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(WebP): ported lossless support (incomplete).

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This commit is contained in:
morkt
2016-09-04 04:50:49 +04:00
parent e2a0d76b65
commit bc62faa71a
3 changed files with 135 additions and 16 deletions
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25
ArcFormats/WebP/Decoder.cs
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@@ -74,6 +74,10 @@ namespace GameRes.Formats.Google
m_alpha_plane = new byte[info.Width * info.Height];
Format = PixelFormats.Bgra32;
}
else if (m_info.HasAlpha)
{
Format = PixelFormats.Bgra32;
}
else
{
Format = PixelFormats.Bgr32;
@@ -90,13 +94,22 @@ namespace GameRes.Formats.Google
public void Decode ()
{
if (m_info.IsLossless)
throw new NotImplementedException ("Lossless WebP not implemented");
m_input.BaseStream.Position = m_info.DataOffset;
GetHeaders();
EnterCritical();
InitFrame();
ParseFrame();
if (m_info.IsLossless)
{
m_io.opaque = m_output;
var ld = new LosslessDecoder();
ld.Init (m_input, m_info.DataSize, m_io);
if (!ld.DecodeImage())
throw new InvalidFormatException();
}
else
{
GetHeaders();
EnterCritical();
InitFrame();
ParseFrame();
}
}
int ReadInt24 ()