Exemple #1
0
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')
Exemple #2
0
    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.
Exemple #3
0
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)