mirror of
https://github.com/mpv-player/mpv
synced 2024-12-19 05:15:12 +00:00
04df16bfd3
All authors have agreed.
One exception is 71247a97b3, whose author was not asked, but we deem
the change as trivial. (And technically it was replaced when the audio
chain dropped non-native endian sample formats.)
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
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along 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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