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avoid exporting conversion tables to public

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This commit is contained in:
derselbst 2018-06-10 13:04:10 +02:00
parent e50042744b
commit b3cb079b60
2 changed files with 16 additions and 25 deletions
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28
src/utils/fluid_conv.c
View file

@ -20,13 +20,17 @@
#include "fluid_conv.h" #include "fluid_conv.h"
#define FLUID_CENTS_HZ_SIZE 1200
#define FLUID_VEL_CB_SIZE 128
#define FLUID_CB_AMP_SIZE 1441
#define FLUID_PAN_SIZE 1002
/* conversion tables */ /* conversion tables */
fluid_real_t fluid_ct2hz_tab[FLUID_CENTS_HZ_SIZE]; static fluid_real_t fluid_ct2hz_tab[FLUID_CENTS_HZ_SIZE];
fluid_real_t fluid_cb2amp_tab[FLUID_CB_AMP_SIZE]; static fluid_real_t fluid_cb2amp_tab[FLUID_CB_AMP_SIZE];
fluid_real_t fluid_concave_tab[128]; static fluid_real_t fluid_concave_tab[FLUID_VEL_CB_SIZE];
fluid_real_t fluid_convex_tab[128]; static fluid_real_t fluid_convex_tab[FLUID_VEL_CB_SIZE];
fluid_real_t fluid_pan_tab[FLUID_PAN_SIZE]; static fluid_real_t fluid_pan_tab[FLUID_PAN_SIZE];
/* /*
* void fluid_synth_init * void fluid_synth_init
@ -57,19 +61,19 @@ fluid_conversion_config(void)
/* concave unipolar positive transform curve */ /* concave unipolar positive transform curve */
fluid_concave_tab[0] = 0.0; fluid_concave_tab[0] = 0.0;
fluid_concave_tab[127] = 1.0; fluid_concave_tab[FLUID_VEL_CB_SIZE - 1] = 1.0;
/* convex unipolar positive transform curve */ /* convex unipolar positive transform curve */
fluid_convex_tab[0] = 0; fluid_convex_tab[0] = 0;
fluid_convex_tab[127] = 1.0; fluid_convex_tab[FLUID_VEL_CB_SIZE - 1] = 1.0;
/* There seems to be an error in the specs. The equations are /* There seems to be an error in the specs. The equations are
implemented according to the pictures on SF2.01 page 73. */ implemented according to the pictures on SF2.01 page 73. */
for (i = 1; i < 127; i++) { for (i = 1; i < FLUID_VEL_CB_SIZE - 1; i++) {
x = -20.0 / 96.0 * log((i * i) / (127.0 * 127.0)) / M_LN10; x = -20.0 / 96.0 * log((i * i) / (fluid_real_t)((FLUID_VEL_CB_SIZE-1) * (FLUID_VEL_CB_SIZE-1))) / M_LN10;
fluid_convex_tab[i] = (fluid_real_t) (1.0 - x); fluid_convex_tab[i] = (fluid_real_t) (1.0 - x);
fluid_concave_tab[127 - i] = (fluid_real_t) x; fluid_concave_tab[(FLUID_VEL_CB_SIZE-1) - i] = (fluid_real_t) x;
} }
/* initialize the pan conversion table */ /* initialize the pan conversion table */
@ -299,7 +303,7 @@ fluid_concave(fluid_real_t val)
{ {
if (val < 0) { if (val < 0) {
return 0; return 0;
} else if (val > 127) { } else if (val >= FLUID_VEL_CB_SIZE) {
return 1; return 1;
} }
return fluid_concave_tab[(int) val]; return fluid_concave_tab[(int) val];
@ -313,7 +317,7 @@ fluid_convex(fluid_real_t val)
{ {
if (val < 0) { if (val < 0) {
return 0; return 0;
} else if (val > 127) { } else if (val >= FLUID_VEL_CB_SIZE) {
return 1; return 1;
} }
return fluid_convex_tab[(int) val]; return fluid_convex_tab[(int) val];

13
src/utils/fluid_conv.h
View file

@ -23,11 +23,6 @@
#include "fluidsynth_priv.h" #include "fluidsynth_priv.h"
#define FLUID_CENTS_HZ_SIZE 1200
#define FLUID_VEL_CB_SIZE 128
#define FLUID_CB_AMP_SIZE 1441
#define FLUID_PAN_SIZE 1002
void fluid_conversion_config(void); void fluid_conversion_config(void);
fluid_real_t fluid_ct2hz_real(fluid_real_t cents); fluid_real_t fluid_ct2hz_real(fluid_real_t cents);
@ -44,12 +39,4 @@ fluid_real_t fluid_balance(fluid_real_t balance, int left);
fluid_real_t fluid_concave(fluid_real_t val); fluid_real_t fluid_concave(fluid_real_t val);
fluid_real_t fluid_convex(fluid_real_t val); fluid_real_t fluid_convex(fluid_real_t val);
extern fluid_real_t fluid_ct2hz_tab[FLUID_CENTS_HZ_SIZE];
extern fluid_real_t fluid_vel2cb_tab[FLUID_VEL_CB_SIZE];
extern fluid_real_t fluid_cb2amp_tab[FLUID_CB_AMP_SIZE];
extern fluid_real_t fluid_concave_tab[128];
extern fluid_real_t fluid_convex_tab[128];
extern fluid_real_t fluid_pan_tab[FLUID_PAN_SIZE];
#endif /* _FLUID_CONV_H */ #endif /* _FLUID_CONV_H */