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gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
Seungha Yang 1dd29a2564 d3d11: Move HLSL compiler to gst-libs 
We should move this functionality to gst-libs so that GstD3D11Converter
can be moved to gst-libs.
Another advantage is that applications can call our
HLSL compiler wrapper method without any worry about OS version
dependent system installed HLSL library.
Note that there are multiple HLSL compiler library versions
on Windows and system installed one would be OS version dependent.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2760>
2022-07-15 06:31:51 +09:00

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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-d3d11compositor
* @title: d3d11compositor
*
* A Direct3D11 based video compositing element.
*
* ## 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 "gstd3d11compositor.h"
#include "gstd3d11converter.h"
#include "gstd3d11pluginutils.h"
#include <string.h>
#include <wrl.h>
GST_DEBUG_CATEGORY_STATIC (gst_d3d11_compositor_debug);
#define GST_CAT_DEFAULT gst_d3d11_compositor_debug
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
typedef enum
{
GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER,
GST_D3D11_COMPOSITOR_BACKGROUND_BLACK,
GST_D3D11_COMPOSITOR_BACKGROUND_WHITE,
GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT,
} GstD3D11CompositorBackground;
#define GST_TYPE_D3D11_COMPOSITOR_BACKGROUND (gst_d3d11_compositor_background_get_type())
static 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, nullptr, nullptr},
};
if (!compositor_background_type) {
compositor_background_type =
g_enum_register_static ("GstD3D11CompositorBackground",
compositor_background);
}
return compositor_background_type;
}
typedef enum
{
GST_D3D11_COMPOSITOR_OPERATOR_SOURCE,
GST_D3D11_COMPOSITOR_OPERATOR_OVER,
} GstD3D11CompositorOperator;
#define GST_TYPE_D3D11_COMPOSITOR_OPERATOR (gst_d3d11_compositor_operator_get_type())
static GType
gst_d3d11_compositor_operator_get_type (void)
{
static GType compositor_operator_type = 0;
static const GEnumValue compositor_operator[] = {
{GST_D3D11_COMPOSITOR_OPERATOR_SOURCE, "Source", "source"},
{GST_D3D11_COMPOSITOR_OPERATOR_OVER, "Over", "over"},
{0, nullptr, nullptr},
};
if (!compositor_operator_type) {
compositor_operator_type =
g_enum_register_static ("GstD3D11CompositorOperator",
compositor_operator);
}
return compositor_operator_type;
}
typedef enum
{
GST_D3D11_COMPOSITOR_SIZING_POLICY_NONE,
GST_D3D11_COMPOSITOR_SIZING_POLICY_KEEP_ASPECT_RATIO,
} GstD3D11CompositorSizingPolicy;
#define GST_TYPE_D3D11_COMPOSITOR_SIZING_POLICY (gst_d3d11_compositor_sizing_policy_get_type())
static 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, nullptr, nullptr},
};
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_rgb[] =
"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";
static const gchar checker_ps_src_vuya[] =
"static const float blocksize = 8.0;\n"
"static const float4 high = float4(0.5, 0.5, 0.667, 1.0);\n"
"static const float4 low = float4(0.5, 0.5, 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";
static const gchar checker_ps_src_luma[] =
"static const float blocksize = 8.0;\n"
"static const float4 high = float4(0.667, 0.0, 0.0, 1.0);\n"
"static const float4 low = float4(0.333, 0.0, 0.0, 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";
static D3D11_RENDER_TARGET_BLEND_DESC blend_templ[] = {
/* SOURCE */
{
TRUE,
D3D11_BLEND_ONE, D3D11_BLEND_ZERO, D3D11_BLEND_OP_ADD,
D3D11_BLEND_ONE, D3D11_BLEND_ZERO, D3D11_BLEND_OP_ADD,
D3D11_COLOR_WRITE_ENABLE_ALL
},
/* OVER */
{
TRUE,
D3D11_BLEND_SRC_ALPHA, D3D11_BLEND_INV_SRC_ALPHA, D3D11_BLEND_OP_ADD,
D3D11_BLEND_ONE, D3D11_BLEND_INV_SRC_ALPHA, D3D11_BLEND_OP_ADD,
D3D11_COLOR_WRITE_ENABLE_ALL,
},
};
/* *INDENT-ON* */
struct _GstD3D11CompositorPad
{
GstVideoAggregatorConvertPad parent;
GstD3D11Converter *convert;
gboolean position_updated;
gboolean alpha_updated;
gboolean blend_desc_updated;
ID3D11BlendState *blend;
D3D11_RENDER_TARGET_BLEND_DESC desc;
/* properties */
gint xpos;
gint ypos;
gint width;
gint height;
gdouble alpha;
GstD3D11CompositorOperator op;
GstD3D11CompositorSizingPolicy sizing_policy;
};
typedef struct
{
ID3D11PixelShader *ps;
ID3D11VertexShader *vs;
ID3D11InputLayout *layout;
