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Merge "Add support for non-linear ramping of master volume adjustment"

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This commit is contained in:
Mike Lockwood
2012-02-10 21:55:52 -08:00
committed by Android (Google) Code Review
parent 8fdaf785e2 9760647dd0
commit f96901f8cc
3 changed files with 39 additions and 13 deletions
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11
core/res/res/values/config.xml
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@@ -65,6 +65,17 @@
master volume stream and nothing else . -->
<bool name="config_useMasterVolume">false</bool>
<!-- Array of integer pairs controlling the rate at which the master volume changes
in response to volume up and down key events.
The first integer of each pair is compared against the current master volume
(in range 0 to 100).
The last pair with first integer <= the current volume is chosen,
and the second integer of the pair indicates the amount to increase the master volume
when volume up is pressed. -->
<integer-array name="config_masterVolumeRamp">
<item>0</item> <item>5</item> <!-- default: always increase volume by 5% -->
</integer-array>
<!-- Flag indicating whether the AUDIO_BECOMING_NOISY notification should
be sent during an change to the audio output device. -->
<bool name="config_sendAudioBecomingNoisy">true</bool>

1
core/res/res/values/public.xml
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@@ -862,6 +862,7 @@
<java-symbol type="array" name="preloaded_drawables" />
<java-symbol type="array" name="special_locale_codes" />
<java-symbol type="array" name="special_locale_names" />
<java-symbol type="array" name="config_masterVolumeRamp" />
<java-symbol type="drawable" name="default_wallpaper" />
<java-symbol type="drawable" name="ic_suggestions_add" />

40
media/java/android/media/AudioService.java
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@@ -137,10 +137,6 @@ public class AudioService extends IAudioService.Stub {
// Timeout for connection to bluetooth headset service
private static final int BT_HEADSET_CNCT_TIMEOUT_MS = 3000;
// Amount to raise/lower master volume
// FIXME - this should probably be in a resource
private static final float MASTER_VOLUME_INCREMENT = 0.05f;
/** @see AudioSystemThread */
private AudioSystemThread mAudioSystemThread;
/** @see AudioHandler */
@@ -286,6 +282,8 @@ public class AudioService extends IAudioService.Stub {
// True if we have master volume support
private final boolean mUseMasterVolume;
private final int[] mMasterVolumeRamp;
// List of binder death handlers for setMode() client processes.
// The last process to have called setMode() is at the top of the list.
private final ArrayList <SetModeDeathHandler> mSetModeDeathHandlers = new ArrayList <SetModeDeathHandler>();
@@ -416,6 +414,9 @@ public class AudioService extends IAudioService.Stub {
mUseMasterVolume = context.getResources().getBoolean(
com.android.internal.R.bool.config_useMasterVolume);
restoreMasterVolume();
mMasterVolumeRamp = context.getResources().getIntArray(
com.android.internal.R.array.config_masterVolumeRamp);
}
private void createAudioSystemThread() {
@@ -620,19 +621,27 @@ public class AudioService extends IAudioService.Stub {
/** @see AudioManager#adjustMasterVolume(int) */
public void adjustMasterVolume(int direction, int flags) {
ensureValidDirection(direction);
float volume = AudioSystem.getMasterVolume();
if (volume >= 0.0) {
// get current master volume adjusted to 0 to 100
int volume = Math.round(AudioSystem.getMasterVolume() * MAX_MASTER_VOLUME);
int delta = 0;
for (int i = 0; i < mMasterVolumeRamp.length; i += 2) {
int testVolume = mMasterVolumeRamp[i];
int testDelta = mMasterVolumeRamp[i + 1];
if (direction == AudioManager.ADJUST_RAISE) {
volume += MASTER_VOLUME_INCREMENT;
if (volume > 1.0f) volume = 1.0f;
if (volume >= testVolume) {
delta = testDelta;
} else {
break;
}
} else if (direction == AudioManager.ADJUST_LOWER) {
volume -= MASTER_VOLUME_INCREMENT;
if (volume < 0.0f) volume = 0.0f;
if (volume - testDelta >= testVolume) {
delta = -testDelta;
} else {
break;
}
}
doSetMasterVolume(volume, flags);
}
// Log.d(TAG, "adjustMasterVolume volume: " + volume + " delta: " + delta + " direction: " + direction);
setMasterVolume(volume + delta, flags);
}
/** @see AudioManager#setStreamVolume(int, int, int) */
@@ -805,6 +814,11 @@ public class AudioService extends IAudioService.Stub {
}
public void setMasterVolume(int volume, int flags) {
if (volume < 0) {
volume = 0;
} else if (volume > MAX_MASTER_VOLUME) {
volume = MAX_MASTER_VOLUME;
}
doSetMasterVolume((float)volume / MAX_MASTER_VOLUME, flags);
}