本文整理汇总了C++中AudioParameter::getFloat方法的典型用法代码示例。如果您正苦于以下问题：C++ AudioParameter::getFloat方法的具体用法？C++ AudioParameter::getFloat怎么用？C++ AudioParameter::getFloat使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AudioParameter的用法示例。
在下文中一共展示了AudioParameter::getFloat方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: setParameters
status_t AudioHardwareOutput::setParameters(const char* kvpairs) {
AudioParameter param = AudioParameter(String8(kvpairs));
status_t status = NO_ERROR;
float floatVal;
int intVal;
Settings initial, s;
{
// Record the initial state of the settings from inside the lock. Then
// leave the lock in order to parse the changes to be made.
Mutex::Autolock _l(mSettingsLock);
initial = s = mSettings;
}
/***************************************************************
* HDMI Audio Options *
***************************************************************/
if (param.getInt(kHDMIAllowedParamKey, intVal) == NO_ERROR) {
s.hdmi.allowed = (intVal != 0);
param.remove(kHDMIAllowedParamKey);
}
if ((param.getFloat(kHDMIDelayCompParamKey, floatVal) == NO_ERROR) &&
(floatVal >= 0.0) &&
(floatVal <= AudioOutput::kMaxDelayCompensationMSec)) {
uint32_t delay_comp = static_cast<uint32_t>(floatVal * 1000.0);
s.hdmi.delayCompUsec = delay_comp;
param.remove(kHDMIDelayCompParamKey);
}
if (param.getInt(kFixedHDMIOutputParamKey, intVal) == NO_ERROR) {
s.hdmi.isFixed = (intVal != 0);
param.remove(kFixedHDMIOutputParamKey);
}
if ((param.getFloat(kFixedHDMIOutputLevelParamKey, floatVal) == NO_ERROR)
&& (floatVal <= 0.0)) {
s.hdmi.fixedLvl = floatVal;
param.remove(kFixedHDMIOutputLevelParamKey);
}
/***************************************************************
* Other Options *
***************************************************************/
if ((param.getFloat(kVideoDelayCompParamKey, floatVal) == NO_ERROR) &&
(floatVal >= 0.0) &&
(floatVal <= AudioOutput::kMaxDelayCompensationMSec)) {
s.videoDelayCompUsec = static_cast<uint32_t>(floatVal * 1000.0);
param.remove(kVideoDelayCompParamKey);
}
if (param.size())
status = BAD_VALUE;
// If there was a change made to settings, go ahead and apply it now.
bool allowedOutputsChanged = false;
if (memcmp(&initial, &s, sizeof(initial))) {
Mutex::Autolock _l1(mOutputLock);
Mutex::Autolock _l2(mSettingsLock);
if (memcmp(&initial.hdmi, &s.hdmi, sizeof(initial.hdmi)))
allowedOutputsChanged = allowedOutputsChanged ||
applyOutputSettings_l(initial.hdmi, s.hdmi, mSettings.hdmi,
HDMIAudioOutput::classDevMask());
if (initial.videoDelayCompUsec != s.videoDelayCompUsec)
mSettings.videoDelayCompUsec = s.videoDelayCompUsec;
uint32_t tmp = 0;
if (mSettings.hdmi.allowed && (tmp < mSettings.hdmi.delayCompUsec))
tmp = mSettings.hdmi.delayCompUsec;
if (mMaxDelayCompUsec != tmp)
mMaxDelayCompUsec = tmp;
}
if (allowedOutputsChanged) {
Mutex::Autolock _l(mStreamLock);
updateTgtDevices_l();
}
return status;
}