replicant-frameworks_native/libs/ui/Camera.cpp
James Dong f1a5314076 Fix a media server crash (bug 1807910): part one
Add a factory method that creates a Camera object from a remote client

Next:
The changes in authordriver.cpp and android_camera_input.cpp will come.
and the constructor for Camera object will be removed.
2009-04-23 14:07:23 -07:00

422 lines
9.7 KiB
C++

/*
**
** 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_NDEBUG 0
#define LOG_TAG "Camera"
#include <utils/Log.h>
#include <utils/IServiceManager.h>
#include <utils/threads.h>
#include <utils/IMemory.h>
#include <ui/Surface.h>
#include <ui/Camera.h>
#include <ui/ICameraService.h>
namespace android {
// client singleton for camera service binder interface
Mutex Camera::mLock;
sp<ICameraService> Camera::mCameraService;
sp<Camera::DeathNotifier> Camera::mDeathNotifier;
// establish binder interface to camera service
const sp<ICameraService>& Camera::getCameraService()
{
Mutex::Autolock _l(mLock);
if (mCameraService.get() == 0) {
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder;
do {
binder = sm->getService(String16("media.camera"));
if (binder != 0)
break;
LOGW("CameraService not published, waiting...");
usleep(500000); // 0.5 s
} while(true);
if (mDeathNotifier == NULL) {
mDeathNotifier = new DeathNotifier();
}
binder->linkToDeath(mDeathNotifier);
mCameraService = interface_cast<ICameraService>(binder);
}
LOGE_IF(mCameraService==0, "no CameraService!?");
return mCameraService;
}
// ---------------------------------------------------------------------------
Camera::Camera()
{
init();
}
Camera::Camera(const sp<ICamera>& camera)
{
init();
// connect this client to existing camera remote
if (camera->connect(this) == NO_ERROR) {
mStatus = NO_ERROR;
mCamera = camera;
camera->asBinder()->linkToDeath(this);
}
}
sp<Camera> Camera::create(const sp<ICamera>& camera)
{
sp<Camera> c = new Camera();
// connect this client to existing camera remote
if (camera->connect(c) == NO_ERROR) {
c->mStatus = NO_ERROR;
c->mCamera = camera;
camera->asBinder()->linkToDeath(c);
}
return c;
}
void Camera::init()
{
mStatus = UNKNOWN_ERROR;
mShutterCallback = 0;
mShutterCallbackCookie = 0;
mRawCallback = 0;
mRawCallbackCookie = 0;
mJpegCallback = 0;
mJpegCallbackCookie = 0;
mPreviewCallback = 0;
mPreviewCallbackCookie = 0;
mRecordingCallback = 0;
mRecordingCallbackCookie = 0;
mErrorCallback = 0;
mErrorCallbackCookie = 0;
mAutoFocusCallback = 0;
mAutoFocusCallbackCookie = 0;
}
Camera::~Camera()
{
disconnect();
}
sp<Camera> Camera::connect()
{
LOGV("connect");
sp<Camera> c = new Camera();
const sp<ICameraService>& cs = getCameraService();
if (cs != 0) {
c->mCamera = cs->connect(c);
}
if (c->mCamera != 0) {
c->mCamera->asBinder()->linkToDeath(c);
c->mStatus = NO_ERROR;
} else {
c.clear();
}
return c;
}
void Camera::disconnect()
{
LOGV("disconnect");
if (mCamera != 0) {
mErrorCallback = 0;
mCamera->disconnect();
mCamera = 0;
}
}
status_t Camera::reconnect()
{
LOGV("reconnect");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->connect(this);
}
sp<ICamera> Camera::remote()
{
return mCamera;
}
status_t Camera::lock()
{
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->lock();
}
status_t Camera::unlock()
{
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->unlock();
}
// pass the buffered ISurface to the camera service
status_t Camera::setPreviewDisplay(const sp<Surface>& surface)
{
LOGV("setPreviewDisplay");
if (surface == 0) {
LOGE("app passed NULL surface");
return NO_INIT;
}
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->setPreviewDisplay(surface->getISurface());
}
status_t Camera::setPreviewDisplay(const sp<ISurface>& surface)
{
LOGV("setPreviewDisplay");
if (surface == 0) {
LOGE("app passed NULL surface");
return NO_INIT;
}
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->setPreviewDisplay(surface);
}
// start preview mode, must call setPreviewDisplay first
status_t Camera::startPreview()
{
LOGV("startPreview");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->startPreview();
}
// start recording mode, must call setPreviewDisplay first
status_t Camera::startRecording()
{
LOGV("startRecording");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->startRecording();
}
// stop preview mode
void Camera::stopPreview()
