public override bool Parse(AviParser parser)
{
const short MaxLongsPerEntryCount = 16; // Random choice. The only value I've seen up till now is 4.
if (!base.Parse(parser))
{
return(false);
}
ushort longsPerEntry = (ushort)parser.GetShort(Attribute.LongsPerEntry);
if (longsPerEntry > MaxLongsPerEntryCount)
{
return(false);
}
parser.GetByte(Attribute.IndexSubType);
parser.GetByte(Attribute.IndexType);
parser.GetInt(Attribute.EntriesInUse);
parser.GetInt(Attribute.ChunkId);
parser.GetInt(Attribute.Reserved);
parser.GetInt(Attribute.Reserved);
parser.GetInt(Attribute.Reserved);
if (longsPerEntry > 0)
{
ulong bytesRemaining = parser.BytesRemaining;
parser.Parse(new IndexTableAttribute(longsPerEntry, bytesRemaining));
ulong numberOfEntriesInTable = bytesRemaining / (uint)(longsPerEntry * 4);
parser.CheckAttribute(Attribute.IndexTable, numberOfEntriesInTable * longsPerEntry * 4 == bytesRemaining, false);
}
return(Valid);
}
public override bool Parse(AviParser parser)
{
if (_frameFieldType == FrameFieldType.Short)
{
short leftEdge = parser.GetShort(LAttribute.LeftEdge);
short topEdge = parser.GetShort(LAttribute.TopEdge);
short rightEdge = parser.GetShort(LAttribute.RightEdge);
short bottomEdge = parser.GetShort(LAttribute.BottomEdge);
TypedValue = string.Format("({0}, {1}, {2}, {3})", leftEdge, topEdge, rightEdge, bottomEdge);
}
else
{
int leftEdge = parser.GetInt(LAttribute.LeftEdge);
int topEdge = parser.GetInt(LAttribute.TopEdge);
int rightEdge = parser.GetInt(LAttribute.RightEdge);
int bottomEdge = parser.GetInt(LAttribute.BottomEdge);
TypedValue = string.Format("({0}, {1}, {2}, {3})", leftEdge, topEdge, rightEdge, bottomEdge);
}
return(Valid);
}
public override bool Parse(AviParser parser)
{
if (!base.Parse(parser))
{
return(false);
}
switch (_aviStreamFormatType)
{
case AviStreamFormatType.Video:
parser.GetInt(Attribute.Size);
parser.GetInt(Attribute.Width);
parser.GetInt(Attribute.Height);
parser.GetShort(Attribute.Planes);
parser.GetShort(Attribute.BitCount);
Compression = parser.GetFourCC(Attribute.Compression);
parser.GetInt(Attribute.SizeImage);
parser.GetInt(Attribute.XPelsPerMeter);
parser.GetInt(Attribute.YPelsPerMeter);
parser.GetInt(Attribute.ClrUsed);
parser.GetInt(Attribute.ClrImportant);
ulong extraDataSize = parser.BytesRemaining;
if ((extraDataSize >= 17) && (extraDataSize < 256))
{
ExtraData = parser.GetDataPacket(parser.Position, (int)extraDataSize);
Attributes.Add(new FormattedAttribute <Attribute, ulong>(Attribute.ExtraDataSize, extraDataSize));
}
break;
case AviStreamFormatType.Audio:
FormatTagValue = parser.GetShort(Attribute.FormatTag, typeof(FormatTag));
parser.GetShort(Attribute.Channels);
parser.GetInt(Attribute.SamplesPerSec);
parser.GetInt(Attribute.AvgBytesPerSec);
parser.GetShort(Attribute.BlockAlign);
parser.GetShort(Attribute.BitsPerSample);
if (FormatTagValue != (short)FormatTag.WAVE_FORMAT_PCM &&
parser.BytesRemaining > 0)
{
parser.GetShort(Attribute.ExtraSize);
}
// TODO parse the other audio formats
switch (FormatTagValue)
{
case (short)FormatTag.WAVE_FORMAT_MPEGLAYER3:
if (parser.BytesRemaining > 0)
{
parser.GetShort(Attribute.Id);
parser.GetInt(Attribute.Flags); // TODO Parse the flags
parser.GetShort(Attribute.BlockSize);
parser.GetShort(Attribute.FramesPerBlock);
// Some file I found did not have this last field
if (parser.BytesRemaining > 0)
{
parser.GetShort(Attribute.CodecDelay);
}
}
break;
}
break;
default:
break;
}
return(Valid);
}
