380 lines
12 KiB
C++
380 lines
12 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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//#define LOG_NDEBUG 0
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#define LOG_TAG "ICamera"
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#include <utils/Log.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <binder/Parcel.h>
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#include <ui/ICamera.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_PREVIEW_CALLBACK_FLAG,
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START_PREVIEW,
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STOP_PREVIEW,
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AUTO_FOCUS,
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CANCEL_AUTO_FOCUS,
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TAKE_PICTURE,
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SET_PARAMETERS,
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GET_PARAMETERS,
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SEND_COMMAND,
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CONNECT,
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LOCK,
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UNLOCK,
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PREVIEW_ENABLED,
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START_RECORDING,
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STOP_RECORDING,
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RECORDING_ENABLED,
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RELEASE_RECORDING_FRAME,
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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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LOGV("disconnect");
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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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LOGV("setPreviewDisplay");
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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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// set the preview callback flag to affect how the received frames from
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// preview are handled. See Camera.h for details.
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void setPreviewCallbackFlag(int flag)
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{
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LOGV("setPreviewCallbackFlag(%d)", flag);
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeInt32(flag);
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remote()->transact(SET_PREVIEW_CALLBACK_FLAG, 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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LOGV("startPreview");
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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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// start recording mode, must call setPreviewDisplay first
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status_t startRecording()
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{
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LOGV("startRecording");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(START_RECORDING, 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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LOGV("stopPreview");
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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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// stop recording mode
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void stopRecording()
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{
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LOGV("stopRecording");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(STOP_RECORDING, data, &reply);
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}
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void releaseRecordingFrame(const sp<IMemory>& mem)
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{
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LOGV("releaseRecordingFrame");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeStrongBinder(mem->asBinder());
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remote()->transact(RELEASE_RECORDING_FRAME, data, &reply);
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}
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// check preview state
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bool previewEnabled()
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{
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LOGV("previewEnabled");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(PREVIEW_ENABLED, data, &reply);
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return reply.readInt32();
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}
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// check recording state
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bool recordingEnabled()
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{
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LOGV("recordingEnabled");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(RECORDING_ENABLED, data, &reply);
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return reply.readInt32();
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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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LOGV("autoFocus");
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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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// cancel focus
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status_t cancelAutoFocus()
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{
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LOGV("cancelAutoFocus");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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remote()->transact(CANCEL_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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LOGV("takePicture");
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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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LOGV("setParameters");
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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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LOGV("getParameters");
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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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virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2)
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{
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LOGD("sendCommand");
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Parcel data, reply;
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data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
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data.writeInt32(cmd);
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data.writeInt32(arg1);
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data.writeInt32(arg2);
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remote()->transact(SEND_COMMAND, data, &reply);
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return reply.readInt32();
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}
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virtual status_t connect(const sp<ICameraClient>& cameraClient)
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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(cameraClient->asBinder());
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remote()->transact(CONNECT, data, &reply);
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return reply.readInt32();
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}
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virtual status_t lock()
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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(LOCK, data, &reply);
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return reply.readInt32();
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}
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virtual status_t unlock()
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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(UNLOCK, data, &reply);
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return reply.readInt32();
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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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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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LOGV("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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LOGV("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_PREVIEW_CALLBACK_FLAG: {
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LOGV("SET_PREVIEW_CALLBACK_TYPE");
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CHECK_INTERFACE(ICamera, data, reply);
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int callback_flag = data.readInt32();
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setPreviewCallbackFlag(callback_flag);
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return NO_ERROR;
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} break;
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case START_PREVIEW: {
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LOGV("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 START_RECORDING: {
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LOGV("START_RECORDING");
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(startRecording());
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return NO_ERROR;
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} break;
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case STOP_PREVIEW: {
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LOGV("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 STOP_RECORDING: {
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LOGV("STOP_RECORDING");
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CHECK_INTERFACE(ICamera, data, reply);
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stopRecording();
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return NO_ERROR;
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} break;
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case RELEASE_RECORDING_FRAME: {
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LOGV("RELEASE_RECORDING_FRAME");
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CHECK_INTERFACE(ICamera, data, reply);
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sp<IMemory> mem = interface_cast<IMemory>(data.readStrongBinder());
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releaseRecordingFrame(mem);
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return NO_ERROR;
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} break;
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case PREVIEW_ENABLED: {
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LOGV("PREVIEW_ENABLED");
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(previewEnabled());
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return NO_ERROR;
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} break;
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case RECORDING_ENABLED: {
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LOGV("RECORDING_ENABLED");
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(recordingEnabled());
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return NO_ERROR;
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} break;
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case AUTO_FOCUS: {
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LOGV("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 CANCEL_AUTO_FOCUS: {
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LOGV("CANCEL_AUTO_FOCUS");
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(cancelAutoFocus());
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return NO_ERROR;
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} break;
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case TAKE_PICTURE: {
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LOGV("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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LOGV("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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LOGV("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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case SEND_COMMAND: {
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LOGD("SEND_COMMAND");
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CHECK_INTERFACE(ICamera, data, reply);
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int command = data.readInt32();
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int arg1 = data.readInt32();
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int arg2 = data.readInt32();
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reply->writeInt32(sendCommand(command, arg1, arg2));
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return NO_ERROR;
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} break;
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case CONNECT: {
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CHECK_INTERFACE(ICamera, data, reply);
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sp<ICameraClient> cameraClient = interface_cast<ICameraClient>(data.readStrongBinder());
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reply->writeInt32(connect(cameraClient));
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return NO_ERROR;
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} break;
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case LOCK: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(lock());
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return NO_ERROR;
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} break;
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case UNLOCK: {
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CHECK_INTERFACE(ICamera, data, reply);
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reply->writeInt32(unlock());
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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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