/frameworks/av/services/camera/libcameraservice/CameraClient.cpp
C++ | 959 lines | 692 code | 156 blank | 111 comment | 215 complexity | 5ae71b4bde399d524707c83b7fbfd699 MD5 | raw file
- /*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #define LOG_TAG "CameraClient"
- //#define LOG_NDEBUG 0
- #include <cutils/properties.h>
- #include <gui/SurfaceTextureClient.h>
- #include <gui/Surface.h>
- #include "CameraClient.h"
- #include "CameraHardwareInterface.h"
- #include "CameraService.h"
- namespace android {
- #define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
- #define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
- static int getCallingPid() {
- return IPCThreadState::self()->getCallingPid();
- }
- static int getCallingUid() {
- return IPCThreadState::self()->getCallingUid();
- }
- CameraClient::CameraClient(const sp<CameraService>& cameraService,
- const sp<ICameraClient>& cameraClient,
- int cameraId, int cameraFacing, int clientPid, int servicePid):
- Client(cameraService, cameraClient,
- cameraId, cameraFacing, clientPid, servicePid)
- {
- int callingPid = getCallingPid();
- LOG1("CameraClient::CameraClient E (pid %d, id %d)", callingPid, cameraId);
- mHardware = NULL;
- mMsgEnabled = 0;
- mSurface = 0;
- mPreviewWindow = 0;
- mDestructionStarted = false;
- // Callback is disabled by default
- mPreviewCallbackFlag = CAMERA_FRAME_CALLBACK_FLAG_NOOP;
- mOrientation = getOrientation(0, mCameraFacing == CAMERA_FACING_FRONT);
- mPlayShutterSound = true;
- LOG1("CameraClient::CameraClient X (pid %d, id %d)", callingPid, cameraId);
- }
- status_t CameraClient::initialize(camera_module_t *module) {
- int callingPid = getCallingPid();
- LOG1("CameraClient::initialize E (pid %d, id %d)", callingPid, mCameraId);
- char camera_device_name[10];
- status_t res;
- snprintf(camera_device_name, sizeof(camera_device_name), "%d", mCameraId);
- mHardware = new CameraHardwareInterface(camera_device_name);
- res = mHardware->initialize(&module->common);
- if (res != OK) {
- ALOGE("%s: Camera %d: unable to initialize device: %s (%d)",
- __FUNCTION__, mCameraId, strerror(-res), res);
- mHardware.clear();
- return NO_INIT;
- }
- mHardware->setCallbacks(notifyCallback,
- dataCallback,
- dataCallbackTimestamp,
- (void *)mCameraId);
- // Enable zoom, error, focus, and metadata messages by default
- enableMsgType(CAMERA_MSG_ERROR | CAMERA_MSG_ZOOM | CAMERA_MSG_FOCUS |
- CAMERA_MSG_PREVIEW_METADATA | CAMERA_MSG_FOCUS_MOVE);
- LOG1("CameraClient::initialize X (pid %d, id %d)", callingPid, mCameraId);
- return OK;
- }
- // tear down the client
- CameraClient::~CameraClient() {
- // this lock should never be NULL
- Mutex* lock = mCameraService->getClientLockById(mCameraId);
- lock->lock();
- mDestructionStarted = true;
- // client will not be accessed from callback. should unlock to prevent dead-lock in disconnect
- lock->unlock();
- int callingPid = getCallingPid();
- LOG1("CameraClient::~CameraClient E (pid %d, this %p)", callingPid, this);
- disconnect();
- LOG1("CameraClient::~CameraClient X (pid %d, this %p)", callingPid, this);
- }
- status_t CameraClient::dump(int fd, const Vector<String16>& args) {
- const size_t SIZE = 256;
- char buffer[SIZE];
- size_t len = snprintf(buffer, SIZE, "Client[%d] (%p) PID: %d\n",
- mCameraId,
- getCameraClient()->asBinder().get(),
- mClientPid);
