Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 64 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/window32_w32.c b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
new file mode 100644
index 0000000000..e82d167220
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/window32_w32.c
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+/******************************************************************
+
+ iLBC Speech Coder ANSI-C Source Code
+
+ WebRtcIlbcfix_Window32W32.c
+
+******************************************************************/
+
+#include "modules/audio_coding/codecs/ilbc/window32_w32.h"
+
+#include "modules/audio_coding/codecs/ilbc/defines.h"
+
+/*----------------------------------------------------------------*
+ *  window multiplication
+ *---------------------------------------------------------------*/
+
+void WebRtcIlbcfix_Window32W32(
+    int32_t *z,    /* Output */
+    int32_t *x,    /* Input (same domain as Output)*/
+    const int32_t  *y,  /* Q31 Window */
+    size_t N     /* length to process */
+                               ) {
+  size_t i;
+  int16_t x_low, x_hi, y_low, y_hi;
+  int16_t left_shifts;
+  int32_t temp;
+
+  left_shifts = (int16_t)WebRtcSpl_NormW32(x[0]);
+  WebRtcSpl_VectorBitShiftW32(x, N, x, (int16_t)(-left_shifts));
+
+
+  /* The double precision numbers use a special representation:
+   * w32 = hi<<16 + lo<<1
+   */
+  for (i = 0; i < N; i++) {
+    /* Extract higher bytes */
+    x_hi = (int16_t)(x[i] >> 16);
+    y_hi = (int16_t)(y[i] >> 16);
+
+    /* Extract lower bytes, defined as (w32 - hi<<16)>>1 */
+    x_low = (int16_t)((x[i] - (x_hi << 16)) >> 1);
+
+    y_low = (int16_t)((y[i] - (y_hi << 16)) >> 1);
+
+    /* Calculate z by a 32 bit multiplication using both low and high from x and y */
+    temp = ((x_hi * y_hi) << 1) + ((x_hi * y_low) >> 14);
+
+    z[i] = temp + ((x_low * y_hi) >> 14);
+  }
+
+  WebRtcSpl_VectorBitShiftW32(z, N, z, left_shifts);
+
+  return;
+}