# Copyright 2015 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/buildflag_header.gni")
import("//build/config/chromecast_build.gni")
import("//chromecast/chromecast.gni")
import("//media/media_options.gni")
import("//testing/test.gni")

declare_args() {
  # Set true to use raw timestamps on non-desktop cast build.
  # ALSA version equal or later than 1.0.29 support this function.
  use_alsa_monotonic_raw_tstamps = !is_cast_desktop_build
}

# Alsa must be used for these targets to build.
assert(use_alsa)

cast_shared_library("libcast_media_1.0_audio") {
  sources = [
    "cast_media_shlib.cc",
    "media_codec_support_cast_audio.cc",
    "post_processing_pipeline_impl.cc",
    "post_processing_pipeline_impl.h",
  ]

  deps = [
    ":alsa_cma_backend",
    ":post_processor_factory",
    "//base",
    "//chromecast/base",
    "//chromecast/public",
    "//chromecast/public/media",
    "//media",
  ]
}

source_set("alsa_cma_backend") {
  sources = [
    "alsa_volume_control.cc",
    "alsa_volume_control.h",
    "alsa_wrapper.cc",
    "alsa_wrapper.h",
    "audio_decoder_alsa.cc",
    "audio_decoder_alsa.h",
    "filter_group.cc",
    "filter_group.h",
    "media_pipeline_backend_alsa.cc",
    "media_pipeline_backend_alsa.h",
    "post_processing_pipeline.h",
    "post_processing_pipeline_parser.cc",
    "post_processing_pipeline_parser.h",
    "stream_mixer_alsa.cc",
    "stream_mixer_alsa.h",
    "stream_mixer_alsa_input.cc",
    "stream_mixer_alsa_input.h",
    "stream_mixer_alsa_input_impl.cc",
    "stream_mixer_alsa_input_impl.h",
    "volume_control.cc",
  ]

  libs = [ "asound" ]

  deps = [
    ":alsa_features",
    ":slew_volume",
    ":volume_map",
    "//base",
    "//chromecast/base",
    "//chromecast/media/base",
    "//chromecast/media/cma/backend:null",
    "//chromecast/media/cma/base",
    "//chromecast/media/cma/decoder",
    "//chromecast/public/media",
    "//media",
    "//media:shared_memory_support",
  ]
}

source_set("volume_map") {
  sources = [
    "cast_audio_json.cc",
    "cast_audio_json.h",
    "volume_map.cc",
    "volume_map.h",
  ]
  deps = [
    "//base",
    "//chromecast/base",
  ]
}

source_set("slew_volume") {
  sources = [
    "slew_volume.cc",
    "slew_volume.h",
  ]
  deps = [
    "//base",
    "//media:shared_memory_support",
  ]
}

alsa_owns_volume = !enable_assistant && chromecast_branding != "google"

buildflag_header("alsa_features") {
  header = "alsa_features.h"

  flags = [
    "ALSA_MONOTONIC_RAW_TSTAMPS=$use_alsa_monotonic_raw_tstamps",
    "ALSA_OWNS_VOLUME=$alsa_owns_volume",
  ]
}

test("cast_alsa_cma_backend_unittests") {
  sources = [
    "filter_group_unittest.cc",
    "post_processors/governor_unittest.cc",
    "post_processors/saturated_gain_unittest.cc",
    "slew_volume_unittests.cc",
    "stream_mixer_alsa_unittest.cc",
  ]

  deps = [
    ":governor",
    ":libcast_governor_1.0",
    ":libcast_saturated_gain_1.0",
    ":post_processor_factory",
    ":post_processor_test_support",
    ":slew_volume",
    ":test_support",
    "//base",
    "//base/test:run_all_unittests",
    "//chromecast/media",
    "//chromecast/public",
    "//media",
    "//media:shared_memory_support",
    "//testing/gmock",
    "//testing/gtest",
  ]
}

source_set("test_support") {
  testonly = true

  sources = [
    "mock_alsa_wrapper.cc",
    "mock_alsa_wrapper.h",
  ]

  public_deps = [
    ":alsa_cma_backend",
  ]

  deps = [
    "//base",
    "//media",
    "//testing/gmock",
  ]
}

# This is separate from ":governor" because the associated unittest needs
# to create a Governor directly (to use test functions).
cast_shared_library("libcast_governor_1.0") {
  sources = [
    "post_processors/governor_create.cc",
  ]
  deps = [
    ":governor",
    "//chromecast/public/media",
  ]
}

source_set("governor") {
  sources = [
    "post_processors/governor.cc",
    "post_processors/governor.h",
  ]
  deps = [
    ":slew_volume",
    "//base",
    "//chromecast/base",
    "//chromecast/public/media",
  ]
  public_configs = [ "//chromecast/public:public_config" ]
}

cast_shared_library("libcast_saturated_gain_1.0") {
  sources = [
    "post_processors/saturated_gain.cc",
    "post_processors/saturated_gain.h",
  ]
  deps = [
    ":slew_volume",
    "//base",
    "//chromecast/base",
    "//chromecast/public/media",
  ]
}

source_set("post_processor_test_support") {
  testonly = true
  sources = [
    "post_processors/post_processor_unittest.cc",
    "post_processors/post_processor_unittest.h",
  ]
  deps = [
    "//base",
    "//chromecast/public/media",
    "//testing/gtest",
  ]
}

source_set("post_processor_factory") {
  sources = [
    "post_processor_factory.cc",
    "post_processor_factory.h",
  ]
  deps = [
    "//base",
    "//chromecast/public/media",
  ]
}