| /* |
| ** |
| ** Copyright 2008, 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 "Camera-JNI" |
| #include <utils/Log.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include "android_runtime/AndroidRuntime.h" |
| |
| #include <utils/Vector.h> |
| |
| #include <gui/SurfaceTexture.h> |
| #include <surfaceflinger/Surface.h> |
| #include <camera/Camera.h> |
| #include <binder/IMemory.h> |
| |
| using namespace android; |
| |
| struct fields_t { |
| jfieldID context; |
| jfieldID surface; |
| jfieldID surfaceTexture; |
| jfieldID facing; |
| jfieldID orientation; |
| jfieldID face_rect; |
| jfieldID face_score; |
| jfieldID rect_left; |
| jfieldID rect_top; |
| jfieldID rect_right; |
| jfieldID rect_bottom; |
| jmethodID post_event; |
| jmethodID rect_constructor; |
| jmethodID face_constructor; |
| }; |
| |
| static fields_t fields; |
| static Mutex sLock; |
| |
| // provides persistent context for calls from native code to Java |
| class JNICameraContext: public CameraListener |
| { |
| public: |
| JNICameraContext(JNIEnv* env, jobject weak_this, jclass clazz, const sp<Camera>& camera); |
| ~JNICameraContext() { release(); } |
| virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2); |
| virtual void postData(int32_t msgType, const sp<IMemory>& dataPtr, |
| camera_frame_metadata_t *metadata); |
| virtual void postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr); |
| void postMetadata(JNIEnv *env, int32_t msgType, camera_frame_metadata_t *metadata); |
| void addCallbackBuffer(JNIEnv *env, jbyteArray cbb, int msgType); |
| void setCallbackMode(JNIEnv *env, bool installed, bool manualMode); |
| sp<Camera> getCamera() { Mutex::Autolock _l(mLock); return mCamera; } |
| bool isRawImageCallbackBufferAvailable() const; |
| void release(); |
| |
| private: |
| void copyAndPost(JNIEnv* env, const sp<IMemory>& dataPtr, int msgType); |
| void clearCallbackBuffers_l(JNIEnv *env, Vector<jbyteArray> *buffers); |
| void clearCallbackBuffers_l(JNIEnv *env); |
| jbyteArray getCallbackBuffer(JNIEnv *env, Vector<jbyteArray> *buffers, size_t bufferSize); |
| |
| jobject mCameraJObjectWeak; // weak reference to java object |
| jclass mCameraJClass; // strong reference to java class |
| sp<Camera> mCamera; // strong reference to native object |
| jclass mFaceClass; // strong reference to Face class |
| jclass mRectClass; // strong reference to Rect class |
| Mutex mLock; |
| |
| /* |
| * Global reference application-managed raw image buffer queue. |
| * |
| * Manual-only mode is supported for raw image callbacks, which is |
| * set whenever method addCallbackBuffer() with msgType = |
| * CAMERA_MSG_RAW_IMAGE is called; otherwise, null is returned |
| * with raw image callbacks. |
| */ |
| Vector<jbyteArray> mRawImageCallbackBuffers; |
| |
| /* |
| * Application-managed preview buffer queue and the flags |
| * associated with the usage of the preview buffer callback. |
| */ |
| Vector<jbyteArray> mCallbackBuffers; // Global reference application managed byte[] |
| bool mManualBufferMode; // Whether to use application managed buffers. |
| bool mManualCameraCallbackSet; // Whether the callback has been set, used to |
| // reduce unnecessary calls to set the callback. |
| }; |
| |
| bool JNICameraContext::isRawImageCallbackBufferAvailable() const |
| { |
| return !mRawImageCallbackBuffers.isEmpty(); |
| } |
| |
