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/*
* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "UserSampleQueue.h"
namespace Audio {
void UserSampleQueue::append(FixedArray<Sample>&& samples)
{
Threading::MutexLocker lock(m_sample_mutex);
if (m_samples_to_discard != 0)
m_backing_samples = m_backing_samples.release_slice(m_samples_to_discard);
m_backing_samples.append(move(samples));
fix_spans();
}
void UserSampleQueue::clear()
{
discard_samples(size());
}
void UserSampleQueue::fix_spans()
{
Threading::MutexLocker lock(m_sample_mutex);
m_enqueued_samples = m_backing_samples.spans();
m_samples_to_discard = 0;
}
Sample UserSampleQueue::operator[](size_t index)
{
Threading::MutexLocker lock(m_sample_mutex);
return m_enqueued_samples[index];
}
void UserSampleQueue::discard_samples(size_t count)
{
Threading::MutexLocker lock(m_sample_mutex);
m_samples_to_discard += count;
m_enqueued_samples = m_enqueued_samples.slice(count);
}
size_t UserSampleQueue::size()
{
Threading::MutexLocker lock(m_sample_mutex);
return m_enqueued_samples.size();
}
size_t UserSampleQueue::remaining_samples()
{
Threading::MutexLocker lock(m_sample_mutex);
VERIFY(m_backing_samples.size() >= m_samples_to_discard);
return m_backing_samples.size() - m_samples_to_discard;
}
bool UserSampleQueue::is_empty()
{
Threading::MutexLocker lock(m_sample_mutex);
return m_enqueued_samples.is_empty();
}
}
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