Add skeleton implementation of a fake v2 camera device.

Change-Id: Idd2485064548a6036ea318680065b7429463d9cd

tools/emulator/system/camera/Android.mk

@@ -35,9 +35,10 @@ LOCAL_SHARED_LIBRARIES += \
 	libandroid_runtime \
 
 LOCAL_C_INCLUDES += external/jpeg \
-					external/skia/include/core/ \
-					frameworks/native/include/media/hardware \
-					frameworks/base/core/jni/android/graphics
+	external/skia/include/core/ \
+	frameworks/native/include/media/hardware \
+	frameworks/base/core/jni/android/graphics \
+	$(call include-path-for, camera)
 
 LOCAL_SRC_FILES := \
 	EmulatedCameraHal.cpp \
@@ -53,7 +54,10 @@ LOCAL_SRC_FILES := \
 	PreviewWindow.cpp \
 	CallbackNotifier.cpp \
 	QemuClient.cpp \
-	JpegCompressor.cpp
+	JpegCompressor.cpp \
+    EmulatedCamera2.cpp \
+	EmulatedFakeCamera2.cpp \
+	EmulatedQemuCamera2.cpp
 
 ifeq ($(TARGET_PRODUCT),vbox_x86)
 LOCAL_MODULE := camera.vbox_x86

tools/emulator/system/camera/EmulatedCamera2.cpp

@@ -0,0 +1,528 @@
+/*
+ * Copyright (C) 2012 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 EmulatedCamera that encapsulates
+ * functionality common to all version 2.0 emulated camera devices.  Instances
+ * of this class (for each emulated camera) are created during the construction
+ * of the EmulatedCameraFactory instance.  This class serves as an entry point
+ * for all camera API calls that defined by camera2_device_ops_t API.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera2_Camera"
+#include <cutils/log.h>
+
+#include "EmulatedCamera2.h"
+#include "system/camera_metadata.h"
+
+namespace android {
+
+/* Constructs EmulatedCamera2 instance.
+ * Param:
+ *  cameraId - Zero based camera identifier, which is an index of the camera
+ *      instance in camera factory's array.
+ *  module - Emulated camera HAL module descriptor.
+ */
+EmulatedCamera2::EmulatedCamera2(int cameraId,
+        struct hw_module_t* module):
+        EmulatedBaseCamera(cameraId,
+                CAMERA_DEVICE_API_VERSION_2_0,
+                &common,
+                module)
+{
+    common.close = EmulatedCamera2::close;
+    ops = &sDeviceOps;
+    priv = this;
+
+    mRequestQueueDstOps.notify_queue_not_empty =
+            EmulatedCamera2::request_queue_notify_queue_not_empty;
+    mRequestQueueDstOps.parent                 = this;
+
+    mRequestQueueDstOps.notify_queue_not_empty =
+            EmulatedCamera2::reprocess_queue_notify_queue_not_empty;
+    mReprocessQueueDstOps.parent               = this;
+
+    mFrameQueueSrcOps.buffer_count = EmulatedCamera2::frame_queue_buffer_count;
+    mFrameQueueSrcOps.dequeue      = EmulatedCamera2::frame_queue_dequeue;
+    mFrameQueueSrcOps.free         = EmulatedCamera2::frame_queue_free;
+    mFrameQueueSrcOps.parent       = this;
+
+    mReprocessStreamOps.dequeue_buffer =
+            EmulatedCamera2::reprocess_stream_dequeue_buffer;
+    mReprocessStreamOps.enqueue_buffer =
+            EmulatedCamera2::reprocess_stream_enqueue_buffer;
+    mReprocessStreamOps.cancel_buffer =
+            EmulatedCamera2::reprocess_stream_cancel_buffer;
+    mReprocessStreamOps.set_buffer_count =
+            EmulatedCamera2::reprocess_stream_set_buffer_count;
+    mReprocessStreamOps.set_crop = EmulatedCamera2::reprocess_stream_set_crop;
+    mReprocessStreamOps.set_timestamp =
+            EmulatedCamera2::reprocess_stream_set_timestamp;
+    mReprocessStreamOps.set_usage = EmulatedCamera2::reprocess_stream_set_usage;
+    mReprocessStreamOps.get_min_undequeued_buffer_count =
+            EmulatedCamera2::reprocess_stream_get_min_undequeued_buffer_count;
+    mReprocessStreamOps.lock_buffer =
+            EmulatedCamera2::reprocess_stream_lock_buffer;
+    mReprocessStreamOps.parent   = this;
+
+    mVendorTagOps.get_camera_vendor_section_name =
+            EmulatedCamera2::get_camera_vendor_section_name;
+    mVendorTagOps.get_camera_vendor_tag_name =
+            EmulatedCamera2::get_camera_vendor_tag_name;
+    mVendorTagOps.get_camera_vendor_tag_type =
+            EmulatedCamera2::get_camera_vendor_tag_type;
+    mVendorTagOps.parent = this;
+}
+
+/* Destructs EmulatedCamera2 instance. */
+EmulatedCamera2::~EmulatedCamera2() {
+}
+
+/****************************************************************************
+ * Abstract API
+ ***************************************************************************/
+
+/****************************************************************************
+ * Public API
