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source/decompiled/de/maxhenkel/voicechat/concentus/OpusMSEncoder.java

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+/*
+ * Decompiled with CFR 0.152.
+ */
+package de.maxhenkel.voicechat.concentus;
+
+import de.maxhenkel.voicechat.concentus.Arrays;
+import de.maxhenkel.voicechat.concentus.Bands;
+import de.maxhenkel.voicechat.concentus.BoxedValueInt;
+import de.maxhenkel.voicechat.concentus.CeltCommon;
+import de.maxhenkel.voicechat.concentus.CeltMode;
+import de.maxhenkel.voicechat.concentus.ChannelLayout;
+import de.maxhenkel.voicechat.concentus.CodecHelpers;
+import de.maxhenkel.voicechat.concentus.Inlines;
+import de.maxhenkel.voicechat.concentus.MDCT;
+import de.maxhenkel.voicechat.concentus.OpusApplication;
+import de.maxhenkel.voicechat.concentus.OpusBandwidth;
+import de.maxhenkel.voicechat.concentus.OpusEncoder;
+import de.maxhenkel.voicechat.concentus.OpusError;
+import de.maxhenkel.voicechat.concentus.OpusException;
+import de.maxhenkel.voicechat.concentus.OpusFramesize;
+import de.maxhenkel.voicechat.concentus.OpusMode;
+import de.maxhenkel.voicechat.concentus.OpusMultistream;
+import de.maxhenkel.voicechat.concentus.OpusRepacketizer;
+import de.maxhenkel.voicechat.concentus.OpusSignal;
+import de.maxhenkel.voicechat.concentus.QuantizeBands;
+import de.maxhenkel.voicechat.concentus.VorbisLayout;
+
+public class OpusMSEncoder {
+    final ChannelLayout layout = new ChannelLayout();
+    int lfe_stream = 0;
+    OpusApplication application = OpusApplication.OPUS_APPLICATION_AUDIO;
+    OpusFramesize variable_duration = OpusFramesize.OPUS_FRAMESIZE_UNKNOWN;
+    int surround = 0;
+    int bitrate_bps = 0;
+    final float[] subframe_mem = new float[3];
+    OpusEncoder[] encoders = null;
+    int[] window_mem = null;
+    int[] preemph_mem = null;
+    private static final int[] diff_table = new int[]{512, 300, 165, 87, 45, 23, 11, 6, 3, 0, 0, 0, 0, 0, 0, 0, 0};
+    private final int MS_FRAME_TMP = 3832;
+
+    private OpusMSEncoder(int nb_streams, int nb_coupled_streams) {
+        if (nb_streams < 1 || nb_coupled_streams > nb_streams || nb_coupled_streams < 0) {
+            throw new IllegalArgumentException("Invalid channel count in MS encoder");
+        }
+        this.encoders = new OpusEncoder[nb_streams];
+        for (int c = 0; c < nb_streams; ++c) {
+            this.encoders[c] = new OpusEncoder();
+        }
+        int nb_channels = nb_coupled_streams * 2 + (nb_streams - nb_coupled_streams);
+        this.window_mem = new int[nb_channels * 120];
+        this.preemph_mem = new int[nb_channels];
+    }
+
+    public void resetState() {
+        this.subframe_mem[2] = 0.0f;
+        this.subframe_mem[1] = 0.0f;
+        this.subframe_mem[0] = 0.0f;
+        if (this.surround != 0) {
+            Arrays.MemSet(this.preemph_mem, 0, this.layout.nb_channels);
+            Arrays.MemSet(this.window_mem, 0, this.layout.nb_channels * 120);
+        }
+        int encoder_ptr = 0;
+        for (int s = 0; s < this.layout.nb_streams; ++s) {
+            OpusEncoder enc = this.encoders[encoder_ptr++];
+            enc.resetState();
+        }
+    }
+
+    static int validate_encoder_layout(ChannelLayout layout) {
+        for (int s = 0; s < layout.nb_streams; ++s) {
+            if (s < layout.nb_coupled_streams) {
+                if (OpusMultistream.get_left_channel(layout, s, -1) == -1) {
+                    return 0;
+                }
+                if (OpusMultistream.get_right_channel(layout, s, -1) != -1) continue;
+                return 0;
+            }
+            if (OpusMultistream.get_mono_channel(layout, s, -1) != -1) continue;
+            return 0;
+        }
+        return 1;
+    }
+
+    static void channel_pos(int channels, int[] pos) {
+        if (channels == 4) {
+            pos[0] = 1;
