Installation

rocDecode Python Binding, rocPyDecode, is a tool that allows users to access rocDecode APIs in both Python and C/C++ languages. It works by connecting Python and C/C++ libraries, enabling function calling and data passing between the two languages. The rocpydecode.so library is a wrapper that facilitates the use of rocDecode APIs that are written primarily in C/C++ language within Python.

Supported codecs

H.265 (HEVC) - 8 bit, and 10 bit

Prerequisites

• Linux distribution

  • Ubuntu: 20.04/ 22.04

• ROCm-supported hardware (gfx908 or higher is required)

• Install ROCm 6.2.0 or later with amdgpu-install

  • Run: --usecase=rocm

  • To install rocDecode with minimum requirements, follow the quick start instructions

• CMake 3.5 or later

  sudo apt install cmake
  

• Python3 and Python3 PIP

  sudo apt install python3-dev python3-pip
  

• PyBind11

  sudo apt install pybind11-dev
  

• rocDecode

  sudo apt install rocdecode-dev
  

• pkg-config

  sudo apt install pkg-config
  

• FFmpeg runtime and headers - for tests and samples

  sudo apt install ffmpeg libavcodec-dev libavformat-dev libavutil-dev
  

• DLPack

  sudo apt install libdlpack-dev
  

Note

• All package installs are shown with the apt package manager. Use the appropriate package manager for your operating system.

• On Ubuntu 22.04 - Additional package required: libstdc++-12-dev

sudo apt install libstdc++-12-dev

Prerequisites setup script

For your convenience, we provide the setup script, rocPyDecode-requirements.py, which installs all required dependencies. Run this script only once.

python3 rocPyDecode-requirements.py

Installation instructions

To install rocPyDecode, you can use Source install.

Source install

To build rocPyDecode from source, run:

If using bare-metal, sudo access is needed.

git clone https://github.com/ROCm/rocPyDecode.git
cd rocPyDecode
sudo pip3 install .

If using a docker environment or any system with root access. Do NOT use sudo.

git clone https://github.com/ROCm/rocPyDecode.git
cd rocPyDecode
python rocPyDecode-docker-install.py

Run tests (this requires FFmpeg dev install):

Dependencies:

python3 -m pip install --upgrade pip
python3 -m pip install -i https://test.pypi.org/simple hip-python

Run test:

cd rocPyDecode
cmake .
ctest -VV

To run tests with verbose option, use make test ARGS="-VV".

Hardware capabilities

The following table shows the codec support and capabilities of the VCN for each supported GPU architecture.

GPU Architecture	VCN Generation	Number of VCNs	H.265/HEVC	Max width, Max height - H.265	H.264/AVC	Max width, Max height - H.264
gfx908 - MI1xx	VCN 2.5.0	2	Yes	4096, 2176	Yes	4096, 2160
gfx90a - MI2xx	VCN 2.6.0	2	Yes	4096, 2176	Yes	4096, 2160
gfx940, gfx942 - MI3xx	VCN 3.0	3	Yes	7680, 4320	Yes	4096, 2176
gfx941 - MI3xx	VCN 3.0	4	Yes	7680, 4320	Yes	4096, 2176
gfx1030, gfx1031, gfx1032 - Navi2x	VCN 3.x	2	Yes	7680, 4320	Yes	4096, 2176
gfx1100, gfx1102 - Navi3x	VCN 4.0	2	Yes	7680, 4320	Yes	4096, 2176
gfx1101 - Navi3x	VCN 4.0	1	Yes	7680, 4320	Yes	4096, 2176