def check_state():
"""Check State file
Check the state file to see if play now requested
"""
# refresh state
cm.load_state()
if int(cm.get_state('play_now', "0")):
# play now requested!
return True
return False
def check_state():
"""Check State file
Check the state file to see if play now requested
"""
# refresh state
cm.load_state()
if int(cm.get_state('play_now', "0")):
# play now requested!
return True
return False
def execute_preshow(config):
'''Execute the "Preshow" for the given preshow configuration'''
for transition in config['transitions']:
start = time.time()
if transition['type'].lower() == 'on':
hc.turn_on_lights(True)
else:
hc.turn_off_lights(True)
logging.debug('Transition to ' + transition['type'] + ' for '
+ str(transition['duration']) + ' seconds')
while transition['duration'] > (time.time() - start):
cm.load_state() # Force a refresh of state from file
play_now = int(cm.get_state('play_now', 0))
if play_now:
return # Skip out on the rest of the preshow
# Check once every ~ .1 seconds to break out
time.sleep(0.1)
def execute_preshow(config):
'''Execute the "Preshow" for the given preshow configuration'''
for transition in config['transitions']:
start = time.time()
if transition['type'].lower() == 'on':
hc.turn_on_lights(True)
else:
hc.turn_off_lights(True)
logging.debug('Transition to ' + transition['type'] + ' for ' +
str(transition['duration']) + ' seconds')
while transition['duration'] > (time.time() - start):
cm.load_state() # Force a refresh of state from file
play_now = int(cm.get_state('play_now', 0))
if play_now:
return # Skip out on the rest of the preshow
# Check once every ~ .1 seconds to break out
time.sleep(0.1)
def play_song():
'''Play the next song from the play list (or --file argument).'''
song_to_play = int(cm.get_state('song_to_play', 0))
play_now = int(cm.get_state('play_now', 0))
# Arguments
parser = argparse.ArgumentParser()
filegroup = parser.add_mutually_exclusive_group()
filegroup.add_argument('--playlist', default=_PLAYLIST_PATH,
help='Playlist to choose song from.')
filegroup.add_argument('--file', help='path to the song to play (required if no'
'playlist is designated)')
parser.add_argument('--readcache', type=int, default=1,
help='read light timing from cache if available. Default: true')
args = parser.parse_args()
# Make sure one of --playlist or --file was specified
if args.file == None and args.playlist == None:
print "One of --playlist or --file must be specified"
sys.exit()
# Initialize Lights
hc.initialize()
# Handle the pre-show
if not play_now:
result = Preshow().execute()
if result == Preshow.PlayNowInterrupt:
play_now = True
# Determine the next file to play
song_filename = args.file
if args.playlist != None and args.file == None:
most_votes = [None, None, []]
current_song = None
with open(args.playlist, 'rb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_SH)
playlist = csv.reader(playlist_fp, delimiter='\t')
songs = []
for song in playlist:
if len(song) < 2 or len(song) > 4:
logging.error('Invalid playlist. Each line should be in the form: '
'<song name><tab><path to song>')
sys.exit()
elif len(song) == 2:
song.append(set())
else:
song[2] = set(song[2].split(','))
if len(song) == 3 and len(song[2]) >= len(most_votes[2]):
most_votes = song
songs.append(song)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
if most_votes[0] != None:
logging.info("Most Votes: " + str(most_votes))
current_song = most_votes
# Update playlist with latest votes
with open(args.playlist, 'wb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_EX)
writer = csv.writer(playlist_fp, delimiter='\t')
for song in songs:
if current_song == song and len(song) == 3:
song.append("playing!")
