diff options
Diffstat (limited to 'xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp | 304 |
1 files changed, 160 insertions, 144 deletions
diff --git a/xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp b/xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp index fa75cd8995..6c08f42b07 100644 --- a/xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp +++ b/xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.cpp @@ -25,163 +25,179 @@ #include "../common/BC_CommonBitMatrix.h"
#include "BC_QRAlignmentPattern.h"
#include "BC_QRAlignmentPatternFinder.h"
-CBC_QRAlignmentPatternFinder::CBC_QRAlignmentPatternFinder(CBC_CommonBitMatrix *image,
- int32_t startX,
- int32_t startY,
- int32_t width,
- int32_t height,
- FX_FLOAT moduleSize): m_image(image),
- m_startX(startX),
- m_startY(startY),
- m_width(width),
- m_height(height),
- m_moduleSize(moduleSize)
+CBC_QRAlignmentPatternFinder::CBC_QRAlignmentPatternFinder(
+ CBC_CommonBitMatrix* image,
+ int32_t startX,
+ int32_t startY,
+ int32_t width,
+ int32_t height,
+ FX_FLOAT moduleSize)
+ : m_image(image),
+ m_startX(startX),
+ m_startY(startY),
+ m_width(width),
+ m_height(height),
+ m_moduleSize(moduleSize)
{
- m_crossCheckStateCount.SetSize(3);
+ m_crossCheckStateCount.SetSize(3);
}
-CBC_QRAlignmentPatternFinder::~CBC_QRAlignmentPatternFinder()
-{
- for (int32_t i = 0; i < m_possibleCenters.GetSize(); i++) {
- delete (CBC_QRAlignmentPattern*)m_possibleCenters[i];
- }
- m_possibleCenters.RemoveAll();
+CBC_QRAlignmentPatternFinder::~CBC_QRAlignmentPatternFinder() {
+ for (int32_t i = 0; i < m_possibleCenters.GetSize(); i++) {
+ delete (CBC_QRAlignmentPattern*)m_possibleCenters[i];
+ }
+ m_possibleCenters.RemoveAll();
}
-CBC_QRAlignmentPattern *CBC_QRAlignmentPatternFinder::Find(int32_t &e)
-{
- int32_t startX = m_startX;
- int32_t height = m_height;
- int32_t maxJ = startX + m_width;
- int32_t middleI = m_startY + (height >> 1);
- CFX_Int32Array stateCount;
- stateCount.SetSize(3);
- for (int32_t iGen = 0; iGen < height; iGen++) {
- int32_t i = middleI + ((iGen & 0x01) == 0 ? ((iGen + 1) >> 1) : -((iGen + 1) >> 1));
- stateCount[0] = 0;
- stateCount[1] = 0;
- stateCount[2] = 0;
- int32_t j = startX;
- while (j < maxJ && !m_image->Get(j, i)) {
- j++;
- }
- int32_t currentState = 0;
- while (j < maxJ) {
- if (m_image->Get(j, i)) {
- if (currentState == 1) {
- stateCount[currentState]++;
- } else {
- if (currentState == 2) {
- if (FoundPatternCross(stateCount)) {
- CBC_QRAlignmentPattern *confirmed = HandlePossibleCenter(stateCount, i, j);
- if (confirmed != NULL) {
- return confirmed;
- }
- }
- stateCount[0] = stateCount[2];
- stateCount[1] = 1;
- stateCount[2] = 0;
- currentState = 1;
- } else {
- stateCount[++currentState]++;
- }
- }
- } else {
- if (currentState == 1) {
- currentState++;
- }
- stateCount[currentState]++;
- }
- j++;
- }
- if (FoundPatternCross(stateCount)) {
- CBC_QRAlignmentPattern *confirmed = HandlePossibleCenter(stateCount, i, maxJ);
- if (confirmed != NULL) {
+CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::Find(int32_t& e) {
+ int32_t startX = m_startX;
+ int32_t height = m_height;
+ int32_t maxJ = startX + m_width;
+ int32_t middleI = m_startY + (height >> 1);
+ CFX_Int32Array stateCount;
+ stateCount.SetSize(3);
+ for (int32_t iGen = 0; iGen < height; iGen++) {
+ int32_t i =
+ middleI + ((iGen & 0x01) == 0 ? ((iGen + 1) >> 1) : -((iGen + 1) >> 1));
+ stateCount[0] = 0;
+ stateCount[1] = 0;
