c语言读取wav音频文件输出浮点内容

好的，以下是一个简单的示例代码，可以实现读取wav音频文件并输出浮点内容：

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

typedef struct {
    char        ChunkID[4];
    uint32_t    ChunkSize;
    char        Format[4];
} RIFF_HEADER;

typedef struct {
    char        Subchunk1ID[4];
    uint32_t    Subchunk1Size;
    uint16_t    AudioFormat;
    uint16_t    NumChannels;
    uint32_t    SampleRate;
    uint32_t    ByteRate;
    uint16_t    BlockAlign;
    uint16_t    BitsPerSample;
} WAVE_FORMAT;

int main(int argc, char* argv[]) {
    if (argc < 2) {
        printf("Usage: %s <wav_file>\n", argv[0]);
        return 1;
    }
    char* filename = argv[1];
    FILE* fp = fopen(filename, "rb");
    if (fp == NULL) {
        printf("Cannot open file '%s'\n", filename);
        return 2;
    }
    RIFF_HEADER riffheader;
    fread(&riffheader, sizeof(riffheader), 1, fp);
    if (strncmp(riffheader.ChunkID, "RIFF", 4) != 0 || strncmp(riffheader.Format, "WAVE", 4) != 0) {
        printf("Invalid wav file!\n");
        return 3;
    }
    WAVE_FORMAT wavefmt;
    fread(&wavefmt, sizeof(wavefmt), 1, fp);
    if (strncmp(wavefmt.Subchunk1ID, "fmt ", 4) != 0) {
        printf("Invalid wav file!\n");
        return 4;
    }
    uint32_t datasize = 0;
    while (fread(&datasize, sizeof(datasize), 1, fp) > 0) {
        if (strncmp((char*)&datasize, "data", 4) == 0) {
            break;
        }
        fseek(fp, datasize, SEEK_CUR);
        fread(&datasize, sizeof(datasize), 1, fp);
    }
    if (datasize == 0) {
        printf("Invalid wav file!\n");
        return 5;
    }
    uint32_t numsamples = datasize / (wavefmt.NumChannels * wavefmt.BitsPerSample / 8);
    float* buffer = (float*)malloc(numsamples * sizeof(float));
    for (uint32_t i = 0; i < numsamples; i++) {
        int16_t sample[2];
        fread(&sample, sizeof(sample), 1, fp);
        buffer[i] = (float)sample[0] / INT16_MAX;
    }
    fclose(fp);
    for (uint32_t i = 0; i < numsamples; i++) {
        printf("%f\n", buffer[i]);
    }
    free(buffer);
    return 0;
}

希望能够帮到你！