1 /*****************************************************************************
2 * video.c: transcoding stream output module (video)
3 *****************************************************************************
4 * Copyright (C) 2003-2009 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
10 * Antoine Cellerier <dionoea at videolan dot org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
31 #include "transcode.h"
36 #define ENC_FRAMERATE (25 * 1000 + .5)
37 #define ENC_FRAMERATE_BASE 1000
39 struct decoder_owner_sys_t
41 sout_stream_sys_t *p_sys;
44 static inline void video_timer_start( encoder_t * p_encoder )
46 stats_TimerStart( p_encoder, "encoding video frame",
47 STATS_TIMER_VIDEO_FRAME_ENCODING );
50 static inline void video_timer_stop( encoder_t * p_encoder )
52 stats_TimerStop( p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
55 static inline void video_timer_close( encoder_t * p_encoder )
57 stats_TimerDump( p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
58 stats_TimerClean( p_encoder, STATS_TIMER_VIDEO_FRAME_ENCODING );
61 static void video_del_buffer_decoder( decoder_t *p_decoder, picture_t *p_pic )
63 VLC_UNUSED(p_decoder);
64 picture_Release( p_pic );
67 static void video_link_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
70 picture_Hold( p_pic );
73 static void video_unlink_picture_decoder( decoder_t *p_dec, picture_t *p_pic )
76 picture_Release( p_pic );
79 static picture_t *video_new_buffer_decoder( decoder_t *p_dec )
81 sout_stream_sys_t *p_ssys = p_dec->p_owner->p_sys;
82 if( p_ssys->i_threads >= 1 )
84 int i_first_pic = p_ssys->i_first_pic;
86 if( p_ssys->i_first_pic != p_ssys->i_last_pic )
88 /* Encoder still has stuff to encode, wait to clear-up the list */
89 while( p_ssys->i_first_pic == i_first_pic )
91 #warning THERE IS DEFINITELY A BUG! LOCKING IS INSUFFICIENT!
98 p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
99 return picture_NewFromFormat( &p_dec->fmt_out.video );
102 static picture_t *transcode_video_filter_buffer_new( filter_t *p_filter )
104 p_filter->fmt_out.video.i_chroma = p_filter->fmt_out.i_codec;
105 return picture_NewFromFormat( &p_filter->fmt_out.video );
107 static void transcode_video_filter_buffer_del( filter_t *p_filter, picture_t *p_pic )
109 VLC_UNUSED(p_filter);
110 picture_Release( p_pic );
113 static int transcode_video_filter_allocation_init( filter_t *p_filter,
117 p_filter->pf_video_buffer_new = transcode_video_filter_buffer_new;
118 p_filter->pf_video_buffer_del = transcode_video_filter_buffer_del;
122 static void transcode_video_filter_allocation_clear( filter_t *p_filter )
124 VLC_UNUSED(p_filter);
127 static void* EncoderThread( vlc_object_t* p_this )
129 sout_stream_sys_t *p_sys = (sout_stream_sys_t*)p_this;
130 sout_stream_id_t *id = p_sys->id_video;
132 int canc = vlc_savecancel ();
134 while( vlc_object_alive (p_sys) && !p_sys->b_error )
138 vlc_mutex_lock( &p_sys->lock_out );
139 while( p_sys->i_last_pic == p_sys->i_first_pic )
141 vlc_cond_wait( &p_sys->cond, &p_sys->lock_out );
142 if( !vlc_object_alive (p_sys) || p_sys->b_error ) break;
144 if( !vlc_object_alive (p_sys) || p_sys->b_error )
146 vlc_mutex_unlock( &p_sys->lock_out );
150 p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
151 p_sys->i_first_pic %= PICTURE_RING_SIZE;
152 vlc_mutex_unlock( &p_sys->lock_out );
