android.c

/*
 * Copyright © 2004 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "kdandroid.h"

extern int KdTsPhyScreen;

KdKeyboardInfo *androidKbd;
KdPointerInfo *androidMouse;

Bool
androidInitialize (KdCardInfo *card, AndroidPriv *priv)
{

//    androidInitNative(priv);
//    androidInitFramebuffer(priv, 800, 480, 16);

    priv->base = 0;
    priv->bytes_per_line = 0;
    return TRUE;
}

Bool
androidCardInit (KdCardInfo *card)
{
    AndroidPriv	*priv;

    priv = (AndroidPriv *) malloc(sizeof (AndroidPriv));
    if (!priv)
	return FALSE;
    
    if (!androidInitialize (card, priv))
    {
	free(priv);
	return FALSE;
    }
    card->driver = priv;
    
    return TRUE;
}

Bool
androidScreenInitialize (KdScreenInfo *screen, AndroidScreenPriv *scrpriv)
{
    if (!screen->width || !screen->height)
    {
	screen->width = 800;    //1024;
	screen->height = 480;   //768;
	screen->rate = 72;
    }

    if (screen->width <= 0)
	screen->width = 1;
    if (screen->height <= 0)
	screen->height = 1;
    
    if (!screen->fb.depth)
	screen->fb.depth = 16;

    if (screen->fb.depth <= 8)
    {
	screen->fb.visuals = ((1 << StaticGray) |
			      (1 << GrayScale) |
			      (1 << StaticColor) |
			      (1 << PseudoColor) |
			      (1 << TrueColor) |
			      (1 << DirectColor));
    }
    else 
    {
	screen->fb.visuals = (1 << TrueColor);
#define Mask(o,l)   (((1 << l) - 1) << o)
	if (screen->fb.depth <= 15)
	{
	    screen->fb.depth = 15;
	    screen->fb.bitsPerPixel = 16;
	    screen->fb.redMask = Mask (10, 5);
	    screen->fb.greenMask = Mask (5, 5);
	    screen->fb.blueMask = Mask (0, 5);
	}
	else if (screen->fb.depth <= 16)
	{
	    screen->fb.depth = 16;
	    screen->fb.bitsPerPixel = 16;
	    screen->fb.redMask = Mask (11, 5);
	    screen->fb.greenMask = Mask (5, 6);
	    screen->fb.blueMask = Mask (0, 5);
	}
	else
	{
	    screen->fb.depth = 24;
	    screen->fb.bitsPerPixel = 32;
	    screen->fb.redMask = Mask (16, 8);
	    screen->fb.greenMask = Mask (8, 8);
	    screen->fb.blueMask = Mask (0, 8);
	}
    }

    scrpriv->randr = screen->randr;

    return androidMapFramebuffer (screen);
}

Bool
androidScreenInit (KdScreenInfo *screen)
{
    AndroidScreenPriv *scrpriv;

    scrpriv = calloc(1, sizeof (AndroidScreenPriv));
    if (!scrpriv)
	return FALSE;
    screen->driver = scrpriv;
    if (!androidScreenInitialize (screen, scrpriv))
    {
	screen->driver = 0;
	free(scrpriv);
	return FALSE;
    }
    return TRUE;
}
    
void *
androidWindowLinear (ScreenPtr	pScreen,
		   CARD32	row,
		   CARD32	offset,
		   int		mode,
		   CARD32	*size,
		   void		*closure)
{
    KdScreenPriv(pScreen);
    AndroidPriv	    *priv = pScreenPriv->card->driver;

    if (!pScreenPriv->enabled)
	return 0;
    *size = priv->bytes_per_line;
    return priv->base + row * priv->bytes_per_line;
}

Bool
androidMapFramebuffer (KdScreenInfo *screen)
{
    AndroidScreenPriv	*scrpriv = screen->driver;
    KdPointerMatrix	m;
    AndroidPriv		*priv = screen->card->driver;

#if 1
    if (scrpriv->randr != RR_Rotate_0)
	scrpriv->shadow = TRUE;
    else
	scrpriv->shadow = FALSE;
#else
    scrpriv->shadow = TRUE;
#endif

    LogMessage(X_DEFAULT, "[native] androidMapFramebuffer: shadow: %d", (int)scrpriv->shadow);
    
    KdComputePointerMatrix (&m, scrpriv->randr, screen->width, screen->height);
    
    KdSetPointerMatrix (&m);
    
    priv->bytes_per_line = ((screen->width * screen->fb.bitsPerPixel + 31) >> 5) << 2;
    free(priv->base);
    priv->base = malloc (priv->bytes_per_line * screen->height);
    
    if (scrpriv->shadow)
    {
	if (!KdShadowFbAlloc (screen, scrpriv->randr & (RR_Rotate_90|RR_Rotate_270)))
	    return FALSE;
    }
    else
    {
        screen->fb.byteStride = priv->bytes_per_line;
        screen->fb.pixelStride = (priv->bytes_per_line * 8/
				     screen->fb.bitsPerPixel);
        screen->fb.frameBuffer = (CARD8 *) (priv->base);
    }

    /* initFramebuffer here for now */
//    androidInitNativeFramebuffer(screen, screen->width, screen->height, screen->fb.depth);
    LogMessage(X_DEFAULT, "[android] androidMapFramebuffer: initFramebuffer base: %p buf: %p width: %d height: %d depth: %d", priv->base, priv->buf, screen->width, screen->height, screen->fb.depth);
    androidInitNativeFramebuffer(priv->base, &(priv->buf), screen->width, screen->height, screen->fb.depth);
    
    return TRUE;
}

void
androidSetScreenSizes (ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	*screen = pScreenPriv->screen;
    AndroidScreenPriv	*scrpriv = screen->driver;

    if (scrpriv->randr & (RR_Rotate_0|RR_Rotate_180))
    {
	pScreen->width = screen->width;
	pScreen->height = screen->height;
	pScreen->mmWidth = screen->width_mm;
	pScreen->mmHeight = screen->height_mm;
    }
    else
    {
	pScreen->width = screen->width;
	pScreen->height = screen->height;
	pScreen->mmWidth = screen->height_mm;
	pScreen->mmHeight = screen->width_mm;
    }
}

Bool
androidUnmapFramebuffer (KdScreenInfo *screen)
{
    AndroidPriv		*priv = screen->card->driver;
    KdShadowFbFree (screen);
    if (priv->base)
    {
	free (priv->base);
	priv->base = 0;
    }
    return TRUE;
}

Bool
androidSetShadow (ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	*screen = pScreenPriv->screen;
    AndroidScreenPriv	*scrpriv = screen->driver;
    ShadowUpdateProc	update;
    ShadowWindowProc	window;

    window = androidWindowLinear;
    update = 0;
    if (scrpriv->randr)
	update = shadowUpdateRotatePacked;
    else
	update = shadowUpdatePacked;
    return KdShadowSet (pScreen, scrpriv->randr, update, window);
}


