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-rw-r--r--src/mixer_control.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/mixer_control.c b/src/mixer_control.c
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+++ b/src/mixer_control.c
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "mixer_control.h"
+#include "mixer_api.h"
+#include "output_all.h"
+#include "output_plugin.h"
+#include "output_internal.h"
+
+bool
+mixer_control_setvol(unsigned int device, int volume, int rel)
+{
+ struct audio_output *output;
+ struct mixer *mixer;
+
+ if (device >= audio_output_count())
+ return false;
+
+ output = audio_output_get(device);
+ mixer = ao_plugin_get_mixer(output->plugin, output->data);
+ if (mixer != NULL) {
+ if (rel) {
+ int cur_volume = mixer_get_volume(mixer);
+ if (cur_volume < 0)
+ return false;
+
+ volume = volume + cur_volume;
+ }
+ if (volume > 100)
+ volume = 100;
+ else if (volume < 0)
+ volume = 0;
+
+ return mixer_set_volume(mixer, volume);
+ }
+ return false;
+}
+
+bool
+mixer_control_getvol(unsigned int device, int *volume)
+{
+ struct audio_output *output;
+ struct mixer *mixer;
+
+ if (device >= audio_output_count())
+ return false;
+
+ output = audio_output_get(device);
+ mixer = ao_plugin_get_mixer(output->plugin, output->data);
+ if (mixer != NULL) {
+ int volume2;
+
+ volume2 = mixer_get_volume(mixer);
+ if (volume2 < 0)
+ return false;
+
+ *volume = volume2;
+ return true;
+ }
+
+ return false;
+}