/**
* Capture a part of the desktop screen using native grabber.
*
* <p>Contrary to other captureScreen method, it only returns raw bytes and not
* <tt>BufferedImage</tt>. It is done in order to limit slow operation such as converting ARGB
* images (uint32_t) to bytes especially for big big screen. For example a 1920x1200 desktop
* consumes 9 MB of memory for grabbing and another 9 MB array for conversion operation.
*
* @param display index of display
* @param x x position to start capture
* @param y y position to start capture
* @param width capture width
* @param height capture height
* @param buffer native output buffer to store bytes in. Be sure that output length is sufficient
* @param bufferLength length of native buffer
* @return true if success, false if JNI error or output length too short
*/
public boolean captureScreen(
int display, int x, int y, int width, int height, long buffer, int bufferLength) {
return (OSUtils.IS_LINUX || OSUtils.IS_MAC || OSUtils.IS_WINDOWS)
&& ScreenCapture.grabScreen(display, x, y, width, height, buffer, bufferLength);
}
/**
* Capture a part of the desktop screen using native grabber.
*
* <p>Contrary to other captureScreen method, it only returns raw bytes and not
* <tt>BufferedImage</tt>. It is done in order to limit slow operation such as converting ARGB
* images (uint32_t) to bytes especially for big big screen. For example a 1920x1200 desktop
* consumes 9 MB of memory for grabbing and another 9 MB array for conversion operation.
*
* @param display index of display
* @param x x position to start capture
* @param y y position to start capture
* @param width capture width
* @param height capture height
* @param output output buffer to store bytes in. Be sure that output length is sufficient
* @return true if success, false if JNI error or output length too short
*/
public boolean captureScreen(int display, int x, int y, int width, int height, byte[] output) {
return (OSUtils.IS_LINUX || OSUtils.IS_MAC || OSUtils.IS_WINDOWS)
&& ScreenCapture.grabScreen(display, x, y, width, height, output);
}