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gstreamer/sys/d3d11/gstd3d11compositorbin.cpp
Seungha Yang 5b3e316039 d3d11: Port to C++ 
Direct3D11 objects are COM, and most COM C APIs are verbose
(C++ is a little better). So, by using C++ APIs, we can make code
shorter and more readable.
Moreover, "ComPtr" helper class (which is C++ only) can be
utilized, that is very helpful for avoiding error-prone COM refcounting
issue/leak.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2077>
2021-03-14 13:05:22 +09:00

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.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.
*/
/**
* SECTION:element-d3d11compositor
* @title: d3d11compositor
*
* A convenient bin which wraps #d3d11compositorelement for video composition
* with other helper elements to handle color conversion and memory transfer
* between Direct3D11 and system memory space.
*
* ## Example launch line
* ```
* gst-launch-1.0 d3d11compositor name=c ! d3d11videosink \
* videotestsrc ! video/x-raw,width=320,height=240 ! c. \
* videotestsrc pattern=ball ! video/x-raw,width=100,height=100 ! c.
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/controller/gstproxycontrolbinding.h>
#include "gstd3d11compositorbin.h"
#include "gstd3d11compositor.h"
#include "gstd3d11pluginutils.h"
/* *INDENT-OFF* */
G_BEGIN_DECLS
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_compositor_debug);
#define GST_CAT_DEFAULT gst_d3d11_compositor_debug
G_END_DECLS
/* *INDENT-ON* */
/****************************
* GstD3D11CompositorBinPad *
****************************/
enum
{
PROP_PAD_0,
/* GstAggregatorPad */
PROP_PAD_EMIT_SIGNALS,
};
/* GstAggregatorPad */
#define DEFAULT_PAD_EMIT_SIGNALS FALSE
enum
{
/* GstAggregatorPad */
SIGNAL_PAD_BUFFER_CONSUMED = 0,
SIGNAL_PAD_LAST,
};
static guint gst_d3d11_compositor_bin_pad_signals[SIGNAL_PAD_LAST] = { 0 };
/**
* GstD3D11CompositorBinPad:
*
* Since: 1.20
*/
struct _GstD3D11CompositorBinPad
{
GstGhostPad parent;
/* Holds ref */
GstPad *target;
gulong sig_id;
};
static void gst_d3d11_compositor_bin_pad_dispose (GObject * object);
static void gst_d3d11_compositor_bin_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_compositor_bin_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void
gst_d3d11_compositor_bin_pad_set_target_default (GstD3D11CompositorBinPad * pad,
GstPad * target);
G_DEFINE_TYPE (GstD3D11CompositorBinPad, gst_d3d11_compositor_bin_pad,
GST_TYPE_GHOST_PAD);
static void
gst_d3d11_compositor_bin_pad_class_init (GstD3D11CompositorBinPadClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose = gst_d3d11_compositor_bin_pad_dispose;
gobject_class->set_property = gst_d3d11_compositor_bin_pad_set_property;
gobject_class->get_property = gst_d3d11_compositor_bin_pad_get_property;
/* GstAggregatorPad */
g_object_class_install_property (gobject_class, PROP_PAD_EMIT_SIGNALS,
g_param_spec_boolean ("emit-signals", "Emit signals",
"Send signals to signal data consumption",
DEFAULT_PAD_EMIT_SIGNALS,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
gst_d3d11_compositor_bin_pad_signals[SIGNAL_PAD_BUFFER_CONSUMED] =
g_signal_new ("buffer-consumed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, GST_TYPE_BUFFER);
klass->set_target =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_bin_pad_set_target_default);
}
static void
gst_d3d11_compositor_bin_pad_init (GstD3D11CompositorBinPad * self)
{
}
static void
gst_d3d11_compositor_bin_pad_dispose (GObject * object)
