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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 "ICamera"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <camera/CameraUtils.h>
#include <android/hardware/ICamera.h>
#include <android/hardware/ICameraClient.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/Surface.h>
#include <media/hardware/HardwareAPI.h>
namespace android {
namespace hardware {
enum {
DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
SET_PREVIEW_TARGET,
SET_PREVIEW_CALLBACK_FLAG,
SET_PREVIEW_CALLBACK_TARGET,
START_PREVIEW,
STOP_PREVIEW,
AUTO_FOCUS,
CANCEL_AUTO_FOCUS,
TAKE_PICTURE,
SET_PARAMETERS,
GET_PARAMETERS,
SEND_COMMAND,
CONNECT,
LOCK,
UNLOCK,
PREVIEW_ENABLED,
START_RECORDING,
STOP_RECORDING,
RECORDING_ENABLED,
RELEASE_RECORDING_FRAME,
SET_VIDEO_BUFFER_MODE,
SET_VIDEO_BUFFER_TARGET,
RELEASE_RECORDING_FRAME_HANDLE,
RELEASE_RECORDING_FRAME_HANDLE_BATCH,
SET_AUDIO_RESTRICTION,
GET_GLOBAL_AUDIO_RESTRICTION,
};
class BpCamera: public BpInterface<ICamera>
{
public:
explicit BpCamera(const sp<IBinder>& impl)
: BpInterface<ICamera>(impl)
{
}
// disconnect from camera service
binder::Status disconnect()
{
ALOGV("disconnect");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(DISCONNECT, data, &reply);
reply.readExceptionCode();
return binder::Status::ok();
}
// pass the buffered IGraphicBufferProducer to the camera service
status_t setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer)
{
ALOGV("setPreviewTarget");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
sp<IBinder> b(IInterface::asBinder(bufferProducer));
data.writeStrongBinder(b);
remote()->transact(SET_PREVIEW_TARGET, data, &reply);
return reply.readInt32();
}
// set the preview callback flag to affect how the received frames from
// preview are handled. See Camera.h for details.
void setPreviewCallbackFlag(int flag)
{
ALOGV("setPreviewCallbackFlag(%d)", flag);
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeInt32(flag);
remote()->transact(SET_PREVIEW_CALLBACK_FLAG, data, &reply);
}
status_t setPreviewCallbackTarget(
const sp<IGraphicBufferProducer>& callbackProducer)
{
ALOGV("setPreviewCallbackTarget");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
sp<IBinder> b(IInterface::asBinder(callbackProducer));
data.writeStrongBinder(b);
remote()->transact(SET_PREVIEW_CALLBACK_TARGET, data, &reply);
return reply.readInt32();
}
// start preview mode, must call setPreviewTarget first
status_t startPreview()
{
ALOGV("startPreview");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(START_PREVIEW, data, &reply);
return reply.readInt32();
}
// start recording mode, must call setPreviewTarget first
status_t startRecording()
{
ALOGV("startRecording");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(START_RECORDING, data, &reply);
return reply.readInt32();
}
// stop preview mode
void stopPreview()
{
ALOGV("stopPreview");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(STOP_PREVIEW, data, &reply);
}
// stop recording mode
void stopRecording()
{
ALOGV("stopRecording");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(STOP_RECORDING, data, &reply);
}
void releaseRecordingFrame(const sp<IMemory>& mem)
{
ALOGV("releaseRecordingFrame");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeStrongBinder(IInterface::asBinder(mem));
remote()->transact(RELEASE_RECORDING_FRAME, data, &reply);
}
void releaseRecordingFrameHandle(native_handle_t *handle) {
ALOGV("releaseRecordingFrameHandle");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeNativeHandle(handle);
remote()->transact(RELEASE_RECORDING_FRAME_HANDLE, data, &reply);
// Close the native handle because camera received a dup copy.
native_handle_close(handle);
native_handle_delete(handle);
}
void releaseRecordingFrameHandleBatch(const std::vector<native_handle_t*>& handles) {
ALOGV("releaseRecordingFrameHandleBatch");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
uint32_t n = handles.size();
data.writeUint32(n);
for (auto& handle : handles) {
data.writeNativeHandle(handle);
}
remote()->transact(RELEASE_RECORDING_FRAME_HANDLE_BATCH, data, &reply);
// Close the native handle because camera received a dup copy.
