mirror of
https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
Add rtsp support
This commit is contained in:
parent
a0bb1726e3
commit
1e4ab8eed0
81
scripts/examples/36-Web-Servers/rtsp_video_server.py
Normal file
81
scripts/examples/36-Web-Servers/rtsp_video_server.py
Normal file
@ -0,0 +1,81 @@
|
||||
# RTSP Video Server
|
||||
#
|
||||
# This example shows off how to stream video over RTSP with your OpenMV Cam.
|
||||
#
|
||||
# You can use a program like VLC to view the video stream by connecting to the
|
||||
# OpenMV Cam's IP address.
|
||||
|
||||
import network, omv, rtsp, sensor, time
|
||||
|
||||
# RTP MJPEG streaming works using JPEG images produced by the OV2640/OV5640 camera modules.
|
||||
# Not all programs (e.g. VLC) implement the full JPEG standard for decoding any JPEG image
|
||||
# in RTP packets. Images JPEG compressed by the OpenMV Cam internally may not display.
|
||||
|
||||
sensor.reset()
|
||||
|
||||
sensor.set_pixformat(sensor.JPEG) # Only supported by the OV2640/OV5640.
|
||||
sensor.set_framesize(sensor.UXGA)
|
||||
|
||||
# Turn off the frame buffer connection to the IDE from the OpenMV Cam side.
|
||||
#
|
||||
# This needs to be done when manually compressing jpeg images at higher quality
|
||||
# so that the OpenMV Cam does not try to stream them to the IDE using a fall back
|
||||
# mechanism if the JPEG image is too large to fit in the IDE JPEG frame buffer on the OpenMV Cam.
|
||||
|
||||
omv.disable_fb(True)
|
||||
|
||||
# * ssid - WiFi network to connect to.
|
||||
# * ssid_key - WiFi network password.
|
||||
# * ssid_security - WiFi security.
|
||||
# * port - Port to listen to (554).
|
||||
# * mode - Regular or access-point mode.
|
||||
# * static_ip - If not None then a tuple of the (IP Address, Subnet Mask, Gateway, DNS Address)
|
||||
|
||||
server = rtsp.rtsp_server(ssid="",
|
||||
ssid_key="",
|
||||
ssid_security=network.WINC.WPA_PSK,
|
||||
port=554,
|
||||
mode=network.WINC.MODE_STA,
|
||||
static_ip=None)
|
||||
|
||||
# For the call back functions below:
|
||||
#
|
||||
# `pathname` is the name of the stream resource the client wants. You can ignore this if it's not
|
||||
# needed. Otherwise, you can use it to determine what image object to return. By default the path
|
||||
# name will be "/".
|
||||
#
|
||||
# `session` is random number that will change when a new connection is established. You can use
|
||||
# session with a dictionary to differentiate different accesses to the same file name.
|
||||
|
||||
def setup_callback(pathname, session):
|
||||
print("Opening \"%s\" in session %d" % (pathname, session))
|
||||
|
||||
def play_callback(pathname, session):
|
||||
print("Playing \"%s\" in session %d" % (pathname, session))
|
||||
|
||||
def pause_callback(pathname, session): # VLC only pauses locally. This is never called.
|
||||
print("Pausing \"%s\" in session %d" % (pathname, session))
|
||||
|
||||
def teardown_callback(pathname, session):
|
||||
print("Closing \"%s\" in session %d" % (pathname, session))
|
||||
|
||||
server.register_setup_cb(setup_callback)
|
||||
server.register_play_cb(play_callback)
|
||||
server.register_pause_cb(pause_callback)
|
||||
server.register_teardown_cb(teardown_callback)
|
||||
|
||||
# Track the current FPS.
|
||||
clock = time.clock()
|
||||
|
||||
# Called each time a new frame is needed.
|
||||
def image_callback(pathname, session):
|
||||
clock.tick()
|
||||
img = sensor.snapshot()
|
||||
# Markup image and/or do various things.
|
||||
print(clock.fps())
