Java 类android.opengl.ETC1Util.ETC1Texture 实例源码

public static ETC1Texture testSDKETC1ImageCompressor() {

        // RGB_565 is 2 bytes per pixel
        ETC1.encodeImage(buffer, bitmap.getWidth(), bitmap.getHeight(), 2,
                2 * bitmap.getWidth(), compressedImage);

        ETC1Texture texture = new ETC1Texture(bitmap.getWidth(),
                bitmap.getHeight(), compressedImage);

        buffer.rewind();        

        // if (texture != null) {
        // int estimatedMemorySize = ETC1.ETC_PKM_HEADER_SIZE
        // + texture.getHeight() * texture.getWidth() / 2;
        // File f = new
        // File(Environment.getExternalStorageDirectory(),"bmngpkm.pkm");
        // f.delete();
        // f.createNewFile();
        // ETC1Util.writeTexture(texture, new FileOutputStream(f));
        // System.out.println("Texture PKM created ");
        // }
        // System.out.println("Texture PKM creation failed ");

        return texture;
    }

public static ETC1Texture testJavaETC1ImageCompressor() {
    // RGB_565 is 2 bytes per pixel
    JavaETC1.encodeImage(buffer, bitmap.getWidth(), bitmap.getHeight(), 2,
            2 * bitmap.getWidth(), compressedImage);

    ETC1Texture texture = new ETC1Texture(bitmap.getWidth(),
            bitmap.getHeight(), compressedImage);

    buffer.rewind();
    // if (texture != null) {
    // int estimatedMemorySize = ETC1.ETC_PKM_HEADER_SIZE
    // + texture.getHeight() * texture.getWidth() / 2;
    // File f = new
    // File(Environment.getExternalStorageDirectory(),"bmngpkm.pkm");
    // f.delete();
    // f.createNewFile();
    // ETC1Util.writeTexture(texture, new FileOutputStream(f));
    // System.out.println("Texture PKM created ");
    // }
    // System.out.println("Texture PKM creation failed ");

    return texture;
}

private void makeImage(Render render, float angle, String name) throws IOException {
    Bitmap bitmap = render.getImage(angle);
       int dim = bitmap.getHeight();

    ByteBuffer bb = ByteBuffer.allocateDirect(dim * dim * 3);
    for (int y = 0; y < dim; y += 1) {
        for (int x = 0; x < dim; x += 1) {
               int value = bitmap.getPixel(x, y);
            bb.put((byte) (value >> 16));
            bb.put((byte) (value >> 8));
            bb.put((byte) value);
        }
    }
    bb.rewind();
    ETC1Texture compressed = ETC1Util.compressTexture(bb, dim, dim, 3, dim * 3);

    FileOutputStream outFile = openFileOutput(name, Context.MODE_PRIVATE);
    ETC1Util.writeTexture(compressed, outFile);
    outFile.close();
}

public void showEtc1Texture(ETC1Texture texture) {
    int width = texture.getWidth();
       int height = texture.getHeight();
       Buffer data = texture.getData();

    int pixelSize = 2;
       int stride = pixelSize * width;
       ByteBuffer decodedData = ByteBuffer.allocateDirect(stride*height)
           .order(ByteOrder.nativeOrder());
       ETC1.decodeImage((ByteBuffer) data, decodedData, width, height, pixelSize, stride);
       mBitmapOut.copyPixelsFromBuffer(decodedData);
       mDisplayView.invalidate();
}

public static ETC1Texture testRsETC1ImageCompressor(RenderScript rs,
        ScriptC_etc1compressor script) {

    Allocation alloc = Allocation.createFromBitmap(rs, bitmapARGB, MipmapControl.MIPMAP_NONE, Allocation.USAGE_SHARED);

    // RGB_565 is 2 bytes per pixel
    RsETC1.encodeImage(rs, script, alloc, bitmapARGB.getWidth(), bitmapARGB.getHeight(), 4,
            4 * bitmapARGB.getWidth(), compressedImage, null, false, false);

    ETC1Texture texture = new ETC1Texture(bitmapARGB.getWidth(),
            bitmapARGB.getHeight(), compressedImage);

    alloc.destroy();

    // if (texture != null) {
    // int estimatedMemorySize = ETC1.ETC_PKM_HEADER_SIZE
    // + texture.getHeight() * texture.getWidth() / 2;
    // File f = new
    // File(Environment.getExternalStorageDirectory(),"bmngpkm.pkm");
    // f.delete();
    // f.createNewFile();
    // ETC1Util.writeTexture(texture, new FileOutputStream(f));
    // System.out.println("Texture PKM created ");
    // }
    // System.out.println("Texture PKM creation failed ");

    return texture;
}

public static ETC1Texture testRsETC1ImageCompressorWithAlpha(RenderScript rs,
        ScriptC_etc1compressor script) {

