1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_MAIN_INTERFACE_PCM16B_H_ 12 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_PCM16B_MAIN_INTERFACE_PCM16B_H_ 13 /* 14 * Define the fixpoint numeric formats 15 */ 16 17 #include "typedefs.h" 18 19 #ifdef __cplusplus 20 extern "C" { 21 #endif 22 23 /**************************************************************************** 24 * WebRtcPcm16b_EncodeW16(...) 25 * 26 * "Encode" a sample vector to 16 bit linear (Encoded standard is big endian) 27 * 28 * Input: 29 * - speechIn16b : Input speech vector 30 * - len : Number of samples in speech vector 31 * 32 * Output: 33 * - speechOut16b : Encoded data vector (big endian 16 bit) 34 * 35 * Returned value : Size in bytes of speechOut16b 36 */ 37 38 int16_t WebRtcPcm16b_EncodeW16(int16_t *speechIn16b, 39 int16_t len, 40 int16_t *speechOut16b); 41 42 /**************************************************************************** 43 * WebRtcPcm16b_Encode(...) 44 * 45 * "Encode" a sample vector to 16 bit linear (Encoded standard is big endian) 46 * 47 * Input: 48 * - speech16b : Input speech vector 49 * - len : Number of samples in speech vector 50 * 51 * Output: 52 * - speech8b : Encoded data vector (big endian 16 bit) 53 * 54 * Returned value : Size in bytes of speech8b 55 */ 56 57 int16_t WebRtcPcm16b_Encode(int16_t *speech16b, 58 int16_t len, 59 unsigned char *speech8b); 60 61 /**************************************************************************** 62 * WebRtcPcm16b_DecodeW16(...) 63 * 64 * "Decode" a vector to 16 bit linear (Encoded standard is big endian) 65 * 66 * Input: 67 * - speechIn16b : Encoded data vector (big endian 16 bit) 68 * - len : Number of bytes in speechIn16b 69 * 70 * Output: 71 * - speechOut16b : Decoded speech vector 72 * 73 * Returned value : Samples in speechOut16b 74 */ 75 76 int16_t WebRtcPcm16b_DecodeW16(void *inst, 77 int16_t *speechIn16b, 78 int16_t len, 79 int16_t *speechOut16b, 80 int16_t* speechType); 81 82 /**************************************************************************** 83 * WebRtcPcm16b_Decode(...) 84 * 85 * "Decode" a vector to 16 bit linear (Encoded standard is big endian) 86 * 87 * Input: 88 * - speech8b : Encoded data vector (big endian 16 bit) 89 * - len : Number of bytes in speech8b 90 * 91 * Output: 92 * - speech16b : Decoded speech vector 93 * 94 * Returned value : Samples in speech16b 95 */ 96 97 98 int16_t WebRtcPcm16b_Decode(unsigned char *speech8b, 99 int16_t len, 100 int16_t *speech16b); 101 102 #ifdef __cplusplus 103 } 104 #endif 105 106 #endif /* PCM16B */ 107