void ff_mpc_dequantize_and_synth(MPCContext * c, int maxband, void *data, int channels)
{
    int i, j, ch;
    Band *bands = c->bands;
    int off;
    float mul;

    /* dequantize */
    memset(c->sb_samples, 0, sizeof(c->sb_samples));
    off = 0;
    for(i = 0; i <= maxband; i++, off += SAMPLES_PER_BAND){
        for(ch = 0; ch < 2; ch++){
            if(bands[i].res[ch]){
                j = 0;
                mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][0]];
                for(; j < 12; j++)
                    c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off];
                mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][1]];
                for(; j < 24; j++)
                    c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off];
                mul = mpc_CC[bands[i].res[ch]] * mpc_SCF[bands[i].scf_idx[ch][2]];
                for(; j < 36; j++)
                    c->sb_samples[ch][j][i] = mul * c->Q[ch][j + off];
            }
        }
        if(bands[i].msf){
            int t1, t2;
            for(j = 0; j < SAMPLES_PER_BAND; j++){
                t1 = c->sb_samples[0][j][i];
                t2 = c->sb_samples[1][j][i];
                c->sb_samples[0][j][i] = t1 + t2;
                c->sb_samples[1][j][i] = t1 - t2;
            }
        }
    }

    mpc_synth(c, data, channels);
}