ID3D11Buffer *vertex_buffer;
ID3D11Buffer *index_buffer;
D3D11_VIEWPORT viewport;
} GstD3D11CompositorQuad;
typedef struct
{
/* [rtv][colors] */
FLOAT color[4][4];
} GstD3D11CompositorClearColor;
struct _GstD3D11Compositor
{
GstVideoAggregator parent;
GstD3D11Device *device;
GstBuffer *fallback_buf;
GstD3D11CompositorQuad *checker_background;
/* black/white/transparent */
GstD3D11CompositorClearColor clear_color[3];
gboolean downstream_supports_d3d11;
/* 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_OPERATOR,
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_OPERATOR GST_D3D11_COMPOSITOR_OPERATOR_OVER
#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 * vpad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame);
#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 *object_class = G_OBJECT_CLASS (klass);
GstVideoAggregatorPadClass *vagg_pad_class =
GST_VIDEO_AGGREGATOR_PAD_CLASS (klass);
GParamFlags param_flags = (GParamFlags)
(G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS);
object_class->set_property = gst_d3d11_compositor_pad_set_property;
object_class->get_property = gst_d3d11_compositor_pad_get_property;
g_object_class_install_property (object_class, PROP_PAD_XPOS,
g_param_spec_int ("xpos", "X Position", "X position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_XPOS, param_flags));
g_object_class_install_property (object_class, PROP_PAD_YPOS,
g_param_spec_int ("ypos", "Y Position", "Y position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_YPOS, param_flags));
g_object_class_install_property (object_class, PROP_PAD_WIDTH,
g_param_spec_int ("width", "Width", "Width of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_WIDTH, param_flags));
g_object_class_install_property (object_class, PROP_PAD_HEIGHT,
g_param_spec_int ("height", "Height", "Height of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_HEIGHT, param_flags));
g_object_class_install_property (object_class, PROP_PAD_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_PAD_ALPHA, param_flags));
g_object_class_install_property (object_class, PROP_PAD_OPERATOR,
g_param_spec_enum ("operator", "Operator",
"Blending operator to use for blending this pad over the previous ones",
GST_TYPE_D3D11_COMPOSITOR_OPERATOR, DEFAULT_PAD_OPERATOR,
param_flags));
g_object_class_install_property (object_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,
param_flags));
vagg_pad_class->prepare_frame =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_prepare_frame);
vagg_pad_class->clean_frame =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_clean_frame);
gst_type_mark_as_plugin_api (GST_TYPE_D3D11_COMPOSITOR_OPERATOR,
(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->op = DEFAULT_PAD_OPERATOR;
pad->sizing_policy = DEFAULT_PAD_SIZING_POLICY;
pad->desc = blend_templ[DEFAULT_PAD_OPERATOR];
}
static void
gst_d3d11_compositor_pad_update_position (GstD3D11CompositorPad * self,
gint * old, const GValue * value)
{
gint tmp = g_value_get_int (value);
if (*old != tmp) {
*old = tmp;
self->position_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:
gst_d3d11_compositor_pad_update_position (pad, &pad->xpos, value);
break;
case PROP_PAD_YPOS:
gst_d3d11_compositor_pad_update_position (pad, &pad->ypos, value);
break;
case PROP_PAD_WIDTH:
gst_d3d11_compositor_pad_update_position (pad, &pad->width, value);
break;
case PROP_PAD_HEIGHT:
gst_d3d11_compositor_pad_update_position (pad, &pad->height, value);
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_OPERATOR:{
GstD3D11CompositorOperator op =
(GstD3D11CompositorOperator) g_value_get_enum (value);
if (op != pad->op) {
pad->op = op;
pad->desc = blend_templ[op];
pad->blend_desc_updated = TRUE;
}
break;
}
case PROP_PAD_SIZING_POLICY:{
GstD3D11CompositorSizingPolicy policy =
(GstD3D11CompositorSizingPolicy) g_value_get_enum (value);
if (pad->sizing_policy != policy) {
pad->sizing_policy = policy;
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_OPERATOR:
g_value_set_enum (value, pad->op);
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_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)
{
/* Skip this frame */
if (gst_d3d11_compositor_pad_check_frame_obscured (pad, vagg))
return TRUE;
/* don't map/upload now, it will happen in converter object.
