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-rw-r--r--apps/plugins/mikmod/load_asy.c91
1 files changed, 52 insertions, 39 deletions
diff --git a/apps/plugins/mikmod/load_asy.c b/apps/plugins/mikmod/load_asy.c
index 46e899f6bd..48d746c8e8 100644
--- a/apps/plugins/mikmod/load_asy.c
+++ b/apps/plugins/mikmod/load_asy.c
@@ -6,12 +6,12 @@
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 program 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
@@ -20,15 +20,15 @@
/*==============================================================================
- $Id: load_asy.c,v 1.3 2005/04/07 19:57:38 realtech Exp $
+ $Id$
ASYLUM Music Format v1.0 (.amf) loader
adapted from load_mod.c by Raphael Assenat <raph@raphnet.net>,
with the help of the AMF2MOD utility sourcecode,
written to convert crusader's amf files into 8
channels mod file in 1995 by Mr. P / Powersource
- mrp@fish.share.net, ac054@sfn.saskatoon.sk.ca
-
+ mrp@fish.share.net, ac054@sfn.saskatoon.sk.ca
+
==============================================================================*/
@@ -76,8 +76,9 @@ typedef struct MODNOTE {
/* This table is taken from AMF2MOD.C
* written in 1995 by Mr. P / Powersource
- * mrp@fish.share.net, ac054@sfn.saskatoon.sk.ca */
-UWORD periodtable[]={6848,6464,6096,5760,5424,5120,4832,4560,4304,
+ * mrp@fish.share.net, ac054@sfn.saskatoon.sk.ca */
+static const UWORD periodtable[] = {
+ 6848,6464,6096,5760,5424,5120,4832,4560,4304,
4064,3840,3628,3424,3232,3048,2880,2712,2560,
2416,2280,2152,2032,1920,1814,1712,1616,1524,
1440,1356,1280,1208,1140,1076,1016, 960, 907,
@@ -108,7 +109,7 @@ static int ASY_CheckType(UBYTE *id, UBYTE *numchn, CHAR **descr)
modtype = 1;
return 1;
}
-
+
return 0;
}
@@ -140,14 +141,16 @@ static void ASY_Cleanup(void)
{
MikMod_free(mh);
MikMod_free(patbuf);
+ mh = NULL;
+ patbuf = NULL;
}
-static void ConvertNote(MODNOTE *n)
+static int ConvertNote(MODNOTE *n)
{
UBYTE instrument, effect, effdat, note;
UWORD period;
UBYTE lastnote = 0;
-
+
instrument = n->b&0x1f;
effect = n->c;
effdat = n->d;
@@ -158,10 +161,10 @@ static void ConvertNote(MODNOTE *n)
} else {
period = 0;
}
-
+
/* Convert the period to a note number */
note = 0;
- if (period)
+ if (period)
{
for (note = 0; note < 7 * OCTAVE; note++)
if (period >= npertab[note])
@@ -186,8 +189,8 @@ static void ConvertNote(MODNOTE *n)
UniInstrument(instrument - 1);
/* ...otherwise, only adjust volume... */
else {
- /* ...unless an effect was specified,
- * which forces a new note to be
+ /* ...unless an effect was specified,
+ * which forces a new note to be
* played */
if (effect || effdat) {
UniInstrument(instrument - 1);
@@ -218,7 +221,15 @@ static void ConvertNote(MODNOTE *n)
if ((effect == 0xa) && (effdat & 0xf) && (effdat & 0xf0))
effdat &= 0xf0;
+ if (effect == 0x1b) {
+ return 0; /* UniEffect(UNI_S3MEFFECTQ,dat) ? */
+ }
+ if (effect > 0xf) {
+ return 0; /* return -1 to fail? */
+ }
+
UniPTEffect(effect, effdat);
+ return 0;
}
static UBYTE *ConvertTrack(MODNOTE *n)
@@ -227,7 +238,8 @@ static UBYTE *ConvertTrack(MODNOTE *n)
UniReset();
for (t = 0; t < 64; t++) {
- ConvertNote(n);
+ if (ConvertNote(n) < 0)
+ return NULL;
UniNewline();
n += of.numchn;
}
