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/*
* Copyright (C) 2003-2009 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "mixer_control.h"
#include "mixer_list.h"
#include "filter_registry.h"
#include "pcm_volume.h"
#include "output/pulse_output_plugin.h"
#include "event_pipe.h"
#include <glib.h>
#include <assert.h>
#include <string.h>
#include <unistd.h>
void
pulse_output_context_state_cb(G_GNUC_UNUSED struct pa_context *context,
G_GNUC_UNUSED void *userdata)
{
}
void
event_pipe_emit(G_GNUC_UNUSED enum pipe_event event)
{
}
const struct filter_plugin *
filter_plugin_by_name(G_GNUC_UNUSED const char *name)
{
assert(false);
return NULL;
}
bool
pcm_volume(G_GNUC_UNUSED void *buffer, G_GNUC_UNUSED int length,
G_GNUC_UNUSED const struct audio_format *format,
G_GNUC_UNUSED int volume)
{
assert(false);
return false;
}
int main(int argc, G_GNUC_UNUSED char **argv)
{
GError *error = NULL;
struct mixer *mixer;
bool success;
int volume;
if (argc != 2) {
g_printerr("Usage: read_mixer PLUGIN\n");
return 1;
}
g_thread_init(NULL);
mixer = mixer_new(&alsa_mixer_plugin, NULL, NULL, &error);
if (mixer == NULL) {
g_printerr("mixer_new() failed: %s\n", error->message);
g_error_free(error);
return 2;
}
success = mixer_open(mixer, &error);
if (!success) {
mixer_free(mixer);
g_printerr("failed to open the mixer: %s\n", error->message);
g_error_free(error);
return 2;
}
volume = mixer_get_volume(mixer, &error);
mixer_close(mixer);
mixer_free(mixer);
assert(volume >= -1 && volume <= 100);
if (volume < 0) {
if (error != NULL) {
g_printerr("failed to read volume: %s\n",
error->message);
g_error_free(error);
} else
g_printerr("failed to read volume\n");
return 2;
}
g_print("%d\n", volume);
return 0;
}
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