- len = (len > SIZE - 1) ? SIZE - 1 : len;
- write(fd, buffer, len);
- return mHardware->dump(fd, args);
- }
- // ----------------------------------------------------------------------------
- status_t CameraClient::checkPid() const {
- int callingPid = getCallingPid();
- if (callingPid == mClientPid) return NO_ERROR;
- ALOGW("attempt to use a locked camera from a different process"
- " (old pid %d, new pid %d)", mClientPid, callingPid);
- return EBUSY;
- }
- status_t CameraClient::checkPidAndHardware() const {
- status_t result = checkPid();
- if (result != NO_ERROR) return result;
- if (mHardware == 0) {
- ALOGE("attempt to use a camera after disconnect() (pid %d)", getCallingPid());
- return INVALID_OPERATION;
- }
- return NO_ERROR;
- }
- status_t CameraClient::lock() {
- int callingPid = getCallingPid();
- LOG1("lock (pid %d)", callingPid);
- Mutex::Autolock lock(mLock);
- // lock camera to this client if the the camera is unlocked
- if (mClientPid == 0) {
- mClientPid = callingPid;
- return NO_ERROR;
- }
- // returns NO_ERROR if the client already owns the camera, EBUSY otherwise
- return checkPid();
- }
- status_t CameraClient::unlock() {
- int callingPid = getCallingPid();
- LOG1("unlock (pid %d)", callingPid);
- Mutex::Autolock lock(mLock);
- // allow anyone to use camera (after they lock the camera)
- status_t result = checkPid();
- if (result == NO_ERROR) {
- if (mHardware->recordingEnabled()) {
- ALOGE("Not allowed to unlock camera during recording.");
- return INVALID_OPERATION;
- }
- mClientPid = 0;
- LOG1("clear mCameraClient (pid %d)", callingPid);
- // we need to remove the reference to ICameraClient so that when the app
- // goes away, the reference count goes to 0.
- mCameraClient.clear();
- }
- return result;
- }
- // connect a new client to the camera
- status_t CameraClient::connect(const sp<ICameraClient>& client) {
- int callingPid = getCallingPid();
- LOG1("connect E (pid %d)", callingPid);
- Mutex::Autolock lock(mLock);
- if (mClientPid != 0 && checkPid() != NO_ERROR) {
- ALOGW("Tried to connect to a locked camera (old pid %d, new pid %d)",
- mClientPid, callingPid);
- return EBUSY;
- }
- if (mCameraClient != 0 && (client->asBinder() == mCameraClient->asBinder())) {
- LOG1("Connect to the same client");
- return NO_ERROR;
- }
- mPreviewCallbackFlag = CAMERA_FRAME_CALLBACK_FLAG_NOOP;
- mClientPid = callingPid;
- mCameraClient = client;
- LOG1("connect X (pid %d)", callingPid);
- return NO_ERROR;
- }
- static void disconnectWindow(const sp<ANativeWindow>& window) {
- if (window != 0) {
- status_t result = native_window_api_disconnect(window.get(),
- NATIVE_WINDOW_API_CAMERA);
- if (result != NO_ERROR) {
- ALOGW("native_window_api_disconnect failed: %s (%d)", strerror(-result),
- result);
- }
- }
- }
- void CameraClient::disconnect() {
- int callingPid = getCallingPid();
- LOG1("disconnect E (pid %d)", callingPid);
- Mutex::Autolock lock(mLock);
- // Allow both client and the media server to disconnect at all times
- if (callingPid != mClientPid && callingPid != mServicePid) {
- ALOGW("different client - don't disconnect");
- return;
- }
- if (mClientPid <= 0) {
- LOG1("camera is unlocked (mClientPid = %d), don't tear down hardware", mClientPid);
- return;
- }
- // Make sure disconnect() is done once and once only, whether it is called
- // from the user directly, or called by the destructor.