| sp<Camera> get_native_camera(JNIEnv *env, jobject thiz, JNICameraContext** pContext) |
| { |
| sp<Camera> camera; |
| Mutex::Autolock _l(sLock); |
| JNICameraContext* context = reinterpret_cast<JNICameraContext*>(env->GetIntField(thiz, fields.context)); |
| if (context != NULL) { |
| camera = context->getCamera(); |
| } |
| ALOGV("get_native_camera: context=%p, camera=%p", context, camera.get()); |
| if (camera == 0) { |
| jniThrowRuntimeException(env, "Method called after release()"); |
| } |
| |
| if (pContext != NULL) *pContext = context; |
| return camera; |
| } |
| |
| JNICameraContext::JNICameraContext(JNIEnv* env, jobject weak_this, jclass clazz, const sp<Camera>& camera) |
| { |
| mCameraJObjectWeak = env->NewGlobalRef(weak_this); |
| mCameraJClass = (jclass)env->NewGlobalRef(clazz); |
| mCamera = camera; |
| |
| jclass faceClazz = env->FindClass("android/hardware/Camera$Face"); |
| mFaceClass = (jclass) env->NewGlobalRef(faceClazz); |
| |
| jclass rectClazz = env->FindClass("android/graphics/Rect"); |
| mRectClass = (jclass) env->NewGlobalRef(rectClazz); |
| |
| mManualBufferMode = false; |
| mManualCameraCallbackSet = false; |
| } |
| |
| void JNICameraContext::release() |
| { |
| ALOGV("release"); |
| Mutex::Autolock _l(mLock); |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| |
| if (mCameraJObjectWeak != NULL) { |
| env->DeleteGlobalRef(mCameraJObjectWeak); |
| mCameraJObjectWeak = NULL; |
| } |
| if (mCameraJClass != NULL) { |
| env->DeleteGlobalRef(mCameraJClass); |
| mCameraJClass = NULL; |
| } |
| if (mFaceClass != NULL) { |
| env->DeleteGlobalRef(mFaceClass); |
| mFaceClass = NULL; |
| } |
| if (mRectClass != NULL) { |
| env->DeleteGlobalRef(mRectClass); |
| mRectClass = NULL; |
| } |
| clearCallbackBuffers_l(env); |
| mCamera.clear(); |
| } |
| |
| void JNICameraContext::notify(int32_t msgType, int32_t ext1, int32_t ext2) |
| { |
| ALOGV("notify"); |
| |
| // VM pointer will be NULL if object is released |
| Mutex::Autolock _l(mLock); |
| if (mCameraJObjectWeak == NULL) { |
| ALOGW("callback on dead camera object"); |
| return; |
| } |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| |
| /* |
| * If the notification or msgType is CAMERA_MSG_RAW_IMAGE_NOTIFY, change it |
| * to CAMERA_MSG_RAW_IMAGE since CAMERA_MSG_RAW_IMAGE_NOTIFY is not exposed |
| * to the Java app. |
| */ |
| if (msgType == CAMERA_MSG_RAW_IMAGE_NOTIFY) { |
| msgType = CAMERA_MSG_RAW_IMAGE; |
| } |
| |
| env->CallStaticVoidMethod(mCameraJClass, fields.post_event, |
| mCameraJObjectWeak, msgType, ext1, ext2, NULL); |
| } |
| |
| jbyteArray JNICameraContext::getCallbackBuffer( |
| JNIEnv* env, Vector<jbyteArray>* buffers, size_t bufferSize) |
| { |
| jbyteArray obj = NULL; |
| |
| // Vector access should be protected by lock in postData() |
| if (!buffers->isEmpty()) { |
| ALOGV("Using callback buffer from queue of length %d", buffers->size()); |
| jbyteArray globalBuffer = buffers->itemAt(0); |
| buffers->removeAt(0); |
| |
| obj = (jbyteArray)env->NewLocalRef(globalBuffer); |
| env->DeleteGlobalRef(globalBuffer); |
| |
| if (obj != NULL) { |
| jsize bufferLength = env->GetArrayLength(obj); |
| if ((int)bufferLength < (int)bufferSize) { |
| ALOGE("Callback buffer was too small! Expected %d bytes, but got %d bytes!", |
| bufferSize, bufferLength); |
| env->DeleteLocalRef(obj); |
| return NULL; |
| } |
| } |
| } |
| |
| return obj; |
