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oledui.py
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oledui.py
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#!/usr/bin/python
from __future__ import unicode_literals
"""
Volumio User Interface: OLED 256x64 + 2x rotary encoder with pushbutton
DiehardSK 2020
Inspired by Volumio HandsOn script
"""
import requests
import os
import sys
import json
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
from time import time, sleep
from threading import Thread
from socketIO_client import SocketIO
# Imports for OLED display
from luma.core.interface.serial import spi
from luma.oled.device import ssd1322
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont
from modules.pushbutton import PushButton
from modules.rotaryencoder import RotaryEncoder
from modules.display import *
volumio_host = 'localhost'
volumio_port = 3000
VOLUME_DT = 5 #volume adjustment step
volumioIO = SocketIO(volumio_host, volumio_port)
STATE_NONE = -1
STATE_PLAYER = 0
STATE_PLAYLIST_MENU = 1
STATE_QUEUE_MENU = 2
STATE_VOLUME = 3
STATE_SHOW_INFO = 4
STATE_LIBRARY_MENU = 5
UPDATE_INTERVAL = 0.034
PIXEL_SHIFT_TIME = 120 #time between picture position shifts in sec.
interface = spi(device=0, port=0)
oled = ssd1322(interface)
oled.WIDTH = 256
oled.HEIGHT = 64
oled.state = STATE_NONE
oled.stateTimeout = 0
oled.timeOutRunning = False
oled.activeSong = ''
oled.activeArtist = 'VOLuMIO'
oled.playState = 'unknown'
oled.playPosition = 0
oled.modal = False
oled.playlistoptions = []
oled.queue = []
oled.libraryFull = []
oled.libraryNames = []
oled.volumeControlDisabled = False
oled.volume = 100
emit_volume = False
emit_track = False
image = Image.new('RGB', (oled.WIDTH + 4, oled.HEIGHT + 4)) #enlarged for pixelshift
oled.clear()
font = load_font('Roboto-Regular.ttf', 24)
font2 = load_font('PixelOperator.ttf', 15)
hugefontaw = load_font('fa-solid-900.ttf', oled.HEIGHT - 4)
def display_update_service():
pixshift = [2, 2]
lastshift = prevTime = time()
while UPDATE_INTERVAL > 0:
dt = time() - prevTime
prevTime = time()
if prevTime-lastshift > PIXEL_SHIFT_TIME: #it's time for pixel shift
lastshift = prevTime
if pixshift[0] == 4 and pixshift[1] < 4:
pixshift[1] += 1
elif pixshift[1] == 0 and pixshift[0] < 4:
pixshift[0] += 1
elif pixshift[0] == 0 and pixshift[1] > 0:
pixshift[1] -= 1
else:
pixshift[0] -= 1
# auto return to home display screen (from volume display / queue list..)
if oled.stateTimeout > 0:
oled.timeOutRunning = True
oled.stateTimeout -= dt
elif oled.stateTimeout <= 0 and oled.timeOutRunning:
oled.timeOutRunning = False
oled.stateTimeout = 0
SetState(STATE_PLAYER)
image.paste("black", [0, 0, image.size[0], image.size[1]])
try:
oled.modal.DrawOn(image)
except AttributeError:
print ("render error")
cimg = image.crop((pixshift[0], pixshift[1], pixshift[0] + oled.WIDTH, pixshift[1] + oled.HEIGHT))
oled.display(cimg)
sleep(UPDATE_INTERVAL)
def SetState(status):
oled.state = status
if oled.state == STATE_PLAYER:
oled.modal = NowPlayingScreen(oled.HEIGHT, oled.WIDTH, oled.activeArtist, oled.activeSong, font, hugefontaw)
oled.modal.SetPlayingIcon(oled.playState, 0)
elif oled.state == STATE_VOLUME:
oled.modal = VolumeScreen(oled.HEIGHT, oled.WIDTH, oled.volume, font, font2)
elif oled.state == STATE_PLAYLIST_MENU:
oled.modal = MenuScreen(oled.HEIGHT, oled.WIDTH, font2, oled.playlistoptions, rows=3, label='------ Select Playlist ------')
elif oled.state == STATE_QUEUE_MENU:
oled.modal = MenuScreen(oled.HEIGHT, oled.WIDTH, font2, oled.queue, rows=4, selected=oled.playPosition, showIndex=True)
elif oled.state == STATE_LIBRARY_MENU:
oled.modal = MenuScreen(oled.HEIGHT, oled.WIDTH, font2, oled.libraryNames, rows=3, label='------ Music Library ------')
def LoadPlaylist(playlistname):
print ("loading playlist: ", playlistname.encode('ascii', 'ignore'))
oled.playPosition = 0
volumioIO.emit('playPlaylist', {'name':playlistname})
SetState(STATE_PLAYER)
