audiopolicy: rework stream activity for volume management on output
-Manage duplicated output ref count in client itself
-Use VolumeSource to track volume activity in output
(today mapped on legacy stream type)
-Use accessor APIs to control activity/mute from apm.
Test: audio smoke tests
Bug: 124767636
Change-Id: I452e3973f6869d41231d984896a5886ebb86afb1
Signed-off-by: François Gaffie <francois.gaffie@renault.com>
diff --git a/services/audiopolicy/common/include/Volume.h b/services/audiopolicy/common/include/Volume.h
index 5ccc8fd..a3b6b36 100644
--- a/services/audiopolicy/common/include/Volume.h
+++ b/services/audiopolicy/common/include/Volume.h
@@ -20,6 +20,22 @@
#include <utils/Log.h>
#include <math.h>
+namespace android {
+/**
+ * VolumeSource is the discriminent for volume management on an output.
+ * It used to be the stream type by legacy, it may be host volume group or a volume curves if
+ * we allow to have more than one curve per volume group.
+ */
+enum VolumeSource : std::underlying_type<audio_stream_type_t>::type;
+static const VolumeSource VOLUME_SOURCE_NONE = static_cast<VolumeSource>(AUDIO_STREAM_DEFAULT);
+
+static inline VolumeSource streamToVolumeSource(audio_stream_type_t stream) {
+ return static_cast<VolumeSource>(stream);
+}
+
+
+} // namespace android
+
// Absolute min volume in dB (can be represented in single precision normal float value)
#define VOLUME_MIN_DB (-758)