154 video_timer_start( id->p_encoder );
155 p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
156 video_timer_stop( id->p_encoder );
158 vlc_mutex_lock( &p_sys->lock_out );
159 block_ChainAppend( &p_sys->p_buffers, p_block );
161 vlc_mutex_unlock( &p_sys->lock_out );
162 picture_Release( p_pic );
165 while( p_sys->i_last_pic != p_sys->i_first_pic )
167 p_pic = p_sys->pp_pics[p_sys->i_first_pic++];
168 p_sys->i_first_pic %= PICTURE_RING_SIZE;
169 picture_Release( p_pic );
171 block_ChainRelease( p_sys->p_buffers );
173 vlc_restorecancel (canc);
177 int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_t *id )
179 sout_stream_sys_t *p_sys = p_stream->p_sys;
182 * Initialization of decoder structures
184 id->p_decoder->fmt_out = id->p_decoder->fmt_in;
185 id->p_decoder->fmt_out.i_extra = 0;
186 id->p_decoder->fmt_out.p_extra = 0;
187 id->p_decoder->pf_decode_video = NULL;
188 id->p_decoder->pf_get_cc = NULL;
189 id->p_decoder->pf_get_cc = 0;
190 id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
191 id->p_decoder->pf_vout_buffer_del = video_del_buffer_decoder;
192 id->p_decoder->pf_picture_link = video_link_picture_decoder;
193 id->p_decoder->pf_picture_unlink = video_unlink_picture_decoder;
194 id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
195 if( !id->p_decoder->p_owner )
198 id->p_decoder->p_owner->p_sys = p_sys;
199 /* id->p_decoder->p_cfg = p_sys->p_video_cfg; */
201 id->p_decoder->p_module =
202 module_need( id->p_decoder, "decoder", "$codec", false );
204 if( !id->p_decoder->p_module )
206 msg_Err( p_stream, "cannot find video decoder" );
207 free( id->p_decoder->p_owner );
213 * Because some info about the decoded input will only be available
214 * once the first frame is decoded, we actually only test the availability
215 * of the encoder here.
218 /* Initialization of encoder format structures */
219 es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
220 id->p_decoder->fmt_out.i_codec );
221 id->p_encoder->fmt_in.video.i_chroma = id->p_decoder->fmt_out.i_codec;
223 /* The dimensions will be set properly later on.
224 * Just put sensible values so we can test an encoder is available. */
225 id->p_encoder->fmt_in.video.i_width =
226 id->p_encoder->fmt_out.video.i_width
227 ? id->p_encoder->fmt_out.video.i_width
228 : id->p_decoder->fmt_in.video.i_width
229 ? id->p_decoder->fmt_in.video.i_width : 16;
230 id->p_encoder->fmt_in.video.i_height =
231 id->p_encoder->fmt_out.video.i_height
232 ? id->p_encoder->fmt_out.video.i_height
233 : id->p_decoder->fmt_in.video.i_height
234 ? id->p_decoder->fmt_in.video.i_height : 16;
235 id->p_encoder->fmt_in.video.i_frame_rate = ENC_FRAMERATE;
236 id->p_encoder->fmt_in.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
238 id->p_encoder->i_threads = p_sys->i_threads;
239 id->p_encoder->p_cfg = p_sys->p_video_cfg;
241 id->p_encoder->p_module =
242 module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
243 if( !id->p_encoder->p_module )
245 msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s). Take a look few lines earlier to see possible reason.",
246 p_sys->psz_venc ? p_sys->psz_venc : "any",
247 (char *)&p_sys->i_vcodec );
248 module_unneed( id->p_decoder, id->p_decoder->p_module );
249 id->p_decoder->p_module = 0;
250 free( id->p_decoder->p_owner );
254 /* Close the encoder.
