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1# Copyright 2016 Google Inc.
2#
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6declare_args() {
7  skia_use_system_libpng = is_official_build
8}
9
10import("../../gn/oh_skia.gni")
11import("../third_party.gni")
12
13if (skia_use_system_libpng) {
14  system("libpng") {
15    libs = [ "png" ]
16  }
17} else {
18  third_party("libpng") {
19    public_include_dirs = [
20      ".",
21      "../externals/libpng",
22    ]
23
24    defines = [ "PNG_SET_OPTION_SUPPORTED" ]
25    if (is_mingw) {
26      external_deps = [ "zlib:libz" ]
27    } else {
28      deps = [ "${skia_third_party_dir}/zlib" ]
29    }
30    sources = [
31      "../externals/libpng/png.c",
32      "../externals/libpng/pngerror.c",
33      "../externals/libpng/pngget.c",
34      "../externals/libpng/pngmem.c",
35      "../externals/libpng/pngpread.c",
36      "../externals/libpng/pngread.c",
37      "../externals/libpng/pngrio.c",
38      "../externals/libpng/pngrtran.c",
39      "../externals/libpng/pngrutil.c",
40      "../externals/libpng/pngset.c",
41      "../externals/libpng/pngtrans.c",
42      "../externals/libpng/pngwio.c",
43      "../externals/libpng/pngwrite.c",
44      "../externals/libpng/pngwtran.c",
45      "../externals/libpng/pngwutil.c",
46    ]
47
48    if (current_cpu == "arm" || current_cpu == "arm64") {
49      sources += [
50        "../externals/libpng/arm/arm_init.c",
51        "../externals/libpng/arm/filter_neon_intrinsics.c",
52        "../externals/libpng/arm/palette_neon_intrinsics.c",
53      ]
54    }
55
56    if (current_cpu == "x86" || current_cpu == "x64") {
57      defines += [ "PNG_INTEL_SSE" ]
58      sources += [
59        "../externals/libpng/intel/filter_sse2_intrinsics.c",
60        "../externals/libpng/intel/intel_init.c",
61      ]
62    }
63  }
64}
65