mirrors/flac
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add #define FLAC__LPC_UNROLLED_FILTER_LOOPS for easier selection of filter implementation

Browse Source
This commit is contained in:
Josh Coalson 2007-07-11 04:15:18 +00:00
parent b592b49140
commit d04ddf8b26
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/libFLAC/lpc.c
View File

@ -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;