static jboolean
checkOverflow(jint dxoff, jint dyoff,
SurfaceDataBounds *pBounds,
TransformInfo *pItxInfo,
jdouble *retx, jdouble *rety)
{
jdouble x, y;
x = dxoff+pBounds->x1+0.5; /* Center of pixel x1 */
y = dyoff+pBounds->y1+0.5; /* Center of pixel y1 */
Transform_transform(pItxInfo, &x, &y);
*retx = x;
*rety = y;
if (TX_FIXED_UNSAFE(x) || TX_FIXED_UNSAFE(y)) {
return JNI_TRUE;
}
x = dxoff+pBounds->x2-0.5; /* Center of pixel x2-1 */
y = dyoff+pBounds->y1+0.5; /* Center of pixel y1 */
Transform_transform(pItxInfo, &x, &y);
if (TX_FIXED_UNSAFE(x) || TX_FIXED_UNSAFE(y)) {
return JNI_TRUE;
}
x = dxoff+pBounds->x1+0.5; /* Center of pixel x1 */
y = dyoff+pBounds->y2-0.5; /* Center of pixel y2-1 */
Transform_transform(pItxInfo, &x, &y);
if (TX_FIXED_UNSAFE(x) || TX_FIXED_UNSAFE(y)) {
return JNI_TRUE;
}
x = dxoff+pBounds->x2-0.5; /* Center of pixel x2-1 */
y = dyoff+pBounds->y2-0.5; /* Center of pixel y2-1 */
Transform_transform(pItxInfo, &x, &y);
if (TX_FIXED_UNSAFE(x) || TX_FIXED_UNSAFE(y)) {
return JNI_TRUE;
}
return JNI_FALSE;
}
static void
Transform_SafeHelper(JNIEnv *env,
SurfaceDataOps *srcOps,
SurfaceDataOps *dstOps,
SurfaceDataRasInfo *pSrcInfo,
SurfaceDataRasInfo *pDstInfo,
NativePrimitive *pMaskBlitPrim,
CompositeInfo *pCompInfo,
TransformHelperFunc *pHelperFunc,
TransformInterpFunc *pInterpFunc,
RegionData *pClipInfo, TransformInfo *pItxInfo,
jint *pData, jint *pEdges,
jint dxoff, jint dyoff, jint sw, jint sh)
{
SurfaceDataBounds span;
jint dx1, dx2;
jint dy1, dy2;
jint i, iy;
dy1 = pDstInfo->bounds.y1;
dy2 = pDstInfo->bounds.y2;
dx1 = pDstInfo->bounds.x1;
dx2 = pDstInfo->bounds.x2;
pEdges[0] = dy1;
pEdges[1] = dy2;
for (iy = dy1; iy < dy2; iy++) {
jint i = (iy - dy1) * 2;
/* row spans are set to max,min until we find a pixel in range below */
pEdges[i + 2] = dx2;
pEdges[i + 3] = dx1;
}
Region_StartIteration(env, pClipInfo);
while (Region_NextIteration(pClipInfo, &span)) {
dy1 = span.y1;
dy2 = span.y2;
while (dy1 < dy2) {
dx1 = span.x1;
dx2 = span.x2;
i = (dy1 - pDstInfo->bounds.y1) * 2;
while (dx1 < dx2) {
jdouble x, y;
jlong xlong, ylong;
x = dxoff + dx1 + 0.5;
y = dyoff + dy1 + 0.5;
Transform_transform(pItxInfo, &x, &y);
xlong = DblToLong(x);
ylong = DblToLong(y);
/* Process only pixels with centers in bounds
* Test double values to avoid overflow in conversion
* to long values and then also test the long values
* in case they rounded up and out of bounds during
* the conversion.
