camera_client: refactor Camera/ProCamera commonalities into BasicCamera
Change-Id: Ie10a4094522d49683657665fe94ab0b7ccd280e9
diff --git a/camera/CameraBase.cpp b/camera/CameraBase.cpp
new file mode 100644
index 0000000..9b0e6bf
--- /dev/null
+++ b/camera/CameraBase.cpp
@@ -0,0 +1,237 @@
+/*
+**
+** 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 "CameraBase"
+#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/CameraBase.h>
+#include <camera/ICameraService.h>
+
+// needed to instantiate
+#include <camera/ProCamera.h>
+#include <camera/Camera.h>
+
+#include <system/camera_metadata.h>
+
+namespace android {
+
+namespace {
+ sp<ICameraService> gCameraService;
+ const int kCameraServicePollDelay = 500000; // 0.5s
+ const char* kCameraServiceName = "media.camera";
+
+ Mutex gLock;
+
+ class DeathNotifier : public IBinder::DeathRecipient
+ {
+ public:
+ DeathNotifier() {
+ }
+
+ virtual void binderDied(const wp<IBinder>& who) {
+ ALOGV("binderDied");
+ Mutex::Autolock _l(gLock);
+ gCameraService.clear();
+ ALOGW("Camera service died!");
+ }
+ };
+
+ sp<DeathNotifier> gDeathNotifier;
+}; // namespace anonymous
+
+///////////////////////////////////////////////////////////
+// CameraBase definition
+///////////////////////////////////////////////////////////
+
+// establish binder interface to camera service
+template <typename TCam, typename TCamTraits>
+const sp<ICameraService>& CameraBase<TCam, TCamTraits>::getCameraService()
+{
+ Mutex::Autolock _l(gLock);
+ if (gCameraService.get() == 0) {
+ sp<IServiceManager> sm = defaultServiceManager();
+ sp<IBinder> binder;
+ do {
+ binder = sm->getService(String16(kCameraServiceName));
+ if (binder != 0) {
+ break;
+ }
+ ALOGW("CameraService not published, waiting...");
+ usleep(kCameraServicePollDelay);
+ } while(true);
+ if (gDeathNotifier == NULL) {
+ gDeathNotifier = new DeathNotifier();
+ }
+ binder->linkToDeath(gDeathNotifier);
+ gCameraService = interface_cast<ICameraService>(binder);
+ }
+ ALOGE_IF(gCameraService == 0, "no CameraService!?");
+ return gCameraService;
+}
+
+template <typename TCam, typename TCamTraits>
+sp<TCam> CameraBase<TCam, TCamTraits>::connect(int cameraId,
+ const String16& clientPackageName,
+ int clientUid)
+{
+ ALOGV("%s: connect", __FUNCTION__);
+ sp<TCam> c = new TCam(cameraId);
+ sp<TCamCallbacks> cl = c;
+ const sp<ICameraService>& cs = getCameraService();
+ if (cs != 0) {
+ c->mCamera = cs->connect(cl, cameraId, clientPackageName, clientUid);
+ }
+ if (c->mCamera != 0) {
+ c->mCamera->asBinder()->linkToDeath(c);
+ c->mStatus = NO_ERROR;
+ } else {
+ c.clear();
+ }
+ return c;
+}
+
+template <typename TCam, typename TCamTraits>
+void CameraBase<TCam, TCamTraits>::disconnect()
+{
+ ALOGV("%s: disconnect", __FUNCTION__);
+ if (mCamera != 0) {
+ mCamera->disconnect();
+ mCamera->asBinder()->unlinkToDeath(this);
+ mCamera = 0;
+ }
+ ALOGV("%s: disconnect (done)", __FUNCTION__);
+}
+
+template <typename TCam, typename TCamTraits>
+CameraBase<TCam, TCamTraits>::CameraBase(int cameraId) :
+ mStatus(UNKNOWN_ERROR),
+ mCameraId(cameraId)
+{
+}
+
+template <typename TCam, typename TCamTraits>
+CameraBase<TCam, TCamTraits>::~CameraBase()
+{
+}
+
+template <typename TCam, typename TCamTraits>
+sp<typename TCamTraits::TCamUser> CameraBase<TCam, TCamTraits>::remote()
+{
+ return mCamera;
+}
+
+template <typename TCam, typename TCamTraits>
+status_t CameraBase<TCam, TCamTraits>::getStatus()
+{
+ return mStatus;
+}
+
+template <typename TCam, typename TCamTraits>
+void CameraBase<TCam, TCamTraits>::binderDied(const wp<IBinder>& who) {
+ ALOGW("mediaserver's remote binder Camera object died");
+ notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_SERVER_DIED, /*ext2*/0);
+}
+
+template <typename TCam, typename TCamTraits>
+void CameraBase<TCam, TCamTraits>::setListener(const sp<TCamListener>& listener)
+{
+ Mutex::Autolock _l(mLock);
+ mListener = listener;
+}
+
+// callback from camera service
+template <typename TCam, typename TCamTraits>
+void CameraBase<TCam, TCamTraits>::notifyCallback(int32_t msgType,
+ int32_t ext1,
+ int32_t ext2)
+{
+ sp<TCamListener> 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
+template <typename TCam, typename TCamTraits>
+void CameraBase<TCam, TCamTraits>::dataCallback(int32_t msgType,
+ const sp<IMemory>& dataPtr,
+ camera_frame_metadata *metadata)
+{
+ sp<TCamListener> listener;
+ {
+ Mutex::Autolock _l(mLock);
+ listener = mListener;
+ }
+ if (listener != NULL) {
+ listener->postData(msgType, dataPtr, metadata);
+ }
+}
+
+// callback from camera service when timestamped frame is ready
+template <typename TCam, typename TCamTraits>
+bool CameraBase<TCam, TCamTraits>::dataCallbackTimestamp(nsecs_t timestamp,
+ int32_t msgType,
+ const sp<IMemory>& dataPtr)
+{
+ sp<TCamListener> listener;
+ {
+ Mutex::Autolock _l(mLock);
+ listener = mListener;
+ }
+ if (listener != NULL) {
+ listener->postDataTimestamp(timestamp, msgType, dataPtr);
+ return true;
+ }
+
+ return false;
+}
+
+template <typename TCam, typename TCamTraits>
+int CameraBase<TCam, TCamTraits>::getNumberOfCameras() {
+ const sp<ICameraService> cs = getCameraService();
+
+ if (!cs.get()) {
+ // as required by the public Java APIs
+ return 0;
+ }
+ return cs->getNumberOfCameras();
+}
+
+// this can be in BaseCamera but it should be an instance method
+template <typename TCam, typename TCamTraits>
+status_t CameraBase<TCam, TCamTraits>::getCameraInfo(int cameraId,
+ struct CameraInfo* cameraInfo) {
+ const sp<ICameraService>& cs = getCameraService();
+ if (cs == 0) return UNKNOWN_ERROR;
+ return cs->getCameraInfo(cameraId, cameraInfo);
+}
+
+template class CameraBase<ProCamera>;
+template class CameraBase<Camera>;
+
+} // namespace android