?266 - open H.266 codec reference implementation

Note: The project will be rename soon due to the Multicoreware scramble my x266 registering trademarks, the new project name will be decide in later, it sounds not affect develop H.266 codec.

?266 is an open source highly optimal software/hardware co-design architecture implementation of the next generation H.266 video codec.

It is demonstration research of industrialized implement video coding H.266. as soon as H.266 specification release, I will publishing my industrialize H.266 codec.

?266 based on Software/Hardware Cooperative concept and custom RISC-V processor with audio/video/image/deep_learning SIMD extension.

Building

• RISC-V
  
  • Build:
    
    • build risv
      
    • build rtl_risv
      
  • Verify:
    
    • ./run_asm.sh risv
      
    • ./run_bmark.sh risv
      

Performance

Ver	FPGA / ASIC	LUT / Area	MHz
0.3.1	XC7Z030	2,203	159.0
0.3.1	XCZU9EG	2,207	245.3
0.3	130 nm	0.64 mm^2	400.0

Case	rdcycle	rdinstret	CPI
median	7,334	5,256	1.40
multiply	43,514	26,911	1.62
qsort	213,491	158,322	1.35
towers	6,821	5,293	1.29
vvadd	4,511	2,709	1.67
rsort	305,357	177,314	1.72
spmv	1,039,346	776,241	1.34
Total	1,620,374	1,152,046	1.41

Prebuilt

• C/C++ interface code can be obtained from /src_c
  
• Verilog code can be obtained from /src_ver
  

Note

• The ?266's RISC-V NON-Standard Vector Extension ONLY compile and disassembly by ?266 project modified llvm suite. You may build bu yourself or please contract to get prebuilt Centos-6 binary package.

License

?266 is distributed under the terms of the Private/Education ONLY License. See COPYRIGHT for more details.

See LICENSE.TXT for more details.

Creator on November 2015
Copyright (c) 2015-2020 Min Chen
Contact: Min Chen <chenm003@{163, gmail}.com>