*/
if (x >= 0 && y >= 0 && x < sw && y < sh &&
WholeOfLong(xlong) < sw &&
WholeOfLong(ylong) < sh)
{
void *pDst;
if (pEdges[i + 2] > dx1) {
pEdges[i + 2] = dx1;
}
if (pEdges[i + 3] <= dx1) {
pEdges[i + 3] = dx1 + 1;
}
/* Get IntArgbPre pixel data from source */
(*pHelperFunc)(pSrcInfo,
pData, 1,
xlong, 0,
ylong, 0);
/* Interpolate result pixels if needed */
if (pInterpFunc) {
(*pInterpFunc)(pData, 1,
FractOfLong(xlong-LongOneHalf), 0,
FractOfLong(ylong-LongOneHalf), 0);
}
/* Store/Composite interpolated pixels into dest */
pDst = PtrCoord(pDstInfo->rasBase,
dx1, pDstInfo->pixelStride,
dy1, pDstInfo->scanStride);
(*pMaskBlitPrim->funcs.maskblit)(pDst, pData,
0, 0, 0,
1, 1,
pDstInfo, pSrcInfo,
pMaskBlitPrim,
pCompInfo);
}
/* Increment to next input pixel */
dx1++;
}
/* Increment to next scanline */
dy1++;
}
}
Region_EndIteration(env, pClipInfo);
}
/*
* Class: sun_java2d_loops_TransformHelper
* Method: Transform
* Signature: (Lsun/java2d/loops/MaskBlit;Lsun/java2d/SurfaceData;Lsun/java2d/SurfaceData;Ljava/awt/Composite;Lsun/java2d/pipe/Region;Ljava/awt/geom/AffineTransform;IIIIIIIII[I)V
*/
JNIEXPORT void JNICALL
Java_sun_java2d_loops_TransformHelper_Transform
(JNIEnv *env, jobject self,
jobject maskblit,
jobject srcData, jobject dstData,
jobject comp, jobject clip,
jobject itxform, jint txtype,
jint sx1, jint sy1, jint sx2, jint sy2,
jint dx1, jint dy1, jint dx2, jint dy2,
jintArray edgeArray, jint dxoff, jint dyoff)
{
SurfaceDataOps *srcOps;
SurfaceDataOps *dstOps;
SurfaceDataRasInfo srcInfo;
SurfaceDataRasInfo dstInfo;
NativePrimitive *pHelperPrim;
NativePrimitive *pMaskBlitPrim;
CompositeInfo compInfo;
RegionData clipInfo;
TransformInfo itxInfo;
jint maxlinepix;
TransformHelperFunc *pHelperFunc;
TransformInterpFunc *pInterpFunc;
jint edgebuf[MAXEDGES * 2];
jint *pEdges;
jdouble x, y;
jlong xbase, ybase;
jlong dxdxlong, dydxlong;
jlong dxdylong, dydylong;
#ifdef MAKE_STUBS
static int th_initialized;
/* For debugging only - used to swap in alternate funcs for perf testing */
if (!th_initialized) {
if (getenv("TXSTUB") != 0) {
pBilinearFunc = BilinearInterpStub;
pBicubicFunc = BicubicInterpStub;
} else if (getenv("TXNOVIS") != 0) {
pBilinearFunc = BilinearInterp;
pBicubicFunc = BicubicInterp;
}
th_initialized = 1;
}
#endif /* MAKE_STUBS */
pHelperPrim = GetNativePrim(env, self);
if (pHelperPrim == NULL) {
/* Should never happen... */
return;
}
pMaskBlitPrim = GetNativePrim(env, maskblit);
if (pMaskBlitPrim == NULL) {
/* Exception was thrown by GetNativePrim */
return;
}
if (pMaskBlitPrim->pCompType->getCompInfo != NULL) {
(*pMaskBlitPrim->pCompType->getCompInfo)(env, &compInfo, comp);
}
if (Region_GetInfo(env, clip, &clipInfo)) {
return;
}
srcOps = SurfaceData_GetOps(env, srcData);
dstOps = SurfaceData_GetOps(env, dstData);
if (srcOps == 0 || dstOps == 0) {
return;
}
/*
* Grab the appropriate pointer to the helper and interpolation
* routines and calculate the maximum number of destination pixels
* that can be processed in one intermediate buffer based on the
* size of the buffer and the number of samples needed per pixel.