- if (mHardware == 0) return;
- LOG1("hardware teardown");
- // Before destroying mHardware, we must make sure it's in the
- // idle state.
- // Turn off all messages.
- disableMsgType(CAMERA_MSG_ALL_MSGS);
- mHardware->stopPreview();
- mHardware->cancelPicture();
- // Release the hardware resources.
- mHardware->release();
- // Release the held ANativeWindow resources.
- if (mPreviewWindow != 0) {
- disconnectWindow(mPreviewWindow);
- mPreviewWindow = 0;
- mHardware->setPreviewWindow(mPreviewWindow);
- }
- mHardware.clear();
- CameraService::Client::disconnect();
- LOG1("disconnect X (pid %d)", callingPid);
- }
- // ----------------------------------------------------------------------------
- status_t CameraClient::setPreviewWindow(const sp<IBinder>& binder,
- const sp<ANativeWindow>& window) {
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- // return if no change in surface.
- if (binder == mSurface) {
- return NO_ERROR;
- }
- if (window != 0) {
- result = native_window_api_connect(window.get(), NATIVE_WINDOW_API_CAMERA);
- if (result != NO_ERROR) {
- ALOGE("native_window_api_connect failed: %s (%d)", strerror(-result),
- result);
- return result;
- }
- }
- // If preview has been already started, register preview buffers now.
- if (mHardware->previewEnabled()) {
- if (window != 0) {
- native_window_set_scaling_mode(window.get(),
- NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
- native_window_set_buffers_transform(window.get(), mOrientation);
- result = mHardware->setPreviewWindow(window);
- }
- }
- if (result == NO_ERROR) {
- // Everything has succeeded. Disconnect the old window and remember the
- // new window.
- disconnectWindow(mPreviewWindow);
- mSurface = binder;
- mPreviewWindow = window;
- } else {
- // Something went wrong after we connected to the new window, so
- // disconnect here.
- disconnectWindow(window);
- }
- return result;
- }
- // set the Surface that the preview will use
- status_t CameraClient::setPreviewDisplay(const sp<Surface>& surface) {
- LOG1("setPreviewDisplay(%p) (pid %d)", surface.get(), getCallingPid());
- sp<IBinder> binder(surface != 0 ? surface->asBinder() : 0);
- sp<ANativeWindow> window(surface);
- return setPreviewWindow(binder, window);
- }
- // set the SurfaceTexture that the preview will use
- status_t CameraClient::setPreviewTexture(
- const sp<ISurfaceTexture>& surfaceTexture) {
- LOG1("setPreviewTexture(%p) (pid %d)", surfaceTexture.get(),
- getCallingPid());
- sp<IBinder> binder;
- sp<ANativeWindow> window;
- if (surfaceTexture != 0) {
- binder = surfaceTexture->asBinder();
- window = new SurfaceTextureClient(surfaceTexture);
- }
- return setPreviewWindow(binder, window);
- }
- // set the preview callback flag to affect how the received frames from
- // preview are handled.
- void CameraClient::setPreviewCallbackFlag(int callback_flag) {
- LOG1("setPreviewCallbackFlag(%d) (pid %d)", callback_flag, getCallingPid());
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return;
- mPreviewCallbackFlag = callback_flag;
- if (mPreviewCallbackFlag & CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK) {
- enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
- } else {
- disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
- }
- }
- // start preview mode
- status_t CameraClient::startPreview() {
- LOG1("startPreview (pid %d)", getCallingPid());
- return startCameraMode(CAMERA_PREVIEW_MODE);
- }
- // start recording mode
- status_t CameraClient::startRecording() {
- LOG1("startRecording (pid %d)", getCallingPid());
- return startCameraMode(CAMERA_RECORDING_MODE);
- }
- // start preview or recording
- status_t CameraClient::startCameraMode(camera_mode mode) {
- LOG1("startCameraMode(%d)", mode);
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- switch(mode) {
- case CAMERA_PREVIEW_MODE:
- if (mSurface == 0 && mPreviewWindow == 0) {
- LOG1("mSurface is not set yet.");
- // still able to start preview in this case.
