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/*
**
** Copyright (C) 2013, 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 "ProCamera"
#include <utils/Log.h>
#include <utils/threads.h>
#include <utils/Mutex.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/IMemory.h>
#include <camera/ProCamera.h>
#include <camera/ICameraService.h>
#include <camera/IProCameraUser.h>
#include <camera/IProCameraCallbacks.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/Surface.h>
namespace android {
// client singleton for camera service binder interface
Mutex ProCamera::mLock;
sp<ICameraService> ProCamera::mCameraService;
sp<ProCamera::DeathNotifier> ProCamera::mDeathNotifier;
// establish binder interface to camera service
const sp<ICameraService>& ProCamera::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;
ALOGW("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);
}
ALOGE_IF(mCameraService==0, "no CameraService!?");
return mCameraService;
}
sp<ProCamera> ProCamera::connect(int cameraId)
{
ALOGV("connect");
sp<ProCamera> c = new ProCamera();
sp<IProCameraCallbacks> cl = c;
const sp<ICameraService>& cs = getCameraService();
if (cs != 0) {
c->mCamera = cs->connect(cl, cameraId);
}
if (c->mCamera != 0) {
c->mCamera->asBinder()->linkToDeath(c);
c->mStatus = NO_ERROR;
} else {
c.clear();
}
return c;
}
void ProCamera::disconnect()
{
ALOGV("disconnect");
if (mCamera != 0) {
mCamera->disconnect();
mCamera->asBinder()->unlinkToDeath(this);
mCamera = 0;
}
}
ProCamera::ProCamera()
{
}
ProCamera::~ProCamera()
{
}
sp<IProCameraUser> ProCamera::remote()
{
return mCamera;
}
void ProCamera::binderDied(const wp<IBinder>& who) {
ALOGW("IProCameraUser died");
notifyCallback(CAMERA_MSG_ERROR, CAMERA_ERROR_SERVER_DIED, 0);
}
void ProCamera::DeathNotifier::binderDied(const wp<IBinder>& who) {
ALOGV("binderDied");
Mutex::Autolock _l(ProCamera::mLock);
ProCamera::mCameraService.clear();
ALOGW("Camera service died!");
}
// callback from camera service
void ProCamera::notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
{
sp<ProCameraListener> listener;
{
Mutex::Autolock _l(mLock);
listener = mListener;
}
if (listener != NULL) {
listener->notify(msgType, ext1, ext2);
}
}
// callback from camera service when frame or image is ready
void ProCamera::dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
camera_frame_metadata_t *metadata)
{
sp<ProCameraListener> listener;
{
Mutex::Autolock _l(mLock);
listener = mListener;
}
if (listener != NULL) {
listener->postData(msgType, dataPtr, metadata);
}
}
// callback from camera service when timestamped frame is ready
void ProCamera::dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
const sp<IMemory>& dataPtr)
{
sp<ProCameraListener> listener;
{
Mutex::Autolock _l(mLock);
listener = mListener;
}
if (listener != NULL) {
listener->postDataTimestamp(timestamp, msgType, dataPtr);
} else {
ALOGW("No listener was set. Drop a recording frame.");
}
}
/* IProCameraUser's implementation */
status_t ProCamera::exclusiveTryLock()
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->exclusiveTryLock();
}
status_t ProCamera::exclusiveLock()
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->exclusiveLock();
}
status_t ProCamera::exclusiveUnlock()
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->exclusiveUnlock();
}
bool ProCamera::hasExclusiveLock()
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->hasExclusiveLock();
}
// Note that the callee gets a copy of the metadata.
int ProCamera::submitRequest(const struct camera_metadata* metadata,
bool streaming)
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->submitRequest(const_cast<struct camera_metadata*>(metadata),
streaming);
}
status_t ProCamera::cancelRequest(int requestId)
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->cancelRequest(requestId);
}
status_t ProCamera::requestStream(int streamId)
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->requestStream(streamId);
}
status_t ProCamera::cancelStream(int streamId)
{
sp <IProCameraUser> c = mCamera;
if (c == 0) return NO_INIT;
return c->cancelStream(streamId);
}
}; // namespace android
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