205 lines
6.2 KiB
C++
205 lines
6.2 KiB
C++
/*
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**
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** Copyright 2008, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Parcel.h>
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#include <ui/ICamera.h>
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#define LOG_TAG "@@@@@@@@@@@ CAMERA @@@@@@@@@@@"
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#include <utils/Log.h>
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namespace android {
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enum {
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DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
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SET_PREVIEW_DISPLAY,
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SET_HAS_FRAME_CALLBACK,
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START_PREVIEW,
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STOP_PREVIEW,
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AUTO_FOCUS,
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TAKE_PICTURE,
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SET_PARAMETERS,
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GET_PARAMETERS
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};
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class BpCamera: public BpInterface<ICamera>
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{
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public:
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BpCamera(const sp<IBinder>& impl)
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: BpInterface<ICamera>(impl)
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{
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}
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// disconnect from camera service
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void disconnect()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(DISCONNECT, data, &reply);
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}
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// pass the buffered ISurface to the camera service
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status_t setPreviewDisplay(const sp<ISurface>& surface)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeStrongBinder(surface->asBinder());
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remote()->transact(SET_PREVIEW_DISPLAY, data, &reply);
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return reply.readInt32();
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}
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// tell the service whether to callback with each preview frame
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void setHasFrameCallback(bool installed)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeInt32((int32_t)installed);
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remote()->transact(SET_HAS_FRAME_CALLBACK, data, &reply);
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}
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// start preview mode, must call setPreviewDisplay first
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status_t startPreview()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(START_PREVIEW, data, &reply);
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return reply.readInt32();
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}
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// stop preview mode
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void stopPreview()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(STOP_PREVIEW, data, &reply);
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}
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// auto focus
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status_t autoFocus()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(AUTO_FOCUS, data, &reply);
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status_t ret = reply.readInt32();
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return ret;
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}
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// take a picture - returns an IMemory (ref-counted mmap)
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status_t takePicture()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(TAKE_PICTURE, data, &reply);
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status_t ret = reply.readInt32();
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return ret;
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}
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// set preview/capture parameters - key/value pairs
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status_t setParameters(const String8& params)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeString8(params);
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remote()->transact(SET_PARAMETERS, data, &reply);
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return reply.readInt32();
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}
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// get preview/capture parameters - key/value pairs
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String8 getParameters() const
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{
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(GET_PARAMETERS, data, &reply);
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return reply.readString8();
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}
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};
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IMPLEMENT_META_INTERFACE(Camera, "android.hardware.ICamera");
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// ----------------------------------------------------------------------
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#define CHECK_INTERFACE(interface, data, reply) \
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do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
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LOGW("Call incorrectly routed to " #interface); \
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return PERMISSION_DENIED; \
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} } while (0)
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status_t BnCamera::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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switch(code) {
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case DISCONNECT: {
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CHECK_INTERFACE(ICamera, data, reply);
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disconnect();
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return NO_ERROR;
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} break;
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case SET_PREVIEW_DISPLAY: {
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CHECK_INTERFACE(ICamera, data, reply);
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sp<ISurface> surface = interface_cast<ISurface>(data.readStrongBinder());
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reply->writeInt32(setPreviewDisplay(surface));
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return NO_ERROR;
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} break;
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case SET_HAS_FRAME_CALLBACK: {
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CHECK_INTERFACE(ICamera, data, reply);
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bool installed = (bool)data.readInt32();
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setHasFrameCallback(installed);
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return NO_ERROR;
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} break;
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case START_PREVIEW: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(startPreview());
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return NO_ERROR;
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} break;
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case STOP_PREVIEW: {
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CHECK_INTERFACE(ICamera, data, reply);
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stopPreview();
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return NO_ERROR;
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} break;
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case AUTO_FOCUS: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(autoFocus());
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return NO_ERROR;
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} break;
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case TAKE_PICTURE: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(takePicture());
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return NO_ERROR;
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} break;
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case SET_PARAMETERS: {
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CHECK_INTERFACE(ICamera, data, reply);
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String8 params(data.readString8());
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reply->writeInt32(setParameters(params));
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return NO_ERROR;
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} break;
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case GET_PARAMETERS: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeString8(getParameters());
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return NO_ERROR;
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} break;
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default:
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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