/*
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**
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** Copyright 2008, 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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//#define LOG_NDEBUG 0
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#define LOG_TAG "Camera-JNI"
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#include <utils/Log.h>
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#include "jni.h"
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#include <nativehelper/JNIHelp.h>
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#include "core_jni_helpers.h"
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#include <android_runtime/android_graphics_SurfaceTexture.h>
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#include <android_runtime/android_view_Surface.h>
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#include <cutils/properties.h>
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#include <utils/Vector.h>
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#include <utils/Errors.h>
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#include <gui/GLConsumer.h>
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#include <gui/Surface.h>
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#include <camera/Camera.h>
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#include <binder/IMemory.h>
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using namespace android;
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enum {
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// Keep up to date with Camera.java
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CAMERA_HAL_API_VERSION_NORMAL_CONNECT = -2,
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};
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struct fields_t {
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jfieldID context;
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jfieldID facing;
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jfieldID orientation;
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jfieldID canDisableShutterSound;
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jfieldID face_rect;
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jfieldID face_score;
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jfieldID face_id;
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jfieldID face_left_eye;
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jfieldID face_right_eye;
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jfieldID face_mouth;
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jfieldID rect_left;
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jfieldID rect_top;
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jfieldID rect_right;
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jfieldID rect_bottom;
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jfieldID point_x;
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jfieldID point_y;
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jmethodID post_event;
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jmethodID rect_constructor;
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jmethodID face_constructor;
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jmethodID point_constructor;
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};
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static fields_t fields;
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static Mutex sLock;
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// provides persistent context for calls from native code to Java
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class JNICameraContext: public CameraListener
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{
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public:
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JNICameraContext(JNIEnv* env, jobject weak_this, jclass clazz, const sp<Camera>& camera);
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~JNICameraContext() { release(); }
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virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2);
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virtual void postData(int32_t msgType, const sp<IMemory>& dataPtr,
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camera_frame_metadata_t *metadata);
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virtual void postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
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virtual void postRecordingFrameHandleTimestamp(nsecs_t timestamp, native_handle_t* handle);
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virtual void postRecordingFrameHandleTimestampBatch(
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const std::vector<nsecs_t>& timestamps,
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const std::vector<native_handle_t*>& handles);
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void postMetadata(JNIEnv *env, int32_t msgType, camera_frame_metadata_t *metadata);
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void addCallbackBuffer(JNIEnv *env, jbyteArray cbb, int msgType);
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void setCallbackMode(JNIEnv *env, bool installed, bool manualMode);
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sp<Camera> getCamera() { Mutex::Autolock _l(mLock); return mCamera; }
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bool isRawImageCallbackBufferAvailable() const;
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void release();
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private:
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void copyAndPost(JNIEnv* env, const sp<IMemory>& dataPtr, int msgType);
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void clearCallbackBuffers_l(JNIEnv *env, Vector<jbyteArray> *buffers);
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void clearCallbackBuffers_l(JNIEnv *env);
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jbyteArray getCallbackBuffer(JNIEnv *env, Vector<jbyteArray> *buffers, size_t bufferSize);
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jobject mCameraJObjectWeak; // weak reference to java object
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jclass mCameraJClass; // strong reference to java class
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sp<Camera> mCamera; // strong reference to native object
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jclass mFaceClass; // strong reference to Face class
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jclass mRectClass; // strong reference to Rect class
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jclass mPointClass; // strong reference to Point class
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Mutex mLock;
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/*
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* Global reference application-managed raw image buffer queue.
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*
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* Manual-only mode is supported for raw image callbacks, which is
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* set whenever method addCallbackBuffer() with msgType =
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* CAMERA_MSG_RAW_IMAGE is called; otherwise, null is returned
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* with raw image callbacks.
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*/
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Vector<jbyteArray> mRawImageCallbackBuffers;
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/*
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* Application-managed preview buffer queue and the flags
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* associated with the usage of the preview buffer callback.
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*/
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Vector<jbyteArray> mCallbackBuffers; // Global reference application managed byte[]
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bool mManualBufferMode; // Whether to use application managed buffers.
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bool mManualCameraCallbackSet; // Whether the callback has been set, used to
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// reduce unnecessary calls to set the callback.
