feat(logger): add logger manager to provide unified logging (#1267)

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

include/libvideo2x/libvideo2x.h

@@ -12,19 +12,9 @@ extern "C" {
 #include "avutils.h"
 #include "decoder.h"
 #include "encoder.h"
-#include "logutils.h"
+#include "libvideo2x_export.h"
 #include "processor.h"
 
-#ifdef _WIN32
-#ifdef LIBVIDEO2X_EXPORTS
-#define LIBVIDEO2X_API __declspec(dllexport)
-#else
-#define LIBVIDEO2X_API __declspec(dllimport)
-#endif
-#else
-#define LIBVIDEO2X_API
-#endif
-
 namespace video2x {
 
 enum class VideoProcessorState {
@@ -43,7 +33,6 @@ class LIBVIDEO2X_API VideoProcessor {
         const encoder::EncoderConfig enc_cfg,
         const uint32_t vk_device_idx = 0,
         const AVHWDeviceType hw_device_type = AV_HWDEVICE_TYPE_NONE,
-        const logutils::Video2xLogLevel = logutils::Video2xLogLevel::Info,
         const bool benchmark = false
     );
 

include/libvideo2x/libvideo2x_export.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#ifdef _WIN32
+#ifdef LIBVIDEO2X_EXPORTS
+#define LIBVIDEO2X_API __declspec(dllexport)
+#else
+#define LIBVIDEO2X_API __declspec(dllimport)
+#endif
+#else
+#define LIBVIDEO2X_API
+#endif

include/libvideo2x/logger_manager.h

@@ -0,0 +1,48 @@
+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <spdlog/logger.h>
+#include <spdlog/sinks/sink.h>
+
+#include "libvideo2x_export.h"
+
+namespace video2x {
+namespace logger_manager {
+
+class LIBVIDEO2X_API LoggerManager {
+   public:
+    LoggerManager(const LoggerManager &) = delete;
+    LoggerManager &operator=(const LoggerManager &) = delete;
+
+    static LoggerManager &instance();
+
+    std::shared_ptr<spdlog::logger> logger();
+
+    void reconfigure_logger(
+        const std::string &logger_name,
+        const std::vector<spdlog::sink_ptr> &sinks,
+        const std::string &pattern = "%+"
+    );
+
+    bool set_log_level(const std::string &level_str);
+
+    void hook_ffmpeg_logging();
+    void unhook_ffmpeg_logging();
+
+   private:
+    LoggerManager();
+
+    std::shared_ptr<spdlog::logger> logger_;
+};
+
+}  // namespace logger_manager
+
+// Convenience function to get the logger instance
+inline std::shared_ptr<spdlog::logger> logger() {
+    return logger_manager::LoggerManager::instance().logger();
+}
+
+}  // namespace video2x

include/libvideo2x/logutils.h

@@ -1,28 +0,0 @@
-#pragma once
-
-#include <optional>
-
-#include "fsutils.h"
-
-namespace video2x {
-namespace logutils {
-
-enum class Video2xLogLevel {
-    Unknown,
-    Trace,
-    Debug,
-    Info,
-    Warning,
-    Error,
-    Critical,
-    Off
-};
-
-void set_log_level(Video2xLogLevel log_level);
-
-std::optional<Video2xLogLevel> find_log_level_by_name(
-    const fsutils::StringType &log_level_name
-);
-
-}  // namespace logutils
-}  // namespace video2x