/* GStreamer
* Copyright (C) 2023 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-d3d12compositor
* @title: d3d12compositor
*
* A Direct3D12 based video compositing element.
*
* ## Example launch line
* ```
* gst-launch-1.0 d3d12compositor name=c ! d3d12videosink \
* videotestsrc ! video/x-raw,width=320,height=240 ! c. \
* videotestsrc pattern=ball ! video/x-raw,width=100,height=100 ! c.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstd3d12compositor.h"
#include "gstd3d12pluginutils.h"
#include <directx/d3dx12.h>
#include <mutex>
#include <future>
#include <vector>
#include <queue>
#include <string.h>
#include <wrl.h>
#include <gst/d3dshader/gstd3dshader.h>
GST_DEBUG_CATEGORY_STATIC (gst_d3d12_compositor_debug);
#define GST_CAT_DEFAULT gst_d3d12_compositor_debug
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
enum GstD3D12CompositorBackground
{
GST_D3D12_COMPOSITOR_BACKGROUND_CHECKER,
GST_D3D12_COMPOSITOR_BACKGROUND_BLACK,
GST_D3D12_COMPOSITOR_BACKGROUND_WHITE,
GST_D3D12_COMPOSITOR_BACKGROUND_TRANSPARENT,
};
#define GST_TYPE_D3D12_COMPOSITOR_BACKGROUND (gst_d3d12_compositor_background_get_type())
static GType
gst_d3d12_compositor_background_get_type (void)
{
static GType compositor_background_type = 0;
static const GEnumValue compositor_background[] = {
{GST_D3D12_COMPOSITOR_BACKGROUND_CHECKER, "Checker pattern", "checker"},
{GST_D3D12_COMPOSITOR_BACKGROUND_BLACK, "Black", "black"},
{GST_D3D12_COMPOSITOR_BACKGROUND_WHITE, "White", "white"},
{GST_D3D12_COMPOSITOR_BACKGROUND_TRANSPARENT,
"Transparent Background to enable further compositing", "transparent"},
{0, nullptr, nullptr},
};
GST_D3D12_CALL_ONCE_BEGIN {
compositor_background_type =
g_enum_register_static ("GstD3D12CompositorBackground",
compositor_background);
} GST_D3D12_CALL_ONCE_END;
return compositor_background_type;
}
enum GstD3D12CompositorOperator
{
GST_D3D12_COMPOSITOR_OPERATOR_SOURCE,
GST_D3D12_COMPOSITOR_OPERATOR_OVER,
};
#define GST_TYPE_D3D12_COMPOSITOR_OPERATOR (gst_d3d12_compositor_operator_get_type())
static GType
gst_d3d12_compositor_operator_get_type (void)
{
static GType compositor_operator_type = 0;
static const GEnumValue compositor_operator[] = {
{GST_D3D12_COMPOSITOR_OPERATOR_SOURCE, "Source", "source"},
{GST_D3D12_COMPOSITOR_OPERATOR_OVER, "Over", "over"},
{0, nullptr, nullptr},
};
GST_D3D12_CALL_ONCE_BEGIN {
compositor_operator_type =
g_enum_register_static ("GstD3D12CompositorOperator",
compositor_operator);
} GST_D3D12_CALL_ONCE_END;
return compositor_operator_type;
}
enum GstD3D12CompositorSizingPolicy
{
GST_D3D12_COMPOSITOR_SIZING_POLICY_NONE,
GST_D3D12_COMPOSITOR_SIZING_POLICY_KEEP_ASPECT_RATIO,
};
#define GST_TYPE_D3D12_COMPOSITOR_SIZING_POLICY (gst_d3d12_compositor_sizing_policy_get_type())
static GType
gst_d3d12_compositor_sizing_policy_get_type (void)
{
static GType sizing_policy_type = 0;
static const GEnumValue sizing_polices[] = {
{GST_D3D12_COMPOSITOR_SIZING_POLICY_NONE,
"None: Image is scaled to fill configured destination rectangle without "
"padding or keeping the aspect ratio", "none"},
{GST_D3D12_COMPOSITOR_SIZING_POLICY_KEEP_ASPECT_RATIO,
"Keep Aspect Ratio: Image is scaled to fit destination rectangle "
"specified by GstD3D12CompositorPad:{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},
};
GST_D3D12_CALL_ONCE_BEGIN {
sizing_policy_type =
g_enum_register_static ("GstD3D12CompositorSizingPolicy",
sizing_polices);
} GST_D3D12_CALL_ONCE_END;
return sizing_policy_type;
}
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_D3D12_COMPOSITOR_OPERATOR_OVER
#define DEFAULT_PAD_SIZING_POLICY GST_D3D12_COMPOSITOR_SIZING_POLICY_NONE
enum
{
PROP_0,
PROP_ADAPTER,
PROP_BACKGROUND,
PROP_IGNORE_INACTIVE_PADS,
};
#define DEFAULT_ADAPTER -1
#define DEFAULT_BACKGROUND GST_D3D12_COMPOSITOR_BACKGROUND_CHECKER
static const D3D12_RENDER_TARGET_BLEND_DESC g_blend_source = {
TRUE,
FALSE,
D3D12_BLEND_ONE,
D3D12_BLEND_ZERO,
D3D12_BLEND_OP_ADD,
D3D12_BLEND_ONE,
D3D12_BLEND_ZERO,
D3D12_BLEND_OP_ADD,
D3D12_LOGIC_OP_NOOP,
D3D12_COLOR_WRITE_ENABLE_ALL,
};
static const D3D12_RENDER_TARGET_BLEND_DESC g_blend_over = {
TRUE,
FALSE,
D3D12_BLEND_SRC_ALPHA,
D3D12_BLEND_INV_SRC_ALPHA,
D3D12_BLEND_OP_ADD,
D3D12_BLEND_ONE,
D3D12_BLEND_INV_SRC_ALPHA,
D3D12_BLEND_OP_ADD,
D3D12_LOGIC_OP_NOOP,
D3D12_COLOR_WRITE_ENABLE_ALL,
};
static const D3D12_RENDER_TARGET_BLEND_DESC g_blend_over_factor = {
TRUE,
FALSE,
D3D12_BLEND_BLEND_FACTOR,
D3D12_BLEND_INV_BLEND_FACTOR,
D3D12_BLEND_OP_ADD,
D3D12_BLEND_BLEND_FACTOR,
D3D12_BLEND_INV_BLEND_FACTOR,
D3D12_BLEND_OP_ADD,
D3D12_LOGIC_OP_NOOP,
D3D12_COLOR_WRITE_ENABLE_ALL,
};
static const D3D12_ROOT_SIGNATURE_FLAGS g_rs_flags =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS;
/* *INDENT-OFF* */
struct PadContext
{
PadContext (GstD3D12Device * dev)
{
event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS);
device = (GstD3D12Device *) gst_object_ref (dev);
auto device_handle = gst_d3d12_device_get_device_handle (device);
ca_pool = gst_d3d12_command_allocator_pool_new (device_handle,
D3D12_COMMAND_LIST_TYPE_DIRECT);
gst_video_info_init (&info);
}
PadContext () = delete;
~PadContext ()
{
gst_d3d12_device_fence_wait (device, D3D12_COMMAND_LIST_TYPE_DIRECT,
fence_val, event_handle);
CloseHandle (event_handle);
gst_clear_d3d12_fence_data (&fence_data);
gst_clear_object (&conv);
gst_clear_object (&ca_pool);
gst_clear_object (&device);
}
GstVideoInfo info;
GstD3D12CommandAllocatorPool *ca_pool;
ComPtr < ID3D12GraphicsCommandList > cl;
GstD3D12FenceData *fence_data = nullptr;
GstD3D12Device *device;
GstD3D12Converter *conv = nullptr;
HANDLE event_handle;
guint64 fence_val = 0;
};
/* *INDENT-ON* */
struct GstD3D12CompositorPadPrivate
{
GstD3D12CompositorPadPrivate ()
{
blend_desc = CD3DX12_BLEND_DESC (D3D12_DEFAULT);
blend_desc.RenderTarget[0] = g_blend_over;
for (guint i = 0; i < 4; i++)
blend_factor[i] = 1.0f;
}
std::unique_ptr < PadContext > ctx;
std::future < gboolean > prepare_rst;
gboolean position_updated = FALSE;
gboolean alpha_updated = FALSE;
gboolean blend_desc_updated = FALSE;
D3D12_BLEND_DESC blend_desc;
gfloat blend_factor[4];
std::recursive_mutex lock;
/* properties */
gint xpos = DEFAULT_PAD_XPOS;
gint ypos = DEFAULT_PAD_YPOS;
gint width = DEFAULT_PAD_WIDTH;
gint height = DEFAULT_PAD_HEIGHT;
gdouble alpha = DEFAULT_PAD_ALPHA;
GstD3D12CompositorOperator op = DEFAULT_PAD_OPERATOR;
GstD3D12CompositorSizingPolicy sizing_policy = DEFAULT_PAD_SIZING_POLICY;
};
struct _GstD3D12CompositorPad
{
GstVideoAggregatorConvertPad parent;
GstD3D12CompositorPadPrivate *priv;
};
struct VertexData
{
struct
{
FLOAT x;
FLOAT y;
FLOAT z;
} position;
struct
