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obs-StreamFX/source/obs/gs/gs-effect.cpp
Michael Fabian 'Xaymar' Dirks 5a4d38d249 project: Fix a massive list of dangerous warnings 
This is a massive improvement to stability and safety when using the plugin, as all exceptions should now no longer be leaked into C controlled code, which can't actually handle exceptions at all.

Warnings fixed:

* Potentially throwing exception during library load.
* Possibly throwing function passed to C.
* Statement does nothing.
* Variable is initialized but not referenced.
* Variable overloads variable in parent scope.
2019-09-05 18:42:28 +02:00

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2017 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "gs-effect.hpp"
#include <fstream>
#include <iostream>
#include <stdexcept>
#include <vector>
#include "obs/gs/gs-helper.hpp"
// OBS
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4201)
#endif
#include <obs.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
//#define OBS_LOAD_EFFECT_FILE
gs::effect::effect(std::string file)
{
#ifdef OBS_LOAD_EFFECT_FILE
char* errorMessage = nullptr;
auto gctx = gs::context();
m_effect = gs_effect_create_from_file(file.c_str(), &errorMessage);
if (!m_effect || errorMessage) {
std::string error = "Generic Error";
if (errorMessage) {
error = std::string(errorMessage);
bfree((void*)errorMessage);
}
throw std::runtime_error(error);
}
#else
std::ifstream filestream = std::ifstream(file, std::ios::binary);
if (!filestream.is_open()) {
throw std::runtime_error("Failed to open file.");
}
filestream.ignore(std::numeric_limits<std::streamsize>::max());
std::streamsize length = filestream.gcount();
filestream.clear(); // Since ignore will have set eof.
filestream.seekg(0, std::ios_base::beg);
if (length > 256 * 1024 * 1024) {
throw std::runtime_error("Shader too large (>256mb)");
}
std::vector<char> shader_buf(size_t(length + 1), 0);
filestream.read(shader_buf.data(), length);
char* errorMessage = nullptr;
auto gctx = gs::context();
_effect = gs_effect_create(shader_buf.data(), file.c_str(), &errorMessage);
if (!_effect || errorMessage) {
std::string error = "Generic Error";
if (errorMessage) {
error = std::string(errorMessage);
bfree((void*)errorMessage);
}
throw std::runtime_error(error);
}
#endif
}
gs::effect::effect(std::string code, std::string name)
{
char* errorMessage = nullptr;
auto gctx = gs::context();
_effect = gs_effect_create(code.c_str(), name.c_str(), &errorMessage);
if (!_effect || errorMessage) {
std::string error = "Generic Error";
if (errorMessage) {
error = std::string(errorMessage);
bfree((void*)errorMessage);
}
throw std::runtime_error(error);
}
}
gs::effect::~effect()
{
auto gctx = gs::context();
gs_effect_destroy(_effect);
}
gs_effect_t* gs::effect::get_object()
{
return _effect;
}
size_t gs::effect::count_parameters()
{
return (size_t)gs_effect_get_num_params(_effect);
}
std::list<std::shared_ptr<gs::effect_parameter>> gs::effect::get_parameters()
{
size_t num = gs_effect_get_num_params(_effect);
std::list<std::shared_ptr<gs::effect_parameter>> ps;
for (size_t idx = 0; idx < num; idx++) {
ps.emplace_back(get_parameter(idx));
}
return ps;
}
std::shared_ptr<gs::effect_parameter> gs::effect::get_parameter(size_t idx)
{
gs_eparam_t* param = gs_effect_get_param_by_idx(_effect, idx);
if (!param)
return nullptr;
return std::make_shared<effect_parameter>(this->shared_from_this(), param);
}
std::shared_ptr<gs::effect_parameter> gs::effect::get_parameter(std::string name)
{
gs_eparam_t* param = gs_effect_get_param_by_name(_effect, name.c_str());
if (!param)
return nullptr;
return std::make_shared<effect_parameter>(this->shared_from_this(), param);
}
bool gs::effect::has_parameter(std::string name)
{
auto eprm = get_parameter(name);
if (eprm)
return true;
return false;
}
bool gs::effect::has_parameter(std::string name, effect_parameter::type type)
{
auto eprm = get_parameter(name);
if (eprm)
return eprm->get_type() == type;
return false;
}
std::shared_ptr<gs::effect> gs::effect::create(std::string file)
{
return std::shared_ptr<gs::effect>(new gs::effect(file));
}
std::shared_ptr<gs::effect> gs::effect::create(std::string code, std::string name)
{
return std::shared_ptr<gs::effect>(new gs::effect(code, name));
}
gs::effect_parameter::effect_parameter(std::shared_ptr<gs::effect> effect, gs_eparam_t* param)
: _effect(effect), _param(param)
{
if (!effect)
throw std::invalid_argument("effect");
if (!param)
throw std::invalid_argument("param");
