/usr/bin/coverview is in audiotools 3.1.1-1+b1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Audio Tools, a module and set of tools for manipulating audio data
# Copyright (C) 2007-2015 Brian Langenberger
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import print_function
import sys
import os
import os.path
from io import BytesIO
import audiotools
import audiotools.text as _
# returns the dimensions of image_surface scaled to match the
# display surface size, but without changing its aspect ratio
def image_size(display_surface, image_surface):
display_ratio = float(display_surface[0]) / float(display_surface[1])
image_ratio = float(image_surface[0]) / float(image_surface[1])
if image_ratio > display_ratio: # image wider than display, when scaled
new_width = display_surface[0]
new_height = image_surface[1] / (float(image_surface[0]) /
float(display_surface[0]))
else: # image taller than display, when scaled
new_width = image_surface[0] / (float(image_surface[1]) /
float(display_surface[1]))
new_height = display_surface[1]
(new_width, new_height) = map(int, (new_width, new_height))
return (new_width, new_height)
try:
import pygtk
pygtk.require("2.0")
import gtk
import gtk.gdk
class ImageWidget_Gtk(gtk.DrawingArea):
def __init__(self):
gtk.DrawingArea.__init__(self)
self.full_pixbuf = None
self.scaled_thumbnail = None
self.connect("expose_event", self.expose_event)
self.connect("configure_event", self.configure_event)
self.widget_width = 0
self.widget_height = 0
def set_pixbuf(self, pixbuf):
self.full_pixbuf = pixbuf
self.scaled_thumbnail = None
self.queue_draw()
def clear(self):
self.full_pixbuf = None
self.queue_draw()
def expose_event(self, widget, area):
self.draw_image()
def configure_event(self, widget, area):
self.widget_width = area.width
self.widget_height = area.height
self.draw_image()
def draw_image(self):
if self.full_pixbuf is None:
return
(image_width,
image_height) = image_size((self.widget_width,
self.widget_height),
(self.full_pixbuf.get_width(),
self.full_pixbuf.get_height()))
if (((self.scaled_thumbnail is None) or
(self.scaled_thumbnail.get_width() != image_width) or
(self.scaled_thumbnail.get_height() != image_height))):
self.scaled_thumbnail = self.full_pixbuf.scale_simple(
image_width,
image_height,
gtk.gdk.INTERP_HYPER)
self.window.draw_pixbuf(
gc=self.get_style().fg_gc[gtk.STATE_NORMAL],
pixbuf=self.scaled_thumbnail,
src_x=0,
src_y=0,
dest_x=(self.widget_width - image_width) // 2,
dest_y=(self.widget_height - image_height) // 2,
width=image_width,
height=image_height)
class Coverview_Gtk:
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.connect("delete_event", self.delete_event)
self.window.connect("destroy", self.destroy)
table = gtk.Table(rows=2, columns=2, homogeneous=False)
self.list = gtk.ListStore(str, gtk.gdk.Pixbuf,
str, str, str, str)
self.list_widget = gtk.TreeView(self.list)
self.list_widget.append_column(
gtk.TreeViewColumn(
None, gtk.CellRendererText(), text=0))
self.list_widget.set_headers_visible(False)
list_scroll = gtk.ScrolledWindow()
list_scroll.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)
list_scroll.add(self.list_widget)
self.list_widget.connect("cursor-changed", self.image_selected)
self.image = ImageWidget_Gtk()
accelgroup = gtk.AccelGroup()
self.window.add_accel_group(accelgroup)
menubar = gtk.MenuBar()
file_menu = gtk.Menu()
file_item = gtk.MenuItem("File")
file_item.set_submenu(file_menu)
help_menu = gtk.Menu()
help_item = gtk.MenuItem("Help")