{
FLOAT u;
FLOAT v;
} texture;
};
/* *INDENT-OFF* */
struct BackgroundRender
{
BackgroundRender (GstD3D12Device * dev, const GstVideoInfo & info)
{
event_handle = CreateEventEx (nullptr, nullptr, 0, EVENT_ALL_ACCESS);
device = (GstD3D12Device *) gst_object_ref (dev);
auto device_handle = gst_d3d12_device_get_device_handle (device);
ca_pool = gst_d3d12_command_allocator_pool_new (device_handle,
D3D12_COMMAND_LIST_TYPE_DIRECT);
D3D12_VERSIONED_ROOT_SIGNATURE_DESC rs_desc = { };
CD3DX12_VERSIONED_ROOT_SIGNATURE_DESC::Init_1_0 (rs_desc,
0, nullptr, 0, nullptr, g_rs_flags);
ComPtr < ID3DBlob > rs_blob;
ComPtr < ID3DBlob > error_blob;
auto hr = D3DX12SerializeVersionedRootSignature (&rs_desc,
D3D_ROOT_SIGNATURE_VERSION_1_1, &rs_blob, &error_blob);
if (!gst_d3d12_result (hr, device)) {
const gchar *error_msg = nullptr;
if (error_blob)
error_msg = (const gchar *) error_blob->GetBufferPointer ();
GST_ERROR_OBJECT (device, "Couldn't serialize root signature, error: %s",
GST_STR_NULL (error_msg));
return;
}
hr = device_handle->CreateRootSignature (0, rs_blob->GetBufferPointer (),
rs_blob->GetBufferSize (), IID_PPV_ARGS (&rs));
if (!gst_d3d12_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't create root signature");
return;
}
GstD3D12Format format;
gst_d3d12_device_get_format (device, GST_VIDEO_INFO_FORMAT (&info),
&format);
D3D12_INPUT_ELEMENT_DESC input_desc;
input_desc.SemanticName = "POSITION";
input_desc.SemanticIndex = 0;
input_desc.Format = DXGI_FORMAT_R32G32B32_FLOAT;
input_desc.InputSlot = 0;
input_desc.AlignedByteOffset = D3D12_APPEND_ALIGNED_ELEMENT;
input_desc.InputSlotClass = D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA;
input_desc.InstanceDataStepRate = 0;
GstD3DShaderByteCode vs_code;
if (!gst_d3d_plugin_shader_get_vs_blob (GST_D3D_PLUGIN_VS_POS,
GST_D3D_SM_5_0, &vs_code)) {
GST_ERROR_OBJECT (device, "Couldn't get vs bytecode");
return;
}
GstD3DShaderByteCode ps_code;
GstD3DPluginPS ps_type;
if (GST_VIDEO_INFO_IS_RGB (&info))
ps_type = GST_D3D_PLUGIN_PS_CHECKER_RGB;
else if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_VUYA)
ps_type = GST_D3D_PLUGIN_PS_CHECKER_VUYA;
else
ps_type = GST_D3D_PLUGIN_PS_CHECKER_LUMA;
if (!gst_d3d_plugin_shader_get_ps_blob (ps_type,
GST_D3D_SM_5_0, &ps_code)) {
GST_ERROR_OBJECT (device, "Couldn't get ps bytecode");
return;
}
D3D12_GRAPHICS_PIPELINE_STATE_DESC pso_desc = { };
pso_desc.pRootSignature = rs.Get ();
pso_desc.VS.BytecodeLength = vs_code.byte_code_len;
pso_desc.VS.pShaderBytecode = vs_code.byte_code;
pso_desc.PS.BytecodeLength = ps_code.byte_code_len;
pso_desc.PS.pShaderBytecode = ps_code.byte_code;
pso_desc.BlendState = CD3DX12_BLEND_DESC (D3D12_DEFAULT);
pso_desc.SampleMask = UINT_MAX;
pso_desc.RasterizerState = CD3DX12_RASTERIZER_DESC (D3D12_DEFAULT);
pso_desc.RasterizerState.CullMode = D3D12_CULL_MODE_NONE;
pso_desc.DepthStencilState.DepthEnable = FALSE;
pso_desc.DepthStencilState.StencilEnable = FALSE;
pso_desc.InputLayout.pInputElementDescs = &input_desc;
pso_desc.InputLayout.NumElements = 1;
pso_desc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
pso_desc.NumRenderTargets = 1;
pso_desc.RTVFormats[0] = format.resource_format[0];
pso_desc.SampleDesc.Count = 1;
hr = device_handle->CreateGraphicsPipelineState (&pso_desc,
IID_PPV_ARGS (&pso));
if (!gst_d3d12_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't create pso");
return;
}
VertexData vertex_data[4];
const WORD indices[6] = { 0, 1, 2, 3, 0, 2 };
/* 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;
D3D12_HEAP_PROPERTIES heap_prop =
CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_UPLOAD);
D3D12_RESOURCE_DESC buffer_desc =
CD3DX12_RESOURCE_DESC::Buffer (sizeof (VertexData) * 4 +
sizeof (indices));
hr = device_handle->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED, &buffer_desc,
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr, IID_PPV_ARGS (&vertex_index_upload));
if (!gst_d3d12_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't create vertex upload buf");
return;
}
guint8 *data;
CD3DX12_RANGE range (0, 0);
hr = vertex_index_upload->Map (0, &range, (void **) &data);
if (!gst_d3d12_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't map index buffer");
return;
}
memcpy (data, vertex_data, sizeof (VertexData) * 4);
memcpy (data + sizeof (VertexData) * 4, indices, sizeof (indices));
vertex_index_upload->Unmap (0, nullptr);
heap_prop = CD3DX12_HEAP_PROPERTIES (D3D12_HEAP_TYPE_DEFAULT);
hr = device_handle->CreateCommittedResource (&heap_prop,
D3D12_HEAP_FLAG_CREATE_NOT_ZEROED, &buffer_desc,
D3D12_RESOURCE_STATE_COMMON, nullptr, IID_PPV_ARGS (&vertex_index_buf));
if (!gst_d3d12_result (hr, device)) {
GST_ERROR_OBJECT (device, "Couldn't create index buffer");
return;
}
vbv.BufferLocation = vertex_index_buf->GetGPUVirtualAddress ();
vbv.SizeInBytes = sizeof (VertexData) * 4;
vbv.StrideInBytes = sizeof (VertexData);
ibv.BufferLocation = vbv.BufferLocation + vbv.SizeInBytes;
ibv.SizeInBytes = sizeof (indices);
ibv.Format = DXGI_FORMAT_R16_UINT;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
viewport.Width = info.width;
viewport.Height = info.height;
viewport.MinDepth = 0;
viewport.MaxDepth = 1;
scissor_rect.left = 0;
scissor_rect.top = 0;
scissor_rect.right = info.width;
scissor_rect.bottom = info.height;
rtv_inc_size =
device_handle->GetDescriptorHandleIncrementSize
(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
is_valid = true;
}
BackgroundRender () = delete;
~BackgroundRender ()
{
gst_d3d12_device_fence_wait (device, D3D12_COMMAND_LIST_TYPE_DIRECT,
fence_val, event_handle);
CloseHandle (event_handle);
gst_clear_object (&ca_pool);
gst_clear_object (&device);
}
GstD3D12Device *device;
ComPtr < ID3D12RootSignature > rs;
ComPtr < ID3D12PipelineState > pso;
ComPtr < ID3D12Resource > vertex_index_buf;
ComPtr < ID3D12Resource > vertex_index_upload;
D3D12_VERTEX_BUFFER_VIEW vbv;
D3D12_INDEX_BUFFER_VIEW ibv;
ComPtr < ID3D12GraphicsCommandList > cl;
GstD3D12CommandAllocatorPool *ca_pool;
D3D12_VIEWPORT viewport;
D3D12_RECT scissor_rect;
guint rtv_inc_size;
bool need_upload = true;
bool is_valid = false;
HANDLE event_handle;
guint64 fence_val = 0;
};
/* *INDENT-ON* */
struct ClearColor
{
/* [rtv][colors] */
FLOAT color[4][4];
};
struct GStD3D12CompositorPrivate
{
GStD3D12CompositorPrivate ()
{
fence_data_pool = gst_d3d12_fence_data_pool_new ();
gst_video_info_init (&negotiated_info);
}
~GStD3D12CompositorPrivate ()
{
gst_clear_buffer (&fallback_buf);
gst_clear_object (&fence_data_pool);
}
GstBuffer *fallback_buf = nullptr;
GstBuffer *generated_output_buf = nullptr;
std::unique_ptr < BackgroundRender > bg_render;
