Android-builders-club/OsmAnd
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

rebase from master before pushing to github

Browse source 
Signed-off-by: yvecai <yvecai@gmail.com>
This commit is contained in:
yvecai 2012-02-06 20:59:37 +01:00 committed by Jindřich Makovička
parent 4fa76996f2
commit 8362f07ff1
1 changed files with 105 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

137
OsmAnd/src/net/osmand/plus/SQLiteTileSource.java
View file

@ -19,7 +19,10 @@ import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDiskIOException;
import android.database.sqlite.SQLiteStatement;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Rect;
public class SQLiteTileSource implements ITileSource {
@ -34,6 +37,7 @@ public class SQLiteTileSource implements ITileSource {
private final File file;
private int minZoom = 1;
private int maxZoom = 17;
private int baseZoom = 17; //Default base zoom
public SQLiteTileSource(File f, List<TileSourceTemplate> toFindUrl){
this.file = f;
@ -138,8 +142,9 @@ public class SQLiteTileSource implements ITileSource {
try {
long z;
z = db.compileStatement("SELECT minzoom FROM info").simpleQueryForLong(); //$NON-NLS-1$
if (z < 17)
maxZoom = 17 - (int)z;
if (z < 17 && z >= 0)
baseZoom = 17 - (int)z; // sqlite base zoom, =11 for SRTM hillshade
maxZoom = 17; // Cheat to have tiles request even if zoom level not in sqlite
z = db.compileStatement("SELECT maxzoom FROM info").simpleQueryForLong(); //$NON-NLS-1$
if (z < 17)
minZoom = 17 - (int)z;
@ -154,14 +159,15 @@ public class SQLiteTileSource implements ITileSource {
if(db == null){
return false;
}
Cursor cursor = db.rawQuery("SELECT 1 FROM tiles WHERE z = ? LIMIT 1", new String[] {(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
try {
boolean e = cursor.moveToFirst();
cursor.close();
return e;
} catch (SQLiteDiskIOException e) {
return false;
}
return true; // Cheat to test resampling /o modifying ressourceManager
// Cursor cursor = db.rawQuery("SELECT 1 FROM tiles WHERE z = ? LIMIT 1", new String[] {(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
// try {
// boolean e = cursor.moveToFirst();
// cursor.close();
// return e;
// } catch (SQLiteDiskIOException e) {
// return false;
// }
}
public boolean exists(int x, int y, int zoom) {
@ -169,18 +175,19 @@ public class SQLiteTileSource implements ITileSource {
if(db == null){
return false;
}
long time = System.currentTimeMillis();
Cursor cursor = db.rawQuery("SELECT 1 FROM tiles WHERE x = ? AND y = ? AND z = ?", new String[] {x+"", y+"",(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
try {
boolean e = cursor.moveToFirst();
cursor.close();
if (log.isDebugEnabled()) {
log.debug("Checking tile existance x = " + x + " y = " + y + " z = " + zoom + " for " + (System.currentTimeMillis() - time)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
}
return e;
} catch (SQLiteDiskIOException e) {
return false;
}
return true; // Cheat to test resampling /o modifying ressourceManager
// long time = System.currentTimeMillis();
// Cursor cursor = db.rawQuery("SELECT 1 FROM tiles WHERE x = ? AND y = ? AND z = ?", new String[] {x+"", y+"",(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
// try {
// boolean e = cursor.moveToFirst();
// cursor.close();
// if (log.isDebugEnabled()) {
// log.debug("Checking tile existance x = " + x + " y = " + y + " z = " + zoom + " for " + (System.currentTimeMillis() - time)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
// }
// return e;
// } catch (SQLiteDiskIOException e) {
// return false;
// }
}
public boolean isLocked() {
@ -191,23 +198,87 @@ public class SQLiteTileSource implements ITileSource {
return db.isDbLockedByOtherThreads();
}
private Bitmap getMetaTile(int x, int y, int zoom) {
// return a 3x3 metatile (768x768 px) around a given tile
SQLiteDatabase db = getDatabase();
if(db == null){
return null;
}
Bitmap stitchedImage = Bitmap.createBitmap(256*3, 256*3, Config.ARGB_8888);
Canvas canvas = new Canvas(stitchedImage);
for (int i = -1 ; i < 2 ; i++ ) {
for (int j = -1 ; j < 2 ; j++ ) {
Cursor cursor = db.rawQuery(
"SELECT image FROM tiles WHERE x = ? AND y = ? AND z = ?",
new String[] {x+i+"", y+j+"",(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
byte[] blob = null;
if(cursor.moveToFirst()) {
blob = cursor.getBlob(0);
}
cursor.close();
if(blob != null){
Bitmap Tile = BitmapFactory.decodeByteArray(blob, 0, blob.length);
blob = null;
System.gc();
Rect src = new Rect(0, 0, 256, 256);
Rect dst = new Rect((i+1)*256,(j+1)*256 , (i+2)*256, (j+2)*256);
canvas.drawBitmap(Tile, src, dst, null);
Tile.recycle();
} else {
return null;
}
}
}
return Bitmap.createBitmap(stitchedImage,250,250,268,268); // return a 256x256 tile + 6px margin
}
public Bitmap getImage(int x, int y, int zoom) {
SQLiteDatabase db = getDatabase();
if(db == null){
return null;
}
Cursor cursor = db.rawQuery("SELECT image FROM tiles WHERE x = ? AND y = ? AND z = ?", new String[] {x+"", y+"",(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
byte[] blob = null;
if(cursor.moveToFirst()) {
blob = cursor.getBlob(0);
}
cursor.close();
if(blob != null){
return BitmapFactory.decodeByteArray(blob, 0, blob.length);
}
return null;
}
if ( zoom <= baseZoom) {
Cursor cursor = db.rawQuery("SELECT image FROM tiles WHERE x = ? AND y = ? AND z = ?", new String[] {x+"", y+"",(17 - zoom)+""}); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$//$NON-NLS-4$
byte[] blob = null;
if(cursor.moveToFirst()) {
blob = cursor.getBlob(0);
}
cursor.close();
if(blob != null){
return BitmapFactory.decodeByteArray(blob, 0, blob.length);
}
return null;
} else {
int n = zoom - baseZoom;
int base_xtile = (int)(x / Math.pow(2,n));
int base_ytile = (int)(y / Math.pow(2,n));
Bitmap metaTile = getMetaTile(base_xtile, base_ytile, baseZoom);
if(metaTile != null){
// in tile space:
int scaledSize= (int)(256/Math.pow(2,n));
int offset_x= (int)((x - base_xtile*Math.pow(2,n)));
int offset_y= (int)((y - base_ytile*Math.pow(2,n)));
int delta_px = (int)(scaledSize*offset_x);
int delta_py = (int)(scaledSize*offset_y);
Bitmap xn = Bitmap.createBitmap(metaTile,
delta_px, //(+6)
delta_py, //(+6)
scaledSize+12,
scaledSize+12);
metaTile.recycle();
int scaleto = (int)(256+12*Math.pow(2,n));
Bitmap scaled = Bitmap.createScaledBitmap(xn,scaleto,scaleto,true);
xn.recycle();
System.gc();
return Bitmap.createBitmap(scaled,(int)(6*Math.pow(2,n)),(int)(6*Math.pow(2,n)),256,256);
}
return null;
}
}
public ITileSource getBase() {
return base;
}