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gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
Seungha Yang e63a3a7f31 d3d11compositor: Don't try to read empty buffer 
The queued buffer may not be readable buffer in case that
upstream sends GAP event or so.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1497>
2022-01-13 20:27:50 +00:00

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/*
* GStreamer
* Copyright (C) 2004, 2008 Wim Taymans <wim@fluendo.com>
* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* Copyright (C) 2014 Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>
* Copyright (C) 2014 Thibault Saunier <tsaunier@gnome.org>
* 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-d3d11compositorelement
* @title: d3d11compositorelement
*
* A Direct3D11 based video compositing element.
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstd3d11compositor.h"
#include "gstd3d11converter.h"
#include "gstd3d11shader.h"
#include "gstd3d11pluginutils.h"
#include <string.h>
#include <wrl.h>
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_compositor_debug);
#define GST_CAT_DEFAULT gst_d3d11_compositor_debug
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
/**
* GstD3D11CompositorBlendOperation:
* @GST_D3D11_COMPOSITOR_BLEND_OP_ADD:
* Add source 1 and source 2
* @GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT:
* Subtract source 1 from source 2
* @GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT:
* Subtract source 2 from source 1
* @GST_D3D11_COMPOSITOR_BLEND_OP_MIN:
* Find the minimum of source 1 and source 2
* @GST_D3D11_COMPOSITOR_BLEND_OP_MAX:
* Find the maximum of source 1 and source 2
*
* Since: 1.20
*/
GType
gst_d3d11_compositor_blend_operation_get_type (void)
{
static GType blend_operation_type = 0;
static const GEnumValue blend_operator[] = {
{GST_D3D11_COMPOSITOR_BLEND_OP_ADD, "Add source and background",
"add"},
{GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT,
"Subtract source from background",
"subtract"},
{GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT,
"Subtract background from source",
"rev-subtract"},
{GST_D3D11_COMPOSITOR_BLEND_OP_MIN,
"Minimum of source and background", "min"},
{GST_D3D11_COMPOSITOR_BLEND_OP_MAX,
"Maximum of source and background", "max"},
{0, NULL, NULL},
};
if (!blend_operation_type) {
blend_operation_type =
g_enum_register_static ("GstD3D11CompositorBlendOperation",
blend_operator);
}
return blend_operation_type;
}
static GstD3D11CompositorBlendOperation
gst_d3d11_compositor_blend_operation_from_native (D3D11_BLEND_OP blend_op)
{
switch (blend_op) {
case D3D11_BLEND_OP_ADD:
return GST_D3D11_COMPOSITOR_BLEND_OP_ADD;
case D3D11_BLEND_OP_SUBTRACT:
return GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT;
case D3D11_BLEND_OP_REV_SUBTRACT:
return GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT;
case D3D11_BLEND_OP_MIN:
return GST_D3D11_COMPOSITOR_BLEND_OP_MIN;
case D3D11_BLEND_OP_MAX:
return GST_D3D11_COMPOSITOR_BLEND_OP_MAX;
default:
g_assert_not_reached ();
break;
}
return GST_D3D11_COMPOSITOR_BLEND_OP_ADD;
}
static D3D11_BLEND_OP
gst_d3d11_compositor_blend_operation_to_native (GstD3D11CompositorBlendOperation
op)
{
switch (op) {
case GST_D3D11_COMPOSITOR_BLEND_OP_ADD:
return D3D11_BLEND_OP_ADD;
case GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT:
return D3D11_BLEND_OP_SUBTRACT;
case GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT:
return D3D11_BLEND_OP_REV_SUBTRACT;
case GST_D3D11_COMPOSITOR_BLEND_OP_MIN:
return D3D11_BLEND_OP_MIN;
case GST_D3D11_COMPOSITOR_BLEND_OP_MAX:
return D3D11_BLEND_OP_MAX;
default:
g_assert_not_reached ();
break;
}
return D3D11_BLEND_OP_ADD;
}
/**
* GstD3D11CompositorBlend:
* @GST_D3D11_COMPOSITOR_BLEND_ZERO:
* The blend factor is (0, 0, 0, 0). No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_ONE:
* The blend factor is (1, 1, 1, 1). No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR:
* The blend factor is (Rs, Gs, Bs, As),
* that is color data (RGB) from a pixel shader. No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR:
* The blend factor is (1 - Rs, 1 - Gs, 1 - Bs, 1 - As),
* that is color data (RGB) from a pixel shader.
* The pre-blend operation inverts the data, generating 1 - RGB.
* @GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA:
* The blend factor is (As, As, As, As),
* that is alpha data (A) from a pixel shader. No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA:
* The blend factor is ( 1 - As, 1 - As, 1 - As, 1 - As),
* that is alpha data (A) from a pixel shader.
* The pre-blend operation inverts the data, generating 1 - A.
* @GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA:
* The blend factor is (Ad, Ad, Ad, Ad),
* that is alpha data from a render target. No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA:
* The blend factor is (1 - Ad, 1 - Ad, 1 - Ad, 1 - Ad),
* that is alpha data from a render target.
* The pre-blend operation inverts the data, generating 1 - A.
* @GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR:
* The blend factor is (Rd, Gd, Bd, Ad),
* that is color data from a render target. No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR:
* The blend factor is (1 - Rd, 1 - Gd, 1 - Bd, 1 - Ad),
* that is color data from a render target.
* The pre-blend operation inverts the data, generating 1 - RGB.
* @GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT:
* The blend factor is (f, f, f, 1); where f = min(As, 1 - Ad).
* The pre-blend operation clamps the data to 1 or less.
* @GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR:
* The blend factor is the blend factor set with
* ID3D11DeviceContext::OMSetBlendState. No pre-blend operation.
* @GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR:
* The blend factor is the blend factor set with
* ID3D11DeviceContext::OMSetBlendState.
* The pre-blend operation inverts the blend factor,
* generating 1 - blend_factor.
*
* Since: 1.20
*/
GType
gst_d3d11_compositor_blend_get_type (void)
{
static GType blend_type = 0;
static const GEnumValue blend[] = {
{GST_D3D11_COMPOSITOR_BLEND_ZERO,
"The blend factor is (0, 0, 0, 0)", "zero"},
{GST_D3D11_COMPOSITOR_BLEND_ONE,
"The blend factor is (1, 1, 1, 1)", "one"},
{GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR,
"The blend factor is (Rs, Gs, Bs, As)", "src-color"},
{GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR,
"The blend factor is (1 - Rs, 1 - Gs, 1 - Bs, 1 - As)",
"inv-src-color"},
{GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA,
"The blend factor is (As, As, As, As)", "src-alpha"},
{GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA,
"The blend factor is (1 - As, 1 - As, 1 - As, 1 - As)",
"inv-src-alpha"},
{GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA,
"The blend factor is (Ad, Ad, Ad, Ad)", "dest-alpha"},
{GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA,
"The blend factor is (1 - Ad, 1 - Ad, 1 - Ad, 1 - Ad)",
"inv-dest-alpha"},
{GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR,
"The blend factor is (Rd, Gd, Bd, Ad)", "dest-color"},
{GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR,
"The blend factor is (1 - Rd, 1 - Gd, 1 - Bd, 1 - Ad)",
"inv-dest-color"},
{GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT,
"The blend factor is (f, f, f, 1); where f = min(As, 1 - Ad)",
"src-alpha-sat"},
{GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR,
"User defined blend factor", "blend-factor"},
{GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR,
"Inverse of user defined blend factor", "inv-blend-factor"},
{0, NULL, NULL},
};
if (!blend_type) {
blend_type = g_enum_register_static ("GstD3D11CompositorBlend", blend);
}
return blend_type;
}
static GstD3D11CompositorBlend
gst_d3d11_compositor_blend_from_native (D3D11_BLEND blend)
{
switch (blend) {
case D3D11_BLEND_ZERO:
return GST_D3D11_COMPOSITOR_BLEND_ZERO;
case D3D11_BLEND_ONE:
return GST_D3D11_COMPOSITOR_BLEND_ONE;
case D3D11_BLEND_SRC_COLOR:
return GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR;
case D3D11_BLEND_INV_SRC_COLOR:
return GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR;
case D3D11_BLEND_SRC_ALPHA:
return GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA;
case D3D11_BLEND_INV_SRC_ALPHA:
return GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA;
case D3D11_BLEND_DEST_ALPHA:
return GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA;
case D3D11_BLEND_INV_DEST_ALPHA:
return GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA;
case D3D11_BLEND_DEST_COLOR:
return GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR;
case D3D11_BLEND_INV_DEST_COLOR:
return GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR;
case D3D11_BLEND_SRC_ALPHA_SAT:
return GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT;
case D3D11_BLEND_BLEND_FACTOR:
return GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR;
case D3D11_BLEND_INV_BLEND_FACTOR:
return GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR;
default:
g_assert_not_reached ();
break;
}
return GST_D3D11_COMPOSITOR_BLEND_ZERO;
}
static D3D11_BLEND
gst_d3d11_compositor_blend_to_native (GstD3D11CompositorBlend blend)
{
switch (blend) {
case GST_D3D11_COMPOSITOR_BLEND_ZERO:
return D3D11_BLEND_ZERO;
case GST_D3D11_COMPOSITOR_BLEND_ONE:
return D3D11_BLEND_ONE;
case GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR:
return D3D11_BLEND_SRC_COLOR;
case GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR:
return D3D11_BLEND_INV_SRC_COLOR;
case GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA:
return D3D11_BLEND_SRC_ALPHA;
case GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA:
return D3D11_BLEND_INV_SRC_ALPHA;
case GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA:
return D3D11_BLEND_DEST_ALPHA;
case GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA:
return D3D11_BLEND_INV_DEST_ALPHA;
case GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR:
return D3D11_BLEND_DEST_COLOR;
case GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR:
return D3D11_BLEND_INV_DEST_COLOR;
case GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT:
return D3D11_BLEND_SRC_ALPHA_SAT;
case GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR:
return D3D11_BLEND_BLEND_FACTOR;
case GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR:
return D3D11_BLEND_INV_BLEND_FACTOR;
default:
g_assert_not_reached ();
break;
}
return D3D11_BLEND_ZERO;
}
/**
* GstD3D11CompositorBackground:
*
* Background mode
*
* Since: 1.20
*/
GType
gst_d3d11_compositor_background_get_type (void)
{
static GType compositor_background_type = 0;
static const GEnumValue compositor_background[] = {
{GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER, "Checker pattern", "checker"},
{GST_D3D11_COMPOSITOR_BACKGROUND_BLACK, "Black", "black"},
{GST_D3D11_COMPOSITOR_BACKGROUND_WHITE, "White", "white"},
{GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT,
"Transparent Background to enable further compositing", "transparent"},
{0, NULL, NULL},
};
if (!compositor_background_type) {
compositor_background_type =
g_enum_register_static ("GstD3D11CompositorBackground",
compositor_background);
}
return compositor_background_type;
}
/**
* GstD3D11CompositorSizingPolicy:
*
* Sizing policy
*
* Since: 1.20
*/
GType
gst_d3d11_compositor_sizing_policy_get_type (void)
{
static GType sizing_policy_type = 0;
static const GEnumValue sizing_polices[] = {
{GST_D3D11_COMPOSITOR_SIZING_POLICY_NONE,
"None: Image is scaled to fill configured destination rectangle without "
"padding or keeping the aspect ratio", "none"},
{GST_D3D11_COMPOSITOR_SIZING_POLICY_KEEP_ASPECT_RATIO,
"Keep Aspect Ratio: Image is scaled to fit destination rectangle "
"specified by GstCompositorPad:{xpos, ypos, width, height} "
"with preserved aspect ratio. Resulting image will be centered in "
"the destination rectangle with padding if necessary",
"keep-aspect-ratio"},
{0, NULL, NULL},
};
if (!sizing_policy_type) {
sizing_policy_type =
g_enum_register_static ("GstD3D11CompositorSizingPolicy",
sizing_polices);
}
return sizing_policy_type;
}
/* *INDENT-OFF* */
static const gchar checker_vs_src[] =
"struct VS_INPUT\n"
"{\n"
" float4 Position : POSITION;\n"
"};\n"
"\n"
"struct VS_OUTPUT\n"
"{\n"
" float4 Position: SV_POSITION;\n"
"};\n"
"\n"
"VS_OUTPUT main(VS_INPUT input)\n"
"{\n"
" return input;\n"
"}\n";
static const gchar checker_ps_src[] =
"static const float blocksize = 8.0;\n"
"static const float4 high = float4(0.667, 0.667, 0.667, 1.0);\n"
"static const float4 low = float4(0.333, 0.333, 0.333, 1.0);\n"
"struct PS_INPUT\n"
"{\n"
" float4 Position: SV_POSITION;\n"
"};\n"
"struct PS_OUTPUT\n"
"{\n"
" float4 Plane: SV_TARGET;\n"
"};\n"
"PS_OUTPUT main(PS_INPUT input)\n"
"{\n"
" PS_OUTPUT output;\n"
" if ((input.Position.x % (blocksize * 2.0)) >= blocksize) {\n"
" if ((input.Position.y % (blocksize * 2.0)) >= blocksize)\n"
" output.Plane = low;\n"
" else\n"
" output.Plane = high;\n"
" } else {\n"
" if ((input.Position.y % (blocksize * 2.0)) < blocksize)\n"
" output.Plane = low;\n"
" else\n"
" output.Plane = high;\n"
" }\n"
" return output;\n"
"}\n";
/* *INDENT-ON* */
/**
* GstD3D11CompositorPad:
*
* Since: 1.20
*/
struct _GstD3D11CompositorPad
{
GstVideoAggregatorConvertPad parent;
GstD3D11Converter *convert;
GstBufferPool *fallback_pool;
GstBuffer *fallback_buf;
gboolean position_updated;
gboolean alpha_updated;
gboolean blend_desc_updated;
ID3D11BlendState *blend;
/* properties */
gint xpos;
gint ypos;
gint width;
gint height;
gdouble alpha;
D3D11_RENDER_TARGET_BLEND_DESC desc;
gfloat blend_factor[4];
GstD3D11CompositorSizingPolicy sizing_policy;
};
struct _GstD3D11Compositor
{
GstVideoAggregator parent;
GstD3D11Device *device;
GstBufferPool *fallback_pool;
GstBuffer *fallback_buf;
GstD3D11Quad *checker_background;
D3D11_VIEWPORT viewport;
gboolean reconfigured;
/* properties */
gint adapter;
GstD3D11CompositorBackground background;
};
enum
{
PROP_PAD_0,
PROP_PAD_XPOS,
PROP_PAD_YPOS,
PROP_PAD_WIDTH,
PROP_PAD_HEIGHT,
PROP_PAD_ALPHA,
PROP_PAD_BLEND_OP_RGB,
PROP_PAD_BLEND_OP_ALPHA,
PROP_PAD_BLEND_SRC_RGB,
PROP_PAD_BLEND_SRC_ALPHA,
PROP_PAD_BLEND_DEST_RGB,
PROP_PAD_BLEND_DEST_ALPHA,
PROP_PAD_BLEND_FACTOR_RED,
PROP_PAD_BLEND_FACTOR_GREEN,
PROP_PAD_BLEND_FACTOR_BLUE,
PROP_PAD_BLEND_FACTOR_ALPHA,
PROP_PAD_SIZING_POLICY,
};
#define DEFAULT_PAD_XPOS 0
#define DEFAULT_PAD_YPOS 0
#define DEFAULT_PAD_WIDTH 0
#define DEFAULT_PAD_HEIGHT 0
#define DEFAULT_PAD_ALPHA 1.0
#define DEFAULT_PAD_BLEND_OP_RGB GST_D3D11_COMPOSITOR_BLEND_OP_ADD
#define DEFAULT_PAD_BLEND_OP_ALPHA GST_D3D11_COMPOSITOR_BLEND_OP_ADD
#define DEFAULT_PAD_BLEND_SRC_RGB GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA
#define DEFAULT_PAD_BLEND_SRC_ALPHA GST_D3D11_COMPOSITOR_BLEND_ONE
#define DEFAULT_PAD_BLEND_DEST_RGB GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA
#define DEFAULT_PAD_BLEND_DEST_ALPHA GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA
#define DEFAULT_PAD_SIZING_POLICY GST_D3D11_COMPOSITOR_SIZING_POLICY_NONE
static void gst_d3d11_compositor_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_compositor_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean
gst_d3d11_compositor_pad_prepare_frame (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstBuffer * buffer,
GstVideoFrame * prepared_frame);
static void
gst_d3d11_compositor_pad_clean_frame (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame);
static void
gst_d3d11_compositor_pad_init_blend_options (GstD3D11CompositorPad * pad);
#define gst_d3d11_compositor_pad_parent_class parent_pad_class
G_DEFINE_TYPE (GstD3D11CompositorPad, gst_d3d11_compositor_pad,
GST_TYPE_VIDEO_AGGREGATOR_PAD);
static void
gst_d3d11_compositor_pad_class_init (GstD3D11CompositorPadClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstVideoAggregatorPadClass *vaggpadclass =
GST_VIDEO_AGGREGATOR_PAD_CLASS (klass);
gobject_class->set_property = gst_d3d11_compositor_pad_set_property;
gobject_class->get_property = gst_d3d11_compositor_pad_get_property;
g_object_class_install_property (gobject_class, PROP_PAD_XPOS,
g_param_spec_int ("xpos", "X Position", "X position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_XPOS,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_YPOS,
g_param_spec_int ("ypos", "Y Position", "Y position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_YPOS,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_WIDTH,
g_param_spec_int ("width", "Width", "Width of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_WIDTH,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_HEIGHT,
g_param_spec_int ("height", "Height", "Height of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_HEIGHT,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_PAD_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_BLEND_OP_RGB,