#ifdef RANDR
Bool
androidRandRGetInfo (ScreenPtr pScreen, Rotation *rotations)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	    *screen = pScreenPriv->screen;
    AndroidScreenPriv	    *scrpriv = screen->driver;
    RRScreenSizePtr	    pSize;
    Rotation		    randr;
    int			    n;
    
    *rotations = RR_Rotate_All|RR_Reflect_All;
    
    for (n = 0; n < pScreen->numDepths; n++)
	if (pScreen->allowedDepths[n].numVids)
	    break;
    if (n == pScreen->numDepths)
	return FALSE;
    
    pSize = RRRegisterSize (pScreen,
			    screen->width,
			    screen->height,
			    screen->width_mm,
			    screen->height_mm);
    
    randr = KdSubRotation (scrpriv->randr, screen->randr);
    
    RRSetCurrentConfig (pScreen, randr, 0, pSize);
    
    return TRUE;
}

Bool
androidRandRSetConfig (ScreenPtr		pScreen,
		     Rotation		randr,
		     int		rate,
		     RRScreenSizePtr	pSize)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	*screen = pScreenPriv->screen;
    AndroidScreenPriv	*scrpriv = screen->driver;
    Bool		wasEnabled = pScreenPriv->enabled;
    AndroidScreenPriv	oldscr;
    int			oldwidth;
    int			oldheight;
    int			oldmmwidth;
    int			oldmmheight;
    int			newwidth, newheight;

    if (screen->randr & (RR_Rotate_0|RR_Rotate_180))
    {
	newwidth = pSize->width;
	newheight = pSize->height;
    }
    else
    {
	newwidth = pSize->height;
	newheight = pSize->width;
    }

    if (wasEnabled)
	KdDisableScreen (pScreen);

    oldscr = *scrpriv;
    
    oldwidth = screen->width;
    oldheight = screen->height;
    oldmmwidth = pScreen->mmWidth;
    oldmmheight = pScreen->mmHeight;
    
    /*
     * Set new configuration
     */
    
    scrpriv->randr = KdAddRotation (screen->randr, randr);

    androidUnmapFramebuffer (screen);
    
    if (!androidMapFramebuffer (screen))
	goto bail4;

    KdShadowUnset (screen->pScreen);

    if (!androidSetShadow (screen->pScreen))
	goto bail4;

    androidSetScreenSizes (screen->pScreen);

    /*
     * Set frame buffer mapping
     */
    (*pScreen->ModifyPixmapHeader) (fbGetScreenPixmap (pScreen),
				    pScreen->width,
				    pScreen->height,
				    screen->fb.depth,
				    screen->fb.bitsPerPixel,
				    screen->fb.byteStride,
				    screen->fb.frameBuffer);
    
    /* set the subpixel order */
    
    KdSetSubpixelOrder (pScreen, scrpriv->randr);
    if (wasEnabled)
	KdEnableScreen (pScreen);

    return TRUE;

bail4:
    androidUnmapFramebuffer (screen);
    *scrpriv = oldscr;
    (void) androidMapFramebuffer (screen);
    pScreen->width = oldwidth;
    pScreen->height = oldheight;
    pScreen->mmWidth = oldmmwidth;
    pScreen->mmHeight = oldmmheight;
    
    if (wasEnabled)
	KdEnableScreen (pScreen);
    return FALSE;
}

Bool
androidRandRInit (ScreenPtr pScreen)
{
    rrScrPrivPtr    pScrPriv;
    
    if (!RRScreenInit (pScreen))
	return FALSE;

    pScrPriv = rrGetScrPriv(pScreen);
    pScrPriv->rrGetInfo = androidRandRGetInfo;
    pScrPriv->rrSetConfig = androidRandRSetConfig;
    return TRUE;
}
#endif

Bool
androidCreateColormap (ColormapPtr pmap)
{
    return fbInitializeColormap (pmap);
}

Bool
androidInitScreen (ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	*screen = pScreenPriv->screen;

#ifdef TOUCHSCREEN
    KdTsPhyScreen = pScreen->myNum;
#endif

    androidInitNativeScreen(screen);

    pScreen->CreateColormap = androidCreateColormap;
    return TRUE;
}

Bool
androidFinishInitScreen (ScreenPtr pScreen)
{
    if (!shadowSetup (pScreen))
	return FALSE;

#ifdef RANDR
    if (!androidRandRInit (pScreen))
	return FALSE;
#endif
    
    return TRUE;
}


Bool
androidCreateResources (ScreenPtr pScreen)
{
    KdScreenPriv(pScreen);
    KdScreenInfo	*screen    = pScreenPriv->screen;
    AndroidScreenPriv *scrpriv  = screen->driver;

    if (scrpriv->shadow)
        return KdShadowSet (pScreen,
            scrpriv->randr,
            androidShadowUpdate,
            androidWindowLinear
        );
    else
        return androidSetInternalDamage(pScreen);

    //return androidSetShadow (pScreen);
}

void
androidPreserve (KdCardInfo *card)
{
}

Bool
androidEnable (ScreenPtr pScreen)
{
    return TRUE;
}

Bool
androidDPMS (ScreenPtr pScreen, int mode)
{
    return TRUE;
}

void
androidDisable (ScreenPtr pScreen)
{
}

void
androidRestore (KdCardInfo *card)
{
}

void
androidScreenFini (KdScreenInfo *screen)
{
}

void
androidCardFini (KdCardInfo *card)
{
    AndroidPriv	*priv = card->driver;

    free (priv->base);
    free(priv);
}

void
androidGetColors (ScreenPtr pScreen, int n, xColorItem *pdefs)
{
    while (n--)
    {
	pdefs->red = 0;
	pdefs->green = 0;
	pdefs->blue = 0;
	pdefs++;
    }
}

void
androidPutColors (ScreenPtr pScreen, int n, xColorItem *pdefs)
{
}

/* track damage and update the process */
/* based on Android */

void 
androidShadowUpdate (ScreenPtr pScreen, shadowBufPtr pBuf)
{
  KdScreenPriv(pScreen);
  KdScreenInfo *screen = pScreenPriv->screen;
  
//  Android_LOG("slow paint");
  
  /* FIXME: Slow Rotated/Reflected updates could be much
   * much faster efficiently updating via tranforming 
   * pBuf->pDamage  regions     
  */
  shadowUpdateRotatePacked(pScreen, pBuf);
  //hostx_paint_rect(screen, 0,0,0,0, screen->width, screen->height);
  //androidDraw(screen,0, 0, /*?*/ screen->width, screen->height);
  androidDraw(0, 0, /*?*/ screen->width, screen->height);
}

static void
androidInternalDamageRedisplay (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  AndroidScreenPriv	*scrpriv = screen->driver;
  RegionPtr	 pRegion;

  if (!scrpriv || !scrpriv->pDamage)
    return;

  pRegion = DamageRegion (scrpriv->pDamage);

  if (RegionNotEmpty(pRegion))
    {
      int           nbox;
      BoxPtr        pbox;

      nbox = RegionNumRects (pRegion);
      pbox = RegionRects (pRegion);

      while (nbox--)
        {
/*
          hostx_paint_rect(screen,
                           pbox->x1, pbox->y1,
                           pbox->x1, pbox->y1,
                           pbox->x2 - pbox->x1,
                           pbox->y2 - pbox->y1);
*/
          androidDraw(pbox->x1, pbox->y1,
                      /* ? */
                      pbox->x2 - pbox->x1,
                      pbox->y2 - pbox->y1);
          pbox++;
        }
      DamageEmpty (scrpriv->pDamage);
    }
}

static void
androidInternalDamageBlockHandler (pointer   data,
				 OSTimePtr pTimeout,
				 pointer   pRead)
{
  ScreenPtr pScreen = (ScreenPtr) data;
  
  androidInternalDamageRedisplay (pScreen);
}

static void
androidInternalDamageWakeupHandler (pointer data, int i, pointer LastSelectMask)
{
  /* FIXME: Not needed ? */
}

