Split fx_dib part 1
Move CFX_DIBSource to its own file. Also move the classes that inherit from it
to their own headers. Their cpp's will be added in followup.
Change-Id: Id2b53e124ea5445c558bfcf627bf526870cc92e8
Reviewed-on: https://pdfium-review.googlesource.com/3450
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index dfc6d6c..f142d5f 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -862,6 +862,10 @@
"core/fxge/cfx_substfont.h",
"core/fxge/cfx_unicodeencoding.h",
"core/fxge/cfx_windowsdevice.h",
+ "core/fxge/dib/cfx_dibitmap.h",
+ "core/fxge/dib/cfx_dibsource.cpp",
+ "core/fxge/dib/cfx_dibsource.h",
+ "core/fxge/dib/cfx_filtereddib.h",
"core/fxge/dib/dib_int.h",
"core/fxge/dib/fx_dib_composite.cpp",
"core/fxge/dib/fx_dib_convert.cpp",
diff --git a/core/fpdfapi/render/cpdf_dibtransferfunc.h b/core/fpdfapi/render/cpdf_dibtransferfunc.h
index d57ec0f..25c76ec 100644
--- a/core/fpdfapi/render/cpdf_dibtransferfunc.h
+++ b/core/fpdfapi/render/cpdf_dibtransferfunc.h
@@ -9,6 +9,7 @@
#include <vector>
+#include "core/fxge/dib/cfx_filtereddib.h"
#include "core/fxge/fx_dib.h"
class CPDF_TransferFunc;
diff --git a/core/fxge/dib/cfx_dibitmap.h b/core/fxge/dib/cfx_dibitmap.h
new file mode 100644
index 0000000..9cb46af
--- /dev/null
+++ b/core/fxge/dib/cfx_dibitmap.h
@@ -0,0 +1,135 @@
+// 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
+
+#ifndef CORE_FXGE_DIB_CFX_DIBITMAP_H_
+#define CORE_FXGE_DIB_CFX_DIBITMAP_H_
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxge/dib/cfx_dibsource.h"
+#include "third_party/base/stl_util.h"
+
+class CFX_DIBitmap : public CFX_DIBSource {
+ public:
+ template <typename T, typename... Args>
+ friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+ ~CFX_DIBitmap() override;
+
+ bool Create(int width,
+ int height,
+ FXDIB_Format format,
+ uint8_t* pBuffer = nullptr,
+ int pitch = 0);
+
+ bool Copy(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
+
+ // CFX_DIBSource
+ uint8_t* GetBuffer() const override;
+ const uint8_t* GetScanline(int line) const override;
+ void DownSampleScanline(int line,
+ uint8_t* dest_scan,
+ int dest_bpp,
+ int dest_width,
+ bool bFlipX,
+ int clip_left,
+ int clip_width) const override;
+
+ void TakeOver(CFX_RetainPtr<CFX_DIBitmap>&& pSrcBitmap);
+ bool ConvertFormat(FXDIB_Format format);
+ void Clear(uint32_t color);
+
+ uint32_t GetPixel(int x, int y) const;
+ void SetPixel(int x, int y, uint32_t color);
+
+ bool LoadChannel(FXDIB_Channel destChannel,
+ const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+ FXDIB_Channel srcChannel);
+ bool LoadChannel(FXDIB_Channel destChannel, int value);
+
+ bool MultiplyAlpha(int alpha);
+ bool MultiplyAlpha(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask);
+
+ bool TransferBitmap(int dest_left,
+ int dest_top,
+ int width,
+ int height,
+ const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+ int src_left,
+ int src_top);
+
+ bool CompositeBitmap(int dest_left,
+ int dest_top,
+ int width,
+ int height,
+ const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+ int src_left,
+ int src_top,
+ int blend_type = FXDIB_BLEND_NORMAL,
+ const CFX_ClipRgn* pClipRgn = nullptr,
+ bool bRgbByteOrder = false,
+ void* pIccTransform = nullptr);
+
+ bool TransferMask(int dest_left,
+ int dest_top,
+ int width,
+ int height,
+ const CFX_RetainPtr<CFX_DIBSource>& pMask,
+ uint32_t color,
+ int src_left,
+ int src_top,
+ int alpha_flag = 0,
+ void* pIccTransform = nullptr);
+
+ bool CompositeMask(int dest_left,
+ int dest_top,
+ int width,
+ int height,
+ const CFX_RetainPtr<CFX_DIBSource>& pMask,
+ uint32_t color,
+ int src_left,
+ int src_top,
+ int blend_type = FXDIB_BLEND_NORMAL,
+ const CFX_ClipRgn* pClipRgn = nullptr,
+ bool bRgbByteOrder = false,
+ int alpha_flag = 0,
+ void* pIccTransform = nullptr);
+
+ bool CompositeRect(int dest_left,
+ int dest_top,
+ int width,
+ int height,
+ uint32_t color,
+ int alpha_flag = 0,
+ void* pIccTransform = nullptr);
+
+ bool ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
+
+#if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
+ void PreMultiply();
+#endif
+#if defined _SKIA_SUPPORT_PATHS_
+ void UnPreMultiply();
+#endif
+
+ protected:
+ CFX_DIBitmap();
+ CFX_DIBitmap(const CFX_DIBitmap& src);
+ bool GetGrayData(void* pIccTransform = nullptr);
+
+#if defined _SKIA_SUPPORT_PATHS_
+ enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied };
+#endif
+
+ uint8_t* m_pBuffer;
+#if defined _SKIA_SUPPORT_PATHS_
+ Format m_nFormat;
+#endif
+ bool m_bExtBuf;
+};
+
+#endif // CORE_FXGE_DIB_CFX_DIBITMAP_H_
diff --git a/core/fxge/dib/cfx_dibsource.cpp b/core/fxge/dib/cfx_dibsource.cpp
new file mode 100644
index 0000000..a3e5c30
--- /dev/null
+++ b/core/fxge/dib/cfx_dibsource.cpp
@@ -0,0 +1,530 @@
+// 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_dibsource.h"
+
+#include <algorithm>
+#include <memory>
+#include <utility>
+
+#include "core/fxge/dib/cfx_dibitmap.h"
+#include "core/fxge/ge/cfx_cliprgn.h"
+#include "third_party/base/ptr_util.h"
+
+CFX_DIBSource::CFX_DIBSource()
+ : m_Width(0), m_Height(0), m_bpp(0), m_AlphaFlag(0), m_Pitch(0) {}
+
+CFX_DIBSource::~CFX_DIBSource() {}
+
+uint8_t* CFX_DIBSource::GetBuffer() const {
+ return nullptr;
+}
+
+bool CFX_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const {
+ return false;
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::Clone(const FX_RECT* pClip) const {
+ FX_RECT rect(0, 0, m_Width, m_Height);
+ if (pClip) {
+ rect.Intersect(*pClip);
+ if (rect.IsEmpty())
+ return nullptr;
+ }
+ auto pNewBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat()))
+ return nullptr;
+
+ pNewBitmap->SetPalette(m_pPalette.get());
+ pNewBitmap->SetAlphaMask(m_pAlphaMask, pClip);
+ if (GetBPP() == 1 && rect.left % 8 != 0) {
+ int left_shift = rect.left % 32;
+ int right_shift = 32 - left_shift;
+ int dword_count = pNewBitmap->m_Pitch / 4;
+ for (int row = rect.top; row < rect.bottom; row++) {
+ uint32_t* src_scan = (uint32_t*)GetScanline(row) + rect.left / 32;
+ uint32_t* dest_scan = (uint32_t*)pNewBitmap->GetScanline(row - rect.top);
+ for (int i = 0; i < dword_count; i++) {
+ dest_scan[i] =