+ ***************************************************************************/
+
+status_t EmulatedCamera2::Initialize() {
+    return NO_ERROR;
+}
+
+/****************************************************************************
+ * Camera API implementation
+ ***************************************************************************/
+
+status_t EmulatedCamera2::connectCamera(hw_device_t** device) {
+    return NO_ERROR;
+}
+
+status_t EmulatedCamera2::closeCamera() {
+    return NO_ERROR;
+}
+
+status_t EmulatedCamera2::getCameraInfo(struct camera_info* info) {
+
+    return EmulatedBaseCamera::getCameraInfo(info);
+}
+
+/****************************************************************************
+ * Camera API implementation.
+ * These methods are called from the camera API callback routines.
+ ***************************************************************************/
+
+/** Request input queue */
+
+int EmulatedCamera2::setRequestQueueSrcOps(
+    camera2_metadata_queue_src_ops *request_queue_src_ops) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::requestQueueNotifyNotEmpty() {
+    return NO_ERROR;
+}
+
+/** Reprocessing input queue */
+
+int EmulatedCamera2::setReprocessQueueSrcOps(
+    camera2_metadata_queue_src_ops *reprocess_queue_src_ops) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessQueueNotifyNotEmpty() {
+    return NO_ERROR;
+}
+
+/** Frame output queue */
+
+int EmulatedCamera2::setFrameQueueDstOps(camera2_metadata_queue_dst_ops *frame_queue_dst_ops) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::frameQueueBufferCount() {
+    return NO_ERROR;
+}
+int EmulatedCamera2::frameQueueDequeue(camera_metadata_t **buffer) {
+    return NO_ERROR;
+}
+int EmulatedCamera2::frameQueueFree(camera_metadata_t *old_buffer) {
+    return NO_ERROR;
+}
+
+/** Notifications to application */
+int EmulatedCamera2::setNotifyCallback(camera2_notify_callback notify_cb) {
+    return NO_ERROR;
+}
+
+/** Count of requests in flight */
+int EmulatedCamera2::getInProgressCount() {
+    return NO_ERROR;
+}
+
+/** Cancel all captures in flight */
+int EmulatedCamera2::flushCapturesInProgress() {
+    return NO_ERROR;
+}
+
+/** Reprocessing input stream management */
+int EmulatedCamera2::reprocessStreamDequeueBuffer(buffer_handle_t** buffer,
+        int *stride) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamEnqueueBuffer(buffer_handle_t* buffer) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamCancelBuffer(buffer_handle_t* buffer) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamSetBufferCount(int count) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamSetCrop(int left, int top, int right, int bottom) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamSetTimestamp(int64_t timestamp) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamSetUsage(int usage) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamSetSwapInterval(int interval) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamGetMinUndequeuedBufferCount(int *count) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocessStreamLockBuffer(buffer_handle_t *buffer) {
+    return NO_ERROR;
+}
+
+/** Output stream creation and management */
+
+int EmulatedCamera2::getStreamSlotCount() {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::allocateStream(uint32_t stream_slot,
+        uint32_t width,
+        uint32_t height,
+        int format,
+        camera2_stream_ops_t *stream_ops) {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::releaseStream(uint32_t stream_slot) {
+    return NO_ERROR;
+}
+
+/** Custom tag query methods */
+
+const char* EmulatedCamera2::getVendorSectionName(uint32_t tag) {
+    return NULL;
+}
+
+const char* EmulatedCamera2::getVendorTagName(uint32_t tag) {
+    return NULL;
+}
+
+int EmulatedCamera2::getVendorTagType(uint32_t tag) {
+    return -1;
+}
+
+/** Shutdown and debug methods */
+
+int EmulatedCamera2::release() {
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::dump(int fd) {
+    return NO_ERROR;
+}
+
+/****************************************************************************
+ * Private API.
+ ***************************************************************************/
+
+/****************************************************************************
+ * Camera API callbacks as defined by camera2_device_ops structure.  See
+ * hardware/libhardware/include/hardware/camera2.h for information on each
+ * of these callbacks. Implemented in this class, these callbacks simply