255 * We'll open it only when we have the first frame. */
256 module_unneed( id->p_encoder, id->p_encoder->p_module );
257 if( id->p_encoder->fmt_out.p_extra )
259 free( id->p_encoder->fmt_out.p_extra );
260 id->p_encoder->fmt_out.p_extra = NULL;
261 id->p_encoder->fmt_out.i_extra = 0;
263 id->p_encoder->p_module = NULL;
265 if( p_sys->i_threads >= 1 )
267 int i_priority = p_sys->b_high_priority ? VLC_THREAD_PRIORITY_OUTPUT :
268 VLC_THREAD_PRIORITY_VIDEO;
269 p_sys->id_video = id;
270 vlc_mutex_init( &p_sys->lock_out );
271 vlc_cond_init( &p_sys->cond );
272 memset( p_sys->pp_pics, 0, sizeof(p_sys->pp_pics) );
273 p_sys->i_first_pic = 0;
274 p_sys->i_last_pic = 0;
275 p_sys->p_buffers = NULL;
276 p_sys->b_die = p_sys->b_error = 0;
277 if( vlc_thread_create( p_sys, "encoder", EncoderThread, i_priority ) )
279 msg_Err( p_stream, "cannot spawn encoder thread" );
280 module_unneed( id->p_decoder, id->p_decoder->p_module );
281 id->p_decoder->p_module = 0;
282 free( id->p_decoder->p_owner );
289 static void transcode_video_filter_init( sout_stream_t *p_stream,
290 sout_stream_id_t *id )
293 id->p_f_chain = filter_chain_New( p_stream, "video filter2",
295 transcode_video_filter_allocation_init,
296 transcode_video_filter_allocation_clear,
299 if( p_stream->p_sys->b_deinterlace )
301 filter_chain_AppendFilter( id->p_f_chain,
302 p_stream->p_sys->psz_deinterlace,
303 p_stream->p_sys->p_deinterlace_cfg,
304 &id->p_decoder->fmt_out,
305 &id->p_decoder->fmt_out );
308 /* Take care of the scaling and chroma conversions */
309 if( ( id->p_decoder->fmt_out.video.i_chroma !=
310 id->p_encoder->fmt_in.video.i_chroma ) ||
311 ( id->p_decoder->fmt_out.video.i_width !=
312 id->p_encoder->fmt_in.video.i_width ) ||
313 ( id->p_decoder->fmt_out.video.i_height !=
314 id->p_encoder->fmt_in.video.i_height ) )
316 filter_chain_AppendFilter( id->p_f_chain,
318 &id->p_decoder->fmt_out,
319 &id->p_encoder->fmt_in );
322 if( p_stream->p_sys->psz_vf2 )
324 const es_format_t *p_fmt_out;
325 id->p_uf_chain = filter_chain_New( p_stream, "video filter2",
327 transcode_video_filter_allocation_init,
328 transcode_video_filter_allocation_clear,
330 filter_chain_Reset( id->p_uf_chain, &id->p_encoder->fmt_in,
331 &id->p_encoder->fmt_in );
332 filter_chain_AppendFromString( id->p_uf_chain, p_stream->p_sys->psz_vf2 );
333 p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
334 es_format_Copy( &id->p_encoder->fmt_in, p_fmt_out );
335 id->p_encoder->fmt_out.video.i_width =
336 id->p_encoder->fmt_in.video.i_width;
337 id->p_encoder->fmt_out.video.i_height =
338 id->p_encoder->fmt_in.video.i_height;
339 id->p_encoder->fmt_out.video.i_sar_num =
340 id->p_encoder->fmt_in.video.i_sar_num;
341 id->p_encoder->fmt_out.video.i_sar_den =
342 id->p_encoder->fmt_in.video.i_sar_den;
347 static void transcode_video_encoder_init( sout_stream_t *p_stream,
348 sout_stream_id_t *id )
350 sout_stream_sys_t *p_sys = p_stream->p_sys;
353 * width/height of source */
354 int i_src_width = id->p_decoder->fmt_out.video.i_width;
355 int i_src_height = id->p_decoder->fmt_out.video.i_height;
357 /* with/height scaling */
358 float f_scale_width = 1;
359 float f_scale_height = 1;