/* black/white/transparent */
ClearColor clear_color[3];
GstD3D12FenceDataPool *fence_data_pool;
std::vector < D3D12_CPU_DESCRIPTOR_HANDLE > rtv_handles;
std::queue < guint64 > scheduled;
GstVideoInfo negotiated_info;
gboolean downstream_supports_d3d12 = FALSE;
std::recursive_mutex lock;
/* properties */
gint adapter = DEFAULT_ADAPTER;
GstD3D12CompositorBackground background = DEFAULT_BACKGROUND;
};
struct _GstD3D12Compositor
{
GstVideoAggregator parent;
GstD3D12Device *device;
GStD3D12CompositorPrivate *priv;
};
static void gst_d3d12_compositor_pad_finalize (GObject * object);
static void gst_d3d12_compositor_pad_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d12_compositor_pad_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void
gst_d3d12_compositor_pad_update_conversion_info (GstVideoAggregatorPad * pad);
static void
gst_d3d12_compositor_pad_prepare_frame_start (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstBuffer * buffer,
GstVideoFrame * prepared_frame);
static void
gst_d3d12_compositor_pad_prepare_frame_finish (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame);
static void gst_d3d12_compositor_pad_clean_frame (GstVideoAggregatorPad * vpad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame);
#define gst_d3d12_compositor_pad_parent_class parent_pad_class
G_DEFINE_TYPE (GstD3D12CompositorPad, gst_d3d12_compositor_pad,
GST_TYPE_VIDEO_AGGREGATOR_PAD);
static void
gst_d3d12_compositor_pad_class_init (GstD3D12CompositorPadClass * klass)
{
auto object_class = G_OBJECT_CLASS (klass);
auto 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->finalize = gst_d3d12_compositor_pad_finalize;
object_class->set_property = gst_d3d12_compositor_pad_set_property;
object_class->get_property = gst_d3d12_compositor_pad_get_property;
g_object_class_install_property (object_class, PROP_PAD_XPOS,
g_param_spec_int ("xpos", "X Position", "X position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_XPOS, param_flags));
g_object_class_install_property (object_class, PROP_PAD_YPOS,
g_param_spec_int ("ypos", "Y Position", "Y position of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_YPOS, param_flags));
g_object_class_install_property (object_class, PROP_PAD_WIDTH,
g_param_spec_int ("width", "Width", "Width of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_WIDTH, param_flags));
g_object_class_install_property (object_class, PROP_PAD_HEIGHT,
g_param_spec_int ("height", "Height", "Height of the picture",
G_MININT, G_MAXINT, DEFAULT_PAD_HEIGHT, param_flags));
g_object_class_install_property (object_class, PROP_PAD_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Alpha of the picture", 0.0, 1.0,
DEFAULT_PAD_ALPHA, param_flags));
g_object_class_install_property (object_class, PROP_PAD_OPERATOR,
g_param_spec_enum ("operator", "Operator",
"Blending operator to use for blending this pad over the previous ones",
GST_TYPE_D3D12_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_D3D12_COMPOSITOR_SIZING_POLICY, DEFAULT_PAD_SIZING_POLICY,
param_flags));
vagg_pad_class->update_conversion_info =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_pad_update_conversion_info);
vagg_pad_class->prepare_frame_start =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_pad_prepare_frame_start);
vagg_pad_class->prepare_frame_finish =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_pad_prepare_frame_finish);
vagg_pad_class->clean_frame =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_pad_clean_frame);
gst_type_mark_as_plugin_api (GST_TYPE_D3D12_COMPOSITOR_OPERATOR,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D12_COMPOSITOR_SIZING_POLICY,
(GstPluginAPIFlags) 0);
}
static void
gst_d3d12_compositor_pad_init (GstD3D12CompositorPad * pad)
{
pad->priv = new GstD3D12CompositorPadPrivate ();
}
static void
gst_d3d12_compositor_pad_finalize (GObject * object)
{
auto self = GST_D3D12_COMPOSITOR_PAD (object);
delete self->priv;
G_OBJECT_CLASS (parent_pad_class)->finalize (object);
}
static void
gst_d3d12_compositor_pad_update_position (GstD3D12CompositorPad * pad,
gint * old, const GValue * value)
{
auto priv = pad->priv;
gint tmp = g_value_get_int (value);
if (*old != tmp) {
*old = tmp;
priv->position_updated = TRUE;
}
}
static void
gst_d3d12_compositor_pad_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
auto pad = GST_D3D12_COMPOSITOR_PAD (object);
auto priv = pad->priv;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
switch (prop_id) {
case PROP_PAD_XPOS:
gst_d3d12_compositor_pad_update_position (pad, &priv->xpos, value);
break;
case PROP_PAD_YPOS:
gst_d3d12_compositor_pad_update_position (pad, &priv->ypos, value);
break;
case PROP_PAD_WIDTH:
gst_d3d12_compositor_pad_update_position (pad, &priv->width, value);
break;
case PROP_PAD_HEIGHT:
gst_d3d12_compositor_pad_update_position (pad, &priv->height, value);
break;
case PROP_PAD_ALPHA:{
gdouble alpha = g_value_get_double (value);
if (priv->alpha != alpha) {
priv->alpha_updated = TRUE;
priv->alpha = alpha;
}
break;
}
case PROP_PAD_OPERATOR:{
GstD3D12CompositorOperator op =
(GstD3D12CompositorOperator) g_value_get_enum (value);
if (op != priv->op) {
priv->op = op;
priv->blend_desc_updated = TRUE;
}
break;
}
case PROP_PAD_SIZING_POLICY:{
GstD3D12CompositorSizingPolicy policy =
(GstD3D12CompositorSizingPolicy) g_value_get_enum (value);
if (priv->sizing_policy != policy) {
priv->sizing_policy = policy;
priv->position_updated = TRUE;
}
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d12_compositor_pad_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
auto pad = GST_D3D12_COMPOSITOR_PAD (object);
auto priv = pad->priv;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
switch (prop_id) {
case PROP_PAD_XPOS:
g_value_set_int (value, priv->xpos);
break;
case PROP_PAD_YPOS:
g_value_set_int (value, priv->ypos);
break;
case PROP_PAD_WIDTH:
g_value_set_int (value, priv->width);
break;
case PROP_PAD_HEIGHT:
g_value_set_int (value, priv->height);
break;
case PROP_PAD_ALPHA:
g_value_set_double (value, priv->alpha);
break;
case PROP_PAD_OPERATOR:
g_value_set_enum (value, priv->op);
break;
case PROP_PAD_SIZING_POLICY:
g_value_set_enum (value, priv->sizing_policy);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d12_compositor_pad_update_conversion_info (GstVideoAggregatorPad * pad)
{
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
priv->position_updated = TRUE;
}
static void
gst_d3d12_compositor_pad_get_output_size (GstD3D12CompositorPad * pad,
gint out_par_n, gint out_par_d, gint * width, gint * height,
gint * x_offset, gint * y_offset)
{
auto priv = pad->priv;