if len(song[2]) > 0:
song[2] = ",".join(song[2])
else:
del song[2]
writer.writerows(songs)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
else:
# Get a "play now" requested song
if play_now > 0 and play_now <= len(songs):
current_song = songs[play_now - 1]
# Get random song
elif _RANDOMIZE_PLAYLIST:
current_song = songs[random.randint(0, len(songs) - 1)]
# Play next song in the lineup
else:
song_to_play = song_to_play if (song_to_play <= len(songs) - 1) else 0
current_song = songs[song_to_play]
next_song = (song_to_play + 1) if ((song_to_play + 1) <= len(songs) - 1) else 0
cm.update_state('song_to_play', next_song)
# Get filename to play and store the current song playing in state cfg
song_filename = current_song[1]
cm.update_state('current_song', songs.index(current_song))
song_filename = song_filename.replace("$SYNCHRONIZED_LIGHTS_HOME", cm.HOME_DIR)
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', 0)
play_now = 0
# Initialize FFT stats
matrix = [0 for _ in range(hc.GPIOLEN)]
# Set up audio
if song_filename.endswith('.wav'):
musicfile = wave.open(song_filename, 'r')
else:
musicfile = decoder.open(song_filename)
sample_rate = musicfile.getframerate()
num_channels = musicfile.getnchannels()
if _usefm=='true':
logging.info("Sending output as fm transmission")
with open(os.devnull, "w") as dev_null:
fm_process = subprocess.Popen(["sudo",cm.HOME_DIR + "/bin/pifm","-",str(frequency),"44100", "stereo" if play_stereo else "mono"], stdin=music_pipe_r, stdout=dev_null)
else:
output = aa.PCM(aa.PCM_PLAYBACK, aa.PCM_NORMAL)
output.setchannels(num_channels)
output.setrate(sample_rate)
output.setformat(aa.PCM_FORMAT_S16_LE)
output.setperiodsize(CHUNK_SIZE)
logging.info("Playing: " + song_filename + " (" + str(musicfile.getnframes() / sample_rate)
+ " sec)")
# Output a bit about what we're about to play to the logs
song_filename = os.path.abspath(song_filename)
cache = []
cache_found = False
cache_filename = os.path.dirname(song_filename) + "/." + os.path.basename(song_filename) \
+ ".sync.gz"
# The values 12 and 1.5 are good estimates for first time playing back (i.e. before we have
# the actual mean and standard deviations calculated for each channel).
mean = [12.0 for _ in range(hc.GPIOLEN)]
std = [1.5 for _ in range(hc.GPIOLEN)]
if args.readcache:
# Read in cached fft
try:
with gzip.open(cache_filename, 'rb') as playlist_fp:
cachefile = csv.reader(playlist_fp, delimiter=',')
for row in cachefile:
cache.append([0.0 if np.isinf(float(item)) else float(item) for item in row])
cache_found = True
# TODO(todd): Optimize this and / or cache it to avoid delay here
cache_matrix = np.array(cache)
for i in range(0, hc.GPIOLEN):
std[i] = np.std([item for item in cache_matrix[:, i] if item > 0])
mean[i] = np.mean([item for item in cache_matrix[:, i] if item > 0])
logging.debug("std: " + str(std) + ", mean: " + str(mean))
except IOError:
logging.warn("Cached sync data song_filename not found: '" + cache_filename
+ ". One will be generated.")
# Process audio song_filename
row = 0
data = musicfile.readframes(CHUNK_SIZE)
frequency_limits = calculate_channel_frequency(_MIN_FREQUENCY,
_MAX_FREQUENCY,
_CUSTOM_CHANNEL_MAPPING,
_CUSTOM_CHANNEL_FREQUENCIES)
while data != '' and not play_now:
if _usefm=='true':
os.write(music_pipe_w, data)
else:
output.write(data)
# Control lights with cached timing values if they exist
matrix = None
if cache_found and args.readcache:
if row < len(cache):
matrix = cache[row]
else:
logging.warning("Ran out of cached FFT values, will update the cache.")
cache_found = False
if matrix == None:
# No cache - Compute FFT in this chunk, and cache results
matrix = fft.calculate_levels(data, CHUNK_SIZE, sample_rate, frequency_limits)
cache.append(matrix)
update_lights(matrix, mean, std)
# Read next chunk of data from music song_filename
data = musicfile.readframes(CHUNK_SIZE)
row = row + 1
# Load new application state in case we've been interrupted
cm.load_state()
play_now = int(cm.get_state('play_now', 0))
if not cache_found:
with gzip.open(cache_filename, 'wb') as playlist_fp:
writer = csv.writer(playlist_fp, delimiter=',')
writer.writerows(cache)
logging.info("Cached sync data written to '." + cache_filename
+ "' [" + str(len(cache)) + " rows]")
# Cleanup the pifm process
if _usefm=='true':
fm_process.kill()
# We're done, turn it all off and clean up things ;)
hc.clean_up()
def main():
'''main'''
song_to_play = int(cm.get_state('song_to_play', 0))
play_now = int(cm.get_state('play_now', 0))
# Arguments
parser = argparse.ArgumentParser()
filegroup = parser.add_mutually_exclusive_group()
filegroup.add_argument('--playlist', default=_PLAYLIST_PATH,
help='Playlist to choose song from.')
