final FocusRequester exFocusOwner = mFocusStack.pop();
exFocusOwner.handleFocusLoss(AudioManager.AUDIOFOCUS_LOSS);
exFocusOwner.release();
- // clear RCD
- synchronized(mPRStack) {
- clearRemoteControlDisplay_syncAfRcs();
- }
}
}
}
if (signal) {
// notify the new top of the stack it gained focus
notifyTopOfAudioFocusStack();
- // there's a new top of the stack, let the remote control know
- synchronized(mPRStack) {
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
}
} else {
// focus is abandoned by a client that's not at the top of the stack,
// we removed an entry at the top of the stack:
// notify the new top of the stack it gained focus.
notifyTopOfAudioFocusStack();
- // there's a new top of the stack, let the remote control know
- synchronized(mPRStack) {
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
}
}
mFocusStack.push(new FocusRequester(mainStreamType, focusChangeHint, fd, cb,
clientId, afdh, callingPackageName, Binder.getCallingUid()));
- // there's a new top of the stack, let the remote control know
- synchronized(mPRStack) {
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
}//synchronized(mAudioFocusLock)
return AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
/**
* Helper function:
* Set the new remote control receiver at the top of the RC focus stack.
- * Called synchronized on mAudioFocusLock, then mPRStack
+ * Called synchronized on mPRStack
* precondition: mediaIntent != null
* @return true if mPRStack was changed, false otherwise
*/
- private boolean pushMediaButtonReceiver_syncAfRcs(PendingIntent mediaIntent,
+ private boolean pushMediaButtonReceiver_syncPrs(PendingIntent mediaIntent,
ComponentName target, IBinder token) {
// already at top of stack?
if (!mPRStack.empty() && mPRStack.peek().hasMatchingMediaButtonIntent(mediaIntent)) {
/**
* Helper function:
* Remove the remote control receiver from the RC focus stack.
- * Called synchronized on mAudioFocusLock, then mPRStack
+ * Called synchronized on mPRStack
* precondition: pi != null
*/
- private void removeMediaButtonReceiver_syncAfRcs(PendingIntent pi) {
+ private void removeMediaButtonReceiver_syncPrs(PendingIntent pi) {
try {
for (int index = mPRStack.size()-1; index >= 0; index--) {
final PlayerRecord prse = mPRStack.elementAt(index);
* Helper function:
* Called synchronized on mPRStack
*/
- private void clearRemoteControlDisplay_syncAfRcs() {
+ private void clearRemoteControlDisplay_syncPrs() {
synchronized(mCurrentRcLock) {
mCurrentRcClient = null;
}
/**
* Helper function for code readability: only to be called from
- * checkUpdateRemoteControlDisplay_syncAfRcs() which checks the preconditions for
+ * checkUpdateRemoteControlDisplay_syncPrs() which checks the preconditions for
* this method.
* Preconditions:
- * - called synchronized mAudioFocusLock then on mPRStack
+ * - called synchronized on mPRStack
* - mPRStack.isEmpty() is false
*/
- private void updateRemoteControlDisplay_syncAfRcs(int infoChangedFlags) {
+ private void updateRemoteControlDisplay_syncPrs(int infoChangedFlags) {
PlayerRecord prse = mPRStack.peek();
int infoFlagsAboutToBeUsed = infoChangedFlags;
// this is where we enforce opt-in for information display on the remote controls
// with the new AudioManager.registerRemoteControlClient() API
if (prse.getRcc() == null) {
//Log.w(TAG, "Can't update remote control display with null remote control client");
- clearRemoteControlDisplay_syncAfRcs();
+ clearRemoteControlDisplay_syncPrs();
return;
}
synchronized(mCurrentRcLock) {
/**
* Helper function:
- * Called synchronized on mAudioFocusLock, then mPRStack
+ * Called synchronized on mPRStack
* Check whether the remote control display should be updated, triggers the update if required
* @param infoChangedFlags the flags corresponding to the remote control client information
* that has changed, if applicable (checking for the update conditions might trigger a
* clear, rather than an update event).
