/* * GStreamer * Copyright (C) 2004, 2008 Wim Taymans * Copyright (C) 2010 Sebastian Dröge * Copyright (C) 2014 Mathieu Duponchelle * Copyright (C) 2014 Thibault Saunier * Copyright (C) 2020 Seungha Yang * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstd3d11_fwd.h" #include "gstd3d11compositor.h" #include "gstd3d11device.h" #include "gstd3d11memory.h" #include "gstd3d11bufferpool.h" #include "gstd3d11utils.h" #include "gstd3d11format.h" #include "gstd3d11colorconverter.h" #include "gstd3d11shader.h" #include GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_compositor_debug); #define GST_CAT_DEFAULT gst_d3d11_compositor_debug /** * GstD3D11CompositorBlendOperation: * @GST_D3D11_COMPOSITOR_BLEND_OP_ADD: * Add source 1 and source 2 * @GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT: * Subtract source 1 from source 2 * @GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT: * Subtract source 2 from source 1 * @GST_D3D11_COMPOSITOR_BLEND_OP_MIN: * Find the minimum of source 1 and source 2 * @GST_D3D11_COMPOSITOR_BLEND_OP_MAX: * Find the maximum of source 1 and source 2 */ GType gst_d3d11_compositor_blend_operation_get_type (void) { static GType blend_operation_type = 0; static const GEnumValue blend_operator[] = { {GST_D3D11_COMPOSITOR_BLEND_OP_ADD, "Add source and background", "add"}, {GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT, "Subtract source from background", "subtract"}, {GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT, "Subtract background from source", "rev-subtract"}, {GST_D3D11_COMPOSITOR_BLEND_OP_MIN, "Minimum of source and background", "min"}, {GST_D3D11_COMPOSITOR_BLEND_OP_MAX, "Maximum of source and background", "max"}, {0, NULL, NULL}, }; if (!blend_operation_type) { blend_operation_type = g_enum_register_static ("GstD3D11CompositorBlendOperation", blend_operator); } return blend_operation_type; } static GstD3D11CompositorBlendOperation gst_d3d11_compositor_blend_operation_from_native (D3D11_BLEND_OP blend_op) { switch (blend_op) { case D3D11_BLEND_OP_ADD: return GST_D3D11_COMPOSITOR_BLEND_OP_ADD; case D3D11_BLEND_OP_SUBTRACT: return GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT; case D3D11_BLEND_OP_REV_SUBTRACT: return GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT; case D3D11_BLEND_OP_MIN: return GST_D3D11_COMPOSITOR_BLEND_OP_MIN; case D3D11_BLEND_OP_MAX: return GST_D3D11_COMPOSITOR_BLEND_OP_MAX; default: g_assert_not_reached (); break; } return GST_D3D11_COMPOSITOR_BLEND_OP_ADD; } static D3D11_BLEND_OP gst_d3d11_compositor_blend_operation_to_native (GstD3D11CompositorBlendOperation op) { switch (op) { case GST_D3D11_COMPOSITOR_BLEND_OP_ADD: return D3D11_BLEND_OP_ADD; case GST_D3D11_COMPOSITOR_BLEND_OP_SUBTRACT: return D3D11_BLEND_OP_SUBTRACT; case GST_D3D11_COMPOSITOR_BLEND_OP_REV_SUBTRACT: return D3D11_BLEND_OP_REV_SUBTRACT; case GST_D3D11_COMPOSITOR_BLEND_OP_MIN: return D3D11_BLEND_OP_MIN; case GST_D3D11_COMPOSITOR_BLEND_OP_MAX: return D3D11_BLEND_OP_MAX; default: g_assert_not_reached (); break; } return D3D11_BLEND_OP_ADD; } /** * GstD3D11CompositorBlend: * @GST_D3D11_COMPOSITOR_BLEND_ZERO: * The blend factor is (0, 0, 0, 0). No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_ONE: * The blend factor is (1, 1, 1, 1). No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR: * The blend factor is (Rs, Gs, Bs, As), * that is color data (RGB) from a pixel shader. No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR: * The blend factor is (1 - Rs, 1 - Gs, 1 - Bs, 1 - As), * that is color data (RGB) from a pixel shader. * The pre-blend operation inverts the data, generating 1 - RGB. * @GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA: * The blend factor is (As, As, As, As), * that is alpha data (A) from a pixel shader. No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA: * The blend factor is ( 1 - As, 1 - As, 1 - As, 1 - As), * that is alpha data (A) from a pixel shader. * The pre-blend operation inverts the data, generating 1 - A. * @GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA: * The blend factor is (Ad, Ad, Ad, Ad), * that is alpha data from a render target. No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA: * The blend factor is (1 - Ad, 1 - Ad, 1 - Ad, 1 - Ad), * that is alpha data from a render target. * The pre-blend operation inverts the data, generating 1 - A. * @GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR: * The blend factor is (Rd, Gd, Bd, Ad), * that is color data from a render target. No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR: * The blend factor is (1 - Rd, 1 - Gd, 1 - Bd, 1 - Ad), * that is color data from a render target. * The pre-blend operation inverts the data, generating 1 - RGB. * @GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT: * The blend factor is (f, f, f, 1); where f = min(As, 1 - Ad). * The pre-blend operation clamps the data to 1 or less. * @GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR: * The blend factor is the blend factor set with * ID3D11DeviceContext::OMSetBlendState. No pre-blend operation. * @GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR: * The blend factor is the blend factor set with * ID3D11DeviceContext::OMSetBlendState. * The pre-blend operation inverts the blend factor, * generating 1 - blend_factor. */ GType gst_d3d11_compositor_blend_get_type (void) { static GType blend_type = 0; static const GEnumValue blend[] = { {GST_D3D11_COMPOSITOR_BLEND_ZERO, "The blend factor is (0, 0, 0, 0)", "zero"}, {GST_D3D11_COMPOSITOR_BLEND_ONE, "The blend factor is (1, 1, 1, 1)", "one"}, {GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR, "The blend factor is (Rs, Gs, Bs, As)", "src-color"}, {GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR, "The blend factor is (1 - Rs, 1 - Gs, 1 - Bs, 1 - As)", "inv-src-color"}, {GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA, "The blend factor is (As, As, As, As)", "src-alpha"}, {GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA, "The blend factor is (1 - As, 1 - As, 1 - As, 1 - As)", "inv-src-alpha"}, {GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA, "The blend factor is (Ad, Ad, Ad, Ad)", "dest-alpha"}, {GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA, "The blend factor is (1 - Ad, 1 - Ad, 1 - Ad, 1 - Ad)", "inv-dest-alpha"}, {GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR, "The blend factor is (Rd, Gd, Bd, Ad)", "dest-color"}, {GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR, "The blend factor is (1 - Rd, 1 - Gd, 1 - Bd, 1 - Ad)", "inv-dest-color"}, {GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT, "The blend factor is (f, f, f, 1); where f = min(As, 1 - Ad)", "src-alpha-sat"}, {GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR, "User defined blend factor", "blend-factor"}, {GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR, "Inverse of user defined blend factor", "inv-blend-factor"}, {0, NULL, NULL}, }; if (!blend_type) { blend_type = g_enum_register_static ("GstD3D11CompositorBlend", blend); } return