//===============================================================================
// Copyright (c) 2014-2016  Advanced Micro Devices, Inc. All rights reserved.
//===============================================================================
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files(the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions :
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
//  File Name:   Codec_BC7.cpp
//  Description: implementation of the CCodec_BC7 class
//
//////////////////////////////////////////////////////////////////////////////

#ifndef _CODEC_BC7_H_INCLUDED_
#define _CODEC_BC7_H_INCLUDED_

#include "compressonator.h"
#include "codec_dxtc.h"
#include "bc7_encode.h"
#include "bc7_decode.h"
#include "bc7_library.h"
#include <thread>

// #define USE_THREADED_CALLBACKS  // This is experimental code to improve compression performance!
#ifdef USE_THREADED_CALLBACKS
typedef struct {
    float progress;
    bool  abort;
} CMP_PROGRESS_THREAD;
#endif


struct BC7EncodeThreadParam {
    BC7BlockEncoder    *encoder;
    double    in[MAX_SUBSET_SIZE][MAX_DIMENSION_BIG];
    CMP_BYTE    *out;
    volatile CMP_BOOL    run;
    volatile CMP_BOOL    exit;
};

class CCodec_BC7 : public CCodec_DXTC {
  public:
    CCodec_BC7();
    ~CCodec_BC7();

    virtual bool SetParameter(const CMP_CHAR* pszParamName, CMP_CHAR* sValue);
    virtual bool SetParameter(const CMP_CHAR* /*pszParamName*/, CMP_DWORD /*dwValue*/);
    virtual bool SetParameter(const CMP_CHAR* /*pszParamName*/, CODECFLOAT /*fValue*/);

    // Required interfaces
    virtual CodecError Compress             (CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
    virtual CodecError Compress_Fast        (CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
    virtual CodecError Compress_SuperFast   (CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);
    virtual CodecError Decompress           (CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc = NULL, CMP_DWORD_PTR pUser1 = NULL, CMP_DWORD_PTR pUser2 = NULL);


  private:
    BC7EncodeThreadParam *m_EncodeParameterStorage;

    // BC7 User configurable variables
    CMP_DWORD   m_ModeMask;
    double  m_Quality;
    double  m_Performance;
    CMP_BOOL    m_ColourRestrict;
    CMP_BOOL    m_AlphaRestrict;
    CMP_WORD    m_NumThreads;
    CMP_BOOL    m_ImageNeedsAlpha;


    // BC7 Internal status
    CMP_BOOL     m_LibraryInitialized;
    CMP_BOOL     m_Use_MultiThreading;
    CMP_INT      m_NumEncodingThreads;
    CMP_WORD     m_LiveThreads;
    CMP_WORD     m_LastThread;

    // BC7 Encoders and decoders: for encding use the interfaces below
    std::thread*        m_EncodingThreadHandle;
    BC7BlockEncoder*    m_encoder[MAX_BC7_THREADS];
    BC7BlockDecoder*    m_decoder;

    // Encoder interfaces
    CodecError    InitializeBC7Library();
    CodecError    EncodeBC7Block(double  in[BC7_BLOCK_PIXELS][MAX_DIMENSION_BIG],CMP_BYTE *out);
    CodecError    FinishBC7Encoding(void);

    static void Run();

#ifdef USE_THREADED_CALLBACKS
  public:
    static CMP_PROGRESS_THREAD  m_progress;
    static Codec_Feedback_Proc  m_user_pFeedbackProc;
    static CMP_DWORD_PTR        m_pUser1;
    static CMP_DWORD_PTR        m_pUser2;
#endif
};

#endif // !defined(_CODEC_DXT5_H_INCLUDED_)