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source/decompiled/de/maxhenkel/voicechat/concentus/DecodePulses.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.CodeSigns;
+import de.maxhenkel.voicechat.concentus.EntropyCoder;
+import de.maxhenkel.voicechat.concentus.Inlines;
+import de.maxhenkel.voicechat.concentus.ShellCoder;
+import de.maxhenkel.voicechat.concentus.SilkTables;
+
+class DecodePulses {
+    DecodePulses() {
+    }
+
+    static void silk_decode_pulses(EntropyCoder psRangeDec, short[] pulses, int signalType, int quantOffsetType, int frame_length) {
+        int i;
+        int[] sum_pulses = new int[20];
+        int[] nLshifts = new int[20];
+        int RateLevelIndex = psRangeDec.dec_icdf(SilkTables.silk_rate_levels_iCDF[signalType >> 1], 8);
+        Inlines.OpusAssert(true);
+        int iter = Inlines.silk_RSHIFT(frame_length, 4);
+        if (iter * 16 < frame_length) {
+            Inlines.OpusAssert(frame_length == 120);
+            ++iter;
+        }
+        for (i = 0; i < iter; ++i) {
+            nLshifts[i] = 0;
+            sum_pulses[i] = psRangeDec.dec_icdf(SilkTables.silk_pulses_per_block_iCDF[RateLevelIndex], 8);
+            while (sum_pulses[i] == 17) {
+                int n = i;
+                nLshifts[n] = nLshifts[n] + 1;
+                sum_pulses[i] = psRangeDec.dec_icdf(SilkTables.silk_pulses_per_block_iCDF[9], nLshifts[i] == 10 ? 1 : 0, 8);
+            }
+        }
+        for (i = 0; i < iter; ++i) {
+            if (sum_pulses[i] > 0) {
+                ShellCoder.silk_shell_decoder(pulses, Inlines.silk_SMULBB(i, 16), psRangeDec, sum_pulses[i]);
+                continue;
+            }
+            Arrays.MemSetWithOffset(pulses, (short)0, Inlines.silk_SMULBB(i, 16), 16);
+        }
+        for (i = 0; i < iter; ++i) {
+            if (nLshifts[i] <= 0) continue;
+            int nLS = nLshifts[i];
+            int pulses_ptr = Inlines.silk_SMULBB(i, 16);
+            for (int k = 0; k < 16; ++k) {
+                int abs_q = pulses[pulses_ptr + k];
+                for (int j = 0; j < nLS; ++j) {
+                    abs_q = Inlines.silk_LSHIFT(abs_q, 1);
+                    abs_q += psRangeDec.dec_icdf(SilkTables.silk_lsb_iCDF, 8);
+                }
+                pulses[pulses_ptr + k] = (short)abs_q;
+            }
+            int n = i;
+            sum_pulses[n] = sum_pulses[n] | nLS << 5;
+        }
+        CodeSigns.silk_decode_signs(psRangeDec, pulses, frame_length, signalType, quantOffsetType, sum_pulses);
+    }
+}
+