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Bug 1133449 - [B2G] The default audio type didn't be set correctly when the call screen app is launched. r=baku

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This commit is contained in:
Alastor Wu 2015-02-25 18:46:35 +08:00
parent 0317ef5fb4
commit 3410e25457
1 changed files with 17 additions and 6 deletions
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23
dom/audiochannel/AudioChannelService.cpp
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@ -525,15 +525,26 @@ AudioChannelService::SetDefaultVolumeControlChannelInternal(int32_t aChannel,
// If this child is in the background and mDefChannelChildID is set to
// others then it means other child in the foreground already set it's
// own default channel already.
if ((!aVisible && mDefChannelChildID != aChildID) ||
(mDefChannelChildID != aChildID &&
mDefChannelChildID != CONTENT_PROCESS_ID_UNKNOWN)) {
if (!aVisible && mDefChannelChildID != aChildID) {
return;
}
// Workaround for the call screen app. The call screen app is running on the
// main process, that will results in wrong visible state. Because we use the
// docshell's active state as visible state, the main process is always
// active. Therefore, we will see the strange situation that the visible
// state of the call screen is always true. If the mDefChannelChildID is set
// to others then it means other child in the foreground already set it's
// own default channel already.
// Summary :
// Child process : foreground app always can set type.
// Parent process : check the mDefChannelChildID.
else if (aChildID == CONTENT_PROCESS_ID_MAIN &&
mDefChannelChildID != CONTENT_PROCESS_ID_UNKNOWN) {
return;
}
mDefChannelChildID = aChildID;
nsString channelName;
mDefChannelChildID = aVisible ? aChildID : CONTENT_PROCESS_ID_UNKNOWN;
nsAutoString channelName;
if (aChannel == -1) {
channelName.AssignASCII("unknown");
} else {