Java 打印POS/ESC Apex3图像S.O.S
我有一个Apex3,我能够毫无问题地理解其中的大部分内容,但当涉及到图像时,事情变得非常奇怪(缺乏示例+如何做缺乏一致性) 首先,我尝试了一种天真的方法,尝试通过JPEG和0质量的位图字节[]数组压缩,因为我不介意,使用以下命令: ESC V n1 n2数据 结果不太好 然后我发现有一个适用于apex3的android库,它接受位图并支持打印,但它不起作用,只需打印如下奇怪的符号: 我尝试使用JD gui解码jar源代码,他们似乎对位图字节做了一些工作。这是他们的代码(一段建议代码,如addToDoc(m_Document,ESC+“B”);只需将代码放入ByteArrayOutputStream(反编译):Java 打印POS/ESC Apex3图像S.O.S,java,android,printing,bitmap,thermal-printer,Java,Android,Printing,Bitmap,Thermal Printer,我有一个Apex3,我能够毫无问题地理解其中的大部分内容,但当涉及到图像时,事情变得非常奇怪(缺乏示例+如何做缺乏一致性) 首先,我尝试了一种天真的方法,尝试通过JPEG和0质量的位图字节[]数组压缩,因为我不介意,使用以下命令: ESC V n1 n2数据 结果不太好 然后我发现有一个适用于apex3的android库,它接受位图并支持打印,但它不起作用,只需打印如下奇怪的符号: 我尝试使用JD gui解码jar源代码,他们似乎对位图字节做了一些工作。这是他们的代码(一段建议代码,如addT
public void writeImage(位图imageObject,int printHeadWidth)
抛出IllegalArgumentException
{
if(imageObject==null){
抛出新的IllegalArgumentException(“参数'imageObject'为null”);
}
如果(打印头宽度<1){
抛出新的IllegalArgumentException(“参数'printHeadWidth'必须大于0”);
}
int height=imageObject.getHeight();
int width=imageObject.getWidth();
字节blanklineCount=0;
字节[]数据线=新字节[printHeadWidth+7>>3];
int[]图像数据=新的int[高度*宽度];
getPixels(imageData,0,宽度,0,0,宽度,高度);
addToDoc(m_文件,ESC+“B”);
对于(int row=0;row=打印头宽度){
打破
}
int值=索引+0>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
当前字节=(字节)(当前字节|(设置?-128:0));
值=索引+1<宽度?图像数据[(偏移量+1)]&0xFFFFFF:16777215;
set=(值>>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为64:0));
值=索引+2>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为32:0));
值=索引+3<宽度?图像数据[(偏移量+3)]&0xFFFFFF:16777215;
set=(值>>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为16:0));
值=索引+4>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
当前字节=(字节)(当前字节|(设置为8:0));
值=索引+5<宽度?图像数据[(偏移量+5)]&0xFFFFFF:16777215;
set=(值>>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为4:0));
值=索引+6<宽度?图像数据[(偏移+6)]&0xFFFFFF:16777215;
set=(值>>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为2:0));
值=索引+7<宽度?图像数据[(偏移+7)]&0xFFFFFF:16777215;
set=(值>>0&0xFF)+(值>>8&0xFF)+(值>>16&0xFF)<384;
currentByte=(字节)(currentByte |(设置为1:0));
数据线[(索引>>3)]=当前字节;
空行&=currentByte==0;
}
如果(!空白行)
{
如果(blanklineCount>0)
{
addToDoc(m_文件,“A”);
addToDoc(m_文档,空白行计数);
blanklineCount=0;
}
addToDoc(m_文档,压缩图形行(数据行));
}
其他的
{
blanklineCount=(字节)(blanklineCount+1);
如果(blanklineCount==255)
{
addToDoc(m_文件,“A”);
addToDoc(m_文档,空白行计数);
blanklineCount=0;
}
}
}
如果(blanklineCount>0)
{
addToDoc(m_文件,“A”);
addToDoc(m_文档,空白行计数);
blanklineCount=0;
}
addToDoc(m_文件,ESC+“E”);
}
专用字节[]压缩图形线(字节[]数据线)
{
字节计数=0;
字节currentByte=0;
ByteArrayOutputStream=新的ByteArrayOutputStream(128);
addToDoc(字符串,“G”);
for(int index=0;index0){
addToDoc(字符串,计数);
}
if(rleString.size()>dataline.length+1)
{
reset();
addToDoc(字符串,“U”);
对于(int item=0;item
但我不明白为什么它不起作用
最后,我尝试以相同的算法作为指导使用,但仍然打印随机的奇怪符号。与其浪费时间反编译一些apk,为什么不看看Official SDK?在制造商网页上有一个指向的链接,其中包括一个source
Sample.javapublic void writeImage(Bitmap imageObject, int printHeadWidth)
throws IllegalArgumentException
{
if (imageObject == null) {
throw new IllegalArgumentException("Parameter 'imageObject' was null.");
}
if (printHeadWidth < 1) {
throw new IllegalArgumentException("Parameter 'printHeadWidth' must be greater than 0.");
}
int height = imageObject.getHeight();
int width = imageObject.getWidth();
byte blanklineCount = 0;
byte[] dataline = new byte[printHeadWidth + 7 >> 3];
int[] imageData = new int[height * width];
imageObject.getPixels(imageData, 0, width, 0, 0, width, height);
addToDoc(m_Document, ESC + "B");
for (int row = 0; row < height; row++)
{
boolean blankLine = true;
for (int index = 0; index < width; index += 8)
{
byte currentByte = 0;
int offset = row * width + index;
if (index >= printHeadWidth) {
break;
}
int value = index + 0 < width ? imageData[(offset + 0)] & 0xFFFFFF : 16777215;
