├── avs ├── input │ ├── __init__.py │ ├── portaudio.py │ └── pulseaudio.py ├── output │ ├── __init__.py │ └── vispyqt.py ├── process │ ├── __init__.py │ ├── generic.py │ └── audio_processor.py ├── auxiliary │ ├── __init__.py │ ├── default_settings.ini │ ├── utils.py │ ├── gnu.py │ ├── windows.py │ └── conf.py └── avs.py ├── .gitignore ├── avs.ico ├── screenshot.png ├── debug.bat ├── installer ├── pyaudio_portaudio_py35.zip └── installer.nsi ├── environment.yml ├── setup.py ├── setup.ps1 ├── README.md └── COPYING /avs/input/__init__.py: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /avs/output/__init__.py: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /avs/process/__init__.py: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.egg-info/ 2 | -------------------------------------------------------------------------------- /avs/auxiliary/__init__.py: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /avs.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ninlith/audio-visualizer-screenlet/HEAD/avs.ico -------------------------------------------------------------------------------- /screenshot.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ninlith/audio-visualizer-screenlet/HEAD/screenshot.png -------------------------------------------------------------------------------- /debug.bat: -------------------------------------------------------------------------------- 1 | %localappdata%\audio-visualizer-screenlet\miniconda\envs\py35\python avs\avs.py --debug 2 | pause 3 | -------------------------------------------------------------------------------- /installer/pyaudio_portaudio_py35.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ninlith/audio-visualizer-screenlet/HEAD/installer/pyaudio_portaudio_py35.zip -------------------------------------------------------------------------------- /avs/auxiliary/default_settings.ini: -------------------------------------------------------------------------------- 1 | [main] 2 | timer_frequency: 25 3 | 4 | [recorder] 5 | rate: auto 6 | channels: 2 7 | chunksize: 1024 8 | chunks: 4 9 | 10 | [fft] 11 | sensitivity: 10.0 12 | a-weighting: 0.666 13 | endpoint_notes: C1, C9 14 | 15 | [canvas] 16 | width: 360 17 | height: 150 18 | padding: 20 19 | background_color: 0.04, 0.06, 0.06, 0.8 20 | 21 | [spectrum] 22 | color: 1.0, 1.0, 1.0, 1.0 23 | line_width: 1.5 24 | -------------------------------------------------------------------------------- /environment.yml: -------------------------------------------------------------------------------- 1 | name: py35 2 | channels: 3 | - defaults 4 | dependencies: 5 | - mkl=2017.0.3=0 6 | - numpy=1.13.1=py35_0 7 | - pip=9.0.1=py35_1 8 | - python=3.5.3=3 9 | - pywin32=220=py35_2 10 | - scipy=0.19.1=np113py35_0 11 | - setuptools=27.2.0=py35_1 12 | - six=1.10.0=py35_1 13 | - vs2015_runtime=14.0.25420=0 14 | - wheel=0.29.0=py35_0 15 | - pip: 16 | - argh==0.26.2 17 | - pathtools==0.1.2 18 | - pyfftw==0.10.4 19 | - pyqt5==5.9 20 | - pyyaml==3.12 21 | - sip==4.19.3 22 | - vispy==0.4.0 23 | - watchdog==0.8.3 24 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | req = ['setuptools','six','numpy','scipy','vispy','pyqt'] 3 | pipreq = ['watchdog','pyfftw','python-xlib'] 4 | # 5 | import pip 6 | try: 7 | import conda.cli 8 | conda.cli.main('install',*req) 9 | except Exception as e: 10 | req = req[:-1] + ['pyqt5'] # drop pyqt for pyqt5 11 | pip.main(['install'] + req) 12 | pip.main(['install'] + pipreq) 13 | # %% 14 | from setuptools import setup 15 | 16 | setup(name='audio_visualizer_screenlet', 17 | packages=['avs'], 18 | author='Okko Hartikainen', 19 | url='https://github.com/ninlith/audio-visualizer-screenlet', 20 | description='Cross-platform audio visualization desktop widget', 21 | ) 22 | -------------------------------------------------------------------------------- /installer/installer.nsi: -------------------------------------------------------------------------------- 1 | Name "audio-visualizer-screenlet" 2 | Outfile "avs-..-x64-net_installer.exe" 3 | InstallDir "$PROGRAMFILES64" 4 | ShowInstDetails show 5 | 6 | !include "MUI2.nsh" 7 | !include "x64.nsh" 8 | !define MUI_INSTFILESPAGE_COLORS "FFFFFF 012456" 9 | !insertmacro MUI_PAGE_INSTFILES 10 | !insertmacro MUI_LANGUAGE "English" 11 | 12 | ####### 13 | Section 14 | 15 | Var /GLOBAL PYTHON 16 | StrCpy $PYTHON "$LOCALAPPDATA\$(^Name)\miniconda\envs\py35\pythonw.exe" 17 | StrCpy $INSTDIR "$INSTDIR\$(^Name)" 18 | 19 | SetOutPath $INSTDIR 20 | File /r "..\*.*" 21 | CreateShortCut "$DESKTOP\$(^Name).lnk" "$PYTHON" "avs\avs.py" "$INSTDIR\avs.ico" 22 | ${DisableX64FSRedirection} 23 | nsExec::ExecToLog 'powershell -ExecutionPolicy Bypass -File "$INSTDIR\setup.ps1"' 24 | ${EnableX64FSRedirection} 25 | 26 | SectionEnd -------------------------------------------------------------------------------- /setup.ps1: -------------------------------------------------------------------------------- 1 | $Title = "audio-visualizer-screenlet" 2 | $TempDir = [System.IO.Path]::GetTempPath() 3 | $LocalAppData = [Environment]::GetFolderPath('LocalApplicationData') 4 | $ProgramFiles = [Environment]::GetFolderPath('ProgramFiles') 5 | $RootEnv = "$LocalAppData\$Title\miniconda" 6 | $MinicondaInstaller = "$TempDir\miniconda.exe" 7 | $ScriptName = $MyInvocation.MyCommand.Name 8 | 9 | "[$ScriptName] Downloading Miniconda..." 