361 /* width/height of output stream */
366 float f_aspect = (double)id->p_decoder->fmt_out.video.i_sar_num *
367 id->p_decoder->fmt_out.video.i_width /
368 id->p_decoder->fmt_out.video.i_sar_den /
369 id->p_decoder->fmt_out.video.i_height;
371 msg_Dbg( p_stream, "decoder aspect is %f:1", f_aspect );
373 /* Change f_aspect from source frame to source pixel */
374 f_aspect = f_aspect * i_src_height / i_src_width;
375 msg_Dbg( p_stream, "source pixel aspect is %f:1", f_aspect );
377 /* Calculate scaling factor for specified parameters */
378 if( id->p_encoder->fmt_out.video.i_width <= 0 &&
379 id->p_encoder->fmt_out.video.i_height <= 0 && p_sys->f_scale )
381 /* Global scaling. Make sure width will remain a factor of 16 */
384 int i_new_width = i_src_width * p_sys->f_scale;
386 if( i_new_width % 16 <= 7 && i_new_width >= 16 )
387 i_new_width -= i_new_width % 16;
389 i_new_width += 16 - i_new_width % 16;
391 f_real_scale = (float)( i_new_width ) / (float) i_src_width;
393 i_new_height = __MAX( 16, i_src_height * (float)f_real_scale );
395 f_scale_width = f_real_scale;
396 f_scale_height = (float) i_new_height / (float) i_src_height;
398 else if( id->p_encoder->fmt_out.video.i_width > 0 &&
399 id->p_encoder->fmt_out.video.i_height <= 0 )
401 /* Only width specified */
402 f_scale_width = (float)id->p_encoder->fmt_out.video.i_width/i_src_width;
403 f_scale_height = f_scale_width;
405 else if( id->p_encoder->fmt_out.video.i_width <= 0 &&
406 id->p_encoder->fmt_out.video.i_height > 0 )
408 /* Only height specified */
409 f_scale_height = (float)id->p_encoder->fmt_out.video.i_height/i_src_height;
410 f_scale_width = f_scale_height;
412 else if( id->p_encoder->fmt_out.video.i_width > 0 &&
413 id->p_encoder->fmt_out.video.i_height > 0 )
415 /* Width and height specified */
416 f_scale_width = (float)id->p_encoder->fmt_out.video.i_width/i_src_width;
417 f_scale_height = (float)id->p_encoder->fmt_out.video.i_height/i_src_height;
420 /* check maxwidth and maxheight */
421 if( p_sys->i_maxwidth && f_scale_width > (float)p_sys->i_maxwidth /
424 f_scale_width = (float)p_sys->i_maxwidth / i_src_width;
427 if( p_sys->i_maxheight && f_scale_height > (float)p_sys->i_maxheight /
430 f_scale_height = (float)p_sys->i_maxheight / i_src_height;
434 /* Change aspect ratio from source pixel to scaled pixel */
435 f_aspect = f_aspect * f_scale_height / f_scale_width;
436 msg_Dbg( p_stream, "scaled pixel aspect is %f:1", f_aspect );
438 /* f_scale_width and f_scale_height are now final */
439 /* Calculate width, height from scaling
440 * Make sure its multiple of 2
442 i_dst_width = 2 * (int)(f_scale_width*i_src_width/2+0.5);
443 i_dst_height = 2 * (int)(f_scale_height*i_src_height/2+0.5);
445 /* Change aspect ratio from scaled pixel to output frame */
446 f_aspect = f_aspect * i_dst_width / i_dst_height;
448 /* Store calculated values */
449 id->p_encoder->fmt_out.video.i_width =
450 id->p_encoder->fmt_out.video.i_visible_width = i_dst_width;
451 id->p_encoder->fmt_out.video.i_height =
452 id->p_encoder->fmt_out.video.i_visible_height = i_dst_height;
454 id->p_encoder->fmt_in.video.i_width =
455 id->p_encoder->fmt_in.video.i_visible_width = i_dst_width;
