gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12pluginutils.cpp

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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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstd3d12pluginutils.h"
#include <directx/d3dx12.h>
#include <vector>
#define _XM_NO_INTRINSICS_
#include <DirectXMath.h>
/* *INDENT-OFF* */
using namespace DirectX;
/* *INDENT-ON* */
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT ensure_debug_category()
static GstDebugCategory *
ensure_debug_category (void)
{
static GstDebugCategory *cat = nullptr;
GST_D3D12_CALL_ONCE_BEGIN {
cat = _gst_debug_category_new ("d3d12pluginutils", 0, "d3d12pluginutils");
} GST_D3D12_CALL_ONCE_END;
return cat;
}
#endif /* GST_DISABLE_GST_DEBUG */
GType
gst_d3d12_sampling_method_get_type (void)
{
static GType type = 0;
static const GEnumValue methods[] = {
{GST_D3D12_SAMPLING_METHOD_NEAREST,
"Nearest Neighbour", "nearest-neighbour"},
{GST_D3D12_SAMPLING_METHOD_BILINEAR,
"Bilinear", "bilinear"},
{GST_D3D12_SAMPLING_METHOD_LINEAR_MINIFICATION,
"Linear minification, point magnification", "linear-minification"},
{GST_D3D12_SAMPLING_METHOD_ANISOTROPIC, "Anisotropic", "anisotropic"},
{0, nullptr, nullptr},
};
GST_D3D12_CALL_ONCE_BEGIN {
type = g_enum_register_static ("GstD3D12SamplingMethod", methods);
} GST_D3D12_CALL_ONCE_END;
return type;
}
struct SamplingMethodMap
{
GstD3D12SamplingMethod method;
D3D12_FILTER filter;
};
static const SamplingMethodMap sampling_method_map[] = {
{GST_D3D12_SAMPLING_METHOD_NEAREST, D3D12_FILTER_MIN_MAG_MIP_POINT},
{GST_D3D12_SAMPLING_METHOD_BILINEAR, D3D12_FILTER_MIN_MAG_LINEAR_MIP_POINT},
{GST_D3D12_SAMPLING_METHOD_LINEAR_MINIFICATION,
D3D12_FILTER_MIN_LINEAR_MAG_MIP_POINT},
{GST_D3D12_SAMPLING_METHOD_ANISOTROPIC, D3D12_FILTER_ANISOTROPIC},
};
D3D12_FILTER
gst_d3d12_sampling_method_to_native (GstD3D12SamplingMethod method)
{
for (guint i = 0; i < G_N_ELEMENTS (sampling_method_map); i++) {
if (sampling_method_map[i].method == method)
return sampling_method_map[i].filter;
}
return D3D12_FILTER_MIN_MAG_MIP_POINT;
}
GType
gst_d3d12_msaa_mode_get_type (void)
{
static GType type = 0;
static const GEnumValue msaa_mode[] = {
{GST_D3D12_MSAA_DISABLED, "Disabled", "disabled"},
{GST_D3D12_MSAA_2X, "2x MSAA", "2x"},
{GST_D3D12_MSAA_4X, "4x MSAA", "4x"},
{GST_D3D12_MSAA_8X, "8x MSAA", "8x"},
{0, nullptr, nullptr},
};
GST_D3D12_CALL_ONCE_BEGIN {
type = g_enum_register_static ("GstD3D12MSAAMode", msaa_mode);
} GST_D3D12_CALL_ONCE_END;
return type;
}
void
gst_d3d12_buffer_after_write (GstBuffer * buffer, guint64 fence_value)
{
for (guint i = 0; i < gst_buffer_n_memory (buffer); i++) {
auto mem = gst_buffer_peek_memory (buffer, i);
g_return_if_fail (gst_is_d3d12_memory (mem));
auto dmem = GST_D3D12_MEMORY_CAST (mem);
dmem->fence_value = fence_value;
GST_MINI_OBJECT_FLAG_SET (dmem, GST_D3D12_MEMORY_TRANSFER_NEED_DOWNLOAD);
GST_MINI_OBJECT_FLAG_UNSET (dmem, GST_D3D12_MEMORY_TRANSFER_NEED_UPLOAD);
}
}
gboolean
gst_d3d12_need_transform (gfloat rotation_x, gfloat rotation_y,
gfloat rotation_z, gfloat scale_x, gfloat scale_y)
{
const gfloat min_diff = 0.00001f;
if (!XMScalarNearEqual (rotation_x, 0.0f, min_diff) ||
!XMScalarNearEqual (rotation_y, 0.0f, min_diff) ||
!XMScalarNearEqual (rotation_z, 0.0f, min_diff) ||
!XMScalarNearEqual (scale_x, 1.0f, min_diff) ||
!XMScalarNearEqual (scale_y, 1.0f, min_diff)) {
return TRUE;
}
return FALSE;
}
static gboolean
gst_d3d12_buffer_copy_into_fallback (GstBuffer * dst, GstBuffer * src,
const GstVideoInfo * info)
{
GstVideoFrame in_frame, out_frame;
gboolean ret;
if (!gst_video_frame_map (&in_frame, (GstVideoInfo *) info, src,
(GstMapFlags) (GST_MAP_READ | GST_VIDEO_FRAME_MAP_FLAG_NO_REF))) {
GST_ERROR ("Couldn't map src frame");
