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gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12compositor.cpp
Seungha Yang 72895ed0fa d3d12: Always allocate output texture using shared heap 
... if downstream preference is unknown (e.g., no proposed
buffer pool by downstream), so that produced textures can be
shareable with other APIs such as d3d11 or vulkan, or other processes

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7193>
2024-07-18 14:17:43 +00:00

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/* 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)
{
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);
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;
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)
{
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);
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;
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;
}
}
}
priv->clear_color[2] = priv->clear_color[0];
priv->clear_color[2].color[0][3] = 0.0;
}
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_SHARED);
} 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);
}
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;
}
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