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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 dea73e1d07b0
line wrap: on
line source

/*
 * Copyright 1993-2001 by Xi Graphics, Inc.
 * All Rights Reserved.
 *
 * Please see the LICENSE file accompanying this distribution for licensing 
 * information. 
 *
 * Please send any bug fixes and modifications to src@xig.com.
 *
 * $XiGId: xme.c,v 1.2 2001/11/30 21:56:59 jon Exp $
 *
 */

#define NEED_EVENTS
#define NEED_REPLIES

#include <X11/Xlibint.h>
#include <X11/Xthreads.h>
#include <X11/Xmd.h>
#include <X11/Xproto.h>
#include "../extensions/Xext.h"
#include "../extensions/extutil.h"

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


#define	XIGMISC_PROTOCOL_NAME 		     "XiG-SUNDRY-NONSTANDARD"
#define XIGMISC_MAJOR_VERSION	             2
#define XIGMISC_MINOR_VERSION 	             0

#define XiGMiscNumberEvents	             0

#define	X_XiGMiscQueryVersion		     0
#define	X_XiGMiscQueryViews		     1
#define X_XiGMiscQueryResolutions            2
#define X_XiGMiscChangeResolution            3
#define X_XiGMiscFullScreen                  4

#define sz_xXiGMiscQueryVersionReq	     8
#define sz_xXiGMiscQueryViewsReq	     8
#define sz_xXiGMiscQueryResolutionsReq       8
#define sz_xXiGMiscChangeResolutionReq       16
#define sz_xXiGMiscFullScreenReq             16

#define sz_xXiGMiscQueryVersionReply	     32
#define sz_xXiGMiscQueryViewsReply	     32
#define sz_xXiGMiscQueryResolutionsReply     32
#define sz_xXiGMiscQueryFullScreenReply      32

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

typedef struct
{
    CARD8 reqType;              /* always codes->major_opcode        */
    CARD8 xigmiscReqType;       /* always X_XiGMiscQueryVersion      */
    CARD16 length;
    CARD16 major;
    CARD16 minor;
} xXiGMiscQueryVersionReq;

typedef struct
{
    CARD8 reqType;              /* always codes->major_opcode        */
    CARD8 xigmiscReqType;       /* always X_XiGMiscQueryViews        */
    CARD16 length;
    CARD8 screen;
    CARD8 pad0;
    CARD16 pad1;
} xXiGMiscQueryViewsReq;

typedef struct
{
    CARD8 reqType;              /* always codes->major_opcode        */
    CARD8 xigmiscReqType;       /* always X_XiGMiscQueryResolutions  */
    CARD16 length;
    CARD8 screen;
    CARD8 view;
    CARD16 pad0;
} xXiGMiscQueryResolutionsReq;

typedef struct
{
    CARD8 reqType;              /* always codes->major_opcode        */
    CARD8 xigmiscReqType;       /* always X_XiGMiscChangeResolution  */
    CARD16 length;
    CARD8 screen;
    CARD8 view;
    CARD16 pad0;
    CARD16 width;
    CARD16 height;
    INT32 refresh;
} xXiGMiscChangeResolutionReq;

typedef struct
{
    CARD8 reqType;              /* always codes->major_opcode        */
    CARD8 xigmiscReqType;       /* always X_XiGMiscFullScreen        */
    CARD16 length;
    CARD8 screen;
    CARD8 pad0;
    CARD16 pad1;
    CARD32 window;
    CARD32 cmap;
} xXiGMiscFullScreenReq;