filegroup.add_argument('--file', help='path to the song to play (required if no'
'playlist is designated)')
parser.add_argument('--readcache', type=int, default=1,
help='read light timing from cache if available. Default: true')
args = parser.parse_args()
# Log everything to our log file
# TODO(todd): Add logging configuration options.
logging.basicConfig(filename=cm.LOG_DIR + '/music_and_lights.play.dbg',
format='[%(asctime)s] %(levelname)s {%(pathname)s:%(lineno)d}'
' - %(message)s',
level=logging.DEBUG)
# Make sure one of --playlist or --file was specified
if args.file == None and args.playlist == None:
print "One of --playlist or --file must be specified"
sys.exit()
# Initialize Lights
hc.initialize()
# Only execute preshow if no specific song has been requested to be played right now
if not play_now:
execute_preshow(cm.lightshow()['preshow'])
# Determine the next file to play
song_filename = args.file
if args.playlist != None and args.file == None:
most_votes = [None, None, []]
current_song = None
with open(args.playlist, 'rb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_SH)
playlist = csv.reader(playlist_fp, delimiter='\t')
songs = []
for song in playlist:
if len(song) < 2 or len(song) > 4:
logging.error('Invalid playlist. Each line should be in the form: '
'<song name><tab><path to song>')
sys.exit()
elif len(song) == 2:
song.append(set())
else:
song[2] = set(song[2].split(','))
if len(song) == 3 and len(song[2]) >= len(most_votes[2]):
most_votes = song
songs.append(song)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
if most_votes[0] != None:
logging.info("Most Votes: " + str(most_votes))
current_song = most_votes
# Update playlist with latest votes
with open(args.playlist, 'wb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_EX)
writer = csv.writer(playlist_fp, delimiter='\t')
for song in songs:
if current_song == song and len(song) == 3:
song.append("playing!")
if len(song[2]) > 0:
song[2] = ",".join(song[2])
else:
del song[2]
writer.writerows(songs)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
else:
# Get random song
if _RANDOMIZE_PLAYLIST:
current_song = songs[random.randint(0, len(songs) - 1)]
# Get a "play now" requested song
elif play_now > 0 and play_now <= len(songs):
current_song = songs[play_now - 1]
# Play next song in the lineup
else:
song_to_play = song_to_play if (song_to_play <= len(songs) - 1) else 0
current_song = songs[song_to_play]
next_song = (song_to_play + 1) if ((song_to_play + 1) <= len(songs) - 1) else 0
cm.update_state('song_to_play', next_song)
# Get filename to play and store the current song playing in state cfg
song_filename = current_song[1]
cm.update_state('current_song', songs.index(current_song))
song_filename = song_filename.replace("$SYNCHRONIZED_LIGHTS_HOME", cm.HOME_DIR)
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', 0)
play_now = 0
# Initialize FFT stats
matrix = [0 for _ in range(hc.GPIOLEN)]
offct = [0 for _ in range(hc.GPIOLEN)]
# Build the limit list
if len(_LIMIT_LIST) == 1:
limit = [_LIMIT_LIST[0] for _ in range(hc.GPIOLEN)]
else:
limit = _LIMIT_LIST
# Set up audio
if song_filename.endswith('.wav'):
musicfile = wave.open(song_filename, 'r')
else:
musicfile = decoder.open(song_filename)
sample_rate = musicfile.getframerate()
num_channels = musicfile.getnchannels()
output = aa.PCM(aa.PCM_PLAYBACK, aa.PCM_NORMAL)
output.setchannels(num_channels)
output.setrate(sample_rate)
output.setformat(aa.PCM_FORMAT_S16_LE)
output.setperiodsize(CHUNK_SIZE)
# Output a bit about what we're about to play
song_filename = os.path.abspath(song_filename)
logging.info("Playing: " + song_filename + " (" + str(musicfile.getnframes() / sample_rate)
+ " sec)")
cache = []
cache_found = False
cache_filename = os.path.dirname(song_filename) + "/." + os.path.basename(song_filename) \
+ ".sync.gz"
# The values 12 and 1.5 are good estimates for first time playing back (i.e. before we have
# the actual mean and standard deviations calculated for each channel).
mean = [12.0 for _ in range(hc.GPIOLEN)]
std = [1.5 for _ in range(hc.GPIOLEN)]
if args.readcache:
# Read in cached fft
try:
with gzip.open(cache_filename, 'rb') as playlist_fp:
cachefile = csv.reader(playlist_fp, delimiter=',')
for row in cachefile:
cache.append([0.0 if np.isinf(float(item)) else float(item) for item in row])
cache_found = True
# TODO(todd): Optimize this and / or cache it to avoid delay here
cache_matrix = np.array(cache)
for i in range(0, hc.GPIOLEN):
std[i] = np.std([item for item in cache_matrix[:, i] if item > 0])
mean[i] = np.mean([item for item in cache_matrix[:, i] if item > 0])
logging.debug("std: " + str(std) + ", mean: " + str(mean))
except IOError:
logging.warn("Cached sync data song_filename not found: '" + cache_filename
+ ". One will be generated.")