- }
- return startPreviewMode();
- case CAMERA_RECORDING_MODE:
- if (mSurface == 0 && mPreviewWindow == 0) {
- ALOGE("mSurface or mPreviewWindow must be set before startRecordingMode.");
- return INVALID_OPERATION;
- }
- return startRecordingMode();
- default:
- return UNKNOWN_ERROR;
- }
- }
- status_t CameraClient::startPreviewMode() {
- LOG1("startPreviewMode");
- status_t result = NO_ERROR;
- // if preview has been enabled, nothing needs to be done
- if (mHardware->previewEnabled()) {
- return NO_ERROR;
- }
- if (mPreviewWindow != 0) {
- native_window_set_scaling_mode(mPreviewWindow.get(),
- NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
- native_window_set_buffers_transform(mPreviewWindow.get(),
- mOrientation);
- }
- mHardware->setPreviewWindow(mPreviewWindow);
- result = mHardware->startPreview();
- return result;
- }
- status_t CameraClient::startRecordingMode() {
- LOG1("startRecordingMode");
- status_t result = NO_ERROR;
- // if recording has been enabled, nothing needs to be done
- if (mHardware->recordingEnabled()) {
- return NO_ERROR;
- }
- // if preview has not been started, start preview first
- if (!mHardware->previewEnabled()) {
- result = startPreviewMode();
- if (result != NO_ERROR) {
- return result;
- }
- }
- // start recording mode
- enableMsgType(CAMERA_MSG_VIDEO_FRAME);
- mCameraService->playSound(CameraService::SOUND_RECORDING);
- result = mHardware->startRecording();
- if (result != NO_ERROR) {
- ALOGE("mHardware->startRecording() failed with status %d", result);
- }
- return result;
- }
- // stop preview mode
- void CameraClient::stopPreview() {
- LOG1("stopPreview (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return;
- disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
- mHardware->stopPreview();
- mPreviewBuffer.clear();
- }
- // stop recording mode
- void CameraClient::stopRecording() {
- LOG1("stopRecording (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return;
- disableMsgType(CAMERA_MSG_VIDEO_FRAME);
- mHardware->stopRecording();
- mCameraService->playSound(CameraService::SOUND_RECORDING);
- mPreviewBuffer.clear();
- }
- // release a recording frame
- void CameraClient::releaseRecordingFrame(const sp<IMemory>& mem) {
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return;
- mHardware->releaseRecordingFrame(mem);
- }
- status_t CameraClient::storeMetaDataInBuffers(bool enabled)
- {
- LOG1("storeMetaDataInBuffers: %s", enabled? "true": "false");
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) {
- return UNKNOWN_ERROR;
- }
- return mHardware->storeMetaDataInBuffers(enabled);
- }
- bool CameraClient::previewEnabled() {
- LOG1("previewEnabled (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return false;
- return mHardware->previewEnabled();
- }
- bool CameraClient::recordingEnabled() {
- LOG1("recordingEnabled (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return false;
- return mHardware->recordingEnabled();
- }
- status_t CameraClient::autoFocus() {
- LOG1("autoFocus (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- return mHardware->autoFocus();
- }
- status_t CameraClient::cancelAutoFocus() {
- LOG1("cancelAutoFocus (pid %d)", getCallingPid());
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- return mHardware->cancelAutoFocus();
- }
- // take a picture - image is returned in callback
- status_t CameraClient::takePicture(int msgType) {
- LOG1("takePicture (pid %d): 0x%x", getCallingPid(), msgType);
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- if ((msgType & CAMERA_MSG_RAW_IMAGE) &&
- (msgType & CAMERA_MSG_RAW_IMAGE_NOTIFY)) {
- ALOGE("CAMERA_MSG_RAW_IMAGE and CAMERA_MSG_RAW_IMAGE_NOTIFY"
- " cannot be both enabled");
- return BAD_VALUE;
- }
- // We only accept picture related message types
- // and ignore other types of messages for takePicture().
