Alex Loiko 2bac896d5e Adaptive Digital gain control structure.
This CL defines the control flow of the adaptive AGC. It also defines
method and class stubs.

Contents:
1. Divide the 'agc2' build target into 'fixed_digital' and
'adaptive_digital'.
1. Update the dependencies of everything that depended on 'agc2'.
2. Define the sub-modules of the adaptive digital AGC 2. They are:
   1. Level Estimator - it gets the energy and a speech probability
      and updates a speech level estimate.
   2. Noise Estimator - it gets an immutable view of the speech frame
      and updates the noise level estimate
   3. Gain applier - it gets the speech frame, the current speech and
      noise estimates, and the speech probability. It finds a gain to
      apply and applies it.
   4. AdaptiveAgc - sets up and controls the sub-modules described
      above.

Bug: webrtc:7494
Change-Id: Ib7ccd8924e94eead0bc5f935b5d8a12e06e24fd1
Reviewed-on: https://webrtc-review.googlesource.com/64440
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Commit-Queue: Alex Loiko <aleloi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22628}
2018-03-27 14:12:50 +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")
group("audio_mixer") {
deps = [
":audio_frame_manipulator",
":audio_mixer_impl",
]
}
rtc_static_library("audio_mixer_impl") {
sources = [
"audio_mixer_impl.cc",
"audio_mixer_impl.h",
"default_output_rate_calculator.cc",
"default_output_rate_calculator.h",
"frame_combiner.cc",
"frame_combiner.h",
"output_rate_calculator.h",
]
public = [
"audio_mixer_impl.h",
"default_output_rate_calculator.h", # For creating a mixer with limiter disabled.
"frame_combiner.h",
]
configs += [ "../audio_processing:apm_debug_dump" ]
deps = [
":audio_frame_manipulator",
"..:module_api",
"../..:webrtc_common",
"../../:typedefs",
"../../api:array_view",
"../../api/audio:audio_mixer_api",
"../../audio/utility:audio_frame_operations",
"../../common_audio",
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
"../../system_wrappers",
"../../system_wrappers:field_trial_api",
"../../system_wrappers:metrics_api",
"../audio_processing",
"../audio_processing:apm_logging",
"../audio_processing:audio_frame_view",
"../audio_processing/agc2:fixed_digital",
]
}
rtc_static_library("audio_frame_manipulator") {
visibility = [
":*",
"../../modules:*",
]
sources = [
"audio_frame_manipulator.cc",
"audio_frame_manipulator.h",
]
deps = [
"..:module_api",
"../../audio/utility:audio_frame_operations",
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
]
}
if (rtc_include_tests) {
rtc_source_set("audio_mixer_unittests") {
testonly = true
sources = [
"audio_frame_manipulator_unittest.cc",
"audio_mixer_impl_unittest.cc",
"frame_combiner_unittest.cc",
"gain_change_calculator.cc",
"gain_change_calculator.h",
"sine_wave_generator.cc",
"sine_wave_generator.h",
]
deps = [
":audio_frame_manipulator",
":audio_mixer_impl",
"..:module_api",
"../../api:array_view",
"../../api/audio:audio_mixer_api",
"../../audio/utility:audio_frame_operations",
"../../rtc_base:checks",
"../../rtc_base:rtc_base_approved",
"../../rtc_base:rtc_task_queue_for_test",
"../../test:test_support",
]
}
rtc_executable("audio_mixer_test") {
testonly = true
sources = [
"audio_mixer_test.cc",
]
deps = [
":audio_mixer_impl",
"../../api/audio:audio_mixer_api",
"../../common_audio",
"../../rtc_base:rtc_base_approved",
"../../system_wrappers:system_wrappers_default",
]
}
}