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91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*
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Looking Glass - KVM FrameRelay (KVMFR)
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Copyright (C) 2017 Geoffrey McRae <geoff@hostfission.com>
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https://looking-glass.hostfission.com
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include <stdint.h>
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#define KVMFR_HEADER_MAGIC "[[KVMFR]]"
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#define KVMFR_HEADER_VERSION 5
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typedef enum FrameType
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{
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FRAME_TYPE_INVALID ,
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FRAME_TYPE_ARGB , // ABGR interleaved: A,R,G,B 32bpp
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FRAME_TYPE_RGB , // RGB interleaved : R,G,B 24bpp
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FRAME_TYPE_MAX , // sentinel value
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}
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FrameType;
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typedef enum CursorType
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{
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CURSOR_TYPE_COLOR ,
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CURSOR_TYPE_MONOCHROME ,
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CURSOR_TYPE_MASKED_COLOR
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}
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CursorType;
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#define KVMFR_CURSOR_FLAG_VISIBLE 1 // cursor is visible
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#define KVMFR_CURSOR_FLAG_SHAPE 2 // shape updated
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#define KVMFR_CURSOR_FLAG_POS 4 // position updated
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typedef struct KVMFRCursor
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{
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uint8_t flags; // KVMFR_CURSOR_FLAGS
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int16_t x, y; // cursor x & y position
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uint32_t version; // shape version
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CursorType type; // shape buffer data type
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uint32_t width; // width of the shape
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uint32_t height; // height of the shape
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uint32_t pitch; // row length in bytes of the shape
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uint64_t dataPos; // offset to the shape data
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}
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KVMFRCursor;
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typedef struct KVMFRFrame
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{
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FrameType type; // the frame data type
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uint32_t width; // the width
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uint32_t height; // the height
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uint32_t stride; // the row stride (zero if cursor data)
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uint32_t pitch; // the row pitch (stride in bytes)
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uint64_t dataPos; // offset to the frame
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}
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KVMFRFrame;
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#define KVMFR_HEADER_FLAG_FRAME 1 // frame update available
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#define KVMFR_HEADER_FLAG_CURSOR 2 // cursor update available
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#define KVMFR_HEADER_FLAG_RESTART 4 // restart signal from client
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#define KVMFR_HEADER_FLAG_READY 8 // ready signal from client
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typedef struct KVMFRDetail
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{
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KVMFRFrame frame; // the frame information
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KVMFRCursor cursor; // the cursor information
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}
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KVMFRDetail;
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typedef struct KVMFRHeader
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{
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char magic[sizeof(KVMFR_HEADER_MAGIC)];
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uint32_t version; // version of this structure
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uint8_t flags; // KVMFR_HEADER_FLAGS
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KVMFRDetail detail; // details
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}
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KVMFRHeader;
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