pencode | Complex payload encoder | Generator Utils library

I encounter a weird situation...

When the container width less than 100%, the columns always wrap like this: set layout as fitColumns, without width specified The code is:

I have a layout in which i have header, sidebar and main section.

I have a fixed sidebar. Inside that have 35 section. Scroll bar is not covering all content. My scroll bar is visible till 32 section.

I have tried a lot but unable to do. i think problem is with .sidenav property top

Here is my code PenCode Link

Background: I'm encoding NV12 buffers into h264 video stream wrapped in MPEG4 container using SinkWriter. Everything works fine but one problem though, as the SinkWriter abstracts the low-level encoder configurations I'm unable to control the properties like GOP size, B-picture count, CODECAPI_AVEncCommonRateControlMode, etc.

The problem is due to the fact that the SinkWriter instantiates the encoder transform only after the SetInputMediaType call, and we will be able to get the CodecAPI instance only after that point. So, we have no way to control the encoder and configure necessary props before all this happens, it also never honours further changes to the encoder through CodecAPI instance.

Experiments: I tried the PropertyStore(MF_SINK_WRITER_ENCODER_CONFIG) approach but nothing seemed to be changing (It could be a platform/encoder specific behaviour), I could also see a lot of people complaining about unpredictable behaviours with these APIs. Then, I came across this MSDN thread (Almost 7 years old post) in which the user described how he dealt with this problem by locally registering a custom class factory on Windows7 machine.

Problem: Having the MSDN thread as a reference, I tried implementing IClassFactory and registering it through MFTRegisterLocal but the CreateInstance function is never getting called for me (Windows 10 machine). I'm only getting the QueryInterface method called for IID_IClassFactory and IID_IMFAttributes interfaces instead. And, the SinkWriter seems to be proceeding with fetching the MFT on its own.

I understand I might be doing something wrong, and I'm not an expert in COM. Is there any other way I could achieve this?

Custom class factory implementation:

I have a pointer on IMFTransform *pEncoder. How can i get GUID encoder from this pointer, if IMFTransform::GetAttributes return E_NOTIMPL?

The following program shows the flow of a transcoder from the NVIDIA's NVTranscoder project from the Video_Codec_SDK_8.0.14.

The decoder output each frame with NV12 format. However, for my coding part, the frame I received only get the Y component channel, how can I get all the YUV components channel?

Besides, how can I write back the CUdeviceptr after some processing?

I'm trying to use WIC to load an image into an in-memory buffer for further processing then write it back to a file when done. Specifically:

1. Load the image into an IWICBitmapFrameDecode.
2. The loaded IWICBitmapFrameDecode reports that its pixel format is GUID_WICPixelFormat24bppBGR. I want to work in 32bpp RGBA, so I call WICConvertBitmapSource.
3. Call CopyPixels on the converted frame to get a memory buffer.
4. Write the memory buffer back into an IWICBitmapFrameEncode using WritePixels.

This results in a recognizable image, but the resulting image is mostly blueish, as if the red channel is being interpreted as blue.

If I call WriteSource to write the converted frame directly, instead of writing the memory buffer, it works. If I call CopyPixels from the original unconverted frame (and update my stride and pixel formats accordingly), it works. It's only the combination of WICConvertBitmapSource plus the use of a memory buffer (CopyPixels + WritePixels) that causes the problem, but I can't figure out what I'm doing wrong.

Here's my code.

I have a question about make file using gcc, below is my code in makefile. I got cannot specify -o when generating multiple output files error, but I just cant see where the problem is. Can someone point out my mistakes? Thanks!