diff options
Diffstat (limited to 'src/post/goom/sound_tester.c')
| -rw-r--r-- | src/post/goom/sound_tester.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/post/goom/sound_tester.c b/src/post/goom/sound_tester.c new file mode 100644 index 000000000..5b6c0fac5 --- /dev/null +++ b/src/post/goom/sound_tester.c @@ -0,0 +1,135 @@ +#include "sound_tester.h" + +#include <stdlib.h> +#include <string.h> + +/* some constants */ +#define BIG_GOOM_DURATION 100 +#define BIG_GOOM_SPEED_LIMIT 0.1f + +#define ACCEL_MULT 0.95f +#define SPEED_MULT 0.99f + + +void evaluate_sound(gint16 data[2][512], SoundInfo *info) { + + int i; + float difaccel; + + /* find the max */ + int incvar = 0; + for (i = 0; i < 512; i+=2) { + if (incvar < data[0][i]) + incvar = data[0][i]; + } + + if (incvar > info->allTimesMax) + info->allTimesMax = incvar; + + /* volume sonore */ + info->volume = (float)incvar / (float)info->allTimesMax; + memcpy(info->samples[0],data[0],512*sizeof(short)); + memcpy(info->samples[1],data[1],512*sizeof(short)); + + difaccel = info->accelvar; + info->accelvar = info->volume; /* accel entre 0 et 1 */ + + /* transformations sur la vitesse du son */ + if (info->speedvar > 1.0f) + info->speedvar = 1.0f; + + if (info->speedvar < 0.1f) + info->accelvar *= (1.0f - (float)info->speedvar); + else if (info->speedvar < 0.3f) + info->accelvar *= (0.9f - (float)(info->speedvar-0.1f)/2.0f); + else + info->accelvar *= (0.8f - (float)(info->speedvar-0.3f)/4.0f); + + /* adoucissement de l'acceleration */ + info->accelvar *= ACCEL_MULT; + if (info->accelvar < 0) + info->accelvar = 0; + + difaccel = info->accelvar - difaccel; + if (difaccel < 0) + difaccel = - difaccel; + + /* mise a jour de la vitesse */ + info->speedvar = (info->speedvar + difaccel * 0.5f) / 2; + info->speedvar *= SPEED_MULT; + if (info->speedvar < 0) + info->speedvar = 0; + if (info->speedvar > 1) + info->speedvar = 1; + + /* temps du goom */ + info->timeSinceLastGoom++; + info->timeSinceLastBigGoom++; + info->cycle++; + + /* detection des nouveaux gooms */ + if ((info->speedvar > (float)IVAL(info->biggoom_speed_limit_p)/100.0f) + && (info->accelvar > info->bigGoomLimit) + && (info->timeSinceLastBigGoom > BIG_GOOM_DURATION)) { + info->timeSinceLastBigGoom = 0; + } + + if (info->accelvar > info->goom_limit) { + /* TODO: tester && (info->timeSinceLastGoom > 20)) { */ + info->totalgoom ++; + info->timeSinceLastGoom = 0; + info->goomPower = info->accelvar - info->goom_limit; + } + + if (info->accelvar > info->prov_max) + info->prov_max = info->accelvar; + + if (info->goom_limit>1) + info->goom_limit=1; + + /* toute les 2 secondes : vérifier si le taux de goom est correct + * et le modifier sinon.. */ + if (info->cycle % 64 == 0) { + if (info->speedvar<0.01f) + info->goom_limit *= 0.91; + if (info->totalgoom > 4) { + info->goom_limit+=0.02; + } + if (info->totalgoom > 7) { + info->goom_limit*=1.03f; + info->goom_limit+=0.03; + } + if (info->totalgoom > 16) { + info->goom_limit*=1.05f; + info->goom_limit+=0.04; + } + if (info->totalgoom == 0) { + info->goom_limit = info->prov_max - 0.02; + } + if ((info->totalgoom == 1) && (info->goom_limit > 0.02)) + info->goom_limit-=0.01; + info->totalgoom = 0; + info->bigGoomLimit = info->goom_limit * (1.0f + (float)IVAL(info->biggoom_factor_p)/500.0f); + info->prov_max = 0; + } + + /* mise a jour des parametres pour la GUI */ + FVAL(info->volume_p) = info->volume; + info->volume_p.change_listener(&info->volume_p); + FVAL(info->speed_p) = info->speedvar * 4; + info->speed_p.change_listener(&info->speed_p); + FVAL(info->accel_p) = info->accelvar; + info->accel_p.change_listener(&info->accel_p); + + FVAL(info->goom_limit_p) = info->goom_limit; + info->goom_limit_p.change_listener(&info->goom_limit_p); + FVAL(info->goom_power_p) = info->goomPower; + info->goom_power_p.change_listener(&info->goom_power_p); + FVAL(info->last_goom_p) = 1.0-((float)info->timeSinceLastGoom/20.0f); + info->last_goom_p.change_listener(&info->last_goom_p); + FVAL(info->last_biggoom_p) = 1.0-((float)info->timeSinceLastBigGoom/40.0f); + info->last_biggoom_p.change_listener(&info->last_biggoom_p); + + /* bigGoomLimit ==goomLimit*9/8+7 ? */ + } + |