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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /media/ffvpx/libavutil/float_dsp.c
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'media/ffvpx/libavutil/float_dsp.c')
-rw-r--r--media/ffvpx/libavutil/float_dsp.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/float_dsp.c b/media/ffvpx/libavutil/float_dsp.c
new file mode 100644
index 000000000..c85daffc6
--- /dev/null
+++ b/media/ffvpx/libavutil/float_dsp.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2005 Balatoni Denes
+ * Copyright 2006 Loren Merritt
+ *
+ * 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
+ */
+
+#include "config.h"
+#include "attributes.h"
+#include "float_dsp.h"
+#include "mem.h"
+
+static void vector_fmul_c(float *dst, const float *src0, const float *src1,
+ int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ dst[i] = src0[i] * src1[i];
+}
+
+static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
+ int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ dst[i] += src[i] * mul;
+}
+
+static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
+ int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ dst[i] = src[i] * mul;
+}
+
+static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
+ int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ dst[i] = src[i] * mul;
+}
+
+static void vector_fmul_window_c(float *dst, const float *src0,
+ const float *src1, const float *win, int len)
+{
+ int i, j;
+
+ dst += len;
+ win += len;
+ src0 += len;
+
+ for (i = -len, j = len - 1; i < 0; i++, j--) {
+ float s0 = src0[i];
+ float s1 = src1[j];
+ float wi = win[i];
+ float wj = win[j];
+ dst[i] = s0 * wj - s1 * wi;
+ dst[j] = s0 * wi + s1 * wj;
+ }
+}
+
+static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
+ const float *src2, int len){
+ int i;
+
+ for (i = 0; i < len; i++)
+ dst[i] = src0[i] * src1[i] + src2[i];
+}
+
+static void vector_fmul_reverse_c(float *dst, const float *src0,
+ const float *src1, int len)
+{
+ int i;
+
+ src1 += len-1;
+ for (i = 0; i < len; i++)
+ dst[i] = src0[i] * src1[-i];
+}
+
+static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2,
+ int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++) {
+ float t = v1[i] - v2[i];
+ v1[i] += v2[i];
+ v2[i] = t;
+ }
+}
+
+float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
+{
+ float p = 0.0;
+ int i;
+
+ for (i = 0; i < len; i++)
+ p += v1[i] * v2[i];
+
+ return p;
+}
+
+av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact)
+{
+ AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext));
+ if (!fdsp)
+ return NULL;
+
+ fdsp->vector_fmul = vector_fmul_c;
+ fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
+ fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
+ fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
+ fdsp->vector_fmul_window = vector_fmul_window_c;
+ fdsp->vector_fmul_add = vector_fmul_add_c;
+ fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
+ fdsp->butterflies_float = butterflies_float_c;
+ fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
+
+ if (ARCH_AARCH64)
+ ff_float_dsp_init_aarch64(fdsp);
+ if (ARCH_ARM)
+ ff_float_dsp_init_arm(fdsp);
+ if (ARCH_PPC)
+ ff_float_dsp_init_ppc(fdsp, bit_exact);
+ if (ARCH_X86)
+ ff_float_dsp_init_x86(fdsp);
+ if (ARCH_MIPS)
+ ff_float_dsp_init_mips(fdsp);
+ return fdsp;
+}