Example of a possible new audio wave file format for practical use with high sample rates and depths that will overwhelm RIFF WAVE due to exceeding maximum file size of 2/4GB

wave64.h

#include <stdint.h>

/*
 * Sample encodings
 */

#define SE_PCM_ULE 0    // Puls-Code-Modulation with     unsigned integers least significant byte fist (little endian)
#define SE_PCM_UBE 1    // Puls-Code-Modulation with     unsigned integers most  significant byte fist (big    endian)
#define SE_PCM_SLE 2    // Puls-Code-Modulation with       signed integers least significant byte fist (little endian)
#define SE_PCM_SBE 3    // Puls-Code-Modulation with       signed integers most  significant byte fist (big    endian)
#define SE_PCM_FLE 4    // Puls-Code-Modulation with floating point values least significant byte fist (little endian)
#define SE_PCM_FBE 5    // Puls-Code-Modulation with floating point values most  significant byte fist (big    endian)

struct wave64_header {
        uint64_t magic;           // Reads as "WAVE64\0\0"
        uint64_t header_size;     // Size of this header excluding the fields magic and header_size, 16 for the header format presented here
        uint64_t rate;            // Sample rate
        uint16_t bit_depth;       // Number of bits per sample
        uint16_t channels;        // Number of channels, i.e. 1 for mono, 2 for stereo, 6 for full DOLBY Digital 5.1
        uint32_t sample_encoding; // Format of each individual sample.
};