move native services under services/

moved surfaceflinger, audioflinger, cameraservice

all native services should now reside in this location.

Change-Id: Iee42b83dd2a94c3bf5107ab0895fe2dfcd5337a8

1 files changed, 0 insertions, 1273 deletions

diff --git a/camera/libcameraservice/CameraService.cpp b/camera/libcameraservice/CameraService.cpp
deleted file mode 100644
index 10668a496..000000000
--- a/camera/libcameraservice/CameraService.cpp
+++ /dev/null
@@ -1,1273 +0,0 @@
-/*
-**
-** Copyright (C) 2008, The Android Open Source Project
-** Copyright (C) 2008 HTC Inc.
-**
-** 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 "CameraService"
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <pthread.h>
-
-#include <binder/IPCThreadState.h>
-#include <binder/IServiceManager.h>
-#include <binder/MemoryBase.h>
-#include <binder/MemoryHeapBase.h>
-#include <cutils/atomic.h>
-#include <hardware/hardware.h>
-#include <media/AudioSystem.h>
-#include <media/mediaplayer.h>
-#include <surfaceflinger/ISurface.h>
-#include <ui/Overlay.h>
-#include <utils/Errors.h>
-#include <utils/Log.h>
-#include <utils/String16.h>
-
-#include "CameraService.h"
-
-namespace android {
-
-// ----------------------------------------------------------------------------
-// Logging support -- this is for debugging only
-// Use "adb shell dumpsys media.camera -v 1" to change it.
-static volatile int32_t gLogLevel = 0;
-
-#define LOG1(...) LOGD_IF(gLogLevel >= 1, __VA_ARGS__);
-#define LOG2(...) LOGD_IF(gLogLevel >= 2, __VA_ARGS__);
-
-static void setLogLevel(int level) {
-    android_atomic_write(level, &gLogLevel);
-}
-
-// ----------------------------------------------------------------------------
-
-static int getCallingPid() {
-    return IPCThreadState::self()->getCallingPid();
-}
-
-static int getCallingUid() {
-    return IPCThreadState::self()->getCallingUid();
-}
-
-// ----------------------------------------------------------------------------
-
-// This is ugly and only safe if we never re-create the CameraService, but
-// should be ok for now.
-static CameraService *gCameraService;
-
-CameraService::CameraService()
-:mSoundRef(0)
-{
-    LOGI("CameraService started (pid=%d)", getpid());
-
-    mNumberOfCameras = HAL_getNumberOfCameras();
-    if (mNumberOfCameras > MAX_CAMERAS) {
-        LOGE("Number of cameras(%d) > MAX_CAMERAS(%d).",
-             mNumberOfCameras, MAX_CAMERAS);
-        mNumberOfCameras = MAX_CAMERAS;
-    }
-
-    for (int i = 0; i < mNumberOfCameras; i++) {
-        setCameraFree(i);
-    }
-
-    gCameraService = this;
-}
-
-CameraService::~CameraService() {
-    for (int i = 0; i < mNumberOfCameras; i++) {
-        if (mBusy[i]) {
-            LOGE("camera %d is still in use in destructor!", i);
-        }
-    }
-
-    gCameraService = NULL;
-}
-
-int32_t CameraService::getNumberOfCameras() {
-    return mNumberOfCameras;
-}
-
-status_t CameraService::getCameraInfo(int cameraId,
-                                      struct CameraInfo* cameraInfo) {
-    if (cameraId < 0 || cameraId >= mNumberOfCameras) {
-        return BAD_VALUE;
-    }
-
-    HAL_getCameraInfo(cameraId, cameraInfo);
-    return OK;
-}
-
-sp<ICamera> CameraService::connect(
-        const sp<ICameraClient>& cameraClient, int cameraId) {
-    int callingPid = getCallingPid();
-    LOG1("CameraService::connect E (pid %d, id %d)", callingPid, cameraId);
-
-    sp<Client> client;
-    if (cameraId < 0 || cameraId >= mNumberOfCameras) {
-        LOGE("CameraService::connect X (pid %d) rejected (invalid cameraId %d).",
-            callingPid, cameraId);
-        return NULL;
-    }
-
-    Mutex::Autolock lock(mServiceLock);
-    if (mClient[cameraId] != 0) {
-        client = mClient[cameraId].promote();
-        if (client != 0) {
-            if (cameraClient->asBinder() == client->getCameraClient()->asBinder()) {
-                LOG1("CameraService::connect X (pid %d) (the same client)",
-                    callingPid);
-                return client;
-            } else {
-                LOGW("CameraService::connect X (pid %d) rejected (existing client).",
-                    callingPid);
-                return NULL;
-            }
-        }
-        mClient[cameraId].clear();
-    }
-
-    if (mBusy[cameraId]) {
-        LOGW("CameraService::connect X (pid %d) rejected"
-             " (camera %d is still busy).", callingPid, cameraId);
-        return NULL;
-    }
-
-    client = new Client(this, cameraClient, cameraId, callingPid);
-    mClient[cameraId] = client;
-    LOG1("CameraService::connect X");
-    return client;
-}
-
-void CameraService::removeClient(const sp<ICameraClient>& cameraClient) {
-    int callingPid = getCallingPid();
-    LOG1("CameraService::removeClient E (pid %d)", callingPid);
-
-    for (int i = 0; i < mNumberOfCameras; i++) {
-        // Declare this before the lock to make absolutely sure the
-        // destructor won't be called with the lock held.
