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-rw-r--r--xfa/fxbarcode/qrcode/BC_QRGridSampler.cpp139
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diff --git a/xfa/fxbarcode/qrcode/BC_QRGridSampler.cpp b/xfa/fxbarcode/qrcode/BC_QRGridSampler.cpp
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+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+// Original code is licensed as follows:
+/*
+ * Copyright 2007 ZXing authors
+ *
+ * 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 "xfa/fxbarcode/qrcode/BC_QRGridSampler.h"
+
+#include <memory>
+
+#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
+#include "xfa/fxbarcode/common/BC_CommonPerspectiveTransform.h"
+#include "xfa/fxbarcode/utils.h"
+
+CBC_QRGridSampler CBC_QRGridSampler::m_gridSampler;
+
+CBC_QRGridSampler::CBC_QRGridSampler() {}
+CBC_QRGridSampler::~CBC_QRGridSampler() {}
+CBC_QRGridSampler& CBC_QRGridSampler::GetInstance() {
+ return m_gridSampler;
+}
+void CBC_QRGridSampler::CheckAndNudgePoints(CBC_CommonBitMatrix* image,
+ CFX_FloatArray* points,
+ int32_t& e) {
+ int32_t width = image->GetWidth();
+ int32_t height = image->GetHeight();
+ FX_BOOL nudged = TRUE;
+ int32_t offset;
+ for (offset = 0; offset < points->GetSize() && nudged; offset += 2) {
+ int32_t x = (int32_t)(*points)[offset];
+ int32_t y = (int32_t)(*points)[offset + 1];
+ if (x < -1 || x > width || y < -1 || y > height) {
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ }
+ nudged = FALSE;
+ if (x == -1) {
+ (*points)[offset] = 0.0f;
+ nudged = TRUE;
+ } else if (x == width) {
+ (*points)[offset] = (FX_FLOAT)(width - 1);
+ nudged = TRUE;
+ }
+ if (y == -1) {
+ (*points)[offset + 1] = 0.0f;
+ nudged = TRUE;
+ } else if (y == height) {
+ (*points)[offset + 1] = (FX_FLOAT)(height - 1);
+ nudged = TRUE;
+ }
+ }
+ nudged = TRUE;
+ for (offset = (*points).GetSize() - 2; offset >= 0 && nudged; offset -= 2) {
+ int32_t x = (int32_t)(*points)[offset];
+ int32_t y = (int32_t)(*points)[offset + 1];
+ if (x < -1 || x > width || y < -1 || y > height) {
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnVoid(e);
+ }
+ nudged = FALSE;
+ if (x == -1) {
+ (*points)[offset] = 0.0f;
+ nudged = TRUE;
+ } else if (x == width) {
+ (*points)[offset] = (FX_FLOAT)(width - 1);
+ nudged = TRUE;
+ }
+ if (y == -1) {
+ (*points)[offset + 1] = 0.0f;
+ nudged = TRUE;
+ } else if (y == height) {
+ (*points)[offset + 1] = (FX_FLOAT)(height - 1);
+ nudged = TRUE;
+ }
+ }
+}
+CBC_CommonBitMatrix* CBC_QRGridSampler::SampleGrid(CBC_CommonBitMatrix* image,
+ int32_t dimensionX,
+ int32_t dimensionY,
+ FX_FLOAT p1ToX,
+ FX_FLOAT p1ToY,
+ FX_FLOAT p2ToX,
+ FX_FLOAT p2ToY,
+ FX_FLOAT p3ToX,
+ FX_FLOAT p3ToY,
+ FX_FLOAT p4ToX,
+ FX_FLOAT p4ToY,
+ FX_FLOAT p1FromX,
+ FX_FLOAT p1FromY,
+ FX_FLOAT p2FromX,
+ FX_FLOAT p2FromY,
+ FX_FLOAT p3FromX,
+ FX_FLOAT p3FromY,
+ FX_FLOAT p4FromX,
+ FX_FLOAT p4FromY,
+ int32_t& e) {
+ std::unique_ptr<CBC_CommonPerspectiveTransform> transform(
+ CBC_CommonPerspectiveTransform::QuadrilateralToQuadrilateral(
+ p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX,
+ p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY));
+ std::unique_ptr<CBC_CommonBitMatrix> bits(new CBC_CommonBitMatrix());
+ bits->Init(dimensionX, dimensionY);
+ CFX_FloatArray points;
+ points.SetSize(dimensionX << 1);
+ for (int32_t y = 0; y < dimensionY; y++) {
+ int32_t max = points.GetSize();
+ FX_FLOAT iValue = (FX_FLOAT)(y + 0.5f);
+ int32_t x;
+ for (x = 0; x < max; x += 2) {
+ points[x] = (FX_FLOAT)((x >> 1) + 0.5f);
+ points[x + 1] = iValue;
+ }
+ transform->TransformPoints(&points);
+ CheckAndNudgePoints(image, &points, e);
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ for (x = 0; x < max; x += 2) {
+ if (image->Get((int32_t)points[x], (int32_t)points[x + 1])) {
+ bits->Set(x >> 1, y);
+ }
+ }
+ }
+ return bits.release();
+}