{
GstD3D11CompositorBinPad *self = GST_D3D11_COMPOSITOR_BIN_PAD (object);
gst_clear_object (&self->target);
G_OBJECT_CLASS (gst_d3d11_compositor_bin_pad_parent_class)->dispose (object);
}
static void
gst_d3d11_compositor_bin_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBinPad *self = GST_D3D11_COMPOSITOR_BIN_PAD (object);
if (self->target)
g_object_set_property (G_OBJECT (self->target), pspec->name, value);
}
static void
gst_d3d11_compositor_bin_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBinPad *self = GST_D3D11_COMPOSITOR_BIN_PAD (object);
if (self->target)
g_object_get_property (G_OBJECT (self->target), pspec->name, value);
}
static void
gst_d3d11_compositor_bin_pad_on_buffer_consumed (GstAggregatorPad * pad,
GstBuffer * buffer, GstD3D11CompositorBinPad * self)
{
g_signal_emit (self,
gst_d3d11_compositor_bin_pad_signals[SIGNAL_PAD_BUFFER_CONSUMED],
0, buffer);
}
/**
* gst_d3d11_compositor_bin_pad_set_target:
* @self: a #GstD3D11CompositorBinPad
* @target: (transfer full): a #GstAggregatorPad
*/
static void
gst_d3d11_compositor_bin_pad_set_target (GstD3D11CompositorBinPad * pad,
GstPad * target)
{
GstD3D11CompositorBinPadClass *klass =
GST_D3D11_COMPOSITOR_BIN_PAD_GET_CLASS (pad);
klass->set_target (pad, target);
}
static void
gst_d3d11_compositor_bin_pad_set_target_default (GstD3D11CompositorBinPad * pad,
GstPad * target)
{
pad->target = target;
pad->sig_id = g_signal_connect (target, "buffer-consumed",
G_CALLBACK (gst_d3d11_compositor_bin_pad_on_buffer_consumed), pad);
}
static void
gst_d3d11_compositor_bin_pad_unset_target (GstD3D11CompositorBinPad * self)
{
if (!self->target)
return;
if (self->sig_id)
g_signal_handler_disconnect (self->target, self->sig_id);
self->sig_id = 0;
gst_clear_object (&self->target);
}
/******************************
* GstD3D11CompositorBinInput *
******************************/
enum
{
PROP_INPUT_0,
/* GstVideoAggregatorPad */
PROP_INPUT_ZORDER,
PROP_INPUT_REPEAT_AFTER_EOS,
PROP_INPUT_MAX_LAST_BUFFER_REPEAT,
/* GstD3D11CompositorPad */
PROP_INPUT_XPOS,
PROP_INPUT_YPOS,
PROP_INPUT_WIDTH,
PROP_INPUT_HEIGHT,
PROP_INPUT_ALPHA,
PROP_INPUT_BLEND_OP_RGB,
PROP_INPUT_BLEND_OP_ALPHA,
PROP_INPUT_BLEND_SRC_RGB,
PROP_INPUT_BLEND_SRC_ALPHA,
PROP_INPUT_BLEND_DEST_RGB,
PROP_INPUT_BLEND_DEST_ALPHA,
PROP_INPUT_BLEND_FACTOR_RED,
PROP_INPUT_BLEND_FACTOR_GREEN,
PROP_INPUT_BLEND_FACTOR_BLUE,
PROP_INPUT_BLEND_FACTOR_ALPHA,
};
/* GstVideoAggregatorPad */
#define DEFAULT_INPUT_ZORDER 0
#define DEFAULT_INPUT_REPEAT_AFTER_EOS FALSE
#define DEFAULT_INPUT_MAX_LAST_BUFFER_REPEAT GST_CLOCK_TIME_NONE
/* GstD3D11CompositorPad */
#define DEFAULT_INPUT_XPOS 0
#define DEFAULT_INPUT_YPOS 0
#define DEFAULT_INPUT_WIDTH 0
#define DEFAULT_INPUT_HEIGHT 0
#define DEFAULT_INPUT_ALPHA 1.0
#define DEFAULT_INPUT_BLEND_OP_RGB GST_D3D11_COMPOSITOR_BLEND_OP_ADD
#define DEFAULT_INPUT_BLEND_OP_ALPHA GST_D3D11_COMPOSITOR_BLEND_OP_ADD
#define DEFAULT_INPUT_BLEND_SRC_RGB GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA
#define DEFAULT_INPUT_BLEND_SRC_ALPHA GST_D3D11_COMPOSITOR_BLEND_ONE
#define DEFAULT_INPUT_BLEND_DEST_RGB GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA
#define DEFAULT_INPUT_BLEND_DEST_ALPHA GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA
/**
* GstD3D11CompositorBinInput:
*
* Since: 1.20
*/
struct _GstD3D11CompositorBinInput
{
GstD3D11CompositorBinPad parent;
};
