- initial import

src/libs/webrtc/neteq/mix_voice_unvoice.c

@@ -0,0 +1,41 @@
+/*
+ *  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.
+ */
+
+/*
+ * This function mixes a voiced signal with an unvoiced signal and
+ * updates the weight on a sample by sample basis.
+ */
+
+#include "dsp_helpfunctions.h"
+
+#include "signal_processing_library.h"
+
+void WebRtcNetEQ_MixVoiceUnvoice(WebRtc_Word16 *pw16_outData, WebRtc_Word16 *pw16_voicedVec,
+                                 WebRtc_Word16 *pw16_unvoicedVec,
+                                 WebRtc_Word16 *w16_current_vfraction,
+                                 WebRtc_Word16 w16_vfraction_change, WebRtc_Word16 N)
+{
+    int i;
+    WebRtc_Word16 w16_tmp2;
+    WebRtc_Word16 vfraction = *w16_current_vfraction;
+
+    w16_tmp2 = 16384 - vfraction;
+    for (i = 0; i < N; i++)
+    {
+        pw16_outData[i] = (WebRtc_Word16) WEBRTC_SPL_RSHIFT_W32(
+            WEBRTC_SPL_MUL_16_16(vfraction, pw16_voicedVec[i]) +
+            WEBRTC_SPL_MUL_16_16(w16_tmp2, pw16_unvoicedVec[i]) + 8192,
+            14);
+        vfraction -= w16_vfraction_change;
+        w16_tmp2 += w16_vfraction_change;
+    }
+    *w16_current_vfraction = vfraction;
+}
+