g_param_spec_enum ("blend-op-rgb", "Blend Operation RGB",
"Blend equation for RGB", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION,
DEFAULT_PAD_BLEND_OP_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_BLEND_OP_ALPHA,
g_param_spec_enum ("blend-op-alpha", "Blend Operation Alpha",
"Blend equation for alpha", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION,
DEFAULT_PAD_BLEND_OP_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_PAD_BLEND_SRC_RGB,
g_param_spec_enum ("blend-src-rgb", "Blend Source RGB",
"Blend factor for source RGB",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_PAD_BLEND_SRC_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_PAD_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_PAD_BLEND_SRC_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_PAD_BLEND_DEST_RGB,
g_param_spec_enum ("blend-dest-rgb",
"Blend Destination RGB",
"Blend factor for destination RGB",
GST_TYPE_D3D11_COMPOSITOR_BLEND,
DEFAULT_PAD_BLEND_DEST_RGB,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class,
PROP_PAD_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_PAD_BLEND_DEST_ALPHA,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PAD_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_PAD_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_PAD_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_PAD_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)));
g_object_class_install_property (gobject_class, PROP_PAD_SIZING_POLICY,
g_param_spec_enum ("sizing-policy", "Sizing policy",
"Sizing policy to use for image scaling",
GST_TYPE_D3D11_COMPOSITOR_SIZING_POLICY, DEFAULT_PAD_SIZING_POLICY,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE |
G_PARAM_STATIC_STRINGS)));
vaggpadclass->prepare_frame =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_prepare_frame);
vaggpadclass->clean_frame =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_clean_frame);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_BLEND,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_SIZING_POLICY,
(GstPluginAPIFlags) 0);
}
static void
gst_d3d11_compositor_pad_init (GstD3D11CompositorPad * pad)
{
pad->xpos = DEFAULT_PAD_XPOS;
pad->ypos = DEFAULT_PAD_YPOS;
pad->width = DEFAULT_PAD_WIDTH;
pad->height = DEFAULT_PAD_HEIGHT;
pad->alpha = DEFAULT_PAD_ALPHA;
pad->sizing_policy = DEFAULT_PAD_SIZING_POLICY;
gst_d3d11_compositor_pad_init_blend_options (pad);
}
static void
gst_d3d11_compositor_pad_update_blend_function (GstD3D11CompositorPad * pad,
D3D11_BLEND * value, GstD3D11CompositorBlend new_value)
{
D3D11_BLEND temp = gst_d3d11_compositor_blend_to_native (new_value);
if (temp == *value)
return;
*value = temp;
pad->blend_desc_updated = TRUE;
}
static void
gst_d3d11_compositor_pad_update_blend_equation (GstD3D11CompositorPad * pad,
D3D11_BLEND_OP * value, GstD3D11CompositorBlendOperation new_value)
{
D3D11_BLEND_OP temp =
gst_d3d11_compositor_blend_operation_to_native (new_value);
if (temp == *value)
return;
*value = temp;
pad->blend_desc_updated = TRUE;
}
static void
gst_d3d11_compositor_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorPad *pad = GST_D3D11_COMPOSITOR_PAD (object);
switch (prop_id) {
case PROP_PAD_XPOS:
pad->xpos = g_value_get_int (value);
pad->position_updated = TRUE;
break;
case PROP_PAD_YPOS:
pad->ypos = g_value_get_int (value);
pad->position_updated = TRUE;
break;
case PROP_PAD_WIDTH:
pad->width = g_value_get_int (value);
pad->position_updated = TRUE;
break;
case PROP_PAD_HEIGHT:
pad->height = g_value_get_int (value);
pad->position_updated = TRUE;
break;
case PROP_PAD_ALPHA:
{
gdouble alpha = g_value_get_double (value);
if (pad->alpha != alpha) {
pad->alpha_updated = TRUE;
pad->alpha = alpha;
}
break;
}
case PROP_PAD_BLEND_OP_RGB:
gst_d3d11_compositor_pad_update_blend_equation (pad, &pad->desc.BlendOp,
(GstD3D11CompositorBlendOperation) g_value_get_enum (value));
break;
case PROP_PAD_BLEND_OP_ALPHA:
gst_d3d11_compositor_pad_update_blend_equation (pad,
&pad->desc.BlendOpAlpha,
(GstD3D11CompositorBlendOperation) g_value_get_enum (value));
break;
case PROP_PAD_BLEND_SRC_RGB:
gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.SrcBlend,
(GstD3D11CompositorBlend) g_value_get_enum (value));
break;
case PROP_PAD_BLEND_SRC_ALPHA:
{
GstD3D11CompositorBlend blend =
(GstD3D11CompositorBlend) g_value_get_enum (value);
if (blend == GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR) {
g_warning ("%d is not allowed for %s", blend, pspec->name);
} else {
gst_d3d11_compositor_pad_update_blend_function (pad,
&pad->desc.SrcBlendAlpha, blend);
}
break;
}
case PROP_PAD_BLEND_DEST_RGB:
gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.DestBlend,
(GstD3D11CompositorBlend) g_value_get_enum (value));
break;
case PROP_PAD_BLEND_DEST_ALPHA:
{
GstD3D11CompositorBlend blend =
(GstD3D11CompositorBlend) g_value_get_enum (value);
if (blend == GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR ||
blend == GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR) {
g_warning ("%d is not allowed for %s", blend, pspec->name);
} else {
gst_d3d11_compositor_pad_update_blend_function (pad,
&pad->desc.DestBlendAlpha, blend);
}
break;
}
case PROP_PAD_BLEND_FACTOR_RED:
pad->blend_factor[0] = g_value_get_float (value);
break;
case PROP_PAD_BLEND_FACTOR_GREEN:
pad->blend_factor[1] = g_value_get_float (value);
break;
case PROP_PAD_BLEND_FACTOR_BLUE:
pad->blend_factor[2] = g_value_get_float (value);
break;
case PROP_PAD_BLEND_FACTOR_ALPHA:
pad->blend_factor[3] = g_value_get_float (value);
break;
case PROP_PAD_SIZING_POLICY:
pad->sizing_policy =
(GstD3D11CompositorSizingPolicy) g_value_get_enum (value);
pad->position_updated = TRUE;
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d11_compositor_pad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstD3D11CompositorPad *pad = GST_D3D11_COMPOSITOR_PAD (object);
switch (prop_id) {
case PROP_PAD_XPOS:
g_value_set_int (value, pad->xpos);
break;
case PROP_PAD_YPOS:
g_value_set_int (value, pad->ypos);
break;
case PROP_PAD_WIDTH:
g_value_set_int (value, pad->width);
break;
case PROP_PAD_HEIGHT:
g_value_set_int (value, pad->height);
break;
case PROP_PAD_ALPHA:
g_value_set_double (value, pad->alpha);
break;
case PROP_PAD_BLEND_OP_RGB:
g_value_set_enum (value,
gst_d3d11_compositor_blend_operation_from_native (pad->desc.BlendOp));
break;
case PROP_PAD_BLEND_OP_ALPHA:
g_value_set_enum (value,
gst_d3d11_compositor_blend_operation_from_native (pad->
desc.BlendOpAlpha));
break;
case PROP_PAD_BLEND_SRC_RGB:
g_value_set_enum (value,
gst_d3d11_compositor_blend_from_native (pad->desc.SrcBlend));
break;
case PROP_PAD_BLEND_SRC_ALPHA:
g_value_set_enum (value,
gst_d3d11_compositor_blend_from_native (pad->desc.SrcBlendAlpha));
break;
case PROP_PAD_BLEND_DEST_RGB:
g_value_set_enum (value,
gst_d3d11_compositor_blend_from_native (pad->desc.DestBlend));
break;
case PROP_PAD_BLEND_DEST_ALPHA:
g_value_set_enum (value,
gst_d3d11_compositor_blend_from_native (pad->desc.DestBlendAlpha));
break;
case PROP_PAD_BLEND_FACTOR_RED:
g_value_set_float (value, pad->blend_factor[0]);
break;
case PROP_PAD_BLEND_FACTOR_GREEN:
g_value_set_float (value, pad->blend_factor[1]);
break;
case PROP_PAD_BLEND_FACTOR_BLUE:
g_value_set_float (value, pad->blend_factor[2]);
break;
case PROP_PAD_BLEND_FACTOR_ALPHA:
g_value_set_float (value, pad->blend_factor[3]);
break;
case PROP_PAD_SIZING_POLICY:
g_value_set_enum (value, pad->sizing_policy);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d11_compositor_pad_init_blend_options (GstD3D11CompositorPad * pad)
{
guint i;
pad->desc.BlendEnable = TRUE;
pad->desc.SrcBlend =
gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_SRC_RGB);
pad->desc.DestBlend =
gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_DEST_RGB);
pad->desc.BlendOp =
gst_d3d11_compositor_blend_operation_to_native (DEFAULT_PAD_BLEND_OP_RGB);
pad->desc.SrcBlendAlpha =
gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_SRC_ALPHA);
pad->desc.DestBlendAlpha =
gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_DEST_ALPHA);
pad->desc.BlendOpAlpha =
gst_d3d11_compositor_blend_operation_to_native
(DEFAULT_PAD_BLEND_OP_ALPHA);
pad->desc.RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
for (i = 0; i < G_N_ELEMENTS (pad->blend_factor); i++)
pad->blend_factor[i] = 1.0f;
}
static gboolean
