/// <summary>
/// Constructor to use when reading, can also be used for network streams (theoretically).
/// </summary>
/// <param name="stream"></param>
public ISMFile(Stream stream)
{
ISMElement ismElement = null;
try {
_xmlReader = XmlReader.Create(stream);
int trackID = 1; // mark each ism element with a unique track ID
// crude parser
while (_xmlReader.Read()) {
if (_xmlReader.NodeType != XmlNodeType.Element) {
continue;
}
if (_xmlReader.Name == "audio" || _xmlReader.Name == "video") {
// ismElement MUST be null at this point
if (ismElement != null)
throw new Exception("ISMFile: time scale param not found");
ismElement = new ISMElement(_baseFolder);
if (_xmlReader.Name == "audio") {
ismElement.FragmentType = FragmentType.Audio;
}
else if (_xmlReader.Name == "video") {
ismElement.FragmentType = FragmentType.Video;
}
ismElement.Source = _xmlReader.GetAttribute("src");
ismElement.Bitrate = long.Parse(_xmlReader.GetAttribute("systemBitrate"));
ismElement.TrackID = trackID++;
}
else if (_xmlReader.Name == "param")
{
string paramName = _xmlReader.GetAttribute("name");
string attributeValue = _xmlReader.GetAttribute("value");
if (paramName == "trackID")
{
ismElement.ISMVTrackID = int.Parse(attributeValue);
}
else if (paramName == "timeScale")
{
ismElement.TimeScale = uint.Parse(attributeValue);
_ismElements.Add(ismElement);
ismElement = null;
}
}
}
} catch {
throw;
} finally {
if (_xmlReader != null) {
_xmlReader.Close();
}
}
}
public string GetSource(FragmentType mediaType, long bitrate)
{
ISMElement ismElement = GetISMElement(mediaType, bitrate);
if (ismElement != null)
{
return(ismElement.Source);
}
return(null);
}
/// <summary>
/// Constructor to use when reading an ismc file.
/// </summary>
/// <param name="inDir"></param>
/// <param name="inFileName"></param>
public ISMCFile(string inDir, string inFileName, List <ISMElement> ismElements) :
this(new FileStream(Path.Combine(new string[] { inDir, inFileName + ".ismc" }), FileMode.Open, FileAccess.Read, FileShare.Read))
{
ISMElement qElement = null;
List <uint> fragDurations = null;
strDir = inDir;
strFileName = inFileName;
//Console.WriteLine("OPENING: " + inDir + inFileName);
foreach (StreamIndex streamIndex in indexs)
{
fragDurations = new List <uint>(streamIndex.cs.Count);
streamIndex.cs.ForEach((c) => fragDurations.Add(uint.Parse(c.d)));
if (streamIndex.Type == "video")
{
if (streamIndex.QualityLevels.Count != ismElements.Count(el => el.FragmentType == MP4.FragmentType.Video))
{
throw new Exception("ISMCFile: count of quality levels for video does not match count of video elements in ISM file");
}
foreach (QualityLevel qlevel in streamIndex.QualityLevels)
{
qElement = ismElements.First(elmnt => (elmnt.TrackID == int.Parse(qlevel.TrackID) + 1) && (elmnt.FragmentType == MP4.FragmentType.Video));
qElement.Codec = new Codec(CodecTypes.Video);
qElement.Codec.PrivateCodecData = qlevel.CodecPrivateData;
qElement.FourCC = qlevel.FourCC;
qElement.Height = int.Parse(qlevel.Height);
qElement.Width = int.Parse(qlevel.Width);
qElement.FragmentDurations = fragDurations;
}
}
else if (streamIndex.Type == "audio")
{
if (streamIndex.QualityLevels.Count != ismElements.Count(el => el.FragmentType == MP4.FragmentType.Audio))
{
throw new Exception("ISMCFile: count of quality levels for audio does not match count of audio elements in ISM file");
}
// we assume there is only ONE audio quality level
qElement = ismElements.First(elmnt => (elmnt.FragmentType == MP4.FragmentType.Audio));
qElement.Codec = new Codec(CodecTypes.Audio);
QualityLevel qlevel = streamIndex.QualityLevels[0];
qElement.Codec.PrivateCodecData = "038080220000000480801640150020000001F4000001F4000580800511900000000680800102"; // qlevel.CodecPrivateData;
qElement.FourCC = qlevel.FourCC;
qElement.ChannelCount = int.Parse(qlevel.Channels);
qElement.SampleRate = int.Parse(qlevel.SamplingRate);
qElement.SampleSize = int.Parse(qlevel.BitsPerSample);
qElement.FragmentDurations = fragDurations;
}
}
}
public ISMVTrackFormat(string inDir, string inFileName, ISMElement element)
: this(inDir, inFileName)
{
_ismElement = element;
if (element.FragmentType == FragmentType.Video)
{
_handlerType = "vide";
FrameSize.Height = element.Height;
FrameSize.Width = element.Width;
}
else if (element.FragmentType == FragmentType.Audio)
{
_handlerType = "soun";
_channelCount = _ismElement.ChannelCount;
_samplesize = _ismElement.SampleSize;
_sampleRate = _ismElement.SampleRate;
}
DurationIn100NanoSecs = (ulong)_ismElement.FragmentDurations.Sum((uint u) => { return (long)u; });
}
public ISMVTrackFormat(string inDir, string inFileName, ISMElement element)
: this(inDir, inFileName)
{
_ismElement = element;
if (element.FragmentType == FragmentType.Video)
{
_handlerType = "vide";
FrameSize.Height = element.Height;
FrameSize.Width = element.Width;
}
else if (element.FragmentType == FragmentType.Audio)
{
_handlerType = "soun";
_channelCount = _ismElement.ChannelCount;
_samplesize = _ismElement.SampleSize;
_sampleRate = _ismElement.SampleRate;
}
DurationIn100NanoSecs = (ulong)_ismElement.FragmentDurations.Sum((uint u) => { return((long)u); });
}
/// <summary>
/// Constructor to use when reading, can also be used for network streams (theoretically).
/// </summary>
/// <param name="stream"></param>
public ISMFile(Stream stream)
{
ISMElement ismElement = null;
try {
_xmlReader = XmlReader.Create(stream);
int trackID = 1; // mark each ism element with a unique track ID
// crude parser
while (_xmlReader.Read())
{
if (_xmlReader.NodeType != XmlNodeType.Element)
{
continue;
}
if (_xmlReader.Name == "audio" || _xmlReader.Name == "video")
{
// ismElement MUST be null at this point
if (ismElement != null)
{
throw new Exception("ISMFile: time scale param not found");
}
ismElement = new ISMElement(_baseFolder);
if (_xmlReader.Name == "audio")
{
ismElement.FragmentType = FragmentType.Audio;
}
else if (_xmlReader.Name == "video")
{
ismElement.FragmentType = FragmentType.Video;
}
ismElement.Source = _xmlReader.GetAttribute("src");
ismElement.Bitrate = long.Parse(_xmlReader.GetAttribute("systemBitrate"));
ismElement.TrackID = trackID++;
}
else if (_xmlReader.Name == "param")
{
string paramName = _xmlReader.GetAttribute("name");
string attributeValue = _xmlReader.GetAttribute("value");
if (paramName == "trackID")
{
ismElement.ISMVTrackID = int.Parse(attributeValue);
}
else if (paramName == "timeScale")
{
ismElement.TimeScale = uint.Parse(attributeValue);
_ismElements.Add(ismElement);
ismElement = null;
}
}
}
} catch {
throw;
} finally {
if (_xmlReader != null)
{
_xmlReader.Close();
}
}
}