10 | wget https://repo.continuum.io/miniconda/Miniconda3-latest-Windows-x86_64.exe ` 11 | -OutFile $MinicondaInstaller 12 | 13 | "[$ScriptName] Installing Miniconda..." 14 | & $MinicondaInstaller /InstallationType=JustMe /AddToPath=0 /RegisterPython=0 ` 15 | /S /D=$RootEnv | out-null 16 | rm $MinicondaInstaller 17 | 18 | "[$ScriptName] Activating root environment..." 19 | $env:Path = "$RootEnv;$RootEnv\Scripts;" + $env:Path 20 | 21 | "[$ScriptName] Creating and populating a sub-environment..." 22 | conda env create -f environment.yml 23 | 24 | "[$ScriptName] Installing extended PyAudio with PortAudio..." 25 | Expand-Archive -Path "$ProgramFiles\$Title\installer\pyaudio_portaudio_py35.zip" -DestinationPath "$RootEnv\envs\py35\Lib\site-packages" 26 | 27 | "[$ScriptName] Removing unused packages and caches..." 28 | conda clean --yes --all 29 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # audio-visualizer-screenlet 2 | Visualizes sound card output (PulseAudio monitor or WASAPI loopback). 3 | 4 | ![screenshot](screenshot.png) 5 | 6 | ## Installation 7 | 8 | ### Anaconda/Miniconda Python 9 | 10 | python setup.py develop 11 | 12 | 13 | ### Debian Stretch 14 | 15 | sudo apt install git virtualenv python3-dev libfftw3-dev python3-numpy \ 16 | python3-pyqt5 python3-pyqt5.qtopengl python3-scipy python3-vispy \ 17 | python3-watchdog python3-xlib 18 | git clone https://github.com/ninlith/audio-visualizer-screenlet.git 19 | cd audio-visualizer-screenlet 20 | virtualenv --python=python3 --system-site-packages venv 21 | source venv/bin/activate 22 | pip install pyfftw 23 | 24 | ### Windows (64-bit) 25 | Use the [installer](https://github.com/ninlith/audio-visualizer-screenlet/releases/). 26 | 27 | ## Controls 28 | 29 | Binding | Action 30 | ------- | ------ 31 | Mouse Wheel | adjust sensitivity 32 | 33 | ## Usage 34 | 35 | usage: avs.py [-h] [-d] 36 | 37 | optional arguments: 38 | -h, --help show this help message and exit 39 | -d, --debug enable DEBUG logging level 40 | 41 | ## Configuration 42 | `settings.ini` file inside `audio-visualizer-screenlet` folder inside `%LOCALAPPDATA%` (Windows) or `$XDG_CONFIG_HOME` or `$HOME/.config`. 43 | 44 | If this folder does not exist, it will be created. 45 | 46 | ## License 47 | GNU GPLv3 48 | -------------------------------------------------------------------------------- /avs/auxiliary/utils.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """General-purpose utility classes and functions.""" 9 | 10 | from difflib import Differ 11 | import os 12 | import sys 13 | try: 14 | from threading import _Timer as Timer 15 | except ImportError: 16 | from threading import Timer 17 | 18 | 19 | # https://gist.github.com/alexbw/1187132#gistcomment-1408433 20 | class RepeatingTimer(Timer): 21 | """ 22 | See: https://hg.python.org/cpython/file/2.7/Lib/threading.py#l1079 23 | """ 24 | 25 | def run(self): 26 | while not self.finished.is_set(): 27 | self.finished.wait(self.interval) 28 | self.function(*self.args, **self.kwargs) 29 | 30 | self.finished.set() 31 | 32 | 33 | # https://stackoverflow.com/a/10775310 34 | def highlight_changes(s1, s2): 35 | """Highlight words that are changed.""" 36 | # pylint: disable=invalid-name 37 | l1 = s1.split(' ') 38 | l2 = s2.split(' ') 39 | dif = list(Differ().compare(l1, l2)) 40 | return " ".join(["\033[1m" + i[2:] + "\033[0m" if i[:1] == "+" else i[2:] 41 | for i in dif if not i[:1] in "-?"]) 42 | 43 | 44 | def restart_program(): 45 | """Restart the current program.""" 46 | python = sys.executable 47 | os.execl(python, python, *sys.argv) 48 | -------------------------------------------------------------------------------- /avs/auxiliary/gnu.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """GNU-specific code.""" 9 | 10 | import logging 11 | from Xlib import display, Xatom 12 | from auxiliary import utils 13 | 14 | # pylint: disable=invalid-name, no-member 15 | logger = logging.getLogger(__name__) 16 | 17 | 18 | def pin_to_desktop(name, pid): 19 | """Set window type to desktop window.""" 20 | # Similar to 21 | # os.system( 22 | # "xprop -id $(wmctrl -l -p | grep {} | grep {}".format(title, pid) 23 | # + " | cut -d' ' -f 1) -f _NET_WM_WINDOW_TYPE 32a " 24 | # + "-set _NET_WM_WINDOW_TYPE _NET_WM_WINDOW_TYPE_DESKTOP") 25 | disp = display.Display() 26 | screen = disp.screen() 27 | root = screen.root 28 | 29 | def traverse_and_search(name, pid, window=root, level=0): 30 | """ 31 | Traverse the tree of windows and store matching window id to a 32 | function attribute. 