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@ -7,23 +7,64 @@
<img src="Images/README/Screenshot.png" width="340" height="342" /> <img src="Images/README/Screenshot.png" width="340" height="342" />
- Automatically pauses your music player when other audio starts playing and unpauses it afterwards [Overview](#overview)<br/>
- Per-application volume, boost quiet apps &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Auto-pause music](#auto-pause-music)<br/>
- Record system audio <br><br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Application volume](#application-volume)<br/>
- No restart required to install &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[Recording system audio](#recording-system-audio)<br/>
- Runs entirely in userspace [Download](#download)<br/>
[Build and Install](#build-and-install)</br>
[Uninstall](#uninstall)<br/>
[Troubleshooting](#troubleshooting)<br/>
[Related Projects](#related-projects)<br/>
[License](#license)<br/>
## Download # Overview
### Version 0.3.1 **Background Music** gives you control over multiple sources of audio on your desktop without navigating each individual application. It provides the following functionalities:
<a href="https://github.com/kyleneideck/BackgroundMusic/releases/download/v0.3.1/BackgroundMusic-0.3.1.pkg"><img + Automatically pause/unpause your music player when other audio sources are playing/stopped
src="Images/README/pkg-icon.png" width="32" height="32" align="absmiddle" /> + Per-application volume control
BackgroundMusic-0.3.1.pkg</a> (571 KB) + Record system audio
+ No restart required to install
+ Runs entirely in userspace
Still very much in alpha. ##### *Note: Background Music is still in alpha.*
**Requires macOS 10.10+**. Should work on 10.9, but I haven't tried it. ## Auto-pause music
**Background Music** automatically pauses your music player when a second audio source is playing, and unpauses the player when the second source has stopped.
The auto-pause feature currently supports following music players:
+ iTunes
+ [Spotify](https://www.spotify.com)
+ [VLC](https://www.videolan.org/vlc/)
+ [VOX](https://vox.rocks/mac-music-player)
+ [Decibel](https://sbooth.org/Decibel/)
+ [Hermes](http://hermesapp.org/)
+ [Swinsian](https://swinsian.com/)
+ [GPMDP](https://www.googleplaymusicdesktopplayer.com/)
Adding support for a new music player is straight-forward.<sup id="a1">[1](#f1)</sup> If you don't know how to program, or just don't feel
like it, feel free to [create an issue](https://github.com/kyleneideck/BackgroundMusic/issues/new). Otherwise, see
[BGMMusicPlayer.h](BGMApp/BGMApp/Music%20Players/BGMMusicPlayer.h).
## Application volume
**Background Music** provides a volume slider for each application running your system. You can boost quiet applications above their maximum volume.
## Recording system audio
You can record system audio with **Background Music**. With **Background Music** running, launch **QuickTime Player** and select **File > New Audio Recording** (or **New Screen Recording**, **New Movie Recording**). Then click the dropdown menu (`⌄`) next to the record button and select **Background Music** as the input device.
You can record system audio and a microphone together by creating an [aggregate
device](https://support.apple.com/en-us/HT202000) that combines your input device (usually Built-in Input) with
the **Background Music** device. You can create the aggregate device using the **Audio MIDI Setup** utility under
***/Applications/Utilities***.
# Download
**Requires macOS 10.10+**.
> <sub>MD5: 89a74e9379041abfd6a55471f3e61b94</sub><br/> > <sub>MD5: 89a74e9379041abfd6a55471f3e61b94</sub><br/>
> <sub>SHA256: 070bef360bff9e52639a4fbf23ee7052b9645004a431af6ad62997cfed99e2d7</sub><br/> > <sub>SHA256: 070bef360bff9e52639a4fbf23ee7052b9645004a431af6ad62997cfed99e2d7</sub><br/>
@ -31,135 +72,112 @@ Still very much in alpha.
> [sig](https://github.com/kyleneideck/BackgroundMusic/releases/download/v0.3.1/BackgroundMusic-0.3.1.pkg.asc), > [sig](https://github.com/kyleneideck/BackgroundMusic/releases/download/v0.3.1/BackgroundMusic-0.3.1.pkg.asc),
> [key (0595DF814E41A6F69334C5E2CAA8D9B8E39EC18C)](https://bearisdriving.com/kyle-neideck.gpg)</sub> > [key (0595DF814E41A6F69334C5E2CAA8D9B8E39EC18C)](https://bearisdriving.com/kyle-neideck.gpg)</sub>
We also have [snapshot builds](https://github.com/kyleneideck/BackgroundMusic/releases). You can download the current prebuilt version of **Background Music** using the following options. We also have [snapshot builds](https://github.com/kyleneideck/BackgroundMusic/releases).
