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494 lines
16 KiB
494 lines
16 KiB
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rsCpuIntrinsic.h"
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#include "rsCpuIntrinsicInlines.h"
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namespace android {
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namespace renderscript {
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class RsdCpuScriptIntrinsicBlur : public RsdCpuScriptIntrinsic {
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public:
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void populateScript(Script *) override;
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void invokeFreeChildren() override;
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void setGlobalVar(uint32_t slot, const void *data, size_t dataLength) override;
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void setGlobalObj(uint32_t slot, ObjectBase *data) override;
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~RsdCpuScriptIntrinsicBlur() override;
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RsdCpuScriptIntrinsicBlur(RsdCpuReferenceImpl *ctx, const Script *s, const Element *e);
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protected:
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// The size of the kernel radius is limited to 25 in ScriptIntrinsicBlur.java.
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// So, the max kernel size is 51 (= 2 * 25 + 1).
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// Considering SSSE3 case, which requires the size is multiple of 4,
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// at least 52 words are necessary. Values outside of the kernel should be 0.
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float mFp[104];
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uint16_t mIp[104];
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void **mScratch;
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size_t *mScratchSize;
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float mRadius;
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int mIradius;
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ObjectBaseRef<Allocation> mAlloc;
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static void kernelU4(const RsExpandKernelDriverInfo *info,
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uint32_t xstart, uint32_t xend,
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uint32_t outstep);
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static void kernelU1(const RsExpandKernelDriverInfo *info,
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uint32_t xstart, uint32_t xend,
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uint32_t outstep);
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void ComputeGaussianWeights();
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};
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void RsdCpuScriptIntrinsicBlur::ComputeGaussianWeights() {
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memset(mFp, 0, sizeof(mFp));
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memset(mIp, 0, sizeof(mIp));
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// Compute gaussian weights for the blur
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// e is the euler's number
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// TODO Define these constants only once
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float e = 2.718281828459045f;
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float pi = 3.1415926535897932f;
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// g(x) = (1 / (sqrt(2 * pi) * sigma)) * e ^ (-x^2 / (2 * sigma^2))
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// x is of the form [-radius .. 0 .. radius]
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// and sigma varies with the radius.
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// Based on some experimental radius values and sigmas,
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// we approximately fit sigma = f(radius) as
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// sigma = radius * 0.4 + 0.6
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// The larger the radius gets, the more our gaussian blur
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// will resemble a box blur since with large sigma
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// the gaussian curve begins to lose its shape
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float sigma = 0.4f * mRadius + 0.6f;
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// Now compute the coefficients. We will store some redundant values to save
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// some math during the blur calculations precompute some values
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float coeff1 = 1.0f / (sqrtf(2.0f * pi) * sigma);
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float coeff2 = - 1.0f / (2.0f * sigma * sigma);
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float normalizeFactor = 0.0f;
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float floatR = 0.0f;
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int r;
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mIradius = (float)ceil(mRadius) + 0.5f;
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for (r = -mIradius; r <= mIradius; r ++) {
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floatR = (float)r;
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mFp[r + mIradius] = coeff1 * powf(e, floatR * floatR * coeff2);
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normalizeFactor += mFp[r + mIradius];
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}
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// Now we need to normalize the weights because all our coefficients need to add up to one
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normalizeFactor = 1.0f / normalizeFactor;
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for (r = -mIradius; r <= mIradius; r ++) {
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mFp[r + mIradius] *= normalizeFactor;
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mIp[r + mIradius] = (uint16_t)(mFp[r + mIradius] * 65536.0f + 0.5f);
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}
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}
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void RsdCpuScriptIntrinsicBlur::setGlobalObj(uint32_t slot, ObjectBase *data) {
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rsAssert(slot == 1);
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mAlloc.set(static_cast<Allocation *>(data));
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}
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void RsdCpuScriptIntrinsicBlur::setGlobalVar(uint32_t slot, const void *data, size_t dataLength) {
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rsAssert(slot == 0);
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mRadius = ((const float *)data)[0];
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ComputeGaussianWeights();
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}
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static void OneVU4(const RsExpandKernelDriverInfo *info, float4 *out, int32_t x, int32_t y,
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const uchar *ptrIn, int iStride, const float* gPtr, int iradius) {
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const uchar *pi = ptrIn + x*4;
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float4 blurredPixel = 0;
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for (int r = -iradius; r <= iradius; r ++) {
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int validY = rsMax((y + r), 0);
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validY = rsMin(validY, (int)(info->dim.y- 1));
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const uchar4 *pvy = (const uchar4 *)&pi[validY * iStride];
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float4 pf = convert_float4(pvy[0]);
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blurredPixel += pf * gPtr[0];
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gPtr++;
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}
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out[0] = blurredPixel;
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}
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static void OneVU1(const RsExpandKernelDriverInfo *info, float *out, int32_t x, int32_t y,
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const uchar *ptrIn, int iStride, const float* gPtr, int iradius) {
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const uchar *pi = ptrIn + x;