* Just mark this frame is preparted instead */
prepared_frame->buffer = buffer;
return TRUE;
}
static void
gst_d3d11_compositor_pad_clean_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame)
{
memset (prepared_frame, 0, sizeof (GstVideoFrame));
}
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);
gint width, height;
GstVideoInfo *info = &vagg->info;
GstVideoRectangle frame_rect;
gboolean is_first = FALSE;
gboolean output_has_alpha_comp = FALSE;
gint x_offset, y_offset;
#ifndef GST_DISABLE_GST_DEBUG
guint zorder = 0;
#endif
static const D3D11_RENDER_TARGET_BLEND_DESC blend_over_no_alpha = {
TRUE,
D3D11_BLEND_BLEND_FACTOR, D3D11_BLEND_INV_BLEND_FACTOR, D3D11_BLEND_OP_ADD,
D3D11_BLEND_BLEND_FACTOR, D3D11_BLEND_INV_BLEND_FACTOR, D3D11_BLEND_OP_ADD,
D3D11_COLOR_WRITE_ENABLE_ALL,
};
if (GST_VIDEO_INFO_HAS_ALPHA (info) ||
GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_BGRx ||
GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_RGBx) {
output_has_alpha_comp = TRUE;
}
if (!cpad->convert) {
cpad->convert = gst_d3d11_converter_new (self->device, &pad->info, info,
nullptr);
if (!cpad->convert) {
GST_ERROR_OBJECT (pad, "Couldn't create converter");
return FALSE;
}
if (output_has_alpha_comp)
g_object_set (cpad->convert, "alpha", cpad->alpha, nullptr);
is_first = TRUE;
}
if (cpad->alpha_updated) {
if (output_has_alpha_comp) {
g_object_set (cpad->convert, "alpha", cpad->alpha, nullptr);
} else {
gfloat blend_factor = cpad->alpha;
g_object_set (cpad->convert,
"blend-factor-red", blend_factor,
"blend-factor-green", blend_factor,
"blend-factor-blue", blend_factor,
"blend-factor-alpha", blend_factor, nullptr);
}
cpad->alpha_updated = FALSE;
}
if (!cpad->blend || cpad->blend_desc_updated) {
HRESULT hr;
D3D11_BLEND_DESC desc = { 0, };
ID3D11BlendState *blend = nullptr;
ID3D11Device *device_handle =
gst_d3d11_device_get_device_handle (self->device);
gfloat blend_factor = 1.0f;
GST_D3D11_CLEAR_COM (cpad->blend);
desc.AlphaToCoverageEnable = FALSE;
desc.IndependentBlendEnable = FALSE;
desc.RenderTarget[0] = cpad->desc;
if (!output_has_alpha_comp &&
cpad->op == GST_D3D11_COMPOSITOR_OPERATOR_OVER) {
desc.RenderTarget[0] = blend_over_no_alpha;
blend_factor = cpad->alpha;
}
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;
g_object_set (cpad->convert, "blend-state", blend,
"blend-factor-red", blend_factor,
"blend-factor-green", blend_factor,
"blend-factor-blue", blend_factor,
"blend-factor-alpha", blend_factor, nullptr);
cpad->blend_desc_updated = FALSE;
}
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));
#ifndef GST_DISABLE_GST_DEBUG
g_object_get (pad, "zorder", &zorder, nullptr);
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-{x,y,width,height} %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),
frame_rect.x, frame_rect.y, frame_rect.w, frame_rect.h);
#endif
cpad->position_updated = FALSE;
g_object_set (cpad->convert, "dest-x", frame_rect.x,
"dest-y", frame_rect.y, "dest-width", frame_rect.w,
"dest-height", frame_rect.h, nullptr);
return TRUE;
}
static GstStaticCaps sink_pad_template_caps =
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, GST_D3D11_SINK_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (GST_D3D11_SINK_FORMATS));
/* formats we can output without conversion.
