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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  * 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