456 id->p_encoder->fmt_in.video.i_height =
457 id->p_encoder->fmt_in.video.i_visible_height = i_dst_height;
459 msg_Dbg( p_stream, "source %ix%i, destination %ix%i",
460 i_src_width, i_src_height,
461 i_dst_width, i_dst_height
464 /* Handle frame rate conversion */
465 if( !id->p_encoder->fmt_out.video.i_frame_rate ||
466 !id->p_encoder->fmt_out.video.i_frame_rate_base )
468 if( id->p_decoder->fmt_out.video.i_frame_rate &&
469 id->p_decoder->fmt_out.video.i_frame_rate_base )
471 id->p_encoder->fmt_out.video.i_frame_rate =
472 id->p_decoder->fmt_out.video.i_frame_rate;
473 id->p_encoder->fmt_out.video.i_frame_rate_base =
474 id->p_decoder->fmt_out.video.i_frame_rate_base;
478 /* Pick a sensible default value */
479 id->p_encoder->fmt_out.video.i_frame_rate = ENC_FRAMERATE;
480 id->p_encoder->fmt_out.video.i_frame_rate_base = ENC_FRAMERATE_BASE;
484 id->p_encoder->fmt_in.video.i_frame_rate =
485 id->p_encoder->fmt_out.video.i_frame_rate;
486 id->p_encoder->fmt_in.video.i_frame_rate_base =
487 id->p_encoder->fmt_out.video.i_frame_rate_base;
489 date_Init( &id->interpolated_pts,
490 id->p_encoder->fmt_out.video.i_frame_rate,
491 id->p_encoder->fmt_out.video.i_frame_rate_base );
493 /* Check whether a particular aspect ratio was requested */
494 if( id->p_encoder->fmt_out.video.i_sar_num <= 0 ||
495 id->p_encoder->fmt_out.video.i_sar_den <= 0 )
497 id->p_encoder->fmt_out.video.i_sar_num = id->p_decoder->fmt_out.video.i_sar_num * i_src_width / i_dst_width;
498 id->p_encoder->fmt_out.video.i_sar_den = id->p_decoder->fmt_out.video.i_sar_den * i_src_height / i_dst_height;
500 vlc_ureduce( &id->p_encoder->fmt_out.video.i_sar_num,
501 &id->p_encoder->fmt_out.video.i_sar_den,
502 id->p_encoder->fmt_out.video.i_sar_num,
503 id->p_encoder->fmt_out.video.i_sar_den,
506 id->p_encoder->fmt_in.video.i_sar_num =
507 id->p_encoder->fmt_out.video.i_sar_num;
508 id->p_encoder->fmt_in.video.i_sar_den =
509 id->p_encoder->fmt_out.video.i_sar_den;
511 msg_Dbg( p_stream, "encoder aspect is %i:%i",
512 id->p_encoder->fmt_out.video.i_sar_num * id->p_encoder->fmt_out.video.i_width,
513 id->p_encoder->fmt_out.video.i_sar_den * id->p_encoder->fmt_out.video.i_height );
515 id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
518 static int transcode_video_encoder_open( sout_stream_t *p_stream,
519 sout_stream_id_t *id )
521 sout_stream_sys_t *p_sys = p_stream->p_sys;
524 msg_Dbg( p_stream, "destination (after video filters) %ix%i",
525 id->p_encoder->fmt_in.video.i_width,
526 id->p_encoder->fmt_in.video.i_height );
528 id->p_encoder->p_module =
529 module_need( id->p_encoder, "encoder", p_sys->psz_venc, true );
530 if( !id->p_encoder->p_module )
532 msg_Err( p_stream, "cannot find video encoder (module:%s fourcc:%4.4s)",
533 p_sys->psz_venc ? p_sys->psz_venc : "any",
534 (char *)&p_sys->i_vcodec );
538 id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
541 id->p_encoder->fmt_out.i_codec =
542 vlc_fourcc_GetCodec( VIDEO_ES, id->p_encoder->fmt_out.i_codec );
544 id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
547 msg_Err( p_stream, "cannot add this stream" );
554 void transcode_video_close( sout_stream_t *p_stream,