33 | """ 34 | try: 35 | window_name = window.get_wm_name() 36 | except TypeError as e: 37 | logger.debug(e) 38 | window_name = "..." 39 | pid_prop = window.get_full_property(disp.intern_atom('_NET_WM_PID'), 0) 40 | window_pid = pid_prop.value[0] if pid_prop else "" 41 | # logger.debug(" "*level + "{} {}".format(window_name, window_pid)) 42 | 43 | if window_name == name and window_pid == pid: 44 | traverse_and_search.result = window.id 45 | 46 | for child in window.query_tree().children: 47 | traverse_and_search(name, pid, child, level + 1) 48 | 49 | traverse_and_search(name, pid) 50 | win = disp.create_resource_object("window", traverse_and_search.result) 51 | atom_wm_type = disp.intern_atom('_NET_WM_WINDOW_TYPE') 52 | atom_wm_type_desktop = disp.intern_atom('_NET_WM_WINDOW_TYPE_DESKTOP') 53 | logger.debug("atom_wm_type_desktop: {}".format(atom_wm_type_desktop)) 54 | a = str(win.get_full_property(atom_wm_type, 0)) 55 | win.change_property(atom_wm_type, Xatom.ATOM, 32, [atom_wm_type_desktop]) 56 | b = str(win.get_full_property(atom_wm_type, 0)) 57 | logger.debug("\n{}\n--->\n{}".format(a, utils.highlight_changes(a, b))) 58 | disp.flush() 59 | -------------------------------------------------------------------------------- /avs/input/portaudio.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | # Based on 9 | # http://www.swharden.com/wp/2013-05-09-realtime-fft-audio-visualization-with-python/ # noqa pylint: disable=line-too-long 10 | # by Scott W Harden 11 | 12 | """ 13 | Record soundcard output using WASAPI loopback capture. Requires forked PyAudio 14 | and PortAudio: . 15 | """ 16 | 17 | import collections 18 | import threading 19 | import pyaudio 20 | 21 | 22 | class Portrecorder(object): 23 | """Record audio to a ring buffer.""" 24 | 25 | def __init__(self, name, chunks, chunksize=1024, channels=2, rate="auto"): 26 | self.elements_per_ringbuffer = chunks 27 | self.frames_per_element = chunksize 28 | self.samples_per_frame = channels 29 | self.bytes_per_sample = 2 # int16 30 | self.name = name 31 | self.channels = channels 32 | self._ringbuffer = collections.deque( 33 | [b"0"*self.bytes_per_sample*channels*chunksize]*chunks, 34 | maxlen=self.elements_per_ringbuffer) 35 | 36 | self.p = pyaudio.PyAudio() # pylint: disable=invalid-name 37 | default_output = self.p.get_default_output_device_info() 38 | self.deviceindex = default_output['index'] 39 | if rate == "auto": 40 | self.rate = default_output['defaultSampleRate'] 41 | else: 42 | self.rate = rate 43 | self.has_new_audio = False 44 | 45 | def start(self): 46 | """Start recording.""" 47 | stream = self.p.open( 48 | format=pyaudio.paInt16, 49 | channels=self.channels, 50 | rate=int(self.rate), 51 | input=True, 52 | frames_per_buffer=self.frames_per_element, 53 | input_device_index=int(self.deviceindex), 54 | as_loopback=True 55 | ) 56 | 57 | def record(): 58 | """Continuously read data and append to the ring buffer.""" 59 | while True: 60 | audio_string = stream.read(self.frames_per_element) 61 | self._ringbuffer.append(audio_string) 62 | self.has_new_audio = True 63 | 64 | thread = threading.Thread(target=record) 65 | thread.start() 66 | 67 | @property 68 | def ringbuffer(self): 69 | """Get the ring buffer.""" 70 | self.has_new_audio = False 71 | return self._ringbuffer 72 | -------------------------------------------------------------------------------- /avs/auxiliary/windows.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """Windows-specific code.""" 9 | 10 | # pylint: disable=import-error 11 | import win32api 12 | import win32con 13 | import win32gui 14 | 15 | 16 | class Kludges(object): 17 | """Workarounds.""" 18 | 19 | def __init__(self, title): 20 | self.topmost = not self.is_desktop_on_foreground() 21 | self.hwnd = win32gui.FindWindow(None, title) 22 | 23 | def is_desktop_on_foreground(self): # pylint: disable=no-self-use 24 | """Detect "show desktop" or something close enough.""" 25 | foreground = win32gui.GetForegroundWindow() 26 | return bool( 27 | foreground and win32gui.GetClassName(foreground) == "WorkerW") 28 | 29 | def stay_on_bottom(self): 30 | """Pin to desktop or something close enough (call repeatedly).""" 31 | if self.is_desktop_on_foreground(): 32 | if self.topmost is False: 33 | win32gui.SetWindowPos( 34 | self.hwnd, win32con.HWND_TOPMOST, 0, 0, 0, 0, 35 | win32con.SWP_NOSIZE | win32con.SWP_NOMOVE) 36 | self.topmost = True 37 | else: 38 | if self.topmost is True: 39 | win32gui.SetWindowPos( 40 | self.hwnd, win32con.HWND_BOTTOM, 0, 0, 0, 0, 41 | win32con.SWP_NOSIZE | win32con.SWP_NOMOVE) 42 | self.topmost = False 43 | 44 | # "To prevent the window button from being placed on the taskbar, create 45 | # the unowned window with the WS_EX_TOOLWINDOW extended style. As an 46 | # alternative, you can create a hidden window and make this hidden window 47 | # the owner of your visible window. The Shell will remove a window's button 48 | # from the taskbar only if the window's style supports visible taskbar 49 | # buttons. If you want to dynamically change a window's style to one that 50 | # doesn't support visible taskbar buttons, you must hide the window first 51 | # (by calling ShowWindow with SW_HIDE), change the window style, and then 52 | # show the window." 