Texas Instruments TMS320DM6437, Руководство по началу работы, Страница: 31 / 64

Running the Demos with the PC Host Application
Running the Demonstration Software 3-11
3.3.1 Preview Mode (Capture / Display)
This mode does not use an input file or an output file. It simply captures
video from the input video device (for example, a camera) and sends it to
the display. If audio is enabled, it captures audio from the audio input (for
example, a microphone) and sends it to the speaker.
The signals are sent directly without any encoding and decoding.
3.3.2 Enc.+ Dec. Loopback Mode
This mode does not use an input file or an output file. It captures video
from the input video device (for example, a camera) and sends it to the
display. If audio is enabled, it captures audio from the audio input (for
example, a microphone) and sends it to the speaker.
The H.264 algorithm is used internally to encode and decode the video.
The G.711 algorithm is used internally to encode and decode the audio.
3.3.3 Decode from File Mode
Decode from File mode requires a video input file. If audio is enabled, it
also requires an audio input file. It decodes the input files and sends the
output signals to the display (and to the speaker if audio is enabled).
The video input file must have been encoded using H.264 or MPEG4.
The audio input file must have been encoded using G.711.
3.3.4 Encode to File Mode
Encode to File mode requires a video output file. If audio is enabled, it
also requires an audio output file. It encodes video from the input video
device (for example, a camera) and audio from the audio input and sends
the encoded signals to the files you select.
The video input file will be encoded using H.264. The audio input file will
be encoded using G.711.