run-time MLP code

src/detect.h

+/* Copyright (c) 2011 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "arch.h"
+#include "celt.h"
+
+void feature_analysis_fixed(CELTEncoder *celt_enc, const celt_int16 *x);

src/features.c

@@ -33,7 +33,7 @@
 #include "celt.h"
 #include "modes.h"
 #include "arch.h"
-#include "features.h"
+#include "detect.h"
 #include "quant_bands.h"
 
 #define NBANDS 17

src/mlp.c

+/* Copyright (c) 2008-2011 Octasic Inc.
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include <math.h>
+#include "mlp.h"
+#include "arch.h"
+#include "tansig_table.h"
+#define MAX_NEURONS 100
+
+#ifdef FIXED_POINT
+extern const celt_word16 tansig_table[501];
+static inline celt_word16 tansig_approx(celt_word32 _x) /* Q19 */
+{
+	int i;
+	celt_word16 xx; /* Q11 */
+	/*double x, y;*/
+	celt_word16 dy, yy; /* Q14 */
+	/*x = 1.9073e-06*_x;*/
+	if (_x>=QCONST32(10,19))
+		return QCONST32(1.,14);
+	if (_x<=-QCONST32(10,19))
+		return -QCONST32(1.,14);
+	xx = EXTRACT16(SHR32(_x, 8));
+	/*i = lrint(25*x);*/
+	i = SHR32(ADD32(1024,MULT16_16(25, xx)),11);
+	/*x -= .04*i;*/
+	xx -= EXTRACT16(SHR32(MULT16_16(20972,i),8));
+	/*x = xx*(1./2048);*/
+	/*y = tansig_table[250+i];*/
+	yy = tansig_table[250+i];
+	/*y = yy*(1./16384);*/
+	dy = 16384-MULT16_16_Q14(yy,yy);
+	yy = yy + MULT16_16_Q14(MULT16_16_Q11(xx,dy),(16384 - MULT16_16_Q11(yy,xx)));
+	return yy;
+}
+#else
+/*extern const float tansig_table[501];*/
+static inline double tansig_approx(double x)
+{
+	int i;
+	double y, dy;
+	if (x>=10)
+		return 1;
+	if (x<=-10)
+		return -1;
+	i = lrint(25*x);
+	x -= .04*i;
+	y = tansig_table[250+i];
+	dy = 1-y*y;
+	y = y + x*dy*(1 - y*x);
+	return y;
+}
+#endif
+
+void mlp_process(const MLP *m, const celt_word16 *in, celt_word16 *out)
+{
+	int j;
+	celt_word16 hidden[MAX_NEURONS];
+	const celt_word16 *W = m->weights;
+	/* Copy to tmp_in */
+	for (j=0;j<m->topo[1];j++)
+	{
+		int k;
+		celt_word32 sum = SHL32(EXTEND32(*W++),8);
+		for (k=0;k<m->topo[0];k++)
+			sum = MAC16_16(sum, in[k],*W++);
+		hidden[j] = tansig_approx(sum);
+	}
+	for (j=0;j<m->topo[2];j++)
+	{
+		int k;
+		celt_word32 sum = SHL32(EXTEND32(*W++),14);
+		for (k=0;k<m->topo[1];k++)
+			sum = MAC16_16(sum, hidden[k], *W++);
+		out[j] = tansig_approx(EXTRACT16(PSHR32(sum,17)));
+	}
+}
+

src/mlp.h

+/* Copyright (c) 2008-2011 Octasic Inc.
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _MLP_H_
+#define _MLP_H_
+
+#include "arch.h"
+
+typedef struct {
+	int layers;
+	const int *topo;
+	const celt_word16 *weights;
+} MLP;
+
+void mlp_process(const MLP *m, const celt_word16 *in, celt_word16 *out);
+
+#endif /* _MLP_H_ */

src/mlp_prob.c

+/* Copyright (c) 2008-2011 Octasic Inc.
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "mlp.h"
+#include "mlp_data.c"
+
+int main(int argc, char **argv)
+{
+    int ret;
+    int i, j;
+    float *data;
+    int N, nbVectors;
+
+    N = atoi(argv[1]);
+    nbVectors = atoi(argv[2]);
+
+    data = malloc(sizeof(*data)*N);
+    for (i=0;i<nbVectors;i++)
+    {
+        float out;
+        for (j=0;j<N;j++)
+            ret = scanf("%f ", data+j);
+        mlp_process(&net, data, &out);
+        printf("%f\n", out);
+    }
+
+    return 0;
+}