Bool
androidSetInternalDamage (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  AndroidScreenPriv	*scrpriv = screen->driver;
  PixmapPtr      pPixmap = NULL;
  
  scrpriv->pDamage = DamageCreate ((DamageReportFunc) 0,
				   (DamageDestroyFunc) 0,
				   DamageReportNone,
				   TRUE,
				   pScreen,
				   pScreen);
  
  if (!RegisterBlockAndWakeupHandlers (androidInternalDamageBlockHandler,
				       androidInternalDamageWakeupHandler,
				       (pointer) pScreen))
    return FALSE;
  
  pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
  
  DamageRegister (&pPixmap->drawable, scrpriv->pDamage);
      
  return TRUE;
}

void
androidUnsetInternalDamage (ScreenPtr pScreen)
{
  KdScreenPriv(pScreen);
  KdScreenInfo	*screen = pScreenPriv->screen;
  AndroidScreenPriv	*scrpriv = screen->driver;
  PixmapPtr      pPixmap = NULL;
  
  pPixmap = (*pScreen->GetScreenPixmap) (pScreen);
  DamageUnregister (&pPixmap->drawable, scrpriv->pDamage);
  DamageDestroy (scrpriv->pDamage);
  
  RemoveBlockAndWakeupHandlers (androidInternalDamageBlockHandler,
				androidInternalDamageWakeupHandler,
				(pointer) pScreen);
}

/* AndroidMouse */
static Status
AndroidMouseInit (KdPointerInfo *pi)
{
  int res;

  pi->driverPrivate = (AndroidPointerPriv *)
                         calloc(sizeof(AndroidPointerPriv), 1);
  ((AndroidPointerPriv *)pi->driverPrivate)->enabled = FALSE;
  pi->nAxes = 3;
  pi->nButtons = 32;
  free(pi->name);
  pi->name = strdup("Xephyr virtual AndroidMouse");
  androidMouse = pi;

  res = androidInitNativeMouse(pi);
  LogMessage(X_DEFAULT, "[native] AndroidMouseInit: res: %d", res);
  if (res) return res;

  return Success;
}

static Status
AndroidMouseEnable (KdPointerInfo *pi)
{
    ((AndroidPointerPriv *)pi->driverPrivate)->enabled = TRUE;
    return Success;
}

static void
AndroidMouseDisable (KdPointerInfo *pi)
{
    ((AndroidPointerPriv *)pi->driverPrivate)->enabled = FALSE;
    return;
}

static void
AndroidMouseFini (KdPointerInfo *pi)
{
    androidMouse = NULL; 
    return;
}

KdPointerDriver AndroidMouseDriver = {
    "android",
    AndroidMouseInit,
    AndroidMouseEnable,
    AndroidMouseDisable,
    AndroidMouseFini,
    NULL,
};

/* Keyboard */

static Status
AndroidKeyboardInit (KdKeyboardInfo *ki)
{
  int res;

  LogMessage(X_DEFAULT, "[native] AndroidKeyboardInit: ki: %p", ki);

  ki->driverPrivate = (AndroidKeyboardPriv *)
                       calloc(sizeof(AndroidKeyboardPriv), 1);

  /*
  hostx_load_keymap();
  if (!AndroidKeySyms.map) {
      ErrorF("Couldn't load keymap from host\n");
      return BadAlloc;
  }
  */

  /*
  ki->minScanCode = AndroidKeySyms.minKeyCode;
  ki->maxScanCode = AndroidKeySyms.maxKeyCode;
  */

/*
http://developer.android.com/reference/android/view/KeyEvent.html#MAX_KEYCODE
This constant is deprecated.
There are now more than MAX_KEYCODE keycodes. Use getMaxKeyCode() instead.

MAX_KEYCODE current value: 84
*/

//  ki->minScanCode = 0; /* ? */
//  ki->maxScanCode = 84; /* FIXME */

  ki->minScanCode = 0;
  ki->maxScanCode = 255;

  free(ki->name);
  ki->name = strdup("AndroiX virtual keyboard");
  androidKbd = ki;

  res = androidInitNativeKeyboard(ki);
  LogMessage(X_DEFAULT, "[native] AndroidKeyboardInit: res: %d", res);
  if (res) return res;

  return Success;
}

static Status
AndroidKeyboardEnable (KdKeyboardInfo *ki)
{
  LogMessage(X_DEFAULT, "[native] AndroidKeyboardEnable: ki: %p", ki);

  ((AndroidKeyboardPriv *)ki->driverPrivate)->enabled = TRUE;

  return Success;
}

static void
AndroidKeyboardDisable (KdKeyboardInfo *ki)
{
    ((AndroidKeyboardPriv *)ki->driverPrivate)->enabled = FALSE;
}

static void
AndroidKeyboardFini (KdKeyboardInfo *ki)
{
    androidKbd = NULL;
    return;
}

static void
AndroidKeyboardLeds (KdKeyboardInfo *ki, int leds)
{
}

static void
AndroidKeyboardBell (KdKeyboardInfo *ki, int volume, int frequency, int duration)
{
}


KdKeyboardDriver AndroidKeyboardDriver = {
    "android",
    AndroidKeyboardInit,
    AndroidKeyboardEnable,
    AndroidKeyboardLeds,
    AndroidKeyboardBell,
    AndroidKeyboardDisable,
    AndroidKeyboardFini,
    NULL,
};

androix.c

#include <android.h>

#include <stdio.h>
#include <sys/socket.h>
#include <sys/stat.h>

static pthread_mutex_t miEventQueueMutex = PTHREAD_MUTEX_INITIALIZER;

jint
JNI_OnLoad(JavaVM *jvm, void *reserved) {
//    xandroid_jvm = jvm; // pass to kdandroid driver
//    LOG("xandroid_jvm: %.8x", xandroid_jvm);

    Android = (AndroidVars *)calloc(sizeof(AndroidVars), 1);
    Android->miEventQueueMutex = &miEventQueueMutex;
    androidInitNative(jvm);

    return JNI_VERSION_1_4;
}

void
Java_net_homeip_ofn_androix_AndroiXLib_init( JNIEnv* env, jobject thiz )
{
    struct stat stats;
    int mode = 0666;
    
    char *argv[] = {":1"};
    char *envp[] = {};

    xandroid_jni_env = env; // pass to kdandroid driver
    LOG("xandroid_jni_env: %p", xandroid_jni_env);