auto vagg_pad = GST_VIDEO_AGGREGATOR_PAD (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 (pad, "Have no caps yet");
return;
}
std::lock_guard < std::recursive_mutex > lk (priv->lock);
pad_width = priv->width <= 0 ? GST_VIDEO_INFO_WIDTH (&vagg_pad->info) :
priv->width;
pad_height = priv->height <= 0 ? GST_VIDEO_INFO_HEIGHT (&vagg_pad->info) :
priv->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 (pad, "Cannot calculate display aspect ratio");
return;
}
GST_TRACE_OBJECT (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 (priv->sizing_policy) {
case GST_D3D12_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_D3D12_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 (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 (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_d3d12_compositor_pad_check_frame_obscured (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg)
{
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
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)
*/
std::lock_guard < std::recursive_mutex > lk (priv->lock);
if (priv->alpha == 0)
return TRUE;
gst_d3d12_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 (priv->xpos + x_offset, priv->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_d3d12_compositor_pad_setup_converter (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg)
{
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
auto self = GST_D3D12_COMPOSITOR (vagg);
gint width, height;
GstVideoInfo *info = &vagg->info;
GstVideoRectangle frame_rect;
gboolean output_has_alpha_comp = FALSE;
gint x_offset, y_offset;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
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 (priv->ctx) {
if (GST_VIDEO_INFO_FORMAT (&priv->ctx->info) !=
GST_VIDEO_INFO_FORMAT (&pad->info)) {
priv->ctx = nullptr;
}
}
if (!priv->ctx || priv->blend_desc_updated) {
switch (priv->op) {
case GST_D3D12_COMPOSITOR_OPERATOR_SOURCE:
priv->blend_desc.RenderTarget[0] = g_blend_source;
break;
case GST_D3D12_COMPOSITOR_OPERATOR_OVER:
if (output_has_alpha_comp)
priv->blend_desc.RenderTarget[0] = g_blend_over;
else
priv->blend_desc.RenderTarget[0] = g_blend_over_factor;
break;
default:
g_assert_not_reached ();
return FALSE;
}
}
if (!priv->ctx || priv->alpha_updated) {
for (guint i = 0; i < 4; i++)
priv->blend_factor[i] = priv->alpha;
}
if (!priv->ctx) {
auto ctx = std::make_unique < PadContext > (self->device);
ctx->info = pad->info;
ctx->conv = gst_d3d12_converter_new (self->device, nullptr, &pad->info,
info, &priv->blend_desc, priv->blend_factor, nullptr);
if (!ctx->conv) {
GST_ERROR_OBJECT (pad, "Couldn't create converter");
return FALSE;
}
priv->ctx = std::move (ctx);
}
if (priv->ctx->fence_val == 0 || priv->alpha_updated) {
g_object_set (priv->ctx->conv, "alpha", priv->alpha, nullptr);
gst_d3d12_converter_update_blend_state (priv->ctx->conv,
&priv->blend_desc, priv->blend_factor);
}
priv->alpha_updated = FALSE;
priv->blend_desc_updated = FALSE;
if (priv->ctx->fence_val != 0 && !priv->position_updated)
return TRUE;
gst_d3d12_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 (priv->xpos + x_offset, priv->ypos + y_offset,
width, height, GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info));
#ifndef GST_DISABLE_GST_DEBUG
guint zorder = 0;
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",
priv->xpos, priv->ypos, zorder, priv->width, priv->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
priv->position_updated = FALSE;
g_object_set (priv->ctx->conv, "dest-x", frame_rect.x,
"dest-y", frame_rect.y, "dest-width", frame_rect.w,
"dest-height", frame_rect.h, nullptr);
return TRUE;
}
static gboolean
gst_d3d12_compositor_preprare_func (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstBuffer * buffer,
GstVideoFrame * prepared_frame)
{
auto self = GST_D3D12_COMPOSITOR (vagg);
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
GST_LOG_OBJECT (pad, "Building command list");
if (!self->priv->generated_output_buf) {
GST_ERROR_OBJECT (cpad, "Have no generated output buf");
return FALSE;
}
/* Skip this frame */
if (gst_d3d12_compositor_pad_check_frame_obscured (pad, vagg))
return TRUE;
if (!gst_d3d12_compositor_pad_setup_converter (pad, vagg))
return FALSE;
gint x, y, w, h;
auto crop_meta = gst_buffer_get_video_crop_meta (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_assert (priv->ctx);
g_object_set (priv->ctx->conv, "src-x", x, "src-y", y, "src-width", w,
"src-height", h, nullptr);
GstD3D12CommandAllocator *gst_ca;
if (!gst_d3d12_command_allocator_pool_acquire (priv->ctx->ca_pool, &gst_ca)) {
GST_ERROR_OBJECT (cpad, "Couldn't acquire command allocator");
return FALSE;
}
GstD3D12FenceData *fence_data;
gst_d3d12_fence_data_pool_acquire (self->priv->fence_data_pool, &fence_data);
gst_d3d12_fence_data_push (fence_data, FENCE_NOTIFY_MINI_OBJECT (gst_ca));
auto ca = gst_d3d12_command_allocator_get_handle (gst_ca);
auto hr = ca->Reset ();
if (!gst_d3d12_result (hr, priv->ctx->device)) {
GST_ERROR_OBJECT (cpad, "Couldn't reset command allocator");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
if (!priv->ctx->cl) {
auto device = gst_d3d12_device_get_device_handle (priv->ctx->device);
hr = device->CreateCommandList (0, D3D12_COMMAND_LIST_TYPE_DIRECT,
ca, nullptr, IID_PPV_ARGS (&priv->ctx->cl));
if (!gst_d3d12_result (hr, priv->ctx->device)) {
GST_ERROR_OBJECT (cpad, "Couldn't create command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
} else {
hr = priv->ctx->cl->Reset (ca, nullptr);
if (!gst_d3d12_result (hr, priv->ctx->device)) {
GST_ERROR_OBJECT (self, "Couldn't reset command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
}
if (!gst_d3d12_converter_convert_buffer (priv->ctx->conv,
buffer, self->priv->generated_output_buf, fence_data,
priv->ctx->cl.Get (), TRUE)) {
GST_ERROR_OBJECT (self, "Couldn't build command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
hr = priv->ctx->cl->Close ();
if (!gst_d3d12_result (hr, priv->ctx->device)) {
GST_ERROR_OBJECT (self, "Couldn't close command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
prepared_frame->buffer = buffer;
priv->ctx->fence_data = fence_data;
GST_LOG_OBJECT (pad, "Command list prepared");
return TRUE;
}
static void
gst_d3d12_compositor_pad_prepare_frame_start (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstBuffer * buffer,
GstVideoFrame * prepared_frame)
{
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
GST_LOG_OBJECT (cpad, "Prepare start");
priv->prepare_rst = std::async (std::launch::async,
gst_d3d12_compositor_preprare_func, pad, vagg, buffer, prepared_frame);
}
static void
