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Running the Standalone Demos
3-6
The application runs on the ARM using Linux. The video signal is passed
to video encoders and decoders on the DSP by the Codec Engine.
Shared memory is used when passing data.
To use this demo from the command line, see Section A.1.1,
Encode/Decode Demo Command Line .
3.3.2 About the Encode Demo
Like the Decode demo, the Encode demo also encodes video.
In addition, it also encodes audio or speech. The audio/speech source is
the microphone.
The encoded data is written to files on the DVEVM’s hard disk drive. The
possible filenames are demo.264, demo.mpeg4, demompeg4.g711, and
demo264.g711. Older versions of these files are overwritten as needed.
Output is not decoded and sent to the LCD display or speakers other than
to show the settings and dynamic data collected about the load and rates.
Note that you can use only a speech encoder, not an audio encoder. The
supported video algorithms are MPEG4 (.mpeg4 file extension) and
H.264 (.264 file extension). The supported speech algorithm is G.711
(.g711 extension).