help_item.set_right_justified(True)
help_item.set_submenu(help_menu)
open_item = gtk.ImageMenuItem(gtk.STOCK_OPEN, accelgroup)
open_item.connect("activate", self.open)
file_menu.append(open_item)
quit_item = gtk.ImageMenuItem(gtk.STOCK_QUIT, accelgroup)
quit_item.connect("activate", self.destroy)
file_menu.append(quit_item)
about_item = gtk.ImageMenuItem(gtk.STOCK_ABOUT, accelgroup)
about_item.connect("activate", self.about)
help_menu.append(about_item)
menubar.append(file_item)
menubar.append(help_item)
image_info_bar = gtk.HBox()
self.size_bits = gtk.Label()
self.size_pixels = gtk.Label()
self.bits = gtk.Label()
self.type = gtk.Label()
self.size_bits.set_alignment(1.0, 0.0)
self.size_pixels.set_alignment(1.0, 0.0)
self.bits.set_alignment(1.0, 0.0)
self.type.set_alignment(1.0, 0.0)
image_info_bar.pack_start(self.size_bits)
image_info_bar.pack_start(gtk.VSeparator(),
expand=False, fill=False, padding=3)
image_info_bar.pack_start(self.size_pixels)
image_info_bar.pack_start(gtk.VSeparator(),
expand=False, fill=False, padding=3)
image_info_bar.pack_start(self.bits)
image_info_bar.pack_start(gtk.VSeparator(),
expand=False, fill=False, padding=3)
image_info_bar.pack_start(self.type)
self.statusbar = gtk.Statusbar()
self.statusbar.push(0, "")
table.attach(menubar, 0, 2, 0, 1, yoptions=0)
table.attach(list_scroll, 0, 1, 1, 2, xoptions=0, xpadding=5)
table.attach(self.image, 1, 2, 1, 2)
table.attach(gtk.HSeparator(), 0, 2, 2, 3, yoptions=0)
table.attach(image_info_bar, 0, 2, 3, 4, yoptions=0)
table.attach(self.statusbar, 0, 2, 5, 6, yoptions=0)
self.file_dialog = gtk.FileChooserDialog(
title=_.LAB_CHOOSE_FILE,
action=gtk.FILE_CHOOSER_ACTION_OPEN,
buttons=(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
gtk.STOCK_OPEN, gtk.RESPONSE_OK))
self.about_dialog = gtk.AboutDialog()
self.about_dialog.set_program_name(u"coverview")
self.about_dialog.set_version(audiotools.VERSION)
self.about_dialog.set_copyright(u"(c) Brian Langenberger")
self.about_dialog.set_comments(_.LAB_COVERVIEW_ABOUT)
self.about_dialog.set_website(_.LAB_AUDIOTOOLS_URL)
self.window.add(table)
self.window.set_default_size(800, 600)
self.window.show_all()
def delete_event(self, widget, event, data=None):
return False
def open(self, widget, data=None):
response = self.file_dialog.run()
if response == gtk.RESPONSE_OK:
filename = self.file_dialog.get_filename()
try:
self.set_metadata(
audiotools.open(filename).get_metadata())
self.set_filename(filename)
except audiotools.UnsupportedFile:
error = gtk.MessageDialog(
type=gtk.MESSAGE_ERROR,
message_format=_.ERR_UNSUPPORTED_FILE % (filename),
buttons=gtk.BUTTONS_OK)
error.run()
error.destroy()
except audiotools.InvalidFile:
error = gtk.MessageDialog(
type=gtk.MESSAGE_ERROR,
message_format=_.ERR_INVALID_FILE % (filename),
buttons=gtk.BUTTONS_OK)
error.run()
error.destroy()
except IOError:
error = gtk.MessageDialog(
type=gtk.MESSAGE_ERROR,
message_format=_.ERR_OPEN_IOERROR % (filename),
buttons=gtk.BUTTONS_OK)
error.run()
error.destroy()
elif response == gtk.RESPONSE_CANCEL:
pass
self.file_dialog.hide()
def about(self, widget, data=None):
self.about_dialog.run()
self.about_dialog.hide()
def destroy(self, widget, data=None):
gtk.main_quit()
def image_selected(self, treeview=None):
(liststore,
selection) = self.list_widget.get_selection().get_selected_rows()
row = selection[0][0]
treeiter = liststore.get_iter(row)
self.image.set_pixbuf(liststore.get_value(treeiter, 1))
self.size_bits.set_text(liststore.get_value(treeiter, 2))
