LookingGlass/common/KVMFR.h

87 lines
2.6 KiB
C

/*
Looking Glass - KVM FrameRelay (KVMFR)
Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
https://looking-glass.hostfission.com
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*/
#pragma once
#include <stdint.h>
#define KVMFR_HEADER_MAGIC "[[KVMFR]]"
#define KVMFR_HEADER_VERSION 4
typedef enum FrameType
{
FRAME_TYPE_INVALID ,
FRAME_TYPE_ARGB , // ABGR interleaved: A,R,G,B 32bpp
FRAME_TYPE_RGB , // RGB interleaved : R,G,B 24bpp
FRAME_TYPE_MAX , // sentinel value
}
FrameType;
typedef enum CursorType
{
CURSOR_TYPE_COLOR ,
CURSOR_TYPE_MONOCHROME ,
CURSOR_TYPE_MASKED_COLOR
}
CursorType;
#define KVMFR_CURSOR_FLAG_VISIBLE 1 // cursor is visible
#define KVMFR_CURSOR_FLAG_SHAPE 2 // shape updated
#define KVMFR_CURSOR_FLAG_POS 4 // position updated
typedef struct KVMFRCursor
{
uint8_t flags; // KVMFR_CURSOR_FLAGS
int16_t x, y; // cursor x & y position
CursorType type; // shape buffer data type
}
KVMFRCursor;
typedef struct KVMFRFrame
{
FrameType type; // the frame data type
uint32_t width; // the width
uint32_t height; // the height
uint32_t stride; // the row stride (zero if cursor data)
uint32_t pitch; // the row pitch (stride in bytes)
uint64_t dataPos; // offset to the frame
}
KVMFRFrame;
#define KVMFR_HEADER_FLAG_FRAME 1 // frame update available
#define KVMFR_HEADER_FLAG_CURSOR 2 // cursor update available
#define KVMFR_HEADER_FLAG_RESTART 4 // restart signal from client
#define KVMFR_HEADER_FLAG_READY 8 // ready signal from client
typedef struct KVMFRDetail
{
KVMFRFrame frame; // the frame information
KVMFRCursor cursor; // the cursor information
}
KVMFRDetail;
typedef struct KVMFRHeader
{
char magic[sizeof(KVMFR_HEADER_MAGIC)];
uint32_t version; // version of this structure
uint32_t updateCount; // updated each change
uint8_t flags; // KVMFR_HEADER_FLAGS
KVMFRDetail detail; // details
}
KVMFRHeader;