mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-27 04:00:42 +00:00
318 lines
12 KiB
C
318 lines
12 KiB
C
//-------------------------------------------------------------------------
|
|
/*
|
|
Copyright (C) 1996, 2003 - 3D Realms Entertainment
|
|
|
|
This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
|
|
|
|
Duke Nukem 3D is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Original Source: 1996 - Todd Replogle
|
|
Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
|
|
Modifications for JonoF's port by Jonathon Fowler (jonof@edgenetwk.com)
|
|
*/
|
|
//-------------------------------------------------------------------------
|
|
|
|
#include "compat.h"
|
|
#include "animlib.h"
|
|
|
|
//****************************************************************************
|
|
//
|
|
// LOCALS
|
|
//
|
|
//****************************************************************************
|
|
|
|
# pragma pack(push,1)
|
|
|
|
/* structure declarations for deluxe animate large page files, doesn't
|
|
need to be in the header because there are no exposed functions
|
|
that use any of this directly */
|
|
|
|
typedef struct lpfileheaderstruct
|
|
{
|
|
uint32_t id; /* 4 uint8_tacter ID == "LPF " */
|
|
uint16_t maxLps; /* max # largePages allowed. 256 FOR NOW. */
|
|
uint16_t nLps; /* # largePages in this file. */
|
|
uint32_t nRecords; /* # records in this file. 65534 is current limit + ring */
|
|
uint16_t maxRecsPerLp; /* # records permitted in an lp. 256 FOR NOW. */
|
|
uint16_t lpfTableOffset; /* Absolute Seek position of lpfTable. 1280 FOR NOW. */
|
|
uint32_t contentType; /* 4 character ID == "ANIM" */
|
|
uint16_t width; /* Width of screen in pixels. */
|
|
uint16_t height; /* Height of screen in pixels. */
|
|
uint8_t variant; /* 0==ANIM. */
|
|
uint8_t version; /* 0==frame rate in 18/sec, 1= 70/sec */
|
|
uint8_t hasLastDelta; /* 1==Last record is a delta from last-to-first frame. */
|
|
uint8_t lastDeltaValid; /* 0==Ignore ring frame. */
|
|
uint8_t pixelType; /* 0==256 color. */
|
|
uint8_t CompressionType; /* 1==(RunSkipDump) Only one used FOR NOW. */
|
|
uint8_t otherRecsPerFrm; /* 0 FOR NOW. */
|
|
uint8_t bitmaptype; /* 1==320x200, 256-color. Only one implemented so far. */
|
|
uint8_t recordTypes[32]; /* Not yet implemented. */
|
|
uint32_t nFrames; /* Number of actual frames in the file, includes ring frame. */
|
|
uint16_t framesPerSecond; /* Number of frames to play per second. */
|
|
uint16_t pad2[29]; /* 58 bytes of filler to round up to 128 bytes total. */
|
|
}
|
|
lpfileheader; /* (comments from original source) */
|
|
|
|
// this is the format of a large page structure
|
|
typedef struct
|
|
{
|
|
uint16_t baseRecord; // Number of first record in this large page.
|
|
uint16_t nRecords; // Number of records in lp.
|
|
// bit 15 of "nRecords" == "has continuation from previous lp".
|
|
// bit 14 of "nRecords" == "final record continues on next lp".
|
|
uint16_t nBytes; // Total number of bytes of contents, excluding header.
