chalmers-revere / opendlv-video-vpx-decoder

OpenDLV Microservice to decode a VPX frame (VP8 or VP9) into a shared memory

Moved to https://git.opendlv.org.

OpenDLV Microservice to decode video frames from VP8 or VP9 into a shared memory

This repository provides source code to decode broadcasted video frames in VP8 or VP9 format into a shared memory area for the OpenDLV software ecosystem.

Table of Contents

• Dependencies
• Usage
• Build from sources on the example of Ubuntu 16.04 LTS
• License

Dependencies

You need a C++14-compliant compiler to compile this project.

The following dependency is part of the source distribution:

• libcluon -

The following dependencies are downloaded and installed during the Docker-ized build:

• libvpx 1.7.0 - - Google Patent License Conditions
• libyuv - - Google Patent License Conditions

Usage

To run this microservice using docker-compose, you can simply add the following section to your docker-compose.yml:

version: '2' # Must be present exactly once at the beginning of the docker-compose.yml file
services:    # Must be present exactly once at the beginning of the docker-compose.yml file
    video-vpx-decoder:
        image: chalmersrevere/opendlv-video-vpx-decoder-multi:v0.0.7
        restart: on-failure
        network_mode: "host"
        ipc: "host"
        volumes:
        - /tmp:/tmp
        environment:
        - DISPLAY=${DISPLAY}
        command: "--cid=111 --name=imageData"

As this microservice is connecting to an OD4Session to receive VP8 or VP9 frames to decode them into a shared memory area using SysV IPC, the docker-compose.yml file specifies the use of ipc:host. The parameter network_mode: "host" is necessary to receive VP8 or VP9 frames broadcasted from other microservices running in an OD4Session from OpenDLV. The folder /tmp is shared into the Docker container to provide tokens describing the shared memory area. The parameters to the application are:

• --cid=111: Identifier of the OD4Session to listen for VP8 or VP9 frames
• --id=2: Optional identifier to listen only for those VP8 or VP9 frames with the matching senderStamp of the OD4Session
• --name=XYZ: Name of the shared memory area to create for storing the ARGB image data
• --verbose: Display decoding information and render the image to screen (requires X11; run xhost + to allow access to you X11 server)

Build from sources on the example of Ubuntu 16.04 LTS

To build this software, you need cmake, C++14 or newer, libyuv, libvpx, and make. Having these preconditions, just run cmake and make as follows:

mkdir build && cd build
cmake -D CMAKE_BUILD_TYPE=Release ..
make && make test && make install

License

• This project is released under the terms of the GNU GPLv3 License