summaryrefslogtreecommitdiff
path: root/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp')
-rw-r--r--xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp158
1 files changed, 77 insertions, 81 deletions
diff --git a/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp b/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
index 822a47a4d4..6e7d26b4af 100644
--- a/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
+++ b/xfa/src/fxbarcode/pdf417/BC_PDF417CodewordDecoder.cpp
@@ -23,96 +23,92 @@
#include "../barcode.h"
#include "BC_PDF417Common.h"
#include "BC_PDF417CodewordDecoder.h"
-#define SYMBOL_TABLE_Length 2787
-#define Float_MAX_VALUE 2147483647
+#define SYMBOL_TABLE_Length 2787
+#define Float_MAX_VALUE 2147483647
FX_FLOAT CBC_PDF417CodewordDecoder::RATIOS_TABLE[2787][8] = {0};
-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;
- }
+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);
+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 = FX_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);
+CFX_Int32Array* CBC_PDF417CodewordDecoder::sampleBitCounts(
+ CFX_Int32Array& moduleBitCount) {
+ FX_FLOAT bitCountSum =
+ (FX_FLOAT)CBC_PDF417Common::getBitCountSum(moduleBitCount);
+ CFX_Int32Array* bitCount = FX_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++;
}
- return bitCount;
+ 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::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);
- }
+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;
+ }
+ 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;
+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 = (FX_FLOAT)Float_MAX_VALUE;
+ 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;
}
- FX_FLOAT bestMatchError = (FX_FLOAT)Float_MAX_VALUE;
- 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];
- }
+ if (error < bestMatchError) {
+ bestMatchError = error;
+ bestMatch = CBC_PDF417Common::SYMBOL_TABLE[j];
}
- return bestMatch;
+ }
+ return bestMatch;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 17:26:11 +0000