diff options
Diffstat (limited to 'ui/vnc-enc-tight.h')
| -rw-r--r-- | ui/vnc-enc-tight.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/ui/vnc-enc-tight.h b/ui/vnc-enc-tight.h index 9b0910c79a..a3add788e2 100644 --- a/ui/vnc-enc-tight.h +++ b/ui/vnc-enc-tight.h @@ -42,8 +42,9 @@ * bit 3: if 1, then compression stream 3 should be reset; * bits 7-4: if 1000 (0x08), then the compression type is "fill", * if 1001 (0x09), then the compression type is "jpeg", + * if 1010 (0x0A), then the compression type is "png", * if 0xxx, then the compression type is "basic", - * values greater than 1001 are not valid. + * values greater than 1010 are not valid. * * If the compression type is "basic", then bits 6..4 of the * compression control byte (those xxx in 0xxx) specify the following: @@ -53,17 +54,17 @@ * bit 6: if 1, then a "filter id" byte is following this byte. * *-- The data that follows after the compression control byte described - * above depends on the compression type ("fill", "jpeg" or "basic"). + * above depends on the compression type ("fill", "jpeg", "png" or "basic"). * *-- If the compression type is "fill", then the only pixel value follows, in * client pixel format (see NOTE 1). This value applies to all pixels of the * rectangle. * - *-- If the compression type is "jpeg", the following data stream looks like - * this: + *-- If the compression type is "jpeg" or "png", the following data stream + * looks like this: * * 1..3 bytes: data size (N) in compact representation; - * N bytes: JPEG image. + * N bytes: JPEG or PNG image. * * Data size is compactly represented in one, two or three bytes, according * to the following scheme: @@ -144,7 +145,7 @@ *-- NOTE 2. The decoder must reset compression streams' states before * decoding the rectangle, if some of bits 0,1,2,3 in the compression control * byte are set to 1. Note that the decoder must reset zlib streams even if - * the compression type is "fill" or "jpeg". + * the compression type is "fill", "jpeg" or "png". * *-- NOTE 3. The "gradient" filter and "jpeg" compression may be used only * when bits-per-pixel value is either 16 or 32, not 8. @@ -158,7 +159,8 @@ #define VNC_TIGHT_EXPLICIT_FILTER 0x04 #define VNC_TIGHT_FILL 0x08 #define VNC_TIGHT_JPEG 0x09 -#define VNC_TIGHT_MAX_SUBENCODING 0x09 +#define VNC_TIGHT_PNG 0x0A +#define VNC_TIGHT_MAX_SUBENCODING 0x0A /* Filters to improve compression efficiency */ #define VNC_TIGHT_FILTER_COPY 0x00 |