Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 471 insertions, 0 deletions

diff --git a/media/ffvpx/libavutil/libm.h b/media/ffvpx/libavutil/libm.h
new file mode 100644
index 0000000000..a819962391
--- /dev/null
+++ b/media/ffvpx/libavutil/libm.h
@@ -0,0 +1,471 @@
+/*
+ * erf function: Copyright (c) 2006 John Maddock
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Replacements for frequently missing libm functions
+ */
+
+#ifndef AVUTIL_LIBM_H
+#define AVUTIL_LIBM_H
+
+#include <math.h>
+#include "config.h"
+#include "attributes.h"
+#include "intfloat.h"
+#include "mathematics.h"
+
+#if HAVE_MIPSFPU && HAVE_INLINE_ASM
+#include "libavutil/mips/libm_mips.h"
+#endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM*/
+
+#if !HAVE_ATANF
+#undef atanf
+#define atanf(x) ((float)atan(x))
+#endif /* HAVE_ATANF */
+
+#if !HAVE_ATAN2F
+#undef atan2f
+#define atan2f(y, x) ((float)atan2(y, x))
+#endif /* HAVE_ATAN2F */
+
+#if !HAVE_POWF
+#undef powf
+#define powf(x, y) ((float)pow(x, y))
+#endif /* HAVE_POWF */
+
+#if !HAVE_CBRT
+static av_always_inline double cbrt(double x)
+{
+    return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0);
+}
+#endif /* HAVE_CBRT */
+
+#if !HAVE_CBRTF
+static av_always_inline float cbrtf(float x)
+{
+    return x < 0 ? -powf(-x, 1.0 / 3.0) : powf(x, 1.0 / 3.0);
+}
+#endif /* HAVE_CBRTF */
+
+#if !HAVE_COPYSIGN
+static av_always_inline double copysign(double x, double y)
+{
+    uint64_t vx = av_double2int(x);
+    uint64_t vy = av_double2int(y);
+    return av_int2double((vx & UINT64_C(0x7fffffffffffffff)) | (vy & UINT64_C(0x8000000000000000)));
+}
+#endif /* HAVE_COPYSIGN */
+
+#if !HAVE_COSF
+#undef cosf
+#define cosf(x) ((float)cos(x))
+#endif /* HAVE_COSF */
+
+#if !HAVE_ERF
+static inline double ff_eval_poly(const double *coeff, int size, double x) {
+    double sum = coeff[size-1];
+    int i;
+    for (i = size-2; i >= 0; --i) {
+        sum *= x;
+        sum += coeff[i];
+    }
+    return sum;
+}
+
+/**
+ * erf function
+ * Algorithm taken from the Boost project, source:
+ * http://www.boost.org/doc/libs/1_46_1/boost/math/special_functions/erf.hpp
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0 (see notice below).
+ * Boost Software License - Version 1.0 - August 17th, 2003
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+ */
+static inline double erf(double z)
+{
+#ifndef FF_ARRAY_ELEMS
+#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
+#endif
+    double result;
+
+    /* handle the symmetry: erf(-x) = -erf(x) */
+    if (z < 0)
+        return -erf(-z);
+
+    /* branch based on range of z, and pick appropriate approximation */
+    if (z == 0)
+        return 0;
+    else if (z < 1e-10)
+        return z * 1.125 + z * 0.003379167095512573896158903121545171688;
+    else if (z < 0.5) {
+        // Maximum Deviation Found:                     1.561e-17
+        // Expected Error Term:                         1.561e-17
+        // Maximum Relative Change in Control Points:   1.155e-04
+        // Max Error found at double precision =        2.961182e-17
+
+        static const double y = 1.044948577880859375;
+        static const double p[] = {
+            0.0834305892146531832907,
+            -0.338165134459360935041,
+            -0.0509990735146777432841,
+            -0.00772758345802133288487,
+            -0.000322780120964605683831,
+        };
+        static const double q[] = {
+            1,
+            0.455004033050794024546,
+            0.0875222600142252549554,
+            0.00858571925074406212772,
+            0.000370900071787748000569,
+        };
+        double zz = z * z;
+        return z * (y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), zz) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), zz));
+    }
+    /* here onwards compute erfc */
+    else if (z < 1.5) {
+        // Maximum Deviation Found:                     3.702e-17
+        // Expected Error Term:                         3.702e-17
+        // Maximum Relative Change in Control Points:   2.845e-04
+        // Max Error found at double precision =        4.841816e-17
+        static const double y = 0.405935764312744140625;
+        static const double p[] = {
+            -0.098090592216281240205,
+            0.178114665841120341155,
