ossrs/ffmpeg-webrtc
Dec 2024 – Mar 2026
2 Months active
Languages Used
AssemblyCMakefile
Technical Skills
Assembly LanguageAssembly ProgrammingAssembly languageEmbedded SystemsHEVC DecodingLow-level Optimization
sunyuechi
PROFILE
Sunyuechi
Over four months, this developer focused on low-level performance engineering across projects such as tesseract-ocr/tesseract, ossrs/ffmpeg-webrtc, and google/XNNPACK. They delivered RISC-V Vector (RVV) acceleration for matrix-vector operations in Tesseract OCR, enabling hardware-accelerated workloads using Assembly and C++. In ossrs/ffmpeg-webrtc, they implemented RVV-based optimizations for VVC/HEVC video decoding, improved test coverage, and enhanced code maintainability. Their work in google/XNNPACK added RVV FP16-to-FP32 conversion kernels with multi-vector-length support, updating build systems for broader hardware compatibility. Emphasizing code optimization, embedded systems, and software maintenance, they consistently improved performance, reliability, and maintainability in hardware-specific code paths.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
13Total
Bugs
0
Commits
13
Features
5
Lines of code
1,310
Activity Months4
Your Network
398 peopleSame Organization
@iscas.ac.cn27
Sakura286Member
Yixuan ChenMember
Liao ChunyuMember
daichengrongMember
Ruoqing HeMember
JiaweiMember
Liutong HANMember
Yang LiuMember
Ma KeMember
Shared Repositories
371
Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026Concise monthly summary for 2026-03 focusing on ossrs/ffmpeg-webrtc. This period centered on codebase cleanup in the RISC-V path, improving maintainability and reducing potential build issues. No major bug fixes were logged this month; effort prioritized debt reduction and clarity in critical code paths.
1 Commits • 1 Features
Mar 1, 2026Concise monthly summary for 2026-03 focusing on ossrs/ffmpeg-webrtc. This period centered on codebase cleanup in the RISC-V path, improving maintainability and reducing potential build issues. No major bug fixes were logged this month; effort prioritized debt reduction and clarity in critical code paths.
March 2026
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly work summary for google/XNNPACK focused on delivering RISC-V RVV FP16 to FP32 conversion kernels and associated build/config updates, expanding hardware support and performance on RVV-capable devices.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly work summary for google/XNNPACK focused on delivering RISC-V RVV FP16 to FP32 conversion kernels and associated build/config updates, expanding hardware support and performance on RVV-capable devices.
December 2024
10 Commits • 2 Features
Dec 1, 2024Month: 2024-12 — Concise monthly summary highlighting delivery of high-impact features, critical bug fixes, overall impact, and technology/skills demonstrated. Emphasis on business value: performance, reliability, and test robustness for media decoding on RISC-V, along with improved maintainability of RVV-based paths in ossrs/ffmpeg-webrtc.
10 Commits • 2 Features
Dec 1, 2024Month: 2024-12 — Concise monthly summary highlighting delivery of high-impact features, critical bug fixes, overall impact, and technology/skills demonstrated. Emphasis on business value: performance, reliability, and test robustness for media decoding on RISC-V, along with improved maintainability of RVV-based paths in ossrs/ffmpeg-webrtc.
December 2024
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary focusing on high-impact performance work in the Tesseract OCR engine. Highlights include the delivery of RISC-V Vector (RVV) acceleration support, enabling RVV-accelerated matrix-vector operations and setting the groundwork for hardware-accelerated OCR workloads.
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary focusing on high-impact performance work in the Tesseract OCR engine. Highlights include the delivery of RISC-V Vector (RVV) acceleration support, enabling RVV-accelerated matrix-vector operations and setting the groundwork for hardware-accelerated OCR workloads.
Activity
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Quality Metrics
Correctness87.6%
Maintainability84.6%
Architecture84.6%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyCC++CMakeMakefileShell
Technical Skills
Assembly LanguageAssembly ProgrammingAssembly languageCompiler DevelopmentEmbedded SystemsHEVC DecodingLow-level OptimizationLow-level programmingOptimizationPerformance OptimizationRISC-VRISC-V AssemblyRISC-V Vector ExtensionSIMDTesting
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
tesseract-ocr/tesseract
Nov 2024 – Nov 2024
1 Month active
Languages Used
AssemblyCC++
Technical Skills
Compiler DevelopmentEmbedded SystemsPerformance OptimizationRISC-VSIMD
google/XNNPACK
Jan 2025 – Jan 2025
1 Month active
Languages Used
CCMakeShell
Technical Skills
Embedded SystemsPerformance OptimizationRISC-VVectorization