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Adam Strzelecki to SDL
Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit.
Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes).
(1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs
(2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space
(3) Copy other planes for planar YUVs in UpdateTexture
(4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code
Waiting for comments,
--
Adam Strzelecki | nanoant.com
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 04 Oct 2009 04:03:37 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_JoystickEventState</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Event Functions." HREF="eventfunctions.html"><LINK REL="PREVIOUS" TITLE="SDL_GetAppState" HREF="sdlgetappstate.html"><LINK REL="NEXT" TITLE="Joystick" HREF="joystick.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlgetappstate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="joystick.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLJOYSTICKEVENTSTATE" ></A >SDL_JoystickEventState</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN5969" ></A ><H2 >Name</H2 >SDL_JoystickEventState -- Enable/disable joystick event polling</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN5972" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN5973" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >int <B CLASS="FSFUNC" >SDL_JoystickEventState</B ></CODE >(int state);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5979" ></A ><H2 >Description</H2 ><P >This function is used to enable or disable joystick event processing. With joystick event processing disabled you will have to update joystick states with <A HREF="sdljoystickupdate.html" ><TT CLASS="FUNCTION" >SDL_JoystickUpdate</TT ></A > and read the joystick information manually. <TT CLASS="PARAMETER" ><I >state</I ></TT > is either <TT CLASS="LITERAL" >SDL_QUERY</TT >, <TT CLASS="LITERAL" >SDL_ENABLE</TT > or <TT CLASS="LITERAL" >SDL_IGNORE</TT >.</P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >Note: </B >Joystick event handling is prefered</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5990" ></A ><H2 >Return Value</H2 ><P >If <TT CLASS="PARAMETER" ><I >state</I ></TT > is <TT CLASS="LITERAL" >SDL_QUERY</TT > then the current state is returned, otherwise the new processing <TT CLASS="PARAMETER" ><I >state</I ></TT > is returned.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN5996" ></A ><H2 >See Also</H2 ><P ><A HREF="joystick.html" >SDL Joystick Functions</A >, <A HREF="sdljoystickupdate.html" ><TT CLASS="FUNCTION" >SDL_JoystickUpdate</TT ></A >, <A HREF="sdljoyaxisevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_JoyAxisEvent</SPAN ></A >, <A HREF="sdljoyballevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_JoyBallEvent</SPAN ></A >, <A HREF="sdljoybuttonevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_JoyButtonEvent</SPAN ></A >, <A HREF="sdljoyhatevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_JoyHatEvent</SPAN ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlgetappstate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="joystick.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_GetAppState</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="eventfunctions.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Joystick</TD ></TR ></TABLE ></DIV ></BODY ></HTML >