162 lines
3.2 KiB
C++
162 lines
3.2 KiB
C++
/*
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* Copyright (C) 2003-2011 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program 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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* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "MixerControl.hxx"
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#include "MixerList.hxx"
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#include "FilterRegistry.hxx"
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#include "pcm/PcmVolume.hxx"
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#include "GlobalEvents.hxx"
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#include "Main.hxx"
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#include "event/Loop.hxx"
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#include "ConfigData.hxx"
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#include "util/Error.hxx"
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#include <glib.h>
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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EventLoop *main_loop;
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#ifdef HAVE_PULSE
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#include "output/PulseOutputPlugin.hxx"
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void
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pulse_output_lock(gcc_unused PulseOutput *po)
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{
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}
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void
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pulse_output_unlock(gcc_unused PulseOutput *po)
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{
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}
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void
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pulse_output_set_mixer(gcc_unused PulseOutput *po,
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gcc_unused PulseMixer *pm)
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{
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}
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void
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pulse_output_clear_mixer(gcc_unused PulseOutput *po,
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gcc_unused PulseMixer *pm)
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{
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}
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bool
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pulse_output_set_volume(gcc_unused PulseOutput *po,
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gcc_unused const struct pa_cvolume *volume,
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gcc_unused Error &error)
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{
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return false;
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}
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#endif
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#ifdef HAVE_ROAR
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#include "output/RoarOutputPlugin.hxx"
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int
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roar_output_get_volume(gcc_unused RoarOutput *roar)
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{
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return -1;
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}
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bool
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roar_output_set_volume(gcc_unused RoarOutput *roar,
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gcc_unused unsigned volume)
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{
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return true;
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}
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#endif
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void
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GlobalEvents::Emit(gcc_unused Event event)
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{
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}
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const struct filter_plugin *
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filter_plugin_by_name(gcc_unused const char *name)
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{
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assert(false);
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return NULL;
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}
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bool
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pcm_volume(gcc_unused void *buffer, gcc_unused size_t length,
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gcc_unused SampleFormat format,
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gcc_unused int volume)
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{
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assert(false);
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return false;
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}
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int main(int argc, gcc_unused char **argv)
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{
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int volume;
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if (argc != 2) {
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g_printerr("Usage: read_mixer PLUGIN\n");
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return 1;
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}
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#if !GLIB_CHECK_VERSION(2,32,0)
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g_thread_init(NULL);
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#endif
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main_loop = new EventLoop(EventLoop::Default());
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Error error;
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Mixer *mixer = mixer_new(&alsa_mixer_plugin, nullptr,
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config_param(), error);
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if (mixer == NULL) {
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g_printerr("mixer_new() failed: %s\n", error.GetMessage());
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return 2;
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}
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if (!mixer_open(mixer, error)) {
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mixer_free(mixer);
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g_printerr("failed to open the mixer: %s\n", error.GetMessage());
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return 2;
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}
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volume = mixer_get_volume(mixer, error);
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mixer_close(mixer);
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mixer_free(mixer);
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delete main_loop;
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assert(volume >= -1 && volume <= 100);
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if (volume < 0) {
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if (error.IsDefined()) {
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g_printerr("failed to read volume: %s\n",
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error.GetMessage());
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} else
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g_printerr("failed to read volume\n");
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return 2;
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}
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g_print("%d\n", volume);
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return 0;
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}
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