/**
* Saves an image as a gif. Currently this uses ImageMagick's "convert" (Windows or Linux) because
* it does the best job at color reduction (and is fast and is cross-platform). This will
* overwrite an existing file.
*
* @param bi
* @param fullGifName but without the .gif at the end
* @throws Exception if trouble
*/
public static void saveAsGif(BufferedImage bi, String fullGifName) throws Exception {
// POLICY: because this procedure may be used in more than one thread,
// do work on unique temp files names using randomInt, then rename to proper file name.
// If procedure fails half way through, there won't be a half-finished file.
int randomInt = Math2.random(Integer.MAX_VALUE);
// save as .bmp (note: doesn't support transparent pixels)
long time = System.currentTimeMillis();
if (verbose) String2.log("SgtUtil.saveAsGif");
ImageIO.write(bi, "bmp", new File(fullGifName + randomInt + ".bmp"));
if (verbose) String2.log(" make .bmp done. time=" + (System.currentTimeMillis() - time));
// "convert" to .gif
SSR.dosOrCShell(
"convert " + fullGifName + randomInt + ".bmp" + " " + fullGifName + randomInt + ".gif", 30);
File2.delete(fullGifName + randomInt + ".bmp");
// try fancy color reduction algorithms
// Image2.saveAsGif(Image2.reduceTo216Colors(bi), fullGifName + randomInt + ".gif");
// try dithering
// Image2.saveAsGif216(bi, fullGifName + randomInt + ".gif", true);
// last step: rename to final gif name
File2.rename(fullGifName + randomInt + ".gif", fullGifName + ".gif");
if (verbose)
String2.log(
"SgtUtil.saveAsGif done. TOTAL TIME=" + (System.currentTimeMillis() - time) + "\n");
}
/**
* Saves an image as a gif. Currently this uses ImageMagick's "convert" (Windows or Linux) because
* it does the best job at color reduction (and is fast and is cross-platform). This will
* overwrite an existing file.
*
* @param bi
* @param transparent the color to be made transparent
* @param fullGifName but without the .gif at the end
* @throws Exception if trouble
*/
public static void saveAsTransparentGif(BufferedImage bi, Color transparent, String fullGifName)
throws Exception {
// POLICY: because this procedure may be used in more than one thread,
// do work on unique temp files names using randomInt, then rename to proper file name.
// If procedure fails half way through, there won't be a half-finished file.
int randomInt = Math2.random(Integer.MAX_VALUE);
// convert transparent color to be transparent
long time = System.currentTimeMillis();
Image image = Image2.makeImageBackgroundTransparent(bi, transparent, 10000);
// convert image back to bufferedImage
bi = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics g = bi.getGraphics();
g.drawImage(image, 0, 0, bi.getWidth(), bi.getHeight(), null);
image = null; // encourage garbage collection
// save as png
int random = Math2.random(Integer.MAX_VALUE);
ImageIO.write(bi, "png", new File(fullGifName + randomInt + ".png"));
// "convert" to .gif
SSR.dosOrCShell(
"convert " + fullGifName + randomInt + ".png" + " " + fullGifName + randomInt + ".gif", 30);
File2.delete(fullGifName + randomInt + ".png");
// try fancy color reduction algorithms
// Image2.saveAsGif(Image2.reduceTo216Colors(bi), fullGifName + randomInt + ".gif");
// try dithering
// Image2.saveAsGif216(bi, fullGifName + randomInt + ".gif", true);
// last step: rename to final gif name
File2.rename(fullGifName + randomInt + ".gif", fullGifName + ".gif");
if (verbose)
String2.log(
"SgtUtil.saveAsTransparentGif TIME=" + (System.currentTimeMillis() - time) + "\n");
}
/**
* Saves an image as a png. This will overwrite an existing file.
*
* @param bi
* @param transparent the color to be made transparent (or null if none)
* @param fullPngName but without the .png at the end
* @throws Exception if trouble
*/
public static void saveAsTransparentPng(BufferedImage bi, Color transparent, String fullPngName)
throws Exception {
// POLICY: because this procedure may be used in more than one thread,
// do work on unique temp files names using randomInt, then rename to proper file name.
// If procedure fails half way through, there won't be a half-finished file.
int randomInt = Math2.random(Integer.MAX_VALUE);
// create fileOutputStream
BufferedOutputStream bos =
new BufferedOutputStream(new FileOutputStream(fullPngName + randomInt + ".png"));
// save the image
saveAsTransparentPng(bi, transparent, bos);
bos.close();
// last step: rename to final Png name
File2.rename(fullPngName + randomInt + ".png", fullPngName + ".png");
}
for (int i = 0; i < n; i++) {
int tRow = Math2.random(n);
Test.ensureEqual(pt.readBinaryInt(3, tRow), tRow, "");
}
for (int i = 0; i < n; i++) {
int tRow = Math2.random(n);
Test.ensureEqual(pt.readDouble(2, tRow), tRow, "");
}
/**
* This tests this class.