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

typedef struct
{
    BYTE type;                  /* X_Reply                           */
    CARD8 pad0;
    CARD16 sequenceNumber;
    CARD32 length;
    CARD16 major;
    CARD16 minor;
    CARD32 pad1;
    CARD32 pad2;
    CARD32 pad3;
    CARD32 pad4;
    CARD32 pad5;
} xXiGMiscQueryVersionReply;

typedef struct
{
    BYTE type;                  /* X_Reply                           */
    CARD8 pad0;
    CARD16 sequenceNumber;
    CARD32 length;
    CARD32 nviews;
    CARD32 pad1;
    CARD32 pad2;
    CARD32 pad3;
    CARD32 pad4;
    CARD32 pad5;
} xXiGMiscQueryViewsReply;

typedef struct
{
    BYTE type;                  /* X_Reply                           */
    CARD8 pad0;
    CARD16 sequenceNumber;
    CARD32 length;
    CARD16 active;
    CARD16 nresolutions;
    CARD32 pad1;
    CARD32 pad2;
    CARD32 pad3;
    CARD32 pad4;
    CARD32 pad5;
} xXiGMiscQueryResolutionsReply;

typedef struct
{
    BYTE type;                  /* X_Reply                           */
    BOOL success;
    CARD16 sequenceNumber;
    CARD32 length;
    CARD32 pad1;
    CARD32 pad2;
    CARD32 pad3;
    CARD32 pad4;
    CARD32 pad5;
    CARD32 pad6;
} xXiGMiscFullScreenReply;

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

typedef struct
{
    INT16 x;
    INT16 y;
    CARD16 w;
    CARD16 h;
} XiGMiscViewInfo;

typedef struct
{
    CARD16 width;
    CARD16 height;
    INT32 refresh;
} XiGMiscResolutionInfo;

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

static XExtensionInfo *xigmisc_info = NULL;
static char *xigmisc_extension_name = XIGMISC_PROTOCOL_NAME;

#define XiGMiscCheckExtension(dpy,i,val) \
  XextCheckExtension (dpy, i, xigmisc_extension_name, val)
#define XiGMiscSimpleCheckExtension(dpy,i) \
  XextSimpleCheckExtension (dpy, i, xigmisc_extension_name)

#if defined(__STDC__) && !defined(UNIXCPP)
#define XiGMiscGetReq(name,req,info) GetReq (name, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_##name;

#define XiGMiscGetReqExtra(name,n,req,info) GetReqExtra (name, n, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmicReqType = X_##name;
#else
#define XiGMiscGetReq(name,req,info) GetReq (name, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_/**/name;
#define XiGMiscGetReqExtra(name,n,req,info) GetReqExtra (name, n, req); \
        req->reqType = info->codes->major_opcode; \
        req->xigmiscReqType = X_/**/name;
#endif



/*
 * find_display - locate the display info block
 */
static int XiGMiscCloseDisplay();

static XExtensionHooks xigmisc_extension_hooks = {
    NULL,                       /* create_gc */
    NULL,                       /* copy_gc */
    NULL,                       /* flush_gc */
    NULL,                       /* free_gc */
    NULL,                       /* create_font */
    NULL,                       /* free_font */
    XiGMiscCloseDisplay,        /* close_display */
    NULL,                       /* wire_to_event */
    NULL,                       /* event_to_wire */
    NULL,                       /* error */
    NULL,                       /* error_string */
};


static
XEXT_GENERATE_CLOSE_DISPLAY(XiGMiscCloseDisplay, xigmisc_info)
     static XEXT_GENERATE_FIND_DISPLAY(XiGMiscFindDisplay, xigmisc_info,
                                       xigmisc_extension_name,
                                       &xigmisc_extension_hooks,
                                       XiGMiscNumberEvents, NULL)
/*****************************************************************************/
     Bool XiGMiscQueryVersion(Display * dpy, int *major, int *minor)
{
    int opcode, event, error;
    xXiGMiscQueryVersionReq *req;
    xXiGMiscQueryVersionReply rep;
    XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

    if (!XQueryExtension(dpy, XIGMISC_PROTOCOL_NAME, &opcode, &event, &error))
        return xFalse;

    XiGMiscCheckExtension(dpy, info, xFalse);

