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118 lines
3.6 KiB
C++
118 lines
3.6 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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*
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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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*
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* Based on the original sources
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* Faery Tale II -- The Halls of the Dead
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* (c) 1993-1996 The Wyrmkeep Entertainment Co.
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*/
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#ifndef SAGA2_AUDIOCMP_H
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#define SAGA2_AUDIOCMP_H
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namespace Saga2 {
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/* ===================================================================== *
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Tweak values
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* ===================================================================== */
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#define MAXIMAL_COMPRESSION 8
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#define EXPECTED_COMPRESSION 4
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/* ===================================================================== *
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Decompression engine
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* ===================================================================== */
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class soundDecompression {
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public:
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workBuffer *filei; // input 'file' ( buffer )
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workBuffer *workBuf; // input 'file' ( buffer ) copy
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Buffer *fileo; // output 'file' ( buffer )
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Buffer *targBuf; // output 'file' ( buffer ) copy
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soundDecoder *readFrom; // input decoder
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soundSample *sampleAttrib; // audio attributes
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uint32 rVal; // decoder return value
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long **buffer, * *offset;
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long default_offset, lpcqoffset;
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int version, bitshift ;
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int hiloint, hilo ;
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int ftype ;
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int blocksize, nchan;
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int i, chan, nwrap, nskip, ndiscard ;
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int *qlpc, maxnlpc, nmean ;
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int quanterror, nfilename;
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int minsnr;
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int decompState;
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char *magic, *old_magic, *filenamei, *filenameo ;
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char *tmpfilename ;
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char *maxresnstr;
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bool decerr, deceof; // error, eof detect on input buffer
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bool deserr, deseof; // error, eof detect on output buffer
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soundDecompression(void);
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soundDecompression(Buffer *sb, soundDecoder *sd, soundSample *ss, workBuffer *wb);
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void *operator new (size_t s) {
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return audioAlloc(s, "audio decmp data");
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}
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void operator delete (void *m) {
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audioFree(m);
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}
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void reset(void); // initializefor new 'file'
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void setFType(int16 dft); // set the file type
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size_t readb(Buffer *sb, Buffer *tb);
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bool openb(Buffer *sb, Buffer *tb);
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bool beof(void) {
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return deceof;
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}
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bool berr(void) {
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return decerr;
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}
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bool weof(void) {
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return fileo->laden();
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}
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bool werr(void) {
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return deserr;
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}
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};
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/* ===================================================================== *
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File Emulation for buffers
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* ===================================================================== */
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Buffer *buffopen(char n[], char att[]); // emulate fopen
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size_t buffread(void *, size_t, size_t, Buffer *); // emulate fread
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int buffgetc(Buffer *); // emulate fgetc
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char buffputc(char, Buffer *); // emulate fputc
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int16 buffclose(Buffer *); // emulate fclose
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size_t buffwrite(void *, size_t, size_t, Buffer *); // emulate fwrite
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} // end of namespace Saga2
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#endif //DECOMP_H
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