    LOG("fixing up /data/data/net.homeip.ofn.androix/usr/bin/xkbcomp");

    chmod("/data/data/net.homeip.ofn.androix/usr/bin/xkbcomp", 0775);

    LOG("done.");

    stat("/data/data/net.homeip.ofn.androix/usr/bin/xkbcomp", &stats);

    LOG("/data/data/net.homeip.ofn.androix/usr/bin/xkbcomp mode: %o" + stats.st_mode);

    LOG("creating event wakeup socket pair");
    socketpair(AF_UNIX, SOCK_STREAM, 0, &(Android->wakeupFD));
    LOG("remote (Xorg) socket: %d", Android->wakeupFD[0]);
    LOG("local (android) socket: %d", Android->wakeupFD[1]);
    
    LOG("starting DIX");
	dix_main(1, argv, envp);
    LOG("returning from DIX (this shouldn't happen)");
}

void wakeupFD() {
   	char nullbyte=0;
	//  <daniels> oh, i ... er ... christ.
	write(Android->wakeupFD[1], &nullbyte, sizeof(nullbyte));
}

void
Java_net_homeip_ofn_androix_AndroiXLib_keyDown( JNIEnv* env, jobject thiz, jint kbd, jint keyCode )
{
    LOG("keyDown: kbd: %p keyCode: %d", kbd, keyCode);
    wakeupFD();

    //androidRequestInputLock();
//    LOG("keyDown: taking miEventQueueMutex");
//    pthread_mutex_lock(Android->miEventQueueMutex);
    androidCallbackKeyDown((void *)kbd, keyCode);
    wakeupFD();
    //androidReleaseInputLock();
//    LOG("keyDown: releasing miEventQueueMutex");
//    pthread_mutex_unlock(Android->miEventQueueMutex);
}

void
Java_net_homeip_ofn_androix_AndroiXLib_keyUp( JNIEnv* env, jobject thiz, jint kbd, jint keyCode )
{
    LOG("keyUp: kbd: %p keyCode: %d", (unsigned int)kbd, keyCode);
    //androidRequestInputLock();
//    LOG("keyUp: taking miEventQueueMutex");
//    pthread_mutex_lock(Android->miEventQueueMutex);
    androidCallbackKeyUp((void *)kbd, keyCode);
    wakeupFD();
    //androidReleaseInputLock();
//    LOG("keyUp: releasing miEventQueueMutex");
//    pthread_mutex_unlock(Android->miEventQueueMutex);
}

void
Java_net_homeip_ofn_androix_AndroiXLib_touchDown( JNIEnv* env, jobject thiz, jint mouse, jint x, jint y )
{
    LOG("touchDown: mouse: %p x: %d y: %d", mouse, x, y);
    //androidRequestInputLock();
//    LOG("touchDown: taking miEventQueueMutex");
//    pthread_mutex_lock(Android->miEventQueueMutex);
    androidCallbackTouchDown((void *)mouse, x, y);
    wakeupFD();
    //androidReleaseInputLock();
//    LOG("touchDown: releasing miEventQueueMutex");
//    pthread_mutex_unlock(Android->miEventQueueMutex);
}

void
Java_net_homeip_ofn_androix_AndroiXLib_touchUp( JNIEnv* env, jobject thiz, jint mouse, jint x, jint y )
{
    LOG("touchUp: mouse: %p x: %d y: %d", mouse, x, y);
    //androidRequestInputLock();
//    LOG("touchUp: taking miEventQueueMutex");
//    pthread_mutex_lock(Android->miEventQueueMutex);
    androidCallbackTouchUp((void *)mouse, x, y);
    wakeupFD();
    //androidReleaseInputLock();
//    LOG("touchUp: releasing miEventQueueMutex");
//    pthread_mutex_unlock(Android->miEventQueueMutex);
}

callback.c

#include <jni.h>

#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "kdandroid.h"
#include <inputstr.h>
#include <mi.h>

CARD32 lastEventTime = 0;
EventList *androidEvents;

void androidCallbackKeyDown(void *kbdPtr, int keyCode) {
    int i, n;
    KdKeyboardInfo *kbd = kbdPtr;

    LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: kbd: %.8x keyCode: %d", (unsigned int)kbd, keyCode);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: kbd->dixdev: %.8x", (unsigned int)(kbd->dixdev));
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: kbd->dixdev->kbdfeed: %.8x", (unsigned int)(kbd->dixdev->kbdfeed));
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: kbd->dixdev->key: %.8x", (unsigned int)(kbd->dixdev->key));

    GetEventList(&androidEvents);
    //lastEventTime = GetTimeInMillis();
    n = GetKeyboardEvents(androidEvents, kbd->dixdev, KeyPress, keyCode);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: n: %d", n);
    for (i = 0; i < n; i++) {
        mieqEnqueue(kbd->dixdev, (InternalEvent*)(androidEvents + i)->event);
        LogMessage(X_DEFAULT, "[native] androidCallbackKeyDown: enqueueing event KeyPress %d", keyCode);
    };

    //KdEnqueueKeyboardEvent (kbd, keyCode, FALSE);
}

void androidCallbackKeyUp(void *kbdPtr, int keyCode) {
    int i, n;
    KdKeyboardInfo *kbd = kbdPtr;

    LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: kbd: %p keyCode: %d", kbd, keyCode);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: kbd->dixdev: %p", kbd->dixdev);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: kbd->dixdev->kbdfeed: %p", kbd->dixdev->kbdfeed);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: kbd->dixdev->key: %p", kbd->dixdev->key);

    GetEventList(&androidEvents);
    //lastEventTime = GetTimeInMillis();
    n = GetKeyboardEvents(androidEvents, kbd->dixdev, KeyRelease, keyCode);
    LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: n: %d", n);
    for (i = 0; i < n; i++) {
        mieqEnqueue(kbd->dixdev, (InternalEvent*)(androidEvents + i)->event);
        LogMessage(X_DEFAULT, "[native] androidCallbackKeyUp: enqueueing event KeyRelease %d", keyCode);
    };

    //KdEnqueueKeyboardEvent (kbd, keyCode, TRUE);
}

void androidCallbackTouchDown(void *mousePtr, int x, int y) {
    int i, n;
    int v[3] = {x, y, 1};
    KdPointerInfo *mouse = mousePtr;

    LogMessage(X_DEFAULT, "[native] androidCallbackTouchDown: mouse: %p x: %d y: %d", mouse, x, y);

    GetEventList(&androidEvents);
    n = GetPointerEvents(androidEvents, mouse->dixdev, MotionNotify, 1, POINTER_ABSOLUTE, 0, 3, v);
    LogMessage(X_DEFAULT, "[native] andriodCallbackTouchDown mouse->dixdev->enabled: %d", mouse->dixdev->enabled);
    LogMessage(X_DEFAULT, "[native] androidCallbackTouchDown: n: %d", n);
    for (i = 0; i < n; i++) {
        mieqEnqueue(mouse->dixdev, (InternalEvent*)(androidEvents + i)->event);
        LogMessage(X_DEFAULT, "[native] androidCallbackTouchDown: enqueueing event MotionNotify %d %d %d", x, y, 1);
    };
}

void androidCallbackTouchUp(void *mousePtr, int x, int y) {
    int i, n;
    int v[3] = {x, y, 0};
    KdPointerInfo *mouse = mousePtr;

