public Time GetDurationOfManagedAudioMediaFlattened()
{
ManagedAudioMedia audioMedia = GetManagedAudioMedia();
if (audioMedia != null)
{
Time dur_ = audioMedia.Duration;
if (dur_.AsLocalUnits <= 0)
{
return(null);
}
return(dur_);
}
#if ENABLE_SEQ_MEDIA
SequenceMedia seq = GetManagedAudioSequenceMedia();
if (seq != null)
{
Time durSeq = seq.GetDurationOfManagedAudioMedia();
if (durSeq != null)
{
return(durSeq);
}
}
#endif //ENABLE_SEQ_MEDIA
Time dur = new Time();
for (int index = 0; index < mChildren.Count; index++)
{
TreeNode node = mChildren.Get(index);
Time childDur = node.GetDurationOfManagedAudioMediaFlattened();
if (childDur != null)
{
dur.Add(childDur);
}
}
if (dur.AsLocalUnits <= 0)
{
return(null);
}
return(dur);
}
public override bool PreVisit(TreeNode node)
{
if (m_RootNode == null)
{
m_RootNode = node;
}
if (m_currentAudioLevelNode == null)
{
m_currentAudioLevelNode = m_RootNode;
}
if (TreeNodeMustBeSkipped(node))
{
return(false);
}
if (RequestCancellation)
{
checkTransientWavFileAndClose(node);
return(false);
}
if (TreeNodeTriggersNewAudioFile(node))
{
m_currentAudioLevelNode = node;
checkTransientWavFileAndClose(node);
// REMOVED, because doesn't support nested TreeNode matches ! return false; // skips children, see postVisit
}
if (node.GetAlternateContentProperty() != null)
{
m_AlternateContentPropertiesList.Add(node.GetAlternateContentProperty());
}
if (!node.HasChannelsProperty)
{
return(true);
}
if (!node.Presentation.MediaDataManager.EnforceSinglePCMFormat)
{
Debug.Fail("! EnforceSinglePCMFormat ???");
throw new Exception("! EnforceSinglePCMFormat ???");
}
#if ENABLE_SEQ_MEDIA
Media media = node.GetManagedAudioMediaOrSequenceMedia();
if (media == null)
{
return(true);
}
#endif
ManagedAudioMedia manAudioMedia = node.GetManagedAudioMedia();
if (manAudioMedia == null)
{
return(true);
}
//if (!manAudioMedia.HasActualAudioMediaData)
//{
// return true;
//}
if (m_TransientWavFileStream == null)
{
mCurrentAudioFileNumber++;
Uri waveFileUri = GetCurrentAudioFileUri();
m_TransientWavFileStream = new FileStream(waveFileUri.LocalPath, FileMode.Create, FileAccess.Write, FileShare.None);
m_TransientWavFileStreamRiffOffset = node.Presentation.MediaDataManager.DefaultPCMFormat.Data.RiffHeaderWrite(m_TransientWavFileStream, 0);
}
long bytesBegin = m_TransientWavFileStream.Position - (long)m_TransientWavFileStreamRiffOffset;
#if ENABLE_SEQ_MEDIA
SequenceMedia seqAudioMedia = node.GetManagedAudioSequenceMedia();
#endif //ENABLE_SEQ_MEDIA
Stream audioPcmStream = null;
if (manAudioMedia != null)
{
audioPcmStream = manAudioMedia.AudioMediaData.OpenPcmInputStream();
}
#if ENABLE_SEQ_MEDIA
else if (seqAudioMedia != null)
{
Debug.Fail("SequenceMedia is normally removed at import time...have you tried re-importing the DAISY book ?");
audioPcmStream = seqAudioMedia.OpenPcmInputStreamOfManagedAudioMedia();
}
#endif //ENABLE_SEQ_MEDIA
else
{
Debug.Fail("This should never happen !!");
return(false);
}
if (RequestCancellation)
{
checkTransientWavFileAndClose(node);
return(false);
