User:Bluddy

Bluddy
Name	Yotam Barnoy
Team Member since	2009-09-22
Working on	PSP platform PSP Optimization
Personal webpage/BLOG	-
Email	-

Worked On

• PSP
  • Suspend/resume support
  • Plugin support (ELF loader)
  • Console-oriented virtual keyboard
  • D-pad directional support
  • Eliminating the evil undead flickering bug (it was a tough one)
  • Refactoring, redesign and cleanup

Working On

• PSP Optimization
  • Rendering speedup: done and makes vsync super accurate (better than PC)
  • MP3 using Media Engine: mostly done
    • Turn into thread for better efficiency (allowing music more processing time without slowdown)
  • Video Speedup
    • Actually harder than expected: it's hard to find codecs that do the kind of work that the VFPU will improve
    • Check other codecs for possible speedups using VFPU/alignment
  • Tests: done
    • how much reading is done by MP3 rendering/movie playback? How much will we need to cache? done. Reads chunks of 15-25KB preceded by small 4KB reads. Whole MP3 loads are a problem (200KB+).
    • How often do we read from the memory stick when we're going fast (movies)? Can we use a thread to do async reading? Is there enough time between reads?
  • Improve memcpy: alignment, rotation
    • Memcpy is done. Not sure how to improve it with VFPU.
    • Memmove can also be improved -- needs reverse memcpy.
  • No More SDL: done.
  • Threads for audio: consumer and producer
• Aspect Ratio
  • Option to keep AR for display. Should be easy.
• Timidity
  • • A lot of work. May improve speed over midi and sound better.

To Do

• PSP
  • MP3 playback with Media Engine
  • Optimize speed in general
  • Optimize video playback speed
  • Use libTimidity for music
• Generic virtual keyboard: take my keyboard and make it available to all. Involves switching from bitmaps to vectors.
• Generic ELF loader
• Speed up seeks in huge MP3/Ogg files using index.
  • Load the index, and if updated save every 5 mins or so?