    LogMessage(X_DEFAULT, "[native] androidCallbackTouchUp: mouse: %p x: %d y: %d", mouse, x, y);

    GetEventList(&androidEvents);
    n = GetPointerEvents(androidEvents, mouse->dixdev, MotionNotify, 1, POINTER_ABSOLUTE, 0, 3, v);
    LogMessage(X_DEFAULT, "[native] androidCallbackTouchUp mouse->dixdev->enable: %d", mouse->dixdev->enabled);
    LogMessage(X_DEFAULT, "[native] androidCallbackTouchUp: n: %d", n);
    for (i = 0; i < n; i++) {
        mieqEnqueue(mouse->dixdev, (InternalEvent*)(androidEvents + i)->event);
        LogMessage(X_DEFAULT, "[native] androidCallbackTouchUp: enqueueing event MotionNotify %d %d %d", x, y, 0);
    };
}

kdandroid.h

/*
 * Copyright © 2004 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _KDANDROID_H_
#define _KDANDROID_H_
#include <stdio.h>
#include <unistd.h>
#include "kdrive.h"

#ifdef RANDR
#include "randrstr.h"
#endif

#include "private.h"
#include "native.h"

extern KdCardFuncs  androidFuncs;
extern KdKeyboardInfo *androidKbd;
extern KdPointerInfo *androidMouse;

/* drivers */
extern KdPointerDriver AndroidMouseDriver;
extern KdKeyboardDriver	AndroidKeyboardDriver;

Bool
androidInitialize (KdCardInfo *card, AndroidPriv *priv);

Bool
androidCardInit (KdCardInfo *card);

Bool
androidScreenInit (KdScreenInfo *screen);

Bool
androidScreenInitialize (KdScreenInfo *screen, AndroidScreenPriv *scrpriv);
    
Bool
androidInitScreen (ScreenPtr pScreen);

Bool
androidFinishInitScreen (ScreenPtr pScreen);

Bool
androidCreateResources (ScreenPtr pScreen);

void
androidPreserve (KdCardInfo *card);

Bool
androidEnable (ScreenPtr pScreen);

Bool
androidDPMS (ScreenPtr pScreen, int mode);

void
androidDisable (ScreenPtr pScreen);

void
androidRestore (KdCardInfo *card);

void
androidScreenFini (KdScreenInfo *screen);

void
androidCardFini (KdCardInfo *card);

void
androidGetColors (ScreenPtr pScreen, int n, xColorItem *pdefs);

void
androidPutColors (ScreenPtr pScreen, int n, xColorItem *pdefs);

Bool
androidMapFramebuffer (KdScreenInfo *screen);

void *
androidWindowLinear (ScreenPtr	pScreen,
		   CARD32	row,
		   CARD32	offset,
		   int		mode,
		   CARD32	*size,
		   void		*closure);

void
androidSetScreenSizes (ScreenPtr pScreen);

Bool
androidUnmapFramebuffer (KdScreenInfo *screen);

Bool
androidSetShadow (ScreenPtr pScreen);

Bool
androidCreateColormap (ColormapPtr pmap);
    
#ifdef RANDR
Bool
androidRandRGetInfo (ScreenPtr pScreen, Rotation *rotations);

Bool
androidRandRSetConfig (ScreenPtr		pScreen,
		     Rotation		randr,
		     int		rate,
		     RRScreenSizePtr	pSize);
Bool
androidRandRInit (ScreenPtr pScreen);

void 
androidShadowUpdate (ScreenPtr pScreen, shadowBufPtr pBuf);

#endif

extern KdPointerDriver FakePointerDriver;

extern KdKeyboardDriver	FakeKeyboardDriver;

extern KdOsFuncs   AndroidOsFuncs;

/* internal damage */
void
androidUnsetInternalDamage (ScreenPtr pScreen);

Bool
androidSetInternalDamage (ScreenPtr pScreen);


#endif /* _KDANDROID_H_ */

mieq.c

/*
 *
Copyright 1990, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
 *
 * Author:  Keith Packard, MIT X Consortium
 */

/*
 * mieq.c
 *
 * Machine independent event queue
 *
 */

#if HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

# include   <X11/X.h>
# include   <X11/Xmd.h>
# include   <X11/Xproto.h>
# include   "misc.h"
# include   "windowstr.h"
# include   "pixmapstr.h"
# include   "inputstr.h"
# include   "mi.h"
# include   "mipointer.h"
# include   "scrnintstr.h"
# include   <X11/extensions/XI.h>
# include   <X11/extensions/XIproto.h>
# include   <X11/extensions/geproto.h>
# include   "extinit.h"
# include   "exglobals.h"
# include   "eventstr.h"

#ifdef DPMSExtension
# include "dpmsproc.h"
# include <X11/extensions/dpmsconst.h>
#endif

#define QUEUE_SIZE  512

#define EnqueueScreen(dev) dev->spriteInfo->sprite->pEnqueueScreen
#define DequeueScreen(dev) dev->spriteInfo->sprite->pDequeueScreen

typedef struct _Event {
    EventListPtr    events;
    ScreenPtr	    pScreen;
    DeviceIntPtr    pDev; /* device this event _originated_ from */
} EventRec, *EventPtr;

typedef struct _EventQueue {
    HWEventQueueType head, tail;         /* long for SetInputCheck */
    CARD32           lastEventTime;      /* to avoid time running backwards */
    int              lastMotion;         /* device ID if last event motion? */
    EventRec         events[QUEUE_SIZE]; /* static allocation for signals */
    mieqHandler      handlers[128];      /* custom event handler */
} EventQueueRec, *EventQueuePtr;

static EventQueueRec miEventQueue;



#ifdef XQUARTZ
#include  <pthread.h>
static pthread_mutex_t miEventQueueMutex = PTHREAD_MUTEX_INITIALIZER;

extern BOOL serverInitComplete;
extern pthread_mutex_t serverInitCompleteMutex;
extern pthread_cond_t serverInitCompleteCond;

static inline void wait_for_server_init(void) {
    /* If the server hasn't finished initializing, wait for it... */
    if(!serverInitComplete) {
        pthread_mutex_lock(&serverInitCompleteMutex);
        while(!serverInitComplete)
            pthread_cond_wait(&serverInitCompleteCond, &serverInitCompleteMutex);
        pthread_mutex_unlock(&serverInitCompleteMutex);
    }
}
#endif
#ifdef ANDROID
#include  <pthread.h>
#include "../android/jni/android.h"
//static pthread_mutex_t miEventQueueMutex = PTHREAD_MUTEX_INITIALIZER;
//Bool hasAndroidLock = FALSE;
#endif


