added BitmapTileLayer, and TileSource interface from mapsforge

src/org/oscim/layers/tile/BitmapTileLayer.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright 2013 Hannes Janetzek
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.layers.tile;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.zip.GZIPInputStream;
+
+import org.oscim.layers.tile.bitmap.TileSource;
+import org.oscim.renderer.layer.BitmapLayer;
+import org.oscim.renderer.layer.Layers;
+import org.oscim.view.MapView;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+
+public class BitmapTileLayer extends TileLayer<TileLoader> {
+	private static final int TIMEOUT_CONNECT = 5000;
+	private static final int TIMEOUT_READ = 10000;
+
+	final TileSource mTileSource;
+
+	public BitmapTileLayer(MapView mapView, TileSource tileSource) {
+		super(mapView);
+		mTileSource = tileSource;
+	}
+
+	@Override
+	protected TileLoader createLoader(JobQueue q, TileManager tm) {
+		return new TileLoader(q, tm) {
+
+			@Override
+			protected boolean executeJob(MapTile tile) {
+				URL url;
+				try {
+					url = mTileSource.getTileUrl(tile);
+					URLConnection urlConnection = getURLConnection(url);
+					InputStream inputStream = getInputStream(urlConnection);
+					Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
+
+					tile.layers = new Layers();
+					BitmapLayer l = new BitmapLayer();
+					l.setBitmap(bitmap);
+
+					tile.layers.textureLayers = l;
+
+				} catch (Exception e) {
+					e.printStackTrace();
+					return false;
+				}
+				return false;
+			}
+
+			@Override
+			public void cleanup() {
+			}
+
+			private InputStream getInputStream(URLConnection urlConnection) throws IOException {
+				if ("gzip".equals(urlConnection.getContentEncoding())) {
+					return new GZIPInputStream(urlConnection.getInputStream());
+				}
+				return urlConnection.getInputStream();
+			}
+
+			private URLConnection getURLConnection(URL url) throws IOException {
+				URLConnection urlConnection = url.openConnection();
+				urlConnection.setConnectTimeout(TIMEOUT_CONNECT);
+				urlConnection.setReadTimeout(TIMEOUT_READ);
+				return urlConnection;
+			}
+		};
+	}
+}

src/org/oscim/layers/tile/TileLoader.java

@@ -19,9 +19,6 @@ import org.oscim.utils.PausableThread;
 public abstract class TileLoader extends PausableThread {
 	private static int id;
 
-	public interface Factory<T extends TileLoader>{
-		T create(JobQueue jobQueue,	TileManager tileManager);
-	}
 
 	private final String THREAD_NAME;
 	private final JobQueue mJobQueue;

src/org/oscim/layers/tile/TileRenderer.java

@@ -22,6 +22,7 @@ import org.oscim.core.MapPosition;
 import org.oscim.core.Tile;
 import org.oscim.renderer.GLRenderer;
 import org.oscim.renderer.GLRenderer.Matrices;
+import org.oscim.renderer.layer.BitmapRenderer;
 import org.oscim.renderer.layer.Layer;
 import org.oscim.renderer.layer.LineRenderer;
 import org.oscim.renderer.layer.LineTexRenderer;
@@ -185,6 +186,17 @@ public class TileRenderer {
 			}
 		}
 
+		for (Layer l = t.layers.textureLayers; l != null;) {
+			switch (l.type) {
+				case Layer.BITMAP:
+					l = BitmapRenderer.draw(l, 1, m);
+					break;
+
+				default:
+					l = l.next;
+			}
+		}
+
 		// clear clip-region and could also draw 'fade-effect'
 		if (mFaded)
 			PolygonRenderer.drawOver(m, true, 0x22000000);

src/org/oscim/layers/tile/bitmap/AbstractTileSource.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.layers.tile.bitmap;
+
+public abstract class AbstractTileSource implements TileSource {
+	protected final String hostName;
+	protected final int port;
+
+	protected AbstractTileSource(String hostName, int port) {
+		if (hostName == null || hostName.isEmpty()) {
+			throw new IllegalArgumentException("no host name specified");
+		} else if (port < 0 || port > 65535) {
+			throw new IllegalArgumentException("invalid port number: " + port);
+		}
+
+		this.hostName = hostName;
+		this.port = port;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj) {
+			return true;
+		} else if (!(obj instanceof AbstractTileSource)) {
+			return false;
+		}
+		AbstractTileSource other = (AbstractTileSource) obj;
+		if (!this.hostName.equals(other.hostName)) {
+			return false;
+		} else if (this.port != other.port) {
+			return false;
+		}
+		return true;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + this.hostName.hashCode();
+		result = prime * result + this.port;
+		return result;
+	}
+}

