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[RFC] Filetype detection without extension (#77)

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* first draft of filetype detection

* Nix: add file dependency

* Fix coding style mistake

* Manually format my code

---------

Co-authored-by: Mihai Fufezan <fufexan@protonmail.com>
This commit is contained in:
XenHat 2023-06-23 16:33:33 -04:00 committed by GitHub
parent 64d0ebd666
commit a1d9ab7584
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3 changed files with 21 additions and 2 deletions
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1
CMakeLists.txt
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@ -64,6 +64,7 @@ target_link_libraries(hyprpaper
OpenGL
GLESv2
pthread
magic
${CMAKE_THREAD_LIBS_INIT}
${CMAKE_SOURCE_DIR}/wlr-layer-shell-unstable-v1-protocol.o
${CMAKE_SOURCE_DIR}/xdg-shell-protocol.o

2
nix/default.nix
View file

@ -5,6 +5,7 @@
cmake,
ninja,
cairo,
file,
fribidi,
libdatrie,
libjpeg,
@ -34,6 +35,7 @@ stdenv.mkDerivation {
buildInputs = [
cairo
file
fribidi
libdatrie
libjpeg

20
src/render/WallpaperTarget.cpp
View file

@ -1,5 +1,7 @@
#include "WallpaperTarget.hpp"
#include <magic.h>
CWallpaperTarget::~CWallpaperTarget() {
cairo_surface_destroy(m_pCairoSurface);
}
@ -17,8 +19,22 @@ void CWallpaperTarget::create(const std::string& path) {
CAIROSURFACE = JPEG::createSurfaceFromJPEG(path);
m_bHasAlpha = false;
} else {
Debug::log(CRIT, "unrecognized image %s", path.c_str());
exit(1);
// magic is slow, so only use it when no recognized extension is found
auto handle = magic_open(MAGIC_NONE|MAGIC_COMPRESS);
magic_load(handle, nullptr);
const auto type_str = std::string(magic_file(handle, path.c_str()));
const auto first_word = type_str.substr(0, type_str.find(" "));
if (first_word == "PNG") {
CAIROSURFACE = cairo_image_surface_create_from_png(path.c_str());
} else if (first_word == "JPEG") {
CAIROSURFACE = JPEG::createSurfaceFromJPEG(path);
m_bHasAlpha = false;
} else {
Debug::log(CRIT, "unrecognized image %s", path.c_str());
exit(1);
}
}
if (cairo_surface_status(CAIROSURFACE) != CAIRO_STATUS_SUCCESS) {