+            0.191003695796775433986,
+            0.0888900368967884466578,
+            0.0195049001251218801359,
+            0.00180424538297014223957,
+        };
+        static const double q[] = {
+            1,
+            1.84759070983002217845,
+            1.42628004845511324508,
+            0.578052804889902404909,
+            0.12385097467900864233,
+            0.0113385233577001411017,
+            0.337511472483094676155e-5,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 0.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 0.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    else if (z < 2.5) {
+        // Max Error found at double precision =        6.599585e-18
+        // Maximum Deviation Found:                     3.909e-18
+        // Expected Error Term:                         3.909e-18
+        // Maximum Relative Change in Control Points:   9.886e-05
+        static const double y = 0.50672817230224609375;
+        static const double p[] = {
+            -0.0243500476207698441272,
+            0.0386540375035707201728,
+            0.04394818964209516296,
+            0.0175679436311802092299,
+            0.00323962406290842133584,
+            0.000235839115596880717416,
+        };
+        static const double q[] = {
+            1,
+            1.53991494948552447182,
+            0.982403709157920235114,
+            0.325732924782444448493,
+            0.0563921837420478160373,
+            0.00410369723978904575884,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 1.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 1.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    else if (z < 4.5) {
+        // Maximum Deviation Found:                     1.512e-17
+        // Expected Error Term:                         1.512e-17
+        // Maximum Relative Change in Control Points:   2.222e-04
+        // Max Error found at double precision =        2.062515e-17
+        static const double y = 0.5405750274658203125;
+        static const double p[] = {
+            0.00295276716530971662634,
+            0.0137384425896355332126,
+            0.00840807615555585383007,
+            0.00212825620914618649141,
+            0.000250269961544794627958,
+            0.113212406648847561139e-4,
+        };
+        static const double q[] = {
+            1,
+            1.04217814166938418171,
+            0.442597659481563127003,
+            0.0958492726301061423444,
+            0.0105982906484876531489,
+            0.000479411269521714493907,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 3.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 3.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    /* differ from Boost here, the claim of underflow of erfc(x) past 5.8 is
+     * slightly incorrect, change to 5.92
+     * (really somewhere between 5.9125 and 5.925 is when it saturates) */
+    else if (z < 5.92) {
+        // Max Error found at double precision =        2.997958e-17
+        // Maximum Deviation Found:                     2.860e-17
+        // Expected Error Term:                         2.859e-17
+        // Maximum Relative Change in Control Points:   1.357e-05
+        static const double y = 0.5579090118408203125;
+        static const double p[] = {
+            0.00628057170626964891937,
+            0.0175389834052493308818,
+            -0.212652252872804219852,
+            -0.687717681153649930619,
+            -2.5518551727311523996,
+            -3.22729451764143718517,
+            -2.8175401114513378771,
+        };
+        static const double q[] = {
+            1,
+            2.79257750980575282228,
+            11.0567237927800161565,
+            15.930646027911794143,
+            22.9367376522880577224,
+            13.5064170191802889145,
+            5.48409182238641741584,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), 1 / z) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), 1 / z);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    /* handle the nan case, but don't use isnan for max portability */
+    else if (z != z)
+        return z;
+    /* finally return saturated result */
+    else
+        return 1;
+}
+#endif /* HAVE_ERF */
+
+#if !HAVE_EXPF
+#undef expf
+#define expf(x) ((float)exp(x))