-        sp<Client> client;
-
-        Mutex::Autolock lock(mServiceLock);
-
-        // This happens when we have already disconnected (or this is
-        // just another unused camera).
-        if (mClient[i] == 0) continue;
-
-        // Promote mClient. It can fail if we are called from this path:
-        // Client::~Client() -> disconnect() -> removeClient().
-        client = mClient[i].promote();
-
-        if (client == 0) {
-            mClient[i].clear();
-            continue;
-        }
-
-        if (cameraClient->asBinder() == client->getCameraClient()->asBinder()) {
-            // Found our camera, clear and leave.
-            LOG1("removeClient: clear camera %d", i);
-            mClient[i].clear();
-            break;
-        }
-    }
-
-    LOG1("CameraService::removeClient X (pid %d)", callingPid);
-}
-
-sp<CameraService::Client> CameraService::getClientById(int cameraId) {
-    if (cameraId < 0 || cameraId >= mNumberOfCameras) return NULL;
-    return mClient[cameraId].promote();
-}
-
-void CameraService::instantiate() {
-    defaultServiceManager()->addService(String16("media.camera"),
-        new CameraService());
-}
-
-status_t CameraService::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
-    // Permission checks
-    switch (code) {
-        case BnCameraService::CONNECT:
-            const int pid = getCallingPid();
-            const int self_pid = getpid();
-            if (pid != self_pid) {
-                // we're called from a different process, do the real check
-                if (!checkCallingPermission(
-                        String16("android.permission.CAMERA"))) {
-                    const int uid = getCallingUid();
-                    LOGE("Permission Denial: "
-                         "can't use the camera pid=%d, uid=%d", pid, uid);
-                    return PERMISSION_DENIED;
-                }
-            }
-            break;
-    }
-
-    return BnCameraService::onTransact(code, data, reply, flags);
-}
-
-// The reason we need this busy bit is a new CameraService::connect() request
-// may come in while the previous Client's destructor has not been run or is
-// still running. If the last strong reference of the previous Client is gone
-// but the destructor has not been finished, we should not allow the new Client
-// to be created because we need to wait for the previous Client to tear down
-// the hardware first.
-void CameraService::setCameraBusy(int cameraId) {
-    android_atomic_write(1, &mBusy[cameraId]);
-}
-
-void CameraService::setCameraFree(int cameraId) {
-    android_atomic_write(0, &mBusy[cameraId]);
-}
-
-// We share the media players for shutter and recording sound for all clients.
-// A reference count is kept to determine when we will actually release the
-// media players.
