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/*
* Copyright (C) 2015 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.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "NdkCameraMetadata"
#define ATRACE_TAG ATRACE_TAG_CAMERA
#include <utils/Log.h>
#include <utils/Trace.h>
#include <camera/NdkCameraMetadata.h>
#include "impl/ACameraMetadata.h"
using namespace android;
#ifndef __ANDROID_VNDK__
namespace {
constexpr const char* android_hardware_camera2_CameraMetadata_jniClassName =
"android/hardware/camera2/CameraMetadata";
constexpr const char* android_hardware_camera2_CameraCharacteristics_jniClassName =
"android/hardware/camera2/CameraCharacteristics";
constexpr const char* android_hardware_camera2_CaptureResult_jniClassName =
"android/hardware/camera2/CaptureResult";
jclass android_hardware_camera2_CameraCharacteristics_clazz = nullptr;
jclass android_hardware_camera2_CaptureResult_clazz = nullptr;
jmethodID android_hardware_camera2_CameraMetadata_getNativeMetadataPtr = nullptr;
// Called at most once to initializes global variables used by JNI.
bool InitJni(JNIEnv* env) {
// From C++11 onward, static initializers are guaranteed to be executed at most once,
// even if called from multiple threads.
static bool ok = [env]() -> bool {
const jclass cameraMetadataClazz = env->FindClass(
android_hardware_camera2_CameraMetadata_jniClassName);
if (cameraMetadataClazz == nullptr) {
return false;
}
const jmethodID cameraMetadata_getNativeMetadataPtr =
env->GetMethodID(cameraMetadataClazz, "getNativeMetadataPtr", "()J");
if (cameraMetadata_getNativeMetadataPtr == nullptr) {
return false;
}
const jclass cameraCharacteristics_clazz = env->FindClass(
android_hardware_camera2_CameraCharacteristics_jniClassName);
if (cameraCharacteristics_clazz == nullptr) {
return false;
}
const jclass captureResult_clazz = env->FindClass(
android_hardware_camera2_CaptureResult_jniClassName);
if (captureResult_clazz == nullptr) {
return false;
}
android_hardware_camera2_CameraMetadata_getNativeMetadataPtr =
cameraMetadata_getNativeMetadataPtr;
android_hardware_camera2_CameraCharacteristics_clazz =
static_cast<jclass>(env->NewGlobalRef(cameraCharacteristics_clazz));
android_hardware_camera2_CaptureResult_clazz =
static_cast<jclass>(env->NewGlobalRef(captureResult_clazz));
return true;
}();
return ok;
}
// Given cameraMetadata, an instance of android.hardware.camera2.CameraMetadata, invokes
// cameraMetadata.getNativeMetadataPtr() and returns it as a std::shared_ptr<CameraMetadata>*.
std::shared_ptr<CameraMetadata>* CameraMetadata_getNativeMetadataPtr(JNIEnv* env,
jobject cameraMetadata) {
if (cameraMetadata == nullptr) {
ALOGE("%s: Invalid Java CameraMetadata object.", __FUNCTION__);
return nullptr;
}
jlong ret = env->CallLongMethod(cameraMetadata,
android_hardware_camera2_CameraMetadata_getNativeMetadataPtr);
return reinterpret_cast<std::shared_ptr<CameraMetadata>* >(ret);
}
} // namespace
#endif /* __ANDROID_VNDK__ */
EXPORT
camera_status_t ACameraMetadata_getConstEntry(
const ACameraMetadata* acm, uint32_t tag, ACameraMetadata_const_entry* entry) {
ATRACE_CALL();
if (acm == nullptr || entry == nullptr) {
ALOGE("%s: invalid argument! metadata %p, tag 0x%x, entry %p",
__FUNCTION__, acm, tag, entry);
return ACAMERA_ERROR_INVALID_PARAMETER;
}
return acm->getConstEntry(tag, entry);
}
EXPORT
camera_status_t ACameraMetadata_getAllTags(
const ACameraMetadata* acm, /*out*/int32_t* numTags, /*out*/const uint32_t** tags) {
ATRACE_CALL();
if (acm == nullptr || numTags == nullptr || tags == nullptr) {
ALOGE("%s: invalid argument! metadata %p, numTags %p, tags %p",
__FUNCTION__, acm, numTags, tags);
return ACAMERA_ERROR_INVALID_PARAMETER;
}
return acm->getTags(numTags, tags);
}
EXPORT
ACameraMetadata* ACameraMetadata_copy(const ACameraMetadata* src) {
ATRACE_CALL();
if (src == nullptr) {
ALOGE("%s: src is null!", __FUNCTION__);
return nullptr;
}
ACameraMetadata* copy = new ACameraMetadata(*src);
copy->incStrong(/*id=*/(void*) ACameraMetadata_copy);
return copy;
}
EXPORT
void ACameraMetadata_free(ACameraMetadata* metadata) {
ATRACE_CALL();
if (metadata != nullptr) {
metadata->decStrong((void*) ACameraMetadata_free);
}
}
EXPORT
bool ACameraMetadata_isLogicalMultiCamera(const ACameraMetadata* staticMetadata,
/*out*/size_t* numPhysicalCameras, /*out*/const char*const** physicalCameraIds) {
ATRACE_CALL();
if (numPhysicalCameras == nullptr || physicalCameraIds == nullptr) {
ALOGE("%s: Invalid input: numPhysicalCameras %p, physicalCameraIds %p",
__FUNCTION__, numPhysicalCameras, physicalCameraIds);
return false;
}
if (staticMetadata == nullptr) {
ALOGE("%s: Invalid input: staticMetadata is null.", __FUNCTION__);
return false;
}
return staticMetadata->isLogicalMultiCamera(numPhysicalCameras, physicalCameraIds);
}
#ifndef __ANDROID_VNDK__
EXPORT
ACameraMetadata* ACameraMetadata_fromCameraMetadata(JNIEnv* env, jobject cameraMetadata) {
ATRACE_CALL();
const bool ok = InitJni(env);
LOG_ALWAYS_FATAL_IF(!ok, "Failed to find CameraMetadata Java classes.");
if (cameraMetadata == nullptr) {
return nullptr;
}
ACameraMetadata::ACAMERA_METADATA_TYPE type;
if (env->IsInstanceOf(cameraMetadata,
android_hardware_camera2_CameraCharacteristics_clazz)) {
type = ACameraMetadata::ACM_CHARACTERISTICS;
} else if (env->IsInstanceOf(cameraMetadata,
android_hardware_camera2_CaptureResult_clazz)) {
type = ACameraMetadata::ACM_RESULT;
} else {
return nullptr;
}
auto sharedData = CameraMetadata_getNativeMetadataPtr(env, cameraMetadata);
ACameraMetadata* output = new ACameraMetadata(*sharedData, type);
output->incStrong(/*id=*/(void*) ACameraMetadata_fromCameraMetadata);
return output;
}
#endif /* __ANDROID_VNDK__ */
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