Frames are encoded as different layers. Frame in a particular
layer will use pictures in lower or same layer as references.
Which means decoder can drop the frames in upper layer but still
decode lower layer frames.
B-frames, except the one in top most layer, are reference frames.
All the base layer frames are I or P.
eg: with 3 temporal layers
T3: B1 B3 B5 B7
T2: B2 B6
T1: I0 P4 P8
T1, T2, T3: Temporal Layers
P1...Pn: P-Frames:
B1...Bn: B-frames:
T1: I0->P4 , P4->P8 etc..
T2: I0--> B2 <-- P4
T3: I0--> B1 <-- B2, B2 --> B3 <-- P4
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
Frames are encoded as different layers. A frame in a particular
layer will use pictures in lower or same layer as references.
Which means decoder can drop the frames in upper layer but still
decode lower layer frames.
eg: with 3 temporal layers
T3: P1 P3 P5 P7
T2: P2 P6
T1: P0 P4 P8
T1, T2, T3: Temporal Layers
P1...pn: P-Frames:
P0->P1 , P0->P2, P2->P3, P0->P4......repeat
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
The frame_num generation was not correctly implemented.
According to h264 spec, frame_num should get incremented
for each frame if previous frame is a referece frame.
For eg: IPBPB sequece should have the frame numbers 0,1,2,2,3
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
Adds new property "prediction-type" to select different reference
picture selection modes like hierarchical-p, hierarchical-b etc.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
Adds some basic building blocks to ease the implementation
of hierarchical prediction modes.
-- add an utility method to find temporal level of each frame
-- define max_ref_frame count based on temporal level count
-- add temporal_level_div[] for finding temporal level each frame
to be encoded.
-- find ip_period based on temporal level count
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
Adds new property "temporal-levels" to select the number of
temporal levels to be included in the encoded stream.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
We can have p-frame as non-ref and also b-frame as ref
which are not supported yet. Reference flag
is the first machinery needed for more advanced
reference picture selection modes.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=788918
Adds a new function that changes the internal EGL display to the
current one (eglGetCurrentDisplay()) and sets the current context
too (eglGetCurrentContext()).
This new function is called by gst_vaapi_texture_egl_create() updating
the GstVaapiDisplayEGL with the current EGL display.
https://bugzilla.gnome.org/show_bug.cgi?id=773453
It is required to use the context of the calling thread when wrapping
a foreign texture. According the documentation of
GstVideoGLTextureUploadMeta:
"The caller of gst_video_gl_texture_upload_meta_upload() must
have OpenGL set up and call this from a thread where it is valid
to upload something to an OpenGL texture."
This patch updates the EGL display and context in GstVaapiDisplay
instance to the one used by te renderer that uploads the texture.
Original-patch-by: Daniel van Vugt <daniel.van.vugt@canonical.com>
https://bugzilla.gnome.org/show_bug.cgi?id=773453
Instead of silently fail to export the image if there is not available
the EGL_MESA_drm_image, log an error message. Also a code refactoring
was done.
https://bugzilla.gnome.org/show_bug.cgi?id=773453
In case of streaming, controlling bitrate dynamically for encoder might be
important to manage quality of the streaming.
This patch is to support such a scenario.
https://bugzilla.gnome.org/show_bug.cgi?id=786321
gstreamer-vaapi initializes the display by trial-and-error, thus
logging an error message if the display initialisation fails the user
may be weary of the error message in the screen, if using VA-API 1.0
This commit set the VA error log handler to GStreamer warning level
while calling vaInitialize() and set it to error after that.
https://bugzilla.gnome.org/show_bug.cgi?id=783169
GstVaapiDisplayEGL is a wrapper of another GstVaapiDisplay, either X11
or Wayland. Nonetheless it created another vaDisplay for it, instead
of using the wrapped one.
This patch enables the reuse of the wrapped vaDisplay avoiding
instantiating two.
https://bugzilla.gnome.org/show_bug.cgi?id=782212
This is a difference between the GObject API and the GstVaapi one: the
GValue passed to get a property value, in GObject has to be
initialized with g_value_init(), but in GstVaapi is has not.
In order to overcome this mismatch, this patch call g_value_init()
internally only in the passed one is not already initialized.
https://bugzilla.gnome.org/show_bug.cgi?id=788058
Shuffled some code to avoid to find the properties descriptor in the
array twice, adding the internal functions _set_property() and
_get_property().
https://bugzilla.gnome.org/show_bug.cgi?id=788058
Fixes regression introduced by commit 2eb2b26a.
There is a use case when the decoder set the src caps and immediatly
tries to process the media codec_data, this happens before decoder is
even opened, thus priv->parser is not instantiated yet.
https://bugzilla.gnome.org/show_bug.cgi?id=787818
Instead of handling the macroblock bitrate control as a integer, this
patch changes it as a enum, which is more self documented in the
GStreamer elements.
https://bugzilla.gnome.org/show_bug.cgi?id=787855
This patch fixes a regression introduced in commit 148f867c, since the
props variable is set to object's member variable
encoder->properties. And it is set in the instance initialization,
thus it will not be leaked.
https://bugzilla.gnome.org/show_bug.cgi?id=787733
Creates 2 properties, qp-ip and qp-ib for setting different QP for P/B
frames
and set slice_qp_delta for each frame according to the value provided.
https://bugzilla.gnome.org/show_bug.cgi?id=785923
Creates 2 properties, qp-ip and qp-ib for setting different QP for P/B
frames
and set slice_qp_delta for each frame according to the value provided.
