/*
* 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.
*/
/**
* Contains implementation of a class EmulatedCamera that encapsulates
* functionality common to all version 3.0 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 camera3_device_ops_t API.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "EmulatedCamera3_Camera"
#include <cutils/log.h>
#include "EmulatedCamera3.h"
#include "system/camera_metadata.h"
namespace android {
/**
* Constructs EmulatedCamera3 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.
*/
EmulatedCamera3::EmulatedCamera3(int cameraId,
struct hw_module_t* module):
EmulatedBaseCamera(cameraId,
CAMERA_DEVICE_API_VERSION_3_3,
&common,
module),
mStatus(STATUS_ERROR)
{
common.close = EmulatedCamera3::close;
ops = &sDeviceOps;
mCallbackOps = NULL;
}
/* Destructs EmulatedCamera3 instance. */
EmulatedCamera3::~EmulatedCamera3() {
}
/****************************************************************************
* Abstract API
***************************************************************************/
/****************************************************************************
* Public API
***************************************************************************/
status_t EmulatedCamera3::Initialize() {
ALOGV("%s", __FUNCTION__);
mStatus = STATUS_CLOSED;
return NO_ERROR;
}
/****************************************************************************
* Camera API implementation
***************************************************************************/
status_t EmulatedCamera3::connectCamera(hw_device_t** device) {
ALOGV("%s", __FUNCTION__);
if (device == NULL) return BAD_VALUE;
if (mStatus != STATUS_CLOSED) {
ALOGE("%s: Trying to open a camera in state %d!",
__FUNCTION__, mStatus);
return INVALID_OPERATION;
}
*device = &common;
mStatus = STATUS_OPEN;
return NO_ERROR;
}
status_t EmulatedCamera3::closeCamera() {
mStatus = STATUS_CLOSED;
return NO_ERROR;
}
status_t EmulatedCamera3::getCameraInfo(struct camera_info* info) {
return EmulatedBaseCamera::getCameraInfo(info);
}
/****************************************************************************
* Camera Device API implementation.
* These methods are called from the camera API callback routines.
***************************************************************************/
status_t EmulatedCamera3::initializeDevice(
const camera3_callback_ops *callbackOps) {
if (callbackOps == NULL) {
ALOGE("%s: NULL callback ops provided to HAL!",
__FUNCTION__);
return BAD_VALUE;
}
if (mStatus != STATUS_OPEN) {
ALOGE("%s: Trying to initialize a camera in state %d!",
__FUNCTION__, mStatus);
return INVALID_OPERATION;
}
mCallbackOps = callbackOps;
mStatus = STATUS_READY;
return NO_ERROR;
}
status_t EmulatedCamera3::configureStreams(
camera3_stream_configuration *streamList) {
ALOGE("%s: Not implemented", __FUNCTION__);
return INVALID_OPERATION;
}
status_t EmulatedCamera3::registerStreamBuffers(
const camera3_stream_buffer_set *bufferSet) {
ALOGE("%s: Not implemented", __FUNCTION__);
return INVALID_OPERATION;
}
const camera_metadata_t* EmulatedCamera3::constructDefaultRequestSettings(
int type) {
ALOGE("%s: Not implemented", __FUNCTION__);
return NULL;
}
status_t EmulatedCamera3::processCaptureRequest(
camera3_capture_request *request) {
ALOGE("%s: Not implemented", __FUNCTION__);
return INVALID_OPERATION;
}
status_t EmulatedCamera3::flush() {
ALOGE("%s: Not implemented", __FUNCTION__);
return INVALID_OPERATION;
}
/** Debug methods */
void EmulatedCamera3::dump(int fd) {
ALOGE("%s: Not implemented", __FUNCTION__);
return;
}
/****************************************************************************
* Protected API. Callbacks to the framework.
***************************************************************************/
void EmulatedCamera3::sendCaptureResult(camera3_capture_result_t *result) {
mCallbackOps->process_capture_result(mCallbackOps, result);
}
void EmulatedCamera3::sendNotify(camera3_notify_msg_t *msg) {
mCallbackOps->notify(mCallbackOps, msg);
}
/****************************************************************************
* Private API.
***************************************************************************/
/****************************************************************************
* Camera API callbacks as defined by camera3_device_ops structure. See
* hardware/libhardware/include/hardware/camera3.h for information on each
* of these callbacks. Implemented in this class, these callbacks simply
* dispatch the call into an instance of EmulatedCamera3 class defined by the
* 'camera_device3' parameter, or set a member value in the same.
***************************************************************************/
EmulatedCamera3* getInstance(const camera3_device_t *d) {
const EmulatedCamera3* cec = static_cast<const EmulatedCamera3*>(d);
return const_cast<EmulatedCamera3*>(cec);
}
int EmulatedCamera3::initialize(const struct camera3_device *d,
const camera3_callback_ops_t *callback_ops) {
EmulatedCamera3* ec = getInstance(d);
return ec->initializeDevice(callback_ops);
}
int EmulatedCamera3::configure_streams(const struct camera3_device *d,
camera3_stream_configuration_t *stream_list) {
EmulatedCamera3* ec = getInstance(d);
return ec->configureStreams(stream_list);
}
int EmulatedCamera3::register_stream_buffers(
const struct camera3_device *d,
const camera3_stream_buffer_set_t *buffer_set) {
EmulatedCamera3* ec = getInstance(d);
return ec->registerStreamBuffers(buffer_set);
}
int EmulatedCamera3::process_capture_request(
const struct camera3_device *d,
camera3_capture_request_t *request) {
EmulatedCamera3* ec = getInstance(d);
return ec->processCaptureRequest(request);
}
const camera_metadata_t* EmulatedCamera3::construct_default_request_settings(
const camera3_device_t *d, int type) {
EmulatedCamera3* ec = getInstance(d);
return ec->constructDefaultRequestSettings(type);
}
void EmulatedCamera3::dump(const camera3_device_t *d, int fd) {
EmulatedCamera3* ec = getInstance(d);
ec->dump(fd);
}
int EmulatedCamera3::flush(const camera3_device_t *d) {
EmulatedCamera3* ec = getInstance(d);
return ec->flush();
}
int EmulatedCamera3::close(struct hw_device_t* device) {
EmulatedCamera3* ec =
static_cast<EmulatedCamera3*>(
reinterpret_cast<camera3_device_t*>(device) );
if (ec == NULL) {
ALOGE("%s: Unexpected NULL camera3 device", __FUNCTION__);
return BAD_VALUE;
}
return ec->closeCamera();
}
camera3_device_ops_t EmulatedCamera3::sDeviceOps = {
EmulatedCamera3::initialize,
EmulatedCamera3::configure_streams,
/* DEPRECATED: register_stream_buffers */ nullptr,
EmulatedCamera3::construct_default_request_settings,
EmulatedCamera3::process_capture_request,
/* DEPRECATED: get_metadata_vendor_tag_ops */ nullptr,
EmulatedCamera3::dump,
EmulatedCamera3::flush
};
const char* EmulatedCamera3::sAvailableCapabilitiesStrings[NUM_CAPABILITIES] = {
"BACKWARD_COMPATIBLE",
"MANUAL_SENSOR",
"MANUAL_POST_PROCESSING",
"RAW",
"PRIVATE_REPROCESSING",
"READ_SENSOR_SETTINGS",
"BURST_CAPTURE",
"YUV_REPROCESSING",
"DEPTH_OUTPUT",
"CONSTRAINED_HIGH_SPEED_VIDEO",
"FULL_LEVEL"
};
}; /* namespace android */