static void gst_d3d11_compositor_bin_input_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_compositor_bin_input_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void
gst_d3d11_compositor_bin_input_set_target (GstD3D11CompositorBinPad * pad,
GstPad * target);
#define gst_d3d11_compositor_bin_input_parent_class input_parent_class
G_DEFINE_TYPE (GstD3D11CompositorBinInput, gst_d3d11_compositor_bin_input,
GST_TYPE_D3D11_COMPOSITOR_BIN_PAD);
static void
gst_d3d11_compositor_bin_input_class_init (GstD3D11CompositorBinInputClass *
klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstD3D11CompositorBinPadClass *pad_class =
GST_D3D11_COMPOSITOR_BIN_PAD_CLASS (klass);
gobject_class->set_property = gst_d3d11_compositor_bin_input_set_property;
gobject_class->get_property = gst_d3d11_compositor_bin_input_get_property;
/* GstVideoAggregatorPad */
g_object_class_install_property (gobject_class, PROP_INPUT_ZORDER,
g_param_spec_uint ("zorder", "Z-Order", "Z Order of the picture",
0, G_MAXUINT, DEFAULT_INPUT_ZORDER,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_REPEAT_AFTER_EOS,
g_param_spec_boolean ("repeat-after-eos", "Repeat After EOS",
"Repeat the " "last frame after EOS until all pads are EOS",
DEFAULT_INPUT_REPEAT_AFTER_EOS,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_INPUT_MAX_LAST_BUFFER_REPEAT,
g_param_spec_uint64 ("max-last-buffer-repeat", "Max Last Buffer Repeat",
"Repeat last buffer for time (in ns, -1=until EOS), "
"behaviour on EOS is not affected", 0, G_MAXUINT64,
DEFAULT_INPUT_MAX_LAST_BUFFER_REPEAT,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING |
G_PARAM_STATIC_STRINGS)));
/* GstD3D11CompositorPad */
g_object_class_install_property (gobject_class, PROP_INPUT_XPOS,
g_param_spec_int ("xpos", "X Position", "X position of the picture",
G_MININT, G_MAXINT, DEFAULT_INPUT_XPOS,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_YPOS,
g_param_spec_int ("ypos", "Y Position", "Y position of the picture",
G_MININT, G_MAXINT, DEFAULT_INPUT_YPOS,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_WIDTH,
g_param_spec_int ("width", "Width", "Width of the picture",
G_MININT, G_MAXINT, DEFAULT_INPUT_WIDTH,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_HEIGHT,
g_param_spec_int ("height", "Height", "Height of the picture",
G_MININT, G_MAXINT, DEFAULT_INPUT_HEIGHT,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_INPUT_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_OP_RGB,
g_param_spec_enum ("blend-op-rgb", "Blend Operation RGB",
"Blend equation for RGB", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION,
DEFAULT_INPUT_BLEND_OP_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_OP_ALPHA,
g_param_spec_enum ("blend-op-alpha", "Blend Operation Alpha",
"Blend equation for alpha", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION,
DEFAULT_INPUT_BLEND_OP_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_INPUT_BLEND_SRC_RGB,
g_param_spec_enum ("blend-src-rgb", "Blend Source RGB",
"Blend factor for source RGB",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_INPUT_BLEND_SRC_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_INPUT_BLEND_SRC_ALPHA,
g_param_spec_enum ("blend-src-alpha",
"Blend Source Alpha",
"Blend factor for source alpha, \"*-color\" values are not allowed",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_INPUT_BLEND_SRC_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_INPUT_BLEND_DEST_RGB,
g_param_spec_enum ("blend-dest-rgb",
"Blend Destination RGB",
