1 files changed, 396 insertions, 0 deletions
diff --git a/services/camera/libcameraservice/ProCamera2Client.cpp b/services/camera/libcameraservice/ProCamera2Client.cpp
new file mode 100644
index 0000000..d6389a1
--- /dev/null
+++ b/services/camera/libcameraservice/ProCamera2Client.cpp
@@ -0,0 +1,396 @@
+/*
+ * 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_TAG "ProCamera2Client"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+
+#include <utils/Log.h>
+#include <utils/Trace.h>
+
+#include <cutils/properties.h>
+#include <gui/Surface.h>
+#include <gui/Surface.h>
+#include "camera2/Parameters.h"
+#include "ProCamera2Client.h"
+
+namespace android {
+using namespace camera2;
+
+static int getCallingPid() {
+    return IPCThreadState::self()->getCallingPid();
+}
+
+static int getCallingUid() {
+    return IPCThreadState::self()->getCallingUid();
+}
+
+// Interface used by CameraService
+
+ProCamera2Client::ProCamera2Client(const sp<CameraService>& cameraService,
+        const sp<IProCameraCallbacks>& remoteCallback,
+        int cameraId,
+        int cameraFacing,
+        int clientPid,
+        int servicePid):
+        ProClient(cameraService, remoteCallback,
+                cameraId, cameraFacing, clientPid, servicePid),
+        mSharedCameraCallbacks(remoteCallback)
+{
+    ATRACE_CALL();
+    ALOGI("ProCamera %d: Opened", cameraId);
+
+    mDevice = new Camera2Device(cameraId);
+
+    mExclusiveLock = false;
+}
+
+status_t ProCamera2Client::checkPid(const char* checkLocation) const {
+    int callingPid = getCallingPid();
+    if (callingPid == mClientPid) return NO_ERROR;
+
+    ALOGE("%s: attempt to use a locked camera from a different process"
+            " (old pid %d, new pid %d)", checkLocation, mClientPid, callingPid);
+    return PERMISSION_DENIED;
+}
+
+status_t ProCamera2Client::initialize(camera_module_t *module)
+{
+    ATRACE_CALL();
+    ALOGV("%s: Initializing client for camera %d", __FUNCTION__, mCameraId);
+    status_t res;
+
+    res = mDevice->initialize(module);
+    if (res != OK) {
+        ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
+                __FUNCTION__, mCameraId, strerror(-res), res);
+        return NO_INIT;
+    }
+
+    res = mDevice->setNotifyCallback(this);
+
+    return OK;
+}
+
+ProCamera2Client::~ProCamera2Client() {
+    ATRACE_CALL();
+
+    mDestructionStarted = true;
+
+    disconnect();
+
+    ALOGI("ProCamera %d: Closed", mCameraId);
+}
+
+status_t ProCamera2Client::exclusiveTryLock() {
+    ATRACE_CALL();
+    ALOGV("%s", __FUNCTION__);
+
+    Mutex::Autolock icl(mIProCameraUserLock);
+    SharedCameraCallbacks::Lock l(mSharedCameraCallbacks);
+
+    if (!mExclusiveLock) {
+        mExclusiveLock = true;
+
+        if (mRemoteCallback != NULL) {
+            mRemoteCallback->onLockStatusChanged(
+                              IProCameraCallbacks::LOCK_ACQUIRED);
+        }
+
+        ALOGV("%s: exclusive lock acquired", __FUNCTION__);
+
+        return OK;
+    }
+
+    // TODO: have a PERMISSION_DENIED case for when someone else owns the lock
+
+    // don't allow recursive locking
+    ALOGW("%s: exclusive lock already exists - recursive locking is not"
+          "allowed", __FUNCTION__);
+
+    return ALREADY_EXISTS;
+}
+
+status_t ProCamera2Client::exclusiveLock() {
+    ATRACE_CALL();
+    ALOGV("%s", __FUNCTION__);
+
+    Mutex::Autolock icl(mIProCameraUserLock);
+    SharedCameraCallbacks::Lock l(mSharedCameraCallbacks);
+
+    /**
+     * TODO: this should asynchronously 'wait' until the lock becomes available
+     * if another client already has an exclusive lock.