def onPushState(data):
#print(data)
if 'title' in data:
newSong = data['title']
else:
newSong = ''
if newSong is None:
newSong = ''
if 'artist' in data:
newArtist = data['artist']
else:
newArtist = ''
if newArtist is None: #volumio can push NoneType
newArtist = ''
if 'position' in data: # current position in queue
oled.playPosition = data['position'] # didn't work well with volumio ver. < 2.5
if 'status' in data:
newStatus = data['status']
if oled.state != STATE_VOLUME: #get volume on startup and remote control
try: #it is either number or unicode text
oled.volume = int(data['volume'])
except (KeyError, ValueError):
pass
if 'disableVolumeControl' in data:
oled.volumeControlDisabled = data['disableVolumeControl']
print(newSong.encode('ascii', 'ignore'))
if (newSong != oled.activeSong): # new song
oled.activeSong = newSong
oled.activeArtist = newArtist
if oled.state == STATE_PLAYER:
oled.modal.UpdatePlayingInfo(newArtist, newSong)
if newStatus != oled.playState:
oled.playState = newStatus
if oled.state == STATE_PLAYER:
if oled.playState == 'play':
iconTime = 35
else:
iconTime = 80
oled.modal.SetPlayingIcon(oled.playState, iconTime)
def onPushQueue(data):
oled.queue = [track['name'] if 'name' in track else 'no track' for track in data]
print('Queue length is ' + str(len(oled.queue)))
def onPushBrowseSources(data):
# print('Browse sources:')
# for item in data:
# print(item['uri'])
pass
def onLibraryBrowse(data):
oled.libraryFull = data
itemList = oled.libraryFull['navigation']['lists'][0]['items']
oled.libraryNames = [item['title'] if 'title' in item else 'empty' for item in itemList]
SetState(STATE_LIBRARY_MENU)
def EnterLibraryItem(itemNo):
try:
selectedItem = oled.libraryFull['navigation']['lists'][0]['items'][itemNo]
except IndexError:
LibraryReturn()
else:
print("Entering library item: ", oled.libraryNames[itemNo].encode('ascii', 'ignore'))
if selectedItem['type'][-8:] == 'category' or selectedItem['type'] == 'folder':
volumioIO.emit('browseLibrary',{'uri':selectedItem['uri']})
else:
print("Sending new Queue")
volumioIO.emit('clearQueue') #clear queue and add whole list of items
oled.queue = []
volumioIO.emit('addToQueue', oled.libraryFull['navigation']['lists'][0]['items'])
oled.stateTimeout = 5.0 #maximum time to load new queue
while len(oled.queue) == 0 and oled.stateTimeout > 0.1:
sleep(0.1)
oled.stateTimeout = 0.2
print("Play position = " + str(itemNo))
volumioIO.emit('play', {'value':itemNo})
def LibraryReturn(): #go to parent category
if not 'prev' in oled.libraryFull['navigation']:
SetState(STATE_PLAYER)
else:
parentCategory = oled.libraryFull['navigation']['prev']['uri']
print ("Navigating to parent category in library: ", parentCategory.encode('ascii', 'ignore'))
if parentCategory != '' and parentCategory != '/':
volumioIO.emit('browseLibrary',{'uri':parentCategory})
else:
SetState(STATE_PLAYER)
def onPushListPlaylist(data):
global oled
if len(data) > 0:
oled.playlistoptions = data
class NowPlayingScreen():
def __init__(self, height, width, row1, row2, font, fontaw):
self.height = height
self.width = width
self.font = font
self.fontaw = fontaw
self.playingText1 = StaticText(self.height, self.width, row1, font, center=True)
self.playingText2 = ScrollText(self.height, self.width, row2, font)
self.icon = {'play':'\uf04b', 'pause':'\uf04c', 'stop':'\uf04d'}
self.playingIcon = self.icon['play']
self.iconcountdown = 0
self.text1Pos = (3, 6)
self.text2Pos = (3, 37)
self.alfaimage = Image.new('RGBA', image.size, (0, 0, 0, 0))
def UpdatePlayingInfo(self, row1, row2):
self.playingText1 = StaticText(self.height, self.width, row1, font, center=True)
self.playingText2 = ScrollText(self.height, self.width, row2, font)
def DrawOn(self, image):
if self.playingIcon != self.icon['stop']:
self.playingText1.DrawOn(image, self.text1Pos)
self.playingText2.DrawOn(image, self.text2Pos)
if self.iconcountdown > 0:
compositeimage = Image.composite(self.alfaimage, image.convert('RGBA'), self.alfaimage)
