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AudioServer: Add a "main mix volume" and a simple program to get/set it

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Give the mixer a main volume value (percent) that we scale all the
outgoing samples by (before clipping.)

Also add a simple "avol" program for querying and setting the volume:

- "avol" prints the current volume.
- "avol 200" sets the main mix volume to 200%
This commit is contained in:
Andreas Kling 2019-07-29 19:06:58 +02:00
parent 2feddc58bb
commit 15afc88ffe
8 changed files with 72 additions and 0 deletions
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16
Libraries/LibAudio/AClientConnection.cpp
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@ -30,3 +30,19 @@ void AClientConnection::enqueue(const ABuffer& buffer)
sleep(1);
}
}
int AClientConnection::get_main_mix_volume()
{
ASAPI_ClientMessage request;
request.type = ASAPI_ClientMessage::Type::GetMainMixVolume;
auto response = sync_request(request, ASAPI_ServerMessage::Type::DidGetMainMixVolume);
return response.value;
}
void AClientConnection::set_main_mix_volume(int volume)
{
ASAPI_ClientMessage request;
request.type = ASAPI_ClientMessage::Type::SetMainMixVolume;
request.value = volume;
sync_request(request, ASAPI_ServerMessage::Type::DidSetMainMixVolume);
}