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276 lines
8.4 KiB
C++
276 lines
8.4 KiB
C++
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "TestScaling.h"
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#include "ImageScaling.h"
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using namespace mozilla::gfx;
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TestScaling::TestScaling()
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{
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REGISTER_TEST(TestScaling, BasicHalfScale);
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REGISTER_TEST(TestScaling, DoubleHalfScale);
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REGISTER_TEST(TestScaling, UnevenHalfScale);
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REGISTER_TEST(TestScaling, OddStrideHalfScale);
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REGISTER_TEST(TestScaling, VerticalHalfScale);
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REGISTER_TEST(TestScaling, HorizontalHalfScale);
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REGISTER_TEST(TestScaling, MixedHalfScale);
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}
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void
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TestScaling::BasicHalfScale()
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{
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std::vector<uint8_t> data;
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data.resize(500 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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pixels[y * 500 + x + 1] = 0xff00ffff;
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pixels[(y + 1) * 500 + x] = 0xff000000;
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(500, 500));
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scaler.ScaleForSize(IntSize(220, 240));
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VERIFY(scaler.GetSize().width == 250);
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VERIFY(scaler.GetSize().height == 250);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 250; y++) {
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for (int x = 0; x < 250; x++) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
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}
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}
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}
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void
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TestScaling::DoubleHalfScale()
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{
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std::vector<uint8_t> data;
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data.resize(500 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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pixels[y * 500 + x + 1] = 0xff00ffff;
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pixels[(y + 1) * 500 + x] = 0xff000000;
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(500, 500));
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scaler.ScaleForSize(IntSize(120, 110));
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VERIFY(scaler.GetSize().width == 125);
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VERIFY(scaler.GetSize().height == 125);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 125; y++) {
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for (int x = 0; x < 125; x++) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
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}
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}
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}
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void
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TestScaling::UnevenHalfScale()
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{
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std::vector<uint8_t> data;
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// Use a 16-byte aligned stride still, we test none-aligned strides
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// separately.
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data.resize(499 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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if (x < 498) {
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pixels[y * 500 + x + 1] = 0xff00ffff;
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}
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if (y < 498) {
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pixels[(y + 1) * 500 + x] = 0xff000000;
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if (x < 498) {
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(499, 499));
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scaler.ScaleForSize(IntSize(220, 220));
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VERIFY(scaler.GetSize().width == 249);
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VERIFY(scaler.GetSize().height == 249);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 249; y++) {
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for (int x = 0; x < 249; x++) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
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}
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}
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}
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void
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TestScaling::OddStrideHalfScale()
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{
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std::vector<uint8_t> data;
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// Use a 4-byte aligned stride to test if that doesn't cause any issues.
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data.resize(499 * 499 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 499 + x] = 0xff00ff00;
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if (x < 498) {
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pixels[y * 499 + x + 1] = 0xff00ffff;
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}
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if (y < 498) {
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pixels[(y + 1) * 499 + x] = 0xff000000;
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if (x < 498) {
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pixels[(y + 1) * 499 + x + 1] = 0xff0000ff;
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}
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}
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}
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}
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ImageHalfScaler scaler(data.data(), 499 * 4, IntSize(499, 499));
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scaler.ScaleForSize(IntSize(220, 220));
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VERIFY(scaler.GetSize().width == 249);
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VERIFY(scaler.GetSize().height == 249);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 249; y++) {
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for (int x = 0; x < 249; x++) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f7f);
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}
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}
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}
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void
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TestScaling::VerticalHalfScale()
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{
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std::vector<uint8_t> data;
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data.resize(500 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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pixels[y * 500 + x + 1] = 0xff00ffff;
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pixels[(y + 1) * 500 + x] = 0xff000000;
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(500, 500));
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scaler.ScaleForSize(IntSize(400, 240));
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VERIFY(scaler.GetSize().width == 500);
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VERIFY(scaler.GetSize().height == 250);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 250; y++) {
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for (int x = 0; x < 500; x += 2) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff007f00);
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x + 1] == 0xff007fff);
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}
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}
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}
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void
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TestScaling::HorizontalHalfScale()
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{
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std::vector<uint8_t> data;
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data.resize(500 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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pixels[y * 500 + x + 1] = 0xff00ffff;
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pixels[(y + 1) * 500 + x] = 0xff000000;
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(500, 500));
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scaler.ScaleForSize(IntSize(240, 400));
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VERIFY(scaler.GetSize().width == 250);
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VERIFY(scaler.GetSize().height == 500);
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pixels = (uint32_t*)scaler.GetScaledData();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 250; x++) {
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VERIFY(pixels[y * (scaler.GetStride() / 4) + x] == 0xff00ff7f);
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VERIFY(pixels[(y + 1) * (scaler.GetStride() / 4) + x] == 0xff00007f);
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}
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}
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}
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void
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TestScaling::MixedHalfScale()
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{
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std::vector<uint8_t> data;
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data.resize(500 * 500 * 4);
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uint32_t *pixels = (uint32_t*)data.data();
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for (int y = 0; y < 500; y += 2) {
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for (int x = 0; x < 500; x += 2) {
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pixels[y * 500 + x] = 0xff00ff00;
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pixels[y * 500 + x + 1] = 0xff00ffff;
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pixels[(y + 1) * 500 + x] = 0xff000000;
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pixels[(y + 1) * 500 + x + 1] = 0xff0000ff;
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}
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}
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ImageHalfScaler scaler(data.data(), 500 * 4, IntSize(500, 500));
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scaler.ScaleForSize(IntSize(120, 240));
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VERIFY(scaler.GetSize().width == 125);
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VERIFY(scaler.GetSize().height == 250);
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scaler.ScaleForSize(IntSize(240, 120));
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VERIFY(scaler.GetSize().width == 250);
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VERIFY(scaler.GetSize().height == 125);
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}
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