diff options
Diffstat (limited to 'third_party/libwebrtc/modules/audio_coding/codecs/pcm16b/pcm16b.c')
-rw-r--r-- | third_party/libwebrtc/modules/audio_coding/codecs/pcm16b/pcm16b.c | 32 |
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; +} |