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/*
* This file is part of mpv.
*
* mpv 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.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include "mpvcore/mp_talloc.h"
#include "audio.h"
void mp_audio_set_format(struct mp_audio *mpa, int format)
{
mpa->format = format;
mpa->bps = af_fmt2bits(format) / 8;
}
void mp_audio_set_num_channels(struct mp_audio *mpa, int num_channels)
{
struct mp_chmap map;
mp_chmap_from_channels(&map, num_channels);
mp_audio_set_channels(mpa, &map);
}
// Use old MPlayer/ALSA channel layout.
void mp_audio_set_channels_old(struct mp_audio *mpa, int num_channels)
{
struct mp_chmap map;
mp_chmap_from_channels_alsa(&map, num_channels);
mp_audio_set_channels(mpa, &map);
}
void mp_audio_set_channels(struct mp_audio *mpa, const struct mp_chmap *chmap)
{
assert(mp_chmap_is_empty(chmap) || mp_chmap_is_valid(chmap));
mpa->channels = *chmap;
mpa->nch = mpa->channels.num;
}
void mp_audio_copy_config(struct mp_audio *dst, const struct mp_audio *src)
{
mp_audio_set_format(dst, src->format);
mp_audio_set_channels(dst, &src->channels);
dst->rate = src->rate;
}
bool mp_audio_config_equals(const struct mp_audio *a, const struct mp_audio *b)
{
return a->format == b->format && a->rate == b->rate &&
mp_chmap_equals(&a->channels, &b->channels);
}
char *mp_audio_fmt_to_str(int srate, const struct mp_chmap *chmap, int format)
{
char *chstr = mp_chmap_to_str(chmap);
char *res = talloc_asprintf(NULL, "%dHz %s %dch %s", srate, chstr,
chmap->num, af_fmt2str_short(format));
talloc_free(chstr);
return res;
}
char *mp_audio_config_to_str(struct mp_audio *mpa)
{
return mp_audio_fmt_to_str(mpa->rate, &mpa->channels, mpa->format);
}
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