gst_d3d12_compositor_pad_prepare_frame_finish (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame)
{
/* Will wait on aggregate() function */
}
static void
gst_d3d12_compositor_pad_clean_frame (GstVideoAggregatorPad * pad,
GstVideoAggregator * vagg, GstVideoFrame * prepared_frame)
{
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto priv = cpad->priv;
if (priv->prepare_rst.valid ()) {
GST_WARNING_OBJECT (cpad, "Async task still pending");
priv->prepare_rst.get ();
}
memset (prepared_frame, 0, sizeof (GstVideoFrame));
if (priv->ctx && priv->ctx->fence_data) {
gst_d3d12_device_set_fence_notify (priv->ctx->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, priv->ctx->fence_val,
FENCE_NOTIFY_MINI_OBJECT (priv->ctx->fence_data));
priv->ctx->fence_data = nullptr;
}
}
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_D3D12_MEMORY, GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (GST_D3D12_ALL_FORMATS)));
/* formats we can output without conversion.
* Excludes 10/12 bits planar YUV (needs bitshift) and
* AYUV/AYUV64 (d3d12 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 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_D3D12_MEMORY, COMPOSITOR_SRC_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (COMPOSITOR_SRC_FORMATS)));
static void gst_d3d12_compositor_child_proxy_init (gpointer g_iface,
gpointer iface_data);
static void gst_d3d12_compositor_finalize (GObject * object);
static void gst_d3d12_compositor_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_d3d12_compositor_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstPad *gst_d3d12_compositor_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps);
static void gst_d3d12_compositor_release_pad (GstElement * element,
GstPad * pad);
static void gst_d3d12_compositor_set_context (GstElement * element,
GstContext * context);
static gboolean gst_d3d12_compositor_start (GstAggregator * agg);
static gboolean gst_d3d12_compositor_stop (GstAggregator * agg);
static gboolean gst_d3d12_compositor_sink_query (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * query);
static gboolean gst_d3d12_compositor_src_query (GstAggregator * agg,
GstQuery * query);
static GstCaps *gst_d3d12_compositor_fixate_src_caps (GstAggregator * agg,
GstCaps * caps);
static gboolean gst_d3d12_compositor_negotiated_src_caps (GstAggregator * agg,
GstCaps * caps);
static gboolean
gst_d3d12_compositor_propose_allocation (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query);
static gboolean gst_d3d12_compositor_decide_allocation (GstAggregator * agg,
GstQuery * query);
static GstFlowReturn
gst_d3d12_compositor_aggregate_frames (GstVideoAggregator * vagg,
GstBuffer * outbuf);
static GstFlowReturn
gst_d3d12_compositor_create_output_buffer (GstVideoAggregator * vagg,
GstBuffer ** outbuffer);
#define gst_d3d12_compositor_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstD3D12Compositor, gst_d3d12_compositor,
GST_TYPE_VIDEO_AGGREGATOR, G_IMPLEMENT_INTERFACE (GST_TYPE_CHILD_PROXY,
gst_d3d12_compositor_child_proxy_init));
static void
gst_d3d12_compositor_class_init (GstD3D12CompositorClass * klass)
{
auto object_class = G_OBJECT_CLASS (klass);
auto element_class = GST_ELEMENT_CLASS (klass);
auto agg_class = GST_AGGREGATOR_CLASS (klass);
auto vagg_class = GST_VIDEO_AGGREGATOR_CLASS (klass);
object_class->finalize = gst_d3d12_compositor_finalize;
object_class->set_property = gst_d3d12_compositor_set_property;
object_class->get_property = gst_d3d12_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_D3D12_COMPOSITOR_BACKGROUND,
DEFAULT_BACKGROUND,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (object_class,
PROP_IGNORE_INACTIVE_PADS, g_param_spec_boolean ("ignore-inactive-pads",
"Ignore inactive pads",
"Avoid timing out waiting for inactive pads", FALSE,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
element_class->request_new_pad =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_request_new_pad);
element_class->release_pad =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_release_pad);
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_set_context);
agg_class->start = GST_DEBUG_FUNCPTR (gst_d3d12_compositor_start);
agg_class->stop = GST_DEBUG_FUNCPTR (gst_d3d12_compositor_stop);
agg_class->sink_query = GST_DEBUG_FUNCPTR (gst_d3d12_compositor_sink_query);
agg_class->src_query = GST_DEBUG_FUNCPTR (gst_d3d12_compositor_src_query);
agg_class->fixate_src_caps =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_fixate_src_caps);
agg_class->negotiated_src_caps =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_negotiated_src_caps);
agg_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_propose_allocation);
agg_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_decide_allocation);
vagg_class->aggregate_frames =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_aggregate_frames);
vagg_class->create_output_buffer =
GST_DEBUG_FUNCPTR (gst_d3d12_compositor_create_output_buffer);
gst_element_class_add_static_pad_template_with_gtype (element_class,
&sink_template, GST_TYPE_D3D12_COMPOSITOR_PAD);
gst_element_class_add_static_pad_template_with_gtype (element_class,
&src_template, GST_TYPE_AGGREGATOR_PAD);
gst_element_class_set_static_metadata (element_class, "Direct3D12 Compositor",
"Filter/Editor/Video/Compositor", "A Direct3D12 compositor",
"Seungha Yang <seungha@centricular.com>");
gst_type_mark_as_plugin_api (GST_TYPE_D3D12_COMPOSITOR_BACKGROUND,
(GstPluginAPIFlags) 0);
gst_type_mark_as_plugin_api (GST_TYPE_D3D12_COMPOSITOR_PAD,
(GstPluginAPIFlags) 0);
GST_DEBUG_CATEGORY_INIT (gst_d3d12_compositor_debug,
"d3d12compositor", 0, "d3d12compositor element");
}
static void
gst_d3d12_compositor_init (GstD3D12Compositor * self)
{
self->priv = new GStD3D12CompositorPrivate ();
}
static void
gst_d3d12_compositor_finalize (GObject * object)
{
auto self = GST_D3D12_COMPOSITOR (object);
delete self->priv;
gst_clear_object (&self->device);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_d3d12_compositor_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
auto self = GST_D3D12_COMPOSITOR (object);
auto priv = self->priv;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
switch (prop_id) {
case PROP_ADAPTER:
priv->adapter = g_value_get_int (value);
break;
case PROP_BACKGROUND:
priv->background =
(GstD3D12CompositorBackground) g_value_get_enum (value);
break;
case PROP_IGNORE_INACTIVE_PADS:
gst_aggregator_set_ignore_inactive_pads (GST_AGGREGATOR (object),
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_d3d12_compositor_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
