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Diffstat (limited to 'webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h')
-rw-r--r-- | webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h b/webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h new file mode 100644 index 0000000000..f96e741c46 --- /dev/null +++ b/webrtc/modules/audio_coding/codecs/pcm16b/pcm16b.h @@ -0,0 +1,68 @@ +/* + * 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. + */ + +#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_ +#define WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_ +/* + * Define the fixpoint numeric formats + */ + +#include <stddef.h> + +#include "webrtc/typedefs.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/**************************************************************************** + * WebRtcPcm16b_Encode(...) + * + * "Encode" a sample vector to 16 bit linear (Encoded standard is big endian) + * + * Input: + * - speech : Input speech vector + * - len : Number of samples in speech vector + * + * Output: + * - encoded : Encoded data vector (big endian 16 bit) + * + * Returned value : Length (in bytes) of coded data. + * Always equal to twice the len input parameter. + */ + +size_t WebRtcPcm16b_Encode(const int16_t* speech, + size_t len, + uint8_t* encoded); + +/**************************************************************************** + * WebRtcPcm16b_Decode(...) + * + * "Decode" a vector to 16 bit linear (Encoded standard is big endian) + * + * Input: + * - encoded : Encoded data vector (big endian 16 bit) + * - len : Number of bytes in encoded + * + * Output: + * - speech : Decoded speech vector + * + * Returned value : Samples in speech + */ + +size_t WebRtcPcm16b_Decode(const uint8_t* encoded, + size_t len, + int16_t* speech); + +#ifdef __cplusplus +} +#endif + +#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_PCM16B_H_ */ |