com.drewnoakes
metadata-extractor
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/captcha/GifCaptcha.java b/hutool-swing/src/main/java/cn/hutool/swing/captcha/GifCaptcha.java
index 4781264ad..1a78b45f1 100755
--- a/hutool-swing/src/main/java/cn/hutool/swing/captcha/GifCaptcha.java
+++ b/hutool-swing/src/main/java/cn/hutool/swing/captcha/GifCaptcha.java
@@ -1,9 +1,9 @@
package cn.hutool.swing.captcha;
-import cn.hutool.swing.img.gif.AnimatedGifEncoder;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.RandomUtil;
+import com.madgag.gif.fmsware.AnimatedGifEncoder;
import java.awt.AlphaComposite;
import java.awt.Color;
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/AnimatedGifEncoder.java b/hutool-swing/src/main/java/cn/hutool/swing/img/gif/AnimatedGifEncoder.java
deleted file mode 100755
index 30f7f3b6b..000000000
--- a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/AnimatedGifEncoder.java
+++ /dev/null
@@ -1,583 +0,0 @@
-package cn.hutool.swing.img.gif;
-
-import java.awt.Color;
-import java.awt.Graphics2D;
-import java.awt.image.BufferedImage;
-import java.awt.image.DataBufferByte;
-import java.io.BufferedOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-
-/**
- * 动态GIF动画生成器，可生成一个或多个帧的GIF。
- *
- *
- * Example:
- * AnimatedGifEncoder e = new AnimatedGifEncoder();
- * e.start(outputFileName);
- * e.setDelay(1000); // 1 frame per sec
- * e.addFrame(image1);
- * e.addFrame(image2);
- * e.finish();
- *
- *
- * 来自：https://github.com/rtyley/animated-gif-lib-for-java
- *
- * @author Kevin Weiner, FM Software
- * @version 1.03 November 2003
- * @since 5.3.8
- */
-public class AnimatedGifEncoder {
-
- protected int width; // image size
- protected int height;
- protected Color transparent = null; // transparent color if given
- protected boolean transparentExactMatch = false; // transparent color will be found by looking for the closest color
- // or for the exact color if transparentExactMatch == true
- protected Color background = null; // background color if given
- protected int transIndex; // transparent index in color table
- protected int repeat = -1; // no repeat
- protected int delay = 0; // frame delay (hundredths)
- protected boolean started = false; // ready to output frames
- protected OutputStream out;
- protected BufferedImage image; // current frame
- protected byte[] pixels; // BGR byte array from frame
- protected byte[] indexedPixels; // converted frame indexed to palette
- protected int colorDepth; // number of bit planes
- protected byte[] colorTab; // RGB palette
- protected boolean[] usedEntry = new boolean[256]; // active palette entries
- protected int palSize = 7; // color table size (bits-1)
- protected int dispose = -1; // disposal code (-1 = use default)
- protected boolean closeStream = false; // close stream when finished
- protected boolean firstFrame = true;
- protected boolean sizeSet = false; // if false, get size from first frame
- protected int sample = 10; // default sample interval for quantizer
-
- /**
- * 设置每一帧的间隔时间
- * Sets the delay time between each frame, or changes it
- * for subsequent frames (applies to last frame added).
- *
- * @param ms 间隔时间，单位毫秒
- */
- public void setDelay(final int ms) {
- delay = Math.round(ms / 10.0f);
- }
-
- /**
- * Sets the GIF frame disposal code for the last added frame
- * and any subsequent frames. Default is 0 if no transparent
- * color has been set, otherwise 2.
- *
- * @param code int disposal code.
- */
- public void setDispose(final int code) {
- if (code >= 0) {
- dispose = code;
- }
- }
-
- /**
- * Sets the number of times the set of GIF frames
- * should be played. Default is 1; 0 means play
- * indefinitely. Must be invoked before the first
- * image is added.
- *
- * @param iter int number of iterations.
- */
- public void setRepeat(final int iter) {
- if (iter >= 0) {
- repeat = iter;
- }
- }
-
- /**
- * Sets the transparent color for the last added frame
- * and any subsequent frames.
- * Since all colors are subject to modification
- * in the quantization process, the color in the final
- * palette for each frame closest to the given color
- * becomes the transparent color for that frame.
- * May be set to null to indicate no transparent color.
- *
- * @param c Color to be treated as transparent on display.
- */
- public void setTransparent(final Color c) {
- setTransparent(c, false);
- }
-
- /**
- * Sets the transparent color for the last added frame
- * and any subsequent frames.
- * Since all colors are subject to modification
- * in the quantization process, the color in the final
- * palette for each frame closest to the given color
- * becomes the transparent color for that frame.
- * If exactMatch is set to true, transparent color index
- * is search with exact match, and not looking for the
- * closest one.
- * May be set to null to indicate no transparent color.
- *
- * @param c Color to be treated as transparent on display.
- * @param exactMatch If exactMatch is set to true, transparent color index is search with exact match
- */
- public void setTransparent(final Color c, final boolean exactMatch) {
- transparent = c;
- transparentExactMatch = exactMatch;
- }
-
-
- /**
- * Sets the background color for the last added frame
- * and any subsequent frames.
- * Since all colors are subject to modification
- * in the quantization process, the color in the final
- * palette for each frame closest to the given color
- * becomes the background color for that frame.
- * May be set to null to indicate no background color
- * which will default to black.
- *
- * @param c Color to be treated as background on display.
- */
- public void setBackground(final Color c) {
- background = c;
- }
-
- /**
- * Adds next GIF frame. The frame is not written immediately, but is
- * actually deferred until the next frame is received so that timing
- * data can be inserted. Invoking {@code finish()} flushes all
- * frames. If {@code setSize} was not invoked, the size of the
- * first image is used for all subsequent frames.
- *
- * @param im BufferedImage containing frame to write.
- * @return true if successful.
- */
- public boolean addFrame(final BufferedImage im) {
- if ((im == null) || !started) {
- return false;
- }
- boolean ok = true;
- try {
- if (!sizeSet) {
- // use first frame's size
- setSize(im.getWidth(), im.getHeight());
- }
- image = im;
- getImagePixels(); // convert to correct format if necessary
- analyzePixels(); // build color table & map pixels
- if (firstFrame) {
- writeLSD(); // logical screen descriptior
- writePalette(); // global color table
- if (repeat >= 0) {
- // use NS app extension to indicate reps
- writeNetscapeExt();
- }
- }
- writeGraphicCtrlExt(); // write graphic control extension
- writeImageDesc(); // image descriptor
- if (!firstFrame) {
- writePalette(); // local color table
- }
- writePixels(); // encode and write pixel data
- firstFrame = false;
- } catch (final IOException e) {
- ok = false;
- }
-
- return ok;
- }
-
- /**
- * Flushes any pending data and closes output file.
- * If writing to an OutputStream, the stream is not
- * closed.
- *
- * @return is ok
- */
- public boolean finish() {
- if (!started) return false;
- boolean ok = true;
- started = false;
- try {
- out.write(0x3b); // gif trailer
- out.flush();
- if (closeStream) {
- out.close();
- }
- } catch (final IOException e) {
- ok = false;
- }
-
- // reset for subsequent use
- transIndex = 0;
- out = null;
- image = null;
- pixels = null;
- indexedPixels = null;
- colorTab = null;
- closeStream = false;
- firstFrame = true;
-
- return ok;
- }
-
- /**
- * Sets frame rate in frames per second. Equivalent to
- * {@code setDelay(1000/fps)}.
