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-
- /* svo.h
- - Include File for SVO Support Routines -
- (c) 1993-94 by Andreas R. Kleinert
- Last changes : 25.02.1994
- */
-
- #ifndef SVO_H
- #define SVO_H
-
- #ifndef GRAPHICS_VIEW_H
- #include <graphics/view.h>
- #endif /* GRAPHICS_VIEW_H */
-
-
- #define BADFLAGS (SPRITES|VP_HIDE|GENLOCK_AUDIO|GENLOCK_VIDEO)
- #define FLAGMASK (~BADFLAGS)
- #define BADFLAGS_13 (EXTENDED_MODE|SPRITES|VP_HIDE|GENLOCK_AUDIO|GENLOCK_VIDEO)
- #define FLAGMASK_13 (~BADFLAGS)
-
-
- /* ********** */
- /* SVO Header */
- /* ********** */
-
- /* File ID Definitions */
-
- #define SVO_ID "SVO Graphics File V1.0"
- #define SVO_ID_LEN 22 /* len = 21 + 0 Byte */
-
- struct SVOHeader
- {
- UBYTE svo_ID [SVO_ID_LEN];
-
- UBYTE svo_PixelBits; /* 1 or 8 (16, 24, 32, ...) */
- UBYTE svo_PixelDepth; /* number of svo_PixelBits sized Planes */
-
- UBYTE svo_Version; /* (see below) */
-
- ULONG svo_LeftEdge; /* Screen Dimensions */
- ULONG svo_TopEdge;
- ULONG svo_Width;
- ULONG svo_Height;
-
- ULONG svo_Depth; /* resulting Intuition Screen BitPlanes */
-
- UWORD svo_ViewMode16; /* OS V1.2+ ScreenMode ID */
- UWORD svo_BAD_ViewMode32; /* DO NOT USE (see below) */
-
- ULONG svo_BytesPerLine;
-
- UBYTE svo_Colors[256][3]; /* if svo_PixelDepth == 1 */
-
- /* ----- added with svo_Version 1 -------------------------------- */
-
- ULONG svo_ViewMode32; /* OS V2.04+ ScreenMode ID (see below) */
-
-
- /* ----- header size may grow in the future (check svo_Version) -- */
- };
-
- #define SVOHEADER_SIZE (sizeof(struct SVOHeader))
-
- #define SVO_HEADER_OLDVERSION ((UBYTE) 0) /* first version */
- #define SVO_HEADER_VERSION ((UBYTE) 1) /* current version */
-
-
- /* Notes :
-
- (1)
-
- Do not READ the svo_BAD_ViewMode32 value.
- Check for svo_Version > 0 and READ svo_ViewMode32 instead.
- But do WRITE both values (svo_ViewMode32 and svo_BAD_ViewMode32),
- for compatibility reasons.
-
- (2)
-
- For later support of graphic cards there are two possible ways to store
- graphics :
-
- - planar, one full plane following the next,
- with svo_Depth planes like in IFF-ILBM (svo_PixelBits == 1) :
-
- Colors = (1<<svo_PixelBits-1)<<svo_PixelDepth
- = 1<<svo_PixelDepth
- = 1<<svo_Depth
-
- - bytewise planar, where each plane consists on
- svo_PixelDepth bytes (svo_PixelBits == 8) :
-
- Colors = (1<<svo_PixelBits-1)<<svo_PixelDepth
- = 1<<svo_Depth
-
- BUT != 1<<svo_PixelDepth
-
- */
-
- #endif /* SVO_H */
-