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#include "nw4r/snd/snd_WaveArchive.h"
/*******************************************************************************
* headers
*/
#include "common.h" // nullptr
#include "nw4r/snd/snd_Util.h"
#include "nw4r/snd/snd_WaveFile.h"
#include "nw4r/ut/ut_binaryFileFormat.h" // ut::BinaryFileHeader
#include "nw4r/ut/ut_algorithm.h" // ut::AddOffsetToPtr
#include <nw4r/NW4RAssert.hpp>
/*******************************************************************************
* functions
*/
namespace nw4r { namespace snd { namespace detail {
WaveArchiveReader::WaveArchiveReader(void const *waveArc) :
mTableBlock (nullptr),
mDataBlock (nullptr)
{
NW4RAssertPointerNonnull_Line(44, waveArc);
if (!VerifyFileHeader(waveArc))
return;
WaveArchive::FileHeader const *fileHeader =
static_cast<WaveArchive::FileHeader const *>(waveArc);
WaveArchive::TableBlock const *tableBlock =
static_cast<WaveArchive::TableBlock const *>(
ut::AddOffsetToPtr(fileHeader, fileHeader->tableChunkOffset));
NW4RAssert_Line(53, tableBlock->blockHeader.kind
== WaveArchive::SIGNATURE_TABLE_BLOCK);
WaveArchive::DataBlock const *dataBlock =
static_cast<WaveArchive::DataBlock const *>(
ut::AddOffsetToPtr(fileHeader, fileHeader->dataChunkOffset));
NW4RAssert_Line(58, dataBlock->blockHeader.kind
== WaveArchive::SIGNATURE_DATA_BLOCK);
mTableBlock = tableBlock;
mDataBlock = dataBlock;
}
WaveFile::FileHeader const *WaveArchiveReader::GetWaveFile(int index) const
{
if (!mTableBlock)
return nullptr;
if (!mDataBlock)
return nullptr;
if (index < 0)
return nullptr;
if (index >= mTableBlock->fileTable.count)
return nullptr;
Util::DataRef<WaveFile::FileHeader> waveFileRef =
mTableBlock->fileTable.item[index].waveFileRef;
WaveFile::FileHeader const *fileHeader =
Util::GetDataRefAddress0(waveFileRef, mDataBlock);
return fileHeader;
}
bool WaveArchiveReader::VerifyFileHeader(void const *waveArc)
{
ut::BinaryFileHeader const *fileHeader =
static_cast<ut::BinaryFileHeader const *>(waveArc);
NW4RAssertMessage_Line(
92, fileHeader->signature == WaveArchive::SIGNATURE_FILE,
"invalid file signature. wave archive is not available.");
if (fileHeader->signature != WaveArchive::SIGNATURE_FILE)
return false;
// specifically not the source variant
NW4RAssertHeaderClampedLRValue_Line(96, fileHeader->version,
SUPPORTED_FILE_VERSION_MIN,
SUPPORTED_FILE_VERSION_MAX);
if (fileHeader->version < SUPPORTED_FILE_VERSION_MIN)
return false;
if (fileHeader->version > SUPPORTED_FILE_VERSION_MAX)
return false;
return true;
}
}}} // namespace nw4r::snd::detail
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