HW Accelerated JPEG encoder for X86 and DS 6.3

[bwsw]

According to the changelog, DS 6.3 introduced an HW-accelerated JPEG encoder.

[bwsw]

CHECK:

• HW JPEGDEC (JETSON) CHECK
• ENC IDR FRAMES

[denisvmedyantsev]

NVidia changed docker container set - https://catalog.ngc.nvidia.com/orgs/nvidia/collections/deepstream_sdk. We have to double-check our builds. It might be better to build a completely custom docker image based on GStreamer and DS SDK, including only what we need.

[denisvmedyantsev]

The bug with jpeg decoding via nvv4l2decoder on Jetson is still relevant for DS 6.3 (checked with nvcr.io/nvidia/deepstream-l4t:6.3-samples).

[denisvmedyantsev]

DS 6.3 fixed the bug with no IDR frames after nvv4l2h264enc.

gst-launch-1.0 videotestsrc num-buffers=1000 ! nvvideoconvert ! nvv4l2h264enc ! filesink location=test.h264

then

ffprobe -v error -select_streams v:0 -count_frames -show_entries stream=nb_read_frames -skip_frame nokey test.h264

For DS 6.2 gives nb_read_frames=1, for DS 6.3 - nb_read_frames=4.

DS 6.3 nvv4l2h26Xenc supports idrinterval parameter (default=256) in addition to iframeinterval on dGPU (and Jetson).

[denisvmedyantsev]

The current Savant code tries to use nvencoder first. If the user specified output_frame: jpeg, Savant will try to build the encoder using nvjpegenc and will only use jpegenc if nvjpegenc is not available (#44). Thus, there is nothing to do.