First real library version of the grayscale framework

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4641 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 80 insertions, 0 deletions

diff --git a/apps/plugins/lib/gray.h b/apps/plugins/lib/gray.h
new file mode 100644
index 0000000..64bc4dd
--- /dev/null
+++ b/apps/plugins/lib/gray.h
@@ -0,0 +1,80 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Grayscale framework
+*
+* Copyright (C) 2004 Jens Arnold
+*
+* All files in this archive are subject to the GNU General Public License.
+* See the file COPYING in the source tree root for full license agreement.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#ifndef __GRAY_H__
+#define __GRAY_H__
+
+#ifndef SIMULATOR /* not for simulator by now */
+#include "plugin.h"
+
+#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
+
+/* This is a generic framework to use grayscale display within rockbox
+ * plugins. It obviously does not work for the player.
+ */
+
+/* every framework needs such a function, and it has to be called as
+ * the very first one */
+void gray_init(struct plugin_api* newrb);
+
+/* general functions */
+int gray_init_buffer(unsigned char *gbuf, int gbuf_size, int width,
+                     int bheight, int depth);
+void gray_release_buffer(void);
+void gray_position_display(int x, int by);
+void gray_show_display(bool enable);
+
+/* functions affecting the whole display */
+void gray_clear_display(void);
+void gray_black_display(void);
+void gray_deferred_update(void);
+
+/* scrolling functions */
+void gray_scroll_left(int count, bool black_border);
+void gray_scroll_right(int count, bool black_border);
+void gray_scroll_up8(bool black_border);
+void gray_scroll_down8(bool black_border);
+void gray_scroll_up(int count, bool black_border);
+void gray_scroll_down(int count, bool black_border);
+
+/* pixel functions */
+void gray_drawpixel(int x, int y, int brightness);
+void gray_invertpixel(int x, int y);
+
+/* line functions */
+void gray_drawline(int x1, int y1, int x2, int y2, int brightness);
+void gray_invertline(int x1, int y1, int x2, int y2);
+
+/* rectangle functions */
+void gray_drawrect(int x1, int y1, int x2, int y2, int brightness);
+void gray_fillrect(int x1, int y1, int x2, int y2, int brightness);
+void gray_invertrect(int x1, int y1, int x2, int y2);
+
+/* bitmap functions */
+void gray_drawgraymap(unsigned char *src, int x, int y, int nx, int ny,
+                      int stride);
+void gray_drawbitmap(unsigned char *src, int x, int y, int nx, int ny,
+                     int stride, bool draw_bg, int fg_brightness,
+                     int bg_brightness);
+
+#endif /* HAVE_LCD_BITMAP */
+#endif /* SIMULATOR */
+#endif /* __GRAY_H__ */