+            pos[1] = 3;
+            pos[2] = 1;
+            pos[3] = 3;
+        } else if (channels == 3 || channels == 5 || channels == 6) {
+            pos[0] = 1;
+            pos[1] = 2;
+            pos[2] = 3;
+            pos[3] = 1;
+            pos[4] = 3;
+            pos[5] = 0;
+        } else if (channels == 7) {
+            pos[0] = 1;
+            pos[1] = 2;
+            pos[2] = 3;
+            pos[3] = 1;
+            pos[4] = 3;
+            pos[5] = 2;
+            pos[6] = 0;
+        } else if (channels == 8) {
+            pos[0] = 1;
+            pos[1] = 2;
+            pos[2] = 3;
+            pos[3] = 1;
+            pos[4] = 3;
+            pos[5] = 1;
+            pos[6] = 3;
+            pos[7] = 0;
+        }
+    }
+
+    static int logSum(int a, int b) {
+        int diff;
+        int max;
+        if (a > b) {
+            max = a;
+            diff = Inlines.SUB32(Inlines.EXTEND32(a), Inlines.EXTEND32(b));
+        } else {
+            max = b;
+            diff = Inlines.SUB32(Inlines.EXTEND32(b), Inlines.EXTEND32(a));
+        }
+        if (diff >= 8192) {
+            return max;
+        }
+        int low = Inlines.SHR32(diff, 9);
+        int frac = Inlines.SHL16(diff - Inlines.SHL16(low, 9), 6);
+        return max + diff_table[low] + Inlines.MULT16_16_Q15(frac, Inlines.SUB16(diff_table[low + 1], diff_table[low]));
+    }
+
+    static void surround_analysis(CeltMode celt_mode, short[] pcm, int pcm_ptr, int[] bandLogE, int[] mem, int[] preemph_mem, int len, int overlap, int channels, int rate) {
+        int i;
+        int c;
+        int LM;
+        int[] pos = new int[]{0, 0, 0, 0, 0, 0, 0, 0};
+        int[][] bandE = Arrays.InitTwoDimensionalArrayInt(1, 21);
+        int[][] maskLogE = Arrays.InitTwoDimensionalArrayInt(3, 21);
+        int upsample = CeltCommon.resampling_factor(rate);
+        int frame_size = len * upsample;
+        for (LM = 0; LM < celt_mode.maxLM && celt_mode.shortMdctSize << LM != frame_size; ++LM) {
+        }
+        int[] input = new int[frame_size + overlap];
+        short[] x = new short[len];
+        int[][] freq = Arrays.InitTwoDimensionalArrayInt(1, frame_size);
+        OpusMSEncoder.channel_pos(channels, pos);
+        for (c = 0; c < 3; ++c) {
+            for (i = 0; i < 21; ++i) {
+                maskLogE[c][i] = -28672;
+            }
+        }
+        for (c = 0; c < channels; ++c) {
+            System.arraycopy(mem, c * overlap, input, 0, overlap);
+            OpusMSEncoder.opus_copy_channel_in_short(x, 0, 1, pcm, pcm_ptr, channels, c, len);
+            BoxedValueInt boxed_preemph = new BoxedValueInt(preemph_mem[c]);
+            CeltCommon.celt_preemphasis(x, input, overlap, frame_size, 1, upsample, celt_mode.preemph, boxed_preemph, 0);
+            preemph_mem[c] = boxed_preemph.Val;
+            MDCT.clt_mdct_forward(celt_mode.mdct, input, 0, freq[0], 0, celt_mode.window, overlap, celt_mode.maxLM - LM, 1);
+            if (upsample != 1) {
+                int bound = len;
+                i = 0;
+                while (i < bound) {
+                    int[] nArray = freq[0];
+                    int n = i++;
+                    nArray[n] = nArray[n] * upsample;
+                }
+                while (i < frame_size) {
+                    freq[0][i] = 0;
+                    ++i;
+                }
+            }
+            Bands.compute_band_energies(celt_mode, freq, bandE, 21, 1, LM);
+            QuantizeBands.amp2Log2(celt_mode, 21, 21, bandE[0], bandLogE, 21 * c, 1);
+            for (i = 1; i < 21; ++i) {
+                bandLogE[21 * c + i] = Inlines.MAX16(bandLogE[21 * c + i], bandLogE[21 * c + i - 1] - 1024);
+            }
+            for (i = 19; i >= 0; --i) {
+                bandLogE[21 * c + i] = Inlines.MAX16(bandLogE[21 * c + i], bandLogE[21 * c + i + 1] - 2048);
+            }