blend_type; } static GstD3D11CompositorBlend gst_d3d11_compositor_blend_from_native (D3D11_BLEND blend) { switch (blend) { case D3D11_BLEND_ZERO: return GST_D3D11_COMPOSITOR_BLEND_ZERO; case D3D11_BLEND_ONE: return GST_D3D11_COMPOSITOR_BLEND_ONE; case D3D11_BLEND_SRC_COLOR: return GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR; case D3D11_BLEND_INV_SRC_COLOR: return GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR; case D3D11_BLEND_SRC_ALPHA: return GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA; case D3D11_BLEND_INV_SRC_ALPHA: return GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA; case D3D11_BLEND_DEST_ALPHA: return GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA; case D3D11_BLEND_INV_DEST_ALPHA: return GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA; case D3D11_BLEND_DEST_COLOR: return GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR; case D3D11_BLEND_INV_DEST_COLOR: return GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR; case D3D11_BLEND_SRC_ALPHA_SAT: return GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT; case D3D11_BLEND_BLEND_FACTOR: return GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR; case D3D11_BLEND_INV_BLEND_FACTOR: return GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR; default: g_assert_not_reached (); break; } return GST_D3D11_COMPOSITOR_BLEND_ZERO; } static D3D11_BLEND gst_d3d11_compositor_blend_to_native (GstD3D11CompositorBlend blend) { switch (blend) { case GST_D3D11_COMPOSITOR_BLEND_ZERO: return D3D11_BLEND_ZERO; case GST_D3D11_COMPOSITOR_BLEND_ONE: return D3D11_BLEND_ONE; case GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR: return D3D11_BLEND_SRC_COLOR; case GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR: return D3D11_BLEND_INV_SRC_COLOR; case GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA: return D3D11_BLEND_SRC_ALPHA; case GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA: return D3D11_BLEND_INV_SRC_ALPHA; case GST_D3D11_COMPOSITOR_BLEND_DEST_ALPHA: return D3D11_BLEND_DEST_ALPHA; case GST_D3D11_COMPOSITOR_BLEND_INV_DEST_ALPHA: return D3D11_BLEND_INV_DEST_ALPHA; case GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR: return D3D11_BLEND_DEST_COLOR; case GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR: return D3D11_BLEND_INV_DEST_COLOR; case GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA_SAT: return D3D11_BLEND_SRC_ALPHA_SAT; case GST_D3D11_COMPOSITOR_BLEND_BLEND_FACTOR: return D3D11_BLEND_BLEND_FACTOR; case GST_D3D11_COMPOSITOR_BLEND_INV_BLEND_FACTOR: return D3D11_BLEND_INV_BLEND_FACTOR; default: g_assert_not_reached (); break; } return D3D11_BLEND_ZERO; } GType gst_d3d11_compositor_background_get_type (void) { static GType compositor_background_type = 0; static const GEnumValue compositor_background[] = { {GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER, "Checker pattern", "checker"}, {GST_D3D11_COMPOSITOR_BACKGROUND_BLACK, "Black", "black"}, {GST_D3D11_COMPOSITOR_BACKGROUND_WHITE, "White", "white"}, {GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT, "Transparent Background to enable further compositing", "transparent"}, {0, NULL, NULL}, }; if (!compositor_background_type) { compositor_background_type = g_enum_register_static ("GstD3D11CompositorBackground", compositor_background); } return compositor_background_type; } /* *INDENT-OFF* */ static const gchar checker_vs_src[] = "struct VS_INPUT\n" "{\n" " float4 Position : POSITION;\n" "};\n" "\n" "struct VS_OUTPUT\n" "{\n" " float4 Position: SV_POSITION;\n" "};\n" "\n" "VS_OUTPUT main(VS_INPUT input)\n" "{\n" " return input;\n" "}\n"; static const gchar checker_ps_src[] = "static const float blocksize = 8.0;\n" "static const float4 high = float4(0.667, 0.667, 0.667, 1.0);\n" "static const float4 low = float4(0.333, 0.333, 0.333, 1.0);\n" "struct PS_INPUT\n" "{\n" " float4 Position: SV_POSITION;\n" "};\n" "struct PS_OUTPUT\n" "{\n" " float4 Plane: SV_TARGET;\n" "};\n" "PS_OUTPUT main(PS_INPUT input)\n" "{\n" " PS_OUTPUT output;\n" " if ((input.Position.x % (blocksize * 2.0)) >= blocksize) {\n" " if ((input.Position.y % (blocksize * 2.0)) >= blocksize)\n" " output.Plane = low;\n" " else\n" " output.Plane = high;\n" " } else {\n" " if ((input.Position.y % (blocksize * 2.0)) < blocksize)\n" " output.Plane = low;\n" " else\n" " output.Plane = high;\n" " }\n" " return output;\n" "}\n"; /* *INDENT-ON* */ struct _GstD3D11CompositorPad { GstVideoAggregatorConvertPad parent; GstD3D11ColorConverter *convert; GstBufferPool *fallback_pool; GstBuffer *fallback_buf; gboolean position_updated; gboolean alpha_updated; gboolean blend_desc_updated; ID3D11BlendState *blend; gboolean caps_updated; /* properties */ gint xpos; gint ypos; gint width; gint height; gdouble alpha; D3D11_RENDER_TARGET_BLEND_DESC desc; gfloat blend_factor[4]; }; struct _GstD3D11Compositor { GstVideoAggregator parent; GstD3D11Device *device; GstBufferPool *fallback_pool; GstBuffer *fallback_buf; GstD3D11Quad *checker_background; D3D11_VIEWPORT viewport; /* properties */ gint adapter; GstD3D11CompositorBackground background; }; enum { PROP_PAD_0, PROP_PAD_XPOS, PROP_PAD_YPOS, PROP_PAD_WIDTH, PROP_PAD_HEIGHT, PROP_PAD_ALPHA, PROP_PAD_BLEND_OP_RGB, PROP_PAD_BLEND_OP_ALPHA, PROP_PAD_BLEND_SRC_RGB, PROP_PAD_BLEND_SRC_ALPHA, PROP_PAD_BLEND_DEST_RGB, PROP_PAD_BLEND_DEST_ALPHA, PROP_PAD_BLEND_FACTOR_RED, PROP_PAD_BLEND_FACTOR_GREEN, PROP_PAD_BLEND_FACTOR_BLUE, PROP_PAD_BLEND_FACTOR_ALPHA, }; #define DEFAULT_PAD_XPOS 0 #define DEFAULT_PAD_YPOS 0 #define DEFAULT_PAD_WIDTH 0 #define DEFAULT_PAD_HEIGHT 0 #define DEFAULT_PAD_ALPHA 1.0 #define DEFAULT_PAD_BLEND_OP_RGB GST_D3D11_COMPOSITOR_BLEND_OP_ADD #define DEFAULT_PAD_BLEND_OP_ALPHA GST_D3D11_COMPOSITOR_BLEND_OP_ADD #define DEFAULT_PAD_BLEND_SRC_RGB GST_D3D11_COMPOSITOR_BLEND_SRC_ALPHA #define DEFAULT_PAD_BLEND_SRC_ALPHA GST_D3D11_COMPOSITOR_BLEND_ONE #define DEFAULT_PAD_BLEND_DEST_RGB GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA #define DEFAULT_PAD_BLEND_DEST_ALPHA GST_D3D11_COMPOSITOR_BLEND_INV_SRC_ALPHA static void gst_d3d11_compositor_pad_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_d3d11_compositor_pad_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_d3d11_compositor_pad_prepare_frame (GstVideoAggregatorPad * pad, GstVideoAggregator * vagg, GstBuffer * buffer, GstVideoFrame * prepared_frame); static void gst_d3d11_compositor_pad_clean_frame (GstVideoAggregatorPad * pad, GstVideoAggregator * vagg, GstVideoFrame * prepared_frame); static void gst_d3d11_compositor_pad_init_blend_options (GstD3D11CompositorPad * pad); #define gst_d3d11_compositor_pad_parent_class parent_pad_class G_DEFINE_TYPE (GstD3D11CompositorPad, gst_d3d11_compositor_pad, GST_TYPE_VIDEO_AGGREGATOR_PAD); static void gst_d3d11_compositor_pad_class_init (GstD3D11CompositorPadClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstVideoAggregatorPadClass *vaggpadclass = GST_VIDEO_AGGREGATOR_PAD_CLASS (klass); gobject_class->set_property = gst_d3d11_compositor_pad_set_property; gobject_class->get_property = gst_d3d11_compositor_pad_get_property; g_object_class_install_property (gobject_class, PROP_PAD_XPOS, g_param_spec_int ("xpos", "X Position", "X position of the picture", G_MININT, G_MAXINT, DEFAULT_PAD_XPOS, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_YPOS, g_param_spec_int ("ypos", "Y Position", "Y position of the picture", G_MININT, G_MAXINT, DEFAULT_PAD_YPOS, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_WIDTH, g_param_spec_int ("width", "Width", "Width of the picture", G_MININT, G_MAXINT, DEFAULT_PAD_WIDTH, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_HEIGHT, g_param_spec_int ("height", "Height", "Height of the picture", G_MININT, G_MAXINT, DEFAULT_PAD_HEIGHT, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_ALPHA, g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0, DEFAULT_PAD_ALPHA, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_OP_RGB, g_param_spec_enum ("blend-op-rgb", "Blend Operation RGB", "Blend equation for RGB", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION, DEFAULT_PAD_BLEND_OP_RGB, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_OP_ALPHA, g_param_spec_enum ("blend-op-alpha", "Blend Operation Alpha", "Blend equation for alpha", GST_TYPE_D3D11_COMPOSITOR_BLEND_OPERATION, DEFAULT_PAD_BLEND_OP_ALPHA, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_SRC_RGB, g_param_spec_enum ("blend-src-rgb", "Blend Source RGB", "Blend factor for source RGB", GST_TYPE_D3D11_COMPOSITOR_BLEND, DEFAULT_PAD_BLEND_SRC_RGB, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_SRC_ALPHA, g_param_spec_enum ("blend-src-alpha", "Blend Source Alpha", "Blend factor for source alpha, \"*-color\" values are not allowed", GST_TYPE_D3D11_COMPOSITOR_BLEND, DEFAULT_PAD_BLEND_SRC_ALPHA, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_DEST_RGB, g_param_spec_enum ("blend-dest-rgb", "Blend Destination RGB", "Blend factor for destination RGB", GST_TYPE_D3D11_COMPOSITOR_BLEND, DEFAULT_PAD_BLEND_DEST_RGB, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_DEST_ALPHA, g_param_spec_enum ("blend-dest-alpha", "Blend Destination Alpha", "Blend factor for destination alpha, " "\"*-color\" values are not allowed", GST_TYPE_D3D11_COMPOSITOR_BLEND, DEFAULT_PAD_BLEND_DEST_ALPHA, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_FACTOR_RED, g_param_spec_float ("blend-factor-red", "Blend Factor Red", "Blend factor for red component " "when blend type is \"blend-factor\" or \"inv-blend-factor\"", 0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_FACTOR_GREEN, g_param_spec_float ("blend-factor-green", "Blend Factor Green", "Blend factor for green component " "when blend type is \"blend-factor\" or \"inv-blend-factor\"", 0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_FACTOR_BLUE, g_param_spec_float ("blend-factor-blue", "Blend Factor Blue", "Blend factor for blue component " "when blend type is \"blend-factor\" or \"inv-blend-factor\"", 0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PAD_BLEND_FACTOR_ALPHA, g_param_spec_float ("blend-factor-alpha", "Blend Factor Alpha", "Blend factor for alpha component " "when blend type is \"blend-factor\" or \"inv-blend-factor\"", 0.0, 1.0, 1.0, G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE | G_PARAM_STATIC_STRINGS)); vaggpadclass->prepare_frame = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_prepare_frame); vaggpadclass->clean_frame = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_pad_clean_frame); } 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; gst_d3d11_compositor_pad_init_blend_options (pad); } static void gst_d3d11_compositor_pad_update_blend_function (GstD3D11CompositorPad * pad, D3D11_BLEND * value, GstD3D11CompositorBlend new_value) { D3D11_BLEND temp = gst_d3d11_compositor_blend_to_native (new_value); if (temp == *value) return; *value = temp; pad->blend_desc_updated = TRUE; } static void gst_d3d11_compositor_pad_update_blend_equation (GstD3D11CompositorPad * pad, D3D11_BLEND_OP * value, GstD3D11CompositorBlend new_value) { D3D11_BLEND_OP temp = gst_d3d11_compositor_blend_operation_to_native (new_value); if (temp == *value) return; *value = temp; pad->blend_desc_updated = TRUE; } static void gst_d3d11_compositor_pad_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstD3D11CompositorPad *pad = GST_D3D11_COMPOSITOR_PAD (object); switch (prop_id) { case PROP_PAD_XPOS: pad->xpos = g_value_get_int (value); pad->position_updated = TRUE; break; case PROP_PAD_YPOS: pad->ypos = g_value_get_int (value); pad->position_updated = TRUE; break; case PROP_PAD_WIDTH: pad->width = g_value_get_int (value); pad->position_updated = TRUE; break; case PROP_PAD_HEIGHT: pad->height = g_value_get_int (value); pad->position_updated = TRUE; break; case PROP_PAD_ALPHA: { gdouble alpha = g_value_get_double (value); if (pad->alpha != alpha) { pad->alpha_updated = TRUE; pad->alpha = alpha; } break; } case PROP_PAD_BLEND_OP_RGB: gst_d3d11_compositor_pad_update_blend_equation (pad, &pad->desc.BlendOp, g_value_get_enum (value)); break; case PROP_PAD_BLEND_OP_ALPHA: gst_d3d11_compositor_pad_update_blend_equation (pad, &pad->desc.BlendOpAlpha, g_value_get_enum (value)); break; case PROP_PAD_BLEND_SRC_RGB: gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.SrcBlend, g_value_get_enum (value)); break; case PROP_PAD_BLEND_SRC_ALPHA: { GstD3D11CompositorBlend blend = g_value_get_enum (value); if (blend == GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR) { g_warning ("%d is not allowed for %s", blend, pspec->name); } else { gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.SrcBlendAlpha, blend); } break; } case PROP_PAD_BLEND_DEST_RGB: gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.DestBlend, g_value_get_enum (value)); break; case PROP_PAD_BLEND_DEST_ALPHA: { GstD3D11CompositorBlend blend = g_value_get_enum (value); if (blend == GST_D3D11_COMPOSITOR_BLEND_SRC_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_INV_SRC_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_DEST_COLOR || blend == GST_D3D11_COMPOSITOR_BLEND_INV_DEST_COLOR) { g_warning ("%d is not allowed for %s", blend, pspec->name); } else { gst_d3d11_compositor_pad_update_blend_function (pad, &pad->desc.DestBlendAlpha, blend); } break; } case PROP_PAD_BLEND_FACTOR_RED: pad->blend_factor[0] = g_value_get_float (value); break; case PROP_PAD_BLEND_FACTOR_GREEN: pad->blend_factor[1] = g_value_get_float (value); break; case PROP_PAD_BLEND_FACTOR_BLUE: pad->blend_factor[2] = g_value_get_float (value); break; case PROP_PAD_BLEND_FACTOR_ALPHA: pad->blend_factor[3] = g_value_get_float (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_d3d11_compositor_pad_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstD3D11CompositorPad *pad = GST_D3D11_COMPOSITOR_PAD (object); switch (prop_id) { case PROP_PAD_XPOS: g_value_set_int (value, pad->xpos); break; case PROP_PAD_YPOS: g_value_set_int (value, pad->ypos); break; case PROP_PAD_WIDTH: g_value_set_int (value, pad->width); break; case PROP_PAD_HEIGHT: