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streamers @ afabfeb9

Name Size Revision Age Author Comment
  Chunkiser afabfeb9 over 10 years Luca Abeni Update the libav-based input to the new input API
Makefile 1.5 KB afabfeb9 over 10 years Luca Abeni Update the libav-based input to the new input API
README.txt 3.13 KB 0f2ac03e over 10 years Luca Abeni Minimal informal README
dbg.h 146 Bytes e64fc7e5 almost 11 years Luca Make debug output optional
dumbstreamer.c 2.06 KB ce80b058 over 10 years Luca Abeni Explicit timing information in the input Confl...
input-stream-dummy.c 532 Bytes ce80b058 over 10 years Luca Abeni Explicit timing information in the input Confl...
input-stream.h 303 Bytes ce80b058 over 10 years Luca Abeni Explicit timing information in the input Confl...
input.c 1.4 KB afabfeb9 over 10 years Luca Abeni Update the libav-based input to the new input API
input.h 219 Bytes 2abd0645 over 10 years Luca Abeni Add include guards
loop-mt.c 4 KB ce80b058 over 10 years Luca Abeni Explicit timing information in the input Confl...
loop.c 2.89 KB afdc8db4 over 10 years Luca Abeni Fix up the timing...
loop.h 186 Bytes 2abd0645 over 10 years Luca Abeni Add include guards
net_helpers.c 917 Bytes 568bd1bd over 10 years Luca Abeni Make eth0 the default interface
net_helpers.h 110 Bytes 2abd0645 over 10 years Luca Abeni Add include guards
output.c 2.12 KB e8654707 over 10 years Luca Output module: do not overwrite an already stor...
output.h 102 Bytes 2abd0645 over 10 years Luca Abeni Add include guards
streaming.c 1.92 KB afdc8db4 over 10 years Luca Abeni Fix up the timing...
streaming.h 323 Bytes afdc8db4 over 10 years Luca Abeni Fix up the timing...
utils.mak 267 Bytes ecf6e64a over 10 years Luca Abeni Better selection of compile options and librari...

Latest revisions

# Date Author Comment
afabfeb9 01/29/2010 09:51 AM Luca Abeni

Update the libav-based input to the new input API

afdc8db4 01/28/2010 10:56 PM Luca Abeni

Fix up the timing...

ce80b058 01/28/2010 10:56 PM Luca Abeni

Explicit timing information in the input

Conflicts:

streaming.c
72f8e6fe 01/28/2010 10:53 PM Luca Abeni

Split the input module in common part & stream reading

2abd0645 01/28/2010 10:52 PM Luca Abeni

Add include guards

62e428da 01/28/2010 01:55 PM Luca Abeni

Try to compute the period

f9a86917 01/28/2010 12:08 PM Luca Abeni

Try to identify the various A/V streams...

4136911a 01/27/2010 02:33 PM Luca Abeni

Update to the new net helper API

615e8354 01/26/2010 08:13 PM Luca Abeni

Use the official types from msg_type.h

568bd1bd 01/25/2010 07:55 PM Luca Abeni

Make eth0 the default interface

View all revisions | View revisions

README


This is DumbStreamer, the dumb streamer!
As such, do not expect it to be smart...

Here is a quick'n'dirty, informal, description about how to compile
and test the thing (do not expect to find any information about what
the dumb streamer is, or how it works. If you need such information,
please drop me an email - ):

Ok, here we go...
- To download the DumbStreamer
git clone http://www.disi.unitn.it/~abeni/PublicGits/DumbStreamer.git
- To compile it:
cd DumbStreamer
make prepare
make
You can type "make FFDIR=<path to an ffmpeg build>" to compile a version
of the streamer with a minimal libav-based input module.
You can type "make DEBUG=WhyNot" to compile a "debug" version of the
dumb streamer (prints out a lot of crap and debug information, not really
useful in practice unless you are trying to hunt a bug).
You can type "make THREADS=YesPlease" to compile the multi-thread version
of the streamer. Not tested with libav*.
You can type "make GRAPES=<path to your grapes>" to use a different build
of GRAPES
- To test it:
First, I suggest to test the non-libav-based version. It generates
"fake" text chunks, which are useful for debugging
1) build as above (make prepare; make)
2) start a source: ./dumbstreamer
3) in a different shell, start a client: ./dumbstreamer -P 5555 -i 127.0.0.1 -p 6666
4) start another client: ./dumbstreamer -P 5556 -i 127.0.0.1 -p 6666
5) ...
Explanation: "-P <port>" is the local port used by the client (6666 by
default). Since I am testing source and multiple clients on the same
machine, every client has to use a different port number. "-i <IP addr>"
is the source IP, and "-p <port>" is the port number used by the source.
After this testing, I suggest recompiling with debug on, and with threads.
Test as above, and enjoy.
- To see something interesting:
You have to build a libav-based version:
1) cd /tmp; svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg
2) cd ffmpeg; ./configure; make -j 3; cd ..
3) git clone http://www.disi.unitn.it/~abeni/PublicGits/DumbStreamer.git
4) cd DumbStreamer; make prepare; make FFDIR=/tmp/ffmpeg
Now, prepare a (video-only) input file:
5) /tmp/ffmpeg -i <whatever.avi> -r 25 -an -vcodec mpeg4 -f m4v test.m4v
6) The input currently needs to be called "input.mpg", so
ln -s test.m4v input.mpg
Start the source. For the moment, you need to manually specify the rate
(will be fixed in the future):
7) ./dumbstreamer -t 40 -c 50
create a FIFO for the output, and attach a player to it:
8) mkfifo out; ffplay out
start a client:
9) ./dumbstreamer -P 5555 -p 6666 -i 127.0.0.1 > out
- Enjoy... ;-)

A lot of cleanup is needed, and the input module is still far from being
reasonable (but this is not our business ;-)
But you can now enjoy some video...

Remember! The DumbStreamer is dumb! Peers try to send chunks to the source...
Scheduling is blind...
All of this is very bandwidth inefficient. If you want to start more clients,
please increase the upload bandwidth of the source (dumbstreamer -t 40 -c 200,
or even more...).

Enjoy your streaming,
Luca

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