### Or install using [Homebrew](https://brew.sh/) ### Option 1
Download **version 0.3.1**:
<a href="https://github.com/kyleneideck/BackgroundMusic/releases/download/v0.3.1/BackgroundMusic-0.3.1.pkg"><img
src="Images/README/pkg-icon.png" width="32" height="32" align="absmiddle" />
BackgroundMusic-0.3.1.pkg</a> (571 KB)
### Option 2
Install using [Homebrew](https://brew.sh/) by running the following command in **Terminal**:
```bash ```bash
brew cask install background-music brew cask install background-music
``` ```
If you want the snapshot version: If you want the snapshot version, run:
```bash ```bash
brew tap homebrew/cask-versions brew tap homebrew/cask-versions
brew cask install background-music-pre brew cask install background-music-pre
``` ```
## Auto-pause music # Build and install
Background Music can pause your music player app when other audio starts playing and unpause it afterwards. The idea is If you need the latest version of **Background Music**, you can download from the source on github using the following options. Building should take less than a minute. You need [Xcode](https://developer.apple.com/xcode/download/) version
that when I'm listening to music and pause it to watch a video or something I always forget to unpause it afterwards. So
this keeps me from wearing headphones for hours listening to nothing.
So far iTunes, [Spotify](https://www.spotify.com), [VLC](https://www.videolan.org/vlc/),
[VOX](https://vox.rocks/mac-music-player), [Decibel](https://sbooth.org/Decibel/), [Hermes](http://hermesapp.org/),
[Swinsian](https://swinsian.com/) and [GPMDP](https://www.googleplaymusicdesktopplayer.com/) are supported. Adding
support for a new music player should only take a few minutes<sup id="a1">[1](#f1)</sup> -- see
[BGMMusicPlayer.h](BGMApp/BGMApp/Music%20Players/BGMMusicPlayer.h). If you don't know how to program, or just don't feel
like it, feel free to [create an issue](https://github.com/kyleneideck/BackgroundMusic/issues/new).
## App volumes
Background Music has a volume slider for each app running on the system. I mostly use this to boost quiet apps above
their normal maximum volume.
## Recording system audio
With Background Music running, open QuickTime Player and go `File > New Audio Recording...` (or movie/screen). Then
click the arrow next to the record button that looks like `⌄` and select `Background Music` as the input device.
You should be able to record system audio and a microphone together by creating an [aggregate
device](https://support.apple.com/en-us/HT202000) that combines your input device (usually Built-in Input) with
the Background Music device. You can create the aggregate device using the Audio MIDI Setup utility from
`/Applications/Utilities`.
## Install from source
Building should take less than a minute, but you'll need [Xcode](https://developer.apple.com/xcode/download/) version
8 or higher. 8 or higher.
If you're comfortable with it, you can just paste the following at a Terminal prompt. ### Option 1
<!-- 1. Open **Terminal**.
Uses /bin/bash instead of just bash on the off chance that someone has a non standard Bash in their $PATH, but 2. Copy and paste the following command into **Terminal**:
it doesn't do that for Tar or cURL because I'm fairly sure any versions of them should work here. That said,
build_and_install.sh doesn't call most things by absolute paths yet anyway.
Uses "gzcat - | tar x" instead of "tar xz" because gzcat will also check the file's integrity (gzip files
include a checksum), which makes sure we can't run a half-downloaded copy of build_and_install.sh.
