From 236ce3ba2f274307db9ed49c595e242cd811716c Mon Sep 17 00:00:00 2001 From: Nicolas Pena Date: Tue, 4 Apr 2017 17:47:50 -0400 Subject: Remove dib_int.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This CL removes dib_int.h by moving CStretchEngine to its own file, other classes to where they are used, and the remaining to fx_dib.h. Change-Id: Ie2d4bb39389737cd631f92b88000ea942608da21 Reviewed-on: https://pdfium-review.googlesource.com/3714 Reviewed-by: Lei Zhang Commit-Queue: Nicolás Peña --- BUILD.gn | 6 +- core/fxge/apple/fx_apple_platform.cpp | 1 - core/fxge/apple/fx_quartz_device.cpp | 1 - core/fxge/dib/cfx_bitmapstorer.cpp | 1 - core/fxge/dib/cfx_dibitmap.cpp | 1 - core/fxge/dib/cfx_imagerenderer.cpp | 1 - core/fxge/dib/cfx_imagestretcher.cpp | 2 +- core/fxge/dib/cfx_imagetransformer.cpp | 26 + core/fxge/dib/cfx_imagetransformer.h | 1 - core/fxge/dib/cstretchengine.cpp | 830 +++++++++++++++++++++++++++++ core/fxge/dib/cstretchengine.h | 81 +++ core/fxge/dib/cstretchengine_unittest.cpp | 32 ++ core/fxge/dib/dib_int.h | 116 ----- core/fxge/dib/fx_dib_engine.cpp | 835 ------------------------------ core/fxge/dib/fx_dib_engine_unittest.cpp | 31 -- core/fxge/dib/fx_dib_main.cpp | 1 - core/fxge/fx_dib.h | 16 +- core/fxge/win32/fx_win32_device.cpp | 2 +- core/fxge/win32/fx_win32_print.cpp | 2 +- 19 files changed, 990 insertions(+), 996 deletions(-) create mode 100644 core/fxge/dib/cstretchengine.cpp create mode 100644 core/fxge/dib/cstretchengine.h create mode 100644 core/fxge/dib/cstretchengine_unittest.cpp delete mode 100644 core/fxge/dib/dib_int.h delete mode 100644 core/fxge/dib/fx_dib_engine.cpp delete mode 100644 core/fxge/dib/fx_dib_engine_unittest.cpp diff --git a/BUILD.gn b/BUILD.gn index 961a5108d9..20fb7a9ba7 100644 --- a/BUILD.gn +++ b/BUILD.gn @@ -884,8 +884,8 @@ static_library("fxge") { "core/fxge/dib/cfx_imagetransformer.h", "core/fxge/dib/cfx_scanlinecompositor.cpp", "core/fxge/dib/cfx_scanlinecompositor.h", - "core/fxge/dib/dib_int.h", - "core/fxge/dib/fx_dib_engine.cpp", + "core/fxge/dib/cstretchengine.cpp", + "core/fxge/dib/cstretchengine.h", "core/fxge/dib/fx_dib_main.cpp", "core/fxge/dib/ifx_scanlinecomposer.h", "core/fxge/fontdata/chromefontdata/FoxitDingbats.cpp", @@ -1867,7 +1867,7 @@ test("pdfium_unittests") { "core/fxcrt/fx_bidi_unittest.cpp", "core/fxcrt/fx_extension_unittest.cpp", "core/fxcrt/fx_system_unittest.cpp", - "core/fxge/dib/fx_dib_engine_unittest.cpp", + "core/fxge/dib/cstretchengine_unittest.cpp", "fpdfsdk/fpdfdoc_unittest.cpp", "fpdfsdk/fpdfeditimg_unittest.cpp", "fpdfsdk/fpdfview_unittest.cpp", diff --git a/core/fxge/apple/fx_apple_platform.cpp b/core/fxge/apple/fx_apple_platform.cpp index 3f7916f07d..818e19e7d4 100644 --- a/core/fxge/apple/fx_apple_platform.cpp +++ b/core/fxge/apple/fx_apple_platform.cpp @@ -14,7 +14,6 @@ #include "core/fxge/cfx_facecache.h" #include "core/fxge/cfx_gemodule.h" #include "core/fxge/cfx_renderdevice.h" -#include "core/fxge/dib/dib_int.h" #include "core/fxge/fx_freetype.h" #include "core/fxge/ge/cfx_cliprgn.h" #include "core/fxge/ge/fx_text_int.h" diff --git a/core/fxge/apple/fx_quartz_device.cpp b/core/fxge/apple/fx_quartz_device.cpp index ded8036047..eef0e0cd88 100644 --- a/core/fxge/apple/fx_quartz_device.cpp +++ b/core/fxge/apple/fx_quartz_device.cpp @@ -15,7 +15,6 @@ #include "core/fxge/cfx_graphstatedata.h" #include "core/fxge/cfx_pathdata.h" #include "core/fxge/cfx_renderdevice.h" -#include "core/fxge/dib/dib_int.h" #include "core/fxge/fx_freetype.h" #include "core/fxge/ge/fx_text_int.h" #include "third_party/base/ptr_util.h" diff --git a/core/fxge/dib/cfx_bitmapstorer.cpp b/core/fxge/dib/cfx_bitmapstorer.cpp index 4e1cb3bc38..1e09708098 100644 --- a/core/fxge/dib/cfx_bitmapstorer.cpp +++ b/core/fxge/dib/cfx_bitmapstorer.cpp @@ -8,7 +8,6 @@ #include -#include "core/fxge/dib/dib_int.h" #include "third_party/base/ptr_util.h" CFX_BitmapStorer::CFX_BitmapStorer() {} diff --git a/core/fxge/dib/cfx_dibitmap.cpp b/core/fxge/dib/cfx_dibitmap.cpp index 6292a67870..54977a6d23 100644 --- a/core/fxge/dib/cfx_dibitmap.cpp +++ b/core/fxge/dib/cfx_dibitmap.cpp @@ -13,7 +13,6 @@ #include "core/fxcodec/fx_codec.h" #include "core/fxge/cfx_gemodule.h" #include "core/fxge/dib/cfx_scanlinecompositor.h" -#include "core/fxge/dib/dib_int.h" #include "core/fxge/ge/cfx_cliprgn.h" #include "third_party/base/ptr_util.h" diff --git a/core/fxge/dib/cfx_imagerenderer.cpp b/core/fxge/dib/cfx_imagerenderer.cpp index 89eb48f0cb..42c92eda06 100644 --- a/core/fxge/dib/cfx_imagerenderer.cpp +++ b/core/fxge/dib/cfx_imagerenderer.cpp @@ -10,7 +10,6 @@ #include "core/fxge/dib/cfx_imagestretcher.h" #include "core/fxge/dib/cfx_imagetransformer.h" -#include "core/fxge/dib/dib_int.h" #include "core/fxge/ge/cfx_cliprgn.h" #include "third_party/base/ptr_util.h" diff --git a/core/fxge/dib/cfx_imagestretcher.cpp b/core/fxge/dib/cfx_imagestretcher.cpp index 94c107b4a3..f52a62d529 100644 --- a/core/fxge/dib/cfx_imagestretcher.cpp +++ b/core/fxge/dib/cfx_imagestretcher.cpp @@ -10,7 +10,7 @@ #include "core/fxge/dib/cfx_dibitmap.h" #include "core/fxge/dib/cfx_dibsource.h" -#include "core/fxge/dib/dib_int.h" +#include "core/fxge/dib/cstretchengine.h" #include "core/fxge/fx_dib.h" #include "third_party/base/ptr_util.h" diff --git a/core/fxge/dib/cfx_imagetransformer.cpp b/core/fxge/dib/cfx_imagetransformer.cpp index 65f6bc8ec9..c5fb467ad8 100644 --- a/core/fxge/dib/cfx_imagetransformer.cpp +++ b/core/fxge/dib/cfx_imagetransformer.cpp @@ -115,6 +115,32 @@ FXDIB_Format GetTransformedFormat(const CFX_RetainPtr& pDrc) { return format; } +class CPDF_FixedMatrix { + public: + CPDF_FixedMatrix(const CFX_Matrix& src, int bits) { + base = 1 << bits; + a = FXSYS_round(src.a * base); + b = FXSYS_round(src.b * base); + c = FXSYS_round(src.c * base); + d = FXSYS_round(src.d * base); + e = FXSYS_round(src.e * base); + f = FXSYS_round(src.f * base); + } + + inline void Transform(int x, int y, int& x1, int& y1) { + x1 = (a * x + c * y + e + base / 2) / base; + y1 = (b * x + d * y + f + base / 2) / base; + } + + int a; + int b; + int c; + int d; + int e; + int f; + int base; +}; + class CFX_BilinearMatrix : public CPDF_FixedMatrix { public: CFX_BilinearMatrix(const CFX_Matrix& src, int bits) diff --git a/core/fxge/dib/cfx_imagetransformer.h b/core/fxge/dib/cfx_imagetransformer.h index 1354c9099a..52aca9792e 100644 --- a/core/fxge/dib/cfx_imagetransformer.h +++ b/core/fxge/dib/cfx_imagetransformer.h @@ -14,7 +14,6 @@ #include "core/fxge/dib/cfx_bitmapstorer.h" #include "core/fxge/dib/cfx_dibitmap.h" #include "core/fxge/dib/cfx_dibsource.h" -#include "core/fxge/dib/dib_int.h" class CFX_ImageStretcher; diff --git a/core/fxge/dib/cstretchengine.cpp b/core/fxge/dib/cstretchengine.cpp new file mode 100644 index 0000000000..0025331486 --- /dev/null +++ b/core/fxge/dib/cstretchengine.cpp @@ -0,0 +1,830 @@ +// 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/cstretchengine.h" + +#include "core/fxge/dib/cfx_dibitmap.h" +#include "core/fxge/dib/cfx_dibsource.h" +#include "core/fxge/dib/ifx_scanlinecomposer.h" +#include "core/fxge/fx_dib.h" + +CStretchEngine::CWeightTable::CWeightTable() + : m_DestMin(0), + m_ItemSize(0), + m_pWeightTables(nullptr), + m_dwWeightTablesSize(0) {} + +CStretchEngine::CWeightTable::~CWeightTable() { + FX_Free(m_pWeightTables); +} + +size_t CStretchEngine::CWeightTable::GetPixelWeightSize() const { + return m_ItemSize / sizeof(int) - 2; +} + +bool CStretchEngine::CWeightTable::Calc(int dest_len, + int dest_min, + int dest_max, + int src_len, + int src_min, + int src_max, + int flags) { + FX_Free(m_pWeightTables); + m_pWeightTables = nullptr; + m_dwWeightTablesSize = 0; + const double scale = (float)src_len / (float)dest_len; + const double base = dest_len < 0 ? (float)(src_len) : 0; + const int ext_size = flags & FXDIB_BICUBIC_INTERPOL ? 