C++ MidiDevice::getPrograms方法代码示例

void
ModifyDeviceCommand::execute()
{
    Device *device = m_studio->getDevice(m_device);
    if (!device) {
        std::cerr << "ERROR: ModifyDeviceCommand::execute(): no such device as " << m_device << std::endl;
        return;
    }

    MidiDevice *midiDevice = dynamic_cast<MidiDevice *>(device);
    if (!midiDevice) {
        std::cerr << "ERROR: ModifyDeviceCommand::execute(): device " << m_device << " is not a MIDI device" << std::endl;
        return;
    }

    // Save Original Values for Undo

    // ??? Really wish we could just m_oldDevice = *(midiDevice).  See below.
    m_oldName = midiDevice->getName();
    m_oldBankList = midiDevice->getBanks();
    m_oldProgramList = midiDevice->getPrograms();
    m_oldControlList = midiDevice->getControlParameters();
    m_oldKeyMappingList = midiDevice->getKeyMappings();
    m_oldLibrarianName = midiDevice->getLibrarianName();
    m_oldLibrarianEmail = midiDevice->getLibrarianEmail();
    m_oldVariationType = midiDevice->getVariationType();
    InstrumentList instruments = midiDevice->getAllInstruments();
    for (size_t i = 0; i < instruments.size(); ++i) {
        // ??? Preserving just the programs isn't enough.  We need
        //     to preserve the rest of the Instrument as well.  However,
        //     the auto/fixed channel feature has made it impossible
        //     to safely make copies of Instrument objects.  Also, Instrument
        //     has an ID.  How should that be handled for undo?  ISTM
        //     that we either need to introduce some sort of copyForUndo()
        //     hack to each object, or develop a set of standards for coding
        //     objects that are undo-safe.  Sounds like a pretty big project.
        m_oldInstrumentPrograms.push_back(instruments[i]->getProgram());
    }

    // Make the Changes

    if (m_changeVariation)
        midiDevice->setVariationType(m_variationType);

    if (m_overwrite) {
        if (m_clearBankAndProgramList) {
            midiDevice->clearBankList();
            midiDevice->clearProgramList();
            midiDevice->clearKeyMappingList();
        } else {
            if (m_changeBanks)
                midiDevice->replaceBankList(m_bankList);
            if (m_changePrograms)
                midiDevice->replaceProgramList(m_programList);
            if (m_changeBanks || m_changePrograms) {
                // Make sure the instruments make sense.
                for (size_t i = 0; i < instruments.size(); ++i) {
                    instruments[i]->pickFirstProgram(
                            midiDevice->isPercussionNumber(i));
                }
            }
        }

        if (m_changeKeyMappings) {
            midiDevice->replaceKeyMappingList(m_keyMappingList);
        }

        if (m_rename)
            midiDevice->setName(m_name);
        midiDevice->setLibrarian(m_librarianName, m_librarianEmail);
    } else {
        if (m_clearBankAndProgramList) {
            midiDevice->clearBankList();
            midiDevice->clearProgramList();
        } else {
            if (m_changeBanks)
                midiDevice->mergeBankList(m_bankList);
            if (m_changePrograms)
                midiDevice->mergeProgramList(m_programList);
        }

        if (m_changeKeyMappings) {
            midiDevice->mergeKeyMappingList(m_keyMappingList);
        }

        if (m_rename) {
            std::string mergeName = midiDevice->getName() +
                                    std::string("/") + m_name;
            midiDevice->setName(mergeName);
        }
    }

    //!!! merge option?
    if (m_changeControls) {
        midiDevice->replaceControlParameters(m_controlList);
    }

    // ??? Instead of this kludge, we should be calling a Studio::hasChanged()
    //     which would then notify all observers (e.g. MIPP) who, in turn,
    //     would update themselves.
//.........这里部分代码省略.........

void
MIDIInstrumentParameterPanel::slotSelectBank(int index)
{
    RG_DEBUG << "slotSelectBank() begin...";

    if (!getSelectedInstrument())
        return;

    MidiDevice *md =
            dynamic_cast<MidiDevice *>(getSelectedInstrument()->getDevice());
    if (!md) {
        std::cerr << "WARNING: MIDIInstrumentParameterPanel::slotSelectBank(): No MidiDevice for Instrument " << getSelectedInstrument()->getId() << '\n';
        return;
    }

    const MidiBank &bank = m_banks[index];

    bool change = false;

    if (md->getVariationType() != MidiDevice::VariationFromLSB) {
        if (getSelectedInstrument()->getLSB() != bank.getLSB()) {
            getSelectedInstrument()->setLSB(bank.getLSB());
            change = true;
        }
    }
    if (md->getVariationType() != MidiDevice::VariationFromMSB) {
        if (getSelectedInstrument()->getMSB() != bank.getMSB()) {
            getSelectedInstrument()->setMSB(bank.getMSB());
            change = true;
        }
    }

    // If no change, bail.
    if (!change)
        return;

    // Make sure the Instrument is valid WRT the Device.

    // If the current bank/program is not valid for this device, fix it.
    if (!getSelectedInstrument()->isProgramValid()) {

        // If we're not in variations mode...
        if (md->getVariationType() == MidiDevice::NoVariations) {

            // ...go with the first program
            ProgramList programList = md->getPrograms(bank);
            if (!programList.empty()) {
                // Switch to the first program in this bank.
                getSelectedInstrument()->setProgram(programList.front());
            } else {
                // No programs for this bank.  Just go with 0.
                getSelectedInstrument()->setProgramChange(0);
            }

        } else {  // We're in variations mode...

            // This is the three-comboboxes (bank/program/variation) case.
            // It's an extremely difficult case to handle, so we're just
            // going to punt and give them the first program/variation in
            // the bank they just selected.

            // Get the variation bank list for this bank
            BankList bankList;
            if (md->getVariationType() == MidiDevice::VariationFromMSB) {
                bankList = md->getBanksByLSB(
                        getSelectedInstrument()->isPercussion(), bank.getLSB());
            } else {
                bankList = md->getBanksByMSB(
                        getSelectedInstrument()->isPercussion(), bank.getMSB());
            }
            if (!bankList.empty()) {
                // Pick the first bank
                MidiBank firstBank = bankList.front();
                // Get the program list
                ProgramList programList = md->getPrograms(firstBank);
                if (!programList.empty()) {
                    // Pick the first program
                    getSelectedInstrument()->setProgram(programList.front());
                }
            }

            // To make the above more complex, we could consider the
            // case where the Program Change happens to be valid for
            // some variation bank in the newly selected bank.  Then
            // go with the 0th variation bank that has that program
            // change.  But I think this is complicated enough.

        }
    }

    getSelectedInstrument()->sendChannelSetup();

    // This is why changed() isn't called within
    // the setters.  If it were, then each of the above changes would
    // result in a change notification going out.  Worst case, that
    // would be three change notifications and the first two would be
    // sent when the Instrument was in an inconsistent state.
    // Rule: Avoid sending change notifications from setters.
    // Why?  It reduces the number of notifications which improves
    // performance.  It avoids sending notifications when an object's
//.........这里部分代码省略.........