diff options
Diffstat (limited to 'src/jogl/classes/com/jogamp')
3 files changed, 359 insertions, 358 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/PNGPixelRect.java b/src/jogl/classes/com/jogamp/opengl/util/PNGPixelRect.java new file mode 100644 index 000000000..1bbc12f32 --- /dev/null +++ b/src/jogl/classes/com/jogamp/opengl/util/PNGPixelRect.java @@ -0,0 +1,335 @@ +/** + * Copyright 2012 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ +package com.jogamp.opengl.util; + +import java.io.BufferedInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.nio.ByteBuffer; + +import javax.media.nativewindow.util.Dimension; +import javax.media.nativewindow.util.DimensionImmutable; +import javax.media.nativewindow.util.PixelFormat; +import javax.media.nativewindow.util.PixelRectangle; +import javax.media.nativewindow.util.PixelFormatUtil; + +import jogamp.opengl.Debug; +import jogamp.opengl.util.pngj.ImageInfo; +import jogamp.opengl.util.pngj.ImageLine; +import jogamp.opengl.util.pngj.ImageLineHelper; +import jogamp.opengl.util.pngj.PngReader; +import jogamp.opengl.util.pngj.PngWriter; +import jogamp.opengl.util.pngj.chunks.PngChunkPLTE; +import jogamp.opengl.util.pngj.chunks.PngChunkTRNS; +import jogamp.opengl.util.pngj.chunks.PngChunkTextVar; + +import com.jogamp.common.nio.Buffers; +import com.jogamp.common.util.IOUtil; + +public class PNGPixelRect extends PixelRectangle.GenericPixelRect { + private static final boolean DEBUG = Debug.debug("PNG"); + + /** + * Reads a PNG image from the specified InputStream. + * <p> + * Implicitly converts the image to match the desired: + * <ul> + * <li>{@link PixelFormat}, see {@link #getPixelformat()}</li> + * <li><code>destStrideInBytes</code>, see {@link #getStride()}</li> + * <li><code>destIsGLOriented</code>, see {@link #isGLOriented()}</li> + * </ul> + * </p> + * + * @param in input stream + * @param destFmt desired destination {@link PixelFormat} incl. conversion, maybe <code>null</code> to use source {@link PixelFormat} + * @param destDirectBuffer if true, using a direct NIO buffer, otherwise an array backed buffer + * @param destMinStrideInBytes used if greater than PNG's stride, otherwise using PNG's stride. Stride is width * bytes-per-pixel. + * @param destIsGLOriented + * @return the newly created PNGPixelRect instance + * @throws IOException + */ + public static PNGPixelRect read(final InputStream in, + final PixelFormat ddestFmt, final boolean destDirectBuffer, final int destMinStrideInBytes, + final boolean destIsGLOriented) throws IOException { + final PngReader pngr = new PngReader(new BufferedInputStream(in), null); + final ImageInfo imgInfo = pngr.imgInfo; + final PngChunkPLTE plte = pngr.getMetadata().getPLTE(); + final PngChunkTRNS trns = pngr.getMetadata().getTRNS(); + final boolean indexed = imgInfo.indexed; + final boolean hasAlpha = indexed ? ( trns != null ) : imgInfo.alpha ; + + if(DEBUG) { + System.err.println("PNGPixelRect: "+imgInfo); + } + final int channels = indexed ? ( hasAlpha ? 4 : 3 ) : imgInfo.channels ; + final boolean isGrayAlpha = 2 == channels && imgInfo.greyscale && imgInfo.alpha; + if ( ! ( 1 == channels || 3 == channels || 4 == channels || isGrayAlpha ) ) { + throw new RuntimeException("PNGPixelRect can only handle Lum/RGB/RGBA [1/3/4 channels] or Lum+A (GA) images for now. Channels "+channels + " Paletted: " + indexed); + } + final int bytesPerPixel = indexed ? channels : imgInfo.bytesPixel ; + if ( ! ( 1 == bytesPerPixel || 3 == bytesPerPixel || 4 == bytesPerPixel || isGrayAlpha ) ) { + throw new RuntimeException("PNGPixelRect can only handle Lum/RGB/RGBA [1/3/4 bpp] images for now. BytesPerPixel "+bytesPerPixel); + } + if( channels != bytesPerPixel ) { + throw new RuntimeException("PNGPixelRect currently only handles Channels [1/3/4] == BytePerPixel [1/3/4], channels: "+channels+", bytesPerPixel "+bytesPerPixel); + } + final int width = imgInfo.cols; + final int height = imgInfo.rows; + final double dpiX, dpiY; + { + final double[] dpi = pngr.getMetadata().getDpi(); + dpiX = dpi[0]; + dpiY = dpi[1]; + } + final PixelFormat srcFmt; + if ( indexed ) { + if ( hasAlpha ) { + srcFmt = PixelFormat.RGBA8888; + } else { + srcFmt = PixelFormat.RGB888; + } + } else { + switch( channels ) { + case 1: srcFmt = PixelFormat.LUMINANCE; break; + case 2: srcFmt = isGrayAlpha ? PixelFormat.LUMINANCE : null; break; + case 3: srcFmt = PixelFormat.RGB888; break; + case 4: srcFmt = PixelFormat.RGBA8888; break; + default: srcFmt = null; + } + if( null == srcFmt ) { + throw new InternalError("XXX: channels: "+channels+", bytesPerPixel "+bytesPerPixel); + } + } + final PixelFormat destFmt; + if( null == ddestFmt ) { + if( isGrayAlpha ) { + destFmt = PixelFormat.BGRA8888; // save alpha value on gray-alpha + } else { + destFmt = srcFmt; // 1:1 + } + } else { + destFmt = ddestFmt; // user choice + } + final int destStrideInBytes = Math.max(destMinStrideInBytes, destFmt.bytesPerPixel() * width); + final ByteBuffer destPixels = destDirectBuffer ? Buffers.newDirectByteBuffer(destStrideInBytes * height) : + ByteBuffer.allocate(destStrideInBytes * height); + { + final int reqBytes = destStrideInBytes * height; + if( destPixels.limit() < reqBytes ) { + throw new IndexOutOfBoundsException("Dest buffer has insufficient bytes left, needs "+reqBytes+": "+destPixels); + } + } + final boolean vert_flip = destIsGLOriented; + + int[] rgbaScanline = indexed ? new int[width * channels] : null; + if(DEBUG) { + System.err.println("PNGPixelRect: indexed "+indexed+", alpha "+hasAlpha+", grayscale "+imgInfo.greyscale+", channels "+channels+"/"+imgInfo.channels+ + ", bytesPerPixel "+bytesPerPixel+"/"+imgInfo.bytesPixel+ + ", grayAlpha "+isGrayAlpha+", pixels "+width+"x"+height+", dpi "+dpiX+"x"+dpiY+", format "+srcFmt); + System.err.println("PNGPixelRect: destFormat "+destFmt+" ("+ddestFmt+", bytesPerPixel "+destFmt.bytesPerPixel()+", fast-path "+(destFmt==srcFmt)+"), destDirectBuffer "+destDirectBuffer+", destIsGLOriented (flip) "+destIsGLOriented); + System.err.println("PNGPixelRect: destStrideInBytes "+destStrideInBytes+" (destMinStrideInBytes "+destMinStrideInBytes+")"); + } + + for (int row = 0; row < height; row++) { + final ImageLine l1 = pngr.readRow(row); + int lineOff = 0; + int dataOff = vert_flip ? ( height - 1 - row ) * destStrideInBytes : row * destStrideInBytes; + if( indexed ) { + for (int j = width - 1; j >= 0; j--) { + rgbaScanline = ImageLineHelper.palette2rgb(l1, plte, trns, rgbaScanline); // reuse rgbaScanline and update if resized + dataOff = getPixelRGBA8ToAny(destFmt, destPixels, dataOff, rgbaScanline, lineOff, hasAlpha); + lineOff += bytesPerPixel; + } + } else if( 1 == channels ) { + for (int j = width - 1; j >= 0; j--) { + dataOff = getPixelLUMToAny(destFmt, destPixels, dataOff, (byte)l1.scanline[lineOff++], (byte)0xff); // Luminance, 1 bytesPerPixel + } + } else if( isGrayAlpha ) { + for (int j = width - 1; j >= 0; j--) { + dataOff = getPixelLUMToAny(destFmt, destPixels, dataOff, (byte)l1.scanline[lineOff++], (byte)l1.scanline[lineOff++]); // Luminance+Alpha, 2 bytesPerPixel + } + } else if( srcFmt == destFmt ) { // fast-path + for (int j = width - 1; j >= 0; j--) { + dataOff = getPixelRGBSame(destPixels, dataOff, l1.scanline, lineOff, bytesPerPixel); + lineOff += bytesPerPixel; + } + } else { + for (int j = width - 1; j >= 0; j--) { + dataOff = getPixelRGBA8ToAny(destFmt, destPixels, dataOff, l1.scanline, lineOff, hasAlpha); + lineOff += bytesPerPixel; + } + } + } + pngr.end(); + + return new PNGPixelRect(destFmt, new Dimension(width, height), destStrideInBytes, destIsGLOriented, destPixels, dpiX, dpiY); + } + + private static final int getPixelLUMToAny(PixelFormat dest_fmt, ByteBuffer d, int dOff, byte lum, byte alpha) { + switch(dest_fmt) { + case LUMINANCE: + d.put(dOff++, lum); + break; + case BGR888: + case RGB888: + d.put(dOff++, lum); + d.put(dOff++, lum); + d.put(dOff++, lum); + break; + case ABGR8888: + case ARGB8888: + d.put(dOff++, alpha); // A + d.put(dOff++, lum); + d.put(dOff++, lum); + d.put(dOff++, lum); + break; + case BGRA8888: + case RGBA8888: + d.put(dOff++, lum); + d.put(dOff++, lum); + d.put(dOff++, lum); + d.put(dOff++, alpha); // A + break; + default: + throw new InternalError("Unhandled format "+dest_fmt); + } + return dOff; + } + private static final int getPixelRGBA8ToAny(final PixelFormat dest_fmt, final ByteBuffer d, int dOff, final int[] scanline, final int lineOff, final boolean srcHasAlpha) { + final int p = PixelFormatUtil.convertToInt32(dest_fmt, (byte)scanline[lineOff], // R + (byte)scanline[lineOff+1], // G + (byte)scanline[lineOff+2], // B + srcHasAlpha ? (byte)scanline[lineOff+3] : (byte)0xff); // A + final int dbpp = dest_fmt.bytesPerPixel(); + d.put(dOff++, (byte) ( p )); // 1 + if( 1 < dbpp ) { + d.put(dOff++, (byte) ( p >>> 8 )); // 2 + d.put(dOff++, (byte) ( p >>> 16 )); // 3 + if( 4 == dbpp ) { + d.put(dOff++, (byte) ( p >>> 24 )); // 4 + } + } + return dOff; + } + private static final int getPixelRGBSame(final ByteBuffer d, int dOff, final int[] scanline, final int lineOff, final int bpp) { + d.put(dOff++, (byte)scanline[lineOff]); // R + if( 1 < bpp ) { + d.put(dOff++, (byte)scanline[lineOff + 1]); // G + d.put(dOff++, (byte)scanline[lineOff + 2]); // B + if( 4 == bpp ) { + d.put(dOff++, (byte)scanline[lineOff + 3]); // A + } + } + return dOff; + } + private int setPixelRGBA8(final ImageLine line, final int lineOff, final ByteBuffer d, final int dOff, final int bytesPerPixel, final boolean hasAlpha) { + final int b = hasAlpha ? 4-1 : 3-1; + if( d.limit() <= dOff + b ) { + throw new IndexOutOfBoundsException("Buffer has unsufficient bytes left, needs ["+dOff+".."+(dOff+b)+"]: "+d); + } + final int p = PixelFormatUtil.convertToInt32(hasAlpha ? PixelFormat.RGBA8888 : PixelFormat.RGB888, pixelformat, d, dOff); + line.scanline[lineOff ] = 0xff & p; // R + line.scanline[lineOff + 1] = 0xff & ( p >>> 8 ); // G + line.scanline[lineOff + 2] = 0xff & ( p >>> 16 ); // B + if(hasAlpha) { + line.scanline[lineOff + 3] = 0xff & ( p >>> 24 ); // A + } + return dOff + pixelformat.bytesPerPixel(); + } + + /** + * Creates a PNGPixelRect from data supplied by the end user. Shares + * data with the passed ByteBuffer. + * + * @param pixelformat + * @param size + * @param strideInBytes + * @param isGLOriented see {@link #isGLOriented()}. + * @param pixels + * @param dpiX + * @param dpiY + */ + public PNGPixelRect(final PixelFormat pixelformat, final DimensionImmutable size, + final int strideInBytes, final boolean isGLOriented, final ByteBuffer pixels, + final double dpiX, final double dpiY) { + super(pixelformat, size, strideInBytes, isGLOriented, pixels); + this.dpi = new double[] { dpiX, dpiY }; + } + public PNGPixelRect(final PixelRectangle src, final double dpiX, final double dpiY) { + super(src); + this.dpi = new double[] { dpiX, dpiY }; + } + private final double[] dpi; + + /** Returns the dpi of the image. */ + public double[] getDpi() { return dpi; } + + public