+ (src_scan[i] << left_shift) | (src_scan[i + 1] >> right_shift);
+ }
+ }
+ } else {
+ int copy_len = (pNewBitmap->GetWidth() * pNewBitmap->GetBPP() + 7) / 8;
+ if (m_Pitch < (uint32_t)copy_len)
+ copy_len = m_Pitch;
+
+ for (int row = rect.top; row < rect.bottom; row++) {
+ const uint8_t* src_scan = GetScanline(row) + rect.left * m_bpp / 8;
+ uint8_t* dest_scan = (uint8_t*)pNewBitmap->GetScanline(row - rect.top);
+ FXSYS_memcpy(dest_scan, src_scan, copy_len);
+ }
+ }
+ return pNewBitmap;
+}
+
+void CFX_DIBSource::BuildPalette() {
+ if (m_pPalette)
+ return;
+
+ if (GetBPP() == 1) {
+ m_pPalette.reset(FX_Alloc(uint32_t, 2));
+ if (IsCmykImage()) {
+ m_pPalette.get()[0] = 0xff;
+ m_pPalette.get()[1] = 0;
+ } else {
+ m_pPalette.get()[0] = 0xff000000;
+ m_pPalette.get()[1] = 0xffffffff;
+ }
+ } else if (GetBPP() == 8) {
+ m_pPalette.reset(FX_Alloc(uint32_t, 256));
+ if (IsCmykImage()) {
+ for (int i = 0; i < 256; i++)
+ m_pPalette.get()[i] = 0xff - i;
+ } else {
+ for (int i = 0; i < 256; i++)
+ m_pPalette.get()[i] = 0xff000000 | (i * 0x10101);
+ }
+ }
+}
+
+bool CFX_DIBSource::BuildAlphaMask() {
+ if (m_pAlphaMask)
+ return true;
+
+ m_pAlphaMask = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!m_pAlphaMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
+ m_pAlphaMask = nullptr;
+ return false;
+ }
+ FXSYS_memset(m_pAlphaMask->GetBuffer(), 0xff,
+ m_pAlphaMask->GetHeight() * m_pAlphaMask->GetPitch());
+ return true;
+}
+
+uint32_t CFX_DIBSource::GetPaletteEntry(int index) const {
+ ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
+ if (m_pPalette) {
+ return m_pPalette.get()[index];
+ }
+ if (IsCmykImage()) {
+ if (GetBPP() == 1) {
+ return index ? 0 : 0xff;
+ }
+ return 0xff - index;
+ }
+ if (GetBPP() == 1) {
+ return index ? 0xffffffff : 0xff000000;
+ }
+ return index * 0x10101 | 0xff000000;
+}
+
+void CFX_DIBSource::SetPaletteEntry(int index, uint32_t color) {
+ ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
+ if (!m_pPalette) {
+ BuildPalette();
+ }
+ m_pPalette.get()[index] = color;
+}
+
+int CFX_DIBSource::FindPalette(uint32_t color) const {
+ ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
+ if (!m_pPalette) {
+ if (IsCmykImage()) {
+ if (GetBPP() == 1) {
+ return ((uint8_t)color == 0xff) ? 0 : 1;
+ }
+ return 0xff - (uint8_t)color;
+ }
+ if (GetBPP() == 1) {
+ return ((uint8_t)color == 0xff) ? 1 : 0;
+ }
+ return (uint8_t)color;
+ }
+ int palsize = (1 << GetBPP());
+ for (int i = 0; i < palsize; i++)
+ if (m_pPalette.get()[i] == color) {
+ return i;
+ }
+ return -1;
+}
+
+void CFX_DIBSource::GetOverlapRect(int& dest_left,
+ int& dest_top,
+ int& width,
+ int& height,
+ int src_width,
+ int src_height,
+ int& src_left,
+ int& src_top,
+ const CFX_ClipRgn* pClipRgn) {
+ if (width == 0 || height == 0) {
+ return;
+ }
+ ASSERT(width > 0 && height > 0);
+ if (dest_left > m_Width || dest_top > m_Height) {
+ width = 0;
+ height = 0;
+ return;
+ }
+ int x_offset = dest_left - src_left;
+ int y_offset = dest_top - src_top;
+ FX_RECT src_rect(src_left, src_top, src_left + width, src_top + height);
+ FX_RECT src_bound(0, 0, src_width, src_height);
+ src_rect.Intersect(src_bound);
+ FX_RECT dest_rect(src_rect.left + x_offset, src_rect.top + y_offset,
+ src_rect.right + x_offset, src_rect.bottom + y_offset);
+ FX_RECT dest_bound(0, 0, m_Width, m_Height);
+ dest_rect.Intersect(dest_bound);
+ if (pClipRgn) {
+ dest_rect.Intersect(pClipRgn->GetBox());
+ }
+ dest_left = dest_rect.left;
+ dest_top = dest_rect.top;
+ src_left = dest_left - x_offset;
+ src_top = dest_top - y_offset;
+ width = dest_rect.right - dest_rect.left;
+ height = dest_rect.bottom - dest_rect.top;
+}
+
+void CFX_DIBSource::SetPalette(const uint32_t* pSrc) {
+ static const uint32_t kPaletteSize = 256;
+ if (!pSrc || GetBPP() > 8) {
+ m_pPalette.reset();
+ return;
+ }
+ uint32_t pal_size = 1 << GetBPP();
+ if (!m_pPalette)
+ m_pPalette.reset(FX_Alloc(uint32_t, pal_size));
+ pal_size = std::min(pal_size, kPaletteSize);
+ FXSYS_memcpy(m_pPalette.get(), pSrc, pal_size * sizeof(uint32_t));
+}
+
+void CFX_DIBSource::GetPalette(uint32_t* pal, int alpha) const {
+ ASSERT(GetBPP() <= 8 && !IsCmykImage());
+ if (GetBPP() == 1) {
+ pal[0] = ((m_pPalette ? m_pPalette.get()[0] : 0xff000000) & 0xffffff) |
+ (alpha << 24);
+ pal[1] = ((m_pPalette ? m_pPalette.get()[1] : 0xffffffff) & 0xffffff) |
+ (alpha << 24);
+ return;
+ }
+ if (m_pPalette) {
+ for (int i = 0; i < 256; i++) {
+ pal[i] = (m_pPalette.get()[i] & 0x00ffffff) | (alpha << 24);
+ }
+ } else {
+ for (int i = 0; i < 256; i++) {
+ pal[i] = (i * 0x10101) | (alpha << 24);
+ }
+ }
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::CloneAlphaMask(
+ const FX_RECT* pClip) const {
+ ASSERT(GetFormat() == FXDIB_Argb);
+ FX_RECT rect(0, 0, m_Width, m_Height);
+ if (pClip) {
+ rect.Intersect(*pClip);
+ if (rect.IsEmpty())
+ return nullptr;
+ }
+ auto pMask = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!pMask->Create(rect.Width(), rect.Height(), FXDIB_8bppMask))
+ return nullptr;
+
+ for (int row = rect.top; row < rect.bottom; row++) {
+ const uint8_t* src_scan = GetScanline(row) + rect.left * 4 + 3;
+ uint8_t* dest_scan =
+ const_cast<uint8_t*>(pMask->GetScanline(row - rect.top));
+ for (int col = rect.left; col < rect.right; col++) {
+ *dest_scan++ = *src_scan;
+ src_scan += 4;
+ }
+ }
+ return pMask;
+}
+
+bool CFX_DIBSource::SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask,
+ const FX_RECT* pClip) {
+ if (!HasAlpha() || GetFormat() == FXDIB_Argb)
+ return false;
+
+ if (!pAlphaMask) {
+ m_pAlphaMask->Clear(0xff000000);
+ return true;
+ }
+ FX_RECT rect(0, 0, pAlphaMask->m_Width, pAlphaMask->m_Height);
+ if (pClip) {
+ rect.Intersect(*pClip);
+ if (rect.IsEmpty() || rect.Width() != m_Width ||
+ rect.Height() != m_Height) {
+ return false;
+ }
+ } else {
+ if (pAlphaMask->m_Width != m_Width || pAlphaMask->m_Height != m_Height)
+ return false;
+ }
+ for (int row = 0; row < m_Height; row++) {
+ FXSYS_memcpy(const_cast<uint8_t*>(m_pAlphaMask->GetScanline(row)),
+ pAlphaMask->GetScanline(row + rect.top) + rect.left,
+ m_pAlphaMask->m_Pitch);
+ }
+ return true;
