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gstreamer/subprojects/gst-plugins-bad/sys/d3d11/gstd3d11compositor.cpp
Seungha Yang 0d9f08ce9a d3d11compositor: Skip zero alpha input 
Blending such input is a waste of resource since nothing will
be rendered

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4456>
2023-04-21 17:27:49 +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-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 "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;
/**
* GstD3D11CompositorOperator:
*
* Since: 1.22
*/
#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;
gboolean config_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;
GstVideoGammaMode gamma_mode;
GstVideoPrimariesMode primaries_mode;
};
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;
GstCaps *negotiated_caps;
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,
PROP_PAD_GAMMA_MODE,
PROP_PAD_PRIMARIES_MODE,
};
#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
#define DEFAULT_PAD_GAMMA_MODE GST_VIDEO_GAMMA_MODE_NONE
#define DEFAULT_PAD_PRIMARIES_MODE GST_VIDEO_PRIMARIES_MODE_NONE
static void gst_d3d11_compositor_pad_dispose (GObject * object);
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->dispose = gst_d3d11_compositor_pad_dispose;
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));
/**
* GstD3D11CompositorPad:operator:
*
* Blending operator to use for blending this pad over the previous ones
*
* Since: 1.22
*/
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));
/**
* GstD3D11CompositorPad:gamma-mode:
*
* Gamma conversion mode
*
* Since: 1.22
*/
g_object_class_install_property (object_class, PROP_PAD_GAMMA_MODE,
g_param_spec_enum ("gamma-mode", "Gamma mode",
"Gamma conversion mode", GST_TYPE_VIDEO_GAMMA_MODE,
DEFAULT_PAD_GAMMA_MODE, param_flags));
/**
* GstD3D11CompositorPad:primaries-mode:
*
* Primaries conversion mode
*
* Since: 1.22
*/
g_object_class_install_property (object_class, PROP_PAD_PRIMARIES_MODE,
g_param_spec_enum ("primaries-mode", "Primaries Mode",
"Primaries conversion mode", GST_TYPE_VIDEO_PRIMARIES_MODE,
DEFAULT_PAD_PRIMARIES_MODE, 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];
pad->gamma_mode = DEFAULT_PAD_GAMMA_MODE;
pad->primaries_mode = DEFAULT_PAD_PRIMARIES_MODE;
}
static void
gst_d3d11_compositor_pad_dispose (GObject * object)
{
GstD3D11CompositorPad *self = GST_D3D11_COMPOSITOR_PAD (object);
gst_clear_object (&self->convert);
GST_D3D11_CLEAR_COM (self->blend);
G_OBJECT_CLASS (parent_pad_class)->dispose (object);
}
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;
}
case PROP_PAD_GAMMA_MODE:{
GstVideoGammaMode mode = (GstVideoGammaMode) g_value_get_enum (value);
if (pad->gamma_mode != mode) {
pad->gamma_mode = mode;
pad->config_updated = TRUE;
}
break;
}
case PROP_PAD_PRIMARIES_MODE:{
GstVideoPrimariesMode mode =
(GstVideoPrimariesMode) g_value_get_enum (value);
if (pad->primaries_mode != mode) {
pad->primaries_mode = mode;
pad->config_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;
case PROP_PAD_GAMMA_MODE:
g_value_set_enum (value, pad->gamma_mode);
break;
case PROP_PAD_PRIMARIES_MODE:
g_value_set_enum (value, pad->primaries_mode);
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)
*/
if (cpad->alpha == 0)
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));
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->config_updated) {
gst_clear_object (&cpad->convert);
cpad->config_updated = FALSE;
}
if (!cpad->convert) {
GstStructure *config = gst_structure_new ("converter-config",
/* XXX: Always use shader, to workaround buggy blending behavior of
* vendor implemented converter. Need investigation */
GST_D3D11_CONVERTER_OPT_BACKEND, GST_TYPE_D3D11_CONVERTER_BACKEND,
GST_D3D11_CONVERTER_BACKEND_SHADER,
GST_D3D11_CONVERTER_OPT_GAMMA_MODE,
GST_TYPE_VIDEO_GAMMA_MODE, cpad->gamma_mode,
GST_D3D11_CONVERTER_OPT_PRIMARIES_MODE,
GST_TYPE_VIDEO_PRIMARIES_MODE, cpad->primaries_mode, nullptr);
cpad->convert = gst_d3d11_converter_new (self->device, &pad->info, info,
config);
if (!cpad->convert) {
GST_ERROR_OBJECT (pad, "Couldn't create converter");
return FALSE;
}
is_first = TRUE;
}
if (cpad->alpha_updated || is_first) {
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 || is_first) {
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);
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_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);
gst_clear_caps (&self->negotiated_caps);
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;
}
if (self->negotiated_caps && gst_caps_is_equal (self->negotiated_caps, caps)) {
GST_DEBUG_OBJECT (self, "Negotiated caps is not changed");
goto done;
}
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);
}
gst_caps_replace (&self->negotiated_caps, caps);
done:
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);
gst_query_add_allocation_meta (query, GST_VIDEO_CROP_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);
gint x, y, w, h;
GstVideoCropMeta *crop_meta;
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;
}
crop_meta = gst_buffer_get_video_crop_meta (prepared_frame->buffer);
if (crop_meta) {
x = crop_meta->x;
y = crop_meta->y;
w = crop_meta->width;
h = crop_meta->height;
} else {
x = y = 0;
w = pad->info.width;
h = pad->info.height;
}
g_object_set (cpad->convert, "src-x", x, "src-y", y, "src-width", w,
"src-height", h, nullptr);
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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