image.paste(compositeimage.convert('RGB'), (0, 0))
self.iconcountdown -= 1
def SetPlayingIcon(self, state, time=0):
if state in self.icon:
self.playingIcon = self.icon[state]
self.alfaimage.paste((0, 0, 0, 0), [0, 0, image.size[0], image.size[1]])
drawalfa = ImageDraw.Draw(self.alfaimage)
iconwidth, iconheight = drawalfa.textsize(self.playingIcon, font=self.fontaw)
left = (self.width - iconwidth) / 2
drawalfa.text((left, 4), self.playingIcon, font=self.fontaw, fill=(255, 255, 255, 96))
self.iconcountdown = time
class VolumeScreen():
def __init__(self, height, width, volume, font, font2):
self.height = height
self.width = width
self.font = font
self.font2 = font2
self.volumeLabel = None
self.labelPos = (10, 5)
self.volumeNumber = None
self.numberPos = (10, 25)
self.barHeight = 22
self.barWidth = 140
self.volumeBar = Bar(self.height, self.width, self.barHeight, self.barWidth)
self.barPos = (85, 27)
self.volume = 0
self.DisplayVolume(volume)
def DisplayVolume(self, volume):
self.volume = volume
self.volumeNumber = StaticText(self.height, self.width, str(volume) + '%', self.font)
self.volumeLabel = StaticText(self.height, self.width, 'Volume', self.font2)
self.volumeBar.SetFilledPercentage(volume)
def DrawOn(self, image):
self.volumeLabel.DrawOn(image, self.labelPos)
self.volumeNumber.DrawOn(image, self.numberPos)
self.volumeBar.DrawOn(image, self.barPos)
class MenuScreen():
def __init__(self, height, width, font2, menuList, selected=0, rows=3, label='', showIndex=False):
self.height = height
self.width = width
self.font2 = font2
self.selectedOption = selected
self.menuLabel = StaticText(self.height, self.width, label, self.font2, center=True)
if label == '':
self.hasLabel = 0
else:
self.hasLabel = 1
self.labelPos = (1, 3)
self.menuYPos = 3 + 16 * self.hasLabel
self.menurows = rows
self.menuText = [None for i in range(self.menurows)]
self.menuList = menuList
self.totaloptions = len(menuList)
self.onscreenoptions = min(self.menurows, self.totaloptions)
self.firstrowindex = 0
self.showIndex = showIndex
self.MenuUpdate()
def MenuUpdate(self):
self.firstrowindex = min(self.firstrowindex, self.selectedOption)
self.firstrowindex = max(self.firstrowindex, self.selectedOption - (self.menurows-1))
for row in range(self.onscreenoptions):
if (self.firstrowindex + row) == self.selectedOption:
color = "black"
bgcolor = "white"
else:
color = "white"
bgcolor = "black"
optionText = self.menuList[row+self.firstrowindex]
if self.showIndex:
width = 1 + len(str(self.totaloptions)) # more digits needs more space
optionText = '{0:{width}d} {1}'.format(row + self.firstrowindex + 1, optionText, width=width)
self.menuText[row] = StaticText(self.height, self.width, optionText, self.font2, fill=color, bgcolor=bgcolor)
if self.totaloptions == 0:
self.menuText[0] = StaticText(self.height, self.width, 'no items..', self.font2, fill="white", bgcolor="black")
def NextOption(self):
self.selectedOption = min(self.selectedOption + 1, self.totaloptions - 1)
self.MenuUpdate()
def PrevOption(self):
self.selectedOption = max(self.selectedOption - 1, 0)
self.MenuUpdate()
def SelectedOption(self):
return self.selectedOption
def UpdatePlayingInfo(self, row1, row2):
pass
def SetPlayingIcon(self, state, time=0):
pass
def DrawOn(self, image):
if self.hasLabel:
self.menuLabel.DrawOn(image, self.labelPos)
for row in range(self.onscreenoptions):
self.menuText[row].DrawOn(image, (5, self.menuYPos + row*16))
if self.totaloptions == 0:
self.menuText[0].DrawOn(image, (15, self.menuYPos))
def LeftKnob_RotaryEvent(dir):
global emit_volume
if not oled.volumeControlDisabled and oled.state != STATE_PLAYLIST_MENU:
if dir == RotaryEncoder.LEFT:
oled.volume -= VOLUME_DT
oled.volume = max(oled.volume, 0)
elif dir == RotaryEncoder.RIGHT:
oled.volume += VOLUME_DT
oled.volume = min(oled.volume, 100)
oled.stateTimeout = 2.0
if oled.state != STATE_VOLUME:
SetState(STATE_VOLUME)
