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/*
*
* ao_raw.c
*
* Copyright (C) Stan Seibert - January 2001, July 2001
*
* This file is part of libao, a cross-platform audio output library. See
* README for a history of this source code.
*
* libao is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* libao is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
********************************************************************
last mod: $Id: ao_raw.c 17718 2010-12-06 20:09:29Z xiphmont $
********************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ao/ao.h>
#include <ao/plugin.h>
static char *ao_raw_options[] = {"byteorder","matrix","verbose","quiet","debug"};
static ao_info ao_raw_info =
{
AO_TYPE_FILE,
"RAW sample output",
"raw",
"Stan Seibert <indigo@aztec.asu.edu>",
"Writes raw audio samples to a file",
AO_FMT_NATIVE,
0,
ao_raw_options,
sizeof(ao_raw_options)/sizeof(*ao_raw_options)
};
typedef struct ao_raw_internal
{
int byte_order;
} ao_raw_internal;
static int ao_raw_test(void)
{
return 1; /* Always works */
}
static ao_info *ao_raw_driver_info(void)
{
return &ao_raw_info;
}
static int ao_raw_device_init(ao_device *device)
{
ao_raw_internal *internal;
internal = (ao_raw_internal *) malloc(sizeof(ao_raw_internal));
if (internal == NULL)
return 0; /* Could not initialize device memory */
internal->byte_order = AO_FMT_NATIVE;
device->internal = internal;
device->output_matrix_order = AO_OUTPUT_MATRIX_FIXED;
return 1; /* Memory alloc successful */
}
static int ao_raw_set_option(ao_device *device, const char *key,
const char *value)
{
ao_raw_internal *internal = (ao_raw_internal *)device->internal;
if (!strcmp(key, "byteorder")) {
if (!strcmp(value, "native"))
internal->byte_order = AO_FMT_NATIVE;
else if (!strcmp(value, "big"))
internal->byte_order = AO_FMT_BIG;
else if (!strcmp(value, "little"))
internal->byte_order = AO_FMT_LITTLE;
else
return 0; /* Bad option value */
}
return 1;
}
static int ao_raw_open(ao_device *device, ao_sample_format *format)
{
ao_raw_internal *internal = (ao_raw_internal *)device->internal;
device->driver_byte_format = internal->byte_order;
//if(!device->inter_matrix){
///* by default, inter == in */
//if(format->matrix)
// device->inter_matrix = strdup(format->matrix);
//}
return 1;
}
/*
* play the sample to the already opened file descriptor
*/
static int ao_raw_play(ao_device *device, const char *output_samples,
uint_32 num_bytes)
{
if (fwrite(output_samples, sizeof(char), num_bytes,
device->file) < num_bytes)
return 0;
else
return 1;
}
static int ao_raw_close(ao_device *device)
{
/* No closeout needed */
return 1;
}
static void ao_raw_device_clear(ao_device *device)
{
ao_raw_internal *internal = (ao_raw_internal *) device->internal;
free(internal);
device->internal=NULL;
}
ao_functions ao_raw = {
ao_raw_test,
ao_raw_driver_info,
ao_raw_device_init,
ao_raw_set_option,
ao_raw_open,
ao_raw_play,
ao_raw_close,
ao_raw_device_clear
};
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