def content_to_sdpstream(content):
if content.description is None:
raise ValueError('Missing media description')
if content.transport is None:
raise ValueError('Missing media transport')
media_stream = SDPMediaStream(str(content.description.media), 0, 'RTP/AVP')
formats = []
attributes = []
for item in content.description.payloads:
formats.append(item.id)
attributes.append(SDPAttribute('rtpmap', '%d %s/%d' % (item.id, str(item.name), item.clockrate)))
if item.maxptime:
attributes.append(SDPAttribute('maxptime', str(item.maxptime)))
if item.ptime:
attributes.append(SDPAttribute('ptime', str(item.ptime)))
if item.parameters:
parameters_str = ';'.join(('%s=%s' % (p.name, p.value) for p in item.parameters))
attributes.append(SDPAttribute('fmtp', '%d %s' % (item.id, str(parameters_str))))
media_stream.formats = map(str, formats)
media_stream.attributes = attributes # set attributes so that _codec_list is generated
if content.description.encryption:
if content.description.encryption.required:
media_stream.transport = 'RTP/SAVP'
for crypto in content.description.encryption.cryptos:
crypto_str = '%s %s %s' % (crypto.tag, crypto.crypto_suite, crypto.key_params)
if crypto.session_params:
crypto_str += ' %s' % crypto.session_params
media_stream.attributes.append(SDPAttribute('crypto', str(crypto_str)))
if isinstance(content.transport, jingle.IceUdpTransport):
if content.transport.ufrag:
media_stream.attributes.append(SDPAttribute('ice-ufrag', str(content.transport.ufrag)))
if content.transport.password:
media_stream.attributes.append(SDPAttribute('ice-pwd', str(content.transport.password)))
for candidate in content.transport.candidates:
if not ipv4_re.match(candidate.ip):
continue
candidate_str = '%s %d %s %d %s %d typ %s' % (candidate.foundation, candidate.component, candidate.protocol.upper(), candidate.priority, candidate.ip, candidate.port, candidate.typ)
if candidate.related_addr and candidate.related_port:
candidate_str += ' raddr %s rport %d' % (candidate.related_addr, candidate.related_port)
media_stream.attributes.append(SDPAttribute('candidate', str(candidate_str)))
if content.transport.remote_candidate:
remote_candidate = content.transport.remote_candidate
remote_candidates_str = '%d %s %d' % (remote_candidate.component, remote_candidate.ip, remote_candidate.port)
media_stream.attributes.append(SDPAttribute('remote-candidates', str(remote_candidates_str)))
elif isinstance(content.transport, jingle.RawUdpTransport):
# Nothing to do here
pass
else:
raise ValueError
# Set the proper connection information, pick the first RTP candidate and use that
try:
candidate = next(c for c in content.transport.candidates if c.component == 1 and ipv4_re.match(c.ip))
except StopIteration:
raise ValueError
media_stream.connection = SDPConnection(str(candidate.ip))
media_stream.port = candidate.port
return media_stream
def content_to_sdpstream(content):
if content.description is None or content.transport is None:
raise ValueError
media_stream = SDPMediaStream(str(content.description.media), 0, 'RTP/AVP')
formats = []
attributes = []
for item in content.description.payloads:
formats.append(item.id)
attributes.append(SDPAttribute('rtpmap', '%d %s/%d' % (item.id, str(item.name), item.clockrate)))
if item.maxptime:
attributes.append(SDPAttribute('maxptime', str(item.maxptime)))
if item.ptime:
attributes.append(SDPAttribute('ptime', str(item.ptime)))
if item.parameters:
parameters_str = ';'.join(('%s=%s' % (p.name, p.value) for p in item.parameters))
attributes.append(SDPAttribute('fmtp', '%d %s' % (item.id, str(parameters_str))))
media_stream.formats = map(str, formats)
media_stream.attributes = attributes # set attributes so that _codec_list is generated
if content.description.encryption:
if content.description.encryption.required:
media_stream.transport = 'RTP/SAVP'
for crypto in content.description.encryption.cryptos:
crypto_str = '%s %s %s' % (crypto.tag, crypto.crypto_suite, crypto.key_params)
if crypto.session_params:
crypto_str += ' %s' % crypto.session_params
media_stream.attributes.append(SDPAttribute('crypto', str(crypto_str)))
if isinstance(content.transport, jingle.IceUdpTransport):
if content.transport.ufrag:
media_stream.attributes.append(SDPAttribute('ice-ufrag', str(content.transport.ufrag)))
if content.transport.password:
media_stream.attributes.append(SDPAttribute('ice-pwd', str(content.transport.password)))
for candidate in content.transport.candidates:
if not ipv4_re.match(candidate.ip):
continue
candidate_str = '%s %d %s %d %s %d typ %s' % (candidate.foundation, candidate.component, candidate.protocol.upper(), candidate.priority, candidate.ip, candidate.port, candidate.typ)
if candidate.related_addr and candidate.related_port:
candidate_str += ' raddr %s rport %d' % (candidate.related_addr, candidate.related_port)
media_stream.attributes.append(SDPAttribute('candidate', str(candidate_str)))
if content.transport.remote_candidate:
remote_candidate = content.transport.remote_candidate
remote_candidates_str = '%d %s %d' % (remote_candidate.component, remote_candidate.ip, remote_candidate.port)
media_stream.attributes.append(SDPAttribute('remote-candidates', str(remote_candidates_str)))
elif isinstance(content.transport, jingle.RawUdpTransport):
# Nothing to do here
pass
else:
raise ValueError
# Set the proper connection information, pick the first RTP candidate and use that
try:
candidate = next(c for c in content.transport.candidates if c.component == 1 and ipv4_re.match(c.ip))
except StopIteration:
raise ValueError
media_stream.connection = SDPConnection(str(candidate.ip))
media_stream.port = candidate.port
return media_stream
