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/*
* Copyright (C) 2019 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.
*/
#ifndef HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_BASIC_CAPTURE_SESSION_H_
#define HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_BASIC_CAPTURE_SESSION_H_
#include "camera_buffer_allocator_hwl.h"
#include "camera_device_session_hwl.h"
#include "capture_session.h"
#include "hwl_types.h"
#include "request_processor.h"
#include "result_processor.h"
namespace android {
namespace google_camera_hal {
// BasicCaptureSession implements a CaptureSession that contains a single
// process chain that consists of
//
// BasicRequestProcessor -> RealtimeProcessBlock -> BasicResultProcessor
//
// It only supports a single physical camera device session.
class BasicCaptureSession : public CaptureSession {
public:
// Return if the device session HWL and stream configuration are supported.
static bool IsStreamConfigurationSupported(
CameraDeviceSessionHwl* device_session_hwl,
const StreamConfiguration& stream_config);
// Create a BasicCaptureSession.
//
// device_session_hwl is owned by the caller and must be valid during the
// lifetime of BasicCaptureSession.
// stream_config is the stream configuration.
// process_capture_result is the callback function to notify results.
// process_batch_capture_result is the callback function to notify batched
// results.
// notify is the callback function to notify messages.
// hal_configured_streams will be filled with HAL configured streams.
// camera_allocator_hwl is owned by the caller and must be valid during the
// lifetime of BasicCaptureSession
static std::unique_ptr<CaptureSession> Create(
CameraDeviceSessionHwl* device_session_hwl,
const StreamConfiguration& stream_config,
ProcessCaptureResultFunc process_capture_result,
ProcessBatchCaptureResultFunc process_batch_capture_result,
NotifyFunc notify, HwlSessionCallback session_callback,
std::vector<HalStream>* hal_configured_streams,
CameraBufferAllocatorHwl* camera_allocator_hwl = nullptr);
virtual ~BasicCaptureSession();
// Override functions in CaptureSession start.
status_t ProcessRequest(const CaptureRequest& request) override;
status_t Flush() override;
// Override functions in CaptureSession end.
protected:
BasicCaptureSession() = default;
private:
status_t Initialize(CameraDeviceSessionHwl* device_session_hwl,
const StreamConfiguration& stream_config,
ProcessCaptureResultFunc process_capture_result,
ProcessBatchCaptureResultFunc process_batch_capture_result,
NotifyFunc notify,
std::vector<HalStream>* hal_configured_streams);
// Configure streams for request processor and process block.
status_t ConfigureStreams(const StreamConfiguration& stream_config,
RequestProcessor* request_processor,
ProcessBlock* process_block);
// Build pipelines and return HAL configured streams.
status_t BuildPipelines(ProcessBlock* process_block,
std::vector<HalStream>* hal_configured_streams);
// Connect the process chain.
status_t ConnectProcessChain(RequestProcessor* request_processor,
std::unique_ptr<ProcessBlock> process_block,
std::unique_ptr<ResultProcessor> result_processor);
std::unique_ptr<RequestProcessor> request_processor_;
// device_session_hwl_ is owned by the client.
CameraDeviceSessionHwl* device_session_hwl_ = nullptr;
std::unique_ptr<InternalStreamManager> internal_stream_manager_;
};
} // namespace google_camera_hal
} // namespace android
#endif // HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_BASIC_CAPTURE_SESSION_H_
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