C语言对比两个音频文件内容
时间: 2023-10-09 17:06:12 浏览: 43
要比较两个音频文件的内容,需要使用C语言中的音频处理库,如libsndfile和libsox。
以下是一个使用libsndfile库比较两个音频文件内容的示例代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <sndfile.h>
#define BUFFER_SIZE 4096
int main(int argc, char *argv[]) {
SNDFILE *sndfile1, *sndfile2;
SF_INFO sfinfo1, sfinfo2;
float buffer1[BUFFER_SIZE], buffer2[BUFFER_SIZE];
int readcount1, readcount2;
if (argc != 3) {
printf("Usage: %s filename1 filename2\n", argv[0]);
return 1;
}
// 打开两个音频文件
sndfile1 = sf_open(argv[1], SFM_READ, &sfinfo1);
if (!sndfile1) {
printf("Error opening file: %s\n", sf_strerror(NULL));
return 1;
}
sndfile2 = sf_open(argv[2], SFM_READ, &sfinfo2);
if (!sndfile2) {
printf("Error opening file: %s\n", sf_strerror(NULL));
sf_close(sndfile1);
return 1;
}
// 比较两个音频文件内容
while ((readcount1 = sf_read_float(sndfile1, buffer1, BUFFER_SIZE)) > 0) {
readcount2 = sf_read_float(sndfile2, buffer2, BUFFER_SIZE);
if (readcount1 != readcount2 || memcmp(buffer1, buffer2, readcount1 * sizeof(float)) != 0) {
printf("The two files are different.\n");
sf_close(sndfile1);
sf_close(sndfile2);
return 1;
}
}
// 关闭音频文件
sf_close(sndfile1);
sf_close(sndfile2);
printf("The two files are the same.\n");
return 0;
}
```
以上代码使用了memcmp函数对两个音频文件的内容进行比较。如果两个音频文件内容相同,则输出"The two files are the same.",否则输出"The two files are different."。
另外,也可以使用libsox库比较两个音频文件的内容。以下是一个使用libsox库比较两个音频文件内容的示例代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <sox.h>
int main(int argc, char *argv[]) {
sox_format_t *in1, *in2;
sox_signalinfo_t signal1, signal2;
sox_sample_t *buffer1, *buffer2;
int buffer_size1, buffer_size2, readcount1, readcount2;
if (argc != 3) {
printf("Usage: %s filename1 filename2\n", argv[0]);
return 1;
}
// 打开两个音频文件
in1 = sox_open_read(argv[1], NULL, NULL, NULL);
if (!in1) {
printf("Error opening file: %s\n", sox_strerror(NULL));
return 1;
}
in2 = sox_open_read(argv[2], NULL, NULL, NULL);
if (!in2) {
printf("Error opening file: %s\n", sox_strerror(NULL));
sox_close(in1);
return 1;
}
// 获取两个音频文件的信号信息
signal1 = in1->signal;
signal2 = in2->signal;
// 比较两个音频文件内容
if (signal1.channels != signal2.channels || signal1.rate != signal2.rate) {
printf("The two files are different.\n");
sox_close(in1);
sox_close(in2);
return 1;
}
buffer_size1 = signal1.channels * signal1.rate;
buffer_size2 = signal2.channels * signal2.rate;
buffer1 = malloc(buffer_size1 * sizeof(sox_sample_t));
buffer2 = malloc(buffer_size2 * sizeof(sox_sample_t));
while ((readcount1 = sox_read(in1, buffer1, buffer_size1)) > 0) {
readcount2 = sox_read(in2, buffer2, buffer_size2);
if (readcount1 != readcount2 || memcmp(buffer1, buffer2, readcount1 * sizeof(sox_sample_t)) != 0) {
printf("The two files are different.\n");
free(buffer1);
free(buffer2);
sox_close(in1);
sox_close(in2);
return 1;
}
}
// 关闭音频文件
sox_close(in1);
sox_close(in2);
free(buffer1);
free(buffer2);
printf("The two files are the same.\n");
return 0;
}
```
以上代码使用了memcmp函数对两个音频文件的内容进行比较。如果两个音频文件内容相同,则输出"The two files are the same.",否则输出"The two files are different."。