def midi_to_lilypond(midi_fname, output_fname=None, overwrite=False):
"""Convert the given midi file to a lilypond source file.
This uses the command midi2ly with the absolute pitches and explicit durations flag.
Afterwards it will remove all utf-8 from the source file.
Args:
midi_fname (str): the filename of the midi file
output_fname (str): the output lilypond file if None we use the basename of the midi file
overwrite (boolean): if we overwrite the lilypond file if it already exists
Returns:
str: the path to the lilypond source file
"""
output_fname = output_fname or os.path.splitext(midi_fname)[0] + '.ly'
if overwrite:
if os.path.isfile(output_fname):
os.remove(output_fname)
else:
if os.path.isfile(output_fname):
return output_fname
run_command(['midi2ly', '-a', '-e', '-o', output_fname, midi_fname])
run_command(['iconv', '-f', 'utf-8', '-t', 'utf-8', '-c', output_fname, '-o', output_fname])
return output_fname
def convert(self, midi_fname, wav_fname):
ensure_dir_exists(wav_fname)
run_command('fluidsynth -g {gain} -F {wav} {soundfont} {midi}'.format(
wav=wav_fname,
soundfont=self._sound_font,
midi=midi_fname,
gain=self.gain * 10))
def draw_rectangle(image_fname, fill_color, stroke_color, stroke_width, position, end_position, output_fname=None):
"""Draw a rectangle on a given image.
Args:
image_fname: the image to draw on
fill_color (str): the imagemagick color to use for filling
stroke_color (str): the imagemagick color for the border
stroke_width (int): the width fo the stroke
position (tuple): the x,y position of the top-left of the rectangle
end_position (tuple): the x,y end position of the rectangle to draw
output_fname: the output image, if not set it defaults to the input image
"""
if not bash_function_exists('convert'):
raise RuntimeError('The function convert does not exists, please install ImageMagick or some similar tool.')
output_fname = output_fname or image_fname
command = ['convert', '-quality', '100', '-fill', fill_color, '-stroke', stroke_color,
'-strokewidth', str(stroke_width),
'-draw', 'rectangle ' + ','.join(map(str, position)) + ' ' + ','.join(map(str, end_position)),
image_fname, output_fname]
run_command(command)
return image_fname
def midi_to_lilypond(midi_fname, output_fname=None, overwrite=False):
"""Convert the given midi file to a lilypond source file.
This uses the command midi2ly with the absolute pitches and explicit durations flag.
Afterwards it will remove all utf-8 from the source file.
Args:
midi_fname (str): the filename of the midi file
output_fname (str): the output lilypond file if None we use the basename of the midi file
overwrite (boolean): if we overwrite the lilypond file if it already exists
Returns:
str: the path to the lilypond source file
"""
output_fname = output_fname or os.path.splitext(midi_fname)[0] + '.ly'
if overwrite:
if os.path.isfile(output_fname):
os.remove(output_fname)
else:
if os.path.isfile(output_fname):
return output_fname
run_command(['midi2ly', '-a', '-e', '-o', output_fname, midi_fname])
run_command([
'iconv', '-f', 'utf-8', '-t', 'utf-8', '-c', output_fname, '-o',
output_fname
])
return output_fname
def convert(self, midi_fname, wav_fname):
ensure_dir_exists(wav_fname)
with tempfile.NamedTemporaryFile('w') as tmp_file:
tmp_file.write('soundfont {}'.format(self._sound_font))
tmp_file.flush()
run_command('timidity -c {config} --output-24bit -A120 -Ow -o {wav} {midi}'.format(
config=tmp_file.name, wav=wav_fname, midi=midi_fname))
def convert(self, midi_fname, wav_fname):
ensure_dir_exists(wav_fname)
with tempfile.NamedTemporaryFile('w') as tmp_file:
tmp_file.write('soundfont {}'.format(self._sound_font))
tmp_file.flush()
run_command(
'timidity -c {config} --output-24bit -A120 -Ow -o {wav} {midi}'
.format(config=tmp_file.name, wav=wav_fname, midi=midi_fname))
def concatenate_images(output_fname, image_list):
"""Append all the given files to each other in the order given.
Args:
output_fname (str): the output filename
image_list (list of str): the filenames of the images to append
"""
if not bash_function_exists('convert'):
raise RuntimeError('The function convert does not exists, please install ImageMagick or some similar tool.')
ensure_dir_exists(output_fname)
command = ['convert', '-append']
command.extend(image_list)
command.append(output_fname)
run_command(command)
def trim_image(image_fname, output_fname=None):
"""Trim the given images.
Args:
image_fname: the image to trim
output_fname: the output image, if not set it defaults to the input image
Returns:
str: the name of the output image
"""
if not bash_function_exists('convert'):
raise RuntimeError('The function convert does not exists, please install ImageMagick or some similar tool.')
output_fname = output_fname or image_fname
run_command(['convert', '-trim', image_fname, output_fname])
return output_fname
def get_image_size(image_fname):
"""Get the size of the given image.
Args:
image_fname (str): the image we want to get the width and height of
Returns:
tuple: width, height of the given image
"""
if not bash_function_exists('identify'):
raise RuntimeError('The function convert does not exists, please install ImageMagick or some similar tool.')
value = run_command(['identify', '-format', '%[fx:w]x%[fx:h]', image_fname]).decode("utf-8")
return list(map(int, value.split('x')))
def convert(self, midi_fname, wav_fname):
ensure_dir_exists(wav_fname)
run_command('fluidsynth -g {gain} -F {wav} {soundfont} {midi}'.format(
wav=wav_fname, soundfont=self._sound_font, midi=midi_fname, gain=self.gain * 10))
def to_ogg(self, wav_fname, output_fname):
ensure_dir_exists(output_fname)
remove_file_if_exists(output_fname)
run_command('{command} -i {wav} -acodec libvorbis {ogg}'.format(
command=self.command_name, wav=wav_fname, ogg=output_fname))
def to_mp3(self, wav_fname, output_fname):
ensure_dir_exists(output_fname)
remove_file_if_exists(output_fname)
run_command('{command} -i {wav} -vn -ar 44100 -ac 2 -ab 192k -f mp3 {mp3}'.format(
command=self.command_name, wav=wav_fname, mp3=output_fname))
def to_ogg(self, wav_fname, output_fname):
ensure_dir_exists(output_fname)
remove_file_if_exists(output_fname)
run_command('{command} -i {wav} -acodec libvorbis {ogg}'.format(
command=self.command_name, wav=wav_fname, ogg=output_fname))
def to_mp3(self, wav_fname, output_fname):
ensure_dir_exists(output_fname)
remove_file_if_exists(output_fname)
run_command(
'{command} -i {wav} -vn -ar 44100 -ac 2 -ab 192k -f mp3 {mp3}'.
format(command=self.command_name, wav=wav_fname, mp3=output_fname))