* Excludes 10/12 bits planar YUV (needs bitshift) and
* AYUV/AYUV64 (d3d11 runtime does not understand the ayuv order) */
#define COMPOSITOR_SRC_FORMATS \
"{ RGBA64_LE, RGB10A2_LE, BGRA, RGBA, BGRx, RGBx, VUYA, NV12, NV21, " \
"P010_10LE, P012_LE, P016_LE, I420, YV12, Y42B, Y444, Y444_16LE, " \
"GRAY8, GRAY16_LE }"
static GstStaticCaps src_pad_template_caps =
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, COMPOSITOR_SRC_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (COMPOSITOR_SRC_FORMATS));
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 * agg);
static gboolean gst_d3d11_compositor_stop (GstAggregator * agg);
static gboolean gst_d3d11_compositor_sink_query (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * query);
static gboolean gst_d3d11_compositor_src_query (GstAggregator * agg,
GstQuery * query);
static GstCaps *gst_d3d11_compositor_fixate_src_caps (GstAggregator * agg,
GstCaps * caps);
static gboolean gst_d3d11_compositor_negotiated_src_caps (GstAggregator * agg,
GstCaps * caps);
static gboolean
gst_d3d11_compositor_propose_allocation (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query);
static gboolean gst_d3d11_compositor_decide_allocation (GstAggregator * agg,
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);
static void gst_d3d11_compositor_quad_free (GstD3D11CompositorQuad * quad);
#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 *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAggregatorClass *agg_class = GST_AGGREGATOR_CLASS (klass);
GstVideoAggregatorClass *vagg_class = GST_VIDEO_AGGREGATOR_CLASS (klass);
GstCaps *caps;
object_class->dispose = gst_d3d11_compositor_dispose;
object_class->set_property = gst_d3d11_compositor_set_property;
object_class->get_property = gst_d3d11_compositor_get_property;
g_object_class_install_property (object_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 (object_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);
agg_class->start = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_start);
agg_class->stop = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_stop);
agg_class->sink_query = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_sink_query);
agg_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_src_query);
agg_class->fixate_src_caps =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_fixate_src_caps);
agg_class->negotiated_src_caps =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_negotiated_src_caps);
agg_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_d3d11_compositor_propose_allocation);
agg_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 (&sink_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_caps_unref (caps);
caps = gst_d3d11_get_updated_template_caps (&src_pad_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_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);
GST_DEBUG_CATEGORY_INIT (gst_d3d11_compositor_debug,
"d3d11compositor", 0, "d3d11compositor element");
}
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);
g_clear_pointer (&self->checker_background, gst_d3d11_compositor_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 = nullptr;
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) {
GST_DEBUG_OBJECT (element, "could not create/add pad");
return nullptr;
}
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;
}
static gboolean
gst_d3d11_compositor_pad_clear_resource (GstD3D11Compositor * self,
GstD3D11CompositorPad * cpad, gpointer user_data)
{
gst_clear_object (&cpad->convert);
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, nullptr);
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 * agg)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
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 (agg);
}
static gboolean
gst_d3d11_compositor_stop (GstAggregator * agg)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
g_clear_pointer (&self->checker_background, gst_d3d11_compositor_quad_free);
gst_clear_object (&self->device);
return GST_AGGREGATOR_CLASS (parent_class)->stop (agg);
}
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 == nullptr) {
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 * agg,
GstAggregatorPad * pad, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (agg), query,
self->device)) {
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 (agg, pad, query);
}
static gboolean
