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/*
* RSound audio output driver
*
* Copyright (C) 2011 Hans-Kristian Arntzen
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <rsound.h>
#include "mpv_talloc.h"
#include "options/m_option.h"
#include "osdep/timer.h"
#include "audio/format.h"
#include "ao.h"
#include "internal.h"
struct priv {
rsound_t *rd;
};
static int set_format(struct ao *ao)
{
int rsd_format;
switch (ao->format) {
case AF_FORMAT_U8:
rsd_format = RSD_U8;
break;
case AF_FORMAT_S32:
rsd_format = RSD_S32_NE;
break;
default:
rsd_format = RSD_S16_NE;
ao->format = AF_FORMAT_S16;
}
return rsd_format;
}
static int init(struct ao *ao)
{
struct priv *priv = ao->priv;
if (rsd_init(&priv->rd) < 0)
return -1;
if (ao->device)
rsd_set_param(priv->rd, RSD_HOST, ao->device);
// Actual channel layout unknown.
struct mp_chmap_sel sel = {0};
mp_chmap_sel_add_waveext_def(&sel);
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels)) {
rsd_free(priv->rd);
return -1;
}
rsd_set_param(priv->rd, RSD_SAMPLERATE, (int[]) { ao->samplerate });
rsd_set_param(priv->rd, RSD_CHANNELS, (int[]) { ao->channels.num });
ao->format = af_fmt_from_planar(ao->format);
int rsd_format = set_format(ao);
rsd_set_param(priv->rd, RSD_FORMAT, &rsd_format);
if (rsd_start(priv->rd) < 0) {
rsd_free(priv->rd);
return -1;
}
return 0;
}
static void uninit(struct ao *ao)
{
struct priv *priv = ao->priv;
rsd_stop(priv->rd);
rsd_free(priv->rd);
}
static void reset(struct ao *ao)
{
struct priv *priv = ao->priv;
rsd_stop(priv->rd);
rsd_start(priv->rd);
}
static void audio_pause(struct ao *ao)
{
struct priv *priv = ao->priv;
rsd_pause(priv->rd, 1);
}
static void audio_resume(struct ao *ao)
{
struct priv *priv = ao->priv;
rsd_pause(priv->rd, 0);
}
static int get_space(struct ao *ao)
{
struct priv *priv = ao->priv;
return rsd_get_avail(priv->rd) / ao->sstride;
}
static int play(struct ao *ao, void **data, int samples, int flags)
{
struct priv *priv = ao->priv;
return rsd_write(priv->rd, data[0], samples * ao->sstride) / ao->sstride;
}
static double get_delay(struct ao *ao)
{
struct priv *priv = ao->priv;
return rsd_delay_ms(priv->rd) / 1000.0;
}
#define OPT_BASE_STRUCT struct priv
const struct ao_driver audio_out_rsound = {
.description = "RSound output driver",
.name = "rsound",
.init = init,
.uninit = uninit,
.reset = reset,
.get_space = get_space,
.play = play,
.get_delay = get_delay,
.pause = audio_pause,
.resume = audio_resume,
.priv_size = sizeof(struct priv),
};
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