emscripten-core/emscripten
Dec 2024 – Jan 2026
8 Months active
Languages Used
PythonCJavaScriptAssemblyC++ShellYAMLJSON
Technical Skills
Python scriptingaudio processingbuild system managementAudio ProcessingC/C++Python Scripting
Carl Woffenden
PROFILE
Carl Woffenden
Chris Woffenden contributed to the emscripten-core/emscripten repository by building and stabilizing advanced audio processing features, focusing on Audio Worklet correctness, multichannel support, and cross-browser reliability. He implemented configurable render quantum sizing and enhanced test coverage for multithreaded audio scenarios, using C, C++, and JavaScript to address low-level memory alignment, atomic locking, and WebAssembly integration. His work included refactoring and documenting complex code paths, improving CI automation, and clarifying documentation for 64-bit conversions. Through targeted bug fixes and regression tests, Chris improved interop reliability and long-term maintainability, demonstrating depth in audio programming, browser automation, and embedded systems.
Overall Statistics
Feature vs Bugs
73%Features
Repository Contributions
18Total
Bugs
3
Commits
18
Features
8
Lines of code
1,588
Activity Months8
Your Network
101 peopleWork History
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 performance summary for emscripten-core/emscripten focused on improving reliability and correctness of audio processing under multi-threaded scenarios. Delivered a robust test harness enhancement to validate atomic locking in a complex data structure, strengthening CI feedback and reducing flaky test behavior in audio worklet code paths.
1 Commits • 1 Features
Jan 1, 2026January 2026 performance summary for emscripten-core/emscripten focused on improving reliability and correctness of audio processing under multi-threaded scenarios. Delivered a robust test harness enhancement to validate atomic locking in a complex data structure, strengthening CI feedback and reducing flaky test behavior in audio worklet code paths.
January 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary focusing on delivering a configurable render quantum size for the Audio Worklet within the emscripten codebase, extending testing and documentation, and stabilizing memory allocation for larger render frames.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary focusing on delivering a configurable render quantum size for the Audio Worklet within the emscripten codebase, extending testing and documentation, and stabilizing memory allocation for larger render frames.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for emscripten-core/emscripten focused on reliability and clarity in memory handling and 64-bit conversion semantics. Key changes delivered include Audio Worklet Memory Alignment Improvements to prevent stack-related issues by replacing a hardcoded alignment with STACK_ALIGN and adding documentation about potential max_align_t changes; and 64-bit Conversions Documentation Clarification to specify when conversions to BigInt occur based on memory and pointer width configurations. These efforts reduce runtime risk, improve cross-platform consistency, and simplify future maintenance.
3 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for emscripten-core/emscripten focused on reliability and clarity in memory handling and 64-bit conversion semantics. Key changes delivered include Audio Worklet Memory Alignment Improvements to prevent stack-related issues by replacing a hardcoded alignment with STACK_ALIGN and adding documentation about potential max_align_t changes; and 64-bit Conversions Documentation Clarification to specify when conversions to BigInt occur based on memory and pointer width configurations. These efforts reduce runtime risk, improve cross-platform consistency, and simplify future maintenance.
September 2025
August 2025
3 Commits • 1 Features
Aug 1, 2025August 2025: Audio Worklet stabilization and code hygiene in emscripten-core/emscripten. Delivered targeted stability fixes for wasm64 audio context retrieval and added a TLS-data preservation test for audio worklet parameter processing, followed by a focused refactor and documentation of the worklet processing code. These changes reduce runtime risk for audio workloads in WebAssembly and improve long-term maintainability of the Audio Worklet subsystem.
August 2025
3 Commits • 1 Features
Aug 1, 2025August 2025: Audio Worklet stabilization and code hygiene in emscripten-core/emscripten. Delivered targeted stability fixes for wasm64 audio context retrieval and added a TLS-data preservation test for audio worklet parameter processing, followed by a focused refactor and documentation of the worklet processing code. These changes reduce runtime risk for audio workloads in WebAssembly and improve long-term maintainability of the Audio Worklet subsystem.
July 2025
1 Commits
Jul 1, 2025July 2025 focused on improving correctness and test coverage for Embind bindings in the emscripten project. Delivered a targeted bug fix to Embind dynCalls signatures for C++ float types, along with a regression test to prevent regressions. This work improves interop reliability for C++-to-JS bindings and strengthens test coverage for float handling in dynCalls.
1 Commits
Jul 1, 2025July 2025 focused on improving correctness and test coverage for Embind bindings in the emscripten project. Delivered a targeted bug fix to Embind dynCalls signatures for C++ float types, along with a regression test to prevent regressions. This work improves interop reliability for C++-to-JS bindings and strengthens test coverage for float handling in dynCalls.
July 2025
February 2025
6 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for emscripten-core/emscripten focusing on expanding CI coverage for audio features and stabilizing AudioWorklet tests across browsers. Implemented CI-based audio testing and comprehensive browser integration to improve test coverage, reliability, and cross-browser compatibility. Demonstrated strong automation, testing discipline, and cross-team collaboration to deliver measurable business value in release readiness and quality gates.
February 2025
6 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for emscripten-core/emscripten focusing on expanding CI coverage for audio features and stabilizing AudioWorklet tests across browsers. Implemented CI-based audio testing and comprehensive browser integration to improve test coverage, reliability, and cross-browser compatibility. Demonstrated strong automation, testing discipline, and cross-team collaboration to deliver measurable business value in release readiness and quality gates.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for emscripten-core/emscripten focusing on delivering multichannel AudioWorklet testing enhancements. Delivered targeted test coverage for multichannel audio processing, including mixing and copying of multiple stereo and mono inputs to various stereo and mono outputs, ensuring correct handling of different stack sizes and audio routing scenarios. This work strengthens regression safety and cross-platform audio correctness, enabling faster identification of edge-case issues in audio pipelines.
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for emscripten-core/emscripten focusing on delivering multichannel AudioWorklet testing enhancements. Delivered targeted test coverage for multichannel audio processing, including mixing and copying of multiple stereo and mono inputs to various stereo and mono outputs, ensuring correct handling of different stack sizes and audio routing scenarios. This work strengthens regression safety and cross-platform audio correctness, enabling faster identification of edge-case issues in audio pipelines.
January 2025
December 2024
1 Commits
Dec 1, 2024December 2024: Delivered a critical bug fix for Audio Worklet in strict mode within emscripten-core/emscripten, improving stability and compatibility for audio workloads across strict builds.
December 2024
1 Commits
Dec 1, 2024December 2024: Delivered a critical bug fix for Audio Worklet in strict mode within emscripten-core/emscripten, improving stability and compatibility for audio workloads across strict builds.
Activity
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Quality Metrics
Correctness90.0%
Maintainability85.6%
Architecture85.6%
Performance80.0%
AI Usage21.2%
Skills & Technologies
Programming Languages
AssemblyCC++JSONJavaScriptPythonShellYAML
Technical Skills
Audio ProcessingAudio WorkletsBrowser AutomationBrowser TestingBuild SystemsC ProgrammingC programmingC++ developmentC/C++C/C++ developmentCI/CDCode CommentingContinuous IntegrationDocumentationEmbedded systems
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