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};
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bool JNICameraContext::isRawImageCallbackBufferAvailable() const
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{
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return !mRawImageCallbackBuffers.isEmpty();
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}
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sp<Camera> get_native_camera(JNIEnv *env, jobject thiz, JNICameraContext** pContext)
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{
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sp<Camera> camera;
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Mutex::Autolock _l(sLock);
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JNICameraContext* context = reinterpret_cast<JNICameraContext*>(env->GetLongField(thiz, fields.context));
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if (context != NULL) {
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camera = context->getCamera();
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}
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ALOGV("get_native_camera: context=%p, camera=%p", context, camera.get());
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if (camera == 0) {
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jniThrowRuntimeException(env,
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"Camera is being used after Camera.release() was called");
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}
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if (pContext != NULL) *pContext = context;
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return camera;
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}
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JNICameraContext::JNICameraContext(JNIEnv* env, jobject weak_this, jclass clazz, const sp<Camera>& camera)
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{
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mCameraJObjectWeak = env->NewGlobalRef(weak_this);
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mCameraJClass = (jclass)env->NewGlobalRef(clazz);
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mCamera = camera;
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jclass faceClazz = env->FindClass("android/hardware/Camera$Face");
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mFaceClass = (jclass) env->NewGlobalRef(faceClazz);
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jclass rectClazz = env->FindClass("android/graphics/Rect");
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mRectClass = (jclass) env->NewGlobalRef(rectClazz);
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jclass pointClazz = env->FindClass("android/graphics/Point");
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mPointClass = (jclass) env->NewGlobalRef(pointClazz);
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mManualBufferMode = false;
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mManualCameraCallbackSet = false;
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}
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void JNICameraContext::release()
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{
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ALOGV("release");
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Mutex::Autolock _l(mLock);
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JNIEnv *env = AndroidRuntime::getJNIEnv();
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if (mCameraJObjectWeak != NULL) {
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env->DeleteGlobalRef(mCameraJObjectWeak);
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mCameraJObjectWeak = NULL;
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}
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if (mCameraJClass != NULL) {
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env->DeleteGlobalRef(mCameraJClass);
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mCameraJClass = NULL;
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}
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if (mFaceClass != NULL) {
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env->DeleteGlobalRef(mFaceClass);
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mFaceClass = NULL;
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}
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if (mRectClass != NULL) {
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env->DeleteGlobalRef(mRectClass);
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mRectClass = NULL;
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}
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if (mPointClass != NULL) {
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env->DeleteGlobalRef(mPointClass);
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mPointClass = NULL;
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}
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clearCallbackBuffers_l(env);
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mCamera.clear();
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}
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void JNICameraContext::notify(int32_t msgType, int32_t ext1, int32_t ext2)
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{
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ALOGV("notify");
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// VM pointer will be NULL if object is released
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Mutex::Autolock _l(mLock);
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if (mCameraJObjectWeak == NULL) {
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ALOGW("callback on dead camera object");
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return;
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}
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JNIEnv *env = AndroidRuntime::getJNIEnv();
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/*
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* If the notification or msgType is CAMERA_MSG_RAW_IMAGE_NOTIFY, change it
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* to CAMERA_MSG_RAW_IMAGE since CAMERA_MSG_RAW_IMAGE_NOTIFY is not exposed
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* to the Java app.
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*/
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if (msgType == CAMERA_MSG_RAW_IMAGE_NOTIFY) {
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msgType = CAMERA_MSG_RAW_IMAGE;
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}
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env->CallStaticVoidMethod(mCameraJClass, fields.post_event,
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mCameraJObjectWeak, msgType, ext1, ext2, NULL);
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}
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jbyteArray JNICameraContext::getCallbackBuffer(
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JNIEnv* env, Vector<jbyteArray>* buffers, size_t bufferSize)
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{
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jbyteArray obj = NULL;
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// Vector access should be protected by lock in postData()
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if (!buffers->isEmpty()) {
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ALOGV("Using callback buffer from queue of length %zu", buffers->size());
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jbyteArray globalBuffer = buffers->itemAt(0);
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buffers->removeAt(0);
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obj = (jbyteArray)env->NewLocalRef(globalBuffer);
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env->DeleteGlobalRef(globalBuffer);
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if (obj != NULL) {
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jsize bufferLength = env->GetArrayLength(obj);
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if ((int)bufferLength < (int)bufferSize) {
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ALOGE("Callback buffer was too small! Expected %zu bytes, but got %d bytes!",
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bufferSize, bufferLength);
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env->DeleteLocalRef(obj);
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return NULL;
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}
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}
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}
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return obj;
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}
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void JNICameraContext::copyAndPost(JNIEnv* env, const sp<IMemory>& dataPtr, int msgType)
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{
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jbyteArray obj = NULL;
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// allocate Java byte array and copy data
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if (dataPtr != NULL) {
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ssize_t offset;
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size_t size;
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sp<IMemoryHeap> heap = dataPtr->getMemory(&offset, &size);
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if (heap == NULL) {
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ALOGV("copyAndPost: skipping null memory callback!");
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return;
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}
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ALOGV("copyAndPost: off=%zd, size=%zu", offset, size);
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uint8_t *heapBase = (uint8_t*)heap->base();
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if (heapBase != NULL) {
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const jbyte* data = reinterpret_cast<const jbyte*>(heapBase + offset);
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if (msgType == CAMERA_MSG_RAW_IMAGE) {
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obj = getCallbackBuffer(env, &mRawImageCallbackBuffers, size);
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} else if (msgType == CAMERA_MSG_PREVIEW_FRAME && mManualBufferMode) {
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obj = getCallbackBuffer(env, &mCallbackBuffers, size);
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if (mCallbackBuffers.isEmpty()) {
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ALOGV("Out of buffers, clearing callback!");
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mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_NOOP);
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mManualCameraCallbackSet = false;
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if (obj == NULL) {
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return;
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}
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}
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} else {
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ALOGV("Allocating callback buffer");
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obj = env->NewByteArray(size);
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}
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if (obj == NULL) {
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ALOGE("Couldn't allocate byte array for JPEG data");
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env->ExceptionClear();
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} else {
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env->SetByteArrayRegion(obj, 0, size, data);
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}
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} else {
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ALOGE("image heap is NULL");
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}
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}
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// post image data to Java
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env->CallStaticVoidMethod(mCameraJClass, fields.post_event,
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mCameraJObjectWeak, msgType, 0, 0, obj);
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if (obj) {
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env->DeleteLocalRef(obj);
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}
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}
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void JNICameraContext::postData(int32_t msgType, const sp<IMemory>& dataPtr,
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camera_frame_metadata_t *metadata)
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{
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// VM pointer will be NULL if object is released
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Mutex::Autolock _l(mLock);
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JNIEnv *env = AndroidRuntime::getJNIEnv();
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if (mCameraJObjectWeak == NULL) {
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ALOGW("callback on dead camera object");
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return;
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}
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int32_t dataMsgType = msgType & ~CAMERA_MSG_PREVIEW_METADATA;
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// return data based on callback type
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switch (dataMsgType) {
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case CAMERA_MSG_VIDEO_FRAME:
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// should never happen
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break;
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// For backward-compatibility purpose, if there is no callback
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// buffer for raw image, the callback returns null.