# Process audio song_filename
row = 0
data = musicfile.readframes(CHUNK_SIZE)
frequency_limits = calculate_channel_frequency(_MIN_FREQUENCY,
_MAX_FREQUENCY,
_CUSTOM_CHANNEL_MAPPING,
_CUSTOM_CHANNEL_FREQUENCIES)
while data != '' and not play_now:
output.write(data)
# Control lights with cached timing values if they exist
matrix = None
if cache_found and args.readcache:
if row < len(cache):
matrix = cache[row]
else:
logging.warning("Ran out of cached FFT values, will update the cache.")
cache_found = False
if matrix == None:
# No cache - Compute FFT in this chunk, and cache results
matrix = calculate_levels(data, sample_rate, frequency_limits)
cache.append(matrix)
# blank out the display
led.fill(Color(0,0,0),0,151)
for i in range(0, hc.GPIOLEN):
if hc.is_pin_pwm(i):
# Output pwm, where off is at 0.5 std below the mean
# and full on is at 0.75 std above the mean.
display_column(i,matrix[i])
#brightness = matrix[i] - mean[i] + 0.5 * std[i]
#brightness = brightness / (1.25 * std[i])
#if brightness > 1.0:
#brightness = 1.0
#if brightness < 0:
#brightness = 0
#hc.turn_on_light(i, True, int(brightness * 60))
else:
if limit[i] < matrix[i] * _LIMIT_THRESHOLD:
limit[i] = limit[i] * _LIMIT_THRESHOLD_INCREASE
logging.debug("++++ channel: {0}; limit: {1:.3f}".format(i, limit[i]))
# Amplitude has reached threshold
if matrix[i] > limit[i]:
hc.turn_on_light(i, True)
offct[i] = 0
else: # Amplitude did not reach threshold
offct[i] = offct[i] + 1
if offct[i] > _MAX_OFF_CYCLES:
offct[i] = 0
limit[i] = limit[i] * _LIMIT_THRESHOLD_DECREASE # old value 0.8
logging.debug("---- channel: {0}; limit: {1:.3f}".format(i, limit[i]))
hc.turn_off_light(i, True)
# send out data to RGB LED Strip
led.update()
# Read next chunk of data from music song_filename
data = musicfile.readframes(CHUNK_SIZE)
row = row + 1
# Load new application state in case we've been interrupted
cm.load_state()
play_now = int(cm.get_state('play_now', 0))
if not cache_found:
with gzip.open(cache_filename, 'wb') as playlist_fp:
writer = csv.writer(playlist_fp, delimiter=',')
writer.writerows(cache)
logging.info("Cached sync data written to '." + cache_filename
+ "' [" + str(len(cache)) + " rows]")
# We're done, turn it all off ;)
hc.clean_up()
def main():
'''main'''
song_to_play = int(cm.get_state('song_to_play', 0))
play_now = int(cm.get_state('play_now', 0))
# Arguments
parser = argparse.ArgumentParser()
filegroup = parser.add_mutually_exclusive_group()
filegroup.add_argument('--playlist',
default=_PLAYLIST_PATH,
help='Playlist to choose song from.')
filegroup.add_argument('--file',
help='path to the song to play (required if no'
'playlist is designated)')
parser.add_argument(
'--readcache',
type=int,
default=1,
help='read light timing from cache if available. Default: true')
args = parser.parse_args()
# Log everything to our log file
# TODO(todd): Add logging configuration options.
logging.basicConfig(
filename=cm.LOG_DIR + '/music_and_lights.play.dbg',
format='[%(asctime)s] %(levelname)s {%(pathname)s:%(lineno)d}'
' - %(message)s',
level=logging.DEBUG)
# Make sure one of --playlist or --file was specified
if args.file == None and args.playlist == None:
print "One of --playlist or --file must be specified"
sys.exit()
# Initialize Lights
hc.initialize()
# Only execute preshow if no specific song has been requested to be played right now
if not play_now:
execute_preshow(cm.lightshow()['preshow'])
# Determine the next file to play
song_filename = args.file
if args.playlist != None and args.file == None:
most_votes = [None, None, []]
current_song = None
with open(args.playlist, 'rb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_SH)
playlist = csv.reader(playlist_fp, delimiter='\t')
songs = []
for song in playlist:
if len(song) < 2 or len(song) > 4:
logging.error(
'Invalid playlist. Each line should be in the form: '
'<song name><tab><path to song>')
sys.exit()
elif len(song) == 2:
song.append(set())
else:
song[2] = set(song[2].split(','))
if len(song) == 3 and len(song[2]) >= len(most_votes[2]):
most_votes = song
songs.append(song)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
if most_votes[0] != None:
logging.info("Most Votes: " + str(most_votes))
current_song = most_votes
# Update playlist with latest votes
with open(args.playlist, 'wb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_EX)
writer = csv.writer(playlist_fp, delimiter='\t')
for song in songs:
if current_song == song and len(song) == 3:
song.append("playing!")
