float sqrt_tab[30];
GetBitContext gb;
VLC huffman_vlc[4][4];
- float flcf1, flcf2;
int decoder_reset;
float one_div_log2;
q->last_fft_im[i] = 0;
}
- q->flcf1 = log2(10) * 0.05703125;
- q->flcf2 = log2(10) * 0.25;
/* Generate a square root table */
float tmp, tmp2;
//maybe some frequency division thingy
- flcoeffs1[0] = 20000.0 / pow (2, levlCoeffBuf[0] * q->flcf1);
- flcoeffs2[0] = log2(flcoeffs1[0]);
+ flcoeffs1[0] = 20000.0 / pow (2, levlCoeffBuf[0] * 0.18945); // 0.18945 = log2(10) * 0.05703125
+ flcoeffs2[0] = log(flcoeffs1[0])/log(2);
tmp = flcoeffs1[0];
tmp2 = flcoeffs2[0];
level -=16;
tmp *= imc_exp_tab[15 + level];
- tmp2 += q->flcf2 * level;
+ tmp2 += 0.83048 * level; // 0.83048 = log2(10) * 0.25
flcoeffs1[i] = tmp;
flcoeffs2[i] = tmp2;
}
flcoeffs1[i] = 0;
if(levlCoeffBuf[i] < 16) {
flcoeffs1[i] = imc_exp_tab2[levlCoeffBuf[i]] * old_floor[i];
- flcoeffs2[i] = (levlCoeffBuf[i]-7) * q->flcf2 + flcoeffs2[i];
+ flcoeffs2[i] = (levlCoeffBuf[i]-7) * 0.83048 + flcoeffs2[i]; // 0.83048 = log2(10) * 0.25
} else {
flcoeffs1[i] = old_floor[i];
}
highest = FFMAX(highest, q->flcoeffs1[i]);
for(i = 0; i < BANDS-1; i++) {
- q->flcoeffs4[i] = q->flcoeffs3[i] - log2(q->flcoeffs5[i]);
+ q->flcoeffs4[i] = q->flcoeffs3[i] - log(q->flcoeffs5[i])/log(2);
}
q->flcoeffs4[BANDS - 1] = limit;
iacc = 0;
for(j = (stream_format_code & 0x2)?4:0; j < BANDS; j++) {
- cwlen = clip((int)((q->flcoeffs4[j] * 0.5) - summa + 0.5), 0, 6);
+ cwlen = av_clip((int)((q->flcoeffs4[j] * 0.5) - summa + 0.5), 0, 6);
q->bitsBandT[j] = cwlen;
summer += q->bandWidthT[j] * cwlen;
}
}
-void imc_imdct256(IMCContext *q) {
+static void imc_imdct256(IMCContext *q) {
int i;
float re, im;