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::FlipImage(bool bXFlip,
+ bool bYFlip) const {
+ auto pFlipped = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!pFlipped->Create(m_Width, m_Height, GetFormat()))
+ return nullptr;
+
+ pFlipped->SetPalette(m_pPalette.get());
+ uint8_t* pDestBuffer = pFlipped->GetBuffer();
+ int Bpp = m_bpp / 8;
+ for (int row = 0; row < m_Height; row++) {
+ const uint8_t* src_scan = GetScanline(row);
+ uint8_t* dest_scan =
+ pDestBuffer + m_Pitch * (bYFlip ? (m_Height - row - 1) : row);
+ if (!bXFlip) {
+ FXSYS_memcpy(dest_scan, src_scan, m_Pitch);
+ continue;
+ }
+ if (m_bpp == 1) {
+ FXSYS_memset(dest_scan, 0, m_Pitch);
+ for (int col = 0; col < m_Width; col++)
+ if (src_scan[col / 8] & (1 << (7 - col % 8))) {
+ int dest_col = m_Width - col - 1;
+ dest_scan[dest_col / 8] |= (1 << (7 - dest_col % 8));
+ }
+ } else {
+ dest_scan += (m_Width - 1) * Bpp;
+ if (Bpp == 1) {
+ for (int col = 0; col < m_Width; col++) {
+ *dest_scan = *src_scan;
+ dest_scan--;
+ src_scan++;
+ }
+ } else if (Bpp == 3) {
+ for (int col = 0; col < m_Width; col++) {
+ dest_scan[0] = src_scan[0];
+ dest_scan[1] = src_scan[1];
+ dest_scan[2] = src_scan[2];
+ dest_scan -= 3;
+ src_scan += 3;
+ }
+ } else {
+ ASSERT(Bpp == 4);
+ for (int col = 0; col < m_Width; col++) {
+ *(uint32_t*)dest_scan = *(uint32_t*)src_scan;
+ dest_scan -= 4;
+ src_scan += 4;
+ }
+ }
+ }
+ }
+ if (m_pAlphaMask) {
+ pDestBuffer = pFlipped->m_pAlphaMask->GetBuffer();
+ uint32_t dest_pitch = pFlipped->m_pAlphaMask->GetPitch();
+ for (int row = 0; row < m_Height; row++) {
+ const uint8_t* src_scan = m_pAlphaMask->GetScanline(row);
+ uint8_t* dest_scan =
+ pDestBuffer + dest_pitch * (bYFlip ? (m_Height - row - 1) : row);
+ if (!bXFlip) {
+ FXSYS_memcpy(dest_scan, src_scan, dest_pitch);
+ continue;
+ }
+ dest_scan += (m_Width - 1);
+ for (int col = 0; col < m_Width; col++) {
+ *dest_scan = *src_scan;
+ dest_scan--;
+ src_scan++;
+ }
+ }
+ }
+ return pFlipped;
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::CloneConvert(
+ FXDIB_Format dest_format) {
+ if (dest_format == GetFormat())
+ return Clone(nullptr);
+
+ auto pClone = pdfium::MakeRetain<CFX_DIBitmap>();
+ if (!pClone->Create(m_Width, m_Height, dest_format))
+ return nullptr;
+
+ CFX_RetainPtr<CFX_DIBitmap> pSrcAlpha;
+ if (HasAlpha()) {
+ if (GetFormat() == FXDIB_Argb)
+ pSrcAlpha = CloneAlphaMask();
+ else
+ pSrcAlpha = m_pAlphaMask;
+
+ if (!pSrcAlpha)
+ return nullptr;
+ }
+ bool ret = true;
+ if (dest_format & 0x0200) {
+ if (dest_format == FXDIB_Argb) {
+ ret = pSrcAlpha ? pClone->LoadChannel(FXDIB_Alpha, pSrcAlpha, FXDIB_Alpha)
+ : pClone->LoadChannel(FXDIB_Alpha, 0xff);
+ } else {
+ ret = pClone->SetAlphaMask(pSrcAlpha);
+ }
+ }
+ if (!ret)
+ return nullptr;
+
+ CFX_RetainPtr<CFX_DIBSource> holder(this);
+ std::unique_ptr<uint32_t, FxFreeDeleter> pal_8bpp;
+ if (!ConvertBuffer(dest_format, pClone->GetBuffer(), pClone->GetPitch(),
+ m_Width, m_Height, holder, 0, 0, &pal_8bpp)) {
+ return nullptr;
+ }
+ if (pal_8bpp)
+ pClone->SetPalette(pal_8bpp.get());
+
+ return pClone;
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::SwapXY(
+ bool bXFlip,
+ bool bYFlip,
+ const FX_RECT* pDestClip) const {
+ FX_RECT dest_clip(0, 0, m_Height, m_Width);
+ if (pDestClip)
+ dest_clip.Intersect(*pDestClip);
+ if (dest_clip.IsEmpty())
+ return nullptr;
+
+ auto pTransBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
+ int result_height = dest_clip.Height();
+ int result_width = dest_clip.Width();
+ if (!pTransBitmap->Create(result_width, result_height, GetFormat()))
+ return nullptr;
+
+ pTransBitmap->SetPalette(m_pPalette.get());
+ int dest_pitch = pTransBitmap->GetPitch();
+ uint8_t* dest_buf = pTransBitmap->GetBuffer();
+ int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left;
+ int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right;
+ int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top;
+ int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom;
+ if (GetBPP() == 1) {
+ FXSYS_memset(dest_buf, 0xff, dest_pitch * result_height);
+ for (int row = row_start; row < row_end; row++) {
+ const uint8_t* src_scan = GetScanline(row);
+ int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
+ dest_clip.left;
+ uint8_t* dest_scan = dest_buf;
+ if (bYFlip) {
+ dest_scan += (result_height - 1) * dest_pitch;
+ }
+ int dest_step = bYFlip ? -dest_pitch : dest_pitch;
+ for (int col = col_start; col < col_end; col++) {
+ if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) {
+ dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8));
+ }
+ dest_scan += dest_step;
+ }
+ }
+ } else {
+ int nBytes = GetBPP() / 8;
+ int dest_step = bYFlip ? -dest_pitch : dest_pitch;
+ if (nBytes == 3) {
+ dest_step -= 2;
+ }
+ for (int row = row_start; row < row_end; row++) {
+ int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
+ dest_clip.left;
+ uint8_t* dest_scan = dest_buf + dest_col * nBytes;
+ if (bYFlip) {
+ dest_scan += (result_height - 1) * dest_pitch;
+ }
+ if (nBytes == 4) {
+ uint32_t* src_scan = (uint32_t*)GetScanline(row) + col_start;
+ for (int col = col_start; col < col_end; col++) {
+ *(uint32_t*)dest_scan = *src_scan++;
+ dest_scan += dest_step;
+ }
+ } else {
+ const uint8_t* src_scan = GetScanline(row) + col_start * nBytes;
+ if (nBytes == 1) {
+ for (int col = col_start; col < col_end; col++) {
+ *dest_scan = *src_scan++;
+ dest_scan += dest_step;
+ }
+ } else {
+ for (int col = col_start; col < col_end; col++) {
+ *dest_scan++ = *src_scan++;
+ *dest_scan++ = *src_scan++;
+ *dest_scan = *src_scan++;
+ dest_scan += dest_step;
+ }
+ }
+ }
+ }
+ }
+ if (m_pAlphaMask) {
+ dest_pitch = pTransBitmap->m_pAlphaMask->GetPitch();
+ dest_buf = pTransBitmap->m_pAlphaMask->GetBuffer();
+ int dest_step = bYFlip ? -dest_pitch : dest_pitch;
+ for (int row = row_start; row < row_end; row++) {
+ int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
+ dest_clip.left;
+ uint8_t* dest_scan = dest_buf + dest_col;
+ if (bYFlip) {
+ dest_scan += (result_height - 1) * dest_pitch;
+ }
+ const uint8_t* src_scan = m_pAlphaMask->GetScanline(row) + col_start;
+ for (int col = col_start; col < col_end; col++) {