    Allocation alloc = Allocation.createFromBitmap(rs, bitmapARGB, MipmapControl.MIPMAP_NONE, Allocation.USAGE_SHARED);

    // RGB_565 is 2 bytes per pixel
    RsETC1.encodeImage(rs, script, alloc, bitmapARGB.getWidth(), bitmapARGB.getHeight(), 4,
            4 * bitmapARGB.getWidth(), compressedImage, compressedImageAlpha, false, true);

    ETC1Texture texture = new ETC1Texture(bitmapARGB.getWidth(),
            bitmapARGB.getHeight(), compressedImage);

    alloc.destroy();

    // if (texture != null) {
    // int estimatedMemorySize = ETC1.ETC_PKM_HEADER_SIZE
    // + texture.getHeight() * texture.getWidth() / 2;
    // File f = new
    // File(Environment.getExternalStorageDirectory(),"bmngpkm.pkm");
    // f.delete();
    // f.createNewFile();
    // ETC1Util.writeTexture(texture, new FileOutputStream(f));
    // System.out.println("Texture PKM created ");
    // }
    // System.out.println("Texture PKM creation failed ");

    return texture;
}

public static ETC1Texture encodeTextureAsETC1_Sdk(InputStream stream)
        throws IOException, FileNotFoundException {
    // stream.reset();
    // stream.mark(1024);
    Options opts = new BitmapFactory.Options();
    //opts.inPremultiplied = false;
    opts.inPreferredConfig = Config.RGB_565;
    Bitmap bitmap = BitmapFactory.decodeStream(stream, null, opts);
    if (bitmap != null) {
        ByteBuffer buffer = ByteBuffer.allocateDirect(
                bitmap.getRowBytes() * bitmap.getHeight()).order(
                ByteOrder.nativeOrder());
        bitmap.copyPixelsToBuffer(buffer);
        buffer.position(0);

        System.out.println("Width : " + bitmap.getWidth());
        System.out.println("Height : " + bitmap.getHeight());
        System.out.println("Config : " + bitmap.getConfig());

        if (bitmap.getConfig() == Bitmap.Config.ARGB_4444
                || bitmap.getConfig() == Bitmap.Config.ARGB_8888) {
            System.out.println("Texture need aplha channel");
            return null;
        }

        final int encodedImageSize = ETC1.getEncodedDataSize(
                bitmap.getWidth(), bitmap.getHeight());
        ByteBuffer compressedImage = ByteBuffer.allocateDirect(
                encodedImageSize).order(ByteOrder.nativeOrder());
        // RGB_565 is 2 bytes per pixel

        ETC1.encodeImage(buffer, bitmap.getWidth(), bitmap.getHeight(),
                2, 2 * bitmap.getWidth(), compressedImage);

        ETC1Texture texture = new ETC1Texture(bitmap.getWidth(),
                bitmap.getHeight(), compressedImage);

        return texture;
    }
    return null;
}

public static ETC1Texture encodeTextureAsETC1_Java(InputStream stream)
        throws IOException, FileNotFoundException {
    // stream.reset();
    // stream.mark(1024);
    Options opts = new BitmapFactory.Options();
    //opts.inPremultiplied = false;
    opts.inPreferredConfig = Config.RGB_565;
    Bitmap bitmap = BitmapFactory.decodeStream(stream, null, opts);
    if (bitmap != null) {
        ByteBuffer buffer = ByteBuffer.allocateDirect(
                bitmap.getRowBytes() * bitmap.getHeight()).order(
                ByteOrder.nativeOrder());
        bitmap.copyPixelsToBuffer(buffer);
        buffer.position(0);

        System.out.println("Width : " + bitmap.getWidth());
        System.out.println("Height : " + bitmap.getHeight());
        System.out.println("Config : " + bitmap.getConfig());

        if (bitmap.getConfig() == Bitmap.Config.ARGB_4444
                || bitmap.getConfig() == Bitmap.Config.ARGB_8888) {
            System.out.println("Texture need aplha channel");
            return null;
        }

        final int encodedImageSize = JavaETC1.getEncodedDataSize(
                bitmap.getWidth(), bitmap.getHeight());
        ByteBuffer compressedImage = ByteBuffer.allocateDirect(
                encodedImageSize).order(ByteOrder.nativeOrder());
        // RGB_565 is 2 bytes per pixel

        JavaETC1.encodeImage(buffer, bitmap.getWidth(), bitmap.getHeight(),
                2, 2 * bitmap.getWidth(), compressedImage);

        ETC1Texture texture = new ETC1Texture(bitmap.getWidth(),
                bitmap.getHeight(), compressedImage);

        return texture;
    }
    return null;
}