53 | # -- https://msdn.microsoft.com/en-us/library/bb776822%28v=vs.85%29.aspx 54 | def remove_taskbar_button(self): 55 | """Hide window from taskbar and ALT+TAB dialog.""" 56 | win32gui.ShowWindow(self.hwnd, win32con.SW_HIDE) 57 | win32api.SetWindowLong( 58 | self.hwnd, win32con.GWL_EXSTYLE, 59 | win32api.GetWindowLong(self.hwnd, win32con.GWL_EXSTYLE) 60 | | win32con.WS_EX_NOACTIVATE 61 | | win32con.WS_EX_TOOLWINDOW) 62 | win32gui.ShowWindow(self.hwnd, win32con.SW_SHOW) 63 | -------------------------------------------------------------------------------- /avs/process/generic.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """General-purpose functions related to audio processing.""" 9 | 10 | import audioop 11 | import logging 12 | import re 13 | import numpy as np 14 | 15 | logger = logging.getLogger(__name__) # pylint: disable=invalid-name 16 | 17 | 18 | def rms(audio_fragment, sample_width_in_bytes=2): 19 | """Given audio fragment, return the root mean square.""" 20 | # Equal to 21 | # return int(np.sqrt(np.mean(np.square( 22 | # np.absolute(audio_fragment.astype(np.float)))))) 23 | return audioop.rms(np.abs(audio_fragment), sample_width_in_bytes) 24 | 25 | 26 | def notespace(spn_start, spn_end, step=1.0, start_offset=0.0, end_offset=0.0): 27 | """ 28 | Given note endpoints in scientific pitch notation, return frequencies 29 | spaced evenly on a log scale. 30 | """ 31 | # pylint: disable=invalid-name 32 | 33 | def n(spn): 34 | """ 35 | Given note in scientific pitch notation, return semitone distance from 36 | A4. 37 | """ 38 | m = re.match(r"([A-G]+#*)(-*\d+)", spn) 39 | name = m.group(1) 40 | octave = int(m.group(2)) 41 | note_names = [ 42 | "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B" 43 | ] 44 | return note_names.index(name)-9 + (octave-4)*12 45 | 46 | def f(n): 47 | """ 48 | Given semitone distance from A4 and assuming A440 pitch standard, 49 | return frequency in hertz. 50 | """ 51 | return 2.0**(n/12.0) * 440.0 52 | 53 | n_start = n(spn_start) + start_offset 54 | n_end = n(spn_end) + end_offset 55 | sample_count = abs(n_end - n_start)/step + 1 56 | logger.debug( 57 | "notespace - f(n_start): {}, f(n_end): {}, sample_count: {}".format( 58 | f(n_start), f(n_end), sample_count)) 59 | return [f(n) for n in np.linspace(n_start, n_end, sample_count)] 60 | 61 | 62 | def a_weight(x_coordinates): 63 | """Return A-weighting fitted to the given frequency dimension.""" 64 | a_weight_frequency = [ 65 | 10, 12.5, 16, 20, 25, 31.5, 40, 50, 66 | 63, 80, 100, 125, 160, 200, 250, 315, 67 | 400, 500, 630, 800, 1000, 1250, 1600, 2000, 68 | 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500, 69 | 16000, 20000 70 | ] 71 | a_weight_decibels = [ 72 | -70.4, -63.4, -56.7, -50.5, -44.7, -39.4, -34.6, -30.2, 73 | -26.2, -22.5, -19.1, -16.1, -13.4, -10.9, -8.6, -6.6, 74 | -4.8, -3.2, -1.9, -0.8, 0.0, 0.6, 1.0, 1.2, 75 | 1.3, 1.2, 1.0, 0.5, -0.1, -1.1, -2.5, -4.3, 76 | -6.6, -9.3 77 | ] 78 | return np.interp(x_coordinates, a_weight_frequency, a_weight_decibels) 79 | -------------------------------------------------------------------------------- /avs/avs.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | # -*- coding: utf-8 -*- 3 | # 4 | # Copyright (C) 2016 Okko Hartikainen 5 | # 6 | # This file is part of audio-visualizer-screenlet, which is licensed under the 7 | # GNU General Public License 3.0 or later. See COPYING. 8 | 9 | """Cross-platform audio visualizer desktop widget.""" 10 | 11 | # pylint: disable=wrong-import-position, ungrouped-imports 12 | from __future__ import division 13 | import sys 14 | sys.dont_write_bytecode = True # noqa 15 | import logging 16 | import os 17 | import signal 18 | import output.vispyqt 19 | from auxiliary import conf, utils 20 | from process.audio_processor import AudioProcessor 21 | if os.name == "nt": 22 | from input.portaudio import Portrecorder as Recorder 23 | from auxiliary import windows 24 | else: 25 | from input.pulseaudio import Pulserecorder as Recorder 26 | from auxiliary import gnu 27 | 28 | TITLE = "audio-visualizer-screenlet" 29 | 30 | 31 | def main(): 32 | """Main function.""" 