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| author | Josh Coalson <jcoalson@users.sourceforce.net> | 2007-07-11 04:15:18 +0000 |
|---|---|---|
| committer | Josh Coalson <jcoalson@users.sourceforce.net> | 2007-07-11 04:15:18 +0000 |
| commit | d04ddf8b26a2fb12759b7aef39c4148d0a2e6118 (patch) | |
| tree | 534227040b2278fd40284746cd3ce2af5e8a5e7a /src/libFLAC/lpc.c | |
| parent | b592b49140f896bdaede7f5b9afe6628fc0f2f4e (diff) | |
| download | flac-d04ddf8b26a2fb12759b7aef39c4148d0a2e6118.tar.gz | |
add #define FLAC__LPC_UNROLLED_FILTER_LOOPS for easier selection of filter implementation
Diffstat (limited to 'src/libFLAC/lpc.c')
| -rw-r--r-- | src/libFLAC/lpc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/libFLAC/lpc.c b/src/libFLAC/lpc.c index 71c8aea0..26d1382e 100644 --- a/src/libFLAC/lpc.c +++ b/src/libFLAC/lpc.c @@ -49,6 +49,10 @@ #define M_LN2 0.69314718055994530942 #endif +/* OPT: #undef'ing this may improve the speed on some architectures */ +#define FLAC__LPC_UNROLLED_FILTER_LOOPS + + void FLAC__lpc_window_data(const FLAC__int32 in[], const FLAC__real window[], FLAC__real out[], unsigned data_len) { unsigned i; @@ -259,7 +263,7 @@ int FLAC__lpc_quantize_coefficients(const FLAC__real lp_coeff[], unsigned order, } void FLAC__lpc_compute_residual_from_qlp_coefficients(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]) -#ifdef FLAC__OVERFLOW_DETECT /* this ugly flavor is only for debugging */ +#if defined(FLAC__OVERFLOW_DETECT) || !defined(FLAC__LPC_UNROLLED_FILTER_LOOPS) { FLAC__int64 sumo; unsigned i, j; @@ -525,7 +529,7 @@ void FLAC__lpc_compute_residual_from_qlp_coefficients(const FLAC__int32 *data, u #endif void FLAC__lpc_compute_residual_from_qlp_coefficients_wide(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]) -#ifdef FLAC__OVERFLOW_DETECT /* this ugly flavor is only for debugging */ +#if defined(FLAC__OVERFLOW_DETECT) || !defined(FLAC__LPC_UNROLLED_FILTER_LOOPS) { unsigned i, j; FLAC__int64 sum; @@ -789,7 +793,7 @@ void FLAC__lpc_compute_residual_from_qlp_coefficients_wide(const FLAC__int32 *da #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ void FLAC__lpc_restore_signal(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]) -#ifdef FLAC__OVERFLOW_DETECT /* this ugly flavor is only for debugging */ +#if defined(FLAC__OVERFLOW_DETECT) || !defined(FLAC__LPC_UNROLLED_FILTER_LOOPS) { FLAC__int64 sumo; unsigned i, j; @@ -1055,7 +1059,7 @@ void FLAC__lpc_restore_signal(const FLAC__int32 residual[], unsigned data_len, c #endif void FLAC__lpc_restore_signal_wide(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]) -#ifdef FLAC__OVERFLOW_DETECT /* this ugly flavor is only for debugging */ +#if defined(FLAC__OVERFLOW_DETECT) || !defined(FLAC__LPC_UNROLLED_FILTER_LOOPS) { unsigned i, j; FLAC__int64 sum; |