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-rw-r--r--audio/mixer.h61
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+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPLAYER_MIXER_H
+#define MPLAYER_MIXER_H
+
+#include <stdbool.h>
+
+#include "libaf/af.h"
+#include "libao2/audio_out.h"
+
+enum {
+ SOFTVOL_NO = 0,
+ SOFTVOL_YES = 1,
+ SOFTVOL_AUTO = 2,
+};
+
+typedef struct mixer {
+ struct ao *ao;
+ struct af_stream *afilter;
+ int volstep;
+ int softvol;
+ float softvol_max;
+ bool muted;
+ bool muted_by_us;
+ bool muted_using_volume;
+ float vol_l, vol_r;
+ /* Contains ao driver name or "softvol" if volume is not persistent
+ * and needs to be restored after the driver is reinitialized. */
+ const char *restore_volume;
+ float balance;
+} mixer_t;
+
+void mixer_reinit(struct mixer *mixer, struct ao *ao);
+void mixer_uninit(struct mixer *mixer);
+void mixer_getvolume(mixer_t *mixer, float *l, float *r);
+void mixer_setvolume(mixer_t *mixer, float l, float r);
+void mixer_incvolume(mixer_t *mixer);
+void mixer_decvolume(mixer_t *mixer);
+void mixer_getbothvolume(mixer_t *mixer, float *b);
+void mixer_setmute(mixer_t *mixer, bool mute);
+bool mixer_getmute(mixer_t *mixer);
+void mixer_getbalance(mixer_t *mixer, float *bal);
+void mixer_setbalance(mixer_t *mixer, float bal);
+
+#endif /* MPLAYER_MIXER_H */