- int picMsgType = msgType
- & (CAMERA_MSG_SHUTTER |
- CAMERA_MSG_POSTVIEW_FRAME |
- CAMERA_MSG_RAW_IMAGE |
- CAMERA_MSG_RAW_IMAGE_NOTIFY |
- CAMERA_MSG_COMPRESSED_IMAGE);
- enableMsgType(picMsgType);
- return mHardware->takePicture();
- }
- // set preview/capture parameters - key/value pairs
- status_t CameraClient::setParameters(const String8& params) {
- LOG1("setParameters (pid %d) (%s)", getCallingPid(), params.string());
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- CameraParameters p(params);
- return mHardware->setParameters(p);
- }
- // get preview/capture parameters - key/value pairs
- String8 CameraClient::getParameters() const {
- Mutex::Autolock lock(mLock);
- if (checkPidAndHardware() != NO_ERROR) return String8();
- String8 params(mHardware->getParameters().flatten());
- LOG1("getParameters (pid %d) (%s)", getCallingPid(), params.string());
- return params;
- }
- // enable shutter sound
- status_t CameraClient::enableShutterSound(bool enable) {
- LOG1("enableShutterSound (pid %d)", getCallingPid());
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- if (enable) {
- mPlayShutterSound = true;
- return OK;
- }
- // Disabling shutter sound may not be allowed. In that case only
- // allow the mediaserver process to disable the sound.
- char value[PROPERTY_VALUE_MAX];
- property_get("ro.camera.sound.forced", value, "0");
- if (strcmp(value, "0") != 0) {
- // Disabling shutter sound is not allowed. Deny if the current
- // process is not mediaserver.
- if (getCallingPid() != getpid()) {
- ALOGE("Failed to disable shutter sound. Permission denied (pid %d)", getCallingPid());
- return PERMISSION_DENIED;
- }
- }
- mPlayShutterSound = false;
- return OK;
- }
- status_t CameraClient::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
- LOG1("sendCommand (pid %d)", getCallingPid());
- int orientation;
- Mutex::Autolock lock(mLock);
- status_t result = checkPidAndHardware();
- if (result != NO_ERROR) return result;
- if (cmd == CAMERA_CMD_SET_DISPLAY_ORIENTATION) {
- // Mirror the preview if the camera is front-facing.
- orientation = getOrientation(arg1, mCameraFacing == CAMERA_FACING_FRONT);
- if (orientation == -1) return BAD_VALUE;
- if (mOrientation != orientation) {
- mOrientation = orientation;
- if (mPreviewWindow != 0) {
- native_window_set_buffers_transform(mPreviewWindow.get(),
- mOrientation);
- }
- }
- return OK;
- } else if (cmd == CAMERA_CMD_ENABLE_SHUTTER_SOUND) {
- switch (arg1) {
- case 0:
- return enableShutterSound(false);
- case 1:
- return enableShutterSound(true);
- default:
- return BAD_VALUE;
- }
- return OK;
- } else if (cmd == CAMERA_CMD_PLAY_RECORDING_SOUND) {
- mCameraService->playSound(CameraService::SOUND_RECORDING);
- } else if (cmd == CAMERA_CMD_SET_VIDEO_BUFFER_COUNT) {
- // Silently ignore this command
- return INVALID_OPERATION;
- } else if (cmd == CAMERA_CMD_PING) {
- // If mHardware is 0, checkPidAndHardware will return error.
