blob: 0c94bd482ea3b19dc85d1e41c84fd5b3fd3933b1 [file] [log] [blame]
/*
**
** 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 "IProCameraUser"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <camera/IProCameraUser.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/Surface.h>
#include <system/camera_metadata.h>
namespace android {
typedef Parcel::WritableBlob WritableBlob;
typedef Parcel::ReadableBlob ReadableBlob;
enum {
DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
CONNECT,
EXCLUSIVE_TRY_LOCK,
EXCLUSIVE_LOCK,
EXCLUSIVE_UNLOCK,
HAS_EXCLUSIVE_LOCK,
SUBMIT_REQUEST,
CANCEL_REQUEST,
DELETE_STREAM,
CREATE_STREAM,
CREATE_DEFAULT_REQUEST,
GET_CAMERA_INFO,
};
/**
* Caller becomes the owner of the new metadata
* 'const Parcel' doesnt prevent us from calling the read functions.
* which is interesting since it changes the internal state
*/
void readMetadata(const Parcel& data, camera_metadata_t** out) {
camera_metadata_t* metadata;
// arg0 = metadataSize (int32)
size_t metadataSize = static_cast<size_t>(data.readInt32());
if (metadataSize == 0) {
if (out) {
*out = NULL;
}
return;
}
// NOTE: this doesn't make sense to me. shouldnt the blob
// know how big it is? why do we have to specify the size
// to Parcel::readBlob ?
ReadableBlob blob;
// arg1 = metadata (blob)
{
data.readBlob(metadataSize, &blob);
const camera_metadata_t* tmp =
reinterpret_cast<const camera_metadata_t*>(blob.data());
size_t entry_capacity = get_camera_metadata_entry_capacity(tmp);
size_t data_capacity = get_camera_metadata_data_capacity(tmp);
metadata = allocate_camera_metadata(entry_capacity, data_capacity);
copy_camera_metadata(metadata, metadataSize, tmp);
}
blob.release();
if (out) {
*out = metadata;
} else {
free_camera_metadata(metadata);
}
}
/**
* Caller retains ownership of metadata
* - Write 2 (int32 + blob) args in the current position
*/
void writeMetadata(Parcel& data, camera_metadata_t* metadata) {
// arg0 = metadataSize (int32)
size_t metadataSize;
if (metadata == NULL) {
data.writeInt32(0);
return;
}
metadataSize = get_camera_metadata_compact_size(metadata);
data.writeInt32(static_cast<int32_t>(metadataSize));
// arg1 = metadata (blob)
WritableBlob blob;
{
data.writeBlob(metadataSize, &blob);
copy_camera_metadata(blob.data(), metadataSize, metadata);
}
blob.release();
}
class BpProCameraUser: public BpInterface<IProCameraUser>
{
public:
BpProCameraUser(const sp<IBinder>& impl)
: BpInterface<IProCameraUser>(impl)
{
}
// disconnect from camera service
void disconnect()
{
ALOGV("disconnect");
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
remote()->transact(DISCONNECT, data, &reply);
}
virtual status_t connect(const sp<IProCameraCallbacks>& cameraClient)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeStrongBinder(cameraClient->asBinder());
remote()->transact(CONNECT, data, &reply);
return reply.readInt32();
}
/* Shared ProCameraUser */
virtual status_t exclusiveTryLock()
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
remote()->transact(EXCLUSIVE_TRY_LOCK, data, &reply);
return reply.readInt32();
}
virtual status_t exclusiveLock()
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
remote()->transact(EXCLUSIVE_LOCK, data, &reply);
return reply.readInt32();
}
virtual status_t exclusiveUnlock()
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
remote()->transact(EXCLUSIVE_UNLOCK, data, &reply);
return reply.readInt32();
}
virtual bool hasExclusiveLock()
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
remote()->transact(HAS_EXCLUSIVE_LOCK, data, &reply);
return !!reply.readInt32();
}
virtual int submitRequest(camera_metadata_t* metadata, bool streaming)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
// arg0+arg1
writeMetadata(data, metadata);
// arg2 = streaming (bool)
data.writeInt32(streaming);
remote()->transact(SUBMIT_REQUEST, data, &reply);
return reply.readInt32();
}
virtual status_t cancelRequest(int requestId)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeInt32(requestId);
remote()->transact(CANCEL_REQUEST, data, &reply);
return reply.readInt32();
}
virtual status_t deleteStream(int streamId)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeInt32(streamId);
remote()->transact(DELETE_STREAM, data, &reply);
return reply.readInt32();
}
virtual status_t createStream(int width, int height, int format,
const sp<IGraphicBufferProducer>& bufferProducer,
/*out*/
int* streamId)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeInt32(width);
data.writeInt32(height);
data.writeInt32(format);
sp<IBinder> b(bufferProducer->asBinder());
data.writeStrongBinder(b);
remote()->transact(CREATE_STREAM, data, &reply);
int sId = reply.readInt32();
if (streamId) {
*streamId = sId;
}
return reply.readInt32();
}
// Create a request object from a template.
