// Copyright 2017 The PDFium Authors // 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_scanlinecompositor.h" #include <algorithm> #include "core/fxcrt/check.h" #include "core/fxcrt/check_op.h" #include "core/fxcrt/compiler_specific.h" #include "core/fxcrt/fx_memcpy_wrappers.h" #include "core/fxcrt/notreached.h" #include "core/fxcrt/span_util.h" #include "core/fxcrt/stl_util.h" #include "core/fxcrt/zip.h" #include "core/fxge/dib/blend.h" #include "core/fxge/dib/fx_dib.h" Blend; namespace { uint8_t AlphaUnion(uint8_t dest, uint8_t src) { … } int Lum(FX_RGB_STRUCT<int> color) { … } FX_RGB_STRUCT<int> ClipColor(FX_RGB_STRUCT<int> color) { … } FX_RGB_STRUCT<int> SetLum(FX_RGB_STRUCT<int> color, int l) { … } int Sat(FX_RGB_STRUCT<int> color) { … } FX_RGB_STRUCT<int> SetSat(FX_RGB_STRUCT<int> color, int s) { … } template <typename T, typename U> FX_RGB_STRUCT<int> RgbBlend(BlendMode blend_type, const T& src_in, const U& back_in) { … } // Prefer RgbBlend() above in new code. void RGB_Blend(BlendMode blend_mode, const uint8_t* src_scan, const uint8_t* dest_scan, int results[3]) { … } int GetAlpha(uint8_t src_alpha, const uint8_t* clip_scan, int col) { … } int GetAlphaWithSrc(uint8_t src_alpha, pdfium::span<const uint8_t> clip_scan, pdfium::span<const uint8_t> src_scan, size_t col) { … } template <typename T, typename U> void AlphaMergeToDest(const T& input, U& output, uint8_t alpha) { … } #if defined(PDF_USE_SKIA) template <typename T, typename U> void AlphaMergeToDestPremul(const T& input, U& output) { … } #endif // defined(PDF_USE_SKIA) template <typename T, typename U> void AlphaMergeToSource(const T& input, U& output, uint8_t alpha) { … } void CompositePixelBgra2Mask(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, uint8_t& output) { … } void CompositeRowBgra2Mask(pdfium::span<const FX_BGRA_STRUCT<uint8_t>> src_span, pdfium::span<const uint8_t> clip_span, pdfium::span<uint8_t> dest_span) { … } void CompositeRow_Rgb2Mask(pdfium::span<uint8_t> dest_span, int width, pdfium::span<const uint8_t> clip_span) { … } bool IsNonSeparableBlendMode(BlendMode mode) { … } template <typename T> uint8_t GetGrayWithBlend(const T& input, uint8_t output_value, BlendMode blend_type) { … } void CompositePixelBgra2Gray(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, uint8_t& output, BlendMode blend_type) { … } void CompositeRowBgra2Gray(pdfium::span<const FX_BGRA_STRUCT<uint8_t>> src_span, pdfium::span<const uint8_t> clip_span, pdfium::span<uint8_t> dest_span, BlendMode blend_type) { … } void CompositeRow_Rgb2Gray(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_Bpp, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Bgr2Bgra_Blend_NoClip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int src_Bpp) { … } void CompositeRow_Bgr2Bgra_Blend_Clip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Bgr2Bgra_NoBlend_Clip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Bgr2Bgra_NoBlend_NoClip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int src_Bpp) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgrNonSeparableBlend( const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgrBlend(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgrNoBlend(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, DestPixelStruct& output) { … } template <typename DestPixelStruct> void CompositeRowBgra2Bgr(pdfium::span<const FX_BGRA_STRUCT<uint8_t>> src_span, pdfium::span<const uint8_t> clip_span, pdfium::span<DestPixelStruct> dest_span, BlendMode blend_type) { … } // Returns 0 when no further work is required by the caller. Otherwise, returns // `src_alpha` and the caller needs to use that to call one of the // CompositePixelBgra2Bgra*Blend() functions. template <typename DestPixelStruct> uint8_t CompositePixelBgra2BgraCommon(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t clip, DestPixelStruct& output) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgraNonSeparableBlend( const FX_BGRA_STRUCT<uint8_t>& input, uint8_t src_alpha, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgraBlend(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t src_alpha, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgra2BgraNoBlend(const FX_BGRA_STRUCT<uint8_t>& input, uint8_t src_alpha, DestPixelStruct& output) { … } template <typename DestPixelStruct> void CompositeRowBgra2Bgra(pdfium::span<const FX_BGRA_STRUCT<uint8_t>> src_span, pdfium::span<const uint8_t> clip_span, pdfium::span<DestPixelStruct> dest_span, BlendMode blend_type) { … } #if defined(PDF_USE_SKIA) // Returns false when no further work is required by the caller. Otherwise, // returns true and the caller needs to call one of the // CompositePixelBgraPremul2BgraPremul*Blend() functions. template <typename DestPixelStruct> uint8_t CompositePixelBgraPremul2BgraPremulCommon( const FX_BGRA_STRUCT<uint8_t>& input, DestPixelStruct& output) { … } template <typename DestPixelStruct> void CompositePixelBgraPremul2BgraPremulNonSeparableBlend( const FX_BGRA_STRUCT<uint8_t>& input, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgraPremul2BgraPremulBlend( const FX_BGRA_STRUCT<uint8_t>& input, DestPixelStruct& output, BlendMode blend_type) { … } template <typename DestPixelStruct> void CompositePixelBgraPremul2BgraPremulNoBlend( const FX_BGRA_STRUCT<uint8_t>& input, DestPixelStruct& output) { … } template <typename DestPixelStruct> void CompositeRowBgraPremul2BgraPremul( pdfium::span<const FX_BGRA_STRUCT<uint8_t>> src_span, pdfium::span<DestPixelStruct> dest_span, BlendMode blend_type) { … } #endif // defined(PDF_USE_SKIA) void CompositeRow_Rgb2Rgb_Blend_NoClip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int dest_Bpp, int src_Bpp) { … } void CompositeRow_Rgb2Rgb_Blend_Clip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int dest_Bpp, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Rgb2Rgb_NoBlend_NoClip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int dest_Bpp, int src_Bpp) { … } void CompositeRow_Rgb2Rgb_NoBlend_Clip(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int dest_Bpp, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_8bppPal2Gray(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, pdfium::span<const uint8_t> palette_span, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_1bppPal2Gray(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_left, pdfium::span<const uint8_t> src_palette, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_8bppRgb2Rgb_NoBlend(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, pdfium::span<const