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float blurredPixel = 0;
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for (int r = -iradius; r <= iradius; r ++) {
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int validY = rsMax((y + r), 0);
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validY = rsMin(validY, (int)(info->dim.y - 1));
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float pf = (float)pi[validY * iStride];
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blurredPixel += pf * gPtr[0];
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gPtr++;
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}
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out[0] = blurredPixel;
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}
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} // namespace renderscript
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} // namespace android
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extern "C" void rsdIntrinsicBlurU1_K(uchar *out, uchar const *in, size_t w, size_t h,
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size_t p, size_t x, size_t y, size_t count, size_t r, uint16_t const *tab);
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extern "C" void rsdIntrinsicBlurU4_K(uchar4 *out, uchar4 const *in, size_t w, size_t h,
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size_t p, size_t x, size_t y, size_t count, size_t r, uint16_t const *tab);
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#if defined(ARCH_X86_HAVE_SSSE3)
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extern void rsdIntrinsicBlurVFU4_K(void *dst, const void *pin, int stride, const void *gptr, int rct, int x1, int ct);
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extern void rsdIntrinsicBlurHFU4_K(void *dst, const void *pin, const void *gptr, int rct, int x1, int ct);
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extern void rsdIntrinsicBlurHFU1_K(void *dst, const void *pin, const void *gptr, int rct, int x1, int ct);
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#endif
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using android::renderscript::gArchUseSIMD;
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static void OneVFU4(float4 *out,
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const uchar *ptrIn, int iStride, const float* gPtr, int ct,
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int x1, int x2) {
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out += x1;
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#if defined(ARCH_X86_HAVE_SSSE3)
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if (gArchUseSIMD) {
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int t = (x2 - x1);
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t &= ~1;
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if (t) {
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rsdIntrinsicBlurVFU4_K(out, ptrIn, iStride, gPtr, ct, x1, x1 + t);
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}
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x1 += t;
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out += t;
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ptrIn += t << 2;
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}
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#endif
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while(x2 > x1) {
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const uchar *pi = ptrIn;
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float4 blurredPixel = 0;
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const float* gp = gPtr;
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for (int r = 0; r < ct; r++) {
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float4 pf = convert_float4(((const uchar4 *)pi)[0]);
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blurredPixel += pf * gp[0];
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pi += iStride;
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gp++;
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}
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out->xyzw = blurredPixel;
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x1++;
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out++;
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ptrIn+=4;
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}
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}
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static void OneVFU1(float *out,
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const uchar *ptrIn, int iStride, const float* gPtr, int ct, int x1, int x2) {
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int len = x2 - x1;
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out += x1;
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while((x2 > x1) && (((uintptr_t)ptrIn) & 0x3)) {
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const uchar *pi = ptrIn;
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float blurredPixel = 0;
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const float* gp = gPtr;
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for (int r = 0; r < ct; r++) {
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float pf = (float)pi[0];
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blurredPixel += pf * gp[0];
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pi += iStride;
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gp++;
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}
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out[0] = blurredPixel;
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x1++;
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out++;
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ptrIn++;
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len--;
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}
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#if defined(ARCH_X86_HAVE_SSSE3)
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if (gArchUseSIMD && (x2 > x1)) {
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int t = (x2 - x1) >> 2;
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t &= ~1;
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if (t) {
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rsdIntrinsicBlurVFU4_K(out, ptrIn, iStride, gPtr, ct, 0, t );
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len -= t << 2;
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ptrIn += t << 2;
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out += t << 2;
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}
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}
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#endif
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while(len > 0) {
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const uchar *pi = ptrIn;
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float blurredPixel = 0;
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const float* gp = gPtr;
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for (int r = 0; r < ct; r++) {
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float pf = (float)pi[0];
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blurredPixel += pf * gp[0];
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pi += iStride;
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gp++;
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}
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out[0] = blurredPixel;
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len--;
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out++;
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ptrIn++;
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}
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}
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using android::renderscript::rsMin;
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using android::renderscript::rsMax;
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static void OneHU4(const RsExpandKernelDriverInfo *info, uchar4 *out, int32_t x,
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const float4 *ptrIn, const float* gPtr, int iradius) {
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float4 blurredPixel = 0;
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for (int r = -iradius; r <= iradius; r ++) {
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int validX = rsMax((x + r), 0);
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validX = rsMin(validX, (int)(info->dim.x - 1));
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float4 pf = ptrIn[validX];
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blurredPixel += pf * gPtr[0];
