OMX buffer and FD

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi.
Can i use nvbuf_utils function with OMX buffers allоcated with parameter NVX_PARAM_USENVBUFFER true setting (or without it) ?

This is example of working code:

// some code above have OMX_BUFFERHEADERTYPE* buffer
int fd_omx;
ExtractFdFromNvBuffer(buffer->pBuffer, &fd_omx);

// try use it with another nvbuffer fd created by NvBufferCreateEx

NvBufferTransform(fd_omx, fd, &transform_params)

How can i use in OMX stack nvbuffers created by NvBufferCreateEx?

2

Hi,
Please refer to
[url]https://devtalk.nvidia.com/default/topic/1037450/jetson-tx2/use-gstreamer-or-tegra_multimedia_api-to-decode-video-would-be-more-efficient-and-increase-throughput-/post/5270860/#5270860[/url]

On 32.1, it is not required to call NvReleaseFd() along with ExtractFdFromNvBuffer().