1 /*****************************************************************************
2 * decoder.c: Functions for the management of decoders
3 *****************************************************************************
4 * Copyright (C) 1999-2004 VideoLAN
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
8 * Gildas Bazin <gbazin@netcourrier.com>
9 * Laurent Aimar <fenrir@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
32 #include <vlc/decoder.h>
34 #include <vlc/input.h>
36 #include "stream_output.h"
37 #include "input_internal.h"
39 static decoder_t * CreateDecoder( input_thread_t *, es_format_t *, int );
40 static void DeleteDecoder( decoder_t * );
42 static int DecoderThread( decoder_t * );
43 static int DecoderDecode( decoder_t * p_dec, block_t *p_block );
45 /* Buffers allocation callbacks for the decoders */
46 static aout_buffer_t *aout_new_buffer( decoder_t *, int );
47 static void aout_del_buffer( decoder_t *, aout_buffer_t * );
49 static picture_t *vout_new_buffer( decoder_t * );
50 static void vout_del_buffer( decoder_t *, picture_t * );
51 static void vout_link_picture( decoder_t *, picture_t * );
52 static void vout_unlink_picture( decoder_t *, picture_t * );
54 static es_format_t null_es_format = {0};
56 struct decoder_owner_sys_t
58 vlc_bool_t b_own_thread;
60 input_thread_t *p_input;
62 aout_instance_t *p_aout;
63 aout_input_t *p_aout_input;
65 vout_thread_t *p_vout;
67 sout_instance_t *p_sout;
68 sout_packetizer_input_t *p_sout_input;
70 /* Some decoders require already packetized data (ie. not truncated) */
71 decoder_t *p_packetizer;
73 /* Current format in use by the output */
84 * Spawns a new decoder thread
86 * \param p_input the input thread
87 * \param p_es the es descriptor
88 * \return the spawned decoder object
90 decoder_t *input_DecoderNew( input_thread_t *p_input,
91 es_format_t *fmt, vlc_bool_t b_force_decoder )
93 decoder_t *p_dec = NULL;
96 /* If we are in sout mode, search for packetizer module */
97 if( p_input->p_sout && !b_force_decoder )
99 /* Create the decoder configuration structure */
100 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_PACKETIZER );
103 msg_Err( p_input, "could not create packetizer" );
109 /* Create the decoder configuration structure */
110 p_dec = CreateDecoder( p_input, fmt, VLC_OBJECT_DECODER );
113 msg_Err( p_input, "could not create decoder" );
118 if( !p_dec->p_module )
120 msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
121 "VLC probably does not support this sound or video format.",
122 (char*)&p_dec->fmt_in.i_codec );
124 DeleteDecoder( p_dec );
125 vlc_object_destroy( p_dec );
129 if( p_input->p_sout && p_input->input.b_can_pace_control &&
132 msg_Dbg( p_input, "stream out mode -> no decoder thread" );
133 p_dec->p_owner->b_own_thread = VLC_FALSE;
137 var_Get( p_input, "minimize-threads", &val );
138 p_dec->p_owner->b_own_thread = !val.b_bool;
141 if( p_dec->p_owner->b_own_thread )
144 if( fmt->i_cat == AUDIO_ES )
145 i_priority = VLC_THREAD_PRIORITY_AUDIO;
147 i_priority = VLC_THREAD_PRIORITY_VIDEO;
149 /* Spawn the decoder thread */
150 if( vlc_thread_create( p_dec, "decoder", DecoderThread,
151 i_priority, VLC_FALSE ) )
153 msg_Err( p_dec, "cannot spawn decoder thread \"%s\"",
154 p_dec->p_module->psz_object_name );
155 module_Unneed( p_dec, p_dec->p_module );
156 DeleteDecoder( p_dec );
157 vlc_object_destroy( p_dec );
166 * Kills a decoder thread and waits until it's finished
168 * \param p_input the input thread
169 * \param p_es the es descriptor
172 void input_DecoderDelete( decoder_t *p_dec )
174 p_dec->b_die = VLC_TRUE;
176 if( p_dec->p_owner->b_own_thread )
178 /* Make sure the thread leaves the function by
179 * sending it an empty block. */
180 block_t *p_block = block_New( p_dec, 0 );
181 input_DecoderDecode( p_dec, p_block );
183 vlc_thread_join( p_dec );
185 /* Don't module_Unneed() here because of the dll loader that wants
186 * close() in the same thread than open()/decode() */
190 module_Unneed( p_dec, p_dec->p_module );
193 /* Delete decoder configuration */
194 DeleteDecoder( p_dec );
196 /* Delete the decoder */
197 vlc_object_destroy( p_dec );
201 * Put a block_t in the decoder's fifo.