gst_d3d11_compositor_src_query (GstAggregator * agg, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d11_handle_context_query (GST_ELEMENT (agg), query,
self->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_AGGREGATOR_CLASS (parent_class)->src_query (agg, query);
}
static GstCaps *
gst_d3d11_compositor_fixate_src_caps (GstAggregator * agg, GstCaps * caps)
{
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (agg);
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 = nullptr;
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 (agg, "Fixated caps %" GST_PTR_FORMAT, ret);
return ret;
}
static void
convert_info_gray_to_yuv (const GstVideoInfo * gray, GstVideoInfo * yuv)
{
GstVideoInfo tmp;
if (GST_VIDEO_INFO_IS_YUV (gray)) {
*yuv = *gray;
return;
}
if (gray->finfo->depth[0] == 8) {
gst_video_info_set_format (&tmp,
GST_VIDEO_FORMAT_Y444, gray->width, gray->height);
} else {
gst_video_info_set_format (&tmp,
GST_VIDEO_FORMAT_Y444_16LE, gray->width, gray->height);
}
tmp.colorimetry.range = gray->colorimetry.range;
if (tmp.colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN)
tmp.colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
tmp.colorimetry.primaries = gray->colorimetry.primaries;
if (tmp.colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN)
tmp.colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT709;
tmp.colorimetry.transfer = gray->colorimetry.transfer;
if (tmp.colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN)
tmp.colorimetry.transfer = GST_VIDEO_TRANSFER_BT709;
tmp.colorimetry.matrix = gray->colorimetry.matrix;
if (tmp.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN)
tmp.colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709;
*yuv = tmp;
}
static void
gst_d3d11_compositor_calculate_background_color (GstD3D11Compositor * self,
const GstVideoInfo * info)
{
GstD3D11ColorMatrix clear_color_matrix;
gdouble rgb[3];
gdouble converted[3];
GstVideoFormat format = GST_VIDEO_INFO_FORMAT (info);
if (GST_VIDEO_INFO_IS_RGB (info)) {
GstVideoInfo rgb_info = *info;
rgb_info.colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255;
gst_d3d11_color_range_adjust_matrix_unorm (&rgb_info, info,
&clear_color_matrix);
} else {
GstVideoInfo rgb_info;
GstVideoInfo yuv_info;
gst_video_info_set_format (&rgb_info, GST_VIDEO_FORMAT_RGBA64_LE,
info->width, info->height);
convert_info_gray_to_yuv (info, &yuv_info);
if (yuv_info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN ||
yuv_info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_RGB) {
GST_WARNING_OBJECT (self, "Invalid matrix is detected");
yuv_info.colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709;
}
gst_d3d11_rgb_to_yuv_matrix_unorm (&rgb_info,
&yuv_info, &clear_color_matrix);
}
/* Calculate black and white color values */
for (guint i = 0; i < 2; i++) {
GstD3D11CompositorClearColor *clear_color = &self->clear_color[i];
rgb[0] = rgb[1] = rgb[2] = (gdouble) i;
for (guint j = 0; j < 3; j++) {
converted[j] = 0;
for (guint k = 0; k < 3; k++) {
converted[j] += clear_color_matrix.matrix[j][k] * rgb[k];
}
converted[j] += clear_color_matrix.offset[j];
converted[j] = CLAMP (converted[j],
clear_color_matrix.min[j], clear_color_matrix.max[j]);
}
GST_DEBUG_OBJECT (self, "Calculated background color RGB: %f, %f, %f",
converted[0], converted[1], converted[2]);
if (GST_VIDEO_INFO_IS_RGB (info) || GST_VIDEO_INFO_IS_GRAY (info)) {
for (guint j = 0; j < 3; j++)
clear_color->color[0][j] = converted[j];
clear_color->color[0][3] = 1.0;
} else {
switch (format) {
case GST_VIDEO_FORMAT_VUYA:
clear_color->color[0][0] = converted[2];
clear_color->color[0][1] = converted[1];
clear_color->color[0][2] = converted[0];
clear_color->color[0][3] = 1.0;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
case GST_VIDEO_FORMAT_P010_10LE:
case GST_VIDEO_FORMAT_P012_LE:
case GST_VIDEO_FORMAT_P016_LE:
clear_color->color[0][0] = converted[0];
clear_color->color[0][1] = 0;
clear_color->color[0][2] = 0;
clear_color->color[0][3] = 1.0;
if (format == GST_VIDEO_FORMAT_NV21) {
clear_color->color[1][0] = converted[2];
clear_color->color[1][1] = converted[1];
} else {
clear_color->color[1][0] = converted[1];
clear_color->color[1][1] = converted[2];
}
clear_color->color[1][2] = 0;
clear_color->color[1][3] = 1.0;
break;
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_I420_10LE:
case GST_VIDEO_FORMAT_I420_12LE:
case GST_VIDEO_FORMAT_Y42B:
case GST_VIDEO_FORMAT_I422_10LE:
case GST_VIDEO_FORMAT_I422_12LE:
case GST_VIDEO_FORMAT_Y444:
case GST_VIDEO_FORMAT_Y444_10LE:
case GST_VIDEO_FORMAT_Y444_12LE:
case GST_VIDEO_FORMAT_Y444_16LE:
clear_color->color[0][0] = converted[0];
clear_color->color[0][1] = 0;
clear_color->color[0][2] = 0;
clear_color->color[0][3] = 1.0;
if (format == GST_VIDEO_FORMAT_YV12) {
clear_color->color[1][0] = converted[2];
clear_color->color[2][0] = converted[1];
} else {
clear_color->color[1][0] = converted[1];
clear_color->color[2][0] = converted[2];
}
clear_color->color[1][1] = 0;
clear_color->color[1][2] = 0;
clear_color->color[1][3] = 1.0;
clear_color->color[2][1] = 0;
clear_color->color[2][2] = 0;
clear_color->color[2][3] = 1.0;
break;
default:
g_assert_not_reached ();
break;
}
}
}
}
static gboolean
gst_d3d11_compositor_negotiated_src_caps (GstAggregator * agg, GstCaps * caps)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
GstCapsFeatures *features;
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps)) {
GST_ERROR_OBJECT (self, "Failed to convert caps to info");
return FALSE;
}
features = gst_caps_get_features (caps, 0);
if (features
&& gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY)) {
GST_DEBUG_OBJECT (self, "Negotiated with D3D11 memory caps");
self->downstream_supports_d3d11 = TRUE;
} else {
GST_DEBUG_OBJECT (self, "Negotiated with system memory caps");
self->downstream_supports_d3d11 = FALSE;
}
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (self),
(GstElementForeachPadFunc) gst_d3d11_compositor_pad_clear_resource,
nullptr);
gst_clear_buffer (&self->fallback_buf);
g_clear_pointer (&self->checker_background, gst_d3d11_compositor_quad_free);
gst_d3d11_compositor_calculate_background_color (self, &info);
if (!self->downstream_supports_d3d11) {
GstD3D11AllocationParams *d3d11_params;
GstBufferPool *pool;
GstFlowReturn flow_ret;
d3d11_params = gst_d3d11_allocation_params_new (self->device,
&info, GST_D3D11_ALLOCATION_FLAG_DEFAULT,
D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET, 0);
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 pool");
return FALSE;
}
if (!gst_buffer_pool_set_active (pool, TRUE)) {
GST_ERROR_OBJECT (self, "Failed to set active");
gst_object_unref (pool);
return FALSE;
}
flow_ret = gst_buffer_pool_acquire_buffer (pool, &self->fallback_buf,
nullptr);
if (flow_ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Failed to acquire buffer");
gst_object_unref (pool);
return FALSE;
}
gst_buffer_pool_set_active (pool, FALSE);
gst_object_unref (pool);
}
return GST_AGGREGATOR_CLASS (parent_class)->negotiated_src_caps (agg, caps);
}
static gboolean
gst_d3d11_compositor_propose_allocation (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
GstVideoInfo info;
GstBufferPool *pool;
GstCaps *caps;
guint size;
gst_query_parse_allocation (query, &caps, nullptr);
if (caps == nullptr)
return FALSE;
if (!gst_video_info_from_caps (&info, caps))
return FALSE;
if (gst_query_get_n_allocation_pools (query) == 0) {
GstCapsFeatures *features;
GstStructure *config;
gboolean is_d3d11 = FALSE;
features = gst_caps_get_features (caps, 0);
if (features
&& gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY)) {
GST_DEBUG_OBJECT (pad, "upstream support d3d11 memory");
pool = gst_d3d11_buffer_pool_new (self->device);
is_d3d11 = TRUE;
} else {
pool = gst_video_buffer_pool_new ();
}
if (!pool) {
GST_ERROR_OBJECT (self, "Failed to create buffer pool");
return FALSE;
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
size = GST_VIDEO_INFO_SIZE (&info);
if (is_d3d11) {
GstD3D11AllocationParams *d3d11_params;
d3d11_params =
gst_d3d11_allocation_params_new (self->device,
&info, GST_D3D11_ALLOCATION_FLAG_DEFAULT, D3D11_BIND_SHADER_RESOURCE,
0);
gst_buffer_pool_config_set_d3d11_allocation_params (config, d3d11_params);
gst_d3d11_allocation_params_free (d3d11_params);
} else {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
}
gst_buffer_pool_config_set_params (config, caps, (guint) size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (pool, "Couldn't set config");
gst_object_unref (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, nullptr);
return TRUE;
}
static gboolean
gst_d3d11_compositor_decide_allocation (GstAggregator * agg, GstQuery * query)
{
GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (agg);
GstCaps *caps;
GstBufferPool *pool = nullptr;
