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Common/Image: Add save helpers, fix errors

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This commit is contained in:
Connor McLaughlin 2020-12-24 03:12:50 +10:00
parent 34dace4506
commit f6c0156eea
2 changed files with 54 additions and 2 deletions
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51
src/common/image.cpp
View file

@ -2,6 +2,8 @@
#include "file_system.h"
#include "log.h"
#include "stb_image.h"
#include "stb_image_write.h"
#include "string_util.h"
Log_SetChannel(Common::Image);
namespace Common {
@ -43,4 +45,53 @@ bool LoadImageFromBuffer(Common::RGBA8Image* image, const void* buffer, std::siz
stbi_image_free(pixel_data);
return true;
}
bool WriteImageToFile(const RGBA8Image& image, const char* filename)
{
const char* extension = std::strrchr(filename, '.');
if (!extension)
{
Log_ErrorPrintf("Unable to determine file extension for '%s'", filename);
return false;
}
auto fp = FileSystem::OpenManagedCFile(filename, "wb");
if (!fp)
return {};
const auto write_func = [](void* context, void* data, int size) {
std::fwrite(data, 1, size, static_cast<std::FILE*>(context));
};
bool result = false;
if (StringUtil::Strcasecmp(extension, ".png") == 0)
{
result = (stbi_write_png_to_func(write_func, fp.get(), image.GetWidth(), image.GetHeight(), 4, image.GetPixels(),
image.GetByteStride()) != 0);
}
else if (StringUtil::Strcasecmp(extension, ".jpg") == 0)
{
result = (stbi_write_jpg_to_func(write_func, fp.get(), image.GetWidth(), image.GetHeight(), 4, image.GetPixels(),
95) != 0);
}
else if (StringUtil::Strcasecmp(extension, ".tga") == 0)
{
result =
(stbi_write_tga_to_func(write_func, fp.get(), image.GetWidth(), image.GetHeight(), 4, image.GetPixels()) != 0);
}
else if (StringUtil::Strcasecmp(extension, ".bmp") == 0)
{
result =
(stbi_write_bmp_to_func(write_func, fp.get(), image.GetWidth(), image.GetHeight(), 4, image.GetPixels()) != 0);
}
if (!result)
{
Log_ErrorPrintf("Unknown extension in filename '%s' or save error: '%s'", filename, extension);
return false;
}
return true;
}
} // namespace Common

5
src/common/image.h
View file

@ -23,7 +23,7 @@ public:
{
m_width = move.m_width;
m_height = move.m_height;
m_pixels = std::move(move.m_width);
m_pixels = std::move(move.m_pixels);
move.m_width = 0;
move.m_height = 0;
}
@ -39,7 +39,7 @@ public:
{
m_width = move.m_width;
m_height = move.m_height;
m_pixels = std::move(move.m_width);
m_pixels = std::move(move.m_pixels);
move.m_width = 0;
move.m_height = 0;
return *this;
@ -94,5 +94,6 @@ using RGBA8Image = Image<u32>;
bool LoadImageFromFile(Common::RGBA8Image* image, const char* filename);
bool LoadImageFromBuffer(Common::RGBA8Image* image, const void* buffer, std::size_t buffer_size);
bool WriteImageToFile(const Common::RGBA8Image& image, const char* filename);
} // namespace Common