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Diffstat (limited to 'src/opus-1.0.2/silk/NLSF_VQ_weights_laroia.c')
| -rw-r--r-- | src/opus-1.0.2/silk/NLSF_VQ_weights_laroia.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/src/opus-1.0.2/silk/NLSF_VQ_weights_laroia.c b/src/opus-1.0.2/silk/NLSF_VQ_weights_laroia.c deleted file mode 100644 index 05bb17af..00000000 --- a/src/opus-1.0.2/silk/NLSF_VQ_weights_laroia.c +++ /dev/null @@ -1,80 +0,0 @@ -/*********************************************************************** -Copyright (c) 2006-2011, Skype Limited. All rights reserved. -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions -are met: -- Redistributions of source code must retain the above copyright notice, -this list of conditions and the following disclaimer. -- Redistributions in binary form must reproduce the above copyright -notice, this list of conditions and the following disclaimer in the -documentation and/or other materials provided with the distribution. -- Neither the name of Internet Society, IETF or IETF Trust, nor the -names of specific contributors, may be used to endorse or promote -products derived from this software without specific prior written -permission. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. -***********************************************************************/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "define.h" -#include "SigProc_FIX.h" - -/* -R. Laroia, N. Phamdo and N. Farvardin, "Robust and Efficient Quantization of Speech LSP -Parameters Using Structured Vector Quantization", Proc. IEEE Int. Conf. Acoust., Speech, -Signal Processing, pp. 641-644, 1991. -*/ - -/* Laroia low complexity NLSF weights */ -void silk_NLSF_VQ_weights_laroia( - opus_int16 *pNLSFW_Q_OUT, /* O Pointer to input vector weights [D] */ - const opus_int16 *pNLSF_Q15, /* I Pointer to input vector [D] */ - const opus_int D /* I Input vector dimension (even) */ -) -{ - opus_int k; - opus_int32 tmp1_int, tmp2_int; - - silk_assert( D > 0 ); - silk_assert( ( D & 1 ) == 0 ); - - /* First value */ - tmp1_int = silk_max_int( pNLSF_Q15[ 0 ], 1 ); - tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int ); - tmp2_int = silk_max_int( pNLSF_Q15[ 1 ] - pNLSF_Q15[ 0 ], 1 ); - tmp2_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp2_int ); - pNLSFW_Q_OUT[ 0 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX ); - silk_assert( pNLSFW_Q_OUT[ 0 ] > 0 ); - - /* Main loop */ - for( k = 1; k < D - 1; k += 2 ) { - tmp1_int = silk_max_int( pNLSF_Q15[ k + 1 ] - pNLSF_Q15[ k ], 1 ); - tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int ); - pNLSFW_Q_OUT[ k ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX ); - silk_assert( pNLSFW_Q_OUT[ k ] > 0 ); - - tmp2_int = silk_max_int( pNLSF_Q15[ k + 2 ] - pNLSF_Q15[ k + 1 ], 1 ); - tmp2_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp2_int ); - pNLSFW_Q_OUT[ k + 1 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX ); - silk_assert( pNLSFW_Q_OUT[ k + 1 ] > 0 ); - } - - /* Last value */ - tmp1_int = silk_max_int( ( 1 << 15 ) - pNLSF_Q15[ D - 1 ], 1 ); - tmp1_int = silk_DIV32_16( (opus_int32)1 << ( 15 + NLSF_W_Q ), tmp1_int ); - pNLSFW_Q_OUT[ D - 1 ] = (opus_int16)silk_min_int( tmp1_int + tmp2_int, silk_int16_MAX ); - silk_assert( pNLSFW_Q_OUT[ D - 1 ] > 0 ); -} |