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50
51 package com.lowagie.text.pdf;
52
53 import java.io.ByteArrayOutputStream  ;
54 import java.io.IOException ;
55 import java.io.InputStream ;
56 import java.io.OutputStream ;
57
58 import com.lowagie.text.Image;
59
60
63
64 public class PdfImage extends PdfStream {
65
66 static final int TRANSFERSIZE = 4096;
67
69
70 protected PdfName name = null;
71
72
74
81
82 public PdfImage(Image image, String name, PdfIndirectReference maskRef) throws BadPdfFormatException {
83 super();
84 this.name = new PdfName(name);
85 put(PdfName.TYPE, PdfName.XOBJECT);
86 put(PdfName.SUBTYPE, PdfName.IMAGE);
87 put(PdfName.WIDTH, new PdfNumber(image.getWidth()));
88 put(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
89 if (image.getLayer() != null)
90 put(PdfName.OC, image.getLayer().getRef());
91 if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 0xff))
92 put(PdfName.IMAGEMASK, PdfBoolean.PDFTRUE);
93 if (maskRef != null) {
94 if (image.isSmask())
95 put(PdfName.SMASK, maskRef);
96 else
97 put(PdfName.MASK, maskRef);
98 }
99 if (image.isMask() && image.isInverted())
100 put(PdfName.DECODE, new PdfLiteral("[1 0]"));
101 if (image.isInterpolation())
102 put(PdfName.INTERPOLATE, PdfBoolean.PDFTRUE);
103 InputStream is = null;
104 try {
105
106 if (image.isImgRaw()) {
108 int colorspace = image.getColorspace();
110 int transparency[] = image.getTransparency();
111 if (transparency != null && !image.isMask() && maskRef == null) {
112 String s = "[";
113 for (int k = 0; k < transparency.length; ++k)
114 s += transparency[k] + " ";
115 s += "]";
116 put(PdfName.MASK, new PdfLiteral(s));
117 }
118 bytes = image.getRawData();
119 put(PdfName.LENGTH, new PdfNumber(bytes.length));
120 int bpc = image.getBpc();
121 if (bpc > 0xff) {
122 if (!image.isMask())
123 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
124 put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
125 put(PdfName.FILTER, PdfName.CCITTFAXDECODE);
126 int k = bpc - Image.CCITTG3_1D;
127 PdfDictionary decodeparms = new PdfDictionary();
128 if (k != 0)
129 decodeparms.put(PdfName.K, new PdfNumber(k));
130 if ((colorspace & Image.CCITT_BLACKIS1) != 0)
131 decodeparms.put(PdfName.BLACKIS1, PdfBoolean.PDFTRUE);
132 if ((colorspace & Image.CCITT_ENCODEDBYTEALIGN) != 0)
133 decodeparms.put(PdfName.ENCODEDBYTEALIGN, PdfBoolean.PDFTRUE);
134 if ((colorspace & Image.CCITT_ENDOFLINE) != 0)
135 decodeparms.put(PdfName.ENDOFLINE, PdfBoolean.PDFTRUE);
136 if ((colorspace & Image.CCITT_ENDOFBLOCK) != 0)
137 decodeparms.put(PdfName.ENDOFBLOCK, PdfBoolean.PDFFALSE);
138 decodeparms.put(PdfName.COLUMNS, new PdfNumber(image.getWidth()));
139 decodeparms.put(PdfName.ROWS, new PdfNumber(image.getHeight()));
140 put(PdfName.DECODEPARMS, decodeparms);
141 }
142 else {
143 switch(colorspace) {
144 case 1:
145 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
146 if (image.isInverted())
147 put(PdfName.DECODE, new PdfLiteral("[1 0]"));
148 break;
149 case 3:
150 put(PdfName.COLORSPACE, PdfName.DEVICERGB);
151 if (image.isInverted())
152 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0]"));
153 break;
154 case 4:
155 default:
156 put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
157 if (image.isInverted())
158 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
159 }
160 PdfDictionary additional = image.getAdditional();
161 if (additional != null)
162 putAll(additional);
163 if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 8))
164 remove(PdfName.COLORSPACE);
165 put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.getBpc()));
166 if (image.isDeflated())
167 put(PdfName.FILTER, PdfName.FLATEDECODE);
168 else {
169 flateCompress();
170 }
171 }
172 return;
173 }
174
175 String errorID;
177 if (image.getRawData() == null){
178 is = image.getUrl().openStream();
179 errorID = image.getUrl().toString();
180 }
181 else{
182 is = new java.io.ByteArrayInputStream (image.getRawData());
183 errorID = "Byte array";
184 }
185 switch(image.type()) {
186 case Image.JPEG:
187 put(PdfName.FILTER, PdfName.DCTDECODE);
188 switch(image.getColorspace()) {
189 case 1:
190 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
191 break;
192 case 3:
193 put(PdfName.COLORSPACE, PdfName.DEVICERGB);
194 break;
195 default:
196 put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
197 if (image.isInverted()) {
198 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
199 }
200 }
201 put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
202 if (image.getRawData() != null){
203 bytes = image.getRawData();
204 put(PdfName.LENGTH, new PdfNumber(bytes.length));
205 return;
206 }
207 streamBytes = new ByteArrayOutputStream ();
208 transferBytes(is, streamBytes, -1);
209 break;
210 default:
211 throw new BadPdfFormatException(errorID + " is an unknown Image format.");
212 }
213 put(PdfName.LENGTH, new PdfNumber(streamBytes.size()));
214 }
215 catch(IOException ioe) {
216 throw new BadPdfFormatException(ioe.getMessage());
217 }
218 finally {
219 if (is != null) {
220 try{
221 is.close();
222 }
223 catch (Exception ee) {
224 }
226 }
227 }
228 }
229
230
235
236 public PdfName name() {
237 return name;
238 }
239
240 static void transferBytes(InputStream in, OutputStream out, int len) throws IOException {
241 byte buffer[] = new byte[TRANSFERSIZE];
242 if (len < 0)
243 len = 0x7ffffff;
244 int size;
245 while (len != 0) {
246 size = in.read(buffer, 0, Math.min(len, TRANSFERSIZE));
247 if (size < 0)
248 return;
249 out.write(buffer, 0, size);
250 len -= size;
251 }
252 }
253
254 protected void importAll(PdfImage dup) {
255 name = dup.name;
256 compressed = dup.compressed;
257 streamBytes = dup.streamBytes;
258 bytes = dup.bytes;
259 hashMap = dup.hashMap;
260 }
261 }
262 |
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