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author | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 14:14:16 -0400 |
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committer | Dan Sinclair <dsinclair@chromium.org> | 2016-03-14 14:14:16 -0400 |
commit | 1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch) | |
tree | 285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp | |
parent | f766ad219f66543654520f6a1955836f519e26d1 (diff) | |
download | pdfium-1770c021cf998ff1b33855b1397f6ea8ff9f7cd7.tar.xz |
Move xfa/src up to xfa/.
This CL moves the xfa/src files up to the xfa/ directory and fixes the includes,
include guards, and build files.
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/1803723002 .
Diffstat (limited to 'xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp')
-rw-r--r-- | xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp b/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp deleted file mode 100644 index 8babc9c78f..0000000000 --- a/xfa/src/fxbarcode/common/BC_GlobalHistogramBinarizer.cpp +++ /dev/null @@ -1,173 +0,0 @@ -// 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 2009 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/src/fxbarcode/common/BC_GlobalHistogramBinarizer.h" - -#include <memory> - -#include "xfa/src/fxbarcode/BC_Binarizer.h" -#include "xfa/src/fxbarcode/BC_LuminanceSource.h" -#include "xfa/src/fxbarcode/common/BC_CommonBitArray.h" -#include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h" -#include "xfa/src/fxbarcode/utils.h" - -const int32_t LUMINANCE_BITS = 5; -const int32_t LUMINANCE_SHIFT = 8 - LUMINANCE_BITS; -const int32_t LUMINANCE_BUCKETS = 1 << LUMINANCE_BITS; - -CBC_GlobalHistogramBinarizer::CBC_GlobalHistogramBinarizer( - CBC_LuminanceSource* source) - : CBC_Binarizer(source) {} -CBC_GlobalHistogramBinarizer::~CBC_GlobalHistogramBinarizer() {} -CBC_CommonBitArray* CBC_GlobalHistogramBinarizer::GetBlackRow( - int32_t y, - CBC_CommonBitArray* row, - int32_t& e) { - CBC_LuminanceSource* source = GetLuminanceSource(); - int32_t width = source->GetWidth(); - std::unique_ptr<CBC_CommonBitArray> result(new CBC_CommonBitArray(width)); - InitArrays(width); - CFX_ByteArray* localLuminances = source->GetRow(y, m_luminance, e); - if (e != BCExceptionNO) { - return result.release(); - } - CFX_Int32Array localBuckets; - localBuckets.Copy(m_buckets); - int32_t x; - for (x = 0; x < width; x++) { - int32_t pixel = (*localLuminances)[x] & 0xff; - localBuckets[pixel >> LUMINANCE_SHIFT]++; - } - int32_t blackPoint = EstimateBlackPoint(localBuckets, e); - if (e != BCExceptionNO) { - return result.release(); - } - int32_t left = (*localLuminances)[0] & 0xff; - int32_t center = (*localLuminances)[1] & 0xff; - for (x = 1; x < width - 1; x++) { - int32_t right = (*localLuminances)[x + 1] & 0xff; - int32_t luminance = ((center << 2) - left - right) >> 1; - if (luminance < blackPoint) { - result->Set(x); - } - left = center; - center = right; - } - return result.release(); -} -CBC_CommonBitMatrix* CBC_GlobalHistogramBinarizer::GetBlackMatrix(int32_t& e) { - CBC_LuminanceSource* source = GetLuminanceSource(); - int32_t width = source->GetWidth(); - int32_t height = source->GetHeight(); - std::unique_ptr<CBC_CommonBitMatrix> matrix(new CBC_CommonBitMatrix()); - matrix->Init(width, height); - InitArrays(width); - CFX_Int32Array localBuckets; - localBuckets.Copy(m_buckets); - int32_t y; - for (y = 1; y < 5; y++) { - int32_t row = height * y / 5; - CFX_ByteArray* localLuminances = source->GetRow(row, m_luminance, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - int32_t right = (width << 2) / 5; - int32_t x; - for (x = width / 5; x < right; x++) { - int32_t pixel = (*localLuminances)[x] & 0xff; - localBuckets[pixel >> LUMINANCE_SHIFT]++; - } - } - int32_t blackPoint = EstimateBlackPoint(localBuckets, e); - BC_EXCEPTION_CHECK_ReturnValue(e, NULL); - std::unique_ptr<CFX_ByteArray> localLuminances(source->GetMatrix()); - for (y = 0; y < height; y++) { - int32_t offset = y * width; - for (int32_t x = 0; x < width; x++) { - int32_t pixel = (*localLuminances)[offset + x] & 0xff; - if (pixel < blackPoint) { - matrix->Set(x, y); - } - } - } - return matrix.release(); -} -void CBC_GlobalHistogramBinarizer::InitArrays(int32_t luminanceSize) { - if (m_luminance.GetSize() < luminanceSize) { - m_luminance.SetSize(luminanceSize); - } - if (m_buckets.GetSize() <= 0) { - m_buckets.SetSize(LUMINANCE_BUCKETS); - } else { - int32_t x; - for (x = 0; x < LUMINANCE_BUCKETS; x++) { - m_buckets[x] = 0; - } - } -} -int32_t CBC_GlobalHistogramBinarizer::EstimateBlackPoint( - CFX_Int32Array& buckets, - int32_t& e) { - int32_t numBuckets = buckets.GetSize(); - int32_t maxBucketCount = 0; - int32_t firstPeak = 0; - int32_t firstPeakSize = 0; - int32_t x; - for (x = 0; x < numBuckets; x++) { - if (buckets[x] > firstPeakSize) { - firstPeak = x; - firstPeakSize = buckets[x]; - } - if (buckets[x] > maxBucketCount) { - maxBucketCount = buckets[x]; - } - } - int32_t secondPeak = 0; - int32_t secondPeakScore = 0; - for (x = 0; x < numBuckets; x++) { - int32_t distanceToBiggest = x - firstPeak; - int32_t score = buckets[x] * distanceToBiggest * distanceToBiggest; - if (score > secondPeakScore) { - secondPeak = x; - secondPeakScore = score; - } - } - if (firstPeak > secondPeak) { - int32_t temp = firstPeak; - firstPeak = secondPeak; - secondPeak = temp; - } - if (secondPeak - firstPeak <= numBuckets >> 4) { - e = BCExceptionRead; - return 0; - } - int32_t bestValley = secondPeak - 1; - int32_t bestValleyScore = -1; - for (x = secondPeak - 1; x > firstPeak; x--) { - int32_t fromFirst = x - firstPeak; - int32_t score = fromFirst * fromFirst * (secondPeak - x) * - (maxBucketCount - buckets[x]); - if (score > bestValleyScore) { - bestValley = x; - bestValleyScore = score; - } - } - return bestValley << LUMINANCE_SHIFT; -} |