#939 Adds MP3 encoder preferences to the User Preferences dialog and provides user control over sample rate and MP3 encoder settings. MP3 preferences are global and affect both recording and streaming. (#1159)

Co-authored-by: Dennis Sheirer <dsheirer@github.com>
2026-11-12 08:37:25 -05:00 · 2022-03-10 04:17:35 -05:00
parent 0e8c9591e4
commit 2355dfce07
40 changed files with 1369 additions and 347 deletions
--- a/src/main/java/io/github/dsheirer/preference/mp3/MP3Preference.java
+++ b/src/main/java/io/github/dsheirer/preference/mp3/MP3Preference.java
@@ -0,0 +1,131 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2022 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.preference.mp3;
+
+import io.github.dsheirer.audio.convert.AudioSampleRate;
+import io.github.dsheirer.audio.convert.MP3Setting;
+import io.github.dsheirer.preference.Preference;
+import io.github.dsheirer.preference.PreferenceType;
+import io.github.dsheirer.sample.Listener;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.prefs.Preferences;
+
+/**
+ * User preferences for playlists
+ */
+public class MP3Preference extends Preference
+{
+    private static final String PREFERENCE_KEY_AUDIO_MP3_SETTING = "audio.mp3.setting";
+    private static final String PREFERENCE_KEY_AUDIO_MP3_SAMPLE_RATE = "audio.mp3.sample.rate";
+    private final static Logger mLog = LoggerFactory.getLogger(MP3Preference.class);
+    private Preferences mPreferences = Preferences.userNodeForPackage(MP3Preference.class);
+    private AudioSampleRate mAudioSampleRate;
+    private MP3Setting mMP3Setting;
+
+    /**
+     * Constructs this preference with an update listener
+     * @param updateListener to receive notifications whenever these preferences change
+     */
+    public MP3Preference(Listener<PreferenceType> updateListener)
+    {
+        super(updateListener);
+    }
+
+    @Override
+    public PreferenceType getPreferenceType()
+    {
+        return PreferenceType.MP3;
+    }
+
+
+    /**
+     * MP3 Setting
+     */
+    public MP3Setting getMP3Setting()
+    {
+        if(mMP3Setting == null)
+        {
+            try
+            {
+                String setting = mPreferences.get(PREFERENCE_KEY_AUDIO_MP3_SETTING, MP3Setting.getDefault().name());
+                mMP3Setting = MP3Setting.valueOf(setting);
+            }
+            catch(Exception e)
+            {
+                mLog.error("Error parsing mp3 setting preference", e);
+            }
+
+            if(mMP3Setting == null)
+            {
+                mMP3Setting = MP3Setting.getDefault();
+            }
+        }
+
+        return mMP3Setting;
+    }
+
+    /**
+     * Sets the MP3 setting preference
+     */
+    public void setMP3Setting(MP3Setting mp3Setting)
+    {
+        mMP3Setting = mp3Setting;
+        mPreferences.put(PREFERENCE_KEY_AUDIO_MP3_SETTING, mp3Setting.name());
+        notifyPreferenceUpdated();
+    }
+
+    /**
+     * Preferred audio sample rate for input to the LAME MP3 encoder
+     */
+    public AudioSampleRate getAudioSampleRate()
+    {
+        if(mAudioSampleRate == null)
+        {
+            try
+            {
+                String rate = mPreferences.get(PREFERENCE_KEY_AUDIO_MP3_SAMPLE_RATE, AudioSampleRate.getDefault().name());
+                mAudioSampleRate = AudioSampleRate.valueOf(rate);
+            }
+            catch(Exception e)
+            {
+                mLog.error("Error parsing mp3 setting preference", e);
+            }
+
+            if(mAudioSampleRate == null)
+            {
+                mAudioSampleRate = AudioSampleRate.getDefault();
+            }
+        }
+
+        return mAudioSampleRate;
+    }
+
+    /**
+     * Sets the input Audio Sample Rate preference
+     */
+    public void setAudioSampleRate(AudioSampleRate audioSampleRate)
+    {
+        mAudioSampleRate = audioSampleRate;
+        mPreferences.put(PREFERENCE_KEY_AUDIO_MP3_SAMPLE_RATE, mAudioSampleRate.name());
+        notifyPreferenceUpdated();
+    }
+}