c语言打开wav处理数据后写入另一个wav例子

好的，以下是一个简单的C语言程序，用于打开WAV文件、处理数据并将其写入另一个WAV文件：

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

#define BUFFER_SIZE 4096

typedef struct {
    char chunk_id[4];
    int chunk_size;
    char format[4];
} ChunkHeader;

typedef struct {
    char subchunk1_id[4];
    int subchunk1_size;
    short audio_format;
    short num_channels;
    int sample_rate;
    int byte_rate;
    short block_align;
    short bits_per_sample;
} WAVHeader;

int main(int argc, char* argv[]) {

    char* input_file_path = argv[1];
    char* output_file_path = argv[2];

    FILE* input_file = fopen(input_file_path, "rb");
    if (input_file == NULL) {
        perror("Failed to open input file");
        exit(EXIT_FAILURE);
    }

    FILE* output_file = fopen(output_file_path, "wb");
    if (output_file == NULL) {
        perror("Failed to open output file");
        exit(EXIT_FAILURE);
    }

    // Read WAV header from input file
    WAVHeader wav_header;
    fread(&wav_header, sizeof(wav_header), 1, input_file);

    // Write the same header to output file
    fwrite(&wav_header, sizeof(wav_header), 1, output_file);

    // Process WAV data
    char buffer[BUFFER_SIZE];
    while (1) {
        size_t bytes_read = fread(buffer, 1, sizeof(buffer), input_file);
        if (bytes_read == 0) {
            break;
        }

        // Process buffer here...
        // For example, you could invert the audio by subtracting each sample from 32767:
        for (int i = 0; i < bytes_read; i += 2) {
            short sample = buffer[i] | buffer[i + 1] << 8;
            sample = 32767 - sample;
            buffer[i] = sample & 0xFF;
            buffer[i + 1] = (sample >> 8) & 0xFF;
        }

        fwrite(buffer, 1, bytes_read, output_file);
    }

    // Close files
    fclose(input_file);
    fclose(output_file);

    return 0;
}

注意，这只是一个简单的示例程序，它没有进行任何错误检查，因此您需要在实际使用中添加错误处理代码。此外，为了让程序更加通用，您可能需要添加更多的参数来指定采样率、位深、通道数等。