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https://code.videolan.org/videolan/vlc
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1c13a98745
* Audio and video should now _always_ be perfectly in sync. * Changes in a52.c (end_date management) must be ported to other codecs, otherwise mixer errors will appear. * Audio output plug-in can now tell whether they can handle a little clock drift (for instance, inserting zeroes after a pause).
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*****************************************************************************
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* spdif.c : dummy mixer for S/PDIF output (1 input only)
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*****************************************************************************
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* Copyright (C) 2002 VideoLAN
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* $Id: spdif.c,v 1.5 2002/08/21 22:41:59 massiot Exp $
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*
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* Authors: Christophe Massiot <massiot@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <errno.h>
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#include <stdlib.h> /* malloc(), free() */
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#include <string.h>
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#include <vlc/vlc.h>
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#include "audio_output.h"
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#include "aout_internal.h"
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int Create ( vlc_object_t * );
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static void DoWork ( aout_instance_t *, aout_buffer_t * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin();
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set_description( _("dummy spdif audio mixer module") );
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set_capability( "audio mixer", 1 );
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set_callbacks( Create, NULL );
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vlc_module_end();
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/*****************************************************************************
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* Create: allocate spdif mixer
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*****************************************************************************/
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static int Create( vlc_object_t *p_this )
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{
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aout_instance_t * p_aout = (aout_instance_t *)p_this;
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if ( !AOUT_FMT_NON_LINEAR(&p_aout->mixer.mixer) )
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{
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return -1;
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}
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p_aout->mixer.pf_do_work = DoWork;
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/* This is a bit kludgy - do not ask for a new buffer, since the one
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* provided by the first input will be good enough. */
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p_aout->mixer.output_alloc.i_alloc_type = AOUT_ALLOC_NONE;
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return 0;
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}
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/*****************************************************************************
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* DoWork: mix a new output buffer - this does nothing, indeed
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*****************************************************************************/
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static void DoWork( aout_instance_t * p_aout, aout_buffer_t * p_buffer )
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{
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aout_input_t * p_input = p_aout->pp_inputs[0];
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aout_FifoPop( p_aout, &p_input->fifo );
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}
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