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sarix_rtsp.py
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sarix_rtsp.py
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#!/usr/bin/python
import sys
import socket
import traceback
import time
from threading import Thread
import threading
import SocketServer
import struct
import re
import subprocess
import os.path
class RepeatTimer(threading.Thread):
def __init__(self, interval, function, iterations=0, args=[], kwargs={}):
threading.Thread.__init__(self)
self.interval = interval
self.function = function
self.iterations = iterations
self.args = args
self.kwargs = kwargs
self.finished = threading.Event()
def run(self):
count = 0
while not self.finished.is_set() and (self.iterations <= 0 or count <
self.iterations):
self.finished.wait(self.interval)
if not self.finished.is_set():
self.function(*self.args, **self.kwargs)
count += 1
def cancel(self):
self.finished.set()
class FFMPEGHelper:
def __init__(self, video_filename_full):
self.video_filename_full = video_filename_full
self.video_path = os.path.dirname(video_filename_full)
self.video_filename = os.path.basename(video_filename_full)
def process(self, result_filename="media", transcoder_options=None, delete_old_file=False):
self.result_filename = result_filename
cmd = "ffmpeg -i \"%s\"" % self.video_filename_full
# Add any ffmpeg_options passed
if transcoder_options:
for key, value in transcoder_options.items():
if value:
cmd += " %s %s" % (key, value)
else:
cmd += " %s" % (key)
cmd +=" \"%s\"" % self.result_filename
print "CMD: %s" % cmd
p = subprocess.Popen(cmd, cwd=self.video_path, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p.wait()
if p.returncode > 0:
error_message = 'Error creating file: file=%s ffmpeg-stdout=%s ffmpeg command=%s' % (self.result_filename, p.communicate()[0], cmd)
raise Exception(error_message)
if delete_old_file == True:
print "Deleting %s" % self.video_filename
cmd = "rm -f " + self.video_filename
p = subprocess.Popen(cmd, cwd=self.video_path, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p.wait()
if p.returncode > 0:
error_message = 'File deleteion failed for file=%s' % (self.result_filename)
raise Exception(error_message)
class RequestHandler(SocketServer.BaseRequestHandler):
def __init__(self, request, client_address, server):
self.video_file = server.video_file
self.server = server
SocketServer.BaseRequestHandler.__init__(self, request, client_address,server)
def handle(self):
data = (self.request[0])
# Get RTP Header Info...
# Note: Marker flag is payload_type & 128
# actual payload type is payload_type & 127
flags, payload_type, sequence_number, timestamp, ssid = struct.unpack('!BBHII', data[0:12])
if self.server.previous_timestamp != 0 and self.server.previous_timestamp != timestamp:
#print "This is the first packet of a new frame!!"
curr_time = time.time()
#if (curr_time - self.server.time) >= self.server.clip_length:
if (curr_time - self.server.time) >= 10:
#print "Closing file on end of frame"
self.server.time = curr_time
# Close the file and convert to a .ts
self.server.process_file()
# Get a new filename / handle
self.server.get_new_file_handle()
self.video_file = self.server.video_file
self.server.previous_timestamp = timestamp
video_data = data[12:]
nal_header = struct.unpack('!B', video_data[0])[0]
nal_unit_type = (nal_header & 0x1f)
try:
# nal_type_FU_A and nal_type_FU_B
if nal_unit_type == 28 or nal_unit_type == 29:
fu_header = struct.unpack('!B', video_data[1])[0]
S = bool(fu_header & 0x80)
if S:
recalc_nal_header = (nal_header & 0xe0) | (fu_header & 0x1f)
recalc_nal_string = struct.pack('!B', recalc_nal_header)
self.video_file.write('\x00\x00\x00\x01' + recalc_nal_string + video_data[2:])
else:
self.video_file.write(video_data[2:])
elif (nal_unit_type >= 1) and (nal_unit_type <= 23):
self.video_file.write('\x00\x00\x00\x01' + video_data)
else:
print "ERROR: UNHANDLED H264 FRAME TYPE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
except:
traceback.print_exc()
time.sleep(5)
class ThreadedUDPServer(SocketServer.UDPServer):
def __init__(self, server_address, handler_class):
self.time = time.time()
self.file_name = str(self.time).split(".")[0]
self.video_file = open(self.file_name + ".raw", 'wb+')
self.m3u8_file_name = "test.m3u8"
self.file_counter = 0
self.last_seq_num = 0
# Length of each clip in the file
self.clip_length = 3
self.clips_per_m3u = 3
self.frame_event = threading.Event()
self.previous_timestamp = 0
self.cleanup_timer = RepeatTimer(10, self.cleanup_old_files)
self.cleanup_timer.start()
SocketServer.UDPServer.__init__(self, server_address, handler_class)
def cleanup_old_files(self):
print "Calling cleanup!"
