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fteqw/engine/qclib/qcd_main.c
Spoike cfd20f4f06 Update prediction code to propagate some values properly with certain protocol combinations that I'd overlooked. 
Try to fix problems caused by (auto)save's screenshots
Added code to allow falling back on stbi for when libpng/libjpeg are not compiled it, at eukara's request.
Handle .exr image files as suggested by eukara, when the appropriate library is available.
Fix mipmaps etc for half-float files.
Enable support for stbi's special gif loader, loading gifs as an 2darray texture.
Add code for threading the qcvm's tempstring recycling, disabled due to paranoia but does otherwise help xonotic perf (at the cost of extra ram).



git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5548 fc73d0e0-1445-4013-8a0c-d673dee63da5
2019-09-25 20:23:24 +00:00

351 lines
7.7 KiB
C
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#include "progsint.h"
#include "qcc.h"
#if !defined(FTE_TARGET_WEB) && !defined(NACL) && !defined(_XBOX)
#ifndef AVAIL_ZLIB
#define AVAIL_ZLIB
#endif
#endif
#ifdef NO_ZLIB
#undef AVAIL_ZLIB
#endif
#ifdef AVAIL_ZLIB
#ifdef _WIN32
#define ZEXPORT VARGS
#include <zlib.h>
#ifdef _WIN64
//# pragma comment (lib, "../libs/zlib64.lib")
#else
//# pragma comment (lib, "../libs/zlib.lib")
#endif
#else
#include <zlib.h>
#endif
#endif
pbool QC_decodeMethodSupported(int method)
{
if (method == 0)
return true;
if (method == 1)
return true;
if (method == 2)
{
#ifdef AVAIL_ZLIB
return false;
#endif
}
return false;
}
char *QC_decode(progfuncs_t *progfuncs, int complen, int len, int method, const void *info, char *buffer)
{
int i;
if (method == 0) //copy
{
if (complen != len) externs->Sys_Error("lengths do not match");
memcpy(buffer, info, len);
}
else if (method == 1) //xor encryption
{
if (complen != len) externs->Sys_Error("lengths do not match");
for (i = 0; i < len; i++)
buffer[i] = ((const char*)info)[i] ^ 0xA5;
}
#ifdef AVAIL_ZLIB
else if (method == 2 || method == 8) //compression (ZLIB)
{
z_stream strm = {
(char*)info,
complen,
0,
buffer,
len,
0,
NULL,
NULL,
NULL,
NULL,
NULL,
Z_BINARY,
0,
0
};
if (method == 8)
inflateInit2(&strm, -MAX_WBITS);
else
inflateInit(&strm);
if (Z_STREAM_END != inflate(&strm, Z_FINISH)) //decompress it in one go.
externs->Sys_Error("Failed block decompression\n");
inflateEnd(&strm);
}
#endif
//add your decryption/decompression routine here.
else
externs->Sys_Error("Bad file encryption routine\n");
return buffer;
}
#if !defined(MINIMAL) && !defined(OMIT_QCC)
int QC_encodecrc(int len, char *in)
{
#ifdef AVAIL_ZLIB
return crc32(0, in, len);
#else
return 0;
#endif
}
void SafeWrite(int hand, const void *buf, long count);
int SafeSeek(int hand, int ofs, int mode);
//we are allowed to trash our input here.
int QC_encode(progfuncs_t *progfuncs, int len, int method, const char *in, int handle)
{
if (method == 0) //copy, allows a lame pass-through.
{
SafeWrite(handle, in, len);
return len;
}
/*else if (method == 1) //xor encryption, not secure. maybe useful for the string table.
{
for (i = 0; i < len; i++)
in[i] = in[i] ^ 0xA5;
SafeWrite(handle, in, len);
return len;
}*/
else if (method == 2 || method == 8) //compression (ZLIB)
{
#ifdef AVAIL_ZLIB
char out[8192];
int i=0;
z_stream strm = {
(char *)in,
len,
0,
out,
sizeof(out),
0,
NULL,
NULL,
NULL,
NULL,
NULL,
Z_BINARY,
0,
0
};
if (method == 8)
deflateInit2(&strm, 9, Z_DEFLATED, -MAX_WBITS, 9, Z_DEFAULT_STRATEGY); //zip deflate compression
else
deflateInit(&strm, Z_BEST_COMPRESSION); //zlib compression
while(deflate(&strm, Z_FINISH) == Z_OK)
{
SafeWrite(handle, out, sizeof(out) - strm.avail_out); //compress in chunks of 8192. Saves having to allocate a huge-mega-big buffer
i+=sizeof(out) - strm.avail_out;
strm.next_out = out;
strm.avail_out = sizeof(out);
}
SafeWrite(handle, out, sizeof(out) - strm.avail_out);
i+=sizeof(out) - strm.avail_out;
deflateEnd(&strm);
return i;
#endif
externs->Sys_Error("ZLIB compression not supported in this build");
return 0;
}
//add your compression/decryption routine here.
