/*
**
** Copyright 2013, 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 "ICameraDeviceUser"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <camera/camera2/ICameraDeviceUser.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/Surface.h>
#include <camera/CameraMetadata.h>
#include <camera/camera2/CaptureRequest.h>
namespace android {
typedef Parcel::WritableBlob WritableBlob;
typedef Parcel::ReadableBlob ReadableBlob;
enum {
DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
SUBMIT_REQUEST,
CANCEL_REQUEST,
DELETE_STREAM,
CREATE_STREAM,
CREATE_DEFAULT_REQUEST,
GET_CAMERA_INFO,
WAIT_UNTIL_IDLE,
FLUSH
};
namespace {
// Read empty strings without printing a false error message.
String16 readMaybeEmptyString16(const Parcel& parcel) {
size_t len;
const char16_t* str = parcel.readString16Inplace(&len);
if (str != NULL) {
return String16(str, len);
} else {
return String16();
}
}
};
class BpCameraDeviceUser : public BpInterface<ICameraDeviceUser>
{
public:
BpCameraDeviceUser(const sp<IBinder>& impl)
: BpInterface<ICameraDeviceUser>(impl)
{
}
// disconnect from camera service
void disconnect()
{
ALOGV("disconnect");
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
remote()->transact(DISCONNECT, data, &reply);
reply.readExceptionCode();
}
virtual int submitRequest(sp<CaptureRequest> request, bool streaming)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
// arg0 = CaptureRequest
if (request != 0) {
data.writeInt32(1);
request->writeToParcel(&data);
} else {
data.writeInt32(0);
}
// arg1 = streaming (bool)
data.writeInt32(streaming);
remote()->transact(SUBMIT_REQUEST, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
virtual status_t cancelRequest(int requestId)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
data.writeInt32(requestId);
remote()->transact(CANCEL_REQUEST, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
virtual status_t deleteStream(int streamId)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
data.writeInt32(streamId);
remote()->transact(DELETE_STREAM, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
virtual status_t createStream(int width, int height, int format,
const sp<IGraphicBufferProducer>& bufferProducer)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
data.writeInt32(width);
data.writeInt32(height);
data.writeInt32(format);
data.writeInt32(1); // marker that bufferProducer is not null
data.writeString16(String16("unknown_name")); // name of surface
sp<IBinder> b(bufferProducer->asBinder());
data.writeStrongBinder(b);
remote()->transact(CREATE_STREAM, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
// Create a request object from a template.
virtual status_t createDefaultRequest(int templateId,
/*out*/
CameraMetadata* request)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
data.writeInt32(templateId);
remote()->transact(CREATE_DEFAULT_REQUEST, data, &reply);
reply.readExceptionCode();
status_t result = reply.readInt32();
CameraMetadata out;
if (reply.readInt32() != 0) {
out.readFromParcel(&reply);
}
if (request != NULL) {
request->swap(out);
}
return result;
}
virtual status_t getCameraInfo(CameraMetadata* info)
{
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
remote()->transact(GET_CAMERA_INFO, data, &reply);
reply.readExceptionCode();
status_t result = reply.readInt32();
CameraMetadata out;
if (reply.readInt32() != 0) {
out.readFromParcel(&reply);
}
if (info != NULL) {
info->swap(out);
}
return result;
}
virtual status_t waitUntilIdle()
{
ALOGV("waitUntilIdle");
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
remote()->transact(WAIT_UNTIL_IDLE, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
virtual status_t flush()
{
ALOGV("flush");
Parcel data, reply;
data.writeInterfaceToken(ICameraDeviceUser::getInterfaceDescriptor());
remote()->transact(FLUSH, data, &reply);
reply.readExceptionCode();
return reply.readInt32();
}
private:
};
IMPLEMENT_META_INTERFACE(CameraDeviceUser,
"android.hardware.camera2.ICameraDeviceUser");
// ----------------------------------------------------------------------
status_t BnCameraDeviceUser::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case DISCONNECT: {
ALOGV("DISCONNECT");
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
disconnect();
reply->writeNoException();
return NO_ERROR;
} break;
case SUBMIT_REQUEST: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
// arg0 = request
sp<CaptureRequest> request;
if (data.readInt32() != 0) {
request = new CaptureRequest();
request->readFromParcel(const_cast<Parcel*>(&data));
}
// arg1 = streaming (bool)
bool streaming = data.readInt32();
// return code: requestId (int32)
reply->writeNoException();
reply->writeInt32(submitRequest(request, streaming));
return NO_ERROR;
} break;
case CANCEL_REQUEST: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
int requestId = data.readInt32();
reply->writeNoException();
reply->writeInt32(cancelRequest(requestId));
return NO_ERROR;
} break;
case DELETE_STREAM: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
int streamId = data.readInt32();
reply->writeNoException();
reply->writeInt32(deleteStream(streamId));
return NO_ERROR;
} break;
case CREATE_STREAM: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
int width, height, format;
width = data.readInt32();
ALOGV("%s: CREATE_STREAM: width = %d", __FUNCTION__, width);
height = data.readInt32();
ALOGV("%s: CREATE_STREAM: height = %d", __FUNCTION__, height);
format = data.readInt32();
ALOGV("%s: CREATE_STREAM: format = %d", __FUNCTION__, format);
sp<IGraphicBufferProducer> bp;
if (data.readInt32() != 0) {
String16 name = readMaybeEmptyString16(data);
bp = interface_cast<IGraphicBufferProducer>(
data.readStrongBinder());
ALOGV("%s: CREATE_STREAM: bp = %p, name = %s", __FUNCTION__,
bp.get(), String8(name).string());
} else {
ALOGV("%s: CREATE_STREAM: bp = unset, name = unset",
__FUNCTION__);
}
status_t ret;
ret = createStream(width, height, format, bp);
reply->writeNoException();
ALOGV("%s: CREATE_STREAM: write noException", __FUNCTION__);
reply->writeInt32(ret);
ALOGV("%s: CREATE_STREAM: write ret = %d", __FUNCTION__, ret);
return NO_ERROR;
} break;
case CREATE_DEFAULT_REQUEST: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
int templateId = data.readInt32();
CameraMetadata request;
status_t ret;
ret = createDefaultRequest(templateId, &request);
reply->writeNoException();
reply->writeInt32(ret);
// out-variables are after exception and return value
reply->writeInt32(1); // to mark presence of metadata object
request.writeToParcel(const_cast<Parcel*>(reply));
return NO_ERROR;
} break;
case GET_CAMERA_INFO: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
CameraMetadata info;
status_t ret;
ret = getCameraInfo(&info);
reply->writeNoException();
reply->writeInt32(ret);
// out-variables are after exception and return value
reply->writeInt32(1); // to mark presence of metadata object
info.writeToParcel(reply);
return NO_ERROR;
} break;
case WAIT_UNTIL_IDLE: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
reply->writeNoException();
reply->writeInt32(waitUntilIdle());
return NO_ERROR;
} break;
case FLUSH: {
CHECK_INTERFACE(ICameraDeviceUser, data, reply);
reply->writeNoException();
reply->writeInt32(flush());
return NO_ERROR;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
}; // namespace android