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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c')
-rw-r--r--third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c
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index 0000000000..83144150b4
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+++ b/third_party/libwebrtc/modules/audio_coding/codecs/ilbc/index_conv_enc.c
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+/******************************************************************
+
+ IiLBC Speech Coder ANSI-C Source Code
+
+ WebRtcIlbcfix_IndexConvEnc.c
+
+******************************************************************/
+
+#include "modules/audio_coding/codecs/ilbc/index_conv_enc.h"
+
+#include "modules/audio_coding/codecs/ilbc/defines.h"
+
+/*----------------------------------------------------------------*
+ * Convert the codebook indexes to make the search easier
+ *---------------------------------------------------------------*/
+
+void WebRtcIlbcfix_IndexConvEnc(
+ int16_t *index /* (i/o) Codebook indexes */
+ ){
+ int k;
+
+ for (k=4;k<6;k++) {
+ /* Readjust the second and third codebook index so that it is
+ packetized into 7 bits (before it was put in lag-wise the same
+ way as for the first codebook which uses 8 bits)
+ */
+ if ((index[k]>=108)&&(index[k]<172)) {
+ index[k]-=64;
+ } else if (index[k]>=236) {
+ index[k]-=128;
+ } else {
+ /* ERROR */
+ }
+ }
+}