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/*
* 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.
*/
#include <cstdlib>
#include <hardware/camera_common.h>
#include <hardware/hardware.h>
#include "ExampleCamera.h"
#include "VendorTags.h"
//#define LOG_NDEBUG 0
#define LOG_TAG "DefaultCameraHAL"
#include <cutils/log.h>
#define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)
#include <cutils/trace.h>
#include "CameraHAL.h"
/*
* This file serves as the entry point to the HAL. It contains the module
* structure and functions used by the framework to load and interface to this
* HAL, as well as the handles to the individual camera devices.
*/
namespace default_camera_hal {
// Default Camera HAL has 2 cameras, front and rear.
static CameraHAL gCameraHAL(2);
// Handle containing vendor tag functionality
static VendorTags gVendorTags;
CameraHAL::CameraHAL(int num_cameras)
: mNumberOfCameras(num_cameras),
mCallbacks(NULL)
{
// Allocate camera array and instantiate camera devices
mCameras = new Camera*[mNumberOfCameras];
// Rear camera
mCameras[0] = new ExampleCamera(0);
// Front camera
mCameras[1] = new ExampleCamera(1);
}
CameraHAL::~CameraHAL()
{
for (int i = 0; i < mNumberOfCameras; i++) {
delete mCameras[i];
}
delete [] mCameras;
}
int CameraHAL::getNumberOfCameras()
{
ALOGV("%s: %d", __func__, mNumberOfCameras);
return mNumberOfCameras;
}
int CameraHAL::getCameraInfo(int id, struct camera_info* info)
{
ALOGV("%s: camera id %d: info=%p", __func__, id, info);
if (id < 0 || id >= mNumberOfCameras) {
ALOGE("%s: Invalid camera id %d", __func__, id);
return -ENODEV;
}
// TODO: return device-specific static metadata
return mCameras[id]->getInfo(info);
}
int CameraHAL::setCallbacks(const camera_module_callbacks_t *callbacks)
{
ALOGV("%s : callbacks=%p", __func__, callbacks);
mCallbacks = callbacks;
return 0;
}
int CameraHAL::open(const hw_module_t* mod, const char* name, hw_device_t** dev)
{
int id;
char *nameEnd;
ALOGV("%s: module=%p, name=%s, device=%p", __func__, mod, name, dev);
if (*name == '\0') {
ALOGE("%s: Invalid camera id name is NULL", __func__);
return -EINVAL;
}
id = strtol(name, &nameEnd, 10);
if (*nameEnd != '\0') {
ALOGE("%s: Invalid camera id name %s", __func__, name);
return -EINVAL;
} else if (id < 0 || id >= mNumberOfCameras) {
ALOGE("%s: Invalid camera id %d", __func__, id);
return -ENODEV;
}
return mCameras[id]->open(mod, dev);
}
extern "C" {
static int get_number_of_cameras()
{
return gCameraHAL.getNumberOfCameras();
}
static int get_camera_info(int id, struct camera_info* info)
{
return gCameraHAL.getCameraInfo(id, info);
}
static int set_callbacks(const camera_module_callbacks_t *callbacks)
{
return gCameraHAL.setCallbacks(callbacks);
}
static int get_tag_count(const vendor_tag_ops_t* ops)
{
return gVendorTags.getTagCount(ops);
}
static void get_all_tags(const vendor_tag_ops_t* ops, uint32_t* tag_array)
{
gVendorTags.getAllTags(ops, tag_array);
}
static const char* get_section_name(const vendor_tag_ops_t* ops, uint32_t tag)
{
return gVendorTags.getSectionName(ops, tag);
}
static const char* get_tag_name(const vendor_tag_ops_t* ops, uint32_t tag)
{
return gVendorTags.getTagName(ops, tag);
}
static int get_tag_type(const vendor_tag_ops_t* ops, uint32_t tag)
{
return gVendorTags.getTagType(ops, tag);
}
static void get_vendor_tag_ops(vendor_tag_ops_t* ops)
{
ALOGV("%s : ops=%p", __func__, ops);
ops->get_tag_count = get_tag_count;
ops->get_all_tags = get_all_tags;
ops->get_section_name = get_section_name;
ops->get_tag_name = get_tag_name;
ops->get_tag_type = get_tag_type;
}
static int open_dev(const hw_module_t* mod, const char* name, hw_device_t** dev)
{
return gCameraHAL.open(mod, name, dev);
}
static hw_module_methods_t gCameraModuleMethods = {
open : open_dev
};
camera_module_t HAL_MODULE_INFO_SYM __attribute__ ((visibility("default"))) = {
common : {
tag : HARDWARE_MODULE_TAG,
module_api_version : CAMERA_MODULE_API_VERSION_2_2,
hal_api_version : HARDWARE_HAL_API_VERSION,
id : CAMERA_HARDWARE_MODULE_ID,
name : "Default Camera HAL",
author : "The Android Open Source Project",
methods : &gCameraModuleMethods,
dso : NULL,
reserved : {0},
},
get_number_of_cameras : get_number_of_cameras,
get_camera_info : get_camera_info,
set_callbacks : set_callbacks,
get_vendor_tag_ops : get_vendor_tag_ops,
open_legacy : NULL,
set_torch_mode : NULL,
init : NULL,
reserved : {0},
};
} // extern "C"
} // namespace default_camera_hal
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