1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/celt/celt.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,218 @@
1.4 +/* Copyright (c) 2007-2008 CSIRO
1.5 + Copyright (c) 2007-2009 Xiph.Org Foundation
1.6 + Copyright (c) 2008 Gregory Maxwell
1.7 + Written by Jean-Marc Valin and Gregory Maxwell */
1.8 +/**
1.9 + @file celt.h
1.10 + @brief Contains all the functions for encoding and decoding audio
1.11 + */
1.12 +
1.13 +/*
1.14 + Redistribution and use in source and binary forms, with or without
1.15 + modification, are permitted provided that the following conditions
1.16 + are met:
1.17 +
1.18 + - Redistributions of source code must retain the above copyright
1.19 + notice, this list of conditions and the following disclaimer.
1.20 +
1.21 + - Redistributions in binary form must reproduce the above copyright
1.22 + notice, this list of conditions and the following disclaimer in the
1.23 + documentation and/or other materials provided with the distribution.
1.24 +
1.25 + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.26 + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.27 + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.28 + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
1.29 + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.30 + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.31 + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.32 + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.33 + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.34 + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.35 + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.36 +*/
1.37 +
1.38 +#ifndef CELT_H
1.39 +#define CELT_H
1.40 +
1.41 +#include "opus_types.h"
1.42 +#include "opus_defines.h"
1.43 +#include "opus_custom.h"
1.44 +#include "entenc.h"
1.45 +#include "entdec.h"
1.46 +#include "arch.h"
1.47 +
1.48 +#ifdef __cplusplus
1.49 +extern "C" {
1.50 +#endif
1.51 +
1.52 +#define CELTEncoder OpusCustomEncoder
1.53 +#define CELTDecoder OpusCustomDecoder
1.54 +#define CELTMode OpusCustomMode
1.55 +
1.56 +typedef struct {
1.57 + int valid;
1.58 + float tonality;
1.59 + float tonality_slope;
1.60 + float noisiness;
1.61 + float activity;
1.62 + float music_prob;
1.63 + int bandwidth;
1.64 +}AnalysisInfo;
1.65 +
1.66 +#define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
1.67 +
1.68 +#define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
1.69 +
1.70 +/* Encoder/decoder Requests */
1.71 +
1.72 +/* Expose this option again when variable framesize actually works */
1.73 +#define OPUS_FRAMESIZE_VARIABLE 5010 /**< Optimize the frame size dynamically */
1.74 +
1.75 +
1.76 +#define CELT_SET_PREDICTION_REQUEST 10002
1.77 +/** Controls the use of interframe prediction.
1.78 + 0=Independent frames
1.79 + 1=Short term interframe prediction allowed
1.80 + 2=Long term prediction allowed
1.81 + */
1.82 +#define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x)
1.83 +
1.84 +#define CELT_SET_INPUT_CLIPPING_REQUEST 10004
1.85 +#define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x)
1.86 +
1.87 +#define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007
1.88 +#define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x)
1.89 +
1.90 +#define CELT_SET_CHANNELS_REQUEST 10008
1.91 +#define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x)
1.92 +
1.93 +
1.94 +/* Internal */
1.95 +#define CELT_SET_START_BAND_REQUEST 10010
1.96 +#define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x)
1.97 +
1.98 +#define CELT_SET_END_BAND_REQUEST 10012
1.99 +#define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x)
1.100 +
1.101 +#define CELT_GET_MODE_REQUEST 10015
1.102 +/** Get the CELTMode used by an encoder or decoder */
1.103 +#define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x)
1.104 +
