OrdinaryMagician/vkdoom_m
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move root folder detection out of file_zip.

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added support for Descent Hog and Mvl files., mainly useful for playing Descent's music directly from the asset files.
This commit is contained in:
Christoph Oelckers 2023-12-14 12:30:14 +01:00
commit f8d839d6eb
8 changed files with 2156 additions and 62 deletions
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src/common/filesystem/source/file_mvl.cpp Normal file
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/*
** file_mvl.cpp
**
** reads Descent2 .mvl files
**
**---------------------------------------------------------------------------
** Copyright 2023 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
**
*/
#include "resourcefile.h"
#include "fs_swap.h"
namespace FileSys {
using namespace byteswap;
static bool OpenMvl(FResourceFile* rf, LumpFilterInfo* filter)
{
auto Reader = rf->GetContainerReader();
auto count = Reader->ReadUInt32();
auto Entries = rf->AllocateEntries(count);
size_t pos = 8 + (17 * count); // files start after the directory
for (uint32_t i = 0; i < count; i++)
{
char name[13];
Reader->Read(&name, 13);
name[12] = 0;
uint32_t elength = Reader->ReadUInt32();
Entries[i].Position = pos;
Entries[i].Length = elength;
Entries[i].ResourceID = -1;
Entries[i].FileName = rf->NormalizeFileName(name);
pos += elength;
}
return true;
}
//==========================================================================
//
// File open
//
//==========================================================================
FResourceFile* CheckMvl(const char* filename, FileReader& file, LumpFilterInfo* filter, FileSystemMessageFunc Printf, StringPool* sp)
{
char head[4];
if (file.GetLength() >= 20)
{
file.Seek(0, FileReader::SeekSet);
file.Read(&head, 4);
if (!memcmp(head, "DMVL", 4))
{
auto rf = new FResourceFile(filename, file, sp);
if (OpenMvl(rf, filter)) return rf;
file = rf->Destroy();
}
file.Seek(0, FileReader::SeekSet);
}
return nullptr;
}
}