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gstreamer/sys/d3d11/gstd3d11videosinkbin.c
Seungha Yang 60e223f4fd d3d11videosink: Add support for drawing on application's own texture 
Add a way to support drawing on application's texture instead of
usual window handle.
To make use of this new feature, application should follow below step.
1) Enable this feature by using "draw-on-shared-texture" property
2) Watch "begin-draw" signal
3) On "begin-draw" signal handler, application can request drawing
   by using "draw" signal action. Note that "draw" signal action
   should be happen before "begin-draw" signal handler is returned

NOTE 1) For texture sharing, creating a texture with
D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX flag is strongly recommend
if possible because we cannot ensure sync a texture
which was created with D3D11_RESOURCE_MISC_SHARED
and it would cause glitch with ID3D11VideoProcessor use case.

NOTE 2) Direct9Ex doesn't support texture sharing which was
created with D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX. In other words,
D3D11_RESOURCE_MISC_SHARED is the only option for Direct3D11/Direct9Ex interop.

NOTE 3) Because of missing synchronization around ID3D11VideoProcessor,
If shared texture was created with D3D11_RESOURCE_MISC_SHARED,
d3d11videosink might use fallback texture to convert DXVA texture
to normal Direct3D texture. Then converted texture will be
copied to user-provided shared texture.

* Why not use generic appsink approach?
In order for application to be able to store video data
which was produced by GStreamer in application's own texture,
there would be two possible approaches,
one is copying our texture into application's own texture,
and the other is drawing on application's own texture directly.
The former (appsink way) cannot be a zero-copy by nature.
In order to support zero-copy processing, we need to draw on
application's own texture directly.

For example, assume that application wants RGBA texture.
Then we can imagine following case.

"d3d11h264dec ! d3d11convert ! video/x-raw(memory:D3D11Memory),format=RGBA ! appsink"
                             ^
                             |_ allocate new Direct3D texture for RGBA format

In above case, d3d11convert will allocate new texture(s) for RGBA format
and then application will copy again the our RGBA texutre into
application's own texture. One texture allocation plus per frame GPU copy will hanppen
in that case therefore.
Moreover, in order for application to be able to access
our texture, we need to allocate texture with additional flags for
application's Direct3D11 device to be able to read texture data.
That would be another implementation burden on our side

But with this MR, we can configure pipeline in this way
"d3d11h264dec ! d3d11videosink".

In that way, we can save at least one texture allocation and
per frame texutre copy since d3d11videosink will convert incoming texture
into application's texture format directly without copy.

* What if we expose texture without conversion and application does
  conversion by itself?
As mentioned above, for application to be able to access our texture
from application's Direct3D11 device, we need to allocate texture
in a special form. But in some case, that might not be possible.
Also, if a texture belongs to decoder DPB, exposing such texture
to application is unsafe and usual Direct3D11 shader cannot handle
such texture. To convert format, ID3D11VideoProcessor API needs to
be used but that would be a implementation burden for application.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1873>
2021-01-26 18:14:37 +00:00