555 sout_stream_id_t *id )
557 if( p_stream->p_sys->i_threads >= 1 )
559 vlc_mutex_lock( &p_stream->p_sys->lock_out );
560 vlc_object_kill( p_stream->p_sys );
561 vlc_cond_signal( &p_stream->p_sys->cond );
562 vlc_mutex_unlock( &p_stream->p_sys->lock_out );
563 vlc_thread_join( p_stream->p_sys );
564 vlc_mutex_destroy( &p_stream->p_sys->lock_out );
565 vlc_cond_destroy( &p_stream->p_sys->cond );
568 video_timer_close( id->p_encoder );
571 if( id->p_decoder->p_module )
572 module_unneed( id->p_decoder, id->p_decoder->p_module );
573 if( id->p_decoder->p_description )
574 vlc_meta_Delete( id->p_decoder->p_description );
576 free( id->p_decoder->p_owner );
579 if( id->p_encoder->p_module )
580 module_unneed( id->p_encoder, id->p_encoder->p_module );
584 filter_chain_Delete( id->p_f_chain );
586 filter_chain_Delete( id->p_uf_chain );
589 int transcode_video_process( sout_stream_t *p_stream, sout_stream_id_t *id,
590 block_t *in, block_t **out )
592 sout_stream_sys_t *p_sys = p_stream->p_sys;
593 bool b_need_duplicate = false;
594 picture_t *p_pic, *p_pic2 = NULL;
601 video_timer_start( id->p_encoder );
602 p_block = id->p_encoder->pf_encode_video(id->p_encoder, NULL );
603 video_timer_stop( id->p_encoder );
604 block_ChainAppend( out, p_block );
610 while( (p_pic = id->p_decoder->pf_decode_video( id->p_decoder, &in )) )
612 subpicture_t *p_subpic = NULL;
614 sout_UpdateStatistic( p_stream->p_sout, SOUT_STATISTIC_DECODED_VIDEO, 1 );
616 if( p_stream->p_sout->i_out_pace_nocontrol && p_sys->b_hurry_up )
618 mtime_t current_date = mdate();
619 if( current_date + 50000 > p_pic->date )
621 msg_Dbg( p_stream, "late picture skipped (%"PRId64")",
622 current_date + 50000 - p_pic->date );
623 picture_Release( p_pic );
628 if( p_sys->b_master_sync )
630 mtime_t i_video_drift;
631 mtime_t i_master_drift = p_sys->i_master_drift;
634 i_pts = date_Get( &id->interpolated_pts ) + 1;
635 if ( p_pic->date - i_pts > MASTER_SYNC_MAX_DRIFT
636 || p_pic->date - i_pts < -MASTER_SYNC_MAX_DRIFT )
638 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
639 date_Set( &id->interpolated_pts, p_pic->date );
640 i_pts = p_pic->date + 1;
642 i_video_drift = p_pic->date - i_pts;
643 b_need_duplicate = false;
645 /* Set the pts of the frame being encoded */
648 if( i_video_drift < (i_master_drift - 50000) )
651 msg_Dbg( p_stream, "dropping frame (%i)",
652 (int)(i_video_drift - i_master_drift) );
654 picture_Release( p_pic );
657 else if( i_video_drift > (i_master_drift + 50000) )
660 msg_Dbg( p_stream, "adding frame (%i)",
661 (int)(i_video_drift - i_master_drift) );
663 b_need_duplicate = true;
667 if( unlikely( !id->p_encoder->p_module ) )
669 transcode_video_encoder_init( p_stream, id );
671 transcode_video_filter_init( p_stream, id );
673 if( transcode_video_encoder_open( p_stream, id ) != VLC_SUCCESS )
675 picture_Release( p_pic );
676 transcode_video_close( p_stream, id );
677 id->b_transcode = false;
682 /* Run filter chain */
684 p_pic = filter_chain_VideoFilter( id->p_f_chain, p_pic );
690 /* Check if we have a subpicture to overlay */
693 p_subpic = spu_SortSubpictures( p_sys->p_spu, p_pic->date, false );
694 /* TODO: get another pic */
