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comparison: media/libopus/silk/fixed/vector_ops_FIX.c
media/libopus/silk/fixed/vector_ops_FIX.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:b172d995b837 |
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| 1 /*********************************************************************** | |
| 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. | |
| 3 Redistribution and use in source and binary forms, with or without | |
| 4 modification, are permitted provided that the following conditions | |
| 5 are met: | |
| 6 - Redistributions of source code must retain the above copyright notice, | |
| 7 this list of conditions and the following disclaimer. | |
| 8 - Redistributions in binary form must reproduce the above copyright | |
| 9 notice, this list of conditions and the following disclaimer in the | |
| 10 documentation and/or other materials provided with the distribution. | |
| 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the | |
| 12 names of specific contributors, may be used to endorse or promote | |
| 13 products derived from this software without specific prior written | |
| 14 permission. | |
| 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
| 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 25 POSSIBILITY OF SUCH DAMAGE. | |
| 26 ***********************************************************************/ | |
| 27 | |
| 28 #ifdef HAVE_CONFIG_H | |
| 29 #include "config.h" | |
| 30 #endif | |
| 31 | |
| 32 #include "SigProc_FIX.h" | |
| 33 | |
| 34 /* Copy and multiply a vector by a constant */ | |
| 35 void silk_scale_copy_vector16( | |
| 36 opus_int16 *data_out, | |
| 37 const opus_int16 *data_in, | |
| 38 opus_int32 gain_Q16, /* I Gain in Q16 */ | |
| 39 const opus_int dataSize /* I Length */ | |
| 40 ) | |
| 41 { | |
| 42 opus_int i; | |
| 43 opus_int32 tmp32; | |
| 44 | |
| 45 for( i = 0; i < dataSize; i++ ) { | |
| 46 tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] ); | |
| 47 data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 ); | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 /* Multiply a vector by a constant */ | |
| 52 void silk_scale_vector32_Q26_lshift_18( | |
| 53 opus_int32 *data1, /* I/O Q0/Q18 */ | |
| 54 opus_int32 gain_Q26, /* I Q26 */ | |
| 55 opus_int dataSize /* I length */ | |
| 56 ) | |
| 57 { | |
| 58 opus_int i; | |
| 59 | |
| 60 for( i = 0; i < dataSize; i++ ) { | |
| 61 data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) ); /* OUTPUT: Q18 */ | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 /* sum = for(i=0;i<len;i++)inVec1[i]*inVec2[i]; --- inner product */ | |
| 66 /* Note for ARM asm: */ | |
| 67 /* * inVec1 and inVec2 should be at least 2 byte aligned. */ | |
| 68 /* * len should be positive 16bit integer. */ | |
| 69 /* * only when len>6, memory access can be reduced by half. */ | |
| 70 opus_int32 silk_inner_prod_aligned( | |
| 71 const opus_int16 *const inVec1, /* I input vector 1 */ | |
| 72 const opus_int16 *const inVec2, /* I input vector 2 */ | |
| 73 const opus_int len /* I vector lengths */ | |
| 74 ) | |
| 75 { | |
| 76 opus_int i; | |
| 77 opus_int32 sum = 0; | |
| 78 for( i = 0; i < len; i++ ) { | |
| 79 sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] ); | |
| 80 } | |
| 81 return sum; | |
| 82 } | |
| 83 | |
| 84 opus_int64 silk_inner_prod16_aligned_64( | |
| 85 const opus_int16 *inVec1, /* I input vector 1 */ | |
| 86 const opus_int16 *inVec2, /* I input vector 2 */ | |
| 87 const opus_int len /* I vector lengths */ | |
| 88 ) | |
| 89 { | |
| 90 opus_int i; | |
| 91 opus_int64 sum = 0; | |
| 92 for( i = 0; i < len; i++ ) { | |
| 93 sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] ); | |
| 94 } | |
| 95 return sum; | |
| 96 } |