3 : 1; + m_ItemSize = sizeof(int) * 2 + + (int)(sizeof(int) * (ceil(fabs((float)scale)) + ext_size)); + m_DestMin = dest_min; + if ((dest_max - dest_min) > (int)((1U << 30) - 4) / m_ItemSize) + return false; + + m_dwWeightTablesSize = (dest_max - dest_min) * m_ItemSize + 4; + m_pWeightTables = FX_TryAlloc(uint8_t, m_dwWeightTablesSize); + if (!m_pWeightTables) + return false; + + if ((flags & FXDIB_NOSMOOTH) != 0 || fabs((float)scale) < 1.0f) { + for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { + PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); + double src_pos = dest_pixel * scale + scale / 2 + base; + if (flags & FXDIB_INTERPOL) { + pixel_weights.m_SrcStart = (int)floor((float)src_pos - 1.0f / 2); + pixel_weights.m_SrcEnd = (int)floor((float)src_pos + 1.0f / 2); + if (pixel_weights.m_SrcStart < src_min) { + pixel_weights.m_SrcStart = src_min; + } + if (pixel_weights.m_SrcEnd >= src_max) { + pixel_weights.m_SrcEnd = src_max - 1; + } + if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { + pixel_weights.m_Weights[0] = 65536; + } else { + pixel_weights.m_Weights[1] = FXSYS_round( + (float)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536); + pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; + } + } else if (flags & FXDIB_BICUBIC_INTERPOL) { + pixel_weights.m_SrcStart = (int)floor((float)src_pos - 1.0f / 2); + pixel_weights.m_SrcEnd = (int)floor((float)src_pos + 1.0f / 2); + int start = pixel_weights.m_SrcStart - 1; + int end = pixel_weights.m_SrcEnd + 1; + if (start < src_min) { + start = src_min; + } + if (end >= src_max) { + end = src_max - 1; + } + if (pixel_weights.m_SrcStart < src_min) { + src_pos += src_min - pixel_weights.m_SrcStart; + pixel_weights.m_SrcStart = src_min; + } + if (pixel_weights.m_SrcEnd >= src_max) { + pixel_weights.m_SrcEnd = src_max - 1; + } + int weight; + weight = FXSYS_round( + (float)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 256); + if (start == end) { + pixel_weights.m_Weights[0] = + (SDP_Table[256 + weight] + SDP_Table[weight] + + SDP_Table[256 - weight] + SDP_Table[512 - weight]) + << 8; + } else if ((start == pixel_weights.m_SrcStart && + (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd || + end == pixel_weights.m_SrcEnd) && + start < end) || + (start < pixel_weights.m_SrcStart && + pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd && + end == pixel_weights.m_SrcEnd)) { + if (start < pixel_weights.m_SrcStart) { + pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; + pixel_weights.m_Weights[1] = + (SDP_Table[weight] + SDP_Table[256 - weight] + + SDP_Table[512 - weight]) + << 8; + } else { + if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { + pixel_weights.m_Weights[0] = + (SDP_Table[256 + weight] + SDP_Table[weight] + + SDP_Table[256 - weight]) + << 8; + pixel_weights.m_Weights[1] = SDP_Table[512 - weight] << 8; + } else { + pixel_weights.m_Weights[0] = + (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; + pixel_weights.m_Weights[1] = + (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; + } + } + if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { + pixel_weights.m_SrcEnd = end; + } + if (start < pixel_weights.m_SrcStart) { + pixel_weights.m_SrcStart = start; + } + } else if (start == pixel_weights.m_SrcStart && + start < pixel_weights.m_SrcEnd && + pixel_weights.m_SrcEnd < end) { + pixel_weights.m_Weights[0] = + (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; + pixel_weights.m_Weights[1] = SDP_Table[256 - weight] << 8; + pixel_weights.m_Weights[2] = SDP_Table[512 - weight] << 8; + pixel_weights.m_SrcEnd = end; + } else if (start < pixel_weights.m_SrcStart && + pixel_weights.m_SrcStart < pixel_weights.m_SrcEnd && + pixel_weights.m_SrcEnd == end) { + pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; + pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; + pixel_weights.m_Weights[2] = + (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; + pixel_weights.m_SrcStart = start; + } else { + pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; + pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; + pixel_weights.m_Weights[2] = SDP_Table[256 - weight] << 8; + pixel_weights.m_Weights[3] = SDP_Table[512 - weight] << 8; + pixel_weights.m_SrcStart = start; + pixel_weights.m_SrcEnd = end; + } + } else { + pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = + (int)floor((float)src_pos); + if (pixel_weights.m_SrcStart < src_min) { + pixel_weights.m_SrcStart = src_min; + } + if (pixel_weights.m_SrcEnd >= src_max) { + pixel_weights.m_SrcEnd = src_max - 1; + } + pixel_weights.m_Weights[0] = 65536; + } + } + return true; + } + + for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { + PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); + double src_start = dest_pixel * scale + base; + double src_end = src_start + scale; + int start_i, end_i; + if (src_start < src_end) { + start_i = (int)floor((float)src_start); + end_i = (int)ceil((float)src_end); + } else { + start_i = (int)floor((float)src_end); + end_i = (int)ceil((float)src_start); + } + if (start_i < src_min) { + start_i = src_min; + } + if (end_i >= src_max) { + end_i = src_max - 1; + } + if (start_i > end_i) { + if (start_i >= src_max) { + start_i = src_max - 1; + } + pixel_weights.m_SrcStart = start_i; + pixel_weights.m_SrcEnd = start_i; + continue; + } + pixel_weights.m_SrcStart = start_i; + pixel_weights.m_SrcEnd = end_i; + for (int j = start_i; j <= end_i; j++) { + double dest_start = ((float)j - base) / scale; + double dest_end = ((float)(j + 1) - base) / scale; + if (dest_start > dest_end) { + double temp = dest_start; + dest_start = dest_end; + dest_end = temp; + } + double area_start = + dest_start > (float)(dest_pixel) ? dest_start : (float)(dest_pixel); + double area_end = dest_end > (float)(dest_pixel + 1) + ? (float)(dest_pixel + 1) + : dest_end; + double weight = area_start >= area_end ? 