33 | signal.signal(signal.SIGINT, signal.SIG_DFL) 34 | args = conf.parse_command_line_args() 35 | conf.setup_logging(args.loglevel) 36 | logger = logging.getLogger(__name__) 37 | configs = conf.Configs(TITLE) 38 | 39 | recorder = Recorder( 40 | TITLE, 41 | chunks=configs.settings.getint('recorder', 'chunks'), 42 | chunksize=configs.settings.getint('recorder', 'chunksize'), 43 | channels=configs.settings.getint('recorder', 'channels'), 44 | rate=configs.settings.get('recorder', 'rate'), 45 | ) 46 | audio_processor = AudioProcessor( 47 | configs, 48 | chunks=recorder.elements_per_ringbuffer, 49 | chunksize=recorder.frames_per_element, 50 | channels=recorder.channels, 51 | rate=recorder.rate, 52 | ) 53 | visualizer = output.vispyqt.Visualizer( 54 | TITLE, 55 | configs, 56 | audio_processor, 57 | ) 58 | 59 | # Pin to desktop 60 | pid = os.getpid() 61 | logger.debug("PID: {}".format(pid)) 62 | if os.name == "nt": 63 | win_kludges = windows.Kludges(TITLE) 64 | win_kludges.remove_taskbar_button() 65 | win_timer = utils.RepeatingTimer( 66 | interval=0.1, 67 | function=win_kludges.stay_on_bottom) 68 | win_timer.start() 69 | else: 70 | gnu.pin_to_desktop(TITLE, pid) 71 | 72 | def update(): 73 | """Pass data from recorder via processor to visualizer.""" 74 | if recorder.has_new_audio: 75 | audio_processor.set_audio(recorder.ringbuffer) 76 | fft_amplitudes = audio_processor.log_frequency_spectrum() 77 | visualizer.set_data(fft_amplitudes) 78 | 79 | # Run 80 | recorder.start() 81 | timer = utils.RepeatingTimer( 82 | interval=1.0/configs.settings.getfloat('main', 'timer_frequency'), 83 | function=update 84 | ) 85 | timer.start() 86 | visualizer.run() 87 | 88 | 89 | if __name__ == "__main__" and sys.flags.interactive == 0: 90 | main() 91 | -------------------------------------------------------------------------------- /avs/process/audio_processor.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """Audio processor.""" 9 | 10 | import logging 11 | import multiprocessing 12 | import numpy as np 13 | from scipy.interpolate import Akima1DInterpolator 14 | import pyfftw 15 | import process.generic 16 | 17 | # pylint: disable=invalid-name 18 | logger = logging.getLogger(__name__) 19 | 20 | 21 | # pylint: disable=no-name-in-module, attribute-defined-outside-init, no-member 22 | class AudioProcessor(object): 23 | """Process audio.""" 24 | 25 | def __init__(self, configs, chunks, chunksize, channels, rate): 26 | self.configs = configs 27 | self.channels = channels 28 | self.chunksize = chunksize 29 | self.channel_len = chunks*chunksize 30 | self.fft_len = self.channel_len//2 + 1 # See numpy.fft.rfft 31 | self.fft_freqs_in_hertz = np.fft.rfftfreq(self.channel_len, d=1.0/rate) 32 | endpoint_notes = configs.settings.getmultistr('fft', 'endpoint_notes') 33 | self.notespace = process.generic.notespace( 34 | endpoint_notes[0], endpoint_notes[1], 35 | step=1.0/6) # XXX 36 | self.window = np.hanning(self.channel_len) 37 | self.sensitivity = configs.settings.getfloat('fft', 'sensitivity') 38 | self.compute_weights(self.sensitivity) 39 | 40 | logger.debug("FFT length: {}".format(self.fft_len)) 41 | 42 | # Create a pyfftw.FFTW object 43 | a = pyfftw.empty_aligned( 44 | self.channel_len, dtype='int16', n=pyfftw.simd_alignment) 45 | self.fft = pyfftw.builders.rfft( 46 | a, overwrite_input=True, threads=multiprocessing.cpu_count()) 47 | 48 | def set_audio(self, ringbuffer_data): 49 | """Convert and store given audio data to instance variables.""" 50 | audio_string = b"".join(list(ringbuffer_data)) 51 | audio_array = np.fromstring(audio_string, dtype=np.int16) 52 | if self.channels == 2: 53 | a = np.reshape(audio_array, (self.channel_len, self.channels)) 54 | self.audio_left = a[:, 0] 55 | self.audio_right = a[:, 1] 56 | self.audio_mono = a.mean(axis=1, dtype=np.int32).astype(np.int16) 57 | elif self.channels == 1: 58 | self.audio_left = self.audio_right = self.audio_mono = audio_array 59 | else: 60 | raise ValueError( 61 | "Invalid number of channels ({})".format(self.channels)) 62 | 63 | def compute_weights(self, sensitivity): 64 | """Compute weights based on settings and given sensitivity.""" 65 | logger.debug("Sensitivity: {}".format(sensitivity)) 66 | self.weights = sensitivity/(2**20) 67 | self.weights *= 1/np.sqrt(self.channel_len) # Unitary normalization 68 | self.weights *= self.configs.settings.getint('canvas', 'height') 69 | a_db = (process.generic.a_weight(self.notespace) 70 | * self.configs.settings.getfloat('fft', 'a-weighting')) 71 | self.weights *= 10**(a_db/20) # dB to gain-multiplier 72 | 73 | def increase_sensitivity(self): 74 | """Increase sensitivity in a logarithmic fashion.""" 75 | if self.sensitivity < 500: 76 | self.sensitivity *= 1.2 77 | self.compute_weights(self.sensitivity) 78 | 79 | def decrease_sensitivity(self): 80 | """Decrease sensitivity in a logarithmic fashion.""" 81 | if self.sensitivity > 0.5: 82 | self.sensitivity /= 1.2 83 | self.compute_weights(self.sensitivity) 84 | 85 | def log_frequency_spectrum(self): 86 | """Return amplitude spectrum in logarithmic frequency space.""" 87 | self.fft.input_array[:] = np.multiply(self.audio_mono, self.window) 88 | amplitudes = np.absolute(self.fft()) 89 | interp = Akima1DInterpolator(self.fft_freqs_in_hertz, amplitudes) 90 | return np.multiply(interp(self.notespace), self.weights) 91 | 92 | def rms_stereo(self): 93 | """Return the root mean square of left and right channels.""" 