture until a new I, and for mpeg4 ...*/
442 p_sys->i_late_frames--; /* needed else it will never be decrease */
443 block_Release( p_block );
450 if (!(p_block->i_flags & BLOCK_FLAG_PREROLL))
453 p_sys->p_context->hurry_up = 0;
458 p_sys->p_context->hurry_up = 1;
463 if( p_sys->p_context->width <= 0 || p_sys->p_context->height <= 0 )
465 p_sys->p_context->hurry_up = 5;
466 b_null_size = VLC_TRUE;
470 * Do the actual decoding now
473 /* Check if post-processing was enabled */
474 p_sys->b_pp = p_sys->b_pp_async;
476 /* Don't forget that ffmpeg requires a little more bytes
477 * that the real frame size */
478 if( p_block->i_buffer > 0 )
480 p_sys->i_buffer = p_block->i_buffer;
481 if( p_sys->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE >
482 p_sys->i_buffer_orig )
484 free( p_sys->p_buffer_orig );
485 p_sys->i_buffer_orig =
486 p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE;
487 p_sys->p_buffer_orig = malloc( p_sys->i_buffer_orig );
489 p_sys->p_buffer = p_sys->p_buffer_orig;
490 p_sys->i_buffer = p_block->i_buffer;
491 p_dec->p_vlc->pf_memcpy( p_sys->p_buffer, p_block->p_buffer,
493 memset( p_sys->p_buffer + p_block->i_buffer, 0,
494 FF_INPUT_BUFFER_PADDING_SIZE );
496 p_block->i_buffer = 0;
499 while( p_sys->i_buffer > 0 )
501 int i_used, b_gotpicture;
504 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
506 p_sys->p_buffer, p_sys->i_buffer );
507 if( b_null_size && p_sys->p_context->width > 0 &&
508 p_sys->p_context->height > 0 )
510 /* Reparse it to not drop the I frame */
511 b_null_size = VLC_FALSE;
512 p_sys->p_context->hurry_up = 0;
513 i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
515 p_sys->p_buffer, p_sys->i_buffer );
520 msg_Warn( p_dec, "cannot decode one frame (%d bytes)",
522 block_Release( p_block );
525 else if( i_used > p_sys->i_buffer )
527 i_used = p_sys->i_buffer;
531 p_sys->i_buffer -= i_used;
532 p_sys->p_buffer += i_used;
534 /* Nothing to display */
537 if( i_used == 0 ) break;
541 /* Update frame late count (except when doing preroll) */
542 if( p_sys->i_pts && p_sys->i_pts <= mdate() &&
543 !(p_block->i_flags & BLOCK_FLAG_PREROLL) )
545 p_sys->i_late_frames++;
546 if( p_sys->i_late_frames == 1 )
547 p_sys->i_late_frames_start = mdate();
551 p_sys->i_late_frames = 0;
554 if( !b_drawpicture || !p_sys->p_ff_pic->linesize[0] )
556 /* Do not display the picture */
560 if( !p_sys->p_ff_pic->opaque )
562 /* Get a new picture */
563 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
566 block_Release( p_block );
570 /* Fill p_picture_t from AVVideoFrame and do chroma conversion
572 ffmpeg_CopyPicture( p_dec, p_pic, p_sys->p_ff_pic );
576 p_pic = (picture_t *)p_sys->p_ff_pic->opaque;
580 if( p_sys->p_ff_pic->pts ) p_sys->i_pts = p_sys->p_ff_pic->pts;
582 /* Sanity check (seems to be needed for some streams ) */
583 if( p_sys->p_ff_pic->pict_type == FF_B_TYPE )
585 p_sys->b_has_b_frames = VLC_TRUE;
588 /* Send decoded frame to vout */
591 p_pic->date = p_sys->i_pts;
593 /* interpolate the next PTS */
594 #if LIBAVCODEC_BUILD >= 4754
595 if( p_dec->fmt_in.video.i_frame_rate > 0 &&
596 p_dec->fmt_in.video.i_frame_rate_base > 0 )
598 p_sys->i_pts += I64C(1000000) *
599 (2 + p_sys->p_ff_pic->repeat_pict) *
600 p_dec->fmt_in.video.i_frame_rate_base *
601 p_block->i_rate / INPUT_RATE_DEFAULT /
602 (2 * p_dec->fmt_in.video.i_frame_rate);
604 else if( p_sys->p_context->time_base.den > 0 )
606 p_sys->i_pts += I64C(1000000) *
607 (2 + p_sys->p_ff_pic->repeat_pict) *
608 p_sys->p_context->time_base.num *
609 p_block->i_rate / INPUT_RATE_DEFAULT /
610 (2 * p_sys->p_context->time_base.den);
613 if( p_sys->p_context->frame_rate > 0 )
615 p_sys->i_pts += I64C(1000000) *
616 (2 + p_sys->p_ff_pic->repeat_pict) *
617 p_sys->p_context->frame_rate_base *
618 p_block->i_rate / INPUT_RATE_DEFAULT /
619 (2 * p_sys->p_context->frame_rate);
623 if( p_sys->b_first_frame )
625 /* Hack to force display of still pictures */
626 p_sys->b_first_frame = VLC_FALSE;
627 p_pic->b_force = VLC_TRUE;
630 p_pic->i_nb_fields = 2 + p_sys->p_ff_pic->repeat_pict;
631 #if LIBAVCODEC_BUILD >= 4685
632 p_pic->b_progressive = !p_sys->p_ff_pic->interlaced_frame;
633 p_pic->b_top_field_first = p_sys->p_ff_pic->top_field_first;
640 p_dec->pf_vout_buffer_del( p_dec, p_pic );
644 block_Release( p_block );
648 /*****************************************************************************
