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Diffstat (limited to '')
| -rw-r--r-- | include/VBox/Graphics/HGSMIChannels.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/include/VBox/Graphics/HGSMIChannels.h b/include/VBox/Graphics/HGSMIChannels.h new file mode 100644 index 00000000..0de8e2d9 --- /dev/null +++ b/include/VBox/Graphics/HGSMIChannels.h @@ -0,0 +1,77 @@ +/* $Id: HGSMIChannels.h $ */ +/** @file + * + * VBox Host Guest Shared Memory Interface (HGSMI). + * Host/Guest shared part. + * Channel identifiers. + */ + +/* + * Copyright (C) 2006-2020 Oracle Corporation + * + * 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 */ |