94 | rms_left = process.generic.rms(self.audio_left[:self.chunksize]) 95 | rms_right = process.generic.rms(self.audio_right[:self.chunksize]) 96 | return rms_left, rms_right 97 | -------------------------------------------------------------------------------- /avs/input/pulseaudio.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | # Based on 9 | # https://github.com/gooofy/nlp/blob/185466517c291a300dd0950548d4793401c32b01/pulseclient.py # noqa pylint: disable=line-too-long 10 | # by Guenter Bartsch 11 | 12 | """Record soundcard output using PulseAudio simple API.""" 13 | 14 | import collections 15 | import ctypes 16 | import logging 17 | import os 18 | import re 19 | import threading 20 | 21 | # pylint: disable=invalid-name 22 | logger = logging.getLogger(__name__) 23 | 24 | 25 | # pylint: disable=missing-docstring, too-few-public-methods, protected-access 26 | pa = ctypes.cdll.LoadLibrary("libpulse-simple.so.0") 27 | 28 | PA_STREAM_RECORD = 2 29 | PA_SAMPLE_S16LE = 3 30 | 31 | 32 | class struct_pa_sample_spec(ctypes.Structure): 33 | __slots__ = [ 34 | 'format', 35 | 'rate', 36 | 'channels', 37 | ] 38 | 39 | struct_pa_sample_spec._fields_ = [ 40 | ('format', ctypes.c_int), 41 | ('rate', ctypes.c_uint32), 42 | ('channels', ctypes.c_uint8), 43 | ] 44 | 45 | pa_sample_spec = struct_pa_sample_spec # /usr/include/pulse/sample.h:174 46 | 47 | 48 | class struct_pa_buffer_attr(ctypes.Structure): 49 | __slots__ = [ 50 | 'maxlength', 51 | 'tlength', 52 | 'prebuf', 53 | 'minreq', 54 | 'fragsize', 55 | ] 56 | 57 | struct_pa_buffer_attr._fields_ = [ 58 | ('maxlength', ctypes.c_uint32), 59 | ('tlength', ctypes.c_uint32), 60 | ('prebuf', ctypes.c_uint32), 61 | ('minreq', ctypes.c_uint32), 62 | ('fragsize', ctypes.c_uint32), 63 | ] 64 | 65 | pa_buffer_attr = struct_pa_buffer_attr # /usr/include/pulse/def.h:221 66 | 67 | 68 | class Pulserecorder(object): 69 | """Record audio to a ring buffer.""" 70 | 71 | def __init__(self, name, chunks, chunksize=1024, channels=2, rate=44100): 72 | self.elements_per_ringbuffer = chunks 73 | self.frames_per_element = chunksize 74 | self.samples_per_frame = channels 75 | self.bytes_per_sample = 2 # int16 76 | self.name = name.encode('ascii') 77 | self.channels = channels 78 | self.has_new_audio = False 79 | self.bytes_per_element = chunksize*channels*self.bytes_per_sample 80 | self.buf = ctypes.create_string_buffer(self.bytes_per_element) 81 | self._ringbuffer = collections.deque( 82 | [self.buf.raw]*chunks, maxlen=self.elements_per_ringbuffer) 83 | 84 | def pacmd_stat(o): 85 | """Get PulseAudio memory block statistics.""" 86 | command = "pacmd stat | awk -F': ' '/^" + o + ": /{print $2}'" 87 | ret = os.popen(command).readline() 88 | return ret.rstrip() 89 | 90 | default_sample_spec = pacmd_stat("Default sample spec").split() 91 | default_rate = int(re.sub("[^0-9]", "", default_sample_spec[2])) 92 | self.rate = default_rate if rate == "auto" else rate 93 | self.device = ( 94 | pacmd_stat("Default sink name") + ".monitor").encode('ascii') 95 | logger.debug("{}, rate: {} Hz".format(self.device, self.rate)) 96 | 97 | # pylint: disable=attribute-defined-outside-init 98 | def start(self): 99 | """Start recording.""" 100 | ss = struct_pa_sample_spec() 101 | ss.rate = self.rate 102 | ss.channels = self.channels 103 | ss.format = PA_SAMPLE_S16LE 104 | 105 | error = ctypes.c_int(0) 106 | 107 | # pylint: disable=bad-whitespace 108 | ba = struct_pa_buffer_attr() 109 | ba.maxlength = -1 110 | ba.tlength = -1 111 | ba.prebuf = -1 112 | ba.minreq = -1 113 | ba.fragsize = -1 114 | 115 | class struct_pa_simple(ctypes.Structure): 116 | pass 117 | pa.pa_simple_new.restype = ctypes.POINTER(struct_pa_simple) 118 | 119 | stream = pa.pa_simple_new( 120 | None, # Server name, or NULL for default. 121 | self.name, # Client name. 122 | PA_STREAM_RECORD, # Record or playback. 123 | self.device, # Sink name, or NULL for default. 124 | b"record", # Stream name. 125 | ctypes.byref(ss), # Sample format. 126 | None, # Channel map, or NULL for default. 127 | ctypes.byref(ba), # Buffering attributes, or NULL for default. 128 | ctypes.byref(error) # A pointer where the error code is stored. 129 | ) 130 | 131 | if not stream: 132 | raise Exception("pa_simple_new() failed: {}".format( 133 | pa.strerror(ctypes.byref(error)))) 134 | 135 | def record(): 136 | """Continuously read data and append to the ring buffer.""" 137 | while True: 138 | if pa.pa_simple_read( 139 | stream, self.buf, self.bytes_per_element, error): 140 | raise Exception("pa_simple_read() failed") 141 | self._ringbuffer.append(self.buf.raw) 142 | self.has_new_audio = True 143 | 144 | thread = threading.Thread(target=record) 145 | thread.start() 146 | 147 | @property 148 | def ringbuffer(self): 149 | """Get the ring buffer.""" 150 | self.has_new_audio = False 151 | return self._ringbuffer 152 | -------------------------------------------------------------------------------- /avs/output/vispyqt.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """Visual output module that uses Vispy with Qt5 app backend.""" 