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/*
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* Decompiled with CFR 0.152.
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*/
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package de.maxhenkel.voicechat.concentus;
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import de.maxhenkel.voicechat.concentus.BoxedValueInt;
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import de.maxhenkel.voicechat.concentus.CeltMode;
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import de.maxhenkel.voicechat.concentus.EntropyCoder;
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import de.maxhenkel.voicechat.concentus.Inlines;
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class Rate {
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private static final byte[] LOG2_FRAC_TABLE = new byte[]{0, 8, 13, 16, 19, 21, 23, 24, 26, 27, 28, 29, 30, 31, 32, 32, 33, 34, 34, 35, 36, 36, 37, 37};
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private static final int ALLOC_STEPS = 6;
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Rate() {
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}
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static int get_pulses(int i) {
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return i < 8 ? i : 8 + (i & 7) << (i >> 3) - 1;
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}
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static int bits2pulses(CeltMode m, int band, int LM, int bits) {
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short[] cache = m.cache.bits;
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short cache_ptr = m.cache.index[++LM * m.nbEBands + band];
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int lo = 0;
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int hi = cache[cache_ptr];
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--bits;
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for (int i = 0; i < 6; ++i) {
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int mid = lo + hi + 1 >> 1;
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if (cache[cache_ptr + mid] >= bits) {
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hi = mid;
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continue;
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}
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lo = mid;
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}
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if (bits - (lo == 0 ? -1 : cache[cache_ptr + lo]) <= cache[cache_ptr + hi] - bits) {
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return lo;
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}
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return hi;
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}
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static int pulses2bits(CeltMode m, int band, int LM, int pulses) {
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return pulses == 0 ? 0 : m.cache.bits[m.cache.index[++LM * m.nbEBands + band] + pulses] + 1;
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}
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static int interp_bits2pulses(CeltMode m, int start, int end, int skip_start, int[] bits1, int[] bits2, int[] thresh, int[] cap, int total, BoxedValueInt _balance, int skip_rsv, BoxedValueInt intensity, int intensity_rsv, BoxedValueInt dual_stereo, int dual_stereo_rsv, int[] bits, int[] ebits, int[] fine_priority, int C, int LM, EntropyCoder ec, int encode, int prev, int signalBandwidth) {
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int percoeff;
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int left;
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int tmp;
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int j;
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boolean done;
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int psum;
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int codedBands = -1;
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int alloc_floor = C << 3;
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int stereo = C > 1 ? 1 : 0;
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int logM = LM << 3;
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int lo = 0;
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int hi = 64;
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for (int i = 0; i < 6; ++i) {
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int mid = lo + hi >> 1;
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psum = 0;
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done = false;
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j = end;
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while (j-- > start) {
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int tmp2 = bits1[j] + (mid * bits2[j] >> 6);
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if (tmp2 >= thresh[j] || done) {
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done = true;
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psum += Inlines.IMIN(tmp2, cap[j]);
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continue;
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}
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if (tmp2 < alloc_floor) continue;
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psum += alloc_floor;
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}
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if (psum > total) {
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hi = mid;
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continue;
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}
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lo = mid;
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}
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psum = 0;
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done = false;
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j = end;
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while (j-- > start) {
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tmp = bits1[j] + (lo * bits2[j] >> 6);
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if (tmp < thresh[j] && !done) {
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tmp = tmp >= alloc_floor ? alloc_floor : 0;
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} else {
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done = true;
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}
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bits[j] = tmp = Inlines.IMIN(tmp, cap[j]);
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psum += tmp;
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}
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codedBands = end;
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while (true) {
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int rem;
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int band_width;
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if ((j = codedBands - 1) <= skip_start) {
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total += skip_rsv;
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break;
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}
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left = total - psum;
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percoeff = Inlines.celt_udiv(left, m.eBands[codedBands] - m.eBands[start]);
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int band_bits = bits[j] + percoeff * (band_width = m.eBands[codedBands] - m.eBands[j]) + (rem = Inlines.IMAX((left -= (m.eBands[codedBands] - m.eBands[start]) * percoeff) - (m.eBands[j] - m.eBands[start]), 0));
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if (band_bits >= Inlines.IMAX(thresh[j], alloc_floor + 8)) {
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if (encode != 0) {