else:
oled.modal.DisplayVolume(oled.volume)
emit_volume = True
def LeftKnob_PushEvent(hold_time):
global UPDATE_INTERVAL
if hold_time < 3:
print ('LeftKnob_PushEvent SHORT')
if oled.state == STATE_PLAYER:
if oled.playState == 'play':
volumioIO.emit('stop')
else:
volumioIO.emit('play')
if oled.state == STATE_PLAYLIST_MENU:
SetState(STATE_PLAYER)
if oled.state == STATE_LIBRARY_MENU:
LibraryReturn()
else:
print ('LeftKnob_PushEvent LONG -> trying to shutdown')
UPDATE_INTERVAL = 10 #stop updating screen
sleep(0.1)
show_logo("shutdown.ppm", oled)
try:
with open('oledconfig.json', 'w') as f: #save current track number
json.dump({"track": oled.playPosition}, f)
except IOError:
print ('Cannot save config file to current working directory')
sleep(1.5)
oled.cleanup() # put display into low power mode
volumioIO.emit('shutdown')
sleep(60)
def RightKnob_RotaryEvent(dir):
global emit_track
if oled.state == STATE_PLAYLIST_MENU or oled.state == STATE_LIBRARY_MENU:
oled.stateTimeout = 20.0
if dir == RotaryEncoder.LEFT:
oled.modal.PrevOption()
elif dir == RotaryEncoder.RIGHT:
oled.modal.NextOption()
else:
oled.stateTimeout = 6.0
if oled.state != STATE_QUEUE_MENU:
SetState(STATE_QUEUE_MENU)
if dir == RotaryEncoder.LEFT:
oled.modal.PrevOption()
elif dir == RotaryEncoder.RIGHT:
oled.modal.NextOption()
oled.playPosition = oled.modal.SelectedOption()
emit_track = True
def RightKnob_PushEvent(hold_time):
if hold_time < 1:
print ('RightKnob_PushEvent SHORT')
if oled.state == STATE_QUEUE_MENU:
oled.stateTimeout = 0 # return to player mode
elif oled.state != STATE_PLAYLIST_MENU and oled.state != STATE_LIBRARY_MENU:
volumioIO.emit('listPlaylist')
oled.stateTimeout = 20.0
SetState(STATE_PLAYLIST_MENU)
print ('Entering playlist menu')
else:
if oled.state == STATE_PLAYLIST_MENU:
LoadPlaylist(oled.playlistoptions[oled.modal.SelectedOption()])
if oled.state == STATE_LIBRARY_MENU:
oled.stateTimeout = 20.0
EnterLibraryItem(oled.modal.SelectedOption())
else:
print ('RightKnob_PushEvent LONG -> Music library browse')
oled.stateTimeout = 20.0
volumioIO.emit('browseLibrary',{'uri':'music-library'})
LeftKnob_Push = PushButton(3, max_time=3)
LeftKnob_Push.setCallback(LeftKnob_PushEvent)
LeftKnob_Rotation = RotaryEncoder(5, 6, pulses_per_cycle=4)
LeftKnob_Rotation.setCallback(LeftKnob_RotaryEvent)
RightKnob_Push = PushButton(27, max_time=1)
RightKnob_Push.setCallback(RightKnob_PushEvent)
RightKnob_Rotation = RotaryEncoder(22, 23, pulses_per_cycle=4)
RightKnob_Rotation.setCallback(RightKnob_RotaryEvent)
#IR receiver is connected to port 13
show_logo("volumio_logo.ppm", oled)
sleep(2)
SetState(STATE_PLAYER)
updateThread = Thread(target=display_update_service)
updateThread.daemon = True
updateThread.start()
def _receive_thread():
volumioIO.wait()
receive_thread = Thread(target=_receive_thread)
receive_thread.daemon = True
receive_thread.start()
volumioIO.on('pushState', onPushState)
volumioIO.on('pushListPlaylist', onPushListPlaylist)
volumioIO.on('pushQueue', onPushQueue)
volumioIO.on('pushBrowseSources', onPushBrowseSources)
volumioIO.on('pushBrowseLibrary', onLibraryBrowse)
# get list of Playlists and initial state
volumioIO.emit('listPlaylist')
volumioIO.emit('getState')
volumioIO.emit('getQueue')
#volumioIO.emit('getBrowseSources')
sleep(0.1)
try:
with open('oledconfig.json', 'r') as f: #load last playing track number
config = json.load(f)
except IOError:
pass
else:
oled.playPosition = config['track']
if oled.playState != 'play':
volumioIO.emit('play', {'value':oled.playPosition})
while True:
if emit_volume:
emit_volume = False
print("volume: " + str(oled.volume))
volumioIO.emit('volume', oled.volume)
if emit_track and oled.stateTimeout < 4.5:
emit_track = False
try:
print('Track selected: ' + str(oled.playPosition+1) + '/' + str(len(oled.queue)) + ' ', oled.queue[oled.playPosition].encode('ascii', 'ignore'))
except IndexError:
pass
volumioIO.emit('play', {'value':oled.playPosition})
sleep(0.1)