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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 "ICameraClient"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <camera/CameraUtils.h>
#include <android/hardware/ICameraClient.h>
#include <media/hardware/HardwareAPI.h>
namespace android {
namespace hardware {
enum {
NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
DATA_CALLBACK,
DATA_CALLBACK_TIMESTAMP,
RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP,
RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH,
};
class BpCameraClient: public BpInterface<ICameraClient>
{
public:
explicit BpCameraClient(const sp<IBinder>& impl)
: BpInterface<ICameraClient>(impl)
{
}
// generic callback from camera service to app
void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
{
ALOGV("notifyCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt32(msgType);
data.writeInt32(ext1);
data.writeInt32(ext2);
remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// generic data callback from camera service to app with image data
void dataCallback(int32_t msgType, const sp<IMemory>& imageData,
camera_frame_metadata_t *metadata)
{
ALOGV("dataCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt32(msgType);
data.writeStrongBinder(IInterface::asBinder(imageData));
if (metadata) {
data.writeInt32(metadata->number_of_faces);
data.write(metadata->faces, sizeof(camera_face_t) * metadata->number_of_faces);
}
remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
// generic data callback from camera service to app with image data
void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& imageData)
{
ALOGV("dataCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt64(timestamp);
data.writeInt32(msgType);
data.writeStrongBinder(IInterface::asBinder(imageData));
remote()->transact(DATA_CALLBACK_TIMESTAMP, data, &reply, IBinder::FLAG_ONEWAY);
}
void recordingFrameHandleCallbackTimestamp(nsecs_t timestamp, native_handle_t* handle) {
ALOGV("recordingFrameHandleCallbackTimestamp");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
data.writeInt64(timestamp);
data.writeNativeHandle(handle);
remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP, data, &reply,
IBinder::FLAG_ONEWAY);
}
void recordingFrameHandleCallbackTimestampBatch(
const std::vector<nsecs_t>& timestamps,
const std::vector<native_handle_t*>& handles) {
ALOGV("recordingFrameHandleCallbackTimestampBatch");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
uint32_t n = timestamps.size();
if (n != handles.size()) {
ALOGE("%s: size of timestamps(%zu) and handles(%zu) mismatch!",
__FUNCTION__, timestamps.size(), handles.size());
return;
}
data.writeUint32(n);
for (auto ts : timestamps) {
data.writeInt64(ts);
}
for (auto& handle : handles) {
data.writeNativeHandle(handle);
}
remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH, data, &reply,
IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
// ----------------------------------------------------------------------
status_t BnCameraClient::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case NOTIFY_CALLBACK: {
ALOGV("NOTIFY_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
int32_t msgType = data.readInt32();
int32_t ext1 = data.readInt32();
int32_t ext2 = data.readInt32();
notifyCallback(msgType, ext1, ext2);
return NO_ERROR;
} break;
case DATA_CALLBACK: {
ALOGV("DATA_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
int32_t msgType = data.readInt32();
sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
camera_frame_metadata_t metadata;
if (data.dataAvail() > 0) {
metadata.number_of_faces = data.readInt32();
// Zero faces is a valid case, to notify clients that no faces are now visible
if (metadata.number_of_faces < 0 ||
metadata.number_of_faces > (int32_t)(INT32_MAX / sizeof(camera_face_t))) {
ALOGE("%s: Too large face count: %d", __FUNCTION__, metadata.number_of_faces);
return BAD_VALUE;
}
metadata.faces = (camera_face_t *) data.readInplace(
sizeof(camera_face_t) * metadata.number_of_faces);
}
dataCallback(msgType, imageData, &metadata);
return NO_ERROR;
} break;
case DATA_CALLBACK_TIMESTAMP: {
ALOGV("DATA_CALLBACK_TIMESTAMP");
CHECK_INTERFACE(ICameraClient, data, reply);
nsecs_t timestamp = data.readInt64();
int32_t msgType = data.readInt32();
sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
dataCallbackTimestamp(timestamp, msgType, imageData);
return NO_ERROR;
} break;
case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP: {
ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP");
CHECK_INTERFACE(ICameraClient, data, reply);
nsecs_t timestamp;
status_t res = data.readInt64(×tamp);
if (res != OK) {
ALOGE("%s: Failed to read timestamp: %s (%d)", __FUNCTION__, strerror(-res), res);
return BAD_VALUE;
}
native_handle_t* handle = data.readNativeHandle();
if (handle == nullptr) {
ALOGE("%s: Received a null native handle", __FUNCTION__);
return BAD_VALUE;
}
// The native handle will be freed in BpCamera::releaseRecordingFrameHandle.
recordingFrameHandleCallbackTimestamp(timestamp, handle);
return NO_ERROR;
} break;
case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH: {
ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH");
CHECK_INTERFACE(ICameraClient, data, reply);
uint32_t n = 0;
status_t res = data.readUint32(&n);
if (res != OK) {
ALOGE("%s: Failed to read batch size: %s (%d)", __FUNCTION__, strerror(-res), res);
return BAD_VALUE;
}
std::vector<nsecs_t> timestamps;
std::vector<native_handle_t*> handles;
timestamps.reserve(n);
handles.reserve(n);
for (uint32_t i = 0; i < n; i++) {
nsecs_t t;
res = data.readInt64(&t);
if (res != OK) {
ALOGE("%s: Failed to read timestamp[%d]: %s (%d)",
__FUNCTION__, i, strerror(-res), res);
return BAD_VALUE;
}
timestamps.push_back(t);
}
for (uint32_t i = 0; i < n; i++) {
native_handle_t* handle = data.readNativeHandle();
if (handle == nullptr) {
ALOGE("%s: Received a null native handle at handles[%d]",
__FUNCTION__, i);
return BAD_VALUE;
}
handles.push_back(handle);
}
// The native handle will be freed in BpCamera::releaseRecordingFrameHandleBatch.
recordingFrameHandleCallbackTimestampBatch(timestamps, handles);
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
} // namespace hardware
} // namespace android
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