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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "vector_vbitmap.h"
#include <string>
#include <memory>
#include "vector_vdrawhelper.h"
#include "vector_vglobal.h"
V_BEGIN_NAMESPACE
void VBitmap::Impl::reset(size_t width, size_t height, VBitmap::Format format)
{
mRoData = nullptr;
mWidth = uint(width);
mHeight = uint(height);
mFormat = format;
mDepth = depth(format);
mStride = ((mWidth * mDepth + 31) >> 5)
<< 2; // bytes per scanline (must be multiple of 4)
mOwnData = std::make_unique<uchar[]>(mStride * mHeight);
}
void VBitmap::Impl::reset(uchar *data, size_t width, size_t height, size_t bytesPerLine,
VBitmap::Format format)
{
mRoData = data;
mWidth = uint(width);
mHeight = uint(height);
mStride = uint(bytesPerLine);
mFormat = format;
mDepth = depth(format);
mOwnData = nullptr;
}
uchar VBitmap::Impl::depth(VBitmap::Format format)
{
uchar depth = 1;
switch (format) {
case VBitmap::Format::Alpha8:
depth = 8;
break;
case VBitmap::Format::ARGB32:
case VBitmap::Format::ARGB32_Premultiplied:
depth = 32;
break;
default:
break;
}
return depth;
}
void VBitmap::Impl::fill(uint /*pixel*/)
{
//@TODO
}
void VBitmap::Impl::updateLuma()
{
if (mFormat != VBitmap::Format::ARGB32_Premultiplied) return;
auto dataPtr = data();
for (uint col = 0; col < mHeight; col++) {
uint *pixel = (uint *)(dataPtr + mStride * col);
for (uint row = 0; row < mWidth; row++) {
int alpha = vAlpha(*pixel);
if (alpha == 0) {
pixel++;
continue;
}
int red = vRed(*pixel);
int green = vGreen(*pixel);
int blue = vBlue(*pixel);
if (alpha != 255) {
// un multiply
red = (red * 255) / alpha;
green = (green * 255) / alpha;
blue = (blue * 255) / alpha;
}
int luminosity = int(0.299f * red + 0.587f * green + 0.114f * blue);
*pixel = luminosity << 24;
pixel++;
}
}
}
VBitmap::VBitmap(size_t width, size_t height, VBitmap::Format format)
{
if (width <= 0 || height <= 0 || format == Format::Invalid) return;
mImpl = rc_ptr<Impl>(width, height, format);
}
VBitmap::VBitmap(uchar *data, size_t width, size_t height, size_t bytesPerLine,
VBitmap::Format format)
{
if (!data || width <= 0 || height <= 0 || bytesPerLine <= 0 ||
format == Format::Invalid)
return;
mImpl = rc_ptr<Impl>(data, width, height, bytesPerLine, format);
}
void VBitmap::reset(uchar *data, size_t w, size_t h, size_t bytesPerLine,
VBitmap::Format format)
{
if (mImpl) {
mImpl->reset(data, w, h, bytesPerLine, format);
} else {
mImpl = rc_ptr<Impl>(data, w, h, bytesPerLine, format);
}
}
void VBitmap::reset(size_t w, size_t h, VBitmap::Format format)
{
if (mImpl) {
if (w == mImpl->width() && h == mImpl->height() &&
format == mImpl->format()) {
return;
}
mImpl->reset(w, h, format);
} else {
mImpl = rc_ptr<Impl>(w, h, format);
}
}
size_t VBitmap::stride() const
{
return mImpl ? mImpl->stride() : 0;
}
size_t VBitmap::width() const
{
return mImpl ? mImpl->width() : 0;
}
size_t VBitmap::height() const
{
return mImpl ? mImpl->height() : 0;
}
size_t VBitmap::depth() const
{
return mImpl ? mImpl->mDepth : 0;
}
uchar *VBitmap::data()
{
return mImpl ? mImpl->data() : nullptr;
}
uchar *VBitmap::data() const
{
return mImpl ? mImpl->data() : nullptr;
}
VRect VBitmap::rect() const
{
return mImpl ? mImpl->rect() : VRect();
}
VSize VBitmap::size() const
{
return mImpl ? mImpl->size() : VSize();
}
bool VBitmap::valid() const
{
return mImpl;
}
VBitmap::Format VBitmap::format() const
{
return mImpl ? mImpl->format() : VBitmap::Format::Invalid;
}
void VBitmap::fill(uint pixel)
{
if (mImpl) mImpl->fill(pixel);
}
/*
* This is special function which converts
* RGB value to Luminosity and stores it in
* the Alpha component of the pixel.
* After this conversion the bitmap data is no more
* in RGB space. but the Alpha component contains the
* Luminosity value of the pixel in HSL color space.
* NOTE: this api has its own special usecase
* make sure you know what you are doing before using
* this api.
*/
void VBitmap::updateLuma()
{
if (mImpl) mImpl->updateLuma();
}
V_END_NAMESPACE
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