"Blend factor for destination RGB",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_INPUT_BLEND_DEST_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_INPUT_BLEND_DEST_ALPHA,
g_param_spec_enum ("blend-dest-alpha",
"Blend Destination Alpha",
"Blend factor for destination alpha, "
"\"*-color\" values are not allowed",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_INPUT_BLEND_DEST_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_FACTOR_RED,
g_param_spec_float ("blend-factor-red", "Blend Factor Red",
"Blend factor for red component "
"when blend type is \"blend-factor\" or \"inv-blend-factor\"",
0.0, 1.0, 1.0,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_FACTOR_GREEN,
g_param_spec_float ("blend-factor-green", "Blend Factor Green",
"Blend factor for green component "
"when blend type is \"blend-factor\" or \"inv-blend-factor\"",
0.0, 1.0, 1.0,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_FACTOR_BLUE,
g_param_spec_float ("blend-factor-blue", "Blend Factor Blue",
"Blend factor for blue component "
"when blend type is \"blend-factor\" or \"inv-blend-factor\"",
0.0, 1.0, 1.0,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_INPUT_BLEND_FACTOR_ALPHA,
g_param_spec_float ("blend-factor-alpha", "Blend Factor Alpha",
"Blend factor for alpha component "
"when blend type is \"blend-factor\" or \"inv-blend-factor\"",
0.0, 1.0, 1.0,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
pad_class->set_target =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_bin_input_set_target);
}
static void
gst_d3d11_compositor_bin_input_init (GstD3D11CompositorBinInput * self)
{
}
static void
gst_d3d11_compositor_bin_input_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBinPad *pad = GST_D3D11_COMPOSITOR_BIN_PAD (object);
if (pad->target)
g_object_set_property (G_OBJECT (pad->target), pspec->name, value);
}
static void
gst_d3d11_compositor_bin_input_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBinPad *pad = GST_D3D11_COMPOSITOR_BIN_PAD (object);
if (pad->target)
g_object_get_property (G_OBJECT (pad->target), pspec->name, value);
}
static void
gst_d3d11_compositor_bin_input_set_target (GstD3D11CompositorBinPad * pad,
GstPad * target)
{
GST_D3D11_COMPOSITOR_BIN_PAD_CLASS (input_parent_class)->set_target (pad,
target);
#define ADD_BINDING(obj,ref,prop) \
gst_object_add_control_binding (GST_OBJECT (obj), \
gst_proxy_control_binding_new (GST_OBJECT (obj), prop, \
GST_OBJECT (ref), prop));
/* GstVideoAggregatorPad */
ADD_BINDING (target, pad, "zorder");
ADD_BINDING (target, pad, "repeat-after-eos");
/* GstD3D11CompositorPad */
ADD_BINDING (target, pad, "xpos");
ADD_BINDING (target, pad, "ypos");
ADD_BINDING (target, pad, "width");
ADD_BINDING (target, pad, "height");
ADD_BINDING (target, pad, "alpha");
ADD_BINDING (target, pad, "blend-op-rgb");
ADD_BINDING (target, pad, "blend-op-alpha");
ADD_BINDING (target, pad, "blend-src-rgb");
ADD_BINDING (target, pad, "blend-src-alpha");
ADD_BINDING (target, pad, "blend-dest-rgb");
ADD_BINDING (target, pad, "blend-dest-alpha");
ADD_BINDING (target, pad, "blend-factor-red");
ADD_BINDING (target, pad, "blend-factor-green");
ADD_BINDING (target, pad, "blend-factor-blue");
ADD_BINDING (target, pad, "blend-factor-alpha");
#undef ADD_BINDING
}
/*************************
* GstD3D11CompositorBin *
*************************/
static GstStaticCaps sink_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 (GST_D3D11_SINK_FORMATS));