9 | 10 | import logging 11 | import os 12 | import random 13 | import time 14 | import numpy as np 15 | from vispy import app, scene 16 | 17 | # pylint: disable=invalid-name, no-member 18 | logger = logging.getLogger(__name__) 19 | 20 | 21 | class Visualizer(object): 22 | """Visualize audio.""" 23 | 24 | def __init__(self, title, configs, audio_processor): 25 | self.configs = configs 26 | self.audio_processor = audio_processor 27 | number_of_spectrum_samples = len(audio_processor.notespace) 28 | self.mouse_pressed = None 29 | self.mouse_press_x = None 30 | self.mouse_press_y = None 31 | 32 | # canvas 33 | self.canvas_width = configs.settings.getint('canvas', 'width') 34 | self.canvas_height = configs.settings.getint('canvas', 'height') 35 | self.canvas_padding = configs.settings.getint('canvas', 'padding') 36 | self.canvas_background_color = configs.settings.getmultifloat( 37 | 'canvas', 'background_color') 38 | self.canvas = scene.SceneCanvas( 39 | title=title, 40 | size=(self.canvas_width, self.canvas_height), 41 | keys='interactive', 42 | decorate=False, 43 | bgcolor=self.canvas_background_color, 44 | app='PyQt5', 45 | ) 46 | self.canvas.connect(self.on_mouse_press) 47 | self.canvas.connect(self.on_mouse_release) 48 | self.canvas.connect(self.on_mouse_move) 49 | self.canvas.connect(self.on_mouse_wheel) 50 | self.canvas.connect(self.on_key_press) 51 | self.canvas.show() 52 | self.canvas.measure_fps(1, callback=lambda x: None) 53 | try: 54 | self.canvas_x = int(configs.load_state_value('canvas', 'x')) 55 | self.canvas_y = int(configs.load_state_value('canvas', 'y')) 56 | except ValueError as e: 57 | logger.warning(e) 58 | else: 59 | self.canvas.position = (self.canvas_x, self.canvas_y) 60 | 61 | # spectrum 62 | self.spectrum_x = self.canvas_padding 63 | self.spectrum_y = self.canvas_height - self.canvas_padding 64 | self.spectrum_width = self.canvas_width - 2*self.canvas_padding 65 | self.spectrum_color = configs.settings.getmultifloat( 66 | 'spectrum', 'color') 67 | self.spectrum_pos = np.empty( 68 | (number_of_spectrum_samples, 2), np.float32) 69 | self.spectrum_pos[:, 0] = self.spectrum_x + np.linspace( 70 | 0, self.spectrum_width, number_of_spectrum_samples) 71 | self.spectrum_pos[:, 1] = self.spectrum_y 72 | self.spectrum = scene.visuals.Line( 73 | pos=self.spectrum_pos, 74 | color=self.spectrum_color, 75 | parent=self.canvas.scene, 76 | antialias=True, 77 | method='agg', 78 | width=configs.settings.getfloat('spectrum', 'line_width')) 79 | 80 | @staticmethod 81 | def run(): 82 | """Enter the native GUI event loop.""" 83 | app.run() 84 | 85 | def set_data(self, fft_amplitudes): 86 | """Update visuals.""" 87 | self.spectrum_pos[:, 1] = self.spectrum_y - fft_amplitudes 88 | self.spectrum.set_data(pos=self.spectrum_pos) 89 | 90 | def on_mouse_press(self, event): 91 | """Handle mouse press events.""" 92 | # Initiate mouse drag. 93 | self.mouse_pressed = True 94 | self.mouse_press_x = event.native.globalX() - self.canvas.position[0] 95 | self.mouse_press_y = event.native.globalY() - self.canvas.position[1] 96 | 97 | def on_mouse_release(self, event): # pylint: disable=unused-argument 98 | """Handle mouse release events.""" 99 | # Complete mouse drag. 100 | self.mouse_pressed = False 101 | self.configs.save_state_value( 102 | 'canvas', 'x', str(self.canvas.position[0])) 103 | self.configs.save_state_value( 104 | 'canvas', 'y', str(self.canvas.position[1])) 105 | 106 | def on_mouse_move(self, event): 107 | """Handle mouse move events.""" 108 | # Drag canvas. 109 | if self.mouse_pressed: 110 | diff_x = event.native.globalX() - self.mouse_press_x 111 | diff_y = event.native.globalY() - self.mouse_press_y 112 | self.canvas.position = (diff_x, diff_y) 113 | if os.environ.get('XDG_SESSION_TYPE') == "wayland": 114 | time.sleep(0.07) # XXX: Jumpy otherwise. 115 | 116 | def on_mouse_wheel(self, event): 117 | """Handle mouse wheel events.""" 118 | if event.delta[1] == 1: 119 | self.audio_processor.increase_sensitivity() 120 | else: 121 | self.audio_processor.decrease_sensitivity() 122 | 123 | def on_key_press(self, event): 124 | """Handle key press events.""" 125 | modifiers = [key.name for key in event.modifiers] 126 | logger.debug("Key pressed - text: {}, key: {}, modifiers: {}".format( 127 | event.text, event.key.name, modifiers)) 128 | if event.text == "f": 129 | logger.debug("{:.1f} FPS".format(self.canvas.fps)) 130 | elif event.text == "c": 131 | self.spectrum.set_data( 132 | color=(random.random(), random.random(), random.random(), 1)) 133 | elif event.text == "C": 134 | self.spectrum.set_data( 135 | color=self.spectrum_color) 136 | -------------------------------------------------------------------------------- /avs/auxiliary/conf.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | # 3 | # Copyright (C) 2016 Okko Hartikainen 4 | # 5 | # This file is part of audio-visualizer-screenlet, which is licensed under the 6 | # GNU General Public License 3.0 or later. See COPYING. 