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author | William Wilgus <me.theuser@yahoo.com> | 2019-01-04 02:01:18 -0600 |
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committer | Solomon Peachy <pizza@shaftnet.org> | 2021-04-23 14:23:04 +0000 |
commit | 14c6bb798d6bebc80f07e863236adbaf8d156a9c (patch) | |
tree | 551a4b641906c2626af844fa3239c1b2b1ff0ad3 /lib/rbcodec/codecs/libopus/silk/encode_indices.c | |
parent | 75d93937965ec4df70d37df6d4feea04577c996b (diff) | |
download | rockbox-14c6bb798d6bebc80f07e863236adbaf8d156a9c.tar.gz rockbox-14c6bb798d6bebc80f07e863236adbaf8d156a9c.zip |
Sync opus codec to upstream git
Change-Id: I0cfcc0005c4ad7bfbb1aaf454188ce70fb043dc1
Diffstat (limited to 'lib/rbcodec/codecs/libopus/silk/encode_indices.c')
-rw-r--r-- | lib/rbcodec/codecs/libopus/silk/encode_indices.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/silk/encode_indices.c b/lib/rbcodec/codecs/libopus/silk/encode_indices.c new file mode 100644 index 0000000000..4bcbc3347b --- /dev/null +++ b/lib/rbcodec/codecs/libopus/silk/encode_indices.c | |||
@@ -0,0 +1,181 @@ | |||
1 | /*********************************************************************** | ||
2 | Copyright (c) 2006-2011, Skype Limited. All rights reserved. | ||
3 | Redistribution and use in source and binary forms, with or without | ||
4 | modification, are permitted provided that the following conditions | ||
5 | are met: | ||
6 | - Redistributions of source code must retain the above copyright notice, | ||
7 | this list of conditions and the following disclaimer. | ||
8 | - Redistributions in binary form must reproduce the above copyright | ||
9 | notice, this list of conditions and the following disclaimer in the | ||
10 | documentation and/or other materials provided with the distribution. | ||
11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the | ||
12 | names of specific contributors, may be used to endorse or promote | ||
13 | products derived from this software without specific prior written | ||
14 | permission. | ||
15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
16 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
17 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
18 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | ||
19 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
20 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
21 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
22 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
23 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
24 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
25 | POSSIBILITY OF SUCH DAMAGE. | ||
26 | ***********************************************************************/ | ||
27 | |||
28 | #ifdef HAVE_CONFIG_H | ||
29 | #include "config.h" | ||
30 | #endif | ||
31 | |||
32 | #include "main.h" | ||
33 | |||
34 | /* Encode side-information parameters to payload */ | ||
35 | void silk_encode_indices( | ||
36 | silk_encoder_state *psEncC, /* I/O Encoder state */ | ||
37 | ec_enc *psRangeEnc, /* I/O Compressor data structure */ | ||
38 | opus_int FrameIndex, /* I Frame number */ | ||
39 | opus_int encode_LBRR, /* I Flag indicating LBRR data is being encoded */ | ||
40 | opus_int condCoding /* I The type of conditional coding to use */ | ||
41 | ) | ||
42 | { | ||
43 | opus_int i, k, typeOffset; | ||
44 | opus_int encode_absolute_lagIndex, delta_lagIndex; | ||
45 | opus_int16 ec_ix[ MAX_LPC_ORDER ]; | ||
46 | opus_uint8 pred_Q8[ MAX_LPC_ORDER ]; | ||
47 | const SideInfoIndices *psIndices; | ||
48 | |||
