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serenity/Userland/Libraries/LibAudio/ClientConnection.cpp
Nick Miller 34a3d08e65 LibAudio: Sleep less when the audio buffer is full
When using `aplay` to play audio files with a sample rate of 96000,
there were occasional one-second gaps in playback. This is
because the Audio::ClientConnection sleeps for a full second when
the audio buffer is full.

One second is too long to sleep, especially for high-bitrate files.
Changing the sleep to a more reasonable value like 100 ms ensures
we attempt to enqueue again before the audio buffer runs empty.
2021-06-21 03:13:59 +04:30

50 lines
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C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibAudio/Buffer.h>
#include <LibAudio/ClientConnection.h>
namespace Audio {
ClientConnection::ClientConnection()
: IPC::ServerConnection<AudioClientEndpoint, AudioServerEndpoint>(*this, "/tmp/portal/audio")
{
}
void ClientConnection::enqueue(const Buffer& buffer)
{
for (;;) {
auto success = enqueue_buffer(buffer.anonymous_buffer(), buffer.id(), buffer.sample_count());
if (success)
break;
sleep(.1);
}
}
bool ClientConnection::try_enqueue(const Buffer& buffer)
{
return enqueue_buffer(buffer.anonymous_buffer(), buffer.id(), buffer.sample_count());
}
void ClientConnection::finished_playing_buffer(i32 buffer_id)
{
if (on_finish_playing_buffer)
on_finish_playing_buffer(buffer_id);
}
void ClientConnection::muted_state_changed(bool muted)
{
if (on_muted_state_change)
on_muted_state_change(muted);
}
void ClientConnection::main_mix_volume_changed(i32 volume)
{
if (on_main_mix_volume_change)
on_main_mix_volume_change(volume);
}
}