mirror of https://github.com/mpv-player/mpv
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/*
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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 <assert.h>
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#include "core/mp_talloc.h"
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#include "audio.h"
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void mp_audio_set_format(struct mp_audio *mpa, int format)
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{
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mpa->format = format;
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mpa->bps = af_fmt2bits(format) / 8;
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}
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void mp_audio_set_num_channels(struct mp_audio *mpa, int num_channels)
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{
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struct mp_chmap map;
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mp_chmap_from_channels(&map, num_channels);
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mp_audio_set_channels(mpa, &map);
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}
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// Use old MPlayer/ALSA channel layout.
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void mp_audio_set_channels_old(struct mp_audio *mpa, int num_channels)
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{
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struct mp_chmap map;
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mp_chmap_from_channels_alsa(&map, num_channels);
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mp_audio_set_channels(mpa, &map);
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}
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void mp_audio_set_channels(struct mp_audio *mpa, const struct mp_chmap *chmap)
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{
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assert(mp_chmap_is_empty(chmap) || mp_chmap_is_valid(chmap));
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mpa->channels = *chmap;
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mpa->nch = mpa->channels.num;
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}
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void mp_audio_copy_config(struct mp_audio *dst, const struct mp_audio *src)
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{
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mp_audio_set_format(dst, src->format);
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mp_audio_set_channels(dst, &src->channels);
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dst->rate = src->rate;
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}
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bool mp_audio_config_equals(const struct mp_audio *a, const struct mp_audio *b)
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{
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return a->format == b->format && a->rate == b->rate &&
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mp_chmap_equals(&a->channels, &b->channels);
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}
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char *mp_audio_fmt_to_str(int srate, const struct mp_chmap *chmap, int format)
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{
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char *chstr = mp_chmap_to_str(chmap);
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char *res = talloc_asprintf(NULL, "%dHz %s %dch %s", srate, chstr,
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chmap->num, af_fmt2str_short(format));
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talloc_free(chstr);
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return res;
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}
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char *mp_audio_config_to_str(struct mp_audio *mpa)
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{
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return mp_audio_fmt_to_str(mpa->rate, &mpa->channels, mpa->format);
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}
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