guint n, size, min, max;
GstVideoInfo info;
GstStructure *config;
gboolean use_d3d11_pool;
gst_query_parse_allocation (query, &caps, nullptr);
if (!caps) {
GST_DEBUG_OBJECT (self, "No output caps");
return FALSE;
}
if (!gst_video_info_from_caps (&info, caps)) {
GST_ERROR_OBJECT (self, "Invalid caps");
return FALSE;
}
use_d3d11_pool = self->downstream_supports_d3d11;
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 && use_d3d11_pool) {
if (!GST_IS_D3D11_BUFFER_POOL (pool)) {
GST_DEBUG_OBJECT (self,
"Downstream pool is not d3d11, will create new one");
gst_clear_object (&pool);
} else {
GstD3D11BufferPool *dpool = GST_D3D11_BUFFER_POOL (pool);
if (dpool->device != self->device) {
GST_DEBUG_OBJECT (self, "Different device, will create new one");
gst_clear_object (&pool);
}
}
}
size = (guint) info.size;
if (!pool) {
if (use_d3d11_pool)
pool = gst_d3d11_buffer_pool_new (self->device);
else
pool = gst_video_buffer_pool_new ();
min = 0;
max = 0;
}
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);
if (use_d3d11_pool) {
GstD3D11AllocationParams *d3d11_params;
d3d11_params = gst_buffer_pool_config_get_d3d11_allocation_params (config);
if (!d3d11_params) {
d3d11_params = gst_d3d11_allocation_params_new (self->device,
&info, GST_D3D11_ALLOCATION_FLAG_DEFAULT, D3D11_BIND_RENDER_TARGET,
0);
} 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);
return TRUE;
}
typedef struct
{
struct
{
FLOAT x;
FLOAT y;
FLOAT z;
} position;
struct
{
FLOAT u;
FLOAT v;
} texture;
} VertexData;
static GstD3D11CompositorQuad *
gst_d3d11_compositor_create_checker_quad (GstD3D11Compositor * self,
const GstVideoInfo * info)
{
GstD3D11CompositorQuad *quad = nullptr;
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;
ComPtr < ID3D11Buffer > vertex_buffer;
ComPtr < ID3D11Buffer > index_buffer;
ComPtr < ID3D11PixelShader > ps;
ComPtr < ID3D11VertexShader > vs;
ComPtr < ID3D11InputLayout > layout;
HRESULT hr;
const gchar *ps_src;
device_handle = gst_d3d11_device_get_device_handle (self->device);
context_handle = gst_d3d11_device_get_device_context_handle (self->device);
if (GST_VIDEO_INFO_IS_RGB (info)) {
ps_src = checker_ps_src_rgb;
} else if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_VUYA) {
ps_src = checker_ps_src_vuya;
} else {
ps_src = checker_ps_src_luma;
}
hr = gst_d3d11_create_pixel_shader_simple (self->device, ps_src, "main", &ps);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't setup pixel shader");
return nullptr;
}
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;
hr = gst_d3d11_create_vertex_shader_simple (self->device, checker_vs_src,
"main", &input_desc, 1, &vs, &layout);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't setup vertex shader");
return nullptr;
}
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, nullptr, &vertex_buffer);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self,
"Couldn't create vertex buffer, hr: 0x%x", (guint) hr);
return nullptr;
}
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 nullptr;
}
vertex_data = (VertexData *) map.pData;
/* 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, nullptr, &index_buffer);
if (!gst_d3d11_result (hr, self->device)) {
GST_ERROR_OBJECT (self,
"Couldn't create index buffer, hr: 0x%x", (guint) hr);
return nullptr;
}
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 nullptr;
}
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 = g_new0 (GstD3D11CompositorQuad, 1);
quad->ps = ps.Detach ();
quad->vs = vs.Detach ();
quad->layout = layout.Detach ();
quad->vertex_buffer = vertex_buffer.Detach ();
quad->index_buffer = index_buffer.Detach ();
quad->viewport.TopLeftX = 0;
quad->viewport.TopLeftY = 0;
quad->viewport.Width = GST_VIDEO_INFO_WIDTH (info);
quad->viewport.Height = GST_VIDEO_INFO_HEIGHT (info);
quad->viewport.MinDepth = 0.0f;
quad->viewport.MaxDepth = 1.0f;
return quad;
}
static void
gst_d3d11_compositor_quad_free (GstD3D11CompositorQuad * quad)
{
if (!quad)
return;
GST_D3D11_CLEAR_COM (quad->ps);
GST_D3D11_CLEAR_COM (quad->vs);
GST_D3D11_CLEAR_COM (quad->layout);
GST_D3D11_CLEAR_COM (quad->vertex_buffer);
GST_D3D11_CLEAR_COM (quad->index_buffer);
g_free (quad);
}
static gboolean
gst_d3d11_compositor_draw_background_checker (GstD3D11Compositor * self,
ID3D11RenderTargetView * rtv)
{
ID3D11DeviceContext *context =
gst_d3d11_device_get_device_context_handle (self->device);
UINT offsets = 0;