-
-static MediaPlayer* newMediaPlayer(const char *file) {
-    MediaPlayer* mp = new MediaPlayer();
-    if (mp->setDataSource(file, NULL) == NO_ERROR) {
-        mp->setAudioStreamType(AudioSystem::ENFORCED_AUDIBLE);
-        mp->prepare();
-    } else {
-        LOGE("Failed to load CameraService sounds: %s", file);
-        return NULL;
-    }
-    return mp;
-}
-
-void CameraService::loadSound() {
-    Mutex::Autolock lock(mSoundLock);
-    LOG1("CameraService::loadSound ref=%d", mSoundRef);
-    if (mSoundRef++) return;
-
-    mSoundPlayer[SOUND_SHUTTER] = newMediaPlayer("/system/media/audio/ui/camera_click.ogg");
-    mSoundPlayer[SOUND_RECORDING] = newMediaPlayer("/system/media/audio/ui/VideoRecord.ogg");
-}
-
-void CameraService::releaseSound() {
-    Mutex::Autolock lock(mSoundLock);
-    LOG1("CameraService::releaseSound ref=%d", mSoundRef);
-    if (--mSoundRef) return;
-
-    for (int i = 0; i < NUM_SOUNDS; i++) {
-        if (mSoundPlayer[i] != 0) {
-            mSoundPlayer[i]->disconnect();
-            mSoundPlayer[i].clear();
-        }
-    }
-}
-
-void CameraService::playSound(sound_kind kind) {
-    LOG1("playSound(%d)", kind);
-    Mutex::Autolock lock(mSoundLock);
-    sp<MediaPlayer> player = mSoundPlayer[kind];
-    if (player != 0) {
-        // do not play the sound if stream volume is 0
-        // (typically because ringer mode is silent).
-        int index;
-        AudioSystem::getStreamVolumeIndex(AudioSystem::ENFORCED_AUDIBLE, &index);
-        if (index != 0) {
-            player->seekTo(0);
-            player->start();
-        }
-    }
-}
-
-// ----------------------------------------------------------------------------
-
-CameraService::Client::Client(const sp<CameraService>& cameraService,
-        const sp<ICameraClient>& cameraClient, int cameraId, int clientPid) {
-    int callingPid = getCallingPid();
-    LOG1("Client::Client E (pid %d)", callingPid);
-
-    mCameraService = cameraService;
-    mCameraClient = cameraClient;
-    mCameraId = cameraId;
-    mClientPid = clientPid;
-
-    mHardware = HAL_openCameraHardware(cameraId);
-    mUseOverlay = mHardware->useOverlay();
-    mMsgEnabled = 0;
-
-    mHardware->setCallbacks(notifyCallback,
-                            dataCallback,
-                            dataCallbackTimestamp,
-                            (void *)cameraId);
-
-    // Enable zoom, error, and focus messages by default
-    enableMsgType(CAMERA_MSG_ERROR |
-                  CAMERA_MSG_ZOOM |
-                  CAMERA_MSG_FOCUS);
-    mOverlayW = 0;
-    mOverlayH = 0;
-
-    // Callback is disabled by default
-    mPreviewCallbackFlag = FRAME_CALLBACK_FLAG_NOOP;
-    mOrientation = 0;
-    cameraService->setCameraBusy(cameraId);
-    cameraService->loadSound();
-    LOG1("Client::Client X (pid %d)", callingPid);
-}
-
-static void *unregister_surface(void *arg) {
-    ISurface *surface = (ISurface *)arg;
-    surface->unregisterBuffers();
-    IPCThreadState::self()->flushCommands();
-    return NULL;
-}
-
-// tear down the client
-CameraService::Client::~Client() {
-    int callingPid = getCallingPid();
-    LOG1("Client::~Client E (pid %d, this %p)", callingPid, this);
-
-    if (mSurface != 0 && !mUseOverlay) {
-        pthread_t thr;
-        // We unregister the buffers in a different thread because binder does
-        // not let us make sychronous transactions in a binder destructor (that
-        // is, upon our reaching a refcount of zero.)
-        pthread_create(&thr,
-                       NULL,  // attr
-                       unregister_surface,
-                       mSurface.get());
-        pthread_join(thr, NULL);
-    }
-
-    // set mClientPid to let disconnet() tear down the hardware
-    mClientPid = callingPid;
-    disconnect();
-    mCameraService->releaseSound();
-    LOG1("Client::~Client X (pid %d, this %p)", callingPid, this);
-}
-
-// ----------------------------------------------------------------------------
-
-status_t CameraService::Client::checkPid() const {
-    int callingPid = getCallingPid();
-    if (callingPid == mClientPid) return NO_ERROR;
-
-    LOGW("attempt to use a locked camera from a different process"
-         " (old pid %d, new pid %d)", mClientPid, callingPid);
-    return EBUSY;
-}
-
-status_t CameraService::Client::checkPidAndHardware() const {
-    status_t result = checkPid();
-    if (result != NO_ERROR) return result;
-    if (mHardware == 0) {
-        LOGE("attempt to use a camera after disconnect() (pid %d)", getCallingPid());
-        return INVALID_OPERATION;
-    }
-    return NO_ERROR;
-}
-
-status_t CameraService::Client::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 CameraService::Client::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) {
-        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 CameraService::Client::connect(const sp<ICameraClient>& client) {
-    int callingPid = getCallingPid();
-    LOG1("connect E (pid %d)", callingPid);
-    Mutex::Autolock lock(mLock);
-
-    if (mClientPid != 0 && checkPid() != NO_ERROR) {
-        LOGW("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 = FRAME_CALLBACK_FLAG_NOOP;
-    mClientPid = callingPid;
-    mCameraClient = client;
-
-    LOG1("connect X (pid %d)", callingPid);
-    return NO_ERROR;
-}
-
-void CameraService::Client::disconnect() {
-    int callingPid = getCallingPid();
-    LOG1("disconnect E (pid %d)", callingPid);
-    Mutex::Autolock lock(mLock);
-
-    if (checkPid() != NO_ERROR) {
-        LOGW("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 overlay resources.
-    if (mUseOverlay) {
-        mOverlayRef = 0;
-    }
-    mHardware.clear();
-
-    mCameraService->removeClient(mCameraClient);
-    mCameraService->setCameraFree(mCameraId);
-
-    LOG1("disconnect X (pid %d)", callingPid);
-}
-
-// ----------------------------------------------------------------------------
-
-// set the ISurface that the preview will use
-status_t CameraService::Client::setPreviewDisplay(const sp<ISurface>& surface) {
-    LOG1("setPreviewDisplay(%p) (pid %d)", surface.get(), getCallingPid());
-    Mutex::Autolock lock(mLock);
-    status_t result = checkPidAndHardware();
-    if (result != NO_ERROR) return result;
-
-    result = NO_ERROR;
-
-    // return if no change in surface.
-    // asBinder() is safe on NULL (returns NULL)
-    if (surface->asBinder() == mSurface->asBinder()) {
-        return result;
-    }
-
-    if (mSurface != 0) {
-        LOG1("clearing old preview surface %p", mSurface.get());
-        if (mUseOverlay) {
-            // Force the destruction of any previous overlay
-            sp<Overlay> dummy;
-            mHardware->setOverlay(dummy);
-        } else {
-            mSurface->unregisterBuffers();
-        }
-    }
-    mSurface = surface;
-    mOverlayRef = 0;
-    // If preview has been already started, set overlay or register preview
-    // buffers now.
-    if (mHardware->previewEnabled()) {
-        if (mUseOverlay) {
-            result = setOverlay();
-        } else if (mSurface != 0) {
-            result = registerPreviewBuffers();
-        }
-    }
-
-    return result;
-}
-
-status_t CameraService::Client::registerPreviewBuffers() {
-    int w, h;
-    CameraParameters params(mHardware->getParameters());
-    params.getPreviewSize(&w, &h);
-
-    // FIXME: don't use a hardcoded format here.
-    ISurface::BufferHeap buffers(w, h, w, h,
-                                 HAL_PIXEL_FORMAT_YCrCb_420_SP,
-                                 mOrientation,
-                                 0,
-                                 mHardware->getPreviewHeap());
-
-    status_t result = mSurface->registerBuffers(buffers);
-    if (result != NO_ERROR) {
-        LOGE("registerBuffers failed with status %d", result);
-    }
-    return result;
-}
-
-status_t CameraService::Client::setOverlay() {
-    int w, h;
-    CameraParameters params(mHardware->getParameters());
-    params.getPreviewSize(&w, &h);
-
-    if (w != mOverlayW || h != mOverlayH) {
-        // Force the destruction of any previous overlay
-        sp<Overlay> dummy;
-        mHardware->setOverlay(dummy);
-        mOverlayRef = 0;
-    }
-
-    status_t result = NO_ERROR;
-    if (mSurface == 0) {
-        result = mHardware->setOverlay(NULL);
-    } else {
-        if (mOverlayRef == 0) {
-            // FIXME:
-            // Surfaceflinger may hold onto the previous overlay reference for some
-            // time after we try to destroy it. retry a few times. In the future, we
-            // should make the destroy call block, or possibly specify that we can
-            // wait in the createOverlay call if the previous overlay is in the
-            // process of being destroyed.