{
LOGV("stopPreview");
sp <ICamera> c = mCamera;
if (c == 0) return;
c->stopPreview();
}
// stop recording mode
void Camera::stopRecording()
{
LOGV("stopRecording");
sp <ICamera> c = mCamera;
if (c == 0) return;
c->stopRecording();
}
// release a recording frame
void Camera::releaseRecordingFrame(const sp<IMemory>& mem)
{
LOGV("releaseRecordingFrame");
sp <ICamera> c = mCamera;
if (c == 0) return;
c->releaseRecordingFrame(mem);
}
// get preview state
bool Camera::previewEnabled()
{
LOGV("previewEnabled");
sp <ICamera> c = mCamera;
if (c == 0) return false;
return c->previewEnabled();
}
// get recording state
bool Camera::recordingEnabled()
{
LOGV("recordingEnabled");
sp <ICamera> c = mCamera;
if (c == 0) return false;
return c->recordingEnabled();
}
status_t Camera::autoFocus()
{
LOGV("autoFocus");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->autoFocus();
}
// take a picture
status_t Camera::takePicture()
{
LOGV("takePicture");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->takePicture();
}
// set preview/capture parameters - key/value pairs
status_t Camera::setParameters(const String8& params)
{
LOGV("setParameters");
sp <ICamera> c = mCamera;
if (c == 0) return NO_INIT;
return c->setParameters(params);
}
// get preview/capture parameters - key/value pairs
String8 Camera::getParameters() const
{
LOGV("getParameters");
String8 params;
sp <ICamera> c = mCamera;
if (c != 0) params = mCamera->getParameters();
return params;
}
void Camera::setAutoFocusCallback(autofocus_callback cb, void *cookie)
{
LOGV("setAutoFocusCallback");
mAutoFocusCallback = cb;
mAutoFocusCallbackCookie = cookie;
}
void Camera::setShutterCallback(shutter_callback cb, void *cookie)
{
LOGV("setShutterCallback");
mShutterCallback = cb;
mShutterCallbackCookie = cookie;
}
void Camera::setRawCallback(frame_callback cb, void *cookie)
{
LOGV("setRawCallback");
mRawCallback = cb;
mRawCallbackCookie = cookie;
}
void Camera::setJpegCallback(frame_callback cb, void *cookie)
{
LOGV("setJpegCallback");
mJpegCallback = cb;
mJpegCallbackCookie = cookie;
}
void Camera::setPreviewCallback(frame_callback cb, void *cookie, int flag)
{
LOGV("setPreviewCallback");
mPreviewCallback = cb;
mPreviewCallbackCookie = cookie;
sp <ICamera> c = mCamera;
if (c == 0) return;
mCamera->setPreviewCallbackFlag(flag);
}
void Camera::setRecordingCallback(frame_callback cb, void *cookie)
{
LOGV("setRecordingCallback");
mRecordingCallback = cb;
mRecordingCallbackCookie = cookie;
}
void Camera::setErrorCallback(error_callback cb, void *cookie)
{
LOGV("setErrorCallback");
mErrorCallback = cb;
mErrorCallbackCookie = cookie;
}
void Camera::autoFocusCallback(bool focused)
{
LOGV("autoFocusCallback");
if (mAutoFocusCallback) {
mAutoFocusCallback(focused, mAutoFocusCallbackCookie);
}
}
void Camera::shutterCallback()
{
LOGV("shutterCallback");
if (mShutterCallback) {
mShutterCallback(mShutterCallbackCookie);
}
}
void Camera::rawCallback(const sp<IMemory>& picture)
{
LOGV("rawCallback");
if (mRawCallback) {
mRawCallback(picture, mRawCallbackCookie);
}
}
// callback from camera service when image is ready
void Camera::jpegCallback(const sp<IMemory>& picture)
{
LOGV("jpegCallback");
if (mJpegCallback) {
mJpegCallback(picture, mJpegCallbackCookie);
}
}
// callback from camera service when preview frame is ready
void Camera::previewCallback(const sp<IMemory>& frame)
{
LOGV("frameCallback");
if (mPreviewCallback) {
mPreviewCallback(frame, mPreviewCallbackCookie);
}
}
// callback from camera service when a recording frame is ready
void Camera::recordingCallback(const sp<IMemory>& frame)
{
LOGV("recordingCallback");
if (mRecordingCallback) {
mRecordingCallback(frame, mRecordingCallbackCookie);
}
}
// callback from camera service when an error occurs in preview or takePicture
void Camera::errorCallback(status_t error)
{
LOGV("errorCallback");
if (mErrorCallback) {
mErrorCallback(error, mErrorCallbackCookie);
}
}
void Camera::binderDied(const wp<IBinder>& who) {
LOGW("ICamera died");
if (mErrorCallback) {
mErrorCallback(DEAD_OBJECT, mErrorCallbackCookie);
}
}
void Camera::DeathNotifier::binderDied(const wp<IBinder>& who) {
LOGV("binderDied");
Mutex::Autolock _l(Camera::mLock);
Camera::mCameraService.clear();
LOGW("Camera server died!");
}
}; // namespace android