*
* @throws Throwable if trouble.
*/
public static void test() throws Throwable {
String2.log("\nPersistentTable.test()");
verbose = true;
reallyVerbose = true;
int n;
long time;
// find longest FLOAT_LENGTH
String s = ("" + Float.MIN_VALUE * -4f / 3f);
int longest = s.length();
String longestS = s;
for (int i = 0; i < 1000; i++) {
s = "" + ((float) Math.random() / -1e10f);
if (s.length() > longest) {
longest = s.length();
longestS = s;
}
}
String2.log("float longestS=" + longestS + " length=" + longest);
Test.ensureTrue(longest <= 15, "");
// find longest DOUBLE_LENGTH
s = ("" + Double.MIN_VALUE * -4.0 / 3.0);
longest = s.length();
longestS = s;
for (int i = 0; i < 1000; i++) {
s = "" + (Math.random() / -1e150);
if (s.length() > longest) {
longest = s.length();
longestS = s;
}
}
String2.log("double longestS=" + longestS + " length=" + longest);
Test.ensureTrue(longest <= 24, "");
// make a new table
String name = EDStatic.fullTestCacheDirectory + "testPersistentTable.txt";
File2.delete(name);
int widths[] = {
BOOLEAN_LENGTH,
BYTE_LENGTH,
BINARY_BYTE_LENGTH,
BINARY_CHAR_LENGTH,
SHORT_LENGTH,
BINARY_SHORT_LENGTH,
INT_LENGTH,
BINARY_INT_LENGTH,
LONG_LENGTH,
BINARY_LONG_LENGTH,
FLOAT_LENGTH,
BINARY_FLOAT_LENGTH,
DOUBLE_LENGTH,
BINARY_DOUBLE_LENGTH,
20
};
PersistentTable pt = new PersistentTable(name, "rw", widths);
Test.ensureEqual(pt.nRows(), 0, "");
Test.ensureEqual(pt.addRows(2), 2, "");
String testS = "Now is the time f\u0F22r all good countrymen to come ...";
pt.writeBoolean(0, 0, true);
pt.writeBoolean(0, 1, false);
pt.writeByte(1, 0, Byte.MIN_VALUE);
pt.writeByte(1, 1, Byte.MAX_VALUE);
pt.writeBinaryByte(2, 0, Byte.MIN_VALUE);
pt.writeBinaryByte(2, 1, Byte.MAX_VALUE);
pt.writeBinaryChar(3, 0, ' '); // hard because read will trim it to ""
pt.writeBinaryChar(3, 1, '\u0F22');
pt.writeShort(4, 0, Short.MIN_VALUE);
pt.writeShort(4, 1, Short.MAX_VALUE);
pt.writeBinaryShort(5, 0, Short.MIN_VALUE);
pt.writeBinaryShort(5, 1, Short.MAX_VALUE);
pt.writeInt(6, 0, Integer.MIN_VALUE);
pt.writeInt(6, 1, Integer.MAX_VALUE);
pt.writeBinaryInt(7, 0, Integer.MIN_VALUE);
pt.writeBinaryInt(7, 1, Integer.MAX_VALUE);
pt.writeLong(8, 0, Long.MIN_VALUE);
pt.writeLong(8, 1, Long.MAX_VALUE);
pt.writeBinaryLong(9, 0, Long.MIN_VALUE);
pt.writeBinaryLong(9, 1, Long.MAX_VALUE);
pt.writeFloat(10, 0, -Float.MAX_VALUE);
pt.writeFloat(10, 1, Float.NaN);
pt.writeBinaryFloat(11, 0, -Float.MAX_VALUE);
pt.writeBinaryFloat(11, 1, Float.NaN);
pt.writeDouble(12, 0, -Double.MAX_VALUE);
pt.writeDouble(12, 1, Double.NaN);
pt.writeBinaryDouble(13, 0, -Double.MAX_VALUE);
pt.writeBinaryDouble(13, 1, Double.NaN);
pt.writeString(14, 0, "");
pt.writeString(14, 1, testS);
Test.ensureEqual(pt.readBoolean(0, 0), true, "");
Test.ensureEqual(pt.readBoolean(0, 1), false, "");
Test.ensureEqual(pt.readByte(1, 0), Byte.MIN_VALUE, "");
Test.ensureEqual(pt.readByte(1, 1), Byte.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryByte(2, 0), Byte.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryByte(2, 1), Byte.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryChar(3, 0), ' ', "");
Test.ensureEqual(pt.readBinaryChar(3, 1), '\u0F22', "");
Test.ensureEqual(pt.readShort(4, 0), Short.MIN_VALUE, "");
Test.ensureEqual(pt.readShort(4, 1), Short.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryShort(5, 0), Short.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryShort(5, 1), Short.MAX_VALUE, "");
Test.ensureEqual(pt.readInt(6, 0), Integer.MIN_VALUE, "");
Test.ensureEqual(pt.readInt(6, 1), Integer.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryInt(7, 0), Integer.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryInt(7, 1), Integer.MAX_VALUE, "");
Test.ensureEqual(pt.readLong(8, 0), Long.MIN_VALUE, "");
Test.ensureEqual(pt.readLong(8, 1), Long.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryLong(9, 0), Long.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryLong(9, 1), Long.MAX_VALUE, "");
Test.ensureEqual(pt.readFloat(10, 0), -Float.MAX_VALUE, "");
Test.ensureEqual(pt.readFloat(10, 1), Float.NaN, "");
Test.ensureEqual(pt.readBinaryFloat(11, 0), -Float.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryFloat(11, 1), Float.NaN, "");
Test.ensureEqual(pt.readDouble(12, 0), -Double.MAX_VALUE, "");
Test.ensureEqual(pt.readDouble(12, 1), Double.NaN, "");
Test.ensureEqual(pt.readBinaryDouble(13, 0), -Double.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryDouble(13, 1), Double.NaN, "");
Test.ensureEqual(pt.readString(14, 0), "", "");
// only 18 char returned because one takes 3 bytes in UTF-8
Test.ensureEqual(pt.readString(14, 1), testS.substring(0, 18), "");
pt.close();
// reopen the file data still there?
