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46 lines
1.1 KiB
46 lines
1.1 KiB
package NGCP::Rtpclient::RTP;
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use strict;
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use warnings;
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use Time::HiRes qw(time);
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use Math::BigInt;
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sub new {
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my ($class, $cb_obj) = @_;
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my $self = {};
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bless $self, $class;
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$self->{cb_obj} = $cb_obj;
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$self->{ssrc} = int(rand(2**32));
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$self->{next_send} = time();
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$self->{ptime} = 20;
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$self->{clockrate} = 8000;
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$self->{timestamp} = Math::BigInt->new(int(rand(2**32)));
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$self->{seq} = rand(2**16);
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$self->{payload} = 100;
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return $self;
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}
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sub timer {
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my ($self) = @_;
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time() < $self->{next_send} and return;
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my $hdr = pack("CCnNN", 0x80, 0x00, $self->{seq}, $self->{timestamp}->bstr(), $self->{ssrc});
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my $payload = chr(rand(256)) x $self->{payload}; # XXX adapt to codec
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$self->{cb_obj}->rtp_send($hdr . $payload);
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$self->{seq}++;
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$self->{seq} > 0xffff and $self->{seq} -= 0x10000;
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$self->{next_send} = $self->{next_send} + $self->{ptime} / 1000;
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$self->{timestamp} += $self->{clockrate} / (1.0 / ($self->{ptime} / 1000)); # XXX might be fractional
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$self->{timestamp} > 0xffffffff and $self->{timestamp} -= Math::BigInt->new('0x100000000');
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}
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1;
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