gs_effect_get_param_info(_param, &_param_info);
}
std::string gs::effect_parameter::get_name()
{
return _param_info.name;
}
gs::effect_parameter::type gs::effect_parameter::get_type()
{
switch (_param_info.type) {
case GS_SHADER_PARAM_BOOL:
return type::Boolean;
case GS_SHADER_PARAM_FLOAT:
return type::Float;
case GS_SHADER_PARAM_VEC2:
return type::Float2;
case GS_SHADER_PARAM_VEC3:
return type::Float3;
case GS_SHADER_PARAM_VEC4:
return type::Float4;
case GS_SHADER_PARAM_INT:
return type::Integer;
case GS_SHADER_PARAM_INT2:
return type::Integer2;
case GS_SHADER_PARAM_INT3:
return type::Integer3;
case GS_SHADER_PARAM_INT4:
return type::Integer4;
case GS_SHADER_PARAM_MATRIX4X4:
return type::Matrix;
case GS_SHADER_PARAM_TEXTURE:
return type::Texture;
case GS_SHADER_PARAM_STRING:
return type::String;
default:
case GS_SHADER_PARAM_UNKNOWN:
return type::Unknown;
}
}
void gs::effect_parameter::set_bool(bool v)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
gs_effect_set_bool(_param, v);
}
void gs::effect_parameter::get_bool(bool& v)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
void* ptr = gs_effect_get_val(_param);
if (ptr) {
v = *reinterpret_cast<bool*>(ptr);
bfree(ptr);
} else {
v = false;
}
}
void gs::effect_parameter::get_default_bool(bool& v)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
void* ptr = gs_effect_get_default_val(_param);
if (ptr) {
v = *reinterpret_cast<bool*>(ptr);
bfree(ptr);
} else {
v = false;
}
}
void gs::effect_parameter::set_bool_array(bool v[], size_t sz)
{
if (get_type() != type::Boolean)
throw std::bad_cast();
gs_effect_set_val(_param, v, sz);
}
void gs::effect_parameter::set_float(float_t x)
{
if (get_type() != type::Float)
throw std::bad_cast();
gs_effect_set_float(_param, x);
}
void gs::effect_parameter::get_float(float_t& x)
{
if (get_type() != type::Float)
throw std::bad_cast();
void* ptr = gs_effect_get_val(_param);
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
bfree(ptr);
} else {
x = 0;
}
}
void gs::effect_parameter::get_default_float(float_t& x)
{
if (get_type() != type::Float)
throw std::bad_cast();
void* ptr = gs_effect_get_default_val(_param);
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
bfree(ptr);
} else {
x = 0;
}
}
void gs::effect_parameter::set_float2(vec2 const& v)
{
if (get_type() != type::Float2)
throw std::bad_cast();
gs_effect_set_vec2(_param, &v);
}
void gs::effect_parameter::get_float2(vec2& v)
{
get_float2(v.x, v.y);
}
void gs::effect_parameter::get_default_float2(vec2& v)
{
get_default_float2(v.x, v.y);
}
void gs::effect_parameter::set_float2(float_t x, float_t y)
{
vec2 data;
data.x = x;
data.y = y;
set_float2(data);
}
void gs::effect_parameter::get_float2(float_t& x, float_t& y)
{
if (get_type() != type::Float2)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
bfree(ptr);
} else {
x = y = 0;
}
}
void gs::effect_parameter::get_default_float2(float_t& x, float_t& y)
{
if (get_type() != type::Float2)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
bfree(ptr);
} else {
x = y = 0;
}
}
void gs::effect_parameter::set_float3(vec3 const& v)
{
if (get_type() != type::Float3)
throw std::bad_cast();
gs_effect_set_vec3(_param, &v);
}
void gs::effect_parameter::get_float3(vec3& v)
{
get_float3(v.x, v.y, v.z);
}
void gs::effect_parameter::get_default_float3(vec3& v)
{
get_default_float3(v.x, v.y, v.z);
}
void gs::effect_parameter::set_float3(float_t x, float_t y, float_t z)
{
if (get_type() != type::Float3)
throw std::bad_cast();
vec3 v = {{x, y, z, 0}};
gs_effect_set_vec3(_param, &v);
}
void gs::effect_parameter::get_float3(float_t& x, float_t& y, float_t& z)
{
if (get_type() != type::Float3)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
bfree(ptr);
} else {
x = y = z = 0;
}
}
void gs::effect_parameter::get_default_float3(float_t& x, float_t& y, float_t& z)
{
if (get_type() != type::Float3)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
bfree(ptr);
} else {
x = y = z = 0;
}
}
void gs::effect_parameter::set_float4(vec4 const& v)
{
if (get_type() != type::Float4)
throw std::bad_cast();
gs_effect_set_vec4(_param, &v);
}
void gs::effect_parameter::get_float4(vec4& v)
{
get_float4(v.x, v.y, v.z, v.w);
}
void gs::effect_parameter::get_default_float4(vec4& v)
{
get_default_float4(v.x, v.y, v.z, v.w);
}
void gs::effect_parameter::set_float4(float_t x, float_t y, float_t z, float_t w)
{
if (get_type() != type::Float4)
throw std::bad_cast();
vec4 v = {{x, y, z, w}};
gs_effect_set_vec4(_param, &v);
}