void write(final OutputStream outstream, final boolean closeOutstream) throws IOException { + final int width = size.getWidth(); + final int height = size.getHeight(); + final int bytesPerPixel = pixelformat.bytesPerPixel(); + final ImageInfo imi = new ImageInfo(width, height, 8 /* bitdepth */, + (4 == bytesPerPixel) ? true : false /* alpha */, + (1 == bytesPerPixel) ? true : false /* grayscale */, + false /* indexed */); + + // open image for writing to a output stream + try { + final PngWriter png = new PngWriter(outstream, imi); + // add some optional metadata (chunks) + png.getMetadata().setDpi(dpi[0], dpi[1]); + png.getMetadata().setTimeNow(0); // 0 seconds fron now = now + png.getMetadata().setText(PngChunkTextVar.KEY_Title, "JogAmp PNGPixelRect"); + // png.getMetadata().setText("my key", "my text"); + final boolean hasAlpha = 4 == bytesPerPixel; + + final ImageLine l1 = new ImageLine(imi); + for (int row = 0; row < height; row++) { + int dataOff = isGLOriented ? ( height - 1 - row ) * strideInBytes : row * strideInBytes; + int lineOff = 0; + if(1 == bytesPerPixel) { + for (int j = width - 1; j >= 0; j--) { + l1.scanline[lineOff++] = pixels.get(dataOff++); // // Luminance, 1 bytesPerPixel + } + } else { + for (int j = width - 1; j >= 0; j--) { + dataOff = setPixelRGBA8(l1, lineOff, pixels, dataOff, bytesPerPixel, hasAlpha); + lineOff += bytesPerPixel; + } + } + png.writeRow(l1, row); + } + png.end(); + } finally { + if( closeOutstream ) { + IOUtil.close(outstream, false); + } + } + } +} diff --git a/src/jogl/classes/com/jogamp/opengl/util/texture/TextureIO.java b/src/jogl/classes/com/jogamp/opengl/util/texture/TextureIO.java index 67ab5176d..0cde24db4 100644 --- a/src/jogl/classes/com/jogamp/opengl/util/texture/TextureIO.java +++ b/src/jogl/classes/com/jogamp/opengl/util/texture/TextureIO.java @@ -41,10 +41,12 @@ package com.jogamp.opengl.util.texture; import java.io.BufferedInputStream; +import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; +import java.io.OutputStream; import java.net.URL; import java.nio.Buffer; import java.nio.ByteBuffer; @@ -52,9 +54,10 @@ import java.util.ArrayList; import java.util.Iterator; import java.util.List; +import javax.media.nativewindow.util.Dimension; +import javax.media.nativewindow.util.PixelFormat; import javax.media.opengl.GL; import javax.media.opengl.GL2; -import javax.media.opengl.GL2ES2; import javax.media.opengl.GL2GL3; import javax.media.opengl.GLContext; import javax.media.opengl.GLException; @@ -63,11 +66,11 @@ import javax.media.opengl.GLProfile; import jogamp.opengl.Debug; import com.jogamp.common.util.IOUtil; +import com.jogamp.opengl.util.PNGPixelRect; import com.jogamp.opengl.util.GLPixelBuffer.GLPixelAttributes; import com.jogamp.opengl.util.texture.spi.DDSImage; import com.jogamp.opengl.util.texture.spi.JPEGImage; import com.jogamp.opengl.util.texture.spi.NetPbmTextureWriter; -import com.jogamp.opengl.util.texture.spi.PNGImage; import com.jogamp.opengl.util.texture.spi.SGIImage; import com.jogamp.opengl.util.texture.spi.TGAImage; import com.jogamp.opengl.util.texture.spi.TextureProvider; @@ -1166,27 +1169,29 @@ public class TextureIO { boolean mipmap, String fileSuffix) throws IOException { if (PNG.equals(fileSuffix)) { - PNGImage image = PNGImage.read(/*glp, */ stream); - if (pixelFormat == 0) { - pixelFormat = image.getGLFormat(); - } - if (internalFormat == 0) { + final PNGPixelRect image = PNGPixelRect.read(stream, null, true /* directBuffer */, 0 /* destMinStrideInBytes */, true /* destIsGLOriented */); + final GLPixelAttributes glpa = GLPixelAttributes.convert(image.getPixelformat(), glp); + if ( 0 == pixelFormat ) { + pixelFormat = glpa.format; + } // else FIXME: Actually not supported w/ preset pixelFormat! + if ( 0 == internalFormat ) { + final boolean hasAlpha = 4 == glpa.bytesPerPixel; if(glp.isGL2ES3()) { - internalFormat = (image.getBytesPerPixel()==4)?GL.GL_RGBA8:GL.GL_RGB8; + internalFormat = hasAlpha ? GL.GL_RGBA8 : GL.GL_RGB8; } else { - internalFormat = (image.getBytesPerPixel()==4)?GL.GL_RGBA:GL.GL_RGB; + internalFormat = hasAlpha ? GL.GL_RGBA : GL.GL_RGB; } } return new TextureData(glp, internalFormat, - image.getWidth(), - image.getHeight(), + image.getSize().getWidth(), + image.getSize().getHeight(), 0, pixelFormat, - image.getGLType(), + glpa.type, mipmap, false, false, - image.getData(), + image.getPixels(), null); } @@ -1392,29 +1397,7 @@ public class TextureIO { final int pixelFormat = pixelAttribs.format; final int pixelType = pixelAttribs.type; final int bytesPerPixel = pixelAttribs.bytesPerPixel; - final boolean reversedChannels; - switch(pixelFormat) { - case GL.GL_ALPHA: - case GL.GL_LUMINANCE: - case GL2ES2.GL_RED: - reversedChannels=false; - break; - case GL.GL_RGB: - reversedChannels=false; - break; - case GL.GL_RGBA: - reversedChannels=false; - break; - case GL2.GL_BGR: - reversedChannels=true; - break; - case GL.GL_BGRA: - reversedChannels=true; - break; - default: - reversedChannels=false; - break; - } + final PixelFormat pixFmt = pixelAttribs.getPixelFormat(); if ( ( 1 == bytesPerPixel || 3 == bytesPerPixel || 4 == bytesPerPixel) && ( pixelType == GL.GL_BYTE || pixelType == GL.GL_UNSIGNED_BYTE)) { ByteBuffer buf = (ByteBuffer) data.getBuffer(); @@ -1423,9 +1406,11 @@ public class TextureIO { } buf.rewind(); - PNGImage image = PNGImage.createFromData(data.getWidth(), data.getHeight(), -1f, -1f, - bytesPerPixel, reversedChannels, !data.getMustFlipVertically(), buf); - image.write(file, true); + final PNGPixelRect image = new PNGPixelRect(pixFmt, new Dimension(data.getWidth(), data.getHeight()), + 0 /* stride */, true /* isGLOriented */, buf /* pixels */, + -1f, -1f); + final OutputStream outs = new BufferedOutputStream(IOUtil.getFileOutputStream(file, true /* allowOverwrite */)); + image.write(outs, true /* close */); return true; } throw new IOException("PNG writer doesn't support this pixel format 0x"+Integer.toHexString(pixelFormat)+ diff --git a/src/jogl/classes/com/jogamp/opengl/util/texture/spi/PNGImage.java b/src/jogl/classes/com/jogamp/opengl/util/texture/spi/PNGImage.java deleted file mode 100644 index 71cbbf97e..000000000 --- a/src/jogl/classes/com/jogamp/opengl/util/texture/spi/PNGImage.java +++ /dev/null @@ -1,319 +0,0 @@ -/** - * Copyright 2012 JogAmp Community. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, are - * permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this list of - * conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, this list - * of conditions and the following disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * The views and conclusions contained in the software and documentation are those of the - * authors and should not be interpreted as representing official policies, either expressed - * or implied, of JogAmp Community. - */ -package com.jogamp.opengl.util.texture.spi; - -import java.io.BufferedInputStream; -import java.io.BufferedOutputStream; -import java.io.File; -import java.io.IOException; -import java.io.InputStream; -import java.io.OutputStream; -import java.nio.ByteBuffer; - -import javax.media.opengl.GL; - -import jogamp.opengl.Debug; -import jogamp.opengl.util.pngj.ImageInfo; -import jogamp.opengl.util.pngj.ImageLine; -import jogamp.opengl.util.pngj.ImageLineHelper; -import jogamp.opengl.util.pngj.PngReader; -import