*/
switch (txtype) {
case java_awt_image_AffineTransformOp_TYPE_NEAREST_NEIGHBOR:
pHelperFunc = pHelperPrim->funcs.transformhelpers->nnHelper;
pInterpFunc = NULL;
maxlinepix = LINE_SIZE;
break;
case java_awt_image_AffineTransformOp_TYPE_BILINEAR:
pHelperFunc = pHelperPrim->funcs.transformhelpers->blHelper;
pInterpFunc = pBilinearFunc;
maxlinepix = LINE_SIZE / 4;
break;
case java_awt_image_AffineTransformOp_TYPE_BICUBIC:
pHelperFunc = pHelperPrim->funcs.transformhelpers->bcHelper;
pInterpFunc = pBicubicFunc;
maxlinepix = LINE_SIZE / 16;
break;
}
srcInfo.bounds.x1 = sx1;
srcInfo.bounds.y1 = sy1;
srcInfo.bounds.x2 = sx2;
srcInfo.bounds.y2 = sy2;
dstInfo.bounds.x1 = dx1;
dstInfo.bounds.y1 = dy1;
dstInfo.bounds.x2 = dx2;
dstInfo.bounds.y2 = dy2;
SurfaceData_IntersectBounds(&dstInfo.bounds, &clipInfo.bounds);
if (srcOps->Lock(env, srcOps, &srcInfo, pHelperPrim->srcflags)
!= SD_SUCCESS)
{
return;
}
if (dstOps->Lock(env, dstOps, &dstInfo, pMaskBlitPrim->dstflags)
!= SD_SUCCESS)
{
SurfaceData_InvokeUnlock(env, srcOps, &srcInfo);
return;
}
Region_IntersectBounds(&clipInfo, &dstInfo.bounds);
Transform_GetInfo(env, itxform, &itxInfo);
dxdxlong = DblToLong(itxInfo.dxdx);
dydxlong = DblToLong(itxInfo.dydx);
dxdylong = DblToLong(itxInfo.dxdy);
dydylong = DblToLong(itxInfo.dydy);
x = dxoff+dstInfo.bounds.x1+0.5; /* Center of pixel x1 */
y = dyoff+dstInfo.bounds.y1+0.5; /* Center of pixel y1 */
Transform_transform(&itxInfo, &x, &y);
xbase = DblToLong(x);
ybase = DblToLong(y);
pEdges = calculateEdges(edgebuf, &dstInfo.bounds, &itxInfo,
xbase, ybase, sx2-sx1, sy2-sy1);
if (!Region_IsEmpty(&clipInfo)) {
srcOps->GetRasInfo(env, srcOps, &srcInfo);
dstOps->GetRasInfo(env, dstOps, &dstInfo);
if (srcInfo.rasBase && dstInfo.rasBase) {
union {
jlong align;
jint data[LINE_SIZE];
} rgb;
SurfaceDataBounds span;
Region_StartIteration(env, &clipInfo);
while (Region_NextIteration(&clipInfo, &span)) {
jlong rowxlong, rowylong;
void *pDst;
dy1 = span.y1;
dy2 = span.y2;
rowxlong = xbase + (dy1 - dstInfo.bounds.y1) * dxdylong;
rowylong = ybase + (dy1 - dstInfo.bounds.y1) * dydylong;
while (dy1 < dy2) {
jlong xlong, ylong;
/* Note - process at most one scanline at a time. */
dx1 = pEdges[(dy1 - dstInfo.bounds.y1) * 2];
dx2 = pEdges[(dy1 - dstInfo.bounds.y1) * 2 + 1];
if (dx1 < span.x1) dx1 = span.x1;
if (dx2 > span.x2) dx2 = span.x2;
/* All pixels from dx1 to dx2 have centers in bounds */
while (dx1 < dx2) {
/* Can process at most one buffer full at a time */
jint numpix = dx2 - dx1;
if (numpix > maxlinepix) {
numpix = maxlinepix;
}
xlong =
rowxlong + ((dx1 - dstInfo.bounds.x1) * dxdxlong);
ylong =
rowylong + ((dx1 - dstInfo.bounds.x1) * dydxlong);
/* Get IntArgbPre pixel data from source */
(*pHelperFunc)(&srcInfo,
rgb.data, numpix,
xlong, dxdxlong,
ylong, dydxlong);
/* Interpolate result pixels if needed */
if (pInterpFunc) {
(*pInterpFunc)(rgb.data, numpix,
FractOfLong(xlong-LongOneHalf),
FractOfLong(dxdxlong),
FractOfLong(ylong-LongOneHalf),
FractOfLong(dydxlong));
}
/* Store/Composite interpolated pixels into dest */
pDst = PtrCoord(dstInfo.rasBase,
dx1, dstInfo.pixelStride,
dy1, dstInfo.scanStride);
(*pMaskBlitPrim->funcs.maskblit)(pDst, rgb.data,
0, 0, 0,
numpix, 1,
&dstInfo, &srcInfo,
pMaskBlitPrim,
&compInfo);
/* Increment to next buffer worth of input pixels */
dx1 += maxlinepix;
}
/* Increment to next scanline */
rowxlong += dxdylong;
rowylong += dydylong;
dy1++;
}
}
Region_EndIteration(env, &clipInfo);
}
SurfaceData_InvokeRelease(env, dstOps, &dstInfo);
SurfaceData_InvokeRelease(env, srcOps, &srcInfo);
}
SurfaceData_InvokeUnlock(env, dstOps, &dstInfo);
SurfaceData_InvokeUnlock(env, srcOps, &srcInfo);
if (!JNU_IsNull(env, edgeArray)) {
(*env)->SetIntArrayRegion(env, edgeArray, 0, 1, &dstInfo.bounds.y1);
(*env)->SetIntArrayRegion(env, edgeArray, 1, 1, &dstInfo.bounds.y2);
(*env)->SetIntArrayRegion(env, edgeArray,
2, (dstInfo.bounds.y2 - dstInfo.bounds.y1)*2,
pEdges);
}
if (pEdges != edgebuf) {
free(pEdges);
}
}