+ * dispatch the call into an instance of EmulatedCamera2 class defined by the
+ * 'camera_device2' parameter.
+ ***************************************************************************/
+
+int EmulatedCamera2::set_request_queue_src_ops(struct camera2_device *d,
+        camera2_metadata_queue_src_ops *queue_src_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->setRequestQueueSrcOps(queue_src_ops);
+}
+
+int EmulatedCamera2::get_request_queue_dst_ops(struct camera2_device *d,
+        camera2_metadata_queue_dst_ops **queue_dst_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    *queue_dst_ops = static_cast<camera2_metadata_queue_dst_ops*>(
+        &ec->mRequestQueueDstOps);
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::request_queue_notify_queue_not_empty(
+        camera2_metadata_queue_dst_ops *q) {
+    EmulatedCamera2* ec = static_cast<QueueDstOps*>(q)->parent;
+    return ec->requestQueueNotifyNotEmpty();
+}
+
+int EmulatedCamera2::set_reprocess_queue_src_ops(struct camera2_device *d,
+        camera2_metadata_queue_src_ops *queue_src_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->setReprocessQueueSrcOps(queue_src_ops);
+}
+
+int EmulatedCamera2::get_reprocess_queue_dst_ops(struct camera2_device *d,
+        camera2_metadata_queue_dst_ops **queue_dst_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    *queue_dst_ops = static_cast<camera2_metadata_queue_dst_ops*>(
+        &ec->mReprocessQueueDstOps);
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocess_queue_notify_queue_not_empty(
+        camera2_metadata_queue_dst_ops *q) {
+    EmulatedCamera2* ec = static_cast<QueueDstOps*>(q)->parent;
+    return ec->reprocessQueueNotifyNotEmpty();
+}
+
+int EmulatedCamera2::set_frame_queue_dst_ops(struct camera2_device *d,
+        camera2_metadata_queue_dst_ops *queue_dst_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->setFrameQueueDstOps(queue_dst_ops);
+}
+
+int EmulatedCamera2::get_frame_queue_src_ops(struct camera2_device *d,
+        camera2_metadata_queue_src_ops **queue_src_ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    *queue_src_ops = static_cast<camera2_metadata_queue_src_ops*>(
+        &ec->mFrameQueueSrcOps);
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::frame_queue_buffer_count(camera2_metadata_queue_src_ops *q) {
+    EmulatedCamera2 *ec = static_cast<QueueSrcOps*>(q)->parent;
+    return ec->frameQueueBufferCount();
+}
+
+int EmulatedCamera2::frame_queue_dequeue(camera2_metadata_queue_src_ops *q,
+        camera_metadata_t **buffer) {
+    EmulatedCamera2 *ec = static_cast<QueueSrcOps*>(q)->parent;
+    return ec->frameQueueDequeue(buffer);
+}
+
+int EmulatedCamera2::frame_queue_free(camera2_metadata_queue_src_ops *q,
+        camera_metadata_t *old_buffer) {
+    EmulatedCamera2 *ec = static_cast<QueueSrcOps*>(q)->parent;
+    return ec->frameQueueFree(old_buffer);
+}
+
+int EmulatedCamera2::set_notify_callback(struct camera2_device *d,
+        camera2_notify_callback notify_cb) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->setNotifyCallback(notify_cb);
+}
+
+int EmulatedCamera2::get_in_progress_count(struct camera2_device *d) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->getInProgressCount();
+}
+
+int EmulatedCamera2::flush_captures_in_progress(struct camera2_device *d) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    return ec->flushCapturesInProgress();
+}
+
+int EmulatedCamera2::get_reprocess_stream_ops(camera2_device_t *d,
+        camera2_stream_ops **stream) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    *stream = static_cast<camera2_stream_ops*>(&ec->mReprocessStreamOps);
+    return NO_ERROR;
+}
+
+int EmulatedCamera2::reprocess_stream_dequeue_buffer(camera2_stream_ops *s,
+        buffer_handle_t** buffer, int *stride) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamDequeueBuffer(buffer, stride);
+}
+
+int EmulatedCamera2::reprocess_stream_enqueue_buffer(camera2_stream_ops *s,
+        buffer_handle_t* buffer) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamEnqueueBuffer(buffer);
+}
+
+int EmulatedCamera2::reprocess_stream_cancel_buffer(camera2_stream_ops *s,
+        buffer_handle_t* buffer) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamCancelBuffer(buffer);
+}
+
+int EmulatedCamera2::reprocess_stream_set_buffer_count(camera2_stream_ops *s,
+        int count) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamSetBufferCount(count);
