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(PcmAudio): support OGG encoding (#35)

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This commit is contained in:
morkt 2016-10-12 14:48:09 +04:00
parent 4c3e9fdcbd
commit 83fea34587
1 changed files with 11 additions and 44 deletions
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55
ArcFormats/Circus/AudioPCM.cs
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@ -39,46 +39,6 @@ namespace GameRes.Formats.Circus
public override uint Signature { get { return 0x4d435058; } } // 'XPCM'
public override SoundInput TryOpen (Stream file)
{
return new PcmInput (file);
}
}
public class PcmInput : SoundInput
{
public override string SourceFormat { get { return "raw"; } }
public override int SourceBitrate
{
get { return (int)Format.AverageBytesPerSecond * 8; }
}
#region IO.Stream methods
public override long Position
{
get { return Source.Position; }
set { Source.Position = value; }
}
public override bool CanSeek { get { return Source.CanSeek; } }
public override long Seek (long offset, SeekOrigin origin)
{
return Source.Seek (offset, origin);
}
public override int Read (byte[] buffer, int offset, int count)
{
return Source.Read (buffer, offset, count);
}
public override int ReadByte ()
{
return Source.ReadByte();
}
#endregion
public PcmInput (Stream file) : base (null)
{
file.Position = 4;
using (var input = new ArcView.Reader (file))
@ -89,6 +49,12 @@ namespace GameRes.Formats.Circus
int mode = input.ReadInt32();
int extra = (mode >> 8) & 0xff;
mode &= 0xff;
if (5 == mode)
{
uint ogg_size = input.ReadUInt32();
var ogg = new StreamRegion (file, 0x10, ogg_size);
return new OggInput (ogg);
}
var format = new WaveFormat();
format.FormatTag = input.ReadUInt16();
format.Channels = input.ReadUInt16();
@ -96,20 +62,21 @@ namespace GameRes.Formats.Circus
format.AverageBytesPerSecond = input.ReadUInt32();
format.BlockAlign = input.ReadUInt16();
format.BitsPerSample = input.ReadUInt16();
this.Format = format;
this.PcmSize = src_size;
Stream pcm;
if (0 == mode)
{
this.Source = new StreamRegion (file, file.Position, src_size);
pcm = new StreamRegion (file, file.Position, src_size);
}
else if (1 == mode || 3 == mode)
{
var decoder = new PcmDecoder (input, src_size, extra, (XpcmCompression)mode);
this.Source = new MemoryStream (decoder.Unpack(), 0, src_size);
pcm = new MemoryStream (decoder.Unpack(), 0, src_size);
file.Dispose();
}
else
throw new NotSupportedException ("Not supported Circus PCM audio compression");
return new RawPcmInput (pcm, format);
}
}
}