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