+#endif /* HAVE_EXPF */
+
+#if !HAVE_EXP2
+#undef exp2
+#define exp2(x) exp((x) * M_LN2)
+#endif /* HAVE_EXP2 */
+
+#if !HAVE_EXP2F
+#undef exp2f
+#define exp2f(x) ((float)exp2(x))
+#endif /* HAVE_EXP2F */
+
+#if !HAVE_ISINF
+#undef isinf
+/* Note: these do not follow the BSD/Apple/GNU convention of returning -1 for
+-Inf, +1 for Inf, 0 otherwise, but merely follow the POSIX/ISO mandated spec of
+returning a non-zero value for +/-Inf, 0 otherwise. */
+static av_always_inline av_const int avpriv_isinff(float x)
+{
+    uint32_t v = av_float2int(x);
+    if ((v & 0x7f800000) != 0x7f800000)
+        return 0;
+    return !(v & 0x007fffff);
+}
+
+static av_always_inline av_const int avpriv_isinf(double x)
+{
+    uint64_t v = av_double2int(x);
+    if ((v & 0x7ff0000000000000) != 0x7ff0000000000000)
+        return 0;
+    return !(v & 0x000fffffffffffff);
+}
+
+#define isinf(x)                  \
+    (sizeof(x) == sizeof(float)   \
+        ? avpriv_isinff(x)        \
+        : avpriv_isinf(x))
+#endif /* HAVE_ISINF */
+
+#if !HAVE_ISNAN
+static av_always_inline av_const int avpriv_isnanf(float x)
+{
+    uint32_t v = av_float2int(x);
+    if ((v & 0x7f800000) != 0x7f800000)
+        return 0;
+    return v & 0x007fffff;
+}
+
+static av_always_inline av_const int avpriv_isnan(double x)
+{
+    uint64_t v = av_double2int(x);
+    if ((v & 0x7ff0000000000000) != 0x7ff0000000000000)
+        return 0;
+    return (v & 0x000fffffffffffff) && 1;
+}
+
+#define isnan(x)                  \
+    (sizeof(x) == sizeof(float)   \
+        ? avpriv_isnanf(x)        \
+        : avpriv_isnan(x))
+#endif /* HAVE_ISNAN */
+
+#if !HAVE_ISFINITE
+static av_always_inline av_const int avpriv_isfinitef(float x)
+{
+    uint32_t v = av_float2int(x);
+    return (v & 0x7f800000) != 0x7f800000;
+}
+
+static av_always_inline av_const int avpriv_isfinite(double x)
+{
+    uint64_t v = av_double2int(x);
+    return (v & 0x7ff0000000000000) != 0x7ff0000000000000;
+}
+
+#define isfinite(x)                  \
+    (sizeof(x) == sizeof(float)      \
+        ? avpriv_isfinitef(x)        \
+        : avpriv_isfinite(x))
+#endif /* HAVE_ISFINITE */
+
+#if !HAVE_HYPOT
+static inline av_const double hypot(double x, double y)
+{
+    double ret, temp;
+    x = fabs(x);
+    y = fabs(y);
+
+    if (isinf(x) || isinf(y))
+        return av_int2double(0x7ff0000000000000);
+    if (x == 0 || y == 0)
+        return x + y;
+    if (x < y) {
+        temp = x;
+        x = y;
+        y = temp;
+    }
+
+    y = y/x;
+    return x*sqrt(1 + y*y);
+}
+#endif /* HAVE_HYPOT */
+
+#if !HAVE_LDEXPF
+#undef ldexpf
+#define ldexpf(x, exp) ((float)ldexp(x, exp))
+#endif /* HAVE_LDEXPF */
+
+#if !HAVE_LLRINT
+#undef llrint
+#define llrint(x) ((long long)rint(x))
+#endif /* HAVE_LLRINT */
+
+#if !HAVE_LLRINTF
+#undef llrintf
+#define llrintf(x) ((long long)rint(x))
+#endif /* HAVE_LLRINT */
+
+#if !HAVE_LOG2
+#undef log2
+#define log2(x) (log(x) * 1.44269504088896340736)
+#endif /* HAVE_LOG2 */
+
+#if !HAVE_LOG2F
+#undef log2f
+#define log2f(x) ((float)log2(x))
+#endif /* HAVE_LOG2F */
+
+#if !HAVE_LOG10F
+#undef log10f
+#define log10f(x) ((float)log10(x))
+#endif /* HAVE_LOG10F */
+
+#if !HAVE_SINF
+#undef sinf
+#define sinf(x) ((float)sin(x))
+#endif /* HAVE_SINF */
+
+#if !HAVE_RINT
+static inline double rint(double x)
+{
+    return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_RINT */
+
+#if !HAVE_LRINT
+static av_always_inline av_const long int lrint(double x)
+{
+    return rint(x);
+}
+#endif /* HAVE_LRINT */
+
+#if !HAVE_LRINTF
+static av_always_inline av_const long int lrintf(float x)
+{
+    return (int)(rint(x));
+}
+#endif /* HAVE_LRINTF */
+
+#if !HAVE_ROUND
+static av_always_inline av_const double round(double x)
+{
+    return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_ROUND */
+
+#if !HAVE_ROUNDF
+static av_always_inline av_const float roundf(float x)
+{
+    return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_ROUNDF */
+
+#if !HAVE_TRUNC
+static av_always_inline av_const double trunc(double x)
+{
+    return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNC */
+
+#if !HAVE_TRUNCF
+static av_always_inline av_const float truncf(float x)
+{
+    return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNCF */
+
+#endif /* AVUTIL_LIBM_H */