/**
* Like {@link SurfaceControl#screenshot(int, int, int, int, boolean)} but includes all Surfaces
* in the screenshot.
*
* @param width The desired width of the returned bitmap; the raw screen will be scaled down to
* this size.
* @param height The desired height of the returned bitmap; the raw screen will be scaled down to
* this size.
* @return Returns a Bitmap containing the screen contents, or null if an error occurs. Make sure
* to call Bitmap.recycle() as soon as possible, once its content is not needed anymore.
*/
public static Bitmap screenshot(int width, int height) {
// TODO: should take the display as a parameter
IBinder displayToken =
SurfaceControl.getBuiltInDisplay(SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN);
return nativeScreenshot(
displayToken, new Rect(), width, height, 0, 0, true, false, Surface.ROTATION_0);
}
private boolean captureScreenshotTextureAndSetViewport() {
if (!attachEglContext()) {
return false;
}
try {
if (!mTexNamesGenerated) {
GLES10.glGenTextures(1, mTexNames, 0);
if (checkGlErrors("glGenTextures")) {
return false;
}
mTexNamesGenerated = true;
}
final SurfaceTexture st = new SurfaceTexture(mTexNames[0]);
final Surface s = new Surface(st);
try {
SurfaceControl.screenshot(
SurfaceControl.getBuiltInDisplay(SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN), s);
} finally {
s.release();
}
st.updateTexImage();
st.getTransformMatrix(mTexMatrix);
// Set up texture coordinates for a quad.
// We might need to change this if the texture ends up being
// a different size from the display for some reason.
mTexCoordBuffer.put(0, 0f);
mTexCoordBuffer.put(1, 0f);
mTexCoordBuffer.put(2, 0f);
mTexCoordBuffer.put(3, 1f);
mTexCoordBuffer.put(4, 1f);
mTexCoordBuffer.put(5, 1f);
mTexCoordBuffer.put(6, 1f);
mTexCoordBuffer.put(7, 0f);
// Set up our viewport.
GLES10.glViewport(0, 0, mDisplayWidth, mDisplayHeight);
GLES10.glMatrixMode(GLES10.GL_PROJECTION);
GLES10.glLoadIdentity();
GLES10.glOrthof(0, mDisplayWidth, 0, mDisplayHeight, 0, 1);
GLES10.glMatrixMode(GLES10.GL_MODELVIEW);
GLES10.glLoadIdentity();
GLES10.glMatrixMode(GLES10.GL_TEXTURE);
GLES10.glLoadIdentity();
GLES10.glLoadMatrixf(mTexMatrix, 0);
} finally {
detachEglContext();
}
return true;
}
/**
* Copy the current screen contents into a bitmap and return it.
*
* <p>CAVEAT: Versions of screenshot that return a {@link Bitmap} can be extremely slow; avoid use
* unless absolutely necessary; prefer the versions that use a {@link Surface} instead, such as
* {@link SurfaceControl#screenshot(IBinder, Surface)}.
*
* @param sourceCrop The portion of the screen to capture into the Bitmap; caller may pass in 'new
* Rect()' if no cropping is desired.
* @param width The desired width of the returned bitmap; the raw screen will be scaled down to
* this size.
* @param height The desired height of the returned bitmap; the raw screen will be scaled down to
* this size.
* @param minLayer The lowest (bottom-most Z order) surface layer to include in the screenshot.
* @param maxLayer The highest (top-most Z order) surface layer to include in the screenshot.
* @param useIdentityTransform Replace whatever transformation (rotation, scaling, translation)
* the surface layers are currently using with the identity transformation while taking the
* screenshot.
* @param rotation Apply a custom clockwise rotation to the screenshot, i.e.
* Surface.ROTATION_0,90,180,270. Surfaceflinger will always take screenshots in its native
* portrait orientation by default, so this is useful for returning screenshots that are
* independent of device orientation.
* @return Returns a Bitmap containing the screen contents, or null if an error occurs. Make sure
* to call Bitmap.recycle() as soon as possible, once its content is not needed anymore.
*/
public static Bitmap screenshot(
Rect sourceCrop,
int width,
int height,
int minLayer,
int maxLayer,
boolean useIdentityTransform,
int rotation) {
// TODO: should take the display as a parameter
IBinder displayToken =
SurfaceControl.getBuiltInDisplay(SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN);
return nativeScreenshot(
displayToken,
sourceCrop,
width,
height,
minLayer,
maxLayer,
false,
useIdentityTransform,
rotation);
}