if len(song[2]) > 0:
song[2] = ",".join(song[2])
else:
del song[2]
writer.writerows(songs)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
else:
# Get random song
if _RANDOMIZE_PLAYLIST:
current_song = songs[random.randint(0, len(songs) - 1)]
# Get a "play now" requested song
elif play_now > 0 and play_now <= len(songs):
current_song = songs[play_now - 1]
# Play next song in the lineup
else:
song_to_play = song_to_play if (
song_to_play <= len(songs) - 1) else 0
current_song = songs[song_to_play]
next_song = (song_to_play + 1) if (
(song_to_play + 1) <= len(songs) - 1) else 0
cm.update_state('song_to_play', next_song)
# Get filename to play and store the current song playing in state cfg
song_filename = current_song[1]
cm.update_state('current_song', songs.index(current_song))
song_filename = song_filename.replace("$SYNCHRONIZED_LIGHTS_HOME",
cm.HOME_DIR)
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', 0)
play_now = 0
# Initialize FFT stats
matrix = [0 for _ in range(hc.GPIOLEN)]
offct = [0 for _ in range(hc.GPIOLEN)]
# Build the limit list
if len(_LIMIT_LIST) == 1:
limit = [_LIMIT_LIST[0] for _ in range(hc.GPIOLEN)]
else:
limit = _LIMIT_LIST
# Set up audio
if song_filename.endswith('.wav'):
musicfile = wave.open(song_filename, 'r')
else:
musicfile = decoder.open(song_filename)
sample_rate = musicfile.getframerate()
num_channels = musicfile.getnchannels()
output = aa.PCM(aa.PCM_PLAYBACK, aa.PCM_NORMAL)
output.setchannels(num_channels)
output.setrate(sample_rate)
output.setformat(aa.PCM_FORMAT_S16_LE)
output.setperiodsize(CHUNK_SIZE)
# Output a bit about what we're about to play
song_filename = os.path.abspath(song_filename)
logging.info("Playing: " + song_filename + " (" +
str(musicfile.getnframes() / sample_rate) + " sec)")
cache = []
cache_found = False
cache_filename = os.path.dirname(song_filename) + "/." + os.path.basename(song_filename) \
+ ".sync.gz"
# The values 12 and 1.5 are good estimates for first time playing back (i.e. before we have
# the actual mean and standard deviations calculated for each channel).
mean = [12.0 for _ in range(hc.GPIOLEN)]
std = [1.5 for _ in range(hc.GPIOLEN)]
if args.readcache:
# Read in cached fft
try:
with gzip.open(cache_filename, 'rb') as playlist_fp:
cachefile = csv.reader(playlist_fp, delimiter=',')
for row in cachefile:
cache.append([
0.0 if np.isinf(float(item)) else float(item)
for item in row
])
cache_found = True
# TODO(todd): Optimize this and / or cache it to avoid delay here
cache_matrix = np.array(cache)
for i in range(0, hc.GPIOLEN):
std[i] = np.std(
[item for item in cache_matrix[:, i] if item > 0])
mean[i] = np.mean(
[item for item in cache_matrix[:, i] if item > 0])
logging.debug("std: " + str(std) + ", mean: " + str(mean))
except IOError:
logging.warn("Cached sync data song_filename not found: '" +
cache_filename + ". One will be generated.")
# Process audio song_filename
row = 0
data = musicfile.readframes(CHUNK_SIZE)
frequency_limits = calculate_channel_frequency(
_MIN_FREQUENCY, _MAX_FREQUENCY, _CUSTOM_CHANNEL_MAPPING,
_CUSTOM_CHANNEL_FREQUENCIES)
while data != '' and not play_now:
output.write(data)
# Control lights with cached timing values if they exist
matrix = None
if cache_found and args.readcache:
if row < len(cache):
matrix = cache[row]
else:
logging.warning(
"Ran out of cached FFT values, will update the cache.")
cache_found = False
if matrix == None:
# No cache - Compute FFT in this chunk, and cache results
matrix = calculate_levels(data, sample_rate, frequency_limits)
cache.append(matrix)
# blank out the display
led.fill(Color(0, 0, 0), 0, 151)
for i in range(0, hc.GPIOLEN):
if hc.is_pin_pwm(i):