- *
- * @param fps float frame rate (frames per second)
- */
- public void setFrameRate(final float fps) {
- if (fps != 0f) {
- delay = Math.round(100f / fps);
- }
- }
-
- /**
- * Sets quality of color quantization (conversion of images
- * to the maximum 256 colors allowed by the GIF specification).
- * Lower values (minimum = 1) produce better colors, but slow
- * processing significantly. 10 is the default, and produces
- * good color mapping at reasonable speeds. Values greater
- * than 20 do not yield significant improvements in speed.
- *
- * @param quality int greater than 0.
- */
- public void setQuality(int quality) {
- if (quality < 1) quality = 1;
- sample = quality;
- }
-
- /**
- * Sets the GIF frame size. The default size is the
- * size of the first frame added if this method is
- * not invoked.
- *
- * @param w int frame width.
- * @param h int frame width.
- */
- public void setSize(final int w, final int h) {
- if (started && !firstFrame) return;
- width = w;
- height = h;
- if (width < 1) width = 320;
- if (height < 1) height = 240;
- sizeSet = true;
- }
-
- /**
- * Initiates GIF file creation on the given stream. The stream
- * is not closed automatically.
- *
- * @param os OutputStream on which GIF images are written.
- * @return false if initial write failed.
- */
- public boolean start(final OutputStream os) {
- if (os == null) return false;
- boolean ok = true;
- closeStream = false;
- out = os;
- try {
- writeString("GIF89a"); // header
- } catch (final IOException e) {
- ok = false;
- }
- return started = ok;
- }
-
- /**
- * Initiates writing of a GIF file with the specified name.
- *
- * @param file String containing output file name.
- * @return false if open or initial write failed.
- */
- public boolean start(final String file) {
- boolean ok;
- try {
- out = new BufferedOutputStream(Files.newOutputStream(Paths.get(file)));
- ok = start(out);
- closeStream = true;
- } catch (final IOException e) {
- ok = false;
- }
- return started = ok;
- }
-
- /**
- * @return 是否开始
- */
- public boolean isStarted() {
- return started;
- }
-
- /**
- * Analyzes image colors and creates color map.
- */
- protected void analyzePixels() {
- final int len = pixels.length;
- final int nPix = len / 3;
- indexedPixels = new byte[nPix];
- final NeuQuant nq = new NeuQuant(pixels, len, sample);
- // initialize quantizer
- colorTab = nq.process(); // create reduced palette
- // convert map from BGR to RGB
- for (int i = 0; i < colorTab.length; i += 3) {
- final byte temp = colorTab[i];
- colorTab[i] = colorTab[i + 2];
- colorTab[i + 2] = temp;
- usedEntry[i / 3] = false;
- }
- // map image pixels to new palette
- int k = 0;
- for (int i = 0; i < nPix; i++) {
- final int index =
- nq.map(pixels[k++] & 0xff,
- pixels[k++] & 0xff,
- pixels[k++] & 0xff);
- usedEntry[index] = true;
- indexedPixels[i] = (byte) index;
- }
- pixels = null;
- colorDepth = 8;
- palSize = 7;
- // get the closest match to transparent color if specified
- if (transparent != null) {
- transIndex = transparentExactMatch ? findExact(transparent) : findClosest(transparent);
- }
- }
-
- /**
- * Returns index of palette color closest to c
- *
- * @param c Color
- * @return index
- */
- protected int findClosest(final Color c) {
- if (colorTab == null) return -1;
- final int r = c.getRed();
- final int g = c.getGreen();
- final int b = c.getBlue();
- int minpos = 0;
- int dmin = 256 * 256 * 256;
- final int len = colorTab.length;
- for (int i = 0; i < len; ) {
- final int dr = r - (colorTab[i++] & 0xff);
- final int dg = g - (colorTab[i++] & 0xff);
- final int db = b - (colorTab[i] & 0xff);
- final int d = dr * dr + dg * dg + db * db;
- final int index = i / 3;
- if (usedEntry[index] && (d < dmin)) {
- dmin = d;
- minpos = index;
- }
- i++;
- }
- return minpos;
- }
-
- /**
- * Returns true if the exact matching color is existing, and used in the color palette, otherwise, return false.
- * This method has to be called before finishing the image,
- * because after finished the palette is destroyed, and it will always return false.
- *
- * @param c 颜色
- * @return 颜色是否存在
- */
- boolean isColorUsed(final Color c) {
- return findExact(c) != -1;
- }
-
- /**
- * Returns index of palette exactly matching to color c or -1 if there is no exact matching.
- *
- * @param c Color
- * @return index
- */
- protected int findExact(final Color c) {
- if (colorTab == null) {
- return -1;
- }
-
- final int r = c.getRed();
- final int g = c.getGreen();
- final int b = c.getBlue();
- final int len = colorTab.length / 3;
- for (int index = 0; index < len; ++index) {
- final int i = index * 3;
- // If the entry is used in colorTab, then check if it is the same exact color we're looking for
- if (usedEntry[index] && r == (colorTab[i] & 0xff) && g == (colorTab[i + 1] & 0xff) && b == (colorTab[i + 2] & 0xff)) {
- return index;
- }
- }
- return -1;
- }
-
- /**
- * Extracts image pixels into byte array "pixels"
- */
- protected void getImagePixels() {
- final int w = image.getWidth();
- final int h = image.getHeight();
- final int type = image.getType();
- if ((w != width)
- || (h != height)
- || (type != BufferedImage.TYPE_3BYTE_BGR)) {
- // create new image with right size/format
- final BufferedImage temp =
- new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
- final Graphics2D g = temp.createGraphics();
- g.setColor(background);
- g.fillRect(0, 0, width, height);
- g.drawImage(image, 0, 0, null);
- image = temp;
- }
- pixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
- }
-
- /**
- * Writes Graphic Control Extension
- *
- * @throws IOException IO异常
- */
- protected void writeGraphicCtrlExt() throws IOException {
- out.write(0x21); // extension introducer
- out.write(0xf9); // GCE label
- out.write(4); // data block size
- final int transp;
- int disp;
- if (transparent == null) {
- transp = 0;
- disp = 0; // dispose = no action
- } else {
- transp = 1;
- disp = 2; // force clear if using transparent color
- }
- if (dispose >= 0) {
- disp = dispose & 7; // user override
- }
- disp <<= 2;
-
- // packed fields
- //noinspection PointlessBitwiseExpression
- out.write(0 | // 1:3 reserved
- disp | // 4:6 disposal
- 0 | // 7 user input - 0 = none
- transp); // 8 transparency flag
-
- writeShort(delay); // delay x 1/100 sec
- out.write(transIndex); // transparent color index
- out.write(0); // block terminator
- }
-
- /**
- * Writes Image Descriptor
- *
- * @throws IOException IO异常
- */
- protected void writeImageDesc() throws IOException {
- out.write(0x2c); // image separator
- writeShort(0); // image position x,y = 0,0
- writeShort(0);
- writeShort(width); // image size
- writeShort(height);
- // packed fields
- if (firstFrame) {
- // no LCT - GCT is used for first (or only) frame
- out.write(0);
- } else {
- // specify normal LCT
- //noinspection PointlessBitwiseExpression
- out.write(0x80 | // 1 local color table 1=yes
- 0 | // 2 interlace - 0=no
- 0 | // 3 sorted - 0=no
- 0 | // 4-5 reserved
- palSize); // 6-8 size of color table
- }
- }
-
- /**
- * Writes Logical Screen Descriptor
- *
- * @throws IOException IO异常
- */
- protected void writeLSD() throws IOException {
- // logical screen size
- writeShort(width);
- writeShort(height);
- // packed fields
- //noinspection PointlessBitwiseExpression
- out.write((0x80 | // 1 : global color table flag = 1 (gct used)
- 0x70 | // 2-4 : color resolution = 7
- 0x00 | // 5 : gct sort flag = 0
- palSize)); // 6-8 : gct size
-
- out.write(0); // background color index
- out.write(0); // pixel aspect ratio - assume 1:1
- }
-
- /**
- * Writes Netscape application extension to define
- * repeat count.
