1 /*****************************************************************************
2 * aout_dummy.c : dummy audio output plugin
3 *****************************************************************************
4 * Copyright (C) 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
25 *****************************************************************************/
29 #include "common.h" /* boolean_t, byte_t */
34 #include "audio_output.h" /* aout_thread_t */
38 /*****************************************************************************
39 * vout_dummy_t: dummy video output method descriptor
40 *****************************************************************************
41 * This structure is part of the video output thread descriptor.
42 * It describes the dummy specific properties of an output thread.
43 *****************************************************************************/
44 typedef struct aout_sys_s
50 /*****************************************************************************
51 * aout_SysOpen: opens a dummy audio device
52 *****************************************************************************/
53 int aout_SysOpen( aout_thread_t *p_aout )
55 /* Initialize some variables */
56 p_aout->i_format = AOUT_DEFAULT_FORMAT;
57 p_aout->i_channels = 1 + main_GetIntVariable( AOUT_STEREO_VAR, AOUT_STEREO_DEFAULT );
58 p_aout->l_rate = main_GetIntVariable( AOUT_RATE_VAR, AOUT_RATE_DEFAULT );
63 /*****************************************************************************
64 * aout_SysReset: fake reset
65 *****************************************************************************/
66 int aout_SysReset( aout_thread_t *p_aout )
71 /*****************************************************************************
72 * aout_SysSetFormat: pretends to set the dsp output format
73 *****************************************************************************/
74 int aout_SysSetFormat( aout_thread_t *p_aout )
79 /*****************************************************************************
80 * aout_SysSetChannels: pretends to set stereo or mono mode
81 *****************************************************************************/
82 int aout_SysSetChannels( aout_thread_t *p_aout )
87 /*****************************************************************************
88 * aout_SysSetRate: pretends to set audio output rate
89 *****************************************************************************/
90 int aout_SysSetRate( aout_thread_t *p_aout )
95 /*****************************************************************************
96 * aout_SysGetBufInfo: returns available bytes in buffer
97 *****************************************************************************/
98 long aout_SysGetBufInfo( aout_thread_t *p_aout, long l_buffer_limit )
100 return( 2 * l_buffer_limit ); /* value big enough to sleep */
103 /*****************************************************************************
104 * aout_SysPlaySamples: pretends to play a sound
105 *****************************************************************************/
106 void aout_SysPlaySamples( aout_thread_t *p_aout, byte_t *buffer, int i_size )
111 /*****************************************************************************
112 * aout_SysClose: closes the dummy audio device
113 *****************************************************************************/
114 void aout_SysClose( aout_thread_t *p_aout )