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/*
* RSound audio output driver
*
* Copyright (C) 2011 Hans-Kristian Arntzen
*
* This file is part of mplayer2.
*
* mplayer2 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.
*
* mplayer2 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 mplayer2; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <rsound.h>
#include "talloc.h"
#include "core/subopt-helper.h"
#include "osdep/timer.h"
#include "audio/format.h"
#include "ao.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_S8:
rsd_format = RSD_S8;
break;
case AF_FORMAT_S16_LE:
rsd_format = RSD_S16_LE;
break;
case AF_FORMAT_S16_BE:
rsd_format = RSD_S16_BE;
break;
case AF_FORMAT_U16_LE:
rsd_format = RSD_U16_LE;
break;
case AF_FORMAT_U16_BE:
rsd_format = RSD_U16_BE;
break;
case AF_FORMAT_S24_LE:
case AF_FORMAT_S24_BE:
case AF_FORMAT_U24_LE:
case AF_FORMAT_U24_BE:
rsd_format = RSD_S32_LE;
ao->format = AF_FORMAT_S32_LE;
break;
case AF_FORMAT_S32_LE:
rsd_format = RSD_S32_LE;
break;
case AF_FORMAT_S32_BE:
rsd_format = RSD_S32_BE;
break;
case AF_FORMAT_U32_LE:
rsd_format = RSD_U32_LE;
break;
case AF_FORMAT_U32_BE:
rsd_format = RSD_U32_BE;
break;
default:
rsd_format = RSD_S16_LE;
ao->format = AF_FORMAT_S16_LE;
}
return rsd_format;
}
static int init(struct ao *ao, char *params)
{
struct priv *priv = talloc_zero(ao, struct priv);
ao->priv = priv;
char *host = NULL;
char *port = NULL;
const opt_t subopts[] = {
{"host", OPT_ARG_MSTRZ, &host, NULL},
{"port", OPT_ARG_MSTRZ, &port, NULL},
{NULL}
};
if (subopt_parse(params, subopts) != 0)
return -1;
if (rsd_init(&priv->rd) < 0) {
free(host);
free(port);
return -1;
}
if (host) {
rsd_set_param(priv->rd, RSD_HOST, host);
free(host);
}
if (port) {
rsd_set_param(priv->rd, RSD_PORT, port);
free(port);
}
// 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, &ao->samplerate);
rsd_set_param(priv->rd, RSD_CHANNELS, &ao->channels.num);
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;
}
ao->bps = ao->channels.num * ao->samplerate * af_fmt2bits(ao->format) / 8;
return 0;
}
static void uninit(struct ao *ao, bool cut_audio)
{
struct priv *priv = ao->priv;
/* The API does not provide a direct way to explicitly wait until
* the last byte has been played server-side as this cannot be
* guaranteed by backend drivers, so we approximate this behavior.
*/
if (!cut_audio)
mp_sleep_us(rsd_delay_ms(priv->rd) * 1000);
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);
}
static int play(struct ao *ao, void *data, int len, int flags)
{
struct priv *priv = ao->priv;
return rsd_write(priv->rd, data, len);
}
static float get_delay(struct ao *ao)
{
struct priv *priv = ao->priv;
return rsd_delay_ms(priv->rd) / 1000.0;
}
const struct ao_driver audio_out_rsound = {
.info = &(const struct ao_info) {
.name = "RSound output driver",
.short_name = "rsound",
.author = "Hans-Kristian Arntzen",
.comment = "",
},
.init = init,
.uninit = uninit,
.reset = reset,
.get_space = get_space,
.play = play,
.get_delay = get_delay,
.pause = audio_pause,
.resume = audio_resume,
};
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