src/org/oscim/layers/tile/bitmap/MapQuestAerial.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.layers.tile.bitmap;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import org.oscim.core.Tile;
+
+public class MapQuestAerial extends AbstractTileSource {
+	public static final MapQuestAerial INSTANCE = new MapQuestAerial("otile1.mqcdn.com", 80);
+	private static final int PARALLEL_REQUESTS_LIMIT = 8;
+	private static final String PROTOCOL = "http";
+	private static final int ZOOM_LEVEL_MAX = 18;
+	private static final int ZOOM_LEVEL_MIN = 0;
+
+	public MapQuestAerial(String hostName, int port) {
+		super(hostName, port);
+	}
+
+	@Override
+	public int getParallelRequestsLimit() {
+		return PARALLEL_REQUESTS_LIMIT;
+	}
+
+	@Override
+	public URL getTileUrl(Tile tile) throws MalformedURLException {
+		StringBuilder stringBuilder = new StringBuilder(32);
+
+		stringBuilder.append("/tiles/1.0.0/sat/");
+		stringBuilder.append(tile.zoomLevel);
+		stringBuilder.append('/');
+		stringBuilder.append(tile.tileX);
+		stringBuilder.append('/');
+		stringBuilder.append(tile.tileY);
+		stringBuilder.append(".jpg");
+
+		return new URL(PROTOCOL, this.hostName, this.port, stringBuilder.toString());
+	}
+
+	@Override
+	public byte getZoomLevelMax() {
+		return ZOOM_LEVEL_MAX;
+	}
+
+	@Override
+	public byte getZoomLevelMin() {
+		return ZOOM_LEVEL_MIN;
+	}
+}

src/org/oscim/layers/tile/bitmap/OpenStreetMapMapnik.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.layers.tile.bitmap;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import org.oscim.core.Tile;
+
+public class OpenStreetMapMapnik extends AbstractTileSource {
+	public static final OpenStreetMapMapnik INSTANCE = new OpenStreetMapMapnik("tile.openstreetmap.org", 80);
+	private static final int PARALLEL_REQUESTS_LIMIT = 8;
+	private static final String PROTOCOL = "http";
+	private static final int ZOOM_LEVEL_MAX = 18;
+	private static final int ZOOM_LEVEL_MIN = 0;
+
+	public OpenStreetMapMapnik(String hostName, int port) {
+		super(hostName, port);
+	}
+
+	@Override
+	public int getParallelRequestsLimit() {
+		return PARALLEL_REQUESTS_LIMIT;
+	}
+
+	@Override
+	public URL getTileUrl(Tile tile) throws MalformedURLException {
+		StringBuilder stringBuilder = new StringBuilder(32);
+
+		stringBuilder.append('/');
+		stringBuilder.append(tile.zoomLevel);
+		stringBuilder.append('/');
+		stringBuilder.append(tile.tileX);
+		stringBuilder.append('/');
+		stringBuilder.append(tile.tileY);
+		stringBuilder.append(".png");
+
+		return new URL(PROTOCOL, this.hostName, this.port, stringBuilder.toString());
+	}
+
+	@Override
+	public byte getZoomLevelMax() {
+		return ZOOM_LEVEL_MAX;
+	}
+
+	@Override
+	public byte getZoomLevelMin() {
+		return ZOOM_LEVEL_MIN;
+	}
+}

src/org/oscim/layers/tile/bitmap/TileSource.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.layers.tile.bitmap;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import org.oscim.core.Tile;
+
+public interface TileSource {
+	/**
+	 * @return the maximum number of parallel requests which this {@code TileSource} supports.
+	 */
+	int getParallelRequestsLimit();
+
+	/**
+	 * @return the download URL for the given {@code Tile}.
+	 */
+	URL getTileUrl(Tile tile) throws MalformedURLException;
+
+	/**
+	 * @return the maximum zoom level which this {@code TileSource} supports.
+	 */
+	byte getZoomLevelMax();
+
+	/**
+	 * @return the minimum zoom level which this {@code TileSource} supports.
+	 */
+	byte getZoomLevelMin();
+}

src/org/oscim/renderer/GLRenderer.java

@@ -243,8 +243,8 @@ public class GLRenderer implements GLSurfaceView.Renderer {
 				| GLES20.GL_DEPTH_BUFFER_BIT
 				| GLES20.GL_STENCIL_BUFFER_BIT);
 
-		boolean tilesChanged = true;
-		boolean positionChanged = true;
+		boolean tilesChanged = false;
+		boolean positionChanged = false;
 
