compress.h

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/*=============================================================================

  libvideo: a library for SDI video processing.

  Copyright (c) University College London (UCL). All rights reserved.

  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.

  See LICENSE.txt in the top level directory for details.

=============================================================================*/

#pragma once
#ifndef LIBVIDEO_COMPRESS_H_51C60B61F0E2444388408FB2BD1F737A
#define LIBVIDEO_COMPRESS_H_51C60B61F0E2444388408FB2BD1F737A

#include <string>
#include <exception>
#include <video/dllexport.h>


namespace video
{


#pragma warning(push)
#pragma warning(disable: 4275)      // non dll-interface class '...' used as base for dll-interface class '...'

// specifically the compressor engine returned error codes
//  for functions that should not fail during normal operations
class LIBVIDEO_DLL_EXPORTS CompressorFailedException : public std::runtime_error
{
public:
    CompressorFailedException(const std::string& msg, int errorcode);
};

// functionality required to map buffers/textures/etc for compression failed
class LIBVIDEO_DLL_EXPORTS InteropFailedException : public std::runtime_error
{
public:
    InteropFailedException(const std::string& msg, int errorcode);
};

#pragma warning(pop)


// forward-decl for pimpl
class CompressorImpl;


// this matches what the nvidia compressor uses internally
struct FrameType
{
    enum FT
    {
        I = 1,
        P = 2,
        B = 3
    };
};


class LIBVIDEO_DLL_EXPORTS Compressor
{
private:
    CompressorImpl*     pimpl;

public:
    Compressor(int width, int height, int mfps, const std::string& filename);
    ~Compressor();

private:
    // not implemented
    Compressor(const Compressor& copyme);
    Compressor& operator=(const Compressor& assignme);


public:

    void compresstexture(int gltexture);

    void preparetexture(int gltexture);


public:
    bool get_output_info(unsigned int frameno, unsigned __int64* fileoffset, FrameType::FT* frametype);
};


} // namespace

#endif // LIBVIDEO_COMPRESS_H_51C60B61F0E2444388408FB2BD1F737A