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-rw-r--r--ext/gme/tag.c353
1 files changed, 0 insertions, 353 deletions
diff --git a/ext/gme/tag.c b/ext/gme/tag.c
deleted file mode 100644
index 41ce812f..00000000
--- a/ext/gme/tag.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/* Copyright (C) 2007 Brian Koropoff <bkoropoff at gmail com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <glib/gstring.h>
-#include <glib/gtypes.h>
-#include <glib/gmem.h>
-#include <glib/gprintf.h>
-
-#include <tag.h>
-#include <string.h>
-#include <stdlib.h>
-
-
-#define EXTENDED_OFFSET 0x10200
-#define EXTENDED_MAGIC ((guint32) ('x' << 0 | 'i' << 8 | 'd' << 16 | '6' << 24))
-
-#define TYPE_LENGTH 0x0
-#define TYPE_STRING 0x1
-#define TYPE_INTEGER 0x4
-
-#define TAG_TITLE 0x01
-#define TAG_GAME 0x02
-#define TAG_ARTIST 0x03
-#define TAG_DUMPER 0x04
-#define TAG_DUMP_DATE 0x05
-#define TAG_EMULATOR 0x06
-#define TAG_COMMENT 0x07
-#define TAG_ALBUM 0x10
-#define TAG_DISC 0x11
-#define TAG_TRACK 0x12
-#define TAG_PUBLISHER 0x13
-#define TAG_YEAR 0x14
-#define TAG_INTRO 0x30
-#define TAG_LOOP 0x31
-#define TAG_END 0x32
-#define TAG_FADE 0x33
-#define TAG_MUTED 0x34
-#define TAG_COUNT 0x35
-#define TAG_AMP 0x36
-
-#define READ_INT8(data, offset) (data[offset])
-#define READ_INT16(data, offset) ((data[offset] << 0) + (data[offset+1] << 8))
-#define READ_INT24(data, offset) ((data[offset] << 0) + (data[offset+1] << 8) + (data[offset+2] << 16))
-#define READ_INT32(data, offset) ((data[offset] << 0) + (data[offset+1] << 8) + (data[offset+2] << 16) + (data[offset+3] << 24))
-
-static inline gboolean
-spc_tag_is_extended (guchar * data, guint length)
-{
- // Extended tags come at the end of the file (at a known offset)
- // and start with "xid6"
- return (length > EXTENDED_OFFSET + 4
- && READ_INT32 (data, EXTENDED_OFFSET) == EXTENDED_MAGIC);
-}
-
-static inline gboolean
-spc_tag_is_text_format (guchar * data, guint length)
-{
- // Because the id666 format is brain dead, there's
- // no definite way to decide if it is in text
- // format. This function implements a set of
- // heuristics to make a best-effort guess.
-
- // If the date field contains separators, it is probably text
- if (data[0xA0] == '/' || data[0xA0] == '.')
- return TRUE;
- // If the first byte of the date field is small (but not 0,
- // which could indicate an empty string), it's probably binary
- if (data[0x9E] >= 1 && data[0x9E] <= 31)
- return FALSE;
-
- // If all previous tests turned up nothing, assume it's text
- return TRUE;
-}
-
-static inline gboolean
-spc_tag_is_present (guchar * data, guint length)
-{
- return data[0x23] == 26;
-}
-
-static inline GDate *
-spc_tag_unpack_date (guint32 packed)
-{
- guint dump_year = packed / 10000;
- guint dump_month = (packed % 10000) / 100;
- guint dump_day = packed % 100;
-
- if (dump_month == 0)
- dump_month = 1;
- if (dump_day == 0)
- dump_day = 1;
-
- if (dump_year != 0)
- return g_date_new_dmy (dump_day, dump_month, dump_year);
- else
- return NULL;
-}
-
-void
-spc_tag_clear (spc_tag_info * info)
-{
- info->title = info->game = info->publisher = info->artist = info->album =
- info->comment = info->dumper = NULL;
- info->dump_date = NULL;
- info->time_seconds = 0;
- info->time_fade_milliseconds = 0;
- info->time_intro = 0;
- info->time_end = 0;
- info->time_loop = 0;
- info->time_fade = 0;
- info->loop_count = 0;
- info->muted = 0;
- info->disc = 0;
- info->amplification = 0;
-}
-
-void
-spc_tag_get_info (guchar * data, guint length, spc_tag_info * info)
-{
- spc_tag_clear (info);
-
- if (spc_tag_is_present (data, length)) {
- gboolean text_format = spc_tag_is_text_format (data, length);
-
- info->title = g_new0 (gchar, 0x21);
- info->game = g_new0 (gchar, 0x21);
- info->artist = g_new0 (gchar, 0x21);
- info->dumper = g_new0 (gchar, 0x10);
- info->comment = g_new0 (gchar, 0x32);
-
- strncpy (info->title, (gchar *) & data[0x2E], 32);
- strncpy (info->artist, (gchar *) & data[(text_format ? 0xB1 : 0xB0)], 32);
- strncpy (info->game, (gchar *) & data[0x4E], 32);
- strncpy (info->dumper, (gchar *) & data[0x6E], 16);
- strncpy (info->comment, (gchar *) & data[0x7E], 32);
-
- if (text_format) {
- gchar time[4];
- gchar fade[6];
- guint dump_year, dump_month, dump_day;
-
- strncpy (time, (gchar *) data + 0xA9, 3);
- strncpy (fade, (gchar *) data + 0xAC, 5);
-
- time[3] = fade[5] = 0;
-
- info->time_seconds = atoi (time);
