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Adjusted default choice of audio driver. If a driver can definitely see available devices, it is chosen. Otherwise, we'll take the first driver that initializes but saw no devices...this might be because it can't enumerate them, or there really aren't any available. This prevents the dsp driver from hogging control when there are no /dev/dsp* nodes (for example, on a Linux box with ALSA and no OSS emulation).
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 01 Jan 2009 07:54:58 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_VideoInfo</TITLE
><META
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><H1
><A
NAME="SDLVIDEOINFO"
></A
>SDL_VideoInfo</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3390"
></A
><H2
>Name</H2
>SDL_VideoInfo&nbsp;--&nbsp;Video Target information</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3393"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint32 hw_available:1;
  Uint32 wm_available:1;
  Uint32 blit_hw:1;
  Uint32 blit_hw_CC:1;
  Uint32 blit_hw_A:1;
  Uint32 blit_sw:1;
  Uint32 blit_sw_CC:1;
  Uint32 blit_sw_A:1;
  Uint32 blit_fill;
  Uint32 video_mem;
  SDL_PixelFormat *vfmt;
} SDL_VideoInfo;</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3396"
></A
><H2
>Structure Data</H2
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN3398"
></A
><P
></P
><TABLE
BORDER="0"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>hw_available</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Is it possible to create hardware surfaces?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>wm_available</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Is there a window manager available</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_hw</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are hardware to hardware blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_hw_CC</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are hardware to hardware colorkey blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_hw_A</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are hardware to hardware alpha blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_sw</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are software to hardware blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_sw_CC</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are software to hardware colorkey blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_sw_A</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are software to hardware alpha blits accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>blit_fill</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Are color fills accelerated?</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>video_mem</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Total amount of video memory in Kilobytes</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>vfmt</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><A
HREF="sdlpixelformat.html"
>Pixel format</A
> of the video device</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3446"
></A
><H2
>Description</H2
><P
>This (read-only) structure is returned by <A
HREF="sdlgetvideoinfo.html"
><TT
CLASS="FUNCTION"
>SDL_GetVideoInfo</TT
></A
>. It contains information on either the 'best' available mode  (if called before <A
HREF="sdlsetvideomode.html"
><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
>) or the current video mode.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3453"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlpixelformat.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_PixelFormat</SPAN
></A
>,
<A
HREF="sdlgetvideoinfo.html"
><TT
CLASS="FUNCTION"
>SDL_GetVideoInfo</TT
></A
></P
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