 		// get current MapPosition, set mBoxCoords (mapping of screen to model
 		// coordinates)
@@ -253,7 +253,7 @@ public class GLRenderer implements GLSurfaceView.Renderer {
 		synchronized (mMapViewPosition) {
 			mMapViewPosition.updateAnimation();
 
-			positionChanged |= mMapViewPosition.getMapPosition(pos);
+			positionChanged = mMapViewPosition.getMapPosition(pos);
 
 			if (positionChanged)
 				mMapViewPosition.getMapViewProjection(mBoxCoords);

src/org/oscim/renderer/layer/BitmapLayer.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2013 Hannes Janetzek
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.renderer.layer;
+
+import java.nio.ShortBuffer;
+
+import org.oscim.core.Tile;
+import org.oscim.renderer.GLRenderer;
+
+import android.graphics.Bitmap;
+
+public class BitmapLayer extends TextureLayer {
+	//	private final static String TAG = BitmapLayer.class.getName();
+	private Bitmap mBitmap;
+
+	public BitmapLayer() {
+		type = Layer.BITMAP;
+	}
+
+	public void setBitmap(Bitmap bitmap) {
+		mBitmap = bitmap;
+
+		vertexItems = VertexItem.pool.get();
+		short[] buf = vertexItems.vertices;
+		short size = (short) (Tile.SIZE * GLRenderer.COORD_SCALE);
+		short center = (short) (size >> 1);
+		short m = (short) (-(size >> 1));
+		short p = center;
+		short t = (8 * 256);
+
+		int pos = 0;
+		// top-left
+		buf[pos++] = 0;
+		buf[pos++] = 0;
+		buf[pos++] = m;
+		buf[pos++] = m;
+		buf[pos++] = 0;
+		buf[pos++] = 0;
+		// bot-left
+		buf[pos++] = 0;
+		buf[pos++] = size;
+		buf[pos++] = m;
+		buf[pos++] = p;
+		buf[pos++] = 0;
+		buf[pos++] = t;
+		// top-right
+		buf[pos++] = size;
+		buf[pos++] = 0;
+		buf[pos++] = p;
+		buf[pos++] = m;
+		buf[pos++] = t;
+		buf[pos++] = 0;
+		// bot-right
+		buf[pos++] = size;
+		buf[pos++] = size;
+		buf[pos++] = p;
+		buf[pos++] = p;
+		buf[pos++] = t;
+		buf[pos++] = t;
+
+		vertexItems.used = 24;
+
+		TextureItem ti = this.textures = new TextureItem(-1);
+		ti.ownBitmap = true;
+		ti.width = mBitmap.getWidth();
+		ti.height = mBitmap.getHeight();
+		ti.bitmap = mBitmap;
+		ti.vertices = TextureRenderer.INDICES_PER_SPRITE;
+
+		verticesCnt = 4;
+	}
+
+	@Override
+	public boolean prepare() {
+		return false;
+	}
+
+	@Override
+	protected void compile(ShortBuffer sbuf) {
+		if (mBitmap == null)
+			return;
+
+		super.compile(sbuf);
+
+		mBitmap.recycle();
+		mBitmap = null;
+		textures.bitmap = null;
+	}
+
+	@Override
+	protected void clear() {
+
+		if (mBitmap != null) {
+			mBitmap.recycle();
+			mBitmap = null;
+			textures.bitmap = null;
+		}
+
+		TextureItem.releaseTexture(textures);
+		textures = null;
+
+		VertexItem.pool.releaseAll(vertexItems);
+		vertexItems = null;
+	}
+}