| } |
| |
| void JNICameraContext::copyAndPost(JNIEnv* env, const sp<IMemory>& dataPtr, int msgType) |
| { |
| jbyteArray obj = NULL; |
| |
| // allocate Java byte array and copy data |
| if (dataPtr != NULL) { |
| ssize_t offset; |
| size_t size; |
| sp<IMemoryHeap> heap = dataPtr->getMemory(&offset, &size); |
| ALOGV("copyAndPost: off=%ld, size=%d", offset, size); |
| uint8_t *heapBase = (uint8_t*)heap->base(); |
| |
| if (heapBase != NULL) { |
| const jbyte* data = reinterpret_cast<const jbyte*>(heapBase + offset); |
| |
| if (msgType == CAMERA_MSG_RAW_IMAGE) { |
| obj = getCallbackBuffer(env, &mRawImageCallbackBuffers, size); |
| } else if (msgType == CAMERA_MSG_PREVIEW_FRAME && mManualBufferMode) { |
| obj = getCallbackBuffer(env, &mCallbackBuffers, size); |
| |
| if (mCallbackBuffers.isEmpty()) { |
| ALOGV("Out of buffers, clearing callback!"); |
| mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_NOOP); |
| mManualCameraCallbackSet = false; |
| |
| if (obj == NULL) { |
| return; |
| } |
| } |
| } else { |
| ALOGV("Allocating callback buffer"); |
| obj = env->NewByteArray(size); |
| } |
| |
| if (obj == NULL) { |
| ALOGE("Couldn't allocate byte array for JPEG data"); |
| env->ExceptionClear(); |
| } else { |
| env->SetByteArrayRegion(obj, 0, size, data); |
| } |
| } else { |
| ALOGE("image heap is NULL"); |
| } |
| } |
| |
| // post image data to Java |
| env->CallStaticVoidMethod(mCameraJClass, fields.post_event, |
| mCameraJObjectWeak, msgType, 0, 0, obj); |
| if (obj) { |
| env->DeleteLocalRef(obj); |
| } |
| } |
| |
| void JNICameraContext::postData(int32_t msgType, const sp<IMemory>& dataPtr, |
| camera_frame_metadata_t *metadata) |
| { |
| // VM pointer will be NULL if object is released |
| Mutex::Autolock _l(mLock); |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| if (mCameraJObjectWeak == NULL) { |
| ALOGW("callback on dead camera object"); |
| return; |
| } |
| |
| int32_t dataMsgType = msgType & ~CAMERA_MSG_PREVIEW_METADATA; |
| |
| // return data based on callback type |
| switch (dataMsgType) { |
| case CAMERA_MSG_VIDEO_FRAME: |
| // should never happen |
| break; |
| |
| // For backward-compatibility purpose, if there is no callback |
| // buffer for raw image, the callback returns null. |
| case CAMERA_MSG_RAW_IMAGE: |
| ALOGV("rawCallback"); |
| if (mRawImageCallbackBuffers.isEmpty()) { |
| env->CallStaticVoidMethod(mCameraJClass, fields.post_event, |
| mCameraJObjectWeak, dataMsgType, 0, 0, NULL); |
| } else { |
| copyAndPost(env, dataPtr, dataMsgType); |
| } |
| break; |
| |
| // There is no data. |
| case 0: |
| break; |
| |
| default: |
| ALOGV("dataCallback(%d, %p)", dataMsgType, dataPtr.get()); |
| copyAndPost(env, dataPtr, dataMsgType); |
| break; |
| } |
| |
| // post frame metadata to Java |
| if (metadata && (msgType & CAMERA_MSG_PREVIEW_METADATA)) { |
| postMetadata(env, CAMERA_MSG_PREVIEW_METADATA, metadata); |
| } |
| } |
| |
| void JNICameraContext::postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) |
| { |
| // TODO: plumb up to Java. For now, just drop the timestamp |
| postData(msgType, dataPtr, NULL); |
| } |
| |
| void JNICameraContext::postMetadata(JNIEnv *env, int32_t msgType, camera_frame_metadata_t *metadata) |
| { |
| jobjectArray obj = NULL; |
| obj = (jobjectArray) env->NewObjectArray(metadata->number_of_faces, |
| mFaceClass, NULL); |
