From 13587d80273b19125e5bd8c7a6ccbb9dcd7e2d93 Mon Sep 17 00:00:00 2001
From: Scott Jackson <daneren2005@gmail.com>
Date: Sun, 21 Sep 2014 16:05:54 -0700
Subject: Copy replaygain application logic from adrian-bl/vanilla

---
 .../daneren2005/dsub/service/DownloadService.java  | 49 ++++++++++++++++++++++
 .../daneren2005/dsub/util/tags/BastpUtil.java      | 17 +++-----
 2 files changed, 55 insertions(+), 11 deletions(-)

(limited to 'src/github')

diff --git a/src/github/daneren2005/dsub/service/DownloadService.java b/src/github/daneren2005/dsub/service/DownloadService.java
index 127df768..c3eb3ef7 100644
--- a/src/github/daneren2005/dsub/service/DownloadService.java
+++ b/src/github/daneren2005/dsub/service/DownloadService.java
@@ -47,10 +47,13 @@ import github.daneren2005.dsub.util.ShufflePlayBuffer;
 import github.daneren2005.dsub.util.SimpleServiceBinder;
 import github.daneren2005.dsub.util.Util;
 import github.daneren2005.dsub.util.compat.RemoteControlClientHelper;
+import github.daneren2005.dsub.util.tags.BastpUtil;
 import github.daneren2005.dsub.view.UpdateView;
 import github.daneren2005.serverproxy.BufferProxy;
 
 import java.io.File;
+import java.io.IOError;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
@@ -1415,6 +1418,8 @@ public class DownloadService extends Service {
 							}
 							cachedPosition = position;
 
+							applyReplayGain(mediaPlayer, downloadFile);
+
 							if (start || autoPlayStart) {
 								mediaPlayer.start();
 								setPlayerState(STARTED);
@@ -1473,6 +1478,8 @@ public class DownloadService extends Service {
 							mediaPlayer.setNextMediaPlayer(nextMediaPlayer);
 							nextSetup = true;
 						}
+
+						applyReplayGain(nextMediaPlayer, downloadFile);
 					} catch (Exception x) {
 						handleErrorNext(x);
 					}
@@ -1922,6 +1929,48 @@ public class DownloadService extends Service {
 		}
 	}
 
+	private void applyReplayGain(MediaPlayer mediaPlayer, DownloadFile downloadFile) {
+		if(currentPlaying == null) {
+			return;
+		}
+
+		try {
+			float[] rg = BastpUtil.getReplayGainValues(downloadFile.getFile().getCanonicalPath()); /* track, album */
+			float adjust = 0f;
+			if (true /*mReplayGainAlbumEnabled*/) {
+				adjust = (rg[0] != 0 ? rg[0] : adjust); /* do we have track adjustment ? */
+				adjust = (rg[1] != 0 ? rg[1] : adjust); /* ..or, even better, album adj? */
+			}
+			if (/*mReplayGainTrackEnabled || (mReplayGainAlbumEnabled && */ adjust == 0) {
+				adjust = (rg[1] != 0 ? rg[1] : adjust); /* do we have album adjustment ? */
+				adjust = (rg[0] != 0 ? rg[0] : adjust); /* ..or, even better, track adj? */
+			}
+			if (adjust == 0) {
+				/* No RG value found: decrease volume for untagged song if requested by user */
+				// adjust = (mReplayGainUntaggedDeBump - 150) / 10f;
+			} else {
+				/* This song has some replay gain info, we are now going to apply the 'bump' value
+				** The preferences stores the raw value of the seekbar, that's 0-150
+				** But we want -15 <-> +15, so 75 shall be zero */
+				// adjust += 2 * (mReplayGainBump - 75) / 10f; /* 2* -> we want +-15, not +-7.5 */
+			}
+			/*if (mReplayGainAlbumEnabled == false && mReplayGainTrackEnabled == false) {
+				// Feature is disabled: Make sure that we are going to 100% volume
+				adjust = 0f;
+			}*/
+			float rg_result = ((float) Math.pow(10, (adjust / 20)))/* * mFadeOut*/;
+			if (rg_result > 1.0f) {
+				rg_result = 1.0f; /* android would IGNORE the change if this is > 1 and we would end up with the wrong volume */
+			} else if (rg_result < 0.0f) {
+				rg_result = 0.0f;
+			}
+			Log.d(TAG, "Applied volume of " + rg_result);
+			mediaPlayer.setVolume(rg_result, rg_result);
+		} catch(IOException e) {
+			Log.w(TAG, "Failed to apply replay gain values", e);
+		}
+	}
+
 	private class BufferTask extends SilentBackgroundTask<Void> {
 		private final DownloadFile downloadFile;
 		private final int position;
diff --git a/src/github/daneren2005/dsub/util/tags/BastpUtil.java b/src/github/daneren2005/dsub/util/tags/BastpUtil.java
index 99279f62..a738bbce 100644
--- a/src/github/daneren2005/dsub/util/tags/BastpUtil.java
+++ b/src/github/daneren2005/dsub/util/tags/BastpUtil.java
@@ -21,17 +21,12 @@ import android.util.LruCache;
 import java.util.HashMap;
 import java.util.Vector;
 
-public class BastpUtil {
-	private RGLruCache rgCache;
-	
-	public BastpUtil() {
-		rgCache = new RGLruCache(16); /* Cache up to 16 entries */
-	}
-	
-	
+public final class BastpUtil {
+	private static final RGLruCache rgCache = new RGLruCache(16);
+
 	/** Returns the ReplayGain values of 'path' as <track,album>
 	 */
-	public float[] getReplayGainValues(String path) {
+	public static float[] getReplayGainValues(String path) {
 		float[] cached = rgCache.get(path);
 
 		if(cached == null) {
@@ -45,7 +40,7 @@ public class BastpUtil {
 	
 	/** Parse given file and return track,album replay gain values
 	 */
-	private float[] getReplayGainValuesFromFile(String path) {
+	private static float[] getReplayGainValuesFromFile(String path) {
 		String[] keys = { "REPLAYGAIN_TRACK_GAIN", "REPLAYGAIN_ALBUM_GAIN" };
 		float[] adjust= { 0f                     , 0f                      };
 		HashMap tags  = (new Bastp()).getTags(path);
@@ -68,7 +63,7 @@ public class BastpUtil {
 	
 	/** LRU cache for ReplayGain values
 	 */
-	private class RGLruCache extends LruCache<String, float[]> {
+	private static class RGLruCache extends LruCache<String, float[]> {
 		public RGLruCache(int size) {
 			super(size);
 		}
-- 
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