pt = new PersistentTable(name, "rw", widths);
Test.ensureEqual(pt.nRows(), 2, "");
Test.ensureEqual(pt.readBoolean(0, 0), true, "");
Test.ensureEqual(pt.readBoolean(0, 1), false, "");
Test.ensureEqual(pt.readByte(1, 0), Byte.MIN_VALUE, "");
Test.ensureEqual(pt.readByte(1, 1), Byte.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryByte(2, 0), Byte.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryByte(2, 1), Byte.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryChar(3, 0), ' ', "");
Test.ensureEqual(pt.readBinaryChar(3, 1), '\u0F22', "");
Test.ensureEqual(pt.readShort(4, 0), Short.MIN_VALUE, "");
Test.ensureEqual(pt.readShort(4, 1), Short.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryShort(5, 0), Short.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryShort(5, 1), Short.MAX_VALUE, "");
Test.ensureEqual(pt.readInt(6, 0), Integer.MIN_VALUE, "");
Test.ensureEqual(pt.readInt(6, 1), Integer.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryInt(7, 0), Integer.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryInt(7, 1), Integer.MAX_VALUE, "");
Test.ensureEqual(pt.readLong(8, 0), Long.MIN_VALUE, "");
Test.ensureEqual(pt.readLong(8, 1), Long.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryLong(9, 0), Long.MIN_VALUE, "");
Test.ensureEqual(pt.readBinaryLong(9, 1), Long.MAX_VALUE, "");
Test.ensureEqual(pt.readFloat(10, 0), -Float.MAX_VALUE, "");
Test.ensureEqual(pt.readFloat(10, 1), Float.NaN, "");
Test.ensureEqual(pt.readBinaryFloat(11, 0), -Float.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryFloat(11, 1), Float.NaN, "");
Test.ensureEqual(pt.readDouble(12, 0), -Double.MAX_VALUE, "");
Test.ensureEqual(pt.readDouble(12, 1), Double.NaN, "");
Test.ensureEqual(pt.readBinaryDouble(13, 0), -Double.MAX_VALUE, "");
Test.ensureEqual(pt.readBinaryDouble(13, 1), Double.NaN, "");
Test.ensureEqual(pt.readString(14, 0), "", "");
// only 18 char returned because one takes 3 bytes in UTF-8
Test.ensureEqual(pt.readString(14, 1), testS.substring(0, 18), "");
pt.close();
String modes[] = {"rw", "rw", "rws", "rwd"};
n = 1000;
for (int mode = 0; mode < modes.length; mode++) {
File2.delete(name);
pt =
new PersistentTable(
name,
modes[mode],
new int[] {80, BINARY_DOUBLE_LENGTH, DOUBLE_LENGTH, BINARY_INT_LENGTH, INT_LENGTH});
pt.addRows(n);
if (mode == 1) String2.log("*** Note: 2nd rw test uses flush()");
// string speed test
time = System.currentTimeMillis();
long modeTime = System.currentTimeMillis();
for (int i = 0; i < n; i++) pt.writeString(0, i, testS + i);
if (mode == 1) pt.flush();
time = System.currentTimeMillis();
String2.log(
"\n"
+ modes[mode]
+ " time to write "
+ n
+ " Strings="
+ (System.currentTimeMillis() - time)
+ " ("
+ new int[] {0, 0, 0, 0}[mode]
+ "ms)"); // java 1.6 0,0,0,0
for (int i = 0; i < n; i++) {
int tRow = Math2.random(n);
Test.ensureEqual(pt.readString(0, tRow), testS + tRow, "");
}
String2.log(
modes[mode]
+ " time to read "
+ n
+ " Strings="
+ (System.currentTimeMillis() - time)
+ " ("
+ new int[] {15, 16, 47, 15}[mode]
