Sensoray 819 Linuxs SDK Manual do Utilizador descarregar pdf (Página 11)

S819_ReleaseBuffer

ECODE S819_ReleaseBuffer (BUFFER *buf)

Returns a buffer to the driver. It is essential to call this function after the data has been handled by the

application. Once the buffer is released members of the *buf become invalid.

S819_Close

void S819_Close (void)

SDK cleanup. Must be called before an application terminates. Must be the last call to the SDK.

S819_SetXPSwitch

ECODE S819_SetXPSwitch (int brd, int inp, int out)

Controls output video crosspoint switch. Connects selected input to selected output.

brd board index (0-based).

inp selected input channel number (1-16).

out selected output (0-3).

S819_SetXPOut

ECODE S819_SetXPOut (int brd, int mask)

Enables/disables outputs of video crosspoint switch. This allows connecting outputs of multiple

boards together and enabling one of them at a time.

brd board index (0-based).

mask bits 0-3 control outputs 0-3 (1 – enabled, 0 – disabled).

Demo application

A simple demo application (common819) is provided to illustrate the use of the SDK. The source file

(common819.c) is included. The application allows capture of multiple H.264 streams and JPEG frames

from any number of available channels. The H.264 data from each stream/channel is written into a

separate file. The files are of a fixed size, so once the end of the file is reached the recording continues

from the start of the file. This allows execution of the demo for an indefinite period of time without

running out of the disk space. The JPEG files are captured at a low rate, overwriting the old data for

each channel.

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Sensoray 819 Linuxs SDK Manual do Utilizador Página 11