diff options
Diffstat (limited to 'src/libfaad/pns.h')
| -rw-r--r-- | src/libfaad/pns.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/src/libfaad/pns.h b/src/libfaad/pns.h index 6cbcf00b8..1e381ec24 100644 --- a/src/libfaad/pns.h +++ b/src/libfaad/pns.h @@ -16,7 +16,7 @@ ** along with this program; if not, write to the Free Software ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ** -** $Id: pns.h,v 1.1 2002/07/14 23:43:01 miguelfreitas Exp $ +** $Id: pns.h,v 1.2 2002/12/16 19:00:57 miguelfreitas Exp $ **/ #ifndef __PNS_H__ @@ -26,17 +26,25 @@ extern "C" { #endif -#include "syntax.h" #include "common.h" +#include "syntax.h" + #define NOISE_OFFSET 90 -#define MEAN_NRG 1.537228e+18 /* (2^31)^2 / 3 */ +/* #define MEAN_NRG 1.537228e+18 */ /* (2^31)^2 / 3 */ +#ifdef FIXED_POINT +#define ISQRT_MEAN_NRG 0x1DC7 /* sqrt(1/sqrt(MEAN_NRG)) */ +#else +#define ISQRT_MEAN_NRG 8.0655e-10 /* 1/sqrt(MEAN_NRG) */ +#endif -void pns_decode(ic_stream *ics, real_t *spec, uint16_t frame_len); +void pns_decode(ic_stream *ics_left, ic_stream *ics_right, + real_t *spec_left, real_t *spec_right, uint16_t frame_len, + uint8_t channel_pair); static INLINE int32_t random2(); -static void gen_rand_vector(real_t *spec, uint16_t scale_factor, uint16_t size); +static void gen_rand_vector(real_t *spec, int16_t scale_factor, uint16_t size); static INLINE uint8_t is_noise(ic_stream *ics, uint8_t group, uint8_t sfb) { |