0.0f : area_end - area_start; + if (weight == 0 && j == end_i) { + pixel_weights.m_SrcEnd--; + break; + } + size_t idx = j - start_i; + if (idx >= GetPixelWeightSize()) + return false; + pixel_weights.m_Weights[idx] = FXSYS_round((float)(weight * 65536)); + } + } + return true; +} + +PixelWeight* CStretchEngine::CWeightTable::GetPixelWeight(int pixel) const { + ASSERT(pixel >= m_DestMin); + return reinterpret_cast(m_pWeightTables + + (pixel - m_DestMin) * m_ItemSize); +} + +int* CStretchEngine::CWeightTable::GetValueFromPixelWeight(PixelWeight* pWeight, + int index) const { + if (index < pWeight->m_SrcStart) + return nullptr; + + size_t idx = index - pWeight->m_SrcStart; + return idx < GetPixelWeightSize() ? &pWeight->m_Weights[idx] : nullptr; +} + +CStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap, + FXDIB_Format dest_format, + int dest_width, + int dest_height, + const FX_RECT& clip_rect, + const CFX_RetainPtr& pSrcBitmap, + int flags) { + m_State = 0; + m_DestFormat = dest_format; + m_DestBpp = dest_format & 0xff; + m_SrcBpp = pSrcBitmap->GetFormat() & 0xff; + m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200; + m_pSrcPalette = pSrcBitmap->GetPalette(); + m_pDestBitmap = pDestBitmap; + m_DestWidth = dest_width; + m_DestHeight = dest_height; + m_pInterBuf = nullptr; + m_pExtraAlphaBuf = nullptr; + m_pDestMaskScanline = nullptr; + m_DestClip = clip_rect; + uint32_t size = clip_rect.Width(); + if (size && m_DestBpp > (int)(INT_MAX / size)) { + return; + } + size *= m_DestBpp; + if (size > INT_MAX - 31) { + return; + } + size += 31; + size = size / 32 * 4; + m_pDestScanline = FX_TryAlloc(uint8_t, size); + if (!m_pDestScanline) { + return; + } + if (dest_format == FXDIB_Rgb32) { + memset(m_pDestScanline, 255, size); + } + m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4; + m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4; + m_pInterBuf = nullptr; + m_pSource = pSrcBitmap; + m_SrcWidth = pSrcBitmap->GetWidth(); + m_SrcHeight = pSrcBitmap->GetHeight(); + m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4; + if ((flags & FXDIB_NOSMOOTH) == 0) { + bool bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL; + if (!bInterpol && abs(dest_width) != 0 && + abs(dest_height) / 8 < static_cast(m_SrcWidth) * + m_SrcHeight / abs(dest_width)) { + flags = FXDIB_INTERPOL; + } + m_Flags = flags; + } else { + m_Flags = FXDIB_NOSMOOTH; + if (flags & FXDIB_DOWNSAMPLE) { + m_Flags |= FXDIB_DOWNSAMPLE; + } + } + double scale_x = (float)m_SrcWidth / (float)m_DestWidth; + double scale_y = (float)m_SrcHeight / (float)m_DestHeight; + double base_x = m_DestWidth > 0 ? 0.0f : (float)(m_DestWidth); + double base_y = m_DestHeight > 0 ? 0.0f : (float)(m_DestHeight); + double src_left = scale_x * ((float)(clip_rect.left) + base_x); + double src_right = scale_x * ((float)(clip_rect.right) + base_x); + double src_top = scale_y * ((float)(clip_rect.top) + base_y); + double src_bottom = scale_y * ((float)(clip_rect.bottom) + base_y); + if (src_left > src_right) { + double temp = src_left; + src_left = src_right; + src_right = temp; + } + if (src_top > src_bottom) { + double temp = src_top; + src_top = src_bottom; + src_bottom = temp; + } + m_SrcClip.left = (int)floor((float)src_left); + m_SrcClip.right = (int)ceil((float)src_right); + m_SrcClip.top = (int)floor((float)src_top); + m_SrcClip.bottom = (int)ceil((float)src_bottom); + FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight); + m_SrcClip.Intersect(src_rect); + if (m_SrcBpp == 1) { + if (m_DestBpp == 8) { + m_TransMethod = 1; + } else { + m_TransMethod = 2; + } + } else if (m_SrcBpp == 8) { + if (m_DestBpp == 8) { + if (!m_bHasAlpha) { + m_TransMethod = 3; + } else { + m_TransMethod = 4; + } + } else { + if (!m_bHasAlpha) { + m_TransMethod = 5; + } else { + m_TransMethod = 6; + } + } + } else { + if (!m_bHasAlpha) { + m_TransMethod = 7; + } else { + m_TransMethod = 8; + } + } +} + +CStretchEngine::~CStretchEngine() { + FX_Free(m_pDestScanline); + FX_Free(m_pInterBuf); + FX_Free(m_pExtraAlphaBuf); + FX_Free(m_pDestMaskScanline); +} + +bool CStretchEngine::Continue(IFX_Pause* pPause) { + while (m_State == 1) { + if (ContinueStretchHorz(pPause)) { + return true; + } + m_State = 2; + StretchVert(); + } + return false; +} + +bool CStretchEngine::StartStretchHorz() { + if (m_DestWidth == 0 || m_InterPitch == 0 || !m_pDestScanline) + return false; + + if (m_SrcClip.Height() == 0 || + m_SrcClip.Height() > (1 << 29) / m_InterPitch) { + return false; + } + + m_pInterBuf = FX_TryAlloc(unsigned char, m_SrcClip.Height() * m_InterPitch); + if (!m_pInterBuf) + return false; + + if (m_pSource && m_bHasAlpha && m_pSource->m_pAlphaMask) { + m_pExtraAlphaBuf = + FX_Alloc2D(unsigned char, m_SrcClip.Height(), m_ExtraMaskPitch); + uint32_t size = (m_DestClip.Width() * 8 + 31) / 32 * 4; + m_pDestMaskScanline = FX_TryAlloc(unsigned char, size); + if (!m_pDestMaskScanline) + return false; + } + bool ret = + m_WeightTable.Calc(m_DestWidth, m_DestClip.left, m_DestClip.right, + m_SrcWidth, m_SrcClip.left, m_SrcClip.right, m_Flags); + if (!ret) + return false; + + m_CurRow = m_SrcClip.top; + m_State = 1; + return true; +} + +bool CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause) { + if (!m_DestWidth) + return false; + + if (m_pSource->SkipToScanline(m_CurRow, pPause)) + return true; + + int Bpp = m_DestBpp / 8; + static const int kStrechPauseRows = 10; + int rows_to_go = kStrechPauseRows; + for (; m_CurRow < m_SrcClip.bottom; m_CurRow++) { + if (rows_to_go == 0) { + if (pPause && pPause->NeedToPauseNow()) + return true; + + rows_to_go = kStrechPauseRows; + } + + const uint8_t* src_scan = m_pSource->GetScanline(m_CurRow); + uint8_t* dest_scan = + m_pInterBuf + (m_CurRow - m_SrcClip.top) * m_InterPitch; + const uint8_t* src_scan_mask = nullptr; + uint8_t* dest_scan_mask = nullptr; + if (m_pExtraAlphaBuf) { + src_scan_mask = m_pSource->m_pAlphaMask->GetScanline(m_CurRow); + dest_scan_mask = + m_pExtraAlphaBuf + (m_CurRow - m_SrcClip.top) * m_ExtraMaskPitch; + } + switch (m_TransMethod) { + case 1: + case 2: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_a = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + if (src_scan[j / 8] & (1 << (7 - j % 8))) { + dest_a += pixel_weight * 255; + } + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; + } + *dest_scan++ = (uint8_t)(dest_a >> 16); + } + break; + } + case 3: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_a = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + dest_a += pixel_weight * src_scan[j]; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; + } + *dest_scan++ = (uint8_t)(dest_a >> 16); + } + break; + } + case 4: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_a = 0, dest_r = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + pixel_weight = pixel_weight * src_scan_mask[j] / 255; + dest_r += pixel_weight * src_scan[j]; + dest_a += pixel_weight; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_r = dest_r < 0 ? 0 : dest_r > 16711680 ? 