g_value_set_int (value, pad->height); break; case PROP_PAD_ALPHA: g_value_set_double (value, pad->alpha); break; case PROP_PAD_BLEND_OP_RGB: g_value_set_enum (value, gst_d3d11_compositor_blend_operation_from_native (pad->desc.BlendOp)); break; case PROP_PAD_BLEND_OP_ALPHA: g_value_set_enum (value, gst_d3d11_compositor_blend_operation_from_native (pad-> desc.BlendOpAlpha)); break; case PROP_PAD_BLEND_SRC_RGB: g_value_set_enum (value, gst_d3d11_compositor_blend_from_native (pad->desc.SrcBlend)); break; case PROP_PAD_BLEND_SRC_ALPHA: g_value_set_enum (value, gst_d3d11_compositor_blend_from_native (pad->desc.SrcBlendAlpha)); break; case PROP_PAD_BLEND_DEST_RGB: g_value_set_enum (value, gst_d3d11_compositor_blend_from_native (pad->desc.DestBlend)); break; case PROP_PAD_BLEND_DEST_ALPHA: g_value_set_enum (value, gst_d3d11_compositor_blend_from_native (pad->desc.DestBlendAlpha)); break; case PROP_PAD_BLEND_FACTOR_RED: g_value_set_float (value, pad->blend_factor[0]); break; case PROP_PAD_BLEND_FACTOR_GREEN: g_value_set_float (value, pad->blend_factor[1]); break; case PROP_PAD_BLEND_FACTOR_BLUE: g_value_set_float (value, pad->blend_factor[2]); break; case PROP_PAD_BLEND_FACTOR_ALPHA: g_value_set_float (value, pad->blend_factor[3]); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_d3d11_compositor_pad_init_blend_options (GstD3D11CompositorPad * pad) { gint i; pad->desc.BlendEnable = TRUE; pad->desc.SrcBlend = gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_SRC_RGB); pad->desc.DestBlend = gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_DEST_RGB); pad->desc.BlendOp = gst_d3d11_compositor_blend_operation_to_native (DEFAULT_PAD_BLEND_OP_RGB); pad->desc.SrcBlendAlpha = gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_SRC_ALPHA); pad->desc.DestBlendAlpha = gst_d3d11_compositor_blend_to_native (DEFAULT_PAD_BLEND_DEST_ALPHA); pad->desc.BlendOpAlpha = gst_d3d11_compositor_blend_operation_to_native (DEFAULT_PAD_BLEND_OP_ALPHA); pad->desc.RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL; for (i = 0; i < G_N_ELEMENTS (pad->blend_factor); i++) pad->blend_factor[i] = 1.0f; } static gboolean gst_d3d11_compositor_configure_fallback_pool (GstD3D11Compositor * self, GstVideoInfo * info, gint bind_flags, GstBufferPool ** pool) { GstD3D11AllocationParams *d3d11_params; GstBufferPool *new_pool; GstCaps *caps; if (*pool) { gst_buffer_pool_set_active (*pool, FALSE); gst_clear_object (pool); } caps = gst_video_info_to_caps (info); if (!caps) { GST_ERROR_OBJECT (self, "Couldn't create caps from info"); return FALSE; } d3d11_params = gst_d3d11_allocation_params_new (self->device, info, 0, bind_flags); new_pool = gst_d3d11_buffer_pool_new_with_options (self->device, caps, d3d11_params, 0, 0); gst_caps_unref (caps); gst_d3d11_allocation_params_free (d3d11_params); if (!new_pool) { GST_ERROR_OBJECT (self, "Failed to configure fallback pool"); return FALSE; } gst_buffer_pool_set_active (new_pool, TRUE); *pool = new_pool; return TRUE; } static gboolean gst_d3d11_compsitor_prepare_fallback_buffer (GstD3D11Compositor * self, GstVideoInfo * info, gboolean is_input, GstBufferPool ** pool, GstBuffer ** fallback_buffer) { GstBuffer *new_buf = NULL; gint bind_flags = D3D11_BIND_SHADER_RESOURCE; gint i; gst_clear_buffer (fallback_buffer); if (!is_input) bind_flags = D3D11_BIND_RENDER_TARGET; if (*pool == NULL && !gst_d3d11_compositor_configure_fallback_pool (self, info, bind_flags, pool)) { GST_ERROR_OBJECT (self, "Couldn't configure fallback buffer pool"); return FALSE; } if (gst_buffer_pool_acquire_buffer (*pool, &new_buf, NULL) != GST_FLOW_OK) { GST_ERROR_OBJECT (self, "Couldn't get fallback buffer from pool"); return FALSE; } for (i = 0; i < gst_buffer_n_memory (new_buf); i++) { GstD3D11Memory *new_mem = (GstD3D11Memory *) gst_buffer_peek_memory (new_buf, i); if (is_input && !gst_d3d11_memory_get_shader_resource_view_size (new_mem)) { GST_ERROR_OBJECT (self, "Couldn't prepare shader resource view"); gst_buffer_unref (new_buf); return FALSE; } else if (!is_input && !gst_d3d11_memory_get_render_target_view_size (new_mem)) { GST_ERROR_OBJECT (self, "Couldn't prepare render target view"); gst_buffer_unref (new_buf); return FALSE; } } *fallback_buffer = new_buf; return TRUE; } static gboolean gst_d3d11_compositor_copy_buffer (GstD3D11Compositor * self, GstVideoInfo * info, GstBuffer * src_buf, GstBuffer * dest_buf, gboolean do_device_copy) { gint i; if (do_device_copy) { return gst_d3d11_buffer_copy_into (dest_buf, src_buf, info); } else { GstVideoFrame src_frame, dest_frame; if (!gst_video_frame_map (&src_frame, info, src_buf, GST_MAP_READ | GST_VIDEO_FRAME_MAP_FLAG_NO_REF)) { GST_ERROR_OBJECT (self, "Couldn't map input buffer"); return FALSE; } if (!gst_video_frame_map (&dest_frame, info, dest_buf, GST_MAP_WRITE | GST_VIDEO_FRAME_MAP_FLAG_NO_REF)) { GST_ERROR_OBJECT (self, "Couldn't fallback buffer"); gst_video_frame_unmap (&src_frame); return FALSE; } for (i = 0; i < GST_VIDEO_FRAME_N_PLANES (&src_frame); i++) { if (!gst_video_frame_copy_plane (&dest_frame, &src_frame, i)) { GST_ERROR_OBJECT (self, "Couldn't copy %dth plane", i); gst_video_frame_unmap (&dest_frame); gst_video_frame_unmap (&src_frame); return FALSE; } } gst_video_frame_unmap (&dest_frame); gst_video_frame_unmap (&src_frame); } return TRUE; } static gboolean gst_d3d11_compositor_check_d3d11_memory (GstD3D11Compositor * self, GstBuffer * buffer, gboolean is_input, gboolean * view_available) { gint i; gboolean ret = TRUE; *view_available = TRUE; for (i = 0; i < gst_buffer_n_memory (buffer); i++) { GstMemory *mem = gst_buffer_peek_memory (buffer, i); GstD3D11Memory *dmem; if (!gst_is_d3d11_memory (mem)) { ret = FALSE; goto done; } dmem = (GstD3D11Memory *) mem; if (dmem->device != self->device) { ret = FALSE; goto done; } if (is_input) { if (!gst_d3d11_memory_get_shader_resource_view_size (dmem)) *view_available = FALSE; } else { if (!gst_d3d11_memory_get_render_target_view_size (dmem)) *view_available = FALSE; } } done: if (!ret) *view_available = FALSE; return ret; } static void gst_d3d11_compositor_pad_get_output_size (GstD3D11CompositorPad * comp_pad, gint out_par_n, gint out_par_d, gint * width, gint * height) { GstVideoAggregatorPad *vagg_pad = GST_VIDEO_AGGREGATOR_PAD (comp_pad); gint pad_width, pad_height; guint dar_n, dar_d; /* 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"); *width = 0; *height = 0; 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 (!