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/*
* Copyright 2006 Johannes Weißl
*
* This program 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 of the
* License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "op.h"
#include "xmalloc.h"
#include "utils.h"
#include "misc.h"
/*
* <ao/ao.h> uses FILE but doesn't include stdio.h.
* Also we use snprintf().
*/
#include <stdio.h>
#include <ao/ao.h>
static ao_device *libao_device;
static char *wav_dir = NULL;
static int wav_counter = 1;
static int is_wav = 0;
/* configuration */
static char *libao_driver = NULL;
static int libao_buffer_space = 8192;
static int op_ao_init(void)
{
/* ignore config value */
wav_counter = 1;
ao_initialize();
return 0;
}
static int op_ao_exit(void)
{
free(libao_driver);
ao_shutdown();
return 0;
}
static int op_ao_open(sample_format_t sf)
{
ao_sample_format format;
int driver;
if (libao_driver == NULL) {
driver = ao_default_driver_id();
} else {
driver = ao_driver_id(libao_driver);
is_wav = strcasecmp(libao_driver, "wav") == 0;
}
if (driver == -1) {
errno = ENODEV;
return -OP_ERROR_ERRNO;
}
format.bits = sf_get_bits(sf);
format.rate = sf_get_rate(sf);
format.channels = sf_get_channels(sf);
format.byte_format = sf_get_bigendian(sf) ? AO_FMT_BIG : AO_FMT_LITTLE;
if (is_wav) {
char file[512];
if (wav_dir == NULL)
wav_dir = xstrdup(home_dir);
snprintf(file, sizeof(file), "%s/%02d.wav", wav_dir, wav_counter);
libao_device = ao_open_file(driver, file, 0, &format, NULL);
} else {
libao_device = ao_open_live(driver, &format, NULL);
}
if (libao_device == NULL) {
switch (errno) {
case AO_ENODRIVER:
case AO_ENOTFILE:
case AO_ENOTLIVE:
case AO_EOPENDEVICE:
errno = ENODEV;
return -OP_ERROR_ERRNO;
case AO_EBADOPTION:
errno = EINVAL;
return -OP_ERROR_ERRNO;
case AO_EOPENFILE:
errno = EACCES;
return -OP_ERROR_ERRNO;
case AO_EFILEEXISTS:
errno = EEXIST;
return -OP_ERROR_ERRNO;
case AO_EFAIL:
default:
return -OP_ERROR_INTERNAL;
}
}
return 0;
}
static int op_ao_close(void)
{
ao_close(libao_device);
if (is_wav)
wav_counter++;
return 0;
}
static int op_ao_write(const char *buffer, int count)
{
if (ao_play(libao_device, (void *)buffer, count) == 0)
return -1;
return count;
}
static int op_ao_buffer_space(void)
{
if (is_wav)
return 128 * 1024;
return libao_buffer_space;
}
static int op_ao_set_option(int key, const char *val)
{
long int ival;
switch (key) {
case 0:
if (str_to_int(val, &ival) || ival < 4096) {
errno = EINVAL;
return -OP_ERROR_ERRNO;
}
libao_buffer_space = ival;
break;
case 1:
free(libao_driver);
libao_driver = NULL;
if (val[0])
libao_driver = xstrdup(val);
break;
case 2:
if (str_to_int(val, &ival)) {
errno = EINVAL;
return -OP_ERROR_ERRNO;
}
wav_counter = ival;
break;
case 3:
free(wav_dir);
wav_dir = xstrdup(val);
break;
default:
return -OP_ERROR_NOT_OPTION;
}
return 0;
}
static int op_ao_get_option(int key, char **val)
{
switch (key) {
case 0:
*val = xnew(char, 22);
snprintf(*val, 22, "%d", libao_buffer_space);
break;
case 1:
if (libao_driver)
*val = xstrdup(libao_driver);
break;
case 2:
*val = xnew(char, 22);
snprintf(*val, 22, "%d", wav_counter);
break;
case 3:
if (wav_dir == NULL)
wav_dir = xstrdup(home_dir);
*val = xstrdup(wav_dir);
break;
default:
return -OP_ERROR_NOT_OPTION;
}
return 0;
}
const struct output_plugin_ops op_pcm_ops = {
.init = op_ao_init,
.exit = op_ao_exit,
.open = op_ao_open,
.close = op_ao_close,
.write = op_ao_write,
.buffer_space = op_ao_buffer_space,
.set_option = op_ao_set_option,
.get_option = op_ao_get_option
};
const char * const op_pcm_options[] = {
"buffer_size",
"driver",
"wav_counter",
"wav_dir",
NULL
};
const int op_priority = 3;
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