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Changed adpcm routines to use 2-element state (was 3 element)

This commit is contained in:
Jack Jansen 1993-02-10 13:21:59 +00:00
parent bf80e5407f
commit 55cea47bae
1 changed files with 6 additions and 4 deletions
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10
Modules/audioop.c
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@ -872,9 +872,10 @@ audioop_lin2adpcm(self, args)
valpred = 0;
step = 7;
index = 0;
} else if ( !getargs(state, "(iii)", &valpred, &step, &index) )
} else if ( !getargs(state, "(ii)", &valpred, &index) )
return 0;
step = stepsizeTable[index];
bufferstep = 1;
for ( i=0; i < len; i += size ) {
@ -944,7 +945,7 @@ audioop_lin2adpcm(self, args)
}
bufferstep = !bufferstep;
}
rv = mkvalue("(O(iii))", str, valpred, step, index);
rv = mkvalue("(O(ii))", str, valpred, index);
DECREF(str);
return rv;
}
@ -975,7 +976,7 @@ audioop_adpcm2lin(self, args)
valpred = 0;
step = 7;
index = 0;
} else if ( !getargs(state, "(iii)", &valpred, &step, &index) )
} else if ( !getargs(state, "(ii)", &valpred, &index) )
return 0;
str = newsizedstringobject(NULL, len*size*2);
@ -983,6 +984,7 @@ audioop_adpcm2lin(self, args)
return 0;
ncp = (signed char *)getstringvalue(str);
step = stepsizeTable[index];
bufferstep = 0;
for ( i=0; i < len*size*2; i += size ) {
@ -1035,7 +1037,7 @@ audioop_adpcm2lin(self, args)
else if ( size == 4 ) *LONGP(ncp, i) = (long)(valpred<<16);
}
rv = mkvalue("(O(iii))", str, valpred, step, index);
rv = mkvalue("(O(ii))", str, valpred, index);
DECREF(str);
return rv;
}