- *
- * @throws IOException IO异常
- */
- protected void writeNetscapeExt() throws IOException {
- out.write(0x21); // extension introducer
- out.write(0xff); // app extension label
- out.write(11); // block size
- writeString("NETSCAPE" + "2.0"); // app id + auth code
- out.write(3); // sub-block size
- out.write(1); // loop sub-block id
- writeShort(repeat); // loop count (extra iterations, 0=repeat forever)
- out.write(0); // block terminator
- }
-
- /**
- * Writes color table
- *
- * @throws IOException IO异常
- */
- protected void writePalette() throws IOException {
- out.write(colorTab, 0, colorTab.length);
- final int n = (3 * 256) - colorTab.length;
- for (int i = 0; i < n; i++) {
- out.write(0);
- }
- }
-
- /**
- * Encodes and writes pixel data
- *
- * @throws IOException IO异常
- */
- protected void writePixels() throws IOException {
- final LZWEncoder encoder = new LZWEncoder(width, height, indexedPixels, colorDepth);
- encoder.encode(out);
- }
-
- /**
- * Write 16-bit value to output stream, LSB first
- *
- * @param value 16-bit value
- * @throws IOException IO异常
- */
- protected void writeShort(final int value) throws IOException {
- out.write(value & 0xff);
- out.write((value >> 8) & 0xff);
- }
-
- /**
- * Writes string to output stream
- *
- * @param s String
- * @throws IOException IO异常
- */
- protected void writeString(final String s) throws IOException {
- for (int i = 0; i < s.length(); i++) {
- out.write((byte) s.charAt(i));
- }
- }
-}
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/GifDecoder.java b/hutool-swing/src/main/java/cn/hutool/swing/img/gif/GifDecoder.java
deleted file mode 100755
index 676008a5a..000000000
--- a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/GifDecoder.java
+++ /dev/null
@@ -1,793 +0,0 @@
-package cn.hutool.swing.img.gif;
-
-import cn.hutool.core.io.IoUtil;
-
-import java.awt.AlphaComposite;
-import java.awt.Color;
-import java.awt.Dimension;
-import java.awt.Graphics2D;
-import java.awt.Rectangle;
-import java.awt.image.BufferedImage;
-import java.awt.image.DataBufferInt;
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.util.ArrayList;
-
-/**
- * GIF文件解析
- * Class GifDecoder - Decodes a GIF file into one or more frames.
- *
- * Example:
- *
- *
- * {@code
- * GifDecoder d = new GifDecoder();
- * d.read("sample.gif");
- * int n = d.getFrameCount();
- * for (int i = 0; i < n; i++) {
- * BufferedImage frame = d.getFrame(i); // frame i
- * int t = d.getDelay(i); // display duration of frame in milliseconds
- * // do something with frame
- * }
- * }
- *
- *
- * 来自：https://github.com/rtyley/animated-gif-lib-for-java
- *
- * @author Kevin Weiner, FM Software; LZW decoder adapted from John Cristy's ImageMagick.
- */
-public class GifDecoder {
-
- /**
- * File read status: No errors.
- */
- public static final int STATUS_OK = 0;
-
- /**
- * File read status: Error decoding file (may be partially decoded)
- */
- public static final int STATUS_FORMAT_ERROR = 1;
-
- /**
- * File read status: Unable to open source.
- */
- public static final int STATUS_OPEN_ERROR = 2;
-
- protected BufferedInputStream in;
- protected int status;
-
- protected int width; // full image width
- protected int height; // full image height
- protected boolean gctFlag; // global color table used
- protected int gctSize; // size of global color table
- protected int loopCount = 1; // iterations; 0 = repeat forever
-
- protected int[] gct; // global color table
- protected int[] lct; // local color table
- protected int[] act; // active color table
-
- protected int bgIndex; // background color index
- protected int bgColor; // background color
- protected int lastBgColor; // previous bg color
- protected int pixelAspect; // pixel aspect ratio
-
- protected boolean lctFlag; // local color table flag
- protected boolean interlace; // interlace flag
- protected int lctSize; // local color table size
-
- protected int ix, iy, iw, ih; // current image rectangle
- protected Rectangle lastRect; // last image rect
- protected BufferedImage image; // current frame
- protected BufferedImage lastImage; // previous frame
-
- protected byte[] block = new byte[256]; // current data block
- protected int blockSize = 0; // block size
-
- // last graphic control extension info
- protected int dispose = 0;
- // 0=no action; 1=leave in place; 2=restore to bg; 3=restore to prev
- protected int lastDispose = 0;
- protected boolean transparency = false; // use transparent color
- protected int delay = 0; // delay in milliseconds
- protected int transIndex; // transparent color index
-
- protected static final int MAX_STACK_SIZE = 4096;
- // max decoder pixel stack size
-
- // LZW decoder working arrays
- protected short[] prefix;
- protected byte[] suffix;
- protected byte[] pixelStack;
- protected byte[] pixels;
-
- protected ArrayList frames; // frames read from current file
- protected int frameCount;
-
- static class GifFrame {
- public GifFrame(final BufferedImage im, final int del) {
- image = im;
- delay = del;
- }
-
- public BufferedImage image;
- public int delay;
- }
-
- /**
- * Gets display duration for specified frame.
- *
- * @param n int index of frame
- * @return delay in milliseconds
- */
- public int getDelay(final int n) {
- //
- delay = -1;
- if ((n >= 0) && (n < frameCount)) {
- delay = frames.get(n).delay;
- }
- return delay;
- }
-
- /**
- * Gets the number of frames read from file.
- *
- * @return frame count
- */
- public int getFrameCount() {
- return frameCount;
- }
-
- /**
- * Gets the first (or only) image read.
- *
- * @return BufferedImage containing first frame, or null if none.
- */
- public BufferedImage getImage() {
- return getFrame(0);
- }
-
- /**
- * Gets the "Netscape" iteration count, if any.
- * A count of 0 means repeat indefinitiely.
- *
- * @return iteration count if one was specified, else 1.
- */
- public int getLoopCount() {
- return loopCount;
- }
-
- /**
- * Creates new frame image from current data (and previous
- * frames as specified by their disposition codes).
- */
- protected void setPixels() {
- // expose destination image's pixels as int array
- final int[] dest =
- ((DataBufferInt) image.getRaster().getDataBuffer()).getData();
-
- // fill in starting image contents based on last image's dispose code
- if (lastDispose > 0) {
- if (lastDispose == 3) {
- // use image before last
- final int n = frameCount - 2;
- if (n > 0) {
- lastImage = getFrame(n - 1);
- } else {
- lastImage = null;
- }
- }
-
- if (lastImage != null) {
- final int[] prev =
- ((DataBufferInt) lastImage.getRaster().getDataBuffer()).getData();
- System.arraycopy(prev, 0, dest, 0, width * height);
- // copy pixels
-
- if (lastDispose == 2) {
- // fill last image rect area with background color
- final Graphics2D g = image.createGraphics();
- final Color c;
- if (transparency) {
- c = new Color(0, 0, 0, 0); // assume background is transparent
- } else {
- c = new Color(lastBgColor); // use given background color
- }
- g.setColor(c);
- g.setComposite(AlphaComposite.Src); // replace area
- g.fill(lastRect);
- g.dispose();
- }
- }
- }
-
- // copy each source line to the appropriate place in the destination
- int pass = 1;
- int inc = 8;
- int iline = 0;
- for (int i = 0; i < ih; i++) {
- int line = i;
- if (interlace) {
- if (iline >= ih) {
- pass++;
- switch (pass) {
- case 2:
- iline = 4;
- break;
- case 3:
- iline = 2;
- inc = 4;
- break;
- case 4:
- iline = 1;
- inc = 2;
- }
- }
- line = iline;
- iline += inc;
- }
- line += iy;
- if (line < height) {
- final int k = line * width;
- int dx = k + ix; // start of line in dest
- int dlim = dx + iw; // end of dest line
- if ((k + width) < dlim) {
- dlim = k + width; // past dest edge
- }
- int sx = i * iw; // start of line in source
- while (dx < dlim) {
- // map color and insert in destination
- final int index = ((int) pixels[sx++]) & 0xff;
- final int c = act[index];
- if (c != 0) {
- dest[dx] = c;
- }
- dx++;
- }
- }
- }
- }
-
- /**
- * Gets the image contents of frame n.