src/org/oscim/renderer/layer/BitmapRenderer.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright 2012, 2013 Hannes Janetzek
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.oscim.renderer.layer;
+
+import static org.oscim.renderer.GLRenderer.COORD_SCALE;
+import static org.oscim.renderer.layer.TextureItem.TEXTURE_HEIGHT;
+
+import org.oscim.renderer.GLRenderer;
+import org.oscim.renderer.GLRenderer.Matrices;
+import org.oscim.renderer.GLState;
+import org.oscim.utils.GlUtils;
+
+import android.opengl.GLES20;
+
+/**
+ * @author Hannes Janetzek
+ */
+public final class BitmapRenderer {
+	private final static String TAG = BitmapRenderer.class.getName();
+	public final static boolean debug = true;
+
+	private static int mTextureProgram;
+	private static int hTextureMVMatrix;
+	private static int hTextureProjMatrix;
+	private static int hTextureVertex;
+	private static int hTextureScale;
+	private static int hTextureScreenScale;
+	private static int hTextureTexCoord;
+
+	public final static int INDICES_PER_SPRITE = 6;
+	final static int VERTICES_PER_SPRITE = 4;
+	final static int SHORTS_PER_VERTICE = 6;
+
+	static void init() {
+		mTextureProgram = GlUtils.createProgram(textVertexShader,
+				textFragmentShader);
+
+		hTextureMVMatrix = GLES20.glGetUniformLocation(mTextureProgram, "u_mv");
+		hTextureProjMatrix = GLES20.glGetUniformLocation(mTextureProgram, "u_proj");
+		hTextureScale = GLES20.glGetUniformLocation(mTextureProgram, "u_scale");
+		hTextureScreenScale = GLES20.glGetUniformLocation(mTextureProgram, "u_swidth");
+		hTextureVertex = GLES20.glGetAttribLocation(mTextureProgram, "vertex");
+		hTextureTexCoord = GLES20.glGetAttribLocation(mTextureProgram, "tex_coord");
+	}
+
+	public static Layer draw(Layer layer, float scale, Matrices m) {
+		GLState.test(false, false);
+		GLState.blend(true);
+
+		GLState.useProgram(mTextureProgram);
+
+		GLState.enableVertexArrays(hTextureTexCoord, hTextureVertex);
+
+		TextureLayer tl = (TextureLayer) layer;
+
+		if (tl.fixed)
+			GLES20.glUniform1f(hTextureScale, (float) Math.sqrt(scale));
+		else
+			GLES20.glUniform1f(hTextureScale, 1);
+
+		GLES20.glUniform1f(hTextureScreenScale, 1f / GLRenderer.screenWidth);
+
+		m.proj.setAsUniform(hTextureProjMatrix);
+
+		m.mvp.setAsUniform(hTextureMVMatrix);
+
+		GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, GLRenderer.mQuadIndicesID);
+
+		for (TextureItem ti = tl.textures; ti != null; ti = ti.next) {
+			//Log.d(TAG, "render texture " + ti.id);
+
+			GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, ti.id);
+			int maxVertices = GLRenderer.maxQuads * INDICES_PER_SPRITE;
+
+			// draw up to maxVertices in each iteration
+			for (int i = 0; i < ti.vertices; i += maxVertices) {
+				// to.offset * (24(shorts) * 2(short-bytes) / 6(indices) == 8)
+				int off = (ti.offset + i) * 8 + tl.offset;
+
+				GLES20.glVertexAttribPointer(hTextureVertex, 4,
+						GLES20.GL_SHORT, false, 12, off);
+
+				GLES20.glVertexAttribPointer(hTextureTexCoord, 2,
+						GLES20.GL_SHORT, false, 12, off + 8);
+
+				int numVertices = ti.vertices - i;
+				if (numVertices > maxVertices)
+					numVertices = maxVertices;
+
+				GLES20.glDrawElements(GLES20.GL_TRIANGLES, numVertices,
+						GLES20.GL_UNSIGNED_SHORT, 0);
+			}
+		}
+
+		GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, 0);
+
+		return layer.next;
+	}
+
+	//private final static double TEX_COORD_DIV_X = 1.0 / (TEXTURE_WIDTH * COORD_SCALE);
+	private final static double TEX_COORD_DIV_X = 1.0 / (TEXTURE_HEIGHT* COORD_SCALE);
+	private final static double TEX_COORD_DIV_Y = 1.0 / (TEXTURE_HEIGHT * COORD_SCALE);
+	private final static double COORD_DIV = 1.0 / GLRenderer.COORD_SCALE;
+
+	private final static String textVertexShader = ""
+			+ "precision mediump float; "
+			+ "attribute vec4 vertex;"
+			+ "attribute vec2 tex_coord;"
+			+ "uniform mat4 u_mv;"
+			+ "uniform mat4 u_proj;"
+			+ "uniform float u_scale;"
+			+ "uniform float u_swidth;"
+			+ "varying vec2 tex_c;"
+			+ "const vec2 div = vec2(" + TEX_COORD_DIV_X + "," + TEX_COORD_DIV_Y + ");"
+			+ "const float coord_scale = " + COORD_DIV + ";"
+			+ "void main() {"
+			+ "  gl_Position = u_mv * vec4(vertex.xy, 0.0, 1.0);"
+			+ "  tex_c = tex_coord * div;"
+			+ "}";
+
+	private final static String textFragmentShader = ""
+			+ "precision mediump float;"
+			+ "uniform sampler2D tex;"
+			+ "varying vec2 tex_c;"
+			+ "void main() {"
+			+ "   gl_FragColor = texture2D(tex, tex_c.xy);"
+			+ "}";
+}

src/org/oscim/renderer/layer/Layers.java

@@ -28,6 +28,7 @@ public class Layers {
 		LineTexRenderer.init();
 		PolygonRenderer.init();
 		TextureRenderer.init();
+		BitmapRenderer.init();
 
