Fix for Bundled Effects level compensation

From the bundled effects, only the EQ had some sort of level compensation
based on the settings of the effect.  This patch takes into account all
the status and levels of EQ, BassBoost and Virtualizer bundled effects
and makes an informed decision on the overall level compensation.

bug: 18213779
Change-Id: I23c7b94fe7da5482f0bbef0cbe715ea464631420

1 files changed, 15 insertions, 0 deletions

diff --git a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
index 420f973..b3071f4 100644
--- a/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
+++ b/media/libeffects/lvm/wrapper/Bundle/EffectBundle.h
@@ -142,6 +142,7 @@ static const uint32_t bandFreqRange[FIVEBAND_NUMBANDS][2] = {
                                        {1800001, 7000000},
                                        {7000001, 1}};
 
+//Note: If these frequencies change, please update LimitLevel values accordingly.
 static const LVM_UINT16  EQNB_5BandPresetsFrequencies[] = {
                                        60,           /* Frequencies in Hz */
                                        230,
@@ -192,6 +193,20 @@ static const PresetConfig gEqualizerPresets[] = {
                                         {"Pop"},
                                         {"Rock"}};
 
+/* The following tables have been computed using the actual levels measured by the output of
+ * white noise or pink noise (IEC268-1) for the EQ and BassBoost Effects. These are estimates of
+ * the actual energy that 'could' be present in the given band.
+ * If the frequency values in EQNB_5BandPresetsFrequencies change, these values might need to be
+ * updated.
+ */
+
+static const float LimitLevel_bandEnergyContribution[FIVEBAND_NUMBANDS] = {
+        5.0, 6.5, 6.45, 4.8, 1.7 };
+
+static const float LimitLevel_bassBoostEnergyContribution = 6.7;
+
+static const float LimitLevel_virtualizerContribution = 1.9;
+
 #if __cplusplus
 }  // extern "C"
 #endif