- *
- * @param n frame
- * @return BufferedImage
- */
- public BufferedImage getFrame(final int n) {
- BufferedImage im = null;
- if ((n >= 0) && (n < frameCount)) {
- im = frames.get(n).image;
- }
- return im;
- }
-
- /**
- * Gets image size.
- *
- * @return GIF image dimensions
- */
- public Dimension getFrameSize() {
- return new Dimension(width, height);
- }
-
- /**
- * Reads GIF image from stream
- *
- * @param is BufferedInputStream containing GIF file.
- * @return read status code (0 = no errors)
- */
- public int read(final BufferedInputStream is) {
- init();
- if (is != null) {
- in = is;
- readHeader();
- if (false == err()) {
- readContents();
- if (frameCount < 0) {
- status = STATUS_FORMAT_ERROR;
- }
- }
- } else {
- status = STATUS_OPEN_ERROR;
- }
- IoUtil.close(is);
- return status;
- }
-
- /**
- * Reads GIF image from stream
- *
- * @param is InputStream containing GIF file.
- * @return read status code (0 = no errors)
- */
- public int read(InputStream is) {
- init();
- if (is != null) {
- if (!(is instanceof BufferedInputStream))
- is = new BufferedInputStream(is);
- in = (BufferedInputStream) is;
- readHeader();
- if (!err()) {
- readContents();
- if (frameCount < 0) {
- status = STATUS_FORMAT_ERROR;
- }
- }
- } else {
- status = STATUS_OPEN_ERROR;
- }
- IoUtil.close(is);
- return status;
- }
-
- /**
- * Reads GIF file from specified file/URL source
- * (URL assumed if name contains ":/" or "file:")
- *
- * @param name String containing source
- * @return read status code (0 = no errors)
- */
- public int read(String name) {
- status = STATUS_OK;
- try {
- name = name.trim().toLowerCase();
- if ((name.contains("file:")) ||
- (name.indexOf(":/") > 0)) {
- final URL url = new URL(name);
- in = new BufferedInputStream(url.openStream());
- } else {
- in = new BufferedInputStream(Files.newInputStream(Paths.get(name)));
- }
- status = read(in);
- } catch (final IOException e) {
- status = STATUS_OPEN_ERROR;
- }
-
- return status;
- }
-
- /**
- * Decodes LZW image data into pixel array.
- * Adapted from John Cristy's ImageMagick.
- */
- protected void decodeImageData() {
- final int NullCode = -1;
- final int npix = iw * ih;
- int available;
- final int clear;
- int code_mask;
- int code_size;
- final int end_of_information;
- int in_code;
- int old_code;
- int bits;
- int code;
- int count;
- int i;
- int datum;
- final int data_size;
- int first;
- int top;
- int bi;
- int pi;
-
- if ((pixels == null) || (pixels.length < npix)) {
- pixels = new byte[npix]; // allocate new pixel array
- }
- if (prefix == null) prefix = new short[MAX_STACK_SIZE];
- if (suffix == null) suffix = new byte[MAX_STACK_SIZE];
- if (pixelStack == null) pixelStack = new byte[MAX_STACK_SIZE + 1];
-
- // Initialize GIF data stream decoder.
-
- data_size = read();
- clear = 1 << data_size;
- end_of_information = clear + 1;
- available = clear + 2;
- old_code = NullCode;
- code_size = data_size + 1;
- code_mask = (1 << code_size) - 1;
- for (code = 0; code < clear; code++) {
- prefix[code] = 0;
- suffix[code] = (byte) code;
- }
-
- // Decode GIF pixel stream.
-
- datum = bits = count = first = top = pi = bi = 0;
-
- for (i = 0; i < npix; ) {
- if (top == 0) {
- if (bits < code_size) {
- // Load bytes until there are enough bits for a code.
- if (count == 0) {
- // Read a new data block.
- count = readBlock();
- if (count <= 0)
- break;
- bi = 0;
- }
- datum += (((int) block[bi]) & 0xff) << bits;
- bits += 8;
- bi++;
- count--;
- continue;
- }
-
- // Get the next code.
-
- code = datum & code_mask;
- datum >>= code_size;
- bits -= code_size;
-
- // Interpret the code
-
- if ((code > available) || (code == end_of_information))
- break;
- if (code == clear) {
- // Reset decoder.
- code_size = data_size + 1;
- code_mask = (1 << code_size) - 1;
- available = clear + 2;
- old_code = NullCode;
- continue;
- }
- if (old_code == NullCode) {
- pixelStack[top++] = suffix[code];
- old_code = code;
- first = code;
- continue;
- }
- in_code = code;
- if (code == available) {
- pixelStack[top++] = (byte) first;
- code = old_code;
- }
- while (code > clear) {
- pixelStack[top++] = suffix[code];
- code = prefix[code];
- }
- first = ((int) suffix[code]) & 0xff;
-
- // Add a new string to the string table,
-
- if (available >= MAX_STACK_SIZE) {
- pixelStack[top++] = (byte) first;
- continue;
- }
- pixelStack[top++] = (byte) first;
- prefix[available] = (short) old_code;
- suffix[available] = (byte) first;
- available++;
- if (((available & code_mask) == 0)
- && (available < MAX_STACK_SIZE)) {
- code_size++;
- code_mask += available;
- }
- old_code = in_code;
- }
-
- // Pop a pixel off the pixel stack.
-
- top--;
- pixels[pi++] = pixelStack[top];
- i++;
- }
-
- for (i = pi; i < npix; i++) {
- pixels[i] = 0; // clear missing pixels
- }
-
- }
-
- /**
- * Returns true if an error was encountered during reading/decoding
- *
- * @return true if an error was encountered during reading/decoding
- */
- protected boolean err() {
- return status != STATUS_OK;
- }
-
- /**
- * Initializes or re-initializes reader
- */
- protected void init() {
- status = STATUS_OK;
- frameCount = 0;
- frames = new ArrayList<>();
- gct = null;
- lct = null;
- }
-
- /**
- * Reads a single byte from the input stream.
- *
- * @return single byte
- */
- protected int read() {
- int curByte = 0;
- try {
- curByte = in.read();
- } catch (final IOException e) {
- status = STATUS_FORMAT_ERROR;
- }
- return curByte;
- }
-
- /**
- * Reads next variable length block from input.