203 * \param p_dec the decoder object
204 * \param p_block the data block
206 void input_DecoderDecode( decoder_t * p_dec, block_t *p_block )
208 if( p_dec->p_owner->b_own_thread )
210 if( p_dec->p_owner->p_input->b_out_pace_control )
213 while( !p_dec->b_die && !p_dec->b_error &&
214 p_dec->p_owner->p_fifo->i_depth > 10 )
219 else if( p_dec->p_owner->p_fifo->i_size > 50000000 /* 50 MB */ )
221 /* FIXME: ideally we would check the time amount of data
222 * in the fifo instead of its size. */
223 msg_Warn( p_dec, "decoder/packetizer fifo full (data not "
224 "consummed quickly enough), resetting fifo!" );
225 block_FifoEmpty( p_dec->p_owner->p_fifo );
228 block_FifoPut( p_dec->p_owner->p_fifo, p_block );
232 if( p_dec->b_error || p_block->i_buffer <= 0 )
234 block_Release( p_block );
238 DecoderDecode( p_dec, p_block );
243 void input_DecoderDiscontinuity( decoder_t * p_dec )
248 if( p_dec->p_owner->b_own_thread )
250 block_FifoEmpty( p_dec->p_owner->p_fifo );
253 /* Send a special block */
254 p_null = block_New( p_dec, 128 );
255 p_null->i_flags |= BLOCK_FLAG_DISCONTINUITY;
256 memset( p_null->p_buffer, 0, p_null->i_buffer );
258 input_DecoderDecode( p_dec, p_null );
261 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec )
263 if( p_dec->p_owner->b_own_thread && p_dec->p_owner->p_fifo->i_depth > 0 )
272 * Create a NULL packet for padding in case of a data loss
274 * \param p_input the input thread
275 * \param p_es es descriptor
278 static void input_NullPacket( input_thread_t * p_input,
279 es_descriptor_t * p_es )
282 block_t *p_block = block_New( p_input, PADDING_PACKET_SIZE );
285 memset( p_block->p_buffer, 0, PADDING_PACKET_SIZE );
286 p_block->i_flags |= BLOCK_FLAG_DISCONTINUITY;
288 block_FifoPut( p_es->p_dec->p_owner->p_fifo, p_block );
294 * Send a NULL packet to the decoders
296 * \param p_input the input thread
299 void input_EscapeDiscontinuity( input_thread_t * p_input )
302 unsigned int i_es, i;
304 for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
306 es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
308 if( p_es->p_dec != NULL )
310 for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
312 input_NullPacket( p_input, p_es );
320 * Send a NULL packet to the audio decoders
322 * \param p_input the input thread
325 void input_EscapeAudioDiscontinuity( input_thread_t * p_input )
328 unsigned int i_es, i;
330 for( i_es = 0; i_es < p_input->stream.i_selected_es_number; i_es++ )
332 es_descriptor_t * p_es = p_input->stream.pp_selected_es[i_es];
334 if( p_es->p_dec != NULL && p_es->i_cat == AUDIO_ES )
336 for( i = 0; i < PADDING_PACKET_NUMBER; i++ )
338 input_NullPacket( p_input, p_es );
347 * Create a decoder object
349 * \param p_input the input thread
350 * \param p_es the es descriptor
351 * \param i_object_type Object type as define in include/vlc_objects.h
352 * \return the decoder object
354 static decoder_t * CreateDecoder( input_thread_t *p_input,
355 es_format_t *fmt, int i_object_type )
