Release 1.0.17

* Implemented SIMD-optimized 2-knee compressor curve and gain calculation functions.
* Implemented several AVX-512 optimized packed complex functions.
* Removed pcomplex_add_r function. Use pcomplex_r2c_add2 function instead.
* Fixed improper formula for complex_div and pcomplex_div functions.
* Implemented sqr1, sqr2, ssqr1 and ssqr2 functions.
* Implemented axis_apply_lin1 function.
* Updated module versions in dependencies.

Author: sadko4u

CHANGELOG

@@ -2,6 +2,15 @@
 * RECENT CHANGES
 *******************************************************************************
 
+=== 1.0.17 ===
+* Implemented SIMD-optimized 2-knee compressor curve and gain calculation functions.
+* Implemented several AVX-512 optimized packed complex functions.
+* Removed pcomplex_add_r function. Use pcomplex_r2c_add2 function instead.
+* Fixed improper formula for complex_div and pcomplex_div functions.
+* Implemented sqr1, sqr2, ssqr1 and ssqr2 functions.
+* Implemented axis_apply_lin1 function.
+* Updated module versions in dependencies.
+
 === 1.0.16 ===
 * Fixed improper AVX-512 detection which causes crash for several functions.
 

include/lsp-plug.in/dsp/common/dynamics.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
+ *           (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
+ *
+ * This file is part of lsp-dsp-lib
+ * Created on: 5 окт. 2023 г.
+ *
+ * lsp-dsp-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * lsp-dsp-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LSP_PLUG_IN_DSP_COMMON_DYNAMICS_H_
+#define LSP_PLUG_IN_DSP_COMMON_DYNAMICS_H_
+
+#include <lsp-plug.in/dsp/common/types.h>
+
+#include <lsp-plug.in/dsp/common/dynamics/types.h>
+#include <lsp-plug.in/dsp/common/dynamics/compressor.h>
+
+
+#endif /* LSP_PLUG_IN_DSP_COMMON_DYNAMICS_H_ */

include/lsp-plug.in/dsp/common/dynamics/compressor.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
+ *           (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
+ *
+ * This file is part of lsp-dsp-lib
+ * Created on: 5 окт. 2023 г.
+ *
+ * lsp-dsp-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * lsp-dsp-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LSP_PLUG_IN_DSP_COMMON_DYNAMICS_COMPRESSOR_H_
+#define LSP_PLUG_IN_DSP_COMMON_DYNAMICS_COMPRESSOR_H_
+
+#include <lsp-plug.in/dsp/common/types.h>
+#include <lsp-plug.in/dsp/common/dynamics/types.h>
+
+LSP_DSP_LIB_SYMBOL(void, compressor_x2_gain, float *dst, const float *src, const LSP_DSP_LIB_TYPE(compressor_x2_t) *c, size_t count);
+
+LSP_DSP_LIB_SYMBOL(void, compressor_x2_curve, float *dst, const float *src, const LSP_DSP_LIB_TYPE(compressor_x2_t) *c, size_t count);
+
+#endif /* LSP_PLUG_IN_DSP_COMMON_DYNAMICS_COMPRESSOR_H_ */