|
|
} lp_descriptor;
|
|
|
|
#pragma pack(pop)
|
|
|
|
#define IMAGEBUFFERSIZE 0x10000
|
|
|
|
typedef struct
|
|
{
|
|
uint16_t framecount; // current frame of anim
|
|
lpfileheader * lpheader; // file header will be loaded into this structure
|
|
lp_descriptor * LpArray; // arrays of large page structs used to find frames
|
|
uint16_t curlpnum; // initialize to an invalid Large page number
|
|
lp_descriptor * curlp; // header of large page currently in memory
|
|
uint16_t * thepage; // buffer where current large page is loaded
|
|
uint8_t imagebuffer[IMAGEBUFFERSIZE]; // buffer where anim frame is decoded
|
|
uint8_t * buffer;
|
|
uint8_t pal[768];
|
|
int32_t currentframe;
|
|
} anim_t;
|
|
|
|
static anim_t * anim = NULL;
|
|
|
|
//****************************************************************************
|
|
//
|
|
// findpage ()
|
|
// - return the large page number a given frame resides in
|
|
//
|
|
//****************************************************************************
|
|
|
|
static inline uint16_t findpage(uint16_t framenumber)
|
|
{
|
|
// curlpnum is initialized to 0xffff, obviously
|
|
uint16_t i = (uint16_t)(anim->curlpnum & ~0xffff);
|
|
int32_t j = 0;
|
|
|
|
if (framenumber < anim->currentframe)
|
|
i = 0, j++;
|
|
|
|
// this scans the last used page and higher first and then scans the
|
|
// previously accessed pages afterwards if it doesn't find anything
|
|
do
|
|
{
|
|
for (; i<anim->lpheader->nLps; i++)
|
|
if (anim->LpArray[i].baseRecord <= framenumber &&
|
|
anim->LpArray[i].baseRecord + anim->LpArray[i].nRecords > framenumber)
|
|
return i;
|
|
|
|
if (!j && i == anim->lpheader->nLps)
|
|
{
|
|
// handle out of order pages... I don't think any Duke .ANM files
|
|
// have them, but they're part of the file spec
|
|
i = 0, j++;
|
|
continue;
|
|
}
|
|
}
|
|
while (0);
|
|
|
|
return i;
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// loadpage ()
|
|
// - seek out and set pointers to the large page specified
|
|
//
|
|
//****************************************************************************
|
|
|
|
static inline void loadpage(uint16_t pagenumber, uint16_t **pagepointer)
|
|
{
|
|
if (anim->curlpnum == pagenumber)
|
|
return;
|
|
|
|
anim->curlp = &anim->LpArray[(anim->curlpnum = pagenumber)];
|
|
*pagepointer = (uint16_t *)(anim->buffer + 0xb00 + (pagenumber*IMAGEBUFFERSIZE) +
|
|
sizeof(lp_descriptor) + sizeof(uint16_t));
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// decodeframe ()
|
|
// - I found this less obfuscated version of the .ANM "decompressor",
|
|
// (c) 1998 "Jari Komppa aka Sol/Trauma". This code is public domain
|
|
// but has been mostly rewritten by me.
|
|
//
|
|
// - As a side note, it looks like this format came about in 1989 and
|
|
// never went anywhere after that, and appears to have been the format
|
|
// used by Electronic Arts' DeluxePaint Animation, which never made it
|
|
// past version 1.0.
|
|
//
|
|
//****************************************************************************
|
|
|
|
static void decodeframe(uint8_t * srcP, uint8_t * dstP)
|
|
{
|
|
do
|
|
{
|
|
int32_t count=*srcP++;
|
|
|
|
if (!count) /* Short RLE */
|
|
{
|
|
int32_t color = *(srcP+1);
|
|
count = *(uint8_t *)((srcP += sizeof(int16_t)) - sizeof(int16_t));
|
|
Bmemset((dstP += count) - count, color, count);
|
|
continue;
|
|
}
|
|
else if ((count & 0x80) == 0) /* Short copy */
|
|
{
|
|
Bmemcpy((dstP += count) - count, (srcP += count) - count, count);
|
|
continue;
|
|
}
|
|
else if ((count &= ~0x80) > 0) /* short skip */
|
|
{
|
|
dstP += count;
|
|
continue;
|
|
}
|
|
|
|
/* long op */
|
|
count = B_LITTLE16(*((uint16_t *)((srcP += sizeof(int16_t)) - sizeof(int16_t))));
|
|
|
|
if (!count) /* stop sign */
|
|
return;
|
|
else if ((count & 0x8000) == 0) /* long skip */
|
|
{
|
|
dstP += count;
|
|
continue;
|
|
}
|
|
else if ((count &= ~0x8000) & 0x4000) /* long RLE */
|
|
{
|
|