7 | 8 | """Configuration-related classes and functions.""" 9 | 10 | # pylint: disable=import-error 11 | from pathlib import Path 12 | import argparse 13 | import logging 14 | import logging.config 15 | import os 16 | from six.moves import configparser 17 | from watchdog.observers import Observer 18 | from watchdog.events import PatternMatchingEventHandler 19 | from auxiliary import utils 20 | 21 | logger = logging.getLogger(__name__) # pylint: disable=invalid-name 22 | 23 | 24 | def parse_command_line_args(): 25 | """Define and parse command-line options.""" 26 | parser = argparse.ArgumentParser() 27 | parser.add_argument( 28 | "-d", "--debug", 29 | help="enable DEBUG logging level", 30 | action="store_const", dest="loglevel", const=logging.DEBUG, 31 | default=logging.INFO, 32 | ) 33 | args = parser.parse_args() 34 | return args 35 | 36 | 37 | def setup_logging(loglevel): 38 | """Set up logging configuration.""" 39 | logging_config = dict( 40 | version=1, 41 | disable_existing_loggers=False, 42 | formatters={ 43 | 'f': { 44 | 'format': 45 | "%(asctime)s %(levelname)s %(name)s - %(message)s", 46 | 'datefmt': "%F %T"}}, 47 | handlers={ 48 | 'h': { 49 | 'class': "logging.StreamHandler", 50 | 'formatter': "f", 51 | 'level': loglevel}}, 52 | root={ 53 | 'handlers': ["h"], 54 | 'level': loglevel}, 55 | ) 56 | logging.config.dictConfig(logging_config) 57 | 58 | 59 | class Configs(object): 60 | """Handle config files.""" 61 | 62 | def __init__(self, title): 63 | # Configuration path. 64 | if 'LOCALAPPDATA' in os.environ: 65 | self.app_config_path = Path(os.environ['LOCALAPPDATA']) / title 66 | elif 'XDG_CONFIG_HOME' in os.environ: 67 | self.app_config_path = Path(os.environ['XDG_CONFIG_HOME']) / title 68 | else: 69 | self.app_config_path = Path(os.environ['HOME']) / ".config" / title 70 | logger.info("Config path: {}".format(self.app_config_path)) 71 | 72 | # Load and merge options from default_settings.ini and settings.ini. 73 | self.settings = MyConfigParser() 74 | script_path = Path(__file__).parent 75 | defaults_file = script_path / "default_settings.ini" 76 | try: 77 | self.settings.read_file(defaults_file.open()) 78 | except AttributeError: 79 | self.settings.readfp(defaults_file.open()) # deprecated 80 | self.settings_file = self.app_config_path / "settings.ini" 81 | self.settings.read(str(self.settings_file)) 82 | 83 | # Create settings.ini if missing. 84 | if not self.settings_file.is_file(): 85 | self.settings_file.parent.mkdir(parents=True,exist_ok=True) 86 | with self.settings_file.open('w') as configfile: 87 | self.settings.write(configfile) 88 | 89 | # Load state.ini. 90 | self.state_file = self.app_config_path / "state.ini" 91 | self.state = MyConfigParser() 92 | self.state.read(str(self.state_file)) 93 | 94 | # Set up watchdog to monitor file system events. 95 | path = self.app_config_path 96 | event_handler = MyWatchdogHandler(patterns=[str(self.settings_file)]) 97 | observer = Observer() 98 | observer.schedule(event_handler, str(path), recursive=False) 99 | observer.start() 100 | 101 | def load_state_value(self, section, option): 102 | """Load value from state.""" 103 | try: 104 | logger.debug("Loading state [{}] {}".format(section, option)) 105 | return self.state.get(section, option) 106 | except (configparser.NoSectionError, configparser.NoOptionError): 107 | raise ValueError("State not saved or invalid.") 108 | 109 | def save_state_value(self, section, option, value): 110 | """Save value to state.""" 111 | logger.debug("Saving state [{}] {}: {}".format(section, option, value)) 112 | if not self.state.has_section(section): 113 | logger.debug("Adding section [{}] to state".format(section)) 114 | self.state.add_section(section) 115 | self.state.set(section, option, value) 116 | with self.state_file.open('w') as configfile: 117 | self.state.write(configfile) 118 | 119 | 120 | class MyConfigParser(configparser.ConfigParser): 121 | """ConfigParser with added convenience methods.""" 122 | # pylint: disable=too-many-ancestors, no-member 123 | 124 | def getmultifloat(self, section, option): 125 | """Return comma-separated values as a list of floats.""" 126 | value = self.get(section, option) 127 | return [float(x) for x in value.replace(" ", "").split(",")] 128 | 129 | def getmultistr(self, section, option): 130 | """Return comma-separated values as a list of strings.""" 131 | value = self.get(section, option) 132 | return [str(x) for x in value.replace(" ", "").split(",")] 133 | 134 | 135 | class MyWatchdogHandler(PatternMatchingEventHandler): 136 | """ 137 | Trigger program restart if given patterns match with file paths associated 138 | with occurring events. 139 | """ 140 | ignore_directories = True 141 | 142 | def on_any_event(self, event): 143 | logger.info("Restarting...") 144 | utils.restart_program() 145 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------