files=os.listdir(".")
files.sort()
curr_time = str(time.time())
curr_time = curr_time.split(".")[0]
for file in files:
if ".ts" in file:
file_str = file
file_str = re.sub('.ts', '', file_str)
file_str = re.sub('-.*', '', file_str)
file_num = int(file_str)
print "if %s < %s --- DELETE FILE!" %(file_num, int(curr_time)-60)
if file_num < (int(curr_time) - 60):
print "Going to delete %s" % file
os.remove(file)
#if ".raw" in file:
# file_num = int(file.split(".")[0])
# #print "Found File %s %s" %(file, file_num)
# if file_num < (int(curr_time) - 30):
# print "Going to delete %s" % file
# os.remove(file)
def update_m3u(self, base_file_name, count):
last_seq_num = self.last_seq_num
base_url="http://10.221.221.239:8000/video_streaming/streamingvideo/"
headers="#EXTM3U\n#EXT-X-TARGETDURATION:5\n#EXT-X-MEDIA-SEQUENCE:"+ str(last_seq_num) + "\n"
#EXT-X-VERSION
#EXT-X-ALLOW-CACHE:NO\n"
base_count = int(base_file_name)
for i in range(count):
headers +="#EXTINF:%s,\n" % self.clip_length
headers += base_url + str(base_count) + "_" + str(last_seq_num) + ".ts" + "\n"
base_count += self.clip_length
last_seq_num += 1
#headers += "#EXT-X-ENDLIST\n"
#print headers
file = open(self.m3u8_file_name, 'wb+')
file.seek(0)
file.write(headers)
file.close()
def get_new_file_handle(self):
new_filename = str((int(self.file_name) + self.clip_length))
self.file_name = new_filename
self.video_file = open(self.file_name + ".raw", 'wb+')
self.last_seq_num += 1
def process_file(self):
self.video_file.close()
ffmpeg = FFMPEGHelper("./" + self.file_name + ".raw")
trans_options={}
trans_options['-vcodec'] = "copy"
#trans_options['-vcodec'] = "libx264"
#trans_options['-f'] = "mpegts"
#trans_options['-r'] = "15"
#trans_options['-s'] = "480x272"
#trans_options['-b'] = "400k"
#trans_options['-flags'] = "+loop"
#trans_options['-cmp'] = "+chroma"
#trans_options['-partitions'] = "+parti4x4+partp8x8+partb8x8"
#trans_options['-subq'] = "5"
#trans_options['-trellis'] = "1"
#trans_options['-refs'] = "1"
#trans_options['-coder'] = "0"
#trans_options['-me_range'] = "16"
#trans_options['-keyint_min'] = "25"
#trans_options['-sc_threshold'] = "40"
#trans_options['-i_qfactor'] = "0.71"
#trans_options['-bt'] = "200k"
#trans_options['-maxrate'] = "400k"
#trans_options['-bufsize'] = "400k"
#trans_options['-rc_eq'] = "'blurCplx^(1-qComp)'"
#trans_options['-qcomp'] = "0.6"
#trans_options['-qmin'] = "10"
#trans_options['-qmax'] = "51"
#trans_options['-qdiff'] = "4"
#trans_options['-level'] = "30"
#trans_options['-aspect'] = "480:272"
#trans_options['-g'] = "30"
#trans_options['-async'] = "2"
#ts_filename = self.file_name + "-" + str(self.last_seq_num) + ".ts"
ts_filename = self.file_name + ".ts"
ffmpeg.process(result_filename=ts_filename, transcoder_options=trans_options, delete_old_file=True)
time_str = str(time.time()).split(".")[0]
cmd = "./segmenter %s %s %s %s %s" % (ts_filename, self.clip_length, time_str, self.m3u8_file_name + ".seg", "http://10.221.221.239:8000/video_streaming/streamingvideo/")
print "CMD: %s" % cmd
p = subprocess.Popen(cmd, cwd=".", shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
p.wait()
if p.returncode > 0:
error_message = 'Error creating file: file=%s stdout=%s command=%s' % (ts_filename, p.communicate()[0], cmd)
raise Exception(error_message)
#print "Opening File %s" % self.m3u8_file_name