+ *dest_scan = *src_scan++;
+ dest_scan += dest_step;
+ }
+ }
+ }
+ return pTransBitmap;
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::TransformTo(
+ const CFX_Matrix* pDestMatrix,
+ int& result_left,
+ int& result_top,
+ uint32_t flags,
+ const FX_RECT* pDestClip) {
+ CFX_RetainPtr<CFX_DIBSource> holder(this);
+ CFX_ImageTransformer transformer(holder, pDestMatrix, flags, pDestClip);
+ transformer.Start();
+ transformer.Continue(nullptr);
+ result_left = transformer.result().left;
+ result_top = transformer.result().top;
+ return transformer.DetachBitmap();
+}
+
+CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::StretchTo(int dest_width,
+ int dest_height,
+ uint32_t flags,
+ const FX_RECT* pClip) {
+ CFX_RetainPtr<CFX_DIBSource> holder(this);
+ FX_RECT clip_rect(0, 0, FXSYS_abs(dest_width), FXSYS_abs(dest_height));
+ if (pClip)
+ clip_rect.Intersect(*pClip);
+
+ if (clip_rect.IsEmpty())
+ return nullptr;
+
+ if (dest_width == m_Width && dest_height == m_Height)
+ return Clone(&clip_rect);
+
+ CFX_BitmapStorer storer;
+ CFX_ImageStretcher stretcher(&storer, holder, dest_width, dest_height,
+ clip_rect, flags);
+ if (stretcher.Start())
+ stretcher.Continue(nullptr);
+
+ return storer.Detach();
+}
diff --git a/core/fxge/dib/cfx_dibsource.h b/core/fxge/dib/cfx_dibsource.h
new file mode 100644
index 0000000..76f7009
--- /dev/null
+++ b/core/fxge/dib/cfx_dibsource.h
@@ -0,0 +1,176 @@
+// 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
+
+#ifndef CORE_FXGE_DIB_CFX_DIBSOURCE_H_
+#define CORE_FXGE_DIB_CFX_DIBSOURCE_H_
+
+#include <memory>
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_coordinates.h"
+
+enum FXDIB_Channel {
+ FXDIB_Red = 1,
+ FXDIB_Green,
+ FXDIB_Blue,
+ FXDIB_Cyan,
+ FXDIB_Magenta,
+ FXDIB_Yellow,
+ FXDIB_Black,
+ FXDIB_Alpha
+};
+
+enum FXDIB_Format {
+ FXDIB_Invalid = 0,
+ FXDIB_1bppMask = 0x101,
+ FXDIB_1bppRgb = 0x001,
+ FXDIB_1bppCmyk = 0x401,
+ FXDIB_8bppMask = 0x108,
+ FXDIB_8bppRgb = 0x008,
+ FXDIB_8bppRgba = 0x208,
+ FXDIB_8bppCmyk = 0x408,
+ FXDIB_8bppCmyka = 0x608,
+ FXDIB_Rgb = 0x018,
+ FXDIB_Rgba = 0x218,
+ FXDIB_Rgb32 = 0x020,
+ FXDIB_Argb = 0x220,
+ FXDIB_Cmyk = 0x420,
+ FXDIB_Cmyka = 0x620,
+};
+
+#define FXDIB_DOWNSAMPLE 0x04
+#define FXDIB_INTERPOL 0x20
+#define FXDIB_BICUBIC_INTERPOL 0x80
+#define FXDIB_NOSMOOTH 0x100
+#define FXDIB_BLEND_NORMAL 0
+#define FXDIB_BLEND_MULTIPLY 1
+#define FXDIB_BLEND_SCREEN 2
+#define FXDIB_BLEND_OVERLAY 3
+#define FXDIB_BLEND_DARKEN 4
+#define FXDIB_BLEND_LIGHTEN 5
+
+#define FXDIB_BLEND_COLORDODGE 6
+#define FXDIB_BLEND_COLORBURN 7
+#define FXDIB_BLEND_HARDLIGHT 8
+#define FXDIB_BLEND_SOFTLIGHT 9
+#define FXDIB_BLEND_DIFFERENCE 10
+#define FXDIB_BLEND_EXCLUSION 11
+#define FXDIB_BLEND_NONSEPARABLE 21
+#define FXDIB_BLEND_HUE 21
+#define FXDIB_BLEND_SATURATION 22
+#define FXDIB_BLEND_COLOR 23
+#define FXDIB_BLEND_LUMINOSITY 24
+#define FXDIB_BLEND_UNSUPPORTED -1
+
+class CFX_ClipRgn;
+class CFX_DIBitmap;
+
+class CFX_DIBSource : public CFX_Retainable {
+ public:
+ ~CFX_DIBSource() override;
+
+ virtual uint8_t* GetBuffer() const;
+ virtual const uint8_t* GetScanline(int line) const = 0;
+ virtual bool SkipToScanline(int line, IFX_Pause* pPause) const;
+ virtual void DownSampleScanline(int line,
+ uint8_t* dest_scan,
+ int dest_bpp,
+ int dest_width,
+ bool bFlipX,
+ int clip_left,
+ int clip_width) const = 0;
+
+ int GetWidth() const { return m_Width; }
+ int GetHeight() const { return m_Height; }
+
+ FXDIB_Format GetFormat() const {
+ return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp);
+ }
+ uint32_t GetPitch() const { return m_Pitch; }
+ uint32_t* GetPalette() const { return m_pPalette.get(); }
+ int GetBPP() const { return m_bpp; }
+
+ // TODO(thestig): Investigate this. Given the possible values of FXDIB_Format,
+ // it feels as though this should be implemented as !!(m_AlphaFlag & 1) and
+ // IsOpaqueImage() below should never be able to return true.
+ bool IsAlphaMask() const { return m_AlphaFlag == 1; }
+ bool HasAlpha() const { return !!(m_AlphaFlag & 2); }
+ bool IsOpaqueImage() const { return !(m_AlphaFlag & 3); }
+ bool IsCmykImage() const { return !!(m_AlphaFlag & 4); }
+
+ int GetPaletteSize() const {
+ return IsAlphaMask() ? 0 : (m_bpp == 1 ? 2 : (m_bpp == 8 ? 256 : 0));
+ }
+
+ uint32_t GetPaletteEntry(int index) const;
+
+ void SetPaletteEntry(int index, uint32_t color);
+ uint32_t GetPaletteArgb(int index) const { return GetPaletteEntry(index); }
+ void SetPaletteArgb(int index, uint32_t color) {
+ SetPaletteEntry(index, color);
+ }
+
+ // Copies into internally-owned palette.
+ void SetPalette(const uint32_t* pSrcPal);
+
+ CFX_RetainPtr<CFX_DIBitmap> Clone(const FX_RECT* pClip = nullptr) const;
+ CFX_RetainPtr<CFX_DIBitmap> CloneConvert(FXDIB_Format format);
+ CFX_RetainPtr<CFX_DIBitmap> StretchTo(int dest_width,
+ int dest_height,
+ uint32_t flags = 0,
+ const FX_RECT* pClip = nullptr);
+ CFX_RetainPtr<CFX_DIBitmap> TransformTo(const CFX_Matrix* pMatrix,
+ int& left,
+ int& top,
+ uint32_t flags = 0,
+ const FX_RECT* pClip = nullptr);
+ CFX_RetainPtr<CFX_DIBitmap> SwapXY(bool bXFlip,
+ bool bYFlip,
+ const FX_RECT* pClip = nullptr) const;
+ CFX_RetainPtr<CFX_DIBitmap> FlipImage(bool bXFlip, bool bYFlip) const;
+
+ CFX_RetainPtr<CFX_DIBitmap> CloneAlphaMask(
+ const FX_RECT* pClip = nullptr) const;
+
+ // Copies into internally-owned mask.
+ bool SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask,
+ const FX_RECT* pClip = nullptr);
+
+ void GetOverlapRect(int& dest_left,
+ int& dest_top,
+ int& width,
+ int& height,
+ int src_width,
+ int src_height,
+ int& src_left,
+ int& src_top,
+ const CFX_ClipRgn* pClipRgn);
+
+#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
+ void DebugVerifyBitmapIsPreMultiplied(void* buffer = nullptr) const;
+#endif
+
+ CFX_RetainPtr<CFX_DIBitmap> m_pAlphaMask;
+
+ protected:
+ CFX_DIBSource();
+
+ void BuildPalette();
+ bool BuildAlphaMask();
+ int FindPalette(uint32_t color) const;
+ void GetPalette(uint32_t* pal, int alpha) const;
+
+ int m_Width;
+ int m_Height;
+ int m_bpp;
+ uint32_t m_AlphaFlag;
+ uint32_t m_Pitch;
+ // TODO(weili): Use std::vector for this.
