mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
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/***
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This file is part of PulseAudio.
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Copyright 2013 Intel Corporation
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "stream-util.h"
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#include <pulse/def.h>
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#include <pulsecore/core-format.h>
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#include <pulsecore/macro.h>
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int pa_stream_get_volume_channel_map(const pa_cvolume *volume, const pa_channel_map *original_map, const pa_format_info *format,
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pa_channel_map *volume_map) {
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int r;
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pa_channel_map volume_map_local;
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pa_assert(volume);
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pa_assert(format);
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pa_assert(volume_map);
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if (original_map) {
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if (volume->channels == original_map->channels) {
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*volume_map = *original_map;
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return 0;
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}
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if (volume->channels == 1) {
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pa_channel_map_init_mono(volume_map);
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return 0;
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}
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pa_log_info("Invalid stream parameters: the volume is incompatible with the channel map.");
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return -PA_ERR_INVALID;
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}
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r = pa_format_info_get_channel_map(format, &volume_map_local);
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if (r == -PA_ERR_NOENTITY) {
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if (volume->channels == 1) {
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pa_channel_map_init_mono(volume_map);
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return 0;
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}
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pa_log_info("Invalid stream parameters: multi-channel volume is set, but channel map is not.");
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return -PA_ERR_INVALID;
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}
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if (r < 0) {
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pa_log_info("Invalid channel map.");
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return -PA_ERR_INVALID;
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}
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if (volume->channels == volume_map_local.channels) {
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*volume_map = volume_map_local;
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return 0;
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}
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if (volume->channels == 1) {
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pa_channel_map_init_mono(volume_map);
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return 0;
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}
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pa_log_info("Invalid stream parameters: the volume is incompatible with the channel map.");
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return -PA_ERR_INVALID;
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}
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