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case CAMERA_MSG_RAW_IMAGE:
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ALOGV("rawCallback");
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if (mRawImageCallbackBuffers.isEmpty()) {
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env->CallStaticVoidMethod(mCameraJClass, fields.post_event,
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mCameraJObjectWeak, dataMsgType, 0, 0, NULL);
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} else {
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copyAndPost(env, dataPtr, dataMsgType);
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}
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break;
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// There is no data.
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case 0:
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break;
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default:
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ALOGV("dataCallback(%d, %p)", dataMsgType, dataPtr.get());
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copyAndPost(env, dataPtr, dataMsgType);
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break;
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}
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// post frame metadata to Java
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if (metadata && (msgType & CAMERA_MSG_PREVIEW_METADATA)) {
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postMetadata(env, CAMERA_MSG_PREVIEW_METADATA, metadata);
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}
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}
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void JNICameraContext::postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr)
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{
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// TODO: plumb up to Java. For now, just drop the timestamp
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postData(msgType, dataPtr, NULL);
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}
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void JNICameraContext::postRecordingFrameHandleTimestamp(nsecs_t, native_handle_t* handle) {
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// Video buffers are not needed at app layer so just return the video buffers here.
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// This may be called when stagefright just releases camera but there are still outstanding
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// video buffers.
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if (mCamera != nullptr) {
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mCamera->releaseRecordingFrameHandle(handle);
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} else {
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native_handle_close(handle);
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native_handle_delete(handle);
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}
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}
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void JNICameraContext::postRecordingFrameHandleTimestampBatch(
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const std::vector<nsecs_t>&,
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const std::vector<native_handle_t*>& handles) {
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// Video buffers are not needed at app layer so just return the video buffers here.
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// This may be called when stagefright just releases camera but there are still outstanding
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// video buffers.
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if (mCamera != nullptr) {
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mCamera->releaseRecordingFrameHandleBatch(handles);
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} else {
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for (auto& handle : handles) {
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native_handle_close(handle);
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native_handle_delete(handle);
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}
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}
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}
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void JNICameraContext::postMetadata(JNIEnv *env, int32_t msgType, camera_frame_metadata_t *metadata)
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{
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jobjectArray obj = NULL;
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obj = (jobjectArray) env->NewObjectArray(metadata->number_of_faces,
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mFaceClass, NULL);
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if (obj == NULL) {
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ALOGE("Couldn't allocate face metadata array");
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return;
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}
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for (int i = 0; i < metadata->number_of_faces; i++) {
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jobject face = env->NewObject(mFaceClass, fields.face_constructor);
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env->SetObjectArrayElement(obj, i, face);
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jobject rect = env->NewObject(mRectClass, fields.rect_constructor);
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env->SetIntField(rect, fields.rect_left, metadata->faces[i].rect[0]);
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env->SetIntField(rect, fields.rect_top, metadata->faces[i].rect[1]);
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env->SetIntField(rect, fields.rect_right, metadata->faces[i].rect[2]);
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env->SetIntField(rect, fields.rect_bottom, metadata->faces[i].rect[3]);
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env->SetObjectField(face, fields.face_rect, rect);
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env->SetIntField(face, fields.face_score, metadata->faces[i].score);
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bool optionalFields = metadata->faces[i].id != 0
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&& metadata->faces[i].left_eye[0] != -2000 && metadata->faces[i].left_eye[1] != -2000
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&& metadata->faces[i].right_eye[0] != -2000 && metadata->faces[i].right_eye[1] != -2000
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&& metadata->faces[i].mouth[0] != -2000 && metadata->faces[i].mouth[1] != -2000;
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if (optionalFields) {
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int32_t id = metadata->faces[i].id;
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env->SetIntField(face, fields.face_id, id);
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jobject leftEye = env->NewObject(mPointClass, fields.point_constructor);
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env->SetIntField(leftEye, fields.point_x, metadata->faces[i].left_eye[0]);
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env->SetIntField(leftEye, fields.point_y, metadata->faces[i].left_eye[1]);
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env->SetObjectField(face, fields.face_left_eye, leftEye);
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env->DeleteLocalRef(leftEye);
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jobject rightEye = env->NewObject(mPointClass, fields.point_constructor);
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env->SetIntField(rightEye, fields.point_x, metadata->faces[i].right_eye[0]);
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env->SetIntField(rightEye, fields.point_y, metadata->faces[i].right_eye[1]);
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env->SetObjectField(face, fields.face_right_eye, rightEye);
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env->DeleteLocalRef(rightEye);
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jobject mouth = env->NewObject(mPointClass, fields.point_constructor);
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env->SetIntField(mouth, fields.point_x, metadata->faces[i].mouth[0]);
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env->SetIntField(mouth, fields.point_y, metadata->faces[i].mouth[1]);
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env->SetObjectField(face, fields.face_mouth, mouth);
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env->DeleteLocalRef(mouth);
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}
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env->DeleteLocalRef(face);
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env->DeleteLocalRef(rect);
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}
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env->CallStaticVoidMethod(mCameraJClass, fields.post_event,
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mCameraJObjectWeak, msgType, 0, 0, obj);
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env->DeleteLocalRef(obj);
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}
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void JNICameraContext::setCallbackMode(JNIEnv *env, bool installed, bool manualMode)
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{
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Mutex::Autolock _l(mLock);
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mManualBufferMode = manualMode;
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mManualCameraCallbackSet = false;
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// In order to limit the over usage of binder threads, all non-manual buffer
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// callbacks use CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER mode now.
