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Avoid having our own custom stuff and instead use the modern, standard
types, for familiarity.
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Avoid preprocessor magic and instead rely on templating to generate
optimized functions for performance critical code.
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No one should every try to write to this buffer. Enforce that by
throwing an exception if any one tries to get a writeable pointer
to the data.
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If an area recently changed then we can guess that it will most likely
change again very soon. In such a case it is meaningless to send a
lossless refresh as it will directly be overwritten. Keep track of
such areas and avoid refreshing them until we no longer see any
changes to them.
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We don't want to waste bandwidth on the lossless refresh if we might
need that bandwidth for a normal update. Try to estimate how much
data we can safely send without interfering.
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Resend pixel perfect copies of areas that were previously sent
using a lossy encoder. This is done when there is no normal update
to send, and no congestion.
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Clang doesn't like when struct and class are used to refer
to the same thing interchangeably.
Fixes all instances of:
In file included from /home/shade/dev/tigervnc/common/rfb/CConnection.cxx:29:
In file included from /home/shade/dev/tigervnc/common/rfb/CConnection.h:28:
/home/shade/dev/tigervnc/common/rfb/DecodeManager.h:35:3: error: class 'Exception' was previously declared as a struct [-Werror,-Wmismatched-tags]
class Exception;
^
/home/shade/dev/tigervnc/common/rdr/Exception.h:32:10: note: previous use is here
struct Exception {
^
/home/shade/dev/tigervnc/common/rfb/DecodeManager.h:35:3: note: did you mean struct here?
class Exception;
^~~~~
struct
/home/shade/dev/tigervnc/common/rfb/DecodeManager.h:43:3: error: class 'Rect' was previously declared as a struct [-Werror,-Wmismatched-tags]
class Rect;
^
/home/shade/dev/tigervnc/common/rfb/Rect.h:68:10: note: previous use is here
struct Rect {
^
/home/shade/dev/tigervnc/common/rfb/DecodeManager.h:43:3: note: did you mean struct here?
class Rect;
^~~~~
struct
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The previous FIXME was incorrect. The old code did in fact continue
looking over the entire area. This commit restores that old behaviour.
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It knows more details so it can track things better.
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This allows us to apply a lot more server logic
independently of which encoder is in use.
Most of this class are things moved over from the
Tight encoder.
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