private void EncodeTransientFileToMp4OrAMR(TreeNode node)
{
ExternalAudioMedia extMedia = m_ExternalAudioMediaList[0];
AudioLib.WavFormatConverter formatConverter = new WavFormatConverter(true, DisableAcmCodecs);
string sourceFilePath = base.GetCurrentAudioFileUri().LocalPath;
string extension = EncodingFileFormat == AudioFileFormats.MP4 ? DataProviderFactory.AUDIO_MP4_EXTENSION :
EncodingFileFormat == AudioFileFormats.AMR ? DataProviderFactory.AUDIO_AMR_EXTENSION :
DataProviderFactory.AUDIO_3GPP_EXTENSION;
string destinationFilePath = Path.Combine(base.DestinationDirectory.LocalPath,
Path.GetFileNameWithoutExtension(sourceFilePath) + extension);
//reportProgress(m_ProgressPercentage, String.Format(UrakawaSDK_daisy_Lang.CreateMP3File, Path.GetFileName(destinationFilePath), GetSizeInfo(m_RootNode)));
PCMFormatInfo audioFormat = extMedia.Presentation.MediaDataManager.DefaultPCMFormat;
//AudioLibPCMFormat pcmFormat = audioFormat.Data;
AudioLibPCMFormat pcmFormat = new AudioLibPCMFormat();
pcmFormat.CopyFrom(audioFormat.Data);
pcmFormat.SampleRate = (ushort)base.EncodePublishedAudioFilesSampleRate;
pcmFormat.NumberOfChannels = (ushort)(base.EncodePublishedAudioFilesStereo ? 2 : 1);
AddSubCancellable(formatConverter);
bool result = false;
try
{
result = formatConverter.CompressWavToMP4And3GP(sourceFilePath, destinationFilePath, pcmFormat, BitRate_Encoding);
}
finally
{
RemoveSubCancellable(formatConverter);
}
if (RequestCancellation)
{
m_ExternalAudioMediaList.Clear();
return;
}
if (result)
{
m_EncodingFileCompressionRatio = (new FileInfo(sourceFilePath).Length) / (new FileInfo(destinationFilePath).Length);
foreach (ExternalAudioMedia ext in m_ExternalAudioMediaList)
{
if (ext != null)
{
ext.Src = ext.Src.Replace(DataProviderFactory.AUDIO_WAV_EXTENSION, extension);
}
}
File.Delete(sourceFilePath);
}
else
{
// append error messages
base.ErrorMessages = base.ErrorMessages + String.Format(UrakawaSDK_daisy_Lang.ErrorInEncoding, Path.GetFileName(sourceFilePath));
}
m_ExternalAudioMediaList.Clear();
}
/// <summary>
/// takes wav file / mp3 file as input and converts it to wav file with audio format info supplied as parameter
/// </summary>
/// <param name="SourceFilePath"></param>
/// <param name="destinationDirectory"></param>
/// <param name="destinationFormatInfo"></param>
/// <returns> full file path of converted file </returns>
private string ConvertToDefaultFormat(string SourceFilePath, string destinationDirectory, PCMFormatInfo destinationFormatInfo, bool skipACM)
{
if (!File.Exists(SourceFilePath))
{
throw new FileNotFoundException(SourceFilePath);
}
if (!Directory.Exists(destinationDirectory))
{
FileDataProvider.CreateDirectory(destinationDirectory);
}
AudioFileType sourceFileType = GetAudioFileType(SourceFilePath);
switch (sourceFileType)
{
case AudioFileType.WavUncompressed:
case AudioFileType.WavCompressed:
{
if (FirstDiscoveredPCMFormat == null)
{
Stream wavStream = null;
try
{
wavStream = File.Open(SourceFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
uint dataLength;
AudioLibPCMFormat pcmInfo = null;
pcmInfo = AudioLibPCMFormat.RiffHeaderParse(wavStream, out dataLength);
//FirstDiscoveredPCMFormat = new PCMFormatInfo(pcmInfo);
FirstDiscoveredPCMFormat = new AudioLibPCMFormat();
FirstDiscoveredPCMFormat.CopyFrom(pcmInfo);
}
finally
{
if (wavStream != null)
{
wavStream.Close();
}
}
}
WavFormatConverter formatConverter1 = new WavFormatConverter(true, skipACM);
AddSubCancellable(formatConverter1);
// Preserve existing WAV PCM format, the call below to ConvertSampleRate detects the equality of PCM formats and copies the audio file instead of resampling.