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//
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// Continuous callbacks will have the callback re-registered from handleMessage.
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// Manual buffer mode will operate as fast as possible, relying on the finite supply
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// of buffers for throttling.
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if (!installed) {
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mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_NOOP);
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clearCallbackBuffers_l(env, &mCallbackBuffers);
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} else if (mManualBufferMode) {
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if (!mCallbackBuffers.isEmpty()) {
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mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_CAMERA);
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mManualCameraCallbackSet = true;
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}
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} else {
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mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER);
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clearCallbackBuffers_l(env, &mCallbackBuffers);
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}
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}
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void JNICameraContext::addCallbackBuffer(
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JNIEnv *env, jbyteArray cbb, int msgType)
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{
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ALOGV("addCallbackBuffer: 0x%x", msgType);
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if (cbb != NULL) {
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Mutex::Autolock _l(mLock);
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switch (msgType) {
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case CAMERA_MSG_PREVIEW_FRAME: {
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jbyteArray callbackBuffer = (jbyteArray)env->NewGlobalRef(cbb);
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mCallbackBuffers.push(callbackBuffer);
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ALOGV("Adding callback buffer to queue, %zu total",
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mCallbackBuffers.size());
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// We want to make sure the camera knows we're ready for the
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// next frame. This may have come unset had we not had a
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// callbackbuffer ready for it last time.
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if (mManualBufferMode && !mManualCameraCallbackSet) {
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mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_CAMERA);
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mManualCameraCallbackSet = true;
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}
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break;
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}
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case CAMERA_MSG_RAW_IMAGE: {
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jbyteArray callbackBuffer = (jbyteArray)env->NewGlobalRef(cbb);
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mRawImageCallbackBuffers.push(callbackBuffer);
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break;
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}
|
default: {
|
jniThrowException(env,
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"java/lang/IllegalArgumentException",
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"Unsupported message type");
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return;
|
}
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}
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} else {
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ALOGE("Null byte array!");
|
}
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}
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void JNICameraContext::clearCallbackBuffers_l(JNIEnv *env)
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{
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clearCallbackBuffers_l(env, &mCallbackBuffers);
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clearCallbackBuffers_l(env, &mRawImageCallbackBuffers);
|
}
|
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void JNICameraContext::clearCallbackBuffers_l(JNIEnv *env, Vector<jbyteArray> *buffers) {
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ALOGV("Clearing callback buffers, %zu remained", buffers->size());
|
while (!buffers->isEmpty()) {
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env->DeleteGlobalRef(buffers->top());
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buffers->pop();
|
}
|
}
|
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static jint android_hardware_Camera_getNumberOfCameras(JNIEnv *env, jobject thiz)
|
{
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return Camera::getNumberOfCameras();
|
}
|
|
static void android_hardware_Camera_getCameraInfo(JNIEnv *env, jobject thiz,
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jint cameraId, jobject info_obj)
|
{
|
CameraInfo cameraInfo;
|
if (cameraId >= Camera::getNumberOfCameras() || cameraId < 0) {
|
ALOGE("%s: Unknown camera ID %d", __FUNCTION__, cameraId);
|
jniThrowRuntimeException(env, "Unknown camera ID");
|
return;
|
}
|
|
status_t rc = Camera::getCameraInfo(cameraId, &cameraInfo);
|
if (rc != NO_ERROR) {
|
jniThrowRuntimeException(env, "Fail to get camera info");
|
return;
|
}
|
env->SetIntField(info_obj, fields.facing, cameraInfo.facing);
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env->SetIntField(info_obj, fields.orientation, cameraInfo.orientation);
|
|
char value[PROPERTY_VALUE_MAX];
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property_get("ro.camera.sound.forced", value, "0");
|
jboolean canDisableShutterSound = (strncmp(value, "0", 2) == 0);
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env->SetBooleanField(info_obj, fields.canDisableShutterSound,
|
canDisableShutterSound);
|
}
|
|
// connect to camera service
|
static jint android_hardware_Camera_native_setup(JNIEnv *env, jobject thiz,
|
jobject weak_this, jint cameraId, jint halVersion, jstring clientPackageName)
|
{
|
// Convert jstring to String16
|
const char16_t *rawClientName = reinterpret_cast<const char16_t*>(
|
env->GetStringChars(clientPackageName, NULL));
|
jsize rawClientNameLen = env->GetStringLength(clientPackageName);
|
String16 clientName(rawClientName, rawClientNameLen);
|
env->ReleaseStringChars(clientPackageName,
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reinterpret_cast<const jchar*>(rawClientName));
|
|
sp<Camera> camera;
|
if (halVersion == CAMERA_HAL_API_VERSION_NORMAL_CONNECT) {
|
// Default path: hal version is don't care, do normal camera connect.
