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https://github.com/libretro/scummvm.git
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145 lines
4.9 KiB
C++
145 lines
4.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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* Palette Allocator Definitions
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*/
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#ifndef TINSEL_PALETTE_H // prevent multiple includes
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#define TINSEL_PALETTE_H
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#include "tinsel/dw.h"
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namespace Tinsel {
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typedef uint32 COLORREF;
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#define RGB(r,g,b) ((COLORREF)TO_LE_32(((uint8)(r)|((uint16)(g)<<8))|(((uint32)(uint8)(b))<<16)))
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#define GetRValue(rgb) ((uint8)(FROM_LE_32(rgb)))
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#define GetGValue(rgb) ((uint8)(((uint16)(FROM_LE_32(rgb))) >> 8))
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#define GetBValue(rgb) ((uint8)((FROM_LE_32(rgb))>>16))
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enum {
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MAX_COLOURS = 256, //!< maximum number of colours - for VGA 256
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BITS_PER_PIXEL = 8, //!< number of bits per pixel for VGA 256
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MAX_INTENSITY = 255, //!< the biggest value R, G or B can have
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NUM_PALETTES = 3, //!< number of palettes
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// Discworld has some fixed apportioned bits in the palette.
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BGND_DAC_INDEX = 0, //!< index of background colour in Video DAC
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FGND_DAC_INDEX = 1, //!< index of first foreground colour in Video DAC
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TBLUE1 = 228, //!< Blue used in translucent rectangles
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TBLUE2 = 229, //!< Blue used in translucent rectangles
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TBLUE3 = 230, //!< Blue used in translucent rectangles
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TBLUE4 = 231, //!< Blue used in translucent rectangles
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TALKFONT_COL = 233
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};
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// some common colours
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#define BLACK (RGB(0, 0, 0))
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#define WHITE (RGB(MAX_INTENSITY, MAX_INTENSITY, MAX_INTENSITY))
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#define RED (RGB(MAX_INTENSITY, 0, 0))
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#define GREEN (RGB(0, MAX_INTENSITY, 0))
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#define BLUE (RGB(0, 0, MAX_INTENSITY))
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#define YELLOW (RGB(MAX_INTENSITY, MAX_INTENSITY, 0))
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#define MAGENTA (RGB(MAX_INTENSITY, 0, MAX_INTENSITY))
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#define CYAN (RGB(0, MAX_INTENSITY, MAX_INTENSITY))
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#include "common/pack-start.h" // START STRUCT PACKING
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/** hardware palette structure */
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struct PALETTE {
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int32 numColours; //!< number of colours in the palette
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COLORREF palRGB[MAX_COLOURS]; //!< actual palette colours
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} PACKED_STRUCT;
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#include "common/pack-end.h" // END STRUCT PACKING
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/** palette queue structure */
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struct PALQ {
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SCNHANDLE hPal; //!< handle to palette data struct
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int objCount; //!< number of objects using this palette
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int posInDAC; //!< palette position in the video DAC
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int numColours; //!< number of colours in the palette
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};
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#define PALETTE_MOVED 0x8000 // when this bit is set in the "posInDAC"
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// field - the palette entry has moved
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// Translucent objects have NULL pPal
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#define HasPalMoved(pPal) (((pPal) != NULL) && ((pPal)->posInDAC & PALETTE_MOVED))
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/*----------------------------------------------------------------------*\
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|* Palette Manager Function Prototypes *|
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\*----------------------------------------------------------------------*/
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void ResetPalAllocator(void); // wipe out all palettes
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#ifdef DEBUG
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void PaletteStats(void); // Shows the maximum number of palettes used at once
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#endif
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void PalettesToVideoDAC(void); // Update the video DAC with palettes currently the the DAC queue
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void UpdateDACqueueHandle(
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int posInDAC, // position in video DAC
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int numColours, // number of colours in palette
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SCNHANDLE hPalette); // handle to palette
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void UpdateDACqueue( // places a palette in the video DAC queue
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int posInDAC, // position in video DAC
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int numColours, // number of colours in palette
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COLORREF *pColours); // list of RGB tripples
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PALQ *AllocPalette( // allocate a new palette
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SCNHANDLE hNewPal); // palette to allocate
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void FreePalette( // free a palette allocated with "AllocPalette"
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PALQ *pFreePal); // palette queue entry to free
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PALQ *FindPalette( // find a palette in the palette queue
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SCNHANDLE hSrchPal); // palette to search for
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void SwapPalette( // swaps palettes at the specified palette queue position
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PALQ *pPalQ, // palette queue position
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SCNHANDLE hNewPal); // new palette
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PALQ *GetNextPalette( // returns the next palette in the queue
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PALQ *pStrtPal); // queue position to start from - when NULL will start from beginning of queue
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COLORREF GetBgndColour(void); // returns current background colour
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void SetBgndColour( // sets current background colour
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COLORREF colour); // colour to set the background to
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void CreateTranslucentPalette(SCNHANDLE BackPal);
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} // end of namespace Tinsel
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#endif // TINSEL_PALETTE_H
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