1 files changed, 102 insertions, 0 deletions
diff --git a/android/display.c b/android/display.c
new file mode 100644
index 0000000..0cfd98d
--- /dev/null
+++ b/android/display.c
@@ -0,0 +1,102 @@
+/* Copyright (C) 2010 The Android Open Source Project
+**
+** This software is licensed under the terms of the GNU General Public
+** License version 2, as published by the Free Software Foundation, and
+** may be copied, distributed, and modified under those terms.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+*/
+
+/* Initialization of the Android-specific DisplayState.
+ * Read docs/DISPLAY-STATE.TXT to understand what this
+ * is supposed to do.
+ */
+#include "android/display.h"
+
+/*
+
+TECHNICAL NOTE:
+
+DisplayState <--> QFrameBuffer <--> QEmulator/SDL
+
+*/
+
+/* QFrameBuffer producer callbacks */
+
+/* this is called periodically by the GUI timer to check for updates
+ * and poll user events. Use vga_hw_update().
+ */
+static void
+android_display_producer_check(void *opaque)
+{
+    /* core: call vga_hw_update(). this will eventually
+     * lead to calls to android_display_update()
+     */
+    (void)opaque;
+    vga_hw_update();
+}
+
+static void
+android_display_producer_invalidate(void *opaque)
+{
+    (void)opaque;
+    vga_hw_invalidate();
+}
+
+/* QFrameBuffer client callbacks */
+
+/* this is called from dpy_update() each time a hardware framebuffer
+ * rectangular update was detected. Send this to the QFrameBuffer.
+ */
+static void
+android_display_update(DisplayState *ds, int x, int y, int w, int h)
+{
+    QFrameBuffer* qfbuff = ds->opaque;
+    qframebuffer_update(qfbuff, x, y, w, h);
+}
+
+static void
+android_display_resize(DisplayState *ds)
+{
+    QFrameBuffer* qfbuff = ds->opaque;
+    qframebuffer_rotate(qfbuff, 0);
+}
+
+static void
+android_display_refresh(DisplayState *ds)
+{
+    QFrameBuffer* qfbuff = ds->opaque;
+    qframebuffer_poll(qfbuff);
+}
+
+
+void android_display_init(DisplayState* ds, QFrameBuffer* qf)
+{
+    DisplayChangeListener* dcl;
+
+    qframebuffer_set_producer(qf, ds,
+                              android_display_producer_check,
+                              android_display_producer_invalidate,
+                              NULL); // detach
+
+    /* Replace the display surface with one with the right dimensions */
+    qemu_free_displaysurface(ds);
+    ds->opaque    = qf;
+    ds->surface   = qemu_create_displaysurface_from(qf->width,
+                                                    qf->height,
+                                                    16,
+                                                    qf->pitch,
+                                                    qf->pixels);
+
+    /* Register a change listener for it */
+    dcl = (DisplayChangeListener *) qemu_mallocz(sizeof(DisplayChangeListener));
+    dcl->dpy_update      = android_display_update;
+    dcl->dpy_resize      = android_display_resize;
+    dcl->dpy_refresh     = android_display_refresh;
+    dcl->dpy_text_cursor = NULL;
+
+    register_displaychangelistener(ds, dcl);
+}