+ std::unique_ptr<uint32_t, FxFreeDeleter> m_pPalette;
+};
+
+#endif // CORE_FXGE_DIB_CFX_DIBSOURCE_H_
diff --git a/core/fxge/dib/cfx_filtereddib.h b/core/fxge/dib/cfx_filtereddib.h
new file mode 100644
index 0000000..3a16bb0
--- /dev/null
+++ b/core/fxge/dib/cfx_filtereddib.h
@@ -0,0 +1,50 @@
+// 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
+
+#ifndef CORE_FXGE_DIB_CFX_FILTEREDDIB_H_
+#define CORE_FXGE_DIB_CFX_FILTEREDDIB_H_
+
+#include <vector>
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "core/fxge/dib/cfx_dibsource.h"
+
+class CFX_FilteredDIB : public CFX_DIBSource {
+ public:
+ template <typename T, typename... Args>
+ friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
+
+ ~CFX_FilteredDIB() override;
+
+ virtual FXDIB_Format GetDestFormat() = 0;
+ virtual uint32_t* GetDestPalette() = 0;
+ virtual void TranslateScanline(const uint8_t* src_buf,
+ std::vector<uint8_t>* dest_buf) const = 0;
+ virtual void TranslateDownSamples(uint8_t* dest_buf,
+ const uint8_t* src_buf,
+ int pixels,
+ int Bpp) const = 0;
+
+ void LoadSrc(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
+
+ protected:
+ CFX_FilteredDIB();
+
+ // CFX_DIBSource
+ const uint8_t* GetScanline(int line) const override;
+ void DownSampleScanline(int line,
+ uint8_t* dest_scan,
+ int dest_bpp,
+ int dest_width,
+ bool bFlipX,
+ int clip_left,
+ int clip_width) const override;
+
+ CFX_RetainPtr<CFX_DIBSource> m_pSrc;
+ mutable std::vector<uint8_t> m_Scanline;
+};
+
+#endif // CORE_FXGE_DIB_CFX_FILTEREDDIB_H_
diff --git a/core/fxge/dib/fx_dib_convert.cpp b/core/fxge/dib/fx_dib_convert.cpp
index 624e143..419e654 100644
--- a/core/fxge/dib/fx_dib_convert.cpp
+++ b/core/fxge/dib/fx_dib_convert.cpp
@@ -787,49 +787,6 @@
}
}
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::CloneConvert(
- FXDIB_Format dest_format) {
- if (dest_format == GetFormat())
- return Clone(nullptr);
-
- auto pClone = pdfium::MakeRetain<CFX_DIBitmap>();
- if (!pClone->Create(m_Width, m_Height, dest_format))
- return nullptr;
-
- CFX_RetainPtr<CFX_DIBitmap> pSrcAlpha;
- if (HasAlpha()) {
- if (GetFormat() == FXDIB_Argb)
- pSrcAlpha = CloneAlphaMask();
- else
- pSrcAlpha = m_pAlphaMask;
-
- if (!pSrcAlpha)
- return nullptr;
- }
- bool ret = true;
- if (dest_format & 0x0200) {
- if (dest_format == FXDIB_Argb) {
- ret = pSrcAlpha ? pClone->LoadChannel(FXDIB_Alpha, pSrcAlpha, FXDIB_Alpha)
- : pClone->LoadChannel(FXDIB_Alpha, 0xff);
- } else {
- ret = pClone->SetAlphaMask(pSrcAlpha);
- }
- }
- if (!ret)
- return nullptr;
-
- CFX_RetainPtr<CFX_DIBSource> holder(this);
- std::unique_ptr<uint32_t, FxFreeDeleter> pal_8bpp;
- if (!ConvertBuffer(dest_format, pClone->GetBuffer(), pClone->GetPitch(),
- m_Width, m_Height, holder, 0, 0, &pal_8bpp)) {
- return nullptr;
- }
- if (pal_8bpp)
- pClone->SetPalette(pal_8bpp.get());
-
- return pClone;
-}
-
bool CFX_DIBitmap::ConvertFormat(FXDIB_Format dest_format) {
FXDIB_Format src_format = GetFormat();
if (dest_format == src_format)
diff --git a/core/fxge/dib/fx_dib_main.cpp b/core/fxge/dib/fx_dib_main.cpp
index 32b7c0b..7ee2ee5 100644
--- a/core/fxge/dib/fx_dib_main.cpp
+++ b/core/fxge/dib/fx_dib_main.cpp
@@ -15,6 +15,7 @@
#include "core/fxcodec/fx_codec.h"
#include "core/fxcrt/cfx_maybe_owned.h"
#include "core/fxge/cfx_gemodule.h"
+#include "core/fxge/dib/cfx_filtereddib.h"
#include "core/fxge/dib/dib_int.h"
#include "core/fxge/ge/cfx_cliprgn.h"
#include "third_party/base/ptr_util.h"
@@ -43,19 +44,6 @@
FXSYS_GetBValue(rgb));
}
-CFX_DIBSource::CFX_DIBSource()
- : m_Width(0), m_Height(0), m_bpp(0), m_AlphaFlag(0), m_Pitch(0) {}
-
-CFX_DIBSource::~CFX_DIBSource() {}
-
-uint8_t* CFX_DIBSource::GetBuffer() const {
- return nullptr;
-}
-
-bool CFX_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const {
- return false;
-}
-
CFX_DIBitmap::CFX_DIBitmap() {
m_bExtBuf = false;
m_pBuffer = nullptr;
@@ -167,131 +155,6 @@
m_Pitch = pSrcBitmap->m_Pitch;
}
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::Clone(const FX_RECT* pClip) const {
- FX_RECT rect(0, 0, m_Width, m_Height);
- if (pClip) {
- rect.Intersect(*pClip);
- if (rect.IsEmpty())
- return nullptr;
- }
- auto pNewBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
- if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat()))
- return nullptr;
-
- pNewBitmap->SetPalette(m_pPalette.get());
- pNewBitmap->SetAlphaMask(m_pAlphaMask, pClip);
- if (GetBPP() == 1 && rect.left % 8 != 0) {
- int left_shift = rect.left % 32;
- int right_shift = 32 - left_shift;
- int dword_count = pNewBitmap->m_Pitch / 4;
- for (int row = rect.top; row < rect.bottom; row++) {
- uint32_t* src_scan = (uint32_t*)GetScanline(row) + rect.left / 32;
- uint32_t* dest_scan = (uint32_t*)pNewBitmap->GetScanline(row - rect.top);
- for (int i = 0; i < dword_count; i++) {
- dest_scan[i] =
- (src_scan[i] << left_shift) | (src_scan[i + 1] >> right_shift);
- }
- }
- } else {
- int copy_len = (pNewBitmap->GetWidth() * pNewBitmap->GetBPP() + 7) / 8;
- if (m_Pitch < (uint32_t)copy_len)
- copy_len = m_Pitch;
-
- for (int row = rect.top; row < rect.bottom; row++) {
- const uint8_t* src_scan = GetScanline(row) + rect.left * m_bpp / 8;
- uint8_t* dest_scan = (uint8_t*)pNewBitmap->GetScanline(row - rect.top);
- FXSYS_memcpy(dest_scan, src_scan, copy_len);
- }
- }
- return pNewBitmap;
-}
-
-void CFX_DIBSource::BuildPalette() {
- if (m_pPalette)
- return;
-
- if (GetBPP() == 1) {
- m_pPalette.reset(FX_Alloc(uint32_t, 2));
- if (IsCmykImage()) {
- m_pPalette.get()[0] = 0xff;
- m_pPalette.get()[1] = 0;
- } else {
- m_pPalette.get()[0] = 0xff000000;
- m_pPalette.get()[1] = 0xffffffff;
- }
- } else if (GetBPP() == 8) {
- m_pPalette.reset(FX_Alloc(uint32_t, 256));
- if (IsCmykImage()) {
- for (int i = 0; i < 256; i++)
- m_pPalette.get()[i] = 0xff - i;
- } else {
- for (int i = 0; i < 256; i++)
- m_pPalette.get()[i] = 0xff000000 | (i * 0x10101);
- }
- }
-}
-
-bool CFX_DIBSource::BuildAlphaMask() {
- if (m_pAlphaMask)
- return true;
-
- m_pAlphaMask = pdfium::MakeRetain<CFX_DIBitmap>();
- if (!m_pAlphaMask->Create(m_Width, m_Height, FXDIB_8bppMask)) {
- m_pAlphaMask = nullptr;
- return false;
- }
- FXSYS_memset(m_pAlphaMask->GetBuffer(), 0xff,
- m_pAlphaMask->GetHeight() * m_pAlphaMask->GetPitch());
- return true;
-}
-
-uint32_t CFX_DIBSource::GetPaletteEntry(int index) const {
- ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
- if (m_pPalette) {
- return m_pPalette.get()[index];
- }
- if (IsCmykImage()) {
- if (GetBPP() == 1) {
- return index ? 0 : 0xff;
- }
- return 0xff - index;
- }
- if (GetBPP() == 1) {
- return index ? 0xffffffff : 0xff000000;
- }
- return index * 0x10101 | 0xff000000;
-}
-
-void CFX_DIBSource::SetPaletteEntry(int index, uint32_t color) {
- ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
- if (!m_pPalette) {
- BuildPalette();
- }
- m_pPalette.get()[index] = color;
-}
-
-int CFX_DIBSource::FindPalette(uint32_t color) const {
- ASSERT((GetBPP() == 1 || GetBPP() == 8) && !IsAlphaMask());
- if (!m_pPalette) {
- if (IsCmykImage()) {
- if (GetBPP() == 1) {
