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package org.codeaurora.gallery3d.video;
import android.content.Context;
import android.media.AudioManager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import com.android.gallery3d.R;
public class StereoAudioHooker extends MovieHooker {
private static final String TAG = "StereoAudioHooker";
private static final boolean LOG = true;
private static final int MENU_STEREO_AUDIO = 1;
private MenuItem mMenuStereoAudio;
private static final String KEY_STEREO = "EnableStereoOutput";
private boolean mSystemStereoAudio;
private boolean mCurrentStereoAudio;
private boolean mIsInitedStereoAudio;
private AudioManager mAudioManager;
@Override
public void onStart() {
super.onStart();
enableStereoAudio();
}
@Override
public void onStop() {
super.onStop();
restoreStereoAudio();
}
@Override
public boolean onCreateOptionsMenu(final Menu menu) {
super.onCreateOptionsMenu(menu);
mMenuStereoAudio = menu.add(0, getMenuActivityId(MENU_STEREO_AUDIO), 0,
R.string.single_track);
return true;
}
@Override
public boolean onPrepareOptionsMenu(final Menu menu) {
super.onPrepareOptionsMenu(menu);
updateStereoAudioIcon();
return true;
}
@Override
public boolean onOptionsItemSelected(final MenuItem item) {
super.onOptionsItemSelected(item);
switch (getMenuOriginalId(item.getItemId())) {
case MENU_STEREO_AUDIO:
mCurrentStereoAudio = !mCurrentStereoAudio;
setStereoAudio(mCurrentStereoAudio);
return true;
default:
return false;
}
}
private boolean getStereoAudio() {
boolean isstereo = false;
if (mAudioManager == null) {
mAudioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
}
final String stereo = mAudioManager.getParameters(KEY_STEREO);
final String key = KEY_STEREO + "=1";
if (stereo != null && stereo.indexOf(key) > -1) {
isstereo = true;
} else {
isstereo = false;
}
if (LOG) {
Log.v(TAG, "getStereoAudio() isstereo=" + isstereo + ", stereo=" + stereo
+ ", key=" + key);
}
return isstereo;
}
private void setStereoAudio(final boolean flag) {
final String value = KEY_STEREO + "=" + (flag ? "1" : "0");
if (mAudioManager == null) {
mAudioManager = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
}
mAudioManager.setParameters(value);
if (LOG) {
Log.v(TAG, "setStereoAudio(" + flag + ") value=" + value);
}
}
private void updateStereoAudioIcon() {
if (mMenuStereoAudio != null) {
if (mCurrentStereoAudio) {
mMenuStereoAudio.setTitle(R.string.single_track);
mMenuStereoAudio.setIcon(R.drawable.ic_menu_single_track);
} else {
mMenuStereoAudio.setTitle(R.string.stereo);
mMenuStereoAudio.setIcon(R.drawable.ic_menu_stereo);
}
}
}
private void enableStereoAudio() {
if (LOG) {
Log.v(TAG, "enableStereoAudio() mIsInitedStereoAudio=" + mIsInitedStereoAudio
+ ", mCurrentStereoAudio=" + mCurrentStereoAudio);
}
mSystemStereoAudio = getStereoAudio();
if (!mIsInitedStereoAudio) {
mCurrentStereoAudio = mSystemStereoAudio;
mIsInitedStereoAudio = true;
} else {
// restore old stereo type
setStereoAudio(mCurrentStereoAudio);
}
updateStereoAudioIcon();
}
private void restoreStereoAudio() {
setStereoAudio(mSystemStereoAudio);
}
}
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