else
{
externs->Sys_Error("Wierd method");
return 0;
}
}
#endif
static int QC_ReadRawInt(const unsigned char *blob)
{
return (blob[0]<<0) | (blob[1]<<8) | (blob[2]<<16) | (blob[3]<<24);
}
static int QC_ReadRawShort(const unsigned char *blob)
{
return (blob[0]<<0) | (blob[1]<<8);
}
int QC_EnumerateFilesFromBlob(const void *blob, size_t blobsize, void (*cb)(const char *name, const void *compdata, size_t compsize, int method, size_t plainsize))
{
unsigned int cdentries;
unsigned int cdlen;
const unsigned char *eocd;
const unsigned char *cd;
int nl,el,cl;
int ret = 0;
if (blobsize < 22)
return ret;
if (!strncmp(blob, "PACK", 4))
{
const packheader_t *head = blob;
const packfile_t *f = (packfile_t*)((char*)blob + head->dirofs);
for (ret = 0; ret < head->dirlen/sizeof(*f); ret++, f++)
{
cb(f->name, (const char*)blob+f->filepos, f->filelen, 0, f->filelen);
}
return ret;
}
//treat it as a zip
eocd = blob;
eocd += blobsize-22;
if (QC_ReadRawInt(eocd+0) != 0x06054b50)
return ret;
if (QC_ReadRawShort(eocd+4) || QC_ReadRawShort(eocd+6) || QC_ReadRawShort(eocd+20) || QC_ReadRawShort(eocd+8) != QC_ReadRawShort(eocd+10))
return ret;
cd = blob;
cd += QC_ReadRawInt(eocd+16);
cdlen = QC_ReadRawInt(eocd+12);
cdentries = QC_ReadRawInt(eocd+10);
if (cd+cdlen>=(const unsigned char*)blob+blobsize)
return ret;
for(; cdentries --> 0; cd += 46 + nl+el+cl)
{
if (QC_ReadRawInt(cd+0) != 0x02014b50)
break;
nl = QC_ReadRawShort(cd+28);
el = QC_ReadRawShort(cd+30);
cl = QC_ReadRawShort(cd+32);
//1=encrypted
//2,4=encoder flags
//8=crc etc info is dodgy
//10=enhanced deflate
//20=patchdata
//40=strong encryption
//80,100,200,400=unused
//800=utf-8
//1000=enh comp
//2000=masked localheader
//4000,8000=reserved
if (QC_ReadRawShort(cd+8) & ~0x80e)
continue;
{
const unsigned char *le = (const unsigned char*)blob + QC_ReadRawInt(cd+42);
unsigned int csize, usize, method;
char name[256];
if (QC_ReadRawInt(le+0) != 0x04034b50)
continue;
if (QC_ReadRawShort(le+6) & ~0x80e) //general purpose flags
continue;
method = QC_ReadRawShort(le+8);
if (method != 0 && method != 8)
continue;
if (nl != QC_ReadRawShort(le+26))
continue; //name is weird...
if (el != QC_ReadRawShort(le+28))
continue; //name is weird...
csize = QC_ReadRawInt(le+18);
usize = QC_ReadRawInt(le+22);
if (!QC_strlcpy(name, cd+46, (nl+1<sizeof(name))?nl+1:sizeof(name)))
continue; //name was too long.
cb(name, le+30+QC_ReadRawShort(le+26)+QC_ReadRawShort(le+28), csize, method, usize);
ret++;
}
}
return ret;
}
char *PDECL filefromprogs(pubprogfuncs_t *ppf, progsnum_t prnum, const char *fname, size_t *size, char *buffer)
{
progfuncs_t *progfuncs = (progfuncs_t*)ppf;
int num;
includeddatafile_t *s;
if (size)
*size = 0;
if (!pr_progstate[prnum].progs)
return NULL;
if (pr_progstate[prnum].progs->version != PROG_EXTENDEDVERSION)
return NULL;
if (pr_progstate[prnum].progs->secondaryversion != PROG_SECONDARYVERSION16 &&
pr_progstate[prnum].progs->secondaryversion != PROG_SECONDARYVERSION32)
return NULL;
num = *(int*)((char *)pr_progstate[prnum].progs + pr_progstate[prnum].progs->ofsfiles);
s = (includeddatafile_t *)((char *)pr_progstate[prnum].progs + pr_progstate[prnum].progs->ofsfiles+4);
while(num>0)
{
if (!strcmp(s->filename, fname))
{
if (size)
*size = s->size;
if (!buffer)
return NULL;
return QC_decode(progfuncs, s->compsize, s->size, s->compmethod, (char *)pr_progstate[prnum].progs+s->ofs, buffer);
}
s++;
num--;
}
if (size)
*size = 0;
return NULL;
}
/*
char *filefromnewprogs(progfuncs_t *progfuncs, const char *prname, const char *fname, int *size, char *buffer)
{
int num;
includeddatafile_t *s;
progstate_t progs;
if (!PR_ReallyLoadProgs(progfuncs, prname, -1, &progs, false))
{
if (size)
*size = 0;
return NULL;
}
if (progs.progs->version < PROG_EXTENDEDVERSION)
return NULL;
if (!progs.progs->ofsfiles)
return NULL;
num = *(int*)((char *)progs.progs + progs.progs->ofsfiles);
s = (includeddatafile_t *)((char *)progs.progs + progs.progs->ofsfiles+4);
while(num>0)
{
if (!strcmp(s->filename, fname))
{
if (size)
*size = s->size;
if (!buffer)
return (char *)0xffffffff;
return QC_decode(progfuncs, s->compsize, s->size, s->compmethod, (char *)progs.progs+s->ofs, buffer);
}
s++;
num--;
}
if (size)
*size = 0;
return NULL;
}
*/
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