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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_HDRPLUS_CAPTURE_SESSION_H_
#define HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_HDRPLUS_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_dispatcher.h"
#include "result_processor.h"
#include "vendor_tag_types.h"
namespace android {
namespace google_camera_hal {
// HdrplusCaptureSession implements a CaptureSession that contains two
// process chains (realtime and HDR+)
//
// 1. RealtimeZslRequestProcessor -> RealtimeProcessBlock ->
// RealtimeZslResultRequestProcessor
// 2. HdrplusRequestProcessor -> HdrplusProcessBlock -> HdrplusResultProcessor
//
// It only supports a single physical camera device session.
class HdrplusCaptureSession : 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 HdrplusCaptureSession.
//
// device_session_hwl is owned by the caller and must be valid during the
// lifetime of HdrplusCaptureSession.
// 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 HdrplusCaptureSession
static std::unique_ptr<HdrplusCaptureSession> 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 ~HdrplusCaptureSession();
// Override functions in CaptureSession start.
status_t ProcessRequest(const CaptureRequest& request) override;
status_t Flush() override;
// Override functions in CaptureSession end.
protected:
HdrplusCaptureSession() = default;
private:
static const uint32_t kRawBufferCount = 16;
static const uint32_t kRawMinBufferCount = 12;
static constexpr uint32_t kPartialResult = 1;
static const android_pixel_format_t kHdrplusRawFormat = HAL_PIXEL_FORMAT_RAW10;
status_t Initialize(CameraDeviceSessionHwl* device_session_hwl,
const StreamConfiguration& stream_config,
ProcessCaptureResultFunc process_capture_result,
NotifyFunc notify,
std::vector<HalStream>* hal_configured_streams);
// Setup realtime process chain
status_t SetupRealtimeProcessChain(
const StreamConfiguration& stream_config,
ProcessCaptureResultFunc process_capture_result, NotifyFunc notify,
std::unique_ptr<ProcessBlock>* realtime_process_block,
std::unique_ptr<ResultProcessor>* realtime_result_processor,
int32_t* raw_stream_id);
// Setup hdrplus process chain
status_t SetupHdrplusProcessChain(
const StreamConfiguration& stream_config,
ProcessCaptureResultFunc process_capture_result, NotifyFunc notify,
std::unique_ptr<ProcessBlock>* hdrplus_process_block,
std::unique_ptr<ResultProcessor>* hdrplus_result_processor,
int32_t raw_stream_id);
// Configure streams for request processor and process block.
status_t ConfigureStreams(const StreamConfiguration& stream_config,
RequestProcessor* request_processor,
ProcessBlock* process_block, int32_t* raw_stream_id);
// Configure hdrplus streams for request processor and process block.
status_t ConfigureHdrplusStreams(const StreamConfiguration& stream_config,
RequestProcessor* hdrplus_request_processor,
ProcessBlock* hdrplus_process_block);
// Build pipelines and return HAL configured streams.
// Allocate internal raw buffer
status_t BuildPipelines(ProcessBlock* process_block,
ProcessBlock* hdrplus_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);
// Purge the hal_configured_streams such that only framework streams are left
status_t PurgeHalConfiguredStream(
const StreamConfiguration& stream_config,
std::vector<HalStream>* hal_configured_streams);
// Invoked when receiving a result from result processor.
void ProcessCaptureResult(std::unique_ptr<CaptureResult> result);
// Invoked when reciving a message from result processor.
void NotifyHalMessage(const NotifyMessage& message);
std::unique_ptr<RequestProcessor> request_processor_;
std::unique_ptr<RequestProcessor> hdrplus_request_processor_;
// device_session_hwl_ is owned by the client.
CameraDeviceSessionHwl* device_session_hwl_ = nullptr;
std::unique_ptr<InternalStreamManager> internal_stream_manager_;
std::unique_ptr<ResultDispatcher> result_dispatcher_;
std::mutex callback_lock_;
// The following callbacks must be protected by callback_lock_.
ProcessCaptureResultFunc process_capture_result_;
NotifyFunc notify_;
// For error notify to framework directly
NotifyFunc device_session_notify_;
// Use this stream id to check the request is HDR+ compatible
int32_t hal_preview_stream_id_ = -1;
HdrMode hdr_mode_ = HdrMode::kHdrplusMode;
};
} // namespace google_camera_hal
} // namespace android
#endif // HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_HDRPLUS_CAPTURE_SESSION_H_
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