-->
```shell ```shell
(set -eo pipefail; URL='https://github.com/kyleneideck/BackgroundMusic/archive/master.tar.gz'; \ (set -eo pipefail; URL='https://github.com/kyleneideck/BackgroundMusic/archive/master.tar.gz'; \
cd $(mktemp -d); echo Downloading $URL to $(pwd); curl -qfL# $URL | gzcat - | tar x && \ cd $(mktemp -d); echo Downloading $URL to $(pwd); curl -qfL# $URL | gzcat - | tar x && \
/bin/bash BackgroundMusic-master/build_and_install.sh -w && rm -rf BackgroundMusic-master) /bin/bash BackgroundMusic-master/build_and_install.sh -w && rm -rf BackgroundMusic-master)
``` ```
This command uses `/bin/bash` instead of `bash` in case someone has a nonstandard Bash in their `$PATH`. However, it doesn't do this for `tar` or `curl`. In addition, `build_and_install.sh` doesn't call programs by absolute paths. This command also uses `gzcat - | tar x` instead of `tar xz` because `gzcat` will also check the file's integrity (gzip files
include a checksum), and will ensure that a half-downloaded copy of `build_and_install.sh` doesn't run.
Otherwise, to build and install from source:
- Clone or [download](https://github.com/kyleneideck/BackgroundMusic/archive/master.zip) the project. ### Option 2
- If the project is in a zip, unzip it.
- Open `Terminal.app` and [change directory](https://github.com/0nn0/terminal-mac-cheatsheet#core-commands) to the If you are not comfortable using the single-line command above, you can manually build and install from the source on github using the following steps:
1. Clone or [download](https://github.com/kyleneideck/BackgroundMusic/archive/master.zip) the project.
2. If the project is in a zip, unzip it.
3. Open **Terminal** and [change the directory](https://github.com/0nn0/terminal-mac-cheatsheet#core-commands) to the
directory containing the project. directory containing the project.
- Run the following command: `/bin/bash build_and_install.sh`. 4. Run: `/bin/bash build_and_install.sh`.
The script restarts the system audio process (coreaudiod) at the end of the installation, so you might want to pause any The script restarts the system audio process (coreaudiod) at the end of the installation, so you need to pause any
apps playing audio. applications playing audio.
Additional detailed installation instructions can be found on [the To manually build and install, see [MANUAL_INSTALL.md](https://github.com/kyleneideck/BackgroundMusic/blob/master/MANUAL-INSTALL.md).
Wiki](https://github.com/kyleneideck/BackgroundMusic/wiki/Installation).
## Uninstall # Uninstall
- Run the `uninstall.sh` script (using `Terminal.app`) to remove Background Music from your system. You should be able To uninstall **Background Music** from your system, follow these steps:
to find it in `/Applications/Background Music.app/Contents/Resources/uninstall.sh`, but if not you can [download the
project](https://github.com/kyleneideck/BackgroundMusic/archive/master.zip) again.
- Go to the Sound section in System Preferences and change your default output device at least once. (If you only have
one device now, either use `Audio MIDI Setup.app` to create a temporary aggregate device, restart any audio apps that
have stopped working or just restart your system.)
### Manual Uninstall 1. Open **Terminal**.
2. To locate `uninstall.sh`, run:`cd /Applications/Background\ Music.app/Contents/Resources/`.
3. Run: `sh uninstall.sh`.
Try following the instructions in [`MANUAL-UNINSTALL.md`](MANUAL-UNINSTALL.md) if `uninstall.sh` fails. (You might If you cannot locate `uninstall.sh`, you can [download the project](https://github.com/kyleneideck/BackgroundMusic/archive/master.zip) again.
consider submitting a bug report, too.)
## Troubleshooting To manually uninstall, see [MANUAL_UNINSTALL.md](https://github.com/kyleneideck/BackgroundMusic/blob/master/MANUAL-UNINSTALL.md).
If Background Music crashes and your audio stops working, open the Sound panel in System Preferences and change your # Troubleshooting
system's default output device to something other than the Background Music device. If it already is, it might help to
If **Background Music** crashes and your audio stops working, open **System Preferences > Sound** and change your
system's default output device to something other than the **Background Music** device. If it already is, then
change the default device and then change it back again. change the default device and then change it back again.
Failing that, you might have to uninstall. Consider filing a bug report if you do. If this does not work, you might have to uninstall. Consider filing a bug report if you do.
## Known issues ## Known issues and solutions
- Setting an app's volume above 50% can cause [clipping](https://en.wikipedia.org/wiki/Clipping_(audio)). Currently, the - **Setting an application's volume above 50% can cause [clipping](https://en.wikipedia.org/wiki/Clipping_(audio)).**
best solution is to instead set your overall volume to max and lower the volumes of other apps.