temp = open(self.m3u8_file_name + ".seg", 'r')
lines = temp.readlines()
m3ufile = open(self.m3u8_file_name, 'wb+')
for line in lines:
#print line
if "EXTM3U" in line:
m3ufile.write(line)
m3ufile.write("#EXT-X-MEDIA-SEQUENCE:1")
if not "ENDLIST" in line:
m3ufile.write(line)
temp.close()
m3ufile.close()
#self.cleanup_old_files()
#if self.file_counter == 0:
# self.update_m3u(self.file_name, self.clips_per_m3u)
# self.file_counter = self.clips_per_m3u
# self.cleanup_old_files()
#self.file_counter -= 1
def finish_request(self, request, client_address):
"""Finish one request by instantiating RequestHandlerClass."""
self.RequestHandlerClass(request, client_address, self)
class RtspClient(Thread):
MAX_KEEP_ALIVE_FAILURE_COUNT = 3
def __init__(self, stream_source_ip, stream_source_port, stream_urn, stream_receive_ip, stream_receive_port):
Thread.__init__(self)
self.stream_source_ip = stream_source_ip
self.stream_source_port = stream_source_port
self.stream_source_path = stream_urn
self.stream_receive_ip = stream_receive_ip
self.stream_receive_port = stream_receive_port
self.accept = ''
self.transport = ''
self.range = ''
self.rtpinfo = ''
self.postdata = ''
self.session = ''
self.seq = 0
self.control = ""
self.track = "/track1"
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.settimeout(10)
self.socket.connect((self.stream_source_ip, self.stream_source_port,))
self.server = ThreadedUDPServer((self.stream_receive_ip, self.stream_receive_port), RequestHandler)
self.server_thread = threading.Thread(target=self.server.serve_forever)
self.server_thread.setDaemon(True)
self.sps = None
self.pps = None
def run(self):
# Keep stream alive. If failure try again or restart stream
rtsp_keep_alive_failure_count = 0
self.server_thread.start()
while True:
try:
# Handle failures and after so many attempt PLAY sequence again
self.keep_alive()
rtsp_keep_alive_failure_count = 0
time.sleep(300)
except:
try:
if rtsp_keep_alive_failure_count >= self.MAX_KEEP_ALIVE_FAILURE_COUNT:
print " * RtspClient - Max number of keep alive failure attempts exceeded. Attempting to restart stream %s%s." % \
(self.stream_source_ip, self.stream_source_path)
try:
try:
# First attempt to tear down, Ignore a failure
self.teardown()
except:
pass
try:
# The teardown may or may not have got to the point of successfully closing the socket
# Try again to be sure
self.socket.close()
except:
pass
# Recreate the socket. Want to make sure that we're starting fresh and
# Will not have any stale data coming in through an old socket
# Also handles the case that an error occured with the previous socket instance
print " * RtspClient - Attempting to reinstanciate socket and request stream for %s%s" % \
(self.stream_source_ip, self.stream_source_path)
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.connect((self.stream_source_ip, self.stream_source_port,))
self.describe()
self.setup()
self.play()
print " * RtspClient - Successfully reinstantiated stream from %s%s." % \
(self.stream_source_ip, self.stream_source_path)
rtsp_keep_alive_failure_count = 0
continue
except:
print " ! RtspClient - Failed to reinitiate streaming from %s%s. Will try again..." % \
(self.stream_source_ip, self.stream_source_path)
time.sleep(5)
rtsp_keep_alive_failure_count += 1
print " ! RtspClient - Failed to send keep alive for stream. Failure # %i" % \
(rtsp_keep_alive_failure_count)
