Ejemplo n.º 1
0
        /*
         * Draws the waveform(s) on the Graphics object
         */
        private void DrawWaveform(Graphics g)
        {
            if (m_CurrentWaveformGroup == null)
            {
                return;
            }
            try
            {
                // Get number of channels
                int nChannelsCount = m_CurrentWaveformGroup.ChannelCount;
                if (nChannelsCount == 0)
                {
                    return;
                }

                // How many samples do we have in a channel
                int nSamplesPerChannel = m_CurrentWaveformGroup.GetNumberOfSamplesPerChannel();
                if (nSamplesPerChannel == 0)
                {
                    return;
                }

                int[]      nAllData;
                int        nSampleIndex, nChannelIndex;
                int        iMaxVal, iMinVal;
                double     dExtent   = 0;
                double     dVertStep = 0;
                RectangleF DrawTextRect;

                int nViewRectHeight = m_nPageHeight - m_nFrameWidth;
                int nViewRectWidth  = m_nPageWidth;

                DicomCodeSequenceItem ChannelSource;

                iMaxVal = -32768;
                iMinVal = 32767;

                // Find the minimum and maximum value for all the channels
                for (nChannelIndex = 0; nChannelIndex < nChannelsCount; nChannelIndex++)
                {
                    nAllData = m_CurrentWaveformGroup.GetChannel(nChannelIndex).GetChannelSamples();

                    for (nSampleIndex = 0; nSampleIndex < nSamplesPerChannel; nSampleIndex++)
                    {
                        if (nAllData[nSampleIndex] > iMaxVal)
                        {
                            iMaxVal = nAllData[nSampleIndex];
                        }
                        else if (nAllData[nSampleIndex] < iMinVal)
                        {
                            iMinVal = nAllData[nSampleIndex];
                        }
                    }

                    dVertStep = nViewRectHeight / nChannelsCount;
                    dExtent   = ((iMaxVal - iMinVal) * 1.2) / dVertStep;
                }

                int    nIndex = 0;
                string strText;
                DicomWaveformAnnotation ann;
                long lStartPoint;

                // Loop through the channels one by one
                for (nChannelIndex = 0; nChannelIndex < nChannelsCount; nChannelIndex++)
                {
                    strText = "";
                    nIndex  = nChannelsCount - nChannelIndex - 1;

                    //Get the data for this channel
                    nAllData    = m_CurrentWaveformGroup.GetChannel(nIndex).GetChannelSamples();
                    lStartPoint = ((nViewRectHeight + (int)((double)((nChannelIndex) * -1 * (int)dVertStep) - (nAllData[0] - iMinVal) / dExtent))) + m_nFrameWidth / 2;


                    // Get the channel source
                    ChannelSource = m_CurrentWaveformGroup.GetChannel(nIndex).GetChannelSource();

                    DrawTextRect = new RectangleF(5, lStartPoint, m_nFrameWidth - 5, (float)dVertStep);

                    if ((ChannelSource != null) && (ChannelSource.CodeMeaning != null))
                    {
                        // Display the channel source
                        strText = ChannelSource.CodeMeaning;
                        if (m_CurrentWaveformGroup.GetChannel(nIndex).GetAnnotationCount() > 0)
                        {
                            // Display the channel annotation
                            ann = m_CurrentWaveformGroup.GetChannel(nIndex).GetAnnotation(0);
                            if (ann != null)
                            {
                                if ((ann.UnformattedTextValue != null) && (ann.UnformattedTextValue != ""))
                                {
                                    strText += " (";
                                    strText += ann.UnformattedTextValue;
                                    strText += ")";
                                }
                                else
                                {
                                    if ((ann.CodedName != null) && ((ann.CodedName.CodeMeaning != null) && ann.CodedName.CodeMeaning != ""))
                                    {
                                        strText += " (";
                                        strText += ann.CodedName.CodeMeaning;
                                        strText += ")";
                                    }
                                }
                            }
                        }

                        g.DrawString(strText, new Font(FontFamily.GenericSansSerif, 10), Brushes.Red, DrawTextRect);
                    }

                    int    nDiff;
                    double dRatio;
                    int    nOffset;