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gPtr++;
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}
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out->xyzw = convert_uchar4(blurredPixel);
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}
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static void OneHU1(const RsExpandKernelDriverInfo *info, uchar *out, int32_t x,
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const float *ptrIn, const float* gPtr, int iradius) {
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float blurredPixel = 0;
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for (int r = -iradius; r <= iradius; r ++) {
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int validX = rsMax((x + r), 0);
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validX = rsMin(validX, (int)(info->dim.x - 1));
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float pf = ptrIn[validX];
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blurredPixel += pf * gPtr[0];
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gPtr++;
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}
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out[0] = (uchar)blurredPixel;
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}
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namespace android {
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namespace renderscript {
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void RsdCpuScriptIntrinsicBlur::kernelU4(const RsExpandKernelDriverInfo *info,
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uint32_t xstart, uint32_t xend,
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uint32_t outstep) {
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float4 stackbuf[2048];
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float4 *buf = &stackbuf[0];
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RsdCpuScriptIntrinsicBlur *cp = (RsdCpuScriptIntrinsicBlur *)info->usr;
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if (!cp->mAlloc.get()) {
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ALOGE("Blur executed without input, skipping");
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return;
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}
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const uchar *pin = (const uchar *)cp->mAlloc->mHal.drvState.lod[0].mallocPtr;
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const size_t stride = cp->mAlloc->mHal.drvState.lod[0].stride;
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uchar4 *out = (uchar4 *)info->outPtr[0];
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uint32_t x1 = xstart;
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uint32_t x2 = xend;
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#if defined(ARCH_ARM_USE_INTRINSICS)
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if (gArchUseSIMD && info->dim.x >= 4) {
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rsdIntrinsicBlurU4_K(out, (uchar4 const *)(pin + stride * info->current.y),
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info->dim.x, info->dim.y,
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stride, x1, info->current.y, x2 - x1, cp->mIradius, cp->mIp + cp->mIradius);
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return;
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}
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#endif
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if (info->dim.x > 2048) {
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if ((info->dim.x > cp->mScratchSize[info->lid]) || !cp->mScratch[info->lid]) {
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// Pad the side of the allocation by one unit to allow alignment later
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cp->mScratch[info->lid] = realloc(cp->mScratch[info->lid], (info->dim.x + 1) * 16);
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cp->mScratchSize[info->lid] = info->dim.x;
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}
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// realloc only aligns to 8 bytes so we manually align to 16.
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buf = (float4 *) ((((intptr_t)cp->mScratch[info->lid]) + 15) & ~0xf);
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}
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float4 *fout = (float4 *)buf;
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int y = info->current.y;
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if ((y > cp->mIradius) && (y < ((int)info->dim.y - cp->mIradius))) {
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const uchar *pi = pin + (y - cp->mIradius) * stride;
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OneVFU4(fout, pi, stride, cp->mFp, cp->mIradius * 2 + 1, 0, info->dim.x);
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} else {
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x1 = 0;
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while(info->dim.x > x1) {
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OneVU4(info, fout, x1, y, pin, stride, cp->mFp, cp->mIradius);
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fout++;
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x1++;
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}
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}
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x1 = xstart;
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while ((x1 < (uint32_t)cp->mIradius) && (x1 < x2)) {
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OneHU4(info, out, x1, buf, cp->mFp, cp->mIradius);
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out++;
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x1++;
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}
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#if defined(ARCH_X86_HAVE_SSSE3)
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if (gArchUseSIMD) {
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if ((x1 + cp->mIradius) < x2) {
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rsdIntrinsicBlurHFU4_K(out, buf - cp->mIradius, cp->mFp,
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cp->mIradius * 2 + 1, x1, x2 - cp->mIradius);
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out += (x2 - cp->mIradius) - x1;
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x1 = x2 - cp->mIradius;
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}
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}
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#endif
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while(x2 > x1) {
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OneHU4(info, out, x1, buf, cp->mFp, cp->mIradius);
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out++;
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x1++;
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}
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}
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void RsdCpuScriptIntrinsicBlur::kernelU1(const RsExpandKernelDriverInfo *info,
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uint32_t xstart, uint32_t xend,
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uint32_t outstep) {
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float buf[4 * 2048];
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RsdCpuScriptIntrinsicBlur *cp = (RsdCpuScriptIntrinsicBlur *)info->usr;
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if (!cp->mAlloc.get()) {
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ALOGE("Blur executed without input, skipping");
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return;
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}
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const uchar *pin = (const uchar *)cp->mAlloc->mHal.drvState.lod[0].mallocPtr;
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const size_t stride = cp->mAlloc->mHal.drvState.lod[0].stride;
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uchar *out = (uchar *)info->outPtr[0];
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uint32_t x1 = xstart;
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uint32_t x2 = xend;
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#if defined(ARCH_ARM_USE_INTRINSICS)
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if (gArchUseSIMD && info->dim.x >= 16) {
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// The specialisation for r<=8 has an awkward prefill case, which is
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// fiddly to resolve, where starting close to the right edge can cause
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// a read beyond the end of input. So avoid that case here.
