gstreamer/subprojects/gst-plugins-bad/sys/qsv/gstqsvallocator_va.cpp
Seungha Yang 64ed6075b7 qsv: Introduce H.264 Intel Quick Sync Video Encoder
A new implementation of Intel Quick Sync Video plugin.
This plugin supports both Windows and Linux but optimization for
VA/DMABuf is not implemented yet.

This new plugin has some notable differences compared with existing
MSDK plugin.

* Encoder will expose formats which can be natively supported
without internal conversion. This will make encoder
control/negotiation flow much simpler and cleaner than
that of MSDK plugin.

* This plugin includes QSV specific library loading helper,
called dispatcher, with QSV SDK headers as a part of this plugin.
So, there will be no more SDK version dependent #ifdef in the code
and also there will be no more build-time MSDK/oneVPL SDK
dependency.

* Memory allocator interop between GStreamer and QSV is re-designed
and decoupled. Instead of implementing QSV specific allocator/bufferpool,
this plugin will make use of generic GStreamer memory
allocator/bufferpool (e.g., GstD3D11Allocator and GstD3D11BufferPool).
Specifically, GstQsvAllocator object will help interop between
GstMemory and mfxFrameAllocator memory abstraction layers.

Note that because of the design decision, VA/DMABuf support is not made
as a part of this initial commit. We can add the optimization for Linux
later once GstVA library exposes allocator/bufferpool implementation as
an API like GstD3D11.

* Initial encoder implementation supports interop with GstD3D11
infrastructure, including zero-copy encoding with upstream D3D11 element.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1408>
2022-02-08 10:05:35 +00:00

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/* GStreamer
* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqsvallocator_va.h"
GST_DEBUG_CATEGORY_EXTERN (gst_qsv_allocator_debug);
#define GST_CAT_DEFAULT gst_qsv_allocator_debug
struct _GstQsvVaAllocator
{
GstQsvAllocator parent;
GstVaDisplay *display;
};
#define gst_qsv_va_allocator_parent_class parent_class
G_DEFINE_TYPE (GstQsvVaAllocator, gst_qsv_va_allocator, GST_TYPE_QSV_ALLOCATOR);
static void gst_qsv_va_allocator_dispose (GObject * object);
static mfxStatus gst_qsv_va_allocator_alloc (GstQsvAllocator * allocator,
mfxFrameAllocRequest * request, mfxFrameAllocResponse * response);
static GstBuffer *gst_qsv_va_allocator_upload (GstQsvAllocator * allocator,
const GstVideoInfo * info, GstBuffer * buffer, GstBufferPool * pool);
static void
gst_qsv_va_allocator_class_init (GstQsvVaAllocatorClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstQsvAllocatorClass *alloc_class = GST_QSV_ALLOCATOR_CLASS (klass);
object_class->dispose = gst_qsv_va_allocator_dispose;
alloc_class->alloc = GST_DEBUG_FUNCPTR (gst_qsv_va_allocator_alloc);
alloc_class->upload = GST_DEBUG_FUNCPTR (gst_qsv_va_allocator_upload);
}
static void
gst_qsv_va_allocator_init (GstQsvVaAllocator * self)
{
}
static void
gst_qsv_va_allocator_dispose (GObject * object)
{
GstQsvVaAllocator *self = GST_QSV_VA_ALLOCATOR (object);
gst_clear_object (&self->display);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static mfxStatus
gst_qsv_va_allocator_alloc (GstQsvAllocator * allocator,
mfxFrameAllocRequest * request, mfxFrameAllocResponse * response)
{
GST_ERROR_OBJECT (allocator, "Not implemented");
return MFX_ERR_UNSUPPORTED;
}
static GstBuffer *
gst_qsv_va_allocator_upload (GstQsvAllocator * allocator,
const GstVideoInfo * info, GstBuffer * buffer, GstBufferPool * pool)
{
GST_ERROR_OBJECT (allocator, "Not implemented");
return nullptr;
}
GstQsvAllocator *
gst_qsv_va_allocator_new (GstVaDisplay * display)
{
GstQsvVaAllocator *self;
g_return_val_if_fail (GST_IS_VA_DISPLAY (display), nullptr);
self = (GstQsvVaAllocator *)
g_object_new (GST_TYPE_QSV_VA_ALLOCATOR, nullptr);
self->display = (GstVaDisplay *) gst_object_ref (display);
gst_object_ref_sink (self);
return GST_QSV_ALLOCATOR (self);
}