+}
+
+int EmulatedCamera2::reprocess_stream_set_crop(camera2_stream_ops *s,
+        int left, int top, int right, int bottom) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamSetCrop(left, top, right, bottom);
+}
+
+int EmulatedCamera2::reprocess_stream_set_timestamp(camera2_stream_ops *s,
+        int64_t timestamp) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamSetTimestamp(timestamp);
+}
+
+int EmulatedCamera2::reprocess_stream_set_usage(camera2_stream_ops *s,
+        int usage) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamSetUsage(usage);
+}
+
+int EmulatedCamera2::reprocess_stream_set_swap_interval(camera2_stream_ops *s,
+        int interval) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamSetSwapInterval(interval);
+}
+
+int EmulatedCamera2::reprocess_stream_get_min_undequeued_buffer_count(
+        const camera2_stream_ops *s,
+        int *count) {
+    EmulatedCamera2* ec = static_cast<const StreamOps*>(s)->parent;
+    return ec->reprocessStreamGetMinUndequeuedBufferCount(count);
+}
+
+int EmulatedCamera2::reprocess_stream_lock_buffer(camera2_stream_ops *s,
+        buffer_handle_t* buffer) {
+    EmulatedCamera2* ec = static_cast<StreamOps*>(s)->parent;
+    return ec->reprocessStreamLockBuffer(buffer);
+}
+
+int EmulatedCamera2::get_stream_slot_count(struct camera2_device *d) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(d);
+    return ec->getStreamSlotCount();
+}
+
+int EmulatedCamera2::allocate_stream(struct camera2_device *d,
+        uint32_t stream_slot,
+        uint32_t width,
+        uint32_t height,
+        uint32_t format,
+        camera2_stream_ops_t *stream_ops) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(d);
+    return ec->allocateStream(stream_slot, width, height, format, stream_ops);
+}
+
+int EmulatedCamera2::release_stream(struct camera2_device *d,
+        uint32_t stream_slot) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(d);
+    return ec->releaseStream(stream_slot);
+}
+
+void EmulatedCamera2::release(struct camera2_device *d) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(d);
+    ec->release();
+}
+
+int EmulatedCamera2::dump(struct camera2_device *d, int fd) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(d);
+    return ec->dump(fd);
+}
+
+int EmulatedCamera2::close(struct hw_device_t* device) {
+    EmulatedCamera2* ec =
+            static_cast<EmulatedCamera2*>(
+                reinterpret_cast<struct camera2_device*>(device) );
+    if (ec == NULL) {
+        ALOGE("%s: Unexpected NULL camera2 device", __FUNCTION__);
+        return -EINVAL;
+    }
+    return ec->closeCamera();
+}
+
+int EmulatedCamera2::get_metadata_vendor_tag_ops(struct camera2_device *d,
+        vendor_tag_query_ops_t **ops) {
+    EmulatedCamera2* ec = static_cast<EmulatedCamera2*>(d);
+    *ops = static_cast<vendor_tag_query_ops_t*>(
+            &ec->mVendorTagOps);
+    return NO_ERROR;
+}
+
+const char* EmulatedCamera2::get_camera_vendor_section_name(
+        const vendor_tag_query_ops_t *v,
+        uint32_t tag) {
+    EmulatedCamera2* ec = static_cast<const TagOps*>(v)->parent;
+    return ec->getVendorSectionName(tag);
+}
+
+const char* EmulatedCamera2::get_camera_vendor_tag_name(
+        const vendor_tag_query_ops_t *v,
+        uint32_t tag) {
+    EmulatedCamera2* ec = static_cast<const TagOps*>(v)->parent;
+    return ec->getVendorTagName(tag);
+}
+
+int EmulatedCamera2::get_camera_vendor_tag_type(
+        const vendor_tag_query_ops_t *v,
+        uint32_t tag)  {
+    EmulatedCamera2* ec = static_cast<const TagOps*>(v)->parent;
+    return ec->getVendorTagType(tag);
+}
+
+camera2_device_ops_t EmulatedCamera2::sDeviceOps = {
+    EmulatedCamera2::set_request_queue_src_ops,
+    EmulatedCamera2::get_request_queue_dst_ops,
+    EmulatedCamera2::set_reprocess_queue_src_ops,
+    EmulatedCamera2::get_reprocess_queue_dst_ops,
+    EmulatedCamera2::set_frame_queue_dst_ops,
+    EmulatedCamera2::get_frame_queue_src_ops,
+    EmulatedCamera2::set_notify_callback,
+    EmulatedCamera2::get_in_progress_count,
+    EmulatedCamera2::flush_captures_in_progress,
+    EmulatedCamera2::get_reprocess_stream_ops,
+    EmulatedCamera2::get_stream_slot_count,
+    EmulatedCamera2::allocate_stream,
+    EmulatedCamera2::release_stream,
+    EmulatedCamera2::get_metadata_vendor_tag_ops,
+    EmulatedCamera2::release,
+    EmulatedCamera2::dump
+};
+
+}; /* namespace android */