359 p_dec = vlc_object_create( p_input, i_object_type );
362 msg_Err( p_input, "out of memory" );
366 p_dec->pf_decode_audio = 0;
367 p_dec->pf_decode_video = 0;
368 p_dec->pf_decode_sub = 0;
369 p_dec->pf_packetize = 0;
371 /* Initialize the decoder fifo */
372 p_dec->p_module = NULL;
375 es_format_Copy( &p_dec->fmt_in, fmt );
376 es_format_Copy( &p_dec->fmt_out, &null_es_format );
378 /* Allocate our private structure for the decoder */
379 p_dec->p_owner = malloc( sizeof( decoder_owner_sys_t ) );
380 if( p_dec->p_owner == NULL )
382 msg_Err( p_dec, "out of memory" );
385 p_dec->p_owner->b_own_thread = VLC_TRUE;
386 p_dec->p_owner->p_input = p_input;
387 p_dec->p_owner->p_aout = NULL;
388 p_dec->p_owner->p_aout_input = NULL;
389 p_dec->p_owner->p_vout = NULL;
390 p_dec->p_owner->p_sout = p_input->p_sout;
391 p_dec->p_owner->p_sout_input = NULL;
392 p_dec->p_owner->p_packetizer = NULL;
396 if( ( p_dec->p_owner->p_fifo = block_FifoNew( p_dec ) ) == NULL )
398 msg_Err( p_dec, "out of memory" );
401 /* Set buffers allocation callbacks for the decoders */
402 p_dec->pf_aout_buffer_new = aout_new_buffer;
403 p_dec->pf_aout_buffer_del = aout_del_buffer;
404 p_dec->pf_vout_buffer_new = vout_new_buffer;
405 p_dec->pf_vout_buffer_del = vout_del_buffer;
406 p_dec->pf_picture_link = vout_link_picture;
407 p_dec->pf_picture_unlink = vout_unlink_picture;
409 vlc_object_attach( p_dec, p_input );
411 /* Find a suitable decoder/packetizer module */
412 if( i_object_type == VLC_OBJECT_DECODER )
413 p_dec->p_module = module_Need( p_dec, "decoder", "$codec", 0 );
415 p_dec->p_module = module_Need( p_dec, "packetizer", "$packetizer", 0 );
417 /* Check if decoder requires already packetized data */
418 if( i_object_type == VLC_OBJECT_DECODER &&
419 p_dec->b_need_packetized && !p_dec->fmt_in.b_packetized )
421 p_dec->p_owner->p_packetizer =
422 vlc_object_create( p_input, VLC_OBJECT_PACKETIZER );
423 if( p_dec->p_owner->p_packetizer )
425 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_in,
428 es_format_Copy( &p_dec->p_owner->p_packetizer->fmt_out,
431 vlc_object_attach( p_dec->p_owner->p_packetizer, p_input );
433 p_dec->p_owner->p_packetizer->p_module =
434 module_Need( p_dec->p_owner->p_packetizer,
435 "packetizer", "$packetizer", 0 );
437 if( !p_dec->p_owner->p_packetizer->p_module )
439 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
440 vlc_object_detach( p_dec->p_owner->p_packetizer );
441 vlc_object_destroy( p_dec->p_owner->p_packetizer );
450 * The decoding main loop
452 * \param p_dec the decoder
455 static int DecoderThread( decoder_t * p_dec )
459 /* The decoder's main loop */
460 while( !p_dec->b_die && !p_dec->b_error )
462 if( ( p_block = block_FifoGet( p_dec->p_owner->p_fifo ) ) == NULL )
467 if( DecoderDecode( p_dec, p_block ) != VLC_SUCCESS )
473 while( !p_dec->b_die )
475 /* Trash all received PES packets */
476 p_block = block_FifoGet( p_dec->p_owner->p_fifo );
477 if( p_block ) block_Release( p_block );
