decoder: Return error if first slice decoded in a frame is dependent slice
Dependent slice copies slice header from a previously decoded slice.
In case of errors, when the first slice is missing and subsequent slice to
be decoded is a dependent slice, it has no valid slice header to copy
from. Ignore such slices.
Bug: 141688974
Test: poc in bug
Change-Id: Idc1bed45ab37aeee4d373deb00e1b465ca84cfeb
(cherry picked from commit 40dbcab01b9a057c7511781f9b9f5031263bf34d)
diff --git a/decoder/ihevcd_parse_slice_header.c b/decoder/ihevcd_parse_slice_header.c
index c161fc4..13372c3 100644
--- a/decoder/ihevcd_parse_slice_header.c
+++ b/decoder/ihevcd_parse_slice_header.c
@@ -325,6 +325,12 @@
{
BITS_PARSE("dependent_slice_flag", value, ps_bitstrm, 1);
+ /* First slice to be decoded in the current picture can't be dependent slice */
+ if (value && 0 == ps_codec->i4_pic_present)
+ {
+ return IHEVCD_IGNORE_SLICE;
+ }
+
/* If dependendent slice, copy slice header from previous slice */
if(value && (ps_codec->s_parse.i4_cur_slice_idx > 0))
{