*/
- private void checkUpdateRemoteControlDisplay_syncAfRcs(int infoChangedFlags) {
+ private void checkUpdateRemoteControlDisplay_syncPrs(int infoChangedFlags) {
// determine whether the remote control display should be refreshed
- // if either stack is empty, there is a mismatch, so clear the RC display
- if (mPRStack.isEmpty() || mFocusStack.isEmpty()) {
- clearRemoteControlDisplay_syncAfRcs();
+ // if the player record stack is empty, there is nothing to display, so clear the RC display
+ if (mPRStack.isEmpty()) {
+ clearRemoteControlDisplay_syncPrs();
return;
}
- // determine which entry in the AudioFocus stack to consider, and compare against the
- // top of the stack for the media button event receivers : simply using the top of the
- // stack would make the entry disappear from the RemoteControlDisplay in conditions such as
- // notifications playing during music playback.
- // Crawl the AudioFocus stack from the top until an entry is found with the following
- // characteristics:
- // - focus gain on STREAM_MUSIC stream
- // - non-transient focus gain on a stream other than music
- FocusRequester af = null;
- try {
- for (int index = mFocusStack.size()-1; index >= 0; index--) {
- FocusRequester fr = mFocusStack.elementAt(index);
- if ((fr.getStreamType() == AudioManager.STREAM_MUSIC)
- || (fr.getGainRequest() == AudioManager.AUDIOFOCUS_GAIN)) {
- af = fr;
- break;
- }
- }
- } catch (ArrayIndexOutOfBoundsException e) {
- Log.e(TAG, "Wrong index accessing audio focus stack when updating RCD: " + e);
- af = null;
- }
- if (af == null) {
- clearRemoteControlDisplay_syncAfRcs();
- return;
- }
-
- // if the audio focus and RC owners belong to different packages, there is a mismatch, clear
- if (!af.hasSamePackage(mPRStack.peek().getCallingPackageName())) {
- clearRemoteControlDisplay_syncAfRcs();
- return;
- }
- // if the audio focus didn't originate from the same Uid as the one in which the remote
- // control information will be retrieved, clear
- if (!af.hasSameUid(mPRStack.peek().getCallingUid())) {
- clearRemoteControlDisplay_syncAfRcs();
- return;
- }
+ // this is where more rules for refresh go
// refresh conditions were verified: update the remote controls
- // ok to call: synchronized mAudioFocusLock then on mPRStack, mPRStack is not empty
- updateRemoteControlDisplay_syncAfRcs(infoChangedFlags);
+ // ok to call: synchronized on mPRStack, mPRStack is not empty
+ updateRemoteControlDisplay_syncPrs(infoChangedFlags);
}
/**
private void onPromoteRcc(int rccId) {
if (DEBUG_RC) { Log.d(TAG, "Promoting RCC " + rccId); }
- synchronized(mAudioFocusLock) {
- synchronized(mPRStack) {
- // ignore if given RCC ID is already at top of remote control stack
- if (!mPRStack.isEmpty() && (mPRStack.peek().getRccId() == rccId)) {
- return;
- }
- int indexToPromote = -1;
- try {
- for (int index = mPRStack.size()-1; index >= 0; index--) {
- final PlayerRecord prse = mPRStack.elementAt(index);
- if (prse.getRccId() == rccId) {
- indexToPromote = index;
- break;
- }
- }
- if (indexToPromote >= 0) {
- if (DEBUG_RC) { Log.d(TAG, " moving RCC from index " + indexToPromote
- + " to " + (mPRStack.size()-1)); }
- final PlayerRecord prse = mPRStack.remove(indexToPromote);
- mPRStack.push(prse);
- // the RC stack changed, reevaluate the display
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
+ synchronized(mPRStack) {
+ // ignore if given RCC ID is already at top of remote control stack
+ if (!mPRStack.isEmpty() && (mPRStack.peek().getRccId() == rccId)) {
+ return;
+ }