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if (codedBands <= start + 2 || band_bits > (j < prev ? 7 : 9) * band_width << LM << 3 >> 4 && j <= signalBandwidth) {
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ec.enc_bit_logp(1, 1);
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break;
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}
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ec.enc_bit_logp(0, 1);
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} else if (ec.dec_bit_logp(1L) != 0) break;
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psum += 8;
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band_bits -= 8;
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}
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psum -= bits[j] + intensity_rsv;
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if (intensity_rsv > 0) {
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intensity_rsv = LOG2_FRAC_TABLE[j - start];
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}
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psum += intensity_rsv;
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if (band_bits >= alloc_floor) {
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psum += alloc_floor;
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bits[j] = alloc_floor;
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} else {
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bits[j] = 0;
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}
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--codedBands;
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}
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Inlines.OpusAssert(codedBands > start);
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if (intensity_rsv > 0) {
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if (encode != 0) {
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intensity.Val = Inlines.IMIN(intensity.Val, codedBands);
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ec.enc_uint(intensity.Val - start, codedBands + 1 - start);
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} else {
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intensity.Val = start + (int)ec.dec_uint(codedBands + 1 - start);
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}
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} else {
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intensity.Val = 0;
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}
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if (intensity.Val <= start) {
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total += dual_stereo_rsv;
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dual_stereo_rsv = 0;
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}
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if (dual_stereo_rsv > 0) {
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if (encode != 0) {
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ec.enc_bit_logp(dual_stereo.Val, 1);
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} else {
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dual_stereo.Val = ec.dec_bit_logp(1L);
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}
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} else {
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dual_stereo.Val = 0;
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}
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left = total - psum;
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percoeff = Inlines.celt_udiv(left, m.eBands[codedBands] - m.eBands[start]);
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left -= (m.eBands[codedBands] - m.eBands[start]) * percoeff;
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for (j = start; j < codedBands; ++j) {
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int n = j;
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bits[n] = bits[n] + percoeff * (m.eBands[j + 1] - m.eBands[j]);
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}
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j = start;
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while (j < codedBands) {
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tmp = Inlines.IMIN(left, m.eBands[j + 1] - m.eBands[j]);
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int n = j++;
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bits[n] = bits[n] + tmp;
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left -= tmp;
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}
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int balance = 0;
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for (j = start; j < codedBands; ++j) {
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int excess;
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Inlines.OpusAssert(bits[j] >= 0);
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int N0 = m.eBands[j + 1] - m.eBands[j];
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int N = N0 << LM;
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int bit = bits[j] + balance;
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if (N > 1) {
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excess = Inlines.MAX32(bit - cap[j], 0);
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bits[j] = bit - excess;
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int den = C * N + (C == 2 && N > 2 && dual_stereo.Val == 0 && j < intensity.Val ? 1 : 0);
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int NClogN = den * (m.logN[j] + logM);
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int offset = (NClogN >> 1) - den * 21;
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if (N == 2) {
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offset += den << 3 >> 2;
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}
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if (bits[j] + offset < den * 2 << 3) {
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offset += NClogN >> 2;
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} else if (bits[j] + offset < den * 3 << 3) {
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offset += NClogN >> 3;
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}
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ebits[j] = Inlines.IMAX(0, bits[j] + offset + (den << 2));
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ebits[j] = Inlines.celt_udiv(ebits[j], den) >> 3;
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if (C * ebits[j] > bits[j] >> 3) {
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ebits[j] = bits[j] >> stereo >> 3;
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}
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ebits[j] = Inlines.IMIN(ebits[j], 8);
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fine_priority[j] = ebits[j] * (den << 3) >= bits[j] + offset ? 1 : 0;
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int n = j;
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bits[n] = bits[n] - (C * ebits[j] << 3);
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} else {
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excess = Inlines.MAX32(0, bit - (C << 3));
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bits[j] = bit - excess;
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ebits[j] = 0;
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fine_priority[j] = 1;
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}
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if (excess > 0) {
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int extra_fine = Inlines.IMIN(excess >> stereo + 3, 8 - ebits[j]);
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int n = j;
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ebits[n] = ebits[n] + extra_fine;
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int extra_bits = extra_fine * C << 3;
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fine_priority[j] = extra_bits >= excess - balance ? 1 : 0;
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excess -= extra_bits;