static GstStaticCaps src_template_caps =
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, GST_D3D11_SRC_FORMATS) ";"
GST_VIDEO_CAPS_MAKE (GST_D3D11_SRC_FORMATS));
enum
{
PROP_0,
PROP_MIXER,
/* GstAggregator */
PROP_LATENCY,
PROP_MIN_UPSTREAM_LATENCY,
PROP_START_TIME_SELECTION,
PROP_START_TIME,
PROP_EMIT_SIGNALS,
/* GstD3D11Compositor */
PROP_ADAPTER,
PROP_BACKGROUND,
PROP_LAST
};
/* GstAggregator */
#define DEFAULT_LATENCY 0
#define DEFAULT_MIN_UPSTREAM_LATENCY 0
#define DEFAULT_START_TIME_SELECTION GST_AGGREGATOR_START_TIME_SELECTION_ZERO
#define DEFAULT_START_TIME (-1)
#define DEFAULT_EMIT_SIGNALS FALSE
/* GstD3D11Compositor */
#define DEFAULT_ADAPTER -1
#define DEFAULT_BACKGROUND GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER
typedef struct _GstD3D11CompositorBinChain
{
/* without ref */
GstD3D11CompositorBin *self;
GstD3D11CompositorBinPad *ghost_pad;
GstElement *upload;
GstElement *convert;
gulong probe_id;
} GstD3D11CompositorBinChain;
struct _GstD3D11CompositorBin
{
GstBin parent;
GstElement *compositor;
GList *input_chains;
gboolean running;
gint adapter;
};
static void gst_d3d11_compositor_bin_child_proxy_init (gpointer g_iface,
gpointer iface_data);
static void gst_d3d11_compositor_bin_dispose (GObject * object);
static void gst_d3d11_compositor_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_compositor_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstStateChangeReturn
gst_d3d11_compositor_bin_change_state (GstElement * element,
GstStateChange transition);
static GstPad *gst_d3d11_compositor_bin_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_d3d11_compositor_bin_release_pad (GstElement * element,
GstPad * pad);
#define gst_d3d11_compositor_bin_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstD3D11CompositorBin, gst_d3d11_compositor_bin,
GST_TYPE_BIN, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
gst_d3d11_compositor_bin_child_proxy_init));
static void
gst_d3d11_compositor_bin_class_init (GstD3D11CompositorBinClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstCaps *caps;
gobject_class->dispose = gst_d3d11_compositor_bin_dispose;
gobject_class->set_property = gst_d3d11_compositor_bin_set_property;
gobject_class->get_property = gst_d3d11_compositor_bin_get_property;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_bin_change_state);
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_bin_request_new_pad);
element_class->release_pad =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_bin_release_pad);
gst_element_class_set_static_metadata (element_class,
"Direct3D11 Compositor Bin",
"Filter/Editor/Video/Compositor",
"A Direct3D11 compositor bin", "Seungha Yang <seungha@centricular.com>");
caps = gst_d3d11_get_updated_template_caps (&sink_template_caps);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new_with_gtype ("sink_%u", GST_PAD_SINK, GST_PAD_REQUEST,
caps, GST_TYPE_D3D11_COMPOSITOR_BIN_INPUT));
gst_caps_unref (caps);
caps = gst_d3d11_get_updated_template_caps (&src_template_caps);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new_with_gtype ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
caps, GST_TYPE_D3D11_COMPOSITOR_BIN_PAD));
gst_caps_unref (caps);
g_object_class_install_property (gobject_class, PROP_MIXER,
g_param_spec_object ("mixer", "D3D11 mixer element",
"The d3d11 mixer chain to use",
GST_TYPE_ELEMENT,
(GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
/*GstAggregator */