include/lsp-plug.in/dsp/common/dynamics/types.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
+ *           (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
+ *
+ * This file is part of lsp-dsp-lib
+ * Created on: 5 окт. 2023 г.
+ *
+ * lsp-dsp-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * lsp-dsp-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LSP_PLUG_IN_DSP_COMMON_DYNAMICS_TYPES_H_
+#define LSP_PLUG_IN_DSP_COMMON_DYNAMICS_TYPES_H_
+
+#include <lsp-plug.in/dsp/common/types.h>
+
+LSP_DSP_LIB_BEGIN_NAMESPACE
+
+#pragma pack(push, 1)
+
+/**
+ * Compressor knee is a curve that constists of three parts:
+ *   1. Part with constant gain amplification in the range [-inf .. start] dB
+ *   2. Soft compression knee in the range (start .. end) dB present by the quadratic function (2nd-order polynom)
+ *   3. Gain reduction part in the range [end .. +inf] dB present by the linear function (1st-order polynom)
+ *
+ * The typical algorithm of computing the compressor's curve:
+ *   1. Take absolute value of the sample: x = fabfs(in)
+ *   2. If x <= start then return gain*x
+ *   3. Compute the natural logarithm of the x: lx = logf(x).
+ *   4. If x < end then compute the gain using the 2nd-order polynom: gain = (herm[0]*lx + herm[1])*lx + herm[2]
+ *   5. Otherwise compute the gain using the 1st-order polynom: gain = tilt[0]*lx + tilt[1]
+ *   6. return expf(gain)
+ */
+typedef struct LSP_DSP_LIB_TYPE(compressor_knee_t)
+{
+    float       start;          // The start of the knee, in gain units
+    float       end;            // The end of the knee, in gain units
+    float       gain;           // Pre-amplification gain
+    float       herm[3];        // Hermite interpolation of the knee with the 2nd-order polynom
+    float       tilt[2];        // Tilt line parameters after the knee
+} LSP_DSP_LIB_TYPE(compressor_knee_t);
+
+
+/**
+ * Two-knee compressor.
+ * The result gain/curve is a result of multiplication of gain/curve between both knees.
+ */
+typedef struct LSP_DSP_LIB_TYPE(compressor_x2_t)
+{
+    LSP_DSP_LIB_TYPE(compressor_knee_t)   k[2];
+} LSP_DSP_LIB_TYPE(compressor_x2_t);
+
+#pragma pack(pop)
+
+LSP_DSP_LIB_END_NAMESPACE
+
+#endif /* LSP_PLUG_IN_DSP_COMMON_DYNAMICS_TYPES_H_ */

include/lsp-plug.in/dsp/common/graphics.h

@@ -53,6 +53,16 @@ typedef struct LSP_DSP_LIB_TYPE(hsla_light_eff_t)
 
 LSP_DSP_LIB_END_NAMESPACE
 
+/** Do linear vector apply for 1D-schema:
+ *  x[i] = x[i] + norm_x * (v[i] + zero)
+ *
+ * @param x destination vector for X coordinate
+ * @param v delta vector to apply
+ * @param zero graphics zero point shift
+ * @param norm X norming factor
+ */
+LSP_DSP_LIB_SYMBOL(void, axis_apply_lin1, float *x, const float *v, float zero, float norm, size_t count);
+
 /** Do logarithmic vector apply for 1D-schema:
  *  x[i] = x[i] + norm_x * logf(absf(v[i]*zero))
  *

include/lsp-plug.in/dsp/common/pcomplex.h

@@ -117,14 +117,6 @@ LSP_DSP_LIB_SYMBOL(void, pcomplex_r2c, float *dst, const float *src, size_t coun
  */
 LSP_DSP_LIB_SYMBOL(void, pcomplex_c2r, float *dst, const float *src, size_t count);
 
-/** Convert packed complex to real and add to destination buffer
- *
- * @param dst destination real data
- * @param src source packed complex data
- * @param count number of items to convert
- */
-LSP_DSP_LIB_SYMBOL(void, pcomplex_add_r, float *dst, const float *src, size_t count);
-
 /** Get module for complex numbers: mod = sqrt(re*re + im*im)
  *
  * @param dst_mod array to sore module

include/lsp-plug.in/dsp/common/pmath.h

@@ -35,5 +35,7 @@
 #include <lsp-plug.in/dsp/common/pmath/op_kx.h>
 #include <lsp-plug.in/dsp/common/pmath/op_vv.h>
 #include <lsp-plug.in/dsp/common/pmath/pow.h>
+#include <lsp-plug.in/dsp/common/pmath/sqr.h>
+#include <lsp-plug.in/dsp/common/pmath/sqrt.h>
 