# Output pwm, where off is at 0.5 std below the mean
# and full on is at 0.75 std above the mean.
display_column(i, matrix[i])
#brightness = matrix[i] - mean[i] + 0.5 * std[i]
#brightness = brightness / (1.25 * std[i])
#if brightness > 1.0:
#brightness = 1.0
#if brightness < 0:
#brightness = 0
#hc.turn_on_light(i, True, int(brightness * 60))
else:
if limit[i] < matrix[i] * _LIMIT_THRESHOLD:
limit[i] = limit[i] * _LIMIT_THRESHOLD_INCREASE
logging.debug("++++ channel: {0}; limit: {1:.3f}".format(
i, limit[i]))
# Amplitude has reached threshold
if matrix[i] > limit[i]:
hc.turn_on_light(i, True)
offct[i] = 0
else: # Amplitude did not reach threshold
offct[i] = offct[i] + 1
if offct[i] > _MAX_OFF_CYCLES:
offct[i] = 0
limit[i] = limit[
i] * _LIMIT_THRESHOLD_DECREASE # old value 0.8
logging.debug("---- channel: {0}; limit: {1:.3f}".format(
i, limit[i]))
hc.turn_off_light(i, True)
# send out data to RGB LED Strip
led.update()
# Read next chunk of data from music song_filename
data = musicfile.readframes(CHUNK_SIZE)
row = row + 1
# Load new application state in case we've been interrupted
cm.load_state()
play_now = int(cm.get_state('play_now', 0))
if not cache_found:
with gzip.open(cache_filename, 'wb') as playlist_fp:
writer = csv.writer(playlist_fp, delimiter=',')
writer.writerows(cache)
logging.info("Cached sync data written to '." + cache_filename +
"' [" + str(len(cache)) + " rows]")
# We're done, turn it all off ;)
hc.clean_up()
def play_song(num_songs):
"""Play the next song from the play list (or --file argument)."""
play_now = int(cm.get_state('play_now', "0"))
# Make sure one of --playlist or --file was specified
if args.file is None and args.playlist is None:
print "One of --playlist or --file must be specified"
sys.exit()
current_playlist = playlist.Playlist(args.playlist, num_songs)
# Initialize Lights
hc.initialize()
# Fork and warm the cache. Technically race prone but meh
pool = multiprocessing.pool.Pool(processes=1)
for (song_title,
song_filename,
chunk_size) in current_playlist.get_song():
cache_proc = pool.apply_async(cache_song, [song_filename, chunk_size])
# Handle the pre/post show
if not play_now:
result = prepostshow.PrePostShow('preshow', hc).execute()
if result == prepostshow.PrePostShow.play_now_interrupt:
play_now = int(cm.get_state('play_now', "0"))
# TODO(mdietz): What the hell is this play_now variable really for?
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', "0")
play_now = 0
# Wait for the cache
cache_proc.wait()
mean, std, cache_matrix = cache_proc.get()
# NOTE(mdietz): Adapt this to a standard radio, not an SDR. The SDR
# has a clear extra amount of delay
light_show_delay = _CONFIG.getfloat("lightshow", "light_delay")
logging.info("Delaying light show by %f seconds" % light_show_delay)
audio_in_stream = audio_input.get_audio_input_handler(song_filename,
chunk_size)
audio_out_stream = audio_output.get_audio_output_handler(
audio_in_stream.num_channels, audio_in_stream.sample_rate,
song_title, chunk_size)
try:
# Process audio
row = 0
start_time = time.time()
while True:
data = audio_in_stream.next_chunk()
if not data or play_now:
break
audio_out_stream.write(data)
# TODO(mdietz): This actually pretty much works, but it would
# be nice to figure out what the actual delay
# time is, and also make it a config value
# TODO(mdietz): I may be able to time the popen to first stdout
# from the fm proc for a dynamic delay
if time.time() - start_time < light_show_delay:
continue
matrix = cache_matrix[row]
update_lights(matrix, mean, std)
# Read next chunk of data from music
# Load new application state in case we've been interrupted
# TODO(mdietz): not the way to do this. Read from a db,
# accept a signal or some other OOB proc
cm.load_state()
play_now = int(cm.get_state('play_now', "0"))
row += 1
# Cleanup the fm process if there is one
except Exception:
logging.exception("Error in playback")
finally:
audio_out_stream.cleanup()
# check for postshow
prepostshow.PrePostShow('postshow', hc).execute()
def play_song():
"""Play the next song from the play list (or --file argument)."""
song_to_play = int(cm.get_state('song_to_play', 0))
play_now = int(cm.get_state('play_now', 0))
# Arguments
parser = argparse.ArgumentParser()
filegroup = parser.add_mutually_exclusive_group()
filegroup.add_argument('--playlist',
default=_PLAYLIST_PATH,
help='Playlist to choose song from.')
