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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001-2004 The ScummVM project
*
* This program 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.
*
* $Header$
*/
#include "stdafx.h"
#include "common/scummsys.h"
#include "scumm/scumm.h"
#include "scumm/imuse_digi/dimuse_bndmgr.h"
namespace Scumm {
BundleMgr::BundleMgr() {
_compTable = NULL;
_bundleTable = NULL;
_numFiles = 0;
_curSample = -1;
}
BundleMgr::~BundleMgr() {
free(_bundleTable);
free(_compTable);
}
bool BundleMgr::openFile(const char *filename, const char *directory) {
int32 tag, offset;
if (_file.isOpen())
return true;
if (_file.open(filename, directory) == false) {
warning("BundleMgr::openFile() Can't open bundle file: %s", filename);
return false;
}
/*
TODO / FIXME
This is another spot were lots and lots of time is wasted, because the same data is read over
and over again from the disk. Disk I/O is *slooow*.
This function by itself actually isn't what is really slow - normally we would call
it once and then be done with it.
However, for whatever strange reasons, the higher level code constantly keeps creating
new BundleMgr, uses them to open a file, play a piece of sound, then delete the BundleMgr.
Repeat ad infinitum -> extremly slow.
*/
tag = _file.readUint32BE();
offset = _file.readUint32BE();
_numFiles = _file.readUint32BE();
_bundleTable = (AudioTable *) malloc(_numFiles * sizeof(AudioTable));
_file.seek(offset, SEEK_SET);
for (int32 i = 0; i < _numFiles; i++) {
char name[13], c;
int32 z = 0;
int32 z2;
for (z2 = 0; z2 < 8; z2++)
if ((c = _file.readByte()) != 0)
name[z++] = c;
name[z++] = '.';
for (z2 = 0; z2 < 4; z2++)
if ((c = _file.readByte()) != 0)
name[z++] = c;
name[z] = '\0';
strcpy(_bundleTable[i].filename, name);
_bundleTable[i].offset = _file.readUint32BE();
_bundleTable[i].size = _file.readUint32BE();
}
return true;
}
void BundleMgr::closeFile() {
if (_file.isOpen()) {
_file.close();
free(_bundleTable);
_bundleTable = NULL;
}
}
int32 BundleMgr::decompressSampleByCurIndex(int32 offset, int32 size, byte **comp_final, int header_size) {
return decompressSampleByIndex(_curSample, offset, size, comp_final, header_size);
}
int32 BundleMgr::decompressSampleByIndex(int32 index, int32 offset, int32 size, byte **comp_final, int header_size) {
int32 i, tag, num, final_size, output_size;
byte *comp_input, *comp_output;
if (index != -1)
_curSample = index;
if (_file.isOpen() == false) {
warning("BundleMgr::decompressSampleByIndex() File is not open!");
return 0;
}
/*
FIXME / TODO
This function is a major speed hog. It re-reads the same data over and over and over again.
Disk I/O is about the slowest thing on any modern computer. We used to cache all this data,
with good reason... this will have to be done again.
*/
_file.seek(_bundleTable[index].offset, SEEK_SET);
tag = _file.readUint32BE();
num = _file.readUint32BE();
_file.readUint32BE();
_file.readUint32BE();
if (tag != MKID_BE('COMP')) {
warning("BundleMgr::decompressSampleByIndex() Compressed sound %d invalid (%s)", index, tag2str(tag));
return 0;
}
free(_compTable);
_compTable = (CompTable *)malloc(sizeof(CompTable) * num);
for (i = 0; i < num; i++) {
_compTable[i].offset = _file.readUint32BE();
_compTable[i].size = _file.readUint32BE();
_compTable[i].codec = _file.readUint32BE();
_file.readUint32BE();
}
int first_block = (offset + header_size) / 0x2000;
int last_block = (offset + size + header_size - 1) / 0x2000;
comp_output = (byte *)malloc(0x2000);
*comp_final = (byte *)malloc(0x2000 * (1 + last_block - first_block));
final_size = 0;
int skip = offset - (first_block * 0x2000) + header_size;
for (i = first_block; i <= last_block; i++) {
assert(size);
// CMI hack: one more zero byte at the end of input buffer
comp_input = (byte *)malloc(_compTable[i].size + 1);
comp_input[_compTable[i].size] = 0;
_file.seek(_bundleTable[index].offset + _compTable[i].offset, SEEK_SET);
_file.read(comp_input, _compTable[i].size);
output_size = BundleCodecs::decompressCodec(_compTable[i].codec, comp_input, comp_output, _compTable[i].size);
assert(output_size <= 0x2000);
if ((header_size != 0) && (skip > header_size))
output_size -= skip;
if (output_size > size)
output_size = size;
memcpy(*comp_final + final_size, comp_output + skip, output_size);
final_size += output_size;
size -= output_size;
if (skip > 0)
skip = 0;
free(comp_input);
}
free(comp_output);
return final_size;
}
int32 BundleMgr::decompressSampleByName(const char *name, int32 offset, int32 size, byte **comp_final) {
int32 final_size = 0, i;
if (_file.isOpen() == false) {
warning("BundleMgr::decompressSampleByName() File is not open!");
return 0;
}
for (i = 0; i < _numFiles; i++) {
if (!scumm_stricmp(name, _bundleTable[i].filename)) {
final_size = decompressSampleByIndex(i, offset, size, comp_final, 0);
return final_size;
}
}
debug(2, "BundleMgr::decompressSampleByName() Failed finding voice %s", name);
return final_size;
}
} // End of namespace Scumm
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