Function gifski::c_api::gifski_add_frame_rgba

source · [−]

#[no_mangle]
pub unsafe extern "C" fn gifski_add_frame_rgba(
    handle: *const GifskiHandle, 
    frame_number: u32, 
    width: u32, 
    height: u32, 
    pixels: *const RGBA8, 
    presentation_timestamp: f64
) -> GifskiError

Expand description

Pixels is an array width×height×4 bytes large. The array is copied, so you can free/reuse it immediately.

Presentation timestamp (PTS) is time in seconds, since start of the file (at 0), when this frame is to be displayed. For a 20fps video it could be frame_number/20.0. Frames with duplicate or out-of-order PTS will be skipped.

The first frame should have PTS=0. If the first frame has PTS > 0, it’ll be used as a delay after the last frame.

Colors are in sRGB, uncorrelated RGBA, with alpha byte last.

Returns 0 (GIFSKI_OK) on success, and non-0 GIFSKI_* constant on error.