gstreamer/gst/dvbsubenc/libimagequant/nearest.h
Jan Schmidt 1cf3cae5e1 dvbsubenc: Add DVB Subtitle encoder
Add an element that converts AYUV video frames to a DVB
subpicture stream.

It's fairly simple for now. Later it would be good to support
input via a stream that contains only GstVideoOverlayComposition
meta.

The element searches each input video frame for the largest
sub-region containing non-transparent pixels and encodes that
as a single DVB subpicture region. It can also do palette
reduction of the input frames using code taken from
libimagequant.

There are various FIXME for potential improvements for now, but
it works.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1227>
2020-06-17 12:50:13 +10:00

8 lines
355 B
C

//
// nearest.h
// pngquant
//
struct nearest_map;
LIQ_PRIVATE struct nearest_map *nearest_init(const colormap *palette, const bool fast);
LIQ_PRIVATE unsigned int nearest_search(const struct nearest_map *map, const f_pixel px, const int palette_index_guess, const float min_opaque, float *diff);
LIQ_PRIVATE void nearest_free(struct nearest_map *map);