697 /* Overlay subpicture */
702 if( picture_IsReferenced( p_pic ) && !filter_chain_GetLength( id->p_f_chain ) )
704 /* We can't modify the picture, we need to duplicate it */
705 picture_t *p_tmp = video_new_buffer_decoder( id->p_decoder );
708 picture_Copy( p_tmp, p_pic );
709 picture_Release( p_pic );
714 if( filter_chain_GetLength( id->p_f_chain ) > 0 )
715 fmt = filter_chain_GetFmtOut( id->p_f_chain )->video;
717 fmt = id->p_decoder->fmt_out.video;
719 spu_RenderSubpictures( p_sys->p_spu, p_pic, &fmt,
720 p_subpic, &id->p_decoder->fmt_out.video, p_pic->date );
723 /* Run user specified filter chain */
725 p_pic = filter_chain_VideoFilter( id->p_uf_chain, p_pic );
727 if( p_sys->i_threads == 0 )
731 video_timer_start( id->p_encoder );
732 p_block = id->p_encoder->pf_encode_video( id->p_encoder, p_pic );
733 video_timer_stop( id->p_encoder );
735 block_ChainAppend( out, p_block );
738 if( p_sys->b_master_sync )
740 mtime_t i_pts = date_Get( &id->interpolated_pts ) + 1;
741 if ( p_pic->date - i_pts > MASTER_SYNC_MAX_DRIFT
742 || p_pic->date - i_pts < -MASTER_SYNC_MAX_DRIFT )
744 msg_Dbg( p_stream, "drift is too high, resetting master sync" );
745 date_Set( &id->interpolated_pts, p_pic->date );
746 i_pts = p_pic->date + 1;
748 date_Increment( &id->interpolated_pts, 1 );
750 if( unlikely( b_need_duplicate ) )
753 if( p_sys->i_threads >= 1 )
755 /* We can't modify the picture, we need to duplicate it */
756 p_pic2 = video_new_buffer_decoder( id->p_decoder );
759 picture_Copy( p_pic2, p_pic );
760 p_pic2->date = i_pts;
767 video_timer_start( id->p_encoder );
768 p_block = id->p_encoder->pf_encode_video(id->p_encoder, p_pic);
769 video_timer_stop( id->p_encoder );
770 block_ChainAppend( out, p_block );
775 if( p_sys->i_threads == 0 )
777 picture_Release( p_pic );
781 vlc_mutex_lock( &p_sys->lock_out );
782 p_sys->pp_pics[p_sys->i_last_pic++] = p_pic;
783 p_sys->i_last_pic %= PICTURE_RING_SIZE;
784 *out = p_sys->p_buffers;
785 p_sys->p_buffers = NULL;
788 p_sys->pp_pics[p_sys->i_last_pic++] = p_pic2;
789 p_sys->i_last_pic %= PICTURE_RING_SIZE;
791 vlc_cond_signal( &p_sys->cond );
792 vlc_mutex_unlock( &p_sys->lock_out );
799 bool transcode_video_add( sout_stream_t *p_stream, es_format_t *p_fmt,
800 sout_stream_id_t *id )
802 sout_stream_sys_t *p_sys = p_stream->p_sys;
805 "creating video transcoding from fcc=`%4.4s' to fcc=`%4.4s'",
806 (char*)&p_fmt->i_codec, (char*)&p_sys->i_vcodec );
808 /* Complete destination format */
809 id->p_encoder->fmt_out.i_codec = p_sys->i_vcodec;
810 id->p_encoder->fmt_out.video.i_width = p_sys->i_width & ~1;
811 id->p_encoder->fmt_out.video.i_height = p_sys->i_height & ~1;
812 id->p_encoder->fmt_out.i_bitrate = p_sys->i_vbitrate;
814 /* Build decoder -> filter -> encoder chain */
815 if( transcode_video_new( p_stream, id ) )
817 msg_Err( p_stream, "cannot create video chain" );
821 /* Stream will be added later on because we don't know
822 * all the characteristics of the decoded stream yet */
823 id->b_transcode = true;
825 if( p_sys->f_fps > 0 )
827 id->p_encoder->fmt_out.video.i_frame_rate = (p_sys->f_fps * 1000) + 0.5;
828 id->p_encoder->fmt_out.video.i_frame_rate_base = ENC_FRAMERATE_BASE;