tools/emulator/system/camera/EmulatedCamera2.h

@@ -0,0 +1,305 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H
+#define HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H
+
+/*
+ * Contains declaration of a class EmulatedCamera that encapsulates
+ * functionality common to all version 2.0 emulated camera devices.  Instances
+ * of this class (for each emulated camera) are created during the construction
+ * of the EmulatedCameraFactory instance.  This class serves as an entry point
+ * for all camera API calls that defined by camera2_device_ops_t API.
+ */
+
+#include "hardware/camera2.h"
+#include "system/camera_metadata.h"
+#include "EmulatedBaseCamera.h"
+
+namespace android {
+
+/* Encapsulates functionality common to all version 2.0 emulated camera devices
+ *
+ * Note that EmulatedCameraFactory instantiates object of this class just once,
+ * when EmulatedCameraFactory instance gets constructed. Connection to /
+ * disconnection from the actual camera device is handled by calls to
+ * connectDevice(), and closeCamera() methods of this class that are invoked in
+ * response to hw_module_methods_t::open, and camera_device::close callbacks.
+ */
+class EmulatedCamera2 : public camera2_device, public EmulatedBaseCamera {
+public:
+    /* Constructs EmulatedCamera2 instance.
+     * Param:
+     *  cameraId - Zero based camera identifier, which is an index of the camera
+     *      instance in camera factory's array.
+     *  module - Emulated camera HAL module descriptor.
+     */
+    EmulatedCamera2(int cameraId,
+            struct hw_module_t* module);
+
+    /* Destructs EmulatedCamera2 instance. */
+    virtual ~EmulatedCamera2();
+
+    /****************************************************************************
+     * Abstract API
+     ***************************************************************************/
+
+public:
+
+    /****************************************************************************
+     * Public API
+     ***************************************************************************/
+
+public:
+    virtual status_t Initialize();
+
+    /****************************************************************************
+     * Camera API implementation
+     ***************************************************************************/
+
+public:
+    virtual status_t connectCamera(hw_device_t** device);
+
+    virtual status_t closeCamera();
+
+    virtual status_t getCameraInfo(struct camera_info* info);
+
+    /****************************************************************************
+     * Camera API implementation.
+     * These methods are called from the camera API callback routines.
+     ***************************************************************************/
+
+protected:
+    /** Request input queue */
+
+    int setRequestQueueSrcOps(
+        camera2_metadata_queue_src_ops *request_queue_src_ops);
+
+    int requestQueueNotifyNotEmpty();
+
+    /** Reprocessing input queue */
+
+    int setReprocessQueueSrcOps(
+        camera2_metadata_queue_src_ops *reprocess_queue_src_ops);
+
+    int reprocessQueueNotifyNotEmpty();
+
+    /** Frame output queue */
+
+    int setFrameQueueDstOps(camera2_metadata_queue_dst_ops *frame_queue_dst_ops);
+
+    int frameQueueBufferCount();
+    int frameQueueDequeue(camera_metadata_t **buffer);
+    int frameQueueFree(camera_metadata_t *old_buffer);
+
+    /** Notifications to application */
+    int setNotifyCallback(camera2_notify_callback notify_cb);
+
+    /** Count of requests in flight */
+    int getInProgressCount();
+
+    /** Cancel all captures in flight */
+    int flushCapturesInProgress();
+
+    /** Reprocessing input stream management */
+    int reprocessStreamDequeueBuffer(buffer_handle_t** buffer,
+            int *stride);
+
+    int reprocessStreamEnqueueBuffer(buffer_handle_t* buffer);
+
+    int reprocessStreamCancelBuffer(buffer_handle_t* buffer);
+
+    int reprocessStreamSetBufferCount(int count);
+
+    int reprocessStreamSetCrop(int left, int top, int right, int bottom);
+
+    int reprocessStreamSetTimestamp(int64_t timestamp);
+
+    int reprocessStreamSetUsage(int usage);
+
+    int reprocessStreamSetSwapInterval(int interval);
+
+    int reprocessStreamGetMinUndequeuedBufferCount(int *count);
+
+    int reprocessStreamLockBuffer(buffer_handle_t *buffer);
+
+    /** Output stream creation and management */
+
+    int getStreamSlotCount();
+
+    int allocateStream(uint32_t stream_slot,
+            uint32_t width,
+            uint32_t height,
+            int format,
+            camera2_stream_ops_t *stream_ops);
+
+    int releaseStream(uint32_t stream_slot);
+
+    /** Custom tag definitions */
+    const char* getVendorSectionName(uint32_t tag);
+    const char* getVendorTagName(uint32_t tag);
+    int         getVendorTagType(uint32_t tag);
+
+    /** Shutdown and debug methods */
+
+    int release();
+
+    int dump(int fd);
+
+    int close();
+
+    /****************************************************************************
+     * Camera API callbacks as defined by camera2_device_ops structure.  See
+     * hardware/libhardware/include/hardware/camera2.h for information on each
+     * of these callbacks. Implemented in this class, these callbacks simply