 		TextureItem.init(10);
 	}

src/org/oscim/renderer/layer/SymbolLayer.java

@@ -102,7 +102,7 @@ public final class SymbolLayer extends TextureLayer {
 		float x = 0;
 		float y = 0;
 
-		TextureItem to = TextureItem.pool.get();
+		TextureItem to = TextureItem.get(true);
 		textures = to;
 		mCanvas.setBitmap(to.bitmap);
 
@@ -138,7 +138,7 @@ public final class SymbolLayer extends TextureLayer {
 				offsetIndices = numIndices;
 				curIndices = 0;
 
-				to.next = TextureItem.pool.get();
+				to.next = TextureItem.get(true);
 				to = to.next;
 
 				mCanvas.setBitmap(to.bitmap);
@@ -247,7 +247,8 @@ public final class SymbolLayer extends TextureLayer {
 
 	@Override
 	protected void clear() {
-		TextureItem.pool.releaseAll(textures);
+		TextureItem.releaseAll(textures);
+
 		SymbolItem.pool.releaseAll(symbols);
 		VertexItem.pool.releaseAll(vertexItems);
 		textures = null;

src/org/oscim/renderer/layer/TextLayer.java

@@ -17,8 +17,6 @@ package org.oscim.renderer.layer;
 import static org.oscim.renderer.GLRenderer.COORD_SCALE;
 import static org.oscim.renderer.layer.TextureItem.TEXTURE_HEIGHT;
 import static org.oscim.renderer.layer.TextureItem.TEXTURE_WIDTH;
-
-
 import android.graphics.Canvas;
 public final class TextLayer extends TextureLayer {
 
@@ -91,7 +89,7 @@ public final class TextLayer extends TextureLayer {
 		float y = 0;
 		float yy;
 
-		TextureItem to = TextureItem.pool.get();
+		TextureItem to = TextureItem.get(true);
 		textures = to;
 		mCanvas.setBitmap(to.bitmap);
 
@@ -113,7 +111,7 @@ public final class TextLayer extends TextureLayer {
 					to.vertices = (short) (numIndices - offsetIndices);
 					offsetIndices = numIndices;
 
-					to.next = TextureItem.pool.get();
+					to.next = TextureItem.get(true);
 					to = to.next;
 
 					mCanvas.setBitmap(to.bitmap);
@@ -266,7 +264,7 @@ public final class TextLayer extends TextureLayer {
 
 	@Override
 	protected void clear() {
-		TextureItem.pool.releaseAll(textures);
+		TextureItem.releaseAll(textures);
 		TextItem.pool.releaseAll(labels);
 		VertexItem.pool.releaseAll(vertexItems);
 		textures = null;

src/org/oscim/renderer/layer/TextureItem.java

@@ -16,6 +16,7 @@ package org.oscim.renderer.layer;
 
 import java.util.ArrayList;
 
+import org.oscim.utils.GlUtils;
 import org.oscim.utils.pool.Inlist;
 import org.oscim.utils.pool.SyncPool;
 
@@ -44,15 +45,30 @@ public class TextureItem extends Inlist<TextureItem> {
 	// temporary Bitmap
 	public Bitmap bitmap;
 
+	boolean ownBitmap;
+
 	TextureItem(int id) {
 		this.id = id;
 	}
 
-	public final static SyncPool<TextureItem> pool = new SyncPool<TextureItem>() {
+	public synchronized static void releaseAll(TextureItem ti) {
+		pool.releaseAll(ti);
+	}
+
+	public synchronized static TextureItem get(boolean initBitmap) {
+		TextureItem ti = pool.get();
+		if (initBitmap) {
+			ti.bitmap = getBitmap();
+			ti.bitmap.eraseColor(Color.TRANSPARENT);
+		}
+		return ti;
+	}
+
+	private final static SyncPool<TextureItem> pool = new SyncPool<TextureItem>(20) {
 
 		@Override
 		public void init(int num) {
-			this.pool = null;
+			super.init(num);
 
 			int[] textureIds = new int[num];
 			GLES20.glGenTextures(num, textureIds, 0);
@@ -60,22 +76,10 @@ public class TextureItem extends Inlist<TextureItem> {
 			for (int i = 1; i < num; i++) {
 				initTexture(textureIds[i]);
 				TextureItem to = new TextureItem(textureIds[i]);
-
-				to.next = this.pool;
-				this.pool = to;
+				pool = Inlist.push(pool, to);
 			}
 		}
 
