/* * Copyright (C) 2003-2011 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 "config.h" #include "MixerControl.hxx" #include "MixerList.hxx" #include "FilterRegistry.hxx" #include "pcm/PcmVolume.hxx" #include "GlobalEvents.hxx" #include "Main.hxx" #include "event/Loop.hxx" #include "ConfigData.hxx" #include "util/Error.hxx" #include <glib.h> #include <assert.h> #include <string.h> #include <unistd.h> EventLoop *main_loop; #ifdef HAVE_PULSE #include "output/PulseOutputPlugin.hxx" void pulse_output_lock(gcc_unused PulseOutput *po) { } void pulse_output_unlock(gcc_unused PulseOutput *po) { } void pulse_output_set_mixer(gcc_unused PulseOutput *po, gcc_unused PulseMixer *pm) { } void pulse_output_clear_mixer(gcc_unused PulseOutput *po, gcc_unused PulseMixer *pm) { } bool pulse_output_set_volume(gcc_unused PulseOutput *po, gcc_unused const struct pa_cvolume *volume, gcc_unused Error &error) { return false; } #endif #ifdef HAVE_ROAR #include "output/RoarOutputPlugin.hxx" int roar_output_get_volume(gcc_unused RoarOutput *roar) { return -1; } bool roar_output_set_volume(gcc_unused RoarOutput *roar, gcc_unused unsigned volume) { return true; } #endif void GlobalEvents::Emit(gcc_unused Event event) { } const struct filter_plugin * filter_plugin_by_name(gcc_unused const char *name) { assert(false); return NULL; } bool pcm_volume(gcc_unused void *buffer, gcc_unused size_t length, gcc_unused SampleFormat format, gcc_unused int volume) { assert(false); return false; } int main(int argc, gcc_unused char **argv) { int volume; if (argc != 2) { g_printerr("Usage: read_mixer PLUGIN\n"); return 1; } #if !GLIB_CHECK_VERSION(2,32,0) g_thread_init(NULL); #endif main_loop = new EventLoop(EventLoop::Default()); Error error; Mixer *mixer = mixer_new(&alsa_mixer_plugin, nullptr, config_param(), error); if (mixer == NULL) { g_printerr("mixer_new() failed: %s\n", error.GetMessage()); return 2; } if (!mixer_open(mixer, error)) { mixer_free(mixer); g_printerr("failed to open the mixer: %s\n", error.GetMessage()); return 2; } volume = mixer_get_volume(mixer, error); mixer_close(mixer); mixer_free(mixer); delete main_loop; assert(volume >= -1 && volume <= 100); if (volume < 0) { if (error.IsDefined()) { g_printerr("failed to read volume: %s\n", error.GetMessage()); } else g_printerr("failed to read volume\n"); return 2; } g_print("%d\n", volume); return 0; }