diff options
Diffstat (limited to 'libs/ui/ICamera.cpp')
| -rw-r--r-- | libs/ui/ICamera.cpp | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/libs/ui/ICamera.cpp b/libs/ui/ICamera.cpp new file mode 100644 index 000000000000..420bb490a01f --- /dev/null +++ b/libs/ui/ICamera.cpp @@ -0,0 +1,204 @@ +/* +** +** 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. +*/ + +#include <stdint.h> +#include <sys/types.h> + +#include <utils/Parcel.h> + +#include <ui/ICamera.h> + +#define LOG_TAG "@@@@@@@@@@@ CAMERA @@@@@@@@@@@" +#include <utils/Log.h> + +namespace android { + +enum { + DISCONNECT = IBinder::FIRST_CALL_TRANSACTION, + SET_PREVIEW_DISPLAY, + SET_HAS_FRAME_CALLBACK, + START_PREVIEW, + STOP_PREVIEW, + AUTO_FOCUS, + TAKE_PICTURE, + SET_PARAMETERS, + GET_PARAMETERS +}; + +class BpCamera: public BpInterface<ICamera> +{ +public: + BpCamera(const sp<IBinder>& impl) + : BpInterface<ICamera>(impl) + { + } + + // disconnect from camera service + void disconnect() + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(DISCONNECT, data, &reply); + } + + // pass the buffered ISurface to the camera service + status_t setPreviewDisplay(const sp<ISurface>& surface) + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + data.writeStrongBinder(surface->asBinder()); + remote()->transact(SET_PREVIEW_DISPLAY, data, &reply); + return reply.readInt32(); + } + + // tell the service whether to callback with each preview frame + void setHasFrameCallback(bool installed) + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + data.writeInt32((int32_t)installed); + remote()->transact(SET_HAS_FRAME_CALLBACK, data, &reply); + } + + // start preview mode, must call setPreviewDisplay first + status_t startPreview() + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(START_PREVIEW, data, &reply); + return reply.readInt32(); + } + + // stop preview mode + void stopPreview() + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(STOP_PREVIEW, data, &reply); + } + + // auto focus + status_t autoFocus() + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(AUTO_FOCUS, data, &reply); + status_t ret = reply.readInt32(); + return ret; + } + + // take a picture - returns an IMemory (ref-counted mmap) + status_t takePicture() + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(TAKE_PICTURE, data, &reply); + status_t ret = reply.readInt32(); + return ret; + } + + // set preview/capture parameters - key/value pairs + status_t setParameters(const String8& params) + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + data.writeString8(params); + remote()->transact(SET_PARAMETERS, data, &reply); + return reply.readInt32(); + } + + // get preview/capture parameters - key/value pairs + String8 getParameters() const + { + Parcel data, reply; + data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); + remote()->transact(GET_PARAMETERS, data, &reply); + return reply.readString8(); + } +}; + +IMPLEMENT_META_INTERFACE(Camera, "android.hardware.ICamera"); + +// ---------------------------------------------------------------------- + +#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 BnCamera::onTransact( + uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) +{ + switch(code) { + case DISCONNECT: { + CHECK_INTERFACE(ICamera, data, reply); + disconnect(); + return NO_ERROR; + } break; + case SET_PREVIEW_DISPLAY: { + CHECK_INTERFACE(ICamera, data, reply); + sp<ISurface> surface = interface_cast<ISurface>(data.readStrongBinder()); + reply->writeInt32(setPreviewDisplay(surface)); + return NO_ERROR; + } break; + case SET_HAS_FRAME_CALLBACK: { + CHECK_INTERFACE(ICamera, data, reply); + bool installed = (bool)data.readInt32(); + setHasFrameCallback(installed); + return NO_ERROR; + } break; + case START_PREVIEW: { + CHECK_INTERFACE(ICamera, data, reply); + reply->writeInt32(startPreview()); + return NO_ERROR; + } break; + case STOP_PREVIEW: { + CHECK_INTERFACE(ICamera, data, reply); + stopPreview(); + return NO_ERROR; + } break; + case AUTO_FOCUS: { + CHECK_INTERFACE(ICamera, data, reply); + reply->writeInt32(autoFocus()); + return NO_ERROR; + } break; + case TAKE_PICTURE: { + CHECK_INTERFACE(ICamera, data, reply); + reply->writeInt32(takePicture()); + return NO_ERROR; + } break; + case SET_PARAMETERS: { + CHECK_INTERFACE(ICamera, data, reply); + String8 params(data.readString8()); + reply->writeInt32(setParameters(params)); + return NO_ERROR; + } break; + case GET_PARAMETERS: { + CHECK_INTERFACE(ICamera, data, reply); + reply->writeString8(getParameters()); + return NO_ERROR; + } break; + default: + return BBinder::onTransact(code, data, reply, flags); + } +} + +// ---------------------------------------------------------------------------- + +}; // namespace android + |