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# Copyright 2013 The PDFium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//build/config/features.gni")
import("//build/config/freetype/freetype.gni")
import("//build/config/ui.gni")
import("//testing/test.gni")
import("//third_party/skia/gn/codec.gni")
import("//third_party/skia/gn/shared_sources.gni")
import("//third_party/skia/modules/skcms/skcms.gni")
import("features.gni")
if (current_cpu == "arm") {
import("//build/config/arm.gni")
}
if (current_cpu == "mipsel" || current_cpu == "mips64el") {
import("//build/config/mips.gni")
}
skia_use_ganesh_backend = !is_ios
skia_support_pdf = false
# External-facing config for dependent code.
config("skia_config") {
include_dirs = [ "//third_party/skia" ]
defines = [
"SK_ENCODE_PNG",
"SK_USER_CONFIG_HEADER=\"../../skia/config/SkPdfiumUserConfig.h\"",
"SK_DISABLE_LEGACY_SKSURFACE_METHODS",
"SK_DISABLE_LEGACY_GRAPHITE_IMAGE_FACTORIES",
"SK_DISABLE_LEGACY_GRAPHITE_IMAGE_METHODS",
"SK_DISABLE_LEGACY_SKSURFACE_FACTORIES",
"SK_DISABLE_LEGACY_SKSURFACE_FLUSH",
"SK_DISABLE_LEGACY_SKSURFACE_AS_IMAGE",
"SK_DISABLE_LEGACY_SKSURFACE_DISPLAYLIST",
"SK_DISABLE_LEGACY_IMAGE_SUBSET_METHODS",
"SK_DISABLE_LEGACY_IMAGE_COLORSPACE_METHODS",
"SK_DISABLE_LEGACY_IMAGE_RELEASE_PROCS",
"SK_DISABLE_LEGACY_GL_BACKEND_SURFACE",
"SK_DISABLE_LEGACY_INIT_DECODERS",
"SK_DISABLE_LEGACY_GRDIRECTCONTEXT_FLUSH",
"SK_DISABLE_LEGACY_GRDIRECTCONTEXT_BOOLS",
"SK_DISABLE_LEGACY_GL_GRDIRECTCONTEXT_FACTORIES",
"SK_DISABLE_LEGACY_PNG_WRITEBUFFER",
"SK_SLUG_DISABLE_LEGACY_DESERIALIZE",
"SK_DISABLE_LEGACY_VK_GRDIRECTCONTEXT_FACTORIES",
]
if (is_win) {
defines += [ "SK_FREETYPE_MINIMUM_RUNTIME_VERSION=(((FREETYPE_MAJOR) * 0x01000000) | ((FREETYPE_MINOR) * 0x00010000) | ((FREETYPE_PATCH) * 0x00000100))" ]
}
if (is_component_build) {
defines += [
"SKIA_DLL",
"GR_GL_IGNORE_ES3_MSAA=0",
]
}
if (skia_use_ganesh_backend) {
defines += [ "SK_GANESH" ]
}
if (skia_use_gl) {
defines += [ "SK_GL" ]
}
if (is_android) {
defines += [
"SK_BUILD_FOR_ANDROID",
"USE_CHROMIUM_SKIA",
]
}
if (is_mac) {
defines += [ "SK_BUILD_FOR_MAC" ]
}
if (is_win) {
defines += [ "GR_GL_FUNCTION_TYPE=__stdcall" ]
}
}
# Internal-facing config for Skia library code.
config("skia_library_config") {
# Turn on SK_API to export Skia's public API
defines = [
"IS_SKIA_IMPL=1",
"SKIA_IMPLEMENTATION=1",
]
if (use_blink && !use_system_freetype) {
defines += [ "SK_FREETYPE_MINIMUM_RUNTIME_VERSION=(((FREETYPE_MAJOR) * 0x01000000) | ((FREETYPE_MINOR) * 0x00010000) | ((FREETYPE_PATCH) * 0x00000100))" ]
}
if (use_blink) {
defines += [ "SK_TYPEFACE_FACTORY_FREETYPE" ]
}
if (is_win) {
defines += [ "SK_TYPEFACE_FACTORY_DIRECTWRITE" ]
}
if (is_apple) {
defines += [ "SK_TYPEFACE_FACTORY_CORETEXT" ]
}
if (current_cpu == "arm") {
if (arm_use_neon) {
defines += [ "SK_ARM_HAS_NEON" ]
} else if (arm_optionally_use_neon) {
defines += [ "SK_ARM_HAS_OPTIONAL_NEON" ]