for (auto& handle : handles) {
native_handle_close(handle);
native_handle_delete(handle);
}
}
status_t setAudioRestriction(int32_t mode) {
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeInt32(mode);
remote()->transact(SET_AUDIO_RESTRICTION, data, &reply);
return reply.readInt32();
}
int32_t getGlobalAudioRestriction() {
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(GET_GLOBAL_AUDIO_RESTRICTION, data, &reply);
return reply.readInt32();
}
status_t setVideoBufferMode(int32_t videoBufferMode)
{
ALOGV("setVideoBufferMode: %d", videoBufferMode);
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeInt32(videoBufferMode);
remote()->transact(SET_VIDEO_BUFFER_MODE, data, &reply);
return reply.readInt32();
}
// check preview state
bool previewEnabled()
{
ALOGV("previewEnabled");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(PREVIEW_ENABLED, data, &reply);
return reply.readInt32();
}
// check recording state
bool recordingEnabled()
{
ALOGV("recordingEnabled");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(RECORDING_ENABLED, data, &reply);
return reply.readInt32();
}
// auto focus
status_t autoFocus()
{
ALOGV("autoFocus");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(AUTO_FOCUS, data, &reply);
status_t ret = reply.readInt32();
return ret;
}
// cancel focus
status_t cancelAutoFocus()
{
ALOGV("cancelAutoFocus");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(CANCEL_AUTO_FOCUS, data, &reply);
status_t ret = reply.readInt32();
return ret;
}
// take a picture - returns an IMemory (ref-counted mmap)
status_t takePicture(int msgType)
{
ALOGV("takePicture: 0x%x", msgType);
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeInt32(msgType);
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)
{
ALOGV("setParameters");
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
{
ALOGV("getParameters");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(GET_PARAMETERS, data, &reply);
return reply.readString8();
}
virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2)
{
ALOGV("sendCommand");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeInt32(cmd);
data.writeInt32(arg1);
data.writeInt32(arg2);
remote()->transact(SEND_COMMAND, data, &reply);
return reply.readInt32();
}
virtual status_t connect(const sp<ICameraClient>& cameraClient)
{
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
data.writeStrongBinder(IInterface::asBinder(cameraClient));
remote()->transact(CONNECT, data, &reply);
return reply.readInt32();
}
virtual status_t lock()
{
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(LOCK, data, &reply);
return reply.readInt32();
}
virtual status_t unlock()
{
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
remote()->transact(UNLOCK, data, &reply);
return reply.readInt32();
}
status_t setVideoTarget(const sp<IGraphicBufferProducer>& bufferProducer)
{
ALOGV("setVideoTarget");
Parcel data, reply;
data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
sp<IBinder> b(IInterface::asBinder(bufferProducer));
data.writeStrongBinder(b);
remote()->transact(SET_VIDEO_BUFFER_TARGET, data, &reply);
return reply.readInt32();
}
};
IMPLEMENT_META_INTERFACE(Camera, "android.hardware.ICamera");
// ----------------------------------------------------------------------
status_t BnCamera::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case DISCONNECT: {
ALOGV("DISCONNECT");
CHECK_INTERFACE(ICamera, data, reply);
disconnect();
reply->writeNoException();
return NO_ERROR;
} break;
case SET_PREVIEW_TARGET: {
ALOGV("SET_PREVIEW_TARGET");
CHECK_INTERFACE(ICamera, data, reply);
sp<IGraphicBufferProducer> st =
interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
reply->writeInt32(setPreviewTarget(st));
return NO_ERROR;
} break;
case SET_PREVIEW_CALLBACK_FLAG: {
ALOGV("SET_PREVIEW_CALLBACK_TYPE");
CHECK_INTERFACE(ICamera, data, reply);
int callback_flag = data.readInt32();
setPreviewCallbackFlag(callback_flag);
return NO_ERROR;
} break;
case SET_PREVIEW_CALLBACK_TARGET: {
ALOGV("SET_PREVIEW_CALLBACK_TARGET");
CHECK_INTERFACE(ICamera, data, reply);
sp<IGraphicBufferProducer> cp =
interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
reply->writeInt32(setPreviewCallbackTarget(cp));
return NO_ERROR;
}
case START_PREVIEW: {
ALOGV("START_PREVIEW");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(startPreview());
return NO_ERROR;
} break;
case START_RECORDING: {
ALOGV("START_RECORDING");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(startRecording());
return NO_ERROR;
} break;
case STOP_PREVIEW: {
ALOGV("STOP_PREVIEW");
CHECK_INTERFACE(ICamera, data, reply);
stopPreview();
return NO_ERROR;
} break;
case STOP_RECORDING: {
ALOGV("STOP_RECORDING");
CHECK_INTERFACE(ICamera, data, reply);
stopRecording();
return NO_ERROR;
} break;
case RELEASE_RECORDING_FRAME: {
ALOGV("RELEASE_RECORDING_FRAME");
CHECK_INTERFACE(ICamera, data, reply);
sp<IMemory> mem = interface_cast<IMemory>(data.readStrongBinder());
releaseRecordingFrame(mem);
return NO_ERROR;
} break;
case RELEASE_RECORDING_FRAME_HANDLE: {
ALOGV("RELEASE_RECORDING_FRAME_HANDLE");
CHECK_INTERFACE(ICamera, data, reply);
// releaseRecordingFrameHandle will be responsble to close the native handle.