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if (cp->mIradius > 8 || (info->dim.x - rsMax(0, (int32_t)x1 - 8)) >= 16) {
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rsdIntrinsicBlurU1_K(out, pin + stride * info->current.y, info->dim.x, info->dim.y,
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stride, x1, info->current.y, x2 - x1, cp->mIradius, cp->mIp + cp->mIradius);
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return;
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}
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}
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#endif
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float *fout = (float *)buf;
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int y = info->current.y;
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if ((y > cp->mIradius) && (y < ((int)info->dim.y - cp->mIradius -1))) {
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const uchar *pi = pin + (y - cp->mIradius) * stride;
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OneVFU1(fout, pi, stride, cp->mFp, cp->mIradius * 2 + 1, 0, info->dim.x);
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} else {
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x1 = 0;
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while(info->dim.x > x1) {
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OneVU1(info, fout, x1, y, pin, stride, cp->mFp, cp->mIradius);
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fout++;
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x1++;
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}
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}
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x1 = xstart;
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while ((x1 < x2) &&
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((x1 < (uint32_t)cp->mIradius) || (((uintptr_t)out) & 0x3))) {
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OneHU1(info, out, x1, buf, cp->mFp, cp->mIradius);
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out++;
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x1++;
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}
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#if defined(ARCH_X86_HAVE_SSSE3)
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if (gArchUseSIMD) {
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if ((x1 + cp->mIradius) < x2) {
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uint32_t len = x2 - (x1 + cp->mIradius);
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len &= ~3;
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// rsdIntrinsicBlurHFU1_K() processes each four float values in |buf| at once, so it
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// nees to ensure four more values can be accessed in order to avoid accessing
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// uninitialized buffer.
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if (len > 4) {
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len -= 4;
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rsdIntrinsicBlurHFU1_K(out, ((float *)buf) - cp->mIradius, cp->mFp,
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cp->mIradius * 2 + 1, x1, x1 + len);
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out += len;
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x1 += len;
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}
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}
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}
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#endif
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while(x2 > x1) {
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OneHU1(info, out, x1, buf, cp->mFp, cp->mIradius);
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out++;
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x1++;
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}
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}
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RsdCpuScriptIntrinsicBlur::RsdCpuScriptIntrinsicBlur(RsdCpuReferenceImpl *ctx,
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const Script *s, const Element *e)
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: RsdCpuScriptIntrinsic(ctx, s, e, RS_SCRIPT_INTRINSIC_ID_BLUR) {
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mRootPtr = nullptr;
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if (e->getType() == RS_TYPE_UNSIGNED_8) {
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switch (e->getVectorSize()) {
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case 1:
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mRootPtr = &kernelU1;
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break;
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case 4:
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mRootPtr = &kernelU4;
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break;
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}
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}
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rsAssert(mRootPtr);
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mRadius = 5;
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mScratch = new void *[mCtx->getThreadCount()];
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mScratchSize = new size_t[mCtx->getThreadCount()];
|
|
memset(mScratch, 0, sizeof(void *) * mCtx->getThreadCount());
|
|
memset(mScratchSize, 0, sizeof(size_t) * mCtx->getThreadCount());
|
|
|
|
ComputeGaussianWeights();
|
|
}
|
|
|
|
RsdCpuScriptIntrinsicBlur::~RsdCpuScriptIntrinsicBlur() {
|
|
uint32_t threads = mCtx->getThreadCount();
|
|
if (mScratch) {
|
|
for (size_t i = 0; i < threads; i++) {
|
|
if (mScratch[i]) {
|
|
free(mScratch[i]);
|
|
}
|
|
}
|
|
delete []mScratch;
|
|
}
|
|
if (mScratchSize) {
|
|
delete []mScratchSize;
|
|
}
|
|
}
|
|
|
|
void RsdCpuScriptIntrinsicBlur::populateScript(Script *s) {
|
|
s->mHal.info.exportedVariableCount = 2;
|
|
}
|
|
|
|
void RsdCpuScriptIntrinsicBlur::invokeFreeChildren() {
|
|
mAlloc.clear();
|
|
}
|
|
|
|
RsdCpuScriptImpl * rsdIntrinsic_Blur(RsdCpuReferenceImpl *ctx, const Script *s, const Element *e) {
|
|
|
|
return new RsdCpuScriptIntrinsicBlur(ctx, s, e);
|
|
}
|
|
|
|
} // namespace renderscript
|
|
} // namespace android
|