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
* Copyright (C) 2020 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 <gst/video/video.h>
#include <gst/video/gstvideosink.h>
#include <gst/video/videooverlay.h>
#include <gst/video/navigation.h>
#include <gst/d3d11/gstd3d11.h>
#include "gstd3d11videosink.h"
#include "gstd3d11videosinkbin.h"
#include "gstd3d11pluginutils.h"
enum
{
PROP_0,
/* basesink */
PROP_SYNC,
PROP_MAX_LATENESS,
PROP_QOS,
PROP_ASYNC,
PROP_TS_OFFSET,
PROP_ENABLE_LAST_SAMPLE,
PROP_LAST_SAMPLE,
PROP_BLOCKSIZE,
PROP_RENDER_DELAY,
PROP_THROTTLE_TIME,
PROP_MAX_BITRATE,
PROP_PROCESSING_DEADLINE,
PROP_STATS,
/* videosink */
PROP_SHOW_PREROLL_FRAME,
/* d3d11videosink */
PROP_ADAPTER,
PROP_FORCE_ASPECT_RATIO,
PROP_ENABLE_NAVIGATION_EVENTS,
PROP_FULLSCREEN_TOGGLE_MODE,
PROP_FULLSCREEN,
PROP_RENDER_STATS,
PROP_DRAW_ON_SHARED_TEXTURE,
};
/* basesink */
#define DEFAULT_SYNC TRUE
#define DEFAULT_MAX_LATENESS -1
#define DEFAULT_QOS FALSE
#define DEFAULT_ASYNC TRUE
#define DEFAULT_TS_OFFSET 0
#define DEFAULT_BLOCKSIZE 4096
#define DEFAULT_RENDER_DELAY 0
#define DEFAULT_ENABLE_LAST_SAMPLE TRUE
#define DEFAULT_THROTTLE_TIME 0
#define DEFAULT_MAX_BITRATE 0
#define DEFAULT_DROP_OUT_OF_SEGMENT TRUE
#define DEFAULT_PROCESSING_DEADLINE (20 * GST_MSECOND)
/* videosink */
#define DEFAULT_SHOW_PREROLL_FRAME TRUE
/* d3d11videosink */
#define DEFAULT_ADAPTER -1
#define DEFAULT_FORCE_ASPECT_RATIO TRUE
#define DEFAULT_ENABLE_NAVIGATION_EVENTS TRUE
#define DEFAULT_FULLSCREEN_TOGGLE_MODE GST_D3D11_WINDOW_FULLSCREEN_TOGGLE_MODE_NONE
#define DEFAULT_FULLSCREEN FALSE
#define DEFAULT_RENDER_STATS FALSE
#define DEFAULT_DRAW_ON_SHARED_TEXTURE FALSE
enum
{
/* signals */
SIGNAL_BEGIN_DRAW,
/* actions */
SIGNAL_DRAW,
LAST_SIGNAL
};
static guint gst_d3d11_video_sink_bin_signals[LAST_SIGNAL] = { 0, };
static GstStaticCaps pad_template_caps =
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, GST_D3D11_SINK_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D11_SINK_FORMATS) ";"
GST_VIDEO_CAPS_MAKE (GST_D3D11_SINK_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D11_SINK_FORMATS));
GST_DEBUG_CATEGORY (d3d11_video_sink_bin_debug);
#define GST_CAT_DEFAULT d3d11_video_sink_bin_debug
struct _GstD3D11VideoSinkBin
{
GstBin parent;
GstPad *sinkpad;
GstElement *upload;
GstElement *sink;
};
static void gst_d3d11_video_sink_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_video_sink_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void
gst_d3d11_video_sink_bin_video_overlay_init (GstVideoOverlayInterface * iface);
static void
gst_d3d11_video_sink_bin_navigation_init (GstNavigationInterface * iface);
static void gst_d311_video_sink_bin_on_begin_draw (GstD3D11VideoSink * sink,
gpointer self);
static gboolean
gst_d3d11_video_sink_bin_draw_action (GstD3D11VideoSinkBin * self,
gpointer shared_handle, guint texture_misc_flags, guint64 acquire_key,
guint64 release_key);
#define gst_d3d11_video_sink_bin_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstD3D11VideoSinkBin, gst_d3d11_video_sink_bin,
GST_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
gst_d3d11_video_sink_bin_video_overlay_init);
G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
gst_d3d11_video_sink_bin_navigation_init);
GST_DEBUG_CATEGORY_INIT (d3d11_video_sink_bin_debug,
"d3d11videosink", 0, "Direct3D11 Video Sink"));
static void
gst_d3d11_video_sink_bin_class_init (GstD3D11VideoSinkBinClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstCaps *caps;
gobject_class->set_property = gst_d3d11_video_sink_bin_set_property;
gobject_class->get_property = gst_d3d11_video_sink_bin_get_property;
/* basesink */
g_object_class_install_property (gobject_class, PROP_SYNC,
g_param_spec_boolean ("sync", "Sync", "Sync on the clock", DEFAULT_SYNC,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_LATENESS,
g_param_spec_int64 ("max-lateness", "Max Lateness",
"Maximum number of nanoseconds that a buffer can be late before it "
"is dropped (-1 unlimited)", -1, G_MAXINT64, DEFAULT_MAX_LATENESS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_QOS,
g_param_spec_boolean ("qos", "Qos",
"Generate Quality-of-Service events upstream", DEFAULT_QOS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ASYNC,
g_param_spec_boolean ("async", "Async",
"Go asynchronously to PAUSED", DEFAULT_ASYNC,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_TS_OFFSET,
g_param_spec_int64 ("ts-offset", "TS Offset",
"Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64,
DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ENABLE_LAST_SAMPLE,
g_param_spec_boolean ("enable-last-sample", "Enable Last Buffer",
"Enable the last-sample property", DEFAULT_ENABLE_LAST_SAMPLE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_LAST_SAMPLE,
g_param_spec_boxed ("last-sample", "Last Sample",
"The last sample received in the sink", GST_TYPE_SAMPLE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_BLOCKSIZE,
g_param_spec_uint ("blocksize", "Block size",
"Size in bytes to pull per buffer (0 = default)", 0, G_MAXUINT,
DEFAULT_BLOCKSIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RENDER_DELAY,
g_param_spec_uint64 ("render-delay", "Render Delay",
"Additional render delay of the sink in nanoseconds", 0, G_MAXUINT64,
DEFAULT_RENDER_DELAY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_THROTTLE_TIME,
g_param_spec_uint64 ("throttle-time", "Throttle time",
"The time to keep between rendered buffers (0 = disabled)", 0,
G_MAXUINT64, DEFAULT_THROTTLE_TIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAX_BITRATE,
g_param_spec_uint64 ("max-bitrate", "Max Bitrate",
"The maximum bits per second to render (0 = disabled)", 0,
G_MAXUINT64, DEFAULT_MAX_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROCESSING_DEADLINE,
g_param_spec_uint64 ("processing-deadline", "Processing deadline",
"Maximum processing deadline in nanoseconds", 0, G_MAXUINT64,
DEFAULT_PROCESSING_DEADLINE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_STATS,
g_param_spec_boxed ("stats", "Statistics",
"Sink Statistics", GST_TYPE_STRUCTURE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/* videosink */
g_object_class_install_property (gobject_class, PROP_SHOW_PREROLL_FRAME,
g_param_spec_boolean ("show-preroll-frame", "Show preroll frame",
"Whether to render video frames during preroll",
DEFAULT_SHOW_PREROLL_FRAME,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
/* d3d11videosink */
g_object_class_install_property (gobject_class, PROP_ADAPTER,
g_param_spec_int ("adapter", "Adapter",
"Adapter index for creating device (-1 for default)",
-1, G_MAXINT32, DEFAULT_ADAPTER,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
g_param_spec_boolean ("force-aspect-ratio",
"Force aspect ratio",
"When enabled, scaling will respect original aspect ratio",
DEFAULT_FORCE_ASPECT_RATIO,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ENABLE_NAVIGATION_EVENTS,
g_param_spec_boolean ("enable-navigation-events",
"Enable navigation events",
"When enabled, navigation events are sent upstream",
DEFAULT_ENABLE_NAVIGATION_EVENTS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FULLSCREEN_TOGGLE_MODE,
g_param_spec_flags ("fullscreen-toggle-mode",
"Full screen toggle mode",
"Full screen toggle mode used to trigger fullscreen mode change",
GST_D3D11_WINDOW_TOGGLE_MODE_GET_TYPE, DEFAULT_FULLSCREEN_TOGGLE_MODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FULLSCREEN,
g_param_spec_boolean ("fullscreen",
"fullscreen",
"Ignored when \"fullscreen-toggle-mode\" does not include \"property\"",
DEFAULT_FULLSCREEN, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#ifdef HAVE_DIRECT_WRITE
g_object_class_install_property (gobject_class, PROP_RENDER_STATS,
g_param_spec_boolean ("render-stats",
"Render Stats",
"Render statistics data (e.g., average framerate) on window",
DEFAULT_RENDER_STATS,
GST_PARAM_CONDITIONALLY_AVAILABLE | GST_PARAM_MUTABLE_READY |
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
#endif
g_object_class_install_property (gobject_class, PROP_DRAW_ON_SHARED_TEXTURE,
g_param_spec_boolean ("draw-on-shared-texture",
"Draw on shared texture",
"Draw on user provided shared texture instead of window. "
"When enabled, user can pass application's own texture to sink "
"by using \"draw\" action signal on \"begin-draw\" signal handler, "
"so that sink can draw video data on application's texture. "
"Supported texture formats for user texture are "
"DXGI_FORMAT_R8G8B8A8_UNORM, DXGI_FORMAT_B8G8R8A8_UNORM, and "
"DXGI_FORMAT_R10G10B10A2_UNORM.",
DEFAULT_DRAW_ON_SHARED_TEXTURE,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS));
gst_d3d11_video_sink_bin_signals[SIGNAL_BEGIN_DRAW] =
g_signal_new ("begin-draw", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstD3D11VideoSinkBinClass, begin_draw),
NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE);
gst_d3d11_video_sink_bin_signals[SIGNAL_DRAW] =
g_signal_new ("draw", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GstD3D11VideoSinkBinClass, draw), NULL, NULL, NULL,
