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Package echonest :: Package remix :: Package support :: Package midi :: Module MidiOutStream :: Class MidiOutStream
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Class MidiOutStream

source code

MidiOutstream is Basically an eventhandler. It is the most central class in the Midi library. You use it both for writing events to an output stream, and as an event handler for an input stream.

This makes it extremely easy to take input from one stream and send it to another. Ie. if you want to read a Midi file, do some processing, and send it to a midiport.

All time values are in absolute values from the opening of a stream. To calculate time values, please use the MidiTime and MidiDeltaTime classes.

Instance Methods [hide private]
 
__init__(self) source code
 
update_time(self, new_time=0, relative=1)
Updates the time, if relative is true, new_time is relative, else it's absolute.		 source code
 
reset_time(self)
reset time to 0		 source code
 
rel_time(self)
Returns the relative time		 source code
 
abs_time(self)
Returns the absolute time		 source code
 
reset_run_stat(self)
Invalidates the running status		 source code
 
set_run_stat(self, new_status)
Set the new running status		 source code
 
get_run_stat(self)
Set the new running status		 source code
 
set_current_track(self, new_track)
Sets the current track number		 source code
 
get_current_track(self)
Returns the current track number		 source code
 
channel_message(self, message_type, channel, data)
The default event handler for channel messages		 source code
 
note_on(self, channel=0, note=64, velocity=64)
channel: 0-15 note, velocity: 0-127		 source code
 
note_off(self, channel=0, note=64, velocity=64)
channel: 0-15 note, velocity: 0-127		 source code
 
aftertouch(self, channel=0, note=64, velocity=64)
channel: 0-15 note, velocity: 0-127		 source code
 
continuous_controller(self, channel, controller, value)
channel: 0-15 controller, value: 0-127		 source code
 
patch_change(self, channel, patch)
channel: 0-15 patch: 0-127		 source code
 
channel_pressure(self, channel, pressure)
channel: 0-15 pressure: 0-127		 source code
 
pitch_bend(self, channel, value)
channel: 0-15 value: 0-16383		 source code
 
system_exclusive(self, data)
data: list of values in range(128)		 source code
 
song_position_pointer(self, value)
value: 0-16383		 source code
 
song_select(self, songNumber)
songNumber: 0-127		 source code
 
tuning_request(self)
No values passed		 source code
 
midi_time_code(self, msg_type, values)
msg_type: 0-7 values: 0-15		 source code
 
header(self, format=0, nTracks=1, division=96)
format: type of midi file in [1,2] nTracks: number of tracks division: timing division		 source code
 
eof(self)
End of file. No more events to be processed.		 source code
 
meta_event(self, meta_type, data)
Handles any undefined meta events		 source code
 
start_of_track(self, n_track=0)
n_track: number of track		 source code
 
end_of_track(self)
n_track: number of track		 source code
 
sequence_number(self, value)
value: 0-16383		 source code
 
text(self, text)
Text event text: string		 source code
 
copyright(self, text)
Copyright notice text: string		 source code
 
sequence_name(self, text)
Sequence/track name text: string		 source code
 
instrument_name(self, text)
text: string		 source code
 
lyric(self, text)
text: string		 source code
 
marker(self, text)
text: string		 source code
 
cuepoint(self, text)
text: string		 source code
 
midi_ch_prefix(self, channel)
channel: midi channel for subsequent data (deprecated in the spec)		 source code
 
midi_port(self, value)
value: Midi port (deprecated in the spec)		 source code
 
tempo(self, value)
value: 0-2097151 tempo in us/quarternote (to calculate value from bpm: int(60,000,000.00 / BPM))		 source code
 
smtp_offset(self, hour, minute, second, frame, framePart)
hour, minute, second: 3 bytes specifying the hour (0-23), minutes (0-59) and seconds (0-59), respectively.		 source code
 
time_signature(self, nn, dd, cc, bb)
nn: Numerator of the signature as notated on sheet music dd: Denominator of the signature as notated on sheet music The denominator is a negative power of 2: 2 = quarter note, 3 = eighth, etc.		 source code
 
key_signature(self, sf, mi)
(+ve) that identifies the key signature (-7 = 7 flats, -1 = 1 flat, 0 = key of C, 1 = 1 sharp, etc).		 source code
 
sequencer_specific(self, data)
data: The data as byte values		 source code
 
timing_clock(self)
No values passed		 source code
 
song_start(self)
No values passed		 source code
 
song_stop(self)
No values passed		 source code
 
song_continue(self)
No values passed		 source code
 
active_sensing(self)
No values passed		 source code
 
system_reset(self)
No values passed		 source code
Method Details [hide private]

smtp_offset(self, hour, minute, second, frame, framePart)

source code  

hour,
minute,
second: 3 bytes specifying the hour (0-23), minutes (0-59) and 
        seconds (0-59), respectively. The hour should be 
        encoded with the SMPTE format, just as it is in MIDI 
        Time Code.
frame: A byte specifying the number of frames per second (one 
       of : 24, 25, 29, 30).
framePart: A byte specifying the number of fractional frames, 
           in 100ths of a frame (even in SMPTE-based tracks 
           using a different frame subdivision, defined in the 
           MThd chunk).

time_signature(self, nn, dd, cc, bb)

source code  

nn: Numerator of the signature as notated on sheet music
dd: Denominator of the signature as notated on sheet music
    The denominator is a negative power of 2: 2 = quarter 
    note, 3 = eighth, etc.
cc: The number of MIDI clocks in a metronome click
bb: The number of notated 32nd notes in a MIDI quarter note 
    (24 MIDI clocks)

key_signature(self, sf, mi)

source code 
sf: is a byte specifying the number of flats (-ve) or sharps
(+ve) that identifies the key signature (-7 = 7 flats, -1 = 1 flat, 0 = key of C, 1 = 1 sharp, etc).

mi: is a byte specifying a major (0) or minor (1) key.


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