Nintendo 3DS Sound: Difference between revisions
King Dodongo (talk | contribs) |
Added a sample implementation of a reader in C |
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== Sample reader == | |||
This is a basic example of how to read a 3DS playlist. I know that this works on my specific system; on any other system, it's liable to fail. I'm not responsible if hurt yourself. | |||
<pre>/* This is free and unencumbered software released into the public domain. | |||
/* Anyone is free to copy, modify, publish, use, compile, sell, or | |||
/* distribute this software, either in source code form or as a compiled | |||
/* binary, for any purpose, commercial or non-commercial, and by any | |||
/* means. | |||
/* In jurisdictions that recognize copyright laws, the author or authors | |||
/* of this software dedicate any and all copyright interest in the | |||
/* software to the public domain. We make this dedication for the benefit | |||
/* of the public at large and to the detriment of our heirs and | |||
/* successors. We intend this dedication to be an overt act of | |||
/* relinquishment in perpetuity of all present and future rights to this | |||
/* software under copyright law. | |||
/* | |||
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |||
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |||
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |||
/* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |||
/* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |||
/* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |||
/* OTHER DEALINGS IN THE SOFTWARE. | |||
/* | |||
/* For more information, please refer to <http://unlicense.org/> */ | |||
#include <stdio.h> | |||
#include <stdint.h> | |||
uint8_t buf[0x26730]; | |||
uint16_t checksum, icon, songCount; | |||
uint32_t timestamp; | |||
uint8_t playlistName[0x100]; | |||
uint8_t songName[0x20C][299]; | |||
void readUtf16AsAscii(uint8_t *input, uint8_t *output, uint16_t length, uint32_t offset) { | |||
uint16_t j=0; | |||
for (j=0; j<length; j++) { | |||
output[j] = input[(j*2)+offset]; | |||
} | |||
} | |||
int main(int argc, char* argv[]) { | |||
uint16_t t=0; | |||
FILE *playlistFile; | |||
if (argc != 2) { | |||
printf("Usage: %s FILE\n", argv[0]); | |||
exit(1); | |||
} | |||
if ((playlistFile = fopen(argv[1], "rb")) == NULL) { | |||
printf("Could not open %s.\n", argv[1]); | |||
exit(1); | |||
} | |||
if (fread(buf, 1, 0x26730, playlistFile) != 0x26730) { | |||
printf("Could not 0x26730 bytes from %s.\n", argv[1]); | |||
exit(1); | |||
} | |||
if (!((buf[0] = 'O') && (buf[1] = 'V') && (buf[2] = 'F') && (buf[3] = 'A'))) { | |||
printf("%s is not a 3DS playlist file.\n", argv[1]); | |||
exit(1); | |||
} | |||
checksum = (buf[0x11] << 8) | buf[0x10]; | |||
icon = (buf[0x13] << 8) | buf[0x12]; | |||
songCount = (buf[0x15] << 8) | buf[0x14]; | |||
timestamp = (buf[0x17] << 24) | (buf[0x16] << 16) | (buf[0x19] << 8) | buf[0x18]; | |||
readUtf16AsAscii(buf, playlistName, 0x100, 0x20); | |||
for (t=0; t<songCount; t++) readUtf16AsAscii(buf, songName[t], 0x20C, (0x120+(t*0x20C))); | |||
printf("Checksum:\t%04X\nIcon ID:\t%04X\nSong Count:\t%04X\nTimestamp:\t%08X\nPlaylist Name:\t\"%s\"\n", | |||
checksum, icon, songCount, timestamp, playlistName); | |||
for (t=0; t<songCount; t++) printf("Name of song %03i: %s\n", t, songName[t]); | |||
} | |||
</pre> | |||
[[Category:File formats]] | [[Category:File formats]] | ||
[[Category:Nintendo Software]] | [[Category:Nintendo Software]] | ||