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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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13c90b606a
Adding a new library for HLSL compile and compiled bytecode caching. This library will be used by d3d11 and d3d12 library/plugin, in order to reuse single HLSL code and compiled HLSL bytecode. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6434>
140 lines
4 KiB
C++
140 lines
4 KiB
C++
/* GStreamer
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* Copyright (C) 2024 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstd3dcompile.h"
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#include <gmodule.h>
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#include <mutex>
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/**
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* SECTION:gstd3dcompile
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* @title: GstD3DCompile
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* @short_description: HLSL compiler and utility
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*
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* A set of HLSL compile helper methods
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*
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* Since: 1.26
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*/
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#ifndef GST_DISABLE_GST_DEBUG
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#define GST_CAT_DEFAULT ensure_debug_category()
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static GstDebugCategory *
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ensure_debug_category (void)
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{
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static GstDebugCategory *cat = nullptr;
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static std::once_flag cat_once;
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std::call_once (cat_once, [&]() {
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cat = _gst_debug_category_new ("d3dcompile", 0, "d3dcompile");
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});
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return cat;
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}
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#endif /* GST_DISABLE_GST_DEBUG */
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static GModule *d3d_compiler_module = nullptr;
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static pD3DCompile GstD3DCompileFunc = nullptr;
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/**
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* gst_d3d_compile_init:
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*
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* Loads HLSL compiler library
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*
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* Returns: %TRUE if HLSL compiler library is available
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*
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* Since: 1.26
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*/
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gboolean
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gst_d3d_compile_init (void)
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{
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static std::once_flag init_once;
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std::call_once (init_once, [&]() {
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static const gchar *d3d_compiler_names[] = {
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"d3dcompiler_47.dll",
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"d3dcompiler_46.dll",
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"d3dcompiler_45.dll",
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"d3dcompiler_44.dll",
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"d3dcompiler_43.dll",
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};
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for (guint i = 0; i < G_N_ELEMENTS (d3d_compiler_names); i++) {
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d3d_compiler_module =
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g_module_open (d3d_compiler_names[i], G_MODULE_BIND_LAZY);
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if (d3d_compiler_module) {
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GST_INFO ("D3D compiler %s is available", d3d_compiler_names[i]);
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if (!g_module_symbol (d3d_compiler_module, "D3DCompile",
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(gpointer *) & GstD3DCompileFunc)) {
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GST_ERROR ("Cannot load D3DCompile symbol from %s",
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d3d_compiler_names[i]);
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g_module_close (d3d_compiler_module);
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d3d_compiler_module = nullptr;
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GstD3DCompileFunc = nullptr;
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} else {
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break;
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}
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}
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}
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if (!GstD3DCompileFunc)
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GST_WARNING ("D3D compiler library is unavailable");
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});
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if (!GstD3DCompileFunc)
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return FALSE;
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return TRUE;
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}
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/**
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* gst_d3d_compile:
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* @src_data: source data to compile
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* @src_data_size: length of src_data
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* @source_name: (nullable): used for strings that specify error messages
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* @defines: (nullable): null-terminated array of D3D_SHADER_MACRO struct that defines shader macros
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* @include: (nullable): a ID3DInclude
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* @entry_point: (nullable): the name of entry point function
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* @target: a string specifies the shader target
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* @flags1: flags defined by D3DCOMPILE constants
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* @flags2: flags defined by D3DCOMPILE_EFFECT constants
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* @code: (out) (optional): a compiled code
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* @error_msgs: (out) (optional) (nullable): compiler error messages
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*
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* Compiles HLSL code or an effect file into bytecode for a given target
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*
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* Returns: HRESULT return code
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*
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* Since: 1.26
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*/
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HRESULT
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gst_d3d_compile (LPCVOID src_data, SIZE_T src_data_size, LPCSTR source_name,
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CONST D3D_SHADER_MACRO * defines, ID3DInclude * include, LPCSTR entry_point,
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LPCSTR target, UINT flags1, UINT flags2, ID3DBlob ** code,
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ID3DBlob ** error_msgs)
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{
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if (!gst_d3d_compile_init ())
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return E_FAIL;
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return GstD3DCompileFunc (src_data, src_data_size, source_name, defines,
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include, entry_point, target, flags1, flags2, code, error_msgs);
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}
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