On 27/10/2020 13:49, James Almer wrote:
Section 6.10.1 of the AV1 spec states:
It is a requirement of bitstream conformance that the value of tg_end is
greater than or equal to tg_start.
Signed-off-by: James Almer <jamr...@gmail.com>
---
libavcodec/cbs_av1_syntax_template.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/cbs_av1_syntax_template.c
b/libavcodec/cbs_av1_syntax_template.c
index 2df5619279..63b4db7853 100644
--- a/libavcodec/cbs_av1_syntax_template.c
+++ b/libavcodec/cbs_av1_syntax_template.c
@@ -1785,7 +1785,7 @@ static int FUNC(tile_group_obu)(CodedBitstreamContext
*ctx, RWContext *rw,
tile_bits = cbs_av1_tile_log2(1, priv->tile_cols) +
cbs_av1_tile_log2(1, priv->tile_rows);
fb(tile_bits, tg_start);
- fb(tile_bits, tg_end);
+ fc(tile_bits, tg_end, current->tg_start, MAX_UINT_BITS(tile_bits));
}
CHECK(FUNC(byte_alignment)(ctx, rw));
This looks good.
I think the upper bound on tg_end can be num_tiles - 1 rather than accepting
any value of tile_bits. Can we sensibly bound tg_start as well?
Thanks,
- Mark
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