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  * lpc_masking_model.h
13  *
14  * LPC functions
15  *
16  */
17 
18 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_MASKING_MODEL_H_
19 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_MASKING_MODEL_H_
20 
21 #ifdef __cplusplus
22 extern "C" {
23 #endif
24 
25 #include "structs.h"
26 
27 void WebRtcIsacfix_GetVars(const WebRtc_Word16 *input,
28                            const WebRtc_Word16 *pitchGains_Q12,
29                            WebRtc_UWord32 *oldEnergy,
30                            WebRtc_Word16 *varscale);
31 
32 void WebRtcIsacfix_GetLpcCoef(WebRtc_Word16 *inLoQ0,
33                               WebRtc_Word16 *inHiQ0,
34                               MaskFiltstr_enc *maskdata,
35                               WebRtc_Word16 snrQ10,
36                               const WebRtc_Word16 *pitchGains_Q12,
37                               WebRtc_Word32 *gain_lo_hiQ17,
38                               WebRtc_Word16 *lo_coeffQ15,
39                               WebRtc_Word16 *hi_coeffQ15);
40 
41 typedef int32_t (*CalculateResidualEnergy)(int lpc_order,
42                                            int32_t q_val_corr,
43                                            int q_val_polynomial,
44                                            int16_t* a_polynomial,
45                                            int32_t* corr_coeffs,
46                                            int* q_val_residual_energy);
47 extern CalculateResidualEnergy WebRtcIsacfix_CalculateResidualEnergy;
48 
49 int32_t WebRtcIsacfix_CalculateResidualEnergyC(int lpc_order,
50                                                int32_t q_val_corr,
51                                                int q_val_polynomial,
52                                                int16_t* a_polynomial,
53                                                int32_t* corr_coeffs,
54                                                int* q_val_residual_energy);
55 
56 #if (defined WEBRTC_DETECT_ARM_NEON) || (defined WEBRTC_ARCH_ARM_NEON)
57 int32_t WebRtcIsacfix_CalculateResidualEnergyNeon(int lpc_order,
58                                                   int32_t q_val_corr,
59                                                   int q_val_polynomial,
60                                                   int16_t* a_polynomial,
61                                                   int32_t* corr_coeffs,
62                                                   int* q_val_residual_energy);
63 #endif
64 
65 #ifdef __cplusplus
66 } /* extern "C" */
67 #endif
68 
69 #endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_LPC_MASKING_MODEL_H_ */
70