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#include "nw4r/snd/snd_SeqFile.h"
/* Original source:
* kiwi515/ogws
* src/nw4r/snd/snd_SeqFile.cpp
*/
/*******************************************************************************
* headers
*/
#include <cstring>
#include "common.h"
#include "nw4r/snd/snd_Util.h"
#include "nw4r/ut/ut_binaryFileFormat.h"
#include "nw4r/ut/ut_algorithm.h" // ut::AddOffsetToPtr
#include "nw4r/NW4RAssert.hpp"
/*******************************************************************************
* functions
*/
namespace nw4r { namespace snd { namespace detail {
bool SeqFileReader::IsValidFileHeader(void const *seqData)
{
ut::BinaryFileHeader const *fileHeader =
static_cast<ut::BinaryFileHeader const *>(seqData);
NW4RAssertMessage_Line(
43, fileHeader->signature == SeqFile::SIGNATURE_FILE,
"invalid file signature. seq data is not available.");
if (fileHeader->signature != SeqFile::SIGNATURE_FILE)
return false;
u16 version = Util::ReadBigEndian(fileHeader->version);
NW4RAssertMessage_Line(
51, version >= NW4R_FILE_VERSION(1, 0),
"seq file is not supported version.\n"
" please reconvert file using new version tools.\n");
version = Util::ReadBigEndian(fileHeader->version); // ? again?
if (version < NW4R_FILE_VERSION(1, 0))
return false;
NW4RAssertMessage_Line(
59, version <= SUPPORTED_FILE_VERSION,
"seq file is not supported version.\n"
" please reconvert file using new version tools.\n");
if (version > SUPPORTED_FILE_VERSION)
return false;
return true;
}
SeqFileReader::SeqFileReader(void const *seqData) :
mHeader (nullptr),
mDataBlock (nullptr)
{
NW4RAssertPointerNonnull_Line(78, seqData);
if (!IsValidFileHeader(seqData))
return;
mHeader = static_cast<SeqFile::Header const *>(seqData);
mDataBlock = static_cast<SeqFile::DataBlock const *>(ut::AddOffsetToPtr(
mHeader, Util::ReadBigEndian(mHeader->dataBlockOffset)));
NW4RAssert_Line(87, mDataBlock->blockHeader.kind
== SeqFile::SIGNATURE_DATA_BLOCK);
}
void const *SeqFileReader::GetBaseAddress() const
{
NW4RAssertPointerNonnull_Line(101, mHeader);
return ut::AddOffsetToPtr(mDataBlock,
Util::ReadBigEndian(mDataBlock->baseOffset));
}
bool SeqFileReader::ReadOffsetByLabel(char const *labelName,
u32 *offsetPtr) const
{
NW4RAssertPointerNonnull_Line(117, offsetPtr);
// NOTE: reinterpret_cast necessary instead of static_cast for regalloc(???)
SeqFile::LabelBlock const *labelBlock =
reinterpret_cast<SeqFile::LabelBlock const *>(ut::AddOffsetToPtr(
mHeader, Util::ReadBigEndian(mHeader->labelBlockOffset)));
if (!labelBlock)
return false;
u32 labelNameLen = std::strlen(labelName);
for (int index = 0;
index < Util::ReadBigEndian(labelBlock->labelInfoTable.count); ++index)
{
u32 ofs = labelBlock->labelInfoTable.item[index];
// NOTE: reinterpret_cast necessary here too
SeqFile::LabelInfo const *labelInfo =
reinterpret_cast<SeqFile::LabelInfo const *>(
ut::AddOffsetToPtr(labelBlock, Util::ReadBigEndian(ofs) + 8));
NW4RAssertPointerNonnull_Line(133, labelInfo);
if (labelNameLen == Util::ReadBigEndian(labelInfo->nameLen)
&& std::strncmp(labelName, labelInfo->name, labelNameLen) == 0)
{
*offsetPtr = Util::ReadBigEndian(labelInfo->offset);
return true;
}
}
return false;
}
}}} // namespace nw4r::snd::detail
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