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view src/video/Xext/extensions/xf86dga1.h @ 1982:3b4ce57c6215

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First shot at new audio data types (int32 and float32). Notable changes: - Converters between types are autogenerated. Instead of making multiple passes over the data with seperate filters for endianess, size, signedness, etc, converting between data types is always one specialized filter. This simplifies SDL_BuildAudioCVT(), which otherwise had a million edge cases with the new types, and makes the actually conversions more CPU cache friendly. Left a stub for adding specific optimized versions of these routines (SSE/MMX/Altivec, assembler, etc) - Autogenerated converters are built by SDL/src/audio/sdlgenaudiocvt.pl. This does not need to be run unless tweaking the code, and thus doesn't need integration into the build system. - Went through all the drivers and tried to weed out all the "Uint16" references that are better specified with the new SDL_AudioFormat typedef. - Cleaned out a bunch of hardcoded bitwise magic numbers and replaced them with new SDL_AUDIO_* macros. - Added initial float32 and int32 support code. Theoretically, existing drivers will push these through converters to get the data they want to feed to the hardware. Still TODO: - Optimize and debug new converters. - Update the CoreAudio backend to accept float32 data directly. - Other backends, too? - SDL_LoadWAV() needs to be updated to support int32 and float32 .wav files (both of which exist and can be generated by 'sox' for testing purposes). - Update the mixer to handle new datatypes. - Optionally update SDL_sound and SDL_mixer, etc.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 24 Aug 2006 12:10:46 +0000
parents c121d94672cb
children
line wrap: on
line source

/* $XFree86: xc/include/extensions/xf86dga1.h,v 1.2 1999/04/17 07:05:41 dawes Exp $ */
/*

Copyright (c) 1995  Jon Tombs
Copyright (c) 1995  XFree86 Inc

*/

/************************************************************************

   THIS IS THE OLD DGA API AND IS OBSOLETE.  PLEASE DO NOT USE IT ANYMORE

************************************************************************/

#ifndef _XF86DGA1_H_
#define _XF86DGA1_H_

#include <X11/Xfuncproto.h>
#include "SDL_name.h"

#define X_XF86DGAQueryVersion		0
#define X_XF86DGAGetVideoLL		1
#define X_XF86DGADirectVideo		2
#define X_XF86DGAGetViewPortSize	3
#define X_XF86DGASetViewPort		4
#define X_XF86DGAGetVidPage		5
#define X_XF86DGASetVidPage		6
#define X_XF86DGAInstallColormap	7
#define X_XF86DGAQueryDirectVideo	8
#define X_XF86DGAViewPortChanged	9

#define XF86DGADirectPresent		0x0001
#define XF86DGADirectGraphics		0x0002
#define XF86DGADirectMouse		0x0004
#define XF86DGADirectKeyb		0x0008
#define XF86DGAHasColormap		0x0100
#define XF86DGADirectColormap		0x0200




#ifndef _XF86DGA_SERVER_

_XFUNCPROTOBEGIN Bool SDL_NAME(XF86DGAQueryVersion) (
#if NeedFunctionPrototypes
                                                        Display * /* dpy */ ,
                                                        int *
                                                        /* majorVersion */ ,
                                                        int *   /* minorVersion */
#endif
    );

Bool SDL_NAME(XF86DGAQueryExtension) (
#if NeedFunctionPrototypes
                                         Display * /* dpy */ ,
                                         int * /* event_base */ ,
                                         int *  /* error_base */
#endif
    );

Status SDL_NAME(XF86DGAGetVideoLL) (
#if NeedFunctionPrototypes
                                       Display * /* dpy */ ,
                                       int /* screen */ ,
                                       int * /* base addr */ ,
                                       int * /* width */ ,
                                       int * /* bank_size */ ,
                                       int *    /* ram_size */
#endif
    );

Status SDL_NAME(XF86DGAGetVideo) (
#if NeedFunctionPrototypes
                                     Display * /* dpy */ ,
                                     int /* screen */ ,
                                     char ** /* base addr */ ,
                                     int * /* width */ ,
                                     int * /* bank_size */ ,
                                     int *      /* ram_size */
#endif
    );

Status SDL_NAME(XF86DGADirectVideo) (
#if NeedFunctionPrototypes
                                        Display * /* dpy */ ,
                                        int /* screen */ ,
                                        int     /* enable */
#endif
    );

Status SDL_NAME(XF86DGADirectVideoLL) (
#if NeedFunctionPrototypes
                                          Display * /* dpy */ ,
                                          int /* screen */ ,
                                          int   /* enable */
#endif
    );

Status SDL_NAME(XF86DGAGetViewPortSize) (
#if NeedFunctionPrototypes
                                            Display * /* dpy */ ,
                                            int /* screen */ ,
                                            int * /* width */ ,
                                            int *       /* height */
#endif
    );

Status SDL_NAME(XF86DGASetViewPort) (
#if NeedFunctionPrototypes
                                        Display * /* dpy */ ,
                                        int /* screen */ ,
                                        int x /* X */ ,
                                        int y   /* Y */
#endif
    );

Status SDL_NAME(XF86DGAGetVidPage) (
#if NeedFunctionPrototypes
                                       Display * /* dpy */ ,
                                       int /* screen */ ,
                                       int *    /* vid page */
#endif
    );

Status SDL_NAME(XF86DGASetVidPage) (
#if NeedFunctionPrototypes
                                       Display * /* dpy */ ,
                                       int /* screen */ ,
                                       int      /* vid page */
#endif
    );

Status SDL_NAME(XF86DGAInstallColormap) (
#if NeedFunctionPrototypes
                                            Display * /* dpy */ ,
                                            int /* screen */ ,
                                            Colormap    /*Colormap */
#endif
    );

int SDL_NAME(XF86DGAForkApp) (
#if NeedFunctionPrototypes
                                 int screen
#endif
    );

Status SDL_NAME(XF86DGAQueryDirectVideo) (
#if NeedFunctionPrototypes
                                             Display * /* dpy */ ,
                                             int /* screen */ ,
                                             int *      /* flags */
#endif
    );

Bool SDL_NAME(XF86DGAViewPortChanged) (
#if NeedFunctionPrototypes
                                          Display * /* dpy */ ,
                                          int /* screen */ ,
                                          int   /* n */
#endif
    );


_XFUNCPROTOEND
#endif /* _XF86DGA_SERVER_ */
#endif /* _XF86DGA1_H_ */
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