diff options
Diffstat (limited to 'src/opus-1.0.2/silk/fixed/residual_energy_FIX.c')
| -rw-r--r-- | src/opus-1.0.2/silk/fixed/residual_energy_FIX.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/src/opus-1.0.2/silk/fixed/residual_energy_FIX.c b/src/opus-1.0.2/silk/fixed/residual_energy_FIX.c deleted file mode 100644 index f284e51f..00000000 --- a/src/opus-1.0.2/silk/fixed/residual_energy_FIX.c +++ /dev/null @@ -1,91 +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 "main_FIX.h" - -/* Calculates residual energies of input subframes where all subframes have LPC_order */ -/* of preceding samples */ -void silk_residual_energy_FIX( - opus_int32 nrgs[ MAX_NB_SUBFR ], /* O Residual energy per subframe */ - opus_int nrgsQ[ MAX_NB_SUBFR ], /* O Q value per subframe */ - const opus_int16 x[], /* I Input signal */ - opus_int16 a_Q12[ 2 ][ MAX_LPC_ORDER ], /* I AR coefs for each frame half */ - const opus_int32 gains[ MAX_NB_SUBFR ], /* I Quantization gains */ - const opus_int subfr_length, /* I Subframe length */ - const opus_int nb_subfr, /* I Number of subframes */ - const opus_int LPC_order /* I LPC order */ -) -{ - opus_int offset, i, j, rshift, lz1, lz2; - opus_int16 *LPC_res_ptr, LPC_res[ ( MAX_FRAME_LENGTH + MAX_NB_SUBFR * MAX_LPC_ORDER ) / 2 ]; - const opus_int16 *x_ptr; - opus_int32 tmp32; - - x_ptr = x; - offset = LPC_order + subfr_length; - - /* Filter input to create the LPC residual for each frame half, and measure subframe energies */ - for( i = 0; i < nb_subfr >> 1; i++ ) { - /* Calculate half frame LPC residual signal including preceding samples */ - silk_LPC_analysis_filter( LPC_res, x_ptr, a_Q12[ i ], ( MAX_NB_SUBFR >> 1 ) * offset, LPC_order ); - - /* Point to first subframe of the just calculated LPC residual signal */ - LPC_res_ptr = LPC_res + LPC_order; - for( j = 0; j < ( MAX_NB_SUBFR >> 1 ); j++ ) { - /* Measure subframe energy */ - silk_sum_sqr_shift( &nrgs[ i * ( MAX_NB_SUBFR >> 1 ) + j ], &rshift, LPC_res_ptr, subfr_length ); - - /* Set Q values for the measured energy */ - nrgsQ[ i * ( MAX_NB_SUBFR >> 1 ) + j ] = -rshift; - - /* Move to next subframe */ - LPC_res_ptr += offset; - } - /* Move to next frame half */ - x_ptr += ( MAX_NB_SUBFR >> 1 ) * offset; - } - - /* Apply the squared subframe gains */ - for( i = 0; i < nb_subfr; i++ ) { - /* Fully upscale gains and energies */ - lz1 = silk_CLZ32( nrgs[ i ] ) - 1; - lz2 = silk_CLZ32( gains[ i ] ) - 1; - - tmp32 = silk_LSHIFT32( gains[ i ], lz2 ); - - /* Find squared gains */ - tmp32 = silk_SMMUL( tmp32, tmp32 ); /* Q( 2 * lz2 - 32 )*/ - - /* Scale energies */ - nrgs[ i ] = silk_SMMUL( tmp32, silk_LSHIFT32( nrgs[ i ], lz1 ) ); /* Q( nrgsQ[ i ] + lz1 + 2 * lz2 - 32 - 32 )*/ - nrgsQ[ i ] += lz1 + 2 * lz2 - 32 - 32; - } -} |