/// <inheritdoc />
protected override unsafe void Dispose(bool ADisposing)
{
switch (Mode)
{
case StreamOpenMode.Input:
AVFormatContext.CloseInput(ref Ref);
break;
case StreamOpenMode.Output:
// Close output AVIOContext first.
Ref <Unsafe.AVIOContext> pb = Ref.Ptr->pb;
Ref.Ptr->pb = null;
AVIO.Close(ref pb);
AVFormatContext.Free(ref Ref);
break;
case StreamOpenMode.Closed:
AVFormatContext.Free(ref Ref);
break;
}
Mode = StreamOpenMode.Closed;
base.Dispose(ADisposing);
}
/// <summary>
/// Open the output context.
/// </summary>
/// <param name="AUrl">The output URL.</param>
/// <param name="AMuxer">The <see cref="Muxer"/>.</param>
/// <param name="AOptions">The options <see cref="Dictionary"/>.</param>
/// <exception cref="ObjectDisposedException">This instance is disposed.</exception>
/// <exception cref="InvalidOperationException">Stream is already open.</exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="AUrl"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="AMuxer"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="FFmpegError">Error opening context.</exception>
public unsafe void Open(
string AUrl,
Muxer AMuxer,
[CanBeNull] Dictionary AOptions = null
)
{
ThrowIfDisposed();
if (Mode != StreamOpenMode.Closed)
{
throw new InvalidOperationException("Stream is already open.");
}
if (AUrl == null)
{
throw new ArgumentNullException(nameof(AUrl));
}
if (AMuxer == null)
{
throw new ArgumentNullException(nameof(AMuxer));
}
Ref <Unsafe.AVIOContext> pb = Ref.Ptr->pb;
Ref <Unsafe.AVDictionary> opt = null;
if (AOptions != null)
{
opt = AOptions.Ref;
}
try
{
AVIO.Open(ref pb, AUrl, AVIOOpenFlags.AVIO_FLAG_WRITE, null, ref opt);
Ref.Ptr->pb = pb;
}
finally
{
if (AOptions != null)
{
// Options were provided, update them.
AOptions.Ref = opt;
}
else
{
// Options are unwanted, free them.
AVDictionary.Free(ref opt);
}
}
Ref.Ptr->oformat = AMuxer.Ref;
Mode = StreamOpenMode.Output;
State = OutputState.Opened;
}