-            for (int retry = 0; retry < 50; ++retry) {
-                mOverlayRef = mSurface->createOverlay(w, h, OVERLAY_FORMAT_DEFAULT,
-                                                      mOrientation);
-                if (mOverlayRef != 0) break;
-                LOGW("Overlay create failed - retrying");
-                usleep(20000);
-            }
-            if (mOverlayRef == 0) {
-                LOGE("Overlay Creation Failed!");
-                return -EINVAL;
-            }
-            result = mHardware->setOverlay(new Overlay(mOverlayRef));
-        }
-    }
-    if (result != NO_ERROR) {
-        LOGE("mHardware->setOverlay() failed with status %d\n", result);
-        return result;
-    }
-
-    mOverlayW = w;
-    mOverlayH = h;
-
-    return result;
-}
-
-// set the preview callback flag to affect how the received frames from
-// preview are handled.
-void CameraService::Client::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 we don't use overlay, we always need the preview frame for display.
-    // If we do use overlay, we only need the preview frame if the user
-    // wants the data.
-    if (mUseOverlay) {
-        if(mPreviewCallbackFlag & FRAME_CALLBACK_FLAG_ENABLE_MASK) {
-            enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
-        } else {
-            disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
-        }
-    }
-}
-
-// start preview mode
-status_t CameraService::Client::startPreview() {
-    LOG1("startPreview (pid %d)", getCallingPid());
-    return startCameraMode(CAMERA_PREVIEW_MODE);
-}
-
-// start recording mode
-status_t CameraService::Client::startRecording() {
-    LOG1("startRecording (pid %d)", getCallingPid());
-    return startCameraMode(CAMERA_RECORDING_MODE);
-}
-
-// start preview or recording
-status_t CameraService::Client::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) {
-                LOG1("mSurface is not set yet.");
-                // still able to start preview in this case.
-            }
-            return startPreviewMode();
-        case CAMERA_RECORDING_MODE:
-            if (mSurface == 0) {
-                LOGE("mSurface must be set before startRecordingMode.");
-                return INVALID_OPERATION;
-            }
-            return startRecordingMode();
-        default:
-            return UNKNOWN_ERROR;
-    }
-}
-
-status_t CameraService::Client::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 (mUseOverlay) {
-        // If preview display has been set, set overlay now.
-        if (mSurface != 0) {
-            result = setOverlay();
-        }
-        if (result != NO_ERROR) return result;
-        result = mHardware->startPreview();
-    } else {
-        enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
-        result = mHardware->startPreview();
-        if (result != NO_ERROR) return result;
-        // If preview display has been set, register preview buffers now.
-        if (mSurface != 0) {
-           // Unregister here because the surface may be previously registered
-           // with the raw (snapshot) heap.
-           mSurface->unregisterBuffers();
-           result = registerPreviewBuffers();
-        }
-    }
-    return result;
-}
-
-status_t CameraService::Client::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(SOUND_RECORDING);
-    result = mHardware->startRecording();
-    if (result != NO_ERROR) {
-        LOGE("mHardware->startRecording() failed with status %d", result);
-    }
-    return result;
-}
-
-// stop preview mode
-void CameraService::Client::stopPreview() {
-    LOG1("stopPreview (pid %d)", getCallingPid());
-    Mutex::Autolock lock(mLock);
-    if (checkPidAndHardware() != NO_ERROR) return;
-
-    disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
-    mHardware->stopPreview();
-
-    if (mSurface != 0 && !mUseOverlay) {
-        mSurface->unregisterBuffers();
-    }
-
-    mPreviewBuffer.clear();
-}
-
-// stop recording mode
-void CameraService::Client::stopRecording() {
-    LOG1("stopRecording (pid %d)", getCallingPid());
-    Mutex::Autolock lock(mLock);
-    if (checkPidAndHardware() != NO_ERROR) return;
-
-    mCameraService->playSound(SOUND_RECORDING);
-    disableMsgType(CAMERA_MSG_VIDEO_FRAME);
-    mHardware->stopRecording();
-
-    mPreviewBuffer.clear();
-}
-
-// release a recording frame
-void CameraService::Client::releaseRecordingFrame(const sp<IMemory>& mem) {
-    Mutex::Autolock lock(mLock);
-    if (checkPidAndHardware() != NO_ERROR) return;