g_object_class_install_property (gobject_class, PROP_LATENCY,
g_param_spec_uint64 ("latency", "Buffer latency",
"Additional latency in live mode to allow upstream "
"to take longer to produce buffers for the current "
"position (in nanoseconds)", 0, G_MAXUINT64,
DEFAULT_LATENCY,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MIN_UPSTREAM_LATENCY,
g_param_spec_uint64 ("min-upstream-latency", "Buffer latency",
"When sources with a higher latency are expected to be plugged "
"in dynamically after the aggregator has started playing, "
"this allows overriding the minimum latency reported by the "
"initial source(s). This is only taken into account when larger "
"than the actually reported minimum latency. (nanoseconds)",
0, G_MAXUINT64,
DEFAULT_LATENCY,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_START_TIME_SELECTION,
g_param_spec_enum ("start-time-selection", "Start Time Selection",
"Decides which start time is output",
gst_aggregator_start_time_selection_get_type (),
DEFAULT_START_TIME_SELECTION,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_START_TIME,
g_param_spec_uint64 ("start-time", "Start Time",
"Start time to use if start-time-selection=set", 0,
G_MAXUINT64,
DEFAULT_START_TIME,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_EMIT_SIGNALS,
g_param_spec_boolean ("emit-signals", "Emit signals",
"Send signals", DEFAULT_EMIT_SIGNALS,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
/* GstD3D11Compositor */
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,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_BACKGROUND,
g_param_spec_enum ("background", "Background", "Background type",
GST_TYPE_COMPOSITOR_BACKGROUND,
DEFAULT_BACKGROUND,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_BIN_PAD,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_BIN_INPUT,
(GstPluginAPIFlags) 0);
}
static void
gst_d3d11_compositor_bin_init (GstD3D11CompositorBin * self)
{
GstPad *pad;
GstPad *gpad;
GstElement *out_convert, *download;
self->compositor = gst_element_factory_make ("d3d11compositorelement", NULL);
out_convert = gst_element_factory_make ("d3d11colorconvert", NULL);
download = gst_element_factory_make ("d3d11download", NULL);
gst_bin_add_many (GST_BIN (self),
self->compositor, out_convert, download, NULL);
gst_element_link_many (self->compositor, out_convert, download, NULL);
gpad = (GstPad *) g_object_new (GST_TYPE_D3D11_COMPOSITOR_BIN_PAD,
"name", "src", "direction", GST_PAD_SRC, NULL);
pad = gst_element_get_static_pad (self->compositor, "src");
/* GstD3D11CompositorBinPad will hold reference of this compositor srcpad */
gst_d3d11_compositor_bin_pad_set_target ((GstD3D11CompositorBinPad *) gpad,
pad);
pad = gst_element_get_static_pad (download, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (gpad), pad);
gst_object_unref (pad);
gst_element_add_pad (GST_ELEMENT_CAST (self), gpad);
}
static void
gst_d3d11_compositor_bin_dispose (GObject * object)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (object);
GList *iter;
for (iter = self->input_chains; iter; iter = g_list_next (iter)) {
GstD3D11CompositorBinChain *chain =
(GstD3D11CompositorBinChain *) iter->data;
if (self->compositor && chain->ghost_pad && chain->ghost_pad->target) {
gst_element_release_request_pad (GST_ELEMENT_CAST (self->compositor),
chain->ghost_pad->target);
gst_d3d11_compositor_bin_pad_unset_target (chain->ghost_pad);
}
}
if (self->input_chains)
g_list_free_full (self->input_chains, (GDestroyNotify) g_free);
