From cd78d50a7353548619af92cdd2d427f54bc6f219 Mon Sep 17 00:00:00 2001 From: Adam Halim Date: Mon, 10 Jul 2023 11:15:33 +0200 Subject: [PATCH] Use compressionLevel in ZRLEEncoder This change makes the ZRLEEncoder respect a client's desired compressionLevel. The ZlibLevel option is marked deprecated and removed from the manpages. --- common/rfb/ZRLEEncoder.cxx | 17 +++++++++++++++-- common/rfb/ZRLEEncoder.h | 2 ++ unix/x0vncserver/x0vncserver.man | 6 ------ unix/xserver/hw/vnc/Xvnc.man | 6 ------ 4 files changed, 17 insertions(+), 14 deletions(-) diff --git a/common/rfb/ZRLEEncoder.cxx b/common/rfb/ZRLEEncoder.cxx index 4e25d49f..ad3aec1a 100644 --- a/common/rfb/ZRLEEncoder.cxx +++ b/common/rfb/ZRLEEncoder.cxx @@ -28,15 +28,23 @@ #include #include #include +#include using namespace rfb; -IntParameter zlibLevel("ZlibLevel","Zlib compression level",-1); +static LogWriter vlog("ZRLEEncoder"); + +IntParameter zlibLevel("ZlibLevel","[DEPRECATED] Zlib compression level",-1); ZRLEEncoder::ZRLEEncoder(SConnection* conn) : Encoder(conn, encodingZRLE, EncoderPlain, 127), - zos(0,zlibLevel), mos(129*1024) + zos(0, 2), mos(129*1024) { + if (zlibLevel != -1) { + vlog.info("Warning: The ZlibLevel option is deprecated and is " + "ignored by the server. The compression level can be set " + "by the client instead."); + } zos.setUnderlying(&mos); } @@ -50,6 +58,11 @@ bool ZRLEEncoder::isSupported() return conn->client.supportsEncoding(encodingZRLE); } +void ZRLEEncoder::setCompressLevel(int level) +{ + zos.setCompressionLevel(level); +} + void ZRLEEncoder::writeRect(const PixelBuffer* pb, const Palette& palette) { int x, y; diff --git a/common/rfb/ZRLEEncoder.h b/common/rfb/ZRLEEncoder.h index 4cfff75d..fa89f10f 100644 --- a/common/rfb/ZRLEEncoder.h +++ b/common/rfb/ZRLEEncoder.h @@ -32,6 +32,8 @@ namespace rfb { virtual bool isSupported(); + virtual void setCompressLevel(int level); + virtual void writeRect(const PixelBuffer* pb, const Palette& palette); virtual void writeSolidRect(int width, int height, const PixelFormat& pf, diff --git a/unix/x0vncserver/x0vncserver.man b/unix/x0vncserver/x0vncserver.man index c36ae34e..fda435bc 100644 --- a/unix/x0vncserver/x0vncserver.man +++ b/unix/x0vncserver/x0vncserver.man @@ -287,12 +287,6 @@ Use MIT-SHM extension if available. Using that extension accelerates reading the screen. Default is on. . .TP -.B \-ZlibLevel \fIlevel\fP -Zlib compression level for ZRLE encoding (it does not affect Tight encoding). -Acceptable values are between 0 and 9. Default is to use the standard -compression level provided by the \fBzlib\fP(3) compression library. -. -.TP .B \-ImprovedHextile Use improved compression algorithm for Hextile encoding which achieves better compression ratios by the cost of using slightly more CPU time. Default is diff --git a/unix/xserver/hw/vnc/Xvnc.man b/unix/xserver/hw/vnc/Xvnc.man index ea87deaf..4f26b07d 100644 --- a/unix/xserver/hw/vnc/Xvnc.man +++ b/unix/xserver/hw/vnc/Xvnc.man @@ -171,12 +171,6 @@ be either \fB0\fP (off), \fB1\fP (always) or \fB2\fP (auto). Default is \fB2\fP. . .TP -.B \-ZlibLevel \fIlevel\fP -Zlib compression level for ZRLE encoding (it does not affect Tight encoding). -Acceptable values are between 0 and 9. Default is to use the standard -compression level provided by the \fBzlib\fP(3) compression library. -. -.TP .B \-ImprovedHextile Use improved compression algorithm for Hextile encoding which achieves better compression ratios by the cost of using slightly more CPU time. Default is -- 2.39.5