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Side by Side Diff: silk/resampler_private_down_FIR.c

Issue 107243004: Updating Opus to release 1.1 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/opus
Patch Set: Created 7 years 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 "SigProc_FIX.h" 32 #include "SigProc_FIX.h"
33 #include "resampler_private.h" 33 #include "resampler_private.h"
34 #include "stack_alloc.h" 34 #include "stack_alloc.h"
35 35
36 static inline opus_int16 *silk_resampler_private_down_FIR_INTERPOL( 36 static OPUS_INLINE opus_int16 *silk_resampler_private_down_FIR_INTERPOL(
37 opus_int16 *out, 37 opus_int16 *out,
38 opus_int32 *buf, 38 opus_int32 *buf,
39 const opus_int16 *FIR_Coefs, 39 const opus_int16 *FIR_Coefs,
40 opus_int FIR_Order, 40 opus_int FIR_Order,
41 opus_int FIR_Fracs, 41 opus_int FIR_Fracs,
42 opus_int32 max_index_Q16, 42 opus_int32 max_index_Q16,
43 opus_int32 index_increment_Q16 43 opus_int32 index_increment_Q16
44 ) 44 )
45 { 45 {
46 opus_int32 index_Q16, res_Q6; 46 opus_int32 index_Q16, res_Q6;
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185 silk_memcpy( buf, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_in t32 ) ); 185 silk_memcpy( buf, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_in t32 ) );
186 } else { 186 } else {
187 break; 187 break;
188 } 188 }
189 } 189 }
190 190
191 /* Copy last part of filtered signal to the state for the next call */ 191 /* Copy last part of filtered signal to the state for the next call */
192 silk_memcpy( S->sFIR.i32, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_in t32 ) ); 192 silk_memcpy( S->sFIR.i32, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_in t32 ) );
193 RESTORE_STACK; 193 RESTORE_STACK;
194 } 194 }
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