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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]]