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android13/frameworks/rs/toolkit/Blend.cpp

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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <cstdint>
#include "RenderScriptToolkit.h"
#include "TaskProcessor.h"
#include "Utils.h"
namespace android {
namespace renderscript {
#define LOG_TAG "renderscript.toolkit.Blend"
/**
* Blends a source into a destination, based on the mode.
*/
class BlendTask : public Task {
// The type of blending to do.
RenderScriptToolkit::BlendingMode mMode;
// The input we're blending.
const uchar4* mIn;
// The destination, used both for input and output.
uchar4* mOut;
void blend(RenderScriptToolkit::BlendingMode mode, const uchar4* in, uchar4* out,
uint32_t length);
// Process a 2D tile of the overall work. threadIndex identifies which thread does the work.
virtual void processData(int threadIndex, size_t startX, size_t startY, size_t endX,
size_t endY) override;
public:
BlendTask(RenderScriptToolkit::BlendingMode mode, const uint8_t* in, uint8_t* out, size_t sizeX,
size_t sizeY, const Restriction* restriction)
: Task{sizeX, sizeY, 4, true, restriction},
mMode{mode},
mIn{reinterpret_cast<const uchar4*>(in)},
mOut{reinterpret_cast<uchar4*>(out)} {}
};
#if defined(ARCH_ARM_USE_INTRINSICS)
extern "C" int rsdIntrinsicBlend_K(uchar4 *out, uchar4 const *in, int slot,
uint32_t xstart, uint32_t xend);
#endif
#if defined(ARCH_X86_HAVE_SSSE3)
extern void rsdIntrinsicBlendSrcOver_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendDstOver_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendSrcIn_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendDstIn_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendSrcOut_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendDstOut_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendSrcAtop_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendDstAtop_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendXor_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendMultiply_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendAdd_K(void *dst, const void *src, uint32_t count8);
extern void rsdIntrinsicBlendSub_K(void *dst, const void *src, uint32_t count8);
#endif
// Convert vector to uchar4, clipping each value to 255.
template <typename TI>
static inline uchar4 convertClipped(TI amount) {
return uchar4 { static_cast<uchar>(amount.x > 255 ? 255 : amount.x),
static_cast<uchar>(amount.y > 255 ? 255 : amount.y),
static_cast<uchar>(amount.z > 255 ? 255 : amount.z),
static_cast<uchar>(amount.w > 255 ? 255 : amount.w)};
}
void BlendTask::blend(RenderScriptToolkit::BlendingMode mode, const uchar4* in, uchar4* out,
uint32_t length) {
uint32_t x1 = 0;
uint32_t x2 = length;
#if defined(ARCH_ARM_USE_INTRINSICS)
if (mUsesSimd) {
if (rsdIntrinsicBlend_K(out, in, (int) mode, x1, x2) >= 0) {
return;
} else {
ALOGW("Intrinsic Blend failed to use SIMD for %d", mode);
}
}
#endif
switch (mode) {
case RenderScriptToolkit::BlendingMode::CLEAR:
for (;x1 < x2; x1++, out++) {
*out = 0;
}
break;
case RenderScriptToolkit::BlendingMode::SRC:
for (;x1 < x2; x1++, out++, in++) {
*out = *in;
}
break;
//RenderScriptToolkit::BlendingMode::DST is a NOP
case RenderScriptToolkit::BlendingMode::DST:
break;
case RenderScriptToolkit::BlendingMode::SRC_OVER:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendSrcOver_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 in_s = convert<ushort4>(*in);
ushort4 out_s = convert<ushort4>(*out);
in_s = in_s + ((out_s * (ushort4)(255 - in_s.w)) >> (ushort4)8);
*out = convertClipped(in_s);
}
break;
case RenderScriptToolkit::BlendingMode::DST_OVER:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendDstOver_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 in_s = convert<ushort4>(*in);
ushort4 out_s = convert<ushort4>(*out);
in_s = out_s + ((in_s * (ushort4)(255 - out_s.w)) >> (ushort4)8);
*out = convertClipped(in_s);
}
break;
case RenderScriptToolkit::BlendingMode::SRC_IN:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendSrcIn_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 in_s = convert<ushort4>(*in);
in_s = (in_s * out->w) >> (ushort4)8;
*out = convert<uchar4>(in_s);
}
break;
case RenderScriptToolkit::BlendingMode::DST_IN:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendDstIn_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 out_s = convert<ushort4>(*out);
out_s = (out_s * in->w) >> (ushort4)8;
*out = convert<uchar4>(out_s);
}
break;
case RenderScriptToolkit::BlendingMode::SRC_OUT:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendSrcOut_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 in_s = convert<ushort4>(*in);
in_s = (in_s * (ushort4)(255 - out->w)) >> (ushort4)8;
*out = convert<uchar4>(in_s);
}
break;
case RenderScriptToolkit::BlendingMode::DST_OUT:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendDstOut_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
ushort4 out_s = convert<ushort4>(*out);
out_s = (out_s * (ushort4)(255 - in->w)) >> (ushort4)8;
*out = convert<uchar4>(out_s);
}
break;
case RenderScriptToolkit::BlendingMode::SRC_ATOP:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendSrcAtop_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
// The max value the operation could produce before the shift
// is 255 * 255 + 255 * (255 - 0) = 130050, or 0x1FC02.
