annotate README.PicoGUI @ 1585:980d2a0dc2a3

Date: Tue, 4 Mar 2003 15:05:31 -0800 From: "Jim" Subject: [SDL] Frame Buffer patches... Okay I'm new at patch generation - so please tell me if there's a better way I could have done this. Attached are two patch files generated with 'cvs diff -u' SDL-fb-open-lock.patch applies to SDL_fbvideo.c Modifies the open loop to check /dev/fb/0 found on devfs... Modifies the lock code to return failure if the current virtual terminal is not the one opened for frame buffer writing... Lock would hang forever if switched away (ctrl-alt-F1) ... SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c Switches default mouse mode based on SDL_MOUSEDRV - currently only accepts PS2 - otherwise default is MS Mouse. When the screen is switched - exisiting code (wrapped in ifdef SAVE_SCREEN_COTENTS) would save the wrong bit of the screen.... ( I run frame buffer 1600x1200, the size I requested was 800x600 - the save would save the top 800 lines (non biased) and restore them... Adding screen->offset fixed that ) However, if that option is not set, then a call to SDL_UpdateRect (full screen) is made. (which may have had it's contents changed since the screen is not entirely locked because of lock-failure patch) Jim [patches slightly tweaked for SDL 1.2.10]
author Sam Lantinga <slouken@libsdl.org>
date Wed, 22 Mar 2006 07:48:22 +0000
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1 ========================
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2 Using SDL with PicoGUI
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3 ========================
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5 - Originally contributed by Micah Dowty <micahjd@users.sourceforge.net>
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7 PicoGUI is a scalable GUI system with a unique architecture, primarily focused
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8 on scalability to various embedded systems. You can find more information
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9 including a FAQ at http://picogui.org
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11 To use the patch:
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13 1. When compiling, add the "--enable-video-picogui" switch to ./configure
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15 2. When running your program, ensure that the picogui driver for SDL
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16 is in use by setting the SDL_VIDEODRIVER environment variable
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17 to "picogui".
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19 3. The program must also be linked to the C client library for PicoGUI
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20 (libpgui.so). If the program is being compiled with a patched SDL
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21 installed this should be done automatically. If you want to use an
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22 existing binary with PicoGUI, you can set the LD_PRELOAD environment
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23 variable to the path of your libpgui.so file.
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25 Capabilities:
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27 So far only basic functionality is provided on true color (linear16/24/32)
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28 devices. Accessing a memory mapped bitmap, updating the display, and handling
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29 mouse/keyboard input. This functionality has been tested with several
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30 applications, including mplayer, Xine, sldroids, and Abuse.
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31
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32 TODO list:
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33
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34 - YUV overlays will be helpful for watching video on set top boxes or other
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35 embedded devices that have some graphics acceleration hardware
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37 - Account for rotated bitmap storage in pgserver
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39 - Support for hiding or changing the cursor
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41 - The display should be centered when the SDL application is smaller
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42 than the PicoGUI panel
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44 - Fullscreen or any other special modes
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46 - Support for indexed and grayscale modes
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48 - Probably much more...
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50 --- The End ---