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Image: Support loading/saving WebP

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Stenzek 2024-03-24 14:27:09 +10:00
parent cd3c88ad7e
commit f3c0c14b2a
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1 changed files with 63 additions and 0 deletions
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63
src/util/image.cpp
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@ -13,6 +13,8 @@
#include <jpeglib.h>
#include <png.h>
#include <webp/decode.h>
#include <webp/encode.h>
// clang-format off
#ifdef _MSC_VER
@ -33,6 +35,11 @@ static bool JPEGBufferSaver(const RGBA8Image& image, std::vector<u8>* buffer, u8
static bool JPEGFileLoader(RGBA8Image* image, const char* filename, std::FILE* fp);
static bool JPEGFileSaver(const RGBA8Image& image, const char* filename, std::FILE* fp, u8 quality);
static bool WebPBufferLoader(RGBA8Image* image, const void* buffer, size_t buffer_size);
static bool WebPBufferSaver(const RGBA8Image& image, std::vector<u8>* buffer, u8 quality);
static bool WebPFileLoader(RGBA8Image* image, const char* filename, std::FILE* fp);
static bool WebPFileSaver(const RGBA8Image& image, const char* filename, std::FILE* fp, u8 quality);
struct FormatHandler
{
const char* extension;
@ -46,6 +53,7 @@ static constexpr FormatHandler s_format_handlers[] = {
{"png", PNGBufferLoader, PNGBufferSaver, PNGFileLoader, PNGFileSaver},
{"jpg", JPEGBufferLoader, JPEGBufferSaver, JPEGFileLoader, JPEGFileSaver},
{"jpeg", JPEGBufferLoader, JPEGBufferSaver, JPEGFileLoader, JPEGFileSaver},
{"webp", WebPBufferLoader, WebPBufferSaver, WebPFileLoader, WebPFileSaver},
};
static const FormatHandler* GetFormatHandler(const std::string_view& extension)
@ -607,3 +615,58 @@ bool JPEGFileSaver(const RGBA8Image& image, const char* filename, std::FILE* fp,
{
return WrapJPEGCompress(image, quality, [fp](jpeg_compress_struct& info) { jpeg_stdio_dest(&info, fp); });
}
bool WebPBufferLoader(RGBA8Image* image, const void* buffer, size_t buffer_size)
{
int width, height;
if (!WebPGetInfo(static_cast<const u8*>(buffer), buffer_size, &width, &height) || width <= 0 || height <= 0)
{
Log_ErrorPrint("WebPGetInfo() failed");
return false;
}
std::vector<u32> pixels;
pixels.resize(static_cast<u32>(width) * static_cast<u32>(height));
if (!WebPDecodeRGBAInto(static_cast<const u8*>(buffer), buffer_size, reinterpret_cast<u8*>(pixels.data()),
sizeof(u32) * pixels.size(), sizeof(u32) * static_cast<u32>(width)))
{
Log_ErrorPrint("WebPDecodeRGBAInto() failed");
return false;
}
image->SetPixels(static_cast<u32>(width), static_cast<u32>(height), std::move(pixels));
return true;
}
bool WebPBufferSaver(const RGBA8Image& image, std::vector<u8>* buffer, u8 quality)
{
u8* encoded_data;
const size_t encoded_size =
WebPEncodeRGBA(reinterpret_cast<const u8*>(image.GetPixels()), image.GetWidth(), image.GetHeight(),
image.GetPitch(), static_cast<float>(quality), &encoded_data);
if (encoded_size == 0)
return false;
buffer->resize(encoded_size);
std::memcpy(buffer->data(), encoded_data, encoded_size);
WebPFree(encoded_data);
return true;
}
bool WebPFileLoader(RGBA8Image* image, const char* filename, std::FILE* fp)
{
std::optional<std::vector<u8>> data = FileSystem::ReadBinaryFile(fp);
if (!data.has_value())
return false;
return WebPBufferLoader(image, data->data(), data->size());
}
bool WebPFileSaver(const RGBA8Image& image, const char* filename, std::FILE* fp, u8 quality)
{
std::vector<u8> buffer;
if (!WebPBufferSaver(image, &buffer, quality))
return false;
return (std::fwrite(buffer.data(), buffer.size(), 1, fp) == 1);
}