+     * dispatch the call into an instance of EmulatedCamera2 class defined in the
+     * 'camera_device2' parameter.
+     ***************************************************************************/
+
+private:
+    /** Input request queue */
+    static int set_request_queue_src_ops(camera2_device_t *,
+            camera2_metadata_queue_src_ops *queue_src_ops);
+    static int get_request_queue_dst_ops(camera2_device_t *,
+            camera2_metadata_queue_dst_ops **queue_dst_ops);
+    // for get_request_queue_dst_ops
+    static int request_queue_notify_queue_not_empty(
+        camera2_metadata_queue_dst_ops *);
+
+    /** Input reprocess queue */
+    static int set_reprocess_queue_src_ops(camera2_device_t *,
+            camera2_metadata_queue_src_ops *reprocess_queue_src_ops);
+    static int get_reprocess_queue_dst_ops(camera2_device_t *,
+            camera2_metadata_queue_dst_ops **queue_dst_ops);
+    // for reprocess_queue_dst_ops
+    static int reprocess_queue_notify_queue_not_empty(
+            camera2_metadata_queue_dst_ops *);
+
+    /** Output frame queue */
+    static int set_frame_queue_dst_ops(camera2_device_t *,
+            camera2_metadata_queue_dst_ops *queue_dst_ops);
+    static int get_frame_queue_src_ops(camera2_device_t *,
+            camera2_metadata_queue_src_ops **queue_src_ops);
+    // for get_frame_queue_src_ops
+    static int frame_queue_buffer_count(camera2_metadata_queue_src_ops *);
+    static int frame_queue_dequeue(camera2_metadata_queue_src_ops *,
+            camera_metadata_t **buffer);
+    static int frame_queue_free(camera2_metadata_queue_src_ops *,
+            camera_metadata_t *old_buffer);
+
+    /** Notifications to application */
+    static int set_notify_callback(camera2_device_t *,
+            camera2_notify_callback notify_cb);
+
+    /** In-progress request management */
+    static int get_in_progress_count(camera2_device_t *);
+
+    static int flush_captures_in_progress(camera2_device_t *);
+
+    /** Input reprocessing stream */
+    static int get_reprocess_stream_ops(camera2_device_t *,
+            camera2_stream_ops_t **stream);
+    // for get_reprocess_stream_ops
+    static int reprocess_stream_dequeue_buffer(camera2_stream_ops *,
+            buffer_handle_t** buffer, int *stride);
+    static int reprocess_stream_enqueue_buffer(camera2_stream_ops *,
+            buffer_handle_t* buffer);
+    static int reprocess_stream_cancel_buffer(camera2_stream_ops *,
+            buffer_handle_t* buffer);
+    static int reprocess_stream_set_buffer_count(camera2_stream_ops *,
+            int count);
+    static int reprocess_stream_set_crop(camera2_stream_ops *,
+            int left, int top, int right, int bottom);
+    static int reprocess_stream_set_timestamp(camera2_stream_ops *,
+            int64_t timestamp);
+    static int reprocess_stream_set_usage(camera2_stream_ops *,
+            int usage);
+    static int reprocess_stream_set_swap_interval(camera2_stream_ops *,
+            int interval);
+    static int reprocess_stream_get_min_undequeued_buffer_count(
+            const camera2_stream_ops *,
+            int *count);
+    static int reprocess_stream_lock_buffer(camera2_stream_ops *,
+            buffer_handle_t* buffer);
+
+    /** Output stream allocation and management */
+
+    static int get_stream_slot_count(camera2_device_t *);
+
+    static int allocate_stream(camera2_device_t *,
+            uint32_t stream_slot,
+            uint32_t width,
+            uint32_t height,
+            uint32_t format,
+            camera2_stream_ops_t *stream_ops);
+
+    static int release_stream(camera2_device_t *,
+            uint32_t stream_slot);
+
+    static void release(camera2_device_t *);
+
+    /** Vendor metadata registration */
+
+    static int get_metadata_vendor_tag_ops(camera2_device_t *,
+            vendor_tag_query_ops_t **ops);
+    // for get_metadata_vendor_tag_ops
+    static const char* get_camera_vendor_section_name(
+            const vendor_tag_query_ops_t *,
+            uint32_t tag);
+    static const char* get_camera_vendor_tag_name(
+            const vendor_tag_query_ops_t *,
+            uint32_t tag);
+    static int get_camera_vendor_tag_type(
+            const vendor_tag_query_ops_t *,
+            uint32_t tag);
+
+    static int dump(camera2_device_t *, int fd);
+
+    static int close(struct hw_device_t* device);
+
+    /****************************************************************************
+     * Data members
+     ***************************************************************************/
+
+  private:
+    static camera2_device_ops_t sDeviceOps;
+
+    struct QueueDstOps : public camera2_metadata_queue_dst_ops {
+        EmulatedCamera2 *parent;
+    };
+
+    struct QueueSrcOps : public camera2_metadata_queue_src_ops {
+        EmulatedCamera2 *parent;
+    };
+
+    struct StreamOps : public camera2_stream_ops {
+        EmulatedCamera2 *parent;
+    };
+
+    struct TagOps : public vendor_tag_query_ops {
+        EmulatedCamera2 *parent;
+    };
+
+    QueueDstOps mRequestQueueDstOps;
+    QueueDstOps mReprocessQueueDstOps;
+    QueueSrcOps mFrameQueueSrcOps;
+    StreamOps   mReprocessStreamOps;
+    TagOps      mVendorTagOps;
+};
+
+}; /* namespace android */
+
+#endif  /* HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H */