- return ((uint8_t)color == 0xff) ? 0 : 1;
- }
- return 0xff - (uint8_t)color;
- }
- if (GetBPP() == 1) {
- return ((uint8_t)color == 0xff) ? 1 : 0;
- }
- return (uint8_t)color;
- }
- int palsize = (1 << GetBPP());
- for (int i = 0; i < palsize; i++)
- if (m_pPalette.get()[i] == color) {
- return i;
- }
- return -1;
-}
-
void CFX_DIBitmap::Clear(uint32_t color) {
if (!m_pBuffer) {
return;
@@ -354,44 +217,6 @@
}
}
-void CFX_DIBSource::GetOverlapRect(int& dest_left,
- int& dest_top,
- int& width,
- int& height,
- int src_width,
- int src_height,
- int& src_left,
- int& src_top,
- const CFX_ClipRgn* pClipRgn) {
- if (width == 0 || height == 0) {
- return;
- }
- ASSERT(width > 0 && height > 0);
- if (dest_left > m_Width || dest_top > m_Height) {
- width = 0;
- height = 0;
- return;
- }
- int x_offset = dest_left - src_left;
- int y_offset = dest_top - src_top;
- FX_RECT src_rect(src_left, src_top, src_left + width, src_top + height);
- FX_RECT src_bound(0, 0, src_width, src_height);
- src_rect.Intersect(src_bound);
- FX_RECT dest_rect(src_rect.left + x_offset, src_rect.top + y_offset,
- src_rect.right + x_offset, src_rect.bottom + y_offset);
- FX_RECT dest_bound(0, 0, m_Width, m_Height);
- dest_rect.Intersect(dest_bound);
- if (pClipRgn) {
- dest_rect.Intersect(pClipRgn->GetBox());
- }
- dest_left = dest_rect.left;
- dest_top = dest_rect.top;
- src_left = dest_left - x_offset;
- src_top = dest_top - y_offset;
- width = dest_rect.right - dest_rect.left;
- height = dest_rect.bottom - dest_rect.top;
-}
-
bool CFX_DIBitmap::TransferBitmap(
int dest_left,
int dest_top,
@@ -564,92 +389,6 @@
return true;
}
-void CFX_DIBSource::SetPalette(const uint32_t* pSrc) {
- static const uint32_t kPaletteSize = 256;
- if (!pSrc || GetBPP() > 8) {
- m_pPalette.reset();
- return;
- }
- uint32_t pal_size = 1 << GetBPP();
- if (!m_pPalette)
- m_pPalette.reset(FX_Alloc(uint32_t, pal_size));
- pal_size = std::min(pal_size, kPaletteSize);
- FXSYS_memcpy(m_pPalette.get(), pSrc, pal_size * sizeof(uint32_t));
-}
-
-void CFX_DIBSource::GetPalette(uint32_t* pal, int alpha) const {
- ASSERT(GetBPP() <= 8 && !IsCmykImage());
- if (GetBPP() == 1) {
- pal[0] = ((m_pPalette ? m_pPalette.get()[0] : 0xff000000) & 0xffffff) |
- (alpha << 24);
- pal[1] = ((m_pPalette ? m_pPalette.get()[1] : 0xffffffff) & 0xffffff) |
- (alpha << 24);
- return;
- }
- if (m_pPalette) {
- for (int i = 0; i < 256; i++) {
- pal[i] = (m_pPalette.get()[i] & 0x00ffffff) | (alpha << 24);
- }
- } else {
- for (int i = 0; i < 256; i++) {
- pal[i] = (i * 0x10101) | (alpha << 24);
- }
- }
-}
-
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::CloneAlphaMask(
- const FX_RECT* pClip) const {
- ASSERT(GetFormat() == FXDIB_Argb);
- FX_RECT rect(0, 0, m_Width, m_Height);
- if (pClip) {
- rect.Intersect(*pClip);
- if (rect.IsEmpty())
- return nullptr;
- }
- auto pMask = pdfium::MakeRetain<CFX_DIBitmap>();
- if (!pMask->Create(rect.Width(), rect.Height(), FXDIB_8bppMask))
- return nullptr;
-
- for (int row = rect.top; row < rect.bottom; row++) {
- const uint8_t* src_scan = GetScanline(row) + rect.left * 4 + 3;
- uint8_t* dest_scan =
- const_cast<uint8_t*>(pMask->GetScanline(row - rect.top));
- for (int col = rect.left; col < rect.right; col++) {
- *dest_scan++ = *src_scan;
- src_scan += 4;
- }
- }
- return pMask;
-}
-
-bool CFX_DIBSource::SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask,
- const FX_RECT* pClip) {
- if (!HasAlpha() || GetFormat() == FXDIB_Argb)
- return false;
-
- if (!pAlphaMask) {
- m_pAlphaMask->Clear(0xff000000);
- return true;
- }
- FX_RECT rect(0, 0, pAlphaMask->m_Width, pAlphaMask->m_Height);
- if (pClip) {
- rect.Intersect(*pClip);
- if (rect.IsEmpty() || rect.Width() != m_Width ||
- rect.Height() != m_Height) {
- return false;
- }
- } else {
- if (pAlphaMask->m_Width != m_Width || pAlphaMask->m_Height != m_Height)
- return false;
- }
- for (int row = 0; row < m_Height; row++) {
- FXSYS_memcpy(const_cast<uint8_t*>(m_pAlphaMask->GetScanline(row)),
- pAlphaMask->GetScanline(row + rect.top) + rect.left,
- m_pAlphaMask->m_Pitch);
- }
- return true;
-}
-
const int g_ChannelOffset[] = {0, 2, 1, 0, 0, 1, 2, 3, 3};
bool CFX_DIBitmap::LoadChannel(FXDIB_Channel destChannel,
const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
@@ -1326,78 +1065,6 @@
return true;
}
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::FlipImage(bool bXFlip,
- bool bYFlip) const {
- auto pFlipped = pdfium::MakeRetain<CFX_DIBitmap>();
- if (!pFlipped->Create(m_Width, m_Height, GetFormat()))
- return nullptr;
-
- pFlipped->SetPalette(m_pPalette.get());
- uint8_t* pDestBuffer = pFlipped->GetBuffer();
- int Bpp = m_bpp / 8;
- for (int row = 0; row < m_Height; row++) {
- const uint8_t* src_scan = GetScanline(row);
- uint8_t* dest_scan =
- pDestBuffer + m_Pitch * (bYFlip ? (m_Height - row - 1) : row);
- if (!bXFlip) {
- FXSYS_memcpy(dest_scan, src_scan, m_Pitch);
- continue;
- }
- if (m_bpp == 1) {
- FXSYS_memset(dest_scan, 0, m_Pitch);
- for (int col = 0; col < m_Width; col++)
- if (src_scan[col / 8] & (1 << (7 - col % 8))) {
- int dest_col = m_Width - col - 1;
- dest_scan[dest_col / 8] |= (1 << (7 - dest_col % 8));
- }
- } else {
- dest_scan += (m_Width - 1) * Bpp;
- if (Bpp == 1) {
- for (int col = 0; col < m_Width; col++) {
- *dest_scan = *src_scan;
- dest_scan--;
- src_scan++;
- }
- } else if (Bpp == 3) {
- for (int col = 0; col < m_Width; col++) {
- dest_scan[0] = src_scan[0];
- dest_scan[1] = src_scan[1];
- dest_scan[2] = src_scan[2];
- dest_scan -= 3;
- src_scan += 3;
- }
- } else {
- ASSERT(Bpp == 4);
- for (int col = 0; col < m_Width; col++) {
- *(uint32_t*)dest_scan = *(uint32_t*)src_scan;
- dest_scan -= 4;
- src_scan += 4;
- }
- }
- }
- }
- if (m_pAlphaMask) {
- pDestBuffer = pFlipped->m_pAlphaMask->GetBuffer();
- uint32_t dest_pitch = pFlipped->m_pAlphaMask->GetPitch();
- for (int row = 0; row < m_Height; row++) {
- const uint8_t* src_scan = m_pAlphaMask->GetScanline(row);
- uint8_t* dest_scan =
- pDestBuffer + dest_pitch * (bYFlip ? (m_Height - row - 1) : row);
- if (!bXFlip) {
- FXSYS_memcpy(dest_scan, src_scan, dest_pitch);
- continue;
- }
- dest_scan += (m_Width - 1);
- for (int col = 0; col < m_Width; col++) {
- *dest_scan = *src_scan;
- dest_scan--;
- src_scan++;
- }
- }
- }
- return pFlipped;
-}
-
CFX_DIBExtractor::CFX_DIBExtractor(const CFX_RetainPtr<CFX_DIBSource>& pSrc) {
if (pSrc->GetBuffer()) {
CFX_RetainPtr<CFX_DIBSource> pOldSrc(pSrc);
diff --git a/core/fxge/dib/fx_dib_transform.cpp b/core/fxge/dib/fx_dib_transform.cpp
index 3d8ddf8..72de148 100644
--- a/core/fxge/dib/fx_dib_transform.cpp
+++ b/core/fxge/dib/fx_dib_transform.cpp
@@ -179,105 +179,6 @@
}
};
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::SwapXY(
- bool bXFlip,
- bool bYFlip,
- const FX_RECT* pDestClip) const {
- FX_RECT dest_clip(0, 0, m_Height, m_Width);
- if (pDestClip)
- dest_clip.Intersect(*pDestClip);
- if (dest_clip.IsEmpty())
- return nullptr;
-
- auto pTransBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
- int result_height = dest_clip.Height();