gst_d3d11_compositor_configure_fallback_pool (GstD3D11Compositor * self,
GstVideoInfo * info, gint bind_flags, GstBufferPool ** pool)
{
GstD3D11AllocationParams *d3d11_params;
GstBufferPool *new_pool;
GstCaps *caps;
if (*pool) {
gst_buffer_pool_set_active (*pool, FALSE);
gst_clear_object (pool);
}
caps = gst_video_info_to_caps (info);
if (!caps) {
GST_ERROR_OBJECT (self, "Couldn't create caps from info");
return FALSE;
}
d3d11_params = gst_d3d11_allocation_params_new (self->device,
info, (GstD3D11AllocationFlags) 0, bind_flags);
new_pool = gst_d3d11_buffer_pool_new_with_options (self->device,
caps, d3d11_params, 0, 0);
gst_caps_unref (caps);
gst_d3d11_allocation_params_free (d3d11_params);
if (!new_pool) {
GST_ERROR_OBJECT (self, "Failed to configure fallback pool");
return FALSE;
}
gst_buffer_pool_set_active (new_pool, TRUE);
*pool = new_pool;
return TRUE;
}
static gboolean
gst_d3d11_compsitor_prepare_fallback_buffer (GstD3D11Compositor * self,
GstVideoInfo * info, gboolean is_input, GstBufferPool ** pool,
GstBuffer ** fallback_buffer)
{
GstBuffer *new_buf = NULL;
gint bind_flags = D3D11_BIND_SHADER_RESOURCE;
guint i;
gst_clear_buffer (fallback_buffer);
if (!is_input)
bind_flags = D3D11_BIND_RENDER_TARGET;
if (*pool == NULL &&
!gst_d3d11_compositor_configure_fallback_pool (self, info,
bind_flags, pool)) {
GST_ERROR_OBJECT (self, "Couldn't configure fallback buffer pool");
return FALSE;
}
if (gst_buffer_pool_acquire_buffer (*pool, &new_buf, NULL)
!= GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Couldn't get fallback buffer from pool");
return FALSE;
}
for (i = 0; i < gst_buffer_n_memory (new_buf); i++) {
GstD3D11Memory *new_mem =
(GstD3D11Memory *) gst_buffer_peek_memory (new_buf, i);
if (is_input && !gst_d3d11_memory_get_shader_resource_view_size (new_mem)) {
GST_ERROR_OBJECT (self, "Couldn't prepare shader resource view");
gst_buffer_unref (new_buf);
return FALSE;
} else if (!is_input &&
!gst_d3d11_memory_get_render_target_view_size (new_mem)) {
GST_ERROR_OBJECT (self, "Couldn't prepare render target view");
gst_buffer_unref (new_buf);
return FALSE;
}
}
*fallback_buffer = new_buf;
return TRUE;
}
static gboolean
gst_d3d11_compositor_copy_buffer (GstD3D11Compositor * self,
GstVideoInfo * info, GstBuffer * src_buf, GstBuffer * dest_buf,
gboolean do_device_copy)
{
guint i;
if (do_device_copy) {
return gst_d3d11_buffer_copy_into (dest_buf, src_buf, info);
} else {
GstVideoFrame src_frame, dest_frame;
if (!gst_video_frame_map (&src_frame, info, src_buf,
(GstMapFlags) (GST_MAP_READ | GST_VIDEO_FRAME_MAP_FLAG_NO_REF))) {
GST_ERROR_OBJECT (self, "Couldn't map input buffer");
return FALSE;
}
if (!gst_video_frame_map (&dest_frame, info, dest_buf,
(GstMapFlags) (GST_MAP_WRITE | GST_VIDEO_FRAME_MAP_FLAG_NO_REF))) {
GST_ERROR_OBJECT (self, "Couldn't fallback buffer");
gst_video_frame_unmap (&src_frame);
return FALSE;
}
for (i = 0; i < GST_VIDEO_FRAME_N_PLANES (&src_frame); i++) {
if (!gst_video_frame_copy_plane (&dest_frame, &src_frame, i)) {
GST_ERROR_OBJECT (self, "Couldn't copy %dth plane", i);
gst_video_frame_unmap (&dest_frame);
gst_video_frame_unmap (&src_frame);
return FALSE;
}
}
gst_video_frame_unmap (&dest_frame);
gst_video_frame_unmap (&src_frame);
}
return TRUE;
}
static gboolean
gst_d3d11_compositor_check_d3d11_memory (GstD3D11Compositor * self,
GstBuffer * buffer, gboolean is_input, gboolean * view_available)
{
guint i;
gboolean ret = TRUE;
*view_available = TRUE;
for (i = 0; i < gst_buffer_n_memory (buffer); i++) {
GstMemory *mem = gst_buffer_peek_memory (buffer, i);
GstD3D11Memory *dmem;
if (!gst_is_d3d11_memory (mem)) {
ret = FALSE;
goto done;
}
dmem = (GstD3D11Memory *) mem;
if (dmem->device != self->device) {
ret = FALSE;
goto done;
}
if (is_input) {
if (!gst_d3d11_memory_get_shader_resource_view_size (dmem))
*view_available = FALSE;
} else {
if (!gst_d3d11_memory_get_render_target_view_size (dmem))
*view_available = FALSE;
}
}
done:
if (!ret)
*view_available = FALSE;
return ret;
}
static void
gst_d3d11_compositor_pad_get_output_size (GstD3D11CompositorPad * comp_pad,
gint out_par_n, gint out_par_d, gint * width, gint * height,
gint * x_offset, gint * y_offset)
{
GstVideoAggregatorPad *vagg_pad = GST_VIDEO_AGGREGATOR_PAD (comp_pad);
gint pad_width, pad_height;
guint dar_n, dar_d;
*x_offset = 0;
*y_offset = 0;
*width = 0;
*height = 0;
/* FIXME: Anything better we can do here? */
if (!vagg_pad->info.finfo
|| vagg_pad->info.finfo->format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_DEBUG_OBJECT (comp_pad, "Have no caps yet");
return;
}
pad_width =
comp_pad->width <=
0 ? GST_VIDEO_INFO_WIDTH (&vagg_pad->info) : comp_pad->width;
pad_height =
comp_pad->height <=
0 ? GST_VIDEO_INFO_HEIGHT (&vagg_pad->info) : comp_pad->height;
if (pad_width == 0 || pad_height == 0)
return;
if (!gst_video_calculate_display_ratio (&dar_n, &dar_d, pad_width, pad_height,
GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info), out_par_n, out_par_d)) {
GST_WARNING_OBJECT (comp_pad, "Cannot calculate display aspect ratio");
return;
}
GST_TRACE_OBJECT (comp_pad, "scaling %ux%u by %u/%u (%u/%u / %u/%u)",
pad_width, pad_height, dar_n, dar_d,
GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info), out_par_n, out_par_d);
switch (comp_pad->sizing_policy) {
case GST_D3D11_COMPOSITOR_SIZING_POLICY_NONE:
/* Pick either height or width, whichever is an integer multiple of the
* display aspect ratio. However, prefer preserving the height to account
* for interlaced video. */
if (pad_height % dar_n == 0) {
pad_width = gst_util_uint64_scale_int (pad_height, dar_n, dar_d);
} else if (pad_width % dar_d == 0) {
pad_height = gst_util_uint64_scale_int (pad_width, dar_d, dar_n);
} else {
pad_width = gst_util_uint64_scale_int (pad_height, dar_n, dar_d);
}
break;
case GST_D3D11_COMPOSITOR_SIZING_POLICY_KEEP_ASPECT_RATIO:
{
gint from_dar_n, from_dar_d, to_dar_n, to_dar_d, num, den;
/* Calculate DAR again with actual video size */
if (!gst_util_fraction_multiply (GST_VIDEO_INFO_WIDTH (&vagg_pad->info),
GST_VIDEO_INFO_HEIGHT (&vagg_pad->info),
GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info), &from_dar_n,
&from_dar_d)) {
from_dar_n = from_dar_d = -1;
}
if (!gst_util_fraction_multiply (pad_width, pad_height,
out_par_n, out_par_d, &to_dar_n, &to_dar_d)) {
to_dar_n = to_dar_d = -1;
}
if (from_dar_n != to_dar_n || from_dar_d != to_dar_d) {
/* Calculate new output resolution */
if (from_dar_n != -1 && from_dar_d != -1
&& gst_util_fraction_multiply (from_dar_n, from_dar_d,
out_par_d, out_par_n, &num, &den)) {
GstVideoRectangle src_rect, dst_rect, rst_rect;
src_rect.h = gst_util_uint64_scale_int (pad_width, den, num);
if (src_rect.h == 0) {
pad_width = 0;
pad_height = 0;
break;
}
src_rect.x = src_rect.y = 0;
src_rect.w = pad_width;
dst_rect.x = dst_rect.y = 0;
dst_rect.w = pad_width;
dst_rect.h = pad_height;
/* Scale rect to be centered in destination rect */
gst_video_center_rect (&src_rect, &dst_rect, &rst_rect, TRUE);
GST_LOG_OBJECT (comp_pad,
"Re-calculated size %dx%d -> %dx%d (x-offset %d, y-offset %d)",
pad_width, pad_height, rst_rect.w, rst_rect.h, rst_rect.x,
rst_rect.h);
*x_offset = rst_rect.x;
*y_offset = rst_rect.y;
pad_width = rst_rect.w;
pad_height = rst_rect.h;
} else {
GST_WARNING_OBJECT (comp_pad, "Failed to calculate output size");
*x_offset = 0;
*y_offset = 0;
pad_width = 0;
pad_height = 0;
}
}
break;
}
}
*width = pad_width;
*height = pad_height;
}
static GstVideoRectangle
clamp_rectangle (gint x, gint y, gint w, gint h, gint outer_width,
gint outer_height)
{
gint x2 = x + w;
gint y2 = y + h;
GstVideoRectangle clamped;
/* Clamp the x/y coordinates of this frame to the output boundaries to cover
* the case where (say, with negative xpos/ypos or w/h greater than the output
* size) the non-obscured portion of the frame could be outside the bounds of
* the video itself and hence not visible at all */
clamped.x = CLAMP (x, 0, outer_width);
clamped.y = CLAMP (y, 0, outer_height);
clamped.w = CLAMP (x2, 0, outer_width) - clamped.x;
clamped.h = CLAMP (y2, 0, outer_height) - clamped.y;
return clamped;
}
static gboolean
gst_d3d11_compositor_pad_check_frame_obscured (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg)
{
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
gint width, height;
GstVideoInfo *info = &vagg->info;
/* The rectangle representing this frame, clamped to the video's boundaries.