+ stateCount[2] = 0;
+ int32_t j = startX;
+ while (j < maxJ && !m_image->Get(j, i)) {
+ j++;
+ }
+ int32_t currentState = 0;
+ while (j < maxJ) {
+ if (m_image->Get(j, i)) {
+ if (currentState == 1) {
+ stateCount[currentState]++;
+ } else {
+ if (currentState == 2) {
+ if (FoundPatternCross(stateCount)) {
+ CBC_QRAlignmentPattern* confirmed =
+ HandlePossibleCenter(stateCount, i, j);
+ if (confirmed != NULL) {
return confirmed;
+ }
}
+ stateCount[0] = stateCount[2];
+ stateCount[1] = 1;
+ stateCount[2] = 0;
+ currentState = 1;
+ } else {
+ stateCount[++currentState]++;
+ }
}
+ } else {
+ if (currentState == 1) {
+ currentState++;
+ }
+ stateCount[currentState]++;
+ }
+ j++;
}
- if (m_possibleCenters.GetSize() != 0) {
- return ((CBC_QRAlignmentPattern*) (m_possibleCenters[0]) )->Clone();
+ if (FoundPatternCross(stateCount)) {
+ CBC_QRAlignmentPattern* confirmed =
+ HandlePossibleCenter(stateCount, i, maxJ);
+ if (confirmed != NULL) {
+ return confirmed;
+ }
}
- e = BCExceptionRead;
- BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
- return NULL;
+ }
+ if (m_possibleCenters.GetSize() != 0) {
+ return ((CBC_QRAlignmentPattern*)(m_possibleCenters[0]))->Clone();
+ }
+ e = BCExceptionRead;
+ BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
+ return NULL;
}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CenterFromEnd(const CFX_Int32Array &stateCount, int32_t end)
-{
- return (FX_FLOAT) (end - stateCount[2]) - stateCount[1] / 2.0f;
+FX_FLOAT CBC_QRAlignmentPatternFinder::CenterFromEnd(
+ const CFX_Int32Array& stateCount,
+ int32_t end) {
+ return (FX_FLOAT)(end - stateCount[2]) - stateCount[1] / 2.0f;
}
-FX_BOOL CBC_QRAlignmentPatternFinder::FoundPatternCross(const CFX_Int32Array &stateCount)
-{
- FX_FLOAT moduleSize = m_moduleSize;
- FX_FLOAT maxVariance = moduleSize / 2.0f;
- for (int32_t i = 0; i < 3; i++) {
- if (fabs(moduleSize - stateCount[i]) >= maxVariance) {
- return false;
- }
+FX_BOOL CBC_QRAlignmentPatternFinder::FoundPatternCross(
+ const CFX_Int32Array& stateCount) {
+ FX_FLOAT moduleSize = m_moduleSize;
+ FX_FLOAT maxVariance = moduleSize / 2.0f;
+ for (int32_t i = 0; i < 3; i++) {
+ if (fabs(moduleSize - stateCount[i]) >= maxVariance) {
+ return false;
}
- return TRUE;
+ }
+ return TRUE;
}
-FX_FLOAT CBC_QRAlignmentPatternFinder::CrossCheckVertical(int32_t startI, int32_t centerJ, int32_t maxCount, int32_t originalStateCountTotal)
-{
- CBC_CommonBitMatrix *image = m_image;
- int32_t maxI = m_image->GetHeight();
- CFX_Int32Array stateCount;
- stateCount.Copy(m_crossCheckStateCount);
- stateCount[0] = 0;
- stateCount[1] = 0;
- stateCount[2] = 0;
- int32_t i = startI;
- while (i >= 0 && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
- stateCount[1]++;
- i--;
- }
- if (i < 0 || stateCount[1] > maxCount) {
- return FXSYS_nan();
- }
- while (i >= 0 && !m_image->Get(centerJ, i) && stateCount[0] <= maxCount) {
- stateCount[0]++;
- i--;
- }
- if (stateCount[0] > maxCount) {
- return FXSYS_nan();
- }
- i = startI + 1;
- while (i < maxI && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
- stateCount[1]++;
- i++;
- }
- if (i == maxI || stateCount[1] > maxCount) {
- return FXSYS_nan();
- }
- while (i < maxI && !m_image->Get(centerJ, i) && stateCount[2] <= maxCount) {
- stateCount[2]++;
- i++;
- }
- if (stateCount[2] > maxCount) {
- return FXSYS_nan();
- }
- int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