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"); *width = *height = 0; 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); /* 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); } *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; /* 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); frame_rect = clamp_rectangle (cpad->xpos, cpad->ypos, width, height, GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info)); if (frame_rect.w == 0 || frame_rect.h == 0) { GST_DEBUG_OBJECT (pad, "Resulting frame is zero-width or zero-height " "(w: %i, h: %i), skipping", frame_rect.w, frame_rect.h); return TRUE; } return FALSE; } static gboolean gst_d3d11_compositor_pad_prepare_frame (GstVideoAggregatorPad * pad, GstVideoAggregator * vagg, GstBuffer * buffer, GstVideoFrame * prepared_frame) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg); GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad); GstBuffer *target_buf = buffer; gboolean do_device_copy = FALSE; /* Skip this frame */ if (gst_d3d11_compositor_pad_check_frame_obscured (pad, vagg)) return TRUE; /* Use fallback buffer when input buffer is: * - non-d3d11 memory * - or, from different d3d11 device * - or not bound to shader resource */ if (!gst_d3d11_compositor_check_d3d11_memory (self, buffer, TRUE, &do_device_copy) || !do_device_copy) { if (!gst_d3d11_compsitor_prepare_fallback_buffer (self, &pad->info, TRUE, &cpad->fallback_pool, &cpad->fallback_buf)) { GST_ERROR_OBJECT (self, "Couldn't prepare fallback buffer"); return FALSE; } if (!gst_d3d11_compositor_copy_buffer (self, &pad->info, buffer, cpad->fallback_buf, do_device_copy)) { GST_ERROR_OBJECT (self, "Couldn't copy input buffer to fallback buffer"); gst_clear_buffer (&cpad->fallback_buf); return FALSE; } target_buf = cpad->fallback_buf; } if (!gst_video_frame_map (prepared_frame, &pad->info, target_buf, GST_MAP_READ | GST_MAP_D3D11)) { GST_WARNING_OBJECT (pad, "Couldn't map input buffer"); return FALSE; } return TRUE; } static void gst_d3d11_compositor_pad_clean_frame (GstVideoAggregatorPad * pad, GstVideoAggregator * vagg, GstVideoFrame * prepared_frame) { GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad); GST_VIDEO_AGGREGATOR_PAD_CLASS (parent_pad_class)->clean_frame (pad, vagg, prepared_frame); gst_clear_buffer (&cpad->fallback_buf); } static gboolean gst_d3d11_compositor_pad_setup_converter (GstVideoAggregatorPad * pad, GstVideoAggregator * vagg) { GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad); GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg); RECT rect; gint width, height; GstVideoInfo *info = &vagg->info; GstVideoRectangle frame_rect; gboolean is_first = FALSE; #ifndef GST_DISABLE_GST_DEBUG guint zorder = 0; #endif if (!cpad->convert || cpad->alpha_updated || cpad->caps_updated) { if (cpad->convert) gst_d3d11_color_converter_free (cpad->convert); cpad->convert = gst_d3d11_color_converter_new_with_alpha (self->device, &pad->info, &vagg->info, cpad->alpha); cpad->alpha_updated = FALSE; cpad->caps_updated = FALSE; if (!cpad->convert) { GST_ERROR_OBJECT (pad, "Couldn't create converter"); return FALSE; } is_first = TRUE; } if (!cpad->blend || cpad->blend_desc_updated) { HRESULT hr; D3D11_BLEND_DESC desc = { 0, }; ID3D11BlendState *blend = NULL; ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (self->device); if (cpad->blend) { ID3D11BlendState_Release (cpad->blend); cpad->blend = NULL; } desc.AlphaToCoverageEnable = FALSE; desc.IndependentBlendEnable = FALSE; desc.RenderTarget[0] = cpad->desc; hr = ID3D11Device_CreateBlendState (device_handle, &desc, &blend); if (!gst_d3d11_result (hr, self->device)) { GST_ERROR_OBJECT (pad, "Couldn't create blend staten, hr: 0x%x", (guint) hr); return FALSE; } cpad->blend = blend; } if (!is_first && !cpad->position_updated) return TRUE; gst_d3d11_compositor_pad_get_output_size (cpad, GST_VIDEO_INFO_PAR_N (info), GST_VIDEO_INFO_PAR_D (info), &width, &height); frame_rect = clamp_rectangle (cpad->xpos, cpad->ypos, width, height, GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info)); rect.left = frame_rect.x; rect.top = frame_rect.y; rect.right = frame_rect.x + frame_rect.w; rect.bottom = frame_rect.y + frame_rect.h; #ifndef GST_DISABLE_GST_DEBUG g_object_get (pad, "zorder", &zorder, NULL); GST_LOG_OBJECT (pad, "Update position, pad-xpos %d, pad-ypos %d, " "pad-zorder %d, pad-width %d, pad-height %d, in-resolution %dx%d, " "out-resoution %dx%d, dst-{left,top,right,bottom} %d-%d-%d-%d", cpad->xpos, cpad->ypos, zorder, cpad->width, cpad->height, GST_VIDEO_INFO_WIDTH (&pad->info), GST_VIDEO_INFO_HEIGHT (&pad->info), GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info), (gint) rect.left, (gint) rect.top, (gint) rect.right, (gint) rect.bottom); #endif cpad->position_updated = FALSE; return gst_d3d11_color_converter_update_dest_rect (cpad->convert, &rect); } static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink_%u", GST_PAD_SINK, GST_PAD_REQUEST, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, "{ RGBA, BGRA }") )); static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_D3D11_MEMORY, "{ RGBA, BGRA }") )); enum { PROP_0, PROP_ADAPTER, PROP_BACKGROUND, }; #define DEFAULT_ADAPTER -1 #define DEFAULT_BACKGROUND GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER static void gst_d3d11_compositor_child_proxy_init (gpointer g_iface, gpointer iface_data); static void gst_d3d11_compositor_dispose (GObject * object); static void gst_d3d11_compositor_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_d3d11_compositor_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstPad *gst_d3d11_compositor_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps); static void gst_d3d11_compositor_release_pad (GstElement * element, GstPad * pad); static void gst_d3d11_compositor_set_context (GstElement * element, GstContext * context); static gboolean gst_d3d11_compositor_start (GstAggregator * aggregator); static gboolean gst_d3d11_compositor_stop (GstAggregator * aggregator); static gboolean gst_d3d11_compositor_sink_query (GstAggregator * aggregator, GstAggregatorPad * pad, GstQuery * query); static gboolean gst_d3d11_compositor_src_query (GstAggregator * aggregator, GstQuery * query); static GstCaps *gst_d3d11_compositor_fixate_src_caps (GstAggregator * aggregator, GstCaps * caps); static gboolean gst_d3d11_compositor_propose_allocation (GstAggregator * aggregator, GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query); static gboolean gst_d3d11_compositor_decide_allocation (GstAggregator * aggregator, GstQuery * query); static gboolean gst_d3d11_compositor_sink_event (GstAggregator * agg, GstAggregatorPad * pad, GstEvent * event); static GstFlowReturn gst_d3d11_compositor_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf); #define gst_d3d11_compositor_parent_class parent_class G_DEFINE_TYPE_WITH_CODE (GstD3D11Compositor, gst_d3d11_compositor, GST_TYPE_VIDEO_AGGREGATOR, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY, gst_d3d11_compositor_child_proxy_init)); static void gst_d3d11_compositor_class_init (GstD3D11CompositorClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GstAggregatorClass *aggregator_class = GST_AGGREGATOR_CLASS (klass); GstVideoAggregatorClass *vagg_class = GST_VIDEO_AGGREGATOR_CLASS (klass); gobject_class->dispose = gst_d3d11_compositor_dispose; gobject_class->set_property = gst_d3d11_compositor_set_property; gobject_class->get_property = gst_d3d11_compositor_get_property; g_object_class_install_property (gobject_class, PROP_ADAPTER, g_param_spec_int ("adapter", "Adapter", "Adapter index for creating device (-1 for