 #endif /* LSP_PLUG_IN_DSP_COMMON_PMATH_H_ */

include/lsp-plug.in/dsp/common/pmath/sqr.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
+ *           (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
+ *
+ * This file is part of lsp-dsp-lib
+ * Created on: 20 сент. 2023 г.
+ *
+ * lsp-dsp-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * lsp-dsp-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LSP_PLUG_IN_DSP_COMMON_PMATH_SQR_H_
+#define LSP_PLUG_IN_DSP_COMMON_PMATH_SQR_H_
+
+#include <lsp-plug.in/dsp/common/types.h>
+
+/**
+ * Compute squares: dst[i] = dst[i]*dst[i]
+ * @param dst destination
+ * @param count number of elements to process
+ */
+LSP_DSP_LIB_SYMBOL(void, sqr1, float *dst, size_t count);
+
+/**
+ * Compute squares: dst[i] = src[i]*src[i]
+ * @param dst destination
+ * @param src source
+ * @param count number of elements in source
+ */
+LSP_DSP_LIB_SYMBOL(void, sqr2, float *dst, const float *src, size_t count);
+
+
+
+#endif /* LSP_PLUG_IN_DSP_COMMON_PMATH_SQR_H_ */

include/lsp-plug.in/dsp/common/pmath/sqrt.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2023 Linux Studio Plugins Project <https://lsp-plug.in/>
+ *           (C) 2023 Vladimir Sadovnikov <sadko4u@gmail.com>
+ *
+ * This file is part of lsp-dsp-lib
+ * Created on: 20 сент. 2023 г.
+ *
+ * lsp-dsp-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * lsp-dsp-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LSP_PLUG_IN_DSP_COMMON_PMATH_SQRT_H_
+#define LSP_PLUG_IN_DSP_COMMON_PMATH_SQRT_H_
+
+#include <lsp-plug.in/dsp/common/types.h>
+
+/**
+ * Compute saturated square roots: dst[i] = sqrt(max(dst[i], 0))
+ * @param dst destination
+ * @param count number of elements to process
+ */
+LSP_DSP_LIB_SYMBOL(void, ssqrt1, float *dst, size_t count);
+
+/**
+ * Compute saturated square roots: dst[i] = sqrt(max(src[i], 0))
+ * @param dst destination
+ * @param src source
+ * @param count number of elements in source
+ */
+LSP_DSP_LIB_SYMBOL(void, ssqrt2, float *dst, const float *src, size_t count);
+
+
+
+#endif /* LSP_PLUG_IN_DSP_COMMON_PMATH_SQRT_H_ */

include/lsp-plug.in/dsp/common/types.h

@@ -30,11 +30,16 @@
 #include <limits.h>
 
 // Macro definitions
-#define LSP_DSP_VEC2(v)     v, v
-#define LSP_DSP_VEC4(v)     v, v, v, v
-#define LSP_DSP_VEC8(v)     v, v, v, v, v, v, v, v
-#define LSP_DSP_VEC16(v)    v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v
-#define LSP_DSP_VEC32(v)    v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v, v
+#define LSP_DSP_VEC2(v)                     v, v
+#define LSP_DSP_VEC4(v)                     LSP_DSP_VEC2(v), LSP_DSP_VEC2(v)
+#define LSP_DSP_VEC8(v)                     LSP_DSP_VEC4(v), LSP_DSP_VEC4(v)
+#define LSP_DSP_VEC16(v)                    LSP_DSP_VEC8(v), LSP_DSP_VEC8(v)
+#define LSP_DSP_VEC32(v)                    LSP_DSP_VEC16(v), LSP_DSP_VEC16(v)
+
+#define LSP_DSP_VEC2x2(a, b)                a, b, a, b
+#define LSP_DSP_VEC4x2(a, b)                LSP_DSP_VEC2x2(a, b), LSP_DSP_VEC2x2(a, b)
+#define LSP_DSP_VEC8x2(a, b)                LSP_DSP_VEC4x2(a, b), LSP_DSP_VEC4x2(a, b)
+#define LSP_DSP_VEC16x2(a, b)               LSP_DSP_VEC8x2(a, b), LSP_DSP_VEC8x2(a, b)
 
 // Different constants
 #define LSP_DSP_AMPLIFICATION_THRESH        1e-8