bool SkBlurImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) {
SkBitmap src = this->getInputResult(proxy, source, ctm, offset);
if (src.config() != SkBitmap::kARGB_8888_Config) {
return false;
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
dst->setConfig(src.config(), src.width(), src.height());
dst->allocPixels();
int kernelSizeX, kernelSizeX3, lowOffsetX, highOffsetX;
int kernelSizeY, kernelSizeY3, lowOffsetY, highOffsetY;
getBox3Params(fSigma.width(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
getBox3Params(fSigma.height(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
if (kernelSizeX < 0 || kernelSizeY < 0) {
return false;
}
if (kernelSizeX == 0 && kernelSizeY == 0) {
src.copyTo(dst, dst->config());
return true;
}
SkBitmap temp;
temp.setConfig(dst->config(), dst->width(), dst->height());
if (!temp.allocPixels()) {
return false;
}
if (kernelSizeX > 0 && kernelSizeY > 0) {
boxBlurX(src, &temp, kernelSizeX, lowOffsetX, highOffsetX);
boxBlurY(temp, dst, kernelSizeY, lowOffsetY, highOffsetY);
boxBlurX(*dst, &temp, kernelSizeX, highOffsetX, lowOffsetX);
boxBlurY(temp, dst, kernelSizeY, highOffsetY, lowOffsetY);
boxBlurX(*dst, &temp, kernelSizeX3, highOffsetX, highOffsetX);
boxBlurY(temp, dst, kernelSizeY3, highOffsetY, highOffsetY);
} else if (kernelSizeX > 0) {
boxBlurX(src, dst, kernelSizeX, lowOffsetX, highOffsetX);
boxBlurX(*dst, &temp, kernelSizeX, highOffsetX, lowOffsetX);
boxBlurX(temp, dst, kernelSizeX3, highOffsetX, highOffsetX);
} else if (kernelSizeY > 0) {
boxBlurY(src, dst, kernelSizeY, lowOffsetY, highOffsetY);
boxBlurY(*dst, &temp, kernelSizeY, highOffsetY, lowOffsetY);
boxBlurY(temp, dst, kernelSizeY3, highOffsetY, highOffsetY);
}
return true;
}
bool SkBlurImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source, const Context& ctx,
SkBitmap* dst, SkIPoint* offset) const {
SkBitmap src = source;
SkIPoint srcOffset = SkIPoint::Make(0, 0);
if (getInput(0) && !getInput(0)->filterImage(proxy, source, ctx, &src, &srcOffset)) {
return false;
}
if (src.colorType() != kN32_SkColorType) {
return false;
}
SkIRect srcBounds, dstBounds;
if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &srcBounds, &src)) {
return false;
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
if (!dst->allocPixels(src.info().makeWH(srcBounds.width(), srcBounds.height()))) {
return false;
}
dst->getBounds(&dstBounds);
SkVector sigma = SkVector::Make(fSigma.width(), fSigma.height());
ctx.ctm().mapVectors(&sigma, 1);
sigma.fX = SkMinScalar(sigma.fX, MAX_SIGMA);
sigma.fY = SkMinScalar(sigma.fY, MAX_SIGMA);
int kernelSizeX, kernelSizeX3, lowOffsetX, highOffsetX;
int kernelSizeY, kernelSizeY3, lowOffsetY, highOffsetY;
getBox3Params(sigma.x(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
getBox3Params(sigma.y(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
if (kernelSizeX < 0 || kernelSizeY < 0) {
return false;
}
if (kernelSizeX == 0 && kernelSizeY == 0) {
src.copyTo(dst, dst->colorType());
offset->fX = srcBounds.fLeft;
offset->fY = srcBounds.fTop;
return true;
}
SkBitmap temp;
if (!temp.allocPixels(dst->info())) {
return false;
}
offset->fX = srcBounds.fLeft;
offset->fY = srcBounds.fTop;
srcBounds.offset(-srcOffset);
const SkPMColor* s = src.getAddr32(srcBounds.left(), srcBounds.top());
SkPMColor* t = temp.getAddr32(0, 0);
SkPMColor* d = dst->getAddr32(0, 0);
