107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VQ_H
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#define VQ_H
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/****************************************************************************
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*
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* C O N F I D E N T I A L --- W E S T W O O D S T U D I O S
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*
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*----------------------------------------------------------------------------
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*
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* NAME
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* vq.h
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*
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* DESCRIPTION
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* VQ file definition
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*
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* PROGRAMMER
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* Denzil E. Long, Jr.
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*
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* DATE
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* September 28, 1995
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*
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* NOTES
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* VQ file organization:
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*
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* Header: This structure contains all the data pertaining to the VQ.
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* (See structure definition for details)
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*
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* Size: 40 bytes
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*
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* Palette: Color palette used by this VQ. Stored as 24 bit RGB entries.
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*
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* Size: (PaletteRange * 3) bytes
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*
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* Codebook: Sequence of vector blocks used to represent the VQ image.
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* Also called the dictionary. The sequence is sorted by
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* usage, so the first entry is the most commonly used block.
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*
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* Size: ((BlockWidth * BlockHeight) * CodebookSize) bytes
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*
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* Pointers: Vector pointer map used to indicate the construction of
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* the vector blocks. Also called codewords.
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*
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* Size: (((ImageWidth / BlockWidth)
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* * (ImageHeight / BlockHeight)) * 2)
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*
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* Pointer format:
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*
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* Single color - Value less than or equal to 'Num1Color'
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* Multi Color - Value greater than 'Num1Color'
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*
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****************************************************************************/
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/* VQHeader - VQ header structure.
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*
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* ImageSize - Compressed image size
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* ImageWidth - Image x-dimension
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* ImageHeight - Image y-dimension
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* BlockWidth - Block x-dimension
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* BlockHeight - Block y-dimension
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* BlockType - Block type
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* PaletteRange - Number of palette colors
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* Num1Color - Number of 1-color blocks & 1-color colors
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* CodebookSize - Number of actual codebook entries
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* CodingFlag - Flag for 2-color blocks
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* FrameDiffMethod - Frame differencing method
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* ForcedPalette - Force a palette on image
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* F555Palette - Flag for output 15-bit palette
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* VQVersion - VQ Version #
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* pad[5] - Pad out to 40 bytes total
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*/
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typedef struct _VQHeader {
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unsigned long ImageSize;
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unsigned short ImageWidth;
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unsigned short ImageHeight;
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unsigned short BlockWidth;
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unsigned short BlockHeight;
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unsigned short BlockType;
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unsigned short PaletteRange;
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unsigned short Num1Color;
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unsigned short CodebookSize;
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unsigned short CodingFlag;
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unsigned short FrameDiffMethod;
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unsigned short ForcedPalette;
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unsigned short F555Palette;
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unsigned short VQVersion;
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unsigned short pad[5];
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} VQHeader;
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#endif /* VQ_H */
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