Source Code Cross Referenced for JPEGBitmap.java in  » Ajax » Laszlo-4.0.10 » org » openlaszlo » iv » flash » api » image » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.iv.flash.api.image 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: JPEGBitmap.java,v 1.5 2002/02/25 19:07:04 ptalbot Exp $
003:         *
004:         * ==========================================================================
005:         *
006:         * The JGenerator Software License, Version 1.0
007:         *
008:         * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
009:         *
010:         * Redistribution and use in source and binary forms, with or without
011:         * modification, are permitted provided that the following conditions are met:
012:         *
013:         * 1. Redistributions of source code must retain the above copyright
014:         *    notice, this list of conditions and the following disclaimer.
015:         *
016:         * 2. Redistributions in binary form must reproduce the above copyright
017:         *    notice, this list of conditions and the following disclaimer in
018:         *    the documentation and/or other materials provided with the
019:         *    distribution.
020:         *
021:         * 3. The end-user documentation included with the redistribution, if
022:         *    any, must include the following acknowlegement:
023:         *    "This product includes software developed by Dmitry Skavish
024:         *     (skavish@usa.net, http://www.flashgap.com/)."
025:         *    Alternately, this acknowlegement may appear in the software itself,
026:         *    if and wherever such third-party acknowlegements normally appear.
027:         *
028:         * 4. The name "The JGenerator" must not be used to endorse or promote
029:         *    products derived from this software without prior written permission.
030:         *    For written permission, please contact skavish@usa.net.
031:         *
032:         * 5. Products derived from this software may not be called "The JGenerator"
033:         *    nor may "The JGenerator" appear in their names without prior written
034:         *    permission of Dmitry Skavish.
035:         *
036:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039:         * DISCLAIMED.  IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
040:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047:         * SUCH DAMAGE.
048:         *
049:         */
050:
051:        package org.openlaszlo.iv.flash.api.image;
052:
053:        import java.io.*;
054:        import java.awt.color.ColorSpace;
055:        import java.awt.image.ColorConvertOp;
056:        import java.awt.image.BufferedImage;
057:        import java.awt.image.Raster;
058:        import java.awt.geom.*;
059:        import org.openlaszlo.iv.flash.url.*;
060:        import org.openlaszlo.iv.flash.util.*;
061:        import org.openlaszlo.iv.flash.parser.*;
062:        import org.openlaszlo.iv.flash.api.*;
063:
064:        import com.sun.image.codec.jpeg.*;
065:
066:        public class JPEGBitmap extends Bitmap {
067:
068:            private static final String jpegTablesName = "%JPEGTABLES$JPEGTABLES%";
069:            private DataMarker data;
070:            private FlashItem jpegTables;
071:            private Rectangle2D bounds;
072:            private JPEGInfo info;
073:
074:            /** true - ready to be generated, false - not ready, has to be converted */
075:            private boolean readyToGen;
076:
077:            public JPEGBitmap() {
078:            }
079:
080:            public void setData(DataMarker data) {
081:                this .data = data;
082:                this .bounds = null;
083:                this .readyToGen = false;
084:            }
085:
086:            public static Bitmap parse(Parser p) {
087:                JPEGBitmap o = new JPEGBitmap();
088:                o.setID(p.getUWord());
089:                o.data = new DataMarker(p.getBuf(), p.getPos(), p
090:                        .getTagEndPos());
091:                o.readyToGen = true;
092:                o.tagCode = p.getTagCode();
093:                if (o.tagCode == Tag.DEFINEBITS) {
094:                    o.jpegTables = p.getDefFromLibrary(jpegTablesName);
095:                }
096:                return o;
097:            }
098:
099:            public static void parseJPegTables(Parser p) {
100:                JPEGTables tables = new JPEGTables();
101:                tables.setData(new DataMarker(p.getBuf(), p.getPos(), p
102:                        .getTagEndPos())); // 02/09/01 by sd
103:                tables.setName(jpegTablesName);
104:                p.addDefToLibrary(jpegTablesName, tables);
105:            }
106:
107:            public int getSize() {
108:                return data.buffer.length;
109:            }
110:
111:            public Rectangle2D getBounds() {
112:                if (bounds != null)
113:                    return bounds;
114:                parseData();