49 | if( encode_LBRR ) { | ||
50 | psIndices = &psEncC->indices_LBRR[ FrameIndex ]; | ||
51 | } else { | ||
52 | psIndices = &psEncC->indices; | ||
53 | } | ||
54 | |||
55 | /*******************************************/ | ||
56 | /* Encode signal type and quantizer offset */ | ||
57 | /*******************************************/ | ||
58 | typeOffset = 2 * psIndices->signalType + psIndices->quantOffsetType; | ||
59 | celt_assert( typeOffset >= 0 && typeOffset < 6 ); | ||
60 | celt_assert( encode_LBRR == 0 || typeOffset >= 2 ); | ||
61 | if( encode_LBRR || typeOffset >= 2 ) { | ||
62 | ec_enc_icdf( psRangeEnc, typeOffset - 2, silk_type_offset_VAD_iCDF, 8 ); | ||
63 | } else { | ||
64 | ec_enc_icdf( psRangeEnc, typeOffset, silk_type_offset_no_VAD_iCDF, 8 ); | ||
65 | } | ||
66 | |||
67 | /****************/ | ||
68 | /* Encode gains */ | ||
69 | /****************/ | ||
70 | /* first subframe */ | ||
71 | if( condCoding == CODE_CONDITIONALLY ) { | ||
72 | /* conditional coding */ | ||
73 | silk_assert( psIndices->GainsIndices[ 0 ] >= 0 && psIndices->GainsIndices[ 0 ] < MAX_DELTA_GAIN_QUANT - MIN_DELTA_GAIN_QUANT + 1 ); | ||
74 | ec_enc_icdf( psRangeEnc, psIndices->GainsIndices[ 0 ], silk_delta_gain_iCDF, 8 ); | ||
75 | } else { | ||
76 | /* independent coding, in two stages: MSB bits followed by 3 LSBs */ | ||
77 | silk_assert( psIndices->GainsIndices[ 0 ] >= 0 && psIndices->GainsIndices[ 0 ] < N_LEVELS_QGAIN ); | ||
78 | ec_enc_icdf( psRangeEnc, silk_RSHIFT( psIndices->GainsIndices[ 0 ], 3 ), silk_gain_iCDF[ psIndices->signalType ], 8 ); | ||
79 | ec_enc_icdf( psRangeEnc, psIndices->GainsIndices[ 0 ] & 7, silk_uniform8_iCDF, 8 ); | ||
80 | } | ||
81 | |||
82 | /* remaining subframes */ | ||
83 | for( i = 1; i < psEncC->nb_subfr; i++ ) { | ||
84 | silk_assert( psIndices->GainsIndices[ i ] >= 0 && psIndices->GainsIndices[ i ] < MAX_DELTA_GAIN_QUANT - MIN_DELTA_GAIN_QUANT + 1 ); | ||
85 | ec_enc_icdf( psRangeEnc, psIndices->GainsIndices[ i ], silk_delta_gain_iCDF, 8 ); | ||
86 | } | ||
87 | |||
88 | /****************/ | ||
89 | /* Encode NLSFs */ | ||
90 | /****************/ | ||
91 | ec_enc_icdf( psRangeEnc, psIndices->NLSFIndices[ 0 ], &psEncC->psNLSF_CB->CB1_iCDF[ ( psIndices->signalType >> 1 ) * psEncC->psNLSF_CB->nVectors ], 8 ); | ||
92 | silk_NLSF_unpack( ec_ix, pred_Q8, psEncC->psNLSF_CB, psIndices->NLSFIndices[ 0 ] ); | ||
93 | celt_assert( psEncC->psNLSF_CB->order == psEncC->predictLPCOrder ); | ||
94 | for( i = 0; i < psEncC->psNLSF_CB->order; i++ ) { | ||
95 | if( psIndices->NLSFIndices[ i+1 ] >= NLSF_QUANT_MAX_AMPLITUDE ) { | ||
96 | ec_enc_icdf( psRangeEnc, 2 * NLSF_QUANT_MAX_AMPLITUDE, &psEncC->psNLSF_CB->ec_iCDF[ ec_ix[ i ] ], 8 ); | ||
97 | ec_enc_icdf( psRangeEnc, psIndices->NLSFIndices[ i+1 ] - NLSF_QUANT_MAX_AMPLITUDE, silk_NLSF_EXT_iCDF, 8 ); | ||
98 | } else if( psIndices->NLSFIndices[ i+1 ] <= -NLSF_QUANT_MAX_AMPLITUDE ) { | ||
99 | ec_enc_icdf( psRangeEnc, 0, &psEncC->psNLSF_CB->ec_iCDF[ ec_ix[ i ] ], 8 ); | ||
100 | ec_enc_icdf( psRangeEnc, -psIndices->NLSFIndices[ i+1 ] - NLSF_QUANT_MAX_AMPLITUDE, silk_NLSF_EXT_iCDF, 8 ); | ||
101 | } else { | ||
102 | ec_enc_icdf( psRangeEnc, psIndices->NLSFIndices[ i+1 ] + NLSF_QUANT_MAX_AMPLITUDE, &psEncC->psNLSF_CB->ec_iCDF[ ec_ix[ i ] ], 8 ); | ||
103 | } | ||
104 | } | ||
105 | |||
106 | /* Encode NLSF interpolation factor */ | ||
107 | if( psEncC->nb_subfr == MAX_NB_SUBFR ) { | ||
108 | silk_assert( psIndices->NLSFInterpCoef_Q2 >= 0 && psIndices->NLSFInterpCoef_Q2 < 5 ); | ||
109 | ec_enc_icdf( psRangeEnc, psIndices->NLSFInterpCoef_Q2, silk_NLSF_interpolation_factor_iCDF, 8 ); | ||