480 /* We do it here because of the dll loader that wants close() in the
481 * same thread than open()/decode() */
482 module_Unneed( p_dec, p_dec->p_module );
490 * \param p_dec the decoder object
491 * \param p_block the block to decode
492 * \return VLC_SUCCESS or an error code
494 static int DecoderDecode( decoder_t *p_dec, block_t *p_block )
496 if( p_block->i_buffer <= 0 )
498 block_Release( p_block );
502 if( p_dec->i_object_type == VLC_OBJECT_PACKETIZER )
504 block_t *p_sout_block;
506 while( (p_sout_block = p_dec->pf_packetize( p_dec, &p_block )) )
508 if( !p_dec->p_owner->p_sout_input )
510 es_format_Copy( &p_dec->p_owner->sout, &p_dec->fmt_out );
512 p_dec->p_owner->sout.i_group =p_dec->fmt_in.i_group;
513 p_dec->p_owner->sout.i_id = p_dec->fmt_in.i_id;
514 if( p_dec->fmt_in.psz_language )
516 p_dec->p_owner->sout.psz_language =
517 strdup( p_dec->fmt_in.psz_language );
520 p_dec->p_owner->p_sout_input =
521 sout_InputNew( p_dec->p_owner->p_sout,
522 &p_dec->p_owner->sout );
524 if( p_dec->p_owner->p_sout_input == NULL )
526 msg_Err( p_dec, "cannot create packetizer output" );
527 p_dec->b_error = VLC_TRUE;
529 while( p_sout_block )
531 block_t *p_next = p_sout_block->p_next;
532 block_Release( p_sout_block );
533 p_sout_block = p_next;
539 while( p_sout_block )
541 block_t *p_next = p_sout_block->p_next;
543 p_sout_block->p_next = NULL;
545 sout_InputSendBuffer( p_dec->p_owner->p_sout_input,
548 p_sout_block = p_next;
551 /* For now it's enough, as only sout inpact on this flag */
552 if( p_dec->p_owner->p_sout->i_out_pace_nocontrol > 0 &&
553 p_dec->p_owner->p_input->b_out_pace_control )
555 msg_Dbg( p_dec, "switching to synch mode" );
556 p_dec->p_owner->p_input->b_out_pace_control = VLC_FALSE;
558 else if( p_dec->p_owner->p_sout->i_out_pace_nocontrol <= 0 &&
559 !p_dec->p_owner->p_input->b_out_pace_control )
561 msg_Dbg( p_dec, "switching to asynch mode" );
562 p_dec->p_owner->p_input->b_out_pace_control = VLC_TRUE;
566 else if( p_dec->fmt_in.i_cat == AUDIO_ES )
568 aout_buffer_t *p_aout_buf;
570 if( p_dec->p_owner->p_packetizer )
572 block_t *p_packetized_block;
573 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
575 while( (p_packetized_block =
576 p_packetizer->pf_packetize( p_packetizer, &p_block )) )
579 p_dec->pf_decode_audio( p_dec, &p_packetized_block )) )
581 aout_DecPlay( p_dec->p_owner->p_aout,
582 p_dec->p_owner->p_aout_input, p_aout_buf );
586 else while( (p_aout_buf = p_dec->pf_decode_audio( p_dec, &p_block )) )
588 aout_DecPlay( p_dec->p_owner->p_aout,
589 p_dec->p_owner->p_aout_input, p_aout_buf );
592 else if( p_dec->fmt_in.i_cat == VIDEO_ES )
596 if( p_dec->p_owner->p_packetizer )
598 block_t *p_packetized_block;
599 decoder_t *p_packetizer = p_dec->p_owner->p_packetizer;
601 while( (p_packetized_block =
602 p_packetizer->pf_packetize( p_packetizer, &p_block )) )
605 p_dec->pf_decode_video( p_dec, &p_packetized_block )) )
607 vout_DatePicture( p_dec->p_owner->p_vout, p_pic,
609 vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