}
try
{
const uint BUFFER_SIZE = 1024 * 1024 * 3; // 3 MB MAX BUFFER
uint streamCount = StreamUtils.Copy(audioPcmStream, 0, m_TransientWavFileStream, BUFFER_SIZE);
//System.Windows.Forms.MessageBox.Show ( audioPcmStream.Length.ToString () + " : " + m_TransientWavFileStream.Length.ToString () + " : " + streamCount.ToString () );
}
catch
{
m_TransientWavFileStream.Close();
m_TransientWavFileStream = null;
m_TransientWavFileStreamRiffOffset = 0;
#if DEBUG
Debugger.Break();
#endif
}
finally
{
audioPcmStream.Close();
}
if (m_TransientWavFileStream == null)
{
Debug.Fail("Stream copy error !!");
return(false);
}
long bytesEnd = m_TransientWavFileStream.Position - (long)m_TransientWavFileStreamRiffOffset;
string src = node.Presentation.RootUri.MakeRelativeUri(GetCurrentAudioFileUri()).ToString();
if (manAudioMedia != null
#if ENABLE_SEQ_MEDIA
|| seqAudioMedia != null
#endif //ENABLE_SEQ_MEDIA
)
{
if (m_TotalTimeInLocalUnits == 0)
{
Time dur = node.Root.GetDurationOfManagedAudioMediaFlattened();
if (dur != null)
{
m_TotalTimeInLocalUnits = dur.AsLocalUnits;
}
}
m_TimeElapsedInLocalUnits += manAudioMedia != null ? manAudioMedia.Duration.AsLocalUnits :
#if ENABLE_SEQ_MEDIA
seqAudioMedia.GetDurationOfManagedAudioMedia().AsLocalUnits
#else
-1
#endif //ENABLE_SEQ_MEDIA
;
int percent = Convert.ToInt32((m_TimeElapsedInLocalUnits * 100) / m_TotalTimeInLocalUnits);
if (EncodePublishedAudioFiles)
{
reportProgress_Throttle(percent, String.Format(UrakawaSDK_daisy_Lang.CreateMP3File, Path.GetFileName(src).Replace(DataProviderFactory.AUDIO_WAV_EXTENSION, DataProviderFactory.AUDIO_MP3_EXTENSION), GetSizeInfo(node)));
}
else
{
reportProgress_Throttle(percent, String.Format(UrakawaSDK_daisy_Lang.CreatingAudioFile, Path.GetFileName(src), GetSizeInfo(node)));
}
//Console.WriteLine("progress percent " + m_ProgressPercentage);
}
ExternalAudioMedia extAudioMedia = node.Presentation.MediaFactory.Create <ExternalAudioMedia>();
extAudioMedia.Tag = m_currentAudioLevelNode;
ushort nChannels = (ushort)(EncodePublishedAudioFilesStereo ? 2 : 1);
if ((EncodePublishedAudioFiles
||
(ushort)EncodePublishedAudioFilesSampleRate != node.Presentation.MediaDataManager.DefaultPCMFormat.Data.SampleRate ||
nChannels != node.Presentation.MediaDataManager.DefaultPCMFormat.Data.NumberOfChannels
) &&
!m_ExternalAudioMediaList.Contains(extAudioMedia))
{
m_ExternalAudioMediaList.Add(extAudioMedia);
}
extAudioMedia.Language = node.Presentation.Language;
extAudioMedia.Src = src;
long timeBegin =
node.Presentation.MediaDataManager.DefaultPCMFormat.Data.ConvertBytesToTime(bytesBegin);
long timeEnd =
node.Presentation.MediaDataManager.DefaultPCMFormat.Data.ConvertBytesToTime(bytesEnd);
extAudioMedia.ClipBegin = new Time(timeBegin);
extAudioMedia.ClipEnd = new Time(timeEnd);
ChannelsProperty chProp = node.GetChannelsProperty();
if (chProp.GetMedia(DestinationChannel) != null)
{
chProp.SetMedia(DestinationChannel, null);
Debug.Fail("This should never happen !!");
}
chProp.SetMedia(DestinationChannel, extAudioMedia);
return(false);
}