capture_no_signal_mode

Updated: April 19, 2023

Types of no signal modes

Synopsis:

#include <vcapture/capture.h>
enum capture_no_signal_mode {
    CAPTURE_NO_SIGNAL_DEFAULT_MODE = 0,
    CAPTURE_NO_SIGNAL_NOISE_MODE,
    CAPTURE_NO_SIGNAL_BLACK_MODE,
    CAPTURE_NO_SIGNAL_BLUE_MODE,
    CAPTURE_NO_SIGNAL_TABLE_MODE
};

Data:

CAPTURE_NO_SIGNAL_DEFAULT_MODE
Default behavior; defined by driver or hardware (unknown).
CAPTURE_NO_SIGNAL_NOISE_MODE
Show color or black-and-white noise (snow) on the display if there isn't an input video source.

This is a common mode for hardware that doesn't support detection of video source signals

CAPTURE_NO_SIGNAL_BLACK_MODE
Fill all frames with black (or close to black) color if no video source signal state is detected.
CAPTURE_NO_SIGNAL_BLUE_MODE
Fill all frames with blue (or close to blue) color if no video source signal state is detected.
CAPTURE_NO_SIGNAL_TABLE_MODE
Use a hardware or software pre-defined picture (usually with text "NO SIGNAL") if no video source signal state is detected.

Library:

libcapture