1 files changed, 176 insertions, 0 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java b/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java
new file mode 100644
index 000000000..4622d6975
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+++ b/src/jogl/classes/com/jogamp/opengl/util/texture/ImageSequence.java
@@ -0,0 +1,176 @@
+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.opengl.util.texture;
+
+import java.io.IOException;
+import java.net.URLConnection;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.media.opengl.GL;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLProfile;
+
+import com.jogamp.common.util.IOUtil;
+
+/**
+ * Simple {@link TextureSequence} implementation
+ * allowing {@link #addFrame(GL, Texture) existing textures}
+ * or {@link #addFrame(GL, Class, String, String) image streams}
+ * to be used and <i>replayed</i> as {@link TextureSequence.TextureFrame frames}.
+ */
+public class ImageSequence implements TextureSequence {
+    private final int textureUnit;
+    private final boolean useBuildInTexLookup;
+    private final List<TextureSequence.TextureFrame> frames = new ArrayList<TextureSequence.TextureFrame>();
+    private final int[] texMinMagFilter = { GL.GL_NEAREST, GL.GL_NEAREST };
+    private final int[] texWrapST = { GL.GL_CLAMP_TO_EDGE, GL.GL_CLAMP_TO_EDGE };
+    private volatile int frameIdx = 0;
+    private volatile boolean manualStepping = false;
+
+    public ImageSequence(final int textureUnit, final boolean useBuildInTexLookup) {
+        this.textureUnit = textureUnit;
+        this.useBuildInTexLookup = useBuildInTexLookup;
+    }
+
+    public void setParams(final int magFilter, final int minFilter, final int wrapS, final int wrapT) {
+        texMinMagFilter[0] = minFilter;
+        texMinMagFilter[1] = magFilter;
+        texWrapST[0] = wrapS;
+        texWrapST[1] = wrapT;
+    }
+
+    public final void addFrame(final GL gl, final Texture tex) {
+        final TextureSequence.TextureFrame frame = new TextureSequence.TextureFrame(tex);
+        frames.add(frame);
+        tex.bind(gl);
+        gl.glTexParameteri(getTextureTarget(), GL.GL_TEXTURE_MIN_FILTER, texMinMagFilter[0]);
+        gl.glTexParameteri(getTextureTarget(), GL.GL_TEXTURE_MAG_FILTER, texMinMagFilter[1]);
+        gl.glTexParameteri(getTextureTarget(), GL.GL_TEXTURE_WRAP_S, texWrapST[0]);
+        gl.glTexParameteri(getTextureTarget(), GL.GL_TEXTURE_WRAP_T, texWrapST[1]);
+    }
+
+    public final void addFrame(final GL gl, final Class<?> context, final String imageResourcePath, final String imageSuffix) throws IOException {
+        URLConnection urlConn = IOUtil.getResource(context, imageResourcePath);
+        if(null != urlConn) {
+            final TextureData texData = TextureIO.newTextureData(GLProfile.getGL2ES2(), urlConn.getInputStream(), false, imageSuffix);
+            final Texture tex = new Texture(getTextureTarget());
+            tex.updateImage(gl, texData);
+            addFrame(gl, tex);
+        }
+    }
+    public final int getFrameCount() { return frames.size(); }
+    public final int getCurrentIdx() { return frameIdx; }
+    public final void setCurrentIdx(final int idx) throws IndexOutOfBoundsException {
+        if( 0 > idx || idx >= frames.size() ) {
+            throw new IndexOutOfBoundsException("idx shall be within 0 <= "+idx+" < "+frames.size());
+        }
+        frameIdx=idx;
+    }
+    public final void setManualStepping(final boolean v) { manualStepping = v; }
+    public final boolean getManualStepping() { return manualStepping; }
+    public final TextureSequence.TextureFrame getFrame(final int idx) { return frames.get(idx); }
+
+    public void destroy(GL gl) throws GLException {
+        for(int i=frames.size()-1; i>=0; i--) {
+            frames.get(i).getTexture().destroy(gl);
+        }
+        frames.clear();
+    }
+
+    @Override
+    public int getTextureTarget() {
+        return GL.GL_TEXTURE_2D;
+    }
+
+    @Override
+    public int getTextureUnit() {
+        return textureUnit;
+    }
+
+    @Override
+    public int[] getTextureMinMagFilter() {
+        return texMinMagFilter;
+    }
+
+    @Override
+    public int[] getTextureWrapST() {
+        return texWrapST;
+    }
+
+    @Override
+    public boolean isTextureAvailable() { return frames.size() > 0; }
+
+    @Override
+    public TextureSequence.TextureFrame getLastTexture() throws IllegalStateException {
+        return frames.get(frameIdx); // may return null
+    }
+
+    @Override
+    public TextureSequence.TextureFrame getNextTexture(GL gl) throws IllegalStateException {
+        if( !manualStepping ) {
+            frameIdx = ( frameIdx + 1 ) % frames.size();
+        }
+        return frames.get(frameIdx);
+    }
+
+    @Override
+    public String getRequiredExtensionsShaderStub() throws IllegalStateException {
+        return "// TextTextureSequence: No extensions required\n";
+    }
+
+    @Override
+    public String getTextureSampler2DType() throws IllegalStateException {
+        return "sampler2D" ;
+    }
+
+    private String textureLookupFunctionName = "myTexture2D";
+
+    @Override
+    public String getTextureLookupFunctionName(String desiredFuncName) throws IllegalStateException {
+        if(useBuildInTexLookup) {
+            return "texture2D";
+        }
+        if(null != desiredFuncName && desiredFuncName.length()>0) {
+            textureLookupFunctionName = desiredFuncName;
+        }
+        return textureLookupFunctionName;
+    }
+
+    @Override
+    public String getTextureLookupFragmentShaderImpl() throws IllegalStateException {
+        if(useBuildInTexLookup) {
+          return "";
+        }
+        return
+          "\n"+
+          "vec4 "+textureLookupFunctionName+"(in "+getTextureSampler2DType()+" image, in vec2 texCoord) {\n"+
+          "  return texture2D(image, texCoord);\n"+
+          "}\n\n";
+    }
+}