AudioLibPCMFormat pcmFormat = m_autoDetectPcmFormat ? FirstDiscoveredPCMFormat :
(destinationFormatInfo != null ? destinationFormatInfo.Data : new AudioLibPCMFormat());
string result = null;
try
{
AudioLibPCMFormat originalPcmFormat;
result = formatConverter1.ConvertSampleRate(SourceFilePath, destinationDirectory,
pcmFormat,
out originalPcmFormat);
if (originalPcmFormat != null && FirstDiscoveredPCMFormat != null)
{
DebugFix.Assert(FirstDiscoveredPCMFormat.Equals(originalPcmFormat));
}
}
finally
{
RemoveSubCancellable(formatConverter1);
}
return(result);
}
case AudioFileType.Mp4_AAC:
case AudioFileType.Mp3:
{
WavFormatConverter formatConverter2 = new WavFormatConverter(true, skipACM);
AddSubCancellable(formatConverter2);
string result = null;
try
{
AudioLibPCMFormat pcmFormat = m_autoDetectPcmFormat ? FirstDiscoveredPCMFormat : // can be null!
(destinationFormatInfo != null ? destinationFormatInfo.Data : new AudioLibPCMFormat());
AudioLibPCMFormat originalPcmFormat;
if (sourceFileType == AudioFileType.Mp3)
{
result = formatConverter2.UnCompressMp3File(SourceFilePath, destinationDirectory,
pcmFormat,
out originalPcmFormat);
}
else
{
DebugFix.Assert(sourceFileType == AudioFileType.Mp4_AAC);
result = formatConverter2.UnCompressMp4_AACFile(SourceFilePath, destinationDirectory,
pcmFormat,
out originalPcmFormat);
}
if (originalPcmFormat != null)
{
if (FirstDiscoveredPCMFormat == null)
{
//FirstDiscoveredPCMFormat = new PCMFormatInfo(originalPcmFormat);
FirstDiscoveredPCMFormat = new AudioLibPCMFormat();
FirstDiscoveredPCMFormat.CopyFrom(originalPcmFormat);
}
}
}
finally
{
RemoveSubCancellable(formatConverter2);
}
return(result);
}
default:
throw new Exception("Source file format not supported");
}
}
private void EncodeTransientFileResample(TreeNode node)
{
string sourceFilePath = base.GetCurrentAudioFileUri().LocalPath;
//string destinationFilePath = Path.Combine(base.DestinationDirectory.LocalPath, Path.GetFileNameWithoutExtension(sourceFilePath) + "_" + base.EncodePublishedAudioFilesSampleRate + DataProviderFactory.AUDIO_WAV_EXTENSION);
//reportProgress(m_ProgressPercentage, String.Format(UrakawaSDK_daisy_Lang.ConvertingAudio,sourceFilePath));
ExternalAudioMedia extMedia = m_ExternalAudioMediaList[0];
PCMFormatInfo audioFormat = extMedia.Presentation.MediaDataManager.DefaultPCMFormat;
//AudioLibPCMFormat pcmFormat = audioFormat.Data;
AudioLibPCMFormat pcmFormat = new AudioLibPCMFormat();
pcmFormat.CopyFrom(audioFormat.Data);
pcmFormat.SampleRate = (ushort)base.EncodePublishedAudioFilesSampleRate;
pcmFormat.NumberOfChannels = (ushort)(base.EncodePublishedAudioFilesStereo ? 2 : 1);
AudioLib.WavFormatConverter formatConverter = new WavFormatConverter(true, DisableAcmCodecs);
AddSubCancellable(formatConverter);
string destinationFilePath = null;
try
{
AudioLibPCMFormat originalPcmFormat;
destinationFilePath = formatConverter.ConvertSampleRate(sourceFilePath, base.DestinationDirectory.LocalPath, pcmFormat, out originalPcmFormat);
if (originalPcmFormat != null)
{
DebugFix.Assert(audioFormat.Data.Equals(originalPcmFormat));
}
}
finally
{
RemoveSubCancellable(formatConverter);
}
//string sourceName = Path.GetFileNameWithoutExtension(sourceFilePath);
//string destName = Path.GetFileNameWithoutExtension(destinationFilePath);
//foreach (ExternalAudioMedia ext in m_ExternalAudioMediaList)
//{
//if (ext != null)
//{
//ext.Src = ext.Src.Replace(sourceName, destName);
//}
//}
File.Delete(sourceFilePath);
File.Move(destinationFilePath, sourceFilePath);
try
{
File.SetAttributes(sourceFilePath, FileAttributes.Normal);
}
catch
{
}
m_ExternalAudioMediaList.Clear();
}