self->input_chains = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_d3d11_compositor_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (object);
switch (prop_id) {
case PROP_ADAPTER:
self->adapter = g_value_get_int (value);
/* fallthrough */
default:
g_object_set_property (G_OBJECT (self->compositor), pspec->name, value);
break;
}
}
static void
gst_d3d11_compositor_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (object);
switch (prop_id) {
case PROP_MIXER:
g_value_set_object (value, self->compositor);
break;
case PROP_ADAPTER:
g_value_set_int (value, self->adapter);
break;
default:
g_object_get_property (G_OBJECT (self->compositor), pspec->name, value);
break;
}
}
static GstStateChangeReturn
gst_d3d11_compositor_bin_change_state (GstElement * element,
GstStateChange transition)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
GST_OBJECT_LOCK (element);
self->running = TRUE;
GST_OBJECT_UNLOCK (element);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
GST_OBJECT_LOCK (self);
self->running = FALSE;
GST_OBJECT_UNLOCK (self);
default:
break;
}
return ret;
}
static GstD3D11CompositorBinChain *
gst_d3d11_compositor_bin_input_chain_new (GstD3D11CompositorBin * self,
GstPad * compositor_pad)
{
GstD3D11CompositorBinChain *chain;
GstPad *pad;
chain = g_new0 (GstD3D11CompositorBinChain, 1);
chain->self = self;
chain->upload = gst_element_factory_make ("d3d11upload", NULL);
chain->convert = gst_element_factory_make ("d3d11colorconvert", NULL);
/* 1. Create child elements and like */
gst_bin_add_many (GST_BIN (self), chain->upload, chain->convert, NULL);
gst_element_link (chain->upload, chain->convert);
pad = gst_element_get_static_pad (chain->convert, "src");
gst_pad_link (pad, compositor_pad);
gst_object_unref (pad);
chain->ghost_pad = (GstD3D11CompositorBinPad *)
g_object_new (GST_TYPE_D3D11_COMPOSITOR_BIN_INPUT, "name",
GST_OBJECT_NAME (compositor_pad), "direction", GST_PAD_SINK, NULL);
/* transfer ownership of compositor pad */
gst_d3d11_compositor_bin_pad_set_target (chain->ghost_pad, compositor_pad);
pad = gst_element_get_static_pad (chain->upload, "sink");
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (chain->ghost_pad), pad);
gst_object_unref (pad);
GST_OBJECT_LOCK (self);
if (self->running)
gst_pad_set_active (GST_PAD (chain->ghost_pad), TRUE);
GST_OBJECT_UNLOCK (self);
gst_element_add_pad (GST_ELEMENT_CAST (self),
GST_PAD_CAST (chain->ghost_pad));
gst_element_sync_state_with_parent (chain->upload);
gst_element_sync_state_with_parent (chain->convert);
return chain;
}
static void
gst_d3d11_compositor_bin_input_chain_free (GstD3D11CompositorBinChain * chain)
{
if (!chain)
return;
if (chain->ghost_pad && chain->probe_id) {
gst_pad_remove_probe (GST_PAD_CAST (chain->ghost_pad), chain->probe_id);
chain->probe_id = 0;
}
if (chain->upload) {
gst_element_set_state (chain->upload, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (chain->self), chain->upload);
}
if (chain->convert) {
gst_element_set_state (chain->convert, GST_STATE_NULL);
gst_bin_remove (GST_BIN_CAST (chain->self), chain->convert);
}
if (chain->ghost_pad && chain->ghost_pad->target) {
gst_element_release_request_pad (chain->self->compositor,
chain->ghost_pad->target);
gst_d3d11_compositor_bin_pad_unset_target (chain->ghost_pad);
}
g_free (chain);
}
static GstPad *
gst_d3d11_compositor_bin_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (element);
