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d9a291f641
Took the opportunity to undo the Godot changed made to the opus source. The opus module should eventually be built in its own environment to avoid polluting others with too many include dirs and defines. TODO: Fix the platform/ stuff for opus.
103 lines
4.7 KiB
C
103 lines
4.7 KiB
C
/***********************************************************************
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Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Internet Society, IETF or IETF Trust, nor the
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names of specific contributors, may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "SigProc_FIX.h"
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#include "pitch.h"
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/* Copy and multiply a vector by a constant */
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void silk_scale_copy_vector16(
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opus_int16 *data_out,
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const opus_int16 *data_in,
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opus_int32 gain_Q16, /* I Gain in Q16 */
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const opus_int dataSize /* I Length */
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)
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{
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opus_int i;
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opus_int32 tmp32;
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for( i = 0; i < dataSize; i++ ) {
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tmp32 = silk_SMULWB( gain_Q16, data_in[ i ] );
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data_out[ i ] = (opus_int16)silk_CHECK_FIT16( tmp32 );
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}
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}
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/* Multiply a vector by a constant */
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void silk_scale_vector32_Q26_lshift_18(
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opus_int32 *data1, /* I/O Q0/Q18 */
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opus_int32 gain_Q26, /* I Q26 */
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opus_int dataSize /* I length */
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)
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{
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opus_int i;
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for( i = 0; i < dataSize; i++ ) {
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data1[ i ] = (opus_int32)silk_CHECK_FIT32( silk_RSHIFT64( silk_SMULL( data1[ i ], gain_Q26 ), 8 ) ); /* OUTPUT: Q18 */
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}
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}
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/* sum = for(i=0;i<len;i++)inVec1[i]*inVec2[i]; --- inner product */
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/* Note for ARM asm: */
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/* * inVec1 and inVec2 should be at least 2 byte aligned. */
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/* * len should be positive 16bit integer. */
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/* * only when len>6, memory access can be reduced by half. */
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opus_int32 silk_inner_prod_aligned(
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const opus_int16 *const inVec1, /* I input vector 1 */
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const opus_int16 *const inVec2, /* I input vector 2 */
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const opus_int len, /* I vector lengths */
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int arch /* I Run-time architecture */
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)
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{
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#ifdef FIXED_POINT
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return celt_inner_prod(inVec1, inVec2, len, arch);
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#else
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opus_int i;
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opus_int32 sum = 0;
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for( i = 0; i < len; i++ ) {
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sum = silk_SMLABB( sum, inVec1[ i ], inVec2[ i ] );
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}
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return sum;
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#endif
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}
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opus_int64 silk_inner_prod16_aligned_64_c(
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const opus_int16 *inVec1, /* I input vector 1 */
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const opus_int16 *inVec2, /* I input vector 2 */
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const opus_int len /* I vector lengths */
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)
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{
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opus_int i;
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opus_int64 sum = 0;
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for( i = 0; i < len; i++ ) {
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sum = silk_SMLALBB( sum, inVec1[ i ], inVec2[ i ] );
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}
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return sum;
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}
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