- int result_width = dest_clip.Width();
- if (!pTransBitmap->Create(result_width, result_height, GetFormat()))
- return nullptr;
-
- pTransBitmap->SetPalette(m_pPalette.get());
- int dest_pitch = pTransBitmap->GetPitch();
- uint8_t* dest_buf = pTransBitmap->GetBuffer();
- int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left;
- int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right;
- int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top;
- int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom;
- if (GetBPP() == 1) {
- FXSYS_memset(dest_buf, 0xff, dest_pitch * result_height);
- for (int row = row_start; row < row_end; row++) {
- const uint8_t* src_scan = GetScanline(row);
- int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
- dest_clip.left;
- uint8_t* dest_scan = dest_buf;
- if (bYFlip) {
- dest_scan += (result_height - 1) * dest_pitch;
- }
- int dest_step = bYFlip ? -dest_pitch : dest_pitch;
- for (int col = col_start; col < col_end; col++) {
- if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) {
- dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8));
- }
- dest_scan += dest_step;
- }
- }
- } else {
- int nBytes = GetBPP() / 8;
- int dest_step = bYFlip ? -dest_pitch : dest_pitch;
- if (nBytes == 3) {
- dest_step -= 2;
- }
- for (int row = row_start; row < row_end; row++) {
- int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
- dest_clip.left;
- uint8_t* dest_scan = dest_buf + dest_col * nBytes;
- if (bYFlip) {
- dest_scan += (result_height - 1) * dest_pitch;
- }
- if (nBytes == 4) {
- uint32_t* src_scan = (uint32_t*)GetScanline(row) + col_start;
- for (int col = col_start; col < col_end; col++) {
- *(uint32_t*)dest_scan = *src_scan++;
- dest_scan += dest_step;
- }
- } else {
- const uint8_t* src_scan = GetScanline(row) + col_start * nBytes;
- if (nBytes == 1) {
- for (int col = col_start; col < col_end; col++) {
- *dest_scan = *src_scan++;
- dest_scan += dest_step;
- }
- } else {
- for (int col = col_start; col < col_end; col++) {
- *dest_scan++ = *src_scan++;
- *dest_scan++ = *src_scan++;
- *dest_scan = *src_scan++;
- dest_scan += dest_step;
- }
- }
- }
- }
- }
- if (m_pAlphaMask) {
- dest_pitch = pTransBitmap->m_pAlphaMask->GetPitch();
- dest_buf = pTransBitmap->m_pAlphaMask->GetBuffer();
- int dest_step = bYFlip ? -dest_pitch : dest_pitch;
- for (int row = row_start; row < row_end; row++) {
- int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) -
- dest_clip.left;
- uint8_t* dest_scan = dest_buf + dest_col;
- if (bYFlip) {
- dest_scan += (result_height - 1) * dest_pitch;
- }
- const uint8_t* src_scan = m_pAlphaMask->GetScanline(row) + col_start;
- for (int col = col_start; col < col_end; col++) {
- *dest_scan = *src_scan++;
- dest_scan += dest_step;
- }
- }
- }
- return pTransBitmap;
-}
-
#define FIX16_005 0.05f
FX_RECT FXDIB_SwapClipBox(FX_RECT& clip,
int width,
@@ -303,45 +204,6 @@
return rect;
}
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::TransformTo(
- const CFX_Matrix* pDestMatrix,
- int& result_left,
- int& result_top,
- uint32_t flags,
- const FX_RECT* pDestClip) {
- CFX_RetainPtr<CFX_DIBSource> holder(this);
- CFX_ImageTransformer transformer(holder, pDestMatrix, flags, pDestClip);
- transformer.Start();
- transformer.Continue(nullptr);
- result_left = transformer.result().left;
- result_top = transformer.result().top;
- return transformer.DetachBitmap();
-}
-
-CFX_RetainPtr<CFX_DIBitmap> CFX_DIBSource::StretchTo(int dest_width,
- int dest_height,
- uint32_t flags,
- const FX_RECT* pClip) {
- CFX_RetainPtr<CFX_DIBSource> holder(this);
- FX_RECT clip_rect(0, 0, FXSYS_abs(dest_width), FXSYS_abs(dest_height));
- if (pClip)
- clip_rect.Intersect(*pClip);
-
- if (clip_rect.IsEmpty())
- return nullptr;
-
- if (dest_width == m_Width && dest_height == m_Height)
- return Clone(&clip_rect);
-
- CFX_BitmapStorer storer;
- CFX_ImageStretcher stretcher(&storer, holder, dest_width, dest_height,
- clip_rect, flags);
- if (stretcher.Start())
- stretcher.Continue(nullptr);
-
- return storer.Detach();
-}
-
CFX_ImageTransformer::CFX_ImageTransformer(
const CFX_RetainPtr<CFX_DIBSource>& pSrc,
const CFX_Matrix* pMatrix,
diff --git a/core/fxge/fx_dib.h b/core/fxge/fx_dib.h
index 2208276..85af766 100644
--- a/core/fxge/fx_dib.h
+++ b/core/fxge/fx_dib.h
@@ -13,66 +13,14 @@
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxge/dib/cfx_dibitmap.h"
+#include "core/fxge/dib/cfx_dibsource.h"
#include "third_party/base/stl_util.h"
-enum FXDIB_Format {
- FXDIB_Invalid = 0,
- FXDIB_1bppMask = 0x101,
- FXDIB_1bppRgb = 0x001,
- FXDIB_1bppCmyk = 0x401,
- FXDIB_8bppMask = 0x108,
- FXDIB_8bppRgb = 0x008,
- FXDIB_8bppRgba = 0x208,
- FXDIB_8bppCmyk = 0x408,
- FXDIB_8bppCmyka = 0x608,
- FXDIB_Rgb = 0x018,
- FXDIB_Rgba = 0x218,
- FXDIB_Rgb32 = 0x020,
- FXDIB_Argb = 0x220,
- FXDIB_Cmyk = 0x420,
- FXDIB_Cmyka = 0x620,
-};
-
-enum FXDIB_Channel {
- FXDIB_Red = 1,
- FXDIB_Green,
- FXDIB_Blue,
- FXDIB_Cyan,
- FXDIB_Magenta,
- FXDIB_Yellow,
- FXDIB_Black,
- FXDIB_Alpha
-};
-
-#define FXDIB_DOWNSAMPLE 0x04
-#define FXDIB_INTERPOL 0x20
-#define FXDIB_BICUBIC_INTERPOL 0x80
-#define FXDIB_NOSMOOTH 0x100
-#define FXDIB_BLEND_NORMAL 0
-#define FXDIB_BLEND_MULTIPLY 1
-#define FXDIB_BLEND_SCREEN 2
-#define FXDIB_BLEND_OVERLAY 3
-#define FXDIB_BLEND_DARKEN 4
-#define FXDIB_BLEND_LIGHTEN 5
-
-#define FXDIB_BLEND_COLORDODGE 6
-#define FXDIB_BLEND_COLORBURN 7
-#define FXDIB_BLEND_HARDLIGHT 8
-#define FXDIB_BLEND_SOFTLIGHT 9
-#define FXDIB_BLEND_DIFFERENCE 10
-#define FXDIB_BLEND_EXCLUSION 11
-#define FXDIB_BLEND_NONSEPARABLE 21
-#define FXDIB_BLEND_HUE 21
-#define FXDIB_BLEND_SATURATION 22
-#define FXDIB_BLEND_COLOR 23
-#define FXDIB_BLEND_LUMINOSITY 24
-#define FXDIB_BLEND_UNSUPPORTED -1
typedef uint32_t FX_ARGB;
typedef uint32_t FX_COLORREF;
typedef uint32_t FX_CMYK;
class CFX_ClipRgn;
-class CFX_DIBSource;
-class CFX_DIBitmap;
class CStretchEngine;
#define FXSYS_RGB(r, g, b) ((r) | ((g) << 8) | ((b) << 16))
@@ -169,229 +117,6 @@
int src_top,
std::unique_ptr<uint32_t, FxFreeDeleter>* pal);
-class CFX_DIBSource : public CFX_Retainable {
- public:
- ~CFX_DIBSource() override;
-
- virtual uint8_t* GetBuffer() const;
- virtual const uint8_t* GetScanline(int line) const = 0;
- virtual bool SkipToScanline(int line, IFX_Pause* pPause) const;
- virtual void DownSampleScanline(int line,
- uint8_t* dest_scan,
- int dest_bpp,
- int dest_width,
- bool bFlipX,
- int clip_left,
- int clip_width) const = 0;
-
- int GetWidth() const { return m_Width; }
- int GetHeight() const { return m_Height; }
-
- FXDIB_Format GetFormat() const {
- return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp);
- }
- uint32_t GetPitch() const { return m_Pitch; }
- uint32_t* GetPalette() const { return m_pPalette.get(); }
- int GetBPP() const { return m_bpp; }
-
- // TODO(thestig): Investigate this. Given the possible values of FXDIB_Format,
- // it feels as though this should be implemented as !!(m_AlphaFlag & 1) and
- // IsOpaqueImage() below should never be able to return true.