void gs::effect_parameter::get_float4(float_t& x, float_t& y, float_t& z, float_t& w)
{
if (get_type() != type::Float4)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 3);
bfree(ptr);
} else {
x = y = z = w = 0;
}
}
void gs::effect_parameter::get_default_float4(float_t& x, float_t& y, float_t& z, float_t& w)
{
if (get_type() != type::Float4)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<float_t*>(ptr);
y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t));
z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 3);
bfree(ptr);
} else {
x = y = z = w = 0;
}
}
void gs::effect_parameter::set_float_array(float_t v[], size_t sz)
{
if ((get_type() != type::Float) && (get_type() != type::Float2) && (get_type() != type::Float3)
&& (get_type() != type::Float4))
throw std::bad_cast();
gs_effect_set_val(_param, v, sizeof(float_t) * sz);
}
void gs::effect_parameter::set_int(int32_t x)
{
if ((get_type() != type::Integer) && (get_type() != type::Unknown))
throw std::bad_cast();
gs_effect_set_int(_param, x);
}
void gs::effect_parameter::get_int(int32_t& x)
{
if ((get_type() != type::Integer) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
bfree(ptr);
} else {
x = 0;
}
}
void gs::effect_parameter::get_default_int(int32_t& x)
{
if ((get_type() != type::Integer) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
bfree(ptr);
} else {
x = 0;
}
}
void gs::effect_parameter::set_int2(int32_t x, int32_t y)
{
if ((get_type() != type::Integer2) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[2] = {x, y};
gs_effect_set_val(_param, v, sizeof(int) * 2);
}
void gs::effect_parameter::get_int2(int32_t& x, int32_t& y)
{
if ((get_type() != type::Integer2) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
bfree(ptr);
} else {
x = y = 0;
}
}
void gs::effect_parameter::get_default_int2(int32_t& x, int32_t& y)
{
if ((get_type() != type::Integer2) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
bfree(ptr);
} else {
x = y = 0;
}
}
void gs::effect_parameter::set_int3(int32_t x, int32_t y, int32_t z)
{
if ((get_type() != type::Integer3) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[3] = {x, y, z};
gs_effect_set_val(_param, v, sizeof(int) * 3);
}
void gs::effect_parameter::get_int3(int32_t& x, int32_t& y, int32_t& z)
{
if ((get_type() != type::Integer3) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
z = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 2);
bfree(ptr);
} else {
x = y = z = 0;
}
}
void gs::effect_parameter::get_default_int3(int32_t& x, int32_t& y, int32_t& z)
{
if ((get_type() != type::Integer3) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
z = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 2);
bfree(ptr);
} else {
x = y = z = 0;
}
}
void gs::effect_parameter::set_int4(int32_t x, int32_t y, int32_t z, int32_t w)
{
if ((get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
int32_t v[4] = {x, y, z, w};
gs_effect_set_val(_param, v, sizeof(int) * 4);
}
void gs::effect_parameter::get_int4(int32_t& x, int32_t& y, int32_t& z, int32_t& w)
{
if ((get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
z = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 2);
w = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 3);
bfree(ptr);
} else {
x = y = z = w = 0;
}
}
void gs::effect_parameter::get_default_int4(int32_t& x, int32_t& y, int32_t& z, int32_t& w)
{
if ((get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
x = *reinterpret_cast<int32_t*>(ptr);
y = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t));
z = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 2);
w = *reinterpret_cast<int32_t*>(ptr + sizeof(int32_t) * 3);
bfree(ptr);
} else {
x = y = z = w = 0;
}
}
void gs::effect_parameter::set_int_array(int32_t v[], size_t sz)
{
if ((get_type() != type::Integer) && (get_type() != type::Integer2) && (get_type() != type::Integer3)
&& (get_type() != type::Integer4) && (get_type() != type::Unknown))
throw std::bad_cast();
gs_effect_set_val(_param, v, sizeof(int) * sz);
}
void gs::effect_parameter::set_matrix(matrix4 const& v)
{
if (get_type() != type::Matrix)
throw std::bad_cast();
gs_effect_set_matrix4(_param, &v);
}
void gs::effect_parameter::get_matrix(matrix4& v)
{
if (get_type() != type::Matrix)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
v.x.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 0);
v.x.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 1);
v.x.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
v.x.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 3);
