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62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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KVMGFX Client - A KVM Client for VGA Passthrough
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Copyright (C) 2017 Geoffrey McRae <geoff@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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#define KVMGFX_HEADER_MAGIC "[[KVMGFXHeader]]"
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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_XOR , // xor of the previous frame: R, G, B
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FRAME_TYPE_YUV444P , // YUV444 planar
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FRAME_TYPE_YUV420P , // YUV420 12bpp
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FRAME_TYPE_ARGB10 , // rgb 10 bit packed, a2 b10 r10
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FRAME_TYPE_MAX , // sentinel value
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} FrameType;
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typedef enum FrameComp
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{
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FRAME_COMP_NONE , // no compression
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FRAME_COMP_BLACK_RLE , // basic run length encoding of black pixels for XOR mode
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FRAME_COMP_MAX , // sentinel valule
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} FrameComp;
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struct KVMGFXHeader
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{
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char magic[sizeof(KVMGFX_HEADER_MAGIC)];
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uint32_t version; // version of this structure
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uint16_t hostID; // the host ivshmem client id
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uint16_t guestID; // the guest ivshmem client id
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FrameType frameType; // the frame type
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FrameComp compType; // frame compression mode
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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
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int32_t mouseX; // the initial mouse X position
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int32_t mouseY; // the initial mouse Y position
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uint64_t dataLen; // total lengh of the data after this header
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};
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#pragma pack(push,1)
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struct RLEHeader
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{
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uint8_t magic[3];
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uint16_t length;
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};
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#pragma pack(pop) |