Camera: Add ProCamera private binder interface for an API2-light functionality
Change-Id: I2af7a807c99df75ea659e6e6acc9c4fca6a56274
diff --git a/camera/ProCamera.cpp b/camera/ProCamera.cpp
new file mode 100644
index 0000000..134a4a3
--- /dev/null
+++ b/camera/ProCamera.cpp
@@ -0,0 +1,230 @@
+/*
+**
+** Copyright (C) 2013, 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 "ProCamera"
+#include <utils/Log.h>
+#include <utils/threads.h>
+#include <utils/Mutex.h>
+
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+#include <binder/IMemory.h>
+
+#include <camera/ProCamera.h>
+#include <camera/ICameraService.h>
+#include <camera/IProCameraUser.h>
+#include <camera/IProCameraCallbacks.h>
+
+#include <gui/IGraphicBufferProducer.h>
+#include <gui/Surface.h>
+
+namespace android {
+
+// client singleton for camera service binder interface
+Mutex ProCamera::mLock;
+sp<ICameraService> ProCamera::mCameraService;
+sp<ProCamera::DeathNotifier> ProCamera::mDeathNotifier;
+
+// establish binder interface to camera service
+const sp<ICameraService>& ProCamera::getCameraService()
+{
+ Mutex::Autolock _l(mLock);
+ if (mCameraService.get() == 0) {
+ sp<IServiceManager> sm = defaultServiceManager();
+ sp<IBinder> binder;
+ do {
+ binder = sm->getService(String16("media.camera"));
+ if (binder != 0)
+ break;
+ ALOGW("CameraService not published, waiting...");
+ usleep(500000); // 0.5 s
+ } while(true);
+ if (mDeathNotifier == NULL) {
+ mDeathNotifier = new DeathNotifier();
+ }
+ binder->linkToDeath(mDeathNotifier);
+ mCameraService = interface_cast<ICameraService>(binder);
+ }
+ ALOGE_IF(mCameraService==0, "no CameraService!?");
+ return mCameraService;
+}
+
+sp<ProCamera> ProCamera::connect(int cameraId)
+{
+ ALOGV("connect");
+ sp<ProCamera> c = new ProCamera();
+ sp<IProCameraCallbacks> cl = c;
+ const sp<ICameraService>& cs = getCameraService();
+ if (cs != 0) {
+ c->mCamera = cs->connect(cl, cameraId);
+ }
+ if (c->mCamera != 0) {
+ c->mCamera->asBinder()->linkToDeath(c);
+ c->mStatus = NO_ERROR;
+ } else {
+ c.clear();
+ }
+ return c;
+}
+
+void ProCamera::disconnect()
+{
+ ALOGV("disconnect");
+ if (mCamera != 0) {
+ mCamera->disconnect();
+ mCamera->asBinder()->unlinkToDeath(this);
+ mCamera = 0;
+ }
+}
+
+ProCamera::ProCamera()
+{
+}
+
+ProCamera::~ProCamera()
+{
+
+}
+
+sp<IProCameraUser> ProCamera::remote()
+{
+ return mCamera;
+}
+
+void ProCamera::binderDied(const wp<IBinder>& who) {
+ ALOGW("IProCameraUser died");
+ notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_SERVER_DIED, 0);
+}
+
+void ProCamera::DeathNotifier::binderDied(const wp<IBinder>& who) {
+ ALOGV("binderDied");
+ Mutex::Autolock _l(ProCamera::mLock);
+ ProCamera::mCameraService.clear();
+ ALOGW("Camera service died!");
+}
+
+
+// callback from camera service
+void ProCamera::notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
+{
+ sp<ProCameraListener> listener;
+ {
+ Mutex::Autolock _l(mLock);
+ listener = mListener;
+ }
+ if (listener != NULL) {
+ listener->notify(msgType, ext1, ext2);
+ }
+}
+
+// callback from camera service when frame or image is ready
+void ProCamera::dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
+ camera_frame_metadata_t *metadata)
+{
+ sp<ProCameraListener> listener;
+ {
+ Mutex::Autolock _l(mLock);
+ listener = mListener;
+ }
+ if (listener != NULL) {
+ listener->postData(msgType, dataPtr, metadata);
+ }
+}
+
+// callback from camera service when timestamped frame is ready
+void ProCamera::dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
+ const sp<IMemory>& dataPtr)
+{
+ sp<ProCameraListener> listener;
+ {
+ Mutex::Autolock _l(mLock);
+ listener = mListener;
+ }
+ if (listener != NULL) {
+ listener->postDataTimestamp(timestamp, msgType, dataPtr);
+ } else {
+ ALOGW("No listener was set. Drop a recording frame.");
+ }
+}
+
+/* IProCameraUser's implementation */
+
+status_t ProCamera::exclusiveTryLock()
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->exclusiveTryLock();
+}
+status_t ProCamera::exclusiveLock()
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->exclusiveLock();
+}
+status_t ProCamera::exclusiveUnlock()
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->exclusiveUnlock();
+}
+bool ProCamera::hasExclusiveLock()
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->hasExclusiveLock();
+}
+
+// Note that the callee gets a copy of the metadata.
+int ProCamera::submitRequest(const struct camera_metadata* metadata,
+ bool streaming)
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->submitRequest(const_cast<struct camera_metadata*>(metadata),
+ streaming);
+}
+
+status_t ProCamera::cancelRequest(int requestId)
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->cancelRequest(requestId);
+}
+
+status_t ProCamera::requestStream(int streamId)
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->requestStream(streamId);
+}
+status_t ProCamera::cancelStream(int streamId)
+{
+ sp <IProCameraUser> c = mCamera;
+ if (c == 0) return NO_INIT;
+
+ return c->cancelStream(streamId);
+}
+
+}; // namespace android