auto self = GST_D3D12_COMPOSITOR (object);
auto priv = self->priv;
std::lock_guard < std::recursive_mutex > lk (priv->lock);
switch (prop_id) {
case PROP_ADAPTER:
g_value_set_int (value, priv->adapter);
break;
case PROP_BACKGROUND:
g_value_set_enum (value, priv->background);
break;
case PROP_IGNORE_INACTIVE_PADS:
g_value_set_boolean (value,
gst_aggregator_get_ignore_inactive_pads (GST_AGGREGATOR (object)));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GObject *
gst_d3d12_compositor_child_proxy_get_child_by_index (GstChildProxy * proxy,
guint index)
{
auto self = GST_D3D12_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_d3d12_compositor_child_proxy_get_children_count (GstChildProxy * proxy)
{
auto self = GST_D3D12_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_d3d12_compositor_child_proxy_init (gpointer g_iface, gpointer iface_data)
{
GstChildProxyInterface *iface = (GstChildProxyInterface *) g_iface;
iface->get_child_by_index =
gst_d3d12_compositor_child_proxy_get_child_by_index;
iface->get_children_count =
gst_d3d12_compositor_child_proxy_get_children_count;
}
static GstPad *
gst_d3d12_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 void
gst_d3d12_compositor_release_pad (GstElement * element, GstPad * pad)
{
auto self = GST_D3D12_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_d3d12_compositor_set_context (GstElement * element, GstContext * context)
{
auto self = GST_D3D12_COMPOSITOR (element);
auto priv = self->priv;
{
std::lock_guard < std::recursive_mutex > lk (priv->lock);
gst_d3d12_handle_set_context (element, context, priv->adapter,
&self->device);
}
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_d3d12_compositor_start (GstAggregator * agg)
{
auto self = GST_D3D12_COMPOSITOR (agg);
auto priv = self->priv;
{
std::lock_guard < std::recursive_mutex > lk (priv->lock);
if (!gst_d3d12_ensure_element_data (GST_ELEMENT_CAST (self),
priv->adapter, &self->device)) {
GST_ERROR_OBJECT (self, "Failed to get D3D12 device");
return FALSE;
}
}
priv->scheduled = { };
return GST_AGGREGATOR_CLASS (parent_class)->start (agg);
}
static gboolean
gst_d3d12_compositor_stop (GstAggregator * agg)
{
auto self = GST_D3D12_COMPOSITOR (agg);
auto priv = self->priv;
{
std::lock_guard < std::recursive_mutex > lk (priv->lock);
priv->bg_render = nullptr;
gst_clear_object (&self->device);
}
return GST_AGGREGATOR_CLASS (parent_class)->stop (agg);
}
static GstCaps *
gst_d3d12_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_d3d12_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_d3d12_compositor_sink_query (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * query)
{
auto self = GST_D3D12_COMPOSITOR (agg);
auto priv = self->priv;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
std::lock_guard < std::recursive_mutex > lk (priv->lock);
if (gst_d3d12_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_d3d12_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_d3d12_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_d3d12_compositor_src_query (GstAggregator * agg, GstQuery * query)
{
auto self = GST_D3D12_COMPOSITOR (agg);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d12_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_d3d12_compositor_fixate_src_caps (GstAggregator * agg, GstCaps * caps)
{
auto 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) {
auto vaggpad = GST_VIDEO_AGGREGATOR_PAD (l->data);
auto cpad = GST_D3D12_COMPOSITOR_PAD (vaggpad);
auto priv = cpad->priv;
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_d3d12_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 (priv->xpos + 2 * x_offset, 0);
this_height = height + MAX (priv->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;
}
if (best_width <= 0 || best_height <= 0) {
best_width = 320;
best_height = 240;
}
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_d3d12_compositor_calculate_background_color (GstD3D12Compositor * self,
const GstVideoInfo * info)
{
auto priv = self->priv;
GstD3D12ColorMatrix 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_d3d12_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_d3d12_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++) {
ClearColor *clear_color = &priv->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_d3d12_compositor_clear_pad_context (GstD3D12Compositor * self,
GstD3D12CompositorPad * cpad, gpointer user_data)
{
auto priv = cpad->priv;
priv->ctx = nullptr;
return TRUE;
}
static gboolean
gst_d3d12_compositor_negotiated_src_caps (GstAggregator * agg, GstCaps * caps)
{
auto self = GST_D3D12_COMPOSITOR (agg);
auto priv = self->priv;
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps)) {
GST_ERROR_OBJECT (self, "Failed to convert caps to info");
return FALSE;
}
auto features = gst_caps_get_features (caps, 0);
if (features
&& gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
GST_DEBUG_OBJECT (self, "Negotiated with D3D12 memory caps");
priv->downstream_supports_d3d12 = TRUE;
} else {
GST_DEBUG_OBJECT (self, "Negotiated with system memory caps");
priv->downstream_supports_d3d12 = FALSE;
}
if (GST_VIDEO_INFO_FORMAT (&info) !=
GST_VIDEO_INFO_FORMAT (&priv->negotiated_info)) {
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (self),
(GstElementForeachPadFunc) gst_d3d12_compositor_clear_pad_context,
nullptr);
priv->bg_render = nullptr;
}
gst_clear_buffer (&priv->fallback_buf);
priv->negotiated_info = info;
gst_d3d12_compositor_calculate_background_color (self, &info);
if (!priv->bg_render) {
auto bg_render = std::make_unique < BackgroundRender > (self->device, info);
if (!bg_render->is_valid) {
GST_ERROR_OBJECT (self, "Couldn't configure background render object");
return FALSE;
}
priv->bg_render = std::move (bg_render);
} else {
priv->bg_render->viewport.Width = info.width;
priv->bg_render->viewport.Height = info.height;
priv->bg_render->scissor_rect.right = info.width;
priv->bg_render->scissor_rect.bottom = info.height;
}
if (!priv->downstream_supports_d3d12) {
auto pool = gst_d3d12_buffer_pool_new (self->device);
auto config = gst_buffer_pool_get_config (pool);
auto params = gst_d3d12_allocation_params_new (self->device, &info,
GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET |
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS, D3D12_HEAP_FLAG_NONE);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
gst_buffer_pool_config_set_params (config, caps, info.size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (self, "Couldn't set pool config");
gst_object_unref (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;
}
gst_buffer_pool_acquire_buffer (pool, &priv->fallback_buf, nullptr);