* Due to the clamping, this is different from the frame width/height above. */
GstVideoRectangle frame_rect;
gint x_offset, y_offset;
/* There's three types of width/height here:
* 1. GST_VIDEO_FRAME_WIDTH/HEIGHT:
* The frame width/height (same as pad->info.height/width;
* see gst_video_frame_map())
* 2. cpad->width/height:
* The optional pad property for scaling the frame (if zero, the video is
* left unscaled)
*/
gst_d3d11_compositor_pad_get_output_size (cpad, GST_VIDEO_INFO_PAR_N (info),
GST_VIDEO_INFO_PAR_D (info), &width, &height, &x_offset, &y_offset);
frame_rect = clamp_rectangle (cpad->xpos + x_offset, cpad->ypos + y_offset,
width, height, GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
if (frame_rect.w == 0 || frame_rect.h == 0) {
GST_DEBUG_OBJECT (pad, "Resulting frame is zero-width or zero-height "
"(w: %i, h: %i), skipping", frame_rect.w, frame_rect.h);
return TRUE;
}
return FALSE;
}
static gboolean
gst_d3d11_compositor_pad_prepare_frame (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstBuffer * buffer,
GstVideoFrame * prepared_frame)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg);
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
GstBuffer *target_buf = buffer;
gboolean do_device_copy = FALSE;
/* Skip this frame */
if (gst_d3d11_compositor_pad_check_frame_obscured (pad, vagg))
return TRUE;
/* Use fallback buffer when input buffer is:
* - non-d3d11 memory
* - or, from different d3d11 device
* - or not bound to shader resource
*/
if (!gst_d3d11_compositor_check_d3d11_memory (self,
buffer, TRUE, &do_device_copy) || !do_device_copy) {
if (!gst_d3d11_compsitor_prepare_fallback_buffer (self, &pad->info, TRUE,
&cpad->fallback_pool, &cpad->fallback_buf)) {
GST_ERROR_OBJECT (self, "Couldn't prepare fallback buffer");
return FALSE;
}
if (!gst_d3d11_compositor_copy_buffer (self, &pad->info, buffer,
cpad->fallback_buf, do_device_copy)) {
GST_ERROR_OBJECT (self, "Couldn't copy input buffer to fallback buffer");
gst_clear_buffer (&cpad->fallback_buf);
return FALSE;
}
target_buf = cpad->fallback_buf;
}
if (!gst_video_frame_map (prepared_frame, &pad->info, target_buf,
(GstMapFlags) (GST_MAP_READ | GST_MAP_D3D11))) {
GST_WARNING_OBJECT (pad, "Couldn't map input buffer");
return FALSE;
}
return TRUE;
}
static void
gst_d3d11_compositor_pad_clean_frame (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame)
{
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
GST_VIDEO_AGGREGATOR_PAD_CLASS (parent_pad_class)->clean_frame (pad,
vagg, prepared_frame);
gst_clear_buffer (&cpad->fallback_buf);
}
static gboolean
gst_d3d11_compositor_pad_setup_converter (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg)
{
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg);
RECT rect;
gint width, height;
GstVideoInfo *info = &vagg->info;
GstVideoRectangle frame_rect;
gboolean is_first = FALSE;
gint x_offset, y_offset;
#ifndef GST_DISABLE_GST_DEBUG
guint zorder = 0;
#endif
if (!cpad->convert || self->reconfigured) {
GstStructure *config;
if (cpad->convert)
gst_d3d11_converter_free (cpad->convert);
config = gst_structure_new_empty ("config");
if (cpad->alpha <= 1.0) {
gst_structure_set (config, GST_D3D11_CONVERTER_OPT_ALPHA_VALUE,
G_TYPE_DOUBLE, cpad->alpha, nullptr);
}
cpad->convert =
gst_d3d11_converter_new (self->device, &pad->info, &vagg->info, config);
if (!cpad->convert) {
GST_ERROR_OBJECT (pad, "Couldn't create converter");
return FALSE;
}
is_first = TRUE;
} else if (cpad->alpha_updated) {
GstStructure *config;
config = gst_structure_new_empty ("config");
if (cpad->alpha <= 1.0) {
gst_structure_set (config, GST_D3D11_CONVERTER_OPT_ALPHA_VALUE,
G_TYPE_DOUBLE, cpad->alpha, nullptr);
}
gst_d3d11_converter_update_config (cpad->convert, config);
cpad->alpha_updated = FALSE;
}
if (!cpad->blend || cpad->blend_desc_updated) {
HRESULT hr;
D3D11_BLEND_DESC desc = { 0, };
ID3D11BlendState *blend = NULL;
ID3D11Device *device_handle =
gst_d3d11_device_get_device_handle (self->device);
GST_D3D11_CLEAR_COM (cpad->blend);
desc.AlphaToCoverageEnable = FALSE;
desc.IndependentBlendEnable = FALSE;
desc.RenderTarget[0] = cpad->desc;
hr = device_handle->CreateBlendState (&desc, &blend);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (pad, "Couldn't create blend staten, hr: 0x%x",
(guint) hr);
return FALSE;
}
cpad->blend = blend;
}
if (!is_first && !cpad->position_updated)
return TRUE;
gst_d3d11_compositor_pad_get_output_size (cpad, GST_VIDEO_INFO_PAR_N (info),
GST_VIDEO_INFO_PAR_D (info), &width, &height, &x_offset, &y_offset);
frame_rect = clamp_rectangle (cpad->xpos + x_offset, cpad->ypos + y_offset,
width, height, GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
rect.left = frame_rect.x;
rect.top = frame_rect.y;
rect.right = frame_rect.x + frame_rect.w;
rect.bottom = frame_rect.y + frame_rect.h;
#ifndef GST_DISABLE_GST_DEBUG
g_object_get (pad, "zorder", &zorder, NULL);
GST_LOG_OBJECT (pad, "Update position, pad-xpos %d, pad-ypos %d, "
"pad-zorder %d, pad-width %d, pad-height %d, in-resolution %dx%d, "
"out-resoution %dx%d, dst-{left,top,right,bottom} %d-%d-%d-%d",
cpad->xpos, cpad->ypos, zorder, cpad->width, cpad->height,
GST_VIDEO_INFO_WIDTH (&pad->info), GST_VIDEO_INFO_HEIGHT (&pad->info),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info),
(gint) rect.left, (gint) rect.top, (gint) rect.right, (gint) rect.bottom);
#endif
cpad->position_updated = FALSE;
return gst_d3d11_converter_update_dest_rect (cpad->convert, &rect);
}
static GstStaticCaps pad_template_caps =
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, "{ RGBA, BGRA }"));
enum
{
PROP_0,
PROP_ADAPTER,
PROP_BACKGROUND,
};
#define DEFAULT_ADAPTER -1
#define DEFAULT_BACKGROUND GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER
static void gst_d3d11_compositor_child_proxy_init (gpointer g_iface,
gpointer iface_data);
static void gst_d3d11_compositor_dispose (GObject * object);
static void gst_d3d11_compositor_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d11_compositor_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstPad *gst_d3d11_compositor_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_d3d11_compositor_release_pad (GstElement * element,
GstPad * pad);
static void gst_d3d11_compositor_set_context (GstElement * element,
GstContext * context);
static gboolean gst_d3d11_compositor_start (GstAggregator * aggregator);
static gboolean gst_d3d11_compositor_stop (GstAggregator * aggregator);
static gboolean gst_d3d11_compositor_sink_query (GstAggregator * aggregator,
GstAggregatorPad * pad, GstQuery * query);
static gboolean gst_d3d11_compositor_src_query (GstAggregator * aggregator,
GstQuery * query);
static GstCaps *gst_d3d11_compositor_fixate_src_caps (GstAggregator *
aggregator, GstCaps * caps);
static gboolean gst_d3d11_compositor_propose_allocation (GstAggregator *
aggregator, GstAggregatorPad * pad, GstQuery * decide_query,
GstQuery * query);
static gboolean gst_d3d11_compositor_decide_allocation (GstAggregator *
aggregator, GstQuery * query);
static GstFlowReturn
gst_d3d11_compositor_aggregate_frames (GstVideoAggregator * vagg,
GstBuffer * outbuf);
static GstFlowReturn
gst_d3d11_compositor_create_output_buffer (GstVideoAggregator * vagg,
GstBuffer ** outbuffer);
#define gst_d3d11_compositor_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstD3D11Compositor, gst_d3d11_compositor,
GST_TYPE_VIDEO_AGGREGATOR, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
gst_d3d11_compositor_child_proxy_init));
static void
gst_d3d11_compositor_class_init (GstD3D11CompositorClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAggregatorClass *aggregator_class = GST_AGGREGATOR_CLASS (klass);
GstVideoAggregatorClass *vagg_class = GST_VIDEO_AGGREGATOR_CLASS (klass);
GstCaps *caps;
gobject_class->dispose = gst_d3d11_compositor_dispose;
gobject_class->set_property = gst_d3d11_compositor_set_property;
gobject_class->get_property = gst_d3d11_compositor_get_property;
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_D3D11_COMPOSITOR_BACKGROUND,
DEFAULT_BACKGROUND,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_request_new_pad);
element_class->release_pad =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_release_pad);
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_set_context);
aggregator_class->start = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_start);
aggregator_class->stop = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_stop);
aggregator_class->sink_query =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_sink_query);
aggregator_class->src_query =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_src_query);
aggregator_class->fixate_src_caps =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_fixate_src_caps);
aggregator_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_propose_allocation);
aggregator_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_decide_allocation);
