From: Nitin Mahajan
Date: Sun, 27 Jul 2003 21:19:37 +0530
Hello !
This query is regarding 69030.Iam writing a driver for the same.
1.While I do a hardware init ,I clear the screen completely by writing zeros to complete 4MB of memory.
This Iam doing by calling memset().Iam not using any OS,this driver will be a part of indpendently developed kernel for a MIPS board.
Is there a provision where I can clear the screen very fast.Is there a provision in hardware to achieve this fast.
Of course there is. Rectangle fill is the one thing every hardware accelerator can do. Do you have specs for this chip?
2. Secondly I want to play software decoded movies at a high rate of 30 fps.Can u please tell me how will I measure this rate.
I'm not sure why you find this so hard. One choice is to decode every frame, use a stopwatch to measure how long it takes to display a clip, then divide the number of frames by the actual time it took. If you use a video player that drops frames when it gets behind, just play a clip and ask it how many frames were dropped.
However, "30 fps" is not a sufficient spec. Do you mean "30 fps" for a 320x240 movie? Are you talking about MPEG? What bit rate? 30 fps for a 1.5 Mbps movie is very different from 30 fps for an 8 Mbps movie.
- Tim Roberts, [EMAIL PROTECTED]
Providenza & Boekelheide, Inc.