// That value does not fit in a ushort, so we use uint.
uint4 in_s = convert<uint4>(*in);
uint4 out_s = convert<uint4>(*out);
out_s.xyz = ((in_s.xyz * out_s.w) +
(out_s.xyz * ((uint3)255 - (uint3)in_s.w))) >> (uint3)8;
*out = convertClipped(out_s);
}
break;
case RenderScriptToolkit::BlendingMode::DST_ATOP:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendDstAtop_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
uint4 in_s = convert<uint4>(*in);
uint4 out_s = convert<uint4>(*out);
out_s.xyz = ((out_s.xyz * in_s.w) +
(in_s.xyz * ((uint3)255 - (uint3)out_s.w))) >> (uint3)8;
out_s.w = in_s.w;
*out = convertClipped(out_s);
}
break;
case RenderScriptToolkit::BlendingMode::XOR:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendXor_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
*out = *in ^ *out;
}
break;
case RenderScriptToolkit::BlendingMode::MULTIPLY:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if ((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendMultiply_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
*out = convert<uchar4>((convert<ushort4>(*in) * convert<ushort4>(*out))
>> (ushort4)8);
}
break;
case RenderScriptToolkit::BlendingMode::ADD:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendAdd_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
uint32_t iR = in->x, iG = in->y, iB = in->z, iA = in->w,
oR = out->x, oG = out->y, oB = out->z, oA = out->w;
out->x = (oR + iR) > 255 ? 255 : oR + iR;
out->y = (oG + iG) > 255 ? 255 : oG + iG;
out->z = (oB + iB) > 255 ? 255 : oB + iB;
out->w = (oA + iA) > 255 ? 255 : oA + iA;
}
break;
case RenderScriptToolkit::BlendingMode::SUBTRACT:
#if defined(ARCH_X86_HAVE_SSSE3)
if (mUsesSimd) {
if((x1 + 8) < x2) {
uint32_t len = (x2 - x1) >> 3;
rsdIntrinsicBlendSub_K(out, in, len);
x1 += len << 3;
out += len << 3;
in += len << 3;
}
}
#endif
for (;x1 < x2; x1++, out++, in++) {
int32_t iR = in->x, iG = in->y, iB = in->z, iA = in->w,
oR = out->x, oG = out->y, oB = out->z, oA = out->w;
out->x = (oR - iR) < 0 ? 0 : oR - iR;
out->y = (oG - iG) < 0 ? 0 : oG - iG;
out->z = (oB - iB) < 0 ? 0 : oB - iB;
out->w = (oA - iA) < 0 ? 0 : oA - iA;
}
break;
default:
ALOGE("Called unimplemented value %d", mode);
assert(false);
}
}
void BlendTask::processData(int /* threadIndex */, size_t startX, size_t startY, size_t endX,
size_t endY) {
for (size_t y = startY; y < endY; y++) {
size_t offset = y * mSizeX + startX;
blend(mMode, mIn + offset, mOut + offset, endX - startX);
}
}
void RenderScriptToolkit::blend(BlendingMode mode, const uint8_t* in, uint8_t* out, size_t sizeX,
size_t sizeY, const Restriction* restriction) {
#ifdef ANDROID_RENDERSCRIPT_TOOLKIT_VALIDATE
if (!validRestriction(LOG_TAG, sizeX, sizeY, restriction)) {
return;
}
#endif
BlendTask task(mode, in, out, sizeX, sizeY, restriction);
processor->doTask(&task);
}
} // namespace renderscript
} // namespace android
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