1.105 +#define CELT_SET_SIGNALLING_REQUEST 10016
1.106 +#define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x)
1.107 +
1.108 +#define CELT_SET_TONALITY_REQUEST 10018
1.109 +#define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x)
1.110 +#define CELT_SET_TONALITY_SLOPE_REQUEST 10020
1.111 +#define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x)
1.112 +
1.113 +#define CELT_SET_ANALYSIS_REQUEST 10022
1.114 +#define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x)
1.115 +
1.116 +#define OPUS_SET_LFE_REQUEST 10024
1.117 +#define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
1.118 +
1.119 +#define OPUS_SET_ENERGY_MASK_REQUEST 10026
1.120 +#define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
1.121 +
1.122 +/* Encoder stuff */
1.123 +
1.124 +int celt_encoder_get_size(int channels);
1.125 +
1.126 +int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
1.127 +
1.128 +int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
1.129 + int arch);
1.130 +
1.131 +
1.132 +
1.133 +/* Decoder stuff */
1.134 +
1.135 +int celt_decoder_get_size(int channels);
1.136 +
1.137 +
1.138 +int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels);
1.139 +
1.140 +int celt_decode_with_ec(OpusCustomDecoder * OPUS_RESTRICT st, const unsigned char *data, int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec);
1.141 +
1.142 +#define celt_encoder_ctl opus_custom_encoder_ctl
1.143 +#define celt_decoder_ctl opus_custom_decoder_ctl
1.144 +
1.145 +
1.146 +#ifdef CUSTOM_MODES
1.147 +#define OPUS_CUSTOM_NOSTATIC
1.148 +#else
1.149 +#define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE
1.150 +#endif
1.151 +
1.152 +static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0};
1.153 +/* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */
1.154 +static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
1.155 +
1.156 +static const unsigned char tapset_icdf[3]={2,1,0};
1.157 +
1.158 +#ifdef CUSTOM_MODES
1.159 +static const unsigned char toOpusTable[20] = {
1.160 + 0xE0, 0xE8, 0xF0, 0xF8,
1.161 + 0xC0, 0xC8, 0xD0, 0xD8,
1.162 + 0xA0, 0xA8, 0xB0, 0xB8,
1.163 + 0x00, 0x00, 0x00, 0x00,
1.164 + 0x80, 0x88, 0x90, 0x98,
1.165 +};
1.166 +
1.167 +static const unsigned char fromOpusTable[16] = {
1.168 + 0x80, 0x88, 0x90, 0x98,
1.169 + 0x40, 0x48, 0x50, 0x58,
1.170 + 0x20, 0x28, 0x30, 0x38,
1.171 + 0x00, 0x08, 0x10, 0x18
1.172 +};
1.173 +
1.174 +static OPUS_INLINE int toOpus(unsigned char c)
1.175 +{
1.176 + int ret=0;
1.177 + if (c<0xA0)
1.178 + ret = toOpusTable[c>>3];
1.179 + if (ret == 0)
1.180 + return -1;
1.181 + else
1.182 + return ret|(c&0x7);
1.183 +}
1.184 +
1.185 +static OPUS_INLINE int fromOpus(unsigned char c)
1.186 +{
1.187 + if (c<0x80)
1.188 + return -1;
1.189 + else
1.190 + return fromOpusTable[(c>>3)-16] | (c&0x7);
1.191 +}
1.192 +#endif /* CUSTOM_MODES */
1.193 +
1.194 +#define COMBFILTER_MAXPERIOD 1024
1.195 +#define COMBFILTER_MINPERIOD 15
1.196 +
1.197 +extern const signed char tf_select_table[4][8];
1.198 +
1.199 +int resampling_factor(opus_int32 rate);
1.200 +
1.201 +void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
1.202 + int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip);
1.203 +
1.204 +void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
1.205 + opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
1.206 + const opus_val16 *window, int overlap);
1.207 +
1.208 +void init_caps(const CELTMode *m,int *cap,int LM,int C);
1.209 +
1.210 +#ifdef RESYNTH
1.211 +void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef, celt_sig *mem, celt_sig * OPUS_RESTRICT scratch);
1.212 +
1.213 +void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X,
1.214 + celt_sig * OPUS_RESTRICT out_mem[], int C, int LM);
1.215 +#endif
1.216 +
1.217 +#ifdef __cplusplus
1.218 +}
1.219 +#endif
1.220 +
1.221 +#endif /* CELT_H */
