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1 /*********************************************************************** | 1 /*********************************************************************** |
2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. | 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
3 Redistribution and use in source and binary forms, with or without | 3 Redistribution and use in source and binary forms, with or without |
4 modification, are permitted provided that the following conditions | 4 modification, are permitted provided that the following conditions |
5 are met: | 5 are met: |
6 - Redistributions of source code must retain the above copyright notice, | 6 - Redistributions of source code must retain the above copyright notice, |
7 this list of conditions and the following disclaimer. | 7 this list of conditions and the following disclaimer. |
8 - Redistributions in binary form must reproduce the above copyright | 8 - Redistributions in binary form must reproduce the above copyright |
9 notice, this list of conditions and the following disclaimer in the | 9 notice, this list of conditions and the following disclaimer in the |
10 documentation and/or other materials provided with the distribution. | 10 documentation and/or other materials provided with the distribution. |
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26 ***********************************************************************/ | 26 ***********************************************************************/ |
27 | 27 |
28 #ifdef HAVE_CONFIG_H | 28 #ifdef HAVE_CONFIG_H |
29 #include "config.h" | 29 #include "config.h" |
30 #endif | 30 #endif |
31 | 31 |
32 #include "main.h" | 32 #include "main.h" |
33 | 33 |
34 /* shell coder; pulse-subframe length is hardcoded */ | 34 /* shell coder; pulse-subframe length is hardcoded */ |
35 | 35 |
36 static inline void combine_pulses( | 36 static OPUS_INLINE void combine_pulses( |
37 opus_int *out, /* O combined pulses vector [len] */ | 37 opus_int *out, /* O combined pulses vector [len] */ |
38 const opus_int *in, /* I input vector [2 * len] */ | 38 const opus_int *in, /* I input vector [2 * len] */ |
39 const opus_int len /* I number of OUTPUT samples */ | 39 const opus_int len /* I number of OUTPUT samples */ |
40 ) | 40 ) |
41 { | 41 { |
42 opus_int k; | 42 opus_int k; |
43 for( k = 0; k < len; k++ ) { | 43 for( k = 0; k < len; k++ ) { |
44 out[ k ] = in[ 2 * k ] + in[ 2 * k + 1 ]; | 44 out[ k ] = in[ 2 * k ] + in[ 2 * k + 1 ]; |
45 } | 45 } |
46 } | 46 } |
47 | 47 |
48 static inline void encode_split( | 48 static OPUS_INLINE void encode_split( |
49 ec_enc *psRangeEnc, /* I/O compressor data structur
e */ | 49 ec_enc *psRangeEnc, /* I/O compressor data structur
e */ |
50 const opus_int p_child1, /* I pulse amplitude of first
child subframe */ | 50 const opus_int p_child1, /* I pulse amplitude of first
child subframe */ |
51 const opus_int p, /* I pulse amplitude of curre
nt subframe */ | 51 const opus_int p, /* I pulse amplitude of curre
nt subframe */ |
52 const opus_uint8 *shell_table /* I table of shell cdfs
*/ | 52 const opus_uint8 *shell_table /* I table of shell cdfs
*/ |
53 ) | 53 ) |
54 { | 54 { |
55 if( p > 0 ) { | 55 if( p > 0 ) { |
56 ec_enc_icdf( psRangeEnc, p_child1, &shell_table[ silk_shell_code_table_o
ffsets[ p ] ], 8 ); | 56 ec_enc_icdf( psRangeEnc, p_child1, &shell_table[ silk_shell_code_table_o
ffsets[ p ] ], 8 ); |
57 } | 57 } |
58 } | 58 } |
59 | 59 |
60 static inline void decode_split( | 60 static OPUS_INLINE void decode_split( |
61 opus_int *p_child1, /* O pulse amplitude of first
child subframe */ | 61 opus_int *p_child1, /* O pulse amplitude of first
child subframe */ |
62 opus_int *p_child2, /* O pulse amplitude of secon
d child subframe */ | 62 opus_int *p_child2, /* O pulse amplitude of secon
d child subframe */ |
63 ec_dec *psRangeDec, /* I/O Compressor data structur
e */ | 63 ec_dec *psRangeDec, /* I/O Compressor data structur
e */ |
64 const opus_int p, /* I pulse amplitude of curre
nt subframe */ | 64 const opus_int p, /* I pulse amplitude of curre
nt subframe */ |
65 const opus_uint8 *shell_table /* I table of shell cdfs
*/ | 65 const opus_uint8 *shell_table /* I table of shell cdfs
*/ |
66 ) | 66 ) |
67 { | 67 { |
68 if( p > 0 ) { | 68 if( p > 0 ) { |
69 p_child1[ 0 ] = ec_dec_icdf( psRangeDec, &shell_table[ silk_shell_code_t
able_offsets[ p ] ], 8 ); | 69 p_child1[ 0 ] = ec_dec_icdf( psRangeDec, &shell_table[ silk_shell_code_t
able_offsets[ p ] ], 8 ); |
70 p_child2[ 0 ] = p - p_child1[ 0 ]; | 70 p_child2[ 0 ] = p - p_child1[ 0 ]; |
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142 decode_split( &pulses2[ 2 ], &pulses2[ 3 ], psRangeDec, pulses3[ 1 ], silk
_shell_code_table2 ); | 142 decode_split( &pulses2[ 2 ], &pulses2[ 3 ], psRangeDec, pulses3[ 1 ], silk
_shell_code_table2 ); |
143 | 143 |
144 decode_split( &pulses1[ 4 ], &pulses1[ 5 ], psRangeDec, pulses2[ 2 ], silk
_shell_code_table1 ); | 144 decode_split( &pulses1[ 4 ], &pulses1[ 5 ], psRangeDec, pulses2[ 2 ], silk
_shell_code_table1 ); |
145 decode_split( &pulses0[ 8 ], &pulses0[ 9 ], psRangeDec, pulses1[ 4 ], silk
_shell_code_table0 ); | 145 decode_split( &pulses0[ 8 ], &pulses0[ 9 ], psRangeDec, pulses1[ 4 ], silk
_shell_code_table0 ); |
146 decode_split( &pulses0[ 10 ], &pulses0[ 11 ], psRangeDec, pulses1[ 5 ], silk
_shell_code_table0 ); | 146 decode_split( &pulses0[ 10 ], &pulses0[ 11 ], psRangeDec, pulses1[ 5 ], silk
_shell_code_table0 ); |
147 | 147 |
148 decode_split( &pulses1[ 6 ], &pulses1[ 7 ], psRangeDec, pulses2[ 3 ], silk
_shell_code_table1 ); | 148 decode_split( &pulses1[ 6 ], &pulses1[ 7 ], psRangeDec, pulses2[ 3 ], silk
_shell_code_table1 ); |
149 decode_split( &pulses0[ 12 ], &pulses0[ 13 ], psRangeDec, pulses1[ 6 ], silk
_shell_code_table0 ); | 149 decode_split( &pulses0[ 12 ], &pulses0[ 13 ], psRangeDec, pulses1[ 6 ], silk
_shell_code_table0 ); |
150 decode_split( &pulses0[ 14 ], &pulses0[ 15 ], psRangeDec, pulses1[ 7 ], silk
_shell_code_table0 ); | 150 decode_split( &pulses0[ 14 ], &pulses0[ 15 ], psRangeDec, pulses1[ 7 ], silk
_shell_code_table0 ); |
151 } | 151 } |
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