mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 23:02:37 +00:00
152 lines
3.3 KiB
C
152 lines
3.3 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 mpv.
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*
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* mpv 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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* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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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 "mpv_talloc.h"
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#include "options/m_option.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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#include "internal.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_S32:
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rsd_format = RSD_S32_NE;
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break;
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default:
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rsd_format = RSD_S16_NE;
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ao->format = AF_FORMAT_S16;
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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)
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{
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struct priv *priv = ao->priv;
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if (rsd_init(&priv->rd) < 0)
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return -1;
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// Actual channel layout unknown.
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struct mp_chmap_sel sel = {0};
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mp_chmap_sel_add_waveext_def(&sel);
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if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels)) {
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rsd_free(priv->rd);
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return -1;
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}
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rsd_set_param(priv->rd, RSD_SAMPLERATE, (int[]) { ao->samplerate });
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rsd_set_param(priv->rd, RSD_CHANNELS, (int[]) { ao->channels.num });
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ao->format = af_fmt_from_planar(ao->format);
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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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return 0;
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}
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static void uninit(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_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) / ao->sstride;
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}
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static int play(struct ao *ao, void **data, int samples, 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[0], samples * ao->sstride) / ao->sstride;
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}
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static double 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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#define OPT_BASE_STRUCT struct priv
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const struct ao_driver audio_out_rsound = {
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.description = "RSound output driver",
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.name = "rsound",
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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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.priv_size = sizeof(struct priv),
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};
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