257 lines
6.5 KiB
C++
257 lines
6.5 KiB
C++
// Modern effects for a modern Streamer
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// Copyright (C) 2019 Michael Fabian Dirks
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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#include "gfx-shader-param.hpp"
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#include <algorithm>
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#include <sstream>
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#include "gfx-shader-param-basic.hpp"
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#define ANNO_ORDER "order"
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#define ANNO_VISIBILITY "visible"
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#define ANNO_AUTOMATIC "automatic"
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#define ANNO_NAME "name"
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#define ANNO_DESCRIPTION "description"
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#define ANNO_TYPE "type"
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#define ANNO_SIZE "size"
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typedef gs::effect_parameter::type eptype;
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gfx::shader::parameter_type gfx::shader::get_type_from_effect_type(gs::effect_parameter::type type)
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{
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switch (type) {
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case eptype::Boolean:
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return parameter_type::Boolean;
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case eptype::Integer:
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case eptype::Integer2:
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case eptype::Integer3:
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case eptype::Integer4:
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return parameter_type::Integer;
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case eptype::Float:
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case eptype::Float2:
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case eptype::Float3:
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case eptype::Float4:
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case eptype::Matrix:
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return parameter_type::Float;
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case eptype::String:
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return parameter_type::String;
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case eptype::Texture:
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return parameter_type::Texture;
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default:
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return parameter_type::Unknown;
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}
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}
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size_t gfx::shader::get_length_from_effect_type(gs::effect_parameter::type type)
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{
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switch (type) {
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default:
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case eptype::Unknown:
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case eptype::Invalid:
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case eptype::String:
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return 0;
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case eptype::Boolean:
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case eptype::Float:
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case eptype::Integer:
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case eptype::Texture:
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return 1;
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case eptype::Float2:
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case eptype::Integer2:
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return 2;
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case eptype::Float3:
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case eptype::Integer3:
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return 3;
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case eptype::Float4:
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case eptype::Integer4:
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return 4;
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case eptype::Matrix:
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return 16;
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}
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}
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gfx::shader::parameter_type gfx::shader::get_type_from_string(std::string v)
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{
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if ((v == "bool") || (v == "boolean")) {
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return parameter_type::Boolean;
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}
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if ((v == "float") || (v == "single")) {
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return parameter_type::Float;
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}
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if ((v == "int") || (v == "integer")) {
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return parameter_type::Integer;
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}
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if ((v == "text") || (v == "string")) {
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return parameter_type::String;
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}
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if ((v == "tex") || (v == "texture")) {
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return parameter_type::Texture;
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}
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if ((v == "sampler")) {
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return parameter_type::Sampler;
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}
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/* To decide on in the future:
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* - Double support?
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* - Half Support?
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* - Texture Arrays? (Likely not supported in libobs)
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*/
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throw std::invalid_argument("Invalid parameter type string.");
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}
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gfx::shader::parameter::parameter(gs::effect_parameter param, std::string key_prefix)
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: _param(param), _order(0), _key(_param.get_name()), _visible(true), _automatic(false), _name(_key), _description()
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{
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{
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std::stringstream ss;
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ss << key_prefix << "." << param.get_name();
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_name = (_key);
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}
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// Read Order
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if (auto anno = _param.get_annotation(ANNO_VISIBILITY); anno) {
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_visible = anno.get_default_bool();
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}
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if (auto anno = _param.get_annotation(ANNO_AUTOMATIC); anno) {
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_automatic = anno.get_default_bool();
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}
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// Read Order
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if (auto anno = _param.get_annotation(ANNO_ORDER); anno) {
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_order = anno.get_default_int();
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}
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// Read Name
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if (auto anno = _param.get_annotation(ANNO_NAME); anno) {
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if (std::string v = anno.get_default_string(); v.length() > 0) {
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_name = v;
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} else {
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throw std::out_of_range("'" ANNO_NAME "' annotation has zero length.");
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}
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}
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// Read Description
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if (auto anno = _param.get_annotation(ANNO_DESCRIPTION); anno) {
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if (std::string v = anno.get_default_string(); v.length() > 0) {
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_description = v;
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} else {
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throw std::out_of_range("'" ANNO_DESCRIPTION "' annotation has zero length.");
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}
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}
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// Read Type override.
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_type = get_type_from_effect_type(_param.get_type());
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if (auto anno = _param.get_annotation(ANNO_TYPE); anno) {
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// We have a type override.
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_type = get_type_from_string(anno.get_default_string());
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}
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// Read Size override.
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_size = get_length_from_effect_type(_param.get_type());
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if (auto anno = _param.get_annotation(ANNO_SIZE); anno) {
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size_t ov = static_cast<size_t>(anno.get_default_int());
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if (ov > 0)
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_size = ov;
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}
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_size = std::clamp(_size, 1ull, 32ull);
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}
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void gfx::shader::parameter::defaults(obs_data_t* settings) {}
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void gfx::shader::parameter::properties(obs_properties_t* props, obs_data_t* settings) {}
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void gfx::shader::parameter::update(obs_data_t* settings) {}
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void gfx::shader::parameter::assign() {}
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gs::effect_parameter gfx::shader::parameter::get_parameter()
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{
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return _param;
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}
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gfx::shader::parameter_type gfx::shader::parameter::get_type()
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{
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return _type;
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}
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size_t gfx::shader::parameter::get_size()
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{
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return _size;
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}
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int32_t gfx::shader::parameter::get_order()
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{
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return _order;
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}
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const std::string& gfx::shader::parameter::get_key()
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{
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return _key;
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}
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bool gfx::shader::parameter::is_visible()
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{
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return _visible && !is_automatic();
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}
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bool gfx::shader::parameter::is_automatic()
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{
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return _automatic;
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}
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bool gfx::shader::parameter::has_name()
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{
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return _name.length() > 0;
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}
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const std::string& gfx::shader::parameter::get_name()
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{
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return _name;
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}
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bool gfx::shader::parameter::has_description()
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{
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return _description.length() > 0;
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}
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const std::string& gfx::shader::parameter::get_description()
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{
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return _description;
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}
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std::shared_ptr<gfx::shader::parameter> gfx::shader::parameter::make_parameter(gs::effect_parameter param,
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std::string prefix)
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{
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if (!param) {
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throw std::runtime_error("Bad call to make_parameter. This is a bug in the plugin.");
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}
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parameter_type real_type = get_type_from_effect_type(param.get_type());
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if (auto anno = param.get_annotation(ANNO_TYPE); anno) {
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// We have a type override.
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real_type = get_type_from_string(param.get_default_string());
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}
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switch (real_type) {
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case parameter_type::Boolean:
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return std::make_shared<gfx::shader::bool_parameter>(param, prefix);
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case parameter_type::Integer:
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return std::make_shared<gfx::shader::int_parameter>(param, prefix);
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case parameter_type::Float:
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return std::make_shared<gfx::shader::float_parameter>(param, prefix);
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default:
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return nullptr;
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}
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}
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