Oct 2011 – Feb 2017 · 5 yrs 4 mos · Bangalore

• Working in Aurora, Cerify and Hydra projects.
• EBP tests optimization for Audio / Video by blocking decoding in Aurora engine. This has reduced test duration from more than 2 hours to less than 5 mins for 4 hours content.
• Primary Responsibility of transitioning Hydra player from Client.
• Implementation of C# Master control service and design of Node control service for Hydra 5.0 Architecture.
• Implementation of VDCP protocol for Hydra 4.5 player, as well as key board short cut tray application.
• Parallel execution of AVC reference and optimized decoders. This brought significant gains for Bit stream tests.
• Stabilization of Automatic Regression framework.
• MPEG-4 studio profile reference decoder optimization – 50x to 19x. This apart developed input elementary stream buffering logic, which brought this further down to 8X.
• Multi-threading Audio tests for a major performance improvement.
• SMPTE 302M De-muxer development, which enhanced Dolby support in Cerify.
• HE-AAC V2 enhancement by developing LATM De-muxer support.
• Vast experience in product support.

Dec 2008 – Sep 2011 · 2 yrs 9 mos · Bangalore

• NOS Project transition from Finland.
• DirectShow filters for MPEG2 and H264 decoders - Development, Integration into NOS & Product Support in M-platform transcoding engine.
• Matroska format DirectShow Source Filter development.
• On2VP6 Cortex A8 optimization integration into Symbian platform & Video Benchmarking in Bridge Hardware. Gain was 15% on top of ARM 11 optimizations.
• Video Assets Stability and SMP Safety on Bridge Hardware.
• Code Coverage changes with a target of more than 80% and Quality Improvement of Video Decoders using CTC++.
• Writable Data Paging Study on RAPU hardware (paging mechanism which will reduce RAM requirement by a huge margin and will lead to heavy cost savings).
• Sound Pressure Limiter ARM-11 Porting and Optimization for s40 platform from 35 MCPS to 6 MCPS in C-Level optimizations.
• Instrumental in solving video performance issues, memory leaks and crashes in N8.
• Analyzed lots of Video and audio defects in various Nokia mobiles.

Sep 2007 – Nov 2008 · 1 yr 2 mos

• Initially into audio transcoding logic and System level integration of codecs (AMR and AAC).
• Porting SHP based Video Editor to Linux.
• System level integration with UI with all other features for iUCC.
• Plug-ins for video effects, noise suppressor in GStreamer, for preview player.
• SISO proprietary codecs integration.
• Video effects like Sepia, monotone, blur, noise and solarize converted from RGB format to YUV, to give almost 30% reduction in time for applying these effects.
• Optimization of these effects with respect to ARM926EJS, achieving significant time savings.
• Posterize and Rain effect created newly in YUV, to existing list of features.
• BMP decoder to suit transition logic.
• Pitch control, JPEG libraries included and integrated in framework.
• Memory leaks free code base, using memory validator, rational purifier and klocworks.
• Converted transition algorithm to YUV & frame wise, to reduce memory requirement.
• Included noise suppressor module in framework.
• Changes in transcoder framework to accommodate all new effects, like applying stickers, video based transition.
• Test cases planning to be used by test team.
• Over all responsibility of the module to Korean market.

Feb 2005 – Aug 2007 · 2 yrs 6 mos

• 1) Ported and optimized CDMA-SMV, GSM-AMR, HR codecs in Speech, MPEG4 SP Encoder in Video in Ceva-X (VLIW processor).
• 2) Led and maintained Co-verification for DGB-501x chipset, interacting with the VLSI team in DGB. major contribution was in Deblocking accelerator validation.
• 3) Led MP3 Encoder implementation in ARM 926EJS.
• 4) Led system level integration of speech codecs.
• 5) Audio driver development in Ceva-X for real time execution of speech codecs.
• 6) Demoed a speech recorder and a player application using codecs and proprietary OS.
• 7) Developed a DMA queue scheme which is successfully used in all video codecs.