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175 lines
6.7 KiB
C
175 lines
6.7 KiB
C
//-------------------------------------------------------------------------
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/*
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Copyright (C) 1996, 2003 - 3D Realms Entertainment
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This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
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Duke Nukem 3D 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.
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See the GNU General Public License for more details.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Original Source: 1996 - Todd Replogle
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Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
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Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com)
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*/
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//-------------------------------------------------------------------------
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/////////////////////////////////////////////////////////////////////////////
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//
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// ANIMLIB.H
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _animlib_public_
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#define _animlib_public_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __GNUC__
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# ifndef PACKED
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# define PACKED __attribute__ ((packed))
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# endif
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#else
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# define PACKED
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# ifdef _MSC_VER
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# pragma pack(1)
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# endif
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# ifdef __WATCOMC__
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# pragma pack(push,1);
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# endif
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#endif
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// structure declarations for deluxe animate large page files */
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typedef struct PACKED
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{
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uint32_t id; // 4 character ID == "LPF " */
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uint16_t maxLps; // max # largePages allowed. 256 FOR NOW. */
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uint16_t nLps; // # largePages in this file. */
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uint32_t nRecords; // # records in this file. 65534 is current limit plus */
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// one for last-to-first delta for looping the animation */
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uint16_t maxRecsPerLp; // # records permitted in an lp. 256 FOR NOW. */
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uint16_t lpfTableOffset; // Absolute Seek position of lpfTable. 1280 FOR NOW.
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// The lpf Table is an array of 256 large page structures
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// that is used to facilitate finding records in an anim
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// file without having to seek through all of the Large
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// Pages to find which one a specific record lives in. */
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uint32_t contentType; // 4 character ID == "ANIM" */
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uint16_t width; // Width of screen in pixels. */
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uint16_t height; // Height of screen in pixels. */
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uint8_t variant; // 0==ANIM. */
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uint8_t version; // 0==frame rate is multiple of 18 cycles/sec.
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// 1==frame rate is multiple of 70 cycles/sec. */
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uint8_t hasLastDelta; // 1==Last record is a delta from last-to-first frame. */
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uint8_t lastDeltaValid; // 0==The last-to-first delta (if present) hasn't been
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// updated to match the current first&last frames, so it
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// should be ignored. */
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uint8_t pixelType; // /* 0==256 color. */
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uint8_t CompressionType;// /* 1==(RunSkipDump) Only one used FOR NOW. */
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uint8_t otherRecsPerFrm;// /* 0 FOR NOW. */
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uint8_t bitmaptype; // /* 1==320x200, 256-color. Only one implemented so far. */
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uint8_t recordTypes[32];// /* Not yet implemented. */
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uint32_t nFrames; // /* In case future version adds other records at end of
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// file, we still know how many actual frames.
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// NOTE: DOES include last-to-first delta when present. */
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uint16_t framesPerSecond; // Number of frames to play per second. */
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uint16_t pad2[29]; // 58 bytes of filler to round up to 128 bytes total. */
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} lpfileheader;
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// this is the format of a large page structure
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typedef struct PACKED
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{
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uint16_t baseRecord; // Number of first record in this large page.
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uint16_t nRecords; // Number of records in lp.
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// bit 15 of "nRecords" == "has continuation from previous lp".
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// bit 14 of "nRecords" == "final record continues on next lp".
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uint16_t nBytes; // Total number of bytes of contents, excluding header.
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} lp_descriptor;
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#undef PACKED
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#ifdef _MSC_VER
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# pragma pack()
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#endif
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#ifdef __WATCOMC__
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# pragma pack(pop);
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#endif
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typedef struct
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{
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uint16_t framecount; // current frame of anim
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lpfileheader lpheader; // file header will be loaded into this structure
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lp_descriptor LpArray[256]; // arrays of large page structs used to find frames
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uint16_t curlpnum; // initialize to an invalid Large page number
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lp_descriptor curlp; // header of large page currently in memory
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uint16_t thepage[0x8000]; // buffer where current large page is loaded
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uint8_t imagebuffer[0x10000]; // buffer where anim frame is decoded
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uint8_t * buffer;
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uint8_t pal[768];
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int32_t currentframe;
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} anim_t;
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//****************************************************************************
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//
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// ANIM_LoadAnim ()
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//
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// Setup internal anim data structure
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//
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//****************************************************************************
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void ANIM_LoadAnim (char * buffer);
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//****************************************************************************
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//
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// ANIM_FreeAnim ()
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//
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// Free up internal anim data structure
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//
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//****************************************************************************
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void ANIM_FreeAnim ( void );
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//****************************************************************************
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//
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// ANIM_NumFrames ()
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//
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// returns the number of frames in the current anim
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//
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//****************************************************************************
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int32_t ANIM_NumFrames ( void );
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//****************************************************************************
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//
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// ANIM_DrawFrame ()
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//
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// Draw the frame to a returned buffer
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//
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//****************************************************************************
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uint8_t * ANIM_DrawFrame (int32_t framenumber);
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//****************************************************************************
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//
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// ANIM_GetPalette ()
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//
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// return the palette of the anim
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//****************************************************************************
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uint8_t * ANIM_GetPalette ( void );
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#ifdef __cplusplus
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};
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#endif
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#endif
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