vagg_class->aggregate_frames =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_aggregate_frames);
vagg_class->create_output_buffer =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_create_output_buffer);
caps = gst_d3d11_get_updated_template_caps (&pad_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_PAD));
gst_element_class_add_pad_template (element_class,
gst_pad_template_new_with_gtype ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
caps, GST_TYPE_AGGREGATOR_PAD));
gst_caps_unref (caps);
gst_element_class_set_static_metadata (element_class, "Direct3D11 Compositor",
"Filter/Editor/Video/Compositor",
"A Direct3D11 compositor", "Seungha Yang <seungha@centricular.com>");
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_BACKGROUND,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_PAD,
(GstPluginAPIFlags) 0);
}
static void
gst_d3d11_compositor_init (GstD3D11Compositor * self)
{
self->adapter = DEFAULT_ADAPTER;
self->background = DEFAULT_BACKGROUND;
}
static void
gst_d3d11_compositor_dispose (GObject * object)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object);
gst_clear_object (&self->device);
gst_clear_buffer (&self->fallback_buf);
gst_clear_object (&self->fallback_pool);
g_clear_pointer (&self->checker_background, gst_d3d11_quad_free);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_d3d11_compositor_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object);
switch (prop_id) {
case PROP_ADAPTER:
self->adapter = g_value_get_int (value);
break;
case PROP_BACKGROUND:
self->background =
(GstD3D11CompositorBackground) g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d11_compositor_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object);
switch (prop_id) {
case PROP_ADAPTER:
g_value_set_int (value, self->adapter);
break;
case PROP_BACKGROUND:
g_value_set_enum (value, self->background);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GObject *
gst_d3d11_compositor_child_proxy_get_child_by_index (GstChildProxy * proxy,
guint index)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (proxy);
GObject *obj = NULL;
GST_OBJECT_LOCK (self);
obj = (GObject *) g_list_nth_data (GST_ELEMENT_CAST (self)->sinkpads, index);
if (obj)
gst_object_ref (obj);
GST_OBJECT_UNLOCK (self);
return obj;
}
static guint
gst_d3d11_compositor_child_proxy_get_children_count (GstChildProxy * proxy)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (proxy);
guint count = 0;
GST_OBJECT_LOCK (self);
count = GST_ELEMENT_CAST (self)->numsinkpads;
GST_OBJECT_UNLOCK (self);
GST_INFO_OBJECT (self, "Children Count: %d", count);
return count;
}
static void
gst_d3d11_compositor_child_proxy_init (gpointer g_iface, gpointer iface_data)
{
GstChildProxyInterface *iface = (GstChildProxyInterface *) g_iface;
iface->get_child_by_index =
gst_d3d11_compositor_child_proxy_get_child_by_index;
iface->get_children_count =
gst_d3d11_compositor_child_proxy_get_children_count;
}
static GstPad *
gst_d3d11_compositor_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
{
GstPad *pad;
pad = GST_ELEMENT_CLASS (parent_class)->request_new_pad (element,
templ, name, caps);
if (pad == NULL)
goto could_not_create;
gst_child_proxy_child_added (GST_CHILD_PROXY (element), G_OBJECT (pad),
GST_OBJECT_NAME (pad));
GST_DEBUG_OBJECT (element, "Created new pad %s:%s", GST_DEBUG_PAD_NAME (pad));
return pad;
could_not_create:
{
GST_DEBUG_OBJECT (element, "could not create/add pad");
return NULL;
}
}
static gboolean
gst_d3d11_compositor_pad_clear_resource (GstD3D11Compositor * self,
GstD3D11CompositorPad * cpad, gpointer user_data)
{
gst_clear_buffer (&cpad->fallback_buf);
if (cpad->fallback_pool) {
gst_buffer_pool_set_active (cpad->fallback_pool, FALSE);
gst_clear_object (&cpad->fallback_pool);
}
g_clear_pointer (&cpad->convert, gst_d3d11_converter_free);
GST_D3D11_CLEAR_COM (cpad->blend);
return TRUE;
}
static void
gst_d3d11_compositor_release_pad (GstElement * element, GstPad * pad)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (element);
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
GST_DEBUG_OBJECT (self, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
gst_child_proxy_child_removed (GST_CHILD_PROXY (self), G_OBJECT (pad),
GST_OBJECT_NAME (pad));
gst_d3d11_compositor_pad_clear_resource (self, cpad, NULL);
GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad);
}
static void
gst_d3d11_compositor_set_context (GstElement * element, GstContext * context)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (element);
gst_d3d11_handle_set_context (element, context, self->adapter, &self->device);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_d3d11_compositor_start (GstAggregator * aggregator)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
if (!gst_d3d11_ensure_element_data (GST_ELEMENT_CAST (self),
self->adapter, &self->device)) {
GST_ERROR_OBJECT (self, "Failed to get D3D11 device");
return FALSE;
}
return GST_AGGREGATOR_CLASS (parent_class)->start (aggregator);
}
static gboolean
gst_d3d11_compositor_stop (GstAggregator * aggregator)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
g_clear_pointer (&self->checker_background, gst_d3d11_quad_free);
gst_clear_object (&self->device);
return GST_AGGREGATOR_CLASS (parent_class)->stop (aggregator);
}
static GstCaps *
gst_d3d11_compositor_sink_getcaps (GstPad * pad, GstCaps * filter)
{
GstCaps *sinkcaps;
GstCaps *template_caps;
GstCaps *filtered_caps;
GstCaps *returned_caps;
template_caps = gst_pad_get_pad_template_caps (pad);
sinkcaps = gst_pad_get_current_caps (pad);
if (sinkcaps == NULL) {
sinkcaps = gst_caps_ref (template_caps);
} else {
sinkcaps = gst_caps_merge (sinkcaps, gst_caps_ref (template_caps));
}
if (filter) {
filtered_caps = gst_caps_intersect (sinkcaps, filter);
gst_caps_unref (sinkcaps);
} else {
filtered_caps = sinkcaps; /* pass ownership */
}
returned_caps = gst_caps_intersect (filtered_caps, template_caps);
gst_caps_unref (template_caps);
gst_caps_unref (filtered_caps);
GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps);
return returned_caps;
}
static gboolean
gst_d3d11_compositor_sink_acceptcaps (GstPad * pad, GstCaps * caps)
{
gboolean ret;
GstCaps *template_caps;
GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
template_caps = gst_pad_get_pad_template_caps (pad);
template_caps = gst_caps_make_writable (template_caps);
ret = gst_caps_can_intersect (caps, template_caps);
GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
(ret ? "" : "not "), caps);
gst_caps_unref (template_caps);
return ret;
}
static gboolean
gst_d3d11_compositor_sink_query (GstAggregator * aggregator,
GstAggregatorPad * pad, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
gboolean ret;
ret = gst_d3d11_handle_context_query (GST_ELEMENT (aggregator), query,
self->device);
if (ret)
return TRUE;
break;
}
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_d3d11_compositor_sink_getcaps (GST_PAD (pad), filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
return TRUE;
}
case GST_QUERY_ACCEPT_CAPS:
{
GstCaps *caps;
gboolean ret;
gst_query_parse_accept_caps (query, &caps);
ret = gst_d3d11_compositor_sink_acceptcaps (GST_PAD (pad), caps);
gst_query_set_accept_caps_result (query, ret);
return TRUE;
}
default:
break;
}
return GST_AGGREGATOR_CLASS (parent_class)->sink_query (aggregator,
pad, query);
}
static gboolean
gst_d3d11_compositor_src_query (GstAggregator * aggregator, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
gboolean ret;
ret = gst_d3d11_handle_context_query (GST_ELEMENT (aggregator), query,
self->device);
if (ret)
return TRUE;
break;
}
default:
break;
}
return GST_AGGREGATOR_CLASS (parent_class)->src_query (aggregator, query);
}
static GstCaps *
gst_d3d11_compositor_fixate_src_caps (GstAggregator * aggregator,
GstCaps * caps)
{
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (aggregator);
GList *l;
gint best_width = -1, best_height = -1;
gint best_fps_n = -1, best_fps_d = -1;
gint par_n, par_d;
gdouble best_fps = 0.;
GstCaps *ret = NULL;
GstStructure *s;
ret = gst_caps_make_writable (caps);
/* we need this to calculate how large to make the output frame */
s = gst_caps_get_structure (ret, 0);
if (gst_structure_has_field (s, "pixel-aspect-ratio")) {
gst_structure_fixate_field_nearest_fraction (s, "pixel-aspect-ratio", 1, 1);
gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d);
} else {
par_n = par_d = 1;
}
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
GstVideoAggregatorPad *vaggpad = GST_VIDEO_AGGREGATOR_PAD (l->data);
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (vaggpad);
gint this_width, this_height;
gint width, height;
gint fps_n, fps_d;
gdouble cur_fps;
gint x_offset;
gint y_offset;
fps_n = GST_VIDEO_INFO_FPS_N (&vaggpad->info);
fps_d = GST_VIDEO_INFO_FPS_D (&vaggpad->info);
gst_d3d11_compositor_pad_get_output_size (cpad,
par_n, par_d, &width, &height, &x_offset, &y_offset);
if (width == 0 || height == 0)
continue;
/* {x,y}_offset represent padding size of each top and left area.
