upload android base code part6
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android/device/generic/goldfish/camera/EmulatedCamera2.h
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274
android/device/generic/goldfish/camera/EmulatedCamera2.h
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/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H
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#define HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H
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/*
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* Contains declaration of a class EmulatedCamera that encapsulates
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* functionality common to all version 2.0 emulated camera devices. Instances
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* of this class (for each emulated camera) are created during the construction
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* of the EmulatedCameraFactory instance. This class serves as an entry point
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* for all camera API calls that defined by camera2_device_ops_t API.
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*/
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#include "hardware/camera2.h"
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#include "system/camera_metadata.h"
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#include "EmulatedBaseCamera.h"
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#include <utils/Thread.h>
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#include <utils/Mutex.h>
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namespace android {
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/* Encapsulates functionality common to all version 2.0 emulated camera devices
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*
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* Note that EmulatedCameraFactory instantiates object of this class just once,
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* when EmulatedCameraFactory instance gets constructed. Connection to /
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* disconnection from the actual camera device is handled by calls to
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* connectDevice(), and closeCamera() methods of this class that are invoked in
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* response to hw_module_methods_t::open, and camera_device::close callbacks.
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*/
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class EmulatedCamera2 : public camera2_device, public EmulatedBaseCamera {
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public:
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/* Constructs EmulatedCamera2 instance.
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* Param:
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* cameraId - Zero based camera identifier, which is an index of the camera
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* instance in camera factory's array.
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* module - Emulated camera HAL module descriptor.
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*/
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EmulatedCamera2(int cameraId,
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struct hw_module_t* module);
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/* Destructs EmulatedCamera2 instance. */
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virtual ~EmulatedCamera2();
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/****************************************************************************
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* Abstract API
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***************************************************************************/
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public:
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/****************************************************************************
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* Public API
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***************************************************************************/
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public:
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virtual status_t Initialize();
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/****************************************************************************
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* Camera module API and generic hardware device API implementation
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***************************************************************************/
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public:
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virtual status_t connectCamera(hw_device_t** device);
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virtual status_t closeCamera();
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virtual status_t getCameraInfo(struct camera_info* info) = 0;
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/****************************************************************************
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* Camera API implementation.
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* These methods are called from the camera API callback routines.
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***************************************************************************/
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protected:
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/** Request input queue notification */
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virtual int requestQueueNotify();
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/** Count of requests in flight */
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virtual int getInProgressCount();
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/** Cancel all captures in flight */
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virtual int flushCapturesInProgress();
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virtual int constructDefaultRequest(
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int request_template,
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camera_metadata_t **request);
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/** Output stream creation and management */
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virtual int allocateStream(
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uint32_t width,
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uint32_t height,
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int format,
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const camera2_stream_ops_t *stream_ops,
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uint32_t *stream_id,
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uint32_t *format_actual,
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uint32_t *usage,
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uint32_t *max_buffers);
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virtual int registerStreamBuffers(
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uint32_t stream_id,
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int num_buffers,
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buffer_handle_t *buffers);
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virtual int releaseStream(uint32_t stream_id);
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/** Input stream creation and management */
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virtual int allocateReprocessStream(
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uint32_t width,
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uint32_t height,
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uint32_t format,
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const camera2_stream_in_ops_t *reprocess_stream_ops,
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uint32_t *stream_id,
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uint32_t *consumer_usage,
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uint32_t *max_buffers);
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virtual int allocateReprocessStreamFromStream(
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uint32_t output_stream_id,
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const camera2_stream_in_ops_t *reprocess_stream_ops,
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uint32_t *stream_id);
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virtual int releaseReprocessStream(uint32_t stream_id);
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/** 3A action triggering */
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virtual int triggerAction(uint32_t trigger_id,
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int32_t ext1, int32_t ext2);
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/** Custom tag definitions */
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virtual const char* getVendorSectionName(uint32_t tag);
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virtual const char* getVendorTagName(uint32_t tag);
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virtual int getVendorTagType(uint32_t tag);
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/** Debug methods */
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virtual int dump(int fd);
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/****************************************************************************
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* Camera API callbacks as defined by camera2_device_ops structure. See
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* hardware/libhardware/include/hardware/camera2.h for information on each
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* of these callbacks. Implemented in this class, these callbacks simply
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* dispatch the call into an instance of EmulatedCamera2 class defined in
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* the 'camera_device2' parameter.