- return OK;
- }
- return mHardware->sendCommand(cmd, arg1, arg2);
- }
- // ----------------------------------------------------------------------------
- void CameraClient::enableMsgType(int32_t msgType) {
- android_atomic_or(msgType, &mMsgEnabled);
- mHardware->enableMsgType(msgType);
- }
- void CameraClient::disableMsgType(int32_t msgType) {
- android_atomic_and(~msgType, &mMsgEnabled);
- mHardware->disableMsgType(msgType);
- }
- #define CHECK_MESSAGE_INTERVAL 10 // 10ms
- bool CameraClient::lockIfMessageWanted(int32_t msgType) {
- int sleepCount = 0;
- while (mMsgEnabled & msgType) {
- if (mLock.tryLock() == NO_ERROR) {
- if (sleepCount > 0) {
- LOG1("lockIfMessageWanted(%d): waited for %d ms",
- msgType, sleepCount * CHECK_MESSAGE_INTERVAL);
- }
- return true;
- }
- if (sleepCount++ == 0) {
- LOG1("lockIfMessageWanted(%d): enter sleep", msgType);
- }
- usleep(CHECK_MESSAGE_INTERVAL * 1000);
- }
- ALOGW("lockIfMessageWanted(%d): dropped unwanted message", msgType);
- return false;
- }
- // Callback messages can be dispatched to internal handlers or pass to our
- // client's callback functions, depending on the message type.
- //
- // notifyCallback:
- // CAMERA_MSG_SHUTTER handleShutter
- // (others) c->notifyCallback
- // dataCallback:
- // CAMERA_MSG_PREVIEW_FRAME handlePreviewData
- // CAMERA_MSG_POSTVIEW_FRAME handlePostview
- // CAMERA_MSG_RAW_IMAGE handleRawPicture
- // CAMERA_MSG_COMPRESSED_IMAGE handleCompressedPicture
- // (others) c->dataCallback
- // dataCallbackTimestamp
- // (others) c->dataCallbackTimestamp
- //
- // NOTE: the *Callback functions grab mLock of the client before passing
- // control to handle* functions. So the handle* functions must release the
- // lock before calling the ICameraClient's callbacks, so those callbacks can
- // invoke methods in the Client class again (For example, the preview frame
- // callback may want to releaseRecordingFrame). The handle* functions must
- // release the lock after all accesses to member variables, so it must be
- // handled very carefully.
- void CameraClient::notifyCallback(int32_t msgType, int32_t ext1,
- int32_t ext2, void* user) {
- LOG2("notifyCallback(%d)", msgType);
- Mutex* lock = getClientLockFromCookie(user);
- if (lock == NULL) return;
- Mutex::Autolock alock(*lock);
- CameraClient* client =
- static_cast<CameraClient*>(getClientFromCookie(user));
- if (client == NULL) return;
- if (!client->lockIfMessageWanted(msgType)) return;
- switch (msgType) {
- case CAMERA_MSG_SHUTTER:
- // ext1 is the dimension of the yuv picture.
