mirror of
https://github.com/vcmi/vcmi.git
synced 2026-04-24 19:54:52 +02:00
Laserlicht
91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
/*
|
|
* DdsFormat.h, part of VCMI engine
|
|
*
|
|
* Authors: listed in file AUTHORS in main folder
|
|
*
|
|
* License: GNU General Public License v2.0 or later
|
|
* Full text of license available in license.txt file, in main folder
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
#include "../../../lib/Rect.h"
|
|
|
|
struct SDL_Surface;
|
|
|
|
VCMI_LIB_NAMESPACE_BEGIN
|
|
class CInputStream;
|
|
VCMI_LIB_NAMESPACE_END
|
|
|
|
constexpr std::uint32_t FOURCC(char a, char b, char c, char d) noexcept
|
|
{
|
|
return (std::uint32_t(static_cast<std::uint8_t>(a)) ) |
|
|
(std::uint32_t(static_cast<std::uint8_t>(b)) << 8) |
|
|
(std::uint32_t(static_cast<std::uint8_t>(c)) << 16) |
|
|
(std::uint32_t(static_cast<std::uint8_t>(d)) << 24);
|
|
}
|
|
|
|
class DdsFormat
|
|
{
|
|
#pragma pack(push,1)
|
|
struct DDSPixelFormat
|
|
{
|
|
uint32_t size;
|
|
uint32_t flags;
|
|
uint32_t fourCC;
|
|
uint32_t rgbBits;
|
|
uint32_t rMask;
|
|
uint32_t gMask;
|
|
uint32_t bMask;
|
|
uint32_t aMask;
|
|
};
|
|
|
|
struct DDSHeader
|
|
{
|
|
uint32_t size;
|
|
uint32_t flags;
|
|
uint32_t height;
|
|
uint32_t width;
|
|
uint32_t pitchOrLinearSize;
|
|
uint32_t depth;
|
|
uint32_t mipMapCount;
|
|
std::array<uint32_t, 11> reserved1;
|
|
DDSPixelFormat pixel_format;
|
|
uint32_t caps;
|
|
uint32_t caps2;
|
|
uint32_t caps3;
|
|
uint32_t caps4;
|
|
uint32_t reserved2;
|
|
};
|
|
#pragma pack(pop)
|
|
|
|
struct CachedDDS
|
|
{
|
|
uint32_t w;
|
|
uint32_t h;
|
|
size_t memSize;
|
|
std::shared_ptr<std::vector<uint8_t>> rgba;
|
|
};
|
|
|
|
const size_t DDS_CACHE_MEMORY_CAP = 256 * 1024 * 1024; // MB
|
|
size_t currentDDSMemory = 0;
|
|
|
|
std::list<std::string> lruList; // front = most recent
|
|
std::mutex cacheMutex;
|
|
|
|
struct CacheEntry
|
|
{
|
|
CachedDDS data;
|
|
std::list<std::string>::iterator lruIt;
|
|
};
|
|
|
|
std::unordered_map<std::string, CacheEntry> ddsCache;
|
|
|
|
void touchLRU(CacheEntry & e, const std::string & key);
|
|
void evictIfNeeded();
|
|
void insertIntoCache(const std::string & key, const CachedDDS & cd);
|
|
|
|
public:
|
|
SDL_Surface * load(CInputStream * stream, const std::string & cacheName, const Rect * rect = nullptr);
|
|
};
|