613 else while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
615 vout_DatePicture( p_dec->p_owner->p_vout, p_pic, p_pic->date );
616 vout_DisplayPicture( p_dec->p_owner->p_vout, p_pic );
619 else if( p_dec->fmt_in.i_cat == SPU_ES )
621 p_dec->pf_decode_sub( p_dec, &p_block );
625 msg_Err( p_dec, "unknown ES format" );
629 return p_dec->b_error ? VLC_EGENERIC : VLC_SUCCESS;
633 * Destroys a decoder object
635 * \param p_dec the decoder object
638 static void DeleteDecoder( decoder_t * p_dec )
640 vlc_object_detach( p_dec );
642 msg_Dbg( p_dec, "killing decoder fourcc `%4.4s', %d PES in FIFO",
643 (char*)&p_dec->fmt_in.i_codec,
644 p_dec->p_owner->p_fifo->i_depth );
646 /* Free all packets still in the decoder fifo. */
647 block_FifoEmpty( p_dec->p_owner->p_fifo );
648 block_FifoRelease( p_dec->p_owner->p_fifo );
651 if( p_dec->p_owner->p_aout_input )
652 aout_DecDelete( p_dec->p_owner->p_aout, p_dec->p_owner->p_aout_input );
654 if( p_dec->p_owner->p_vout )
658 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
659 /* Hack to make sure all the the pictures are freed by the decoder */
660 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
663 if( p_pic->i_status == RESERVED_PICTURE )
664 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
665 if( p_pic->i_refcount > 0 )
666 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
670 /* We are about to die. Reattach video output to p_vlc. */
671 vout_Request( p_dec, p_dec->p_owner->p_vout, 0, 0, 0, 0 );
674 if( p_dec->p_owner->p_sout_input )
676 sout_InputDelete( p_dec->p_owner->p_sout_input );
677 es_format_Clean( &p_dec->p_owner->sout );
680 es_format_Clean( &p_dec->fmt_in );
681 es_format_Clean( &p_dec->fmt_out );
683 if( p_dec->p_owner->p_packetizer )
685 module_Unneed( p_dec->p_owner->p_packetizer,
686 p_dec->p_owner->p_packetizer->p_module );
687 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_in );
688 es_format_Clean( &p_dec->p_owner->p_packetizer->fmt_out );
689 vlc_object_detach( p_dec->p_owner->p_packetizer );
690 vlc_object_destroy( p_dec->p_owner->p_packetizer );
693 free( p_dec->p_owner );
696 /*****************************************************************************
697 * Buffers allocation callbacks for the decoders
698 *****************************************************************************/
699 static aout_buffer_t *aout_new_buffer( decoder_t *p_dec, int i_samples )
701 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
702 aout_buffer_t *p_buffer;
704 if( p_sys->p_aout_input != NULL &&
705 ( p_dec->fmt_out.audio.i_rate != p_sys->audio.i_rate ||
706 p_dec->fmt_out.audio.i_original_channels !=
707 p_sys->audio.i_original_channels ||
708 p_dec->fmt_out.audio.i_bytes_per_frame !=
709 p_sys->audio.i_bytes_per_frame ) )
711 /* Parameters changed, restart the aout */
712 aout_DecDelete( p_sys->p_aout, p_sys->p_aout_input );
713 p_sys->p_aout_input = NULL;
716 if( p_sys->p_aout_input == NULL )
718 p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
