TCP + TIFF

[Marianna Smidth Buschle]

Is it possible to send TIFF images over TCP?


Fx for JPEG I can do:

-Send:

gst-launch-1.0 v4l2src device=/dev/video4 
selection=crop,left=0,width=1024,top=0,height=1024 ! video/x-raw, 
width=1024, height=1024, framerate=24000/1000, format=GRAY8 ! jpegenc ! 
tcpserversink host=0.0.0.0 port=5000 buffers-max=48 buffers-soft-max=24 
recover-policy=1 --gst-debug=*:3

-Receive:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 ! jpegdec ! 
videoconvert ! autovideosink sync=0 --gst-debug=*:


But I get problems when I try the same with TIFF:

-Send:

gst-launch-1.0 v4l2src device=/dev/video4 
selection=crop,left=0,width=1024,top=0,height=1024 ! video/x-raw, 
width=1024, height=1024, framerate=24000/1000, format=GRAY8 ! avenc_tiff 
compression-algo=raw ! tcpserversink host=0.0.0.0 port=5000 
buffers-max=48 buffers-soft-max=24 recover-policy=1 --gst-debug=*:3

-Receive:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 ! avdec_tiff ! 
fakesink dump=1 --gst-debug=*:3

0:00:00.061036289 48696 0x5569f7c20860 WARN videodecoder 
gstvideodecoder.c:2598:gst_video_decoder_chain:<avdec_tiff0> error: 
decoder not initialized

0:00:00.061140509 48696 0x5569f7c20860 WARN basesrc 
gstbasesrc.c:3127:gst_base_src_loop:<tcpclientsrc0> error: streaming 
stopped, reason not-negotiated (-4)


If I try:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 ! image/tiff ! 
avdec_tiff ! fakesink dump=1 --gst-debug=*:3

0:00:01.230105809 48720 0x564728525860 WARN libav 
gstavviddec.c:1955:gst_ffmpegviddec_handle_frame:<avdec_tiff0> Failed to 
send data for decoding
0:00:01.230299137 48720 0x7f9f7c003440 ERROR libav :0:: Invalid TIFF header

Same with parsebin:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 ! parsebin ! 
avdec_tiff ! fakesink dump=1 --gst-debug=*:3

0:00:01.260515317 48740 0x5605ea3a5980 WARN libav 
gstavviddec.c:1955:gst_ffmpegviddec_handle_frame:<avdec_tiff0> Failed to 
send data for decoding
0:00:01.260643524 48740 0x7fcdd0002ed0 ERROR libav :0:: Invalid TIFF header

And decodebin just stalls:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 ! decodebin ! 
fakesink dump=1 --gst-debug=*:3


Moreover if I just save/load to/from file:

gst-launch-1.0 v4l2src num-buffers=1 device=/dev/video4 
selection=crop,left=0,width=1024,top=0,height=1024 ! video/x-raw, 
width=1024, height=1024, framerate=24000/1000, format=GRAY8 ! avenc_tiff 
compression-algo=raw ! filesink location=/tmp/test.tiff

Works with decodebin:

gst-launch-1.0 filesrc location=test.tiff ! decodebin ! videoconvert ! 
imagefreeze ! autovideosink sync=0 --gst-debug=*:3

Doesn't without. Same errors if trying parsebin, typefind, etc.


So I guess it has to do with being able to read the correct amount of 
data out?

I manage to make it work for files if I use both blocksize and CAPS:

gst-launch-1.0 filesrc location=test.tiff blocksize=1049964 ! 
image/tiff,width=1024,height=1024,framerate=1/1 ! avdec_tiff ! 
videoconvert ! imagefreeze ! autovideosink sync=0 --gst-debug=*:3


But it still doesnt work for TCP:

gst-launch-1.0 tcpclientsrc host=10.10.150.227 port=5000 
blocksize=1049964 ! image/tiff,width=1024,height=1024,framerate=1/1 ! 
avdec_tiff ! videoconvert ! autovideosink sync=0 --gst-debug=*:3


Best Regards

Marianna