                    // Draw the points/lines for this channel
                    Point ptPreviousPoint, ptCurrentPoint;
                    ptPreviousPoint = new Point(m_nFrameWidth, (int)lStartPoint);
                    for (nSampleIndex = 1; nSampleIndex < nSamplesPerChannel; nSampleIndex++)
                    {
                        nDiff   = nAllData[nSampleIndex] - iMinVal;
                        dRatio  = (double)nDiff / dExtent;
                        nOffset = m_nFrameWidth / 2;

                        ptCurrentPoint = new Point(
                            (nSampleIndex * nViewRectWidth / nSamplesPerChannel) + m_nFrameWidth,
                            ((nViewRectHeight + (int)(((double)(nChannelIndex) * -1 * dVertStep) - dRatio))) + nOffset);

                        g.DrawLine(new Pen(Color.FromArgb(0, 255, 0)), ptPreviousPoint, ptCurrentPoint);

                        ptPreviousPoint = ptCurrentPoint;
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
Ejemplo n.º 2
0
        /*
         * Adds a waveform group for a Wav file to a Dataset
         */
        private bool InsertWaveStream(ref DicomDataSet InDS, string strInputWaveFileName)
        {
            DicomWaveformGroup AudioWaveformGroup = new DicomWaveformGroup();
            int nNumberOfChannels = 0;

            // Load an audio file into the waveform group
            try
            {
                AudioWaveformGroup.LoadAudio(strInputWaveFileName);
            }
            catch (Exception ex)
            {
                MessageBox.Show("Couldn't insert the wave stream into the dataset.\r\n\r\n" + ex.ToString());
                return(false);
            }

            // Verify that hte frequency is 8K
            int nSamplingFrequency = (int)AudioWaveformGroup.GetSamplingFrequency();

            if (nSamplingFrequency != 8000)
            {
                MessageBox.Show("The samples per second (sampling rate) for the wave file should be 8KHz.");
                return(false);
            }

            // Set the channel source
            nNumberOfChannels = AudioWaveformGroup.ChannelCount;
            if (nNumberOfChannels > 0)
            {
                DicomWaveformChannel  channel = null;
                DicomCodeSequenceItem DicomSourceSequenceItem = new DicomCodeSequenceItem();

                DicomSourceSequenceItem.CodeMeaning            = "Dictation";
                DicomSourceSequenceItem.CodeValue              = "110011";
                DicomSourceSequenceItem.CodingSchemeDesignator = "DCM";
                DicomSourceSequenceItem.CodingSchemeVersion    = "01";

                for (int nIndex = 0; nIndex < nNumberOfChannels; nIndex++)
                {
                    channel = AudioWaveformGroup.GetChannel(nIndex);
                    if (channel != null)
                    {
                        try
                        {
                            channel.SetChannelSource(DicomSourceSequenceItem);
                        }
                        catch (Exception ex)
                        {
                            MessageBox.Show("Couldn't set the channel source\r\n\r\n" + ex.ToString());
                            return(false);
                        }
                    }
                }
            }

            // Insert the waveform group into the dataset
            try
            {
                InDS.AddWaveformGroup(AudioWaveformGroup, 0);
            }
            catch (Exception ex)
            {
                MessageBox.Show("Couldn't insert the wave stream into the dataset.\r\n\r\n" + ex.ToString());
                return(false);
            }
            return(true);
        }
Ejemplo n.º 3
0
        /*
         * Creates a new WaveformAttributesDialog and initializes the form elements with the information
         *   from the DicomWaveformGroup passed
         */
        public WaveformAttributesDialog(ref DicomWaveformGroup pWaveformGroup)
        {
            InitializeComponent();

            m_pWaveformGroup = pWaveformGroup;

            // Add columns
            lvChannelAttributes.Columns.Add("Channel Sensitivity");
            lvChannelAttributes.Columns.Add("Channel Sensitivity Units");
            lvChannelAttributes.Columns.Add("Channel Source");
            lvChannelAttributes.Columns.Add("Filter Low Freq.");
            lvChannelAttributes.Columns.Add("Filter High Freq.");
            lvChannelAttributes.Columns.Add("Waveform Annotation");

            lvChannelAttributes.Columns[0].Width = 116;
            lvChannelAttributes.Columns[1].Width = 138;
            lvChannelAttributes.Columns[2].Width = 100;
            lvChannelAttributes.Columns[3].Width = 100;
            lvChannelAttributes.Columns[4].Width = 100;
            lvChannelAttributes.Columns[5].Width = 150;

            if ((m_pWaveformGroup != null) && (m_pWaveformGroup.ChannelCount > 0))
            {
                DicomWaveformChannel    channel = null;
                DicomCodeSequenceItem   ChannelSource;
                DicomWaveformAnnotation annotation = null;

