Smart Remote 3 nRF52 v1.2
celt.h
1 /* Copyright (c) 2007-2008 CSIRO
2  Copyright (c) 2007-2009 Xiph.Org Foundation
3  Copyright (c) 2008 Gregory Maxwell
4  Written by Jean-Marc Valin and Gregory Maxwell */
10 /*
11  Redistribution and use in source and binary forms, with or without
12  modification, are permitted provided that the following conditions
13  are met:
14 
15  - Redistributions of source code must retain the above copyright
16  notice, this list of conditions and the following disclaimer.
17 
18  - Redistributions in binary form must reproduce the above copyright
19  notice, this list of conditions and the following disclaimer in the
20  documentation and/or other materials provided with the distribution.
21 
22  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
26  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 
35 #ifndef CELT_H
36 #define CELT_H
37 
38 #include "opus_types.h"
39 #include "opus_defines.h"
40 #include "opus_custom.h"
41 #include "entenc.h"
42 #include "entdec.h"
43 #include "arch.h"
44 
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48 
49 #define CELTEncoder OpusCustomEncoder
50 #define CELTDecoder OpusCustomDecoder
51 #define CELTMode OpusCustomMode
52 
53 #define LEAK_BANDS 19
54 
55 typedef struct {
56  int valid;
57  float tonality;
58  float tonality_slope;
59  float noisiness;
60  float activity;
61  float music_prob;
62  float vad_prob;
63  int bandwidth;
64  float activity_probability;
65  /* Store as Q6 char to save space. */
66  unsigned char leak_boost[LEAK_BANDS];
67 } AnalysisInfo;
68 
69 typedef struct {
70  int signalType;
71  int offset;
72 } SILKInfo;
73 
74 #define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
75 
76 #define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
77 
78 #define __celt_check_silkinfo_ptr(ptr) ((ptr) + ((ptr) - (const SILKInfo*)(ptr)))
79 
80 /* Encoder/decoder Requests */
81 
82 
83 #define CELT_SET_PREDICTION_REQUEST 10002
84 
89 #define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x)
90 
91 #define CELT_SET_INPUT_CLIPPING_REQUEST 10004
92 #define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x)
93 
94 #define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007
95 #define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x)
96 
97 #define CELT_SET_CHANNELS_REQUEST 10008
98 #define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x)
99 
100 
101 /* Internal */
102 #define CELT_SET_START_BAND_REQUEST 10010
103 #define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x)
104 
105 #define CELT_SET_END_BAND_REQUEST 10012
106 #define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x)
107 
108 #define CELT_GET_MODE_REQUEST 10015
109 
110 #define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x)
111 
112 #define CELT_SET_SIGNALLING_REQUEST 10016
113 #define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x)
114 
115 #define CELT_SET_TONALITY_REQUEST 10018
116 #define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x)
117 #define CELT_SET_TONALITY_SLOPE_REQUEST 10020
118 #define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x)
119 
120 #define CELT_SET_ANALYSIS_REQUEST 10022
121 #define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x)
122 
123 #define OPUS_SET_LFE_REQUEST 10024
124 #define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
125 
126 #define OPUS_SET_ENERGY_MASK_REQUEST 10026
127 #define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
128 
129 #define CELT_SET_SILK_INFO_REQUEST 10028
130 #define CELT_SET_SILK_INFO(x) CELT_SET_SILK_INFO_REQUEST, __celt_check_silkinfo_ptr(x)
131 
132 /* Encoder stuff */
133 
134 int celt_encoder_get_size(int channels);
135 
136 int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
137 
138 int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
139  int arch);
140 
141 
142 
143 /* Decoder stuff */
144 
145 int celt_decoder_get_size(int channels);
146 
147 
148 int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels);
149 
150 int celt_decode_with_ec(OpusCustomDecoder * OPUS_RESTRICT st, const unsigned char *data,
151  int len, opus_val16 * OPUS_RESTRICT pcm, int frame_size, ec_dec *dec, int accum);
152 
153 #define celt_encoder_ctl opus_custom_encoder_ctl
154 #define celt_decoder_ctl opus_custom_decoder_ctl
155 
156 
157 #ifdef CUSTOM_MODES
158 #define OPUS_CUSTOM_NOSTATIC
159 #else
160 #define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE
161 #endif
162 
163 static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0};
164 /* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */
165 static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
166 
167 static const unsigned char tapset_icdf[3]={2,1,0};
168 
169 #ifdef CUSTOM_MODES
170 static const unsigned char toOpusTable[20] = {
171  0xE0, 0xE8, 0xF0, 0xF8,
172  0xC0, 0xC8, 0xD0, 0xD8,
173  0xA0, 0xA8, 0xB0, 0xB8,
174  0x00, 0x00, 0x00, 0x00,
175  0x80, 0x88, 0x90, 0x98,
176 };
177 
178 static const unsigned char fromOpusTable[16] = {
179  0x80, 0x88, 0x90, 0x98,
180  0x40, 0x48, 0x50, 0x58,
181  0x20, 0x28, 0x30, 0x38,
182  0x00, 0x08, 0x10, 0x18
183 };
184 
185 static OPUS_INLINE int toOpus(unsigned char c)
186 {
187  int ret=0;
188  if (c<0xA0)
189  ret = toOpusTable[c>>3];
190  if (ret == 0)
191  return -1;
192  else
193  return ret|(c&0x7);
194 }
195 
196 static OPUS_INLINE int fromOpus(unsigned char c)
197 {
198  if (c<0x80)
199  return -1;
200  else
201  return fromOpusTable[(c>>3)-16] | (c&0x7);
202 }
203 #endif /* CUSTOM_MODES */
204 
205 #define COMBFILTER_MAXPERIOD 1024
206 #define COMBFILTER_MINPERIOD 15
207 
208 extern const signed char tf_select_table[4][8];
209 
210 int resampling_factor(opus_int32 rate);
211 
212 void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
213  int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip);
214 
215 void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
216  opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
217  const opus_val16 *window, int overlap, int arch);
218 
219 #ifdef NON_STATIC_COMB_FILTER_CONST_C
220 void comb_filter_const_c(opus_val32 *y, opus_val32 *x, int T, int N,
221  opus_val16 g10, opus_val16 g11, opus_val16 g12);
222 #endif
223 
224 #ifndef OVERRIDE_COMB_FILTER_CONST
225 # define comb_filter_const(y, x, T, N, g10, g11, g12, arch) \
226  ((void)(arch),comb_filter_const_c(y, x, T, N, g10, g11, g12))
227 #endif
228 
229 void init_caps(const CELTMode *m,int *cap,int LM,int C);
230 
231 #ifdef RESYNTH
232 void deemphasis(celt_sig *in[], opus_val16 *pcm, int N, int C, int downsample, const opus_val16 *coef, celt_sig *mem);
233 void celt_synthesis(const CELTMode *mode, celt_norm *X, celt_sig * out_syn[],
234  opus_val16 *oldBandE, int start, int effEnd, int C, int CC, int isTransient,
235  int LM, int downsample, int silence);
236 #endif
237 
238 #ifdef __cplusplus
239 }
240 #endif
241 
242 #endif /* CELT_H */
Documentation feedback | Developer Zone | Subscribe | Updated