self.size_pixels.set_text(liststore.get_value(treeiter, 3))
self.bits.set_text(liststore.get_value(treeiter, 4))
self.type.set_text(liststore.get_value(treeiter, 5))
def image_unselected(self):
self.image.clear()
self.size_bits.set_text(u"")
self.size_pixels.set_text(u"")
self.bits.set_text(u"")
self.type.set_text(u"")
def set_filename(self, path):
self.statusbar.pop(0)
self.statusbar.push(0, path)
def set_metadata(self, metadata):
def get_pixbuf(imagedata):
l = gtk.gdk.PixbufLoader()
l.write(imagedata)
l.close()
return l.get_pixbuf()
self.list.clear()
images = metadata.images()
first_image = None
for image in images:
tree_iter = self.list.append()
self.list.set(tree_iter, 0,
image.type_string())
self.list.set(tree_iter, 1,
get_pixbuf(image.data))
self.list.set(tree_iter, 2,
_.LAB_BYTE_SIZE % (len(image.data)))
self.list.set(tree_iter, 3,
_.LAB_DIMENSIONS % (image.width, image.height))
self.list.set(tree_iter, 4,
_.LAB_BITS_PER_PIXEL % (image.color_depth))
self.list.set(tree_iter, 5, image.mime_type.decode('ascii'))
if first_image is None:
first_image = tree_iter
if len(images) > 0:
self.list_widget.get_selection().select_iter(first_image)
self.image_selected()
else:
self.image_unselected()
def main_gtk(initial_audiofile=None):
coverview = Coverview_Gtk()
if initial_audiofile is not None:
coverview.set_filename(initial_audiofile.filename)
coverview.set_metadata(initial_audiofile.get_metadata())
gtk.main()
GTK_AVAILABLE = True
except ImportError:
GTK_AVAILABLE = False
try:
from Tkinter import *
import Image
import ImageTk
import tkFileDialog
import tkMessageBox
try:
import _imaging as test
except ImportError as err:
if os.uname()[0].lower() == 'darwin':
print("""*** Unable to load Python Imaging Library.
You may need to run Python in 32-bit mode in order for it to load correctly.
If running a Bourne-like shell, try:
% export VERSIONER_PYTHON_PREFER_32_BIT=yes
or, if running a C-like shell, try:
% setenv VERSIONER_PYTHON_PREFER_32_BIT yes
Consult "man python" for further details.
""")
raise err
class ImagePair_Tk:
def __init__(self, path, image_obj):
"""image_obj is an audiotools.Image object"""
self.path = path
self.audiotools = image_obj
self.pil = Image.open(BytesIO(image_obj.data))
class Statusbar_Tkinter(Frame):
def __init__(self, master):
Frame.__init__(self, master)
self.image_info = Frame(self)
self.path_info = Frame(self)
self.path = Label(self.path_info, bd=1, relief=SUNKEN, anchor=W)
self.path.pack(fill=X)
self.size_bits = Label(self.image_info, bd=1, relief=SUNKEN,
anchor=E)
self.size_pixels = Label(self.image_info, bd=1, relief=SUNKEN,
anchor=E)
self.bits = Label(self.image_info, bd=1, relief=SUNKEN, anchor=E)
self.type = Label(self.image_info, bd=1, relief=SUNKEN, anchor=E)
self.size_bits.grid(row=0, column=0, sticky=E + W)
self.size_pixels.grid(row=0, column=1, sticky=E + W)
self.bits.grid(row=0, column=2, sticky=E + W)
self.type.grid(row=0, column=3, sticky=E + W)
self.image_info.columnconfigure(0, weight=1)
self.image_info.columnconfigure(1, weight=1)
self.image_info.columnconfigure(2, weight=1)
self.image_info.columnconfigure(3, weight=1)
self.image_info.pack(fill=X)
self.path_info.pack(fill=X)
def set_path(self, path):
self.path.config(text=path)
def set_image_data(self, image):
if image is None:
return
else:
at_image = image.audiotools
self.path.config(text=image.path)
self.size_bits.config(text=_.LAB_BYTE_SIZE % (len(at_image.data)))
self.size_pixels.config(text=_.LAB_DIMENSIONS % (at_image.width,
at_image.height))
self.bits.config(
