Make sure libgstvaapi core decoding library doesn't include un-needed
dependencies. So, move out GstVaapiVideoConverterGLX to plugins instead.
Besides, even if the vaapisink element is not used, we are bound to have
a correctly populated GstSurfaceBuffer from vaapidecode.
Also clean-up the file along the way.
If the raw YUV buffer was created from vaapisink, through the buffer_alloc()
hook, then it will have a valid GstVaapiVideoMeta object attached to it.
However, we previously assumed in that case that it was a "native" VA buffer,
thus not calling into GstVaapiUploader::process().
Use gst_element_class_set_static_metadata() from GStreamer 1.0, which
basically is the same as gst_element_class_set_details_simple() in
GStreamer 0.10 context.
Move GstImplementsInterface and GstVideoContext support functions up
so that to keep a clear separation between the plugin element and its
interface hooks.
Use GstVideoInfo and gst_video_info_from_caps() helper wherever possible.
Also use the newly added gst_vaapi_image_format_from_structure() helper
in GstVaapiUploader::ensure_allowed_caps().
gst_vaapi_video_buffer_new_from_buffer() needs to reference the source
buffer video meta since it would be unreference'd from the get_buffer()
helper function. For other cases, we still use (steal) the newly created
video meta.
Fix ensure_image() to only zero-initialize the first line of each plane.
Properly initializing each plane to their full vertical resolution would
require to actually compute it based on the image format.
In particular, for NV12 images, the UV plane has half vertical resolution
vs. the Y plane. So using the full image height to initialize the UV plane
will obviously lead to a buffer overflow. Likewise for other YUV format.
Since ensure_image() is only a helper function to initialize something,
and not necessarily the whole thing, it is fine to initializ the first
line only. Besides, the target surface is not rendered either.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Decode-only frames may not have a valid surface proxy. So, simply discard
them gracefully, i.e. don't create meta data information. GstVideoDecoder
base class will properly handle this case and won't try to push any buffer
to downstream elements.
Implement GstVideoDecoder::reset() as a destruction of the VA decoder
and the creation of a new VA decoder.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Split GstVideoDecoder::handle_frame() implementation into two functions:
(i) one for decoding the provided GstVideoCodecFrame and (ii) another one
for purging all decoded frames and submit them downstream.
Update plugin elements with the new GstVaapiVideoMeta API.
This also fixes support for subpictures/overlay because GstVideoDecoder
generates a sub-buffer from the GstVaapiVideoBuffer. So, that sub-buffer
is marked as read-only. However, when comes in the textoverlay element
for example, it checks whether the input buffer is writable. Since that
buffer read-only, then a new GstBuffer is created. Since gst_buffer_copy()
does not preserve the parent field, the generated buffer in textoverlay
is not exploitable because we lost all VA specific information.
Now, with GstVaapiVideoMeta information attached to a standard GstBuffer,
all information are preserved through gst_buffer_copy() since the latter
does copy metadata (qdata in this case).
Fix calculation of the time-out value for cases where no VA surface is
available for decoding. In this case, we need to wait until downstream
sink consumed at least one surface. The time-out was miscalculated as
it was always set to <current-time> + one second, which is not suitable
for streams with larger gaps.
Don't call gst_video_decoder_drop_frame() if gst_video_decoder_finish_frame()
was already called before and it returned an error. In that case, we were
releasing the frame again, thus leading to a "double-free" condition.
Maintain decoded surfaces as GstVideoCodecFrame objects instead of
GstVaapiSurfaceProxy objects. The latter will tend to be reduced to
the strict minimum: a context and a surface.
Make sure to push all decoded frames downstream as soon as possible.
This makes sure we don't need to wait for a new frame to be ready to
be decoded before receiving new decoded frames.
This also separates the decode process and the output process. The latter
could be moved to a specific GstTask later on.
Determine whether the buffer represents the top-field only by checking for
the GST_VIDEO_BUFFER_TFF flag instead of relying on the GstVaapiSurfaceProxy
flag. Also trust "interlaced" caps to determine whether the input frame
is interleaved or not.
Intermediate elements may produce a sub-buffer from a valid GstVaapiVideoBuffer
for non raw YUV cases. Make sure vaapipostproc now understands those buffers.
Intermediate elements may produce a sub-buffer from a valid GstVaapiVideoBuffer
for non raw YUV cases. Make sure vaapisink now understands those buffers.
Directly use the GstVideoCodecState associated with the VA decoder
instead of parsing caps again.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Make vaapidecode derive from the standard GstVideoDecoder base element
class. This simplifies the code to the strict minimum for the decoder
element and makes it easier to port to GStreamer 1.x API.
Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
GstVaapiSurfaceProxy does not use any particular functionality from
GObject. Actually, it only needs a basic object type with reference
counting.
This is an API and ABI change.
Try to allocate the GstVaapiUploader helper object prior to listing the
supported image formats. Otherwise, only a single generic caps is output
with no particular pixel format referenced in there.
Use GstVaapiUploader helper that automatically handles direct rendering
mode, thus making the "direct-rendering" property obsolete and hence it
is now removed.
The "direct-rendering" level 2, i.e. exposing VA surface buffers, was never
really well supported and it could actually trigger degraded performance.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Make vaapisink expose only the set of supported caps for raw YUV buffers.
Add gst_vaapi_uploader_get_caps() helper function to determine the set
of supported YUV caps as source (for images). This function actually
tries to zero and upload each image to a 64x64 test surface. Of course,
this relies on VA drivers to not claim success if vaPutImage() is not
correctly supported.
Add new GstVaapiUploader helper to upload raw YUV buffers to VA surfaces.
It is up to the caller to negotiate source caps (for images) and output
caps (for surfaces). gst_vaapi_uploader_has_direct_rendering() is available
to help decide between the creation of a GstVaapiVideoBuffer or a regular
GstBuffer on sink pads.
Signed-off-by: Zhao Halley <halley.zhao@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
The use of heap allocated GMutex/GCond is deprecated. Instead place them
inside the structure they are locking.
These changes switch to use g_mutex_init/g_cond_init rather than the heap
allocation functions.
Because we cannot test for a NULL pointer for the GMutex/GCond we must
initialise inside the GObject _init function and clear inside the _finalize
which is guaranteed to only be called once and after the object is no longer
in use.
Don't care of the return value for gst_vaapi_decoder_put_buffer()
during destruction of the element. Don't print out (uninitialised)
error code when allocation of video buffer failed.
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".
Add new gst_vaapi_codec_from_caps() helper to determine codec type from
the specified caps. Don't globally expose this function since this is
really trivial and only used in the vaapidecode element.
Previously, vaapidecode would wait up to one second until a free surface
is available, or it aborts decoding. Now, vaapidecode waits until the
last decoded surface was to be presented, plus one second. Besides, end
times are now expressed relative to the monotonic clock.
When playback stops the GstVaapiDecode object is reset into a clean
state. However, surfaces may still be referenced by library users and
unreferencing them after the reset triggers an access to an unset mutex.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
