Ejemplo n.º 1
0
        protected void SetTargetStream(Stream stream, MFMediaType inputMediaType, MFMediaType targetMediaType, Guid containerType)
        {
            IMFAttributes attributes = null;

            try
            {
                _targetStream = MediaFoundationCore.IStreamToByteStream(new ComStream(stream));

                MFByteStreamCapsFlags flags = MFByteStreamCapsFlags.None;
                int result = _targetStream.GetCapabilities(ref flags);

                attributes = MediaFoundationCore.CreateEmptyAttributes(2);
                attributes.SetUINT32(MediaFoundationAttributes.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
                attributes.SetGUID(MediaFoundationAttributes.MF_TRANSCODE_CONTAINERTYPE, containerType);

                _sinkWriter = MediaFoundationCore.CreateSinkWriterFromMFByteStream(_targetStream, attributes);

                _streamIndex = _sinkWriter.AddStream(targetMediaType);
                _sinkWriter.SetInputMediaType(_streamIndex, inputMediaType, null);

                _inputMediaType       = inputMediaType;
                _targetMediaType      = targetMediaType;
                _sourceBytesPerSecond = inputMediaType.AverageBytesPerSecond;

                //initialize the sinkwriter
                _sinkWriter.BeginWriting();
            }
            catch (Exception)
            {
                if (_sinkWriter != null)
                {
                    _sinkWriter.Dispose();
                    _sinkWriter = null;
                }
                if (_targetStream != null)
                {
                    _targetStream.Close();
                    Marshal.ReleaseComObject(_targetStream);
                    _targetStream = null;
                }
                throw;
            }
            finally
            {
                if (attributes != null)
                {
                    Marshal.ReleaseComObject(attributes);
                }
            }
        }
        /// <summary>
        ///     Sets and initializes the targetstream for the encoding process.
        /// </summary>
        /// <param name="stream">Stream which should be used as the targetstream.</param>
        /// <param name="inputMediaType">Mediatype of the raw input data to encode.</param>
        /// <param name="targetMediaType">Mediatype of the encoded data.</param>
        /// <param name="containerType">Container type which should be used.</param>
        protected void SetTargetStream(Stream stream, MFMediaType inputMediaType, MFMediaType targetMediaType,
                                       Guid containerType)
        {
            MFAttributes attributes = null;

            try
            {
                _targetBaseStream = new ComStream(stream);
                _targetStream     = MediaFoundationCore.IStreamToByteStream(_targetBaseStream);

                attributes = new MFAttributes(2);
                attributes.SetUINT32(MediaFoundationAttributes.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
                attributes.SetGuid(MediaFoundationAttributes.MF_TRANSCODE_CONTAINERTYPE, containerType);

                _sinkWriter = new MFSinkWriter(_targetStream, attributes);

                _streamIndex = _sinkWriter.AddStream(targetMediaType);
                _sinkWriter.SetInputMediaType(_streamIndex, inputMediaType, null);

                _targetMediaType      = targetMediaType;
                _sourceBytesPerSecond = inputMediaType.AverageBytesPerSecond;

                //initialize the sinkwriter
                _sinkWriter.BeginWriting();
            }
            catch (Exception)
            {
                if (_sinkWriter != null)
                {
                    _sinkWriter.Dispose();
                    _sinkWriter = null;
                }
                if (_targetStream != null)
                {
                    _targetStream.Dispose();
                    _targetStream = null;
                }
                throw;
            }
            finally
            {
                if (attributes != null)
                {
                    attributes.Dispose();
                }
            }
        }
Ejemplo n.º 3
0
        protected void SetTargetStream(Stream stream, MFMediaType inputMediaType, MFMediaType targetMediaType, Guid containerType)
        {
            IMFAttributes attributes = null;
            try
            {
                _targetStream = MediaFoundationCore.IStreamToByteStream(new ComStream(stream));

                MFByteStreamCapsFlags flags = MFByteStreamCapsFlags.None;
                int result = _targetStream.GetCapabilities(ref flags);

                attributes = MediaFoundationCore.CreateEmptyAttributes(2);
                attributes.SetUINT32(MediaFoundationAttributes.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
                attributes.SetGUID(MediaFoundationAttributes.MF_TRANSCODE_CONTAINERTYPE, containerType);

                _sinkWriter = MediaFoundationCore.CreateSinkWriterFromMFByteStream(_targetStream, attributes);

                _streamIndex = _sinkWriter.AddStream(targetMediaType);
                _sinkWriter.SetInputMediaType(_streamIndex, inputMediaType, null);

                _inputMediaType = inputMediaType;
                _targetMediaType = targetMediaType;
                _sourceBytesPerSecond = inputMediaType.AverageBytesPerSecond;

                //initialize the sinkwriter
                _sinkWriter.BeginWriting();
            }
            catch (Exception)
            {
                if (_sinkWriter != null)
                {
                    _sinkWriter.Dispose();
                    _sinkWriter = null;
                }
                if (_targetStream != null)
                {
                    _targetStream.Close();
                    Marshal.ReleaseComObject(_targetStream);
                    _targetStream = null;
                }
                throw;
            }
            finally
            {
                if (attributes != null)
                    Marshal.ReleaseComObject(attributes);
            }
        }
Ejemplo n.º 4
0
        /// <summary>
        ///     Sets and initializes the targetstream for the encoding process.
        /// </summary>
        /// <param name="stream">Stream which should be used as the targetstream.</param>
        /// <param name="inputMediaType">Mediatype of the raw input data to encode.</param>
        /// <param name="targetMediaType">Mediatype of the encoded data.</param>
        /// <param name="containerType">Container type which should be used.</param>
        protected void SetTargetStream(Stream stream, MFMediaType inputMediaType, MFMediaType targetMediaType,
            Guid containerType)
        {
            MFAttributes attributes = null;
            try
            {
                _targetBaseStream = new ComStream(stream);
                _targetStream = MediaFoundationCore.IStreamToByteStream(_targetBaseStream);

                attributes = new MFAttributes(2);
                attributes.SetUINT32(MediaFoundationAttributes.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);
                attributes.SetGuid(MediaFoundationAttributes.MF_TRANSCODE_CONTAINERTYPE, containerType);

                _sinkWriter = new MFSinkWriter(_targetStream, attributes);

                _streamIndex = _sinkWriter.AddStream(targetMediaType);
                _sinkWriter.SetInputMediaType(_streamIndex, inputMediaType, null);

                _targetMediaType = targetMediaType;
                _sourceBytesPerSecond = inputMediaType.AverageBytesPerSecond;

                //initialize the sinkwriter
                _sinkWriter.BeginWriting();
            }
            catch (Exception)
            {
                if (_sinkWriter != null)
                {
                    _sinkWriter.Dispose();
                    _sinkWriter = null;
                }
                if (_targetStream != null)
                {
                    _targetStream.Dispose();
                    _targetStream = null;
                }
                throw;
            }
            finally
            {
                if (attributes != null)
                    attributes.Dispose();
            }
        }