diff options
Diffstat (limited to 'silk/fixed/burg_modified_FIX.c')
| -rw-r--r-- | silk/fixed/burg_modified_FIX.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/silk/fixed/burg_modified_FIX.c b/silk/fixed/burg_modified_FIX.c index 9f898de4..bd204b19 100644 --- a/silk/fixed/burg_modified_FIX.c +++ b/silk/fixed/burg_modified_FIX.c @@ -32,6 +32,7 @@ POSSIBILITY OF SUCH DAMAGE. #include "SigProc_FIX.h" #include "define.h" #include "tuning_parameters.h" +#include "pitch.h" #define MAX_FRAME_SIZE 384 /* subfr_length * nb_subfr = ( 0.005 * 16000 + 16 ) * 4 = 384 */ @@ -60,6 +61,7 @@ void silk_burg_modified( opus_int32 Af_QA[ SILK_MAX_ORDER_LPC ]; opus_int32 CAf[ SILK_MAX_ORDER_LPC + 1 ]; opus_int32 CAb[ SILK_MAX_ORDER_LPC + 1 ]; + opus_int32 xcorr[ SILK_MAX_ORDER_LPC ]; silk_assert( subfr_length * nb_subfr <= MAX_FRAME_SIZE ); @@ -93,10 +95,17 @@ void silk_burg_modified( } } else { for( s = 0; s < nb_subfr; s++ ) { + int i; + opus_int32 d; x_ptr = x + s * subfr_length; + celt_pitch_xcorr(x_ptr, x_ptr + 1, xcorr, subfr_length - D, D ); for( n = 1; n < D + 1; n++ ) { - C_first_row[ n - 1 ] += silk_LSHIFT32( - silk_inner_prod_aligned( x_ptr, x_ptr + n, subfr_length - n ), -rshifts ); + for ( i = n + subfr_length - D, d = 0; i < subfr_length; i++ ) + d = MAC16_16( d, x_ptr[ i ], x_ptr[ i - n ] ); + xcorr[ n - 1 ] += d; + } + for( n = 1; n < D + 1; n++ ) { + C_first_row[ n - 1 ] += silk_LSHIFT32( xcorr[ n - 1 ], -rshifts ); } } } |