webrtc/modules/audio_coding/codecs/cng/include/webrtc_cng.h - Issue 1438663003: modules/audio_coding: Remove some codec include dirs

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Issue 1438663003: modules/audio_coding: Remove some codec include dirs (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master

Patch Set: Rebase again Created 5 years, 1 month ago

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1 /*

2 * Copyright (c) 2012 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

12 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INCLUDE_WEBRTC_CNG_H_

13 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INCLUDE_WEBRTC_CNG_H_

14

15 #include <stddef.h>

16 #include "webrtc/typedefs.h"

17

18 #ifdef __cplusplus

19 extern "C" {

20 #endif

21

22 #define WEBRTC_CNG_MAX_LPC_ORDER 12

23 #define WEBRTC_CNG_MAX_OUTSIZE_ORDER 640

24

25 /* Define Error codes. */

26

27 /* 6100 Encoder */

28 #define CNG_ENCODER_NOT_INITIATED 6120

29 #define CNG_DISALLOWED_LPC_ORDER 6130

30 #define CNG_DISALLOWED_FRAME_SIZE 6140

31 #define CNG_DISALLOWED_SAMPLING_FREQUENCY 6150

32 /* 6200 Decoder */

33 #define CNG_DECODER_NOT_INITIATED 6220

34

35 typedef struct WebRtcCngEncInst CNG_enc_inst;

36 typedef struct WebRtcCngDecInst CNG_dec_inst;

37

38 /****************************************************************************

39 * WebRtcCng_CreateEnc/Dec(...)

40 *

41 * These functions create an instance to the specified structure

42 *

43 * Input:

44 * - XXX_inst : Pointer to created instance that should be created

45 *

46 * Return value : 0 - Ok

47 * -1 - Error

48 */

49 int16_t WebRtcCng_CreateEnc(CNG_enc_inst** cng_inst);

50 int16_t WebRtcCng_CreateDec(CNG_dec_inst** cng_inst);

51

52 /****************************************************************************

53 * WebRtcCng_InitEnc/Dec(...)

54 *

55 * This function initializes a instance

56 *

57 * Input:

58 * - cng_inst : Instance that should be initialized

59 *

60 * - fs : 8000 for narrowband and 16000 for wideband

61 * - interval : generate SID data every interval ms

62 * - quality : Number of refl. coefs, maximum allowed is 12

63 *

64 * Output:

65 * - cng_inst : Initialized instance

66 *

67 * Return value : 0 - Ok

68 * -1 - Error

69 */

70

71 int WebRtcCng_InitEnc(CNG_enc_inst* cng_inst, int fs, int16_t interval,

72 int16_t quality);

73 void WebRtcCng_InitDec(CNG_dec_inst* cng_inst);

74

75 /****************************************************************************

76 * WebRtcCng_FreeEnc/Dec(...)

77 *

78 * These functions frees the dynamic memory of a specified instance

79 *

80 * Input:

81 * - cng_inst : Pointer to created instance that should be freed

82 *

83 * Return value : 0 - Ok

84 * -1 - Error

85 */

86 int16_t WebRtcCng_FreeEnc(CNG_enc_inst* cng_inst);

87 int16_t WebRtcCng_FreeDec(CNG_dec_inst* cng_inst);

88

89 /****************************************************************************

90 * WebRtcCng_Encode(...)

91 *

92 * These functions analyzes background noise

93 *

94 * Input:

95 * - cng_inst : Pointer to created instance

96 * - speech : Signal to be analyzed

97 * - nrOfSamples : Size of speech vector

98 * - forceSID : not zero to force SID frame and reset

99 *

100 * Output:

101 * - bytesOut : Nr of bytes to transmit, might be 0

102 *

103 * Return value : 0 - Ok

104 * -1 - Error

105 */

106 int WebRtcCng_Encode(CNG_enc_inst* cng_inst, int16_t* speech,

107 size_t nrOfSamples, uint8_t* SIDdata,

108 size_t* bytesOut, int16_t forceSID);

109

110 /****************************************************************************

111 * WebRtcCng_UpdateSid(...)

112 *

113 * These functions updates the CN state, when a new SID packet arrives

114 *

115 * Input:

116 * - cng_inst : Pointer to created instance that should be freed

117 * - SID : SID packet, all headers removed

118 * - length : Length in bytes of SID packet

119 *

120 * Return value : 0 - Ok

121 * -1 - Error

122 */

123 int16_t WebRtcCng_UpdateSid(CNG_dec_inst* cng_inst, uint8_t* SID,

124 size_t length);

125

126 /****************************************************************************

127 * WebRtcCng_Generate(...)

128 *

129 * These functions generates CN data when needed

130 *

131 * Input:

132 * - cng_inst : Pointer to created instance that should be freed

133 * - outData : pointer to area to write CN data

134 * - nrOfSamples : How much data to generate

135 * - new_period : >0 if a new period of CNG, will reset history

136 *

137 * Return value : 0 - Ok

138 * -1 - Error

139 */

140 int16_t WebRtcCng_Generate(CNG_dec_inst* cng_inst, int16_t* outData,

141 size_t nrOfSamples, int16_t new_period);

142

143 /*****************************************************************************

144 * WebRtcCng_GetErrorCodeEnc/Dec(...)

145 *

146 * This functions can be used to check the error code of a CNG instance. When

147 * a function returns -1 a error code will be set for that instance. The

148 * function below extract the code of the last error that occurred in the

149 * specified instance.

150 *

151 * Input:

152 * - CNG_inst : CNG enc/dec instance

153 *

154 * Return value : Error code

155 */

156 int16_t WebRtcCng_GetErrorCodeEnc(CNG_enc_inst* cng_inst);

157 int16_t WebRtcCng_GetErrorCodeDec(CNG_dec_inst* cng_inst);

158

159 #ifdef __cplusplus

160 }

161 #endif

162

163 #endif // WEBRTC_MODULES_AUDIO_CODING_CODECS_CNG_MAIN_INCLUDE_WEBRTC_CNG_H_

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