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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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175 basis_ptr = target_ptr - min_lag_4kHz; | 175 basis_ptr = target_ptr - min_lag_4kHz; |
176 | 176 |
177 /* Check that we are within range of the array */ | 177 /* Check that we are within range of the array */ |
178 silk_assert( basis_ptr >= frame_4kHz ); | 178 silk_assert( basis_ptr >= frame_4kHz ); |
179 silk_assert( basis_ptr + sf_length_8kHz <= frame_4kHz + frame_length_4kH
z ); | 179 silk_assert( basis_ptr + sf_length_8kHz <= frame_4kHz + frame_length_4kH
z ); |
180 | 180 |
181 celt_pitch_xcorr( target_ptr, target_ptr-max_lag_4kHz, xcorr, sf_length_
8kHz, max_lag_4kHz - min_lag_4kHz + 1, arch ); | 181 celt_pitch_xcorr( target_ptr, target_ptr-max_lag_4kHz, xcorr, sf_length_
8kHz, max_lag_4kHz - min_lag_4kHz + 1, arch ); |
182 | 182 |
183 /* Calculate first vector products before loop */ | 183 /* Calculate first vector products before loop */ |
184 cross_corr = xcorr[ max_lag_4kHz - min_lag_4kHz ]; | 184 cross_corr = xcorr[ max_lag_4kHz - min_lag_4kHz ]; |
185 normalizer = silk_energy_FLP( target_ptr, sf_length_8kHz ) + | 185 normalizer = silk_energy_FLP( target_ptr, sf_length_8kHz ) + |
186 silk_energy_FLP( basis_ptr, sf_length_8kHz ) + | 186 silk_energy_FLP( basis_ptr, sf_length_8kHz ) + |
187 sf_length_8kHz * 4000.0f; | 187 sf_length_8kHz * 4000.0f; |
188 | 188 |
189 C[ 0 ][ min_lag_4kHz ] += (silk_float)( 2 * cross_corr / normalizer ); | 189 C[ 0 ][ min_lag_4kHz ] += (silk_float)( 2 * cross_corr / normalizer ); |
190 | 190 |
191 /* From now on normalizer is computed recursively */ | 191 /* From now on normalizer is computed recursively */ |
192 for( d = min_lag_4kHz + 1; d <= max_lag_4kHz; d++ ) { | 192 for( d = min_lag_4kHz + 1; d <= max_lag_4kHz; d++ ) { |
193 basis_ptr--; | 193 basis_ptr--; |
194 | 194 |
195 /* Check that we are within range of the array */ | 195 /* Check that we are within range of the array */ |
196 silk_assert( basis_ptr >= frame_4kHz ); | 196 silk_assert( basis_ptr >= frame_4kHz ); |
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621 for( j = 0; j < PE_NB_STAGE3_LAGS; j++ ) { | 621 for( j = 0; j < PE_NB_STAGE3_LAGS; j++ ) { |
622 silk_assert( idx + j < SCRATCH_SIZE ); | 622 silk_assert( idx + j < SCRATCH_SIZE ); |
623 silk_assert( idx + j < lag_counter ); | 623 silk_assert( idx + j < lag_counter ); |
624 energies_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ]; | 624 energies_st3[ k ][ i ][ j ] = scratch_mem[ idx + j ]; |
625 silk_assert( energies_st3[ k ][ i ][ j ] >= 0.0f ); | 625 silk_assert( energies_st3[ k ][ i ][ j ] >= 0.0f ); |
626 } | 626 } |
627 } | 627 } |
628 target_ptr += sf_length; | 628 target_ptr += sf_length; |
629 } | 629 } |
630 } | 630 } |
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