OpenShot Library | libopenshot-audio
0.2.0
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A sequence of timestamped midi messages. More...
#include <juce_MidiMessageSequence.h>
Classes | |
class | MidiEventHolder |
Structure used to hold midi events in the sequence. More... | |
Public Member Functions | |
MidiMessageSequence () | |
Creates an empty midi sequence object. | |
MidiMessageSequence (const MidiMessageSequence &) | |
Creates a copy of another sequence. | |
MidiMessageSequence & | operator= (const MidiMessageSequence &) |
Replaces this sequence with another one. | |
MidiMessageSequence (MidiMessageSequence &&) noexcept | |
Move constructor. | |
MidiMessageSequence & | operator= (MidiMessageSequence &&) noexcept |
Move assignment operator. | |
~MidiMessageSequence () | |
Destructor. | |
void | clear () |
Clears the sequence. | |
int | getNumEvents () const noexcept |
Returns the number of events in the sequence. | |
MidiEventHolder * | getEventPointer (int index) const noexcept |
Returns a pointer to one of the events. | |
MidiEventHolder ** | begin () const noexcept |
Iterator for the list of MidiEventHolders. | |
MidiEventHolder ** | end () const noexcept |
Iterator for the list of MidiEventHolders. | |
double | getTimeOfMatchingKeyUp (int index) const noexcept |
Returns the time of the note-up that matches the note-on at this index. More... | |
int | getIndexOfMatchingKeyUp (int index) const noexcept |
Returns the index of the note-up that matches the note-on at this index. More... | |
int | getIndexOf (const MidiEventHolder *event) const noexcept |
Returns the index of an event. | |
int | getNextIndexAtTime (double timeStamp) const noexcept |
Returns the index of the first event on or after the given timestamp. More... | |
double | getStartTime () const noexcept |
Returns the timestamp of the first event in the sequence. More... | |
double | getEndTime () const noexcept |
Returns the timestamp of the last event in the sequence. More... | |
double | getEventTime (int index) const noexcept |
Returns the timestamp of the event at a given index. More... | |
MidiEventHolder * | addEvent (const MidiMessage &newMessage, double timeAdjustment=0) |
Inserts a midi message into the sequence. More... | |
MidiEventHolder * | addEvent (MidiMessage &&newMessage, double timeAdjustment=0) |
Inserts a midi message into the sequence. More... | |
void | deleteEvent (int index, bool deleteMatchingNoteUp) |
Deletes one of the events in the sequence. More... | |
void | addSequence (const MidiMessageSequence &other, double timeAdjustmentDelta, double firstAllowableDestTime, double endOfAllowableDestTimes) |
Merges another sequence into this one. More... | |
void | addSequence (const MidiMessageSequence &other, double timeAdjustmentDelta) |
Merges another sequence into this one. More... | |
void | updateMatchedPairs () noexcept |
Makes sure all the note-on and note-off pairs are up-to-date. More... | |
void | sort () noexcept |
Forces a sort of the sequence. More... | |
void | extractMidiChannelMessages (int channelNumberToExtract, MidiMessageSequence &destSequence, bool alsoIncludeMetaEvents) const |
Copies all the messages for a particular midi channel to another sequence. More... | |
void | extractSysExMessages (MidiMessageSequence &destSequence) const |
Copies all midi sys-ex messages to another sequence. More... | |
void | deleteMidiChannelMessages (int channelNumberToRemove) |
Removes any messages in this sequence that have a specific midi channel. More... | |
void | deleteSysExMessages () |
Removes any sys-ex messages from this sequence. | |
void | addTimeToMessages (double deltaTime) noexcept |
Adds an offset to the timestamps of all events in the sequence. More... | |
void | createControllerUpdatesForTime (int channelNumber, double time, Array< MidiMessage > &resultMessages) |
Scans through the sequence to determine the state of any midi controllers at a given time. More... | |
void | swapWith (MidiMessageSequence &) noexcept |
Swaps this sequence with another one. | |
Friends | |
class | MidiFile |
A sequence of timestamped midi messages.
This allows the sequence to be manipulated, and also to be read from and written to a standard midi file.
Definition at line 41 of file juce_MidiMessageSequence.h.
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noexcept |
Returns the time of the note-up that matches the note-on at this index.
If the event at this index isn't a note-on, it'll just return 0.
Definition at line 93 of file juce_MidiMessageSequence.cpp.
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noexcept |
Returns the index of the note-up that matches the note-on at this index.
If the event at this index isn't a note-on, it'll just return -1.
Definition at line 102 of file juce_MidiMessageSequence.cpp.
Referenced by deleteEvent(), and MidiMessageSequence().
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noexcept |
Returns the index of the first event on or after the given timestamp.
If the time is beyond the end of the sequence, this will return the number of events.
Definition at line 124 of file juce_MidiMessageSequence.cpp.
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noexcept |
Returns the timestamp of the first event in the sequence.
Definition at line 137 of file juce_MidiMessageSequence.cpp.
References getEventTime().
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noexcept |
Returns the timestamp of the last event in the sequence.
Definition at line 142 of file juce_MidiMessageSequence.cpp.
References getEventTime().
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noexcept |
Returns the timestamp of the event at a given index.
If the index is out-of-range, this will return 0.0
Definition at line 147 of file juce_MidiMessageSequence.cpp.
Referenced by getEndTime(), and getStartTime().
MidiMessageSequence::MidiEventHolder * juce::MidiMessageSequence::addEvent | ( | const MidiMessage & | newMessage, |
double | timeAdjustment = 0 |
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) |
Inserts a midi message into the sequence.
The index at which the new message gets inserted will depend on its timestamp, because the sequence is kept sorted.
