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FrescoLogic / FL2000

Fresco Logic FL2000 Linux/Android Kernel driver
GNU General Public License v2.0
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Pixel compression on USB2.0(HS) #8

Open Linux-Beginner opened 7 years ago

Linux-Beginner commented 7 years ago

About pixel compression on USB2.0(HS), It would be greatly appreciated if you could explain the details.

As I looked at the sample source code, Pixel data was being converted by fl2000_ioctl.c:pixel_swap() when USB3.0(SS). As it is, converted data was being transmitted by bulkout transfer.

On Windows and USB 2.0(HS) connection, When I try to analyze with USB analyzer, It looks like the pixel data is compressed and transmitted. Do you need similar processing on Linux?

As I looked at the sample source code, I think "fl2000_compression.c" seems to be compression processing, is it correct? If correct, could you tell me how to use "fl2000_compression.c"?

midaszhou commented 7 years ago

How about calling fl2000_compression_gravity(...) after swap render buffer

ulli-kroll commented 7 years ago

On Windows and USB 2.0(HS) connection, When I try to analyze with USB analyzer, It looks like the pixel data is compressed and transmitted. Do you need similar processing on Linux?

Can you test on Windows using HDMI ??

LinJiabang commented 5 years ago

USB2.0 compression support is just committed . Please checkout the latest driver. Let us know if this works for you.