From 1862fdee4f25fa0a4c57bcec8ea8568a8d9c4762 Mon Sep 17 00:00:00 2001
From: Yoann Lopes <yoann.lopes@digia.com>
Date: Wed, 19 Jun 2013 12:22:26 +0200
Subject: Added system volume settings for Android.

Change-Id: I4ea5f24303f69d93a031b07dbc056c62eea9d358
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@digia.com>
---
 src/utils/qdroidutils.cpp | 94 +++++++++++++++++++++++++++++++++++++++++++++++
 src/utils/qdroidutils.h   | 20 ++++++++++
 src/utils/utils.pro       |  2 +-
 3 files changed, 115 insertions(+), 1 deletion(-)

diff --git a/src/utils/qdroidutils.cpp b/src/utils/qdroidutils.cpp
index 4247826..31ed09c 100644
--- a/src/utils/qdroidutils.cpp
+++ b/src/utils/qdroidutils.cpp
@@ -4,6 +4,7 @@
 #ifdef Q_OS_ANDROID_NO_SDK
 #include <cutils/android_reboot.h>
 #include <hardware/lights.h>
+#include <media/AudioSystem.h>
 #else
 #include <sys/reboot.h>
 #include <QNetworkInterface>
@@ -43,6 +44,99 @@ void QDroidUtils::powerOffSystem()
     qWarning("powerOff returned");
 }
 
+/*!
+ * Sets the master volume to \a volume.
+ * The volume can range from 0 to 100 and is linear.
+ * Changing the master volume will affect all audio streams.
+ *
+ * \sa setStreamVolume()
+ * \sa setMasterMute()
+ */
+void QDroidUtils::setMasterVolume(int volume)
+{
+#ifdef Q_OS_ANDROID_NO_SDK
+    volume = qBound(0, volume, 100);
+    android::AudioSystem::setMasterVolume(android::AudioSystem::linearToLog(volume));
+#endif
+}
+
+/*!
+ * Sets the master mute to \a mute. Setting it to true will disable all
+ * sounds on the device.
+ *
+ * \sa setMasterVolume()
+ * \sa setStreamMute()
+ */
+void QDroidUtils::setMasterMute(bool mute)
+{
+#ifdef Q_OS_ANDROID_NO_SDK
+    android::AudioSystem::setMasterMute(mute);
+#endif
+}
+
+/*!
+    \enum QDroidUtils::AudioStreamType
+    \value DefaultAudioStream
+           The default audio stream
+
+    \value VoiceCallAudioStream
+           The audio stream for phone calls
+
+    \value SystemAudioStream
+           The audio stream for system sounds
+
+    \value RingAudioStream
+           The audio stream for the phone ring
+
+    \value AlarmAudioStream
+           The audio stream for alarms
+
+    \value NotificationAudioStream
+           The audio stream for notifications
+
+    \value BluetoothAudioStream
+           The audio stream for audio transmitted over bluetooth
+
+    \value EnforcedAudibleAudioStream
+           Sounds that cannot be muted by user and must be routed to speaker
+
+    \value DTMFAudioStream
+           The audio stream for DTMF Tones
+
+    \value TTSAudioStream
+           The audio stream for text-to-speech
+*/
+
+/*!
+ * Sets the volume for a specific audio \a stream type to \a volume.
+ * The volume can range from 0 to 100 and is linear.
+ * All streams of the specified type will be affected.
+ *
+ * \sa setMasterVolume()
+ * \sa setStreamMute()
+ */
+void QDroidUtils::setStreamVolume(AudioStreamType streamType, int volume)
+{
+#ifdef Q_OS_ANDROID_NO_SDK
+    volume = qBound(0, volume, 100);
+    android::AudioSystem::setStreamVolume(audio_stream_type_t(streamType),
+                                          android::AudioSystem::linearToLog(volume), 0);
+#endif
+}
+
+/*!
+ * Mutes all audio \a streams of type \a streamType.
+ *
+ * \sa setStreamVolume()
+ * \sa setMasterMute()
+ */
+void QDroidUtils::setStreamMute(AudioStreamType streamType, bool mute)
+{
+#ifdef Q_OS_ANDROID_NO_SDK
+    android::AudioSystem::setStreamMute(audio_stream_type_t(streamType), mute);
+#endif
+}
+
 /*!
  * Sets the display brightness (i.e. the intensity of the backlight)
  * to \a value. A value of 255 requests maximum brightness, while 0 requests
diff --git a/src/utils/qdroidutils.h b/src/utils/qdroidutils.h
index 52efc4a..7f37f70 100644
--- a/src/utils/qdroidutils.h
+++ b/src/utils/qdroidutils.h
@@ -6,7 +6,22 @@
 class Q_DECL_EXPORT QDroidUtils : public QObject
 {
     Q_OBJECT
+    Q_ENUMS(AudioStreamType)
 public:
+    enum AudioStreamType {
+        DefaultAudioStream = -1,
+        VoiceCallAudioStream = 0,
+        SystemAudioStream = 1,
+        RingAudioStream = 2,
+        MusicAudioStream = 3,
+        AlarmAudioStream = 4,
+        NotificationAudioStream = 5,
+        BluetoothAudioStream    = 6,
+        EnforcedAudibleAudioStream = 7,
+        DTMFAudioStream = 8,
+        TTSAudioStream = 9
+    };
+
     QDroidUtils(QObject* parent = 0) : QObject(parent)
     {
     }
@@ -21,6 +36,11 @@ public Q_SLOTS:
     void rebootSystem();
     void powerOffSystem();
 
+    void setMasterVolume(int volume);
+    void setMasterMute(bool mute);
+    void setStreamVolume(AudioStreamType stream, int volume);
+    void setStreamMute(AudioStreamType stream, bool mute);
+
     bool setDisplayBrightness(quint8 value);
 
     QString getIPAddress();
diff --git a/src/utils/utils.pro b/src/utils/utils.pro
index 63ddf42..5711337 100644
--- a/src/utils/utils.pro
+++ b/src/utils/utils.pro
@@ -11,7 +11,7 @@ QT = core network
 MODULE = droidutils
 load(qt_module)
 
-android: LIBS += -lhardware -lcutils
+android: LIBS += -lmedia -lhardware -lcutils
 
 HEADERS += \
     $$PWD/qdroidutils.h
-- 
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