719 p_sys->audio = p_dec->fmt_out.audio;
720 p_sys->p_aout_input =
721 aout_DecNew( p_dec, &p_sys->p_aout, &p_sys->audio );
722 if( p_sys->p_aout_input == NULL )
724 msg_Err( p_dec, "failed to create audio output" );
725 p_dec->b_error = VLC_TRUE;
728 p_dec->fmt_out.audio.i_bytes_per_frame =
729 p_sys->audio.i_bytes_per_frame;
732 p_buffer = aout_DecNewBuffer( p_sys->p_aout, p_sys->p_aout_input,
738 static void aout_del_buffer( decoder_t *p_dec, aout_buffer_t *p_buffer )
740 aout_DecDeleteBuffer( p_dec->p_owner->p_aout,
741 p_dec->p_owner->p_aout_input, p_buffer );
744 static picture_t *vout_new_buffer( decoder_t *p_dec )
746 decoder_owner_sys_t *p_sys = (decoder_owner_sys_t *)p_dec->p_owner;
749 if( p_sys->p_vout == NULL ||
750 p_dec->fmt_out.video.i_width != p_sys->video.i_width ||
751 p_dec->fmt_out.video.i_height != p_sys->video.i_height ||
752 p_dec->fmt_out.video.i_chroma != p_sys->video.i_chroma ||
753 p_dec->fmt_out.video.i_aspect != p_sys->video.i_aspect )
755 if( !p_dec->fmt_out.video.i_width ||
756 !p_dec->fmt_out.video.i_height )
758 /* Can't create a new vout without display size */
762 p_dec->fmt_out.video.i_chroma = p_dec->fmt_out.i_codec;
763 p_sys->video = p_dec->fmt_out.video;
765 p_sys->p_vout = vout_Request( p_dec, p_sys->p_vout,
766 p_sys->video.i_width,
767 p_sys->video.i_height,
768 p_sys->video.i_chroma,
769 p_sys->video.i_aspect );
771 if( p_sys->p_vout == NULL )
773 msg_Err( p_dec, "failed to create video output" );
774 p_dec->b_error = VLC_TRUE;
779 /* Get a new picture */
780 while( !(p_pic = vout_CreatePicture( p_sys->p_vout, 0, 0, 0 ) ) )
782 int i_pic, i_ready_pic = 0;
784 if( p_dec->b_die || p_dec->b_error )
789 #define p_pic p_dec->p_owner->p_vout->render.pp_picture[i_pic]
790 /* Check the decoder doesn't leak pictures */
791 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
794 if( p_pic->i_status == READY_PICTURE )
796 if( i_ready_pic++ > 0 ) break;
800 if( p_pic->i_status != DISPLAYED_PICTURE &&
801 p_pic->i_status != RESERVED_PICTURE &&
802 p_pic->i_status != READY_PICTURE ) break;
804 if( !p_pic->i_refcount && p_pic->i_status != RESERVED_PICTURE )
807 if( i_pic == p_dec->p_owner->p_vout->render.i_pictures )
809 msg_Err( p_dec, "decoder is leaking pictures, resetting the heap" );
811 /* Just free all the pictures */
812 for( i_pic = 0; i_pic < p_dec->p_owner->p_vout->render.i_pictures;
815 if( p_pic->i_status == RESERVED_PICTURE )
816 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
817 if( p_pic->i_refcount > 0 )
818 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );
823 msleep( VOUT_OUTMEM_SLEEP );
829 static void vout_del_buffer( decoder_t *p_dec, picture_t *p_pic )
831 vout_DestroyPicture( p_dec->p_owner->p_vout, p_pic );
834 static void vout_link_picture( decoder_t *p_dec, picture_t *p_pic )
836 vout_LinkPicture( p_dec->p_owner->p_vout, p_pic );
839 static void vout_unlink_picture( decoder_t *p_dec, picture_t *p_pic )
841 vout_UnlinkPicture( p_dec->p_owner->p_vout, p_pic );