- client->handleShutter();
- break;
- default:
- client->handleGenericNotify(msgType, ext1, ext2);
- break;
- }
- }
- void CameraClient::dataCallback(int32_t msgType,
- const sp<IMemory>& dataPtr, camera_frame_metadata_t *metadata, void* user) {
- LOG2("dataCallback(%d)", msgType);
- Mutex* lock = getClientLockFromCookie(user);
- if (lock == NULL) return;
- Mutex::Autolock alock(*lock);
- CameraClient* client =
- static_cast<CameraClient*>(getClientFromCookie(user));
- if (client == NULL) return;
- if (!client->lockIfMessageWanted(msgType)) return;
- if (dataPtr == 0 && metadata == NULL) {
- ALOGE("Null data returned in data callback");
- client->handleGenericNotify(CAMERA_MSG_ERROR, UNKNOWN_ERROR, 0);
- return;
- }
- switch (msgType & ~CAMERA_MSG_PREVIEW_METADATA) {
- case CAMERA_MSG_PREVIEW_FRAME:
- client->handlePreviewData(msgType, dataPtr, metadata);
- break;
- case CAMERA_MSG_POSTVIEW_FRAME:
- client->handlePostview(dataPtr);
- break;
- case CAMERA_MSG_RAW_IMAGE:
- client->handleRawPicture(dataPtr);
- break;
- case CAMERA_MSG_COMPRESSED_IMAGE:
- client->handleCompressedPicture(dataPtr);
- break;
- default:
- client->handleGenericData(msgType, dataPtr, metadata);
- break;
- }
- }
- void CameraClient::dataCallbackTimestamp(nsecs_t timestamp,
- int32_t msgType, const sp<IMemory>& dataPtr, void* user) {
- LOG2("dataCallbackTimestamp(%d)", msgType);
- Mutex* lock = getClientLockFromCookie(user);
- if (lock == NULL) return;
- Mutex::Autolock alock(*lock);
- CameraClient* client =
- static_cast<CameraClient*>(getClientFromCookie(user));
- if (client == NULL) return;
- if (!client->lockIfMessageWanted(msgType)) return;
- if (dataPtr == 0) {
- ALOGE("Null data returned in data with timestamp callback");
- client->handleGenericNotify(CAMERA_MSG_ERROR, UNKNOWN_ERROR, 0);
- return;
- }
- client->handleGenericDataTimestamp(timestamp, msgType, dataPtr);
- }
- // snapshot taken callback
- void CameraClient::handleShutter(void) {
- if (mPlayShutterSound) {
- mCameraService->playSound(CameraService::SOUND_SHUTTER);
- }
- sp<ICameraClient> c = mCameraClient;
- if (c != 0) {
- mLock.unlock();
- c->notifyCallback(CAMERA_MSG_SHUTTER, 0, 0);
- if (!lockIfMessageWanted(CAMERA_MSG_SHUTTER)) return;
- }
- disableMsgType(CAMERA_MSG_SHUTTER);
- mLock.unlock();
- }
- // preview callback - frame buffer update
- void CameraClient::handlePreviewData(int32_t msgType,
- const sp<IMemory>& mem,
- camera_frame_metadata_t *metadata) {
- ssize_t offset;
- size_t size;
- sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
- // local copy of the callback flags
- int flags = mPreviewCallbackFlag;
- // is callback enabled?
- if (!(flags & CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK)) {
- // If the enable bit is off, the copy-out and one-shot bits are ignored
- LOG2("frame callback is disabled");
- mLock.unlock();
- return;
- }
- // hold a strong pointer to the client
- sp<ICameraClient> c = mCameraClient;
- // clear callback flags if no client or one-shot mode
- if (c == 0 || (mPreviewCallbackFlag & CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK)) {
- LOG2("Disable preview callback");
- mPreviewCallbackFlag &= ~(CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK |
- CAMERA_FRAME_CALLBACK_FLAG_COPY_OUT_MASK |
- CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK);
- disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
- }
- if (c != 0) {
- // Is the received frame copied out or not?