@@ -237,8 +249,7 @@ static UBYTE *ConvertTrack(MODNOTE *n)
/* Loads all patterns of a modfile and converts them into the 3 byte format. */
static int ML_LoadPatterns(void)
{
- int t, tracks = 0;
- unsigned int s;
+ unsigned int t, s, tracks = 0;
if (!AllocPatterns()) {
return 0;
@@ -246,7 +257,7 @@ static int ML_LoadPatterns(void)
if (!AllocTracks()) {
return 0;
}
-
+
/* Allocate temporary buffer for loading and converting the patterns */
if (!(patbuf = (MODNOTE *)MikMod_calloc(64U * of.numchn, sizeof(MODNOTE))))
return 0;
@@ -278,31 +289,31 @@ static int ASY_Load(int curious)
MSAMPINFO *s;
CHAR *descr=asylum;
ULONG seekpos;
- (void)curious;
+ (void)curious;
- // no title in asylum amf files :(
- strcpy(mh->songname, "");
+ /* no title in asylum amf files :( */
+ mh->songname[0] = '\0';
_mm_fseek(modreader, 0x23, SEEK_SET);
mh->num_patterns = _mm_read_UBYTE(modreader);
mh->num_orders = _mm_read_UBYTE(modreader);
-
- // skip unknown byte
- (void)_mm_read_UBYTE(modreader);
+
+ /* skip unknown byte */
+ _mm_skip_BYTE(modreader);
_mm_read_UBYTES(mh->positions, 256, modreader);
-
+
/* read samples headers*/
for (t = 0; t < 64; t++) {
s = &mh->samples[t];
-
+
_mm_fseek(modreader, 0x126 + (t*37), SEEK_SET);
-
+
_mm_read_string(s->samplename, 22, modreader);
s->samplename[21] = 0; /* just in case */
-
+
s->finetune = _mm_read_UBYTE(modreader);
s->volume = _mm_read_UBYTE(modreader);
- (void)_mm_read_UBYTE(modreader); // skip unknown byte
+ _mm_skip_BYTE(modreader);/* skip unknown byte */
s->length = _mm_read_I_ULONG(modreader);
s->reppos = _mm_read_I_ULONG(modreader);
s->replen = _mm_read_I_ULONG(modreader);
@@ -324,12 +335,16 @@ static int ASY_Load(int curious)
of.numpat = mh->num_patterns;
of.numtrk = of.numpat * of.numchn;
-
/* Copy positions (orders) */
if (!AllocPositions(of.numpos))
return 0;
for (t = 0; t < of.numpos; t++) {
of.positions[t] = mh->positions[t];
+ if (of.positions[t]>of.numpat) { /* SANITIY CHECK */
+ /* fprintf(stderr,"positions[%d]=%d > numpat=%d\n",t,of.positions[t],of.numpat);*/
+ _mm_errno = MMERR_LOADING_HEADER;
+ return 0;
+ }
}
/* Finally, init the sampleinfo structures */
@@ -343,7 +358,7 @@ static int ASY_Load(int curious)
for (t = 0; t < of.numins; t++) {
/* convert the samplename */
q->samplename = DupStr(s->samplename, 23, 1);
-
+
/* init the sampleinfo variables */
q->speed = finetune[s->finetune & 0xf];
q->volume = s->volume & 0x7f;
@@ -351,16 +366,16 @@ static int ASY_Load(int curious)
q->loopstart = (ULONG)s->reppos;
q->loopend = (ULONG)q->loopstart + (s->replen);
q->length = (ULONG)s->length;
-
+
q->flags = SF_SIGNED;
-
+
q->seekpos = seekpos;
seekpos += q->length;
-
+
if ((s->replen) > 2) {
q->flags |= SF_LOOP;
}
-
+
/* fix replen if repend > length */
if (q->loopend > q->length)
q->loopend = q->length;
@@ -369,7 +384,7 @@ static int ASY_Load(int curious)
q++;
}
- of.modtype = StrDup(descr);
+ of.modtype = MikMod_strdup(descr);
if (!ML_LoadPatterns())
return 0;
@@ -379,9 +394,7 @@ static int ASY_Load(int curious)
static CHAR *ASY_LoadTitle(void)
{
- CHAR *s = ""; // no titles
-
- return (DupStr(s, 21, 1));
+ return MikMod_strdup("");
}
/*========== Loader information */
generated by cgit v1.2.1 (git 2.18.0) at 2020-10-25 05:52:58 +0000