In order to flush the pending pictures, a new internal encoder vmethod
is used: get_pending_reordered()
This method follows an iterator pattern which will return the next
picture to encode and push.
The base encoder will call this function in a loop when flush() is called.
For now, only H.264 and H.265 encoders implement this flushing mechanism.
Low delay B frame provide the function of transforming
P frame into low delay B frame which frame type is B, but
only reference predictive frames. This can be used when P
frame unsupported. Especially for P and B both unsupported,
in this case, I and low delay B frame can be encoded in a
stream.
https://bugzilla.gnome.org/show_bug.cgi?id=796984
The specification says,
"log2_max_pic_order_cnt_lsb_minus4 shall be in the range of 0 to 12, inclusive."
This patch changes the upper limit from 6 to 12.
https://bugzilla.gnome.org/show_bug.cgi?id=796179
pic_width_in_luma_samples/pic_height_in_luma_samples can be 16-bit rounded
instead of 32-bit.
In addition, codedbuf_size must be calculated according to this change.
https://bugzilla.gnome.org/show_bug.cgi?id=753229
Check input buffers for ROI metas and pass them to VA. Also added a
new "default-roi-delta-qp" property in order to tell the encoder what
delta QP should be applied to ROI by default.
Enabled it for H264 and H265 encoders.
https://bugzilla.gnome.org/show_bug.cgi?id=768248
Increased max values of periodic key frame for h26x codecs.
This allow more fine tunning of encoder that in certian scenario
want higher periodic key frame.
For example: it doesn't want a key frame each 10 seconds but
each 120 seconds.
https://bugzilla.gnome.org/show_bug.cgi?id=786320
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
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 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
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:
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
Instead of recalculating the miscellaneous buffer parameters for
every buffer, it is only done once, when the encoder is configured.
And for every buffer, the same structures are just copied.
https://bugzilla.gnome.org/show_bug.cgi?id=783449
This is patch pretends to decouple the assignation of the values
in the parameter structures and the VA buffer's parameters setting.
It may lead to some issues since HRD, framerate or controlrate may
not be handled by the specific encoder, but they are set in
the VA buffer's parameters.
I leave as it because this patch is just a transitional patch.
https://bugzilla.gnome.org/show_bug.cgi?id=783449
Move the Hypothetical Reference Decoder (HRD) parameter, from
ensure_misc_params() to ensure_control_rate_params(), since it
only shall be defined when the control rate is either VBR or CBR.
https://bugzilla.gnome.org/show_bug.cgi?id=783449
Right now, H264 and HEVC can set as a property the number of slices to
process. But each driver can set a maximum number of slices, depending
on the supported profile & entry point.
This patch verifies the current num_slices to process against the maximum
permitted by the driver and the media size.
https://bugzilla.gnome.org/show_bug.cgi?id=780955
This patch adds the handling of VAEncMiscParameterTypeQualityLevel,
in gstreamer-vaapi encoders:
The encoding quality could be set through this structure, if the
implementation supports multiple quality levels. The quality level set
through this structure is persistent over the entire coded sequence, or
until a new structure is being sent. The quality level range can be queried
through the VAConfigAttribEncQualityRange attribute. A lower value means
higher quality, and a value of 1 represents the highest quality. The quality
level setting is used as a trade-off between quality and speed/power
consumption, with higher quality corresponds to lower speed and higher power
consumption.
The quality level is set by the element's parameter "quality-level" with a
hard-coded range of 1 to 8.
Later, when the encoder is configured in run time, just before start
processing, the quality level is scaled to the codec range. If
VAConfigAttribEncQualityRange is not available in the used VA backend, then
the quality level is set to zero, which means "disabled".
All the available codecs now process this parameter if it is available.
https://bugzilla.gnome.org/show_bug.cgi?id=778733
Signed-off-by: Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
If the profile is main-10 the bit_depth_luma_minus8, in the sequence
parameter buffer, shall be the color format bit depth minus 8, 10-8
which is 2. Also for bit_depth_chroma_minus8.
This patch gets the negotiated sink caps format and queries its
luma's depth and uses that value to fill the mentioned parameters.
https://bugzilla.gnome.org/show_bug.cgi?id=771291
Implements gst_vaapi_utils_h26x_write_nal_unit(), which writes NAL
unit length and data to a bitwriter.
Note that this helper function applies EPB (Emulation Prevention
Bytes), since otherwise produced codec_data might be broken when
decoder/parser considering EPB, starts parsing.
See sections 7.3 and 7.4 of the H264 and H264 specifications, which
describes the emulation_prevention_three_byte.
https://bugzilla.gnome.org/show_bug.cgi?id=778750
Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>
Since there is duplicated code in h264/265 encoder, we could
refactor it to avoid duplicated code.
https://bugzilla.gnome.org/show_bug.cgi?id=778750
Signed-off-by: Víctor Manuel Jáquez Leal <victorx.jaquez@intel.com>
Validate that fps numerator is non-zero so it can be used to calculate
the duration of the B frame.
Also it gst_util_uint64_scale() is used instead of normal arithmetic in
order to aviod overflows, underflows and loss of precision.
https://bugzilla.gnome.org/show_bug.cgi?id=768458