+ int indexToPromote = -1;
+ try {
+ for (int index = mPRStack.size()-1; index >= 0; index--) {
+ final PlayerRecord prse = mPRStack.elementAt(index);
+ if (prse.getRccId() == rccId) {
+ indexToPromote = index;
+ break;
}
- } catch (ArrayIndexOutOfBoundsException e) {
- // not expected to happen, indicates improper concurrent modification
- Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
}
- }//synchronized(mPRStack)
- }//synchronized(mAudioFocusLock)
+ if (indexToPromote >= 0) {
+ if (DEBUG_RC) { Log.d(TAG, " moving RCC from index " + indexToPromote
+ + " to " + (mPRStack.size()-1)); }
+ final PlayerRecord prse = mPRStack.remove(indexToPromote);
+ mPRStack.push(prse);
+ // the RC stack changed, reevaluate the display
+ checkUpdateRemoteControlDisplay_syncPrs(RC_INFO_ALL);
+ }
+ } catch (ArrayIndexOutOfBoundsException e) {
+ // not expected to happen, indicates improper concurrent modification
+ Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
+ }
+ }//synchronized(mPRStack)
}
/**
IBinder token) {
Log.i(TAG, " Remote Control registerMediaButtonIntent() for " + mediaIntent);
- synchronized(mAudioFocusLock) {
- synchronized(mPRStack) {
- if (pushMediaButtonReceiver_syncAfRcs(mediaIntent, eventReceiver, token)) {
- // new RC client, assume every type of information shall be queried
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
+ synchronized(mPRStack) {
+ if (pushMediaButtonReceiver_syncPrs(mediaIntent, eventReceiver, token)) {
+ // new RC client, assume every type of information shall be queried
+ checkUpdateRemoteControlDisplay_syncPrs(RC_INFO_ALL);
}
}
}
{
Log.i(TAG, " Remote Control unregisterMediaButtonIntent() for " + mediaIntent);
- synchronized(mAudioFocusLock) {
- synchronized(mPRStack) {
- boolean topOfStackWillChange = isCurrentRcController(mediaIntent);
- removeMediaButtonReceiver_syncAfRcs(mediaIntent);
- if (topOfStackWillChange) {
- // current RC client will change, assume every type of info needs to be queried
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
+ synchronized(mPRStack) {
+ boolean topOfStackWillChange = isCurrentRcController(mediaIntent);
+ removeMediaButtonReceiver_syncPrs(mediaIntent);
+ if (topOfStackWillChange) {
+ // current RC client will change, assume every type of info needs to be queried
+ checkUpdateRemoteControlDisplay_syncPrs(RC_INFO_ALL);
}
}
}
IRemoteControlClient rcClient, String callingPackageName) {
if (DEBUG_RC) Log.i(TAG, "Register remote control client rcClient="+rcClient);
int rccId = RemoteControlClient.RCSE_ID_UNREGISTERED;
- synchronized(mAudioFocusLock) {
- synchronized(mPRStack) {
- // store the new display information
- try {
- for (int index = mPRStack.size()-1; index >= 0; index--) {
- final PlayerRecord prse = mPRStack.elementAt(index);
- if(prse.hasMatchingMediaButtonIntent(mediaIntent)) {
- prse.resetControllerInfoForRcc(rcClient, callingPackageName,
- Binder.getCallingUid());
+ synchronized(mPRStack) {
+ // store the new display information
+ try {
+ for (int index = mPRStack.size()-1; index >= 0; index--) {
+ final PlayerRecord prse = mPRStack.elementAt(index);
+ if(prse.hasMatchingMediaButtonIntent(mediaIntent)) {
+ prse.resetControllerInfoForRcc(rcClient, callingPackageName,
+ Binder.getCallingUid());
- if (rcClient == null) {
- break;
- }
+ if (rcClient == null) {
+ break;
+ }
- rccId = prse.getRccId();
+ rccId = prse.getRccId();
- // there is a new (non-null) client:
- // give the new client the displays (if any)
- if (mRcDisplays.size() > 0) {
- plugRemoteControlDisplaysIntoClient_syncRcStack(prse.getRcc());
