lxdream.org :: lxdream/src/drivers/audio

tree revision 917:2146dd5529fd

filename	src/drivers/audio_pulse.c
changeset	736:a02d1475ccfd
prev	710:f6eaa3bcfa5b
next	1024:c67f2d61ab97
author	nkeynes
date	Fri Nov 07 07:53:31 2008 +0000 (15 years ago)
permissions	-rw-r--r--
last change	Fix "0" being confused with "not defined"

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     1 /**

     2  * $Id$

     3  *

     4  * The pulseaudio sound driver

     5  *

     6  * Copyright (c) 2005 Nathan Keynes.

     7  *

     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.

    12  *

    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.

    17  */

    18 #include <stdio.h>

    19 #include <unistd.h>

    20 #include <pulse/simple.h>

    21 #include "aica/audio.h"

    22 #include "lxdream.h"

    24 static pa_simple *pulse_server = NULL;

    26 gboolean audio_pulse_init( )

    27 {

    28     int rate = DEFAULT_SAMPLE_RATE;

    29     int format = DEFAULT_SAMPLE_FORMAT;

    30     pa_sample_spec ss;

    32     if( pulse_server != NULL ) {

    33         pa_simple_free(pulse_server);

    34     }

    35     ss.rate = rate;

    37     if( format & AUDIO_FMT_16BIT ) {

    38         ss.format = PA_SAMPLE_S16NE;

    39     } else {

    40         ss.format = PA_SAMPLE_U8;

    41     }

    43     if( format & AUDIO_FMT_STEREO ) {

    44         ss.channels = 2;

    45     } else {

    46         ss.channels = 1;

    47     }

    49     pulse_server = pa_simple_new(NULL, APP_NAME, PA_STREAM_PLAYBACK,

    50             NULL, "Audio", &ss, NULL, NULL, NULL);

    51     if( pulse_server == NULL ) {

    52         ERROR( "Unable to open audio output (pulseaudio)" );

    53         return FALSE;

    54     }

    55     return TRUE;

    56 }

    58 gboolean audio_pulse_process_buffer( audio_buffer_t buffer )

    59 {

    60     if( pulse_server != NULL ) {

    61         int error;

    62         pa_simple_write( pulse_server, buffer->data, buffer->length, &error );

    63         return TRUE;

    64     } else {

    65         ERROR( "Pulseaudio not initialized" );

    66         return FALSE;

    67     }

    68 }

    70 gboolean audio_pulse_shutdown()

    71 {

    72     pa_simple_free(pulse_server);

    73     pulse_server = NULL;

    74     return TRUE;

    75 }

    77 struct audio_driver audio_pulse_driver = {

    78         "pulse",

    79         N_("PulseAudio sound server driver"),

    80         DEFAULT_SAMPLE_RATE,

    81         DEFAULT_SAMPLE_FORMAT,

    82         audio_pulse_init,

    83         NULL,

    84         audio_pulse_process_buffer,

    85         NULL,

    86         audio_pulse_shutdown};