mirror of
https://github.com/ScrelliCopter/VGM-Tools
synced 2025-02-21 04:09:25 +11:00
96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/* neoadpcmextract.cpp
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Copyright (C) 2017, 2019 Nicholas Curtis
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <sstream>
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#include <vector>
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#include <cstdint>
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void DecodeSample(FILE* file, std::vector <uint8_t>& a_out)
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{
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// Set up output vector.
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uint32_t sampLen = 0;
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fread(&sampLen, sizeof(uint32_t), 1, file);
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if (sampLen < sizeof(uint64_t))
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return;
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sampLen -= sizeof(uint64_t);
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a_out.clear();
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a_out.resize(sampLen);
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// Ignore 8 bytes.
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uint64_t dummy;
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fread(&dummy, sizeof(uint64_t), 1, file);
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// Read adpcm data.
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fread(a_out.data(), sizeof(uint8_t), sampLen, file);
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}
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void DumpBytes(std::string a_path, const std::vector<uint8_t>& a_bytes)
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{
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std::ofstream fileOut(a_path, std::ios::binary);
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fileOut.write((const char*)a_bytes.data(), a_bytes.size());
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fileOut.close();
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}
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int main(int argc, char** argv)
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{
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if (argc != 2)
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return -1;
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// Open file.
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FILE* file = fopen(argv[1], "rb");
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if (!file)
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return -1;
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// Search for pcm headers.
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std::vector<uint8_t> smpBytes;
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int smpaCount = 0, smpbCount = 0;
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while (!feof(file) && !ferror(file))
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{
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if (fgetc(file) != 0x67 &&
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fgetc(file) != 0x66)
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continue;
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uint8_t byte = fgetc(file);
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if (byte == 0x82)
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{
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std::cout << "ADPCM-A data found at 0x" << std::hex << ftell(file) << std::endl;
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DecodeSample(file, smpBytes);
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std::stringstream path;
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path << std::hex << "smpa_" << (smpaCount++) << ".pcm";
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DumpBytes(path.str(), smpBytes);
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}
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else if (byte == 0x83)
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{
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std::cout << "ADPCM-B data found at 0x" << std::hex << ftell(file) << std::endl;
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DecodeSample(file, smpBytes);
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std::stringstream path;
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path << std::hex << "smpb_" << (smpbCount++) << ".pcm";
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DumpBytes(path.str(), smpBytes);
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}
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}
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fclose(file);
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return 0;
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}
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