Commit graph

129 commits

Author SHA1 Message Date
He Junyan
2db3ce32ef codecs: Fix the H265 poc out of order warning.
We always get a warning such as:
h265decoder gsth265decoder.c:1432:gst_h265_decoder_do_output_picture: \
<vah265dec0> Outputting out of order 255 -> 0, likely a broken stream
in H265 decoder.

The problem is caused because we fail to reset the last_output_poc when
we get IDR and BLA. The incoming IDR and BLA frame already bump all the
frames in the DPB, but we forget to reset the last_output_poc, which
make the POC out of order and generate the warning all the time.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2294>
2021-06-10 12:36:34 +00:00
He Junyan
c442c9bd5e codecs: Integrate H265 DPB full check into need_bump().
The current DPB check of H265 is not very correct. The current frame
is already in the DPB when we check whether the DPB is full.
For example, the DPB max size is 16 and we have 15 ref frames in the
DPB, so the gst_h265_dpb_delete_unused() cleans no one, and then plus
the current frame, the DPB is 16. This causes an error return, but in
fact, the stream is correct.
We now integrate the DPB full check into the need_bump() function.
We add the correct frame into to DPB and then check whether the picture
num is bigger than max_num_pics of DPB(which means there is no room for
the current picture). If true, we bump the DPB immediately.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2291>
2021-06-02 13:10:35 +00:00
Daniel Almeida
82c0005793 codecs: gstvp8decoder: add support for render delay
Some decoding APIs support delayed output for performance reasons.
One example would be to request decoding for multiple frames and
then query for the oldest frame in the output queue.

This also increases throughput for transcoding and improves seek
performance when supported by the underlying backend.

Introduce support in the vp8 base class, so that backends that
support render delays can actually implement it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2150>
2021-05-31 15:48:24 -04:00
Víctor Manuel Jáquez Leal
da27722351 libs: codecs: h264decoder: Assert output_picture virtual method.
For new code it's nice to assert if the derived class implemented the
output_picture virtual method. Otherwise a segmentation fault
occurs. All other decoders assert this method.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2228>
2021-05-07 20:20:59 +00:00
Daniel Almeida
4900e3583a codecs: gstvp9statefulparser: do not carry over segmentation flags
Do not carry over segmentation flags from previous frames. The spec
says in 7.2.10 that the feature data carry over from previous frames
if not updated, but the flags do not.

Consider what would happen if a flag B is to depend on a flag A, and
B carries over as set from another frame. Further consider that A is
now not set in this particular frame. This leads to the invalid state
in which flag B is set but flag A isn't.

This might cause the bitstream to be rejected by accelerators down
the line.

Fix it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2203>
2021-04-30 16:49:28 +00:00
Seungha Yang
fee725f3cc codecs: vp9decoder: Update docs
* Remove "FIXME 1.20": All the bits are addressed already by using
  vp9parse element
* Fix copy & paste errors: Some comments were copied from h264decoder
  blindly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2151>
2021-04-09 12:13:24 +00:00
Seungha Yang
f7a341a1f0 codecs: vp9decoder: Make duplicate_picture() vfunc optional
The default implementation was required when superframe parsing
was handled by vp9decoder. For instance, if a superframe consists
of multiple frames with show_existing_frame header, it was vague
that which GstVp9Picture should consume GstVideoCodecFrame.

After 1.18 release, we introduced vp9parse element and
superframe should be handled by upstream vp9parse elemenet now.
So, we don't need to care about the superframe at vp9decoder class
level anymore. Simply, a frame corresponding to show_existing_frame
can be dropped if subclass doesn't implement duplicate_picture().