- *
- * @return number of bytes stored in "buffer"
- */
- protected int readBlock() {
- blockSize = read();
- int n = 0;
- if (blockSize > 0) {
- try {
- int count;
- while (n < blockSize) {
- count = in.read(block, n, blockSize - n);
- if (count == -1)
- break;
- n += count;
- }
- } catch (final IOException e) {
- //ignore
- }
-
- if (n < blockSize) {
- status = STATUS_FORMAT_ERROR;
- }
- }
- return n;
- }
-
- /**
- * Reads color table as 256 RGB integer values
- *
- * @param ncolors int number of colors to read
- * @return int array containing 256 colors (packed ARGB with full alpha)
- */
- protected int[] readColorTable(final int ncolors) {
- final int nbytes = 3 * ncolors;
- int[] tab = null;
- final byte[] c = new byte[nbytes];
- int n = 0;
- try {
- n = in.read(c);
- } catch (final IOException e) {
- //ignore
- }
- if (n < nbytes) {
- status = STATUS_FORMAT_ERROR;
- } else {
- tab = new int[256]; // max size to avoid bounds checks
- int i = 0;
- int j = 0;
- while (i < ncolors) {
- final int r = ((int) c[j++]) & 0xff;
- final int g = ((int) c[j++]) & 0xff;
- final int b = ((int) c[j++]) & 0xff;
- tab[i++] = 0xff000000 | (r << 16) | (g << 8) | b;
- }
- }
- return tab;
- }
-
- /**
- * Main file parser. Reads GIF content blocks.
- */
- protected void readContents() {
- // read GIF file content blocks
- boolean done = false;
- while (!(done || err())) {
- int code = read();
- switch (code) {
-
- case 0x2C: // image separator
- readImage();
- break;
-
- case 0x21: // extension
- code = read();
- switch (code) {
- case 0xf9: // graphics control extension
- readGraphicControlExt();
- break;
-
- case 0xff: // application extension
- readBlock();
- final StringBuilder app = new StringBuilder();
- for (int i = 0; i < 11; i++) {
- app.append((char) block[i]);
- }
- if ("NETSCAPE2.0".equals(app.toString())) {
- readNetscapeExt();
- } else {
- skip(); // don't care
- }
- break;
-
- default: // uninteresting extension
- skip();
- }
- break;
-
- case 0x3b: // terminator
- done = true;
- break;
-
- case 0x00: // bad byte, but keep going and see what happens
- break;
-
- default:
- status = STATUS_FORMAT_ERROR;
- }
- }
- }
-
- /**
- * Reads Graphics Control Extension values
- */
- protected void readGraphicControlExt() {
- read(); // block size
- final int packed = read(); // packed fields
- dispose = (packed & 0x1c) >> 2; // disposal method
- if (dispose == 0) {
- dispose = 1; // elect to keep old image if discretionary
- }
- transparency = (packed & 1) != 0;
- delay = readShort() * 10; // delay in milliseconds
- transIndex = read(); // transparent color index
- read(); // block terminator
- }
-
- /**
- * Reads GIF file header information.
- */
- protected void readHeader() {
- final StringBuilder id = new StringBuilder();
- for (int i = 0; i < 6; i++) {
- id.append((char) read());
- }
- if (false == id.toString().startsWith("GIF")) {
- status = STATUS_FORMAT_ERROR;
- return;
- }
-
- readLSD();
- if (gctFlag && !err()) {
- gct = readColorTable(gctSize);
- bgColor = gct[bgIndex];
- }
- }
-
- /**
- * Reads next frame image
- */
- protected void readImage() {
- ix = readShort(); // (sub)image position & size
- iy = readShort();
- iw = readShort();
- ih = readShort();
-
- final int packed = read();
- lctFlag = (packed & 0x80) != 0; // 1 - local color table flag
- interlace = (packed & 0x40) != 0; // 2 - interlace flag
- // 3 - sort flag
- // 4-5 - reserved
- lctSize = 2 << (packed & 7); // 6-8 - local color table size
-
- if (lctFlag) {
- lct = readColorTable(lctSize); // read table
- act = lct; // make local table active
- } else {
- act = gct; // make global table active
- if (bgIndex == transIndex)
- bgColor = 0;
- }
- int save = 0;
- if (transparency) {
- save = act[transIndex];
- act[transIndex] = 0; // set transparent color if specified
- }
-
- if (act == null) {
- status = STATUS_FORMAT_ERROR; // no color table defined
- }
-
- if (err()) return;
-
- decodeImageData(); // decode pixel data
- skip();
-
- if (err()) return;
-
- frameCount++;
-
- // create new image to receive frame data
- image =
- new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB_PRE);
-
- setPixels(); // transfer pixel data to image
-
- frames.add(new GifFrame(image, delay)); // add image to frame list
-
- if (transparency) {
- act[transIndex] = save;
- }
- resetFrame();
-
- }
-
- /**
- * Reads Logical Screen Descriptor
- */
- protected void readLSD() {
-
- // logical screen size
- width = readShort();
- height = readShort();
-
- // packed fields
- final int packed = read();
- gctFlag = (packed & 0x80) != 0; // 1 : global color table flag
- // 2-4 : color resolution
- // 5 : gct sort flag
- gctSize = 2 << (packed & 7); // 6-8 : gct size
-
- bgIndex = read(); // background color index
- pixelAspect = read(); // pixel aspect ratio
- }
-
- /**
- * Reads Netscape extenstion to obtain iteration count
- */
- protected void readNetscapeExt() {
- do {
- readBlock();
- if (block[0] == 1) {
- // loop count sub-block
- final int b1 = ((int) block[1]) & 0xff;
- final int b2 = ((int) block[2]) & 0xff;
- loopCount = (b2 << 8) | b1;
- }
- } while ((blockSize > 0) && !err());
- }
-
- /**
- * Reads next 16-bit value, LSB first
- *
- * @return next 16-bit value
- */
- protected int readShort() {
- // read 16-bit value, LSB first
- return read() | (read() << 8);
- }
-
- /**
- * Resets frame state for reading next image.
- */
- protected void resetFrame() {
- lastDispose = dispose;
- lastRect = new Rectangle(ix, iy, iw, ih);
- lastImage = image;
- lastBgColor = bgColor;
- lct = null;
- }
-
- /**
- * Skips variable length blocks up to and including
- * next zero length block.
- */
- protected void skip() {
- do {
- readBlock();
- } while ((blockSize > 0) && !err());
- }
-}
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/LZWEncoder.java b/hutool-swing/src/main/java/cn/hutool/swing/img/gif/LZWEncoder.java
deleted file mode 100755
index 0dc2e1ed8..000000000
--- a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/LZWEncoder.java
+++ /dev/null
@@ -1,306 +0,0 @@
-package cn.hutool.swing.img.gif;
-
-import java.io.IOException;
-import java.io.OutputStream;
-
-//==============================================================================
-// Adapted from Jef Poskanzer's Java port by way of J. M. G. Elliott.
-// K Weiner 12/00
-
-class LZWEncoder {
-
- private static final int EOF = -1;
-
- private final int imgW;
- private final int imgH;
- private final byte[] pixAry;
- private final int initCodeSize;
-
- private int remaining;
- private int curPixel;
-
- // GIFCOMPR.C - GIF Image compression routines
- //
- // Lempel-Ziv compression based on 'compress'. GIF modifications by
- // David Rowley (mgardi@watdcsu.waterloo.edu)
-
- // General DEFINEs
-
- static final int BITS = 12;
-
- static final int HSIZE = 5003; // 80% occupancy
-
- // GIF Image compression - modified 'compress'
- //
- // Based on: compress.c - File compression ala IEEE Computer, June 1984.
