17 #include <audio_utils/Balance.h>
21 void Balance::setChannelMask(audio_channel_mask_t channelMask)  in setChannelMask()
33     // save mBalance into balance for later restoring, then reset  in setChannelMask()
34     const float balance = mBalance;  in setChannelMask()  local
48         setBalance(balance);  // recompute balance  in setChannelMask()
73     setBalance(balance); // recompute balance  in setChannelMask()
76 void Balance::process(float *buffer, size_t frames)  in process()
85             // apply the existing mVolumes. We save the balance and volume state here  in process()
97                 // ramped balance  in process()
112     // non-ramped balance  in process()
120 void Balance::computeStereoBalance(float balance, float *left, float *right) const  in computeStereoBalance()  argument
122     if (balance > 0.f) {  in computeStereoBalance()
123         *left = mCurve(1.f - balance);  in computeStereoBalance()
125     } else if (balance < 0.f) {  in computeStereoBalance()
127         *right = mCurve(1.f + balance);  in computeStereoBalance()
134     // *left = balance > 0.f ? mCurve(1.f - balance) : 1.f;  in computeStereoBalance()
135     // *right = balance < 0.f ? mCurve(1.f + balance) : 1.f;  in computeStereoBalance()
138 std::string Balance::toString() const  in toString()
141     ss << "balance " << mBalance << " channelCount " << mChannelCount << " volumes:";  in toString()
149 void Balance::setBalance(float balance)  in setBalance()  argument
152     if (mBalance == balance                         // no change  in setBalance()
153         || isnan(balance) || fabs(balance) > 1.f) { // balance out of range  in setBalance()
157     mBalance = balance;  in setBalance()
168         computeStereoBalance(balance, &mVolumes[0], &mVolumes[1]);  in setBalance()
181     computeStereoBalance(balance, &balanceVolumes[AUDIO_GEOMETRY_SIDE_LEFT],  in setBalance()