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/*
**
** 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 "ICameraClient"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <ui/ICameraClient.h>
namespace android {
enum {
SHUTTER_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
RAW_CALLBACK,
JPEG_CALLBACK,
PREVIEW_CALLBACK,
ERROR_CALLBACK,
AUTOFOCUS_CALLBACK,
RECORDING_CALLBACK,
};
class BpCameraClient: public BpInterface<ICameraClient>
{
public:
BpCameraClient(const sp<IBinder>& impl)
: BpInterface<ICameraClient>(impl)
{
}
// callback to let the app know the shutter has closed, ideal for playing the shutter sound
void shutterCallback()
{
LOGV("shutterCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
remote()->transact(SHUTTER_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app with picture data
void rawCallback(const sp<IMemory>& picture)
{
LOGV("rawCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeStrongBinder(picture->asBinder());
remote()->transact(RAW_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app with picture data
void jpegCallback(const sp<IMemory>& picture)
{
LOGV("jpegCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeStrongBinder(picture->asBinder());
remote()->transact(JPEG_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app with preview frame data
void previewCallback(const sp<IMemory>& frame)
{
LOGV("previewCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeStrongBinder(frame->asBinder());
remote()->transact(PREVIEW_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app with recording frame data
void recordingCallback(const sp<IMemory>& frame)
{
LOGV("recordingCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeStrongBinder(frame->asBinder());
remote()->transact(RECORDING_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app to report error
void errorCallback(status_t error)
{
LOGV("errorCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt32(error);
remote()->transact(ERROR_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// callback from camera service to app to report autofocus completion
void autoFocusCallback(bool focused)
{
LOGV("autoFocusCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt32(focused);
remote()->transact(AUTOFOCUS_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
// ----------------------------------------------------------------------
#define CHECK_INTERFACE(interface, data, reply) \
do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
LOGW("Call incorrectly routed to " #interface); \
return PERMISSION_DENIED; \
} } while (0)
status_t BnCameraClient::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case SHUTTER_CALLBACK: {
LOGV("SHUTTER_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
shutterCallback();
return NO_ERROR;
} break;
case RAW_CALLBACK: {
LOGV("RAW_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
sp<IMemory> picture = interface_cast<IMemory>(data.readStrongBinder());
rawCallback(picture);
return NO_ERROR;
} break;
case JPEG_CALLBACK: {
LOGV("JPEG_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
sp<IMemory> picture = interface_cast<IMemory>(data.readStrongBinder());
jpegCallback(picture);
return NO_ERROR;
} break;
case PREVIEW_CALLBACK: {
LOGV("PREVIEW_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
sp<IMemory> frame = interface_cast<IMemory>(data.readStrongBinder());
previewCallback(frame);
return NO_ERROR;
} break;
case RECORDING_CALLBACK: {
LOGV("RECORDING_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
sp<IMemory> frame = interface_cast<IMemory>(data.readStrongBinder());
recordingCallback(frame);
return NO_ERROR;
} break;
case ERROR_CALLBACK: {
LOGV("ERROR_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
status_t error = data.readInt32();
errorCallback(error);
return NO_ERROR;
} break;
case AUTOFOCUS_CALLBACK: {
LOGV("AUTOFOCUS_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
bool focused = (bool)data.readInt32();
autoFocusCallback(focused);
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
}; // namespace android
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