|
camera = Camera::connect(cameraId, clientName,
|
Camera::USE_CALLING_UID, Camera::USE_CALLING_PID);
|
} else {
|
jint status = Camera::connectLegacy(cameraId, halVersion, clientName,
|
Camera::USE_CALLING_UID, camera);
|
if (status != NO_ERROR) {
|
return status;
|
}
|
}
|
|
if (camera == NULL) {
|
return -EACCES;
|
}
|
|
// make sure camera hardware is alive
|
if (camera->getStatus() != NO_ERROR) {
|
return NO_INIT;
|
}
|
|
jclass clazz = env->GetObjectClass(thiz);
|
if (clazz == NULL) {
|
// This should never happen
|
jniThrowRuntimeException(env, "Can't find android/hardware/Camera");
|
return INVALID_OPERATION;
|
}
|
|
// We use a weak reference so the Camera object can be garbage collected.
|
// The reference is only used as a proxy for callbacks.
|
sp<JNICameraContext> context = new JNICameraContext(env, weak_this, clazz, camera);
|
context->incStrong((void*)android_hardware_Camera_native_setup);
|
camera->setListener(context);
|
|
// save context in opaque field
|
env->SetLongField(thiz, fields.context, (jlong)context.get());
|
|
// Update default display orientation in case the sensor is reverse-landscape
|
CameraInfo cameraInfo;
|
status_t rc = Camera::getCameraInfo(cameraId, &cameraInfo);
|
if (rc != NO_ERROR) {
|
ALOGE("%s: getCameraInfo error: %d", __FUNCTION__, rc);
|
return rc;
|
}
|
int defaultOrientation = 0;
|
switch (cameraInfo.orientation) {
|
case 0:
|
break;
|
case 90:
|
if (cameraInfo.facing == CAMERA_FACING_FRONT) {
|
defaultOrientation = 180;
|
}
|
break;
|
case 180:
|
defaultOrientation = 180;
|
break;
|
case 270:
|
if (cameraInfo.facing != CAMERA_FACING_FRONT) {
|
defaultOrientation = 180;
|
}
|
break;
|
default:
|
ALOGE("Unexpected camera orientation %d!", cameraInfo.orientation);
|
break;
|
}
|
if (defaultOrientation != 0) {
|
ALOGV("Setting default display orientation to %d", defaultOrientation);
|
rc = camera->sendCommand(CAMERA_CMD_SET_DISPLAY_ORIENTATION,
|
defaultOrientation, 0);
|
if (rc != NO_ERROR) {
|
ALOGE("Unable to update default orientation: %s (%d)",
|
strerror(-rc), rc);
|
return rc;
|
}
|
}
|
|
return NO_ERROR;
|
}
|
|
// disconnect from camera service
|
// It's okay to call this when the native camera context is already null.
|
// This handles the case where the user has called release() and the
|
// finalizer is invoked later.
|
static void android_hardware_Camera_release(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("release camera");
|
JNICameraContext* context = NULL;
|
sp<Camera> camera;
|
{
|
Mutex::Autolock _l(sLock);
|
context = reinterpret_cast<JNICameraContext*>(env->GetLongField(thiz, fields.context));
|
|
// Make sure we do not attempt to callback on a deleted Java object.
|
env->SetLongField(thiz, fields.context, 0);
|
}
|
|
// clean up if release has not been called before
|
if (context != NULL) {
|
camera = context->getCamera();
|
context->release();
|
ALOGV("native_release: context=%p camera=%p", context, camera.get());
|
|
// clear callbacks
|
if (camera != NULL) {
|
camera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_NOOP);
|
camera->disconnect();
|
}
|
|
// remove context to prevent further Java access
|
context->decStrong((void*)android_hardware_Camera_native_setup);
|
}
|
}
|
|
static void android_hardware_Camera_setPreviewSurface(JNIEnv *env, jobject thiz, jobject jSurface)
|
{
|
ALOGV("setPreviewSurface");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
sp<IGraphicBufferProducer> gbp;
|
sp<Surface> surface;
|
if (jSurface) {
|
surface = android_view_Surface_getSurface(env, jSurface);
|
if (surface != NULL) {
|
gbp = surface->getIGraphicBufferProducer();
|
}
|
}
|
|
if (camera->setPreviewTarget(gbp) != NO_ERROR) {
|
jniThrowException(env, "java/io/IOException", "setPreviewTexture failed");
|
}
|
}
|
|
static void android_hardware_Camera_setPreviewTexture(JNIEnv *env,
|
jobject thiz, jobject jSurfaceTexture)
|
{
|
ALOGV("setPreviewTexture");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
sp<IGraphicBufferProducer> producer = NULL;
|
if (jSurfaceTexture != NULL) {
|
producer = SurfaceTexture_getProducer(env, jSurfaceTexture);
|
if (producer == NULL) {
|
jniThrowException(env, "java/lang/IllegalArgumentException",
|
"SurfaceTexture already released in setPreviewTexture");
|
return;
|
}
|
|
}
|
|
if (camera->setPreviewTarget(producer) != NO_ERROR) {
|
jniThrowException(env, "java/io/IOException",
|
"setPreviewTexture failed");
|
}
|
}
|
|
static void android_hardware_Camera_setPreviewCallbackSurface(JNIEnv *env,
|
jobject thiz, jobject jSurface)
|
{
|
ALOGV("setPreviewCallbackSurface");
|
JNICameraContext* context;
|
sp<Camera> camera = get_native_camera(env, thiz, &context);
|
if (camera == 0) return;
|
|
sp<IGraphicBufferProducer> gbp;
|
sp<Surface> surface;
|
if (jSurface) {
|
surface = android_view_Surface_getSurface(env, jSurface);
|
if (surface != NULL) {
|
gbp = surface->getIGraphicBufferProducer();
|
}
|
}
|
// Clear out normal preview callbacks
|
context->setCallbackMode(env, false, false);
|
// Then set up callback surface
|
if (camera->setPreviewCallbackTarget(gbp) != NO_ERROR) {
|
jniThrowException(env, "java/io/IOException", "setPreviewCallbackTarget failed");
|
}
|
}
|
|
static void android_hardware_Camera_startPreview(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("startPreview");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->startPreview() != NO_ERROR) {
|
jniThrowRuntimeException(env, "startPreview failed");
|
return;
|
}
|
}
|
|
static void android_hardware_Camera_stopPreview(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("stopPreview");
|
sp<Camera> c = get_native_camera(env, thiz, NULL);
|
if (c == 0) return;
|
|
c->stopPreview();
|
}
|
|
static jboolean android_hardware_Camera_previewEnabled(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("previewEnabled");
|
sp<Camera> c = get_native_camera(env, thiz, NULL);
|
if (c == 0) return JNI_FALSE;
|
|
return c->previewEnabled() ? JNI_TRUE : JNI_FALSE;
|
}
|
|
static void android_hardware_Camera_setHasPreviewCallback(JNIEnv *env, jobject thiz, jboolean installed, jboolean manualBuffer)
|
{
|
ALOGV("setHasPreviewCallback: installed:%d, manualBuffer:%d", (int)installed, (int)manualBuffer);
|
// Important: Only install preview_callback if the Java code has called
|
// setPreviewCallback() with a non-null value, otherwise we'd pay to memcpy
|
// each preview frame for nothing.