16711680 : dest_r; + dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; + } + *dest_scan++ = (uint8_t)(dest_r >> 16); + *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); + } + break; + } + case 5: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; + if (m_DestFormat == FXDIB_Rgb) { + dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); + dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); + dest_b_c += pixel_weight * (uint8_t)argb_cmyk; + } else { + dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); + dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); + dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); + } + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + } + *dest_scan++ = (uint8_t)(dest_b_c >> 16); + *dest_scan++ = (uint8_t)(dest_g_m >> 16); + *dest_scan++ = (uint8_t)(dest_r_y >> 16); + } + break; + } + case 6: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + pixel_weight = pixel_weight * src_scan_mask[j] / 255; + unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; + if (m_DestFormat == FXDIB_Rgba) { + dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); + dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); + dest_b_c += pixel_weight * (uint8_t)argb_cmyk; + } else { + dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); + dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); + dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); + } + dest_a += pixel_weight; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; + } + *dest_scan++ = (uint8_t)(dest_b_c >> 16); + *dest_scan++ = (uint8_t)(dest_g_m >> 16); + *dest_scan++ = (uint8_t)(dest_r_y >> 16); + *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); + } + break; + } + case 7: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + const uint8_t* src_pixel = src_scan + j * Bpp; + dest_b_c += pixel_weight * (*src_pixel++); + dest_g_m += pixel_weight * (*src_pixel++); + dest_r_y += pixel_weight * (*src_pixel); + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + } + *dest_scan++ = (uint8_t)((dest_b_c) >> 16); + *dest_scan++ = (uint8_t)((dest_g_m) >> 16); + *dest_scan++ = (uint8_t)((dest_r_y) >> 16); + dest_scan += Bpp - 3; + } + break; + } + case 8: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); + int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = + m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return false; + + int pixel_weight = *pWeight; + const uint8_t* src_pixel = src_scan + j * Bpp; + if (m_DestFormat == FXDIB_Argb) { + pixel_weight = pixel_weight * src_pixel[3] / 255; + } else { + pixel_weight = pixel_weight * src_scan_mask[j] / 255; + } + dest_b_c += pixel_weight * (*src_pixel++); + dest_g_m += pixel_weight * (*src_pixel++); + dest_r_y += pixel_weight * (*src_pixel); + dest_a += pixel_weight; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; + } + *dest_scan++ = (uint8_t)((dest_b_c) >> 16); + *dest_scan++ = (uint8_t)((dest_g_m) >> 16); + *dest_scan++ = (uint8_t)((dest_r_y) >> 16); + if (m_DestFormat == FXDIB_Argb) { + *dest_scan = (uint8_t)((dest_a * 255) >> 16); + } + if (dest_scan_mask) { + *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); + } + dest_scan += Bpp - 3; + } + break; + } + } + rows_to_go--; + } + return false; +} + +void CStretchEngine::StretchVert() { + if (m_DestHeight == 0) + return; + + CWeightTable table; + bool ret = table.Calc(m_DestHeight, m_DestClip.top, m_DestClip.bottom, + m_SrcHeight, m_SrcClip.top, m_SrcClip.bottom, m_Flags); + if (!ret) + return; + + const int DestBpp = m_DestBpp / 8; + for (int row = m_DestClip.top; row < m_DestClip.bottom; row++) { + unsigned char* dest_scan = m_pDestScanline; + unsigned char* dest_scan_mask = m_pDestMaskScanline; + PixelWeight* pPixelWeights = table.GetPixelWeight(row); + switch (m_TransMethod) { + case 1: + case 2: + case 3: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + unsigned char* src_scan = + m_pInterBuf + (col - m_DestClip.left) * DestBpp; + int dest_a = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return; + + int pixel_weight = *pWeight; + dest_a += + pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; + } + *dest_scan = (uint8_t)(dest_a >> 16); + dest_scan += DestBpp; + } + break; + } + case 4: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + unsigned char* src_scan = + m_pInterBuf + (col - m_DestClip.left) * DestBpp; + unsigned char* src_scan_mask = + m_pExtraAlphaBuf + (col - m_DestClip.left); + int dest_a = 0, dest_k = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return; + + int pixel_weight = *pWeight; + dest_k += + pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; + dest_a += pixel_weight * + src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k; + dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; + } + *dest_scan = (uint8_t)(dest_k >> 16); + dest_scan += DestBpp; + *dest_scan_mask++ = (uint8_t)(dest_a >> 16); + } + break; + } + case 5: + case 7: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + unsigned char* src_scan = + m_pInterBuf + (col - m_DestClip.left) * DestBpp; + int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return; + + int pixel_weight = *pWeight; + const uint8_t* src_pixel = + src_scan + (j - m_SrcClip.top) * m_InterPitch; + dest_b_c += pixel_weight * (*src_pixel++); + dest_g_m += pixel_weight * (*src_pixel++); + dest_r_y += pixel_weight * (*src_pixel); + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + } + dest_scan[0] = (uint8_t)((dest_b_c) >> 16); + dest_scan[1] = (uint8_t)((dest_g_m) >> 16); + dest_scan[2] = (uint8_t)((dest_r_y) >> 16); + dest_scan += DestBpp; + } + break; + } + case 6: + case 8: { + for (int col = m_DestClip.left; col < m_DestClip.right; col++) { + unsigned char* src_scan = + m_pInterBuf + (col - m_DestClip.left) * DestBpp; + unsigned char* src_scan_mask = nullptr; + if (m_DestFormat != FXDIB_Argb) { + src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left); + } + int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; + for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; + j++) { + int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); + if (!pWeight) + return; + + int pixel_weight = *pWeight; + const uint8_t* src_pixel = + src_scan + (j - m_SrcClip.top) * m_InterPitch; + int mask_v = 255; + if (src_scan_mask) { + mask_v = src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; + } + dest_b_c += pixel_weight * (*src_pixel++); + dest_g_m += pixel_weight * (*src_pixel++); + dest_r_y += pixel_weight * (*src_pixel); + if (m_DestFormat == FXDIB_Argb) { + dest_a += pixel_weight * (*(src_pixel + 1)); + } else { + dest_a += pixel_weight * mask_v; + } + } + if (m_Flags & FXDIB_BICUBIC_INTERPOL) { + dest_r_y = + dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; + dest_g_m = + dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; + dest_b_c = + dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; + dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; + } + if (dest_a) { + int r = ((uint32_t)dest_r_y) * 255 / dest_a; + int g = ((uint32_t)dest_g_m) * 255 / dest_a; + int b = ((uint32_t)dest_b_c) * 255 / dest_a; + dest_scan[0] = b > 255 ? 255 : b < 0 ? 0 : b; + dest_scan[1] = g > 255 ? 255 : g < 0 ? 0 : g; + dest_scan[2] = r > 255 ? 255 : r < 0 ? 