if (isPreview)
camera.stopPreview();
camera.release();
camera = null;
}
System.exit(0);
}
});
// 设置该SurfaceView自己不维护缓冲
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
private void initCamera() {
if (!isPreview) {
camera = Camera.open();
}
if (camera != null && !isPreview) {
try{
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewSize(screenWidth, screenHeight); // 设置预览照片的大小
parameters.setPreviewFpsRange(20,30); // 每秒显示20~30帧
parameters.setPictureFormat(ImageFormat.NV21); // 设置图片格式
parameters.setPictureSize(screenWidth, screenHeight); // 设置照片的大小
//camera.setParameters(parameters); // android2.3.3以后不需要此行代码
camera.setPreviewDisplay(surfaceHolder); // 过SurfaceView显示取景画面
camera.setPreviewCallback(new StreamIt(ipname)); // 设置回调的类
camera.startPreview(); // 开始预览
camera.autoFocus(null); // 自动对焦
} catch (Exception e) {
e.printStackTrace();
}
isPreview = true;
}
}
}
class StreamIt implements Camera.PreviewCallback {
private String ipname;
public StreamIt(String ipname){
this.ipname = ipname;
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
Size size = camera.getParameters().getPreviewSize();
try{
//调用image.compressToJpeg（）将YUV格式图像数据data转为jpg格式
YuvImage image = new YuvImage(data, ImageFormat.NV21, size.width, size.height, null);
if(image!=null){
ByteArrayOutputStream outstream = new ByteArrayOutputStream();
image.compressToJpeg(new Rect(0, 0, size.width, size.height), 80, outstream);
outstream.flush();
//启用线程将图像数据发送出去
Thread th = new MyThread(outstream,ipname);
th.start();
}
}catch(Exception ex){
Log.e("Sys","Error:"+ex.getMessage());
}
}
}
class MyThread extends Thread{