libsdl-org/aom
Jan 2026 – Apr 2026
4 Months active
Languages Used
CC++
Technical Skills
SIMD programminglow-level programmingperformance optimizationC programmingalgorithm designvideo encoding
Diksha Singh
PROFILE
Diksha Singh
Worked on performance and reliability improvements for the libsdl-org/aom AV1 encoder, delivering six features over four months. Focused on low-level optimization and multimedia processing, the work included enabling SSE4.2 SIMD paths, refactoring encoder functions to reduce redundant computations, and implementing AVX2 and SSE2 optimizations for temporal filtering. Used C and C++ to force inlining of critical functions, streamline reference frame management, and enhance high-bit-depth test reliability. Each change was validated for bit-exactness and throughput gains, resulting in measurable instruction reductions and improved maintainability. Emphasized robust benchmarking and unit testing to ensure quality and efficiency across encoding workflows.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
10Total
Bugs
0
Commits
10
Features
6
Lines of code
677
Activity Months4
Your Network
66 peopleSame Organization
@ittiam.com14
Work History
April 2026
2 Commits • 2 Features
Apr 1, 2026April 2026 monthly update for libsdl-org/aom focused on performance and reliability improvements in the AV1 encoder. Key changes include forcing inline of inter mode skipping functions to reduce call overhead and speed up encoding, and enhancing high-bit-depth temporal filter tests to improve reliability by constraining pixel values and refining plane dimensions/offset handling. These changes contribute to lower encoding latency, higher throughput in typical workflows, and more robust validation for high-bit-depth pipelines across the repository.
2 Commits • 2 Features
Apr 1, 2026April 2026 monthly update for libsdl-org/aom focused on performance and reliability improvements in the AV1 encoder. Key changes include forcing inline of inter mode skipping functions to reduce call overhead and speed up encoding, and enhancing high-bit-depth temporal filter tests to improve reliability by constraining pixel values and refining plane dimensions/offset handling. These changes contribute to lower encoding latency, higher throughput in typical workflows, and more robust validation for high-bit-depth pipelines across the repository.
April 2026
March 2026
4 Commits • 2 Features
Mar 1, 2026March 2026 performance highlights focused on encoder throughput and quality maintenance for libsdl-org/aom. Delivered two major feature streams: (1) Prune Single Reference optimization for faster encoding with ARF management improvements, and (2) AV1 temporal filtering and weight tuning with SIMD acceleration to boost per-block processing and speed-level tuning.
March 2026
4 Commits • 2 Features
Mar 1, 2026March 2026 performance highlights focused on encoder throughput and quality maintenance for libsdl-org/aom. Delivered two major feature streams: (1) Prune Single Reference optimization for faster encoding with ARF management improvements, and (2) AV1 temporal filtering and weight tuning with SIMD acceleration to boost per-block processing and speed-level tuning.
February 2026
3 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for libsdl-org/aom: focused on performance and code quality improvements in the AV1 encoder, delivering measurable efficiency gains and cleaner, more maintainable code paths without changing bit-exact output across presets.
3 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for libsdl-org/aom: focused on performance and code quality improvements in the AV1 encoder, delivering measurable efficiency gains and cleaner, more maintainable code paths without changing bit-exact output across presets.
February 2026
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 performance-focused update for libsdl-org/aom. Delivered SSE4.2 SIMD optimization for the encoder by enabling SSE4.2 in x86_simd_caps, allowing the encoder to utilize SSE4.2 instructions and reduce instruction count across common CPU configurations while preserving bit-exactness across all presets. Commit 6287954709850d3ec41d38915ef82cecdbc8ca64 documents the patch and Change-Id: Ic372e4647e586ccfe81e2c75c0da7ad43e7c2921. Impact: measurable encoder throughput improvements on modern x86 CPUs, supporting higher workloads with minimal risk. Technologies demonstrated: x86 SIMD, SSE4.2, performance benchmarking, patch management, and clean integration with the existing aom encoder codebase.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 performance-focused update for libsdl-org/aom. Delivered SSE4.2 SIMD optimization for the encoder by enabling SSE4.2 in x86_simd_caps, allowing the encoder to utilize SSE4.2 instructions and reduce instruction count across common CPU configurations while preserving bit-exactness across all presets. Commit 6287954709850d3ec41d38915ef82cecdbc8ca64 documents the patch and Change-Id: Ic372e4647e586ccfe81e2c75c0da7ad43e7c2921. Impact: measurable encoder throughput improvements on modern x86 CPUs, supporting higher workloads with minimal risk. Technologies demonstrated: x86 SIMD, SSE4.2, performance benchmarking, patch management, and clean integration with the existing aom encoder codebase.
Activity
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Quality Metrics
Correctness96.0%
Maintainability84.0%
Architecture86.0%
Performance94.0%
AI Usage22.0%
Skills & Technologies
Programming Languages
CC++
Technical Skills
AVX2C programmingC++ developmentSIMD programmingSSE2algorithm designlow-level optimizationlow-level programmingmultimedia processingperformance optimizationunit testingvideo encodingvideo processing
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