0 : r; + } + if (m_DestFormat == FXDIB_Argb) { + dest_scan[3] = (uint8_t)((dest_a) >> 16); + } else { + *dest_scan_mask = (uint8_t)((dest_a) >> 16); + } + dest_scan += DestBpp; + if (dest_scan_mask) { + dest_scan_mask++; + } + } + break; + } + } + m_pDestBitmap->ComposeScanline(row - m_DestClip.top, m_pDestScanline, + m_pDestMaskScanline); + } +} diff --git a/core/fxge/dib/cstretchengine.h b/core/fxge/dib/cstretchengine.h new file mode 100644 index 0000000000..0d9457fb9d --- /dev/null +++ b/core/fxge/dib/cstretchengine.h @@ -0,0 +1,81 @@ +// 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_CSTRETCHENGINE_H_ +#define CORE_FXGE_DIB_CSTRETCHENGINE_H_ + +#include "core/fxcrt/fx_coordinates.h" +#include "core/fxge/fx_dib.h" + +class IFX_ScanlineComposer; + +class CStretchEngine { + public: + CStretchEngine(IFX_ScanlineComposer* pDestBitmap, + FXDIB_Format dest_format, + int dest_width, + int dest_height, + const FX_RECT& clip_rect, + const CFX_RetainPtr& pSrcBitmap, + int flags); + ~CStretchEngine(); + + bool Continue(IFX_Pause* pPause); + + bool StartStretchHorz(); + bool ContinueStretchHorz(IFX_Pause* pPause); + void StretchVert(); + + class CWeightTable { + public: + CWeightTable(); + ~CWeightTable(); + + bool Calc(int dest_len, + int dest_min, + int dest_max, + int src_len, + int src_min, + int src_max, + int flags); + PixelWeight* GetPixelWeight(int pixel) const; + int* GetValueFromPixelWeight(PixelWeight* pWeight, int index) const; + size_t GetPixelWeightSize() const; + + private: + int m_DestMin; + int m_ItemSize; + uint8_t* m_pWeightTables; + size_t m_dwWeightTablesSize; + }; + + FXDIB_Format m_DestFormat; + int m_DestBpp; + int m_SrcBpp; + int m_bHasAlpha; + IFX_ScanlineComposer* m_pDestBitmap; + int m_DestWidth, m_DestHeight; + FX_RECT m_DestClip; + uint8_t* m_pDestScanline; + uint8_t* m_pDestMaskScanline; + FX_RECT m_SrcClip; + CFX_RetainPtr m_pSource; + uint32_t* m_pSrcPalette; + int m_SrcWidth; + int m_SrcHeight; + int m_SrcPitch; + int m_InterPitch; + int m_ExtraMaskPitch; + uint8_t* m_pInterBuf; + uint8_t* m_pExtraAlphaBuf; + int m_TransMethod; + int m_Flags; + CWeightTable m_WeightTable; + int m_CurRow; + int m_State; +}; + +#endif // CORE_FXGE_DIB_CSTRETCHENGINE_H_ diff --git a/core/fxge/dib/cstretchengine_unittest.cpp b/core/fxge/dib/cstretchengine_unittest.cpp new file mode 100644 index 0000000000..2c7e0342de --- /dev/null +++ b/core/fxge/dib/cstretchengine_unittest.cpp @@ -0,0 +1,32 @@ +// 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. + +#include "core/fxge/dib/cstretchengine.h" + +#include +#include + +#include "core/fpdfapi/parser/cpdf_dictionary.h" +#include "core/fpdfapi/parser/cpdf_number.h" +#include "core/fpdfapi/parser/cpdf_stream.h" +#include "core/fpdfapi/render/cpdf_dibsource.h" +#include "core/fxcrt/fx_memory.h" +#include "core/fxge/fx_dib.h" +#include "testing/gtest/include/gtest/gtest.h" +#include "third_party/base/ptr_util.h" + +TEST(CStretchEngine, OverflowInCtor) { + FX_RECT clip_rect; + std::unique_ptr dict_obj = + pdfium::MakeUnique(); + dict_obj->SetNewFor("Width", 71000); + dict_obj->SetNewFor("Height", 12500); + std::unique_ptr stream = + pdfium::MakeUnique(nullptr, 0, std::move(dict_obj)); + auto dib_source = pdfium::MakeRetain(); + dib_source->Load(nullptr, stream.get()); + CStretchEngine engine(nullptr, FXDIB_8bppRgb, 500, 500, clip_rect, dib_source, + 0); + EXPECT_EQ(FXDIB_INTERPOL, engine.m_Flags); +} diff --git a/core/fxge/dib/dib_int.h b/core/fxge/dib/dib_int.h deleted file mode 100644 index a898a479a2..0000000000 --- a/core/fxge/dib/dib_int.h +++ /dev/null @@ -1,116 +0,0 @@ -// Copyright 2014 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_DIB_INT_H_ -#define CORE_FXGE_DIB_DIB_INT_H_ - -#include - -#include "core/fxcrt/fx_coordinates.h" -#include "core/fxge/fx_dib.h" - -class IFX_ScanlineComposer; - -extern const int16_t SDP_Table[513]; - -class CPDF_FixedMatrix { - public: - CPDF_FixedMatrix(const CFX_Matrix& src, int bits) { - base = 1 << bits; - a = FXSYS_round(src.a * base); - b = FXSYS_round(src.b * base); - c = FXSYS_round(src.c * base); - d = FXSYS_round(src.d * base); - e = FXSYS_round(src.e * base); - f = FXSYS_round(src.f * base); - } - inline void Transform(int x, int y, int& x1, int& y1) { - x1 = (a * x + c * y + e + base / 2) / base; - y1 = (b * x + d * y + f + base / 2) / base; - } - int a, b, c, d, e, f; - int base; -}; -#define FPDF_HUGE_IMAGE_SIZE 60000000 -struct PixelWeight { - int m_SrcStart; - int m_SrcEnd; - int m_Weights[1]; -}; - -class CWeightTable { - public: - CWeightTable(); - ~CWeightTable(); - - bool Calc(int dest_len, - int dest_min, - int dest_max, - int src_len, - int src_min, - int src_max, - int flags); - PixelWeight* GetPixelWeight(int pixel) const; - int* GetValueFromPixelWeight(PixelWeight* pWeight, int index) const; - size_t GetPixelWeightSize() const; - - private: - int m_DestMin; - int m_ItemSize; - uint8_t* m_pWeightTables; - size_t m_dwWeightTablesSize; -}; - -class CStretchEngine { - public: - CStretchEngine(IFX_ScanlineComposer* pDestBitmap, - FXDIB_Format dest_format, - int dest_width, - int dest_height, - const FX_RECT& clip_rect, - const CFX_RetainPtr& pSrcBitmap, - int flags); - ~CStretchEngine(); - - bool Continue(IFX_Pause* pPause); - - bool StartStretchHorz(); - bool ContinueStretchHorz(IFX_Pause* pPause); - void StretchVert(); - - FXDIB_Format m_DestFormat; - int m_DestBpp; - int m_SrcBpp; - int m_bHasAlpha; - IFX_ScanlineComposer* m_pDestBitmap; - int m_DestWidth, m_DestHeight; - FX_RECT m_DestClip; - uint8_t* m_pDestScanline; - uint8_t* m_pDestMaskScanline; - FX_RECT m_SrcClip; - CFX_RetainPtr m_pSource; - uint32_t* m_pSrcPalette; - int m_SrcWidth; - int m_SrcHeight; - int m_SrcPitch; - int m_InterPitch; - int m_ExtraMaskPitch; - uint8_t* m_pInterBuf; - uint8_t* m_pExtraAlphaBuf; - int m_TransMethod; - int m_Flags; - CWeightTable m_WeightTable; - int m_CurRow; - int m_State; -}; - -FX_RECT FXDIB_SwapClipBox(FX_RECT& clip, - int width, - int height, - bool bFlipX, - bool bFlipY); - -#endif // CORE_FXGE_DIB_DIB_INT_H_ diff --git a/core/fxge/dib/fx_dib_engine.cpp b/core/fxge/dib/fx_dib_engine.cpp deleted file mode 100644 index 3ae0bf9031..0000000000 --- a/core/fxge/dib/fx_dib_engine.cpp +++ /dev/null @@ -1,835 +0,0 @@ -// Copyright 2014 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 - -#include - -#include "core/fxge/dib/cfx_dibitmap.h" -#include "core/fxge/dib/cfx_dibsource.h" -#include "core/fxge/dib/dib_int.h" -#include "core/fxge/dib/ifx_scanlinecomposer.h" -#include "core/fxge/fx_dib.h" -#include "third_party/base/ptr_util.h" -#include "third_party/base/stl_util.h" - -CWeightTable::CWeightTable() - : m_DestMin(0), - m_ItemSize(0), - m_pWeightTables(nullptr), - m_dwWeightTablesSize(0) {} - -CWeightTable::~CWeightTable() { - FX_Free(m_pWeightTables); -} - -size_t CWeightTable::GetPixelWeightSize() const { - return m_ItemSize / sizeof(int) - 2; -} - -bool CWeightTable::Calc(int dest_len, - int dest_min, - int dest_max, - int src_len, - int src_min, - int src_max, - int flags) { - FX_Free(m_pWeightTables); - m_pWeightTables = nullptr; - m_dwWeightTablesSize = 0; - const double scale = (float)src_len / (float)dest_len; - const double base = dest_len < 0 ? (float)(src_len) : 0; - const int ext_size = flags & FXDIB_BICUBIC_INTERPOL ? 