Bool
mieqInit(void)
{
    int i;

    miEventQueue.head = miEventQueue.tail = 0;
    miEventQueue.lastEventTime = GetTimeInMillis ();
    miEventQueue.lastMotion = FALSE;
    for (i = 0; i < 128; i++)
        miEventQueue.handlers[i] = NULL;
    for (i = 0; i < QUEUE_SIZE; i++)
    {
	if (miEventQueue.events[i].events == NULL) {
	    EventListPtr evlist = InitEventList(1);
	    if (!evlist)
		FatalError("Could not allocate event queue.\n");
	    miEventQueue.events[i].events = evlist;
	}
    }

    SetInputCheck(&miEventQueue.head, &miEventQueue.tail);
    return TRUE;
}

void
mieqFini(void)
{
    int i;
    for (i = 0; i < QUEUE_SIZE; i++)
    {
	if (miEventQueue.events[i].events != NULL) {
	    FreeEventList(miEventQueue.events[i].events, 1);
	    miEventQueue.events[i].events = NULL;
	}
    }
}

/*
 * Must be reentrant with ProcessInputEvents.  Assumption: mieqEnqueue
 * will never be interrupted.  If this is called from both signal
 * handlers and regular code, make sure the signal is suspended when
 * called from regular code.
 */

void
mieqEnqueue(DeviceIntPtr pDev, InternalEvent *e)
{
    unsigned int           oldtail = miEventQueue.tail;
    EventListPtr           evt;
    int                    isMotion = 0;
    int                    evlen;
    Time                   time;

#ifdef XQUARTZ
    wait_for_server_init();
    pthread_mutex_lock(&miEventQueueMutex);
#endif
#ifdef XANDROID
    LogMessage(X_DEFAULT, "[native] [mieq] mieqEnqueue: waiting on lock");
    pthread_mutex_lock(Android->miEventQueueMutex);
    LogMessage(X_DEFAULT, "[native] [mieq] mieqEnqueue: acquired lock");
#endif

    CHECKEVENT(e);

    /* avoid merging events from different devices */
    if (e->any.type == ET_Motion)
        isMotion = pDev->id;

    if (isMotion && isMotion == miEventQueue.lastMotion &&
        oldtail != miEventQueue.head) {
        oldtail = (oldtail - 1) % QUEUE_SIZE;
    }
    else {
        static int stuck = 0;
        /* Toss events which come in late.  Usually this means your server's
         * stuck in an infinite loop somewhere, but SIGIO is still getting
         * handled. */
        if (((oldtail + 1) % QUEUE_SIZE) == miEventQueue.head) {
            if (!stuck) {
                ErrorF("[mi] EQ overflowing. The server is probably stuck "
                        "in an infinite loop.\n");
                xorg_backtrace();
                stuck = 1;
            }
#ifdef XQUARTZ
            pthread_mutex_unlock(&miEventQueueMutex);
#endif
#ifdef XANDROID
//	    pthread_mutex_unlock(&miEventQueueMutex);
//        androidReleaseInputLock();
        pthread_mutex_unlock(Android->miEventQueueMutex);
        LogMessage(X_DEFAULT, "[native] [mieq] mieqEnqueue: releasing miEventQueueMutex");
#endif
	        return;
        }
        stuck = 0;
    }

    evlen = e->any.length;
    evt = miEventQueue.events[oldtail].events;
    if (evt->evlen < evlen)
    {
        evt->evlen = evlen;
        evt->event = realloc(evt->event, evt->evlen);
        if (!evt->event)
        {
            ErrorF("[mi] Running out of memory. Tossing event.\n");
#ifdef XQUARTZ
            pthread_mutex_unlock(&miEventQueueMutex);
#endif
#ifdef XANDROID
//	    pthread_mutex_unlock(&miEventQueueMutex);
//        androidReleaseInputLock();
        pthread_mutex_unlock(Android->miEventQueueMutex);
        LogMessage(X_DEFAULT, "[native] [mieq] mieqEnqueue: releasing miEventQueueMutex");
#endif
            return;
        }
    }

    memcpy(evt->event, e, evlen);

    time = e->any.time;
    /* Make sure that event times don't go backwards - this
     * is "unnecessary", but very useful. */
    if (time < miEventQueue.lastEventTime &&
        miEventQueue.lastEventTime - time < 10000)
        e->any.time = miEventQueue.lastEventTime;

    miEventQueue.lastEventTime = ((InternalEvent*)evt->event)->any.time;
    miEventQueue.events[oldtail].pScreen = pDev ? EnqueueScreen(pDev) : NULL;
    miEventQueue.events[oldtail].pDev = pDev;

    miEventQueue.lastMotion = isMotion;
    miEventQueue.tail = (oldtail + 1) % QUEUE_SIZE;
#ifdef XQUARTZ
    pthread_mutex_unlock(&miEventQueueMutex);
#endif
#ifdef XANDROID
//    pthread_mutex_unlock(&miEventQueueMutex);
//    androidReleaseInputLock();
    pthread_mutex_unlock(Android->miEventQueueMutex);
    LogMessage(X_DEFAULT, "[native] [mieq] mieqEnqueue: releasing miEventQueueMutex");
#endif
}

void
mieqSwitchScreen(DeviceIntPtr pDev, ScreenPtr pScreen, Bool fromDIX)
{
#ifdef XQUARTZ
    pthread_mutex_lock(&miEventQueueMutex);
#endif
    EnqueueScreen(pDev) = pScreen;
    if (fromDIX)
        DequeueScreen(pDev) = pScreen;
#ifdef XQUARTZ
    pthread_mutex_unlock(&miEventQueueMutex);
#endif
}

void
mieqSetHandler(int event, mieqHandler handler)
{
#ifdef XQUARTZ
    pthread_mutex_lock(&miEventQueueMutex);
#endif
    if (handler && miEventQueue.handlers[event])
        ErrorF("[mi] mieq: warning: overriding existing handler %p with %p for "
               "event %d\n", miEventQueue.handlers[event], handler, event);

    miEventQueue.handlers[event] = handler;
#ifdef XQUARTZ
    pthread_mutex_unlock(&miEventQueueMutex);
#endif
}

/**
 * Change the device id of the given event to the given device's id.
 */
static void
ChangeDeviceID(DeviceIntPtr dev, InternalEvent* event)
{
    switch(event->any.type)
    {
        case ET_Motion:
        case ET_KeyPress:
        case ET_KeyRelease:
        case ET_ButtonPress:
        case ET_ButtonRelease:
        case ET_ProximityIn:
        case ET_ProximityOut:
        case ET_Hierarchy:
        case ET_DeviceChanged:
            event->device_event.deviceid = dev->id;
            break;
#if XFreeXDGA
        case ET_DGAEvent:
            break;
#endif
        case ET_RawKeyPress:
        case ET_RawKeyRelease:
        case ET_RawButtonPress:
        case ET_RawButtonRelease:
        case ET_RawMotion:
            event->raw_event.deviceid = dev->id;
            break;
        default:
            ErrorF("[mi] Unknown event type (%d), cannot change id.\n",
                   event->any.type);
    }
}

static void
FixUpEventForMaster(DeviceIntPtr mdev, DeviceIntPtr sdev,
                    InternalEvent* original, InternalEvent *master)
{
    CHECKEVENT(original);
    CHECKEVENT(master);
    /* Ensure chained button mappings, i.e. that the detail field is the
     * value of the mapped button on the SD, not the physical button */
    if (original->any.type == ET_ButtonPress ||
        original->any.type == ET_ButtonRelease)
    {
        int btn = original->device_event.detail.button;
        if (!sdev->button)
            return; /* Should never happen */

        master->device_event.detail.button = sdev->button->map[btn];
    }
}

/**
 * Copy the given event into master.
 * @param sdev The slave device the original event comes from
 * @param original The event as it came from the EQ
 * @param copy The event after being copied
 * @return The master device or NULL if the device is a floating slave.
 */
DeviceIntPtr
CopyGetMasterEvent(DeviceIntPtr sdev,
                   InternalEvent* original, InternalEvent *copy)
{
    DeviceIntPtr mdev;
    int len = original->any.length;