+            if (pos[c] == 1) {
+                for (i = 0; i < 21; ++i) {
+                    maskLogE[0][i] = OpusMSEncoder.logSum(maskLogE[0][i], bandLogE[21 * c + i]);
+                }
+            } else if (pos[c] == 3) {
+                for (i = 0; i < 21; ++i) {
+                    maskLogE[2][i] = OpusMSEncoder.logSum(maskLogE[2][i], bandLogE[21 * c + i]);
+                }
+            } else if (pos[c] == 2) {
+                for (i = 0; i < 21; ++i) {
+                    maskLogE[0][i] = OpusMSEncoder.logSum(maskLogE[0][i], bandLogE[21 * c + i] - 512);
+                    maskLogE[2][i] = OpusMSEncoder.logSum(maskLogE[2][i], bandLogE[21 * c + i] - 512);
+                }
+            }
+            System.arraycopy(input, frame_size, mem, c * overlap, overlap);
+        }
+        for (i = 0; i < 21; ++i) {
+            maskLogE[1][i] = Inlines.MIN32(maskLogE[0][i], maskLogE[2][i]);
+        }
+        int channel_offset = Inlines.HALF16(Inlines.celt_log2(32768 / (channels - 1)));
+        for (c = 0; c < 3; ++c) {
+            i = 0;
+            while (i < 21) {
+                int[] nArray = maskLogE[c];
+                int n = i++;
+                nArray[n] = nArray[n] + channel_offset;
+            }
+        }
+        for (c = 0; c < channels; ++c) {
+            if (pos[c] != 0) {
+                int[] mask = maskLogE[pos[c] - 1];
+                for (i = 0; i < 21; ++i) {
+                    bandLogE[21 * c + i] = bandLogE[21 * c + i] - mask[i];
+                }
+                continue;
+            }
+            for (i = 0; i < 21; ++i) {
+                bandLogE[21 * c + i] = 0;
+            }
+        }
+    }
+
+    int opus_multistream_encoder_init(int Fs, int channels, int streams, int coupled_streams, short[] mapping, OpusApplication application, int surround) {
+        int ret;
+        int i;
+        if (channels > 255 || channels < 1 || coupled_streams > streams || streams < 1 || coupled_streams < 0 || streams > 255 - coupled_streams) {
+            return OpusError.OPUS_BAD_ARG;
+        }
+        this.layout.nb_channels = channels;
+        this.layout.nb_streams = streams;
+        this.layout.nb_coupled_streams = coupled_streams;
+        this.subframe_mem[2] = 0.0f;
+        this.subframe_mem[1] = 0.0f;
+        this.subframe_mem[0] = 0.0f;
+        if (surround == 0) {
+            this.lfe_stream = -1;
+        }
+        this.bitrate_bps = -1000;
+        this.application = application;
+        this.variable_duration = OpusFramesize.OPUS_FRAMESIZE_ARG;
+        for (i = 0; i < this.layout.nb_channels; ++i) {
+            this.layout.mapping[i] = mapping[i];
+        }
+        if (OpusMultistream.validate_layout(this.layout) == 0 || OpusMSEncoder.validate_encoder_layout(this.layout) == 0) {
+            return OpusError.OPUS_BAD_ARG;
+        }
+        int encoder_ptr = 0;
+        for (i = 0; i < this.layout.nb_coupled_streams; ++i) {
+            ret = this.encoders[encoder_ptr].opus_init_encoder(Fs, 2, application);
+            if (ret != OpusError.OPUS_OK) {
+                return ret;
+            }
+            if (i == this.lfe_stream) {
+                this.encoders[encoder_ptr].setIsLFE(true);
+            }
+            ++encoder_ptr;
+        }
+        while (i < this.layout.nb_streams) {
+            ret = this.encoders[encoder_ptr].opus_init_encoder(Fs, 1, application);
+            if (i == this.lfe_stream) {
+                this.encoders[encoder_ptr].setIsLFE(true);
+            }
+            if (ret != OpusError.OPUS_OK) {
+                return ret;
+            }
+            ++encoder_ptr;
+            ++i;
+        }
+        if (surround != 0) {
+            Arrays.MemSet(this.preemph_mem, 0, channels);
+            Arrays.MemSet(this.window_mem, 0, channels * 120);
+        }
+        this.surround = surround;