3 : 1; - m_ItemSize = sizeof(int) * 2 + - (int)(sizeof(int) * (ceil(fabs((float)scale)) + ext_size)); - m_DestMin = dest_min; - if ((dest_max - dest_min) > (int)((1U << 30) - 4) / m_ItemSize) - return false; - - m_dwWeightTablesSize = (dest_max - dest_min) * m_ItemSize + 4; - m_pWeightTables = FX_TryAlloc(uint8_t, m_dwWeightTablesSize); - if (!m_pWeightTables) - return false; - - if ((flags & FXDIB_NOSMOOTH) != 0 || fabs((float)scale) < 1.0f) { - for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { - PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); - double src_pos = dest_pixel * scale + scale / 2 + base; - if (flags & FXDIB_INTERPOL) { - pixel_weights.m_SrcStart = (int)floor((float)src_pos - 1.0f / 2); - pixel_weights.m_SrcEnd = (int)floor((float)src_pos + 1.0f / 2); - if (pixel_weights.m_SrcStart < src_min) { - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_Weights[0] = 65536; - } else { - pixel_weights.m_Weights[1] = FXSYS_round( - (float)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536); - pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; - } - } else if (flags & FXDIB_BICUBIC_INTERPOL) { - pixel_weights.m_SrcStart = (int)floor((float)src_pos - 1.0f / 2); - pixel_weights.m_SrcEnd = (int)floor((float)src_pos + 1.0f / 2); - int start = pixel_weights.m_SrcStart - 1; - int end = pixel_weights.m_SrcEnd + 1; - if (start < src_min) { - start = src_min; - } - if (end >= src_max) { - end = src_max - 1; - } - if (pixel_weights.m_SrcStart < src_min) { - src_pos += src_min - pixel_weights.m_SrcStart; - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - int weight; - weight = FXSYS_round( - (float)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 256); - if (start == end) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight] + - SDP_Table[256 - weight] + SDP_Table[512 - weight]) - << 8; - } else if ((start == pixel_weights.m_SrcStart && - (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd || - end == pixel_weights.m_SrcEnd) && - start < end) || - (start < pixel_weights.m_SrcStart && - pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd && - end == pixel_weights.m_SrcEnd)) { - if (start < pixel_weights.m_SrcStart) { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = - (SDP_Table[weight] + SDP_Table[256 - weight] + - SDP_Table[512 - weight]) - << 8; - } else { - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight] + - SDP_Table[256 - weight]) - << 8; - pixel_weights.m_Weights[1] = SDP_Table[512 - weight] << 8; - } else { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; - pixel_weights.m_Weights[1] = - (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; - } - } - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_SrcEnd = end; - } - if (start < pixel_weights.m_SrcStart) { - pixel_weights.m_SrcStart = start; - } - } else if (start == pixel_weights.m_SrcStart && - start < pixel_weights.m_SrcEnd && - pixel_weights.m_SrcEnd < end) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; - pixel_weights.m_Weights[1] = SDP_Table[256 - weight] << 8; - pixel_weights.m_Weights[2] = SDP_Table[512 - weight] << 8; - pixel_weights.m_SrcEnd = end; - } else if (start < pixel_weights.m_SrcStart && - pixel_weights.m_SrcStart < pixel_weights.m_SrcEnd && - pixel_weights.m_SrcEnd == end) { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; - pixel_weights.m_Weights[2] = - (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; - pixel_weights.m_SrcStart = start; - } else { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; - pixel_weights.m_Weights[2] = SDP_Table[256 - weight] << 8; - pixel_weights.m_Weights[3] = SDP_Table[512 - weight] << 8; - pixel_weights.m_SrcStart = start; - pixel_weights.m_SrcEnd = end; - } - } else { - pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = - (int)floor((float)src_pos); - if (pixel_weights.m_SrcStart < src_min) { - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - pixel_weights.m_Weights[0] = 65536; - } - } - return true; - } - - for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { - PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); - double src_start = dest_pixel * scale + base; - double src_end = src_start + scale; - int start_i, end_i; - if (src_start < src_end) { - start_i = (int)floor((float)src_start); - end_i = (int)ceil((float)src_end); - } else { - start_i = (int)floor((float)src_end); - end_i = (int)ceil((float)src_start); - } - if (start_i < src_min) { - start_i = src_min; - } - if (end_i >= src_max) { - end_i = src_max - 1; - } - if (start_i > end_i) { - if (start_i >= src_max) { - start_i = src_max - 1; - } - pixel_weights.m_SrcStart = start_i; - pixel_weights.m_SrcEnd = start_i; - continue; - } - pixel_weights.m_SrcStart = start_i; - pixel_weights.m_SrcEnd = end_i; - for (int j = start_i; j <= end_i; j++) { - double dest_start = ((float)j - base) / scale; - double dest_end = ((float)(j + 1) - base) / scale; - if (dest_start > dest_end) { - double temp = dest_start; - dest_start = dest_end; - dest_end = temp; - } - double area_start = - dest_start > (float)(dest_pixel) ? dest_start : (float)(dest_pixel); - double area_end = dest_end > (float)(dest_pixel + 1) - ? (float)(dest_pixel + 1) - : dest_end; - double weight = area_start >= area_end ? 0.0f : area_end - area_start; - if (weight == 0 && j == end_i) { - pixel_weights.m_SrcEnd--; - break; - } - size_t idx = j - start_i; - if (idx >= GetPixelWeightSize()) - return false; - pixel_weights.m_Weights[idx] = FXSYS_round((float)(weight * 65536)); - } - } - return true; -} - -PixelWeight* CWeightTable::GetPixelWeight(int pixel) const { - ASSERT(pixel >= m_DestMin); - return reinterpret_cast(m_pWeightTables + - (pixel - m_DestMin) * m_ItemSize); -} - -int* CWeightTable::GetValueFromPixelWeight(PixelWeight* pWeight, - int index) const { - if (index < pWeight->m_SrcStart) - return nullptr; - - size_t idx = index - pWeight->m_SrcStart; - return idx < GetPixelWeightSize() ? &pWeight->m_Weights[idx] : nullptr; -} - -CStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap, - FXDIB_Format dest_format, - int dest_width, - int dest_height, - const FX_RECT& clip_rect, - const CFX_RetainPtr& pSrcBitmap, - int flags) { - m_State = 0; - m_DestFormat = dest_format; - m_DestBpp = dest_format & 0xff; - m_SrcBpp = pSrcBitmap->GetFormat() & 0xff; - m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200; - m_pSrcPalette = pSrcBitmap->GetPalette(); - m_pDestBitmap = pDestBitmap; - m_DestWidth = dest_width; - m_DestHeight = dest_height; - m_pInterBuf = nullptr; - m_pExtraAlphaBuf = nullptr; - m_pDestMaskScanline = nullptr; - m_DestClip = clip_rect; - uint32_t size = clip_rect.Width(); - if (size && m_DestBpp > (int)(INT_MAX / size)) { - return; - } - size *= m_DestBpp; - if (size > INT_MAX - 31) { - return; - } - size += 31; - size = size / 32 * 4; - m_pDestScanline = FX_TryAlloc(uint8_t, size); - if (!m_pDestScanline) { - return; - } - if (dest_format == FXDIB_Rgb32) { - memset(m_pDestScanline, 255, size); - } - m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4; - m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4; - m_pInterBuf = nullptr; - m_pSource = pSrcBitmap; - m_SrcWidth = pSrcBitmap->GetWidth(); - m_SrcHeight = pSrcBitmap->GetHeight(); - m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4; - if ((flags & FXDIB_NOSMOOTH) == 0) { - bool bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL; - if (!bInterpol && abs(dest_width) != 0 && - abs(dest_height) / 8 < static_cast(m_SrcWidth) * - m_SrcHeight / abs(dest_width)) { - flags = FXDIB_INTERPOL; - } - m_Flags = flags; - } else { - m_Flags = FXDIB_NOSMOOTH; - if (flags & FXDIB_DOWNSAMPLE) { - m_Flags |= FXDIB_DOWNSAMPLE; - } - } - double scale_x = (float)m_SrcWidth / (float)m_DestWidth; - double scale_y = (float)m_SrcHeight / (float)m_DestHeight; - double base_x = m_DestWidth > 0 ? 