| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| /* |
| * codec.h |
| * |
| * This header file contains the calls to the internal encoder |
| * and decoder functions. |
| * |
| */ |
| |
| #ifndef MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ |
| #define MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ |
| |
| #include <stddef.h> |
| |
| #include "modules/audio_coding/codecs/isac/main/source/structs.h" |
| |
| void WebRtcIsac_ResetBitstream(Bitstr* bit_stream); |
| |
| int WebRtcIsac_EstimateBandwidth(BwEstimatorstr* bwest_str, Bitstr* streamdata, |
| size_t packet_size, |
| uint16_t rtp_seq_number, |
| uint32_t send_ts, uint32_t arr_ts, |
| enum IsacSamplingRate encoderSampRate, |
| enum IsacSamplingRate decoderSampRate); |
| |
| int WebRtcIsac_DecodeLb(const TransformTables* transform_tables, |
| float* signal_out, |
| ISACLBDecStruct* ISACdec_obj, |
| int16_t* current_framesamples, |
| int16_t isRCUPayload); |
| |
| int WebRtcIsac_DecodeRcuLb(float* signal_out, ISACLBDecStruct* ISACdec_obj, |
| int16_t* current_framesamples); |
| |
| int WebRtcIsac_EncodeLb(const TransformTables* transform_tables, |
| float* in, |
| ISACLBEncStruct* ISACencLB_obj, |
| int16_t codingMode, |
| int16_t bottleneckIndex); |
| |
| int WebRtcIsac_EncodeStoredDataLb(const IsacSaveEncoderData* ISACSavedEnc_obj, |
| Bitstr* ISACBitStr_obj, int BWnumber, |
| float scale); |
| |
| int WebRtcIsac_EncodeStoredDataUb( |
| const ISACUBSaveEncDataStruct* ISACSavedEnc_obj, Bitstr* bitStream, |
| int32_t jitterInfo, float scale, enum ISACBandwidth bandwidth); |
| |
| int16_t WebRtcIsac_GetRedPayloadUb( |
| const ISACUBSaveEncDataStruct* ISACSavedEncObj, Bitstr* bitStreamObj, |
| enum ISACBandwidth bandwidth); |
| |
| /****************************************************************************** |
| * WebRtcIsac_RateAllocation() |
| * Internal function to perform a rate-allocation for upper and lower-band, |
| * given a total rate. |
| * |
| * Input: |
| * - inRateBitPerSec : a total bit-rate in bits/sec. |
| * |
| * Output: |
| * - rateLBBitPerSec : a bit-rate allocated to the lower-band |
| * in bits/sec. |
| * - rateUBBitPerSec : a bit-rate allocated to the upper-band |
| * in bits/sec. |
| * |
| * Return value : 0 if rate allocation has been successful. |
| * -1 if failed to allocate rates. |
| */ |
| |
| int16_t WebRtcIsac_RateAllocation(int32_t inRateBitPerSec, |
| double* rateLBBitPerSec, |
| double* rateUBBitPerSec, |
| enum ISACBandwidth* bandwidthKHz); |
| |
| |
| /****************************************************************************** |
| * WebRtcIsac_DecodeUb16() |
| * |
| * Decode the upper-band if the codec is in 0-16 kHz mode. |
| * |
| * Input/Output: |
| * -ISACdec_obj : pointer to the upper-band decoder object. The |
| * bit-stream is stored inside the decoder object. |
| * |
| * Output: |
| * -signal_out : decoded audio, 480 samples 30 ms. |
| * |
| * Return value : >0 number of decoded bytes. |
| * <0 if an error occurred. |
| */ |
| int WebRtcIsac_DecodeUb16(const TransformTables* transform_tables, |
| float* signal_out, |
| ISACUBDecStruct* ISACdec_obj, |
| int16_t isRCUPayload); |
| |
| /****************************************************************************** |
| * WebRtcIsac_DecodeUb12() |
| * |
| * Decode the upper-band if the codec is in 0-12 kHz mode. |
| * |
| * Input/Output: |
| * -ISACdec_obj : pointer to the upper-band decoder object. The |
| * bit-stream is stored inside the decoder object. |
| * |
| * Output: |
| * -signal_out : decoded audio, 480 samples 30 ms. |
| * |
| * Return value : >0 number of decoded bytes. |
| * <0 if an error occurred. |
| */ |
| int WebRtcIsac_DecodeUb12(const TransformTables* transform_tables, |
| float* signal_out, |
| ISACUBDecStruct* ISACdec_obj, |
| int16_t isRCUPayload); |
| |
| /****************************************************************************** |
| * WebRtcIsac_EncodeUb16() |
| * |
| * Encode the upper-band if the codec is in 0-16 kHz mode. |
| * |
| * Input: |
| * -in : upper-band audio, 160 samples (10 ms). |
| * |
| * Input/Output: |
| * -ISACdec_obj : pointer to the upper-band encoder object. The |
| * bit-stream is stored inside the encoder object. |
| * |
| * Return value : >0 number of encoded bytes. |
| * <0 if an error occurred. |
| */ |
| int WebRtcIsac_EncodeUb16(const TransformTables* transform_tables, |
| float* in, |
| ISACUBEncStruct* ISACenc_obj, |
| int32_t jitterInfo); |
| |
| /****************************************************************************** |
| * WebRtcIsac_EncodeUb12() |
| * |
| * Encode the upper-band if the codec is in 0-12 kHz mode. |
| * |
| * Input: |
| * -in : upper-band audio, 160 samples (10 ms). |
| * |
| * Input/Output: |
| * -ISACdec_obj : pointer to the upper-band encoder object. The |
| * bit-stream is stored inside the encoder object. |
| * |
| * Return value : >0 number of encoded bytes. |
| * <0 if an error occurred. |
| */ |
| int WebRtcIsac_EncodeUb12(const TransformTables* transform_tables, |
| float* in, |
| ISACUBEncStruct* ISACenc_obj, |
| int32_t jitterInfo); |
| |
| /************************** initialization functions *************************/ |
| |
| void WebRtcIsac_InitMasking(MaskFiltstr* maskdata); |
| |
| void WebRtcIsac_InitPostFilterbank(PostFiltBankstr* postfiltdata); |
| |
| |
| /**************************** transform functions ****************************/ |
| |
| void WebRtcIsac_InitTransform(TransformTables* tables); |
| |
| void WebRtcIsac_Time2Spec(const TransformTables* tables, |
| double* inre1, |
| double* inre2, |
| int16_t* outre, |
| int16_t* outim, |
| FFTstr* fftstr_obj); |
| |
| void WebRtcIsac_Spec2time(const TransformTables* tables, |
| double* inre, |
| double* inim, |
| double* outre1, |
| double* outre2, |
| FFTstr* fftstr_obj); |
| |
| /***************************** filterbank functions **************************/ |
| |
| void WebRtcIsac_FilterAndCombineFloat(float* InLP, float* InHP, float* Out, |
| PostFiltBankstr* postfiltdata); |
| |
| |
| /************************* normalized lattice filters ************************/ |
| |
| void WebRtcIsac_NormLatticeFilterMa(int orderCoef, float* stateF, float* stateG, |
| float* lat_in, double* filtcoeflo, |
| double* lat_out); |
| |
| void WebRtcIsac_NormLatticeFilterAr(int orderCoef, float* stateF, float* stateG, |
| double* lat_in, double* lo_filt_coef, |
| float* lat_out); |
| |
| void WebRtcIsac_Dir2Lat(double* a, int orderCoef, float* sth, float* cth); |
| |
| #endif /* MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_CODEC_H_ */ |