This adds a --frame-size option to read payload binary files with a fixed frame size directly. The file must not contain RTP headers. In addition '--rate' and '--duration' can be used to configure the timing.

Sponsored-by: On-Waves ehf --- openbsc/contrib/rtp/gen_rtp_header.erl | 34 ++++++++++++++++++++++++++++---- 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/openbsc/contrib/rtp/gen_rtp_header.erl b/openbsc/contrib/rtp/gen_rtp_header.erl index cc4c61c..47839c1 100755 --- a/openbsc/contrib/rtp/gen_rtp_header.erl +++ b/openbsc/contrib/rtp/gen_rtp_header.erl @@ -28,6 +28,7 @@ main(Args) -> DefaultOpts = [{format, state}, {ssrc, 16#11223344}, + {rate, 8000}, {pt, 98}], {PosArgs, Opts} = getopts_checked(Args, DefaultOpts), log(debug, fun (Dev) -> @@ -144,7 +145,8 @@ show_help() -> "Options:~n" ++ " -h, --help this text~n" ++ " --version show version info~n" ++ - " -i, --file=FILE reads payload from state file~n" ++ + " -i, --file=FILE reads payload from file (state format by default)~n" ++ + " -f, --frame-size=N read payload as binary frames of size N instead~n" ++ " -p, --payload=HEX set constant payload~n" ++ " --verbose=N set verbosity~n" ++ " -v increase verbosity~n" ++ @@ -153,6 +155,8 @@ show_help() -> " --format=carray use a C array for output~n" ++ " -s, --ssrc=SSRC set the SSRC~n" ++ " -t, --type=N set the payload type~n" ++ + " -r, --rate=N set the RTP rate [8000]~n" ++ + " -D, --duration=N set the packet duration in RTP time units [160]~n" ++ " -d, --delay=FLOAT add offset to playout timestamp~n" ++ "~n" ++ "Arguments:~n" ++ @@ -165,6 +169,21 @@ getopts([ "--file=" ++ File | R], Opts) -> getopts(R, [{file, File} | Opts]); getopts([ "-i" ++ T | R], Opts) -> getopts_alias_arg("--file", T, R, Opts); +getopts([ "--frame-size=" ++ N | R], Opts) -> + Size = list_to_integer(N), + getopts(R, [{frame_size, Size}, {in_format, bin} | Opts]); +getopts([ "-f" ++ T | R], Opts) -> + getopts_alias_arg("--frame-size", T, R, Opts); +getopts([ "--duration=" ++ N | R], Opts) -> + Duration = list_to_integer(N), + getopts(R, [{duration, Duration} | Opts]); +getopts([ "-D" ++ T | R], Opts) -> + getopts_alias_arg("--duration", T, R, Opts); +getopts([ "--rate=" ++ N | R], Opts) -> + Rate = list_to_integer(N), + getopts(R, [{rate, Rate} | Opts]); +getopts([ "-r" ++ T | R], Opts) -> + getopts_alias_arg("--rate", T, R, Opts); getopts([ "--version" | _], _Opts) -> show_version(), halt(0); @@ -328,9 +347,10 @@ write_packets(Dev, DataSource, P = #rtp_packet{}, F, L, O, Opts) -> Format = proplists:get_value(format, Opts, state), Ptime = proplists:get_value(duration, Opts, 160), Delay = proplists:get_value(delay, Opts, 0), + Rate = proplists:get_value(rate, Opts, 8000), case next_payload(DataSource) of {Payload, DataSource2} -> - write_packet(Dev, 0.020 * F + Delay, + write_packet(Dev, Ptime * F / Rate + Delay, P#rtp_packet{seqno = F, timestamp = F*Ptime+O, payload = Payload}, Format), @@ -376,12 +396,18 @@ read_packets(Dev, Opts) -> read_packets(Dev, Opts, Format).

read_packets(Dev, Opts, Format) -> - case read_packet(Dev, Format) of + case read_packet(Dev, Opts, Format) of eof -> []; Tuple -> [Tuple | read_packets(Dev, Opts, Format)] end.

-read_packet(Dev, Format) -> +read_packet(Dev, Opts, bin) -> + Size = proplists:get_value(frame_size, Opts), + case file:read(Dev, Size) of + {ok, Data} -> {0, #rtp_packet{payload = iolist_to_binary(Data)}}; + eof -> eof + end; +read_packet(Dev, _Opts, Format) -> case read_packet_line(Dev, Format) of {Time, Bin} -> {Time, parse_rtp_packet(Bin)}; eof -> eof