filegroup.add_argument('--file',
help='path to the song to play (required if no'
'playlist is designated)')
parser.add_argument(
'--readcache',
type=int,
default=1,
help='read light timing from cache if available. Default: true')
args = parser.parse_args()
# Make sure one of --playlist or --file was specified
if args.file == None and args.playlist == None:
print "One of --playlist or --file must be specified"
sys.exit()
# Handle the pre/post show
if not play_now:
result = PrePostShow('preshow').execute()
# now unused. if play_now = True
# song to play is always the first song in the playlist
if result == PrePostShow.play_now_interrupt:
play_now = int(cm.get_state('play_now', 0))
# Initialize Lights
hc.initialize()
# Determine the next file to play
song_filename = args.file
if args.playlist != None and args.file == None:
most_votes = [None, None, []]
current_song = None
with open(args.playlist, 'rb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_SH)
playlist = csv.reader(playlist_fp, delimiter='\t')
songs = []
for song in playlist:
if len(song) < 2 or len(song) > 4:
logging.error(
'Invalid playlist. Each line should be in the form: '
'<song name><tab><path to song>')
sys.exit()
elif len(song) == 2:
song.append(set())
else:
song[2] = set(song[2].split(','))
if len(song) == 3 and len(song[2]) >= len(most_votes[2]):
most_votes = song
songs.append(song)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
if most_votes[0] != None:
logging.info("Most Votes: " + str(most_votes))
current_song = most_votes
# Update playlist with latest votes
with open(args.playlist, 'wb') as playlist_fp:
fcntl.lockf(playlist_fp, fcntl.LOCK_EX)
writer = csv.writer(playlist_fp, delimiter='\t')
for song in songs:
if current_song == song and len(song) == 3:
song.append("playing!")
if len(song[2]) > 0:
song[2] = ",".join(song[2])
else:
del song[2]
writer.writerows(songs)
fcntl.lockf(playlist_fp, fcntl.LOCK_UN)
else:
# Get a "play now" requested song
if play_now > 0 and play_now <= len(songs):
current_song = songs[play_now - 1]
# Get random song
elif _RANDOMIZE_PLAYLIST:
# Use python's random.randrange() to get a random song
current_song = songs[random.randrange(0, len(songs))]
# Play next song in the lineup
else:
song_to_play = song_to_play if (
song_to_play <= len(songs) - 1) else 0
current_song = songs[song_to_play]
next_song = (song_to_play + 1) if (
(song_to_play + 1) <= len(songs) - 1) else 0
cm.update_state('song_to_play', next_song)
# Get filename to play and store the current song playing in state cfg
song_filename = current_song[1]
cm.update_state('current_song', songs.index(current_song))
song_filename = song_filename.replace("$SYNCHRONIZED_LIGHTS_HOME",
cm.HOME_DIR)
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', 0)
play_now = 0
# Initialize FFT stats
matrix = [0 for _ in range(hc.GPIOLEN)]
# Set up audio
if song_filename.endswith('.wav'):
musicfile = wave.open(song_filename, 'r')
else:
musicfile = decoder.open(song_filename)
sample_rate = musicfile.getframerate()
num_channels = musicfile.getnchannels()
if _usefm == 'true':
logging.info("Sending output as fm transmission")
with open(os.devnull, "w") as dev_null:
# play_stereo is always True as coded, Should it be changed to
# an option in the config file?
fm_process = subprocess.Popen(["sudo",
cm.HOME_DIR + "/bin/pifm",
"-",
str(frequency),
"44100",
"stereo" if play_stereo else "mono"],\
stdin=music_pipe_r,\
stdout=dev_null)
else:
output = aa.PCM(aa.PCM_PLAYBACK, aa.PCM_NORMAL)
output.setchannels(num_channels)
output.setrate(sample_rate)
output.setformat(aa.PCM_FORMAT_S16_LE)
output.setperiodsize(CHUNK_SIZE)
logging.info("Playing: " + song_filename + " (" +
str(musicfile.getnframes() / sample_rate) + " sec)")
# Output a bit about what we're about to play to the logs
song_filename = os.path.abspath(song_filename)
# create empty array for the cache_matrix
cache_matrix = np.empty(shape=[0, hc.GPIOLEN])
cache_found = False
cache_filename = \
os.path.dirname(song_filename) + "/." + os.path.basename(song_filename) + ".sync"
# The values 12 and 1.5 are good estimates for first time playing back
# (i.e. before we have the actual mean and standard deviations
# calculated for each channel).
mean = [12.0 for _ in range(hc.GPIOLEN)]
std = [1.5 for _ in range(hc.GPIOLEN)]
if args.readcache:
# Read in cached fft
try:
# load cache from file using numpy loadtxt
cache_matrix = np.loadtxt(cache_filename)
cache_found = True
# get std from matrix / located at index 0
std = np.array(cache_matrix[0])
# get mean from matrix / located at index 1
mean = np.array(cache_matrix[1])
# delete mean and std from the array
cache_matrix = np.delete(cache_matrix, (0), axis=0)
cache_matrix = np.delete(cache_matrix, (0), axis=0)
logging.debug("std: " + str(std) + ", mean: " + str(mean))
except IOError:
logging.warn("Cached sync data song_filename not found: '" +
cache_filename + ". One will be generated.")
