Adding initial PirateRadio script, pifm binary and pirateradio.config file

PirateRadio.py

@@ -0,0 +1,124 @@
+#!/usr/bin/env python
+# Pirate Radio
+# Author: Wynter Woods (Make Magazine)
+
+import os
+import sys
+import subprocess
+import configparser
+import re
+import random
+import threading
+import time
+
+
+fm_process = None
+on_off = ["off", "on"]
+
+frequency = 87.9
+shuffle = False
+repeat_all = False
+merge_audio_in = False
+play_stereo = True
+
+music_pipe_r,music_pipe_w = os.pipe()
+microphone_pipe_r,microphone_pipe_w = os.pipe()
+
+def main():
+	daemonize()
+	setup()
+	files = build_file_list()
+	if repeat_all == True:
+		while(True):
+			play_songs(files)
+	else:
+		play_songs(files)
+	return 0
+
+
+
+def build_file_list():
+	file_list = []
+	for root, folders, files in os.walk("/pirateradio"):
+		folders.sort()
+		files.sort()
+		for filename in files:
+			if re.search(".(aac|mp3|wav|flac|m4a)$", filename) != None:
+				file_list.append(os.path.join(root, filename))
+	return file_list
+
+
+
+def play_songs(file_list):
+	print("Playing songs to frequency ", str(frequency))
+	print("Shuffle is " + on_off[shuffle])
+	print("Repeat All is " + on_off[repeat_all])
+	#print("Stereo playback is " + on_off[play_stereo])
+	
+	if shuffle == True:
+		random.shuffle(file_list)
+	with open(os.devnull, "w") as dev_null:
+		for filename in file_list:
+			print("Playing ",filename)
+			subprocess.call(["ffmpeg","-i",filename,"-f","s16le","-acodec","pcm_s16le","-ac", "2" if play_stereo else "1" ,"-ar","44100","-"],stdout=music_pipe_w, stderr=dev_null)
+
+
+
+def read_config():
+	global frequency
+	global shuffle
+	global repeat_all
+	global play_stereo
+	try:
+		config = configparser.ConfigParser()
+		config.read("/pirateradio/pirateradio.config")
+		
+	except:
+		print("Error reading from config file.")
+	else:
+		play_stereo = config.get("pirateradio", 'stereo_playback', fallback=True)
+		frequency = config.get("pirateradio",'frequency')
+		shuffle = config.getboolean("pirateradio",'shuffle',fallback=False)
+		repeat_all = config.getboolean("pirateradio",'repeat_all', fallback=False)
+
+
+def daemonize():
+	fpid=os.fork()
+	if fpid!=0:
+		sys.exit(0)
+
+
+def setup():
+	#threading.Thread(target = open_microphone).start()
+
+	global frequency
+	read_config()
+	# open_microphone()
+	run_pifm()
+
+
+def run_pifm(use_audio_in=False):
+	global fm_process
+	with open(os.devnull, "w") as dev_null:
+		fm_process = subprocess.Popen(["/root/pifm","-",str(frequency),"44100", "stereo" if play_stereo else "mono"], stdin=music_pipe_r, stdout=dev_null)
+
+		#if use_audio_in == False:
+		#else:
+		#	fm_process = subprocess.Popen(["/root/pifm2","-",str(frequency),"44100"], stdin=microphone_pipe_r, stdout=dev_null)
+
+def record_audio_input():
+	return subprocess.Popen(["arecord", "-fS16_LE", "--buffer-time=50000", "-r", "44100", "-Dplughw:1,0", "-"], stdout=microphone_pipe_w)
+
+def open_microphone():
+	global fm_process
+	audio_process = None
+	if os.path.exists("/proc/asound/card1"):
+		audio_process = record_audio_input()
+		run_pifm(merge_audio_in)
+	else:
+		run_pifm()
+
+
+
+main()
+

README.md

@@ -1,4 +1,4 @@
 PirateRadio
 ===========
 
-Raspberry Pi Automated FM Radio Script
+MAKE Raspberry Pi Automated FM Radio Script.

pirateradio.config

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+[pirateradio]
+frequency = 88.9
+shuffle = True
+repeat_all = True
+stereo_playback = True