public void Dispose() { if (_disposed) { return; } _disposed = true; FFmpegAudioPInvoke.RemoveAudioDecoder(_decoderHandle); if (_resamplerHandle != IntPtr.Zero) { FFmpegAudioPInvoke.RemoveAudioResampler(_resamplerHandle); } GC.SuppressFinalize(this); }
/// <exception cref="DecoderException"></exception> public unsafe bool TryDecode(RawAudioFrame rawAudioFrame) { if (rawAudioFrame is RawAACFrame aacFrame) { Debug.Assert(aacFrame.ConfigSegment.Array != null, "aacFrame.ConfigSegment.Array != null"); if (!_extraData.SequenceEqual(aacFrame.ConfigSegment)) { if (_extraData.Length == aacFrame.ConfigSegment.Count) { Buffer.BlockCopy(aacFrame.ConfigSegment.Array, aacFrame.ConfigSegment.Offset, _extraData, 0, aacFrame.ConfigSegment.Count); } else _extraData = aacFrame.ConfigSegment.ToArray(); fixed(byte *extradataPtr = &_extraData[0]) { int resultCode = FFmpegAudioPInvoke.SetAudioDecoderExtraData(_decoderHandle, (IntPtr)extradataPtr, aacFrame.ConfigSegment.Count); if (resultCode != 0) { throw new DecoderException($"An error occurred while setting audio extra data, {_audioCodecId} codec, code: {resultCode}"); } } } } Debug.Assert(rawAudioFrame.FrameSegment.Array != null, "rawAudioFrame.FrameSegment.Array != null"); fixed(byte *rawBufferPtr = &rawAudioFrame.FrameSegment.Array[rawAudioFrame.FrameSegment.Offset]) { int resultCode = FFmpegAudioPInvoke.DecodeFrame(_decoderHandle, (IntPtr)rawBufferPtr, rawAudioFrame.FrameSegment.Count, out int sampleRate, out int bitsPerSample, out int channels); _currentRawFrameTimestamp = rawAudioFrame.Timestamp; if (resultCode != 0) { return(false); } if (rawAudioFrame is RawG711Frame g711Frame) { sampleRate = g711Frame.SampleRate; channels = g711Frame.Channels; } if (_currentFrameFormat.SampleRate != sampleRate || _currentFrameFormat.BitPerSample != bitsPerSample || _currentFrameFormat.Channels != channels) { _currentFrameFormat = new AudioFrameFormat(sampleRate, bitsPerSample, channels); if (_resamplerHandle != IntPtr.Zero) { FFmpegAudioPInvoke.RemoveAudioResampler(_resamplerHandle); } } } return(true); }