|
||||
return img
|
||||
|
||||
# Stream does not return. It will call `image_callback` when it needs to get an image object to send
|
||||
# to the remote rtsp client connecting to the server.
|
||||
|
||||
server.stream(image_callback)
|
||||
219
scripts/libraries/rtsp.py
Normal file
219
scripts/libraries/rtsp.py
Normal file
@ -0,0 +1,219 @@
|
||||
# This file is part of the OpenMV project.
|
||||
#
|
||||
# Copyright (c) 2013-2020 Ibrahim Abdelkader <iabdalkader@openmv.io>
|
||||
# Copyright (c) 2013-2020 Kwabena W. Agyeman <kwagyeman@openmv.io>
|
||||
#
|
||||
# This work is licensed under the MIT license, see the file LICENSE for details.
|
||||
|
||||
import network, pyb, re, socket, struct
|
||||
|
||||
class rtsp_server:
|
||||
|
||||
def __valid_tcp_socket(self): # private
|
||||
if self.__tcp__socket is None:
|
||||
try:
|
||||
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||||
s.bind(self.__myaddr)
|
||||
s.listen(0)
|
||||
s.settimeout(5)
|
||||
self.__tcp__socket, self.__client_addr = s.accept()
|
||||
s.close()
|
||||
except OSError: self.__tcp__socket = None
|
||||
return self.__tcp__socket is not None
|
||||
|
||||
def __close_tcp_socket(self): # private
|
||||
self.__tcp__socket.close()
|
||||
self.__tcp__socket = None
|
||||
|
||||
def __valid_udp_socket(self): # private
|
||||
if self.__udp__socket is None:
|
||||
try:
|
||||
self.__udp__socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
||||
self.__udp__socket.bind((self.__myip, self.__client_rtp_port))
|
||||
except OSError: self.__udp__socket = None
|
||||
return self.__udp__socket is not None
|
||||
|
||||
def __close_udp_socket(self): # private
|
||||
self.__udp__socket.close()
|
||||
self.__udp__socket = None
|
||||
|
||||
def __init__(self, ssid, ssid_key, ssid_security, port=554, mode=network.WINC.MODE_STA, static_ip=None): # private
|
||||
self.__winc = network.WINC(mode=mode)
|
||||
if mode == network.WINC.MODE_STA:
|
||||
if static_ip is not None: self.__winc.ifconfig(static_ip)
|
||||
self.__winc.connect(ssid, key=ssid_key, security=ssid_security)
|
||||
if not self.__winc.isconnected(): raise OSError("Failed to connect to network!")
|
||||
elif mode == network.WINC.MODE_AP: self.__winc.start_ap(ssid, key=ssid_key, security=ssid_security)
|
||||
else: raise ValueError("Invalid mode")
|
||||
self.__myip = self.__winc.ifconfig()[0]
|
||||
self.__myaddr = (self.__myip, port)
|
||||
self.__tcp__socket = None
|
||||
self.__udp__socket = None
|
||||
self.__setup_cb = None
|
||||
self.__play_cb = None
|
||||
self.__pause_cb = None
|
||||
self.__teardown_cb = None
|
||||
self.__pathname = ""
|
||||
self.__session = pyb.rng()
|
||||
self.__transport_is_tcp = False
|
||||
self.__client_rtp_addr = None
|
||||
self.__playing = False
|
||||
self.__sequence_number = pyb.rng() & 0xFFFF
|
||||
self.__ssrc = pyb.rng()
|
||||
print("IP Address:Port %s:%d\nRunning..." % self.__myaddr)
|
||||
|
||||
def register_setup_cb(self, cb): # public
|
||||
self.__setup_cb = cb
|
||||
|
||||
def register_play_cb(self, cb): # public
|
||||
self.__play_cb = cb
|
||||
|
||||
def register_pause_cb(self, cb): # public
|
||||
self.__pause_cb = cb
|
||||
|
||||
def register_teardown_cb(self, cb): # public
|
||||
self.__teardown_cb = cb
|
||||
|
||||
def __send_rtsp_response(self, code, name, extra=""): # private
