diff options
Diffstat (limited to 'src/libFLAC/lpc.c')
| -rw-r--r-- | src/libFLAC/lpc.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/libFLAC/lpc.c b/src/libFLAC/lpc.c index 9b800363..0c8052bd 100644 --- a/src/libFLAC/lpc.c +++ b/src/libFLAC/lpc.c @@ -70,11 +70,11 @@ void FLAC__lpc_window_data(const FLAC__int32 in[], const FLAC__real window[], FL out[i] = in[i] * window[i]; } -void FLAC__lpc_compute_autocorrelation(const FLAC__real data[], uint32_t data_len, uint32_t lag, FLAC__real autoc[]) +void FLAC__lpc_compute_autocorrelation(const FLAC__real data[], uint32_t data_len, uint32_t lag, double autoc[]) { /* a readable, but slower, version */ #if 0 - FLAC__real d; + double d; uint32_t i; FLAC__ASSERT(lag > 0); @@ -89,7 +89,7 @@ void FLAC__lpc_compute_autocorrelation(const FLAC__real data[], uint32_t data_le */ while(lag--) { for(i = lag, d = 0.0; i < data_len; i++) - d += data[i] * data[i - lag]; + d += data[i] * (double)data[i - lag]; autoc[lag] = d; } #endif @@ -98,7 +98,7 @@ void FLAC__lpc_compute_autocorrelation(const FLAC__real data[], uint32_t data_le * this version tends to run faster because of better data locality * ('data_len' is usually much larger than 'lag') */ - FLAC__real d; + double d; uint32_t sample, coeff; const uint32_t limit = data_len - lag; @@ -119,7 +119,7 @@ void FLAC__lpc_compute_autocorrelation(const FLAC__real data[], uint32_t data_le } } -void FLAC__lpc_compute_lp_coefficients(const FLAC__real autoc[], uint32_t *max_order, FLAC__real lp_coeff[][FLAC__MAX_LPC_ORDER], double error[]) +void FLAC__lpc_compute_lp_coefficients(const double autoc[], uint32_t *max_order, FLAC__real lp_coeff[][FLAC__MAX_LPC_ORDER], double error[]) { uint32_t i, j; double r, err, lpc[FLAC__MAX_LPC_ORDER]; |