1 files changed, 42 insertions, 0 deletions
diff --git a/core/fxge/dib/cfx_filtereddib.cpp b/core/fxge/dib/cfx_filtereddib.cpp
new file mode 100644
index 0000000000..2d6edd0d60
--- /dev/null
+++ b/core/fxge/dib/cfx_filtereddib.cpp
@@ -0,0 +1,42 @@
+// Copyright 2017 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
+
+#include "core/fxge/dib/cfx_filtereddib.h"
+
+#include "core/fxge/fx_dib.h"
+
+CFX_FilteredDIB::CFX_FilteredDIB() {}
+
+CFX_FilteredDIB::~CFX_FilteredDIB() {}
+
+void CFX_FilteredDIB::LoadSrc(const CFX_RetainPtr<CFX_DIBSource>& pSrc) {
+  m_pSrc = pSrc;
+  m_Width = pSrc->GetWidth();
+  m_Height = pSrc->GetHeight();
+  FXDIB_Format format = GetDestFormat();
+  m_bpp = static_cast<uint8_t>(format);
+  m_AlphaFlag = static_cast<uint8_t>(format >> 8);
+  m_Pitch = (m_Width * (format & 0xff) + 31) / 32 * 4;
+  m_pPalette.reset(GetDestPalette());
+  m_Scanline.resize(m_Pitch);
+}
+
+const uint8_t* CFX_FilteredDIB::GetScanline(int line) const {
+  TranslateScanline(m_pSrc->GetScanline(line), &m_Scanline);
+  return m_Scanline.data();
+}
+
+void CFX_FilteredDIB::DownSampleScanline(int line,
+                                         uint8_t* dest_scan,
+                                         int dest_bpp,
+                                         int dest_width,
+                                         bool bFlipX,
+                                         int clip_left,
+                                         int clip_width) const {
+  m_pSrc->DownSampleScanline(line, dest_scan, dest_bpp, dest_width, bFlipX,
+                             clip_left, clip_width);
+  TranslateDownSamples(dest_scan, dest_scan, clip_width, dest_bpp);
+}