topic Re: Using rs2_get_video_stream_resolution in Items with no label

Using rs2_get_video_stream_resolution

MAbdo2 — Tue, 05 Jun 2018 17:33:49 GMT

I wish to get the image sizes by calling the rs2_get_video_stream_resolution API. I am unclear as to what the 1st parameters passed in should be and how/where I would get this parameters. Any snippet of code to show to use this API is appreciated.

My code looks like this:

rs2_get_video_stream_resolution(Rs2StreamProfile,

&Width,

&Height,

NULL);

What should I put for "Rs2StreamProfile"?

Thanks,

Re: Using rs2_get_video_stream_resolution

idata — Wed, 06 Jun 2018 16:29:06 GMT

Hello MoA,

Thank you for your interest in the Intel RealSense Technology.

In regards to your query, the following sample, demonstrates how to get stream profiles for sensors: https://github.com/IntelRealSense/librealsense/blob/13f3db2d7576b06162230a3af92b502aa5a94736/examples/sensor-control/rs-sensor-control.cpp

You can also follow https://github.com/IntelRealSense/librealsense/blob/0040d1f21b2f6e0b9d6e6cb7153fb12acdd8796b/examples/sensor-control/api_how_to.h api_how_to.h for detailed documentation and explanations, on the following link: https://github.com/IntelRealSense/librealsense/blob/0040d1f21b2f6e0b9d6e6cb7153fb12acdd8796b/examples/sensor-control/readme.md

Let me know if this is helpful.

Regards,

Casandra

Re: Using rs2_get_video_stream_resolution

MAbdo2 — Tue, 12 Jun 2018 17:48:42 GMT

Thank you for the update.

Concerning the stream selection, I looked up the "how_to" section, but it really doesn't provide the solution I am looking for. I am not interested in finding out how many different stream profiles a sensor can provide ..., rather I need to the know the image resolution of whatever video stream is already selected. Think of the situation as two (2) simple steps, shown below:

Step 1 : Select the device (somehow, by index, by serial number, whatever). So, we now have our device selected

Step 2 : Find the resolution of the image that would be acquired, if the pipe starts. This is where my problem is, I just need to know what resolution an image that would be taken by the pipe would have. I just want to know the resolution of the next immediate image that pipe would produce; I really don't care about how many streams there could potentially be supported, etc. etc.

What is the best way to achieve Step 2 above?

Re: Using rs2_get_video_stream_resolution

idata — Thu, 14 Jun 2018 16:48:43 GMT

Hello MoA,

The api_how_to.h file shows how to cycle through the stream profiles for a given sensor in the function, static rs2::stream_profile choose_a_streaming_profile(const rs2::sensor& sensor). The stream_profile has a bool called stream_profile.is_default(); that will tell you if the stream_profile is the default or not. Once you have the default profile you can find out the height, width, fps. See the rest of the code in the choose_a_streaming_profile function to see how to get these parameters in lines 420 - 429.

Regards,

Jesus G.

Intel Customer Support