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Side by Side Diff: silk/VAD.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 "main.h" 32 #include "main.h"
33 #include "stack_alloc.h" 33 #include "stack_alloc.h"
34 34
35 /* Silk VAD noise level estimation */ 35 /* Silk VAD noise level estimation */
36 static inline void silk_VAD_GetNoiseLevels( 36 static OPUS_INLINE void silk_VAD_GetNoiseLevels(
37 const opus_int32 pX[ VAD_N_BANDS ], /* I subband energies */ 37 const opus_int32 pX[ VAD_N_BANDS ], /* I subband energies */
38 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ 38 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
39 ); 39 );
40 40
41 /**********************************/ 41 /**********************************/
42 /* Initialization of the Silk VAD */ 42 /* Initialization of the Silk VAD */
43 /**********************************/ 43 /**********************************/
44 opus_int silk_VAD_Init( /* O Return v alue, 0 if success */ 44 opus_int silk_VAD_Init( /* O Return v alue, 0 if success */
45 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ 45 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
46 ) 46 )
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289 psEncC->input_quality_bands_Q15[ b ] = silk_sigm_Q15( silk_RSHIFT( SNR_Q 7 - 16 * 128, 4 ) ); 289 psEncC->input_quality_bands_Q15[ b ] = silk_sigm_Q15( silk_RSHIFT( SNR_Q 7 - 16 * 128, 4 ) );
290 } 290 }
291 291
292 RESTORE_STACK; 292 RESTORE_STACK;
293 return( ret ); 293 return( ret );
294 } 294 }
295 295
296 /**************************/ 296 /**************************/
297 /* Noise level estimation */ 297 /* Noise level estimation */
298 /**************************/ 298 /**************************/
299 static inline void silk_VAD_GetNoiseLevels( 299 static OPUS_INLINE void silk_VAD_GetNoiseLevels(
300 const opus_int32 pX[ VAD_N_BANDS ], /* I subband energies */ 300 const opus_int32 pX[ VAD_N_BANDS ], /* I subband energies */
301 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ 301 silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
302 ) 302 )
303 { 303 {
304 opus_int k; 304 opus_int k;
305 opus_int32 nl, nrg, inv_nrg; 305 opus_int32 nl, nrg, inv_nrg;
306 opus_int coef, min_coef; 306 opus_int coef, min_coef;
307 307
308 /* Initially faster smoothing */ 308 /* Initially faster smoothing */
309 if( psSilk_VAD->counter < 1000 ) { /* 1000 = 20 sec */ 309 if( psSilk_VAD->counter < 1000 ) { /* 1000 = 20 sec */
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348 /* Limit noise levels (guarantee 7 bits of head room) */ 348 /* Limit noise levels (guarantee 7 bits of head room) */
349 nl = silk_min( nl, 0x00FFFFFF ); 349 nl = silk_min( nl, 0x00FFFFFF );
350 350
351 /* Store as part of state */ 351 /* Store as part of state */
352 psSilk_VAD->NL[ k ] = nl; 352 psSilk_VAD->NL[ k ] = nl;
353 } 353 }
354 354
355 /* Increment frame counter */ 355 /* Increment frame counter */
356 psSilk_VAD->counter++; 356 psSilk_VAD->counter++;
357 } 357 }
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