linux c语言读取wav文件的文件头

以下是读取wav文件头的C代码示例：

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

typedef struct {
    char chunk_id[4];
    uint32_t chunk_size;
    char format[4];
} riff_header_t;

typedef struct {
    char subchunk1_id[4];
    uint32_t subchunk1_size;
    uint16_t audio_format;
    uint16_t num_channels;
    uint32_t sample_rate;
    uint32_t byte_rate;
    uint16_t block_align;
    uint16_t bits_per_sample;
} fmt_chunk_t;

typedef struct {
    char subchunk2_id[4];
    uint32_t subchunk2_size;
} data_chunk_t;

int main(int argc, char** argv)
{
    if (argc < 2) {
        printf("Usage: %s <wav_file>\n", argv[0]);
        return 1;
    }

    FILE* fp = fopen(argv[1], "rb");
    if (!fp) {
        printf("Failed to open file %s\n", argv[1]);
        return 1;
    }

    // Read RIFF header
    riff_header_t riff_header;
    fread(&riff_header, sizeof(riff_header), 1, fp);

    // Make sure it's a WAV file
    if (strncmp(riff_header.chunk_id, "RIFF", 4) ||
        strncmp(riff_header.format, "WAVE", 4)) {
        printf("%s is not a WAV file\n", argv[1]);
        fclose(fp);
        return 1;
    }

    // Read fmt chunk
    fmt_chunk_t fmt_chunk;
    fread(&fmt_chunk, sizeof(fmt_chunk), 1, fp);

    // Make sure it's a PCM file
    if (fmt_chunk.audio_format != 1) {
        printf("%s is not a PCM file\n", argv[1]);
        fclose(fp);
        return 1;
    }

    // Read data chunk
    data_chunk_t data_chunk;
    fread(&data_chunk, sizeof(data_chunk), 1, fp);

    // Print information
    printf("Channels: %d\n", fmt_chunk.num_channels);
    printf("Sample rate: %d\n", fmt_chunk.sample_rate);
    printf("Bits per sample: %d\n", fmt_chunk.bits_per_sample);
    printf("Data size: %d\n", data_chunk.subchunk2_size);

    fclose(fp);
    return 0;
}

这个示例读取了一个WAV文件的文件头，并打印了一些信息，如通道数、采样率、每个样本的位数和数据大小。请注意，此代码仅适用于标准的PCM WAV文件。如果您要处理其他类型的WAV文件，请根据需要修改代码。