tools/emulator/system/camera/EmulatedCameraFactory.cpp

@@ -25,6 +25,7 @@
 #include <cutils/properties.h>
 #include "EmulatedQemuCamera.h"
 #include "EmulatedFakeCamera.h"
+#include "EmulatedFakeCamera2.h"
 #include "EmulatedCameraFactory.h"
 
 extern camera_module_t HAL_MODULE_INFO_SYM;
@@ -66,13 +67,27 @@ EmulatedCameraFactory::EmulatedCameraFactory()
                      __FUNCTION__, mEmulatedCameraNum);
                 return;
             }
-            memset(mEmulatedCameras, 0, (mEmulatedCameraNum + 1) * sizeof(EmulatedCamera*));
+            memset(mEmulatedCameras, 0,
+                    (mEmulatedCameraNum + 1) * sizeof(EmulatedBaseCamera*));
         }
 
         /* Create, and initialize the fake camera */
-        mEmulatedCameras[camera_id] =
-            new EmulatedFakeCamera(camera_id, true, &HAL_MODULE_INFO_SYM.common);
+        switch (getBackCameraHalVersion()) {
+            case 1:
+                mEmulatedCameras[camera_id] =
+                        new EmulatedFakeCamera(camera_id, false, &HAL_MODULE_INFO_SYM.common);
+                break;
+            case 2:
+                mEmulatedCameras[camera_id] =
+                        new EmulatedFakeCamera2(camera_id, false, &HAL_MODULE_INFO_SYM.common);
+                break;
+            default:
+                ALOGE("%s: Unknown back camera hal version requested: %d", __FUNCTION__,
+                        getBackCameraHalVersion());
+        }
         if (mEmulatedCameras[camera_id] != NULL) {
+            ALOGV("%s: Back camera device version is %d", __FUNCTION__,
+                    getBackCameraHalVersion());
             if (mEmulatedCameras[camera_id]->Initialize() != NO_ERROR) {
                 delete mEmulatedCameras[camera_id];
                 mEmulatedCameras--;
@@ -98,13 +113,27 @@ EmulatedCameraFactory::EmulatedCameraFactory()
                      __FUNCTION__, mEmulatedCameraNum);
                 return;
             }
-            memset(mEmulatedCameras, 0, mEmulatedCameraNum * sizeof(EmulatedCamera*));
+            memset(mEmulatedCameras, 0,
+                    mEmulatedCameraNum * sizeof(EmulatedBaseCamera*));
         }
 
         /* Create, and initialize the fake camera */
-        mEmulatedCameras[camera_id] =
-            new EmulatedFakeCamera(camera_id, false, &HAL_MODULE_INFO_SYM.common);
+        switch (getFrontCameraHalVersion()) {
+            case 1:
+                mEmulatedCameras[camera_id] =
+                        new EmulatedFakeCamera(camera_id, false, &HAL_MODULE_INFO_SYM.common);
+                break;
+            case 2:
+                mEmulatedCameras[camera_id] =
+                        new EmulatedFakeCamera2(camera_id, false, &HAL_MODULE_INFO_SYM.common);
+                break;
+            default:
+                ALOGE("%s: Unknown front camera hal version requested: %d", __FUNCTION__,
+                        getFrontCameraHalVersion());
+        }
         if (mEmulatedCameras[camera_id] != NULL) {
+            ALOGV("%s: Front camera device version is %d", __FUNCTION__,
+                    getFrontCameraHalVersion());
             if (mEmulatedCameras[camera_id]->Initialize() != NO_ERROR) {
                 delete mEmulatedCameras[camera_id];
                 mEmulatedCameras--;
@@ -348,6 +377,23 @@ bool EmulatedCameraFactory::isBackFakeCameraEmulationOn()
     }
 }
 
+int EmulatedCameraFactory::getBackCameraHalVersion()
+{
+    /* Defined by 'qemu.sf.back_camera_hal_version' boot property: if the
+     * property doesn't exist, it is assumed to be 1. */
+    char prop[PROPERTY_VALUE_MAX];
+    if (property_get("qemu.sf.back_camera_hal", prop, NULL) > 0) {
+        char *prop_end = prop;
+        int val = strtol(prop, &prop_end, 10);
+        if (*prop_end == '\0') {
+            return val;
+        }
+        // Badly formatted property, should just be a number
+        ALOGE("qemu.sf.back_camera_hal is not a number: %s", prop);
+    }
+    return 1;
+}
+
 bool EmulatedCameraFactory::isFrontFakeCameraEmulationOn()
 {
     /* Defined by 'qemu.sf.fake_camera' boot property: if property exist, and
@@ -362,6 +408,23 @@ bool EmulatedCameraFactory::isFrontFakeCameraEmulationOn()
     }
 }
 
+int EmulatedCameraFactory::getFrontCameraHalVersion()
+{
+    /* Defined by 'qemu.sf.front_camera_hal_version' boot property: if the
+     * property doesn't exist, it is assumed to be 1. */
+    char prop[PROPERTY_VALUE_MAX];
+    if (property_get("qemu.sf.front_camera_hal", prop, NULL) > 0) {
+        char *prop_end = prop;
+        int val = strtol(prop, &prop_end, 10);
+        if (*prop_end == '\0') {
+            return val;
+        }
+        // Badly formatted property, should just be a number
+        ALOGE("qemu.sf.front_camera_hal is not a number: %s", prop);
+    }
+    return 1;
+}
+
 /********************************************************************************
  * Initializer for the static member structure.
  *******************************************************************************/

tools/emulator/system/camera/EmulatedCameraFactory.h

@@ -134,9 +134,15 @@ private:
     /* Checks if fake camera emulation is on for the camera facing back. */
     bool isBackFakeCameraEmulationOn();
 
+    /* Gets camera device version number to use for back camera emulation */
+    int getBackCameraHalVersion();
+
     /* Checks if fake camera emulation is on for the camera facing front. */
     bool isFrontFakeCameraEmulationOn();
 