return FALSE;
}
if (!gst_video_frame_map (&out_frame, (GstVideoInfo *) info, dst,
(GstMapFlags) (GST_MAP_WRITE | GST_VIDEO_FRAME_MAP_FLAG_NO_REF))) {
GST_ERROR ("Couldn't map dst frame");
gst_video_frame_unmap (&in_frame);
return FALSE;
}
ret = gst_video_frame_copy (&out_frame, &in_frame);
gst_video_frame_unmap (&in_frame);
gst_video_frame_unmap (&out_frame);
return ret;
}
static gboolean
gst_is_d3d12_buffer (GstBuffer * buffer)
{
auto size = gst_buffer_n_memory (buffer);
if (size == 0)
return FALSE;
for (guint i = 0; i < size; i++) {
auto mem = gst_buffer_peek_memory (buffer, i);
if (!gst_is_d3d12_memory (mem))
return FALSE;
}
return TRUE;
}
gboolean
gst_d3d12_buffer_copy_into (GstBuffer * dst, GstBuffer * src,
const GstVideoInfo * info)
{
g_return_val_if_fail (GST_IS_BUFFER (dst), FALSE);
g_return_val_if_fail (GST_IS_BUFFER (src), FALSE);
g_return_val_if_fail (info, FALSE);
auto num_mem = gst_buffer_n_memory (dst);
if (gst_buffer_n_memory (src) != num_mem) {
GST_LOG ("different memory layout, perform fallback copy");
return gst_d3d12_buffer_copy_into_fallback (dst, src, info);
}
if (!gst_is_d3d12_buffer (dst) || !gst_is_d3d12_buffer (src)) {
GST_LOG ("non-d3d12 memory, perform fallback copy");
return gst_d3d12_buffer_copy_into_fallback (dst, src, info);
}
std::vector < GstD3D12CopyTextureRegionArgs > copy_args;
D3D12_BOX src_box[4];
guint resource_idx = 0;
GstD3D12Device *device = nullptr;
for (guint i = 0; i < num_mem; i++) {
auto dst_mem = gst_buffer_peek_memory (dst, i);
auto src_mem = gst_buffer_peek_memory (src, i);
auto dst_dmem = GST_D3D12_MEMORY_CAST (dst_mem);
auto src_dmem = GST_D3D12_MEMORY_CAST (src_mem);
device = dst_dmem->device;
if (device != src_dmem->device) {
GST_LOG ("different device, perform fallback copy");
return gst_d3d12_buffer_copy_into_fallback (dst, src, info);
}
/* Map memory to execute pending upload and wait for external fence */
GstMapInfo map_info;
if (!gst_memory_map (src_mem, &map_info,
(GstMapFlags) (GST_MAP_READ | GST_MAP_D3D12))) {
GST_ERROR ("Cannot map src d3d12 memory");
return FALSE;
}
gst_memory_unmap (src_mem, &map_info);
if (!gst_memory_map (dst_mem, &map_info,
(GstMapFlags) (GST_MAP_WRITE | GST_MAP_D3D12))) {
GST_ERROR ("Cannot map dst d3d12 memory");
return FALSE;
}
gst_memory_unmap (dst_mem, &map_info);
auto num_planes = gst_d3d12_memory_get_plane_count (src_dmem);
for (guint j = 0; j < num_planes; j++) {
GstD3D12CopyTextureRegionArgs args = { };
D3D12_RECT src_rect;
D3D12_RECT dst_rect;
gst_d3d12_memory_get_plane_rectangle (src_dmem, j, &src_rect);
gst_d3d12_memory_get_plane_rectangle (dst_dmem, j, &dst_rect);
auto src_handle = gst_d3d12_memory_get_resource_handle (src_dmem);
auto dst_handle = gst_d3d12_memory_get_resource_handle (dst_dmem);
guint src_subresource;
guint dst_subresource;
gst_d3d12_memory_get_subresource_index (src_dmem, j, &src_subresource);
gst_d3d12_memory_get_subresource_index (dst_dmem, j, &dst_subresource);
args.src = CD3DX12_TEXTURE_COPY_LOCATION (src_handle, src_subresource);
args.dst = CD3DX12_TEXTURE_COPY_LOCATION (dst_handle, dst_subresource);
src_box[resource_idx].front = 0;
src_box[resource_idx].back = 1;
src_box[resource_idx].left = 0;
src_box[resource_idx].top = 0;
src_box[resource_idx].right = MIN (src_rect.right, dst_rect.right);
src_box[resource_idx].bottom = MIN (src_rect.bottom, dst_rect.bottom);
args.src_box = &src_box[resource_idx];
resource_idx++;
copy_args.push_back (args);
}
}
g_assert (device);
guint64 fence_val;
if (!gst_d3d12_device_copy_texture_region (device, copy_args.size (),
copy_args.data (), D3D12_COMMAND_LIST_TYPE_DIRECT, &fence_val)) {
GST_ERROR ("Couldn't copy texture");
return FALSE;
}
gst_d3d12_buffer_after_write (dst, fence_val);
return TRUE;
}