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https://github.com/thead-yocto-mirror/process-linker
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58 lines
2.3 KiB
Markdown
58 lines
2.3 KiB
Markdown
# Process Linker Repository
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This git module contains a linker library which can be used to connect two process for data sharing and passing file descriptor.
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- **src**: c source code of process linker library.
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- **inc**: public header files of process linker library. User should include these files to use process linker.
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- **test**: sample applications. Two sample applications, server and client, are implimented for test and reference purpose.
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## How to build
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Just run `make` and binaries will be generated in **output** folder.
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## How to use
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- **libplink.so**: shared library of process link. See API doc for more details of usage.
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- **plinkserver**: sample server application
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```shell
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usage: ./plinkserver [options]
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Available options:
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-l plink file name (default: /tmp/plink.test)
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-i input YUV file name (mandatory)
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-f input color format (default: 3)
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2 - I420
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3 - NV12
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4 - P010
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14 - Bayer Raw 10bit
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15 - Bayer Raw 12bit
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-w video width (mandatory)
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-h video height (mandatory)
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-s video buffer stride in bytes (default: video width)
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-n number of frames to send (default: 10)
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```
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- **plinkclient**: sample client application
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```shell
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./plinkclient [frames] [plink server name] [dump file name]
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```
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- **plinkstitcher**: sample implementation of stitching filter, which can stitch up to 4 source videos (NV12 or RAW) into one as NV12 output
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```
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usage: ./plinkstitcher [options]
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Stitch multiple pictures to one. Maximum # of pictures to be stitched is 4
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Available options:
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-i<n> plink file name of input port #n (default: /tmp/plink.stitch.in<n>). n is 0 based.
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-o plink file name of output port (default: /tmp/plink.stitch.out)
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-l layout (default: 0)
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0 - vertical
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1 - horizontal
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2 - matrix
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-f output color format (default: 3)
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3 - NV12
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-w output video width (default: 800)
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-h output video height (default: 1280)
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-s output video buffer stride (default: video width)
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--help print this message
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```
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Please note the sample applications have dependency on **video-memory** module for memory allocating and dma-buf operations.
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