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#include "drape/static_texture.hpp"
#include "indexer/map_style_reader.hpp"
#include "platform/platform.hpp"
#include "coding/parse_xml.hpp"
#include "coding/reader.hpp"
#include "base/string_utils.hpp"
#ifdef DEBUG
#include "3party/glm/glm/gtx/bit.hpp"
#endif
#include "3party/stb_image/stb_image.h"
#include <limits>
#include <vector>
namespace dp
{
std::string const StaticTexture::kDefaultResource = "default";
namespace
{
using TLoadingCompletion = function<void(unsigned char *, uint32_t, uint32_t)>;
using TLoadingFailure = function<void(std::string const &)>;
bool LoadData(std::string const & textureName, std::string const & skinPathName,
uint8_t bytesPerPixel, TLoadingCompletion const & completionHandler,
TLoadingFailure const & failureHandler)
{
ASSERT(completionHandler != nullptr, ());
ASSERT(failureHandler != nullptr, ());
std::vector<unsigned char> rawData;
try
{
std::string const fullName = textureName + ".png";
ReaderPtr<Reader> reader = skinPathName == StaticTexture::kDefaultResource ?
GetStyleReader().GetDefaultResourceReader(fullName) :
GetStyleReader().GetResourceReader(fullName, skinPathName);
CHECK_LESS(reader.Size(), static_cast<uint64_t>(std::numeric_limits<size_t>::max()), ());
size_t const size = static_cast<size_t>(reader.Size());
rawData.resize(size);
reader.Read(0, &rawData[0], size);
}
catch (RootException & e)
{
failureHandler(e.what());
return false;
}
int w, h, bpp;
unsigned char * data =
stbi_load_from_memory(&rawData[0], static_cast<int>(rawData.size()), &w, &h, &bpp, 0);
uint8_t constexpr kSupportedBPP = 4;
CHECK_EQUAL(bpp, kSupportedBPP, ("Incorrect texture format"));
ASSERT(glm::isPowerOfTwo(w), (w));
ASSERT(glm::isPowerOfTwo(h), (h));
if (bytesPerPixel != bpp)
{
std::vector<unsigned char> convertedData(static_cast<size_t>(w * h * bytesPerPixel));
uint32_t const pixelsCount = static_cast<uint32_t>(w * h);
for (uint32_t i = 0; i < pixelsCount; i++)
{
unsigned char const * p = data + i * bpp;
for (uint8_t b = 0; b < bytesPerPixel; b++)
convertedData[i * bytesPerPixel + b] = p[b];
}
stbi_image_free(data);
completionHandler(convertedData.data(), static_cast<uint32_t>(w), static_cast<uint32_t>(h));
return true;
}
completionHandler(data, static_cast<uint32_t>(w), static_cast<uint32_t>(h));
stbi_image_free(data);
return true;
}
class StaticResourceInfo : public Texture::ResourceInfo
{
public:
StaticResourceInfo() : Texture::ResourceInfo(m2::RectF(0.0f, 0.0f, 1.0f, 1.0f)) {}
virtual ~StaticResourceInfo() {}
Texture::ResourceType GetType() const override { return Texture::Static; }
};
} // namespace
StaticTexture::StaticTexture(std::string const & textureName, std::string const & skinPathName,
dp::TextureFormat format, ref_ptr<HWTextureAllocator> allocator)
: m_textureName(textureName)
, m_skinPathName(skinPathName)
, m_format(format)
, m_info(make_unique_dp<StaticResourceInfo>())
{
m_isLoadingCorrect = Load(allocator);
}
bool StaticTexture::Load(ref_ptr<HWTextureAllocator> allocator)
{
auto completionHandler = [this, &allocator](unsigned char * data, uint32_t width,
uint32_t height)
{
Texture::Params p;
p.m_allocator = allocator;
p.m_format = m_format;
p.m_width = width;
p.m_height = height;
p.m_wrapSMode = gl_const::GLRepeate;
p.m_wrapTMode = gl_const::GLRepeate;
Create(p, make_ref(data));
};
auto failureHandler = [this](std::string const & reason)
{
LOG(LERROR, (reason));
Fail();
};
uint8_t const bytesPerPixel = GetBytesPerPixel(m_format);
return LoadData(m_textureName, m_skinPathName, bytesPerPixel,
completionHandler, failureHandler);
}
void StaticTexture::Invalidate(ref_ptr<HWTextureAllocator> allocator)
{
Destroy();
m_isLoadingCorrect = Load(allocator);
}
ref_ptr<Texture::ResourceInfo> StaticTexture::FindResource(Texture::Key const & key,
bool & newResource)
{
newResource = false;
if (key.GetType() != Texture::Static)
return nullptr;
return make_ref(m_info);
}
void StaticTexture::Fail()
{
int32_t alphaTexture = 0;
Texture::Params p;
p.m_allocator = GetDefaultAllocator();
p.m_format = dp::RGBA8;
p.m_width = 1;
p.m_height = 1;
Create(p, make_ref(&alphaTexture));
}
} // namespace dp
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