From fat pixels to tiny triangles

Video Stream

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7 months 4 weeks ago #29 by David
Video Stream was created by David
Just out of curiosity, a video stream from the SD card. Files to be written on a freshly formatted SD card for an ‘acceptable’ data rate. Conversion of the Goldorak opening sequence into 691 frames.

 
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7 months 4 weeks ago #30 by Franck
Replied by Franck on topic Video Stream
Awesome ! I wonder if a RLE compressed sequence (decompressed using the line() function) would be faster.

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7 months 4 weeks ago - 7 months 4 weeks ago #31 by David
Replied by David on topic Video Stream
I don’t think drawing an image line by line with line() would be faster than loading a fully decompressed one. In my tests, even copying 16-pixel lines with memset already takes quite a bit of time to fill a big area.
It might work with images made specially for RLE compression (no patterns, big flat colour areas, etc.).

But finally,when I did this test, I saw that you can get a perfectly smooth quarter-screen video.   
Last edit: 7 months 4 weeks ago by David.
The following user(s) said Thank You: cponsard

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2 weeks 6 days ago #104 by cponsard
Replied by cponsard on topic Video Stream
Hi great demo
I could test fine after a recompile
(maybe due to firmware change ?)
btw what is the role of that variable ?
cheers
christophe

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1 week 4 days ago #106 by David
Replied by David on topic Video Stream
Hi Christophe,

Wich variable ?

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