uint32_t> palette_span, int pixel_count, int DestBpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_1bppRgb2Rgb_NoBlend(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_left, pdfium::span<const uint32_t> src_palette, int pixel_count, int DestBpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_8bppBgr2Bgra_NoBlend( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, pdfium::span<const uint32_t> palette_span, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_1bppBgr2Bgra_NoBlend(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_left, int width, pdfium::span<const uint32_t> src_palette, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Bgra(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Rgb(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count, BlendMode blend_type, int Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Mask(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int pixel_count, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Gray(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_gray, int pixel_count, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Bgra(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int src_left, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Rgb(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int src_left, int pixel_count, BlendMode blend_type, int Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Mask(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_left, int pixel_count, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Gray(pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_gray, int src_left, int pixel_count, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Bgr2Bgra_Blend_NoClip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int src_Bpp) { … } void CompositeRow_Bgr2Bgra_NoBlend_NoClip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int src_Bpp) { … } void CompositeRow_Rgb2Rgb_Blend_NoClip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int dest_Bpp, int src_Bpp) { … } void CompositeRow_Rgb2Rgb_NoBlend_NoClip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int dest_Bpp, int src_Bpp) { … } void CompositeRow_Bgr2Bgra_Blend_Clip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Rgb2Rgb_Blend_Clip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, BlendMode blend_type, int dest_Bpp, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Bgr2Bgra_NoBlend_Clip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_Rgb2Rgb_NoBlend_Clip_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, int dest_Bpp, int src_Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_8bppRgb2Rgb_NoBlend_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, const FX_ARGB* pPalette, int pixel_count, int DestBpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_1bppRgb2Rgb_NoBlend_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_left, pdfium::span<const FX_ARGB> src_palette, int pixel_count, int DestBpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_8bppBgr2Bgra_NoBlend_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int width, const FX_ARGB* pPalette, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_1bppBgr2Bgra_NoBlend_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int src_left, int width, pdfium::span<const FX_ARGB> src_palette, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Bgra_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_ByteMask2Rgb_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int pixel_count, BlendMode blend_type, int Bpp, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Bgra_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int src_left, int pixel_count, BlendMode blend_type, pdfium::span<const uint8_t> clip_span) { … } void CompositeRow_BitMask2Rgb_RgbByteOrder( pdfium::span<uint8_t> dest_span, pdfium::span<const uint8_t> src_span, int mask_alpha, int src_r, int src_g, int src_b, int src_left, int pixel_count, BlendMode blend_type, int Bpp, pdfium::span<const uint8_t> clip_span) { … } } // namespace CFX_ScanlineCompositor::CFX_ScanlineCompositor() = default; CFX_ScanlineCompositor::~CFX_ScanlineCompositor() = default; bool CFX_ScanlineCompositor::Init(FXDIB_Format dest_format, FXDIB_Format src_format, pdfium::span<const uint32_t> src_palette, uint32_t mask_color, BlendMode blend_type, bool bRgbByteOrder) { … } void CFX_ScanlineCompositor::InitSourceMask(uint32_t mask_color) { … } void CFX_ScanlineCompositor::InitSourcePalette( pdfium::span<const uint32_t> src_palette) { … } void CFX_ScanlineCompositor::CompositeRgbBitmapLine( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositeRgbBitmapLineSrcBgrx( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositeRgbBitmapLineSrcBgra( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int width, pdfium::span<const uint8_t> clip_scan) const { … } #if defined(PDF_USE_SKIA) void CFX_ScanlineCompositor::CompositeRgbBitmapLineSrcBgraPremul( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int width) const { … } #endif // defined(PDF_USE_SKIA) void CFX_ScanlineCompositor::CompositePalBitmapLine( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int src_left, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositePalBitmapLineSrcBpp1( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int src_left, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositePalBitmapLineSrcBpp8( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int src_left, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositeByteMaskLine( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int width, pdfium::span<const uint8_t> clip_scan) const { … } void CFX_ScanlineCompositor::CompositeBitMaskLine( pdfium::span<uint8_t> dest_scan, pdfium::span<const uint8_t> src_scan, int src_left, int width, pdfium::span<const uint8_t> clip_scan) const { … } CFX_ScanlineCompositor::Palette::Palette() = default; CFX_ScanlineCompositor::Palette::~Palette() = default; void CFX_ScanlineCompositor::Palette::Reset() { … } pdfium::span<uint8_t> CFX_ScanlineCompositor::Palette::Make8BitPalette( size_t nElements) { … } pdfium::span<uint32_t> CFX_ScanlineCompositor::Palette::Make32BitPalette( size_t nElements) { … } pdfium::span<const uint8_t> CFX_ScanlineCompositor::Palette::Get8BitPalette() const { … } pdfium::span<const uint32_t> CFX_ScanlineCompositor::Palette::Get32BitPalette() const { … }
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