-    mHardware->releaseRecordingFrame(mem);
-}
-
-bool CameraService::Client::previewEnabled() {
-    LOG1("previewEnabled (pid %d)", getCallingPid());
-
-    Mutex::Autolock lock(mLock);
-    if (checkPidAndHardware() != NO_ERROR) return false;
-    return mHardware->previewEnabled();
-}
-
-bool CameraService::Client::recordingEnabled() {
-    LOG1("recordingEnabled (pid %d)", getCallingPid());
-
-    Mutex::Autolock lock(mLock);
-    if (checkPidAndHardware() != NO_ERROR) return false;
-    return mHardware->recordingEnabled();
-}
-
-status_t CameraService::Client::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 CameraService::Client::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 CameraService::Client::takePicture() {
-    LOG1("takePicture (pid %d)", getCallingPid());
-
-    Mutex::Autolock lock(mLock);
-    status_t result = checkPidAndHardware();
-    if (result != NO_ERROR) return result;
-
-    enableMsgType(CAMERA_MSG_SHUTTER |
-                  CAMERA_MSG_POSTVIEW_FRAME |
-                  CAMERA_MSG_RAW_IMAGE |
-                  CAMERA_MSG_COMPRESSED_IMAGE);
-
-    return mHardware->takePicture();
-}
-
-// set preview/capture parameters - key/value pairs
-status_t CameraService::Client::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 CameraService::Client::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;
-}
-
-status_t CameraService::Client::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
-    LOG1("sendCommand (pid %d)", getCallingPid());
-    Mutex::Autolock lock(mLock);
-    status_t result = checkPidAndHardware();
-    if (result != NO_ERROR) return result;
-
-    if (cmd == CAMERA_CMD_SET_DISPLAY_ORIENTATION) {
-        // The orientation cannot be set during preview.
-        if (mHardware->previewEnabled()) {
-            return INVALID_OPERATION;
-        }
-        switch (arg1) {
-            case 0:
-                mOrientation = ISurface::BufferHeap::ROT_0;
-                break;
-            case 90:
-                mOrientation = ISurface::BufferHeap::ROT_90;
-                break;
-            case 180:
-                mOrientation = ISurface::BufferHeap::ROT_180;
-                break;
-            case 270:
-                mOrientation = ISurface::BufferHeap::ROT_270;
-                break;
-            default:
-                return BAD_VALUE;
-        }
-        return OK;
-    }
-
-    return mHardware->sendCommand(cmd, arg1, arg2);
-}
-
-// ----------------------------------------------------------------------------
-
-void CameraService::Client::enableMsgType(int32_t msgType) {
-    android_atomic_or(msgType, &mMsgEnabled);
-    mHardware->enableMsgType(msgType);
-}
-
-void CameraService::Client::disableMsgType(int32_t msgType) {
-    android_atomic_and(~msgType, &mMsgEnabled);
-    mHardware->disableMsgType(msgType);
-}
-
-#define CHECK_MESSAGE_INTERVAL 10 // 10ms
-bool CameraService::Client::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);
-    }
-    LOGW("lockIfMessageWanted(%d): dropped unwanted message", msgType);
-    return false;
-}
-
-// ----------------------------------------------------------------------------
-
-// Converts from a raw pointer to the client to a strong pointer during a
-// hardware callback. This requires the callbacks only happen when the client
-// is still alive.
-sp<CameraService::Client> CameraService::Client::getClientFromCookie(void* user) {
-    sp<Client> client = gCameraService->getClientById((int) user);
-
-    // This could happen if the Client is in the process of shutting down (the
-    // last strong reference is gone, but the destructor hasn't finished
-    // stopping the hardware).
-    if (client == 0) return NULL;
-
-    // The checks below are not necessary and are for debugging only.
-    if (client->mCameraService.get() != gCameraService) {
-        LOGE("mismatch service!");
-        return NULL;
-    }
-
-    if (client->mHardware == 0) {
-        LOGE("mHardware == 0: callback after disconnect()?");
-        return NULL;
-    }
-
-    return client;
-}
-
-// 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 CameraService::Client::notifyCallback(int32_t msgType, int32_t ext1,
-        int32_t ext2, void* user) {
-    LOG2("notifyCallback(%d)", msgType);
-
-    sp<Client> client = getClientFromCookie(user);
-    if (client == 0) return;
-    if (!client->lockIfMessageWanted(msgType)) return;
-
-    switch (msgType) {
-        case CAMERA_MSG_SHUTTER:
-            // ext1 is the dimension of the yuv picture.