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***************************************************************************/
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private:
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/** Input request queue */
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static int set_request_queue_src_ops(const camera2_device_t *,
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const camera2_request_queue_src_ops *queue_src_ops);
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static int notify_request_queue_not_empty(const camera2_device_t *);
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/** Output frame queue */
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static int set_frame_queue_dst_ops(const camera2_device_t *,
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const camera2_frame_queue_dst_ops *queue_dst_ops);
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/** In-progress request management */
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static int get_in_progress_count(const camera2_device_t *);
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static int flush_captures_in_progress(const camera2_device_t *);
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/** Request template creation */
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static int construct_default_request(const camera2_device_t *,
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int request_template,
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camera_metadata_t **request);
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/** Stream management */
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static int allocate_stream(const camera2_device_t *,
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uint32_t width,
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uint32_t height,
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int format,
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const camera2_stream_ops_t *stream_ops,
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uint32_t *stream_id,
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uint32_t *format_actual,
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uint32_t *usage,
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uint32_t *max_buffers);
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static int register_stream_buffers(const camera2_device_t *,
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uint32_t stream_id,
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int num_buffers,
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buffer_handle_t *buffers);
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static int release_stream(const camera2_device_t *,
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uint32_t stream_id);
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static int allocate_reprocess_stream(const camera2_device_t *,
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uint32_t width,
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uint32_t height,
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uint32_t format,
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const camera2_stream_in_ops_t *reprocess_stream_ops,
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uint32_t *stream_id,
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uint32_t *consumer_usage,
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uint32_t *max_buffers);
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static int allocate_reprocess_stream_from_stream(const camera2_device_t *,
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uint32_t output_stream_id,
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const camera2_stream_in_ops_t *reprocess_stream_ops,
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uint32_t *stream_id);
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static int release_reprocess_stream(const camera2_device_t *,
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uint32_t stream_id);
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/** 3A triggers*/
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static int trigger_action(const camera2_device_t *,
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uint32_t trigger_id,
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int ext1,
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int ext2);
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/** Notifications to application */
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static int set_notify_callback(const camera2_device_t *,
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camera2_notify_callback notify_cb,
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void *user);
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/** Vendor metadata registration */
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static int get_metadata_vendor_tag_ops(const camera2_device_t *,
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vendor_tag_query_ops_t **ops);
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// for get_metadata_vendor_tag_ops
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static const char* get_camera_vendor_section_name(
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const vendor_tag_query_ops_t *,
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uint32_t tag);
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static const char* get_camera_vendor_tag_name(
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const vendor_tag_query_ops_t *,
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uint32_t tag);
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static int get_camera_vendor_tag_type(
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const vendor_tag_query_ops_t *,
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uint32_t tag);
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static int dump(const camera2_device_t *, int fd);
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/** For hw_device_t ops */
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static int close(struct hw_device_t* device);
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/****************************************************************************
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* Data members shared with implementations
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***************************************************************************/
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protected:
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/** Mutex for calls through camera2 device interface */
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Mutex mMutex;
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bool mStatusPresent;
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const camera2_request_queue_src_ops *mRequestQueueSrc;
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const camera2_frame_queue_dst_ops *mFrameQueueDst;
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struct TagOps : public vendor_tag_query_ops {
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EmulatedCamera2 *parent;
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};
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TagOps mVendorTagOps;
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void sendNotification(int32_t msgType,
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int32_t ext1, int32_t ext2, int32_t ext3);
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/****************************************************************************
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* Data members
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***************************************************************************/
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private:
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static camera2_device_ops_t sDeviceOps;
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camera2_notify_callback mNotifyCb;
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void* mNotifyUserPtr;
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};
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}; /* namespace android */
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#endif /* HW_EMULATOR_CAMERA_EMULATED_CAMERA2_H */
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