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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. |
| (...skipping 15 matching lines...) Expand all Loading... |
| 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 #include "stack_alloc.h" | 33 #include "stack_alloc.h" |
| 34 | 34 |
| 35 /* Generates excitation for CNG LPC synthesis */ | 35 /* Generates excitation for CNG LPC synthesis */ |
| 36 static inline void silk_CNG_exc( | 36 static OPUS_INLINE void silk_CNG_exc( |
| 37 opus_int32 residual_Q10[], /* O CNG residual si
gnal Q10 */ | 37 opus_int32 residual_Q10[], /* O CNG residual si
gnal Q10 */ |
| 38 opus_int32 exc_buf_Q14[], /* I Random samples
buffer Q10 */ | 38 opus_int32 exc_buf_Q14[], /* I Random samples
buffer Q10 */ |
| 39 opus_int32 Gain_Q16, /* I Gain to apply
*/ | 39 opus_int32 Gain_Q16, /* I Gain to apply
*/ |
| 40 opus_int length, /* I Length
*/ | 40 opus_int length, /* I Length
*/ |
| 41 opus_int32 *rand_seed /* I/O Seed to random
index generator */ | 41 opus_int32 *rand_seed /* I/O Seed to random
index generator */ |
| 42 ) | 42 ) |
| 43 { | 43 { |
| 44 opus_int32 seed; | 44 opus_int32 seed; |
| 45 opus_int i, idx, exc_mask; | 45 opus_int i, idx, exc_mask; |
| 46 | 46 |
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| 163 CNG_sig_Q10[ MAX_LPC_ORDER + i ] = silk_ADD_LSHIFT( CNG_sig_Q10[ MAX
_LPC_ORDER + i ], sum_Q6, 4 ); | 163 CNG_sig_Q10[ MAX_LPC_ORDER + i ] = silk_ADD_LSHIFT( CNG_sig_Q10[ MAX
_LPC_ORDER + i ], sum_Q6, 4 ); |
| 164 | 164 |
| 165 frame[ i ] = silk_ADD_SAT16( frame[ i ], silk_RSHIFT_ROUND( sum_Q6,
6 ) ); | 165 frame[ i ] = silk_ADD_SAT16( frame[ i ], silk_RSHIFT_ROUND( sum_Q6,
6 ) ); |
| 166 } | 166 } |
| 167 silk_memcpy( psCNG->CNG_synth_state, &CNG_sig_Q10[ length ], MAX_LPC_ORD
ER * sizeof( opus_int32 ) ); | 167 silk_memcpy( psCNG->CNG_synth_state, &CNG_sig_Q10[ length ], MAX_LPC_ORD
ER * sizeof( opus_int32 ) ); |
| 168 } else { | 168 } else { |
| 169 silk_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order * sizeof( opus
_int32 ) ); | 169 silk_memset( psCNG->CNG_synth_state, 0, psDec->LPC_order * sizeof( opus
_int32 ) ); |
| 170 } | 170 } |
| 171 RESTORE_STACK; | 171 RESTORE_STACK; |
| 172 } | 172 } |
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