search

homeworkc / lazycast

A Simple Wireless Display Receiver
GNU General Public License v3.0
688 stars 89 forks source link

Supporting alternate display orientations #121

Open alexwhittemore opened 3 months ago

alexwhittemore commented 3 months ago

I was able to compile and use lazycast per the readme with basically no fuss (after picking the right legacy RasPi OS version!), thanks!

My Pi is connected to a Waveshare 5.5" OLED touch screen that I'm trying to use as the target, but this display has a quirk that it adopts portrait orientation by default, and must be rotated in Linux for landscape use.

It seems Lazycast makes an assumption about the display orientation and just smacks the remote image center-screen rotated right-side-up, scaled to fit.

There's probably some easy spot to add in a 90* rotation to this, but I haven't looked yet.

image

homeworkc commented 2 months ago

I believe this could be done but I haven't implemented it in h264.c yet. Omxplayer has an option to do rotation and from a quick look at its code, it seems that an extra parameter OMX_DISPLAY_ROT90 has to be set.

homeworkc commented 2 months ago

Actually I found an easier method. Add this snippet at Line 422 of h264.c:

OMX_CONFIG_ROTATIONTYPE rotation;
memset(&rotation, 0, sizeof(rotation));
rotation.nSize = sizeof(rotation);
rotation.nVersion.nVersion = OMX_VERSION;
rotation.nRotation = 90;
rotation.nPortIndex = 90;
if (OMX_SetConfig(ILC_GET_HANDLE(video_render), OMX_IndexConfigCommonRotate, &rotation) != OMX_ErrorNone)
status = -15;
alexwhittemore commented 2 months ago

I haven't had a chance to try that yet but thank you so much for suggesting it!