jogamp.opengl.util.pngj.PngWriter; -import jogamp.opengl.util.pngj.chunks.PngChunkPLTE; -import jogamp.opengl.util.pngj.chunks.PngChunkTRNS; -import jogamp.opengl.util.pngj.chunks.PngChunkTextVar; - -import com.jogamp.common.nio.Buffers; -import com.jogamp.common.util.IOUtil; - -public class PNGImage { - private static final boolean DEBUG = Debug.debug("PNGImage"); - - /** - * Creates a PNGImage from data supplied by the end user. Shares - * data with the passed ByteBuffer. Assumes the data is already in - * the correct byte order for writing to disk, i.e., LUMINANCE, RGB or RGBA. - * Orientation is <i>bottom-to-top</i> (OpenGL coord. default) - * or <i>top-to-bottom</i> depending on <code>isGLOriented</code>. - * - * @param width - * @param height - * @param dpiX - * @param dpiY - * @param bytesPerPixel - * @param reversedChannels - * @param isGLOriented see {@link #isGLOriented()}. - * @param data - * @return - */ - public static PNGImage createFromData(int width, int height, double dpiX, double dpiY, - int bytesPerPixel, boolean reversedChannels, boolean isGLOriented, ByteBuffer data) { - return new PNGImage(width, height, dpiX, dpiY, bytesPerPixel, reversedChannels, isGLOriented, data); - } - - /** - * Reads a PNG image from the specified InputStream. - * <p> - * Implicitly flip image to GL orientation, see {@link #isGLOriented()}. - * </p> - */ - public static PNGImage read(InputStream in) throws IOException { - return new PNGImage(in); - } - - /** Reverse read and store, implicitly flip image to GL orientation, see {@link #isGLOriented()}. */ - private static final int getPixelRGBA8(ByteBuffer d, int dOff, int[] scanline, int lineOff, boolean hasAlpha) { - final int b = hasAlpha ? 4-1 : 3-1; - if( d.limit() <= dOff || dOff - b < 0 ) { - throw new IndexOutOfBoundsException("Buffer has unsufficient bytes left, needs ["+(dOff-b)+".."+dOff+"]: "+d); - } - if(hasAlpha) { - d.put(dOff--, (byte)scanline[lineOff + 3]); // A - } - d.put(dOff--, (byte)scanline[lineOff + 2]); // B - d.put(dOff--, (byte)scanline[lineOff + 1]); // G - d.put(dOff--, (byte)scanline[lineOff ]); // R - return dOff; - } - - /** Reverse write and store, implicitly flip image from current orientation, see {@link #isGLOriented()}. Handle reversed channels (BGR[A]). */ - private int setPixelRGBA8(ImageLine line, int lineOff, ByteBuffer d, int dOff, boolean hasAlpha) { - final int b = hasAlpha ? 4-1 : 3-1; - if( d.limit() <= dOff + b ) { - throw new IndexOutOfBoundsException("Buffer has unsufficient bytes left, needs ["+dOff+".."+(dOff+b)+"]: "+d); - } - if( reversedChannels ) { - if(hasAlpha) { - line.scanline[lineOff + 3] = d.get(dOff++); // A - } - line.scanline[lineOff + 2] = d.get(dOff++); // R - line.scanline[lineOff + 1] = d.get(dOff++); // G - line.scanline[lineOff ] = d.get(dOff++); // B - } else { - line.scanline[lineOff ] = d.get(dOff++); // R - line.scanline[lineOff + 1] = d.get(dOff++); // G - line.scanline[lineOff + 2] = d.get(dOff++); // B - if(hasAlpha) { - line.scanline[lineOff + 3] = d.get(dOff++); // A - } - } - return isGLOriented ? dOff - bytesPerPixel - bytesPerPixel : dOff; - } - - private PNGImage(int width, int height, double dpiX, double dpiY, int bytesPerPixel, boolean reversedChannels, boolean isGLOriented, ByteBuffer data) { - pixelWidth=width; - pixelHeight=height; - dpi = new double[] { dpiX, dpiY }; - if(4 == bytesPerPixel) { - glFormat = GL.GL_RGBA; - } else if (3 == bytesPerPixel) { - glFormat = GL.GL_RGB; - } else { - throw new InternalError("XXX: bytesPerPixel "+bytesPerPixel); - } - this.bytesPerPixel = bytesPerPixel; - this.reversedChannels = reversedChannels; - this.isGLOriented = isGLOriented; - this.data = data; - } - - private PNGImage(InputStream in) { - final PngReader pngr = new PngReader(new BufferedInputStream(in), null); - final ImageInfo imgInfo = pngr.imgInfo; - final PngChunkPLTE plte = pngr.getMetadata().getPLTE(); - final PngChunkTRNS trns = pngr.getMetadata().getTRNS(); - final boolean indexed = imgInfo.indexed; - final boolean hasAlpha = indexed ? ( trns != null ) : imgInfo.alpha ; - - final int channels = indexed ? ( hasAlpha ? 