649 * EndVideo: decoder destruction
650 *****************************************************************************
651 * This function is called when the thread ends after a successful
653 *****************************************************************************/
654 void E_(EndVideoDec)( decoder_t *p_dec )
656 decoder_sys_t *p_sys = p_dec->p_sys;
658 if( p_sys->p_ff_pic ) av_free( p_sys->p_ff_pic );
661 E_(ClosePostproc)( p_dec, p_sys->p_pp );
664 free( p_sys->p_buffer_orig );
667 /*****************************************************************************
668 * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg
669 *****************************************************************************/
670 static void ffmpeg_InitCodec( decoder_t *p_dec )
672 decoder_sys_t *p_sys = p_dec->p_sys;
673 int i_size = p_dec->fmt_in.i_extra;
675 if( !i_size ) return;
677 if( p_sys->i_codec_id == CODEC_ID_SVQ3 )
681 p_sys->p_context->extradata_size = i_size + 12;
682 p = p_sys->p_context->extradata =
683 malloc( p_sys->p_context->extradata_size );
685 memcpy( &p[0], "SVQ3", 4 );
686 memset( &p[4], 0, 8 );
687 memcpy( &p[12], p_dec->fmt_in.p_extra, i_size );
689 /* Now remove all atoms before the SMI one */
690 if( p_sys->p_context->extradata_size > 0x5a &&
691 strncmp( &p[0x56], "SMI ", 4 ) )
693 uint8_t *psz = &p[0x52];
695 while( psz < &p[p_sys->p_context->extradata_size - 8] )
697 int i_size = GetDWBE( psz );
700 /* FIXME handle 1 as long size */
703 if( !strncmp( &psz[4], "SMI ", 4 ) )
705 memmove( &p[0x52], psz,
706 &p[p_sys->p_context->extradata_size] - psz );
714 else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '0' ) ||
715 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '1', '3' ) ||
716 p_dec->fmt_in.i_codec == VLC_FOURCC( 'R', 'V', '2', '0' ) )
718 if( p_dec->fmt_in.i_extra == 8 )
720 p_sys->p_context->extradata_size = 8;
721 p_sys->p_context->extradata = malloc( 8 );
723 memcpy( p_sys->p_context->extradata,
724 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
725 p_sys->p_context->sub_id= ((uint32_t*)p_dec->fmt_in.p_extra)[1];
727 msg_Warn( p_dec, "using extra data for RV codec sub_id=%08x",
728 p_sys->p_context->sub_id );
733 p_sys->p_context->extradata_size = i_size;
734 p_sys->p_context->extradata =
735 malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
736 memcpy( p_sys->p_context->extradata,
737 p_dec->fmt_in.p_extra, i_size );
738 memset( &((uint8_t*)p_sys->p_context->extradata)[i_size],
739 0, FF_INPUT_BUFFER_PADDING_SIZE );
743 /*****************************************************************************
744 * ffmpeg_CopyPicture: copy a picture from ffmpeg internal buffers to a
745 * picture_t structure (when not in direct rendering mode).
746 *****************************************************************************/
747 static void ffmpeg_CopyPicture( decoder_t *p_dec,
748 picture_t *p_pic, AVFrame *p_ff_pic )
750 decoder_sys_t *p_sys = p_dec->p_sys;
752 if( ffmpeg_PixFmtToChroma( p_sys->p_context->pix_fmt ) )
754 int i_plane, i_size, i_line;
755 uint8_t *p_dst, *p_src;
756 int i_src_stride, i_dst_stride;
759 if( p_sys->p_pp && p_sys->b_pp )
760 E_(PostprocPict)( p_dec, p_sys->p_pp, p_pic, p_ff_pic );
763 for( i_plane = 0; i_plane < p_pic->i_planes; i_plane++ )
765 p_src = p_ff_pic->data[i_plane];
766 p_dst = p_pic->p[i_plane].p_pixels;
767 i_src_stride = p_ff_pic->linesize[i_plane];
768 i_dst_stride = p_pic->p[i_plane].i_pitch;
770 i_size = __MIN( i_src_stride, i_dst_stride );
771 for( i_line = 0; i_line < p_pic->p[i_plane].i_visible_lines;
774 p_dec->p_vlc->pf_memcpy( p_dst, p_src, i_size );
775 p_src += i_src_stride;
776 p_dst += i_dst_stride;
785 /* we need to convert to I420 */
786 switch( p_sys->p_context->pix_fmt )
788 case PIX_FMT_YUV410P:
789 case PIX_FMT_YUV411P:
792 for( i = 0; i < p_pic->i_planes; i++ )
794 dest_pic.data[i] = p_pic->p[i].p_pixels;
795 dest_pic.linesize[i] = p_pic->p[i].i_pitch;
797 img_convert( &dest_pic, PIX_FMT_YUV420P,
798 (AVPicture *)p_ff_pic,
799 p_sys->p_context->pix_fmt,
800 p_sys->p_context->width,
801 p_sys->p_context->height );
804 msg_Err( p_dec, "don't know how to convert chroma %i",
805 p_sys->p_context->pix_fmt );
812 /*****************************************************************************
813 * ffmpeg_GetFrameBuf: callback used by ffmpeg to get a frame buffer.