+    /* Gets camera device version number to use for front camera emulation */
+    int getFrontCameraHalVersion();
+
     /****************************************************************************
      * Data members.
      ***************************************************************************/

tools/emulator/system/camera/EmulatedFakeCamera2.cpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2012 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 EmulatedFakeCamera2 that encapsulates
+ * functionality of an advanced fake camera.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera_FakeCamera2"
+#include <cutils/log.h>
+#include <cutils/properties.h>
+#include "EmulatedFakeCamera2.h"
+#include "EmulatedCameraFactory.h"
+
+namespace android {
+
+EmulatedFakeCamera2::EmulatedFakeCamera2(int cameraId,
+        bool facingBack,
+        struct hw_module_t* module)
+        : EmulatedCamera2(cameraId,module),
+          mFacingBack(facingBack)
+{
+    ALOGD("Constructing emulated fake camera 2 facing %s",
+            facingBack ? "back" : "front");
+}
+
+EmulatedFakeCamera2::~EmulatedFakeCamera2()
+{
+}
+
+/****************************************************************************
+ * Public API overrides
+ ***************************************************************************/
+
+status_t EmulatedFakeCamera2::Initialize()
+{
+    return NO_ERROR;
+}
+
+};  /* namespace android */

tools/emulator/system/camera/EmulatedFakeCamera2.h

@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef HW_EMULATOR_CAMERA_EMULATED_FAKE_CAMERA2_H
+#define HW_EMULATOR_CAMERA_EMULATED_FAKE_CAMERA2_H
+
+/*
+ * Contains declaration of a class EmulatedFakeCamera2 that encapsulates
+ * functionality of a fake camera that implements version 2 of the camera device
+ * interface.
+ */
+
+#include "EmulatedCamera2.h"
+
+namespace android {
+
+/* Encapsulates functionality of an advanced fake camera.  This camera contains
+ * a simple simulation of a scene, sensor, and image processing pipeline.
+ */
+class EmulatedFakeCamera2 : public EmulatedCamera2 {
+public:
+    /* Constructs EmulatedFakeCamera instance. */
+    EmulatedFakeCamera2(int cameraId, bool facingBack, struct hw_module_t* module);
+
+    /* Destructs EmulatedFakeCamera instance. */
+    ~EmulatedFakeCamera2();
+
+    /****************************************************************************
+     * EmulatedCamera2 virtual overrides.
+     ***************************************************************************/
+
+public:
+    /* Initializes EmulatedFakeCamera2 instance. */
+     status_t Initialize();
+
+    /****************************************************************************
+     * EmulatedCamera abstract API implementation.
+     ***************************************************************************/
+
+protected:
+
+    /****************************************************************************
+     * Data memebers.
+     ***************************************************************************/
+
+protected:
+    /* Facing back (true) or front (false) switch. */
+    bool                        mFacingBack;
+
+};
+
+}; /* namespace android */
+
+#endif  /* HW_EMULATOR_CAMERA_EMULATED_FAKE_CAMERA2_H */

tools/emulator/system/camera/EmulatedQemuCamera2.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012 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 EmulatedQemuCamera2 that encapsulates
+ * functionality of a host webcam with further processing to simulate the
+ * capabilities of a v2 camera device.
+ */
+
+#define LOG_NDEBUG 0
+#define LOG_TAG "EmulatedCamera_QemuCamera2"
+#include <cutils/log.h>
+#include <cutils/properties.h>
+#include "EmulatedQemuCamera2.h"
+#include "EmulatedCameraFactory.h"
+
+namespace android {
+
+EmulatedQemuCamera2::EmulatedQemuCamera2(int cameraId,
+        bool facingBack,
+        struct hw_module_t* module)
+        : EmulatedCamera2(cameraId,module),
+          mFacingBack(facingBack)
+{
+    ALOGD("Constructing emulated qemu camera 2 facing %s",
+            facingBack ? "back" : "front");
+}
+
+EmulatedQemuCamera2::~EmulatedQemuCamera2()
+{
+}
+
+/****************************************************************************
+ * Public API overrides
+ ***************************************************************************/
+
+status_t EmulatedQemuCamera2::Initialize()
+{
+    return NO_ERROR;
+}
+
+};  /* namespace android */

tools/emulator/system/camera/EmulatedQemuCamera2.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA2_H
+#define HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA2_H
+
+/*
+ * Contains declaration of a class EmulatedQemuCamera2 that encapsulates
+ * functionality of a host webcam with added processing to implement version 2
+ * of the camera device interface.
+ */
+
+#include "EmulatedCamera2.h"
+
+namespace android {
+
+/* Encapsulates functionality of an advanced fake camera based on real host camera data.
+ */
+class EmulatedQemuCamera2 : public EmulatedCamera2 {
+public:
+    /* Constructs EmulatedFakeCamera instance. */
+    EmulatedQemuCamera2(int cameraId, bool facingBack, struct hw_module_t* module);
+
+    /* Destructs EmulatedFakeCamera instance. */
+    ~EmulatedQemuCamera2();
+
+    /****************************************************************************
+     * EmulatedCamera2 virtual overrides.
+     ***************************************************************************/
+
+public:
+    /* Initializes EmulatedQemuCamera2 instance. */
+     status_t Initialize();
+
+    /****************************************************************************
+     * EmulatedCamera abstract API implementation.
+     ***************************************************************************/
+
+protected:
+
+    /****************************************************************************
+     * Data memebers.
+     ***************************************************************************/
+
+protected:
+    /* Facing back (true) or front (false) switch. */
+    bool                        mFacingBack;
+
+};
+
+}; /* namespace android */
+
+#endif  /* HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA2_H */