obs-StreamFX/source/util/utility.cpp
lainon 6e1566386e project: Apply more C++ paradigms to the code
- Use auto in places where code clarity is improved or identical.
- Replace trivial constructors and destructors with default.
- Use true random for random generation.
- Use std::string_view where it is valid to do so.
- Apply const where it is valid to do so.
- Use references where it is valid to do so.
- Manually optimize memory usage with std::move and std::copy.
- Opt for memory efficient containers where the size is known ahead of time.

Signed-off-by: lainon <GermanAizek@yandex.ru>
2023-04-05 18:58:32 +02:00

182 lines
4.6 KiB
C++

/*
* Modern effects for a modern Streamer
* Copyright (C) 2018 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 "utility.hpp"
#include <sstream>
#include <stdexcept>
#include <unordered_map>
#include "plugin.hpp"
// OBS
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4201)
#pragma warning(disable : 5039)
#endif
#include <obs.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
obs_property_t* streamfx::util::obs_properties_add_tristate(obs_properties_t* props, const char* name, const char* desc)
{
obs_property_t* p = obs_properties_add_list(props, name, desc, OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
obs_property_list_add_int(p, D_TRANSLATE(S_STATE_DEFAULT), -1);
obs_property_list_add_int(p, D_TRANSLATE(S_STATE_DISABLED), 0);
obs_property_list_add_int(p, D_TRANSLATE(S_STATE_ENABLED), 1);
return p;
}
void* streamfx::util::vec2a::operator new(std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void* streamfx::util::vec2a::operator new[](std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void streamfx::util::vec2a::operator delete(void* p)
{
streamfx::util::free_aligned(p);
}
void streamfx::util::vec2a::operator delete[](void* p)
{
streamfx::util::free_aligned(p);
}
void* streamfx::util::vec3a::operator new(std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void* streamfx::util::vec3a::operator new[](std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void streamfx::util::vec3a::operator delete(void* p)
{
streamfx::util::free_aligned(p);
}
void streamfx::util::vec3a::operator delete[](void* p)
{
streamfx::util::free_aligned(p);
}
void* streamfx::util::vec4a::operator new(std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void* streamfx::util::vec4a::operator new[](std::size_t count)
{
return streamfx::util::malloc_aligned(16, count);
}
void streamfx::util::vec4a::operator delete(void* p)
{
streamfx::util::free_aligned(p);
}
void streamfx::util::vec4a::operator delete[](void* p)
{
streamfx::util::free_aligned(p);
}
std::pair<int64_t, int64_t> streamfx::util::size_from_string(std::string_view text, bool allowSquare)
{
int64_t width, height;
const auto* begin = text.data();
const auto* end = text.data() + text.size() + 1;
char* here = const_cast<char*>(end);
long long res = strtoll(begin, &here, 0);
if (errno == ERANGE) {
return {0, 0};
}
width = res;
while (here != end) {
if (isdigit(*here) || (*here == '-') || (*here == '+')) {
break;
}
here++;
}
if (here == end) {
// Are we allowed to return a square?
if (allowSquare) {
// Yes: Return width,width.
return {width, width};
} else {
// No: Return width,0.
return {width, 0};
}
}
res = strtoll(here, nullptr, 0);
if (errno == ERANGE) {
return {width, 0};
}
height = res;
return {width, height};
}
void* streamfx::util::malloc_aligned(std::size_t align, std::size_t size)
{
#ifdef USE_MSC_ALLOC
return _aligned_malloc(size, align);
#elif defined(USE_STD_ALLOC)
return aligned_alloc(size, align);
#else
// Ensure that we have space for the pointer and the data.
std::size_t asize = aligned_offset(align, size + (sizeof(void*) * 2));
// Allocate memory and store integer representation of pointer.
void* ptr = malloc(asize);
// Calculate actual aligned position
intptr_t ptr_off = static_cast<intptr_t>(aligned_offset(align, reinterpret_cast<size_t>(ptr) + sizeof(void*)));
// Store actual pointer at ptr_off - sizeof(void*).
*reinterpret_cast<intptr_t*>(ptr_off - sizeof(void*)) = reinterpret_cast<intptr_t>(ptr);
// Return aligned pointer
return reinterpret_cast<void*>(ptr_off);
#endif
}
void streamfx::util::free_aligned(void* mem)
{
#ifdef USE_MSC_ALLOC
_aligned_free(mem);
#elif defined(USE_STD_ALLOC_FREE)
free(mem);
#else
if (mem == nullptr)
return;
void* ptr = reinterpret_cast<void*>(*reinterpret_cast<intptr_t*>(static_cast<char*>(mem) - sizeof(void*)));
free(ptr);
#endif
}