0.0f : (float)(m_DestWidth); - double base_y = m_DestHeight > 0 ? 0.0f : (float)(m_DestHeight); - double src_left = scale_x * ((float)(clip_rect.left) + base_x); - double src_right = scale_x * ((float)(clip_rect.right) + base_x); - double src_top = scale_y * ((float)(clip_rect.top) + base_y); - double src_bottom = scale_y * ((float)(clip_rect.bottom) + base_y); - if (src_left > src_right) { - double temp = src_left; - src_left = src_right; - src_right = temp; - } - if (src_top > src_bottom) { - double temp = src_top; - src_top = src_bottom; - src_bottom = temp; - } - m_SrcClip.left = (int)floor((float)src_left); - m_SrcClip.right = (int)ceil((float)src_right); - m_SrcClip.top = (int)floor((float)src_top); - m_SrcClip.bottom = (int)ceil((float)src_bottom); - FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight); - m_SrcClip.Intersect(src_rect); - if (m_SrcBpp == 1) { - if (m_DestBpp == 8) { - m_TransMethod = 1; - } else { - m_TransMethod = 2; - } - } else if (m_SrcBpp == 8) { - if (m_DestBpp == 8) { - if (!m_bHasAlpha) { - m_TransMethod = 3; - } else { - m_TransMethod = 4; - } - } else { - if (!m_bHasAlpha) { - m_TransMethod = 5; - } else { - m_TransMethod = 6; - } - } - } else { - if (!m_bHasAlpha) { - m_TransMethod = 7; - } else { - m_TransMethod = 8; - } - } -} - -CStretchEngine::~CStretchEngine() { - FX_Free(m_pDestScanline); - FX_Free(m_pInterBuf); - FX_Free(m_pExtraAlphaBuf); - FX_Free(m_pDestMaskScanline); -} - -bool CStretchEngine::Continue(IFX_Pause* pPause) { - while (m_State == 1) { - if (ContinueStretchHorz(pPause)) { - return true; - } - m_State = 2; - StretchVert(); - } - return false; -} - -bool CStretchEngine::StartStretchHorz() { - if (m_DestWidth == 0 || m_InterPitch == 0 || !m_pDestScanline) - return false; - - if (m_SrcClip.Height() == 0 || - m_SrcClip.Height() > (1 << 29) / m_InterPitch) { - return false; - } - - m_pInterBuf = FX_TryAlloc(unsigned char, m_SrcClip.Height() * m_InterPitch); - if (!m_pInterBuf) - return false; - - if (m_pSource && m_bHasAlpha && m_pSource->m_pAlphaMask) { - m_pExtraAlphaBuf = - FX_Alloc2D(unsigned char, m_SrcClip.Height(), m_ExtraMaskPitch); - uint32_t size = (m_DestClip.Width() * 8 + 31) / 32 * 4; - m_pDestMaskScanline = FX_TryAlloc(unsigned char, size); - if (!m_pDestMaskScanline) - return false; - } - bool ret = - m_WeightTable.Calc(m_DestWidth, m_DestClip.left, m_DestClip.right, - m_SrcWidth, m_SrcClip.left, m_SrcClip.right, m_Flags); - if (!ret) - return false; - - m_CurRow = m_SrcClip.top; - m_State = 1; - return true; -} - -bool CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause) { - if (!m_DestWidth) - return false; - - if (m_pSource->SkipToScanline(m_CurRow, pPause)) - return true; - - int Bpp = m_DestBpp / 8; - static const int kStrechPauseRows = 10; - int rows_to_go = kStrechPauseRows; - for (; m_CurRow < m_SrcClip.bottom; m_CurRow++) { - if (rows_to_go == 0) { - if (pPause && pPause->NeedToPauseNow()) - return true; - - rows_to_go = kStrechPauseRows; - } - - const uint8_t* src_scan = m_pSource->GetScanline(m_CurRow); - uint8_t* dest_scan = - m_pInterBuf + (m_CurRow - m_SrcClip.top) * m_InterPitch; - const uint8_t* src_scan_mask = nullptr; - uint8_t* dest_scan_mask = nullptr; - if (m_pExtraAlphaBuf) { - src_scan_mask = m_pSource->m_pAlphaMask->GetScanline(m_CurRow); - dest_scan_mask = - m_pExtraAlphaBuf + (m_CurRow - m_SrcClip.top) * m_ExtraMaskPitch; - } - switch (m_TransMethod) { - case 1: - case 2: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - if (src_scan[j / 8] & (1 << (7 - j % 8))) { - dest_a += pixel_weight * 255; - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 3: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - dest_a += pixel_weight * src_scan[j]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 4: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - dest_r += pixel_weight * src_scan[j]; - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r = dest_r < 0 ? 0 : dest_r > 16711680 ? 16711680 : dest_r; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_r >> 16); - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - break; - } - case 5: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; - if (m_DestFormat == FXDIB_Rgb) { - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); - dest_b_c += pixel_weight * (uint8_t)argb_cmyk; - } else { - dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - } - *dest_scan++ = (uint8_t)(dest_b_c >> 16); - *dest_scan++ = (uint8_t)(dest_g_m >> 16); - *dest_scan++ = (uint8_t)(dest_r_y >> 16); - } - break; - } - case 6: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; - if (m_DestFormat == FXDIB_Rgba) { - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); - dest_b_c += pixel_weight * (uint8_t)argb_cmyk; - } else { - dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); - } - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_b_c >> 16); - *dest_scan++ = (uint8_t)(dest_g_m >> 16); - *dest_scan++ = (uint8_t)(dest_r_y >> 16); - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - break; - } - case 7: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - const uint8_t* src_pixel = src_scan + j * Bpp; - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - } - *dest_scan++ = (uint8_t)((dest_b_c) >> 16); - *dest_scan++ = (uint8_t)((dest_g_m) >> 16); - *dest_scan++ = (uint8_t)((dest_r_y) >> 16); - dest_scan += Bpp - 3; - } - break; - } - case 8: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = - m_WeightTable.