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author | Weiyin Jiang <wjiang@codeaurora.org> | 2015-01-28 16:14:02 +0800 |
---|---|---|
committer | Lajos Molnar <lajos@google.com> | 2015-02-06 16:32:24 -0800 |
commit | 35d5af131c9d4962e935082f204ccd6a2130861c (patch) | |
tree | 3a0456f7e9ddba7cddb0769f2a15d1589f820647 /media/libstagefright/foundation | |
parent | 17e95f40a534101e2df48f077a8029430adef6c3 (diff) | |
download | frameworks_av-35d5af131c9d4962e935082f204ccd6a2130861c.zip frameworks_av-35d5af131c9d4962e935082f204ccd6a2130861c.tar.gz frameworks_av-35d5af131c9d4962e935082f204ccd6a2130861c.tar.bz2 |
nuplayer: acquire wakelock during offload pause timeout
Hold a wakelock while paused in audio offload mode, until audio
teardown event is received, or pause is canceled.
Since ARM cores are sleeping, the delayed AMessage will not be
received, and the audio output driver will not be closed.
This blocks XO shutdown.
Bug: 19297092
Change-Id: I3d11fef633e3f2783f4aa31e71285e2fa09d234c
Diffstat (limited to 'media/libstagefright/foundation')
-rw-r--r-- | media/libstagefright/foundation/AWakeLock.cpp | 109 | ||||
-rw-r--r-- | media/libstagefright/foundation/Android.mk | 4 |
2 files changed, 112 insertions, 1 deletions
diff --git a/media/libstagefright/foundation/AWakeLock.cpp b/media/libstagefright/foundation/AWakeLock.cpp new file mode 100644 index 0000000..88c4f6e --- /dev/null +++ b/media/libstagefright/foundation/AWakeLock.cpp @@ -0,0 +1,109 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +//#define LOG_NDEBUG 0 +#define LOG_TAG "AWakeLock" +#include <utils/Log.h> + +#include "ADebug.h" +#include "AWakeLock.h" + +#include <binder/IPCThreadState.h> +#include <binder/IServiceManager.h> +#include <powermanager/PowerManager.h> + + +namespace android { + +AWakeLock::AWakeLock() : + mPowerManager(NULL), + mWakeLockToken(NULL), + mWakeLockCount(0), + mDeathRecipient(new PMDeathRecipient(this)) {} + +AWakeLock::~AWakeLock() { + if (mPowerManager != NULL) { + sp<IBinder> binder = mPowerManager->asBinder(); + binder->unlinkToDeath(mDeathRecipient); + } + clearPowerManager(); +} + +bool AWakeLock::acquire() { + if (mWakeLockCount == 0) { + CHECK(mWakeLockToken == NULL); + if (mPowerManager == NULL) { + // use checkService() to avoid blocking if power service is not up yet + sp<IBinder> binder = + defaultServiceManager()->checkService(String16("power")); + if (binder == NULL) { + ALOGW("could not get the power manager service"); + } else { + mPowerManager = interface_cast<IPowerManager>(binder); + binder->linkToDeath(mDeathRecipient); + } + } + if (mPowerManager != NULL) { + sp<IBinder> binder = new BBinder(); + int64_t token = IPCThreadState::self()->clearCallingIdentity(); + status_t status = mPowerManager->acquireWakeLock( + POWERMANAGER_PARTIAL_WAKE_LOCK, + binder, String16("AWakeLock"), String16("media")); + IPCThreadState::self()->restoreCallingIdentity(token); + if (status == NO_ERROR) { + mWakeLockToken = binder; + mWakeLockCount++; + return true; + } + } + } else { + mWakeLockCount++; + return true; + } + return false; +} + +void AWakeLock::release(bool force) { + if (mWakeLockCount == 0) { + return; + } + if (force) { + // Force wakelock release below by setting reference count to 1. + mWakeLockCount = 1; + } + if (--mWakeLockCount == 0) { + CHECK(mWakeLockToken != NULL); + if (mPowerManager != NULL) { + int64_t token = IPCThreadState::self()->clearCallingIdentity(); + mPowerManager->releaseWakeLock(mWakeLockToken, 0 /* flags */); + IPCThreadState::self()->restoreCallingIdentity(token); + } + mWakeLockToken.clear(); + } +} + +void AWakeLock::clearPowerManager() { + release(true); + mPowerManager.clear(); +} + +void AWakeLock::PMDeathRecipient::binderDied(const wp<IBinder>& who __unused) { + if (mWakeLock != NULL) { + mWakeLock->clearPowerManager(); + } +} + +} // namespace android diff --git a/media/libstagefright/foundation/Android.mk b/media/libstagefright/foundation/Android.mk index c1dd6ce..08355c7 100644 --- a/media/libstagefright/foundation/Android.mk +++ b/media/libstagefright/foundation/Android.mk @@ -14,6 +14,7 @@ LOCAL_SRC_FILES:= \ ANetworkSession.cpp \ AString.cpp \ AStringUtils.cpp \ + AWakeLock.cpp \ ParsedMessage.cpp \ base64.cpp \ hexdump.cpp @@ -25,7 +26,8 @@ LOCAL_SHARED_LIBRARIES := \ libbinder \ libutils \ libcutils \ - liblog + liblog \ + libpowermanager LOCAL_CFLAGS += -Wno-multichar -Werror |