default)", -1, G_MAXINT32, DEFAULT_ADAPTER, G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_BACKGROUND, g_param_spec_enum ("background", "Background", "Background type", GST_TYPE_COMPOSITOR_BACKGROUND, DEFAULT_BACKGROUND, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); element_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_request_new_pad); element_class->release_pad = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_release_pad); element_class->set_context = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_set_context); aggregator_class->start = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_start); aggregator_class->stop = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_stop); aggregator_class->sink_query = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_sink_query); aggregator_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_src_query); aggregator_class->fixate_src_caps = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_fixate_src_caps); aggregator_class->propose_allocation = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_propose_allocation); aggregator_class->decide_allocation = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_decide_allocation); aggregator_class->sink_event = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_sink_event); vagg_class->aggregate_frames = GST_DEBUG_FUNCPTR (gst_d3d11_compositor_aggregate_frames); gst_element_class_add_static_pad_template_with_gtype (element_class, &src_template, GST_TYPE_AGGREGATOR_PAD); gst_element_class_add_static_pad_template_with_gtype (element_class, &sink_template, GST_TYPE_D3D11_COMPOSITOR_PAD); gst_element_class_set_static_metadata (element_class, "Direct3D11 Compositor", "Filter/Editor/Video/Compositor", "Composite multiple video streams via D3D11 API", "Seungha Yang "); } static void gst_d3d11_compositor_init (GstD3D11Compositor * self) { self->adapter = DEFAULT_ADAPTER; self->background = DEFAULT_BACKGROUND; } static void gst_d3d11_compositor_dispose (GObject * object) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object); gst_clear_object (&self->device); gst_clear_buffer (&self->fallback_buf); gst_clear_object (&self->fallback_pool); g_clear_pointer (&self->checker_background, gst_d3d11_quad_free); G_OBJECT_CLASS (parent_class)->dispose (object); } static void gst_d3d11_compositor_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object); switch (prop_id) { case PROP_ADAPTER: self->adapter = g_value_get_int (value); break; case PROP_BACKGROUND: self->background = g_value_get_enum (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_d3d11_compositor_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (object); switch (prop_id) { case PROP_ADAPTER: g_value_set_int (value, self->adapter); break; case PROP_BACKGROUND: g_value_set_enum (value, self->background); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GObject * gst_d3d11_compositor_child_proxy_get_child_by_index (GstChildProxy * proxy, guint index) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (proxy); GObject *obj = NULL; GST_OBJECT_LOCK (self); obj = 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 = g_iface; iface->get_child_by_index = gst_d3d11_compositor_child_proxy_get_child_by_index; iface->get_children_count = gst_d3d11_compositor_child_proxy_get_children_count; } static GstPad * gst_d3d11_compositor_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps) { GstPad *pad; pad = GST_ELEMENT_CLASS (parent_class)->request_new_pad (element, templ, name, caps); if (pad == NULL) goto could_not_create; gst_child_proxy_child_added (GST_CHILD_PROXY (element), G_OBJECT (pad), GST_OBJECT_NAME (pad)); GST_DEBUG_OBJECT (element, "Created new pad %s:%s", GST_DEBUG_PAD_NAME (pad)); return pad; could_not_create: { GST_DEBUG_OBJECT (element, "could not create/add pad"); return NULL; } } static 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_clear_buffer (&cpad->fallback_buf); gst_clear_object (&cpad->fallback_pool); g_clear_pointer (&cpad->convert, gst_d3d11_color_converter_free); if (cpad->blend) { ID3D11BlendState_Release (cpad->blend); cpad->blend = NULL; } GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad); } static void gst_d3d11_compositor_set_context (GstElement * element, GstContext * context) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (element); gst_d3d11_handle_set_context (element, context, self->adapter, &self->device); GST_ELEMENT_CLASS (parent_class)->set_context (element, context); } static gboolean gst_d3d11_compositor_start (GstAggregator * aggregator) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); if (!gst_d3d11_ensure_element_data (GST_ELEMENT_CAST (self), self->adapter, &self->device)) { GST_ERROR_OBJECT (self, "Failed to get D3D11 device"); return FALSE; } return GST_AGGREGATOR_CLASS (parent_class)->start (aggregator); } static gboolean gst_d3d11_compositor_stop (GstAggregator * aggregator) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); g_clear_pointer (&self->checker_background, gst_d3d11_quad_free); gst_clear_object (&self->device); return GST_AGGREGATOR_CLASS (parent_class)->stop (aggregator); } static GstCaps * gst_d3d11_compositor_sink_getcaps (GstPad * pad, GstCaps * filter) { GstCaps *sinkcaps; GstCaps *template_caps; GstCaps *filtered_caps; GstCaps *returned_caps; template_caps = gst_pad_get_pad_template_caps (pad); sinkcaps = gst_pad_get_current_caps (pad); if (sinkcaps == NULL) { sinkcaps = gst_caps_ref (template_caps); } else { sinkcaps = gst_caps_merge (sinkcaps, gst_caps_ref (template_caps)); } if (filter) { filtered_caps = gst_caps_intersect (sinkcaps, filter); gst_caps_unref (sinkcaps); } else { filtered_caps = sinkcaps; /* pass ownership */ } returned_caps = gst_caps_intersect (filtered_caps, template_caps); gst_caps_unref (template_caps); gst_caps_unref (filtered_caps); GST_DEBUG_OBJECT (pad, "returning %" GST_PTR_FORMAT, returned_caps); return returned_caps; } static gboolean gst_d3d11_compositor_sink_acceptcaps (GstPad * pad, GstCaps * caps) { gboolean ret; GstCaps *template_caps; GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps); template_caps = gst_pad_get_pad_template_caps (pad); template_caps = gst_caps_make_writable (template_caps); ret = gst_caps_can_intersect (caps, template_caps); GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT, (ret ? "" : "not "), caps); gst_caps_unref (template_caps); return ret; } static gboolean gst_d3d11_compositor_sink_query (GstAggregator * aggregator, GstAggregatorPad * pad, GstQuery * query) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONTEXT: { gboolean ret; ret = gst_d3d11_handle_context_query (GST_ELEMENT (aggregator), query, self->device); if (ret) return TRUE; break; } case GST_QUERY_CAPS: { GstCaps *filter, *caps; gst_query_parse_caps (query, &filter); caps = gst_d3d11_compositor_sink_getcaps (GST_PAD (pad), filter); gst_query_set_caps_result (query, caps); gst_caps_unref (caps); return TRUE; } case GST_QUERY_ACCEPT_CAPS: { GstCaps *caps; gboolean ret; gst_query_parse_accept_caps (query, &caps); ret = gst_d3d11_compositor_sink_acceptcaps (GST_PAD (pad), caps); gst_query_set_accept_caps_result (query, ret); return TRUE; } default: break; } return GST_AGGREGATOR_CLASS (parent_class)->sink_query (aggregator, pad, query); } static gboolean gst_d3d11_compositor_src_query (GstAggregator * aggregator, GstQuery * query) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONTEXT: { gboolean ret; ret = gst_d3d11_handle_context_query (GST_ELEMENT (aggregator), query, self->device); if (ret) return TRUE; break; } default: break; } return GST_AGGREGATOR_CLASS (parent_class)->src_query (aggregator, query); } static GstCaps * gst_d3d11_compositor_fixate_src_caps (GstAggregator * aggregator, GstCaps * caps) { GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (aggregator); GList *l; gint best_width = -1, best_height = -1; gint best_fps_n = -1, best_fps_d = -1; gint par_n, par_d; gdouble best_fps = 0.; GstCaps *ret = NULL; GstStructure *s; ret = gst_caps_make_writable (caps); /* we need this to calculate how large to make the output frame */ s = gst_caps_get_structure (ret, 0); if (gst_structure_has_field (s, "pixel-aspect-ratio")) { gst_structure_fixate_field_nearest_fraction (s, "pixel-aspect-ratio", 1, 1); gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d); } else { par_n = par_d = 1; } GST_OBJECT_LOCK (vagg); for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) { GstVideoAggregatorPad *vaggpad = 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; 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); if (width == 0 || height == 0) continue; this_width = width + MAX (cpad->xpos, 0); this_height = height + MAX (cpad->ypos, 0); if (best_width < this_width) best_width = this_width; if (best_height < this_height) best_height = this_height; if (fps_d == 0) cur_fps = 0.0; else gst_util_fraction_to_double (fps_n, fps_d, &cur_fps); if (best_fps < cur_fps) { best_fps = cur_fps; best_fps_n = fps_n; best_fps_d = fps_d; } } GST_OBJECT_UNLOCK (vagg); if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) { best_fps_n = 25; best_fps_d = 1; best_fps = 25.0; } gst_structure_fixate_field_nearest_int (s, "width", best_width); gst_structure_fixate_field_nearest_int (s, "height", best_height); gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n, best_fps_d); ret = gst_caps_fixate (ret); GST_LOG_OBJECT (aggregator, "Fixated caps %" GST_PTR_FORMAT, ret); return ret; } static gboolean gst_d3d11_compositor_propose_allocation (GstAggregator * aggregator, GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); GstVideoInfo info; GstBufferPool *pool; GstCaps *caps; guint size; gst_query_parse_allocation (query, &caps, NULL); if (caps == NULL) return FALSE; if (!gst_video_info_from_caps (&info, caps)) return FALSE; if (gst_query_get_n_allocation_pools (query) == 0) { GstD3D11AllocationParams *d3d11_params; d3d11_params = gst_d3d11_allocation_params_new (self->device, &info, 0, D3D11_BIND_SHADER_RESOURCE); pool = gst_d3d11_buffer_pool_new_with_options (self->device, caps, d3d11_params, 0, 0); gst_d3d11_allocation_params_free (d3d11_params); if (!pool) { GST_ERROR_OBJECT (self, "Failed to create buffer pool"); return FALSE; } /* d3d11 buffer pool might update buffer size by self */ size = GST_D3D11_BUFFER_POOL (pool)->buffer_size; gst_query_add_allocation_pool (query, pool, size, 0, 0); gst_object_unref (pool); } gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL); return TRUE; } static gboolean gst_d3d11_compositor_decide_allocation (GstAggregator * aggregator, GstQuery * query) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (aggregator); GstCaps *caps; GstBufferPool *pool = NULL; guint n, size, min, max; GstVideoInfo info; GstStructure *config; GstD3D11AllocationParams *d3d11_params; gst_query_parse_allocation (query, &caps, NULL); if (!caps) { GST_DEBUG_OBJECT (self, "No output caps"); return FALSE; } gst_video_info_from_caps (&info, caps); n = gst_query_get_n_allocation_pools (query); if (n > 0) gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); /* create our own pool */ if (pool && !GST_D3D11_BUFFER_POOL (pool)) { gst_object_unref (pool); pool = NULL; } if (!pool) { pool = gst_d3d11_buffer_pool_new (self->device); min = max = 0; size = (guint) info.size; } config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, min, max); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); d3d11_params = gst_buffer_pool_config_get_d3d11_allocation_params (config); if (!d3d11_params) { d3d11_params = gst_d3d11_allocation_params_new (self->device, &info, 0, D3D11_BIND_RENDER_TARGET); } else { gint 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 might update buffer size by self */ size = GST_D3D11_BUFFER_POOL (pool)->buffer_size; 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; } static gboolean gst_d3d11_compositor_sink_event (GstAggregator * agg, GstAggregatorPad * pad, GstEvent * event) { GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CAPS: GST_DEBUG_OBJECT (pad, "Got new caps event %" GST_PTR_FORMAT, event); cpad->caps_updated = TRUE; break; default: break; } return GST_AGGREGATOR_CLASS (parent_class)->sink_event (agg, pad, event); } typedef struct { struct { FLOAT x; FLOAT y; FLOAT z; } position; struct { FLOAT u; FLOAT v; } texture; } VertexData; static GstD3D11Quad * gst_d3d11_compositor_create_checker_quad (GstD3D11Compositor * self) { ID3D11PixelShader *ps = NULL; ID3D11VertexShader *vs = NULL; ID3D11InputLayout *layout = NULL; GstD3D11Quad *quad = NULL; VertexData *vertex_data; WORD *indices; ID3D11Device *device_handle; ID3D11DeviceContext *context_handle; D3D11_MAPPED_SUBRESOURCE map; D3D11_INPUT_ELEMENT_DESC input_desc; D3D11_BUFFER_DESC buffer_desc; ID3D11Buffer *vertex_buffer = NULL; ID3D11Buffer *index_buffer = NULL; gboolean ret = FALSE; HRESULT hr; device_handle = gst_d3d11_device_get_device_handle (self->device); context_handle = gst_d3d11_device_get_device_context_handle (self->device); ret = gst_d3d11_create_pixel_shader (self->device, checker_ps_src, &ps); if (!ret) { GST_ERROR_OBJECT (self, "Couldn't setup pixel shader"); goto done; } memset (&input_desc, 0, sizeof (D3D11_INPUT_ELEMENT_DESC)); input_desc.SemanticName = "POSITION"; input_desc.SemanticIndex = 0; input_desc.Format = DXGI_FORMAT_R32G32B32_FLOAT; input_desc.InputSlot = 0; input_desc.AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT; input_desc.InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA; input_desc.InstanceDataStepRate = 0; if (!gst_d3d11_create_vertex_shader (self->device, checker_vs_src, &input_desc, 1, &vs, &layout)) { GST_ERROR_OBJECT (self, "Couldn't setup vertex shader"); goto done; } 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 = ID3D11Device_CreateBuffer (device_handle, &buffer_desc, NULL, &vertex_buffer); if (!gst_d3d11_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create vertex buffer, hr: 0x%x", (guint) hr); goto done; } hr = ID3D11DeviceContext_Map (context_handle, (ID3D11Resource *) vertex_buffer, 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); goto