--- /dev/null
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/*
+ * Contains implementation of a class EmulatedQemuCameraDevice that encapsulates
+ * an emulated camera device connected to the host.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera_QemuDevice"
+#include <cutils/log.h>
+#include "EmulatedQemuCamera.h"
+#include "EmulatedQemuCameraDevice.h"
+
+namespace android {
+
+EmulatedQemuCameraDevice::EmulatedQemuCameraDevice(EmulatedQemuCamera* camera_hal)
+ : EmulatedCameraDevice(camera_hal),
+ mQemuClient(),
+ mPreviewFrame(NULL)
+{
+}
+
+EmulatedQemuCameraDevice::~EmulatedQemuCameraDevice()
+{
+ if (mPreviewFrame != NULL) {
+ delete[] mPreviewFrame;
+ }
+}
+
+/****************************************************************************
+ * Public API
+ ***************************************************************************/
+
+status_t EmulatedQemuCameraDevice::Initialize(const char* device_name)
+{
+ /* Connect to the service. */
+ char connect_str[256];
+ snprintf(connect_str, sizeof(connect_str), "name=%s", device_name);
+ status_t res = mQemuClient.connectClient(connect_str);
+ if (res != NO_ERROR) {
+ return res;
+ }
+
+ /* Initialize base class. */
+ res = EmulatedCameraDevice::Initialize();
+ if (res == NO_ERROR) {
+ ALOGV("%s: Connected to the emulated camera service '%s'",
+ __FUNCTION__, device_name);
+ mDeviceName = device_name;
+ } else {
+ mQemuClient.queryDisconnect();
+ }
+
+ return res;
+}
+
+/****************************************************************************
+ * Emulated camera device abstract interface implementation.
+ ***************************************************************************/
+
+status_t EmulatedQemuCameraDevice::connectDevice()
+{
+ ALOGV("%s", __FUNCTION__);
+
+ Mutex::Autolock locker(&mObjectLock);
+ if (!isInitialized()) {
+ ALOGE("%s: Qemu camera device is not initialized.", __FUNCTION__);
+ return EINVAL;
+ }
+ if (isConnected()) {
+ ALOGW("%s: Qemu camera device '%s' is already connected.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return NO_ERROR;
+ }
+
+ /* Connect to the camera device via emulator. */
+ const status_t res = mQemuClient.queryConnect();
+ if (res == NO_ERROR) {
+ ALOGV("%s: Connected to device '%s'",
+ __FUNCTION__, (const char*)mDeviceName);
+ mState = ECDS_CONNECTED;
+ } else {
+ ALOGE("%s: Connection to device '%s' failed",
+ __FUNCTION__, (const char*)mDeviceName);
+ }
+
+ return res;
+}
+
+status_t EmulatedQemuCameraDevice::disconnectDevice()
+{
+ ALOGV("%s", __FUNCTION__);
+
+ Mutex::Autolock locker(&mObjectLock);
+ if (!isConnected()) {
+ ALOGW("%s: Qemu camera device '%s' is already disconnected.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return NO_ERROR;
+ }
+ if (isStarted()) {
+ ALOGE("%s: Cannot disconnect from the started device '%s.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return EINVAL;
+ }
+
+ /* Disconnect from the camera device via emulator. */
+ const status_t res = mQemuClient.queryDisconnect();
+ if (res == NO_ERROR) {
+ ALOGV("%s: Disonnected from device '%s'",
+ __FUNCTION__, (const char*)mDeviceName);
+ mState = ECDS_INITIALIZED;
+ } else {
+ ALOGE("%s: Disconnection from device '%s' failed",
+ __FUNCTION__, (const char*)mDeviceName);
+ }
+
+ return res;
+}
+
+status_t EmulatedQemuCameraDevice::startDevice(int width,
+ int height,
+ uint32_t pix_fmt)
+{
+ ALOGV("%s", __FUNCTION__);
+
+ Mutex::Autolock locker(&mObjectLock);
+ if (!isConnected()) {
+ ALOGE("%s: Qemu camera device '%s' is not connected.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return EINVAL;
+ }
+ if (isStarted()) {
+ ALOGW("%s: Qemu camera device '%s' is already started.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return NO_ERROR;