+     *
+     * once we have proper sharing support this will need to do
+     * more than just return immediately
+     */
+    if (!mExclusiveLock) {
+        mExclusiveLock = true;
+
+        if (mRemoteCallback != NULL) {
+            mRemoteCallback->onLockStatusChanged(IProCameraCallbacks::LOCK_ACQUIRED);
+        }
+
+        ALOGV("%s: exclusive lock acquired", __FUNCTION__);
+
+        return OK;
+    }
+
+    // don't allow recursive locking
+    ALOGW("%s: exclusive lock already exists - recursive locking is not allowed"
+                                                                , __FUNCTION__);
+    return ALREADY_EXISTS;
+}
+
+status_t ProCamera2Client::exclusiveUnlock() {
+    ATRACE_CALL();
+    ALOGV("%s", __FUNCTION__);
+
+    Mutex::Autolock icl(mIProCameraUserLock);
+    SharedCameraCallbacks::Lock l(mSharedCameraCallbacks);
+
+    // don't allow unlocking if we have no lock
+    if (!mExclusiveLock) {
+        ALOGW("%s: cannot unlock, no lock was held in the first place",
+              __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    mExclusiveLock = false;
+    if (mRemoteCallback != NULL ) {
+        mRemoteCallback->onLockStatusChanged(
+                                       IProCameraCallbacks::LOCK_RELEASED);
+    }
+    ALOGV("%s: exclusive lock released", __FUNCTION__);
+
+    return OK;
+}
+
+bool ProCamera2Client::hasExclusiveLock() {
+    return mExclusiveLock;
+}
+
+status_t ProCamera2Client::submitRequest(camera_metadata_t* request,
+                                         bool streaming) {
+    ATRACE_CALL();
+    ALOGV("%s", __FUNCTION__);
+
+    Mutex::Autolock icl(mIProCameraUserLock);
+    if (!mExclusiveLock) {
+        return PERMISSION_DENIED;
+    }
+
+    ALOGE("%s: not fully implemented yet", __FUNCTION__);
+    free_camera_metadata(request);
+    return OK;
+}
+
+status_t ProCamera2Client::cancelRequest(int requestId) {
+    ATRACE_CALL();
+    ALOGV("%s", __FUNCTION__);
+
+    Mutex::Autolock icl(mIProCameraUserLock);
+    if (!mExclusiveLock) {
+        return PERMISSION_DENIED;
+    }
+
+    ALOGE("%s: not fully implemented yet", __FUNCTION__);
+    return OK;
+}
+
+status_t ProCamera2Client::requestStream(int streamId) {
+    ALOGE("%s: not implemented yet", __FUNCTION__);
+
+    return INVALID_OPERATION;
+}
+
+status_t ProCamera2Client::cancelStream(int streamId) {
+    ALOGE("%s: not implemented yet", __FUNCTION__);
+
+    return INVALID_OPERATION;
+}
+
+status_t ProCamera2Client::createStream(int width, int height, int format,
+                                        const sp<Surface>& surface,
+                                        /*out*/
+                                        int* streamId) {
+    ALOGE("%s: not implemented yet", __FUNCTION__);
+
+    return INVALID_OPERATION;
+}
+
+status_t ProCamera2Client::createDefaultRequest(int templateId,
+                                               /*out*/
+                                               camera_metadata** request) {
+    ALOGE("%s: not implemented yet", __FUNCTION__);
+
+    return INVALID_OPERATION;
+}
+
+
+
+
+
+status_t ProCamera2Client::dump(int fd, const Vector<String16>& args) {
+    String8 result;
+    result.appendFormat("ProCamera2Client[%d] (%p) PID: %d, dump:\n",
+            mCameraId,
+            getRemoteCallback()->asBinder().get(),
+            mClientPid);
+    result.append("  State: ");
+
+    // TODO: print dynamic/request section from most recent requests
+
+#define CASE_APPEND_ENUM(x) case x: result.append(#x "\n"); break;
+
+    result = "  Device dump:\n";
+    write(fd, result.string(), result.size());
+
+    status_t res = mDevice->dump(fd, args);
+    if (res != OK) {
+        result = String8::format("   Error dumping device: %s (%d)",
+                strerror(-res), res);
+        write(fd, result.string(), result.size());
+    }
+
+#undef CASE_APPEND_ENUM