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2151>
2021-04-09 12:13:24 +00:00
Seungha Yang
50e116c4a7 codecs: vp9decoder: Allow decoding start with intra-only frame
As per spec "7.2 Uncompressed header semantics" and
"8.2 Frame order constraints", decoding can start with intra-only
frame. This commit is for fixing vp90-2-16-intra-only.webm
bitstream test failure.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2112>
2021-04-07 19:32:29 +00:00
Seungha Yang
6eb9856f59 codecs: vp9decoder: Pass GstVideoCodecFrame to duplicate_picture()
... and fix picture duplication logic for vavp9dec

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2112>
2021-04-07 19:32:29 +00:00
Seungha Yang
1f769839c0 codecs: vp9decoder: Port to GstVp9StatefulParser
Use newly implemented VP9 parser. Since new GstVp9FrameHeader
struct holds all the information of the stream, baseclass will not
pass parser object to new_sequence() method anymore.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2112>
2021-04-07 19:32:29 +00:00
Seungha Yang
c36190cbda codecparsers: Reimplement VP9 parser
Existing VP9 parser implementation doesn't provide information
required by other stateless decoding APIs (i.e., DXVA and NVDEC),
specifically loop filter and segmentation parameters might not exist
current frame. So parser needs to fill the information by using previously
parsed information.
We can update the gstvp9parser implementation so that it can provide
all information required by stateless decoding APIs with a huge API break,
or adding more ugly struct in it.
Instead doing as such, this commit introduce a new VP9 parser implementation.

What is different from existing one?
* All variables will follow the specification as much as possible:
  VP9 Bitstream & Decoding Process Specification - v0.6 31st March 2016
* Parser will fill all the required information for decoding frame
  to GstVp9FrameHeader struct. In case of old VP9 parser,
  user needs to read additional data from parser's member variables.
* GstVp9StatefulParser object struct is completely completely opaque

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2112>
2021-04-07 19:32:29 +00:00
Seungha Yang
771326a0fb codecs: vp9decoder: Don't check codec change with show_existing_frame
Show existing frame will zero frame_type value but it doesn't mean
it's keyframe.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2112>
2021-04-07 19:32:29 +00:00
Seungha Yang
76e5e479be codecs: vp9decoder: Fix to output frame when show_existing_frame flag is set
When show_existing_frame flag is set, show_frame flag is zero
but we should output previously decoded frame as specified in frame header.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2114>
2021-03-26 14:50:18 +00:00
He Junyan
315b101394 codecs: AV1decoder: Add the AV1 decoder base class.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1636>
2021-02-23 13:50:51 +08:00
He Junyan
636a77a83f codecs: mpeg2decoder: Move frame_unref to handle_frame.
In the current code, we call frame_unref only when the frame is
outputted. This is OK for normal playback, but when seek happens,
the frames stored in DPB is not outputted and causes some memory
leak.
The correct way is that we should call frame_unref every time we
finish the handle_frame(), which is also the behaviour of H264/H265
decoder.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2014>
2021-02-11 16:18:29 +08:00
Seungha Yang
f49f039ff2 codecs: h265decoder: Add support for interlaced stream
* Invoke GstH265DecoderClass::new_sequence() method per interlaced
  stream status update so that subclass can update caps.
* Parse picture timing SEI and set buffer flags on GstH265Picture
  object. Subclass can refer to it like that of our h264decoder
  implementation.
* Remove pointless GstH265PictureField enum

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2008>
2021-02-09 16:19:41 +00:00
Seungha Yang
86e312c1b1 codecs: h264decoder: Add support for output delay
Some decoding APIs support delayed output or a command for decoding
a frame doesn't need to be sequential to corresponding command for
getting decoded frame. For instance, subclass might be able to
request decoding for multiple frames and then get for one (oldest)
decoded frame or so.
If aforementioned case is supported by specific decoding API,
delayed output might show better throughput performance.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1925>
2021-01-29 16:22:28 +00:00
He Junyan
057fedd178 codecs: mpeg2decoder: Fix a typo in header file's comment.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1963>
2021-01-20 00:57:34 +08:00
Seungha Yang
ae7c20a6ed codecs: h264picture: Count only complete complementary field pair for dpb fullness decision
Our DPB implementation was designed as such that allowing
temporary DPB overflow in the middle of field picture decoding
and incomplete field pair should not trigger DPB bumping.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1947>
2021-01-10 23:27:27 +09:00
Seungha Yang
e14bbd7f5c codecs: h264decoder: Add support for field-pair input frame
In case that upstream pushed buffer as a frame unit, not picture
unit for interlaced stream, baseclass should be able to detect
AU boundary (i.e., complementary field pair).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1947>
2021-01-10 23:11:01 +09:00
Seungha Yang
6366435e19 codecs: h264decoder: Remove unused private variables
... and reset() method to clear internal status at one place

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1947>
2021-01-10 22:02:54 +09:00
Víctor Manuel Jáquez Leal
a926511df4 codecs: mpeg2decoder: decode only if B and not closed gop
Mark as decode only if picture type is B, without previous picture in DBP and
closed_gop is 0 as might be understood in "6.3.8 Group of pictures header".

