AudioDefs.h

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#pragma once
 
namespace RE
{
#pragma pack(push, 1)
 
    struct tWAVEFORMATEX
    {
        std::uint16_t wFormatTag;       // 00 - Integer identifier of the format
        std::uint16_t nChannels;        // 02 - Number of audio channels
        std::uint32_t nSamplesPerSec;   // 04 - Audio sample rate
        std::uint32_t nAvgBytesPerSec;  // 08 - Bytes per second (possibly approximate)
        std::uint16_t nBlockAlign;      // 0C - Size in bytes of a sample block (all channels)
        std::uint16_t wBitsPerSample;   // 0E - Size in bits of a single per-channel sample
        std::uint16_t cbSize;           // 10 - Bytes of extra data appended to this struct
    };
    static_assert(sizeof(tWAVEFORMATEX) == 0x12);
    using WAVEFORMATEX = tWAVEFORMATEX;
 
    struct WAVEFORMATEXTENSIBLE
    {
        WAVEFORMATEX Format;  // 00 - Base WAVEFORMATEX data
        union                 // 12
        {
            std::uint16_t wValidBitsPerSample;  // Valid bits in each sample container
            std::uint16_t wSamplesPerBlock;     // Samples per block of audio data; valid if wBitsPerSample=0 (but rarely used).
            std::uint16_t wReserved;            // Zero if neither case above applies.
        } Samples;
        std::uint32_t dwChannelMask;  // 14 - Positions of the audio channels
        WinAPI::GUID  SubFormat;      // 18 - Format identifier GUID
    };
 
#pragma pack(pop)
}