DecklinkInput.h

Go to the documentation of this file.

/**
 * @file
 * @brief Header file for DecklinkInput class
 * @author Jonathan Thomas <jonathan@openshot.org>, Blackmagic Design
 *
 * @ref License
 */

// Copyright (c) 2008-2019 OpenShot Studios, LLC
// Copyright (c) 2009 Blackmagic Design
//
// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-License-Identifier: MIT

#ifndef OPENSHOT_DECKLINK_INPUT_H
#define OPENSHOT_DECKLINK_INPUT_H

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <fcntl.h>

#include "DeckLinkAPI.h"
#include "Frame.h"
#include "CacheMemory.h"
#include "OpenMPUtilities.h"

/// Implementation of the Blackmagic Decklink API (used by the DecklinkReader)
class DeckLinkInputDelegate : public IDeckLinkInputCallback
{
public:
        pthread_cond_t*                 sleepCond;
        BMDTimecodeFormat               g_timecodeFormat;
        unsigned long                   frameCount;
        unsigned long                   final_frameCount;

        // Queue of raw video frames
        std::deque<IDeckLinkMutableVideoFrame*> raw_video_frames;
        openshot::CacheMemory final_frames;

        // Convert between YUV and RGB
        IDeckLinkOutput *deckLinkOutput;
        IDeckLinkVideoConversion *deckLinkConverter;

        DeckLinkInputDelegate(pthread_cond_t* m_sleepCond, IDeckLinkOutput* deckLinkOutput, IDeckLinkVideoConversion* deckLinkConverter);
        ~DeckLinkInputDelegate();

        virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
        virtual ULONG STDMETHODCALLTYPE AddRef(void);
        virtual ULONG STDMETHODCALLTYPE  Release(void);
        virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags);
        virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame*, IDeckLinkAudioInputPacket*);

        // Extra methods
        std::shared_ptr<openshot::Frame> GetFrame(int64_t requested_frame);
        unsigned long GetCurrentFrameNumber();

private:
        ULONG                           m_refCount;
        pthread_mutex_t         m_mutex;
};

#endif