- }
- break;
+ // there is a new (non-null) client:
+ // give the new client the displays (if any)
+ if (mRcDisplays.size() > 0) {
+ plugRemoteControlDisplaysIntoClient_syncPrs(prse.getRcc());
}
- }//for
- } catch (ArrayIndexOutOfBoundsException e) {
- // not expected to happen, indicates improper concurrent modification
- Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
- }
+ break;
+ }
+ }//for
+ } catch (ArrayIndexOutOfBoundsException e) {
+ // not expected to happen, indicates improper concurrent modification
+ Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
+ }
- // if the eventReceiver is at the top of the stack
- // then check for potential refresh of the remote controls
- if (isCurrentRcController(mediaIntent)) {
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
- }
- }//synchronized(mPRStack)
- }//synchronized(mAudioFocusLock)
+ // if the eventReceiver is at the top of the stack
+ // then check for potential refresh of the remote controls
+ if (isCurrentRcController(mediaIntent)) {
+ checkUpdateRemoteControlDisplay_syncPrs(RC_INFO_ALL);
+ }
+ }//synchronized(mPRStack)
return rccId;
}
protected void unregisterRemoteControlClient(PendingIntent mediaIntent,
IRemoteControlClient rcClient) {
if (DEBUG_RC) Log.i(TAG, "Unregister remote control client rcClient="+rcClient);
- synchronized(mAudioFocusLock) {
- synchronized(mPRStack) {
- boolean topRccChange = false;
- try {
- for (int index = mPRStack.size()-1; index >= 0; index--) {
- final PlayerRecord prse = mPRStack.elementAt(index);
- if ((prse.hasMatchingMediaButtonIntent(mediaIntent))
- && rcClient.equals(prse.getRcc())) {
- // we found the IRemoteControlClient to unregister
- prse.resetControllerInfoForNoRcc();
- topRccChange = (index == mPRStack.size()-1);
- // there can only be one matching RCC in the RC stack, we're done
- break;
- }
+ synchronized(mPRStack) {
+ boolean topRccChange = false;
+ try {
+ for (int index = mPRStack.size()-1; index >= 0; index--) {
+ final PlayerRecord prse = mPRStack.elementAt(index);
+ if ((prse.hasMatchingMediaButtonIntent(mediaIntent))
+ && rcClient.equals(prse.getRcc())) {
+ // we found the IRemoteControlClient to unregister
+ prse.resetControllerInfoForNoRcc();
+ topRccChange = (index == mPRStack.size()-1);
+ // there can only be one matching RCC in the RC stack, we're done
+ break;
}
- } catch (ArrayIndexOutOfBoundsException e) {
- // not expected to happen, indicates improper concurrent modification
- Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
- }
- if (topRccChange) {
- // no more RCC for the RCD, check for potential refresh of the remote controls
- checkUpdateRemoteControlDisplay_syncAfRcs(RC_INFO_ALL);
}
+ } catch (ArrayIndexOutOfBoundsException e) {
+ // not expected to happen, indicates improper concurrent modification
+ Log.e(TAG, "Wrong index accessing RC stack, lock error? ", e);
+ }
+ if (topRccChange) {
+ // no more RCC for the RCD, check for potential refresh of the remote controls
+ checkUpdateRemoteControlDisplay_syncPrs(RC_INFO_ALL);
}
}
}
* Plug each registered display into the specified client
* @param rcc, guaranteed non null
*/
- private void plugRemoteControlDisplaysIntoClient_syncRcStack(IRemoteControlClient rcc) {
+ private void plugRemoteControlDisplaysIntoClient_syncPrs(IRemoteControlClient rcc) {
final Iterator<DisplayInfoForServer> displayIterator = mRcDisplays.iterator();
while (displayIterator.hasNext()) {
final DisplayInfoForServer di = displayIterator.next();
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