Not optimal but we very rarely use this function.

TODO(fbarchard): Consider read_msa_ir(). TODO(fbarchard): Add unittest.

16 pixels. 8 UV values upsampled to 16 UV, mixed with 16 Y producing 16 ARGB (64 bytes).

8 pixels. 4 UV values upsampled to 8 UV, mixed with 8 Y producing 8 ARGB (32 bytes).

TODO(fbarchard): Consider SSSE3 2 step conversion. Convert NV12 to RGB24 with matrix

Convert NV21 to RGB24 with matrix

Helper for ColorPicker4()

ScaleARGB a ARGB. This function in turn calls a scaling function suitable for handling the desired resolutions.

Scale plane vertically with bilinear interpolation.

Helper function to scan for EOI marker (0xff 0xd9).

Get bit n in the array

Pop trailing draw command (used before merging or presenting to user) Note that this leaves the ImDrawList in a state unfit for further commands, as m

Helper: Text buffer for logging/accumulating text