4 : 3 ) : imgInfo.channels ; - if ( ! ( 1 == channels || 3 == channels || 4 == channels ) ) { - throw new RuntimeException("PNGImage can only handle Lum/RGB/RGBA [1/3/4 channels] images for now. Channels "+channels + " Paletted: " + indexed); - } - - bytesPerPixel = indexed ? channels : imgInfo.bytesPixel ; - if ( ! ( 1 == bytesPerPixel || 3 == bytesPerPixel || 4 == bytesPerPixel ) ) { - throw new RuntimeException("PNGImage can only handle Lum/RGB/RGBA [1/3/4 bpp] images for now. BytesPerPixel "+bytesPerPixel); - } - if( channels != bytesPerPixel ) { - throw new RuntimeException("PNGImage currently only handles Channels [1/3/4] == BytePerPixel [1/3/4], channels: "+channels+", bytesPerPixel "+bytesPerPixel); - } - pixelWidth = imgInfo.cols; - pixelHeight = imgInfo.rows; - dpi = new double[2]; - { - final double[] dpi2 = pngr.getMetadata().getDpi(); - dpi[0]=dpi2[0]; - dpi[1]=dpi2[1]; - } - if ( indexed ) { - if ( hasAlpha ) { - glFormat = GL.GL_RGBA; - } else { - glFormat = GL.GL_RGB; - } - } else { - switch( channels ) { - case 1: glFormat = GL.GL_LUMINANCE; break; - case 3: glFormat = GL.GL_RGB; break; - case 4: glFormat = GL.GL_RGBA; break; - default: throw new InternalError("XXX: channels: "+channels+", bytesPerPixel "+bytesPerPixel); - } - } - if(DEBUG) { - System.err.println("PNGImage: "+imgInfo); - System.err.println("PNGImage: indexed "+indexed+", alpha "+hasAlpha+", channels "+channels+"/"+imgInfo.channels+ - ", bytesPerPixel "+bytesPerPixel+"/"+imgInfo.bytesPixel+ - ", pixels "+pixelWidth+"x"+pixelHeight+", dpi "+dpi[0]+"x"+dpi[1]+", glFormat 0x"+Integer.toHexString(glFormat)); - } - - data = Buffers.newDirectByteBuffer(bytesPerPixel * pixelWidth * pixelHeight); - reversedChannels = false; // RGB[A] - isGLOriented = true; - int dataOff = bytesPerPixel * pixelWidth * pixelHeight - 1; // start at end-of-buffer, reverse store - - int[] rgbaScanline = indexed ? new int[imgInfo.cols * channels] : null; - - for (int row = 0; row < pixelHeight; row++) { - final ImageLine l1 = pngr.readRow(row); - int lineOff = ( pixelWidth - 1 ) * bytesPerPixel ; // start w/ last pixel in line, reverse read (PNG top-left -> OpenGL bottom-left origin) - if( indexed ) { - for (int j = pixelWidth - 1; j >= 0; j--) { - rgbaScanline = ImageLineHelper.palette2rgb(l1, plte, trns, rgbaScanline); // reuse rgbaScanline and update if resized - dataOff = getPixelRGBA8(data, dataOff, rgbaScanline, lineOff, hasAlpha); - lineOff -= bytesPerPixel; - } - } else if( 1 == channels ) { - for (int j = pixelWidth - 1; j >= 0; j--) { - data.put(dataOff--, (byte)l1.scanline[lineOff--]); // Luminance, 1 bytesPerPixel - } - } else { - for (int j = pixelWidth - 1; j >= 0; j--) { - dataOff = getPixelRGBA8(data, dataOff, l1.scanline, lineOff, hasAlpha); - lineOff -= bytesPerPixel; - } - } - } - pngr.end(); - } - private final int pixelWidth, pixelHeight, glFormat, bytesPerPixel; - private final boolean reversedChannels; - private final boolean isGLOriented; - private final double[] dpi; - private final ByteBuffer data; - - /** Returns the width of the image. */ - public int getWidth() { return pixelWidth; } - - /** Returns the height of the image. */ - public int