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return false; - - int pixel_weight = *pWeight; - const uint8_t* src_pixel = src_scan + j * Bpp; - if (m_DestFormat == FXDIB_Argb) { - pixel_weight = pixel_weight * src_pixel[3] / 255; - } else { - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - } - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)((dest_b_c) >> 16); - *dest_scan++ = (uint8_t)((dest_g_m) >> 16); - *dest_scan++ = (uint8_t)((dest_r_y) >> 16); - if (m_DestFormat == FXDIB_Argb) { - *dest_scan = (uint8_t)((dest_a * 255) >> 16); - } - if (dest_scan_mask) { - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - dest_scan += Bpp - 3; - } - break; - } - } - rows_to_go--; - } - return false; -} - -void CStretchEngine::StretchVert() { - if (m_DestHeight == 0) - return; - - CWeightTable table; - bool ret = table.Calc(m_DestHeight, m_DestClip.top, m_DestClip.bottom, - m_SrcHeight, m_SrcClip.top, m_SrcClip.bottom, m_Flags); - if (!ret) - return; - - const int DestBpp = m_DestBpp / 8; - for (int row = m_DestClip.top; row < m_DestClip.bottom; row++) { - unsigned char* dest_scan = m_pDestScanline; - unsigned char* dest_scan_mask = m_pDestMaskScanline; - PixelWeight* pPixelWeights = table.GetPixelWeight(row); - switch (m_TransMethod) { - case 1: - case 2: - case 3: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return; - - int pixel_weight = *pWeight; - dest_a += - pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan = (uint8_t)(dest_a >> 16); - dest_scan += DestBpp; - } - break; - } - case 4: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - unsigned char* src_scan_mask = - m_pExtraAlphaBuf + (col - m_DestClip.left); - int dest_a = 0, dest_k = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return; - - int pixel_weight = *pWeight; - dest_k += - pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; - dest_a += pixel_weight * - src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k; - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan = (uint8_t)(dest_k >> 16); - dest_scan += DestBpp; - *dest_scan_mask++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 5: - case 7: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return; - - int pixel_weight = *pWeight; - const uint8_t* src_pixel = - src_scan + (j - m_SrcClip.top) * m_InterPitch; - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - } - dest_scan[0] = (uint8_t)((dest_b_c) >> 16); - dest_scan[1] = (uint8_t)((dest_g_m) >> 16); - dest_scan[2] = (uint8_t)((dest_r_y) >> 16); - dest_scan += DestBpp; - } - break; - } - case 6: - case 8: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - unsigned char* src_scan_mask = nullptr; - if (m_DestFormat != FXDIB_Argb) { - src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left); - } - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int* pWeight = table.GetValueFromPixelWeight(pPixelWeights, j); - if (!pWeight) - return; - - int pixel_weight = *pWeight; - const uint8_t* src_pixel = - src_scan + (j - m_SrcClip.top) * m_InterPitch; - int mask_v = 255; - if (src_scan_mask) { - mask_v = src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; - } - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - if (m_DestFormat == FXDIB_Argb) { - dest_a += pixel_weight * (*(src_pixel + 1)); - } else { - dest_a += pixel_weight * mask_v; - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - if (dest_a) { - int r = ((uint32_t)dest_r_y) * 255 / dest_a; - int g = ((uint32_t)dest_g_m) * 255 / dest_a; - int b = ((uint32_t)dest_b_c) * 255 / dest_a; - dest_scan[0] = b > 255 ? 255 : b < 0 ? 0 : b; - dest_scan[1] = g > 255 ? 255 : g < 0 ? 0 : g; - dest_scan[2] = r > 255 ? 255 : r < 0 ? 0 : r; - } - if (m_DestFormat == FXDIB_Argb) { - dest_scan[3] = (uint8_t)((dest_a) >> 16); - } else { - *dest_scan_mask = (uint8_t)((dest_a) >> 16); - } - dest_scan += DestBpp; - if (dest_scan_mask) { - dest_scan_mask++; - } - } - break; - } - } - m_pDestBitmap->ComposeScanline(row - m_DestClip.top, m_pDestScanline, - m_pDestMaskScanline); - } -} diff --git a/core/fxge/dib/fx_dib_engine_unittest.cpp b/core/fxge/dib/fx_dib_engine_unittest.cpp deleted file mode 100644 index 86df82442f..0000000000 --- a/core/fxge/dib/fx_dib_engine_unittest.cpp +++ /dev/null @@ -1,31 +0,0 @@ -// Copyright 2016 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. - -#include -#include - -#include "core/fpdfapi/parser/cpdf_dictionary.h" -#include "core/fpdfapi/parser/cpdf_number.h" -#include "core/fpdfapi/parser/cpdf_stream.h" -#include "core/fpdfapi/render/cpdf_dibsource.h" -#include "core/fxcrt/fx_memory.h" -#include "core/fxge/dib/dib_int.h" -#include "core/fxge/fx_dib.h" -#include "testing/gtest/include/gtest/gtest.h" -#include "third_party/base/ptr_util.h" - -TEST(CStretchEngine, OverflowInCtor) { - FX_RECT clip_rect; - std::unique_ptr dict_obj = - pdfium::MakeUnique(); - dict_obj->SetNewFor("Width", 71000); - dict_obj->SetNewFor("Height", 12500); - std::unique_ptr stream = - pdfium::MakeUnique(nullptr, 0, std::move(dict_obj)); - auto dib_source = pdfium::MakeRetain(); - dib_source->Load(nullptr, stream.get()); - CStretchEngine engine(nullptr, FXDIB_8bppRgb, 500, 500, clip_rect, dib_source, - 0); - EXPECT_EQ(FXDIB_INTERPOL, engine.m_Flags); -} diff --git a/core/fxge/dib/fx_dib_main.cpp b/core/fxge/dib/fx_dib_main.cpp index 68668b92bc..97b1aa7cca 100644 --- a/core/fxge/dib/fx_dib_main.cpp +++ b/core/fxge/dib/fx_dib_main.cpp @@ -8,7 +8,6 @@ #include -#include "core/fxge/dib/dib_int.h" #include "third_party/base/ptr_util.h" const int16_t SDP_Table[513] = { diff --git a/core/fxge/fx_dib.h b/core/fxge/fx_dib.h index cd6a0e6007..17c7c8fd0a 100644 --- a/core/fxge/fx_dib.h +++ b/core/fxge/fx_dib.h @@ -7,7 +7,7 @@ #ifndef CORE_FXGE_FX_DIB_H_ #define CORE_FXGE_FX_DIB_H_ -#include "core/fxcrt/fx_system.h" +#include "core/fxcrt/fx_coordinates.h" enum FXDIB_Format { FXDIB_Invalid = 0, @@ -27,6 +27,12 @@ enum FXDIB_Format { FXDIB_Cmyka = 0x620, }; +struct PixelWeight { + int m_SrcStart; + int m_SrcEnd; + int m_Weights[1]; +}; + typedef uint32_t FX_ARGB; typedef uint32_t FX_COLORREF; typedef uint32_t FX_CMYK; @@ -34,6 +40,8 @@ class CFX_ClipRgn; class CFX_DIBSource; class CStretchEngine; +extern const int16_t SDP_Table[513]; + #define FXDIB_DOWNSAMPLE 0x04 #define FXDIB_INTERPOL 0x20 #define FXDIB_BICUBIC_INTERPOL 0x80 @@ -113,4 +121,10 @@ FX_ARGB ArgbEncode(int a, FX_COLORREF rgb); #define FXGETFLAG_COLORTYPE(flag) (uint8_t)((flag) >> 8) #define FXGETFLAG_ALPHA_FILL(flag) (uint8_t)(flag) +FX_RECT FXDIB_SwapClipBox(FX_RECT& clip, + int width, + int height, + bool bFlipX, + bool bFlipY); + #endif // CORE_FXGE_FX_DIB_H_ diff --git a/core/fxge/win32/fx_win32_device.cpp b/core/fxge/win32/fx_win32_device.cpp index 811ca11c07..d4abcbe251 100644 --- a/core/fxge/win32/fx_win32_device.cpp +++ b/core/fxge/win32/fx_win32_device.cpp @@ -17,7 +17,7 @@ #include "core/fxge/cfx_windowsdevice.h" #include "core/fxge/dib/cfx_dibextractor.h" #include "core/fxge/dib/cfx_imagerenderer.h" -#include "core/fxge/dib/dib_int.h" +#include "core/fxge/dib/cstretchengine.h" #include "core/fxge/fx_font.h" #include "core/fxge/fx_freetype.h" #include "core/fxge/ge/cfx_folderfontinfo.h" diff --git a/core/fxge/win32/fx_win32_print.cpp b/core/fxge/win32/fx_win32_print.cpp index 084a136d4d..e5df6edd41 100644 --- a/core/fxge/win32/fx_win32_print.cpp +++ b/core/fxge/win32/fx_win32_print.cpp @@ -14,7 +14,7 @@ #include "core/fxge/cfx_windowsdevice.h" #include "core/fxge/dib/cfx_dibextractor.h" #include "core/fxge/dib/cfx_imagerenderer.h" -#include "core/fxge/dib/dib_int.h" +#include "core/fxge/dib/cstretchengine.h" #include "core/fxge/fx_freetype.h" #include "core/fxge/ge/fx_text_int.h" #include "core/fxge/win32/cpsoutput.h" -- cgit v1.2.3