zircon/system/dev/camera/arm-isp/stats-mgr.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "modules/sensor.h"
#include <atomic>
#include <fbl/unique_ptr.h>
#include <lib/mmio/mmio.h>
#include <lib/sync/completion.h>
#include <threads.h>

namespace camera {

// Takes the place of the fsm_mgr.
// Processes an event queue, and maintains ownership of all the modules.
// This class will be broken out into multiple classes based on utility, but
// this will serve as the initial step in porting functionality from the fsm
// architecture.
// Collects statistics from all the modules.
class StatsManager {
public:
    DISALLOW_COPY_AND_ASSIGN_ALLOW_MOVE(StatsManager);
    StatsManager(fbl::unique_ptr<camera::Sensor> sensor,
                 sync_completion_t frame_processing_signal)
        : sensor_(std::move(sensor)),
          frame_processing_signal_(frame_processing_signal) {}

    static fbl::unique_ptr<StatsManager> Create(ddk::MmioView isp_mmio,
                                                ddk::MmioView isp_mmio_local,
                                                ddk::CameraSensorProtocolClient camera_sensor,
                                                sync_completion_t frame_processing_signal);
    ~StatsManager();

    void SensorStartStreaming() { sensor_->StartStreaming(); }
    void SensorStopStreaming() { sensor_->StopStreaming(); }

private:
    int FrameProcessingThread();

    fbl::unique_ptr<camera::Sensor> sensor_;
    sync_completion_t frame_processing_signal_;
    thrd_t frame_processing_thread_;
    std::atomic<bool> running_;
};

} // namespace camera