getHeight() { return pixelHeight; } - - /** Returns true if data has the channels reversed to BGR or BGRA, otherwise RGB or RGBA is expected. */ - public boolean getHasReversedChannels() { return reversedChannels; } - - /** - * Returns <code>true</code> if the drawable is rendered in - * OpenGL's coordinate system, <i>origin at bottom left</i>. - * Otherwise returns <code>false</code>, i.e. <i>origin at top left</i>. - * <p> - * Default impl. is <code>true</code>, i.e. OpenGL coordinate system. - * </p> - */ - public boolean isGLOriented() { return isGLOriented; } - - /** Returns the dpi of the image. */ - public double[] getDpi() { return dpi; } - - /** Returns the OpenGL format for this texture; e.g. GL.GL_LUMINANCE, GL.GL_RGB or GL.GL_RGBA. */ - public int getGLFormat() { return glFormat; } - - /** Returns the OpenGL data type: GL.GL_UNSIGNED_BYTE. */ - public int getGLType() { return GL.GL_UNSIGNED_BYTE; } - - /** Returns the bytes per pixel */ - public int getBytesPerPixel() { return bytesPerPixel; } - - /** Returns the raw data for this texture in the correct - (bottom-to-top) order for calls to glTexImage2D. */ - public ByteBuffer getData() { return data; } - - public void write(File out, boolean allowOverwrite) throws IOException { - final ImageInfo imi = new ImageInfo(pixelWidth, pixelHeight, 8, (4 == bytesPerPixel) ? true : false); // 8 bits per channel, no alpha - // open image for writing to a output stream - final OutputStream outs = new BufferedOutputStream(IOUtil.getFileOutputStream(out, allowOverwrite)); - try { - final PngWriter png = new PngWriter(outs, imi); - // add some optional metadata (chunks) - png.getMetadata().setDpi(dpi[0], dpi[1]); - png.getMetadata().setTimeNow(0); // 0 seconds fron now = now - png.getMetadata().setText(PngChunkTextVar.KEY_Title, "JogAmp PNGImage"); - // png.getMetadata().setText("my key", "my text"); - final boolean hasAlpha = 4 == bytesPerPixel; - final ImageLine l1 = new ImageLine(imi); - if( isGLOriented ) { - // start at last pixel at end-of-buffer, reverse read (OpenGL bottom-left -> PNG top-left origin) - int dataOff = ( pixelWidth * bytesPerPixel * ( pixelHeight - 1 ) ) + // full lines - 1 line - ( ( pixelWidth - 1 ) * bytesPerPixel ); // one line - 1 pixel - for (int row = 0; row < pixelHeight; row++) { - int lineOff = ( pixelWidth - 1 ) * bytesPerPixel ; // start w/ last pixel in line, reverse store (OpenGL bottom-left -> PNG top-left origin) - if(1 == bytesPerPixel) { - for (int j = pixelWidth - 1; j >= 0; j--) { - l1.scanline[lineOff--] = data.get(dataOff--); // // Luminance, 1 bytesPerPixel - } - } else { - for (int j = pixelWidth - 1; j >= 0; j--) { - dataOff = setPixelRGBA8(l1, lineOff, data, dataOff, hasAlpha); - lineOff -= bytesPerPixel; - } - } - png.writeRow(l1, row); - } - } else { - int dataOff = 0; // start at first pixel at start-of-buffer, normal read (same origin: top-left) - for (int row = 0; row < pixelHeight; row++) { - int lineOff = 0; // start w/ first pixel in line, normal store (same origin: top-left) - if(1 == bytesPerPixel) { - for (int j = pixelWidth - 1; j >= 0; j--) { - l1.scanline[lineOff++] = data.get(dataOff++); // // Luminance, 1 bytesPerPixel - } - } else { - for (int j = pixelWidth - 1; j >= 0; j--) { - dataOff = setPixelRGBA8(l1, lineOff, data, dataOff, hasAlpha); - lineOff += bytesPerPixel; - } - } - png.writeRow(l1, row); - } - } - png.end(); - } finally { - IOUtil.close(outs, false); - } - } - - @Override - public String toString() { return "PNGImage["+pixelWidth+"x"+pixelHeight+", dpi "+dpi[0]+" x "+dpi[1]+", bytesPerPixel "+bytesPerPixel+", reversedChannels "+reversedChannels+", "+data+"]"; } -} |