1 files changed, 161 insertions, 0 deletions
diff --git a/test/read_mixer.cxx b/test/read_mixer.cxx
new file mode 100644
index 000000000..8426443ae
--- /dev/null
+++ b/test/read_mixer.cxx
@@ -0,0 +1,161 @@
+/*
+ * 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;
+}