-            client->handleShutter((image_rect_type *)ext1);
-            break;
-        default:
-            client->handleGenericNotify(msgType, ext1, ext2);
-            break;
-    }
-}
-
-void CameraService::Client::dataCallback(int32_t msgType,
-        const sp<IMemory>& dataPtr, void* user) {
-    LOG2("dataCallback(%d)", msgType);
-
-    sp<Client> client = getClientFromCookie(user);
-    if (client == 0) return;
-    if (!client->lockIfMessageWanted(msgType)) return;
-
-    if (dataPtr == 0) {
-        LOGE("Null data returned in data callback");
-        client->handleGenericNotify(CAMERA_MSG_ERROR, UNKNOWN_ERROR, 0);
-        return;
-    }
-
-    switch (msgType) {
-        case CAMERA_MSG_PREVIEW_FRAME:
-            client->handlePreviewData(dataPtr);
-            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);
-            break;
-    }
-}
-
-void CameraService::Client::dataCallbackTimestamp(nsecs_t timestamp,
-        int32_t msgType, const sp<IMemory>& dataPtr, void* user) {
-    LOG2("dataCallbackTimestamp(%d)", msgType);
-
-    sp<Client> client = getClientFromCookie(user);
-    if (client == 0) return;
-    if (!client->lockIfMessageWanted(msgType)) return;
-
-    if (dataPtr == 0) {
-        LOGE("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
-// "size" is the width and height of yuv picture for registerBuffer.
-// If it is NULL, use the picture size from parameters.
-void CameraService::Client::handleShutter(image_rect_type *size) {
-    mCameraService->playSound(SOUND_SHUTTER);
-
-    // Screen goes black after the buffer is unregistered.
-    if (mSurface != 0 && !mUseOverlay) {
-        mSurface->unregisterBuffers();
-    }
-
-    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);
-
-    // It takes some time before yuvPicture callback to be called.
-    // Register the buffer for raw image here to reduce latency.
-    if (mSurface != 0 && !mUseOverlay) {
-        int w, h;
-        CameraParameters params(mHardware->getParameters());
-        if (size == NULL) {
-            params.getPictureSize(&w, &h);
-        } else {
-            w = size->width;
-            h = size->height;
-            w &= ~1;
-            h &= ~1;
-            LOG1("Snapshot image width=%d, height=%d", w, h);
-        }
-        // FIXME: don't use hardcoded format constants here
-        ISurface::BufferHeap buffers(w, h, w, h,
-            HAL_PIXEL_FORMAT_YCrCb_420_SP, mOrientation, 0,
-            mHardware->getRawHeap());
-
-        mSurface->registerBuffers(buffers);
-        IPCThreadState::self()->flushCommands();
-    }
-
-    mLock.unlock();
-}
-
-// preview callback - frame buffer update
-void CameraService::Client::handlePreviewData(const sp<IMemory>& mem) {
-    ssize_t offset;
-    size_t size;
-    sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
-
-    if (!mUseOverlay) {
-        if (mSurface != 0) {
-            mSurface->postBuffer(offset);
-        }
-    }
-
-    // local copy of the callback flags
-    int flags = mPreviewCallbackFlag;
-
-    // is callback enabled?
-    if (!(flags & 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 & FRAME_CALLBACK_FLAG_ONE_SHOT_MASK)) {
-        LOG2("Disable preview callback");
-        mPreviewCallbackFlag &= ~(FRAME_CALLBACK_FLAG_ONE_SHOT_MASK |
-                                  FRAME_CALLBACK_FLAG_COPY_OUT_MASK |
-                                  FRAME_CALLBACK_FLAG_ENABLE_MASK);
-        if (mUseOverlay) {
-            disableMsgType(CAMERA_MSG_PREVIEW_FRAME);
-        }
-    }
-
-    if (c != 0) {
-        // Is the received frame copied out or not?
