Remove CBC_BarcodeMatrix::m_matrixOut and just return the bit array.

Change-Id: I12893784321f92e5cac2b80653897007b6e63c7e
Reviewed-on: https://pdfium-review.googlesource.com/41111
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

3 files changed, 6 insertions, 7 deletions

diff --git a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
index 1d05486f30..70e7cd9598 100644
--- a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
+++ b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.cpp
@@ -33,12 +33,12 @@ CBC_BarcodeMatrix::CBC_BarcodeMatrix(size_t width, size_t height)
 
 CBC_BarcodeMatrix::~CBC_BarcodeMatrix() {}
 
-std::vector<uint8_t>& CBC_BarcodeMatrix::getMatrix() {
-  m_matrixOut.resize(m_width * m_height);
+std::vector<uint8_t> CBC_BarcodeMatrix::toBitArray() {
+  std::vector<uint8_t> bitArray(m_width * m_height);
   for (size_t i = 0; i < m_height; ++i) {
     std::vector<uint8_t>& bytearray = m_matrix[i]->getRow();
     for (size_t j = 0; j < m_width; ++j)
-      m_matrixOut[i * m_width + j] = bytearray[j];
+      bitArray[i * m_width + j] = bytearray[j];
   }
-  return m_matrixOut;
+  return bitArray;
 }
diff --git a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.h b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.h
index 1359ac2e63..60978391cb 100644
--- a/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.h
+++ b/fxbarcode/pdf417/BC_PDF417BarcodeMatrix.h
@@ -20,11 +20,10 @@ class CBC_BarcodeMatrix {
   CBC_BarcodeRow* getRow(size_t row) const { return m_matrix[row].get(); }
   size_t getWidth() const { return m_width; }
   size_t getHeight() const { return m_height; }
-  std::vector<uint8_t>& getMatrix();
+  std::vector<uint8_t> toBitArray();
 
  private:
   std::vector<std::unique_ptr<CBC_BarcodeRow>> m_matrix;
-  std::vector<uint8_t> m_matrixOut;
   size_t m_width;
   size_t m_height;
 };
diff --git a/fxbarcode/pdf417/BC_PDF417Writer.cpp b/fxbarcode/pdf417/BC_PDF417Writer.cpp
index 129d59c393..479bc2cd85 100644
--- a/fxbarcode/pdf417/BC_PDF417Writer.cpp
+++ b/fxbarcode/pdf417/BC_PDF417Writer.cpp
@@ -62,7 +62,7 @@ uint8_t* CBC_PDF417Writer::Encode(const WideString& contents,
     return nullptr;
 
   CBC_BarcodeMatrix* barcodeMatrix = encoder.getBarcodeMatrix();
-  std::vector<uint8_t> matrixData = barcodeMatrix->getMatrix();
+  std::vector<uint8_t> matrixData = barcodeMatrix->toBitArray();
   int32_t matrixWidth = barcodeMatrix->getWidth();
   int32_t matrixHeight = barcodeMatrix->getHeight();