|
JNICameraContext* context;
|
sp<Camera> camera = get_native_camera(env, thiz, &context);
|
if (camera == 0) return;
|
|
// setCallbackMode will take care of setting the context flags and calling
|
// camera->setPreviewCallbackFlags within a mutex for us.
|
context->setCallbackMode(env, installed, manualBuffer);
|
}
|
|
static void android_hardware_Camera_addCallbackBuffer(JNIEnv *env, jobject thiz, jbyteArray bytes, jint msgType) {
|
ALOGV("addCallbackBuffer: 0x%x", msgType);
|
|
JNICameraContext* context = reinterpret_cast<JNICameraContext*>(env->GetLongField(thiz, fields.context));
|
|
if (context != NULL) {
|
context->addCallbackBuffer(env, bytes, msgType);
|
}
|
}
|
|
static void android_hardware_Camera_autoFocus(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("autoFocus");
|
JNICameraContext* context;
|
sp<Camera> c = get_native_camera(env, thiz, &context);
|
if (c == 0) return;
|
|
if (c->autoFocus() != NO_ERROR) {
|
jniThrowRuntimeException(env, "autoFocus failed");
|
}
|
}
|
|
static void android_hardware_Camera_cancelAutoFocus(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("cancelAutoFocus");
|
JNICameraContext* context;
|
sp<Camera> c = get_native_camera(env, thiz, &context);
|
if (c == 0) return;
|
|
if (c->cancelAutoFocus() != NO_ERROR) {
|
jniThrowRuntimeException(env, "cancelAutoFocus failed");
|
}
|
}
|
|
static void android_hardware_Camera_takePicture(JNIEnv *env, jobject thiz, jint msgType)
|
{
|
ALOGV("takePicture");
|
JNICameraContext* context;
|
sp<Camera> camera = get_native_camera(env, thiz, &context);
|
if (camera == 0) return;
|
|
/*
|
* When CAMERA_MSG_RAW_IMAGE is requested, if the raw image callback
|
* buffer is available, CAMERA_MSG_RAW_IMAGE is enabled to get the
|
* notification _and_ the data; otherwise, CAMERA_MSG_RAW_IMAGE_NOTIFY
|
* is enabled to receive the callback notification but no data.
|
*
|
* Note that CAMERA_MSG_RAW_IMAGE_NOTIFY is not exposed to the
|
* Java application.
|
*/
|
if (msgType & CAMERA_MSG_RAW_IMAGE) {
|
ALOGV("Enable raw image callback buffer");
|
if (!context->isRawImageCallbackBufferAvailable()) {
|
ALOGV("Enable raw image notification, since no callback buffer exists");
|
msgType &= ~CAMERA_MSG_RAW_IMAGE;
|
msgType |= CAMERA_MSG_RAW_IMAGE_NOTIFY;
|
}
|
}
|
|
if (camera->takePicture(msgType) != NO_ERROR) {
|
jniThrowRuntimeException(env, "takePicture failed");
|
return;
|
}
|
}
|
|
static void android_hardware_Camera_setParameters(JNIEnv *env, jobject thiz, jstring params)
|
{
|
ALOGV("setParameters");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
const jchar* str = env->GetStringCritical(params, 0);
|
String8 params8;
|
if (params) {
|
params8 = String8(reinterpret_cast<const char16_t*>(str),
|
env->GetStringLength(params));
|
env->ReleaseStringCritical(params, str);
|
}
|
if (camera->setParameters(params8) != NO_ERROR) {
|
jniThrowRuntimeException(env, "setParameters failed");
|
return;
|
}
|
}
|
|
static jstring android_hardware_Camera_getParameters(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("getParameters");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return 0;
|
|
String8 params8 = camera->getParameters();
|
if (params8.isEmpty()) {
|
jniThrowRuntimeException(env, "getParameters failed (empty parameters)");
|
return 0;
|
}
|
return env->NewStringUTF(params8.string());
|
}
|
|
static void android_hardware_Camera_reconnect(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("reconnect");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->reconnect() != NO_ERROR) {
|
jniThrowException(env, "java/io/IOException", "reconnect failed");
|
return;
|
}
|
}
|
|
static void android_hardware_Camera_lock(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("lock");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->lock() != NO_ERROR) {
|
jniThrowRuntimeException(env, "lock failed");
|
}
|
}
|
|
static void android_hardware_Camera_unlock(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("unlock");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->unlock() != NO_ERROR) {
|
jniThrowRuntimeException(env, "unlock failed");
|
}
|
}
|
|
static void android_hardware_Camera_startSmoothZoom(JNIEnv *env, jobject thiz, jint value)