    CHECKEVENT(original);

    /* ET_XQuartz has sdev == NULL */
    if (!sdev || !sdev->u.master)
        return NULL;

    switch(original->any.type)
    {
        case ET_KeyPress:
        case ET_KeyRelease:
            mdev = GetMaster(sdev, MASTER_KEYBOARD);
            break;
        case ET_ButtonPress:
        case ET_ButtonRelease:
        case ET_Motion:
        case ET_ProximityIn:
        case ET_ProximityOut:
            mdev = GetMaster(sdev, MASTER_POINTER);
            break;
        default:
            mdev = sdev->u.master;
            break;
    }

    memcpy(copy, original, len);
    ChangeDeviceID(mdev, copy);
    FixUpEventForMaster(mdev, sdev, original, copy);

    return mdev;
}


/**
 * Post the given @event through the device hierarchy, as appropriate.
 * Use this function if an event must be posted for a given device during the
 * usual event processing cycle.
 */
void
mieqProcessDeviceEvent(DeviceIntPtr dev,
                       InternalEvent *event,
                       ScreenPtr screen)
{
    mieqHandler handler;
    int x = 0, y = 0;
    DeviceIntPtr master;
    InternalEvent mevent; /* master event */

    CHECKEVENT(event);

    /* Custom event handler */
    handler = miEventQueue.handlers[event->any.type];

    switch (event->any.type) {
        /* Catch events that include valuator information and check if they
         * are changing the screen */
        case ET_Motion:
        case ET_KeyPress:
        case ET_KeyRelease:
        case ET_ButtonPress:
        case ET_ButtonRelease:
            if (dev && screen && screen != DequeueScreen(dev) && !handler) {
                DequeueScreen(dev) = screen;
                x = event->device_event.root_x;
                y = event->device_event.root_y;
                NewCurrentScreen (dev, DequeueScreen(dev), x, y);
            }
            break;
        default:
            break;
    }
    master = CopyGetMasterEvent(dev, event, &mevent);

    if (master)
        master->u.lastSlave = dev;

    /* If someone's registered a custom event handler, let them
     * steal it. */
    if (handler)
    {
        int screenNum = dev && DequeueScreen(dev) ? DequeueScreen(dev)->myNum : (screen ? screen->myNum : 0);
        handler(screenNum, event, dev);
        /* Check for the SD's master in case the device got detached
         * during event processing */
        if (master && dev->u.master)
            handler(screenNum, &mevent, master);
    } else
    {
        /* process slave first, then master */
        dev->public.processInputProc(event, dev);

        /* Check for the SD's master in case the device got detached
         * during event processing */
        if (master && dev->u.master)
            master->public.processInputProc(&mevent, master);
    }
}

/* Call this from ProcessInputEvents(). */
void
mieqProcessInputEvents(void)
{
    EventRec *e = NULL;
    int evlen;
    ScreenPtr screen;
    static InternalEvent *event = NULL;
    static size_t event_size = 0;
    DeviceIntPtr dev = NULL,
                 master = NULL;

#ifdef XQUARTZ
    pthread_mutex_lock(&miEventQueueMutex);
#endif
#ifdef XANDROID
    LogMessage(X_DEFAULT, "[native] [mieq] mieqProcessInputEvents: acquiring miEventQueueMutex");
    pthread_mutex_lock(Android->miEventQueueMutex);
#endif
    
    while (miEventQueue.head != miEventQueue.tail) {
        e = &miEventQueue.events[miEventQueue.head];

        evlen   = e->events->evlen;
        if(evlen > event_size)
          {
            event = realloc(event, evlen);
            event_size = evlen;
          }


        if (!event)
            FatalError("[mi] No memory left for event processing.\n");

        memcpy(event, e->events->event, evlen);


        dev     = e->pDev;
        screen  = e->pScreen;

        miEventQueue.head = (miEventQueue.head + 1) % QUEUE_SIZE;

#ifdef XQUARTZ
        pthread_mutex_unlock(&miEventQueueMutex);
#endif
#ifdef XANDROID
	pthread_mutex_unlock(Android->miEventQueueMutex);
    LogMessage(X_DEFAULT, "[native] [mieq] mieqProcessInputEvents: releasing miEventQueueMutex");
#endif

        master  = (dev && !IsMaster(dev) && dev->u.master) ? dev->u.master : NULL;

        if (screenIsSaved == SCREEN_SAVER_ON)
            dixSaveScreens (serverClient, SCREEN_SAVER_OFF, ScreenSaverReset);
#ifdef DPMSExtension
        else if (DPMSPowerLevel != DPMSModeOn)
            SetScreenSaverTimer();

        if (DPMSPowerLevel != DPMSModeOn)
            DPMSSet(serverClient, DPMSModeOn);
#endif

        mieqProcessDeviceEvent(dev, event, screen);

        /* Update the sprite now. Next event may be from different device. */
        if (event->any.type == ET_Motion && master)
            miPointerUpdateSprite(dev);

#ifdef XQUARTZ
        pthread_mutex_lock(&miEventQueueMutex);
#endif
#ifdef XANDROID
	pthread_mutex_lock(Android->miEventQueueMutex);
    LogMessage(X_DEFAULT, "[native] [mieq] mieqProcessInputEvents: releasing miEventQueueMutex");

#endif
    }
#ifdef XQUARTZ
    pthread_mutex_unlock(&miEventQueueMutex);
#endif
#ifdef XANDROID
    pthread_mutex_unlock(Android->miEventQueueMutex);
    LogMessage(X_DEFAULT, "[native] [mieq] mieqProcessInputEvents: releasing miEventQueueMutex");
#endif
}

native.c

/*

Copyright 2010 Timothy Meade

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

#include "android.h"


void androidInitNative(JavaVM *jvm) {
    JNIEnv *jni_env;
    jclass AndroiXService_class;
    jfieldID blitview_id;
    jclass AndroiXBlitView_class;
    jobject blitview;
    
    Android->jvm = jvm;
    
