Create local copy of Opus v1.1.2

webrtc/modules/audio_coding/codecs/opus/opus/src/celt/tests/test_unit_rotation.c

Index: webrtc/modules/audio_coding/codecs/opus/opus/src/celt/tests/test_unit_rotation.c
diff --git a/webrtc/modules/audio_coding/codecs/opus/opus/src/celt/tests/test_unit_rotation.c b/webrtc/modules/audio_coding/codecs/opus/opus/src/celt/tests/test_unit_rotation.c
new file mode 100644
index 0000000000000000000000000000000000000000..1080c2085d02c5c975fd0f5ef9dd832303ad9e45
--- /dev/null
+++ b/webrtc/modules/audio_coding/codecs/opus/opus/src/celt/tests/test_unit_rotation.c
@@ -0,0 +1,120 @@
+/* Copyright (c) 2008-2011 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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef CUSTOM_MODES
+#define CUSTOM_MODES
+#endif
+
+#define CELT_C
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "vq.c"
+#include "cwrs.c"
+#include "entcode.c"
+#include "entenc.c"
+#include "entdec.c"
+#include "mathops.c"
+#include "bands.h"
+#include "pitch.c"
+#include "celt_lpc.c"
+#include "celt.c"
+#include <math.h>
+
+#if defined(OPUS_X86_MAY_HAVE_SSE) || defined(OPUS_X86_MAY_HAVE_SSE2) || defined(OPUS_X86_MAY_HAVE_SSE4_1)
+# if defined(OPUS_X86_MAY_HAVE_SSE)
+#  include "x86/pitch_sse.c"
+# endif
+# if defined(OPUS_X86_MAY_HAVE_SSE2)
+#  include "x86/pitch_sse2.c"
+# endif
+# if defined(OPUS_X86_MAY_HAVE_SSE4_1)
+#  include "x86/pitch_sse4_1.c"
+#  include "x86/celt_lpc_sse.c"
+# endif
+# include "x86/x86_celt_map.c"
+#elif defined(OPUS_ARM_ASM) || defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+# include "arm/armcpu.c"
+# if defined(OPUS_ARM_MAY_HAVE_NEON_INTR)
+#  include "arm/celt_neon_intr.c"
+#  if defined(HAVE_ARM_NE10)
+#   include "kiss_fft.c"
+#   include "mdct.c"
+#   include "arm/celt_ne10_fft.c"
+#   include "arm/celt_ne10_mdct.c"
+#  endif
+# endif
+# include "arm/arm_celt_map.c"
+#endif
+
+#define MAX_SIZE 100
+
+int ret=0;
+void test_rotation(int N, int K)
+{
+   int i;
+   double err = 0, ener = 0, snr, snr0;
+   opus_val16 x0[MAX_SIZE];
+   opus_val16 x1[MAX_SIZE];
+   for (i=0;i<N;i++)
+      x1[i] = x0[i] = rand()%32767-16384;
+   exp_rotation(x1, N, 1, 1, K, SPREAD_NORMAL);
+   for (i=0;i<N;i++)
+   {
+      err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]);
+      ener += x0[i]*(double)x0[i];
+   }
+   snr0 = 20*log10(ener/err);
+   err = ener = 0;
+   exp_rotation(x1, N, -1, 1, K, SPREAD_NORMAL);
+   for (i=0;i<N;i++)
+   {
+      err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]);
+      ener += x0[i]*(double)x0[i];
+   }
+   snr = 20*log10(ener/err);
+   printf ("SNR for size %d (%d pulses) is %f (was %f without inverse)\n", N, K, snr, snr0);
+   if (snr < 60 || snr0 > 20)
+   {
+      fprintf(stderr, "FAIL!\n");
+      ret = 1;
+   }
+}
+
+int main(void)
+{
+   ALLOC_STACK;
+   test_rotation(15, 3);
+   test_rotation(23, 5);
+   test_rotation(50, 3);
+   test_rotation(80, 1);
+   return ret;
+}