+ }
+
+ status_t res = EmulatedCameraDevice::commonStartDevice(width, height, pix_fmt);
+ if (res != NO_ERROR) {
+ ALOGE("%s: commonStartDevice failed", __FUNCTION__);
+ return res;
+ }
+
+ /* Allocate preview frame buffer. */
+ /* TODO: Watch out for preview format changes! At this point we implement
+ * RGB32 only.*/
+ mPreviewFrame = new uint32_t[mTotalPixels];
+ if (mPreviewFrame == NULL) {
+ ALOGE("%s: Unable to allocate %d bytes for preview frame",
+ __FUNCTION__, mTotalPixels);
+ return ENOMEM;
+ }
+
+ /* Start the actual camera device. */
+ res = mQemuClient.queryStart(mPixelFormat, mFrameWidth, mFrameHeight);
+ if (res == NO_ERROR) {
+ ALOGV("%s: Qemu camera device '%s' is started for %.4s[%dx%d] frames",
+ __FUNCTION__, (const char*)mDeviceName,
+ reinterpret_cast<const char*>(&mPixelFormat),
+ mFrameWidth, mFrameHeight);
+ mState = ECDS_STARTED;
+ } else {
+ ALOGE("%s: Unable to start device '%s' for %.4s[%dx%d] frames",
+ __FUNCTION__, (const char*)mDeviceName,
+ reinterpret_cast<const char*>(&pix_fmt), width, height);
+ }
+
+ return res;
+}
+
+status_t EmulatedQemuCameraDevice::stopDevice()
+{
+ ALOGV("%s", __FUNCTION__);
+
+ Mutex::Autolock locker(&mObjectLock);
+ if (!isStarted()) {
+ ALOGW("%s: Qemu camera device '%s' is not started.",
+ __FUNCTION__, (const char*)mDeviceName);
+ return NO_ERROR;
+ }
+
+ /* Stop the actual camera device. */
+ status_t res = mQemuClient.queryStop();
+ if (res == NO_ERROR) {
+ if (mPreviewFrame == NULL) {
+ delete[] mPreviewFrame;
+ mPreviewFrame = NULL;
+ }
+ EmulatedCameraDevice::commonStopDevice();
+ mState = ECDS_CONNECTED;
+ ALOGV("%s: Qemu camera device '%s' is stopped",
+ __FUNCTION__, (const char*)mDeviceName);
+ } else {
+ ALOGE("%s: Unable to stop device '%s'",
+ __FUNCTION__, (const char*)mDeviceName);
+ }
+
+ return res;
+}
+
+/****************************************************************************
+ * EmulatedCameraDevice virtual overrides
+ ***************************************************************************/
+
+status_t EmulatedQemuCameraDevice::getCurrentPreviewFrame(void* buffer)
+{
+ ALOGW_IF(mPreviewFrame == NULL, "%s: No preview frame", __FUNCTION__);
+ if (mPreviewFrame != NULL) {
+ memcpy(buffer, mPreviewFrame, mTotalPixels * 4);
+ return 0;
+ } else {
+ return EmulatedCameraDevice::getCurrentPreviewFrame(buffer);
+ }
+}
+
+/****************************************************************************
+ * Worker thread management overrides.
+ ***************************************************************************/
+
+bool EmulatedQemuCameraDevice::inWorkerThread()
+{
+ /* Wait till FPS timeout expires, or thread exit message is received. */
+ WorkerThread::SelectRes res =
+ getWorkerThread()->Select(-1, 1000000 / mEmulatedFPS);
+ if (res == WorkerThread::EXIT_THREAD) {
+ ALOGV("%s: Worker thread has been terminated.", __FUNCTION__);
+ return false;
+ }
+
+ /* Query frames from the service. */
+ status_t query_res = mQemuClient.queryFrame(mCurrentFrame, mPreviewFrame,
+ mFrameBufferSize,
+ mTotalPixels * 4,
+ mWhiteBalanceScale[0],
+ mWhiteBalanceScale[1],
+ mWhiteBalanceScale[2],
+ mExposureCompensation);
+ if (query_res == NO_ERROR) {
+ /* Timestamp the current frame, and notify the camera HAL. */
+ mCurFrameTimestamp = systemTime(SYSTEM_TIME_MONOTONIC);
+ mCameraHAL->onNextFrameAvailable(mCurrentFrame, mCurFrameTimestamp, this);
+ return true;
+ } else {
+ ALOGE("%s: Unable to get current video frame: %s",
+ __FUNCTION__, strerror(query_res));
+ mCameraHAL->onCameraDeviceError(CAMERA_ERROR_SERVER_DIED);
+ return false;
+ }
+}
+
+}; /* namespace android */
Code Review / iec.git / blobdiff