|
public static HexStringAttribute ( string>.IDictionary |
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| attributes | string>.IDictionary | |
| key | string | |
| return | byte[] | |
public AudioTrackInfo(XmlNode element, IDictionary <string, string> streamAttributes, uint index, StreamInfo stream) : base(element, index, stream)
{
WaveFormatEx waveFormatEx;
if (base.Attributes.ContainsKey("WaveFormatEx"))
{
byte[] data = Parse.HexStringAttribute(base.Attributes, "WaveFormatEx");
waveFormatEx = new WaveFormatEx(data);
}
else
{
ushort wFormatTag = Parse.UInt16Attribute(base.Attributes, "AudioTag");
ushort nChannels = Parse.UInt16Attribute(base.Attributes, "Channels");
uint nSamplesPerSec = Parse.UInt32Attribute(base.Attributes, "SamplingRate");
uint num = Parse.UInt32Attribute(base.Attributes, "Bitrate");
ushort nBlockAlign = Parse.UInt16Attribute(base.Attributes, "PacketSize");
ushort wBitsPerSample = Parse.UInt16Attribute(base.Attributes, "BitsPerSample");
byte[] decoderSpecificData = Parse.HexStringAttribute(base.Attributes, "CodecPrivateData");
waveFormatEx = new WaveFormatEx(wFormatTag, nChannels, nSamplesPerSec, num / 8u, nBlockAlign, wBitsPerSample, decoderSpecificData);
}
byte[] audioInfoBytes = MkvUtils.GetAudioInfoBytes(
waveFormatEx.nSamplesPerSec, (ulong)waveFormatEx.nChannels, (ulong)waveFormatEx.wBitsPerSample);
switch (waveFormatEx.wFormatTag)
{
case 353:
case 354: {
base.TrackEntry = new TrackEntry(TrackType.Audio, audioInfoBytes, CodecID.A_MS, waveFormatEx.GetBytes());
break;
}
case 255:
case 5633: {
base.TrackEntry = new TrackEntry(TrackType.Audio, audioInfoBytes, CodecID.A_AAC, GetAudioSpecificConfigBytes(
waveFormatEx.nSamplesPerSec, (byte)waveFormatEx.nChannels));
break;
}
case 1: {
throw new Exception("Unsupported audio format: 'LPCM'!");
}
case 65534: {
throw new Exception("Unsupported audio format: 'Vendor-extensible format'!");
}
default: {
throw new Exception("Unsupported AudioTag: '" + waveFormatEx.wFormatTag + "'");
}
}
if (base.Attributes.ContainsKey("Name"))
{
base.TrackEntry.Name = Parse.StringAttribute(streamAttributes, "Name");
}
base.TrackEntry.Language = LanguageID.Hungarian; // TODO: Make this configurable.
base.Description = string.Format("{0} {1} channels {2} Hz @ {3} kbps", new object[] {
GetCodecNameForAudioTag(waveFormatEx.wFormatTag), waveFormatEx.nChannels, waveFormatEx.nSamplesPerSec,
base.Bitrate / 1000u
});
}
public VideoTrackInfo(XmlNode element, IDictionary <string, string> streamAttributes, uint index, StreamInfo stream)
: base(element, index, stream)
{
uint pixelWidth = base.Attributes.ContainsKey("MaxWidth") ? Parse.UInt32Attribute(base.Attributes, "MaxWidth") :
base.Attributes.ContainsKey("Width") ? Parse.UInt32Attribute(base.Attributes, "Width") :
streamAttributes.ContainsKey("MaxWidth") ? Parse.UInt32Attribute(streamAttributes, "MaxWidth") : 0u;
if (pixelWidth == 0u)
{
throw new Exception("Missing video width attribute!");
}
uint pixelHeight = base.Attributes.ContainsKey("MaxHeight") ? Parse.UInt32Attribute(base.Attributes, "MaxHeight") :
base.Attributes.ContainsKey("Height") ? Parse.UInt32Attribute(base.Attributes, "Height") :
streamAttributes.ContainsKey("MaxHeight") ? Parse.UInt32Attribute(streamAttributes, "MaxHeight") : 0u;
if (pixelHeight == 0u)
{
throw new Exception("Missing video height attribute!");
}
uint displayWidth = streamAttributes.ContainsKey("DisplayWidth") ?
Parse.UInt32Attribute(streamAttributes, "DisplayWidth") : 0u;
if (displayWidth == 0u)
{
displayWidth = pixelWidth;
}
uint displayHeight = streamAttributes.ContainsKey("DisplayHeight") ?
Parse.UInt32Attribute(streamAttributes, "DisplayHeight") : 0u;
if (displayHeight == 0u)
{
displayHeight = pixelHeight;
}
byte[] videoInfoBytes = MkvUtils.GetVideoInfoBytes(
(ulong)pixelWidth, (ulong)pixelHeight, (ulong)displayWidth, (ulong)displayHeight);
byte[] codecPrivateData = base.Attributes.ContainsKey("CodecPrivateData") ?
Parse.HexStringAttribute(base.Attributes, "CodecPrivateData") : null;
if (codecPrivateData == null)
{
throw new Exception("Missing CodecPrivateData attribute!");
}
string fourcc = base.Attributes.ContainsKey("FourCC") ? Parse.StringAttribute(base.Attributes, "FourCC") :
streamAttributes.ContainsKey("FourCC") ? Parse.StringAttribute(streamAttributes, "FourCC") : null;
switch (fourcc)
{
case "WVC1": {
base.TrackEntry = new TrackEntry(
TrackType.Video, videoInfoBytes, CodecID.V_MS, VideoTrackInfo.GetVfWCodecPrivate(
pixelWidth, pixelHeight, fourcc, codecPrivateData));
break;
}
case "H264": {
ushort nalUnitLengthField = 4;
if (base.Attributes.ContainsKey("NALUnitLengthField"))
{
nalUnitLengthField = Parse.UInt16Attribute(base.Attributes, "NALUnitLengthField");
}
base.TrackEntry = new TrackEntry(
TrackType.Video, videoInfoBytes, CodecID.V_AVC,
GetAVCCodecPrivate(codecPrivateData, nalUnitLengthField));
break;
}
case null: {
throw new Exception("Missing FourCC attribute!");
}
default: {
throw new Exception("Unsupported video FourCC: '" + fourcc + "'");
}
}
if (base.Attributes.ContainsKey("Name"))
{
base.TrackEntry.Name = Parse.StringAttribute(streamAttributes, "Name");
}
base.TrackEntry.Language = LanguageID.Hungarian; // TODO: Make this configurable.
base.Description = string.Format("{0} {1}x{2} ({3}x{4}) @ {5} kbps", new object[] {
fourcc, pixelWidth, pixelHeight, displayWidth, displayHeight, base.Bitrate / 1000u
});
}