int w = dstBounds.width(), h = dstBounds.height();
int sw = src.rowBytesAsPixels();
SkBoxBlurProc boxBlurX, boxBlurY, boxBlurXY, boxBlurYX;
if (!SkBoxBlurGetPlatformProcs(&boxBlurX, &boxBlurY, &boxBlurXY, &boxBlurYX)) {
boxBlurX = boxBlur<kX, kX>;
boxBlurY = boxBlur<kY, kY>;
boxBlurXY = boxBlur<kX, kY>;
boxBlurYX = boxBlur<kY, kX>;
}
if (kernelSizeX > 0 && kernelSizeY > 0) {
boxBlurX(s, sw, t, kernelSizeX, lowOffsetX, highOffsetX, w, h);
boxBlurX(t, w, d, kernelSizeX, highOffsetX, lowOffsetX, w, h);
boxBlurXY(d, w, t, kernelSizeX3, highOffsetX, highOffsetX, w, h);
boxBlurX(t, h, d, kernelSizeY, lowOffsetY, highOffsetY, h, w);
boxBlurX(d, h, t, kernelSizeY, highOffsetY, lowOffsetY, h, w);
boxBlurXY(t, h, d, kernelSizeY3, highOffsetY, highOffsetY, h, w);
} else if (kernelSizeX > 0) {
boxBlurX(s, sw, d, kernelSizeX, lowOffsetX, highOffsetX, w, h);
boxBlurX(d, w, t, kernelSizeX, highOffsetX, lowOffsetX, w, h);
boxBlurX(t, w, d, kernelSizeX3, highOffsetX, highOffsetX, w, h);
} else if (kernelSizeY > 0) {
boxBlurYX(s, sw, d, kernelSizeY, lowOffsetY, highOffsetY, h, w);
boxBlurX(d, h, t, kernelSizeY, highOffsetY, lowOffsetY, h, w);
boxBlurXY(t, h, d, kernelSizeY3, highOffsetY, highOffsetY, h, w);
}
return true;
}
bool SkBlurImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) {
SkBitmap src = source;
if (getInput(0) && !getInput(0)->filterImage(proxy, source, ctm, &src, offset)) {
return false;
}
if (src.config() != SkBitmap::kARGB_8888_Config) {
return false;
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
SkIRect srcBounds, dstBounds;
src.getBounds(&srcBounds);
if (!this->applyCropRect(&srcBounds, ctm)) {
return false;
}
dst->setConfig(src.config(), srcBounds.width(), srcBounds.height());
dst->getBounds(&dstBounds);
dst->allocPixels();
int kernelSizeX, kernelSizeX3, lowOffsetX, highOffsetX;
int kernelSizeY, kernelSizeY3, lowOffsetY, highOffsetY;
getBox3Params(fSigma.width(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
getBox3Params(fSigma.height(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
if (kernelSizeX < 0 || kernelSizeY < 0) {
return false;
}
if (kernelSizeX == 0 && kernelSizeY == 0) {
src.copyTo(dst, dst->config());
return true;
}
SkBitmap temp;
temp.setConfig(dst->config(), dst->width(), dst->height());
if (!temp.allocPixels()) {
return false;
}
if (kernelSizeX > 0 && kernelSizeY > 0) {
boxBlurX(src, &temp, kernelSizeX, lowOffsetX, highOffsetX, srcBounds);
boxBlurY(temp, dst, kernelSizeY, lowOffsetY, highOffsetY, dstBounds);
boxBlurX(*dst, &temp, kernelSizeX, highOffsetX, lowOffsetX, dstBounds);
boxBlurY(temp, dst, kernelSizeY, highOffsetY, lowOffsetY, dstBounds);
boxBlurX(*dst, &temp, kernelSizeX3, highOffsetX, highOffsetX, dstBounds);
boxBlurY(temp, dst, kernelSizeY3, highOffsetY, highOffsetY, dstBounds);
} else if (kernelSizeX > 0) {
boxBlurX(src, dst, kernelSizeX, lowOffsetX, highOffsetX, srcBounds);
boxBlurX(*dst, &temp, kernelSizeX, highOffsetX, lowOffsetX, dstBounds);
boxBlurX(temp, dst, kernelSizeX3, highOffsetX, highOffsetX, dstBounds);
} else if (kernelSizeY > 0) {
boxBlurY(src, dst, kernelSizeY, lowOffsetY, highOffsetY, srcBounds);
boxBlurY(*dst, &temp, kernelSizeY, highOffsetY, lowOffsetY, dstBounds);
boxBlurY(temp, dst, kernelSizeY3, highOffsetY, highOffsetY, dstBounds);
}
offset->fX += srcBounds.fLeft;
offset->fY += srcBounds.fTop;
return true;
}