G_TYPE_BOOLEAN, 4, G_TYPE_POINTER, G_TYPE_UINT, G_TYPE_UINT64,
G_TYPE_UINT64);
klass->draw = gst_d3d11_video_sink_bin_draw_action;
gst_element_class_set_static_metadata (element_class,
"Direct3D11 video sink bin", "Sink/Video",
"A Direct3D11 based videosink",
"Seungha Yang <seungha.yang@navercorp.com>");
caps = gst_d3d11_get_updated_template_caps (&pad_template_caps);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
gst_caps_unref (caps);
}
static void
gst_d3d11_video_sink_bin_init (GstD3D11VideoSinkBin * self)
{
GstPad *pad;
GstD3D11VideoSinkCallbacks callbacks;
self->upload = gst_element_factory_make ("d3d11upload", NULL);
if (!self->upload) {
GST_ERROR_OBJECT (self, "d3d11upload unavailable");
return;
}
self->sink = gst_element_factory_make ("d3d11videosinkelement", NULL);
if (!self->sink) {
gst_clear_object (&self->upload);
GST_ERROR_OBJECT (self, "d3d11videosinkelement unavailable");
return;
}
callbacks.begin_draw = gst_d311_video_sink_bin_on_begin_draw;
gst_d3d11_video_sink_set_callbacks (GST_D3D11_VIDEO_SINK (self->sink),
&callbacks, self);
gst_bin_add_many (GST_BIN (self), self->upload, self->sink, NULL);
gst_element_link_many (self->upload, self->sink, NULL);
pad = gst_element_get_static_pad (self->upload, "sink");
self->sinkpad = gst_ghost_pad_new ("sink", pad);
gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
gst_object_unref (pad);
}
static void
gst_d3d11_video_sink_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (object);
GParamSpec *sink_pspec;
sink_pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (self->sink),
pspec->name);
if (sink_pspec && G_PARAM_SPEC_TYPE (sink_pspec) == G_PARAM_SPEC_TYPE (pspec)) {
g_object_set_property (G_OBJECT (self->sink), pspec->name, value);
} else {
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gst_d3d11_video_sink_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (object);
g_object_get_property (G_OBJECT (self->sink), pspec->name, value);
}
static void
gst_d311_video_sink_bin_on_begin_draw (GstD3D11VideoSink * sink, gpointer self)
{
g_signal_emit (self, gst_d3d11_video_sink_bin_signals[SIGNAL_BEGIN_DRAW], 0,
NULL);
}
static gboolean
gst_d3d11_video_sink_bin_draw_action (GstD3D11VideoSinkBin * self,
gpointer shared_handle, guint texture_misc_flags, guint64 acquire_key,
guint64 release_key)
{
if (!self->sink) {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("D3D11VideoSink element wasn't configured"), (NULL));
return FALSE;
}
return gst_d3d11_video_sink_draw (GST_D3D11_VIDEO_SINK (self->sink),
shared_handle, texture_misc_flags, acquire_key, release_key);
}
/* VideoOverlay interface */
static void
gst_d3d11_video_sink_bin_set_window_handle (GstVideoOverlay * overlay,
guintptr window_id)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (overlay);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (self->sink),
window_id);
}
static void
gst_d3d11_video_sink_bin_set_render_rectangle (GstVideoOverlay * overlay,
gint x, gint y, gint width, gint height)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (overlay);
gst_video_overlay_set_render_rectangle (GST_VIDEO_OVERLAY (self->sink),
x, y, width, height);
}
static void
gst_d3d11_video_sink_bin_expose (GstVideoOverlay * overlay)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (overlay);
gst_video_overlay_expose (GST_VIDEO_OVERLAY (self->sink));
}
static void
gst_d3d11_video_sink_bin_handle_events (GstVideoOverlay * overlay,
gboolean handle_events)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (overlay);
gst_video_overlay_handle_events (GST_VIDEO_OVERLAY (self->sink),
handle_events);
}
static void
gst_d3d11_video_sink_bin_video_overlay_init (GstVideoOverlayInterface * iface)
{
iface->set_window_handle = gst_d3d11_video_sink_bin_set_window_handle;
iface->set_render_rectangle = gst_d3d11_video_sink_bin_set_render_rectangle;
iface->expose = gst_d3d11_video_sink_bin_expose;
iface->handle_events = gst_d3d11_video_sink_bin_handle_events;
}
/* Navigation interface */
static void
gst_d3d11_video_sink_bin_navigation_send_event (GstNavigation * navigation,
GstStructure * structure)
{
GstD3D11VideoSinkBin *self = GST_D3D11_VIDEO_SINK_BIN (navigation);
gst_navigation_send_event (GST_NAVIGATION (self->sink), structure);
}
static void
gst_d3d11_video_sink_bin_navigation_init (GstNavigationInterface * iface)
{
iface->send_event = gst_d3d11_video_sink_bin_navigation_send_event;
}
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