gst_buffer_pool_set_active (pool, FALSE);
gst_object_unref (pool);
if (!priv->fallback_buf) {
GST_ERROR_OBJECT (self, "Couldn't acquire fallback buf");
return FALSE;
}
}
return GST_AGGREGATOR_CLASS (parent_class)->negotiated_src_caps (agg, caps);
}
static gboolean
gst_d3d12_compositor_propose_allocation (GstAggregator * agg,
GstAggregatorPad * pad, GstQuery * decide_query, GstQuery * query)
{
auto self = GST_D3D12_COMPOSITOR (agg);
GstVideoInfo info;
GstBufferPool *pool;
GstCaps *caps;
gboolean is_d3d12 = FALSE;
guint size;
gst_query_parse_allocation (query, &caps, nullptr);
if (!caps)
return FALSE;
if (!gst_video_info_from_caps (&info, caps))
return FALSE;
auto features = gst_caps_get_features (caps, 0);
if (gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
GST_DEBUG_OBJECT (pad, "Upstream support d3d12 memory");
is_d3d12 = TRUE;
}
if (gst_query_get_n_allocation_pools (query) == 0) {
if (is_d3d12)
pool = gst_d3d12_buffer_pool_new (self->device);
else
pool = gst_video_buffer_pool_new ();
if (!pool) {
GST_ERROR_OBJECT (self, "Failed to create buffer pool");
return FALSE;
}
auto 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_d3d12) {
auto params = gst_d3d12_allocation_params_new (self->device,
&info, GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET |
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS, D3D12_HEAP_FLAG_NONE);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (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;
}
/* d3d12 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);
if (is_d3d12) {
gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE,
nullptr);
}
return TRUE;
}
static gboolean
gst_d3d12_compositor_decide_allocation (GstAggregator * agg, GstQuery * query)
{
auto self = GST_D3D12_COMPOSITOR (agg);
auto priv = self->priv;
GstCaps *caps;
GstBufferPool *pool = nullptr;
guint n, size, min, max;
GstVideoInfo info;
gboolean use_d3d12_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_d3d12_pool = priv->downstream_supports_d3d12;
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_d3d12_pool) {
if (!GST_IS_D3D12_BUFFER_POOL (pool)) {
GST_DEBUG_OBJECT (self,
"Downstream pool is not d3d12, will create new one");
gst_clear_object (&pool);
} else {
GstD3D12BufferPool *dpool = GST_D3D12_BUFFER_POOL (pool);
if (!gst_d3d12_device_is_equal (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_d3d12_pool)
pool = gst_d3d12_buffer_pool_new (self->device);
else
pool = gst_video_buffer_pool_new ();
min = 0;
max = 0;
}
auto 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_d3d12_pool) {
auto params = gst_buffer_pool_config_get_d3d12_allocation_params (config);
if (!params) {
params = gst_d3d12_allocation_params_new (self->device, &info,
GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET |
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS, D3D12_HEAP_FLAG_NONE);
} else {
gst_d3d12_allocation_params_set_resource_flags (params,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET |
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
}
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
}
gst_buffer_pool_set_config (pool, config);
/* d3d12 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;
}
static gboolean
gst_d3d12_compositor_draw_background (GstD3D12Compositor * self)
{
auto priv = self->priv;
ClearColor *color = &priv->clear_color[0];
auto bg_render = priv->bg_render.get ();
auto & rtv_handles = priv->rtv_handles;
std::vector < D3D12_RECT > rtv_rects;
rtv_handles.clear ();
for (guint i = 0; i < gst_buffer_n_memory (priv->generated_output_buf); i++) {
auto mem = (GstD3D12Memory *)
gst_buffer_peek_memory (priv->generated_output_buf, i);
auto num_planes = gst_d3d12_memory_get_plane_count (mem);
auto rtv_heap = gst_d3d12_memory_get_render_target_view_heap (mem);
if (!rtv_heap) {
GST_ERROR_OBJECT (self, "Couldn't get rtv heap");
return FALSE;
}
auto cpu_handle =
CD3DX12_CPU_DESCRIPTOR_HANDLE (GetCPUDescriptorHandleForHeapStart
(rtv_heap));
for (guint plane = 0; plane < num_planes; plane++) {
D3D12_RECT rect = { };
gst_d3d12_memory_get_plane_rectangle (mem, plane, &rect);
rtv_rects.push_back (rect);
rtv_handles.push_back (cpu_handle);
cpu_handle.Offset (bg_render->rtv_inc_size);
}
}
GstD3D12CommandAllocator *gst_ca;
if (!gst_d3d12_command_allocator_pool_acquire (bg_render->ca_pool, &gst_ca)) {
GST_ERROR_OBJECT (self, "Couldn't acquire command allocator");
return FALSE;
}
GstD3D12FenceData *fence_data;
gst_d3d12_fence_data_pool_acquire (priv->fence_data_pool, &fence_data);
gst_d3d12_fence_data_push (fence_data, FENCE_NOTIFY_MINI_OBJECT (gst_ca));
auto ca = gst_d3d12_command_allocator_get_handle (gst_ca);
auto hr = ca->Reset ();
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't reset command allocator");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
if (!bg_render->cl) {
auto device = gst_d3d12_device_get_device_handle (self->device);
hr = device->CreateCommandList (0, D3D12_COMMAND_LIST_TYPE_DIRECT,
ca, bg_render->pso.Get (), IID_PPV_ARGS (&bg_render->cl));
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't create command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
} else {
hr = bg_render->cl->Reset (ca, bg_render->pso.Get ());
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't reset command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
}
auto cl = bg_render->cl;
if (bg_render->vertex_index_upload) {
cl->CopyResource (bg_render->vertex_index_buf.Get (),
bg_render->vertex_index_upload.Get ());
D3D12_RESOURCE_BARRIER barrier =
CD3DX12_RESOURCE_BARRIER::Transition (bg_render->
vertex_index_buf.Get (),
D3D12_RESOURCE_STATE_COPY_DEST,
D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER |
D3D12_RESOURCE_STATE_INDEX_BUFFER);
cl->ResourceBarrier (1, &barrier);
}
if (priv->background == GST_D3D12_COMPOSITOR_BACKGROUND_CHECKER) {
cl->SetGraphicsRootSignature (bg_render->rs.Get ());
cl->IASetPrimitiveTopology (D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
cl->IASetIndexBuffer (&bg_render->ibv);
cl->IASetVertexBuffers (0, 1, &bg_render->vbv);
cl->RSSetViewports (1, &bg_render->viewport);
cl->RSSetScissorRects (1, &bg_render->scissor_rect);
cl->OMSetRenderTargets (1, rtv_handles.data (), FALSE, nullptr);
cl->DrawIndexedInstanced (6, 1, 0, 0, 0);
/* clear U and V components if needed */
for (size_t i = 1; i < rtv_handles.size (); i++) {
cl->ClearRenderTargetView (rtv_handles[i], color->color[i], 1,
&rtv_rects[i]);
}
} else {
switch (priv->background) {
case GST_D3D12_COMPOSITOR_BACKGROUND_BLACK:
color = &priv->clear_color[0];
break;