|
{
|
ALOGV("startSmoothZoom");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
status_t rc = camera->sendCommand(CAMERA_CMD_START_SMOOTH_ZOOM, value, 0);
|
if (rc == BAD_VALUE) {
|
char msg[64];
|
sprintf(msg, "invalid zoom value=%d", value);
|
jniThrowException(env, "java/lang/IllegalArgumentException", msg);
|
} else if (rc != NO_ERROR) {
|
jniThrowRuntimeException(env, "start smooth zoom failed");
|
}
|
}
|
|
static void android_hardware_Camera_stopSmoothZoom(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("stopSmoothZoom");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->sendCommand(CAMERA_CMD_STOP_SMOOTH_ZOOM, 0, 0) != NO_ERROR) {
|
jniThrowRuntimeException(env, "stop smooth zoom failed");
|
}
|
}
|
|
static void android_hardware_Camera_setDisplayOrientation(JNIEnv *env, jobject thiz,
|
jint value)
|
{
|
ALOGV("setDisplayOrientation");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->sendCommand(CAMERA_CMD_SET_DISPLAY_ORIENTATION, value, 0) != NO_ERROR) {
|
jniThrowRuntimeException(env, "set display orientation failed");
|
}
|
}
|
|
static jboolean android_hardware_Camera_enableShutterSound(JNIEnv *env, jobject thiz,
|
jboolean enabled)
|
{
|
ALOGV("enableShutterSound");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return JNI_FALSE;
|
|
int32_t value = (enabled == JNI_TRUE) ? 1 : 0;
|
status_t rc = camera->sendCommand(CAMERA_CMD_ENABLE_SHUTTER_SOUND, value, 0);
|
if (rc == NO_ERROR) {
|
return JNI_TRUE;
|
} else if (rc == PERMISSION_DENIED) {
|
return JNI_FALSE;
|
} else {
|
jniThrowRuntimeException(env, "enable shutter sound failed");
|
return JNI_FALSE;
|
}
|
}
|
|
static void android_hardware_Camera_startFaceDetection(JNIEnv *env, jobject thiz,
|
jint type)
|
{
|
ALOGV("startFaceDetection");
|
JNICameraContext* context;
|
sp<Camera> camera = get_native_camera(env, thiz, &context);
|
if (camera == 0) return;
|
|
status_t rc = camera->sendCommand(CAMERA_CMD_START_FACE_DETECTION, type, 0);
|
if (rc == BAD_VALUE) {
|
char msg[64];
|
snprintf(msg, sizeof(msg), "invalid face detection type=%d", type);
|
jniThrowException(env, "java/lang/IllegalArgumentException", msg);
|
} else if (rc != NO_ERROR) {
|
jniThrowRuntimeException(env, "start face detection failed");
|
}
|
}
|
|
static void android_hardware_Camera_stopFaceDetection(JNIEnv *env, jobject thiz)
|
{
|
ALOGV("stopFaceDetection");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->sendCommand(CAMERA_CMD_STOP_FACE_DETECTION, 0, 0) != NO_ERROR) {
|
jniThrowRuntimeException(env, "stop face detection failed");
|
}
|
}
|
|
static void android_hardware_Camera_enableFocusMoveCallback(JNIEnv *env, jobject thiz, jint enable)
|
{
|
ALOGV("enableFocusMoveCallback");
|
sp<Camera> camera = get_native_camera(env, thiz, NULL);
|
if (camera == 0) return;
|
|
if (camera->sendCommand(CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG, enable, 0) != NO_ERROR) {
|
jniThrowRuntimeException(env, "enable focus move callback failed");
|
}
|
}
|
|
//-------------------------------------------------
|
|
static const JNINativeMethod camMethods[] = {
|
{ "getNumberOfCameras",
|
"()I",
|
(void *)android_hardware_Camera_getNumberOfCameras },
|
{ "_getCameraInfo",
|
"(ILandroid/hardware/Camera$CameraInfo;)V",
|
(void*)android_hardware_Camera_getCameraInfo },
|
{ "native_setup",
|
"(Ljava/lang/Object;IILjava/lang/String;)I",
|
(void*)android_hardware_Camera_native_setup },
|
{ "native_release",
|
"()V",
|
(void*)android_hardware_Camera_release },
|
{ "setPreviewSurface",
|
"(Landroid/view/Surface;)V",
|
(void *)android_hardware_Camera_setPreviewSurface },
|
{ "setPreviewTexture",
|
"(Landroid/graphics/SurfaceTexture;)V",
|
(void *)android_hardware_Camera_setPreviewTexture },
|
{ "setPreviewCallbackSurface",
|
"(Landroid/view/Surface;)V",
|
(void *)android_hardware_Camera_setPreviewCallbackSurface },
|
{ "startPreview",
|
"()V",
|
(void *)android_hardware_Camera_startPreview },
|
{ "_stopPreview",
|
"()V",
|
(void *)android_hardware_Camera_stopPreview },
|
{ "previewEnabled",
|
"()Z",
|
(void *)android_hardware_Camera_previewEnabled },
|
{ "setHasPreviewCallback",
|
"(ZZ)V",
|
