Drops non-base NALs when the base-only property is set to TRUE.
This modifies the behavior for MVC streams with base-only too: All the
non-base units are dropped before they are decoded instead of dropping
the non-base frames.
The relevant part from the H264 spec is:
> Decoders that conform to one or more of the profiles specified in
Annex A rather than the profiles specified in Annexes G or H shall
ignore (remove from the bitstream and discard) the contents of all NAL
units with nal_unit_type equal to 14, 15, or 20.
To eliminate side effects from the offending units:
- PPS's with a broken seq_parameter_set_id (referring to dropped subset
SPS's) are ignored.
- The NAL parsing is skipped and their flags are set to
GST_VAAPI_DECODER_UNIT_FLAG_SKIP.
- Prefix units are not stored in prev_pi. Otherwise, parse_slice() would
use them even if they are flagged to be skipped. Subset SPS's and slice
extension units are not stored there either.
https://bugzilla.gnome.org/show_bug.cgi?id=732266
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
In VA-API 1.0 the enum VAEncPackedHeaderH264_SEI is deprecated, and
instead VAEncPackedHeaderRawData should be used.
This patch creates a compatibility symbol,
VA_ENC_PACKED_HEADER_H264_SEI, to expose the used enum according the
VA-API version.
https://bugzilla.gnome.org/show_bug.cgi?id=784398
In VA-API 1.0 the union bits in VAEncMiscParameterBufferROI has
renamed one member from roi_value_is_qp_delat to
roi_value_is_qp_delta, which is the correct name.
In order to keep back compatibility a macro has added to access this
union member.
https://bugzilla.gnome.org/show_bug.cgi?id=784398
Coverity scan bug:
An assigned value that is never used may represent unnecessary
computation, an incorrect algorithm, or possibly the need for cleanup
or refactoring.
ip_period is assigned first to be rewritter inmediatly after. The
first assignation is spurious.
Coverity scan:
Logically dead code: The indicated dead code may have performed some
action; that action will never occur.
By using pointer arithmetic is impossible to get NULL.
Coverity scan bug:
Out-of-bounds write. This could cause an immediate crash or incorrect
computations.
Coverity basically found that it is possible to assign more than 4
attribs in the array.
In my opinion this was produced because code pattern used pointer
arithmetic, which is not readable nor maintainable.
This patch refactors config_create() to use an array index rather than
pointer arithmetic. Also a run-time check for index size was added.
Converity scan bug:
If the function returns an error value, the error value may be
mistaken for a normal value.
If g_atomic_pointer_compare_and_exchange() fails because the frame is
not the last one, the function fails. Thus, logging an info message.
Coverity scan bug:
If the function returns an error value, the error value may be
mistaken for a normal value.
Function sscanf returns the number of assignations done. Validate this
return value with the number of expected variables to match.
Coverity scan bug:
Dereference after null check: Either the check against null is
unnecessary, or there may be a null pointer dereference.
Variable klass has been validated as non-NULL several time before in
gst_vaapi_object_new() function, so there is no need to check it
again.
Coverity scan bug:
An assigned value that is never used may represent unnecessary
computation, an incorrect algorithm, or possibly the need for cleanup
or refactoring.
ip_period is assigned first to be rewritter inmediatly after. The
first assignation is spurious.
Coverity scan bug:
The copied code will not have its intended effect.
This is a bug from commit cdaf15b2, where the intention is to
initialize RefPicList1 while setting RefPicList0.
Coverity scan bug:
Unintentional integer overflow. The expression's value may not be what
the programmer intended, because the expression is evaluated using a
narrow (i.e. few bits) integer type.
Cast operator to guint64 before computation to avoid narrowing.
merge with 3c5a6add
Coverity scan bug:
An assigned value that is never used may represent unnecessary
computation, an incorrect algorithm, or possibly the need for cleanup
or refactoring.
In the return value of decode_slice() or
gst_mpeg4_parse_video_packet_header() are not success, thus fail
decode_packet() function.
Coverity scan bug:
Dereference after null check: Either the check against null is
unnecessary, or there may be a null pointer dereference.
While looking for hte lowest poc, according to rest of the code, the
picture in the dbp (decoded picture buffer) might be NULL, thus we
could check for a NULL picture before assigned as found.
Also, split a comma operator because it is considered as a bad
practice because it possible side effects.
Coverity scan bug:
Scalars (for example, integers) are not properly
bounds-checked (sanitized) before being used as array or pointer
indexes, loop boundaries, or function arguments are considered as
tainted.
In this case, num_nals were not checked before used as loop control.
Coverity scan bug:
Dereference after null check: Either the check against null is
unnecessary, or there may be a null pointer dereference.
In the original commit for fill_picture_gaps() (commit 5abd2b90) the
prev_picture could be NULL, that's why the code did a null check. But,
since commit 52adebe7, the previous reference frames are tracked, thus
there is no need to check null anymore.
Using num_ref_frames provided and the result of the Query
VAConfigAttribEncMaxRefFrames, it determines the size of reference list
and perform encoding with multi reference frames as the following:
1\ The num_ref_frames is being considered as the number of
reference picture list0
2\ Encoder adds 1 reference frame more to the reference picture list1
internally if b-frame encoding.
3\ If num_ref_frames is bigger than the number of refrence frames
supported in the driver, it will be lowered.
https://bugzilla.gnome.org/show_bug.cgi?id=783803
Users can provide the number of reference frame by this property.
The value of the property will be considered as the number of
reference picture list0 and will add 1 reference frame more to the
reference picture list1 internally if b-frame encoding.
If the value provided is bigger than the number of refrence frames
supported in the driver, it will be lowered.
https://bugzilla.gnome.org/show_bug.cgi?id=783803
This function will query VAConfigAttribEncMaxRefFrames to get the
maximum number of reference frames supported in the driver.
This will be used for h264/h265 encoding.
https://bugzilla.gnome.org/show_bug.cgi?id=783803
Added a new property "compliance-mode", which default is the normal
strict compliant mode.
The second mode, "restrict-buf-alloc", is to limit the coded buffer
allocation size to improve performance in some specific Intel
platforms (there is asignificant performance improvement in parallel
encodings). Under this new mode, we use the MinCR field in A.3.1 for
pre-calculating the coded-buffer size.
https://bugzilla.gnome.org/show_bug.cgi?id=784590
Push frames downstream as soon as possible instead of waiting until
they are ejected from the DPB.
This patch makes the decoder not comply with the H.264 specification,
but it is required for some video cameras.
https://bugzilla.gnome.org/show_bug.cgi?id=762509
Signed-off-by: Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
If the picture is IDR, also submit a SPS header.
This means when frame number reaches to keyframe-period or an force
key unit event arrives, we insert SPS/PPS again.
https://bugzilla.gnome.org/show_bug.cgi?id=776712