}
}
# Settings for text blitting, chosen to approximate the system browser.
if (is_linux || is_chromeos) {
defines += [
"SK_GAMMA_EXPONENT=1.2",
"SK_GAMMA_CONTRAST=0.2",
]
} else if (is_android) {
defines += [
"SK_GAMMA_APPLY_TO_A8",
"SK_GAMMA_EXPONENT=1.4",
"SK_GAMMA_CONTRAST=0.0",
]
} else if (is_win) {
defines += [
"SK_GAMMA_SRGB",
"SK_GAMMA_CONTRAST=0.5",
]
} else if (is_mac) {
defines += [
"SK_GAMMA_SRGB",
"SK_GAMMA_CONTRAST=0.0",
]
}
if (is_android) {
defines += [
# Android devices are typically more memory constrained, so default to a
# smaller glyph cache (it may be overriden at runtime when the renderer
# starts up, depending on the actual device memory).
"SK_DEFAULT_FONT_CACHE_LIMIT=1048576", # 1024 * 1024
]
} else {
defines += [ "SK_DEFAULT_FONT_CACHE_LIMIT=20971520" ] # 20 * 1024 * 1024
}
if (is_win) {
defines += [
# On windows, GDI handles are a scarse system-wide resource so we have to
# keep the glyph cache, which holds up to 4 GDI handles per entry, to a
# fairly small size. http://crbug.com/314387
"SK_DEFAULT_FONT_CACHE_COUNT_LIMIT=256",
]
cflags = [
"/wd4244", # conversion from 'type1( __int64)' to 'type2 (unsigned int)'
"/wd4341", # signed value is out of range for enum constant.
"/wd4345", # Object is default-initialized if initialization is omitted.
"/wd4390", # ';'empty statement found in looping;is it what was intended?
"/wd4554", # 'operator' : check operator precedence for possible error
"/wd4748", # compiler will disable optimizations if a function has inline
# assembly code contains flow control(jmp or jcc) statements.
"/wd4800", # forcing value to bool 'true/false'(assigning int to bool).
"/wd5041", # out-of-line definition for constexpr static data member is
# not needed and is deprecated in C++17
]
}
}
source_set("skcms") {
cflags = []
if (!is_win || is_clang) {
cflags += [
"-w",
"-std=c11",
]
}
# LLVM automatically sets the equivalent of GCC's -mfp16-format=ieee on ARM
# builds by default, while GCC itself does not. We need it to enable support
# for half-precision floating point data types used by SKCMS on ARM.
if ((is_linux || is_chromeos) && !is_clang && current_cpu == "arm") {
cflags += [ "-mfp16-format=ieee" ]
}
public =
rebase_path(skcms_public_headers, ".", "//third_party/skia/modules/skcms")
sources = rebase_path(skcms_sources, ".", "//third_party/skia/modules/skcms")
}
component("skia") {
deps = []
sources = [
# PDFium sources.
"config/SkPdfiumUserConfig.h",
"ext/google_logging.cc",
]
# The skia sources values are relative to the skia_dir, so we need to rebase.
sources += skia_core_public
sources += skia_sksl_gpu_sources
sources += skia_sksl_sources
sources += skia_utils_private
sources += skia_xps_sources
sources += skia_codec_core
sources += skia_codec_decode_bmp
sources += skia_encode_srcs
sources += skia_encode_png_srcs
sources += [
"//third_party/skia/src/fonts/SkFontMgr_indirect.cpp",
"//third_party/skia/src/fonts/SkRemotableFontMgr.cpp",
"//third_party/skia/src/ports/SkGlobalInitialization_default.cpp",
"//third_party/skia/src/ports/SkImageGenerator_none.cpp",
"//third_party/skia/src/ports/SkOSFile_stdio.cpp",
"//third_party/skia/src/sfnt/SkOTTable_name.cpp",
"//third_party/skia/src/sfnt/SkOTUtils.cpp",
#pdfium
"//third_party/skia/src/ports/SkDiscardableMemory_none.cpp",
"//third_party/skia/src/ports/SkMemory_malloc.cpp",
]
