From 13a81396bd5183d1f2c00c517936c54efaa61db3 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Sat, 23 Sep 2023 20:44:09 +0200
Subject: Bug 1455 - GLMediaPlayer: Add isAutioMuted() query on volume and
 earmark audio-volume if not initialized and set it when AudioSink becomes
 available

Setting the audio volume before initialization shall impact GLMediaPlayer when it becomes initialized.

Further add a query if audio is muted, merely based on volume.
---
 .../com/jogamp/opengl/util/av/GLMediaPlayer.java   |  3 +++
 .../jogamp/opengl/util/av/GLMediaPlayerImpl.java   | 27 ++++++++++++++++++----
 2 files changed, 25 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/jogl/classes/com/jogamp/opengl/util/av/GLMediaPlayer.java b/src/jogl/classes/com/jogamp/opengl/util/av/GLMediaPlayer.java
index 51724d240..3e4d589f3 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/av/GLMediaPlayer.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/av/GLMediaPlayer.java
@@ -545,6 +545,9 @@ public interface GLMediaPlayer extends TextureSequence {
     /** Returns the audio volume. */
     public float getAudioVolume();
 
+    /** Returns true if audio is muted, i.e. {@link #setAudioVolume(float)} to zero. */
+    public boolean isAudioMuted();
+
     /**
      * Starts or resumes the <i>StreamWorker</i> decoding thread.
      * <p>
diff --git a/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java b/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
index 3ca5f9aac..8859d537e 100644
--- a/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
+++ b/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
@@ -59,6 +59,7 @@ import com.jogamp.common.util.InterruptSource;
 import com.jogamp.common.util.LFRingbuffer;
 import com.jogamp.common.util.Ringbuffer;
 import com.jogamp.common.util.WorkerThread;
+import com.jogamp.math.FloatUtil;
 import com.jogamp.opengl.GLExtensions;
 import com.jogamp.opengl.util.av.GLMediaPlayer;
 import com.jogamp.opengl.util.glsl.ShaderCode;
@@ -533,6 +534,12 @@ public abstract class GLMediaPlayerImpl implements GLMediaPlayer {
         getAudioVolumeImpl();
         return audioVolume;
     }
+
+    @Override
+    public boolean isAudioMuted() {
+        return FloatUtil.isZero(audioVolume);
+    }
+
     /**
      * Override if not using AudioSink, or AudioSink's {@link AudioSink#getVolume()} is not sufficient!
      */
@@ -542,21 +549,30 @@ public abstract class GLMediaPlayerImpl implements GLMediaPlayer {
         }
     }
 
+    private static final float clipAudioVolume(final float v) {
+        if( v < 0.01f ) {
+            return 0.0f;
+        } else if( Math.abs(1.0f - v) < 0.01f ) {
+            return 1.0f;
+        }
+        return v;
+    }
+
     @Override
     public boolean setAudioVolume(float v) {
         synchronized( stateLock ) {
             final float preVolume = audioVolume;
             boolean res = false;
+            v = clipAudioVolume(v);
             if(State.Uninitialized != state ) {
-                if( Math.abs(v) < 0.01f ) {
-                    v = 0.0f;
-                } else if( Math.abs(1.0f - v) < 0.01f ) {
-                    v = 1.0f;
-                }
                 if( setAudioVolumeImpl(v) ) {
                     audioVolume = v;
                     res = true;
                 }
+            } else {
+                // earmark ..
+                audioVolume = v;
+                res = true;
             }
             if(DEBUG) { System.err.println("setAudioVolume("+v+"): "+state+", "+preVolume+" -> "+audioVolume+", "+toString()); }
             return res;
@@ -682,6 +698,7 @@ public abstract class GLMediaPlayerImpl implements GLMediaPlayer {
                 removeAllTextureFrames(gl);
                 if( State.Uninitialized != state ) {
                     initGLImpl(gl);
+                    setAudioVolume( audioVolume ); // update volume
                     if(DEBUG) {
                         System.err.println("initGLImpl.X "+this);
                     }
-- 
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