-        if (flags & FRAME_CALLBACK_FLAG_COPY_OUT_MASK) {
-            LOG2("frame is copied");
-            copyFrameAndPostCopiedFrame(c, heap, offset, size);
-        } else {
-            LOG2("frame is forwarded");
-            mLock.unlock();
-            c->dataCallback(CAMERA_MSG_PREVIEW_FRAME, mem);
-        }
-    } else {
-        mLock.unlock();
-    }
-}
-
-// picture callback - postview image ready
-void CameraService::Client::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);
-    }
-}
-
-// picture callback - raw image ready
-void CameraService::Client::handleRawPicture(const sp<IMemory>& mem) {
-    disableMsgType(CAMERA_MSG_RAW_IMAGE);
-
-    ssize_t offset;
-    size_t size;
-    sp<IMemoryHeap> heap = mem->getMemory(&offset, &size);
-
-    // Put the YUV version of the snapshot in the preview display.
-    if (mSurface != 0 && !mUseOverlay) {
-        mSurface->postBuffer(offset);
-    }
-
-    sp<ICameraClient> c = mCameraClient;
-    mLock.unlock();
-    if (c != 0) {
-        c->dataCallback(CAMERA_MSG_RAW_IMAGE, mem);
-    }
-}
-
-// picture callback - compressed picture ready
-void CameraService::Client::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);
-    }
-}
-
-
-void CameraService::Client::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 CameraService::Client::handleGenericData(int32_t msgType,
-    const sp<IMemory>& dataPtr) {
-    sp<ICameraClient> c = mCameraClient;
-    mLock.unlock();
-    if (c != 0) {
-        c->dataCallback(msgType, dataPtr);
-    }
-}
-
-void CameraService::Client::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 CameraService::Client::copyFrameAndPostCopiedFrame(
-        const sp<ICameraClient>& client, const sp<IMemoryHeap>& heap,
-        size_t offset, size_t size) {
-    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) {
-        LOGE("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) {
-        LOGE("failed to allocate space for frame callback");
-        mLock.unlock();
-        return;
-    }
-
-    mLock.unlock();
-    client->dataCallback(CAMERA_MSG_PREVIEW_FRAME, frame);
-}
-
-// ----------------------------------------------------------------------------
-
-static const int kDumpLockRetries = 50;
-static const int kDumpLockSleep = 60000;
-
-static bool tryLock(Mutex& mutex)
-{
-    bool locked = false;
-    for (int i = 0; i < kDumpLockRetries; ++i) {
-        if (mutex.tryLock() == NO_ERROR) {
-            locked = true;
-            break;
-        }
-        usleep(kDumpLockSleep);
-    }
-    return locked;
-}
-
-status_t CameraService::dump(int fd, const Vector<String16>& args) {
-    static const char* kDeadlockedString = "CameraService may be deadlocked\n";
-
-    const size_t SIZE = 256;
-    char buffer[SIZE];
-    String8 result;
-    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
-        snprintf(buffer, SIZE, "Permission Denial: "
-                "can't dump CameraService from pid=%d, uid=%d\n",
-                getCallingPid(),
-                getCallingUid());
-        result.append(buffer);
-        write(fd, result.string(), result.size());
-    } else {
-        bool locked = tryLock(mServiceLock);
-        // failed to lock - CameraService is probably deadlocked
-        if (!locked) {
-            String8 result(kDeadlockedString);
-            write(fd, result.string(), result.size());
-        }
-
-        bool hasClient = false;
-        for (int i = 0; i < mNumberOfCameras; i++) {
-            sp<Client> client = mClient[i].promote();
-            if (client == 0) continue;
-            hasClient = true;
-            sprintf(buffer, "Client[%d] (%p) PID: %d\n",
-                    i,
-                    client->getCameraClient()->asBinder().get(),
-                    client->mClientPid);
-            result.append(buffer);
-            write(fd, result.string(), result.size());
-            client->mHardware->dump(fd, args);
-        }
-        if (!hasClient) {
-            result.append("No camera client yet.\n");
-            write(fd, result.string(), result.size());
-        }
-
-        if (locked) mServiceLock.unlock();
-
-        // change logging level
-        int n = args.size();
-        for (int i = 0; i + 1 < n; i++) {
-            if (args[i] == String16("-v")) {
-                String8 levelStr(args[i+1]);
-                int level = atoi(levelStr.string());
-                sprintf(buffer, "Set Log Level to %d", level);
-                result.append(buffer);
-                setLogLevel(level);
-            }
-        }
-    }
-    return NO_ERROR;
-}
-
-}; // namespace android