mirror of https://github.com/mpv-player/mpv
210 lines
4.8 KiB
C
210 lines
4.8 KiB
C
/*
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* RSound audio output driver
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*
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* Copyright (C) 2011 Hans-Kristian Arntzen
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*
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* This file is part of mplayer2.
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*
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* mplayer2 is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mplayer2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mplayer2; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <rsound.h>
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#include "talloc.h"
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#include "core/subopt-helper.h"
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#include "osdep/timer.h"
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#include "audio/format.h"
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#include "ao.h"
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struct priv {
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rsound_t *rd;
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};
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static int set_format(struct ao *ao)
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{
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int rsd_format;
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switch (ao->format) {
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case AF_FORMAT_U8:
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rsd_format = RSD_U8;
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break;
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case AF_FORMAT_S8:
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rsd_format = RSD_S8;
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break;
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case AF_FORMAT_S16_LE:
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rsd_format = RSD_S16_LE;
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break;
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case AF_FORMAT_S16_BE:
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rsd_format = RSD_S16_BE;
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break;
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case AF_FORMAT_U16_LE:
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rsd_format = RSD_U16_LE;
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break;
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case AF_FORMAT_U16_BE:
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rsd_format = RSD_U16_BE;
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break;
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case AF_FORMAT_S24_LE:
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case AF_FORMAT_S24_BE:
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case AF_FORMAT_U24_LE:
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case AF_FORMAT_U24_BE:
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rsd_format = RSD_S32_LE;
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ao->format = AF_FORMAT_S32_LE;
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break;
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case AF_FORMAT_S32_LE:
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rsd_format = RSD_S32_LE;
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break;
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case AF_FORMAT_S32_BE:
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rsd_format = RSD_S32_BE;
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break;
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case AF_FORMAT_U32_LE:
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rsd_format = RSD_U32_LE;
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break;
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case AF_FORMAT_U32_BE:
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rsd_format = RSD_U32_BE;
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break;
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default:
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rsd_format = RSD_S16_LE;
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ao->format = AF_FORMAT_S16_LE;
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}
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return rsd_format;
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}
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static int init(struct ao *ao, char *params)
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{
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struct priv *priv = talloc_zero(ao, struct priv);
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ao->priv = priv;
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char *host = NULL;
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char *port = NULL;
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const opt_t subopts[] = {
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{"host", OPT_ARG_MSTRZ, &host, NULL},
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{"port", OPT_ARG_MSTRZ, &port, NULL},
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{NULL}
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};
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if (subopt_parse(params, subopts) != 0)
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return -1;
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if (rsd_init(&priv->rd) < 0) {
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free(host);
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free(port);
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return -1;
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}
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if (host) {
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rsd_set_param(priv->rd, RSD_HOST, host);
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free(host);
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}
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if (port) {
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rsd_set_param(priv->rd, RSD_PORT, port);
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free(port);
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}
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mp_chmap_reorder_to_alsa(&ao->channels);
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rsd_set_param(priv->rd, RSD_SAMPLERATE, &ao->samplerate);
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rsd_set_param(priv->rd, RSD_CHANNELS, &ao->channels.num);
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int rsd_format = set_format(ao);
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rsd_set_param(priv->rd, RSD_FORMAT, &rsd_format);
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if (rsd_start(priv->rd) < 0) {
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rsd_free(priv->rd);
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return -1;
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}
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ao->bps = ao->channels.num * ao->samplerate * af_fmt2bits(ao->format) / 8;
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return 0;
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}
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static void uninit(struct ao *ao, bool cut_audio)
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{
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struct priv *priv = ao->priv;
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/* The API does not provide a direct way to explicitly wait until
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* the last byte has been played server-side as this cannot be
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* guaranteed by backend drivers, so we approximate this behavior.
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*/
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if (!cut_audio)
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usec_sleep(rsd_delay_ms(priv->rd) * 1000);
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rsd_stop(priv->rd);
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rsd_free(priv->rd);
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}
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static void reset(struct ao *ao)
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{
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struct priv *priv = ao->priv;
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rsd_stop(priv->rd);
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rsd_start(priv->rd);
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}
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static void audio_pause(struct ao *ao)
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{
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struct priv *priv = ao->priv;
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rsd_pause(priv->rd, 1);
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}
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static void audio_resume(struct ao *ao)
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{
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struct priv *priv = ao->priv;
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rsd_pause(priv->rd, 0);
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}
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static int get_space(struct ao *ao)
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{
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struct priv *priv = ao->priv;
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return rsd_get_avail(priv->rd);
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}
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static int play(struct ao *ao, void *data, int len, int flags)
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{
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struct priv *priv = ao->priv;
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return rsd_write(priv->rd, data, len);
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}
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static float get_delay(struct ao *ao)
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{
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struct priv *priv = ao->priv;
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return rsd_delay_ms(priv->rd) / 1000.0;
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}
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const struct ao_driver audio_out_rsound = {
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.info = &(const struct ao_info) {
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.name = "RSound output driver",
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.short_name = "rsound",
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.author = "Hans-Kristian Arntzen",
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.comment = "",
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},
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.init = init,
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.uninit = uninit,
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.reset = reset,
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.get_space = get_space,
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.play = play,
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.get_delay = get_delay,
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.pause = audio_pause,
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.resume = audio_resume,
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};
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