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Fixed SDL 1.2 compatibility problem. The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec with the correct samples and size set by the driver. This value is important since it may be used by applications that size audio buffers, etc. However, we want to allow advanced applications to call SDL_OpenAudioDevice() which gets passed a const 'desired' parameter, and have the correct data filled into the 'obtained' parameter, possibly allowing or not allowing format changes. So... 'obtained' becomes the audio format the user callback is expected to use, and we add flags to allow the application to specify which format changes are allowed. Note: We really need to add a way to query the 'obtained' audio spec.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 13 Dec 2008 06:36:47 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_Rect</TITLE
><META
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><H1
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>SDL_Rect</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3046"
></A
><H2
>Name</H2
>SDL_Rect&nbsp;--&nbsp;Defines a rectangular area</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3049"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Sint16 x, y;
  Uint16 w, h;
} SDL_Rect;</PRE
></DIV
><DIV
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><A
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><H2
>Structure Data</H2
><DIV
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><TABLE
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><TBODY
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><TD
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><TT
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><I
>x, y</I
></TT
></TD
><TD
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VALIGN="TOP"
>Position of the upper-left corner of the rectangle</TD
></TR
><TR
><TD
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VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>w, h</I
></TT
></TD
><TD
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>The width and height of the rectangle</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
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></A
><H2
>Description</H2
><P
>A <SPAN
CLASS="STRUCTNAME"
>SDL_Rect</SPAN
> defines a rectangular area of pixels. It is used by <A
HREF="sdlblitsurface.html"
><TT
CLASS="FUNCTION"
>SDL_BlitSurface</TT
></A
> to define blitting regions and by several other video functions.</P
></DIV
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><H2
>See Also</H2
><P
><A
HREF="sdlblitsurface.html"
><TT
CLASS="FUNCTION"
>SDL_BlitSurface</TT
></A
>,
<A
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><TT
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>SDL_UpdateRect</TT
></A
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