- info->time_fade_milliseconds = atoi (fade);
-
- dump_year = (guint) atoi ((gchar *) data + 0x9E);
- dump_month = (guint) atoi ((gchar *) data + 0x9E + 3);
- dump_day = (guint) atoi ((gchar *) data + 0x9E + 3 + 3);
-
- if (dump_month == 0)
- dump_month = 1;
- if (dump_day == 0)
- dump_day = 1;
- if (dump_year != 0)
- info->dump_date = g_date_new_dmy (dump_day, dump_month, dump_year);
-
- info->muted = READ_INT8 (data, 0xD1);
- info->emulator = READ_INT8 (data, 0xD2);
- } else {
- info->time_seconds = READ_INT24 (data, 0xA9);
- info->time_fade_milliseconds = READ_INT32 (data, 0xAC);
- info->dump_date = spc_tag_unpack_date (READ_INT32 (data, 0x9E));
- info->muted = READ_INT8 (data, 0xD0);
- info->emulator = READ_INT8 (data, 0xD1);
- }
- }
-
- if (spc_tag_is_extended (data, length)) {
- guchar *chunk = data + EXTENDED_OFFSET + 8;
- guint32 chunk_size = *((guint32 *) (data + EXTENDED_OFFSET + 4));
-
- guchar *subchunk, *subchunk_next;
-
- for (subchunk = chunk; subchunk < chunk + chunk_size;
- subchunk = subchunk_next) {
- guint8 tag = READ_INT8 (subchunk, 0);
- guint8 type = READ_INT8 (subchunk, 1);
- guint16 length = READ_INT16 (subchunk, 2);
- guchar *value = subchunk + 4;
-
- switch (type) {
- case TYPE_LENGTH:
- {
- switch (tag) {
- case TAG_TRACK:
- info->track = READ_INT8 (subchunk, 2 + 1);
- break;
- case TAG_YEAR:
- info->year = READ_INT16 (subchunk, 2);
- break;
- case TAG_COUNT:
- info->loop_count = READ_INT8 (subchunk, 2);
- break;
- case TAG_EMULATOR:
- info->emulator = READ_INT8 (subchunk, 2);
- break;
- case TAG_DISC:
- info->disc = READ_INT8 (subchunk, 2);
- break;
- case TAG_MUTED:
- info->muted = READ_INT8 (subchunk, 2);
- break;
- default:
- break;
- }
-
- subchunk_next = subchunk + 4;
- break;
- }
- case TYPE_STRING:
- {
- gchar *dest;
-
- if (length <= 1)
- dest = NULL;
- else
- switch (tag) {
- case TAG_TITLE:
- dest = info->title = g_renew (gchar, info->title, length);
- break;
- case TAG_GAME:
- dest = info->game = g_renew (gchar, info->game, length);
- break;
- case TAG_ARTIST:
- dest = info->artist = g_renew (gchar, info->artist, length);
- break;
- case TAG_ALBUM:
- dest = info->album = g_renew (gchar, info->album, length);
- break;
- case TAG_DUMPER:
- dest = info->dumper = g_renew (gchar, info->dumper, length);
- break;
- case TAG_COMMENT:
- dest = info->comment = g_renew (gchar, info->comment, length);
- break;
- case TAG_PUBLISHER:
- dest = info->publisher =
- g_renew (gchar, info->publisher, length);
- break;
- default:
- dest = NULL;
- break;
- }
-
- if (dest)
- strncpy (dest, (gchar *) value, length);
-
- subchunk_next = value + length;
- break;
- }
- case TYPE_INTEGER:
- {
- switch (tag) {
- case TAG_INTRO:
- info->time_intro = READ_INT32 (value, 0);
- break;
- case TAG_END:
- info->time_end = READ_INT32 (value, 0);
- break;
- case TAG_FADE:
- info->time_fade = READ_INT32 (value, 0);
- break;
- case TAG_LOOP:
- info->time_loop = READ_INT32 (value, 0);
- break;
- case TAG_DUMP_DATE:
- info->dump_date = spc_tag_unpack_date (READ_INT32 (value, 0));
- break;
- case TAG_AMP:
- info->amplification = READ_INT32 (value, 0);
- break;
- default:
- break;
- }
- subchunk_next = value + length;
- break;
- }
- default:
- subchunk_next = value + length;
- break;
- }
- }
- }
-
- if (info->title && !*info->title) {
- g_free (info->title);
- info->title = NULL;
- }
- if (info->game && !*info->game) {
- g_free (info->game);
- info->game = NULL;
- }
- if (info->artist && !*info->artist) {
- g_free (info->artist);
- info->artist = NULL;
- }
- if (info->album && !*info->album) {
- g_free (info->album);
- info->album = NULL;
- }
- if (info->publisher && !*info->publisher) {
- g_free (info->publisher);
- info->publisher = NULL;
- }
- if (info->comment && !*info->comment) {
- g_free (info->comment);
- info->comment = NULL;
- }
- if (info->dumper && !*info->dumper) {
- g_free (info->dumper);
- info->dumper = NULL;
- }
-}
-
-void
-spc_tag_free (spc_tag_info * info)
-{
- if (info->title)
- g_free (info->title);
- if (info->game)
- g_free (info->game);
- if (info->artist)
- g_free (info->artist);
- if (info->album)
- g_free (info->album);
- if (info->publisher)
- g_free (info->publisher);
- if (info->comment)
- g_free (info->comment);
- if (info->dumper)
- g_free (info->dumper);
- if (info->dump_date)
- g_date_free (info->dump_date);
-}
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