src/tansig_table.h

+/* This file is auto-generated by gen_tables */
+
+static const celt_word16 tansig_table[501] = {
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, 
+-1.000000, -0.999999, -0.999999, -0.999999, -0.999999, 
+-0.999999, -0.999999, -0.999999, -0.999999, -0.999999, 
+-0.999999, -0.999999, -0.999999, -0.999999, -0.999998, 
+-0.999998, -0.999998, -0.999998, -0.999998, -0.999998, 
+-0.999997, -0.999997, -0.999997, -0.999997, -0.999997, 
+-0.999996, -0.999996, -0.999996, -0.999995, -0.999995, 
+-0.999994, -0.999994, -0.999994, -0.999993, -0.999992, 
+-0.999992, -0.999991, -0.999990, -0.999990, -0.999989, 
+-0.999988, -0.999987, -0.999986, -0.999984, -0.999983, 
+-0.999982, -0.999980, -0.999978, -0.999977, -0.999975, 
+-0.999973, -0.999970, -0.999968, -0.999965, -0.999962, 
+-0.999959, -0.999956, -0.999952, -0.999948, -0.999944, 
+-0.999939, -0.999934, -0.999929, -0.999923, -0.999916, 
+-0.999909, -0.999902, -0.999893, -0.999885, -0.999875, 
+-0.999865, -0.999853, -0.999841, -0.999828, -0.999813, 
+-0.999798, -0.999781, -0.999763, -0.999743, -0.999722, 
+-0.999699, -0.999673, -0.999646, -0.999617, -0.999585, 
+-0.999550, -0.999513, -0.999472, -0.999428, -0.999381, 
+-0.999329, -0.999273, -0.999213, -0.999147, -0.999076, 
+-0.999000, -0.998916, -0.998826, -0.998728, -0.998623, 
+-0.998508, -0.998384, -0.998249, -0.998104, -0.997946, 
+-0.997775, -0.997590, -0.997389, -0.997172, -0.996937, 
+-0.996682, -0.996407, -0.996108, -0.995784, -0.995434, 
+-0.995055, -0.994644, -0.994199, -0.993718, -0.993196, 
+-0.992631, -0.992020, -0.991359, -0.990642, -0.989867, 
+-0.989027, -0.988119, -0.987136, -0.986072, -0.984921, 
+-0.983675, -0.982327, -0.980869, -0.979293, -0.977587, 
+-0.975743, -0.973749, -0.971594, -0.969265, -0.966747, 
+-0.964028, -0.961090, -0.957917, -0.954492, -0.950795, 
+-0.946806, -0.942503, -0.937863, -0.932862, -0.927473, 
+-0.921669, -0.915420, -0.908698, -0.901468, -0.893698, 
+-0.885352, -0.876393, -0.866784, -0.856485, -0.845456, 
+-0.833655, -0.821040, -0.807569, -0.793199, -0.777888, 
+-0.761594, -0.744277, -0.725897, -0.706419, -0.685809, 
+-0.664037, -0.641077, -0.616909, -0.591519, -0.564900, 
+-0.537050, -0.507977, -0.477700, -0.446244, -0.413644, 
+-0.379949, -0.345214, -0.309507, -0.272905, -0.235496, 
+-0.197375, -0.158649, -0.119427, -0.079830, -0.039979, 
+0.000000, 0.039979, 0.079830, 0.119427, 0.158649, 
+0.197375, 0.235496, 0.272905, 0.309507, 0.345214, 
+0.379949, 0.413644, 0.446244, 0.477700, 0.507977, 
+0.537050, 0.564900, 0.591519, 0.616909, 0.641077, 
+0.664037, 0.685809, 0.706419, 0.725897, 0.744277, 
+0.761594, 0.777888, 0.793199, 0.807569, 0.821040, 
+0.833655, 0.845456, 0.856485, 0.866784, 0.876393, 
+0.885352, 0.893698, 0.901468, 0.908698, 0.915420, 
+0.921669, 0.927473, 0.932862, 0.937863, 0.942503, 
+0.946806, 0.950795, 0.954492, 0.957917, 0.961090, 
+0.964028, 0.966747, 0.969265, 0.971594, 0.973749, 
+0.975743, 0.977587, 0.979293, 0.980869, 0.982327, 
+0.983675, 0.984921, 0.986072, 0.987136, 0.988119, 
+0.989027, 0.989867, 0.990642, 0.991359, 0.992020, 
+0.992631, 0.993196, 0.993718, 0.994199, 0.994644, 
+0.995055, 0.995434, 0.995784, 0.996108, 0.996407, 
+0.996682, 0.996937, 0.997172, 0.997389, 0.997590, 
+0.997775, 0.997946, 0.998104, 0.998249, 0.998384, 
+0.998508, 0.998623, 0.998728, 0.998826, 0.998916, 
+0.999000, 0.999076, 0.999147, 0.999213, 0.999273, 
+0.999329, 0.999381, 0.999428, 0.999472, 0.999513, 
+0.999550, 0.999585, 0.999617, 0.999646, 0.999673, 
+0.999699, 0.999722, 0.999743, 0.999763, 0.999781, 
+0.999798, 0.999813, 0.999828, 0.999841, 0.999853, 
+0.999865, 0.999875, 0.999885, 0.999893, 0.999902, 
+0.999909, 0.999916, 0.999923, 0.999929, 0.999934, 
+0.999939, 0.999944, 0.999948, 0.999952, 0.999956, 
+0.999959, 0.999962, 0.999965, 0.999968, 0.999970, 
+0.999973, 0.999975, 0.999977, 0.999978, 0.999980, 
+0.999982, 0.999983, 0.999984, 0.999986, 0.999987, 
+0.999988, 0.999989, 0.999990, 0.999990, 0.999991, 
+0.999992, 0.999992, 0.999993, 0.999994, 0.999994, 
+0.999994, 0.999995, 0.999995, 0.999996, 0.999996, 
+0.999996, 0.999997, 0.999997, 0.999997, 0.999997, 
+0.999997, 0.999998, 0.999998, 0.999998, 0.999998, 
+0.999998, 0.999998, 0.999999, 0.999999, 0.999999, 
+0.999999, 0.999999, 0.999999, 0.999999, 0.999999, 
+0.999999, 0.999999, 0.999999, 0.999999, 0.999999, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 1.000000, 1.000000, 1.000000, 1.000000, 
+1.000000, 
+};