From 7ff2fcb36540aaed087e3a2ba2f0f84916bce2e2 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Wed, 9 Apr 2014 08:33:00 +0200
Subject: Add TextureSequence.isTextureAvailable(), allowing triggering action
 only when source becomes ready

---
 .../classes/com/jogamp/opengl/util/texture/TextureSequence.java     | 6 ++++++
 src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java       | 5 +++++
 .../jogamp/opengl/test/junit/jogl/demos/TextureSequenceDemo01.java  | 3 +++
 3 files changed, 14 insertions(+)

(limited to 'src')

diff --git a/src/jogl/classes/com/jogamp/opengl/util/texture/TextureSequence.java b/src/jogl/classes/com/jogamp/opengl/util/texture/TextureSequence.java
index ab9d1f8f0..88f40e927 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/texture/TextureSequence.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/texture/TextureSequence.java
@@ -173,6 +173,12 @@ public interface TextureSequence {
 
     public int[] getTextureWrapST();
 
+    /**
+     * Returns true if texture source is ready <i>and</i> a texture is available
+     * via {@link #getNextTexture(GL)} and {@link #getLastTexture()}.
+     */
+    public boolean isTextureAvailable();
+
     /**
      * Returns the last updated texture.
      * <p>
diff --git a/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java b/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
index 6a0e0061f..63bb22d80 100644
--- a/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
+++ b/src/jogl/classes/jogamp/opengl/util/av/GLMediaPlayerImpl.java
@@ -736,6 +736,11 @@ public abstract class GLMediaPlayerImpl implements GLMediaPlayer {
         frame.getTexture().destroy(gl);
     }
 
+    @Override
+    public final boolean isTextureAvailable() {
+        return State.Paused == state || State.Playing == state;
+    }
+
     @Override
     public final TextureFrame getLastTexture() throws IllegalStateException {
         if( State.Paused != state && State.Playing != state ) {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/TextureSequenceDemo01.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/TextureSequenceDemo01.java
index b015aebba..7034f2c67 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/TextureSequenceDemo01.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/TextureSequenceDemo01.java
@@ -76,6 +76,9 @@ public class TextureSequenceDemo01 implements TextureSequence {
         return texWrapST;
     }
 
+    @Override
+    public boolean isTextureAvailable() { return true; }
+
     @Override
     public TextureSequence.TextureFrame getLastTexture() throws IllegalStateException {
         return frame; // may return null
-- 
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