110 | } | ||
111 | |||
112 | if( psIndices->signalType == TYPE_VOICED ) | ||
113 | { | ||
114 | /*********************/ | ||
115 | /* Encode pitch lags */ | ||
116 | /*********************/ | ||
117 | /* lag index */ | ||
118 | encode_absolute_lagIndex = 1; | ||
119 | if( condCoding == CODE_CONDITIONALLY && psEncC->ec_prevSignalType == TYPE_VOICED ) { | ||
120 | /* Delta Encoding */ | ||
121 | delta_lagIndex = psIndices->lagIndex - psEncC->ec_prevLagIndex; | ||
122 | if( delta_lagIndex < -8 || delta_lagIndex > 11 ) { | ||
123 | delta_lagIndex = 0; | ||
124 | } else { | ||
125 | delta_lagIndex = delta_lagIndex + 9; | ||
126 | encode_absolute_lagIndex = 0; /* Only use delta */ | ||
127 | } | ||
128 | silk_assert( delta_lagIndex >= 0 && delta_lagIndex < 21 ); | ||
129 | ec_enc_icdf( psRangeEnc, delta_lagIndex, silk_pitch_delta_iCDF, 8 ); | ||
130 | } | ||
131 | if( encode_absolute_lagIndex ) { | ||
132 | /* Absolute encoding */ | ||
133 | opus_int32 pitch_high_bits, pitch_low_bits; | ||
134 | pitch_high_bits = silk_DIV32_16( psIndices->lagIndex, silk_RSHIFT( psEncC->fs_kHz, 1 ) ); | ||
135 | pitch_low_bits = psIndices->lagIndex - silk_SMULBB( pitch_high_bits, silk_RSHIFT( psEncC->fs_kHz, 1 ) ); | ||
136 | silk_assert( pitch_low_bits < psEncC->fs_kHz / 2 ); | ||
137 | silk_assert( pitch_high_bits < 32 ); | ||
138 | ec_enc_icdf( psRangeEnc, pitch_high_bits, silk_pitch_lag_iCDF, 8 ); | ||
139 | ec_enc_icdf( psRangeEnc, pitch_low_bits, psEncC->pitch_lag_low_bits_iCDF, 8 ); | ||
140 | } | ||
141 | psEncC->ec_prevLagIndex = psIndices->lagIndex; | ||
142 | |||
143 | /* Countour index */ | ||
144 | silk_assert( psIndices->contourIndex >= 0 ); | ||
145 | silk_assert( ( psIndices->contourIndex < 34 && psEncC->fs_kHz > 8 && psEncC->nb_subfr == 4 ) || | ||
146 | ( psIndices->contourIndex < 11 && psEncC->fs_kHz == 8 && psEncC->nb_subfr == 4 ) || | ||
147 | ( psIndices->contourIndex < 12 && psEncC->fs_kHz > 8 && psEncC->nb_subfr == 2 ) || | ||
148 | ( psIndices->contourIndex < 3 && psEncC->fs_kHz == 8 && psEncC->nb_subfr == 2 ) ); | ||
149 | ec_enc_icdf( psRangeEnc, psIndices->contourIndex, psEncC->pitch_contour_iCDF, 8 ); | ||
150 | |||
151 | /********************/ | ||
152 | /* Encode LTP gains */ | ||
153 | /********************/ | ||
154 | /* PERIndex value */ | ||
155 | silk_assert( psIndices->PERIndex >= 0 && psIndices->PERIndex < 3 ); | ||
156 | ec_enc_icdf( psRangeEnc, psIndices->PERIndex, silk_LTP_per_index_iCDF, 8 ); | ||
157 | |||
158 | /* Codebook Indices */ | ||
159 | for( k = 0; k < psEncC->nb_subfr; k++ ) { | ||
160 | silk_assert( psIndices->LTPIndex[ k ] >= 0 && psIndices->LTPIndex[ k ] < ( 8 << psIndices->PERIndex ) ); | ||
161 | ec_enc_icdf( psRangeEnc, psIndices->LTPIndex[ k ], silk_LTP_gain_iCDF_ptrs[ psIndices->PERIndex ], 8 ); | ||
162 | } | ||
163 | |||
164 | /**********************/ | ||
165 | /* Encode LTP scaling */ | ||
166 | /**********************/ | ||
167 | if( condCoding == CODE_INDEPENDENTLY ) { | ||
168 | silk_assert( psIndices->LTP_scaleIndex >= 0 && psIndices->LTP_scaleIndex < 3 ); | ||
169 | ec_enc_icdf( psRangeEnc, psIndices->LTP_scaleIndex, silk_LTPscale_iCDF, 8 ); | ||
170 | } | ||
171 | silk_assert( !condCoding || psIndices->LTP_scaleIndex == 0 ); | ||
172 | } | ||
173 | |||
174 | psEncC->ec_prevSignalType = psIndices->signalType; | ||
175 | |||
176 | /***************/ | ||
177 | /* Encode seed */ | ||
178 | /***************/ | ||
179 | silk_assert( psIndices->Seed >= 0 && psIndices->Seed < 4 ); | ||
180 | ec_enc_icdf( psRangeEnc, psIndices->Seed, silk_uniform4_iCDF, 8 ); | ||
181 | } | ||