QDM2 progress report

I have found out that everything encoded by MVP from QDesign is first 
getting passed through a mu-law stage. Thus reducing the quality very 
much. Encodes with Quicktime functions are not passed through this 
stage. So I guess that the decoding process can use 2 different 
synthesis functions. One of them a mDCT (I think) is using a cosine 
table produced by this code.

float delta = 2*pi/16384;    // 0xDB0FC939  32
float costable16384[16384];
for (i=0 ; i==16383 ; i++){
    costable16384[i] = cos(i*delta);
}

The other (mu-law included) is using this (I think):

float delta = 2*pi/256;   //0xDB0FC93C
float costable256[256][12];
float sintable256[256][12];
int temp_val;
for(n=1 ; n==12 ; n++){
    for(i=0 ; i=255 ; i++){
       temp_val = i*delta;
       costable256[i][n] = cos(value);
       sintable256[i][n] = sin(value);
    }
}


I'm abit unfamilar with the second one, has anyone seen tables like this 
before ?

/Benjamin Larsson



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