115:                return bounds;
116:            }
117:
118:            public void collectDeps(DepsCollector dc) {
119:
120:                /* LASZLO we never output JPEGTABLES tags
121:                if( jpegTables != null ) {
122:                    dc.addDep(jpegTables);
123:                }
124:                 */
125:            }
126:
127:            public static JPEGBitmap newJPEGBitmap(String fileName)
128:                    throws IVException, IOException {
129:                return newJPEGBitmap(IVUrl.newUrl(fileName));
130:            }
131:
132:            public static JPEGBitmap newJPEGBitmap(IVUrl url)
133:                    throws IVException, IOException {
134:                return newJPEGBitmap(Util.readUrl(url));
135:            }
136:
137:            public static JPEGBitmap newJPEGBitmap(FlashBuffer fob)
138:                    throws IVException {
139:                JPEGBitmap bitmap = new JPEGBitmap();
140:                bitmap.setTag(Tag.DEFINEBITSJPEG2);
141:                DataMarker data = new DataMarker(fob.getBuf(), 0, fob.getSize());
142:                bitmap.setData(data);
143:                //bitmap.parseData();
144:                return bitmap;
145:            }
146:
147:            private void parseData() {
148:                info = JPEGHelper.getInfo(data.buffer, data.start, data.end);
149:                bounds = GeomHelper.newRectangle(0, 0, info.width, info.height);
150:
151:                // check if it's not progressive jpeg or gray
152:                if (info.type == 0 && info.num_comps == 3) {
153:                    readyToGen = true;
154:                } else {
155:                    readyToGen = false;
156:                }
157:            }
158:
159:            /**
160:             * Reencode the image with specified quality
161:             * <P>
162:             * As a side effect this method converts from progressive jpeg
163:             * (if any) to regular
164:             *
165:             * @param quality quality of new jpeg: 0..1, with 1 being highest quality
166:             */
167:            public void processImage(float quality) {
168:                try {
169:                    Log.logRB(Resource.REENCODINGJPEG,
170:                            new Object[] { new Float(quality) });
171:                    int size = data.end - data.start;
172:                    InputStream is = data.getInputStream();
173:                    JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(is);
174:                    BufferedImage image = decoder.decodeAsBufferedImage();
175:
176:                    info = JPEGHelper
177:                            .getInfo(data.buffer, data.start, data.end);
178:                    // Need to color convert from greyscale to RGB
179:                    if (info.num_comps != 3) {
180:                        ColorConvertOp op = new ColorConvertOp(image
181:                                .getColorModel().getColorSpace(), ColorSpace
182:                                .getInstance(ColorSpace.CS_LINEAR_RGB), null);
183:                        image = op.filter(image, null);
184:                    }
185:
186:                    bounds = GeomHelper.newRectangle(0, 0, image.getWidth(),
187:                            image.getHeight());
188:
189:                    FlashBuffer fob = new FlashBuffer(size);
190:                    OutputStream os = fob.getOutputStream();
191:
192:                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
193:                    JPEGEncodeParam params = encoder
194:                            .getDefaultJPEGEncodeParam(image);
195:                    params.setQuality(quality, true);
196:                    encoder.encode(image, params);
197:
198:                    data.buffer = fob.getBuf();
199:                    data.end = fob.getSize();
200:                    data.start = 0;
201:                    readyToGen = true;
202:                } catch (IOException e) {
203:                    Log.log(e);
204:                }
205:            }
206:
207:            /**
208:             * Rescales this image with specified width, height and quality
209:             *
210:             * @param width   new width
211:             * @param height  new height
212:             * @param quality new quality
213:             */
214:            public void rescale(int width, int height, float quality) {
215:                try {
216:                    Log.logRB(Resource.RESCALINGJPEG, new Object[] {
217:                            new Integer(width), new Integer(height),
218:                            new Float(quality) });
219:                    int size = data.end - data.start;
220:                    InputStream is = data.getInputStream();
221:                    JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(is);
222:                    BufferedImage image = decoder.decodeAsBufferedImage();
223:                    image = (BufferedImage) image.getScaledInstance(width,
