1 // Copyright 2017 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxge/dib/cfx_filtereddib.h"
8
9 #include "core/fxge/fx_dib.h"
10
CFX_FilteredDIB()11 CFX_FilteredDIB::CFX_FilteredDIB() {}
12
~CFX_FilteredDIB()13 CFX_FilteredDIB::~CFX_FilteredDIB() {}
14
LoadSrc(const RetainPtr<CFX_DIBSource> & pSrc)15 void CFX_FilteredDIB::LoadSrc(const RetainPtr<CFX_DIBSource>& pSrc) {
16 m_pSrc = pSrc;
17 m_Width = pSrc->GetWidth();
18 m_Height = pSrc->GetHeight();
19 FXDIB_Format format = GetDestFormat();
20 m_bpp = static_cast<uint8_t>(format);
21 m_AlphaFlag = static_cast<uint8_t>(format >> 8);
22 m_Pitch = (m_Width * (format & 0xff) + 31) / 32 * 4;
23 m_pPalette.reset(GetDestPalette());
24 m_Scanline.resize(m_Pitch);
25 }
26
GetScanline(int line) const27 const uint8_t* CFX_FilteredDIB::GetScanline(int line) const {
28 TranslateScanline(m_pSrc->GetScanline(line), &m_Scanline);
29 return m_Scanline.data();
30 }
31
DownSampleScanline(int line,uint8_t * dest_scan,int dest_bpp,int dest_width,bool bFlipX,int clip_left,int clip_width) const32 void CFX_FilteredDIB::DownSampleScanline(int line,
33 uint8_t* dest_scan,
34 int dest_bpp,
35 int dest_width,
36 bool bFlipX,
37 int clip_left,
38 int clip_width) const {
39 m_pSrc->DownSampleScanline(line, dest_scan, dest_bpp, dest_width, bFlipX,
40 clip_left, clip_width);
41 TranslateDownSamples(dest_scan, dest_scan, clip_width, dest_bpp);
42 }
43