+        return OpusError.OPUS_OK;
+    }
+
+    /*
+     * Enabled force condition propagation
+     * Lifted jumps to return sites
+     */
+    int opus_multistream_surround_encoder_init(int Fs, int channels, int mapping_family, BoxedValueInt streams, BoxedValueInt coupled_streams, short[] mapping, OpusApplication application) {
+        streams.Val = 0;
+        coupled_streams.Val = 0;
+        if (channels > 255 || channels < 1) {
+            return OpusError.OPUS_BAD_ARG;
+        }
+        this.lfe_stream = -1;
+        if (mapping_family == 0) {
+            if (channels == 1) {
+                streams.Val = 1;
+                coupled_streams.Val = 0;
+                mapping[0] = 0;
+                return this.opus_multistream_encoder_init(Fs, channels, streams.Val, coupled_streams.Val, mapping, application, channels > 2 && mapping_family == 1 ? 1 : 0);
+            } else {
+                if (channels != 2) return OpusError.OPUS_UNIMPLEMENTED;
+                streams.Val = 1;
+                coupled_streams.Val = 1;
+                mapping[0] = 0;
+                mapping[1] = 1;
+            }
+            return this.opus_multistream_encoder_init(Fs, channels, streams.Val, coupled_streams.Val, mapping, application, channels > 2 && mapping_family == 1 ? 1 : 0);
+        } else if (mapping_family == 1 && channels <= 8 && channels >= 1) {
+            streams.Val = VorbisLayout.vorbis_mappings[channels - 1].nb_streams;
+            coupled_streams.Val = VorbisLayout.vorbis_mappings[channels - 1].nb_coupled_streams;
+            for (int i = 0; i < channels; ++i) {
+                mapping[i] = VorbisLayout.vorbis_mappings[channels - 1].mapping[i];
+            }
+            if (channels < 6) return this.opus_multistream_encoder_init(Fs, channels, streams.Val, coupled_streams.Val, mapping, application, channels > 2 && mapping_family == 1 ? 1 : 0);
+            this.lfe_stream = streams.Val - 1;
+            return this.opus_multistream_encoder_init(Fs, channels, streams.Val, coupled_streams.Val, mapping, application, channels > 2 && mapping_family == 1 ? 1 : 0);
+        } else {
+            if (mapping_family != 255) return OpusError.OPUS_UNIMPLEMENTED;
+            streams.Val = channels;
+            coupled_streams.Val = 0;
+            for (int i = 0; i < channels; i = (int)((byte)(i + 1))) {
+                mapping[i] = (short)i;
+            }
+        }
+        return this.opus_multistream_encoder_init(Fs, channels, streams.Val, coupled_streams.Val, mapping, application, channels > 2 && mapping_family == 1 ? 1 : 0);
+    }
+
+    public static OpusMSEncoder Create(int Fs, int channels, int streams, int coupled_streams, short[] mapping, OpusApplication application) throws OpusException {
+        if (channels > 255 || channels < 1 || coupled_streams > streams || streams < 1 || coupled_streams < 0 || streams > 255 - coupled_streams) {
+            throw new IllegalArgumentException("Invalid channel / stream configuration");
+        }
+        OpusMSEncoder st = new OpusMSEncoder(streams, coupled_streams);
+        int ret = st.opus_multistream_encoder_init(Fs, channels, streams, coupled_streams, mapping, application, 0);
+        if (ret != OpusError.OPUS_OK) {
+            if (ret == OpusError.OPUS_BAD_ARG) {
+                throw new IllegalArgumentException("OPUS_BAD_ARG when creating MS encoder");
+            }
+            throw new OpusException("Could not create MS encoder", ret);
+        }
+        return st;
+    }
+
+    /*
+     * Enabled force condition propagation
+     * Lifted jumps to return sites
+     */
+    static void GetStreamCount(int channels, int mapping_family, BoxedValueInt nb_streams, BoxedValueInt nb_coupled_streams) {
+        if (mapping_family == 0) {
+            if (channels == 1) {
+                nb_streams.Val = 1;