- //
- // By Authors: Spencer W. Thomas (decvax!harpo!utah-cs!utah-gr!thomas)
- // Jim McKie (decvax!mcvax!jim)
- // Steve Davies (decvax!vax135!petsd!peora!srd)
- // Ken Turkowski (decvax!decwrl!turtlevax!ken)
- // James A. Woods (decvax!ihnp4!ames!jaw)
- // Joe Orost (decvax!vax135!petsd!joe)
-
- int n_bits; // number of bits/code
- int maxbits = BITS; // user settable max # bits/code
- int maxcode; // maximum code, given n_bits
- int maxmaxcode = 1 << BITS; // should NEVER generate this code
-
- int[] htab = new int[HSIZE];
- int[] codetab = new int[HSIZE];
-
- int hsize = HSIZE; // for dynamic table sizing
-
- int free_ent = 0; // first unused entry
-
- // block compression parameters -- after all codes are used up,
- // and compression rate changes, start over.
- boolean clear_flg = false;
-
- // Algorithm: use open addressing double hashing (no chaining) on the
- // prefix code / next character combination. We do a variant of Knuth's
- // algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
- // secondary probe. Here, the modular division first probe is gives way
- // to a faster exclusive-or manipulation. Also do block compression with
- // an adaptive reset, whereby the code table is cleared when the compression
- // ratio decreases, but after the table fills. The variable-length output
- // codes are re-sized at this point, and a special CLEAR code is generated
- // for the decompressor. Late addition: construct the table according to
- // file size for noticeable speed improvement on small files. Please direct
- // questions about this implementation to ames!jaw.
-
- int g_init_bits;
-
- int ClearCode;
- int EOFCode;
-
- // output
- //
- // Output the given code.
- // Inputs:
- // code: A n_bits-bit integer. If == -1, then EOF. This assumes
- // that n_bits =< wordsize - 1.
- // Outputs:
- // Outputs code to the file.
- // Assumptions:
- // Chars are 8 bits long.
- // Algorithm:
- // Maintain a BITS character long buffer (so that 8 codes will
- // fit in it exactly). Use the VAX insv instruction to insert each
- // code in turn. When the buffer fills up empty it and start over.
-
- int cur_accum = 0;
- int cur_bits = 0;
-
- final int[] masks =
- {
- 0x0000,
- 0x0001,
- 0x0003,
- 0x0007,
- 0x000F,
- 0x001F,
- 0x003F,
- 0x007F,
- 0x00FF,
- 0x01FF,
- 0x03FF,
- 0x07FF,
- 0x0FFF,
- 0x1FFF,
- 0x3FFF,
- 0x7FFF,
- 0xFFFF };
-
- // Number of characters so far in this 'packet'
- int a_count;
-
- // Define the storage for the packet accumulator
- byte[] accum = new byte[256];
-
- //----------------------------------------------------------------------------
- LZWEncoder(final int width, final int height, final byte[] pixels, final int color_depth) {
- imgW = width;
- imgH = height;
- pixAry = pixels;
- initCodeSize = Math.max(2, color_depth);
- }
-
- // Add a character to the end of the current packet, and if it is 254
- // characters, flush the packet to disk.
- void char_out(final byte c, final OutputStream outs) throws IOException {
- accum[a_count++] = c;
- if (a_count >= 254)
- flush_char(outs);
- }
-
- // Clear out the hash table
-
- // table clear for block compress
- void cl_block(final OutputStream outs) throws IOException {
- cl_hash(hsize);
- free_ent = ClearCode + 2;
- clear_flg = true;
-
- output(ClearCode, outs);
- }
-
- // reset code table
- void cl_hash(final int hsize) {
- for (int i = 0; i < hsize; ++i)
- htab[i] = -1;
- }
-
- void compress(final int init_bits, final OutputStream outs) throws IOException {
- int fcode;
- int i /* = 0 */;
- int c;
- int ent;
- int disp;
- final int hsize_reg;
- int hshift;
-
- // Set up the globals: g_init_bits - initial number of bits
- g_init_bits = init_bits;
-
- // Set up the necessary values
- clear_flg = false;
- n_bits = g_init_bits;
- maxcode = MAXCODE(n_bits);
-
- ClearCode = 1 << (init_bits - 1);
- EOFCode = ClearCode + 1;
- free_ent = ClearCode + 2;
-
- a_count = 0; // clear packet
-
- ent = nextPixel();
-
- hshift = 0;
- for (fcode = hsize; fcode < 65536; fcode *= 2)
- ++hshift;
- hshift = 8 - hshift; // set hash code range bound
-
- hsize_reg = hsize;
- cl_hash(hsize_reg); // clear hash table
-
- output(ClearCode, outs);
-
- outer_loop : while ((c = nextPixel()) != EOF) {
- fcode = (c << maxbits) + ent;
- i = (c << hshift) ^ ent; // xor hashing
-
- if (htab[i] == fcode) {
- ent = codetab[i];
- continue;
- } else if (htab[i] >= 0) // non-empty slot
- {
- disp = hsize_reg - i; // secondary hash (after G. Knott)
- if (i == 0)
- disp = 1;
- do {
- if ((i -= disp) < 0)
- i += hsize_reg;
-
- if (htab[i] == fcode) {
- ent = codetab[i];
- continue outer_loop;
- }
- } while (htab[i] >= 0);
- }
- output(ent, outs);
- ent = c;
- if (free_ent < maxmaxcode) {
- codetab[i] = free_ent++; // code -> hashtable
- htab[i] = fcode;
- } else {
- cl_block(outs);
- }
- }
- // Put out the final code.
- output(ent, outs);
- output(EOFCode, outs);
- }
-
- //----------------------------------------------------------------------------
- void encode(final OutputStream os) throws IOException {
- os.write(initCodeSize); // write "initial code size" byte
-
- remaining = imgW * imgH; // reset navigation variables
- curPixel = 0;
-
- compress(initCodeSize + 1, os); // compress and write the pixel data
-
- os.write(0); // write block terminator
- }
-
- // Flush the packet to disk, and reset the accumulator
- void flush_char(final OutputStream outs) throws IOException {
- if (a_count > 0) {
- outs.write(a_count);
- outs.write(accum, 0, a_count);
- a_count = 0;
- }
- }
-
- final int MAXCODE(final int n_bits) {
- return (1 << n_bits) - 1;
- }
-
- //----------------------------------------------------------------------------
- // Return the next pixel from the image
- //----------------------------------------------------------------------------
- private int nextPixel() {
- if (remaining == 0)
- return EOF;
-
- --remaining;
-
- final byte pix = pixAry[curPixel++];
-
- return pix & 0xff;
- }
-
- void output(final int code, final OutputStream outs) throws IOException {
- cur_accum &= masks[cur_bits];
-
- if (cur_bits > 0)
- cur_accum |= (code << cur_bits);
- else
- cur_accum = code;
-
- cur_bits += n_bits;
-
- while (cur_bits >= 8) {
- char_out((byte) (cur_accum & 0xff), outs);
- cur_accum >>= 8;
- cur_bits -= 8;
- }
-
- // If the next entry is going to be too big for the code size,
- // then increase it, if possible.
- if (free_ent > maxcode || clear_flg) {
- if (clear_flg) {
- maxcode = MAXCODE(n_bits = g_init_bits);
- clear_flg = false;
- } else {
- ++n_bits;
- if (n_bits == maxbits)
- maxcode = maxmaxcode;
- else
- maxcode = MAXCODE(n_bits);
- }
- }
-
- if (code == EOFCode) {
- // At EOF, write the rest of the buffer.
