add support for [1974164] Be able to take a screen shot on the device
screenshots are taken using ISurfaceComposer::captureScreen() which returns
the size of the screenshot and an IMemoryHeap containing the data.
screenshots have limitations:
- they will always fail if a secure window is up on screen
- require GL_OES_framebuffer_object extension
- in some situation, video planes won't been captured
Change-Id: I741c68a2d2984fb139039301c3349e6780e2cd58
diff --git a/include/surfaceflinger/ISurfaceComposer.h b/include/surfaceflinger/ISurfaceComposer.h
index dd44aa5..76307b2 100644
--- a/include/surfaceflinger/ISurfaceComposer.h
+++ b/include/surfaceflinger/ISurfaceComposer.h
@@ -110,6 +110,13 @@
*/
virtual void bootFinished() = 0;
+ /* Capture the specified screen. requires READ_FRAME_BUFFER permission
+ * This function will fail if there is a secure window on screen.
+ */
+ virtual status_t captureScreen(DisplayID dpy,
+ sp<IMemoryHeap>* heap,
+ uint32_t* width, uint32_t* height, PixelFormat* format) = 0;
+
/* Signal surfaceflinger that there might be some work to do
* This is an ASYNCHRONOUS call.
*/
@@ -133,7 +140,8 @@
SET_ORIENTATION,
FREEZE_DISPLAY,
UNFREEZE_DISPLAY,
- SIGNAL
+ SIGNAL,
+ CAPTURE_SCREEN
};
virtual status_t onTransact( uint32_t code,