def generate():
music = request.files.get('music')
# had upload file
if hasattr(music, "file"):
basename, extension = os.path.splitext(music.filename)
# valid the extension
if extension.lower() in ['.wav', '.aiff', '.au', '.ogg', '.flac', '.mp3']:
raw = music.file.read()
filename = md5(raw)
# write upload file into attachment root
f = open("%s/%s%s" % (ATTACHMENT_ROOT, filename, extension), "w")
f.write(raw)
f.close()
# Draw wave image
waveform.draw(
"%s/%s%s" % (ATTACHMENT_ROOT, filename, extension),
"%s/%s%s" % (ATTACHMENT_ROOT, filename, ".png"),
(700, 100),
bgColor=(0,0,0,0),
fgColor=(0,0,128,255)
)
# Save filename into cookie for preview
response.set_cookie("filename", music.filename)
redirect('/preview/%s' % filename)
else:
redirect('/error/invalid-upload-file')
redirect('/error/no-upload-file')
try:
import waveform
except ImportError, exc:
raise ImportError(
"%s [get it at https://github.com/superjoe30/PyWaveform]" % exc)
outdir = outdir or os.path.dirname(mediafile)
outfile = os.path.join(
outdir,
os.path.splitext(os.path.basename(mediafile))[0] + ".png")
with transcode.to_wav(mediafile) as wavfile:
# Draw using a gradient
waveform.draw(wavfile,
outfile,
xy_size,
bgColor=bg_color or WAVE_BG_COLOR,
fgGradientCenter=center_color or WAVE_CENTER_COLOR,
fgGradientOuter=outer_color or WAVE_OUTER_COLOR)
return outfile
def waveform_stack(mediafiles,
xy_size,
output=None,
label_style=None,
center_color=None,
outer_color=None,
bg_color=None):
""" Create a stack of waveform images from audio data.
Return path to created image file.
def waveform_image(mediafile, xy_size, outdir=None, center_color=None, outer_color=None, bg_color=None):
""" Create waveform image from audio data.
Return path to created image file.
"""
try:
import waveform
except ImportError, exc:
raise ImportError("%s [get it at https://github.com/superjoe30/PyWaveform]" % exc)
outdir = outdir or os.path.dirname(mediafile)
outfile = os.path.join(outdir, os.path.splitext(os.path.basename(mediafile))[0] + ".png")
with transcode.to_wav(mediafile) as wavfile:
# Draw using a gradient
waveform.draw(wavfile, outfile, xy_size,
bgColor=bg_color or WAVE_BG_COLOR,
fgGradientCenter=center_color or WAVE_CENTER_COLOR,
fgGradientOuter=outer_color or WAVE_OUTER_COLOR)
return outfile
def waveform_stack(mediafiles, xy_size, output=None, label_style=None,
center_color=None, outer_color=None, bg_color=None):
""" Create a stack of waveform images from audio data.
Return path to created image file.
"""
img_files = []
output = output or os.path.abspath(os.path.dirname(os.path.commonprefix(mediafiles)))
if os.path.isdir(output):
output = os.path.join(output, "waveforms.jpg")
cmd = [config.CMD_IM_MONTAGE] + shlex.split(label_style or WAVE_LABEL_STYLE)