* To calculate total resolution, count bottom and right padding area
* as well here */
this_width = width + MAX (cpad->xpos + 2 * x_offset, 0);
this_height = height + MAX (cpad->ypos + 2 * y_offset, 0);
if (best_width < this_width)
best_width = this_width;
if (best_height < this_height)
best_height = this_height;
if (fps_d == 0)
cur_fps = 0.0;
else
gst_util_fraction_to_double (fps_n, fps_d, &cur_fps);
if (best_fps < cur_fps) {
best_fps = cur_fps;
best_fps_n = fps_n;
best_fps_d = fps_d;
}
}
GST_OBJECT_UNLOCK (vagg);
if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) {
best_fps_n = 25;
best_fps_d = 1;
best_fps = 25.0;
}
gst_structure_fixate_field_nearest_int (s, "width", best_width);
gst_structure_fixate_field_nearest_int (s, "height", best_height);
gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n,
best_fps_d);
ret = gst_caps_fixate (ret);
GST_LOG_OBJECT (aggregator, "Fixated caps %" GST_PTR_FORMAT, ret);
return ret;
}
static gboolean
gst_d3d11_compositor_propose_allocation (GstAggregator * aggregator,
GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
GstVideoInfo info;
GstBufferPool *pool;
GstCaps *caps;
guint size;
gst_query_parse_allocation (query, &caps, NULL);
if (caps == NULL)
return FALSE;
if (!gst_video_info_from_caps (&info, caps))
return FALSE;
if (gst_query_get_n_allocation_pools (query) == 0) {
GstD3D11AllocationParams *d3d11_params;
GstStructure *config;
d3d11_params = gst_d3d11_allocation_params_new (self->device, &info,
(GstD3D11AllocationFlags) 0, D3D11_BIND_SHADER_RESOURCE);
pool = gst_d3d11_buffer_pool_new_with_options (self->device,
caps, d3d11_params, 0, 0);
gst_d3d11_allocation_params_free (d3d11_params);
if (!pool) {
GST_ERROR_OBJECT (self, "Failed to create buffer pool");
return FALSE;
}
/* d3d11 buffer pool will update buffer size based on allocated texture,
* get size from config again */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config,
nullptr, &size, nullptr, nullptr);
gst_structure_free (config);
gst_query_add_allocation_pool (query, pool, size, 0, 0);
gst_object_unref (pool);
}
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
return TRUE;
}
static gboolean
gst_d3d11_compositor_decide_allocation (GstAggregator * aggregator,
GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator);
GstCaps *caps;
GstBufferPool *pool = NULL;
guint n, size, min, max;
GstVideoInfo info;
GstStructure *config;
GstD3D11AllocationParams *d3d11_params;
gst_query_parse_allocation (query, &caps, NULL);
if (!caps) {
GST_DEBUG_OBJECT (self, "No output caps");
return FALSE;
}
gst_video_info_from_caps (&info, caps);
n = gst_query_get_n_allocation_pools (query);
if (n > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
/* create our own pool */
if (pool) {
if (!GST_IS_D3D11_BUFFER_POOL (pool)) {
gst_clear_object (&pool);
} else {
GstD3D11BufferPool *dpool = GST_D3D11_BUFFER_POOL (pool);
if (dpool->device != self->device)
gst_clear_object (&pool);
}
}
if (!pool) {
pool = gst_d3d11_buffer_pool_new (self->device);
min = max = 0;
size = (guint) info.size;
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
d3d11_params = gst_buffer_pool_config_get_d3d11_allocation_params (config);
if (!d3d11_params) {
d3d11_params = gst_d3d11_allocation_params_new (self->device,
&info, (GstD3D11AllocationFlags) 0, D3D11_BIND_RENDER_TARGET);
} else {
guint i;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&info); i++) {
d3d11_params->desc[i].BindFlags |= D3D11_BIND_RENDER_TARGET;
}
}
gst_buffer_pool_config_set_d3d11_allocation_params (config, d3d11_params);
gst_d3d11_allocation_params_free (d3d11_params);
gst_buffer_pool_set_config (pool, config);
/* d3d11 buffer pool will update buffer size based on allocated texture,
* get size from config again */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr, nullptr);
gst_structure_free (config);
if (n > 0)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
gst_object_unref (pool);
self->reconfigured = TRUE;
return TRUE;
}
typedef struct
{
struct
{
FLOAT x;
FLOAT y;
FLOAT z;
} position;
struct
{
FLOAT u;
FLOAT v;
} texture;
} VertexData;
static GstD3D11Quad *
gst_d3d11_compositor_create_checker_quad (GstD3D11Compositor * self)
{
GstD3D11Quad *quad = NULL;
VertexData *vertex_data;
WORD *indices;
ID3D11Device *device_handle;
ID3D11DeviceContext *context_handle;
D3D11_MAPPED_SUBRESOURCE map;
D3D11_INPUT_ELEMENT_DESC input_desc;
D3D11_BUFFER_DESC buffer_desc;
/* *INDENT-OFF* */
ComPtr<ID3D11Buffer> vertex_buffer;
ComPtr<ID3D11Buffer> index_buffer;
ComPtr<ID3D11PixelShader> ps;
ComPtr<ID3D11VertexShader> vs;
ComPtr<ID3D11InputLayout> layout;
/* *INDENT-ON* */
HRESULT hr;
device_handle = gst_d3d11_device_get_device_handle (self->device);
context_handle = gst_d3d11_device_get_device_context_handle (self->device);
if (!gst_d3d11_create_pixel_shader (self->device, checker_ps_src, &ps)) {
GST_ERROR_OBJECT (self, "Couldn't setup pixel shader");
return NULL;
}
memset (&input_desc, 0, sizeof (D3D11_INPUT_ELEMENT_DESC));
input_desc.SemanticName = "POSITION";
input_desc.SemanticIndex = 0;
input_desc.Format = DXGI_FORMAT_R32G32B32_FLOAT;
input_desc.InputSlot = 0;
input_desc.AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
input_desc.InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
input_desc.InstanceDataStepRate = 0;
if (!gst_d3d11_create_vertex_shader (self->device, checker_vs_src,
&input_desc, 1, &vs, &layout)) {
GST_ERROR_OBJECT (self, "Couldn't setup vertex shader");
return NULL;
}
memset (&buffer_desc, 0, sizeof (D3D11_BUFFER_DESC));
buffer_desc.Usage = D3D11_USAGE_DYNAMIC;
buffer_desc.ByteWidth = sizeof (VertexData) * 4;
buffer_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
buffer_desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
hr = device_handle->CreateBuffer (&buffer_desc, NULL, &vertex_buffer);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self,
"Couldn't create vertex buffer, hr: 0x%x", (guint) hr);
return NULL;
}
hr = context_handle->Map (vertex_buffer.Get (),
0, D3D11_MAP_WRITE_DISCARD, 0, &map);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't map vertex buffer, hr: 0x%x", (guint) hr);
return NULL;
}
vertex_data = (VertexData *) map.pData;
/* bottom left */
/* bottom left */
vertex_data[0].position.x = -1.0f;
vertex_data[0].position.y = -1.0f;
vertex_data[0].position.z = 0.0f;
vertex_data[0].texture.u = 0.0f;
vertex_data[0].texture.v = 1.0f;
/* top left */
vertex_data[1].position.x = -1.0f;
vertex_data[1].position.y = 1.0f;
vertex_data[1].position.z = 0.0f;
vertex_data[1].texture.u = 0.0f;
vertex_data[1].texture.v = 0.0f;
/* top right */
vertex_data[2].position.x = 1.0f;
vertex_data[2].position.y = 1.0f;
vertex_data[2].position.z = 0.0f;
vertex_data[2].texture.u = 1.0f;
vertex_data[2].texture.v = 0.0f;
/* bottom right */
vertex_data[3].position.x = 1.0f;
vertex_data[3].position.y = -1.0f;
vertex_data[3].position.z = 0.0f;
vertex_data[3].texture.u = 1.0f;
vertex_data[3].texture.v = 1.0f;
context_handle->Unmap (vertex_buffer.Get (), 0);
buffer_desc.Usage = D3D11_USAGE_DYNAMIC;
buffer_desc.ByteWidth = sizeof (WORD) * 6;
buffer_desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
buffer_desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
hr = device_handle->CreateBuffer (&buffer_desc, NULL, &index_buffer);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self,
"Couldn't create index buffer, hr: 0x%x", (guint) hr);
return NULL;
}
hr = context_handle->Map (index_buffer.Get (),
0, D3D11_MAP_WRITE_DISCARD, 0, &map);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't map index buffer, hr: 0x%x", (guint) hr);
return NULL;
}
indices = (WORD *) map.pData;
/* clockwise indexing */
indices[0] = 0; /* bottom left */
indices[1] = 1; /* top left */
indices[2] = 2; /* top right */
indices[3] = 3; /* bottom right */
indices[4] = 0; /* bottom left */
indices[5] = 2; /* top right */
context_handle->Unmap (index_buffer.Get (), 0);
quad = gst_d3d11_quad_new (self->device,
ps.Get (), vs.Get (), layout.Get (), nullptr, 0,
vertex_buffer.Get (), sizeof (VertexData), index_buffer.Get (),
DXGI_FORMAT_R16_UINT, 6);
if (!quad) {
GST_ERROR_OBJECT (self, "Couldn't setup quad");
return NULL;
}
return quad;
}
static gboolean
