libgav1/BUILD.gn

# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/arm.gni")
import("//third_party/libgav1/libgav1_srcs.gni")
import("//third_party/libgav1/options.gni")

config("public_libgav1_config") {
  include_dirs = [
    "src",
    "src/src",
  ]

  defines = [
    "LIBGAV1_MAX_BITDEPTH=10",
    "LIBGAV1_THREADPOOL_USE_STD_MUTEX",  # to avoid abseil dependency.
    "LIBGAV1_ENABLE_LOGGING=0",  # to avoid debug log of libgav1 in chromium
                                 # debug build.

    # Don't let libgav1 export any symbols. Otherwise the verify_order step on
    # macOS can fail since these exports end up in the final Chromium binary.
    "LIBGAV1_PUBLIC=",
  ]
}

config("private_libgav1_config") {
  configs = []

  # dsp intrinsics will generate much better code when optimized for speed
  # rather than size.
  if (!is_debug) {
    configs += [ "//build/config/compiler:optimize_max" ]
  }
  if (current_cpu == "arm64" ||
      (current_cpu == "arm" && arm_version >= 7 && arm_use_neon)) {
    # The default thumb mode will impact performance of dsp intrinsics.
    configs += [ "//build/config/compiler:compiler_arm" ]
  }
}

if (enable_libgav1_decoder || use_libgav1_parser) {
  # Separate from libgav1 because utils/constants.cc and dsp/constants.cc
  # generate the same object file, constants.o.
  source_set("libgav1_utils") {
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    configs += [ ":private_libgav1_config" ]

    public_configs = [ ":public_libgav1_config" ]

    sources = gav1_utils_sources
  }

  # Separate from libgav1 because film_grain.cc and dsp/film_grain.cc
  # generate the same object file, film_grain.o.
  source_set("libgav1_dsp") {
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    configs += [ ":private_libgav1_config" ]

    deps = [
      ":libgav1_dsp_sse4",
      ":libgav1_utils",
    ]
    public_configs = [ ":public_libgav1_config" ]

    sources = gav1_dsp_sources + gav1_dsp_headers_sources
    sources += gav1_dsp_avx2_sources + gav1_dsp_avx2_headers_sources
  }

  # SSE4 sources are split to their own target as Chrome is currently built
  # with -msse3.
  source_set("libgav1_dsp_sse4") {
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    configs += [ ":private_libgav1_config" ]

    deps = [ ":libgav1_utils" ]
    public_configs = [ ":public_libgav1_config" ]

    if (current_cpu == "x86" || current_cpu == "x64") {
      cflags = [ "-msse4.1" ]
    }

    sources = gav1_dsp_sse4_sources + gav1_dsp_sse4_headers_sources +
              gav1_dsp_headers_sources + gav1_dsp_avx2_headers_sources
  }

  static_library("libgav1") {
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    configs += [ ":private_libgav1_config" ]

    public_configs = [ ":public_libgav1_config" ]
    public_deps = [
      ":libgav1_dsp",
      ":libgav1_utils",
    ]

    sources = gav1_common_sources
    sources += gav1_gav1_sources
    sources += gav1_post_filter_sources
    sources += gav1_tile_sources
  }
}