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https://github.com/EHfive/pulseaudio-modules-bt
[Deprecated, see https://github.com/EHfive/pulseaudio-modules-bt/issues/154] Adds Sony LDAC, aptX, aptX HD, AAC codecs (A2DP Audio) support to PulseAudio on Linux
https://github.com/EHfive/pulseaudio-modules-bt
a2dp aac aptx audio bluetooth linux
Last synced: about 2 months ago
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[Deprecated, see https://github.com/EHfive/pulseaudio-modules-bt/issues/154] Adds Sony LDAC, aptX, aptX HD, AAC codecs (A2DP Audio) support to PulseAudio on Linux
- Host: GitHub
- URL: https://github.com/EHfive/pulseaudio-modules-bt
- Owner: EHfive
- License: gpl-3.0
- Archived: true
- Created: 2018-06-02T11:31:13.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2020-12-15T16:56:38.000Z (almost 4 years ago)
- Last Synced: 2024-06-20T01:49:24.997Z (3 months ago)
- Topics: a2dp, aac, aptx, audio, bluetooth, linux
- Language: C
- Homepage:
- Size: 376 KB
- Stars: 1,752
- Watchers: 60
- Forks: 88
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# pulseaudio-modules-bt
this repo is a fork of pulseaudio bluetooth modules
and adds LDAC, APTX, APTX-HD, AAC support, extended configuration for SBC
#### Added Codecs
|Codec|Encoding(source role)|Decoding(sink role)|Sample format(s)|Sample frequencies|
|:---:|:---:|:---:|:---:|:---:|
|AAC |✔ |✔ |s16|8, 11.025, 12,16, 22.05, 24, 32, 44.1, 48, 64, 88.2, 96 khz|
|APTX | ✔| ✔ |s16|16, 32, 44.1, 48 khz|
|APTX HD| ✔| ✔ |s24||
|LDAC |✔ |✘|s16,s24,s32,f32|44.1, 48, 88.2, 96 khz|
APTX/APTX_HD sample format fixed to s32 in PA.
(ffmpeg do the sample format transformation)
#### Extended SBC configuration
Added support for manual (expert) configuration for SBC codec parameters:
* Min and Max bitpool limits (2-250)
* Sampling frequency
* Audio channel mode
* Quantization bit allocation mode
* Frequency bands number
* Audio blocks number
You can use this parameters to override and fine-tune default SBC codec config and manually setup configurations like SBC XQ, or Dual Channel HD mode.
More info about SBC configuration options can be found at [LineageOS documentation](https://lineageos.org/engineering/Bluetooth-SBC-XQ).
Also there is [interactive calculator](https://btcodecs.valdikss.org.ru/sbc-bitrate-calculator) and unofficial [device compatibility list](https://btcodecs.valdikss.org.ru/codec-compatibility) that may help you to select proper values.
Parameter-names for module-bluez5-discover and valid values provided at the table below.
NOTE: Use these parameters with caution at your own risk! Invalid or extreme "out-of-spec" configurations may sometimes even cause malfunction for some cheap BT-audio devices. Usually these malfunctions can be fixed by resetting audio-device or sometimes simply by reconnecting with valid configuration.
## Usage
### Pre-built binary packages
See the [wiki/Packages](https://github.com/EHfive/pulseaudio-modules-bt/wiki/Packages) to find pre-build binary packages for you distribution.
Please also check [issue#3](https://github.com/EHfive/pulseaudio-modules-bt/issues/3).
After installing your pre-built binary packages, see [below](#configure) to configure the module.
### Build from source
#### Make Dependencies
* pulseaudio>=11.59.1
* bluez~=5.0
* dbus
* sbc
* \[Optional] ffmpeg(libavcodec>=58, libavutil>=56) >= 4.0
* \[Optional] fdk-aac(-free)>=0.1.5: pulseaudio-modules-bt use LC-AAC only
* \[Optional] [ldacBT](https://github.com/EHfive/ldacBT)/libldac
* cmake
* pkg-config, libtool, ...
On Debian based distributions (like Ubuntu), you can install the make dependencies with:
`sudo apt-get install -y libfdk-aac-dev libavcodec-dev libpulse-dev libdbus-1-dev libsbc-dev libldacbt-abr-dev libldacbt-enc-dev libltdl-dev libbluetooth-dev`
#### Runtime Dependencies
* pulseaudio ( force preopen disabled / built with `--disable-force-preopen`)
* bluez
* dbus
* sbc
* \[ fdk-aac(-free) ]
* \[ libavcodec.so ]: APTX, APTX-HD support \[Optional]
* \[ libldac ]: LDAC encoding support, LDAC ABR support \[Optional]
#### Build
**backup original pulseaudio bt modules**
```bash
MODDIR=`pkg-config --variable=modlibexecdir libpulse`
sudo find $MODDIR -regex ".*\(bluez5\|bluetooth\).*\.so" -exec cp {} {}.bak \;
```
**pull sources**
Make sure to pull into a filesystem that supports colons (`:`) as valid characters in filename (see [#144](https://github.com/EHfive/pulseaudio-modules-bt/issues/144)). Ext4 does, while NTFS does not.