-		@Override
-		public TextureItem get() {
-			TextureItem it = super.get();
-
-			it.bitmap = TextureItem.getBitmap();
-			it.bitmap.eraseColor(Color.TRANSPARENT);
-
-			return it;
-		}
-
 		@Override
 		protected TextureItem createItem() {
 			return new TextureItem(-1);
@@ -83,10 +87,22 @@ public class TextureItem extends Inlist<TextureItem> {
 
 		@Override
 		protected void clearItem(TextureItem it) {
-			TextureItem.releaseBitmap(it);
+			//Log.d(TAG, it.ownBitmap + " " + (it.bitmap == null));
+			if (it.ownBitmap)
+				return;
+
+			releaseBitmap(it);
+		}
+
+		@Override
+		protected void freeItem(TextureItem it) {
+			it.width = -1;
+			it.height = -1;
+			releaseTexture(it);
 		}
 	};
 
+	private static ArrayList<Integer> mFreeTextures = new ArrayList<Integer>();
 	private static ArrayList<Bitmap> mBitmaps = new ArrayList<Bitmap>(10);
 
 	public final static int TEXTURE_WIDTH = 512;
@@ -94,6 +110,27 @@ public class TextureItem extends Inlist<TextureItem> {
 
 	private static int mBitmapFormat;
 	private static int mBitmapType;
+	private static int mTexCnt = 0;
+
+	static void releaseTexture(TextureItem it) {
+		synchronized (mFreeTextures) {
+			if (it.id >= 0) {
+				mFreeTextures.add(Integer.valueOf(it.id));
+				it.id = -1;
+			}
+		}
+	}
+
+	static void releaseBitmap(TextureItem it) {
+		synchronized (mBitmaps) {
+			if (it.bitmap != null) {
+				mBitmaps.add(it.bitmap);
+				it.bitmap = null;
+			}
+			it.ownBitmap = false;
+
+		}
+	}
 
 	/**
 	 * This function may only be used in GLRenderer Thread.
@@ -102,23 +139,32 @@ public class TextureItem extends Inlist<TextureItem> {
 	 */
 	public static void uploadTexture(TextureItem to) {
 
-		if (TextureRenderer.debug)
-			Log.d(TAG, "upload texture " + to.id);
+		// free unused textures, find a better place for this TODO
+		synchronized (mFreeTextures) {
+			int size = mFreeTextures.size();
+			int[] tmp = new int[size];
+			for (int i = 0; i < size; i++)
+				tmp[i] = mFreeTextures.get(i).intValue();
+			mFreeTextures.clear();
+			GLES20.glDeleteTextures(size, tmp, 0);
+		}
 
 		if (to.id < 0) {
+			mTexCnt++;
 			int[] textureIds = new int[1];
 			GLES20.glGenTextures(1, textureIds, 0);
 			to.id = textureIds[0];
 			initTexture(to.id);
-
 			if (TextureRenderer.debug)
-				Log.d(TAG, "new texture " + to.id);
+				Log.d(TAG, pool.getCount() + " " + pool.getFill()
+						+ " " + mTexCnt + " new texture " + to.id);
 		}
 
 		uploadTexture(to, to.bitmap, mBitmapFormat, mBitmapType,
 				TEXTURE_WIDTH, TEXTURE_HEIGHT);
 
-		TextureItem.releaseBitmap(to);
+		if (!to.ownBitmap)
+			TextureItem.releaseBitmap(to);
 	}
 
 	public static void uploadTexture(TextureItem to, Bitmap bitmap,
@@ -129,13 +175,21 @@ public class TextureItem extends Inlist<TextureItem> {
 			return;
 		}
 		GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, to.id);
-		if (to.width == w && to.height == h)
+
+		if (to.ownBitmap) {
+			GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
+
+		} else if (to.width == w && to.height == h) {
 			GLUtils.texSubImage2D(GLES20.GL_TEXTURE_2D, 0, 0, 0, bitmap, format, type);
-		else {
+
+		} else {
 			GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, format, bitmap, type, 0);
 			to.width = w;
 			to.height = h;
 		}
+
+		if (TextureRenderer.debug)
+			GlUtils.checkGlError(TAG);
 	}
 
 	static void initTexture(int id) {
@@ -166,6 +220,8 @@ public class TextureItem extends Inlist<TextureItem> {
 
 		mBitmapFormat = GLUtils.getInternalFormat(mBitmaps.get(0));
 		mBitmapType = GLUtils.getType(mBitmaps.get(0));
+
+		mTexCnt = num;
 	}
 