# This and skia_opts are really the same conceptual target so share headers.
allow_circular_includes_from = [ ":skia_opts" ]
# GPU
if (skia_use_ganesh_backend) {
sources += skia_gpu_public
sources += skia_ganesh_private
sources += skia_null_gpu_sources
sources += skia_shared_gpu_sources
if (skia_use_gl) {
sources += skia_gpu_gl_public
sources += skia_gpu_gl_private
}
}
# Remove unused util files include in utils.gni
sources -= [
"//third_party/skia/src/utils/SkCamera.cpp",
"//third_party/skia/src/utils/SkParsePath.cpp",
]
if (is_win) {
libs = [ "fontsub.lib" ]
}
# need separate win section to handle chromes auto gn filter
# (build/config/BUILDCONFIG.gn)
if (is_win) {
sources -= [
#windows
"//third_party/skia/src/utils/win/SkWGL_win.cpp",
]
}
# Select Skia ports.
# FreeType is needed everywhere (except on iOS), on Linux and Android as main
# font backend, on Windows and Mac as fallback backend for Variations.
if (!is_ios) {
sources += [
"//third_party/skia/src/ports/SkFontHost_FreeType.cpp",
"//third_party/skia/src/ports/SkFontHost_FreeType_common.cpp",
]
}
if (is_win) {
# See SK_TYPEFACE_FACTORY_DIRECTWRITE
sources += [
"//third_party/skia/src/ports/SkFontMgr_win_dw.cpp",
"//third_party/skia/src/ports/SkFontMgr_win_dw_factory.cpp",
"//third_party/skia/src/ports/SkOSFile_win.cpp",
"//third_party/skia/src/ports/SkRemotableFontMgr_win_dw.cpp",
"//third_party/skia/src/ports/SkScalerContext_win_dw.cpp",
"//third_party/skia/src/ports/SkTypeface_win_dw.cpp",
]
} else {
sources += [ "//third_party/skia/src/ports/SkOSFile_posix.cpp" ]
}
frameworks = []
if (is_apple) {
# See SK_TYPEFACE_FACTORY_CORETEXT
sources += [
"//third_party/skia/include/ports/SkFontMgr_mac_ct.h",
"//third_party/skia/src/ports/SkFontMgr_mac_ct.cpp",
"//third_party/skia/src/ports/SkFontMgr_mac_ct_factory.cpp",
"//third_party/skia/src/ports/SkScalerContext_mac_ct.cpp",
"//third_party/skia/src/ports/SkScalerContext_mac_ct.h",
"//third_party/skia/src/ports/SkTypeface_mac_ct.cpp",
"//third_party/skia/src/ports/SkTypeface_mac_ct.h",
]
frameworks += [
"CoreFoundation.framework",
"CoreGraphics.framework",
"CoreText.framework",
]
}
if (is_linux || is_chromeos) {
sources += [
"//third_party/skia/src/ports/SkFontConfigInterface.cpp",
"//third_party/skia/src/ports/SkFontConfigInterface_direct.cpp",
"//third_party/skia/src/ports/SkFontConfigInterface_direct_factory.cpp",
"//third_party/skia/src/ports/SkFontMgr_FontConfigInterface.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom_empty.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom_empty_factory.cpp",
]
}
if (is_android) {
sources += [
# Unlike Chromium, standalone PDFium on Linux and Chrome OS does not
# require these files, since PDFium does not perform Android emulation.
# Note that this requires expat.
"//third_party/skia/src/ports/SkFontMgr_android.cpp",
"//third_party/skia/src/ports/SkFontMgr_android_factory.cpp",
"//third_party/skia/src/ports/SkFontMgr_android_parser.cpp",
]
}
if (is_fuchsia) {
sources += [
# TODO(crbug.com/pdfium/2019): Consider using SkFontMgr_fuchsia.cpp
# instead of SkFontMgr_custom_empty.cpp.
"//third_party/skia/src/ports/SkFontMgr_custom.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom_empty.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom_empty_factory.cpp",
]
deps += [
"//third_party/fuchsia-sdk/sdk/fidl/fuchsia.fonts:fuchsia.fonts_hlcpp",
"//third_party/fuchsia-sdk/sdk/fidl/fuchsia.io:fuchsia.io_hlcpp",
"//third_party/fuchsia-sdk/sdk/fidl/fuchsia.sys:fuchsia.sys_hlcpp",
"//third_party/fuchsia-sdk/sdk/pkg/sys_cpp",
"//third_party/fuchsia-sdk/sdk/pkg/zx",
"//third_party/icu:icuuc",
]