| if (obj == NULL) { |
| ALOGE("Couldn't allocate face metadata array"); |
| return; |
| } |
| |
| for (int i = 0; i < metadata->number_of_faces; i++) { |
| jobject face = env->NewObject(mFaceClass, fields.face_constructor); |
| env->SetObjectArrayElement(obj, i, face); |
| |
| jobject rect = env->NewObject(mRectClass, fields.rect_constructor); |
| env->SetIntField(rect, fields.rect_left, metadata->faces[i].rect[0]); |
| env->SetIntField(rect, fields.rect_top, metadata->faces[i].rect[1]); |
| env->SetIntField(rect, fields.rect_right, metadata->faces[i].rect[2]); |
| env->SetIntField(rect, fields.rect_bottom, metadata->faces[i].rect[3]); |
| |
| env->SetObjectField(face, fields.face_rect, rect); |
| env->SetIntField(face, fields.face_score, metadata->faces[i].score); |
| |
| env->DeleteLocalRef(face); |
| env->DeleteLocalRef(rect); |
| } |
| env->CallStaticVoidMethod(mCameraJClass, fields.post_event, |
| mCameraJObjectWeak, msgType, 0, 0, obj); |
| env->DeleteLocalRef(obj); |
| } |
| |
| void JNICameraContext::setCallbackMode(JNIEnv *env, bool installed, bool manualMode) |
| { |
| Mutex::Autolock _l(mLock); |
| mManualBufferMode = manualMode; |
| mManualCameraCallbackSet = false; |
| |
| // In order to limit the over usage of binder threads, all non-manual buffer |
| // callbacks use CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER mode now. |
| // |
| // Continuous callbacks will have the callback re-registered from handleMessage. |
| // Manual buffer mode will operate as fast as possible, relying on the finite supply |
| // of buffers for throttling. |
| |
| if (!installed) { |
| mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_NOOP); |
| clearCallbackBuffers_l(env, &mCallbackBuffers); |
| } else if (mManualBufferMode) { |
| if (!mCallbackBuffers.isEmpty()) { |
| mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_CAMERA); |
| mManualCameraCallbackSet = true; |
| } |
| } else { |
| mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER); |
| clearCallbackBuffers_l(env, &mCallbackBuffers); |
| } |
| } |
| |
| void JNICameraContext::addCallbackBuffer( |
| JNIEnv *env, jbyteArray cbb, int msgType) |
| { |
| ALOGV("addCallbackBuffer: 0x%x", msgType); |
| if (cbb != NULL) { |
| Mutex::Autolock _l(mLock); |
| switch (msgType) { |
| case CAMERA_MSG_PREVIEW_FRAME: { |
| jbyteArray callbackBuffer = (jbyteArray)env->NewGlobalRef(cbb); |
| mCallbackBuffers.push(callbackBuffer); |
| |
| ALOGV("Adding callback buffer to queue, %d total", |
| mCallbackBuffers.size()); |
| |
| // We want to make sure the camera knows we're ready for the |
| // next frame. This may have come unset had we not had a |
| // callbackbuffer ready for it last time. |
| if (mManualBufferMode && !mManualCameraCallbackSet) { |
| mCamera->setPreviewCallbackFlags(CAMERA_FRAME_CALLBACK_FLAG_CAMERA); |
| mManualCameraCallbackSet = true; |
| } |
| break; |
| } |
| case CAMERA_MSG_RAW_IMAGE: { |
| jbyteArray callbackBuffer = (jbyteArray)env->NewGlobalRef(cbb); |
| mRawImageCallbackBuffers.push(callbackBuffer); |
| break; |
| } |
| default: { |
| jniThrowException(env, |
| "java/lang/IllegalArgumentException", |
| "Unsupported message type"); |
| return; |
| } |
| } |
| } else { |
| ALOGE("Null byte array!"); |
| } |
| } |
| |
| void JNICameraContext::clearCallbackBuffers_l(JNIEnv *env) |
| { |
| clearCallbackBuffers_l(env, &mCallbackBuffers); |
