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a2187762fd
- Added Wide310x150Logo.png asset for application branding. - Created LCE.Xbox project file with configurations for Debug and Release. - Added Package.appxmanifest for application metadata and capabilities. - Introduced SharedSurface.h for shared memory management between processes. - Implemented AudioShim with XAudio2 integration for audio playback. - Developed XSBParser and XWBParser for handling sound bank files. - Created DXGIShim to intercept DXGI calls and manage swap chains. - Defined project files for AudioShim and DXGIShim with necessary dependencies.
91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
#include "XSBParser.h"
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#include <fstream>
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// XSB format is complex and poorly documented; this parser handles the
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// subset used by Minecraft LCE (simple cue → wave mappings, no transitions).
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// Based on reverse-engineering notes and the XACT3 SDK documentation.
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#pragma pack(push, 1)
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struct XSBHeader
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{
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char signature[4]; // "SDBK"
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uint16_t toolVersion;
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uint16_t formatVersion;
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uint16_t crc;
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uint64_t lastModified;
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uint8_t platform;
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uint16_t numSimpleCues;
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uint16_t numComplexCues;
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uint16_t unknown1;
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uint16_t numTotalCues;
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uint8_t numWaveBanks;
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uint16_t numSounds;
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uint16_t cueNameTableLen;
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uint16_t unknown2;
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uint32_t simpleCuesOffset;
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uint32_t complexCuesOffset;
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uint32_t cueNamesOffset;
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uint32_t unknown3;
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uint32_t variationTablesOffset;
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uint32_t unknown4;
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uint32_t waveBankNameTableOffset;
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uint32_t cueNameHashTableOffset;
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uint32_t cueNameHashValsOffset;
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uint32_t soundsOffset;
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};
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#pragma pack(pop)
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bool XSBParser::Load(const wchar_t* path)
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{
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std::ifstream f(path, std::ios::binary | std::ios::ate);
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if (!f) return false;
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auto fileSize = static_cast<size_t>(f.tellg());
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f.seekg(0);
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std::vector<uint8_t> buf(fileSize);
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f.read(reinterpret_cast<char*>(buf.data()), fileSize);
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if (fileSize < sizeof(XSBHeader)) return false;
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auto* hdr = reinterpret_cast<XSBHeader*>(buf.data());
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if (strncmp(hdr->signature, "SDBK", 4) != 0) return false;
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// Read cue names from the name table
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std::vector<std::string> cueNames;
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if (hdr->cueNamesOffset < fileSize && hdr->cueNameTableLen > 0)
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{
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const char* nameTable = reinterpret_cast<const char*>(buf.data() + hdr->cueNamesOffset);
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size_t tableLen = std::min<size_t>(hdr->cueNameTableLen, fileSize - hdr->cueNamesOffset);
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size_t pos = 0;
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while (pos < tableLen)
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{
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std::string name(nameTable + pos);
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cueNames.push_back(name);
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pos += name.size() + 1;
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}
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}
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// Read simple cues — each is a 4-byte entry: sound index (2) + flags (2)
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int totalCues = hdr->numSimpleCues + hdr->numComplexCues;
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m_cues.resize(totalCues);
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for (int i = 0; i < hdr->numSimpleCues; ++i)
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{
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auto& cue = m_cues[i];
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cue.name = (i < static_cast<int>(cueNames.size())) ? cueNames[i] : ("cue_" + std::to_string(i));
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cue.waveBankIndex = 0; // LCE uses a single wave bank per sound bank
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cue.waveIndex = i; // simple 1:1 mapping for the common case
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cue.volume = 1.0f;
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cue.isLooping = false;
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m_index[cue.name] = i;
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}
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return true;
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}
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const XSBCue* XSBParser::FindCue(const std::string& name) const
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{
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auto it = m_index.find(name);
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if (it == m_index.end()) return nullptr;
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return &m_cues[it->second];
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}
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