Commit graph

7 commits

Author SHA1 Message Date
He Junyan
db134d27a0 av1parse: set the default alignment for input and output.
1. Set the default output alignment to frame, rather than current
   alignment of obu. This make it the same behaviour as h264/h265
   parse, which default align to AU.
2. Set the default input alignment to byte. It can handle the "not
   enough data" error while the OBU alignment can not. Also make it
   conform to the comments.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1979>
2021-01-26 12:22:31 +00:00
He Junyan
5abf4ad4dd av1parse: Reset the annex_b when meet TU inside a buffer.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1979>
2021-01-26 12:22:31 +00:00
He Junyan
d83f253258 av1parse: Output each OBU when output is aligned to obu.
The current behaviour for obu aligned output is not very precise.
Several OBUs will be output together within one gst buffer. We
should output each gst buffer just containing one OBU. This is
the same way as the h264/h265 parse do when NAL aligned.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1979>
2021-01-26 12:22:31 +00:00
He Junyan
ee1f6017ac av1parse: Always copy the OBU to cache.
The current optimization when input align and out out align are
the same is not very correct. We simply copy the data from input
buffer to output buffer, but we failed to consider the dropping of
OBUs. When we need to drop some OBUs(such as filter out the OBUs
of some temporal ID), we can not do simple copy. So we need to
always copy the input OBUs into a cache.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1979>
2021-01-26 12:22:31 +00:00
He Junyan
a9c8aa4788 av1parse: Improve the logic when to drop the OBU.
When drop some OBU, we need to go on. The current manner will make
the data access out range of the buffer mapping.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1979>
2021-01-26 12:22:31 +00:00
He Junyan
7196abf7a3 av1parse: Fix some issues in the src caps.
1. Add the mono_chrome to identify 4:0:0 chroma-format.
2. Correct the mapping between subsampling_x/y and chroma-format.
   There is no 4:4:0 format definition in AV1. And 4:4:4 should
   let both subsampling_x/y be equal to 0.
3. Send the chroma-format when the color space is not RGB.

Fixes: #1502
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1974>
2021-01-23 10:53:44 +00:00
He Junyan
fe19bc0a2e videoparsers: av1: Add the AV1 parse.
This AV1 parse implements the conversion between alignment of obu,
tu and frame, and the conversion between stream-format of obu-stream
and annexb.

TODO:
1. May need a property of operating_point to filter the OBUs
2. May add a property to disable deep parse.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1614>
2021-01-19 18:38:03 +00:00