                // Populate the text boxes with the general waveform information
                txtNumberOfChannels.Text        = string.Format("{0:g}", m_pWaveformGroup.ChannelCount);
                txtSamplingFrequency.Text       = string.Format("{0:g}", m_pWaveformGroup.GetSamplingFrequency());
                txtNumberOfWaveformSamples.Text = string.Format("{0:g}", m_pWaveformGroup.GetNumberOfSamplesPerChannel());

                switch (m_pWaveformGroup.GetSampleInterpretation())
                {
                case DicomWaveformSampleInterpretationType.Signed16BitLinear:
                    txtSampleInterpretation.Text = "signed 16 bit linear";
                    break;

                case  DicomWaveformSampleInterpretationType.Unsigned16BitLinear:
                    txtSampleInterpretation.Text = "unsigned 16 bit linear";
                    break;

                case DicomWaveformSampleInterpretationType.Signed8BitLinear:
                    txtSampleInterpretation.Text = "signed 8 bit linear";
                    break;

                case DicomWaveformSampleInterpretationType.Unsigned8BitLinear:
                    txtSampleInterpretation.Text = "unsigned 8 bit linear";
                    break;

                case DicomWaveformSampleInterpretationType.Mulaw8Bit:
                    txtSampleInterpretation.Text = "8 bit mu-law";
                    break;

                case DicomWaveformSampleInterpretationType.Alaw8Bit:
                    txtSampleInterpretation.Text = "8 bit A-law";
                    break;
                }

                switch (m_pWaveformGroup.GetSampleInterpretation())
                {
                case DicomWaveformSampleInterpretationType.Signed16BitLinear:
                case DicomWaveformSampleInterpretationType.Unsigned16BitLinear:
                    txtWaveformBitsAllocated.Text = "16";
                    break;

                case DicomWaveformSampleInterpretationType.Signed8BitLinear:
                case DicomWaveformSampleInterpretationType.Unsigned8BitLinear:
                case DicomWaveformSampleInterpretationType.Mulaw8Bit:
                case DicomWaveformSampleInterpretationType.Alaw8Bit:
                    txtWaveformBitsAllocated.Text = "8";
                    break;
                }

                txtWaveformPaddingValue.Text = string.Format("{0:g}", m_pWaveformGroup.GetWaveformPaddingValue());

                // Populate the list view with the specific information for each channel
                string[] strItemText;
                for (int nIndex = 0; nIndex < m_pWaveformGroup.ChannelCount; nIndex++)
                {
                    channel = m_pWaveformGroup.GetChannel(nIndex);
                    if (channel != null)
                    {
                        DicomChannelSensitivity channelSensitivity = channel.GetChannelSensitivity();

                        if ((channelSensitivity != null) && ((channelSensitivity.SensitivityUnits.CodeMeaning != null) && (channelSensitivity.SensitivityUnits.CodeMeaning != "")))
                        {
                            ChannelSource = channel.GetChannelSource();

                            strItemText = new string[6] {
                                string.Format("{0:g}", channelSensitivity.Sensitivity),
                                channelSensitivity.SensitivityUnits.CodeMeaning,
                                ChannelSource.CodeMeaning,
                                string.Format("{0:g}", channel.GetFilterLowFrequency()),
                                string.Format("{0:g}", channel.GetFilterHighFrequency()),
                                ""
                            };

                            if (channel.GetAnnotationCount() > 0)
                            {
                                annotation = channel.GetAnnotation(0);
                                if (annotation != null)
                                {
                                    if ((annotation.UnformattedTextValue != null) && (annotation.UnformattedTextValue != ""))
                                    {
                                        strItemText[5] = annotation.UnformattedTextValue;
                                    }
                                    else
                                    {
                                        if ((annotation.CodedName != null) && ((annotation.CodedName.CodeMeaning != null) && (annotation.CodedName != null)))
                                        {
                                            strItemText[5] = annotation.CodedName.CodeMeaning;
                                        }
                                    }
                                }
                            }

                            lvChannelAttributes.Items.Add(new ListViewItem(strItemText));
                        }
                    }
                }
            }
        }