+                nb_coupled_streams.Val = 0;
+                return;
+            } else {
+                if (channels != 2) throw new IllegalArgumentException("More than 2 channels requires custom mappings");
+                nb_streams.Val = 1;
+                nb_coupled_streams.Val = 1;
+            }
+            return;
+        } else if (mapping_family == 1 && channels <= 8 && channels >= 1) {
+            nb_streams.Val = VorbisLayout.vorbis_mappings[channels - 1].nb_streams;
+            nb_coupled_streams.Val = VorbisLayout.vorbis_mappings[channels - 1].nb_coupled_streams;
+            return;
+        } else {
+            if (mapping_family != 255) throw new IllegalArgumentException("Invalid mapping family");
+            nb_streams.Val = channels;
+            nb_coupled_streams.Val = 0;
+        }
+    }
+
+    public static OpusMSEncoder CreateSurround(int Fs, int channels, int mapping_family, BoxedValueInt streams, BoxedValueInt coupled_streams, short[] mapping, OpusApplication application) throws OpusException {
+        if (channels > 255 || channels < 1 || application == OpusApplication.OPUS_APPLICATION_UNIMPLEMENTED) {
+            throw new IllegalArgumentException("Invalid channel count or application");
+        }
+        BoxedValueInt nb_streams = new BoxedValueInt(0);
+        BoxedValueInt nb_coupled_streams = new BoxedValueInt(0);
+        OpusMSEncoder.GetStreamCount(channels, mapping_family, nb_streams, nb_coupled_streams);
+        OpusMSEncoder st = new OpusMSEncoder(nb_streams.Val, nb_coupled_streams.Val);
+        int ret = st.opus_multistream_surround_encoder_init(Fs, channels, mapping_family, streams, coupled_streams, mapping, application);
+        if (ret != OpusError.OPUS_OK) {
+            if (ret == OpusError.OPUS_BAD_ARG) {
+                throw new IllegalArgumentException("Bad argument passed to CreateSurround");
+            }
+            throw new OpusException("Could not create multistream encoder", ret);
+        }
+        return st;
+    }
+
+    int surround_rate_allocation(int[] out_rates, int frame_size) {
+        int channel_rate;
+        int rate_sum = 0;
+        OpusEncoder ptr = this.encoders[0];
+        int Fs = ptr.getSampleRate();
+        int stream_offset = this.bitrate_bps > this.layout.nb_channels * 40000 ? 20000 : this.bitrate_bps / this.layout.nb_channels / 2;
+        stream_offset += 60 * (Fs / frame_size - 50);
+        int lfe_offset = 3500 + 60 * (Fs / frame_size - 50);
+        int coupled_ratio = 512;
+        int lfe_ratio = 32;
+        if (this.bitrate_bps == -1000) {
+            channel_rate = Fs + 60 * Fs / frame_size;
+        } else if (this.bitrate_bps == -1) {
+            channel_rate = 300000;
+        } else {
+            int nb_lfe = this.lfe_stream != -1 ? 1 : 0;
+            int nb_coupled = this.layout.nb_coupled_streams;
+            int nb_uncoupled = this.layout.nb_streams - nb_coupled - nb_lfe;
+            int total = (nb_uncoupled << 8) + coupled_ratio * nb_coupled + nb_lfe * lfe_ratio;
+            channel_rate = 256 * (this.bitrate_bps - lfe_offset * nb_lfe - stream_offset * (nb_coupled + nb_uncoupled)) / total;
+        }
+        for (int i = 0; i < this.layout.nb_streams; ++i) {
+            out_rates[i] = i < this.layout.nb_coupled_streams ? stream_offset + (channel_rate * coupled_ratio >> 8) : (i != this.lfe_stream ? stream_offset + channel_rate : lfe_offset + (channel_rate * lfe_ratio >> 8));
+            out_rates[i] = Inlines.IMAX(out_rates[i], 500);
+            rate_sum += out_rates[i];
+        }
+        return rate_sum;
+    }
+
+    int opus_multistream_encode_native(short[] pcm, int pcm_ptr, int analysis_frame_size, byte[] data, int data_ptr, int max_data_bytes, int lsb_depth, int float_api) {
+        int s;
+        byte[] tmp_data = new byte[3832];
+        OpusRepacketizer rp = new OpusRepacketizer();
