feat(*): switched to spdlog for logging and organized headers (#1183)

* feat: updated PKGBUILD description
* feat: updated workflow syntax and dependencies
* feat: switched logging to spdlog
* chore: adjusted library defaults
* ci: fixed spdlog format string issues
* docs: fixed docs for libvideo2x functions
* feat: organized header files
* fix: fixed header installation directory
* feat: link spdlog statically if compiled from source
* feat: adjusted libvideo2x log level enum names
* feat: added version.h header

Signed-off-by: k4yt3x <i@k4yt3x.com>

include/libvideo2x/libvideo2x.h

@@ -28,6 +28,17 @@ enum FilterType {
     FILTER_REALESRGAN
 };
 
+// Enum to specify log level
+enum Libvideo2xLogLevel {
+    LIBVIDEO2X_LOG_LEVEL_TRACE,
+    LIBVIDEO2X_LOG_LEVEL_DEBUG,
+    LIBVIDEO2X_LOG_LEVEL_INFO,
+    LIBVIDEO2X_LOG_LEVEL_WARNING,
+    LIBVIDEO2X_LOG_LEVEL_ERROR,
+    LIBVIDEO2X_LOG_LEVEL_CRITICAL,
+    LIBVIDEO2X_LOG_LEVEL_OFF
+};
+
 // Configuration for Libplacebo filter
 struct LibplaceboConfig {
     int output_width;
@@ -78,6 +89,7 @@ struct VideoProcessingContext {
 LIBVIDEO2X_API int process_video(
     const char *input_filename,
     const char *output_filename,
+    enum Libvideo2xLogLevel log_level,
     bool benchmark,
     enum AVHWDeviceType hw_device_type,
     const struct FilterConfig *filter_config,

include/libvideo2x/version.h.in

@@ -0,0 +1,6 @@
+#ifndef VERSION_H
+#define VERSION_H
+
+#define LIBVIDEO2X_VERSION_STRING "@PROJECT_VERSION@"
+
+#endif  // VERSION_H