- while (cur_bits > 0) {
- char_out((byte) (cur_accum & 0xff), outs);
- cur_accum >>= 8;
- cur_bits -= 8;
- }
-
- flush_char(outs);
- }
- }
-}
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/NeuQuant.java b/hutool-swing/src/main/java/cn/hutool/swing/img/gif/NeuQuant.java
deleted file mode 100755
index ff128f59e..000000000
--- a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/NeuQuant.java
+++ /dev/null
@@ -1,444 +0,0 @@
-package cn.hutool.swing.img.gif;
-
-/**
- * NeuQuant Neural-Net Quantization Algorithm
- *
- * @author Dekker
- */
-public class NeuQuant {
-
- protected static final int NETSIZE = 256; /* number of colours used */
-
- /* four primes near 500 - assume no image has a length so large */
- /* that it is divisible by all four primes */
- protected static final int PRIME1 = 499;
- protected static final int PRIME2 = 491;
- protected static final int PRIME3 = 487;
- protected static final int PRIME4 = 503;
-
- protected static final int MINPICTUREBYTES = (3 * PRIME4);
- /* minimum size for input image */
-
- /* Program Skeleton
- ----------------
- [select samplefac in range 1..30]
- [read image from input file]
- pic = (unsigned char*) malloc(3*width*height);
- initnet(pic,3*width*height,samplefac);
- learn();
- unbiasnet();
- [write output image header, using writecolourmap(f)]
- inxbuild();
- write output image using inxsearch(b,g,r) */
-
- /* Network Definitions
- ------------------- */
-
- protected static final int MAXNETPOS = (NETSIZE - 1);
- protected static final int NETBIASSHIFT = 4; /* bias for colour values */
- protected static final int NCYCLES = 100; /* no. of learning cycles */
-
- /* defs for freq and bias */
- protected static final int INTBIASSHIFT = 16; /* bias for fractions */
- protected static final int INTBIAS = (1 << INTBIASSHIFT);
- protected static final int GAMMASHIFT = 10; /* gamma = 1024 */
- protected static final int GAMMA = (1 << GAMMASHIFT);
- protected static final int BETASHIFT = 10;
- protected static final int BETA = (INTBIAS >> BETASHIFT); /* beta = 1/1024 */
- protected static final int BETAGAMMA =
- (INTBIAS << (GAMMASHIFT - BETASHIFT));
-
- /* defs for decreasing radius factor */
- protected static final int INITRAD = (NETSIZE >> 3); /* for 256 cols, radius starts */
- protected static final int RADIUSBIASSHIFT = 6; /* at 32.0 biased by 6 bits */
- protected static final int RADIUSBIAS = (1 << RADIUSBIASSHIFT);
- protected static final int INITRADIUS = (INITRAD * RADIUSBIAS); /* and decreases by a */
- protected static final int RADIUSDEC = 30; /* factor of 1/30 each cycle */
-
- /* defs for decreasing alpha factor */
- protected static final int ALPHABIASSHIFT = 10; /* alpha starts at 1.0 */
- protected static final int INITALPHA = (1 << ALPHABIASSHIFT);
-
- protected int alphadec; /* biased by 10 bits */
-
- /* radbias and alpharadbias used for radpower calculation */
- protected static final int RADBIASSHIFT = 8;
- protected static final int RADBIAS = (1 << RADBIASSHIFT);
- protected static final int ALPHARADBSHIFT = (ALPHABIASSHIFT + RADBIASSHIFT);
- protected static final int ALPHARADBIAS = (1 << ALPHARADBSHIFT);
-
- /* Types and Global Variables
- -------------------------- */
-
- protected byte[] thepicture; /* the input image itself */
- protected int lengthcount; /* lengthcount = H*W*3 */
-
- protected int samplefac; /* sampling factor 1..30 */
-
- // typedef int pixel[4]; /* BGRc */
- protected int[][] network; /* the network itself - [netsize][4] */
-
- protected int[] netindex = new int[256];
- /* for network lookup - really 256 */
-
- protected int[] bias = new int[NETSIZE];
- /* bias and freq arrays for learning */
- protected int[] freq = new int[NETSIZE];
- protected int[] radpower = new int[INITRAD];
- /* radpower for precomputation */
-
- /* Initialise network in range (0,0,0) to (255,255,255) and set parameters
- ----------------------------------------------------------------------- */
- public NeuQuant(final byte[] thepic, final int len, final int sample) {
-
- int i;
- int[] p;
-
- thepicture = thepic;
- lengthcount = len;
- samplefac = sample;
-
- network = new int[NETSIZE][];
- for (i = 0; i < NETSIZE; i++) {
- network[i] = new int[4];
- p = network[i];
- p[0] = p[1] = p[2] = (i << (NETBIASSHIFT + 8)) / NETSIZE;
- freq[i] = INTBIAS / NETSIZE; /* 1/netsize */
- bias[i] = 0;
- }
- }
-
- public byte[] colorMap() {
- final byte[] map = new byte[3 * NETSIZE];
- final int[] index = new int[NETSIZE];
- for (int i = 0; i < NETSIZE; i++)
- index[network[i][3]] = i;
- int k = 0;
- for (int i = 0; i < NETSIZE; i++) {
- final int j = index[i];
- map[k++] = (byte) (network[j][0]);
- map[k++] = (byte) (network[j][1]);
- map[k++] = (byte) (network[j][2]);
- }
- return map;
- }
-
- /* Insertion sort of network and building of netindex[0..255] (to do after unbias)
- ------------------------------------------------------------------------------- */
- public void inxbuild() {
-
- int i, j, smallpos, smallval;
- int[] p;
- int[] q;
- int previouscol, startpos;
-
- previouscol = 0;
- startpos = 0;
- for (i = 0; i < NETSIZE; i++) {
- p = network[i];
- smallpos = i;
- smallval = p[1]; /* index on g */
- /* find smallest in i..netsize-1 */
- for (j = i + 1; j < NETSIZE; j++) {
- q = network[j];
- if (q[1] < smallval) { /* index on g */
- smallpos = j;
- smallval = q[1]; /* index on g */
- }
- }
- q = network[smallpos];
- /* swap p (i) and q (smallpos) entries */
- if (i != smallpos) {
- j = q[0];
- q[0] = p[0];
- p[0] = j;
- j = q[1];
- q[1] = p[1];
- p[1] = j;
- j = q[2];
- q[2] = p[2];
- p[2] = j;
- j = q[3];
- q[3] = p[3];
- p[3] = j;
- }
- /* smallval entry is now in position i */
- if (smallval != previouscol) {
- netindex[previouscol] = (startpos + i) >> 1;
- for (j = previouscol + 1; j < smallval; j++)
- netindex[j] = i;
- previouscol = smallval;
- startpos = i;
- }
- }
- netindex[previouscol] = (startpos + MAXNETPOS) >> 1;
- for (j = previouscol + 1; j < 256; j++)
- netindex[j] = MAXNETPOS; /* really 256 */
- }
-
- /* Main Learning Loop
- ------------------ */
- public void learn() {
-
- int i, j, b, g, r;
- int radius;
- int rad;
- int alpha;
- final int step;
- int delta;
- final int samplepixels;
- final byte[] p;
- int pix;
- final int lim;
-
