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a12c42a6b2
Usage replaced with stdint.h, rtc_base/system/arch.h and rtc_base/system/unused.h, as appropriate. Bug: webrtc:6854 Change-Id: I97225465d14b969903d92979e2df3c3c05d35f18 Reviewed-on: https://webrtc-review.googlesource.com/90249 Reviewed-by: Niklas Enbom <niklas.enbom@webrtc.org> Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24100}
135 lines
4.2 KiB
C
135 lines
4.2 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_CODING_CODECS_G711_G711_INTERFACE_H_
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#define MODULES_AUDIO_CODING_CODECS_G711_G711_INTERFACE_H_
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#include <stdint.h>
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// Comfort noise constants
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#define G711_WEBRTC_SPEECH 1
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#define G711_WEBRTC_CNG 2
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#ifdef __cplusplus
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extern "C" {
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#endif
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/****************************************************************************
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* WebRtcG711_EncodeA(...)
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*
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* This function encodes a G711 A-law frame and inserts it into a packet.
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* Input speech length has be of any length.
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*
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* Input:
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* - speechIn : Input speech vector
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* - len : Samples in speechIn
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*
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* Output:
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* - encoded : The encoded data vector
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*
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* Return value : Length (in bytes) of coded data.
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* Always equal to len input parameter.
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*/
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size_t WebRtcG711_EncodeA(const int16_t* speechIn,
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size_t len,
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uint8_t* encoded);
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/****************************************************************************
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* WebRtcG711_EncodeU(...)
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*
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* This function encodes a G711 U-law frame and inserts it into a packet.
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* Input speech length has be of any length.
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*
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* Input:
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* - speechIn : Input speech vector
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* - len : Samples in speechIn
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*
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* Output:
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* - encoded : The encoded data vector
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*
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* Return value : Length (in bytes) of coded data.
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* Always equal to len input parameter.
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*/
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size_t WebRtcG711_EncodeU(const int16_t* speechIn,
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size_t len,
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uint8_t* encoded);
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/****************************************************************************
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* WebRtcG711_DecodeA(...)
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*
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* This function decodes a packet G711 A-law frame.
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*
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* Input:
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* - encoded : Encoded data
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* - len : Bytes in encoded vector
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*
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* Output:
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* - decoded : The decoded vector
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* - speechType : 1 normal, 2 CNG (for G711 it should
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* always return 1 since G711 does not have a
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* built-in DTX/CNG scheme)
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*
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* Return value : >0 - Samples in decoded vector
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* -1 - Error
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*/
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size_t WebRtcG711_DecodeA(const uint8_t* encoded,
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size_t len,
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int16_t* decoded,
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int16_t* speechType);
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/****************************************************************************
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* WebRtcG711_DecodeU(...)
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*
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* This function decodes a packet G711 U-law frame.
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*
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* Input:
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* - encoded : Encoded data
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* - len : Bytes in encoded vector
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*
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* Output:
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* - decoded : The decoded vector
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* - speechType : 1 normal, 2 CNG (for G711 it should
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* always return 1 since G711 does not have a
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* built-in DTX/CNG scheme)
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*
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* Return value : >0 - Samples in decoded vector
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* -1 - Error
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*/
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size_t WebRtcG711_DecodeU(const uint8_t* encoded,
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size_t len,
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int16_t* decoded,
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int16_t* speechType);
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/**********************************************************************
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* WebRtcG711_Version(...)
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*
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* This function gives the version string of the G.711 codec.
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*
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* Input:
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* - lenBytes: the size of Allocated space (in Bytes) where
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* the version number is written to (in string format).
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*
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* Output:
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* - version: Pointer to a buffer where the version number is
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* written to.
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*
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*/
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int16_t WebRtcG711_Version(char* version, int16_t lenBytes);
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#ifdef __cplusplus
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}
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#endif
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#endif // MODULES_AUDIO_CODING_CODECS_G711_G711_INTERFACE_H_
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