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h265parse: Add special profile case for profile_idc 0.

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This is a work-around to identify some main profile streams having
wrong profile_idc. There are some wrongly encoded main profile streams
which doesn't have any of the profile_idc values mentioned in Annex-A,
instead, general_profile_idc has been set as zero and the
general_profile_compatibility_flag[general_profile_idc] is TRUE.
Assuming them as MAIN profile for now.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2322>
This commit is contained in:
He Junyan 2021-06-27 15:34:28 +08:00 committed by GStreamer Marge Bot
parent 42a861fe59
commit 8ba730a564
1 changed files with 19 additions and 0 deletions
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19
gst/videoparsers/gsth265parse.c
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@ -1982,6 +1982,22 @@ get_compatible_profile_caps (GstH265SPS * sps, GstH265Profile profile)
return caps;
}
static void
fix_invalid_profile (GstH265Parse * h265parse, GstCaps * caps, GstH265SPS * sps)
{
/* HACK: This is a work-around to identify some main profile streams
* having wrong profile_idc. There are some wrongly encoded main profile
* streams which doesn't have any of the profile_idc values mentioned in
* Annex-A. Just assuming them as MAIN profile for now if they meet the
* A.3.2 requirement. */
if (sps->chroma_format_idc == 1 && sps->bit_depth_luma_minus8 == 0 &&
sps->bit_depth_chroma_minus8 == 0 && sps->sps_extension_flag == 0) {
gst_caps_set_simple (caps, "profile", G_TYPE_STRING, "main", NULL);
GST_WARNING_OBJECT (h265parse,
"Wrong profile_idc = 0, setting it as main profile !!");
}
}
/* if downstream didn't support the exact profile indicated in sps header,
* check for the compatible profiles also */
static void
@ -1990,6 +2006,9 @@ ensure_caps_profile (GstH265Parse * h265parse, GstCaps * caps, GstH265SPS * sps,
{
GstCaps *peer_caps, *compat_caps;
if (profile == GST_H265_PROFILE_INVALID)
fix_invalid_profile (h265parse, caps, sps);
peer_caps = gst_pad_get_current_caps (GST_BASE_PARSE_SRC_PAD (h265parse));
if (!peer_caps || !gst_caps_can_intersect (caps, peer_caps)) {
GstCaps *filter_caps = gst_caps_new_empty_simple ("video/x-h265");