In addition, remove the limitation of (<= 4) when setting
slice_qp_delta.
https://bugzilla.gnome.org/show_bug.cgi?id=785923
Creates new variable for QP for I frame and keep it at configuration and
use this for pic_init_qp and slice_qp_delta setting.
Since changing min qp doesn't make sense, keep min qp as is.
https://bugzilla.gnome.org/show_bug.cgi?id=785923
This is doing the same as h264 encoder as the following:
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.
Also this patch includes:
- Set num_negative_pics and num_positive_pics according to the number of
refs.
- Set delta_poc according to the number of refs.
- Increase max_dec_pic_buffering according to the number of refs
- Change max_num_reorder_pics according to num of bframes
https://bugzilla.gnome.org/show_bug.cgi?id=783804
Users can provide the number of reference frame by this property,
which is exaclty same as h264.
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.
The maximum value is aligned to the value of the driver supported now.
https://bugzilla.gnome.org/show_bug.cgi?id=783804
Follows the specification as below:
7.4.7.1 in Rec. ITU-T H.265 v4 (12/2016)
num_ref_idx_active_override_flag equal to 1 specifies that the syntax
element num_ref_idx_l0_active_minus1 is present for P and B slices and
that the syntax element num_ref_idx_l1_active_minus1 is present for B
slices.
num_ref_idx_active_override_flag equal to 0 specifies that the syntax
elements num_ref_idx_l0_active_minus1 and num_ref_idx_l1_active_minus1
are not present.
https://bugzilla.gnome.org/show_bug.cgi?id=783804
Remove FIXME code, which makes previous assignation spurious.
This also means to make idr_period equal to keyframe period,
which is same as h264 encoder.
https://bugzilla.gnome.org/show_bug.cgi?id=783804
Adding FEI encoder to core lib.
The code is splitted into three session:
1: gstvaapiencoder_h264_fei.{h,c}
This is the replica of gstvaapiencoder_h264.{c,h} but with FEI.
All the modes ENC, PAK and ENC_PAK are running based
the code in these files.
2: gstvaapifeienc_h264.{h,c}
Abstract implementation intended for ENC (only VME) operation.
3: gstvaapifeipak_h264.{h,c}
Abstrct implementation intended for PAK (only the PAK module)
Right now ENC_PAK, ENC and PAK are running based on code
in gstvaapiencoder_h264_fei.{h,c}. The abstract implementations
in gstvaapifeienc_h264.{h,c} and gstvaapifeipak_h264.{h,c} are
needed if user request for ENC+PAK mode operation.
ENC+PAK: Here we need to invoke two sequence of
vaBeginPicture/vaRenderPicutre/vaEndPicture for each frame,
first for the ENC only and the second for PAK only.
Each mode associated with separate context ,but same pool of surfaces are
shared between the modes.
This is more useful once we have custom BRC algorithms.
Other Contributors:
Wang, Yi <yi.a.wang@intel.com>
Leilei <leilei.shang@intel.com>
Zhong, Xiaoxia <xiaoxia.zhong@intel.com>
xiaominc <xiaomin.chen@intel.com>
Li, Jing B <jing.b.li@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=785712https://bugzilla.gnome.org/show_bug.cgi?id=784667
MbCode, MV and Distortion buffers (fei codec objects)
can be treated as output of different fei modes based user request.
For eg: MbCode and MV are the output of ENC only. MbCode, MV and Dist
can be dumped as output in ENC_PAK mode for analysis purpose.
So treating them as a part of CodedBufferProxy too.
Here we avoided Qp, MbControl and MvPredictor codec objects since
there is no practical use case of treating them as "output buffers".
Other contributors:
Zhong, Xiaoxia <xiaoxia.zhong@intel.com>
xiaominc <xiaomin.chen@intel.com>
Leilei <leilei.shang@intel.com>
Li, Jing B <jing.b.li@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=785712https://bugzilla.gnome.org/show_bug.cgi?id=784667
Add fei codec objects to surface proxy since handling the
fei buffers(codec objects here) external to gstvaapisurfaceproxy
will make the code complicated. Especially considering the behavior
of encoder where the input frame order from upstream and output
frame order to the downstream are not sequential.
Other contributors:
Zhong, Xiaoxia <xiaoxia.zhong@intel.com>
xiaominc <xiaomin.chen@intel.com>
Leilei <leilei.shang@intel.com>
Li, Jing B <jing.b.li@intel.com>
https://bugzilla.gnome.org/show_bug.cgi?id=785712https://bugzilla.gnome.org/show_bug.cgi?id=784667
There are 6 new va buffer types, each defined as a specific codec object.
Borrowed the code from gstvaapicodecobject , but made a clear separation
to avoid any possible mess-up. Because unlike the other gstvaaicodecobjects,
feicodecobjects can be shared between elements and also can be accessed
from different thread.
Unlike the other fei codecs object, VAEncMiscParameterTypeFEIFrameControl
object is not shared between elements.So we utilize the already
existing gst_vaapi_enc_misc_param_new(), but still keeping the code
in gstvaapfei_objects_priv.h in order to have a better
code readability.
Fixme:
-- Probably we need _locked_map() and _unlocked_map()
-- Context can be associated with PreEnc(not just Enoder)
once we have the proper support inplace, but for now we don't have
PreEnc support, so should be safe enough to use GstVaapiEncoder.
https://bugzilla.gnome.org/show_bug.cgi?id=785712https://bugzilla.gnome.org/show_bug.cgi?id=784667
