... for interlaced streams. The short_ref[] and long_ref[] arrays may
contain up to 32 fields but VA ReferenceFrames[] array expects up to
16 reference frames, thus including both fields.
Fix decoding of interlaced streams when adaptive_ref_pic_marking_mode_flag
is equal to 1, i.e. when memory management control operations are used. In
particular, when field_pic_flag is set to 0, the new reference flags shall
be applied to both fields.
Decoded frames are only output when they are complete, i.e. when both
fields are decoded. This also means that the "interlaced" caps is not
propagated to vaapipostproc or vaapisink elements. Another limitation
is that interlaced bitstreams with MMCO are unlikely to work.
Split remove_reference_at() into a function that actually removes the
specified entry from the short-term or long-term reference picture array,
and a function that sets reference flags to the desired value, possibly
zero. The latters marks the picture as "unused for reference".
Fix gst_vaapi_picture_new_field() to preserve the original picture type.
e.g. gst_vaapi_picture_new_field() with a GstVaapiPictureH264 argument
shall generate a GstVaapiPictureH264 object.
Introduce new `structure' field to the H.264 specific picture structure
so that to simplify the reference picture marking process. That local
picture structure is derived from the original picture structure, as
defined by the syntax elements field_pic_flag and bottom_field_flag.
Move DPB flush up if the current picture to decode is an IDR. Besides,
don't bother to check for IDR pictures in dpb_add() function since an
explicit DPB flush was already performed in this case.
... to build the short_ref[] and long_ref[] lists from the DPB, instead
of maintaining them separately. This avoids refs/unrefs while making it
possible to generate the list based on the actual picture structure.
This also ensures that the list of generated ReferenceFrames[] actually
matches what reference frames are available in the DPB. i.e. short_ref[]
and long_ref[] entries are implied from the DPB, so there is no risk of
having "dangling" references.
Use the POC member available in the GstVaapiPicture base class and
get rid of the dependency on the local VAPictureH264 TopFieldOrderCnt
and BottomFieldOrderCnt. Rather, use a simple field_poc[] array
initialized to INT_MAX, so that to simplify picture POC calculation
for non frame pictures.
Further get rid of GstVaapiPictureH264-local VAPictureH264.flags for
reference bits, thus simplifying the reference picture marking process
to only track a single set of reference flags. Also introduce a new
long_term_frame_idx member.
Add vaapi_fill_picture() helper function to convert GstVaapiPictureH264
to VAPictureH264 structure. This is preparatory work to get rid of the
local VAPictureH264 member in GstVaapiPictureH264.
Delay ensure_context() until we actually need a VA context for allocating
new VA surfaces, and then GstVaapiPictures, but also when a real activation
of a new picture parameter set occurs, thus also implying an activation
of the related sequence parameter set.
The most important thing was to drop the global pps and sps pointers since
they may not have matched the currently activated picture parameter or
sequence parameter sets at the specified decode point.
Anoter positive side-effect is that this cleans up all occurrences of
decode_current_picture() to only keep those useful in decode_picture(),
before a new picture is allocated, or in decode_sequence_end() when
an end-of-stream or end-of-sequence condition occurred.
... aka fix regression from efaab79. In particular, ScalingList8x8[]
array was partially copied to the VAIQMatrixBufferH264. While we are
at it, also improve bounds checking and avoid copying 8x8 scaling
lists if transform_8x8_mode_flag is set to 0.
Don't copy scaling lists twice to an intermediate state. Rather, directly
use the scaling lists from GstH264PPS since they would match those provided
by SPS header, if necessary. i.e. if PPS-specific scaling lists are not
available in the bitstream.
Remove exit_picture() and exit_picture_poc() since PicOrderCnt(CurrPic)
is now updated accordingly to the standard. Besides, MMCO = 5 specific
operations are moved up to exec_ref_pic_marking_adaptive_mmco_5().
Fix adaptive memory control decoded reference picture marking process
implementation for operations 2 to 6, thus also fixing support for
long-term reference pictures.
This change only splits each individual MMCO handler into several functions
dedicated for each operation. This is needed to perform further work later
on.
Allow build with strict DPB ordering mode whereby evicted entries
are replaced by the next entries, in order instead of optimizing
it away with the last entry in the DPB.
This is only useful for debugging purpose, against a reference SW
decoder for example.
GstH264SliceHdr.n_emulation_prevention_bytes is bound to exist now that
a newer version of codecparsers/ are used if the system provided one is
now recent enough to have those required extensions.
Use newer sources from the codecparsers/ submodule for
- GstH264SliceHdr.n_emulation_prevention_bytes: EPBs;
- GstH264VUIParams.{par_n,par_d}: pixel-aspect-ratio.
Propagate pixel-aspect-ratio determined by the GStreamer codecparser
from the sequence headers.
Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Split decode_buffer() into the core infrastructure that determines
the NAL units contained in the adapter and the actual function that
decodes the NAL unit.
Split decode_buffer() into the core infrastructure that determines
the packets contained in the adapter and the actual function that
decodes the packet data.
Fix memory leakage of empty packets, i.e. packets that only contain
the start code prefix. In particular, free empty user-data packets.