+        int[] bitrates = new int[256];
+        int[] bandLogE = new int[42];
+        int[] mem = null;
+        int[] preemph_mem = null;
+        if (this.surround != 0) {
+            preemph_mem = this.preemph_mem;
+            mem = this.window_mem;
+        }
+        int encoder_ptr = 0;
+        int Fs = this.encoders[encoder_ptr].getSampleRate();
+        boolean vbr = this.encoders[encoder_ptr].getUseVBR();
+        CeltMode celt_mode = this.encoders[encoder_ptr].GetCeltMode();
+        int channels = this.layout.nb_streams + this.layout.nb_coupled_streams;
+        int delay_compensation = this.encoders[encoder_ptr].getLookahead();
+        int frame_size = CodecHelpers.compute_frame_size(pcm, pcm_ptr, analysis_frame_size, this.variable_duration, channels, Fs, this.bitrate_bps, delay_compensation -= Fs / 400, this.subframe_mem, this.encoders[encoder_ptr].analysis.enabled);
+        if (400 * frame_size < Fs) {
+            return OpusError.OPUS_BAD_ARG;
+        }
+        if (400 * frame_size != Fs && 200 * frame_size != Fs && 100 * frame_size != Fs && 50 * frame_size != Fs && 25 * frame_size != Fs && 50 * frame_size != 3 * Fs) {
+            return OpusError.OPUS_BAD_ARG;
+        }
+        int smallest_packet = this.layout.nb_streams * 2 - 1;
+        if (max_data_bytes < smallest_packet) {
+            return OpusError.OPUS_BUFFER_TOO_SMALL;
+        }
+        short[] buf = new short[2 * frame_size];
+        int[] bandSMR = new int[21 * this.layout.nb_channels];
+        if (this.surround != 0) {
+            OpusMSEncoder.surround_analysis(celt_mode, pcm, pcm_ptr, bandSMR, mem, preemph_mem, frame_size, 120, this.layout.nb_channels, Fs);
+        }
+        int rate_sum = this.surround_rate_allocation(bitrates, frame_size);
+        if (!vbr) {
+            if (this.bitrate_bps == -1000) {
+                max_data_bytes = Inlines.IMIN(max_data_bytes, 3 * rate_sum / (24 * Fs / frame_size));
+            } else if (this.bitrate_bps != -1) {
+                max_data_bytes = Inlines.IMIN(max_data_bytes, Inlines.IMAX(smallest_packet, 3 * this.bitrate_bps / (24 * Fs / frame_size)));
+            }
+        }
+        for (s = 0; s < this.layout.nb_streams; ++s) {
+            OpusEncoder enc = this.encoders[encoder_ptr];
+            ++encoder_ptr;
+            enc.setBitrate(bitrates[s]);
+            if (this.surround == 0) continue;
+            int equiv_rate = this.bitrate_bps;
+            if (frame_size * 50 < Fs) {
+                equiv_rate -= 60 * (Fs / frame_size - 50) * this.layout.nb_channels;
+            }
+            if (equiv_rate > 10000 * this.layout.nb_channels) {
+                enc.setBandwidth(OpusBandwidth.OPUS_BANDWIDTH_FULLBAND);
+            } else if (equiv_rate > 7000 * this.layout.nb_channels) {
+                enc.setBandwidth(OpusBandwidth.OPUS_BANDWIDTH_SUPERWIDEBAND);
+            } else if (equiv_rate > 5000 * this.layout.nb_channels) {
+                enc.setBandwidth(OpusBandwidth.OPUS_BANDWIDTH_WIDEBAND);
+            } else {
+                enc.setBandwidth(OpusBandwidth.OPUS_BANDWIDTH_NARROWBAND);
+            }
+            if (s >= this.layout.nb_coupled_streams) continue;
+            enc.setForceMode(OpusMode.MODE_CELT_ONLY);
+            enc.setForceChannels(2);
+        }
+        encoder_ptr = 0;
+        int tot_size = 0;
+        for (s = 0; s < this.layout.nb_streams; ++s) {
+            int len;
+            int c2;
+            int c1;
+            int i;
+            rp.Reset();
+            OpusEncoder enc = this.encoders[encoder_ptr];
+            if (s < this.layout.nb_coupled_streams) {
+                int left = OpusMultistream.get_left_channel(this.layout, s, -1);
+                int right = OpusMultistream.get_right_channel(this.layout, s, -1);
