1 /*****************************************************************************
2 * dsp.c : OSS /dev/dsp plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000 VideoLAN
7 * Henri Fallon <henri@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
26 #include <sys/types.h>
28 #include <sys/asoundlib.h> /* for alsa :) */
30 #include <stdlib.h> /* malloc(), free() */
31 // #include <unistd.h> /* close() */
34 #include "common.h" /* boolean_t, byte_t */
40 #include "interface.h"
41 #include "audio_output.h"
43 #include "video_output.h"
48 /*****************************************************************************
50 *****************************************************************************/
51 static void aout_GetPlugin( p_aout_thread_t p_aout );
54 int aout_AlsaOpen ( aout_thread_t *p_aout );
55 int aout_AlsaReset ( aout_thread_t *p_aout );
56 int aout_AlsaSetFormat ( aout_thread_t *p_aout );
57 int aout_AlsaSetChannels ( aout_thread_t *p_aout );
58 int aout_AlsaSetRate ( aout_thread_t *p_aout );
59 long aout_AlsaGetBufInfo ( aout_thread_t *p_aout, long l_buffer_info );
60 void aout_AlsaPlaySamples ( aout_thread_t *p_aout, byte_t *buffer,
62 void aout_AlsaClose ( aout_thread_t *p_aout );
64 /*****************************************************************************
65 * GetConfig: get the plugin structure and configuration
66 *****************************************************************************/
67 plugin_info_t * GetConfig( void )
70 plugin_info_t * p_info = (plugin_info_t *) malloc( sizeof(plugin_info_t) );
72 p_info->psz_name = "Alsa plugin";
73 p_info->psz_version = VERSION;
74 p_info->psz_author = "the VideoLAN team <vlc@videolan.org>";
76 p_info->aout_GetPlugin = aout_GetPlugin;
77 p_info->vout_GetPlugin = NULL;
78 p_info->intf_GetPlugin = NULL;
79 p_info->yuv_GetPlugin = NULL;
82 /* TODO : test if alsa is available */
83 p_info->i_score = 0x100;
85 /* If this plugin was requested, score it higher */
86 if( TestMethod( AOUT_METHOD_VAR, "alsa" ) )
88 p_info->i_score += 0x200;
94 /*****************************************************************************
95 * Following functions are only called through the p_info structure
96 *****************************************************************************/
98 static void aout_GetPlugin( p_aout_thread_t p_aout )
100 p_aout->p_sys_open = aout_AlsaOpen;
101 p_aout->p_sys_reset = aout_AlsaReset;
102 p_aout->p_sys_setformat = aout_AlsaSetFormat;
103 p_aout->p_sys_setchannels = aout_AlsaSetChannels;
104 p_aout->p_sys_setrate = aout_AlsaSetRate;
105 p_aout->p_sys_getbufinfo = aout_AlsaGetBufInfo;
106 p_aout->p_sys_playsamples = aout_AlsaPlaySamples;
107 p_aout->p_sys_close = aout_AlsaClose;