time.sleep(5)
except:
print " ! RtspClient - Unexpceted exception occured"
traceback.print_exc()
def keep_alive(self):
params = []
params.append("GET_PARAMETER rtsp://%s%s RTSP/1.0" % (self.stream_source_ip, self.stream_source_path))
self.seq += 1
params.append("CSeq: %s" % self.seq)
params.append("Session: %s" % self.session)
arr_header, arr_body = self.send_request(params)
def close(self):
self.socket.close()
def option(self):
params = []
self.seq += 1
params.append("CSeq: %s" % self.seq)
params.append("OPTIONS rtsp://%s%s RTSP/1.0" % (self.stream_source_ip, self.stream_source_path))
header, body = self.send_request(params)
def describe(self):
params = []
params.append("DESCRIBE rtsp://%s%s RTSP/1.0" % (self.stream_source_ip, self.stream_source_path))
self.seq += 1
params.append("CSeq: %s" % self.seq)
params.append("Accept: application/sdp")
header, body = self.send_request(params)
for line in body:
if "sprop-parameter-sets" in line.lower():
print "==============================="
self.sps = re.sub('.*sprop-parameter-sets=', '', line).split(",")[0]
self.pps = re.sub('.*sprop-parameter-sets=', '', line).split(",")[1]
if line.lower().find("a=control:") != -1:
# control should contain the track. Save it if found
control = line.split(":")[1]
if control != "*":
self.track = '/' + control
return(self.sps, self.pps)
def setup(self):
self.session = None
params = []
params.append("SETUP rtsp://%s%s%s RTSP/1.0" % (self.stream_source_ip, self.stream_source_path, self.track))
self.seq += 1
params.append("CSeq: %s" % self.seq)
params.append("Transport: RTP/AVP;unicast;destination=%s;client_port=%s-%s" % \
(self.stream_receive_ip, self.stream_receive_port, self.stream_receive_port+1))
header, body = self.send_request(params)
for line in header:
if line.lower().find("session") != -1:
self.session = line.split(": ")[1]
return self.session
def play(self):
params = []
params.append("PLAY rtsp://%s%s/ RTSP/1.0" % (self.stream_source_ip, self.stream_source_path))
self.seq += 1
params.append("CSeq: %s" % self.seq)
# @todo: unsure about this.. figure out if needed
params.append("Range: ntp=0.000-")
params.append("Session: %s" % self.session)
header, body = self.send_request(params)
def teardown(self):
params = []
params.append("TEARDOWN rtsp://%s%s/ RTSP/1.0" % (self.stream_source_ip, self.stream_source_path))
self.seq += 1
params.append("CSeq: %s" % self.seq)
params.append("Session: %s" % self.session)
header, body = self.send_request(params)
self.socket.close()
def send_request(self, params):
request = self.build_request(params)
print "\n\n\n\nREQUEST: %s" % request
bytes_sent = self.socket.send(request)
while bytes_sent < len(request):
bytes_sent = bytes_sent + self.socket.send(request[bytes_sent:])
data = self.socket.recv(1024)
print "REC DATA:\n%s" % repr(data)
header = []
body = []
data = data.split("\r\n\r\n")
header = data[0].split("\r\n")
body = data[1].split("\r\n")
return(header, body,)
def build_request(self, params):
request = '\r\n'.join(params)
request += "\r\n\r\n"
return request
event = threading.Event()
#file_name = "./video.out"
#video_file = open(file_name, 'wb+')
#a=RtspClient("10.221.221.221", 554, "/stream2", "10.221.221.239", 10010)
a=RtspClient("192.168.1.104", 554, "/stream1", "192.168.1.105", 10010)
a.describe()
a.setup()
a.play()
a.start()
while True:
event.wait()