# Process audio song_filename
row = 0
data = musicfile.readframes(CHUNK_SIZE)
frequency_limits = calculate_channel_frequency(
_MIN_FREQUENCY, _MAX_FREQUENCY, _CUSTOM_CHANNEL_MAPPING,
_CUSTOM_CHANNEL_FREQUENCIES)
while data != '' and not play_now:
if _usefm == 'true':
os.write(music_pipe_w, data)
else:
output.write(data)
# Control lights with cached timing values if they exist
matrix = None
if cache_found and args.readcache:
if row < len(cache_matrix):
matrix = cache_matrix[row]
else:
logging.warning(
"Ran out of cached FFT values, will update the cache.")
cache_found = False
if matrix == None:
# No cache - Compute FFT in this chunk, and cache results
matrix = fft.calculate_levels(data, CHUNK_SIZE, sample_rate,
frequency_limits, hc.GPIOLEN)
# Add the matrix to the end of the cache
cache_matrix = np.vstack([cache_matrix, matrix])
update_lights(matrix, mean, std)
# Read next chunk of data from music song_filename
data = musicfile.readframes(CHUNK_SIZE)
row = row + 1
# Load new application state in case we've been interrupted
cm.load_state()
play_now = int(cm.get_state('play_now', 0))
if not cache_found:
# Compute the standard deviation and mean values for the cache
for i in range(0, hc.GPIOLEN):
std[i] = np.std([item for item in cache_matrix[:, i] if item > 0])
mean[i] = np.mean(
[item for item in cache_matrix[:, i] if item > 0])
# Add mean and std to the top of the cache
cache_matrix = np.vstack([mean, cache_matrix])
cache_matrix = np.vstack([std, cache_matrix])
# Save the cache using numpy savetxt
np.savetxt(cache_filename, cache_matrix)
logging.info("Cached sync data written to '." + cache_filename +
"' [" + str(len(cache_matrix)) + " rows]")
# Cleanup the pifm process
if _usefm == 'true':
fm_process.kill()
# check for postshow
done = PrePostShow('postshow').execute()
# We're done, turn it all off and clean up things ;)
hc.clean_up()
def play_song(num_songs):
"""Play the next song from the play list (or --file argument)."""
play_now = int(cm.get_state('play_now', "0"))
# Make sure one of --playlist or --file was specified
if args.file is None and args.playlist is None:
print "One of --playlist or --file must be specified"
sys.exit()
current_playlist = playlist.Playlist(args.playlist, num_songs)
# Initialize Lights
hc.initialize()
# Fork and warm the cache. Technically race prone but meh
pool = multiprocessing.pool.Pool(processes=1)
for (song_title, song_filename, chunk_size) in current_playlist.get_song():
cache_proc = pool.apply_async(cache_song, [song_filename, chunk_size])
# Handle the pre/post show
if not play_now:
result = prepostshow.PrePostShow('preshow', hc).execute()
if result == prepostshow.PrePostShow.play_now_interrupt:
play_now = int(cm.get_state('play_now', "0"))
# TODO(mdietz): What the hell is this play_now variable really for?
# Ensure play_now is reset before beginning playback
if play_now:
cm.update_state('play_now', "0")
play_now = 0
# Wait for the cache
cache_proc.wait()
mean, std, cache_matrix = cache_proc.get()
# NOTE(mdietz): Adapt this to a standard radio, not an SDR. The SDR
# has a clear extra amount of delay
light_show_delay = _CONFIG.getfloat("lightshow", "light_delay")
logging.info("Delaying light show by %f seconds" % light_show_delay)
audio_in_stream = audio_input.get_audio_input_handler(
song_filename, chunk_size)
audio_out_stream = audio_output.get_audio_output_handler(
audio_in_stream.num_channels, audio_in_stream.sample_rate,
song_title, chunk_size)
try:
# Process audio
row = 0
start_time = time.time()
while True:
data = audio_in_stream.next_chunk()
if not data or play_now:
break
audio_out_stream.write(data)
# TODO(mdietz): This actually pretty much works, but it would
# be nice to figure out what the actual delay
# time is, and also make it a config value
# TODO(mdietz): I may be able to time the popen to first stdout
# from the fm proc for a dynamic delay
if time.time() - start_time < light_show_delay:
continue
matrix = cache_matrix[row]
update_lights(matrix, mean, std)
# Read next chunk of data from music
# Load new application state in case we've been interrupted
# TODO(mdietz): not the way to do this. Read from a db,
# accept a signal or some other OOB proc
cm.load_state()
play_now = int(cm.get_state('play_now', "0"))
row += 1
# Cleanup the fm process if there is one
except Exception:
logging.exception("Error in playback")
finally:
audio_out_stream.cleanup()
# check for postshow
prepostshow.PrePostShow('postshow', hc).execute()
