Mirko Bonadei 86d053c2db Use source_sets in component builds and static_library in release builds.
Static libraries don't guarantee that an exported symbol gets linked
into a shared library (and in order to support Chromium's component
build mode, WebRTC needs to be linked as a shared library).

Source sets always pass all the object files to the linker.

On the flip side, source_sets link more object files in release builds
and to avoid this, this CL introduces a the GN template "rtc_library" that
expands to static_library during release builds and to source_set during
component builds.

See: https://gn.googlesource.com/gn/+/master/docs/reference.md#func_source_set

Bug: webrtc:9419
Change-Id: I4667e820c2b3fcec417becbd2034acc13e4f04fe
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/157168
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#29525}
2019-10-17 21:17:18 +00:00

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# Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
import("../../webrtc.gni")
rtc_library("pacing") {
# Client code SHOULD NOT USE THIS TARGET, but for now it needs to be public
# because there exists client code that uses it.
# TODO(bugs.webrtc.org/9808): Move to private visibility as soon as that
# client code gets updated.
visibility = [ "*" ]
sources = [
"bitrate_prober.cc",
"bitrate_prober.h",
"paced_sender.cc",
"paced_sender.h",
"pacing_controller.cc",
"pacing_controller.h",
"packet_router.cc",
"packet_router.h",
"round_robin_packet_queue.cc",
"round_robin_packet_queue.h",
"rtp_packet_pacer.h",
]
deps = [
":interval_budget",
"..:module_api",
"../../api:function_view",
"../../api/rtc_event_log",
"../../api/transport:field_trial_based_config",
"../../api/transport:network_control",
"../../api/transport:webrtc_key_value_config",
"../../api/units:data_rate",
"../../api/units:data_size",
"../../api/units:time_delta",
"../../api/units:timestamp",
"../../logging:rtc_event_bwe",
"../../logging:rtc_event_pacing",
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
"../../rtc_base/experiments:field_trial_parser",
"../../system_wrappers",
"../../system_wrappers:metrics",
"../remote_bitrate_estimator",
"../rtp_rtcp",
"../rtp_rtcp:rtp_rtcp_format",
"../utility",
"//third_party/abseil-cpp/absl/memory",
"//third_party/abseil-cpp/absl/types:optional",
]
}
rtc_library("interval_budget") {
sources = [
"interval_budget.cc",
"interval_budget.h",
]
deps = [
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
]
}
if (rtc_include_tests) {
rtc_library("pacing_unittests") {
testonly = true
sources = [
"bitrate_prober_unittest.cc",
"interval_budget_unittest.cc",
"paced_sender_unittest.cc",
"pacing_controller_unittest.cc",
"packet_router_unittest.cc",
]
deps = [
":interval_budget",
":pacing",
"../../api/units:data_rate",
"../../api/units:time_delta",
"../../modules/utility:mock_process_thread",
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
"../../rtc_base:rtc_base_tests_utils",
"../../rtc_base/experiments:alr_experiment",
"../../system_wrappers",
"../../system_wrappers:field_trial",
"../../test:field_trial",
"../../test:test_support",
"../rtp_rtcp",
"../rtp_rtcp:mock_rtp_rtcp",
"../rtp_rtcp:rtp_rtcp_format",
]
}
}