This is not an official Google product.
libndash is a C++ library that provides all the functionality one would need to build an adaptive streaming media player (not including decoding/rendering frames to a display). It provides the following functionality:
- download and parse DASH manifests
- download segments from fragmented mp4 audio/video streams
- parse video/audio frames from segments
- deliver frames to a client decoder
- switch to different representations based on network conditions
- notify the client when protected content is encountered
- provide seek/jump and trick play functionality (forward/backward)
This project is based on a translation of ExoPlayer v1 source files (https://github.com/google/ExoPlayer/tree/release-v1) with non-DASH related functionality removed. It is best suited for environments that require a native code solution for adaptive streaming.
sdl_player is a sample media player written on top of libndash. It demonstrates how to implement the final steps of decoding and rendering frames delivered by libndash using ffmpeg/SDL/Alsa.
For Debian-type systems, the following packages should be installed:
- libevent-dev
- libmodpbase64-dev
- libpthread-stubs0-dev
- libxml2-dev
- libcurl4-gnutls-dev
- libsdl2-dev
- libsdl2-mixer-dev
- libbz2-dev
Copy and paste:
apt-get install libevent-dev libmodpbase64-dev libpthread-stubs0-dev libxml2-dev
libcurl4-gnutls-dev libsdl2-dev libsdl2-mixer-dev libbz2-dev
If you are using a recent Debian/Ubuntu with an up to date ffmpeg:
- libavcodec-dev
- libavdevice-dev
- libavfilter-dev
- libavformat-dev
- libavresample-dev
- libavresample3
- libavutil-dev
- libswresample-dev
- libswscale-dev
- libgoogle-glog-dev
- libgflags-dev
Copy and paste:
apt-get install libavcodec-dev libavdevice-dev libavfilter-dev libavformat-dev libavresample-dev
libavresample3 libavutil-dev libswresample-dev libswscale-dev libgoogle-glog-dev libgflags-dev
Otherwise you will need to install the following from source:
-
ffmpeg (https://github.com/FFmpeg/FFmpeg)
-
gflags (https://github.com/gflags/gflags)
NOTE: If your ffmpeg was compiled with --enable-libx264, you will need to add x264 to CMakeLists.txt link rules for sdl_player.
To build:
From the top directory:
cmake . make -jX # where X is the number of cores on your machine or around there
To run the unit tests:
From the top directory:
./build/ndash_unittests --test_data_path=pwd/ndash/src
This software is licensed under Apache Software License, Version 2.0