 	static Bitmap getBitmap() {
@@ -186,14 +242,4 @@ public class TextureItem extends Inlist<TextureItem> {
 			return mBitmaps.remove(size - 1);
 		}
 	}
-
-	static void releaseBitmap(TextureItem it) {
-		synchronized (mBitmaps) {
-
-			if (it.bitmap != null) {
-				mBitmaps.add(it.bitmap);
-				it.bitmap = null;
-			}
-		}
-	}
 }

src/org/oscim/renderer/layer/TextureRenderer.java

@@ -20,8 +20,8 @@ import static org.oscim.renderer.layer.TextureItem.TEXTURE_HEIGHT;
 import static org.oscim.renderer.layer.TextureItem.TEXTURE_WIDTH;
 
 import org.oscim.renderer.GLRenderer;
-import org.oscim.renderer.GLState;
 import org.oscim.renderer.GLRenderer.Matrices;
+import org.oscim.renderer.GLState;
 import org.oscim.utils.GlUtils;
 
 import android.opengl.GLES20;
@@ -30,6 +30,7 @@ import android.opengl.GLES20;
  * @author Hannes Janetzek
  */
 public final class TextureRenderer {
+	//private final static String TAG = TextureRenderer.class.getName();
 	public final static boolean debug = false;
 
 	private static int mTextureProgram;
@@ -78,15 +79,15 @@ public final class TextureRenderer {
 
 		GLES20.glBindBuffer(GLES20.GL_ELEMENT_ARRAY_BUFFER, GLRenderer.mQuadIndicesID);
 
-		for (TextureItem to = tl.textures; to != null; to = to.next) {
+		for (TextureItem ti = tl.textures; ti != null; ti = ti.next) {
 
-			GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, to.id);
+			GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, ti.id);
 			int maxVertices = GLRenderer.maxQuads * INDICES_PER_SPRITE;
 
 			// draw up to maxVertices in each iteration
-			for (int i = 0; i < to.vertices; i += maxVertices) {
+			for (int i = 0; i < ti.vertices; i += maxVertices) {
 				// to.offset * (24(shorts) * 2(short-bytes) / 6(indices) == 8)
-				int off = (to.offset + i) * 8 + tl.offset;
+				int off = (ti.offset + i) * 8 + tl.offset;
 
 				GLES20.glVertexAttribPointer(hTextureVertex, 4,
 						GLES20.GL_SHORT, false, 12, off);
@@ -94,7 +95,7 @@ public final class TextureRenderer {
 				GLES20.glVertexAttribPointer(hTextureTexCoord, 2,
 						GLES20.GL_SHORT, false, 12, off + 8);
 
-				int numVertices = to.vertices - i;
+				int numVertices = ti.vertices - i;
 				if (numVertices > maxVertices)
 					numVertices = maxVertices;
 

src/org/oscim/renderer/overlays/TextOverlay.java

@@ -33,7 +33,6 @@ import org.oscim.core.Tile;
 import org.oscim.graphics.Color;
 import org.oscim.graphics.Paint.Cap;
 import org.oscim.layers.tile.MapTile;
-import org.oscim.layers.tile.MapTile;
 import org.oscim.layers.tile.TileRenderLayer;
 import org.oscim.layers.tile.TileSet;
 import org.oscim.renderer.BufferObject;
@@ -61,7 +60,7 @@ import android.opengl.GLES20;
 import android.os.SystemClock;
 
 public class TextOverlay extends BasicOverlay {
-	//private final static String TAG = TextOverlay.class.getName();
+private final static String TAG = TextOverlay.class.getName();
 	private final static float MIN_CAPTION_DIST = 5;
 	private final static float MIN_WAY_DIST = 3;
 
@@ -179,7 +178,7 @@ public class TextOverlay extends BasicOverlay {
 			mRun = false;
 
 			if (updateLabels()) {
-				mMapView.redrawMap(true);
+				mMapView.render();
 			} else {
 				mRun = true;
 			}
@@ -695,14 +694,15 @@ public class TextOverlay extends BasicOverlay {
 
 			// set new TextLayer to be uploaded and rendered
 			layers.textureLayers = mNextLayer;
+			mNextLayer = null;
 
 			// make the 'labeled' MapPosition current
 			MapPosition tmp = mMapPosition;
 			mMapPosition = mTmpPos;
 			mTmpPos = tmp;
 