done; } vertex_data = (VertexData *) map.pData; /* bottom left */ /* bottom left */ vertex_data[0].position.x = -1.0f; vertex_data[0].position.y = -1.0f; vertex_data[0].position.z = 0.0f; vertex_data[0].texture.u = 0.0f; vertex_data[0].texture.v = 1.0f; /* top left */ vertex_data[1].position.x = -1.0f; vertex_data[1].position.y = 1.0f; vertex_data[1].position.z = 0.0f; vertex_data[1].texture.u = 0.0f; vertex_data[1].texture.v = 0.0f; /* top right */ vertex_data[2].position.x = 1.0f; vertex_data[2].position.y = 1.0f; vertex_data[2].position.z = 0.0f; vertex_data[2].texture.u = 1.0f; vertex_data[2].texture.v = 0.0f; /* bottom right */ vertex_data[3].position.x = 1.0f; vertex_data[3].position.y = -1.0f; vertex_data[3].position.z = 0.0f; vertex_data[3].texture.u = 1.0f; vertex_data[3].texture.v = 1.0f; ID3D11DeviceContext_Unmap (context_handle, (ID3D11Resource *) vertex_buffer, 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 = ID3D11Device_CreateBuffer (device_handle, &buffer_desc, NULL, &index_buffer); if (!gst_d3d11_result (hr, self->device)) { GST_ERROR_OBJECT (self, "Couldn't create index buffer, hr: 0x%x", (guint) hr); goto done; } hr = ID3D11DeviceContext_Map (context_handle, (ID3D11Resource *) index_buffer, 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); goto done; } 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 */ ID3D11DeviceContext_Unmap (context_handle, (ID3D11Resource *) index_buffer, 0); quad = gst_d3d11_quad_new (self->device, ps, vs, layout, NULL, NULL, NULL, NULL, vertex_buffer, sizeof (VertexData), index_buffer, DXGI_FORMAT_R16_UINT, 6); if (!quad) { GST_ERROR_OBJECT (self, "Couldn't setup quad"); goto done; } done: if (ps) ID3D11PixelShader_Release (ps); if (vs) ID3D11VertexShader_Release (vs); if (layout) ID3D11InputLayout_Release (layout); if (vertex_buffer) ID3D11Buffer_Release (vertex_buffer); if (index_buffer) ID3D11Buffer_Release (index_buffer); return quad; } static gboolean gst_d3d11_compositor_draw_background_checker (GstD3D11Compositor * self, ID3D11RenderTargetView * rtv) { if (!self->checker_background) { GstVideoInfo *info = &GST_VIDEO_AGGREGATOR_CAST (self)->info; self->checker_background = gst_d3d11_compositor_create_checker_quad (self); if (!self->checker_background) return FALSE; self->viewport.TopLeftX = 0; self->viewport.TopLeftY = 0; self->viewport.Width = GST_VIDEO_INFO_WIDTH (info); self->viewport.Height = GST_VIDEO_INFO_HEIGHT (info); self->viewport.MinDepth = 0.0f; self->viewport.MaxDepth = 1.0f; } return gst_d3d11_draw_quad_unlocked (self->checker_background, &self->viewport, 1, NULL, 0, &rtv, 1, NULL, NULL, NULL); } /* Must be called with d3d11 device lock */ static gboolean gst_d3d11_compositor_draw_background (GstD3D11Compositor * self, ID3D11RenderTargetView * rtv) { ID3D11DeviceContext *device_context = gst_d3d11_device_get_device_context_handle (self->device); FLOAT rgba[4] = { 0.0f, 0.0f, 0.0f, 1.0f }; switch (self->background) { case GST_D3D11_COMPOSITOR_BACKGROUND_CHECKER: return gst_d3d11_compositor_draw_background_checker (self, rtv); case GST_D3D11_COMPOSITOR_BACKGROUND_BLACK: /* {0, 0, 0, 1} */ break; case GST_D3D11_COMPOSITOR_BACKGROUND_WHITE: rgba[0] = 1.0f; rgba[1] = 1.0f; rgba[2] = 1.0f; break; case GST_D3D11_COMPOSITOR_BACKGROUND_TRANSPARENT: rgba[3] = 0.0f; break; default: g_assert_not_reached (); return FALSE; } ID3D11DeviceContext_ClearRenderTargetView (device_context, rtv, rgba); return TRUE; } static GstFlowReturn gst_d3d11_compositor_aggregate_frames (GstVideoAggregator * vagg, GstBuffer * outbuf) { GstD3D11Compositor *self = GST_D3D11_COMPOSITOR (vagg); GList *iter; GstBuffer *target_buf = outbuf; gboolean need_copy = FALSE; gboolean do_device_copy = FALSE; GstFlowReturn ret = GST_FLOW_OK; ID3D11RenderTargetView *rtv[GST_VIDEO_MAX_PLANES] = { NULL, }; gint i, j; gint view_idx; /* Use fallback buffer when output buffer is: * - non-d3d11 memory * - or, from different d3d11 device * - or not bound to render target */ if (!gst_d3d11_compositor_check_d3d11_memory (self, outbuf, FALSE, &do_device_copy) || !do_device_copy) { if (!gst_d3d11_compsitor_prepare_fallback_buffer (self, &vagg->info, FALSE, &self->fallback_pool, &self->fallback_buf)) { GST_ERROR_OBJECT (self, "Couldn't prepare fallback buffer"); return GST_FLOW_ERROR; } GST_TRACE_OBJECT (self, "Will draw on fallback texture"); need_copy = TRUE; target_buf = self->fallback_buf; } view_idx = 0; for (i = 0; i < gst_buffer_n_memory (target_buf); i++) { GstMemory *mem = gst_buffer_peek_memory (target_buf, i); GstD3D11Memory *dmem; guint rtv_size; if (!gst_is_d3d11_memory (mem)) { GST_ERROR_OBJECT (self, "Invalid output memory"); return GST_FLOW_ERROR; } dmem = (GstD3D11Memory *) mem; rtv_size = gst_d3d11_memory_get_render_target_view_size (dmem); if (!rtv_size) { GST_ERROR_OBJECT (self, "Render target view is unavailable"); return GST_FLOW_ERROR; } for (j = 0; j < rtv_size; j++) { g_assert (view_idx < GST_VIDEO_MAX_PLANES); rtv[view_idx] = gst_d3d11_memory_get_render_target_view (dmem, j); view_idx++; } /* Mark need-download for fallback buffer use case */ GST_MINI_OBJECT_FLAG_SET (dmem, GST_D3D11_MEMORY_TRANSFER_NEED_DOWNLOAD); } gst_d3d11_device_lock (self->device); /* XXX: the number of render target view must be one here, since we support * only RGBA or BGRA */ if (!gst_d3d11_compositor_draw_background (self, rtv[0])) { GST_ERROR_OBJECT (self, "Couldn't draw background"); gst_d3d11_device_unlock (self->device); ret = GST_FLOW_ERROR; goto done; } GST_OBJECT_LOCK (self); for (iter = GST_ELEMENT (vagg)->sinkpads; iter; iter = g_list_next (iter)) { GstVideoAggregatorPad *pad = iter->data; GstD3D11CompositorPad *cpad = GST_D3D11_COMPOSITOR_PAD (pad); GstVideoFrame *prepared_frame = gst_video_aggregator_pad_get_prepared_frame (pad); ID3D11ShaderResourceView *srv[GST_VIDEO_MAX_PLANES] = { NULL, }; GstBuffer *buffer; if (!prepared_frame) continue; if (!gst_d3d11_compositor_pad_setup_converter (pad, vagg)) { GST_ERROR_OBJECT (self, "Couldn't setup converter"); ret = GST_FLOW_ERROR; break; } buffer = prepared_frame->buffer; view_idx = 0; for (i = 0; i < gst_buffer_n_memory (buffer); i++) { GstD3D11Memory *dmem = (GstD3D11Memory *) gst_buffer_peek_memory (buffer, i); guint srv_size = gst_d3d11_memory_get_shader_resource_view_size (dmem); for (j = 0; j < srv_size; j++) { g_assert (view_idx < GST_VIDEO_MAX_PLANES); srv[view_idx] = gst_d3d11_memory_get_shader_resource_view (dmem, j); view_idx++; } } if (!gst_d3d11_color_converter_convert_unlocked (cpad->convert, srv, rtv, cpad->blend, cpad->blend_factor)) { GST_ERROR_OBJECT (self, "Couldn't convert frame"); ret = GST_FLOW_ERROR; break; } } GST_OBJECT_UNLOCK (self); gst_d3d11_device_unlock (self->device); if (ret != GST_FLOW_OK) goto done; if (need_copy && !gst_d3d11_compositor_copy_buffer (self, &vagg->info, target_buf, outbuf, do_device_copy)) { GST_ERROR_OBJECT (self, "Couldn't copy input buffer to fallback buffer"); ret = GST_FLOW_ERROR; } done: gst_clear_buffer (&self->fallback_buf); return ret; }