Allow perceptually lossless refresh
Loosen the definition of "lossless" a bit so that we can use high
quality JPEG to refresh damaged parts of the screen. Although this
isn't bit perfect, it is close enough that most users will not be
able to tell the difference.
Level 9 is used rather than level 8 because some monitors have
exaggerated contrast that allows the artefacts from level 8 to be
noticeable.
diff --git a/common/rfb/Encoder.h b/common/rfb/Encoder.h
index e135ec0..d5a0288 100644
--- a/common/rfb/Encoder.h
+++ b/common/rfb/Encoder.h
@@ -42,7 +42,8 @@
class Encoder {
public:
Encoder(SConnection* conn, int encoding,
- enum EncoderFlags flags, unsigned int maxPaletteSize=-1);
+ enum EncoderFlags flags, unsigned int maxPaletteSize=-1,
+ int losslessQuality=-1);
virtual ~Encoder();
// isSupported() should return a boolean indicating if this encoder
@@ -95,6 +96,10 @@
// Maximum size of the palette per rect
const unsigned int maxPaletteSize;
+ // Minimum level where the quality loss will not be noticed by
+ // most users (only relevant with EncoderLossy flag)
+ const int losslessQuality;
+
protected:
SConnection* conn;
};