814 *****************************************************************************
815 * It is used for direct rendering as well as to get the right PTS for each
816 * decoded picture (even in indirect rendering mode).
817 *****************************************************************************/
818 static int ffmpeg_GetFrameBuf( struct AVCodecContext *p_context,
821 decoder_t *p_dec = (decoder_t *)p_context->opaque;
822 decoder_sys_t *p_sys = p_dec->p_sys;
825 /* Set picture PTS */
826 if( p_sys->input_pts )
828 p_ff_pic->pts = p_sys->input_pts;
830 else if( p_sys->input_dts )
832 /* Some demuxers only set the dts so let's try to find a useful
833 * timestamp from this */
834 if( !p_context->has_b_frames || !p_sys->b_has_b_frames ||
835 !p_ff_pic->reference || !p_sys->i_pts )
837 p_ff_pic->pts = p_sys->input_dts;
839 else p_ff_pic->pts = 0;
841 else p_ff_pic->pts = 0;
843 if( p_sys->i_pts ) /* make sure 1st frame has a pts > 0 */
845 p_sys->input_pts = p_sys->input_dts = 0;
848 p_ff_pic->opaque = 0;
850 /* Not much to do in indirect rendering mode */
851 if( !p_sys->b_direct_rendering || p_sys->b_pp )
853 return avcodec_default_get_buffer( p_context, p_ff_pic );
856 /* Some codecs set pix_fmt only after the 1st frame has been decoded,
857 * so this check is necessary. */
858 if( !ffmpeg_PixFmtToChroma( p_context->pix_fmt ) ||
859 p_sys->p_context->width % 16 || p_sys->p_context->height % 16 )
861 msg_Dbg( p_dec, "disabling direct rendering" );
862 p_sys->b_direct_rendering = 0;
863 return avcodec_default_get_buffer( p_context, p_ff_pic );
866 /* Get a new picture */
867 //p_sys->p_vout->render.b_allow_modify_pics = 0;
868 p_pic = ffmpeg_NewPictBuf( p_dec, p_sys->p_context );
871 p_sys->b_direct_rendering = 0;
872 return avcodec_default_get_buffer( p_context, p_ff_pic );
874 p_sys->p_context->draw_horiz_band = NULL;
876 p_ff_pic->opaque = (void*)p_pic;
877 p_ff_pic->type = FF_BUFFER_TYPE_USER;
878 p_ff_pic->data[0] = p_pic->p[0].p_pixels;
879 p_ff_pic->data[1] = p_pic->p[1].p_pixels;
880 p_ff_pic->data[2] = p_pic->p[2].p_pixels;
881 p_ff_pic->data[3] = NULL; /* alpha channel but I'm not sure */
883 p_ff_pic->linesize[0] = p_pic->p[0].i_pitch;
884 p_ff_pic->linesize[1] = p_pic->p[1].i_pitch;
885 p_ff_pic->linesize[2] = p_pic->p[2].i_pitch;
886 p_ff_pic->linesize[3] = 0;
888 if( p_ff_pic->reference != 0 )
890 p_dec->pf_picture_link( p_dec, p_pic );
893 /* FIXME what is that, should give good value */
894 p_ff_pic->age = 256*256*256*64; // FIXME FIXME from ffmpeg
899 static void ffmpeg_ReleaseFrameBuf( struct AVCodecContext *p_context,
902 decoder_t *p_dec = (decoder_t *)p_context->opaque;
905 if( !p_ff_pic->opaque )
907 avcodec_default_release_buffer( p_context, p_ff_pic );
911 p_pic = (picture_t*)p_ff_pic->opaque;
913 p_ff_pic->data[0] = NULL;
914 p_ff_pic->data[1] = NULL;
915 p_ff_pic->data[2] = NULL;
916 p_ff_pic->data[3] = NULL;
918 if( p_ff_pic->reference != 0 )
920 p_dec->pf_picture_unlink( p_dec, p_pic );