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);                    
    AndroiXService_class = (*jni_env)->FindClass(jni_env, "net/homeip/ofn/androix/AndroiXService");
    LOG("[native] init: local AndroiXService_class: %p", AndroiXService_class);

    blitview_id = (*jni_env)->GetStaticFieldID(jni_env, AndroiXService_class, "blitView", "Lnet/homeip/ofn/androix/AndroiXBlitView;");
    blitview = (*jni_env)->GetStaticObjectField(jni_env, AndroiXService_class, blitview_id);
    LOG("[native] init: local blitview: %p", blitview);

    AndroiXBlitView_class = (*jni_env)->GetObjectClass(jni_env, blitview);
    LOG("[native] init: local AndroiXBlitView_class: %p", AndroiXBlitView_class);

    /* setup global references and cache methodIDs */
    Android->AndroiXService_class = (*jni_env)->NewGlobalRef(jni_env, AndroiXService_class);

    Android->AndroiXBlitView_class = (*jni_env)->NewGlobalRef(jni_env, AndroiXBlitView_class);
    Android->blitview = (*jni_env)->NewGlobalRef(jni_env, blitview);

    Android->initNativeScreen = (*jni_env)->GetMethodID(jni_env, Android->AndroiXBlitView_class, "initNativeScreen", "(I)I");
    Android->initNativeKeyboard = (*jni_env)->GetMethodID(jni_env, Android->AndroiXBlitView_class, "initNativeKeyboard", "(I)I");
    Android->initNativeMouse = (*jni_env)->GetMethodID(jni_env, Android->AndroiXBlitView_class, "initNativeMouse", "(I)I");
    Android->initFramebuffer = (*jni_env)->GetMethodID(jni_env, Android->AndroiXBlitView_class, "initFramebuffer", "(IIILjava/nio/ByteBuffer;)I");
    Android->draw = (*jni_env)->GetMethodID(jni_env, Android->AndroiXBlitView_class, "draw", "(IIII)V");

    (*jni_env)->DeleteLocalRef(jni_env, AndroiXService_class);
    (*jni_env)->DeleteLocalRef(jni_env, AndroiXBlitView_class);
    (*jni_env)->DeleteLocalRef(jni_env, blitview);
};

void androidInitNativeScreen(void *screen) {
    JNIEnv *jni_env;
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);
    (*jni_env)->CallIntMethod(jni_env, Android->blitview, Android->initNativeScreen, screen);
};

int androidInitNativeKeyboard(void *keyboard) {
    JNIEnv *jni_env;
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);

    return (*jni_env)->CallIntMethod(jni_env, Android->blitview, Android->initNativeKeyboard, keyboard);
};

int androidInitNativeMouse(void *mouse) {
    JNIEnv *jni_env;
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);
    return (*jni_env)->CallIntMethod(jni_env, Android->blitview, Android->initNativeMouse, mouse);
};

int androidInitNativeFramebuffer(void *base, void **bufPtr, int width, int height, int depth) {
    JNIEnv *jni_env;
    jobject *buf = (jobject *)bufPtr;
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);

    int bpp = depth/8;
    LOG("[native] androidInitNativeFramebuffer: base: %p buf: %p width: %d height: %d bpp: %d", base, buf, width, height, bpp);

    buf = (*jni_env)->NewDirectByteBuffer(jni_env, base, (width*height*bpp));

    jint res = (*jni_env)->CallIntMethod(jni_env, Android->blitview, Android->initFramebuffer, width, height, depth, buf);
    return res;
};

void androidDraw(int x, int y, int w, int h) {
    JNIEnv *jni_env;
    jmethodID initNativeMouse;
    LOG("[native] androidDraw: %d,%d %d x %d", x, y, w, h);
    (*(Android->jvm))->AttachCurrentThread(Android->jvm, &jni_env, NULL);
    (*jni_env)->CallVoidMethod(jni_env, Android->blitview, Android->draw, x, y, w, h);
};

native.h

#ifndef _KDANDROID_NATIVE_H_
#define _KDANDROID_NATIVE_H_
#include <stdio.h>
#include <unistd.h>
#include "kdrive.h"

#include "../../../android/jni/android.h"

/* callbacks */
void androidCallbackKeyDown(void *kbd, int keyCode);
void androidCallbackKeyUp(void *kbd, int keyCode);
void androidCallbackTouchDown(void *mouse, int x, int y);
void androidCallbackTouchUp(void *mouse, int x, int y);

#endif /* _KDANDROID_NATIVE_H_ */

os.c

/*
 * Copyright © 2004 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "kdandroid.h"

static void
AndroidWakeupFDRead(int wakeupFD, void *closure) {
    return;
}

static int
AndroidInit (void)
{
    LogMessage(X_DEFAULT, "adding wakeupFD: %d", Android->wakeupFD[0]);
    //KdAddFd(Android->wakeupFD[0]);
    KdRegisterFd(Android->wakeupFD[0], AndroidWakeupFDRead, NULL);
    //AddEnabledDevice(Android->wakeupFD[0]);
    return 1;
}

static void
AndroidEnable (void)
{
}

static Bool
AndroidSpecialKey (KeySym sym)
{
    return FALSE;
}

static void
AndroidDisable (void)
{
}

static void
AndroidFini (void)
{
}

KdOsFuncs   AndroidOsFuncs = {
    AndroidInit,
    AndroidEnable,
    AndroidSpecialKey,
    AndroidDisable,
    AndroidFini,
    0
};

private.h

#ifndef _KDANDROID_PRIV_H_
#define _KDANDROID_PRIV_H_
#include <stdio.h>
#include <unistd.h>
#include "kdrive.h"

#ifdef RANDR
#include "randrstr.h"
#endif

#include <jni.h>

typedef struct _androidPriv {
    CARD8	*base;
    int		bytes_per_line;

    jobject buf;    // the java nio buffer corresponding to base

    JavaVM *jvm;

} AndroidPriv;

typedef struct _androidScreenPriv {
    Rotation	randr;
    Bool	shadow;
    DamagePtr   pDamage;
    JavaVM *jvm;
    jclass      AndroiXBlitView_class;
    jobject     blitview;
    jmethodID   initFramebuffer;
    jmethodID   draw;
} AndroidScreenPriv;

typedef struct _androidKeyboardPriv {
    Bool    enabled;
} AndroidKeyboardPriv;

typedef struct _androidPointerPriv {
    Bool    enabled;
} AndroidPointerPriv;

#endif /* _KDANDROID_PRIV_H_ */

testsockets1.c

#include <sys/socket.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>

int fds[2];


int handle(int sig) {
    char buf[1024];
    int n;

    if (sig == SIGQUIT) exit(0);
    fprintf(stderr, "Got signal %d\n", sig);
    if (sig == SIGIO) {
        for(;;) {
            n = read(fds[0], buf, 1);
            write(1, buf, 1);
        };
    };
}

int main() {
    int n;
    struct sigaction act, oact;
//    memset(act, 0, sizeof(struct sigaction));
    act.sa_handler = handle;
    act.sa_flags = 0;

    socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
    sigaction(SIGIO, &act, &oact);
    fcntl(fds[0], F_SETOWN, getpid());

    for(;;) {
        n = write(fds[1], "X", 1);
    };
};