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1939>
2021-01-06 16:47:42 +01:00
Víctor Manuel Jáquez Leal
ec15caff93 codecs: mpeg2decoder: rename variables
Since prev_picture and next_picture are plain pointers, not pointer to pointers,
it's misleading to name them with _ptr suffix.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1939>
2021-01-06 16:47:42 +01:00
He Junyan
41d2edc964 codecs: mpeg2decoder: Creating the field based on its arriving time.
Spec says:
In a frame picture top_field_first being set to ‘1’ indicates that the
top field of the reconstructed frame is the first field output by the
decoding process. top_field_first being set to ‘0’ indicates that the
bottom field of the reconstructed frame is the first field output by
decoding process.

Here, the "output" should be interpreted just as the output order, not
including the decoding order. The field should be decoded as the order
they comes in the stream. Namely, no matter top_field_first is 0 or 1,
the first coming field is the first one to be decoded.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1929>
2021-01-04 13:09:01 +00:00
He Junyan
459abad096 codecs: Add buffer_flags for mpeg2 picture.
We need to store the buffer flags such as GST_VIDEO_BUFFER_FLAG_INTERLACED
and GST_VIDEO_BUFFER_FLAG_TFF for interlaced video. Without these flags,
the VPP and display elements can not apply filter correctly.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1929>
2021-01-04 13:09:01 +00:00
He Junyan
339a816c81 codecs: Reset the quant matrices for each sequence in mpeg2 decoder.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1929>
2021-01-04 13:09:01 +00:00
He Junyan
29be6ff83a codecs: Fix a typo in mpeg2 stateless decoder base class.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1915>
2020-12-28 17:13:22 +08:00
Víctor Manuel Jáquez Leal
060c54ab07 codecs: mpeg2decoder: fix documentation
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1798>
2020-12-28 13:15:50 +08:00
Víctor Manuel Jáquez Leal
5243048cb0 codecs: mpeg2decoder: simplify macros
For constructors, instead of casting to pointers, cast to the structures.

For compare, use inlined functions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1798>
2020-12-28 13:14:51 +08:00
He Junyan
0e161dd363 codecs: Add mpeg2 stateless decoder base class.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1798>
2020-12-28 13:05:29 +08:00
Víctor Manuel Jáquez Leal
1a5862dd39 codecs: h264decoder: fix memory leak
gst_h264_dbp_get_picture_all() returns a full transfer of the GArray, which
needs be unrefed. But it is not unrefed in
gst_h264_decoder_find_first_field_picture() leaking it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1827>
2020-11-23 15:23:35 +01:00
Seungha Yang
64ea751cd2 codecs: h264decoder: Add support for field ref picture list modification
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1812>
2020-11-17 19:57:30 +09:00
Seungha Yang
88ebe8031a codecs: h264decoder: Add more option arguments for reference picture getter
In case that "pic_order_cnt_type" is equal to zero, ref picture
list for B slice should not include non-existing picture
as per spec 8.2.4.2.3. And, the second field is not needed
for the process of frame picture reference list construction
since it needs to be frame unit, not field picture in that case.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1812>
2020-11-17 19:44:04 +09:00
Seungha Yang
e1adc572a7 codecs: h264decoder: Split gap picture as well if needed
field pair pictures might be required for reference list
depending on context.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1812>
2020-11-17 19:08:47 +09:00
Nicolas Dufresne
4ee6167616 h264dec: Fix POC calculation for type 0
This is mostly for future use as it only fixes the caclulation for interlaced
cases, the case of frame seemed correct already.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1812>
2020-11-17 19:00:39 +09:00
Seungha Yang
11509fded1 codecs: h264decoder: Don't try to construct RefPicList0 and RefPicList1 if not required
We were trying to construct reference picture list even for
I slice before this commit. Reference list is required only for
P, SP and B slices. Also, if all existing reference pictures
are gap pictures, we don't need to construct lists.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1812>
2020-11-17 18:29:54 +09:00
Seungha Yang
fec686145e codecs: h264decoder: Fix MMCO type 1 for interlaced stream
If field_pic_flag of current picture is equal to zero,
both field of reference field pair should be marked as
"unused for reference"

