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| author | DRC <[email protected]> | 2017-11-06 17:25:41 -0600 |
|---|---|---|
| committer | DRC <[email protected]> | 2018-01-22 16:49:11 -0600 |
| commit | d7b14624cbb9ed7b9df3532658e1edba8da606a6 (patch) | |
| tree | 8f741c88d3d1b49d091f36238e57c84b574421b2 /rfb | |
| parent | 6814e946e0afed20a6ef0f45a9bcbfeda2e77706 (diff) | |
| download | libtdevnc-d7b14624cbb9ed7b9df3532658e1edba8da606a6.tar.gz libtdevnc-d7b14624cbb9ed7b9df3532658e1edba8da606a6.zip | |
Include Tight decoding optimizations from TurboVNC
- As with the encoder, the decoder now uses the TurboJPEG wrapper, which
allows it to decode JPEG images directly into the framebuffer. This
eliminates a buffer copy (CopyRectangle()) as well as the expensive
RGB pixel conversion in DecompressJpegRectBPP(). The TurboJPEG
wrapper performs RGB pixel conversion more optimally, and only when
necessary (it uses the libjpeg-turbo colorspace extensions when
available, in order to avoid RGB conversion.)
- The other Tight subencoding types are also now decoded directly into
the framebuffer, which eliminates buffer copies.
- The Tight decoder now supports the rfbTightNoZlib extension, which
allows the server to bypass zlib compression when Compression Level 0
is selected. The encoder already supports this extension. Passing
the data stream through zlib when Compression Level 0 is selected
needlessly wastes CPU time, since all zlib is doing is copying the
data internally into its own structures.
Diffstat (limited to 'rfb')
| -rw-r--r-- | rfb/rfbclient.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/rfb/rfbclient.h b/rfb/rfbclient.h index 72d672a..ec6ee55 100644 --- a/rfb/rfbclient.h +++ b/rfb/rfbclient.h @@ -7,6 +7,7 @@ */ /* + * Copyright (C) 2017 D. R. Commander. All Rights Reserved. * Copyright (C) 2000, 2001 Const Kaplinsky. All Rights Reserved. * Copyright (C) 2000 Tridia Corporation. All Rights Reserved. * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. @@ -51,6 +52,7 @@ #endif #include <rfb/rfbproto.h> #include <rfb/keysym.h> +#include "turbojpeg.h" #ifdef LIBVNCSERVER_HAVE_SASL #include <sasl/sasl.h> @@ -295,7 +297,7 @@ typedef struct _rfbClient { uint8_t tightPrevRow[2048*3*sizeof(uint16_t)]; #ifdef LIBVNCSERVER_HAVE_LIBJPEG - /** JPEG decoder state. */ + /** JPEG decoder state (obsolete-- do not use). */ rfbBool jpegError; struct jpeg_source_mgr* jpegSrcManager; @@ -422,6 +424,14 @@ typedef struct _rfbClient { GetUserProc GetUser; #endif /* LIBVNCSERVER_HAVE_SASL */ + +#ifdef LIBVNCSERVER_HAVE_LIBZ +#ifdef LIBVNCSERVER_HAVE_LIBJPEG + /** JPEG decoder state. */ + tjhandle tjhnd; + +#endif +#endif } rfbClient; /* cursor.c */ |