// RegisterCodec.h

#ifndef __REGISTER_CODEC_H
#define __REGISTER_CODEC_H

#include "../Common/MethodId.h"

#include "../ICoder.h"

typedef void * (*CreateCodecP)();

struct CCodecInfo
{
  CreateCodecP CreateDecoder;
  CreateCodecP CreateEncoder;
  CMethodId Id;
  const char *Name;
  UInt32 NumStreams;
  bool IsFilter;
};

void RegisterCodec(const CCodecInfo *codecInfo) throw();


#define REGISTER_CODEC_CREATE_2(name, cls, i) static void *name() { return (void *)(i *)(new cls); }
#define REGISTER_CODEC_CREATE(name, cls) REGISTER_CODEC_CREATE_2(name, cls, ICompressCoder)

#define REGISTER_CODEC_NAME(x) CRegisterCodec ## x
#define REGISTER_CODEC_VAR static const CCodecInfo g_CodecInfo =

#define REGISTER_CODEC(x) struct REGISTER_CODEC_NAME(x) { \
    REGISTER_CODEC_NAME(x)() { RegisterCodec(&g_CodecInfo); }}; \
    static REGISTER_CODEC_NAME(x) g_RegisterCodec;


#define REGISTER_CODECS_NAME(x) CRegisterCodecs ## x
#define REGISTER_CODECS_VAR static const CCodecInfo g_CodecsInfo[] =

#define REGISTER_CODECS(x) struct REGISTER_CODECS_NAME(x) { \
    REGISTER_CODECS_NAME(x)() { for (unsigned i = 0; i < ARRAY_SIZE(g_CodecsInfo); i++) \
    RegisterCodec(&g_CodecsInfo[i]); }}; \
    static REGISTER_CODECS_NAME(x) g_RegisterCodecs;

#define REGISTER_CODEC_2(x, crDec, crEnc, id, name) \
    REGISTER_CODEC_VAR \
    { crDec, crEnc, id, name, 1, false }; \
    REGISTER_CODEC(x)

#define REGISTER_CODEC_E(x, clsDec, clsEnc, id, name) \
    REGISTER_CODEC_CREATE(CreateDec, clsDec) \
    REGISTER_CODEC_CREATE(CreateEnc, clsEnc) \
    REGISTER_CODEC_2(x, CreateDec, CreateEnc, id, name)

#define REGISTER_FILTER_CREATE(name, cls) REGISTER_CODEC_CREATE_2(name, cls, ICompressFilter)

#define REGISTER_FILTER_ITEM(crDec, crEnc, id, name) \
    { crDec, crEnc, id, name, 1, true }

#define REGISTER_FILTER(x, crDec, crEnc, id, name) \
    REGISTER_CODEC_VAR \
    REGISTER_FILTER_ITEM(crDec, crEnc, id, name); \
    REGISTER_CODEC(x)

#define REGISTER_FILTER_E(x, clsDec, clsEnc, id, name) \
    REGISTER_FILTER_CREATE(CreateDec, clsDec) \
    REGISTER_FILTER_CREATE(CreateEnc, clsEnc) \
    REGISTER_FILTER(x, CreateDec, CreateEnc, id, name)

struct CHasherInfo
{
  IHasher * (*CreateHasher)();
  CMethodId Id;
  const char *Name;
  UInt32 DigestSize;
};

void RegisterHasher(const CHasherInfo *hasher) throw();

#define REGISTER_HASHER_NAME(x) CRegHasher_ ## x

#define REGISTER_HASHER(cls, id, name, size) \
    STDMETHODIMP_(UInt32) cls::GetDigestSize() throw() { return size; } \
    static IHasher *CreateHasherSpec() { return new cls(); } \
    static const CHasherInfo g_HasherInfo = { CreateHasherSpec, id, name, size }; \
    struct REGISTER_HASHER_NAME(cls) { REGISTER_HASHER_NAME(cls)() { RegisterHasher(&g_HasherInfo); }}; \
    static REGISTER_HASHER_NAME(cls) g_RegisterHasher;

#endif