+    return NO_ERROR;
+}
+
+// IProCameraUser interface
+
+void ProCamera2Client::disconnect() {
+    ATRACE_CALL();
+    Mutex::Autolock icl(mIProCameraUserLock);
+    status_t res;
+
+    // Allow both client and the media server to disconnect at all times
+    int callingPid = getCallingPid();
+    if (callingPid != mClientPid && callingPid != mServicePid) return;
+
+    if (mDevice == 0) return;
+
+    ALOGV("Camera %d: Shutting down", mCameraId);
+    ALOGV("Camera %d: Waiting for threads", mCameraId);
+    ALOGV("Camera %d: Disconnecting device", mCameraId);
+
+    mDevice->disconnect();
+
+    mDevice.clear();
+
+    ProClient::disconnect();
+}
+
+status_t ProCamera2Client::connect(const sp<IProCameraCallbacks>& client) {
+    ATRACE_CALL();
+    ALOGV("%s: E", __FUNCTION__);
+    Mutex::Autolock icl(mIProCameraUserLock);
+
+    if (mClientPid != 0 && getCallingPid() != mClientPid) {
+        ALOGE("%s: Camera %d: Connection attempt from pid %d; "
+                "current locked to pid %d", __FUNCTION__,
+                mCameraId, getCallingPid(), mClientPid);
+        return BAD_VALUE;
+    }
+
+    mClientPid = getCallingPid();
+
+    mRemoteCallback = client;
+    mSharedCameraCallbacks = client;
+
+    return OK;
+}
+
+/** Device-related methods */
+
+void ProCamera2Client::notifyError(int errorCode, int arg1, int arg2) {
+    ALOGE("Error condition %d reported by HAL, arguments %d, %d", errorCode,
+                                                                    arg1, arg2);
+}
+
+void ProCamera2Client::notifyShutter(int frameNumber, nsecs_t timestamp) {
+    ALOGV("%s: Shutter notification for frame %d at time %lld", __FUNCTION__,
+            frameNumber, timestamp);
+}
+
+void ProCamera2Client::notifyAutoFocus(uint8_t newState, int triggerId) {
+    ALOGV("%s: Autofocus state now %d, last trigger %d",
+            __FUNCTION__, newState, triggerId);
+
+    SharedCameraCallbacks::Lock l(mSharedCameraCallbacks);
+    if (l.mRemoteCallback != 0) {
+        l.mRemoteCallback->notifyCallback(CAMERA_MSG_FOCUS_MOVE,
+                1, 0);
+    }
+    if (l.mRemoteCallback != 0) {
+        l.mRemoteCallback->notifyCallback(CAMERA_MSG_FOCUS,
+                1, 0);
+    }
+}
+
+void ProCamera2Client::notifyAutoExposure(uint8_t newState, int triggerId) {
+    ALOGV("%s: Autoexposure state now %d, last trigger %d",
+            __FUNCTION__, newState, triggerId);
+}
+
+void ProCamera2Client::notifyAutoWhitebalance(uint8_t newState, int triggerId) {
+    ALOGV("%s: Auto-whitebalance state now %d, last trigger %d",
+            __FUNCTION__, newState, triggerId);
+}
+
+int ProCamera2Client::getCameraId() const {
+    return mCameraId;
+}
+
+const sp<Camera2Device>& ProCamera2Client::getCameraDevice() {
+    return mDevice;
+}
+
+const sp<CameraService>& ProCamera2Client::getCameraService() {
+    return mCameraService;
+}
+
+ProCamera2Client::SharedCameraCallbacks::Lock::Lock(
+                                                 SharedCameraCallbacks &client):
+        mRemoteCallback(client.mRemoteCallback),
+        mSharedClient(client) {
+    mSharedClient.mRemoteCallbackLock.lock();
+}
+
+ProCamera2Client::SharedCameraCallbacks::Lock::~Lock() {
+    mSharedClient.mRemoteCallbackLock.unlock();
+}
+
+ProCamera2Client::SharedCameraCallbacks::SharedCameraCallbacks
+                                         (const sp<IProCameraCallbacks>&client):
+        mRemoteCallback(client) {
+}
+
+ProCamera2Client::SharedCameraCallbacks&
+                             ProCamera2Client::SharedCameraCallbacks::operator=(
+        const sp<IProCameraCallbacks>&client) {
+    Mutex::Autolock l(mRemoteCallbackLock);
+    mRemoteCallback = client;
+    return *this;
+}
+
+void ProCamera2Client::SharedCameraCallbacks::clear() {
+    Mutex::Autolock l(mRemoteCallbackLock);
+    mRemoteCallback.clear();
+}
+
+} // namespace android