}
if (is_win || (is_apple && use_blink)) {
sources += [
# Add the FreeType custom font manager as a fallback backend for variable fonts.
"//third_party/skia/src/ports/SkFontMgr_custom.cpp",
"//third_party/skia/src/ports/SkFontMgr_custom_empty.cpp",
]
}
if (is_clang && !is_nacl) {
# Skia won't compile with some of the more strict clang warnings.
# e.g. it does:
# SkASSERT(!"sk_out_of_memory");
configs -= [ "//build/config/clang:extra_warnings" ]
}
configs -= [ "//build/config/compiler:chromium_code" ]
configs += [
":skia_config",
":skia_library_config",
"//build/config/compiler:no_chromium_code",
]
public_configs = [ ":skia_config" ]
deps += [
":skcms",
":skia_opts",
"../third_party:png",
"../third_party:zlib",
"//:freetype_common",
]
public_deps = [ ":skia_core_and_effects" ]
if (is_linux || is_chromeos) {
deps += [
"//third_party:fontconfig",
"//third_party/icu:icuuc",
]
}
if (is_android) {
deps += [
"//third_party/cpu_features:ndk_compat",
"//third_party/expat",
]
}
if (is_android && !is_debug) {
configs -= [ "//build/config/compiler:default_optimization" ]
configs += [ "//build/config/compiler:optimize_max" ]
}
if (is_ios) {
frameworks += [ "ImageIO.framework" ]
}
if (skia_support_pdf) {
deps += [ "//third_party/sfntly" ]
sources += skia_pdf_sources
} else {
sources += [ "//third_party/skia/src/pdf/SkDocument_PDF_None.cpp" ]
}
}
# Template for things that are logically part of :skia, but need to be split out
# so custom compile flags can be applied.
#
# These are all opted out of check_includes, due to (logically) being part of
# skia.
template("skia_source_set") {
source_set(target_name) {
forward_variables_from(invoker, "*")
check_includes = false
if (!is_debug) {
configs -= [ "//build/config/compiler:default_optimization" ]
configs += [ "//build/config/compiler:optimize_max" ]
}
configs -= [ "//build/config/compiler:chromium_code" ]
configs += [
":skia_config",
":skia_library_config",
"//build/config/compiler:no_chromium_code",
]
public_configs = [ ":skia_config" ]
if (is_win) {
cflags_cc = [
"/wd5041", # out-of-line definition for constexpr static data member is
# not needed and is deprecated in C++17
]
}
}
}
skia_source_set("skia_core_and_effects") {
defines = []
sources = skia_core_sources
sources += skia_effects_sources
sources += skia_colorfilters_sources
sources += skia_effects_imagefilter_sources
visibility = [ ":skia" ]
}
# Bits that involve special vector-y hardware.
if (current_cpu == "x86" || current_cpu == "x64") {
skia_source_set("skia_opts_hsw") {
sources = skia_opts.hsw_sources
if (!is_win) {
cflags = [
"-mavx2",
"-mbmi",
"-mbmi2",
"-mf16c",
"-mfma",
]
}
if (is_win) {
cflags = [ "/arch:AVX2" ]
}
visibility = [ ":skia_opts" ]
}
}
skia_source_set("skia_opts") {
cflags = []
defines = []
if (current_cpu == "x86" || current_cpu == "x64") {
deps = [ ":skia_opts_hsw" ]
} else if (current_cpu == "arm") {
# The assembly uses the frame pointer register (r7 in Thumb/r11 in
# ARM), the compiler doesn't like that.
cflags += [ "-fomit-frame-pointer" ]
if (arm_version >= 7) {
if (arm_use_neon || arm_optionally_use_neon) {
# Root build config sets -mfpu=$arm_fpu, which we expect to be neon
# when running this.
if (!arm_use_neon) {
configs -= [ "//build/config/compiler:compiler_arm_fpu" ]
cflags += [ "-mfpu=neon" ]
}
}
}
} else if (current_cpu == "arm64") {
# Conditional and empty body needed to avoid assert below
} else if (current_cpu == "mipsel" || current_cpu == "mips64el") {
cflags += [ "-fomit-frame-pointer" ]
} else {
assert(false, "Unsupported target CPU " + current_cpu)
}
if (is_android && !is_debug) {
configs -= [ "//build/config/compiler:default_optimization" ]
configs += [ "//build/config/compiler:optimize_max" ]
}
visibility = [ ":skia" ]
}