RtcImage

Used to set watermark and background image properties.

typedef struct RtcImage {
  const char* url;
  int x;
  int y;
  int width;
  int height;
  int zOrder;
  double alpha;
} RtcImage;

Properties

url

HTTP/HTTPS URL of the image. Maximum length is 1024 bytes.

x

The x-coordinate of the image in the video frame (origin at top-left corner, in pixels).

y

The y-coordinate of the image in the video frame (origin at top-left corner, in pixels).

width

Width of the image in the video frame (in pixels).

height

Height of the image in the video frame (in pixels).

zOrder

Z-order index of the image.

When using a watermark array to add one or more watermarks, this must be set to a value in the range [1, 255], otherwise the SDK will return an error.
Optional in other cases, valid range is [0, 255], default is 0.
0 means bottom layer, 255 means top layer.

alpha

Opacity of the image, range [0.0, 1.0]: