Commit graph

9 commits

Author SHA1 Message Date
Marek Vasut
4c92d4096e bayer2rgb: Support video/x-bayer 10/12/14/16 bit depths
Add support for 10/12/14/16 bit depths . This consists of multiple parts.
First is the parsing of caps, which pulls out the bitness and endianness
from the video/x-bayer format.

Second, gst_bayer2rgb_split_and_upsample_horiz() is split into two similar
functions, one for 8bit bayer handling and another for 16bit bayer handling.
The content is basically identical, except one uses 8bpp and the other 16bpp
inputs and outputs, and they each use different ORC code to match. The 16bpp
variant also handles endian swapping. There is now a wrapper called
gst_bayer2rgb_split_and_upsample_horiz() which selects the correct function
based on bpp from the parser.

Third, gst_bayer2rgb_process() is extended to handle both 8bit and 16bit
bayer data. Yet again there are matching ORC functions to handle the 16bit
data. This time however the 16bit handling of data is slightly special. The
ORC is not able to emit opcodes for 'x2 mergelq', so the trick here is to
store the BG and GR longs into separate 'dtmp' temporary buffer, and then
do one more ORC post-processing step, compensate for the less-than-16bpp
bitness using left shift, and reorder them into the destination frame
using 'mergelq' .

Example usage:
```
$ gst-launch-1.0 videotestsrc ! \
    video/x-bayer,width=512,height=512,format=bggr16le ! \
    bayer2rgb ! \
    video/x-raw,format=RGBA64_LE ! \
    videoconvert ! \
    autovideosink
```

Example usage:
```
$ gst-launch-1.0 videotestsrc ! \
    video/x-raw,width=512,height=512,format=ARGB ! \
    rgb2bayer ! \
    video/x-bayer,format=bggr12le ! \
    bayer2rgb ! \
    video/x-raw,format=RGBA64_LE ! \
    videoconvert ! \
    autovideosink
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
9d1a750117 bayer2rgb: Add comments explaining gst_bayer2rgb_process()
Add comments regarding which LINE()s point to which data in the
temporary buffer and a large comment explaining how the buffer
is processed. This will hopefully be useful to someone, as the
code is not obvious. No functional change.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
920851945f bayer2rgb: Add comment on bayer_orc_horiz_upsample
Explain how the bayer_orc_horiz_upsample function works and
what it does with the pixels, as this may not be obvious.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
4efe11a705 bayer2rgb: Pass filter pointer into gst_bayer2rgb_split_and_upsample_horiz()
Instead of passing a single element of GstBayer2RGB structure into the
gst_bayer2rgb_split_and_upsample_horiz(), pass the entire pointer and
let the funciton pick out whatever it needs out of the structure. This
is a preparatory patch. No functional change.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
fbd02b3e2a bayer2rgb: Pass all parameters to LINE() macro
Pass all three parameters used by the LINE() macro to the LINE() macro
and unroll the code for readability. Add more comments regarding which
of these LINE()s point to which data in the temporary buffer to make
the code less confusing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
8bec6828f4 bayer2rgb: Fold src_stride into gst_bayer2rgb_process()
The source stride parameter can be easily obtained from GstBayer2RGB
structure, do it within gst_bayer2rgb_process() and drop the parameter.
No functional change.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
ddcb45ffc0 bayer2rgb: Inline the j=0 value
The j variable is used as an iterator further down in this code, but
here it can be just inlined in the macro parameters to make the code
easier to read. This is done in preparation for further changes. No
functional change.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Marek Vasut
484e31c1d9 bayer2rgb: Disable in-place transform
The bayer2rgb process implemented doesn't support in-place tranform.
This element doesn't implement a "transform_ip" vmethod of
GstBaseTransform it will revert to using the "tranform" vmethod.
It's misleading to set it to TRUE, here. Change this to FALSE.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4686>
2023-06-15 08:26:12 +00:00
Thibault Saunier
019971a3c7 Move files from gst-plugins-bad into the "subprojects/gst-plugins-bad/" subdir 2021-09-24 16:14:36 -03:00
Renamed from gst/bayer/gstbayer2rgb.c (Browse further)