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view docs/man3/SDL_KeyboardEvent.3 @ 2661:d38309be5178 gsoc2008_audio_resampling

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The windowed sinc filter generation code seems to be working fine. The FIR filtering code is also now working reasonably well. Occasionally the FIR filter will pop, but setting the normalization factor lower seems to help this. I suspect the problem is in the fixed point multiply/add. I also have a hunch the zero stuffing/sample discarding code is not correct, and I'll look at that soon to get it sorted out.
author Aaron Wishnick <schnarf@gmail.com>
date Wed, 02 Jul 2008 08:04:50 +0000
parents 546f7c1eb755
children 1238da4a7112
line wrap: on
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.TH "SDL_KeyboardEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_KeyboardEvent \- Keyboard event structure
.SH "STRUCTURE DEFINITION"
.PP
.nf
\f(CWtypedef struct{
  Uint8 type;
  Uint8 state;
  SDL_keysym keysym;
} SDL_KeyboardEvent;\fR
.fi
.PP
.SH "STRUCTURE DATA"
.TP 20
\fBtype\fR
\fBSDL_KEYDOWN\fP or \fBSDL_KEYUP\fP
.TP 20
\fBstate\fR
\fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP
.TP 20
\fBkeysym\fR
Contains key press information
.SH "DESCRIPTION"
.PP
\fBSDL_KeyboardEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_KEYDOWN\fP or \fBSDL_KEYUP\fP is reported\&.
.PP
The \fBtype\fR and \fBstate\fR actually report the same information, they just use different values to do it! A keyboard event occurs when a key is released (\fBtype\fR=\fBSDK_KEYUP\fP or \fBstate\fR=\fBSDL_RELEASED\fP) and when a key is pressed (\fBtype\fR=\fBSDL_KEYDOWN\fP or \fBstate\fR=\fBSDL_PRESSED\fP)\&. The information on what key was pressed or released is in the \fI\fBkeysym\fR\fR structure\&.
.PP
.RS
\fBNote:  
.PP
Repeating \fBSDL_KEYDOWN\fP events will occur if key repeat is enabled (see \fI\fBSDL_EnableKeyRepeat\fP\fR)\&.
.RE
.SH "SEE ALSO"
.PP
\fI\fBSDL_Event\fR\fR, \fI\fBSDL_keysym\fR\fR, \fI\fBSDL_EnableKeyRepeat\fP\fR, \fI\fBSDL_EnableUNICODE\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59