Utils.h

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#ifndef IW_DAFF_INTERNAL_UTILS
#define IW_DAFF_INTERNAL_UTILS

#include <DAFFDefs.h>

// STL includes
#include <cmath>
#include <string>
#include <cstring> // required for size_t
#include <stdint.h> // required for int64_t

namespace DAFF
{
    // Define necessary roundf for Microsoft compilers
    #ifdef _MSC_VER 
    #define roundf(x) (x<0?ceil((x)-0.5f):floor((x)+0.5f));
    #endif // _MSC_VER

    // --= Complex number conversion =--

    float cabs(float Re, float Im);
    float carg(float Re, float Im);

    // degrees
    float anglef_proj_0_360_DEG(float alpha);
    float anglef_mindiff_0_360_DEG(float alpha, float beta);
    float anglef_mindiff_abs_0_360_DEG(float alpha, float beta);

    // radiants
    float anglef_proj_0_2PI(float alpha);
    float anglef_mindiff_0_2PI(float alpha, float beta);
    float anglef_mindiff_abs_0_2PI(float alpha, float beta);

    // --= Endianess conversion functions =--
 
    /*
     *  All convert from little endian (used within the DAFF files)
     *  into the systems endianess (little endian -> system endianess)
     *
     */

    extern void (*le2se_2byte)(void* src, size_t count);
    extern void (*le2se_3byte)(void* src, size_t count);
    extern void (*le2se_4byte)(void* src, size_t count);
    extern void (*le2se_8byte)(void* src, size_t count);

    // --= Memory (de)allocation =--

    // Allocate/free memory on with a 16-byte boundary
    void* malloc_aligned16(size_t bytes);
    void free_aligned16(void* ptr);

    // --= Sample type conversion =--

    void stc_sint16_to_float(float* dest, const short* src, size_t count, int input_stride=1, int output_stride=1, float gain=1);
    void stc_sint16_to_float_add(float* dest, const short* src, size_t count, int input_stride=1, int output_stride=1, float gain=1);

    void stc_sint24_to_float(float* dest, const void* src, size_t count, int input_stride=1, int output_stride=1, float gain=1);
    void stc_sint24_to_float_add(float* dest, const void* src, size_t count, int input_stride=1, int output_stride=1, float gain=1);


    // --= File system functions =--

    int64_t getFileSize(const std::string& sFilename);


} // End of namespace "DAFF"

#endif // IW_DAFF_INTERNAL_UTILS