Besides, the codec parser will already fail gracefully if the packet
to parse does not have the minimum required size. So, we can also
completely drop the block of code that used to handle packets of size 4
(including the start code).
Fix return value when the second scan for start code fails. This means
there is not enough data to determine the full extents of the current
packet and the function shall return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA
in this case, instead of GST_VAAPI_DECODER_STATUS_SUCCESS.
Improve the semantics for gst_vaapi_decoder_put_buffer() when an empty
buffer is passed on. An empty buffer is a buffer with a NULL data pointer
or with a size equals to zero. In this case, that buffer is simply
skipped and the function returns TRUE. A NULL buffer argument still
marks the end-of-stream.
Rather than always making the surface fullscreen instead implement the
set_fullscreen vfunc on GstVaapiWindow and then set the shell surface
fullscreen on not depending on that.
Reviewed-by: Joe Konno <joe.konno@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Mesa recently updated the <GL/glext.h> header version to Khronos version 85.
This caused the PFNGLMULTITEXCOORD2FPROC definition to be moved out of the
GL_VERSION_1_3_DEPRECATED block. However, since <GL/gl.h> also defines
GL_VERSION_1_3 to 1, the definitions in <GL/glext.h> are then not enabled,
thus leaving PFNGLMULTITEXCOORD2FPROC undefined as well.
Provide a PFNGLMULTITEXCOORD2FPROC replacement as an interim solution for
newer versions of the <GL/glext.h> header.
Maintaining the sub-buffer is rather suboptimal especially since we
were also maintaining a GstAdapter. Now, we only use the GstAdapter
thus requiring minor extra parsing when receiving avcC buffers.
This allows the compositor to optimize redraws and cull away changes
obscured by the video surface.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Reset, i.e. destroy then create, the decoder in _setcaps() handler only
if the underlying codec type actually changed. This makes it possible
to be more tolerant with certain MPEG-2 streams that get parsed to
form caps that are compatible with the previous state but minor changes
to "codec-data".
Make it possible to specify the maximum number of references to use within
a single VA context. This helps reducing GPU memory allocations to the useful
number of references to be used.
Forward declaring enums is not allowed by the C standard and aborts
compilation if the header file is included in a C++ project.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Some VA drivers (e.g. EMGD) can have completely random values for initial
display attributes. So, try to improve the discovery process to check the
initial display attribute values actually fall within valid bounds. If not,
try to reset those to some sensible values like the default value reported
through vaQueryDisplayAttributes().
Use g_object_class_install_properties() to install GstVaapiDisplay properties.
It is useful to maintain properties as GParamSpec so that to be able to raise
"notify" signals by id instead of by name in the future.
A rendering mode can be "overlay" or "texture"'ed blit.
The former mode implies that a VA surface used for rendering can't be
re-used right away for decoding, so the sink shall make provisions to
retain the associated surface proxy until the next surface is to be
displayed.
The latter mode implies that the VA surface is implicitly copied to an
intermediate backing store, or back buffer of a frame buffer, so the
associated surface proxy can be disposed right away.
The VA display attributes are mapped to properties so that to maintain the
GStreamer terminology. Properties are to be identified by name, but internal
functions are available to lookup the property by the actual VA display
attribute type.
decode_current_picture() was converted to return a gboolean instead
of a GstVaapiDecoderStatus, so we were not getting out of the decode
loop as expected, or could cause an error instead.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Integrate the start code prefix in the slice data buffer that is submitted
to the hardware. VA-API specifies that slice_data_offset is the offset to
the first byte of slice data. And, for MPEG-2, slice() data begins with
the slice_start_code. Some VA driver implementations (EMGD) expect this.
Use g_object_notify_by_pspec() instead of g_object_notify() so that to
avoid a property name lookup. i.e. this makes notifications faster to
the `vaapidecode' element.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Two elements in the luminance quantization table were wrong. So,
gst_jpeg_get_default_quantization_tables() now reconstructs tables
in zig-zag order from the standard ones (Tables K.1 and K.2).
... instead of having them pre-calculated. This saves around 1.5 KB
of data in the DSO but requires gst_jpeg_get_default_huffman_tables()
to do more work. Though, the client application may have to call that
function at most once, only.
Move display types from gstvaapipluginutil.* to gstvaapidisplay.* so that
we could simplify characterization of a GstVaapiDisplay. Also rename "auto"
type to "any", and add a "display-type" attribute.
This improves display name comparisons by always allocating a valid display
name. This also helps to disambiguate lookups by name in the global display
cache, should a new backend be implemented.
The vdeo buffer creation routines shall actually be internal to gstreamer-vaapi
plugin elements. So deprecate any explicit creation routines that are not the
new *_typed_new*() variants.
Introduce new typed constructors internal to gstreamer-vaapi plugin elements.
This avoids duplication of code, and makes it possible to further implement
generic video buffer creation routines that automatically map to base or GLX
variants.
If GLX window was created from a foreign Display, then that same Display shall
be used for subsequent glXMakeCurrent(). This means that gl_create_context()
will now use the same Display that the parent, if available.
This fixes cluttersink with the Intel GenX VA driver.