+                OpusMSEncoder.opus_copy_channel_in_short(buf, 0, 2, pcm, pcm_ptr, this.layout.nb_channels, left, frame_size);
+                OpusMSEncoder.opus_copy_channel_in_short(buf, 1, 2, pcm, pcm_ptr, this.layout.nb_channels, right, frame_size);
+                ++encoder_ptr;
+                if (this.surround != 0) {
+                    for (i = 0; i < 21; ++i) {
+                        bandLogE[i] = bandSMR[21 * left + i];
+                        bandLogE[21 + i] = bandSMR[21 * right + i];
+                    }
+                }
+                c1 = left;
+                c2 = right;
+            } else {
+                int chan = OpusMultistream.get_mono_channel(this.layout, s, -1);
+                OpusMSEncoder.opus_copy_channel_in_short(buf, 0, 1, pcm, pcm_ptr, this.layout.nb_channels, chan, frame_size);
+                ++encoder_ptr;
+                if (this.surround != 0) {
+                    for (i = 0; i < 21; ++i) {
+                        bandLogE[i] = bandSMR[21 * chan + i];
+                    }
+                }
+                c1 = chan;
+                c2 = -1;
+            }
+            if (this.surround != 0) {
+                enc.SetEnergyMask(bandLogE);
+            }
+            int curr_max = max_data_bytes - tot_size;
+            curr_max -= Inlines.IMAX(0, 2 * (this.layout.nb_streams - s - 1) - 1);
+            curr_max = Inlines.IMIN(curr_max, 3832);
+            if (s != this.layout.nb_streams - 1) {
+                curr_max -= curr_max > 253 ? 2 : 1;
+            }
+            if (!vbr && s == this.layout.nb_streams - 1) {
+                enc.setBitrate(curr_max * (8 * Fs / frame_size));
+            }
+            if ((len = enc.opus_encode_native(buf, 0, frame_size, tmp_data, 0, curr_max, lsb_depth, pcm, pcm_ptr, analysis_frame_size, c1, c2, this.layout.nb_channels, float_api)) < 0) {
+                return len;
+            }
+            rp.addPacket(tmp_data, 0, len);
+            len = rp.opus_repacketizer_out_range_impl(0, rp.getNumFrames(), data, data_ptr, max_data_bytes - tot_size, s != this.layout.nb_streams - 1 ? 1 : 0, !vbr && s == this.layout.nb_streams - 1 ? 1 : 0);
+            data_ptr += len;
+            tot_size += len;
+        }
+        return tot_size;
+    }
+
+    static void opus_copy_channel_in_short(short[] dst, int dst_ptr, int dst_stride, short[] src, int src_ptr, int src_stride, int src_channel, int frame_size) {
+        for (int i = 0; i < frame_size; ++i) {
+            dst[dst_ptr + i * dst_stride] = src[i * src_stride + src_channel + src_ptr];
+        }
+    }
+
+    public int encodeMultistream(short[] pcm, int pcm_offset, int frame_size, byte[] outputBuffer, int outputBuffer_offset, int max_data_bytes) {
+        return this.opus_multistream_encode_native(pcm, pcm_offset, frame_size, outputBuffer, outputBuffer_offset, max_data_bytes, 16, 0);
+    }
+
+    public int getBitrate() {
+        int value = 0;
+        int encoder_ptr = 0;
+        for (int s = 0; s < this.layout.nb_streams; ++s) {
+            OpusEncoder enc = this.encoders[encoder_ptr++];
+            value += enc.getBitrate();
+        }
+        return value;
+    }
+
+    public void setBitrate(int value) {
+        if (value < 0 && value != -1000 && value != -1) {
+            throw new IllegalArgumentException("Invalid bitrate");
+        }
+        this.bitrate_bps = value;
+    }
+
+    public OpusApplication getApplication() {
+        return this.encoders[0].getApplication();
+    }
+
+    public void setApplication(OpusApplication value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setApplication(value);
+        }
+    }
+
+    public int getForceChannels() {
+        return this.encoders[0].getForceChannels();
+    }
+
+    public void setForceChannels(int value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setForceChannels(value);
+        }
+    }
+
+    public OpusBandwidth getMaxBandwidth() {