    LockDisplay(dpy);
    XiGMiscGetReq(XiGMiscQueryVersion, req, info);

    req->major = XIGMISC_MAJOR_VERSION;
    req->minor = XIGMISC_MINOR_VERSION;

    if (!_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return xFalse;
    }

    *major = rep.major;
    *minor = rep.minor;
    UnlockDisplay(dpy);
    SyncHandle();

    return xTrue;
}

int
XiGMiscQueryViews(Display * dpy, int screen, XiGMiscViewInfo ** pviews)
{
    int n, size;
    XiGMiscViewInfo *views;
    xXiGMiscQueryViewsReq *req;
    xXiGMiscQueryViewsReply rep;
    XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);
    XiGMiscCheckExtension(dpy, info, 0);

    LockDisplay(dpy);
    XiGMiscGetReq(XiGMiscQueryViews, req, info);
    req->screen = screen;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return 0;
    }

    n = rep.nviews;

    if (n > 0) {
        size = sizeof(XiGMiscViewInfo) * n;
        views = (XiGMiscViewInfo *) Xmalloc(size);
        if (!views) {
            _XEatData(dpy, (unsigned long) size);
            UnlockDisplay(dpy);
            SyncHandle();
            return 0;
        }

        _XReadPad(dpy, (void *) views, size);

        *pviews = views;
    }

    UnlockDisplay(dpy);
    SyncHandle();

    return n;
}

int
XiGMiscQueryResolutions(Display * dpy, int screen, int view, int *pactive,
                        XiGMiscResolutionInfo ** presolutions)
{
    int n, size;
    XiGMiscResolutionInfo *resolutions;
    xXiGMiscQueryResolutionsReq *req;
    xXiGMiscQueryResolutionsReply rep;
    XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);
    XiGMiscCheckExtension(dpy, info, 0);

    LockDisplay(dpy);
    XiGMiscGetReq(XiGMiscQueryResolutions, req, info);
    req->screen = screen;
    req->view = view;

    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return 0;
    }

    n = rep.nresolutions;

    if (n > 0) {
        size = sizeof(XiGMiscResolutionInfo) * n;
        resolutions = (XiGMiscResolutionInfo *) Xmalloc(size);
        if (!resolutions) {
            _XEatData(dpy, (unsigned long) size);
            UnlockDisplay(dpy);
            SyncHandle();
            return 0;
        }

        _XReadPad(dpy, (void *) resolutions, size);

        *presolutions = resolutions;
        *pactive = rep.active;
    }

    UnlockDisplay(dpy);
    SyncHandle();

    return n;
}

void
XiGMiscChangeResolution(Display * dpy, int screen, int view, int width,
                        int height, int refresh)
{
    xXiGMiscChangeResolutionReq *req;
    XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

    XiGMiscSimpleCheckExtension(dpy, info);

    LockDisplay(dpy);
    XiGMiscGetReq(XiGMiscChangeResolution, req, info);
    req->screen = screen;
    req->view = view;
    req->width = width;
    req->height = height;
    req->refresh = refresh;

    UnlockDisplay(dpy);
    SyncHandle();
}


Bool
XiGMiscFullScreen(Display * dpy, int screen, XID window, XID cmap)
{
    xXiGMiscFullScreenReq *req;
    xXiGMiscFullScreenReply rep;
    XExtDisplayInfo *info = XiGMiscFindDisplay(dpy);

    XiGMiscCheckExtension(dpy, info, xFalse);

    LockDisplay(dpy);
    XiGMiscGetReq(XiGMiscFullScreen, req, info);
    req->screen = screen;
    req->pad0 = 0;
    req->pad1 = 0;
    req->window = window;
    req->cmap = cmap;

    if (!_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
        UnlockDisplay(dpy);
        SyncHandle();
        return xFalse;
    }

    UnlockDisplay(dpy);
    SyncHandle();

    return (rep.success ? xTrue : xFalse);
}

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