text=_.LAB_BITS_PER_PIXEL % (at_image.color_depth))
self.type.config(text=at_image.mime_type)
def clear_image_data(self):
self.path.config(text="")
self.size_bits.config(text="")
self.size_pixels.config(text="")
self.bits.config(text="")
self.type.config(text="")
class About_Tkinter(Frame):
def __init__(self, master):
Frame.__init__(self, master, padx=10, pady=10)
Label(self, text="coverview",
font=("Helvetica", 48)).pack(side=TOP)
Label(self,
text="Python Audio Tools %s" %
(audiotools.VERSION)).pack(side=TOP)
Label(self,
text="(c) by Brian Langenberger",
font=("Helvetica", 10)).pack(side=TOP)
Label(self,
text=_.LAB_COVERVIEW_ABOUT).pack(side=TOP)
Label(self,
text=_.LAB_AUDIOTOOLS_URL).pack(side=TOP)
close = Button(self, text=_.LAB_CLOSE)
close.bind(sequence="<ButtonRelease-1>", func=self.close)
close.pack(side=BOTTOM)
self.master = master
def close(self, event):
self.master.withdraw()
class Coverview_Tkinter:
def __init__(self, master):
self.master = master
frame = Frame(master, width=800, height=600)
self.statusbar = Statusbar_Tkinter(frame)
self.statusbar.pack(side=BOTTOM, fill=X)
self.images = Listbox(frame, selectmode=BROWSE)
self.images.pack(fill=Y, expand=0, side=LEFT)
self.images.bind(sequence="<ButtonRelease-1>",
func=self.event_selected)
self.images.bind(sequence="<KeyRelease>",
func=self.event_selected)
self.canvas = Canvas(frame)
self.canvas.pack(fill=BOTH, expand=1, side=LEFT)
self.canvas.bind(sequence="<Configure>", func=self.event_resized)
self.photo_image_id = None
self.current_image = None
self.image_objects = []
frame.pack(fill=BOTH, expand=1, side=LEFT)
frame.master.title("coverview")
frame.master.geometry("%dx%d" % (800, 600))
self.image_width = int(self.canvas.cget("width"))
self.image_height = int(self.canvas.cget("height"))
self.menubar = Menu(master)
file_menu = Menu(self.menubar, tearoff=0)
file_menu.add_command(label="Open", command=self.open)
file_menu.add_command(label="Quit", command=self.quit)
self.menubar.add_cascade(label="File", menu=file_menu)
help_menu = Menu(self.menubar, tearoff=0)
help_menu.add_command(label="About", command=self.about)
self.menubar.add_cascade(label="Help", menu=help_menu)
# master.bind_all(sequence="<Control-o>", func=self.open)
# master.bind_all(sequence="<Control-q>", func=self.quit)
master.config(menu=self.menubar)
self.about_window = Toplevel()
self.about_window.withdraw()
self.about_window_frame = About_Tkinter(self.about_window)
self.about_window_frame.pack(fill=BOTH, expand=1)
def open(self, *args):
new_file = tkFileDialog.askopenfilename(
parent=self.master,
title=_.LAB_CHOOSE_FILE)
if len(new_file) > 0:
try:
self.set_metadata(new_file,
audiotools.open(new_file).get_metadata())
except audiotools.UnsupportedFile:
self.show_error(_.ERR_UNSUPPORTED_FILE % (new_file))
except audiotools.InvalidFile:
self.show_error(_.ERR_INVALID_FILE % (new_file))
except IOError as err:
self.show_error(_.ERR_OPEN_IOERROR % (new_file))
def quit(self, *args):
self.master.quit()
def about(self, *args):
self.about_window.state("normal")
def show_error(self, error):
if self.photo_image_id is not None:
self.canvas.delete(self.photo_image_id)
self.statusbar.clear_image_data()
self.images.selection_clear(0, END)
self.images.delete(0, END)
self.image_objects = []
self.statusbar.set_path(error)
def event_selected(self, event):
try:
self.current_image = self.image_objects[
int(self.images.curselection()[0])]
self.set_image(self.current_image)
except IndexError:
self.current_image = None
