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Side by Side Diff: silk/fixed/LTP_analysis_filter_FIX.c

Issue 12388030: Update Opus to 1.0.2. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/opus
Patch Set: Created 7 years, 9 months ago
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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_FIX.h" 32 #include "main_FIX.h"
33 33
34 void silk_LTP_analysis_filter_FIX( 34 void silk_LTP_analysis_filter_FIX(
35 opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */ 35 opus_int16 *LTP_res, /* O LTP residual signal of length MAX_NB_SUBFR * ( pre_length + subfr_length ) */
36 const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceeding samples */ 36 const opus_int16 *x, /* I Pointer to input signal with at least max( pitchL ) preceding samples */
37 const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */ 37 const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ],/* I LTP_ORDER LTP coefficients for each MAX_NB_SUBFR subframe */
38 const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */ 38 const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag, one for each subframe */
39 const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */ 39 const opus_int32 invGains_Q16[ MAX_NB_SUBFR ], /* I Inverse quantization gains, one for each subframe */
40 const opus_int subfr_length, /* I Length of each subframe */ 40 const opus_int subfr_length, /* I Length of each subframe */
41 const opus_int nb_subfr, /* I Number of subframes */ 41 const opus_int nb_subfr, /* I Number of subframes */
42 const opus_int pre_length /* I Length of the preceeding samples starting at &x[0] for each subframe */ 42 const opus_int pre_length /* I Length of the preceding samples starting at &x[0] for each subframe */
43 ) 43 )
44 { 44 {
45 const opus_int16 *x_ptr, *x_lag_ptr; 45 const opus_int16 *x_ptr, *x_lag_ptr;
46 opus_int16 Btmp_Q14[ LTP_ORDER ]; 46 opus_int16 Btmp_Q14[ LTP_ORDER ];
47 opus_int16 *LTP_res_ptr; 47 opus_int16 *LTP_res_ptr;
48 opus_int k, i, j; 48 opus_int k, i, j;
49 opus_int32 LTP_est; 49 opus_int32 LTP_est;
50 50
51 x_ptr = x; 51 x_ptr = x;
52 LTP_res_ptr = LTP_res; 52 LTP_res_ptr = LTP_res;
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76 76
77 x_lag_ptr++; 77 x_lag_ptr++;
78 } 78 }
79 79
80 /* Update pointers */ 80 /* Update pointers */
81 LTP_res_ptr += subfr_length + pre_length; 81 LTP_res_ptr += subfr_length + pre_length;
82 x_ptr += subfr_length; 82 x_ptr += subfr_length;
83 } 83 }
84 } 84 }
85 85
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