releaseRecordingFrameHandle(data.readNativeHandle());
return NO_ERROR;
} break;
case RELEASE_RECORDING_FRAME_HANDLE_BATCH: {
ALOGV("RELEASE_RECORDING_FRAME_HANDLE_BATCH");
CHECK_INTERFACE(ICamera, data, reply);
// releaseRecordingFrameHandle will be responsble to close the native handle.
uint32_t n = data.readUint32();
std::vector<native_handle_t*> handles;
handles.reserve(n);
for (uint32_t i = 0; i < n; i++) {
handles.push_back(data.readNativeHandle());
}
releaseRecordingFrameHandleBatch(handles);
return NO_ERROR;
} break;
case SET_VIDEO_BUFFER_MODE: {
ALOGV("SET_VIDEO_BUFFER_MODE");
CHECK_INTERFACE(ICamera, data, reply);
int32_t mode = data.readInt32();
reply->writeInt32(setVideoBufferMode(mode));
return NO_ERROR;
} break;
case PREVIEW_ENABLED: {
ALOGV("PREVIEW_ENABLED");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(previewEnabled());
return NO_ERROR;
} break;
case RECORDING_ENABLED: {
ALOGV("RECORDING_ENABLED");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(recordingEnabled());
return NO_ERROR;
} break;
case AUTO_FOCUS: {
ALOGV("AUTO_FOCUS");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(autoFocus());
return NO_ERROR;
} break;
case CANCEL_AUTO_FOCUS: {
ALOGV("CANCEL_AUTO_FOCUS");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(cancelAutoFocus());
return NO_ERROR;
} break;
case TAKE_PICTURE: {
ALOGV("TAKE_PICTURE");
CHECK_INTERFACE(ICamera, data, reply);
int msgType = data.readInt32();
reply->writeInt32(takePicture(msgType));
return NO_ERROR;
} break;
case SET_PARAMETERS: {
ALOGV("SET_PARAMETERS");
CHECK_INTERFACE(ICamera, data, reply);
String8 params(data.readString8());
reply->writeInt32(setParameters(params));
return NO_ERROR;
} break;
case GET_PARAMETERS: {
ALOGV("GET_PARAMETERS");
CHECK_INTERFACE(ICamera, data, reply);
reply->writeString8(getParameters());
return NO_ERROR;
} break;
case SEND_COMMAND: {
ALOGV("SEND_COMMAND");
CHECK_INTERFACE(ICamera, data, reply);
int command = data.readInt32();
int arg1 = data.readInt32();
int arg2 = data.readInt32();
reply->writeInt32(sendCommand(command, arg1, arg2));
return NO_ERROR;
} break;
case CONNECT: {
CHECK_INTERFACE(ICamera, data, reply);
sp<ICameraClient> cameraClient = interface_cast<ICameraClient>(data.readStrongBinder());
reply->writeInt32(connect(cameraClient));
return NO_ERROR;
} break;
case LOCK: {
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(lock());
return NO_ERROR;
} break;
case UNLOCK: {
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(unlock());
return NO_ERROR;
} break;
case SET_VIDEO_BUFFER_TARGET: {
ALOGV("SET_VIDEO_BUFFER_TARGET");
CHECK_INTERFACE(ICamera, data, reply);
sp<IGraphicBufferProducer> st =
interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
reply->writeInt32(setVideoTarget(st));
return NO_ERROR;
} break;
case SET_AUDIO_RESTRICTION: {
CHECK_INTERFACE(ICamera, data, reply);
int32_t mode = data.readInt32();
reply->writeInt32(setAudioRestriction(mode));
return NO_ERROR;
} break;
case GET_GLOBAL_AUDIO_RESTRICTION: {
CHECK_INTERFACE(ICamera, data, reply);
reply->writeInt32(getGlobalAudioRestriction());
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
} // namespace hardware
} // namespace android