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}
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balance = excess;
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Inlines.OpusAssert(bits[j] >= 0);
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Inlines.OpusAssert(ebits[j] >= 0);
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}
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_balance.Val = balance;
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while (j < end) {
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ebits[j] = bits[j] >> stereo >> 3;
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Inlines.OpusAssert(C * ebits[j] << 3 == bits[j]);
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bits[j] = 0;
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fine_priority[j] = ebits[j] < 1 ? 1 : 0;
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++j;
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}
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return codedBands;
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}
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static int compute_allocation(CeltMode m, int start, int end, int[] offsets, int[] cap, int alloc_trim, BoxedValueInt intensity, BoxedValueInt dual_stereo, int total, BoxedValueInt balance, int[] pulses, int[] ebits, int[] fine_priority, int C, int LM, EntropyCoder ec, int encode, int prev, int signalBandwidth) {
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int j;
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total = Inlines.IMAX(total, 0);
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int len = m.nbEBands;
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int skip_start = start;
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int skip_rsv = total >= 8 ? 8 : 0;
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total -= skip_rsv;
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int dual_stereo_rsv = 0;
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int intensity_rsv = 0;
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if (C == 2) {
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intensity_rsv = LOG2_FRAC_TABLE[end - start];
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if (intensity_rsv > total) {
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intensity_rsv = 0;
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} else {
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dual_stereo_rsv = (total -= intensity_rsv) >= 8 ? 8 : 0;
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total -= dual_stereo_rsv;
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}
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}
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int[] bits1 = new int[len];
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int[] bits2 = new int[len];
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int[] thresh = new int[len];
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int[] trim_offset = new int[len];
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for (j = start; j < end; ++j) {
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thresh[j] = Inlines.IMAX(C << 3, 3 * (m.eBands[j + 1] - m.eBands[j]) << LM << 3 >> 4);
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trim_offset[j] = C * (m.eBands[j + 1] - m.eBands[j]) * (alloc_trim - 5 - LM) * (end - j - 1) * (1 << LM + 3) >> 6;
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if (m.eBands[j + 1] - m.eBands[j] << LM != 1) continue;
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int n = j;
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trim_offset[n] = trim_offset[n] - (C << 3);
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}
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int lo = 1;
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int hi = m.nbAllocVectors - 1;
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do {
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boolean done = false;
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int psum = 0;
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int mid = lo + hi >> 1;
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j = end;
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while (j-- > start) {
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int N = m.eBands[j + 1] - m.eBands[j];
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int bitsj = C * N * m.allocVectors[mid * len + j] << LM >> 2;
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if (bitsj > 0) {
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bitsj = Inlines.IMAX(0, bitsj + trim_offset[j]);
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}
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if ((bitsj += offsets[j]) >= thresh[j] || done) {
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done = true;
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psum += Inlines.IMIN(bitsj, cap[j]);
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continue;
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}
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if (bitsj < C << 3) continue;
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psum += C << 3;
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}
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if (psum > total) {
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hi = mid - 1;
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continue;
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}
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lo = mid + 1;
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} while (lo <= hi);
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hi = lo--;
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for (j = start; j < end; ++j) {
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int bits2j;
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int N = m.eBands[j + 1] - m.eBands[j];
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int bits1j = C * N * m.allocVectors[lo * len + j] << LM >> 2;
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int n = bits2j = hi >= m.nbAllocVectors ? cap[j] : C * N * m.allocVectors[hi * len + j] << LM >> 2;
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if (bits1j > 0) {
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bits1j = Inlines.IMAX(0, bits1j + trim_offset[j]);
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}
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if (bits2j > 0) {
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bits2j = Inlines.IMAX(0, bits2j + trim_offset[j]);
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}
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if (lo > 0) {
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bits1j += offsets[j];
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}
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bits2j += offsets[j];
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if (offsets[j] > 0) {
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skip_start = j;
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}
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bits2j = Inlines.IMAX(0, bits2j - bits1j);
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bits1[j] = bits1j;
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bits2[j] = bits2j;
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}
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int codedBands = Rate.interp_bits2pulses(m, start, end, skip_start, bits1, bits2, thresh, cap, total, balance, skip_rsv, intensity, intensity_rsv, dual_stereo, dual_stereo_rsv, pulses, ebits, fine_priority, C, LM, ec, encode, prev, signalBandwidth);
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return codedBands;
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}
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}
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