Remember to call updateMatchedPairs() after adding note-on events.
newMessage | the new message to add (an internal copy will be made) |
timeAdjustment | an optional value to add to the timestamp of the message that will be inserted |
Definition at line 170 of file juce_MidiMessageSequence.cpp.
Referenced by addEvent(), extractMidiChannelMessages(), and extractSysExMessages().
MidiMessageSequence::MidiEventHolder * juce::MidiMessageSequence::addEvent | ( | MidiMessage && | newMessage, |
double | timeAdjustment = 0 |
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) |
Inserts a midi message into the sequence.
The index at which the new message gets inserted will depend on its timestamp, because the sequence is kept sorted.
Remember to call updateMatchedPairs() after adding note-on events.
newMessage | the new message to add (an internal copy will be made) |
timeAdjustment | an optional value to add to the timestamp of the message that will be inserted |
Definition at line 175 of file juce_MidiMessageSequence.cpp.
References addEvent().
void juce::MidiMessageSequence::deleteEvent | ( | int | index, |
bool | deleteMatchingNoteUp | ||
) |
Deletes one of the events in the sequence.
Remember to call updateMatchedPairs() after removing events.
index | the index of the event to delete |
deleteMatchingNoteUp | whether to also remove the matching note-off if the event you're removing is a note-on |
Definition at line 180 of file juce_MidiMessageSequence.cpp.
References getIndexOfMatchingKeyUp().
void juce::MidiMessageSequence::addSequence | ( | const MidiMessageSequence & | other, |
double | timeAdjustmentDelta, | ||
double | firstAllowableDestTime, | ||
double | endOfAllowableDestTimes | ||
) |
Merges another sequence into this one.
Remember to call updateMatchedPairs() after using this method.
other | the sequence to add from |
timeAdjustmentDelta | an amount to add to the timestamps of the midi events as they are read from the other sequence |
firstAllowableDestTime | events will not be added if their time is earlier than this time. (This is after their time has been adjusted by the timeAdjustmentDelta) |
endOfAllowableDestTimes | events will not be added if their time is equal to or greater than this time. (This is after their time has been adjusted by the timeAdjustmentDelta) |
Definition at line 203 of file juce_MidiMessageSequence.cpp.
References sort().
void juce::MidiMessageSequence::addSequence | ( | const MidiMessageSequence & | other, |
double | timeAdjustmentDelta | ||
) |
Merges another sequence into this one.
Remember to call updateMatchedPairs() after using this method.
other | the sequence to add from |
timeAdjustmentDelta | an amount to add to the timestamps of the midi events as they are read from the other sequence |
Definition at line 191 of file juce_MidiMessageSequence.cpp.
References sort().
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noexcept |
Makes sure all the note-on and note-off pairs are up-to-date.
Call this after re-ordering messages or deleting/adding messages, and it will scan the list and make sure all the note-offs in the MidiEventHolder structures are pointing at the correct ones.
Definition at line 229 of file juce_MidiMessageSequence.cpp.
References juce::MidiMessage::noteOff().
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noexcept |
Forces a sort of the sequence.
You may need to call this if you've manually modified the timestamps of some events such that the overall order now needs updating.
Definition at line 223 of file juce_MidiMessageSequence.cpp.
Referenced by addSequence().
void juce::MidiMessageSequence::extractMidiChannelMessages | ( | int | channelNumberToExtract, |
MidiMessageSequence & | destSequence, | ||
bool | alsoIncludeMetaEvents | ||
) | const |
Copies all the messages for a particular midi channel to another sequence.
channelNumberToExtract | the midi channel to look for, in the range 1 to 16 |
destSequence | the sequence that the chosen events should be copied to |
alsoIncludeMetaEvents | if true, any meta-events (which don't apply to a specific channel) will also be copied across. |
Definition at line 278 of file juce_MidiMessageSequence.cpp.
References addEvent().
void juce::MidiMessageSequence::extractSysExMessages | ( | MidiMessageSequence & | destSequence | ) | const |
Copies all midi sys-ex messages to another sequence.
destSequence | this is the sequence to which any sys-exes in this sequence will be added |
Definition at line 288 of file juce_MidiMessageSequence.cpp.
References addEvent().
void juce::MidiMessageSequence::deleteMidiChannelMessages | ( | int | channelNumberToRemove | ) |
Removes any messages in this sequence that have a specific midi channel.
channelNumberToRemove | the midi channel to look for, in the range 1 to 16 |
Definition at line 295 of file juce_MidiMessageSequence.cpp.
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noexcept |
Adds an offset to the timestamps of all events in the sequence.
deltaTime | the amount to add to each timestamp. |
Definition at line 270 of file juce_MidiMessageSequence.cpp.
void juce::MidiMessageSequence::createControllerUpdatesForTime | ( | int | channelNumber, |
double | time, | ||
Array< MidiMessage > & | resultMessages | ||
) |
Scans through the sequence to determine the state of any midi controllers at a given time.
This will create a sequence of midi controller changes that can be used to set all midi controllers to the state they would be in at the specified time within this sequence.
As well as controllers, it will also recreate the midi program number and pitch bend position.
channelNumber | the midi channel to look for, in the range 1 to 16. Controllers for other channels will be ignored. |
time | the time at which you want to find out the state - there are no explicit units for this time measurement, it's the same units as used for the timestamps of the messages |
resultMessages | an array to which midi controller-change messages will be added. This will be the minimum number of controller changes to recreate the state at the required time. |
Definition at line 310 of file juce_MidiMessageSequence.cpp.
References juce::Array< ElementType, TypeOfCriticalSectionToUse, minimumAllocatedSize >::add().