GstElementClass *compositor_class = GST_ELEMENT_GET_CLASS (self->compositor);
GstPad *compositor_pad;
GstD3D11CompositorBinChain *chain;
GstPadTemplate *compositor_templ = NULL;
GList *templ_list;
GList *iter;
templ_list = gst_element_class_get_pad_template_list (compositor_class);
for (iter = templ_list; iter; iter = g_list_next (iter)) {
GstPadTemplate *t = (GstPadTemplate *) iter->data;
if (GST_PAD_TEMPLATE_DIRECTION (t) != GST_PAD_SINK ||
GST_PAD_TEMPLATE_PRESENCE (t) != GST_PAD_REQUEST)
continue;
compositor_templ = t;
break;
}
g_assert (compositor_templ);
compositor_pad =
gst_element_request_pad (self->compositor, compositor_templ, name, caps);
if (!compositor_pad) {
GST_WARNING_OBJECT (self, "Failed to request pad");
return NULL;
}
chain = gst_d3d11_compositor_bin_input_chain_new (self, compositor_pad);
g_assert (chain);
GST_OBJECT_LOCK (self);
self->input_chains = g_list_append (self->input_chains, chain);
GST_OBJECT_UNLOCK (self);
gst_child_proxy_child_added (GST_CHILD_PROXY (self),
G_OBJECT (chain->ghost_pad), GST_OBJECT_NAME (chain->ghost_pad));
GST_DEBUG_OBJECT (element, "Created new pad %s:%s",
GST_DEBUG_PAD_NAME (chain->ghost_pad));
return GST_PAD_CAST (chain->ghost_pad);
}
static void
gst_d3d11_compositor_bin_release_pad (GstElement * element, GstPad * pad)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (element);
GList *iter;
gboolean found = FALSE;
GST_DEBUG_OBJECT (self, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
GST_OBJECT_LOCK (self);
for (iter = self->input_chains; iter; iter = g_list_next (iter)) {
GstD3D11CompositorBinChain *chain =
(GstD3D11CompositorBinChain *) iter->data;
if (pad == GST_PAD_CAST (chain->ghost_pad)) {
self->input_chains = g_list_delete_link (self->input_chains, iter);
GST_OBJECT_UNLOCK (self);
gst_d3d11_compositor_bin_input_chain_free (chain);
found = TRUE;
break;
}
}
if (!found) {
GST_OBJECT_UNLOCK (self);
GST_WARNING_OBJECT (self, "Unknown pad to release %s:%s",
GST_DEBUG_PAD_NAME (pad));
}
gst_element_remove_pad (element, pad);
}
static GObject *
gst_d3d11_compositor_bin_child_proxy_get_child_by_index (GstChildProxy * proxy,
guint index)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (proxy);
GstBin *bin = GST_BIN_CAST (proxy);
GObject *res = NULL;
GST_OBJECT_LOCK (self);
/* XXX: not exactly thread safe with ordering */
if (index < (guint) bin->numchildren) {
if ((res = (GObject *) g_list_nth_data (bin->children, index)))
gst_object_ref (res);
} else {
GstD3D11CompositorBinChain *chain;
if ((chain =
(GstD3D11CompositorBinChain *) g_list_nth_data (self->input_chains,
index - bin->numchildren))) {
res = (GObject *) gst_object_ref (chain->ghost_pad);
}
}
GST_OBJECT_UNLOCK (self);
return res;
}
static guint
gst_d3d11_compositor_bin_child_proxy_get_children_count (GstChildProxy * proxy)
{
GstD3D11CompositorBin *self = GST_D3D11_COMPOSITOR_BIN (proxy);
guint count = 0;
GST_OBJECT_LOCK (self);
count = GST_BIN_CAST (self)->numchildren + g_list_length (self->input_chains);
GST_OBJECT_UNLOCK (self);
GST_INFO_OBJECT (self, "Children Count: %d", count);
return count;
}
static void
gst_d3d11_compositor_bin_child_proxy_init (gpointer g_iface,
gpointer iface_data)
{
GstChildProxyInterface *iface = (GstChildProxyInterface *) g_iface;
iface->get_child_by_index =
gst_d3d11_compositor_bin_child_proxy_get_child_by_index;
iface->get_children_count =
gst_d3d11_compositor_bin_child_proxy_get_children_count;
}
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