virtual status_t createDefaultRequest(int templateId,
/*out*/
camera_metadata** request)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeInt32(templateId);
remote()->transact(CREATE_DEFAULT_REQUEST, data, &reply);
readMetadata(reply, /*out*/request);
return reply.readInt32();
}
virtual status_t getCameraInfo(int cameraId, camera_metadata** info)
{
Parcel data, reply;
data.writeInterfaceToken(IProCameraUser::getInterfaceDescriptor());
data.writeInt32(cameraId);
remote()->transact(GET_CAMERA_INFO, data, &reply);
readMetadata(reply, /*out*/info);
return reply.readInt32();
}
private:
};
IMPLEMENT_META_INTERFACE(ProCameraUser, "android.hardware.IProCameraUser");
// ----------------------------------------------------------------------
status_t BnProCameraUser::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case DISCONNECT: {
ALOGV("DISCONNECT");
CHECK_INTERFACE(IProCameraUser, data, reply);
disconnect();
return NO_ERROR;
} break;
case CONNECT: {
CHECK_INTERFACE(IProCameraUser, data, reply);
sp<IProCameraCallbacks> cameraClient =
interface_cast<IProCameraCallbacks>(data.readStrongBinder());
reply->writeInt32(connect(cameraClient));
return NO_ERROR;
} break;
/* Shared ProCameraUser */
case EXCLUSIVE_TRY_LOCK: {
CHECK_INTERFACE(IProCameraUser, data, reply);
reply->writeInt32(exclusiveTryLock());
return NO_ERROR;
} break;
case EXCLUSIVE_LOCK: {
CHECK_INTERFACE(IProCameraUser, data, reply);
reply->writeInt32(exclusiveLock());
return NO_ERROR;
} break;
case EXCLUSIVE_UNLOCK: {
CHECK_INTERFACE(IProCameraUser, data, reply);
reply->writeInt32(exclusiveUnlock());
return NO_ERROR;
} break;
case HAS_EXCLUSIVE_LOCK: {
CHECK_INTERFACE(IProCameraUser, data, reply);
reply->writeInt32(hasExclusiveLock());
return NO_ERROR;
} break;
case SUBMIT_REQUEST: {
CHECK_INTERFACE(IProCameraUser, data, reply);
camera_metadata_t* metadata;
readMetadata(data, /*out*/&metadata);
// arg2 = streaming (bool)
bool streaming = data.readInt32();
// return code: requestId (int32)
reply->writeInt32(submitRequest(metadata, streaming));
return NO_ERROR;
} break;
case CANCEL_REQUEST: {
CHECK_INTERFACE(IProCameraUser, data, reply);
int requestId = data.readInt32();
reply->writeInt32(cancelRequest(requestId));
return NO_ERROR;
} break;
case DELETE_STREAM: {
CHECK_INTERFACE(IProCameraUser, data, reply);
int streamId = data.readInt32();
reply->writeInt32(deleteStream(streamId));
return NO_ERROR;
} break;
case CREATE_STREAM: {
CHECK_INTERFACE(IProCameraUser, data, reply);
int width, height, format;
width = data.readInt32();
height = data.readInt32();
format = data.readInt32();
sp<IGraphicBufferProducer> bp =
interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
int streamId = -1;
status_t ret;
ret = createStream(width, height, format, bp, &streamId);
reply->writeInt32(streamId);
reply->writeInt32(ret);
return NO_ERROR;
} break;
case CREATE_DEFAULT_REQUEST: {
CHECK_INTERFACE(IProCameraUser, data, reply);
int templateId = data.readInt32();
camera_metadata_t* request = NULL;
status_t ret;
ret = createDefaultRequest(templateId, &request);
writeMetadata(*reply, request);
reply->writeInt32(ret);
free_camera_metadata(request);
return NO_ERROR;
} break;
case GET_CAMERA_INFO: {
CHECK_INTERFACE(IProCameraUser, data, reply);
int cameraId = data.readInt32();
camera_metadata_t* info = NULL;
status_t ret;
ret = getCameraInfo(cameraId, &info);
writeMetadata(*reply, info);
reply->writeInt32(ret);
free_camera_metadata(info);
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
}; // namespace android