(void *)android_hardware_Camera_setHasPreviewCallback },
|
{ "_addCallbackBuffer",
|
"([BI)V",
|
(void *)android_hardware_Camera_addCallbackBuffer },
|
{ "native_autoFocus",
|
"()V",
|
(void *)android_hardware_Camera_autoFocus },
|
{ "native_cancelAutoFocus",
|
"()V",
|
(void *)android_hardware_Camera_cancelAutoFocus },
|
{ "native_takePicture",
|
"(I)V",
|
(void *)android_hardware_Camera_takePicture },
|
{ "native_setParameters",
|
"(Ljava/lang/String;)V",
|
(void *)android_hardware_Camera_setParameters },
|
{ "native_getParameters",
|
"()Ljava/lang/String;",
|
(void *)android_hardware_Camera_getParameters },
|
{ "reconnect",
|
"()V",
|
(void*)android_hardware_Camera_reconnect },
|
{ "lock",
|
"()V",
|
(void*)android_hardware_Camera_lock },
|
{ "unlock",
|
"()V",
|
(void*)android_hardware_Camera_unlock },
|
{ "startSmoothZoom",
|
"(I)V",
|
(void *)android_hardware_Camera_startSmoothZoom },
|
{ "stopSmoothZoom",
|
"()V",
|
(void *)android_hardware_Camera_stopSmoothZoom },
|
{ "setDisplayOrientation",
|
"(I)V",
|
(void *)android_hardware_Camera_setDisplayOrientation },
|
{ "_enableShutterSound",
|
"(Z)Z",
|
(void *)android_hardware_Camera_enableShutterSound },
|
{ "_startFaceDetection",
|
"(I)V",
|
(void *)android_hardware_Camera_startFaceDetection },
|
{ "_stopFaceDetection",
|
"()V",
|
(void *)android_hardware_Camera_stopFaceDetection},
|
{ "enableFocusMoveCallback",
|
"(I)V",
|
(void *)android_hardware_Camera_enableFocusMoveCallback},
|
};
|
|
struct field {
|
const char *class_name;
|
const char *field_name;
|
const char *field_type;
|
jfieldID *jfield;
|
};
|
|
static void find_fields(JNIEnv *env, field *fields, int count)
|
{
|
for (int i = 0; i < count; i++) {
|
field *f = &fields[i];
|
jclass clazz = FindClassOrDie(env, f->class_name);
|
jfieldID field = GetFieldIDOrDie(env, clazz, f->field_name, f->field_type);
|
*(f->jfield) = field;
|
}
|
}
|
|
// Get all the required offsets in java class and register native functions
|
int register_android_hardware_Camera(JNIEnv *env)
|
{
|
field fields_to_find[] = {
|
{ "android/hardware/Camera", "mNativeContext", "J", &fields.context },
|
{ "android/hardware/Camera$CameraInfo", "facing", "I", &fields.facing },
|
{ "android/hardware/Camera$CameraInfo", "orientation", "I", &fields.orientation },
|
{ "android/hardware/Camera$CameraInfo", "canDisableShutterSound", "Z",
|
&fields.canDisableShutterSound },
|
{ "android/hardware/Camera$Face", "rect", "Landroid/graphics/Rect;", &fields.face_rect },
|
{ "android/hardware/Camera$Face", "leftEye", "Landroid/graphics/Point;", &fields.face_left_eye},
|
{ "android/hardware/Camera$Face", "rightEye", "Landroid/graphics/Point;", &fields.face_right_eye},
|
{ "android/hardware/Camera$Face", "mouth", "Landroid/graphics/Point;", &fields.face_mouth},
|
{ "android/hardware/Camera$Face", "score", "I", &fields.face_score },
|
{ "android/hardware/Camera$Face", "id", "I", &fields.face_id},
|
{ "android/graphics/Rect", "left", "I", &fields.rect_left },
|
{ "android/graphics/Rect", "top", "I", &fields.rect_top },
|
{ "android/graphics/Rect", "right", "I", &fields.rect_right },
|
{ "android/graphics/Rect", "bottom", "I", &fields.rect_bottom },
|
{ "android/graphics/Point", "x", "I", &fields.point_x},
|
{ "android/graphics/Point", "y", "I", &fields.point_y},
|
};
|
|
find_fields(env, fields_to_find, NELEM(fields_to_find));
|
|
jclass clazz = FindClassOrDie(env, "android/hardware/Camera");
|
fields.post_event = GetStaticMethodIDOrDie(env, clazz, "postEventFromNative",
|
"(Ljava/lang/Object;IIILjava/lang/Object;)V");
|
|
clazz = FindClassOrDie(env, "android/graphics/Rect");
|
fields.rect_constructor = GetMethodIDOrDie(env, clazz, "<init>", "()V");
|
|
clazz = FindClassOrDie(env, "android/hardware/Camera$Face");
|
fields.face_constructor = GetMethodIDOrDie(env, clazz, "<init>", "()V");
|
|
clazz = env->FindClass("android/graphics/Point");
|
fields.point_constructor = env->GetMethodID(clazz, "<init>", "()V");
|
if (fields.point_constructor == NULL) {
|
ALOGE("Can't find android/graphics/Point()");
|
return -1;
|
}
|
|
// Register native functions
|
return RegisterMethodsOrDie(env, "android/hardware/Camera", camMethods, NELEM(camMethods));
|
}
|