int32_t color = *srcP++;
|
|
count &= ~0x4000;
|
|
Bmemset((dstP += count) - count, color, count);
|
|
continue;
|
|
}
|
|
|
|
/* long copy */
|
|
Bmemcpy((dstP += count) - count, (srcP += count) - count, count);
|
|
}
|
|
while (1);
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// renderframe ()
|
|
// - draw the frame sepcified from the large page in the buffer pointed to
|
|
//
|
|
//****************************************************************************
|
|
|
|
static void renderframe(uint16_t framenumber, uint16_t *pagepointer)
|
|
{
|
|
uint8_t *ppointer;
|
|
uint16_t offset = 0;
|
|
uint16_t frame = framenumber - anim->curlp->baseRecord;
|
|
|
|
while (frame--) offset += B_LITTLE16(pagepointer[frame]);
|
|
|
|
ppointer = (uint8_t *)(pagepointer) + anim->curlp->nRecords*2 + offset + 4;
|
|
|
|
if ((ppointer-4)[1])
|
|
ppointer += B_LITTLE16(((uint16_t *)(ppointer-4))[1]) + (B_LITTLE16(((uint16_t *)(ppointer-4))[1]) & 1);
|
|
|
|
decodeframe((uint8_t *)ppointer, (uint8_t *)anim->imagebuffer);
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// drawframe ()
|
|
// - high level frame draw routine
|
|
//
|
|
//****************************************************************************
|
|
|
|
static inline void drawframe(uint16_t framenumber)
|
|
{
|
|
loadpage(findpage(framenumber), &anim->thepage);
|
|
renderframe(framenumber, anim->thepage);
|
|
}
|
|
|
|
|
|
void ANIM_LoadAnim(char * buffer)
|
|
{
|
|
uint16_t i;
|
|
|
|
anim = Brealloc(anim, sizeof(anim_t));
|
|
|
|
anim->curlpnum = 0xffff;
|
|
anim->currentframe = -1;
|
|
|
|
// this just modifies the data in-place instead of copying it elsewhere now
|
|
anim->lpheader = (lpfileheader *)(anim->buffer = (uint8_t *)buffer);
|
|
|
|
anim->lpheader->id = B_LITTLE32(anim->lpheader->id);
|
|
anim->lpheader->maxLps = B_LITTLE16(anim->lpheader->maxLps);
|
|
anim->lpheader->nLps = B_LITTLE16(anim->lpheader->nLps);
|
|
anim->lpheader->nRecords = B_LITTLE32(anim->lpheader->nRecords);
|
|
anim->lpheader->maxRecsPerLp = B_LITTLE16(anim->lpheader->maxRecsPerLp);
|
|
anim->lpheader->lpfTableOffset = B_LITTLE16(anim->lpheader->lpfTableOffset);
|
|
anim->lpheader->contentType = B_LITTLE32(anim->lpheader->contentType);
|
|
anim->lpheader->width = B_LITTLE16(anim->lpheader->width);
|
|
anim->lpheader->height = B_LITTLE16(anim->lpheader->height);
|
|
anim->lpheader->nFrames = B_LITTLE32(anim->lpheader->nFrames);
|
|
anim->lpheader->framesPerSecond = B_LITTLE16(anim->lpheader->framesPerSecond);
|
|
|
|
buffer += sizeof(lpfileheader)+128;
|
|
|
|
// load the color palette
|
|
for (i = 0; i < 768; i += 3)
|
|
{
|
|
anim->pal[i+2] = (*buffer++)>>2;
|
|
anim->pal[i+1] = (*buffer++)>>2;
|
|
anim->pal[i] = (*buffer++)>>2;
|
|
buffer++;
|
|
}
|
|
|
|
// set up large page descriptors
|
|
anim->LpArray = (lp_descriptor *)buffer;
|
|
|
|
// theoretically we should be able to play files with more than 256 frames now
|
|
// assuming the utilities to create them can make them that way
|
|
for (i = anim->lpheader->nLps-1; i != 0; i--)
|
|
{
|
|
anim->LpArray[i].baseRecord = B_LITTLE16(anim->LpArray[i].baseRecord);
|
|
anim->LpArray[i].nRecords = B_LITTLE16(anim->LpArray[i].nRecords);
|
|
anim->LpArray[i].nBytes = B_LITTLE16(anim->LpArray[i].nBytes);
|
|
}
|
|
}
|
|
|
|
|
|
void ANIM_FreeAnim(void)
|
|
{
|
|
if (anim != NULL)
|
|
{
|
|
Bfree(anim);
|
|
anim = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
int32_t ANIM_NumFrames(void)
|
|
{
|
|
return anim->lpheader->nRecords;
|
|
}
|
|
|
|
|
|
uint8_t * ANIM_DrawFrame(int32_t framenumber)
|
|
{
|
|
int32_t cnt = anim->currentframe;
|
|
|
|
// handle first play and looping or rewinding
|
|
if (cnt < 0 || cnt > framenumber)
|
|
cnt = 0;
|
|
|
|
do drawframe(cnt++);
|
|
while (cnt < framenumber);
|
|
|
|
anim->currentframe = framenumber;
|
|
return anim->imagebuffer;
|
|
}
|
|
|
|
|
|
uint8_t * ANIM_GetPalette(void)
|
|
{
|
|
return anim->pal;
|
|
}
|