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C++ MidiDevice::getBanksByLSB方法代码示例

本文整理汇总了C++中MidiDevice::getBanksByLSB方法的典型用法代码示例。如果您正苦于以下问题:C++ MidiDevice::getBanksByLSB方法的具体用法?C++ MidiDevice::getBanksByLSB怎么用?C++ MidiDevice::getBanksByLSB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MidiDevice的用法示例。


在下文中一共展示了MidiDevice::getBanksByLSB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: getSelectedInstrument

void
MIDIInstrumentParameterPanel::slotSelectProgram(int index)
{
    RG_DEBUG << "slotSelectProgram()";

    if (!getSelectedInstrument())
        return;

    MidiDevice *md =
            dynamic_cast<MidiDevice *>(getSelectedInstrument()->getDevice());
    if (!md)
        return;

    const MidiProgram *prg = &m_programs[index];

    // If there has been no change, bail.
    if (getSelectedInstrument()->getProgramChange() == prg->getProgram())
        return;

    getSelectedInstrument()->setProgramChange(prg->getProgram());

    // In Variations mode, select the 0th variation.

    // In Variations mode, it's very easy to select an "invalid"
    // program change.  I.e. one for which the bank is not valid.  Go
    // from one program/variation to a program that doesn't have that
    // variation.  We need to handle that here by selecting the 0th
    // variation.  That's what the user expects.

    if (md->getVariationType() == MidiDevice::VariationFromMSB) {
        MidiBank bank = getSelectedInstrument()->getProgram().getBank();
        // Get the list of MSB variations.
        BankList bankList = md->getBanksByLSB(
                getSelectedInstrument()->isPercussion(), bank.getLSB());
        if (!bankList.empty()) {
            // Pick the first MSB variation
            getSelectedInstrument()->setMSB(bankList.front().getMSB());
        }
    }
    if (md->getVariationType() == MidiDevice::VariationFromLSB) {
        MidiBank bank = getSelectedInstrument()->getProgram().getBank();
        // Get the list of LSB variations.
        BankList bankList = md->getBanksByMSB(
                getSelectedInstrument()->isPercussion(), bank.getMSB());
        if (!bankList.empty()) {
            // Pick the first LSB variation
            getSelectedInstrument()->setLSB(bankList.front().getLSB());
        }
    }

    getSelectedInstrument()->sendChannelSetup();

    // Just one change notification for the two potential changes.
    // See comments in slotSelectBank() for further discussion.
    getSelectedInstrument()->changed();
}
开发者ID:tedfelix,项目名称:rosegarden,代码行数:56,代码来源:MIDIInstrumentParameterPanel.cpp


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