Constant libjxl_sys::JXL_DEC_FRAME

pub const JXL_DEC_FRAME: JxlDecoderStatus = 1024;

Informative event by @ref JxlDecoderProcessInput “JxlDecoderProcessInput”: Beginning of a frame. @ref JxlDecoderGetFrameHeader can be used at this point. A note on frames: a JPEG XL image can have internal frames that are not intended to be displayed (e.g. used for compositing a final frame), but this only returns displayed frames, unless @ref JxlDecoderSetCoalescing was set to JXL_FALSE: in that case, the individual layers are returned, without blending. Note that even when coalescing is disabled, only frames of type kRegularFrame are returned; frames of type kReferenceOnly and kLfFrame are always for internal purposes only and cannot be accessed. A displayed frame either has an animation duration or is the only or last frame in the image. This event occurs max once per displayed frame, always later than @ref JXL_DEC_COLOR_ENCODING, and always earlier than any pixel data. While JPEG XL supports encoding a single frame as the composition of multiple internal sub-frames also called frames, this event is not indicated for the internal frames.