1 files changed, 149 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/audiofx/audiofx/eq/EqUtils.java b/src/org/cyanogenmod/audiofx/audiofx/eq/EqUtils.java
new file mode 100644
index 0000000..30d546c
--- /dev/null
+++ b/src/org/cyanogenmod/audiofx/audiofx/eq/EqUtils.java
@@ -0,0 +1,149 @@
+package com.cyngn.audiofx.eq;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.util.Log;
+
+import com.cyngn.audiofx.Preset;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class EqUtils {
+
+    private static final String TAG = EqUtils.class.getSimpleName();
+    private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
+    private static final String DEFAULT_DELIMITER = ";";
+
+    public static String getZeroedBandsString(int length) {
+        return getZeroedBandsString(length, DEFAULT_DELIMITER);
+    }
+
+    public static float[] stringBandsToFloats(String input) {
+        return stringBandsToFloats(input, DEFAULT_DELIMITER);
+    }
+
+    public static String floatLevelsToString(float[] levels) {
+        return floatLevelsToString(levels, DEFAULT_DELIMITER);
+    }
+
+    public static short[] stringBandsToShorts(String input) {
+        return stringBandsToShorts(input, DEFAULT_DELIMITER);
+    }
+
+    public static String shortLevelsToString(short[] levels) {
+        return shortLevelsToString(levels, DEFAULT_DELIMITER);
+    }
+
+    public static String getZeroedBandsString(int length, final String delimiter) {
+        StringBuilder buff = new StringBuilder();
+        for (int i = 0; i < length; i++) {
+            buff.append("0").append(delimiter);
+        }
+        buff.deleteCharAt(buff.length() - 1);
+        return buff.toString();
+    }
+
+    public static String floatLevelsToString(float[] levels, final String delimiter) {
+        // save
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < levels.length; i++) {
+            builder.append(levels[i]);
+            builder.append(delimiter);
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+
+
+    public static String shortLevelsToString(short[] levels, final String delimiter) {
+        // save
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < levels.length; i++) {
+            builder.append(levels[i]);
+            builder.append(delimiter);
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+
+    public static String intLevelsToString(int[] levels, final String delimiter) {
+        // save
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < levels.length; i++) {
+            builder.append(levels[i]);
+            builder.append(delimiter);
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+
+    public static <T> String levelsToString(T[] levels, final String delimiter) {
+        // save
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < levels.length; i++) {
+            builder.append(levels[i]);
+            builder.append(delimiter);
+        }
+        builder.deleteCharAt(builder.length() - 1);
+        return builder.toString();
+    }
+
+    public static short[] stringBandsToShorts(String input, final String delimiter) {
+        String[] levels = input.split(delimiter);
+
+        short[] equalizerLevels = new short[levels.length];
+        for (int i = 0; i < levels.length; i++) {
+            equalizerLevels[i] = (short) (Float.parseFloat(levels[i]));
+        }
+        return equalizerLevels;
+    }
+
+
+    public static float[] stringBandsToFloats(String input, final String delimiter) {
+        String[] levels = input.split(delimiter);
+
+        float[] equalizerLevels = new float[levels.length];
+        for (int i = 0; i < levels.length; i++) {
+            equalizerLevels[i] = (Float.parseFloat(levels[i]));
+        }
+        return equalizerLevels;
+    }
+
+    public static float[] convertDecibelsToMillibels(float[] decibels) {
+        if (DEBUG) Log.i(TAG, "++ convertDecibelsToMillibels(" + Arrays.toString(decibels) + ")");
+
+        float[] newvals = new float[decibels.length];
+        for (int i = 0; i < decibels.length; i++) {
+            newvals[i] = decibels[i] * 100;
+        }
+
+
+        if (DEBUG) Log.i(TAG, "-- convertDecibelsToMillibels(" + Arrays.toString(newvals) + ")");
+        return newvals;
+    }
+
+    public static short[] convertDecibelsToMillibelsInShorts(float[] decibels) {
+        if (DEBUG) Log.i(TAG, "++ convertDecibelsToMillibels(" + Arrays.toString(decibels) + ")");
+
+        short[] newvals = new short[decibels.length];
+        for (int i = 0; i < decibels.length; i++) {
+            newvals[i] = (short) (decibels[i] * 100);
+        }
+
+
+        if (DEBUG) Log.i(TAG, "-- convertDecibelsToMillibels(" + Arrays.toString(newvals) + ")");
+        return newvals;
+    }
+
+    public static float[] convertMillibelsToDecibels(float[] millibels) {
+        if (DEBUG) Log.i(TAG, "++ convertMillibelsToDecibels(" + Arrays.toString(millibels) + ")");
+        float[] newvals = new float[millibels.length];
+        for (int i = 0; i < millibels.length; i++) {
+            newvals[i] = millibels[i] / 100;
+        }
+        if (DEBUG) Log.i(TAG, "-- convertMillibelsToDecibels(" + Arrays.toString(newvals) + ")");
+        return newvals;
+    }
+}