- if (5 * abs(stateCountTotal - originalStateCountTotal) >= originalStateCountTotal) {
- return FXSYS_nan();
- }
- return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, i) : FXSYS_nan();
+FX_FLOAT CBC_QRAlignmentPatternFinder::CrossCheckVertical(
+ int32_t startI,
+ int32_t centerJ,
+ int32_t maxCount,
+ int32_t originalStateCountTotal) {
+ CBC_CommonBitMatrix* image = m_image;
+ int32_t maxI = m_image->GetHeight();
+ CFX_Int32Array stateCount;
+ stateCount.Copy(m_crossCheckStateCount);
+ stateCount[0] = 0;
+ stateCount[1] = 0;
+ stateCount[2] = 0;
+ int32_t i = startI;
+ while (i >= 0 && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
+ stateCount[1]++;
+ i--;
+ }
+ if (i < 0 || stateCount[1] > maxCount) {
+ return FXSYS_nan();
+ }
+ while (i >= 0 && !m_image->Get(centerJ, i) && stateCount[0] <= maxCount) {
+ stateCount[0]++;
+ i--;
+ }
+ if (stateCount[0] > maxCount) {
+ return FXSYS_nan();
+ }
+ i = startI + 1;
+ while (i < maxI && m_image->Get(centerJ, i) && stateCount[1] <= maxCount) {
+ stateCount[1]++;
+ i++;
+ }
+ if (i == maxI || stateCount[1] > maxCount) {
+ return FXSYS_nan();
+ }
+ while (i < maxI && !m_image->Get(centerJ, i) && stateCount[2] <= maxCount) {
+ stateCount[2]++;
+ i++;
+ }
+ if (stateCount[2] > maxCount) {
+ return FXSYS_nan();
+ }
+ int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
+ if (5 * abs(stateCountTotal - originalStateCountTotal) >=
+ originalStateCountTotal) {
+ return FXSYS_nan();
+ }
+ return FoundPatternCross(stateCount) ? CenterFromEnd(stateCount, i)
+ : FXSYS_nan();
}
-CBC_QRAlignmentPattern *CBC_QRAlignmentPatternFinder::HandlePossibleCenter(const CFX_Int32Array &stateCount, int32_t i, int32_t j)
-{
- int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
- FX_FLOAT centerJ = CenterFromEnd(stateCount, j);
- FX_FLOAT centerI = CrossCheckVertical(i, (int32_t) centerJ, 2 * stateCount[1], stateCountTotal);
- if (!FXSYS_isnan(centerI)) {
- FX_FLOAT estimatedModuleSize = (FX_FLOAT) (stateCount[0] + stateCount[1] + stateCount[2]) / 3.0f;
- int32_t max = m_possibleCenters.GetSize();
- for (int32_t index = 0; index < max; index++) {
- CBC_QRAlignmentPattern *center = (CBC_QRAlignmentPattern *)(m_possibleCenters[index]);
- if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
- return FX_NEW CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize);
- }
- }
- m_possibleCenters.Add(FX_NEW CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize));
+CBC_QRAlignmentPattern* CBC_QRAlignmentPatternFinder::HandlePossibleCenter(
+ const CFX_Int32Array& stateCount,
+ int32_t i,
+ int32_t j) {
+ int32_t stateCountTotal = stateCount[0] + stateCount[1] + stateCount[2];
+ FX_FLOAT centerJ = CenterFromEnd(stateCount, j);
+ FX_FLOAT centerI = CrossCheckVertical(i, (int32_t)centerJ, 2 * stateCount[1],
+ stateCountTotal);
+ if (!FXSYS_isnan(centerI)) {
+ FX_FLOAT estimatedModuleSize =
+ (FX_FLOAT)(stateCount[0] + stateCount[1] + stateCount[2]) / 3.0f;
+ int32_t max = m_possibleCenters.GetSize();
+ for (int32_t index = 0; index < max; index++) {
+ CBC_QRAlignmentPattern* center =
+ (CBC_QRAlignmentPattern*)(m_possibleCenters[index]);
+ if (center->AboutEquals(estimatedModuleSize, centerI, centerJ)) {
+ return FX_NEW CBC_QRAlignmentPattern(centerJ, centerI,
+ estimatedModuleSize);
+ }
}
- return NULL;
+ m_possibleCenters.Add(
+ FX_NEW CBC_QRAlignmentPattern(centerJ, centerI, estimatedModuleSize));
+ }
+ return NULL;
}
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