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authordsinclair <dsinclair@chromium.org>2016-06-16 12:29:07 -0700
committerCommit bot <commit-bot@chromium.org>2016-06-16 12:29:07 -0700
commita26153440b46b3b37b7e81435debb296f22769f4 (patch)
tree37b3073d15af7ae2850b5a02be87123feb54a054 /xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
parent8320ee28f24615d1d619a5db1b7c235ea6f91dde (diff)
downloadpdfium-a26153440b46b3b37b7e81435debb296f22769f4.tar.xz
Remove barcode reading code.
We never read barcodes, we only write them. Remove code related to barcode reading. Review-Url: https://codereview.chromium.org/2071633002
Diffstat (limited to 'xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp')
-rw-r--r--xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp121
1 files changed, 0 insertions, 121 deletions
diff --git a/xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp b/xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
deleted file mode 100644
index 53eabefd95..0000000000
--- a/xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
+++ /dev/null
@@ -1,121 +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 2013 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 <limits>
-
-#include "xfa/fxbarcode/pdf417/BC_PDF417CodewordDecoder.h"
-#include "xfa/fxbarcode/pdf417/BC_PDF417Common.h"
-
-#define SYMBOL_TABLE_Length 2787
-
-namespace {
-
-FX_FLOAT RATIOS_TABLE[SYMBOL_TABLE_Length][8] = {{0}};
-
-} // namespace
-
-CBC_PDF417CodewordDecoder::CBC_PDF417CodewordDecoder() {}
-CBC_PDF417CodewordDecoder::~CBC_PDF417CodewordDecoder() {}
-void CBC_PDF417CodewordDecoder::Initialize() {
- for (int32_t i = 0; i < SYMBOL_TABLE_Length; i++) {
- int32_t currentSymbol = CBC_PDF417Common::SYMBOL_TABLE[i];
- int32_t currentBit = currentSymbol & 0x1;
- for (int32_t j = 0; j < CBC_PDF417Common::BARS_IN_MODULE; j++) {
- FX_FLOAT size = 0.0f;
- while ((currentSymbol & 0x1) == currentBit) {
- size += 1.0f;
- currentSymbol >>= 1;
- }
- currentBit = currentSymbol & 0x1;
- RATIOS_TABLE[i][CBC_PDF417Common::BARS_IN_MODULE - j - 1] =
- size / CBC_PDF417Common::MODULES_IN_CODEWORD;
- }
- }
-}
-void CBC_PDF417CodewordDecoder::Finalize() {}
-int32_t CBC_PDF417CodewordDecoder::getDecodedValue(
- CFX_Int32Array& moduleBitCount) {
- CFX_Int32Array* array = sampleBitCounts(moduleBitCount);
- int32_t decodedValue = getDecodedCodewordValue(*array);
- delete array;
- if (decodedValue != -1) {
- return decodedValue;
- }
- return getClosestDecodedValue(moduleBitCount);
-}
-CFX_Int32Array* CBC_PDF417CodewordDecoder::sampleBitCounts(
- CFX_Int32Array& moduleBitCount) {
- FX_FLOAT bitCountSum =
- (FX_FLOAT)CBC_PDF417Common::getBitCountSum(moduleBitCount);
- CFX_Int32Array* bitCount = new CFX_Int32Array();
- bitCount->SetSize(CBC_PDF417Common::BARS_IN_MODULE);
- int32_t bitCountIndex = 0;
- int32_t sumPreviousBits = 0;
- for (int32_t i = 0; i < CBC_PDF417Common::MODULES_IN_CODEWORD; i++) {
- FX_FLOAT sampleIndex =
- bitCountSum / (2 * CBC_PDF417Common::MODULES_IN_CODEWORD) +
- (i * bitCountSum) / CBC_PDF417Common::MODULES_IN_CODEWORD;
- if (sumPreviousBits + moduleBitCount.GetAt(bitCountIndex) <= sampleIndex) {
- sumPreviousBits += moduleBitCount.GetAt(bitCountIndex);
- bitCountIndex++;
- }
- bitCount->SetAt(bitCountIndex, bitCount->GetAt(bitCountIndex) + 1);
- }
- return bitCount;
-}
-int32_t CBC_PDF417CodewordDecoder::getDecodedCodewordValue(
- CFX_Int32Array& moduleBitCount) {
- int32_t decodedValue = getBitValue(moduleBitCount);
- return CBC_PDF417Common::getCodeword(decodedValue) == -1 ? -1 : decodedValue;
-}
-int32_t CBC_PDF417CodewordDecoder::getBitValue(CFX_Int32Array& moduleBitCount) {
- int64_t result = 0;
- for (int32_t i = 0; i < moduleBitCount.GetSize(); i++) {
- for (int32_t bit = 0; bit < moduleBitCount.GetAt(i); bit++) {
- result = (result << 1) | (i % 2 == 0 ? 1 : 0);
- }
- }
- return (int32_t)result;
-}
-int32_t CBC_PDF417CodewordDecoder::getClosestDecodedValue(
- CFX_Int32Array& moduleBitCount) {
- int32_t bitCountSum = CBC_PDF417Common::getBitCountSum(moduleBitCount);
- CFX_FloatArray bitCountRatios;
- bitCountRatios.SetSize(CBC_PDF417Common::BARS_IN_MODULE);
- for (int32_t i = 0; i < bitCountRatios.GetSize(); i++) {
- bitCountRatios[i] = moduleBitCount.GetAt(i) / (FX_FLOAT)bitCountSum;
- }
- FX_FLOAT bestMatchError = std::numeric_limits<int32_t>::max();
- int32_t bestMatch = -1;
- for (int32_t j = 0; j < SYMBOL_TABLE_Length; j++) {
- FX_FLOAT error = 0.0f;
- for (int32_t k = 0; k < CBC_PDF417Common::BARS_IN_MODULE; k++) {
- FX_FLOAT diff = RATIOS_TABLE[j][k] - bitCountRatios[k];
- error += diff * diff;
- }
- if (error < bestMatchError) {
- bestMatchError = error;
- bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j];
- }
- }
- return bestMatch;
-}