|
||||
self.__tcp__socket.send("RTSP/1.0 %d %s\r\n%s\r\n" % (code, name, extra))
|
||||
|
||||
def __send_rtsp_response_cseq(self, code, name, seq, extra=""): # private
|
||||
self.__send_rtsp_response(code, name, "CSeq: %d\r\n%s" % (seq, extra))
|
||||
|
||||
def __send_rtsp_response_ok(self, seq, extra=""): # private
|
||||
self.__send_rtsp_response_cseq(200, "OK", seq, extra)
|
||||
|
||||
def __parse_rtsp_request(self, data): # private
|
||||
if data[0] == 0x24: return # Interleaved RTCP Packet
|
||||
if data[0] >= 0x80: return # Ressambled TCP
|
||||
s = list(filter(lambda x: x and not x.startswith("User-Agent"), data.decode().splitlines()))
|
||||
if s and len(s) >= 2:
|
||||
line0 = s[0].split(' ')
|
||||
request = line0[0]
|
||||
self.__pathname = re.sub("rtsp(u)?://[a-zA-Z0-9\-\.]+(:\d+)?(/)?", '/', line0[1])
|
||||
if self.__pathname != '/' and self.__pathname.endswith('/'):
|
||||
self.__pathname = self.__pathname[:-1]
|
||||
if line0[2] == "RTSP/1.0":
|
||||
line1 = s[1].split(' ')
|
||||
if line1[0] == "CSeq:":
|
||||
seq = int(line1[1])
|
||||
if request == "OPTIONS":
|
||||
if len(s) >= 3:
|
||||
m = re.match("(Proxy-)?Require: (\S)+", s[2])
|
||||
if m:
|
||||
self.__send_rtsp_response_cseq(551, "Option not supported", seq, "Unsupported: %s\r\n" % m.group(2))
|
||||
return
|
||||
self.__send_rtsp_response_ok(seq, "Public: DESCRIBE, SETUP, PLAY, PAUSE, TEARDOWN\r\n")
|
||||
return
|
||||
elif request == "DESCRIBE":
|
||||
payload = "v=0\r\no=- %d %d IN IP4 %s\r\ns=OpenMV Video\r\nt=0 0\r\nm=video 0 RTP/AVP 26" % (pyb.rng(), pyb.rng(), self.__myip)
|
||||
self.__send_rtsp_response_ok(seq, "Content-Type: application/sdp\r\nContent-Length: %d\r\n\r\n%s" % (len(payload) + 2, payload))
|
||||
return
|
||||
elif request == "SETUP":
|
||||
if len(s) >= 3:
|
||||
m = re.match("Transport: RTP/AVP(/UDP)?;unicast;client_port=(\d+)-(\d+)", s[2])
|
||||
if m:
|
||||
self.__transport_is_tcp = False
|
||||
self.__client_rtp_port = int(m.group(2))
|
||||
self.__client_rtcp_port = int(m.group(3))
|
||||
self.__client_rtp_addr = (self.__client_addr[0], self.__client_rtp_port)
|
||||
self.__client_rtcp_addr = (self.__client_addr[0], self.__client_rtcp_port)
|
||||
self.__session = pyb.rng()
|
||||
self.__ssrc = pyb.rng()
|
||||
self.__send_rtsp_response_ok(seq, "%s;server_port=%d-%d;ssrc=%d\r\nSession: %d\r\n" % (s[2], self.__client_rtp_port, self.__client_rtcp_port, self.__ssrc, self.__session))
|
||||
if self.__setup_cb: self.__setup_cb(self.__pathname, self.__session)
|
||||
return
|
||||
m = re.match("Transport: RTP/AVP/TCP;unicast;interleaved=(\d+)-(\d+)", s[2])
|
||||
if m:
|
||||
self.__transport_is_tcp = True
|
||||
self.__client_rtp_channel = int(m.group(1))
|
||||
self.__client_rtcp_channel = int(m.group(2))
|
||||
self.__session = pyb.rng()
|
||||
self.__ssrc = pyb.rng()
|
||||
self.__send_rtsp_response_ok(seq, "%s\r\nSession: %d\r\n" % (s[2], self.__session))
|
||||
if self.__setup_cb: self.__setup_cb(self.__pathname, self.__session)
|
||||
return
|
||||
elif request == "PLAY":
|
||||
if len(s) >= 3:
|
||||
m = re.match("Session: (\d+)", s[2])
|
||||
if m:
|
||||
self.__playing = True
|
||||
self.__send_rtsp_response_ok(seq, "RTP-Info: url=%s;seq=%d\r\n" % (line0[1], self.__sequence_number))
|
||||
if self.__play_cb: self.__play_cb(self.__pathname, int(m.group(1)))