-			newData = true;
-			mNextLayer = null;
+			this.newData = true;
+
 			if (!(positionChanged || tilesChanged))
 				return;
 		}

src/org/oscim/utils/IOUtils.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010, 2011, 2012 mapsforge.org
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.oscim.utils;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * A utility class with IO-specific helper methods.
+ */
+public final class IOUtils {
+	private static final Logger LOGGER = Logger.getLogger(IOUtils.class.getName());
+
+	/**
+	 * Invokes the {@link Closeable#close()} method on the given object. If an {@link IOException} occurs during the
+	 * method call, it will be caught and logged on level {@link Level#WARNING}.
+	 * 
+	 * @param closeable
+	 *            the data source which should be closed (may be null).
+	 */
+	public static void closeQuietly(Closeable closeable) {
+		try {
+			if (closeable != null) {
+				closeable.close();
+			}
+		} catch (IOException e) {
+			LOGGER.log(Level.FINE, e.getMessage(), e);
+		}
+	}
+
+	private IOUtils() {
+		throw new IllegalStateException();
+	}
+}

src/org/oscim/utils/pool/SyncPool.java

@@ -21,26 +21,45 @@ public abstract class SyncPool<T extends Inlist<T>> {
 
 	protected T pool;
 
-	public SyncPool(){
+	public SyncPool() {
 		maxFill = 100;
+		fill = 0;
+		count = 0;
 	}
 
 	public SyncPool(int maxItemsInPool) {
 		maxFill = maxItemsInPool;
 		fill = 0;
+		count = 0;
+	}
+
+	public int getCount() {
+		return count;
+	}
+
+	public int getFill() {
+		return fill;
 	}
 
 	/**
 	 * @param items number of initial items
 	 */
-	public void init(int items){
+	public void init(int items) {
+		count = items;
+		fill = items;
+	}
+
+	/**
+	 * @param item set initial state
+	 */
+	protected void clearItem(T item) {
 
 	}
 
 	/**
 	 * @param item release resources
 	 */
-	protected void clearItem(T item) {
+	protected void freeItem(T item) {
 
 	}
 
@@ -59,7 +78,8 @@ public abstract class SyncPool<T extends Inlist<T>> {
 				item.next = pool;
 				pool = item;
 			}
-		} else{
+		} else {
+			freeItem(item);
 			count--;
 		}
 	}
@@ -68,69 +88,36 @@ public abstract class SyncPool<T extends Inlist<T>> {
 		if (item == null)
 			return;
 
-		if (fill > maxFill)
-		while (item != null) {
-			clearItem(item);
+		if (fill > maxFill) {
+			while (item != null) {
+				clearItem(item);
+				freeItem(item);
+				count--;
 
-			item = item.next;
-			count--;
-		}
-
-		if (item == null)
+				item = item.next;
+			}
 			return;
+		}
 
 		synchronized (this) {
 			while (item != null) {
 				T next = item.next;
+
 				clearItem(item);
+				fill++;
 
 				item.next = pool;
 				pool = item;
-				fill++;
 
 				item = next;
 			}
 		}
 	}
 
-	// remove 'item' from 'list' and add back to pool
-	public T release(T list, T item) {
-		if (item == null)
-			return list;
-
-		T ret = list;
-
-		clearItem(item);
-
-		if (item == list) {
-			ret = item.next;
-		} else {
-			for (T prev = list, it = list.next; it != null; it = it.next) {
-				if (it == item) {
-					prev.next = it.next;
-				}
-				prev = it;
-			}
-		}
-
-		if (fill < maxFill) {
-			synchronized (this) {
-				fill++;
-
-				item.next = pool;
-				pool = item;
-			}
-		} else{
-			count--;
-		}
-
-		return ret;
-	}
-
 	public T get() {
 
 		synchronized (this) {
-			if (pool == null){
+			if (pool == null) {
 				count++;
 				return createItem();
 			}

src/org/oscim/view/MapView.java

@@ -23,6 +23,7 @@ import org.oscim.core.MapPosition;
 import org.oscim.core.Tile;
 import org.oscim.database.MapOptions;
 import org.oscim.layers.Layer;
+import org.oscim.layers.tile.BitmapTileLayer;
 import org.oscim.layers.tile.MapTileLayer;
 import org.oscim.layers.tile.MapTileLoader;
 import org.oscim.overlay.BuildingOverlay;
@@ -152,6 +153,18 @@ public class MapView extends RelativeLayout {
 		return baseLayer;
 	}
 
+	public void setBackgroundMap(BitmapTileLayer tileLayer) {
+		mLayerManager.add(0, tileLayer);
+	}
+
+	public MapTileLayer setBaseMap(BitmapTileLayer tileLayer) {
+		mLayerManager.add(0, new MapEventLayer(this));
+		mLayerManager.add(1, tileLayer);
+
+		//mRotationEnabled = true;
+		return null;
+	}
+
 	void destroy() {
 		mLayerManager.destroy();
 	}