gst_d3d11_compositor_draw_background_checker (GstD3D11Compositor * self,
ID3D11RenderTargetView * rtv)
{
if (!self->checker_background) {
GstVideoInfo *info = &GST_VIDEO_AGGREGATOR_CAST (self)->info;
self->checker_background = gst_d3d11_compositor_create_checker_quad (self);
if (!self->checker_background)
return FALSE;
self->viewport.TopLeftX = 0;
self->viewport.TopLeftY = 0;
self->viewport.Width = GST_VIDEO_INFO_WIDTH (info);
self->viewport.Height = GST_VIDEO_INFO_HEIGHT (info);
self->viewport.MinDepth = 0.0f;
self->viewport.MaxDepth = 1.0f;
}
return gst_d3d11_draw_quad_unlocked (self->checker_background,
&self->viewport, 1, NULL, 0, &rtv, 1, NULL, NULL, NULL, 0);
}
/* Must be called with d3d11 device lock */
static gboolean
gst_d3d11_compositor_draw_background (GstD3D11Compositor * self,
ID3D11RenderTargetView * rtv)
{
ID3D11DeviceContext *device_context =
gst_d3d11_device_get_device_context_handle (self->device);
FLOAT rgba[4] = { 0.0f, 0.0f, 0.0f, 1.0f };
switch (self->background) {
case GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER:
return gst_d3d11_compositor_draw_background_checker (self, rtv);
case GST_D3D11_COMPOSITOR_BACKGROUND_BLACK:
/* {0, 0, 0, 1} */
break;
case GST_D3D11_COMPOSITOR_BACKGROUND_WHITE:
rgba[0] = 1.0f;
rgba[1] = 1.0f;
rgba[2] = 1.0f;
break;
case GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT:
rgba[3] = 0.0f;
break;
default:
g_assert_not_reached ();
return FALSE;
}
device_context->ClearRenderTargetView (rtv, rgba);
return TRUE;
}
static GstFlowReturn
gst_d3d11_compositor_aggregate_frames (GstVideoAggregator * vagg,
GstBuffer * outbuf)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg);
GList *iter;
GstBuffer *target_buf = outbuf;
gboolean need_copy = FALSE;
gboolean do_device_copy = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
ID3D11RenderTargetView *rtv[GST_VIDEO_MAX_PLANES] = { NULL, };
guint i, j;
gint view_idx;
/* Use fallback buffer when output buffer is:
* - non-d3d11 memory
* - or, from different d3d11 device
* - or not bound to render target
*/
if (!gst_d3d11_compositor_check_d3d11_memory (self,
outbuf, FALSE, &do_device_copy) || !do_device_copy) {
if (!gst_d3d11_compsitor_prepare_fallback_buffer (self, &vagg->info, FALSE,
&self->fallback_pool, &self->fallback_buf)) {
GST_ERROR_OBJECT (self, "Couldn't prepare fallback buffer");
return GST_FLOW_ERROR;
}
GST_TRACE_OBJECT (self, "Will draw on fallback texture");
need_copy = TRUE;
target_buf = self->fallback_buf;
}
view_idx = 0;
for (i = 0; i < gst_buffer_n_memory (target_buf); i++) {
GstMemory *mem = gst_buffer_peek_memory (target_buf, i);
GstD3D11Memory *dmem;
guint rtv_size;
if (!gst_is_d3d11_memory (mem)) {
GST_ERROR_OBJECT (self, "Invalid output memory");
return GST_FLOW_ERROR;
}
dmem = (GstD3D11Memory *) mem;
rtv_size = gst_d3d11_memory_get_render_target_view_size (dmem);
if (!rtv_size) {
GST_ERROR_OBJECT (self, "Render target view is unavailable");
return GST_FLOW_ERROR;
}
for (j = 0; j < rtv_size; j++) {
g_assert (view_idx < GST_VIDEO_MAX_PLANES);
rtv[view_idx] = gst_d3d11_memory_get_render_target_view (dmem, j);
view_idx++;
}
/* Mark need-download for fallback buffer use case */
GST_MINI_OBJECT_FLAG_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD);
}
gst_d3d11_device_lock (self->device);
/* XXX: the number of render target view must be one here, since we support
* only RGBA or BGRA */
if (!gst_d3d11_compositor_draw_background (self, rtv[0])) {
GST_ERROR_OBJECT (self, "Couldn't draw background");
gst_d3d11_device_unlock (self->device);
ret = GST_FLOW_ERROR;
goto done;
}
GST_OBJECT_LOCK (self);
for (iter = GST_ELEMENT (vagg)->sinkpads; iter; iter = g_list_next (iter)) {
GstVideoAggregatorPad *pad = GST_VIDEO_AGGREGATOR_PAD (iter->data);
GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad);
GstVideoFrame *prepared_frame =
gst_video_aggregator_pad_get_prepared_frame (pad);
ID3D11ShaderResourceView *srv[GST_VIDEO_MAX_PLANES] = { NULL, };
GstBuffer *buffer;
if (!prepared_frame)
continue;
if (!gst_d3d11_compositor_pad_setup_converter (pad, vagg)) {
GST_ERROR_OBJECT (self, "Couldn't setup converter");
ret = GST_FLOW_ERROR;
break;
}
buffer = prepared_frame->buffer;
view_idx = 0;
for (i = 0; i < gst_buffer_n_memory (buffer); i++) {
GstD3D11Memory *dmem =
(GstD3D11Memory *) gst_buffer_peek_memory (buffer, i);
guint srv_size = gst_d3d11_memory_get_shader_resource_view_size (dmem);
for (j = 0; j < srv_size; j++) {
g_assert (view_idx < GST_VIDEO_MAX_PLANES);
srv[view_idx] = gst_d3d11_memory_get_shader_resource_view (dmem, j);
view_idx++;
}
}
if (!gst_d3d11_converter_convert_unlocked (cpad->convert, srv, rtv,
cpad->blend, cpad->blend_factor)) {
GST_ERROR_OBJECT (self, "Couldn't convert frame");
ret = GST_FLOW_ERROR;
break;
}
}
self->reconfigured = FALSE;
GST_OBJECT_UNLOCK (self);
gst_d3d11_device_unlock (self->device);
if (ret != GST_FLOW_OK)
goto done;
if (need_copy && !gst_d3d11_compositor_copy_buffer (self, &vagg->info,
target_buf, outbuf, do_device_copy)) {
GST_ERROR_OBJECT (self, "Couldn't copy input buffer to fallback buffer");
ret = GST_FLOW_ERROR;
}
done:
gst_clear_buffer (&self->fallback_buf);
return ret;
}
typedef struct
{
/* without holding ref */
GstD3D11Device *other_device;
gboolean have_same_device;
} DeviceCheckData;
static gboolean
gst_d3d11_compositor_check_device_update (GstElement * agg,
GstVideoAggregatorPad * vpad, DeviceCheckData * data)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
GstBuffer *buf;
GstMemory *mem;
GstD3D11Memory *dmem;
gboolean update_device = FALSE;
buf = gst_video_aggregator_pad_get_current_buffer (vpad);
if (!buf)
return TRUE;
/* Ignore gap buffer */
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP) ||
gst_buffer_get_size (buf) == 0) {
return TRUE;
}
mem = gst_buffer_peek_memory (buf, 0);
/* FIXME: we should be able to accept non-d3d11 memory later once
* we remove intermediate elements (d3d11upload and d3d11colorconvert)
*/
if (!gst_is_d3d11_memory (mem)) {
GST_ELEMENT_ERROR (agg, CORE, FAILED, (NULL), ("Invalid memory"));
return FALSE;
}
dmem = GST_D3D11_MEMORY_CAST (mem);
/* We can use existing device */
if (dmem->device == self->device) {
data->have_same_device = TRUE;
return FALSE;
}
if (self->adapter < 0) {
update_device = TRUE;
} else {
guint adapter = 0;
g_object_get (dmem->device, "adapter", &adapter, NULL);
/* The same GPU as what user wanted, update */
if (adapter == (guint) self->adapter)
update_device = TRUE;
}
if (!update_device)
return TRUE;
data->other_device = dmem->device;
/* Keep iterate since there might be one buffer which holds the same device
* as ours */
return TRUE;
}
static GstFlowReturn
gst_d3d11_compositor_create_output_buffer (GstVideoAggregator * vagg,
GstBuffer ** outbuffer)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg);
DeviceCheckData data;
/* Check whether there is at least one sinkpad which holds d3d11 buffer
* with compatible device, and if not, update our device */
data.other_device = NULL;
data.have_same_device = FALSE;
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (vagg),
(GstElementForeachPadFunc) gst_d3d11_compositor_check_device_update,
&data);
if (data.have_same_device || !data.other_device)
goto done;
/* Clear all device dependent resources */
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (vagg),
(GstElementForeachPadFunc) gst_d3d11_compositor_pad_clear_resource, NULL);
gst_clear_buffer (&self->fallback_buf);
if (self->fallback_pool) {
gst_buffer_pool_set_active (self->fallback_pool, FALSE);
gst_clear_object (&self->fallback_pool);
}
g_clear_pointer (&self->checker_background, gst_d3d11_quad_free);
GST_INFO_OBJECT (self, "Updating device %" GST_PTR_FORMAT " -> %"
GST_PTR_FORMAT, self->device, data.other_device);
gst_object_unref (self->device);
self->device = (GstD3D11Device *) gst_object_ref (data.other_device);
/* We cannot call gst_aggregator_negotiate() here, since GstVideoAggregator
* is holding GST_VIDEO_AGGREGATOR_LOCK() already.
* Mark reconfigure and do reconfigure later */
gst_pad_mark_reconfigure (GST_AGGREGATOR_SRC_PAD (vagg));
return GST_AGGREGATOR_FLOW_NEED_DATA;
done:
return GST_VIDEO_AGGREGATOR_CLASS (parent_class)->create_output_buffer (vagg,
outbuffer);
}
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