- bool IsAlphaMask() const { return m_AlphaFlag == 1; }
- bool HasAlpha() const { return !!(m_AlphaFlag & 2); }
- bool IsOpaqueImage() const { return !(m_AlphaFlag & 3); }
- bool IsCmykImage() const { return !!(m_AlphaFlag & 4); }
-
- int GetPaletteSize() const {
- return IsAlphaMask() ? 0 : (m_bpp == 1 ? 2 : (m_bpp == 8 ? 256 : 0));
- }
-
- uint32_t GetPaletteEntry(int index) const;
-
- void SetPaletteEntry(int index, uint32_t color);
- uint32_t GetPaletteArgb(int index) const { return GetPaletteEntry(index); }
- void SetPaletteArgb(int index, uint32_t color) {
- SetPaletteEntry(index, color);
- }
-
- // Copies into internally-owned palette.
- void SetPalette(const uint32_t* pSrcPal);
-
- CFX_RetainPtr<CFX_DIBitmap> Clone(const FX_RECT* pClip = nullptr) const;
- CFX_RetainPtr<CFX_DIBitmap> CloneConvert(FXDIB_Format format);
- CFX_RetainPtr<CFX_DIBitmap> StretchTo(int dest_width,
- int dest_height,
- uint32_t flags = 0,
- const FX_RECT* pClip = nullptr);
- CFX_RetainPtr<CFX_DIBitmap> TransformTo(const CFX_Matrix* pMatrix,
- int& left,
- int& top,
- uint32_t flags = 0,
- const FX_RECT* pClip = nullptr);
- CFX_RetainPtr<CFX_DIBitmap> SwapXY(bool bXFlip,
- bool bYFlip,
- const FX_RECT* pClip = nullptr) const;
- CFX_RetainPtr<CFX_DIBitmap> FlipImage(bool bXFlip, bool bYFlip) const;
-
- CFX_RetainPtr<CFX_DIBitmap> CloneAlphaMask(
- const FX_RECT* pClip = nullptr) const;
-
- // Copies into internally-owned mask.
- bool SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask,
- const FX_RECT* pClip = nullptr);
-
- void GetOverlapRect(int& dest_left,
- int& dest_top,
- int& width,
- int& height,
- int src_width,
- int src_height,
- int& src_left,
- int& src_top,
- const CFX_ClipRgn* pClipRgn);
-
-#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
- void DebugVerifyBitmapIsPreMultiplied(void* buffer = nullptr) const;
-#endif
-
- CFX_RetainPtr<CFX_DIBitmap> m_pAlphaMask;
-
- protected:
- CFX_DIBSource();
-
- void BuildPalette();
- bool BuildAlphaMask();
- int FindPalette(uint32_t color) const;
- void GetPalette(uint32_t* pal, int alpha) const;
-
- int m_Width;
- int m_Height;
- int m_bpp;
- uint32_t m_AlphaFlag;
- uint32_t m_Pitch;
- // TODO(weili): Use std::vector for this.
- std::unique_ptr<uint32_t, FxFreeDeleter> m_pPalette;
-};
-
-class CFX_DIBitmap : public CFX_DIBSource {
- public:
- template <typename T, typename... Args>
- friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
-
- ~CFX_DIBitmap() override;
-
- bool Create(int width,
- int height,
- FXDIB_Format format,
- uint8_t* pBuffer = nullptr,
- int pitch = 0);
-
- bool Copy(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
-
- // CFX_DIBSource
- uint8_t* GetBuffer() const override;
- const uint8_t* GetScanline(int line) const override;
- void DownSampleScanline(int line,
- uint8_t* dest_scan,
- int dest_bpp,
- int dest_width,
- bool bFlipX,
- int clip_left,
- int clip_width) const override;
-
- void TakeOver(CFX_RetainPtr<CFX_DIBitmap>&& pSrcBitmap);
- bool ConvertFormat(FXDIB_Format format);
- void Clear(uint32_t color);
-
- uint32_t GetPixel(int x, int y) const;
- void SetPixel(int x, int y, uint32_t color);
-
- bool LoadChannel(FXDIB_Channel destChannel,
- const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
- FXDIB_Channel srcChannel);
- bool LoadChannel(FXDIB_Channel destChannel, int value);
-
- bool MultiplyAlpha(int alpha);
- bool MultiplyAlpha(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask);
-
- bool TransferBitmap(int dest_left,
- int dest_top,
- int width,
- int height,
- const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
- int src_left,
- int src_top);
-
- bool CompositeBitmap(int dest_left,
- int dest_top,
- int width,
- int height,
- const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
- int src_left,
- int src_top,
- int blend_type = FXDIB_BLEND_NORMAL,
- const CFX_ClipRgn* pClipRgn = nullptr,
- bool bRgbByteOrder = false,
- void* pIccTransform = nullptr);
-
- bool TransferMask(int dest_left,
- int dest_top,
- int width,
- int height,
- const CFX_RetainPtr<CFX_DIBSource>& pMask,
- uint32_t color,
- int src_left,
- int src_top,
- int alpha_flag = 0,
- void* pIccTransform = nullptr);
-
- bool CompositeMask(int dest_left,
- int dest_top,
- int width,
- int height,
- const CFX_RetainPtr<CFX_DIBSource>& pMask,
- uint32_t color,
- int src_left,
- int src_top,
- int blend_type = FXDIB_BLEND_NORMAL,
- const CFX_ClipRgn* pClipRgn = nullptr,
- bool bRgbByteOrder = false,
- int alpha_flag = 0,
- void* pIccTransform = nullptr);
-
- bool CompositeRect(int dest_left,
- int dest_top,
- int width,
- int height,
- uint32_t color,
- int alpha_flag = 0,
- void* pIccTransform = nullptr);
-
- bool ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
-
-#if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_
- void PreMultiply();
-#endif
-#if defined _SKIA_SUPPORT_PATHS_
- void UnPreMultiply();
-#endif
-
- protected:
- CFX_DIBitmap();
- CFX_DIBitmap(const CFX_DIBitmap& src);
- bool GetGrayData(void* pIccTransform = nullptr);
-
-#if defined _SKIA_SUPPORT_PATHS_
- enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied };
-#endif
-
- uint8_t* m_pBuffer;
-#if defined _SKIA_SUPPORT_PATHS_
- Format m_nFormat;
-#endif
- bool m_bExtBuf;
-};
-
class CFX_DIBExtractor {
public:
explicit CFX_DIBExtractor(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
@@ -403,41 +128,6 @@
CFX_RetainPtr<CFX_DIBitmap> m_pBitmap;
};
-class CFX_FilteredDIB : public CFX_DIBSource {
- public:
- template <typename T, typename... Args>
- friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
-
- ~CFX_FilteredDIB() override;
-
- virtual FXDIB_Format GetDestFormat() = 0;
- virtual uint32_t* GetDestPalette() = 0;
- virtual void TranslateScanline(const uint8_t* src_buf,
- std::vector<uint8_t>* dest_buf) const = 0;
- virtual void TranslateDownSamples(uint8_t* dest_buf,
- const uint8_t* src_buf,
- int pixels,
- int Bpp) const = 0;
-
- void LoadSrc(const CFX_RetainPtr<CFX_DIBSource>& pSrc);
-
- protected:
- CFX_FilteredDIB();
-
- // CFX_DIBSource
- const uint8_t* GetScanline(int line) const override;
- void DownSampleScanline(int line,
- uint8_t* dest_scan,
- int dest_bpp,
- int dest_width,
- bool bFlipX,
- int clip_left,
- int clip_width) const override;
-
- CFX_RetainPtr<CFX_DIBSource> m_pSrc;
- mutable std::vector<uint8_t> m_Scanline;
-};
-
class IFX_ScanlineComposer {
public:
virtual ~IFX_ScanlineComposer() {}
