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Parse FINF and (skip) SND2

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This commit is contained in:
Paul Chote
2010-08-10 20:10:45 +12:00
parent 0416b6b429
commit 90373529b0
1 changed files with 59 additions and 6 deletions
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65
OpenRA.FileFormats/Graphics/VqaReader.cs
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@@ -18,10 +18,17 @@ namespace OpenRA.FileFormats
{ {
public class VqaReader public class VqaReader
{ {
Stream stream;
ushort flags;
ushort numFrames;
ushort width;
ushort height;
UInt32[] frames;
public VqaReader( Stream stream ) public VqaReader( Stream stream )
{ {
this.stream = stream;
BinaryReader reader = new BinaryReader( stream ); BinaryReader reader = new BinaryReader( stream );
// Decode FORM chunk // Decode FORM chunk
if (new String(reader.ReadChars(4)) != "FORM") if (new String(reader.ReadChars(4)) != "FORM")
throw new InvalidDataException("Invalid vqa (invalid FORM section)"); throw new InvalidDataException("Invalid vqa (invalid FORM section)");
@@ -33,10 +40,10 @@ namespace OpenRA.FileFormats
var rStartPos = reader.ReadUInt32(); var rStartPos = reader.ReadUInt32();
var version = reader.ReadUInt16(); var version = reader.ReadUInt16();
var flags = reader.ReadUInt16(); flags = reader.ReadUInt16();
var numFrames = reader.ReadUInt16(); numFrames = reader.ReadUInt16();
var width = reader.ReadUInt16(); width = reader.ReadUInt16();
var height = reader.ReadUInt16(); height = reader.ReadUInt16();
var blockWidth = reader.ReadByte(); var blockWidth = reader.ReadByte();
var blockHeight = reader.ReadByte(); var blockHeight = reader.ReadByte();
@@ -64,9 +71,55 @@ namespace OpenRA.FileFormats
Console.WriteLine("\tBlocksize: {0}x{1}",blockWidth,blockHeight); Console.WriteLine("\tBlocksize: {0}x{1}",blockWidth,blockHeight);
Console.WriteLine("\tAudio: {0}hz, {1} channel(s), {2} bit",freq, channels, bits); Console.WriteLine("\tAudio: {0}hz, {1} channel(s), {2} bit",freq, channels, bits);
// The next section should be the first FINF chunk // Decode FINF chunk
if (new String(reader.ReadChars(4)) != "FINF") if (new String(reader.ReadChars(4)) != "FINF")
throw new InvalidDataException("Invalid vqa (invalid FINF section)"); throw new InvalidDataException("Invalid vqa (invalid FINF section)");
/*var offset = */reader.ReadUInt16();
/*var unknown4 = */reader.ReadUInt16();
// Frame offsets
frames = new UInt32[numFrames];
for (int i = 0; i < numFrames; i++)
{
frames[i] = reader.ReadUInt32();
if (frames[i] > 0x40000000) frames[i] -= 0x40000000;
frames[i] <<= 1;
}
while(true)
{
// Chunks are aligned on even bytes; may be padded with a single null
if (reader.PeekChar() == 0) reader.ReadByte();
var type = new String(reader.ReadChars(4));
Console.WriteLine("Parsing chunk {0}@{1}",type, reader.BaseStream.Position-4);
switch(type)
{
case "SND2":
DecodeSND2(reader);
break;
case "VQFR":
return;
default:
throw new InvalidDataException("Unknown section {0}".F(type));
}
}
} }
public void DecodeSND2(BinaryReader reader)
{
int chunkLength = (int)Swap(reader.ReadUInt32());
// Don't do anything with this data (yet)
reader.ReadBytes(chunkLength);
}
public UInt32 Swap(UInt32 orig)
{
return (UInt32)((orig & 0xff000000) >> 24) | ((orig & 0x00ff0000) >> 8) | ((orig & 0x0000ff00) << 8) | ((orig & 0x000000ff) << 24);
}
} }
} }