self.set_image(None)
def event_resized(self, event):
self.image_width = event.width
self.image_height = event.height
self.set_image(self.current_image)
def set_image(self, image):
if image is None:
if self.photo_image_id is not None:
self.canvas.delete(self.photo_image_id)
self.statusbar.clear_image_data()
return
(image_width, image_height) = image_size(
(self.image_width,
self.image_height),
(self.current_image.pil.size[0],
self.current_image.pil.size[1]))
resized_image = self.current_image.pil.resize((image_width,
image_height),
Image.ANTIALIAS)
self.photo_image = ImageTk.PhotoImage(resized_image)
if self.photo_image_id is not None:
self.canvas.delete(self.photo_image_id)
self.photo_image_id = self.canvas.create_image(
(self.image_width - image_width) // 2,
(self.image_height - image_height) // 2,
image=self.photo_image,
anchor=NW)
self.statusbar.set_image_data(image)
def set_metadata(self, path, metadata):
self.images.selection_clear(0, END)
self.images.delete(0, END)
self.image_objects = []
if metadata is not None:
image_list = metadata.images()
for image in image_list:
self.images.insert(END, image.type_string())
self.image_objects.append(ImagePair_Tk(path, image))
if len(image_list) > 0:
self.images.index(0)
self.images.selection_set(0)
self.current_image = self.image_objects[0]
self.set_image(self.current_image)
else:
self.set_image(None)
self.statusbar.set_path(path)
else:
self.set_image(None)
self.statusbar.set_path(path)
def main_tkinter(initial_audiofile=None):
root = Tk()
app = Coverview_Tkinter(root)
if initial_audiofile is not None:
app.set_metadata(initial_audiofile.filename,
initial_audiofile.get_metadata())
root.mainloop()
TKINTER_AVAILABLE = True
except ImportError:
TKINTER_AVAILABLE = False
if (__name__ == '__main__'):
import argparse
parser = argparse.ArgumentParser(description=_.DESCRIPTION_COVERVIEW)
parser.add_argument("--version",
action="version",
version="Python Audio Tools %s" % (audiotools.VERSION))
if GTK_AVAILABLE:
parser.add_argument('--no-gtk',
dest="no_gtk",
action='store_true',
default=False,
help=_.OPT_NO_GTK)
if TKINTER_AVAILABLE:
parser.add_argument('--no-tkinter',
dest="no_tkinter",
action='store_true',
default=False,
help=_.OPT_NO_TKINTER)
parser.add_argument("filenames",
metavar="FILENAME",
nargs="*",
help=_.OPT_INPUT_FILENAME)
options = parser.parse_args()
args = options.filenames
messenger = audiotools.Messenger()
use_gtk = (hasattr(options, "no_gtk") and not options.no_gtk)
use_tkinter = (hasattr(options, "no_tkinter") and not options.no_tkinter)
if use_gtk:
if len(args) > 0:
try:
main_gtk(audiotools.open(args[0]))
except audiotools.UnsupportedFile:
messenger.error(_.ERR_UNSUPPORTED_FILE %
(audiotools.Filename(args[0]),))
sys.exit(1)
except audiotools.InvalidFile:
messenger.error(_.ERR_INVALID_FILE %
(audiotools.Filename(args[0]),))
sys.exit(1)
except IOError:
messenger.error(_.ERR_OPEN_IOERROR %
(audiotools.Filename(args[0]),))
sys.exit(1)
else:
main_gtk(None)
elif use_tkinter:
if len(args) > 0:
try:
main_tkinter(audiotools.open(args[0]))
except audiotools.UnsupportedFile:
messenger.error(_.ERR_UNSUPPORTED_FILE %
(audiotools.Filename(args[0]),))
sys.exit(1)
except audiotools.InvalidFile:
messenger.error(_.ERR_INVALID_FILE %
(audiotools.Filename(args[0]),))
sys.exit(1)
except IOError:
messenger.error(_.ERR_OPEN_IOERROR %
(audiotools.Filename(args[0]),))
sys.exit(1)
else:
main_tkinter(None)
else:
messenger.error(_.ERR_NO_GUI)
sys.exit(1)
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