```bash
git clone https://github.com/EHfive/pulseaudio-modules-bt.git
cd pulseaudio-modules-bt
git submodule update --init
```
**install**
A. build for PulseAudio releases (e.g., v12.0, v12.2, etc.)
```bash
git -C pa/ checkout v`pkg-config libpulse --modversion|sed 's/[^0-9.]*\([0-9.]*\).*/\1/'`
mkdir build && cd build
cmake ..
make
sudo make install
```
B. or build for PulseAudio git master
```bash
git -C pa/ checkout master
mkdir build && cd build
cmake -DFORCE_LARGEST_PA_VERSION=ON ..
make
sudo make install
```
*Cmake A2DP codecs options*: `CODEC_APTX_FF`, `CODEC_APTX_HD_FF`, `CODEC_AAC_FDK`, `CODEC_LDAC`
#### Load Modules
```bash
pulseaudio -k
# if pulseaudio not restart automatically, run
pulseaudio --start
```
if you got a warning like below, you need to rebuild `pulseaudio` with `--disable-force-preopen` flag
```
pulseaudio: symbol lookup error: pulseaudio: undefined symbol: pa_a2dp_codec_sbc
```
### Connect device
Connect your bluetooth device and switch audio profile to 'A2DP Sink';
If there is only profile 'HSP/HFP' and 'off', disconnect and reconnect your device.
The issue has been fixed in bluez 5.51.
#### Module Arguments
**module-bluez5-discover arg:a2dp_config**
Encoders configurations
|Key| Value|Desc |Default|
|---|---|---|---|
|sbc_min_bp|2-250|minimum allowed bitpool|auto|
|sbc_max_bp|2-250|maximum allowed bitpool, may not be < sbc_min_bp|auto|
|sbc_freq|16k, 32k, 44k, 48k|16000/32000/44100/48000 Hz sample frequency|auto|
||auto|do not enforce sample frequency (default)|
|sbc_cmode|mono|mono channel-mode|auto|
||dual|dual channel-mode|
||stereo|stereo channel-mode|
||joint_stereo|joint stereo channel-mode|
||auto|do not enforce channel-mode (default)|
|sbc_alloc|snr|use SNR bit-allocation algorithm|auto|
||loudness|use loudness bit-allocation algorithm|
||auto|do not enforce bit-allocation algorithm (default)|
|sbc_sbands|4, 8|4 or 8 subbands|auto|
||auto|do not enforce subbands count (default)|
|sbc_blen|4, 8, 12, 16|4/8/12/16 audio blocks in one audio frame|auto|
||auto|do not enforce audio blocks count (default)|
|ldac_eqmid|hq|LDAC High Quality|auto|
||sq|LDAC Standard Quality|
||mq|LDAC Mobile use Quality|
||auto /abr|LDAC Adaptive Bit Rate|
|ldac_fmt|s16|16-bit signed (little endian)|auto|
||s24|24-bit signed|
||s32|32-bit signed|
||f32|32-bit float|
||auto|Ref default-sample-format|
|ldac_abr_t1|\|safety threshold for LDACBT_EQMID_HQ and LDACBT_EQMID_SQ|2|
|ldac_abr_t2|\|threshold for dangerous trend of TxQueueDepth|4|
|ldac_abr_t3|\|threshold for critical TxQueueDepth status|6|
|aac_bitrate_mode|\[1, 5\]|Variable Bitrate (VBR)|0|
||0|Constant Bitrate (CBR)|
|aac_afterburner||Enable/Disable AAC encoder afterburner feature|off|
|aac_fmt|s16|16-bit signed (little endian)|auto|
||s32|32-bit signed|
||auto|Ref default-sample-format|
#### Configure
edit `/etc/pulse/default.pa`
append arguments to 'load-module module-bluetooth-discover'
(module-bluetooth-discover pass all arguments to module-bluez5-discover)
# LDAC Standard Quality
load-module module-bluetooth-discover a2dp_config="ldac_eqmid=sq"
# LDAC High Quality; Force LDAC/PA PCM sample format as Float32LE
#load-module module-bluetooth-discover a2dp_config="ldac_eqmid=hq ldac_fmt=f32"
equivalent to commands below if you do not use 'module-bluetooth-discover'
load-module module-bluez5-discover a2dp_config="ldac_eqmid=sq"
#load-module module-bluez5-discover a2dp_config="ldac_eqmid=hq ldac_fmt=f32"
#### Others
see [Wiki](https://github.com/EHfive/pulseaudio-modules-bt/wiki)
## TODO
~~add ldac abr (Adaptive Bit Rate) supprot~~
~~add APTX , APTX HD Codec support using ffmpeg~~
~~add AAC support using Fraunhofer FDK AAC codec library~~
~~add codec switching support using latest blueZ's experimental feature~~
## Copyright
```
pulseaudio-modules-bt
Copyright (C) 2018-2019 Huang-Huang Bao
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
```