224:                            height, java.awt.Image.SCALE_SMOOTH);
225:
226:                    bounds = GeomHelper.newRectangle(0, 0, image.getWidth(),
227:                            image.getHeight());
228:
229:                    FlashBuffer fob = new FlashBuffer(size);
230:                    OutputStream os = fob.getOutputStream();
231:
232:                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(os);
233:                    JPEGEncodeParam params = encoder
234:                            .getDefaultJPEGEncodeParam(image);
235:                    params.setQuality(quality, true);
236:                    encoder.encode(image, params);
237:
238:                    data.buffer = fob.getBuf();
239:                    data.end = fob.getSize();
240:                    data.start = 0;
241:                    readyToGen = true;
242:                } catch (IOException e) {
243:                    Log.log(e);
244:                }
245:            }
246:
247:            /*    private GraphicsConfiguration gr_config = null;
248:             private static GraphicsConfiguration getGraphicsConfiguration() {
249:             if( gr_config == null ) {
250:             GraphicsEnvironment gr_env = GraphicsEnvironment.getLocalGraphicsEnvironment();
251:             GraphicsDevice gr_device = gr_env.getDefaultScreenDevice();
252:             gr_config = gr_device.getDefaultConfiguration();
253:             }
254:             return gr_config;
255:             }
256:             */
257:            public void write(FlashOutput fob) {
258:                if (!readyToGen) {
259:                    processImage(.75f);
260:                }
261:                // LASZLO, turn DEFINEBITS into DEFINTEBITSJPEG2
262:                if (tagCode == Tag.DEFINEBITS) {
263:                    JPEGTables tables = (JPEGTables) jpegTables;
264:                    fob.writeTag(Tag.DEFINEBITSJPEG2, 2 + data.length()
265:                            + tables.getDataLength());
266:                    fob.writeDefID(this );
267:                    tables.writeData(fob);
268:                } else {
269:                    fob.writeTag(tagCode, 2 + data.length());
270:                    fob.writeDefID(this );
271:                }
272:                data.write(fob);
273:            }
274:
275:            public void printContent(PrintStream out, String indent) {
276:                out.println(indent + "JPEGBitmap(" + Tag.tagNames[tagCode]
277:                        + "): id=" + getID() + " size=" + data.length()
278:                        + " name='" + getName() + "'");
279:            }
280:
281:            protected FlashItem copyInto(FlashItem item, ScriptCopier copier) {
282:                super .copyInto(item, copier);
283:                ((JPEGBitmap) item).data = (DataMarker) data.getCopy();
284:                ((JPEGBitmap) item).jpegTables = jpegTables;
285:                ((JPEGBitmap) item).bounds = (Rectangle2D) bounds.clone();
286:                ((JPEGBitmap) item).readyToGen = readyToGen;
287:                ((JPEGBitmap) item).info = info != null ? info.getCopy() : null;
288:                return item;
289:            }
290:
291:            public FlashItem getCopy(ScriptCopier copier) {
292:                return copyInto(new JPEGBitmap(), copier);
293:            }
294:
295:            public static class JPEGInfo {
296:                public int type; // 0 - regular, 1 - progressive
297:                public int width;
298:                public int height;
299:                public int num_comps;
300:                public int precision;
301:
302:                public JPEGInfo getCopy() {
303:                    JPEGInfo info = new JPEGInfo();
304:                    info.type = type;
305:                    info.width = width;
306:                    info.height = height;
307:                    info.num_comps = num_comps;
308:                    info.precision = precision;
309:                    return info;
310:                }
311:            }
312:
313:            private static class JPEGTables extends FlashDef {
314:                DataMarker data;
315:
316:                public JPEGTables() {
317:                }
318:
319:                public int getTag() {
320:                    return Tag.JPEGTABLES;
321:                }
322:
323:                public void setData(DataMarker data) {
324:                    this .data = data;
325:                }
326:
327:                public void write(FlashOutput fob) {
328:                    fob.writeTag(Tag.JPEGTABLES, data.length());
329:                    data.write(fob);
330:                }
331:
332:                public void writeData(FlashOutput fob) {
333:                    data.write(fob);
334:                }
335:
336:                public int getDataLength() {
337:                    return data.length();
338:                }
339:            }
340:
341:        }
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