/// <summary>
/// Starts or resumes the clock.
/// </summary>
public void Play()
{
using (Locker.AcquireWriterLock())
{
if (Chrono.IsRunning)
{
return;
}
Chrono.Start();
}
}
/// <summary>
/// Sets a new position value atomically.
/// </summary>
/// <param name="value">The new value that the position porperty will hold.</param>
public void Update(TimeSpan value)
{
using (_locker.AcquireWriterLock())
{
var resume = _chrono.IsRunning;
_chrono.Reset();
_offsetTicks = value.Ticks;
if (resume)
{
_chrono.Start();
}
}
}
/// <summary>
/// Tries the acquire a writer lock on the unmanaged buffer.
/// Returns false if the buffer has been disposed.
/// </summary>
/// <param name="locker">The locker.</param>
/// <returns>The disposable lock</returns>
public bool TryAcquireWriterLock(out IDisposable locker)
{
locker = null;
lock (SyncLock)
{
if (m_IsDisposed)
{
return(false);
}
locker = Locker.AcquireWriterLock();
return(true);
}
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="alsoManaged"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool alsoManaged)
{
lock (SyncLock)
{
if (m_IsDisposed)
{
return;
}
if (alsoManaged)
{
// Dispose managed state (managed objects).
}
// Free unmanaged resources (unmanaged objects) and override a finalizer below.
using (Locker.AcquireWriterLock())
{
Deallocate();
}
// set large fields to null.
Locker.Dispose();
Locker = null;
m_IsDisposed = true;
}
}
/// <summary>
/// Gets or sets the <see cref="AVPacket"/> at the specified index.
/// </summary>
/// <value>
/// The <see cref="AVPacket"/>.
/// </value>
/// <param name="index">The index.</param>
/// <returns>The packet reference</returns>
private AVPacket *this[int index]
{
get
{
using (Locker.AcquireReaderLock())
{
return((AVPacket *)PacketPointers[index]);
}
}
set
{
using (Locker.AcquireWriterLock())
{
PacketPointers[index] = (IntPtr)value;
}
}
}
/// <summary>
/// Skips the specified amount requested bytes to be read.
/// </summary>
/// <param name="requestedBytes">The requested bytes.</param>
/// <exception cref="InvalidOperationException">When requested bytes GT readable count</exception>
public void Skip(int requestedBytes)
{
using (Locker.AcquireWriterLock())
{
if (requestedBytes > m_ReadableCount)
{
throw new InvalidOperationException(
$"Unable to skip {requestedBytes} bytes. Only {m_ReadableCount} bytes are available for skipping");
}
m_ReadIndex += requestedBytes;
m_ReadableCount -= requestedBytes;
if (m_ReadIndex >= m_Length)
{
m_ReadIndex = 0;
}
}
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
using (Locker.AcquireWriterLock())
{
while (PoolBlocks.Count > 0)
{
var block = PoolBlocks.Dequeue();
block.Dispose();
}
for (var i = PlaybackBlocks.Count - 1; i >= 0; i--)
{
var block = PlaybackBlocks[i];
PlaybackBlocks.RemoveAt(i);
block.Dispose();
}
}
Locker.Dispose();
Locker = null;
}