- if (lengthcount < MINPICTUREBYTES)
- samplefac = 1;
- alphadec = 30 + ((samplefac - 1) / 3);
- p = thepicture;
- pix = 0;
- lim = lengthcount;
- samplepixels = lengthcount / (3 * samplefac);
- delta = samplepixels / NCYCLES;
- alpha = INITALPHA;
- radius = INITRADIUS;
-
- rad = radius >> RADIUSBIASSHIFT;
- for (i = 0; i < rad; i++)
- radpower[i] =
- alpha * (((rad * rad - i * i) * RADBIAS) / (rad * rad));
-
- //fprintf(stderr,"beginning 1D learning: initial radius=%d\n", rad);
-
- if (lengthcount < MINPICTUREBYTES)
- step = 3;
- else if ((lengthcount % PRIME1) != 0)
- step = 3 * PRIME1;
- else {
- if ((lengthcount % PRIME2) != 0)
- step = 3 * PRIME2;
- else {
- if ((lengthcount % PRIME3) != 0)
- step = 3 * PRIME3;
- else
- step = 3 * PRIME4;
- }
- }
-
- i = 0;
- while (i < samplepixels) {
- b = (p[pix] & 0xff) << NETBIASSHIFT;
- g = (p[pix + 1] & 0xff) << NETBIASSHIFT;
- r = (p[pix + 2] & 0xff) << NETBIASSHIFT;
- j = contest(b, g, r);
-
- altersingle(alpha, j, b, g, r);
- if (rad != 0)
- alterneigh(rad, j, b, g, r); /* alter neighbours */
-
- pix += step;
- if (pix >= lim)
- pix -= lengthcount;
-
- i++;
- if (delta == 0)
- delta = 1;
- if (i % delta == 0) {
- alpha -= alpha / alphadec;
- radius -= radius / RADIUSDEC;
- rad = radius >> RADIUSBIASSHIFT;
- if (rad <= 1)
- rad = 0;
- for (j = 0; j < rad; j++)
- radpower[j] =
- alpha * (((rad * rad - j * j) * RADBIAS) / (rad * rad));
- }
- }
- //fprintf(stderr,"finished 1D learning: final alpha=%f !\n",((float)alpha)/initalpha);
- }
-
- /* Search for BGR values 0..255 (after net is unbiased) and return colour index
- ---------------------------------------------------------------------------- */
- public int map(final int b, final int g, final int r) {
-
- int i, j, dist, a, bestd;
- int[] p;
- int best;
-
- bestd = 1000; /* biggest possible dist is 256*3 */
- best = -1;
- i = netindex[g]; /* index on g */
- j = i - 1; /* start at netindex[g] and work outwards */
-
- while ((i < NETSIZE) || (j >= 0)) {
- if (i < NETSIZE) {
- p = network[i];
- dist = p[1] - g; /* inx key */
- if (dist >= bestd)
- i = NETSIZE; /* stop iter */
- else {
- i++;
- if (dist < 0)
- dist = -dist;
- a = p[0] - b;
- if (a < 0)
- a = -a;
- dist += a;
- if (dist < bestd) {
- a = p[2] - r;
- if (a < 0)
- a = -a;
- dist += a;
- if (dist < bestd) {
- bestd = dist;
- best = p[3];
- }
- }
- }
- }
- if (j >= 0) {
- p = network[j];
- dist = g - p[1]; /* inx key - reverse dif */
- if (dist >= bestd)
- j = -1; /* stop iter */
- else {
- j--;
- if (dist < 0)
- dist = -dist;
- a = p[0] - b;
- if (a < 0)
- a = -a;
- dist += a;
- if (dist < bestd) {
- a = p[2] - r;
- if (a < 0)
- a = -a;
- dist += a;
- if (dist < bestd) {
- bestd = dist;
- best = p[3];
- }
- }
- }
- }
- }
- return (best);
- }
-
- public byte[] process() {
- learn();
- unbiasnet();
- inxbuild();
- return colorMap();
- }
-
- /* Unbias network to give byte values 0..255 and record position i to prepare for sort
- ----------------------------------------------------------------------------------- */
- public void unbiasnet() {
- for (int i = 0; i < NETSIZE; i++) {
- network[i][0] >>= NETBIASSHIFT;
- network[i][1] >>= NETBIASSHIFT;
- network[i][2] >>= NETBIASSHIFT;
- network[i][3] = i; /* record colour no */
- }
- }
-
- /* Move adjacent neurons by precomputed alpha*(1-((i-j)^2/[r]^2)) in radpower[|i-j|]
- --------------------------------------------------------------------------------- */
- protected void alterneigh(final int rad, final int i, final int b, final int g, final int r) {
-
- int j, k, lo, hi, a, m;
- int[] p;
-
- lo = i - rad;
- if (lo < -1)
- lo = -1;
- hi = i + rad;
- if (hi > NETSIZE)
- hi = NETSIZE;
-
- j = i + 1;
- k = i - 1;
- m = 1;
- while ((j < hi) || (k > lo)) {
- a = radpower[m++];
- if (j < hi) {
- p = network[j++];
- try {
- p[0] -= (a * (p[0] - b)) / ALPHARADBIAS;
- p[1] -= (a * (p[1] - g)) / ALPHARADBIAS;
- p[2] -= (a * (p[2] - r)) / ALPHARADBIAS;
- } catch (final Exception ignored) {
- } // prevents 1.3 miscompilation
- }
- if (k > lo) {
- p = network[k--];
- try {
- p[0] -= (a * (p[0] - b)) / ALPHARADBIAS;
- p[1] -= (a * (p[1] - g)) / ALPHARADBIAS;
- p[2] -= (a * (p[2] - r)) / ALPHARADBIAS;
- } catch (final Exception ignored) {
- }
- }
- }
- }
-
- /* Move neuron i towards biased (b,g,r) by factor alpha
- ---------------------------------------------------- */
- protected void altersingle(final int alpha, final int i, final int b, final int g, final int r) {
-
- /* alter hit neuron */
- final int[] n = network[i];
- n[0] -= (alpha * (n[0] - b)) / INITALPHA;
- n[1] -= (alpha * (n[1] - g)) / INITALPHA;
- n[2] -= (alpha * (n[2] - r)) / INITALPHA;
- }
-
- /* Search for biased BGR values
- ---------------------------- */
- protected int contest(final int b, final int g, final int r) {
-
- /* finds closest neuron (min dist) and updates freq */
- /* finds best neuron (min dist-bias) and returns position */
- /* for frequently chosen neurons, freq[i] is high and bias[i] is negative */
- /* bias[i] = gamma*((1/netsize)-freq[i]) */
-
- int i, dist, a, biasdist, betafreq;
- int bestpos, bestbiaspos, bestd, bestbiasd;
- int[] n;
-
- bestd = ~(1 << 31);
- bestbiasd = bestd;
- bestpos = -1;
- bestbiaspos = bestpos;
-
- for (i = 0; i < NETSIZE; i++) {
- n = network[i];
- dist = n[0] - b;
- if (dist < 0)
- dist = -dist;
- a = n[1] - g;
- if (a < 0)
- a = -a;
- dist += a;
- a = n[2] - r;
- if (a < 0)
- a = -a;
- dist += a;
- if (dist < bestd) {
- bestd = dist;
- bestpos = i;
- }
- biasdist = dist - ((bias[i]) >> (INTBIASSHIFT - NETBIASSHIFT));
- if (biasdist < bestbiasd) {
- bestbiasd = biasdist;
- bestbiaspos = i;
- }
- betafreq = (freq[i] >> BETASHIFT);
- freq[i] -= betafreq;
- bias[i] += (betafreq << GAMMASHIFT);
- }
- freq[bestpos] += BETA;
- bias[bestpos] -= BETAGAMMA;
- return (bestbiaspos);
- }
-}
diff --git a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/package-info.java b/hutool-swing/src/main/java/cn/hutool/swing/img/gif/package-info.java
deleted file mode 100755
index e0280645d..000000000
--- a/hutool-swing/src/main/java/cn/hutool/swing/img/gif/package-info.java
+++ /dev/null
@@ -1,7 +0,0 @@
-/**
- * GIF处理，来自：https://github.com/rtyley/animated-gif-lib-for-java
- *
- * @author looly
- *
- */
-package cn.hutool.swing.img.gif;