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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkSingleInputImageFilter.h"
#include "SkBitmap.h"
#include "SkFlattenableBuffers.h"
#include "SkMatrix.h"
#if SK_SUPPORT_GPU
#include "GrTexture.h"
#include "SkGr.h"
#include "SkGrPixelRef.h"
#endif
SkSingleInputImageFilter::SkSingleInputImageFilter(SkImageFilter* input) : fInput(input) {
SkSafeRef(fInput);
}
SkSingleInputImageFilter::~SkSingleInputImageFilter() {
SkSafeUnref(fInput);
}
SkSingleInputImageFilter::SkSingleInputImageFilter(SkFlattenableReadBuffer& rb) {
if (rb.readBool()) {
fInput = rb.readFlattenableT<SkImageFilter>();
} else {
fInput = NULL;
}
}
void SkSingleInputImageFilter::flatten(SkFlattenableWriteBuffer& wb) const {
wb.writeBool(NULL != fInput);
if (NULL != fInput) {
wb.writeFlattenable(fInput);
}
}
SkBitmap SkSingleInputImageFilter::getInputResult(Proxy* proxy,
const SkBitmap& src,
const SkMatrix& ctm,
SkIPoint* offset) {
SkBitmap result;
if (fInput && fInput->filterImage(proxy, src, ctm, &result, offset)) {
return result;
} else {
return src;
}
}
#if SK_SUPPORT_GPU
GrTexture* SkSingleInputImageFilter::getInputResultAsTexture(GrTexture* src,
const SkRect& rect) {
GrTexture* resultTex;
if (!fInput) {
resultTex = src;
} else if (fInput->canFilterImageGPU()) {
// onFilterImageGPU() already refs the result, so just return it here.
return fInput->onFilterImageGPU(src, rect);
} else {
SkBitmap srcBitmap, result;
srcBitmap.setConfig(SkBitmap::kARGB_8888_Config, src->width(), src->height());
srcBitmap.setPixelRef(new SkGrPixelRef(src))->unref();
SkIPoint offset;
if (fInput->filterImage(NULL, srcBitmap, SkMatrix(), &result, &offset)) {
if (result.getTexture()) {
resultTex = (GrTexture*) result.getTexture();
} else {
resultTex = GrLockCachedBitmapTexture(src->getContext(), result, NULL);
SkSafeRef(resultTex);
GrUnlockCachedBitmapTexture(resultTex);
return resultTex;
}
} else {
resultTex = src;
}
}
SkSafeRef(resultTex);
return resultTex;
}
#endif
SK_DEFINE_FLATTENABLE_REGISTRAR(SkSingleInputImageFilter)
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