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64 lines
2.9 KiB
C
64 lines
2.9 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* arith_routines.h
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*
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* Functions for arithmetic coding.
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*
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*/
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#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
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#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_
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#include "structs.h"
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int WebRtcIsac_EncLogisticMulti2(
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Bitstr *streamdata, /* in-/output struct containing bitstream */
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WebRtc_Word16 *dataQ7, /* input: data vector */
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const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */
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const int N, /* input: data vector length */
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const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
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/* returns the number of bytes in the stream */
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int WebRtcIsac_EncTerminate(Bitstr *streamdata); /* in-/output struct containing bitstream */
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/* returns the number of bytes in the stream so far */
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int WebRtcIsac_DecLogisticMulti2(
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WebRtc_Word16 *data, /* output: data vector */
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Bitstr *streamdata, /* in-/output struct containing bitstream */
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const WebRtc_UWord16 *env, /* input: side info vector defining the width of the pdf */
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const WebRtc_Word16 *dither, /* input: dither vector */
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const int N, /* input: data vector length */
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const WebRtc_Word16 isSWB12kHz); /* if the codec is working in 12kHz bandwidth */
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void WebRtcIsac_EncHistMulti(
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Bitstr *streamdata, /* in-/output struct containing bitstream */
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const int *data, /* input: data vector */
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const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */
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const int N); /* input: data vector length */
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int WebRtcIsac_DecHistBisectMulti(
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int *data, /* output: data vector */
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Bitstr *streamdata, /* in-/output struct containing bitstream */
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const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */
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const WebRtc_UWord16 *cdf_size, /* input: array of cdf table sizes+1 (power of two: 2^k) */
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const int N); /* input: data vector length */
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int WebRtcIsac_DecHistOneStepMulti(
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int *data, /* output: data vector */
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Bitstr *streamdata, /* in-/output struct containing bitstream */
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const WebRtc_UWord16 **cdf, /* input: array of cdf arrays */
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const WebRtc_UWord16 *init_index,/* input: vector of initial cdf table search entries */
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const int N); /* input: data vector length */
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#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ARITH_ROUTINES_H_ */
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