| clearCallbackBuffers_l(env, &mRawImageCallbackBuffers); |
| } |
| |
| void JNICameraContext::clearCallbackBuffers_l(JNIEnv *env, Vector<jbyteArray> *buffers) { |
| ALOGV("Clearing callback buffers, %d remained", buffers->size()); |
| while (!buffers->isEmpty()) { |
| env->DeleteGlobalRef(buffers->top()); |
| buffers->pop(); |
| } |
| } |
| |
| static jint android_hardware_Camera_getNumberOfCameras(JNIEnv *env, jobject thiz) |
| { |
| return Camera::getNumberOfCameras(); |
| } |
| |
| static void android_hardware_Camera_getCameraInfo(JNIEnv *env, jobject thiz, |
| jint cameraId, jobject info_obj) |
| { |
| CameraInfo cameraInfo; |
| 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); |
| env->SetIntField(info_obj, fields.orientation, cameraInfo.orientation); |
| } |
| |
| // connect to camera service |
| static void android_hardware_Camera_native_setup(JNIEnv *env, jobject thiz, |
| jobject weak_this, jint cameraId) |
| { |
| sp<Camera> camera = Camera::connect(cameraId); |
| |
| if (camera == NULL) { |
| jniThrowRuntimeException(env, "Fail to connect to camera service"); |
| return; |
| } |
| |
| // make sure camera hardware is alive |
| if (camera->getStatus() != NO_ERROR) { |
| jniThrowRuntimeException(env, "Camera initialization failed"); |
| return; |
| } |
| |
| jclass clazz = env->GetObjectClass(thiz); |
| if (clazz == NULL) { |
| jniThrowRuntimeException(env, "Can't find android/hardware/Camera"); |
| return; |
| } |
| |
| // 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(thiz); |
| camera->setListener(context); |
| |
| // save context in opaque field |
| env->SetIntField(thiz, fields.context, (int)context.get()); |
| } |
| |
| // 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) |
| { |
| // TODO: Change to ALOGV |
| ALOGV("release camera"); |
| JNICameraContext* context = NULL; |
| sp<Camera> camera; |
| { |
| Mutex::Autolock _l(sLock); |
| context = reinterpret_cast<JNICameraContext*>(env->GetIntField(thiz, fields.context)); |
| |
| // Make sure we do not attempt to callback on a deleted Java object. |
| env->SetIntField(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(thiz); |
| } |
| } |
| |
| static void android_hardware_Camera_setPreviewDisplay(JNIEnv *env, jobject thiz, jobject jSurface) |
| { |
| ALOGV("setPreviewDisplay"); |
| sp<Camera> camera = get_native_camera(env, thiz, NULL); |
| if (camera == 0) return; |
| |
| sp<Surface> surface = NULL; |
| if (jSurface != NULL) { |
| surface = reinterpret_cast<Surface*>(env->GetIntField(jSurface, fields.surface)); |
| } |
| if (camera->setPreviewDisplay(surface) != NO_ERROR) { |
| jniThrowException(env, "java/io/IOException", "setPreviewDisplay 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<SurfaceTexture> surfaceTexture = NULL; |
| if (jSurfaceTexture != NULL) { |
| surfaceTexture = reinterpret_cast<SurfaceTexture*>(env->GetIntField( |
| jSurfaceTexture, fields.surfaceTexture)); |
| } |
| if (camera->setPreviewTexture(surfaceTexture) != NO_ERROR) { |
| jniThrowException(env, "java/io/IOException", |
| "setPreviewTexture 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 bool android_hardware_Camera_previewEnabled(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("previewEnabled"); |
| sp<Camera> c = get_native_camera(env, thiz, NULL); |
| if (c == 0) return false; |
| |
| return c->previewEnabled(); |
| } |
| |