UINT strides = sizeof (VertexData);
GstD3D11CompositorQuad *quad;
if (!self->checker_background) {
GstVideoInfo *info = &GST_VIDEO_AGGREGATOR_CAST (self)->info;
self->checker_background =
gst_d3d11_compositor_create_checker_quad (self, info);
if (!self->checker_background)
return FALSE;
}
quad = self->checker_background;
context->IASetPrimitiveTopology (D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
context->IASetInputLayout (quad->layout);
context->IASetVertexBuffers (0, 1, &quad->vertex_buffer, &strides, &offsets);
context->IASetIndexBuffer (quad->index_buffer, DXGI_FORMAT_R16_UINT, 0);
context->VSSetShader (quad->vs, nullptr, 0);
context->PSSetShader (quad->ps, nullptr, 0);
context->RSSetViewports (1, &quad->viewport);
context->OMSetRenderTargets (1, &rtv, nullptr);
context->OMSetBlendState (nullptr, nullptr, 0xffffffff);
context->DrawIndexed (6, 0, 0);
context->OMSetRenderTargets (0, nullptr, nullptr);
return TRUE;
}
/* Must be called with d3d11 device lock */
static gboolean
gst_d3d11_compositor_draw_background (GstD3D11Compositor * self,
ID3D11RenderTargetView * rtv[GST_VIDEO_MAX_PLANES], guint num_rtv)
{
ID3D11DeviceContext *context =
gst_d3d11_device_get_device_context_handle (self->device);
GstD3D11CompositorClearColor *color = &self->clear_color[0];
if (self->background == GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER) {
if (!gst_d3d11_compositor_draw_background_checker (self, rtv[0]))
return FALSE;
/* clear U and V components if needed */
for (guint i = 1; i < num_rtv; i++)
context->ClearRenderTargetView (rtv[i], color->color[i]);
return TRUE;
}
switch (self->background) {
case GST_D3D11_COMPOSITOR_BACKGROUND_BLACK:
color = &self->clear_color[0];
break;
case GST_D3D11_COMPOSITOR_BACKGROUND_WHITE:
color = &self->clear_color[1];
break;
case GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT:
color = &self->clear_color[2];
break;
default:
g_assert_not_reached ();
return FALSE;
}
for (guint i = 0; i < num_rtv; i++)
context->ClearRenderTargetView (rtv[i], color->color[i]);
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;
GstFlowReturn ret = GST_FLOW_OK;
ID3D11RenderTargetView *rtv[GST_VIDEO_MAX_PLANES] = { nullptr, };
GstVideoFrame target_frame;
guint num_rtv = GST_VIDEO_INFO_N_PLANES (&vagg->info);
GstD3D11DeviceLockGuard lk (self->device);
if (!self->downstream_supports_d3d11)
target_buf = self->fallback_buf;
if (!gst_video_frame_map (&target_frame, &vagg->info, target_buf,
(GstMapFlags) (GST_MAP_WRITE | GST_MAP_D3D11))) {
GST_ERROR_OBJECT (self, "Failed to map render target frame");
return GST_FLOW_ERROR;
}
if (!gst_d3d11_buffer_get_render_target_view (target_buf, rtv)) {
GST_ERROR_OBJECT (self, "RTV is unavailable");
gst_video_frame_unmap (&target_frame);
return GST_FLOW_ERROR;
}
if (!gst_d3d11_compositor_draw_background (self, rtv, num_rtv)) {
GST_ERROR_OBJECT (self, "Couldn't draw background");
gst_video_frame_unmap (&target_frame);
return GST_FLOW_ERROR;
}
gst_video_frame_unmap (&target_frame);
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);
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;
}
if (!gst_d3d11_converter_convert_buffer_unlocked (cpad->convert,
prepared_frame->buffer, target_buf)) {
GST_ERROR_OBJECT (self, "Couldn't convert frame");
ret = GST_FLOW_ERROR;
break;
}
}
GST_OBJECT_UNLOCK (self);
if (ret != GST_FLOW_OK)
return ret;
if (!self->downstream_supports_d3d11) {
if (!gst_d3d11_buffer_copy_into (outbuf, self->fallback_buf, &vagg->info)) {
GST_ERROR_OBJECT (self, "Couldn't copy input buffer to fallback buffer");
return GST_FLOW_ERROR;
}
}
return GST_FLOW_OK;
}
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);
if (!gst_is_d3d11_memory (mem))
return TRUE;
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, nullptr);
/* 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 = nullptr;
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) {
return
GST_VIDEO_AGGREGATOR_CLASS (parent_class)->create_output_buffer (vagg,
outbuffer);
}
/* Clear all device dependent resources */
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (vagg),
(GstElementForeachPadFunc) gst_d3d11_compositor_pad_clear_resource,
nullptr);
gst_clear_buffer (&self->fallback_buf);
g_clear_pointer (&self->checker_background, gst_d3d11_compositor_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;
}
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