Module cl 

CL (per-pixel nibble chroma) decoder — also called “chunky” or “per-pixel” chroma.

Payload layout (planar)

[Y0, Y1, ..., Y(N-1), CbCr0, CbCr1, ..., CbCr(N-1)]

• Y — 1 byte per pixel (full 8-bit luma).
• CbCr — 1 byte per pixel, packed nibbles: high nibble = Cr, low nibble = Cb. Each chroma nibble is 4-bit (0–15) and upscaled to 8-bit by << 4.

In total: 2 bytes per pixel × N pixels.

Example for 2 pixels:

Byte 0: Y0
Byte 1: Y1
Byte 2: (Cr0 << 4) | Cb0
Byte 3: (Cr1 << 4) | Cb1

Output is BGRA 8-bit per channel (via BT.601 YUV→RGB conversion).

Functions

decode

Decode a CL (per-pixel nibble chroma) frame to BGRA8 output.