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Commit 8e29cde3 authored by Antoine SOULIER's avatar Antoine SOULIER
Browse files

LE Audio: Add ASRC in the software audio pipeline 

Bug: 279560965
Bug: 312273987
Test: atest asrc_resampler_test
Tag: #feature
Change-Id: Ib6e44620940e98b586adb3088909c60f4cea92bd
parent 57494231

TEST_MAPPING

+3 −0
Original line number Diff line number Diff line
@@ -324,6 +324,9 @@ 
    },

    {

      "name": "bluetooth_test_gdx_unit"

    },

    {

      "name": "asrc_resampler_test"

    }

  ]

}

flags/leaudio.aconfig

+7 −0
Original line number Diff line number Diff line
@@ -55,3 +55,10 @@ flag { 
    description: "Apply asymetric PHY setting for unidirectional CIS"

    bug: "314176433"

}



flag {

    name: "leaudio_hal_client_asrc"

    namespace: "bluetooth"

    description: "Sync audio stream with the bluetooth link clock"

    bug: "312273987"

}

system/bta/Android.bp

+38 −0
Original line number Diff line number Diff line
@@ -100,7 +100,9 @@ cc_library_static { 
        "hh/bta_hh_le.cc",

        "hh/bta_hh_main.cc",

        "hh/bta_hh_utils.cc",

        "le_audio/audio_hal_client/asrc_tables.cc",

        "le_audio/audio_hal_client/audio_sink_hal_client.cc",

        "le_audio/audio_hal_client/audio_source_hal_asrc.cc",

        "le_audio/audio_hal_client/audio_source_hal_client.cc",

        "le_audio/broadcaster/broadcaster.cc",

        "le_audio/broadcaster/broadcaster_types.cc",
@@ -806,8 +808,10 @@ cc_test { 
        ":TestMockBtaLeAudioHalVerifier",

        ":TestMockMainShim",

        ":TestStubOsi",

        "le_audio/audio_hal_client/asrc_tables.cc",

        "le_audio/audio_hal_client/audio_hal_client_test.cc",

        "le_audio/audio_hal_client/audio_sink_hal_client.cc",

        "le_audio/audio_hal_client/audio_source_hal_asrc.cc",

        "le_audio/audio_hal_client/audio_source_hal_client.cc",

        "le_audio/client_parser.cc",

        "le_audio/client_parser_test.cc",
@@ -1243,3 +1247,37 @@ cc_test { 
    },

    cflags: ["-Wno-unused-parameter"],

}



cc_library_host_shared {

    name: "libasrc_resampler_test",

    defaults: ["bluetooth_cflags"],

    srcs: [

        "le_audio/audio_hal_client/asrc_resampler_test.cc",

        "le_audio/audio_hal_client/asrc_tables.cc",

    ],

    static_libs: [

        "libchrome",

        "libflatbuffers-cpp",

    ],

    stl: "libc++_static",

    include_dirs: [

        "packages/modules/Bluetooth/system",

        "packages/modules/Bluetooth/system/gd",

    ],

    generated_headers: [

        "BluetoothGeneratedDumpsysDataSchema_h",

    ],

}



python_test_host {

    name: "asrc_resampler_test",

    main: "le_audio/audio_hal_client/asrc_resampler_test.py",

    srcs: ["le_audio/audio_hal_client/asrc_resampler_test.py"],

    libs: ["mobly"],

    data: [":libasrc_resampler_test"],

    test_config: "le_audio/audio_hal_client/asrc_resampler_test.config",

    test_suites: ["general-tests"],

    test_options: {

        unit_test: false,

    },

}

system/bta/BUILD.gn

+2 −0
Original line number Diff line number Diff line
@@ -89,7 +89,9 @@ static_library("bta") { 
    "jv/bta_jv_act.cc",

    "jv/bta_jv_api.cc",

    "jv/bta_jv_cfg.cc",

    "le_audio/audio_hal_client/asrc_tables.cc",

    "le_audio/audio_hal_client/audio_sink_hal_client.cc",

    "le_audio/audio_hal_client/audio_source_hal_asrc.cc",

    "le_audio/audio_hal_client/audio_source_hal_client.cc",

    "le_audio/broadcaster/broadcaster.cc",

    "le_audio/broadcaster/broadcaster_types.cc",

system/bta/le_audio/audio_hal_client/asrc_butter.py

0 → 100755
+23 −0
Original line number Diff line number Diff line 
#!/usr/bin/env python3

#

# Copyright 2023 The Android Open Source Project

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#



import numpy as np

import scipy.signal as signal



b, a = signal.butter(2, 1. / 60)

print(('a:' + ' {:17.10e}' * 2).format(*a[1:]))

print(('b:' + ' {:17.10e}' * 3).format(*b))