mirror of
https://github.com/ScrelliCopter/VGM-Tools
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104 lines
2.6 KiB
C
104 lines
2.6 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 <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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typedef struct { uint8_t* data; size_t size; } Buffer;
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int DecodeSample(FILE* fin, const char* name, Buffer* buf)
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{
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// Get sample data length.
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uint32_t sampLen = 0;
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fread(&sampLen, sizeof(uint32_t), 1, fin);
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if (sampLen < sizeof(uint64_t))
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return 1;
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sampLen -= sizeof(uint64_t);
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// Resize buffer if needed.
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if (!buf->data || buf->size < sampLen)
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{
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free(buf->data);
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buf->size = sampLen;
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buf->data = malloc(sampLen);
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if (!buf->data)
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return 1;
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}
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// Ignore 8 bytes.
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uint64_t dummy;
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fread(&dummy, sizeof(uint64_t), 1, fin);
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// Read adpcm data.
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fread(buf->data, sizeof(uint8_t), sampLen, fin);
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// Write adpcm sample.
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FILE* fout = fopen(name, "wb");
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if (!fout)
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return 1;
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fwrite(buf->data, sizeof(uint8_t), sampLen, fout);
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fclose(fout);
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return 0;
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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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Buffer smpBytes = {NULL, 0};
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char namebuf[32];
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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 || 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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printf("ADPCM-A data found at 0x%08lX\n", ftell(file));
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snprintf(namebuf, sizeof(namebuf), "smpa_%x.pcm", smpaCount++);
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if (DecodeSample(file, namebuf, &smpBytes))
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break;
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}
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else if (byte == 0x83)
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{
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printf("ADPCM-B data found at 0x%08lX\n", ftell(file));
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snprintf(namebuf, sizeof(namebuf), "smpb_%x.pcm", smpbCount++);
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if (DecodeSample(file, namebuf, &smpBytes))
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break;
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}
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}
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free(smpBytes.data);
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fclose(file);
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return 0;
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}
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