Draft: tiny_mp2v_dec

The idea of the project is to create a super light mpeg2 cross-platform decoder for the possibility of its use in ARM microcontrollers with a rather low performance and a small amount of memory. The goal of the project is to achieve the highest performance from a software decoder on the Raspberry Pi 4 platform, ultra low latency, support for spatial and temporal scalability features.

How to build

1. Clone repository:

git clone https://github.com/fxslava/tiny_mp2v_dec.git | cd ./tiny_mp2v_dec

2. Generate project with cmake:

cmake -S ./ -B ./build-x64 | cd ./build-x64

3. Make it:

make .

Supported platforms

• Linux x64/aarch64
• Windows x64/aarch64

Done features

• Support SSE for x64 and NEON for aarch64
• Multithreading:
  • by pictures
  • by slices
• Supported chroma formats: 4:2:0, 4:2:2, 4:4:4

TODO

• Interlaced streams support
• Field frames support
• Spatial scalability support
• Temporal scalability support
• Enhanced data support
• Dual prime motion compensation

Status

Product is not ready for release yet, external API is incomplete. Also, the decoder is poorly tested on streams with support for current features. Nevertheless, you can test the decoder on your platform, for this you can use the sample: tiny_mp2v_dec/tiny_decoder/tiny_mp2v_dec.cpp. Run with cmd:

./tiny_mp2v_dec_sample -v 1080p_422.m2v -o output_yuv.yuv

NOTE: For performance testing, you should turn off file output.