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/* $Id: HGSMIChannels.h $ */
/** @file
*
* VBox Host Guest Shared Memory Interface (HGSMI).
* Host/Guest shared part.
* Channel identifiers.
*/
/*
* Copyright (C) 2006-2022 Oracle and/or its affiliates.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef VBOX_INCLUDED_Graphics_HGSMIChannels_h
#define VBOX_INCLUDED_Graphics_HGSMIChannels_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
/*
* Each channel has an 8 bit identifier. There are a number of predefined
* (hardcoded) channels.
*
* HGSMI_CH_HGSMI channel can be used to map a string channel identifier
* to a free 16 bit numerical value. values are allocated in range
* [HGSMI_CH_STRING_FIRST;HGSMI_CH_STRING_LAST].
*/
/* Predefined channel identifiers. Used internally by VBOX to simplify the channel setup. */
/* A reserved channel value */
#define HGSMI_CH_RESERVED 0x00
/* HGCMI: setup and configuration */
#define HGSMI_CH_HGSMI 0x01
/* Graphics: VBVA */
#define HGSMI_CH_VBVA 0x02
/* Graphics: Seamless with a single guest region */
#define HGSMI_CH_SEAMLESS 0x03
/* Graphics: Seamless with separate host windows */
#define HGSMI_CH_SEAMLESS2 0x04
/* Graphics: OpenGL HW acceleration */
#define HGSMI_CH_OPENGL 0x05
/* Dynamically allocated channel identifiers. */
/* The first channel index to be used for string mappings (inclusive) */
#define HGSMI_CH_STRING_FIRST 0x20
/* The last channel index for string mappings (inclusive) */
#define HGSMI_CH_STRING_LAST 0xff
/* Check whether the channel identifier is allocated for a dynamic channel */
#define HGSMI_IS_DYNAMIC_CHANNEL(_channel) (((uint8_t)(_channel) & 0xE0) != 0)
#endif /* !VBOX_INCLUDED_Graphics_HGSMIChannels_h */
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