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Update DUMB to revision d78c28566689e3fca51f1fbb7208cde8b6e190a6 

- Fixed STM sample reading



SVN r4083 (trunk)
This commit is contained in:
Randy Heit 2013-02-08 00:32:14 +00:00
parent 865a237b2c
commit 277c233f5d
1 changed files with 55 additions and 15 deletions
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70
dumb/src/it/readstm.c
View File

@ -28,14 +28,16 @@
#define strnicmp strncasecmp #define strnicmp strncasecmp
#endif #endif
static int it_stm_read_sample_header( IT_SAMPLE *sample, DUMBFILE *f ) static int it_stm_read_sample_header( IT_SAMPLE *sample, DUMBFILE *f, unsigned short *offset )
{ {
dumbfile_getnc( sample->filename, 12, f ); dumbfile_getnc( sample->filename, 12, f );
sample->filename[12] = 0; sample->filename[12] = 0;
memcpy( sample->name, sample->filename, 13 ); memcpy( sample->name, sample->filename, 13 );
dumbfile_skip( f, 2 + 2 ); dumbfile_skip( f, 2 );
*offset = dumbfile_igetw( f );
sample->length = dumbfile_igetw( f ); sample->length = dumbfile_igetw( f );
sample->loop_start = dumbfile_igetw( f ); sample->loop_start = dumbfile_igetw( f );
@ -78,24 +80,15 @@ static int it_stm_read_sample_header( IT_SAMPLE *sample, DUMBFILE *f )
return dumbfile_error(f); return dumbfile_error(f);
} }
static int it_stm_read_sample_data( IT_SAMPLE *sample, DUMBFILE *f ) static int it_stm_read_sample_data( IT_SAMPLE *sample, void *data_block, long offset )
{ {
int32 n;
if ( ! sample->length ) return 0; if ( ! sample->length ) return 0;
n = dumbfile_pos( f );
if ( n & 15 ) {
if ( dumbfile_skip( f, 16 - ( n & 15 ) ) )
return -1;
}
sample->data = malloc( sample->length ); sample->data = malloc( sample->length );
if (!sample->data) if (!sample->data)
return -1; return -1;
if ( dumbfile_getnc( sample->data, sample->length, f ) != sample->length ) memcpy( sample->data, (unsigned char*)data_block + offset, sample->length );
return -1;
return 0; return 0;
} }
@ -198,8 +191,14 @@ static DUMB_IT_SIGDATA *it_stm_load_sigdata(DUMBFILE *f, int * version)
char tracker_name[ 8 ]; char tracker_name[ 8 ];
unsigned short sample_offset[ 31 ];
void *data_block;
int n; int n;
long o, p, q;
sigdata = malloc(sizeof(*sigdata)); sigdata = malloc(sizeof(*sigdata));
if (!sigdata) return NULL; if (!sigdata) return NULL;
@ -286,7 +285,7 @@ static DUMB_IT_SIGDATA *it_stm_load_sigdata(DUMBFILE *f, int * version)
sigdata->channel_pan[ 3 ] = 16; sigdata->channel_pan[ 3 ] = 16;
for ( n = 0; n < sigdata->n_samples; ++n ) { for ( n = 0; n < sigdata->n_samples; ++n ) {
if ( it_stm_read_sample_header( &sigdata->sample[ n ], f ) ) { if ( it_stm_read_sample_header( &sigdata->sample[ n ], f, &sample_offset[ n ] ) ) {
_dumb_it_unload_sigdata( sigdata ); _dumb_it_unload_sigdata( sigdata );
return NULL; return NULL;
} }
@ -332,13 +331,54 @@ static DUMB_IT_SIGDATA *it_stm_load_sigdata(DUMBFILE *f, int * version)
free( buffer ); free( buffer );
} }
o = LONG_MAX;
p = 0;
for ( n = 0; n < sigdata->n_samples; ++n ) { for ( n = 0; n < sigdata->n_samples; ++n ) {
if ( it_stm_read_sample_data( &sigdata->sample[ n ], f ) ) { if ((sigdata->sample[ n ].flags & IT_SAMPLE_EXISTS) && sample_offset[ n ]) {
q = ((long)sample_offset[ n ]) * 16;
if (q < o) {
o = q;
}
if (q + sigdata->sample[ n ].length > p) {
p = q + sigdata->sample[ n ].length;
}
}
else {
sigdata->sample[ n ].flags = 0;
sigdata->sample[ n ].length = 0;
}
}
data_block = malloc( p - o );
if ( !data_block ) {
_dumb_it_unload_sigdata( sigdata );
return NULL;
}
for ( n = 0, q = o / 16; n < sigdata->n_samples; ++n ) {
if ( sample_offset[ n ] ) {
sample_offset[ n ] -= q;
}
}
dumbfile_skip( f, o - dumbfile_pos( f ) );
if ( dumbfile_getnc( (char*)data_block, p - o, f ) != p - o ) {
free( data_block );
_dumb_it_unload_sigdata( sigdata );
return NULL;
}
for ( n = 0; n < sigdata->n_samples; ++n ) {
if ( it_stm_read_sample_data( &sigdata->sample[ n ], data_block, ((long)sample_offset[ n ]) * 16 ) ) {
free( data_block );
_dumb_it_unload_sigdata( sigdata ); _dumb_it_unload_sigdata( sigdata );
return NULL; return NULL;
} }
} }
free( data_block );
_dumb_it_fix_invalid_orders(sigdata); _dumb_it_fix_invalid_orders(sigdata);
return sigdata; return sigdata;