On 16/08/2023 08:54, Wang, Fei W wrote:
On Sun, 2023-08-13 at 22:43 +0100, Mark Thompson wrote:
On 10/08/2023 03:54, Wang, Fei W wrote:
On Mon, 2023-08-07 at 22:21 +0100, Mark Thompson wrote:
On 03/08/2023 07:01, fei.w.wang-at-intel....@ffmpeg.org wrote:
From: Fei Wang <fei.w.w...@intel.com>
Signed-off-by: Fei Wang <fei.w.w...@intel.com>
---
Changelog | 1 +
configure | 3 +
doc/encoders.texi | 13 +
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/vaapi_encode.c | 125 +++-
libavcodec/vaapi_encode.h | 12 +
libavcodec/vaapi_encode_av1.c | 1229
+++++++++++++++++++++++++++++++++
libavcodec/version.h | 2 +-
9 files changed, 1368 insertions(+), 19 deletions(-)
create mode 100644 libavcodec/vaapi_encode_av1.c
...
+
+ /** update obu size in bitstream */
+ if (fh_obu->header.obu_has_size_field) {
+ obu_size_len = priv-
attr_ext2.bits.obu_size_bytes_minus1
+ 1;
+ for (i = 0; i < obu_size_len; i++) {
+ byte = obu_size >> (7 * i) & 0x7f;
+ if (i < obu_size_len - 1)
+ byte |= 0x80;
+ put_bits(&pbc_tmp, 8, byte);
+ }
+ flush_put_bits(&pbc_tmp);
+ memmove(pbc_tmp.buf_ptr, pbc_tmp.buf_ptr + (8 -
obu_size_len), obu_size);
+ *data_len -= (8 - obu_size_len) * 8;
+ }
Why is there an incomplete duplicate of the cbs_av1 header
writing
code here?
To record some position/size in bitstream that needed for VAAPI.
Like
qp_index/loopfilter/cdef offset and cdef parameters size in bit.
It's
not reasonable to add the specific parameters into CBS.
How about with <
https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2023-August/313228.html>
;?
How to pass position info out of .trace_write_callback? If define own
write_callback function in vaapi_encode_av1.c, and it can easily get
the positions of each syntax element, but can't pass them back to VAAPI
AV1 encoder. A possible way is according
to CodedBitstreamContext.priv_data, but that will need to add lots of
xxx_offset into CodedBitstreamAV1Context.
Right, it needs a context pointer in the callback because CBS hasn't previously
had that.
See new version.
Thanks,
- Mark
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