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1810>
2020-11-16 14:25:36 +00:00
Seungha Yang
b83d452cc2 codecs: h264decoder: Fix MMCO type 3 for interlaced stream
Depending on short-ref picture corresponding to picNumX value,
there's a condition that only one field should be updated to
be non-reference picture.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1810>
2020-11-16 14:25:36 +00:00
Seungha Yang
caa5eb65d1 codecs: h264decoder: Split frame picture into field pictures if needed
In case of interlaced stream, frame pictures need to be splitted
into field for reference marking process.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1810>
2020-11-16 14:25:36 +00:00
Seungha Yang
7b42b1f9fb codecs: h264decoder: Add util macro for frame/field picture identification
Add a macro to check whether given GstH264Picture is for frame or field
decoding.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1810>
2020-11-16 14:25:36 +00:00
Seungha Yang
f9af93d841 codecs: h264decoder: Don't give up to decode due to missing reference picture
Missing reference picture is very common thing for broken/malformed stream.
Decoder should be able to keep decoding if it's not a very critical error.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1809>
2020-11-14 16:17:18 +00:00
Seungha Yang
0b9f975b36 codecs: h264decoder: Add support for interlaced stream
Initial support for interlaced stream. Subclass should implement
new_field_picture() vfunc. Otherwise, baseclass will assume that
subclass doesn't support interlaced stream.

Restrictions:
* Reference picture modification process for interlaced stream
  is not implemented yet
* PAFF (Picture Adaptive Frame Field) is not properly implemented.
* Field display ordering (e.g., top-field-first) decision should
  be enhanced via picture timing SEI parsing
* Gap in field picture should be handled

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:43 +00:00
Seungha Yang
52a8864076 codecs: h264decoder: Rename DPB methods
Clarify wheter it's for picture(field) or frame in order to
support interlaced stream, because DPB size is frame unit, not picture
in case of interlaced stream.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:42 +00:00
Seungha Yang
9bd6b5f0b4 codecs: h264decoder: Remove interlaced stream related constraints
... and add new_field_picture() vfunc so that ensure interlaced
decoding support by subclass.
The method will be used later with interlaced stream support.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:42 +00:00
Seungha Yang
5585314b56 codecs: h264decoder: Move to inline GstH264DecoderClass documentation
Don't duplicate documentation for class vfunc. Hotdoc doesn't seem
to be happy with duplicated documentation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:42 +00:00
Seungha Yang
7a53d7a4aa codecs: h264decoder: Store reference picture type using enum value
Managing reference picture type by using two variables
(ref and long_term) seems to be redundant and that can be
represented by using a single enum value.

This is to sync this implementation with gstreamer-vaapi so that
make comparison between this and gstreamer-vaapi easier and also
in order to minimize the change required for subclass to be able
to support interlaced.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:42 +00:00
Seungha Yang
157210eb19 codecs: h264decoder: Minor documentation fix
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1534>
2020-11-13 15:25:42 +00:00
Seungha Yang
227456d240 codecs: h264decoder: Remove DPB size related spammy debug message
It's not informative at all if SPS wasn't updated. Also we are printing
DPB size related debug message in another place already.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1806>
2020-11-13 14:50:09 +00:00
Seungha Yang
6a6f8c967c codecs: h264decoder: Don't fill gap picture if it's not allowed
We should fill gap picture only if sps->gaps_in_frame_num_value_allowed_flag
is set.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1801>
2020-11-12 14:38:56 +00:00
He Junyan
04472c5adb codecs: vp8decoder: Fix two typo of struct name.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1797>
2020-11-11 18:52:37 +00:00