- if (flags & CAMERA_FRAME_CALLBACK_FLAG_COPY_OUT_MASK) {
- LOG2("frame is copied");
- copyFrameAndPostCopiedFrame(msgType, c, heap, offset, size, metadata);
- } else {
- LOG2("frame is forwarded");
- mLock.unlock();
- c->dataCallback(msgType, mem, metadata);
- }
- } else {
- mLock.unlock();
- }
- }
- // picture callback - postview image ready
- void CameraClient::handlePostview(const sp<IMemory>& mem) {
- disableMsgType(CAMERA_MSG_POSTVIEW_FRAME);
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->dataCallback(CAMERA_MSG_POSTVIEW_FRAME, mem, NULL);
- }
- }
- // picture callback - raw image ready
- void CameraClient::handleRawPicture(const sp<IMemory>& mem) {
- disableMsgType(CAMERA_MSG_RAW_IMAGE);
- ssize_t offset;
- size_t size;
- sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->dataCallback(CAMERA_MSG_RAW_IMAGE, mem, NULL);
- }
- }
- // picture callback - compressed picture ready
- void CameraClient::handleCompressedPicture(const sp<IMemory>& mem) {
- disableMsgType(CAMERA_MSG_COMPRESSED_IMAGE);
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->dataCallback(CAMERA_MSG_COMPRESSED_IMAGE, mem, NULL);
- }
- }
- void CameraClient::handleGenericNotify(int32_t msgType,
- int32_t ext1, int32_t ext2) {
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->notifyCallback(msgType, ext1, ext2);
- }
- }
- void CameraClient::handleGenericData(int32_t msgType,
- const sp<IMemory>& dataPtr, camera_frame_metadata_t *metadata) {
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->dataCallback(msgType, dataPtr, metadata);
- }
- }
- void CameraClient::handleGenericDataTimestamp(nsecs_t timestamp,
- int32_t msgType, const sp<IMemory>& dataPtr) {
- sp<ICameraClient> c = mCameraClient;
- mLock.unlock();
- if (c != 0) {
- c->dataCallbackTimestamp(timestamp, msgType, dataPtr);
- }
- }
- void CameraClient::copyFrameAndPostCopiedFrame(
- int32_t msgType, const sp<ICameraClient>& client,
- const sp<IMemoryHeap>& heap, size_t offset, size_t size,
- camera_frame_metadata_t *metadata) {
- LOG2("copyFrameAndPostCopiedFrame");
- // It is necessary to copy out of pmem before sending this to
- // the callback. For efficiency, reuse the same MemoryHeapBase
- // provided it's big enough. Don't allocate the memory or
- // perform the copy if there's no callback.
- // hold the preview lock while we grab a reference to the preview buffer
- sp<MemoryHeapBase> previewBuffer;
- if (mPreviewBuffer == 0) {
- mPreviewBuffer = new MemoryHeapBase(size, 0, NULL);
- } else if (size > mPreviewBuffer->virtualSize()) {
- mPreviewBuffer.clear();
- mPreviewBuffer = new MemoryHeapBase(size, 0, NULL);
- }
- if (mPreviewBuffer == 0) {
- ALOGE("failed to allocate space for preview buffer");
- mLock.unlock();
- return;
- }
- previewBuffer = mPreviewBuffer;
- memcpy(previewBuffer->base(), (uint8_t *)heap->base() + offset, size);
- sp<MemoryBase> frame = new MemoryBase(previewBuffer, 0, size);
- if (frame == 0) {
- ALOGE("failed to allocate space for frame callback");
- mLock.unlock();
- return;
- }
- mLock.unlock();
- client->dataCallback(msgType, frame, metadata);
- }
- int CameraClient::getOrientation(int degrees, bool mirror) {
- if (!mirror) {
- if (degrees == 0) return 0;
- else if (degrees == 90) return HAL_TRANSFORM_ROT_90;
- else if (degrees == 180) return HAL_TRANSFORM_ROT_180;
- else if (degrees == 270) return HAL_TRANSFORM_ROT_270;
- } else { // Do mirror (horizontal flip)
- if (degrees == 0) { // FLIP_H and ROT_0
- return HAL_TRANSFORM_FLIP_H;
- } else if (degrees == 90) { // FLIP_H and ROT_90
- return HAL_TRANSFORM_FLIP_H | HAL_TRANSFORM_ROT_90;
- } else if (degrees == 180) { // FLIP_H and ROT_180
- return HAL_TRANSFORM_FLIP_V;
- } else if (degrees == 270) { // FLIP_H and ROT_270
- return HAL_TRANSFORM_FLIP_V | HAL_TRANSFORM_ROT_90;
- }
- }
- ALOGE("Invalid setDisplayOrientation degrees=%d", degrees);
- return -1;
- }
- }; // namespace android