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output/PipeWire: move code to ::SetVolume()

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This commit is contained in:
Max Kellermann 2022-07-08 17:16:34 +02:00
parent 6857286b42
commit f55bc6682f
1 changed files with 19 additions and 11 deletions
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30
src/output/plugins/PipeWireOutputPlugin.cxx
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@ -309,6 +309,23 @@ PipeWireOutput::PipeWireOutput(const ConfigBlock &block)
}
}
/**
* Throws on error.
*
* @param volume a volume level between 0.0 and 1.0
*/
static void
SetVolume(struct pw_stream &stream, unsigned channels, float volume)
{
float value[MAX_CHANNELS];
std::fill_n(value, channels, volume * volume * volume);
if (pw_stream_set_control(&stream,
SPA_PROP_channelVolumes, channels, value,
0) != 0)
throw std::runtime_error("pw_stream_set_control() failed");
}
void
PipeWireOutput::SetVolume(float _volume)
{
@ -322,17 +339,8 @@ PipeWireOutput::SetVolume(float _volume)
const PipeWire::ThreadLoopLock lock(thread_loop);
float newvol = _volume*_volume*_volume;
if (stream != nullptr && !restore_volume) {
float vol[MAX_CHANNELS];
std::fill_n(vol, channels, newvol);
if (pw_stream_set_control(stream,
SPA_PROP_channelVolumes, channels, vol,
0) != 0)
throw std::runtime_error("pw_stream_set_control() failed");
}
if (stream != nullptr && !restore_volume)
::SetVolume(*stream, channels, _volume);
volume = _volume;
}