Add limit parameter to be applied to scaled audio haptic data
Add parameter to ExternalVibrationUtils to be applied after haptic data
scaling and clip amplitudes above the device configured limit.
Bug: 188025353
Test: manual
Change-Id: I17a344583bbce0693ec50f6d6c5949a1696b4527
diff --git a/libs/vibrator/ExternalVibrationUtils.cpp b/libs/vibrator/ExternalVibrationUtils.cpp
index 749c568..980b08b 100644
--- a/libs/vibrator/ExternalVibrationUtils.cpp
+++ b/libs/vibrator/ExternalVibrationUtils.cpp
@@ -56,6 +56,36 @@
}
}
+void applyHapticScale(float* buffer, size_t length, HapticScale scale) {
+ if (scale == HapticScale::MUTE) {
+ memset(buffer, 0, length * sizeof(float));
+ return;
+ }
+ if (scale == HapticScale::NONE) {
+ return;
+ }
+ float gamma = getHapticScaleGamma(scale);
+ float maxAmplitudeRatio = getHapticMaxAmplitudeRatio(scale);
+ for (size_t i = 0; i < length; i++) {
+ float sign = buffer[i] >= 0 ? 1.0 : -1.0;
+ buffer[i] = powf(fabsf(buffer[i] / HAPTIC_MAX_AMPLITUDE_FLOAT), gamma)
+ * maxAmplitudeRatio * HAPTIC_MAX_AMPLITUDE_FLOAT * sign;
+ }
+}
+
+void clipHapticData(float* buffer, size_t length, float limit) {
+ if (isnan(limit) || limit == 0) {
+ return;
+ }
+ limit = fabsf(limit);
+ for (size_t i = 0; i < length; i++) {
+ float sign = buffer[i] >= 0 ? 1.0 : -1.0;
+ if (fabsf(buffer[i]) > limit) {
+ buffer[i] = limit * sign;
+ }
+ }
+}
+
} // namespace
bool isValidHapticScale(HapticScale scale) {
@@ -71,21 +101,11 @@
return false;
}
-void scaleHapticData(float* buffer, size_t length, HapticScale scale) {
- if (!isValidHapticScale(scale) || scale == HapticScale::NONE) {
- return;
+void scaleHapticData(float* buffer, size_t length, HapticScale scale, float limit) {
+ if (isValidHapticScale(scale)) {
+ applyHapticScale(buffer, length, scale);
}
- if (scale == HapticScale::MUTE) {
- memset(buffer, 0, length * sizeof(float));
- return;
- }
- float gamma = getHapticScaleGamma(scale);
- float maxAmplitudeRatio = getHapticMaxAmplitudeRatio(scale);
- for (size_t i = 0; i < length; i++) {
- float sign = buffer[i] >= 0 ? 1.0 : -1.0;
- buffer[i] = powf(fabsf(buffer[i] / HAPTIC_MAX_AMPLITUDE_FLOAT), gamma)
- * maxAmplitudeRatio * HAPTIC_MAX_AMPLITUDE_FLOAT * sign;
- }
+ clipHapticData(buffer, length, limit);
}
} // namespace android::os