C语言实现获得wav文件播放总时间

C语言实现获得wav文件播放总时间

// 单位：秒double get_wav_time_length(char* filename){double len = 0.0;if (filename != NULL){FILE* fp;fp = fopen(filename, "rb");if (fp != NULL){int i;int j;fseek(fp, 28, SEEK_SET);fread(&i, sizeof(i), 1, fp);fseek(fp, 40, SEEK_SET);fread(&j, sizeof(j), 1, fp);fclose(fp);fp = NULL;len = (double)j/(double)i;}}return len;}