v.y.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 4);
v.y.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 5);
v.y.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 6);
v.y.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 7);
v.z.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 8);
v.z.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 9);
v.z.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 10);
v.z.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 11);
v.t.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 12);
v.t.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 13);
v.t.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 14);
v.t.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 15);
bfree(ptr);
} else {
v.x = vec4{};
v.y = vec4{};
v.z = vec4{};
v.t = vec4{};
}
}
void gs::effect_parameter::get_default_matrix(matrix4& v)
{
if (get_type() != type::Matrix)
throw std::bad_cast();
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
v.x.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 0);
v.x.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 1);
v.x.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 2);
v.x.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 3);
v.y.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 4);
v.y.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 5);
v.y.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 6);
v.y.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 7);
v.z.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 8);
v.z.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 9);
v.z.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 10);
v.z.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 11);
v.t.x = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 12);
v.t.y = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 13);
v.t.z = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 14);
v.t.w = *reinterpret_cast<float_t*>(ptr + sizeof(float_t) * 15);
bfree(ptr);
} else {
v.x = vec4{};
v.y = vec4{};
v.z = vec4{};
v.t = vec4{};
}
}
void gs::effect_parameter::set_texture(std::shared_ptr<gs::texture> v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_texture(_param, v->get_object());
}
void gs::effect_parameter::set_texture(gs_texture_t* v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_texture(_param, v);
}
void gs::effect_parameter::set_sampler(std::shared_ptr<gs::sampler> v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_next_sampler(_param, v->get_object());
}
void gs::effect_parameter::set_sampler(gs_sampler_state* v)
{
if (get_type() != type::Texture)
throw std::bad_cast();
gs_effect_set_next_sampler(_param, v);
}
void gs::effect_parameter::set_string(std::string const& v)
{
if (get_type() != type::String)
throw std::bad_cast();
gs_effect_set_val(_param, v.c_str(), v.length());
}
void gs::effect_parameter::get_string(std::string& v)
{
if (get_type() != type::String)
throw std::bad_cast();
size_t ptr_len = gs_effect_get_val_size(_param);
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_val(_param));
if (ptr) {
v = std::string(ptr, ptr + ptr_len - 1);
bfree(ptr);
} else {
v = "";
}
}
void gs::effect_parameter::get_default_string(std::string& v)
{
if (get_type() != type::String)
throw std::bad_cast();
size_t ptr_len = gs_effect_get_default_val_size(_param);
uint8_t* ptr = static_cast<uint8_t*>(gs_effect_get_default_val(_param));
if (ptr) {
v = std::string(ptr, ptr + ptr_len - 1);
bfree(ptr);
} else {
v = "";
}
}
size_t gs::effect_parameter::count_annotations()
{
return gs_param_get_num_annotations(_param);
}
std::shared_ptr<gs::effect_parameter> gs::effect_parameter::get_annotation(size_t idx)
{
gs_eparam_t* param = gs_param_get_annotation_by_idx(_param, idx);
if (!param)
return nullptr;
return std::make_shared<effect_parameter>(_effect, param);
}
std::shared_ptr<gs::effect_parameter> gs::effect_parameter::get_annotation(std::string name)
{
gs_eparam_t* param = gs_param_get_annotation_by_name(_param, name.c_str());
if (!param)
return nullptr;
return std::make_shared<effect_parameter>(_effect, param);
}
bool gs::effect_parameter::has_annotation(std::string name)
{
auto eprm = get_annotation(name);
if (eprm)
return true;
return false;
}
bool gs::effect_parameter::has_annotation(std::string name, effect_parameter::type type)
{
auto eprm = get_annotation(name);
if (eprm)
return eprm->get_type() == type;
return false;
}
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