|
||||
return
|
||||
elif request == "PAUSE":
|
||||
if len(s) >= 3:
|
||||
m = re.match("Session: (\d+)", s[2])
|
||||
if m:
|
||||
self.__playing = False
|
||||
self.__send_rtsp_response_ok(seq)
|
||||
if self.__pause_cb: self.__pause_cb(self.__pathname, int(m.group(1)))
|
||||
return
|
||||
elif request == "TEARDOWN":
|
||||
if len(s) >= 3:
|
||||
m = re.match("Session: (\d+)", s[2])
|
||||
if m:
|
||||
self.__playing = False
|
||||
self.__send_rtsp_response_ok(seq)
|
||||
if self.__teardown_cb: self.__teardown_cb(self.__pathname, int(m.group(1)))
|
||||
return
|
||||
else:
|
||||
self.__send_rtsp_response_cseq(501, "Not Implemented", seq)
|
||||
return
|
||||
self.__send_rtsp_response(400, "Bad Request")
|
||||
|
||||
def __valid_socket(self): # private
|
||||
if self.__transport_is_tcp: return self.__client_rtp_channel is not None
|
||||
else: return self.__valid_udp_socket() and self.__client_rtp_addr is not None
|
||||
|
||||
def __settimeout(self, timeout): # private
|
||||
if self.__transport_is_tcp: self.__tcp__socket.settimeout(timeout)
|
||||
else: self.__udp__socket.settimeout(timeout)
|
||||
|
||||
def __send(self, data): # private
|
||||
if self.__transport_is_tcp: return self.__tcp__socket.send(struct.pack(">BBH", 0x24, self.__client_rtp_channel, len(data)) + data)
|
||||
else: return self.__udp__socket.sendto(data, self.__client_rtp_addr)
|
||||
|
||||
def __close_socket(self): # private
|
||||
if self.__transport_is_tcp: pass
|
||||
else: self.__close_udp_socket()
|
||||
|
||||
def __send_rtp(self, image_callback, quality): # private
|
||||
img = image_callback(self.__pathname, self.__session).compress(quality)
|
||||
if img.width() >= 2040: raise ValueError("Maximum width is 2040")
|
||||
if img.height() >= 2040: raise ValueError("Maximum height is 2040")
|
||||
i = 0
|
||||
l = img.size()
|
||||
rtp_header_size = 12
|
||||
jpeg_header_size = 8
|
||||
max_packet_size = 1400 - rtp_header_size - jpeg_header_size
|
||||
if self.__transport_is_tcp: max_packet_size -= 4
|
||||
if self.__valid_socket():
|
||||
try:
|
||||
self.__settimeout(0.1)
|
||||
timestamp = (pyb.millis() * 90) & 0xFFFFFFFF
|
||||
while l:
|
||||
rtp_header = struct.pack(">BBHII",
|
||||
0x80, 0x9A if l <= max_packet_size else 0x1A,
|
||||
self.__sequence_number, timestamp, self.__ssrc)
|
||||
self.__sequence_number = (self.__sequence_number + 1) & 0xFFFF
|
||||
jpeg_header = struct.pack(">IBBBB", i, 0, quality, int(img.width() // 8), int(img.height() // 8))
|
||||
img_data = img.bytearray()[i:i+min(l, max_packet_size)]
|
||||
img_data_len = len(img_data)
|
||||
data_len = self.__send(rtp_header + jpeg_header + img_data)
|
||||
if not data_len: break
|
||||
i += img_data_len
|
||||
l -= img_data_len
|
||||
if l: self.__close_socket()
|
||||
except OSError: self.__close_socket()
|
||||
|
||||
def stream(self, image_callback, quality=90): # public
|
||||
while True:
|
||||
if self.__valid_tcp_socket():
|
||||
try:
|
||||
self.__tcp__socket.settimeout(0.1)
|
||||
while True:
|
||||
data = self.__tcp__socket.recv(1400)
|
||||
if data and len(data): self.__parse_rtsp_request(data)
|
||||
if self.__playing: self.__send_rtp(image_callback, quality)
|
||||
except OSError: self.__close_tcp_socket()
|
||||
Loading…
Reference in New Issue
Block a user