media/libopus/celt/celt.h@ac0c01689b40
media/libopus/celt/celt.h
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
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 */
5 /**
6 @file celt.h
7 @brief Contains all the functions for encoding and decoding audio
8 */
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:
15 - Redistributions of source code must retain the above copyright
16 notice, this list of conditions and the following disclaimer.
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.
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 */
35 #ifndef CELT_H
36 #define CELT_H
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"
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
49 #define CELTEncoder OpusCustomEncoder
50 #define CELTDecoder OpusCustomDecoder
51 #define CELTMode OpusCustomMode
53 typedef struct {
54 int valid;
55 float tonality;
56 float tonality_slope;
57 float noisiness;
58 float activity;
59 float music_prob;
60 int bandwidth;
61 }AnalysisInfo;
63 #define __celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
65 #define __celt_check_analysis_ptr(ptr) ((ptr) + ((ptr) - (const AnalysisInfo*)(ptr)))
67 /* Encoder/decoder Requests */
69 /* Expose this option again when variable framesize actually works */
70 #define OPUS_FRAMESIZE_VARIABLE 5010 /**< Optimize the frame size dynamically */
73 #define CELT_SET_PREDICTION_REQUEST 10002
74 /** Controls the use of interframe prediction.
75 0=Independent frames
76 1=Short term interframe prediction allowed
77 2=Long term prediction allowed
78 */
79 #define CELT_SET_PREDICTION(x) CELT_SET_PREDICTION_REQUEST, __opus_check_int(x)
81 #define CELT_SET_INPUT_CLIPPING_REQUEST 10004
82 #define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, __opus_check_int(x)
84 #define CELT_GET_AND_CLEAR_ERROR_REQUEST 10007
85 #define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, __opus_check_int_ptr(x)
87 #define CELT_SET_CHANNELS_REQUEST 10008
88 #define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, __opus_check_int(x)
91 /* Internal */
92 #define CELT_SET_START_BAND_REQUEST 10010
93 #define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, __opus_check_int(x)
95 #define CELT_SET_END_BAND_REQUEST 10012
96 #define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, __opus_check_int(x)
98 #define CELT_GET_MODE_REQUEST 10015
99 /** Get the CELTMode used by an encoder or decoder */
100 #define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, __celt_check_mode_ptr_ptr(x)
102 #define CELT_SET_SIGNALLING_REQUEST 10016
103 #define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, __opus_check_int(x)
105 #define CELT_SET_TONALITY_REQUEST 10018
106 #define CELT_SET_TONALITY(x) CELT_SET_TONALITY_REQUEST, __opus_check_int(x)
107 #define CELT_SET_TONALITY_SLOPE_REQUEST 10020
108 #define CELT_SET_TONALITY_SLOPE(x) CELT_SET_TONALITY_SLOPE_REQUEST, __opus_check_int(x)
110 #define CELT_SET_ANALYSIS_REQUEST 10022
111 #define CELT_SET_ANALYSIS(x) CELT_SET_ANALYSIS_REQUEST, __celt_check_analysis_ptr(x)
113 #define OPUS_SET_LFE_REQUEST 10024
114 #define OPUS_SET_LFE(x) OPUS_SET_LFE_REQUEST, __opus_check_int(x)
116 #define OPUS_SET_ENERGY_MASK_REQUEST 10026
117 #define OPUS_SET_ENERGY_MASK(x) OPUS_SET_ENERGY_MASK_REQUEST, __opus_check_val16_ptr(x)
119 /* Encoder stuff */
121 int celt_encoder_get_size(int channels);
123 int celt_encode_with_ec(OpusCustomEncoder * OPUS_RESTRICT st, const opus_val16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
125 int celt_encoder_init(CELTEncoder *st, opus_int32 sampling_rate, int channels,
126 int arch);
130 /* Decoder stuff */
132 int celt_decoder_get_size(int channels);
135 int celt_decoder_init(CELTDecoder *st, opus_int32 sampling_rate, int channels);
137 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);
139 #define celt_encoder_ctl opus_custom_encoder_ctl
140 #define celt_decoder_ctl opus_custom_decoder_ctl
143 #ifdef CUSTOM_MODES
144 #define OPUS_CUSTOM_NOSTATIC
145 #else
146 #define OPUS_CUSTOM_NOSTATIC static OPUS_INLINE
147 #endif
149 static const unsigned char trim_icdf[11] = {126, 124, 119, 109, 87, 41, 19, 9, 4, 2, 0};
150 /* Probs: NONE: 21.875%, LIGHT: 6.25%, NORMAL: 65.625%, AGGRESSIVE: 6.25% */
151 static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
153 static const unsigned char tapset_icdf[3]={2,1,0};
155 #ifdef CUSTOM_MODES
156 static const unsigned char toOpusTable[20] = {
157 0xE0, 0xE8, 0xF0, 0xF8,
158 0xC0, 0xC8, 0xD0, 0xD8,
159 0xA0, 0xA8, 0xB0, 0xB8,
160 0x00, 0x00, 0x00, 0x00,
161 0x80, 0x88, 0x90, 0x98,
162 };
164 static const unsigned char fromOpusTable[16] = {
165 0x80, 0x88, 0x90, 0x98,
166 0x40, 0x48, 0x50, 0x58,
167 0x20, 0x28, 0x30, 0x38,
168 0x00, 0x08, 0x10, 0x18
169 };
171 static OPUS_INLINE int toOpus(unsigned char c)
172 {
173 int ret=0;
174 if (c<0xA0)
175 ret = toOpusTable[c>>3];
176 if (ret == 0)
177 return -1;
178 else
179 return ret|(c&0x7);
180 }
182 static OPUS_INLINE int fromOpus(unsigned char c)
183 {
184 if (c<0x80)
185 return -1;
186 else
187 return fromOpusTable[(c>>3)-16] | (c&0x7);
188 }
189 #endif /* CUSTOM_MODES */
191 #define COMBFILTER_MAXPERIOD 1024
192 #define COMBFILTER_MINPERIOD 15
194 extern const signed char tf_select_table[4][8];
196 int resampling_factor(opus_int32 rate);
198 void celt_preemphasis(const opus_val16 * OPUS_RESTRICT pcmp, celt_sig * OPUS_RESTRICT inp,
199 int N, int CC, int upsample, const opus_val16 *coef, celt_sig *mem, int clip);
201 void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
202 opus_val16 g0, opus_val16 g1, int tapset0, int tapset1,
203 const opus_val16 *window, int overlap);
205 void init_caps(const CELTMode *m,int *cap,int LM,int C);
207 #ifdef RESYNTH
208 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);
210 void compute_inv_mdcts(const CELTMode *mode, int shortBlocks, celt_sig *X,
211 celt_sig * OPUS_RESTRICT out_mem[], int C, int LM);
212 #endif
214 #ifdef __cplusplus
215 }
216 #endif
218 #endif /* CELT_H */
