1 files changed, 32 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_coding/codecs/pcm16b/pcm16b.c b/third_party/libwebrtc/modules/audio_coding/codecs/pcm16b/pcm16b.c
new file mode 100644
index 0000000000..2f6dce5f41
--- /dev/null
+++ b/third_party/libwebrtc/modules/audio_coding/codecs/pcm16b/pcm16b.c
@@ -0,0 +1,32 @@
+/*
+ *  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.
+ */
+
+#include "modules/audio_coding/codecs/pcm16b/pcm16b.h"
+
+size_t WebRtcPcm16b_Encode(const int16_t* speech,
+                           size_t len,
+                           uint8_t* encoded) {
+  size_t i;
+  for (i = 0; i < len; ++i) {
+    uint16_t s = speech[i];
+    encoded[2 * i] = s >> 8;
+    encoded[2 * i + 1] = s;
+  }
+  return 2 * len;
+}
+
+size_t WebRtcPcm16b_Decode(const uint8_t* encoded,
+                           size_t len,
+                           int16_t* speech) {
+  size_t i;
+  for (i = 0; i < len / 2; ++i)
+    speech[i] = encoded[2 * i] << 8 | encoded[2 * i + 1];
+  return len / 2;
+}