boolean set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? -128 : 0));
value = index + 1 < width ? imageData[(offset + 1)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 64 : 0));
value = index + 2 < width ? imageData[(offset + 2)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 32 : 0));
value = index + 3 < width ? imageData[(offset + 3)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 16 : 0));
value = index + 4 < width ? imageData[(offset + 4)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 8 : 0));
value = index + 5 < width ? imageData[(offset + 5)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 4 : 0));
value = index + 6 < width ? imageData[(offset + 6)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 2 : 0));
value = index + 7 < width ? imageData[(offset + 7)] & 0xFFFFFF : 16777215;
set = (value >> 0 & 0xFF) + (value >> 8 & 0xFF) + (value >> 16 & 0xFF) < 384;
currentByte = (byte)(currentByte | (set ? 1 : 0));
dataline[(index >> 3)] = currentByte;
blankLine &= currentByte == 0;
}
if (!blankLine)
{
if (blanklineCount > 0)
{
addToDoc(m_Document, "A");
addToDoc(m_Document, blanklineCount);
blanklineCount = 0;
}
addToDoc(m_Document, compressGraphicLine(dataline));
}
else
{
blanklineCount = (byte)(blanklineCount + 1);
if (blanklineCount == 255)
{
addToDoc(m_Document, "A");
addToDoc(m_Document, blanklineCount);
blanklineCount = 0;
}
}
}
if (blanklineCount > 0)
{
addToDoc(m_Document, "A");
addToDoc(m_Document, blanklineCount);
blanklineCount = 0;
}
addToDoc(m_Document, ESC + "E");
}
private byte[] compressGraphicLine(byte[] dataline)
{
byte count = 0;
byte currentByte = 0;
ByteArrayOutputStream rleString = new ByteArrayOutputStream(128);
addToDoc(rleString, "G");
for (int index = 0; index < dataline.length; index++) {
if (count == 0)
{
currentByte = dataline[index];
addToDoc(rleString, currentByte);
count = (byte)(count + 1);
}
else if ((count < 255) && (currentByte == dataline[index]))
{
count = (byte)(count + 1);
}
else
{
addToDoc(rleString, count);
count = 0;
currentByte = dataline[index];
addToDoc(rleString, currentByte);
count = (byte)(count + 1);
}
}
if (count > 0) {
addToDoc(rleString, count);
}
if (rleString.size() > dataline.length + 1)
{
rleString.reset();
addToDoc(rleString, "U");
for (int item = 0; item < dataline.length; item++) {
addToDoc(rleString, dataline[item]);
}
}
return rleString.toByteArray();
}
BufferedImage newImage = new BufferedImage(1024, 512, BufferedImage.TYPE_4BYTE_ABGR);
// some lines and rectangles are drawn in the image
...
// the image is printed, following the SDK javadoc for DocumentLP.writeImage
// "This will cause the image specified to be printed. Images will be expanded to occupy
// the entire width of the printer, so the correct current width of the printer must be
// specified. Images that are too wide will be cropped, and images that are too narrow
// will be padded on the right."
testDoc.writeImage(newImage, m_PrinterWidth);
// taken from SDK javadoc
DocumentLP docLP;
docLP = new DocumentLP("$");
// own code
BufferedInputStream bis = new BufferedInputStream(--from your image--);
BufferedImage bufImage = ImageIO.read(bis);
// have a look into Sample.java for the expected value of m_PrinterWidth
testDoc.writeImage(bufImage, m_PrinterWidth);
File file = new File(selectedPath);
byte[] readBuffer = new byte[(int)file.length()];
InputStream inputStream= new BufferedInputStream(new FileInputStream(file));
inputStream.read(readBuffer);
inputStream.close();
fileData = readBuffer;
Bitmap m_imageObject = BitmapFactory.decodeByteArray(fileData, 0, fileData.length);
documentLP.clear();
ocumentLP.writeImage(m_imageObject, m_printHeadWidth);