| 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, int msgType) { |
| ALOGV("addCallbackBuffer: 0x%x", msgType); |
| |
| JNICameraContext* context = reinterpret_cast<JNICameraContext*>(env->GetIntField(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, int 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(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; |
| |
| return env->NewStringUTF(camera->getParameters().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 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 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;I)V", |
| (void*)android_hardware_Camera_native_setup }, |
| { "native_release", |
| "()V", |
| (void*)android_hardware_Camera_release }, |
| { "setPreviewDisplay", |
| "(Landroid/view/Surface;)V", |
| (void *)android_hardware_Camera_setPreviewDisplay }, |
| { "setPreviewTexture", |
| "(Landroid/graphics/SurfaceTexture;)V", |
| (void *)android_hardware_Camera_setPreviewTexture }, |
| { "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 }, |
| { "_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 int find_fields(JNIEnv *env, field *fields, int count) |
| { |
| for (int i = 0; i < count; i++) { |
| field *f = &fields[i]; |
| jclass clazz = env->FindClass(f->class_name); |
| if (clazz == NULL) { |
| ALOGE("Can't find %s", f->class_name); |
| return -1; |
| } |
| |
| jfieldID field = env->GetFieldID(clazz, f->field_name, f->field_type); |
| if (field == NULL) { |
| ALOGE("Can't find %s.%s", f->class_name, f->field_name); |
| return -1; |
| } |
| |
| *(f->jfield) = field; |
| } |
| |
| return 0; |
| } |
| |
| // 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", "I", &fields.context }, |
| { "android/view/Surface", ANDROID_VIEW_SURFACE_JNI_ID, "I", &fields.surface }, |
| { "android/graphics/SurfaceTexture", |
| ANDROID_GRAPHICS_SURFACETEXTURE_JNI_ID, "I", &fields.surfaceTexture }, |
| { "android/hardware/Camera$CameraInfo", "facing", "I", &fields.facing }, |
| { "android/hardware/Camera$CameraInfo", "orientation", "I", &fields.orientation }, |
| { "android/hardware/Camera$Face", "rect", "Landroid/graphics/Rect;", &fields.face_rect }, |
| { "android/hardware/Camera$Face", "score", "I", &fields.face_score }, |
| { "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 }, |
| }; |
| |
| if (find_fields(env, fields_to_find, NELEM(fields_to_find)) < 0) |
| return -1; |
| |
| jclass clazz = env->FindClass("android/hardware/Camera"); |
| fields.post_event = env->GetStaticMethodID(clazz, "postEventFromNative", |
| "(Ljava/lang/Object;IIILjava/lang/Object;)V"); |
| if (fields.post_event == NULL) { |
| ALOGE("Can't find android/hardware/Camera.postEventFromNative"); |
| return -1; |
| } |
| |
| clazz = env->FindClass("android/graphics/Rect"); |
| fields.rect_constructor = env->GetMethodID(clazz, "<init>", "()V"); |
| if (fields.rect_constructor == NULL) { |
| ALOGE("Can't find android/graphics/Rect.Rect()"); |
| return -1; |
| } |
| |
| clazz = env->FindClass("android/hardware/Camera$Face"); |
| fields.face_constructor = env->GetMethodID(clazz, "<init>", "()V"); |
| if (fields.face_constructor == NULL) { |
| ALOGE("Can't find android/hardware/Camera$Face.Face()"); |
| return -1; |
| } |
| |
| // Register native functions |
| return AndroidRuntime::registerNativeMethods(env, "android/hardware/Camera", |
| camMethods, NELEM(camMethods)); |
| } |