case GST_D3D12_COMPOSITOR_BACKGROUND_WHITE:
color = &priv->clear_color[1];
break;
case GST_D3D12_COMPOSITOR_BACKGROUND_TRANSPARENT:
color = &priv->clear_color[2];
break;
default:
g_assert_not_reached ();
return FALSE;
}
for (size_t i = 0; i < priv->rtv_handles.size (); i++) {
cl->ClearRenderTargetView (rtv_handles[i], color->color[i], 1,
&rtv_rects[i]);
}
}
hr = cl->Close ();
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't close command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
ID3D12CommandList *cmd_list[] = { cl.Get () };
hr = gst_d3d12_device_execute_command_lists (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, 1, cmd_list, &priv->bg_render->fence_val);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't execute command list");
gst_d3d12_fence_data_unref (fence_data);
return FALSE;
}
auto fence = gst_d3d12_device_get_fence_handle (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT);
gst_d3d12_buffer_set_fence (priv->generated_output_buf, fence,
bg_render->fence_val, FALSE);
if (bg_render->vertex_index_upload) {
gst_d3d12_fence_data_push (fence_data,
FENCE_NOTIFY_COM (bg_render->vertex_index_upload.Detach ()));
}
gst_d3d12_device_set_fence_notify (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, priv->bg_render->fence_val,
FENCE_NOTIFY_MINI_OBJECT (fence_data));
return TRUE;
}
static GstFlowReturn
gst_d3d12_compositor_aggregate_frames (GstVideoAggregator * vagg,
GstBuffer * outbuf)
{
auto self = GST_D3D12_COMPOSITOR (vagg);
auto priv = self->priv;
GList *iter;
GstFlowReturn ret = GST_FLOW_OK;
GST_LOG_OBJECT (self, "aggregate");
if (!priv->generated_output_buf) {
GST_ERROR_OBJECT (self, "No generated output buffer");
return GST_FLOW_ERROR;
}
auto completed = gst_d3d12_device_get_completed_value (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT);
while (!priv->scheduled.empty ()) {
if (priv->scheduled.front () > completed)
break;
priv->scheduled.pop ();
}
/* avoid too large buffering */
if (priv->scheduled.size () > 2) {
auto fence_to_wait = priv->scheduled.front ();
priv->scheduled.pop ();
GST_LOG_OBJECT (self, "Waiting for previous command, %" G_GUINT64_FORMAT,
fence_to_wait);
gst_d3d12_device_fence_wait (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, fence_to_wait,
priv->bg_render->event_handle);
}
if (!gst_d3d12_compositor_draw_background (self)) {
GST_ERROR_OBJECT (self, "Couldn't draw background");
return GST_FLOW_ERROR;
}
guint64 fence_val = priv->bg_render->fence_val;
auto fence = gst_d3d12_device_get_fence_handle (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT);
GST_OBJECT_LOCK (self);
for (iter = GST_ELEMENT (vagg)->sinkpads; iter; iter = g_list_next (iter)) {
auto pad = GST_VIDEO_AGGREGATOR_PAD (iter->data);
auto cpad = GST_D3D12_COMPOSITOR_PAD (pad);
auto pad_priv = cpad->priv;
/* Might be a case where pad was added between prepare_frame() and
* aggregate_frames() */
if (!pad_priv->prepare_rst.valid ()) {
GST_DEBUG_OBJECT (pad, "Ignoring non-prepared pad");
continue;
}
GST_LOG_OBJECT (cpad, "Waiting for command list building thread");
auto prepare_ret = pad_priv->prepare_rst.get ();
if (!prepare_ret) {
GST_ERROR_OBJECT (pad, "Couldn't build command list");
ret = GST_FLOW_ERROR;
break;
}
if (!gst_video_aggregator_pad_get_prepared_frame (pad))
continue;
GST_LOG_OBJECT (cpad, "Command list prepared");
ID3D12CommandList *cmd_list[] = { pad_priv->ctx->cl.Get () };
auto hr = gst_d3d12_device_execute_command_lists (self->device,
D3D12_COMMAND_LIST_TYPE_DIRECT, 1, cmd_list,
&pad_priv->ctx->fence_val);
if (!gst_d3d12_result (hr, self->device)) {
GST_ERROR_OBJECT (self, "Couldn't execute command list");
ret = GST_FLOW_ERROR;
break;
}
fence_val = pad_priv->ctx->fence_val;
gst_d3d12_buffer_set_fence (priv->generated_output_buf,
fence, fence_val, FALSE);
}
GST_OBJECT_UNLOCK (self);
if (ret != GST_FLOW_OK)
return ret;
priv->scheduled.push (fence_val);
if (priv->generated_output_buf != outbuf) {
GstVideoFrame out_frame, in_frame;
if (!gst_video_frame_map (&in_frame, &vagg->info,
priv->generated_output_buf, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Couldn't map generated buffer");
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&out_frame, &vagg->info, outbuf, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (self, "Couldn't map output buffer");
gst_video_frame_unmap (&in_frame);
return GST_FLOW_ERROR;
}
auto copy_ret = gst_video_frame_copy (&out_frame, &in_frame);
gst_video_frame_unmap (&out_frame);
gst_video_frame_unmap (&in_frame);
if (!copy_ret) {
GST_ERROR_OBJECT (self, "Couldn't copy frame");
return GST_FLOW_ERROR;
}
}
return GST_FLOW_OK;
}
struct DeviceCheckData
{
/* without holding ref */
GstD3D12Device *other_device = nullptr;
gboolean have_same_device = FALSE;
};
static gboolean
gst_d3d12_compositor_check_device_update (GstElement * agg,
GstVideoAggregatorPad * vpad, DeviceCheckData * data)
{
auto self = GST_D3D12_COMPOSITOR (agg);
GstBuffer *buf;
GstMemory *mem;
GstD3D12Memory *dmem;
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_d3d12_memory (mem))
return TRUE;
dmem = GST_D3D12_MEMORY_CAST (mem);
/* We can use existing device */
if (gst_d3d12_device_is_equal (dmem->device, self->device)) {
data->have_same_device = TRUE;
return FALSE;
}
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_d3d12_compositor_create_output_buffer (GstVideoAggregator * vagg,
GstBuffer ** outbuffer)
{
auto self = GST_D3D12_COMPOSITOR (vagg);
auto priv = self->priv;
DeviceCheckData data;
/* Check whether there is at least one sinkpad which holds d3d12 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_d3d12_compositor_check_device_update,
&data);
priv->generated_output_buf = nullptr;
if (data.have_same_device || !data.other_device) {
GstBuffer *buf = nullptr;
auto ret =
GST_VIDEO_AGGREGATOR_CLASS (parent_class)->create_output_buffer (vagg,
&buf);
if (ret != GST_FLOW_OK)
return ret;
if (priv->downstream_supports_d3d12)
priv->generated_output_buf = buf;
else
priv->generated_output_buf = priv->fallback_buf;
*outbuffer = buf;
return GST_FLOW_OK;
}
/* Clear all device dependent resources */
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (vagg),
(GstElementForeachPadFunc) gst_d3d12_compositor_clear_pad_context,
nullptr);
gst_clear_buffer (&priv->fallback_buf);
priv->bg_render = nullptr;
priv->scheduled = { };
GST_INFO_OBJECT (self, "Updating device %" GST_PTR_FORMAT " -> %"
GST_PTR_FORMAT, self->device, data.other_device);
{
std::lock_guard < std::recursive_mutex > lk (priv->lock);
gst_object_unref (self->device);
self->device = (GstD3D12Device *) 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;
}