- VLC automatically pauses iTunes/Spotify when it starts playing something, but that stops Background Music from
unpausing your music afterwards. To workaround it, open VLC's preferences, click `Show All`, go `Interface` > `Main
interfaces` > `macosx` and change `Control external music players` to either `Do nothing` or `Pause and resume
iTunes/Spotify`.
Similarly, Skype pauses iTunes during calls. If you want to disable that, uncheck `Pause iTunes during calls` on the - Set your volume to its maximum level and lower the volumes of other applications.
General tab of Skype's preferences.
- Plugging in or unplugging headphones when Background Music isn't running can silence system audio. To fix it, go to
the Sound section in System Preferences, click the Output tab and change your default output device to something other
than the Background Music device. Alternatively, you may Option+Click on the Sound icon in the menu bar to select a
different output device.
This happens when macOS remembers that the Background Music device was your default audio device the last time you - **VLC pauses iTunes or Spotify when playing, and stops Background Music from unpausing your music afterwards.**
last used (or didn't use) headphones.
- [A Chrome bug](https://bugs.chromium.org/p/chromium/issues/detail?id=557620) can stop Chrome from switching to the
Background Music device after you open Background Music. Chrome's audio will still play, but Background Music won't be
aware of it.
- Some apps play notification sounds that are only just long enough to trigger an auto-pause. The only workaround right
now is to increase the `kPauseDelayNSec` constant in [BGMAutoPauseMusic.mm](/BGMApp/BGMApp/BGMAutoPauseMusic.mm).
That will make your music overlap the other audio for longer, though, so you don't want to increase it too much. See
[#5](https://github.com/kyleneideck/BackgroundMusic/issues/5) for details.
- Plenty more. Some are in listed in [TODO.md](/TODO.md).
## Related projects - Under VLC's preferences, select **Show All**. Navigate to **Interface > Main interfaces > macosx** and change *Control external music players* to either *Do nothing* or *Pause and resume iTunes/Spotify*.
- **Skype pauses iTunes during calls.**
- To disable this, uncheck *Pause iTunes during calls* on the **General** tab of **Skype**'s preferences.
- **Plugging in or unplugging headphones when Background Music isn't running causes silence in the system audio.**
- Navigate to **System Preferences > Sound**. Click the **Output** tab and change your default output device to something other than the **Background Music** device. Alternatively, press **Option + Click** on the sound icon within the menu bar to select a different output device. This happens when macOS remembers that the **Background Music** device was your default audio device the last time you used (or didn't use) headphones.
- **[A Chrome bug](https://bugs.chromium.org/p/chromium/issues/detail?id=557620) stops Chrome from switching to the Background Music device after you open Background Music.**
- Chrome's audio will still play, but **Background Music** won't be aware of it.
- **Some applications play notification sounds that are only just long enough to trigger an auto-pause.**
- Increase the `kPauseDelayNSec` constant in [BGMAutoPauseMusic.mm](/BGMApp/BGMApp/BGMAutoPauseMusic.mm). It will increase your music's overlap time over other audio, so don't increase it too much. See [#5](https://github.com/kyleneideck/BackgroundMusic/issues/5) for details.
### Other issues
Some are in listed in [TODO.md](/TODO.md).
# Related projects
- [Core Audio User-Space Driver - [Core Audio User-Space Driver
Examples](https://developer.apple.com/library/mac/samplecode/AudioDriverExamples/Introduction/Intro.html) Examples](https://developer.apple.com/library/mac/samplecode/AudioDriverExamples/Introduction/Intro.html)
@ -191,7 +209,7 @@ Failing that, you might have to uninstall. Consider filing a bug report if you d
Copyright © 2016-2019 [Background Music contributors](https://github.com/kyleneideck/BackgroundMusic/graphs/contributors). Copyright © 2016-2019 [Background Music contributors](https://github.com/kyleneideck/BackgroundMusic/graphs/contributors).
Licensed under [GPLv2](https://www.gnu.org/licenses/gpl-2.0.html), or any later version. Licensed under [GPLv2](https://www.gnu.org/licenses/gpl-2.0.html), or any later version.
Background Music includes code from: **Background Music** includes code from:
- [Core Audio User-Space Driver - [Core Audio User-Space Driver
Examples](https://developer.apple.com/library/mac/samplecode/AudioDriverExamples/Introduction/Intro.html), [original Examples](https://developer.apple.com/library/mac/samplecode/AudioDriverExamples/Introduction/Intro.html), [original