+        return this.encoders[0].getMaxBandwidth();
+    }
+
+    public void setMaxBandwidth(OpusBandwidth value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setMaxBandwidth(value);
+        }
+    }
+
+    public OpusBandwidth getBandwidth() {
+        return this.encoders[0].getBandwidth();
+    }
+
+    public void setBandwidth(OpusBandwidth value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setBandwidth(value);
+        }
+    }
+
+    public boolean getUseDTX() {
+        return this.encoders[0].getUseDTX();
+    }
+
+    public void setUseDTX(boolean value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setUseDTX(value);
+        }
+    }
+
+    public int getComplexity() {
+        return this.encoders[0].getComplexity();
+    }
+
+    public void setComplexity(int value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setComplexity(value);
+        }
+    }
+
+    public OpusMode getForceMode() {
+        return this.encoders[0].getForceMode();
+    }
+
+    public void setForceMode(OpusMode value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setForceMode(value);
+        }
+    }
+
+    public boolean getUseInbandFEC() {
+        return this.encoders[0].getUseInbandFEC();
+    }
+
+    public void setUseInbandFEC(boolean value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setUseInbandFEC(value);
+        }
+    }
+
+    public int getPacketLossPercent() {
+        return this.encoders[0].getPacketLossPercent();
+    }
+
+    public void setPacketLossPercent(int value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setPacketLossPercent(value);
+        }
+    }
+
+    public boolean getUseVBR() {
+        return this.encoders[0].getUseVBR();
+    }
+
+    public void setUseVBR(boolean value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setUseVBR(value);
+        }
+    }
+
+    public boolean getUseConstrainedVBR() {
+        return this.encoders[0].getUseConstrainedVBR();
+    }
+
+    public void setUseConstrainedVBR(boolean value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setUseConstrainedVBR(value);
+        }
+    }
+
+    public OpusSignal getSignalType() {
+        return this.encoders[0].getSignalType();
+    }
+
+    public void setSignalType(OpusSignal value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setSignalType(value);
+        }
+    }
+
+    public int getLookahead() {
+        return this.encoders[0].getLookahead();
+    }
+
+    public int getSampleRate() {
+        return this.encoders[0].getSampleRate();
+    }
+
+    public int getFinalRange() {
+        int value = 0;
+        int encoder_ptr = 0;
+        for (int s = 0; s < this.layout.nb_streams; ++s) {
+            value ^= this.encoders[encoder_ptr++].getFinalRange();
+        }
+        return value;
+    }
+
+    public int getLSBDepth() {
+        return this.encoders[0].getLSBDepth();
+    }
+
+    public void setLSBDepth(int value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setLSBDepth(value);
+        }
+    }
+
+    public boolean getPredictionDisabled() {
+        return this.encoders[0].getPredictionDisabled();
+    }
+
+    public void setPredictionDisabled(boolean value) {
+        for (int encoder_ptr = 0; encoder_ptr < this.layout.nb_streams; ++encoder_ptr) {
+            this.encoders[encoder_ptr].setPredictionDisabled(value);
+        }
+    }
+
+    public OpusFramesize getExpertFrameDuration() {
+        return this.variable_duration;
+    }
+
+    public void setExpertFrameDuration(OpusFramesize value) {
+        this.variable_duration = value;
+    }
+
+    public OpusEncoder getMultistreamEncoderState(int streamId) {
+        if (streamId >= this.layout.nb_streams) {
+            throw new IllegalArgumentException("Requested stream doesn't exist");
+        }
+        return this.encoders[streamId];
+    }
+}
+