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Usage

Screen resolution : 1280x720 : Any monitor/TV which support this resolution could be connected.

Keymap with generic PC keyboard

• F1 : Home
• F2 : Back
• F3 : Menu
• F11 : Volume Down
• F12 : Volume Up

ADB connection

• Boot the android image with ethernet connected.
• Check IP address of the board at Settings->About->Status
• At host do 'adb connect '

Avoid logcat flood

Apply following patch under frameworks/base, to avoid logcat flood by mouse event.

 core/java/android/view/GestureDetector.java
 @@ line 490 @@ public class GestureDetector {
     public boolean onTouchEvent(MotionEvent ev) {
 +        switch(ev.getAction() & MotionEvent.ACTION_MASK) {
 +        case MotionEvent.ACTION_HOVER_MOVE:
 +        case MotionEvent.ACTION_HOVER_ENTER:
 +        case MotionEvent.ACTION_HOVER_EXIT:
 +        case MotionEvent.ACTION_BUTTON_PRESS:
 +        case MotionEvent.ACTION_BUTTON_RELEASE:
 +        case MotionEvent.ACTION_SCROLL:
 +            return false;
 +        }
          if (mInputEventConsistencyVerifier != null) {

Enable GLSurfaceView

Currently mesa3d vc4 build is supporting only following formats.

• RGB 565, Alpha 0, Depth 24 or 0, Stencil 8 or 0
• RGB 888, Alpha 8, Depth 24 or 0, Stencil 8 or 0

Then apply following patch under frameworks/base, to modify default EGL config.

opengl/java/android/opengl/GLSurfaceView.java
@@ line 976 @@ public class GLSurfaceView extends SurfaceView implements SurfaceHolder.Callback
         public SimpleEGLConfigChooser(boolean withDepthBuffer) {
-            super(8, 8, 8, 0, withDepthBuffer ? 16 : 0, 0);
+            super(8, 8, 8, 8, withDepthBuffer ? 24 : 0, 0);
         }

Avoid screen flashing

On eng build, Strict mode behavior - flash screen when apps do long operations on main thread - is enabled by default. We can avoid it by applying following patch under frameworks/base. This option could be turned on via Settings -> Developer options -> Strict mode enabled.

core/java/android/os/StrictMode.java
@@ line 1068 @@ public final class StrictMode {
     if (IS_ENG_BUILD) {
-            doFlashes = true;
     }

Enable SW video decoder

HW video decoder is not ready yet. SW mode could be used by applying following patch under frameworks/av - with limited size & performance.

media/libstagefright/colorconversion/SoftwareRenderer.cpp
@@ line 113 @@ void SoftwareRenderer::resetFormatIfChanged(const sp<AMessage> &format) {
     case OMX_TI_COLOR_FormatYUV420PackedSemiPlanar:
     {
-            halFormat = HAL_PIXEL_FORMAT_YV12;
-            bufWidth = (mCropWidth + 1) & ~1;
-            bufHeight = (mCropHeight + 1) & ~1;
         break;
     }