// 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 "../barcode.h" | |
#include "../common/BC_CommonPerspectiveTransform.h" | |
#include "../common/BC_CommonBitMatrix.h" | |
#include "BC_QRGridSampler.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, FX_INT32 &e) | |
{ | |
FX_INT32 width = image->GetWidth(); | |
FX_INT32 height = image->GetHeight(); | |
FX_BOOL nudged = TRUE; | |
FX_INT32 offset; | |
for (offset = 0; offset < points->GetSize() && nudged; offset += 2) { | |
FX_INT32 x = (FX_INT32) (*points)[offset]; | |
FX_INT32 y = (FX_INT32) (*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) { | |
FX_INT32 x = (FX_INT32) (*points)[offset]; | |
FX_INT32 y = (FX_INT32) (*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, FX_INT32 dimensionX, FX_INT32 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, FX_INT32 &e) | |
{ | |
CBC_AutoPtr<CBC_CommonPerspectiveTransform> transform(CBC_CommonPerspectiveTransform::QuadrilateralToQuadrilateral( | |
p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, | |
p1FromX, p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY)); | |
CBC_CommonBitMatrix *tempBitM = FX_NEW CBC_CommonBitMatrix(); | |
tempBitM->Init(dimensionX, dimensionY); | |
CBC_AutoPtr<CBC_CommonBitMatrix> bits(tempBitM); | |
CFX_FloatArray points; | |
points.SetSize(dimensionX << 1); | |
for (FX_INT32 y = 0; y < dimensionY; y++) { | |
FX_INT32 max = points.GetSize(); | |
FX_FLOAT iValue = (FX_FLOAT) (y + 0.5f); | |
FX_INT32 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((FX_INT32) points[x], (FX_INT32) points[x + 1])) { | |
bits->Set(x >> 1, y); | |
} | |
} | |
} | |
return bits.release(); | |
} |