minor refactor

src/audio/AL/alutil.h

@@ -0,0 +1,76 @@
+#ifndef SRC_AUDIO_AUDIOUTIL_H_
+#define SRC_AUDIO_AUDIOUTIL_H_
+
+#include <string>
+#include <type_traits>
+#include <cstdint>
+
+#ifdef __APPLE__
+#include <OpenAL/al.h>
+#else
+#include <AL/al.h>
+#endif
+
+#include <glm/glm.hpp>
+#include "../../typedefs.h"
+
+#define AL_CHECK(STATEMENT) STATEMENT; AL::check_errors(__FILE__, __LINE__)
+#define AL_GET_ERROR() AL::check_errors(__FILE__, __LINE__)
+
+namespace AL {
+    bool check_errors(const std::string& filename, const std::uint_fast32_t line);
+
+    /// @brief alGetSourcef wrapper
+    /// @param source target source
+    /// @param field enum value
+    /// @param def default value will be returned in case of error
+    /// @return field value or default
+    inline float getSourcef(uint source, ALenum field, float def=0.0f) {
+        float value = def;
+        AL_CHECK(alGetSourcef(source, field, &value));
+        return value;
+    }
+
+    /// @brief alGetSource3f wrapper
+    /// @param source target source
+    /// @param field enum value
+    /// @param def default value will be returned in case of error
+    /// @return field value or default
+    inline glm::vec3 getSource3f(uint source, ALenum field, glm::vec3 def={}) {
+        glm::vec3 value = def;
+        AL_CHECK(alGetSource3f(source, field, &value.x, &value.y, &value.z));
+        return value;
+    }
+
+    /// @brief alGetSourcei wrapper
+    /// @param source target source
+    /// @param field enum value
+    /// @param def default value will be returned in case of error
+    /// @return field value or default
+    inline float getSourcei(uint source, ALenum field, int def=0) {
+        int value = def;
+        AL_CHECK(alGetSourcei(source, field, &value));
+        return value;
+    }
+
+    static inline ALenum to_al_format(short channels, short bitsPerSample){
+        bool stereo = (channels > 1);
+
+        switch (bitsPerSample) {
+        case 16:
+            if (stereo)
+                return AL_FORMAT_STEREO16;
+            else
+                return AL_FORMAT_MONO16;
+        case 8:
+            if (stereo)
+                return AL_FORMAT_STEREO8;
+            else
+                return AL_FORMAT_MONO8;
+        default:
+            return -1;
+        }
+    }
+}
+
+#endif /* SRC_AUDIO_AUDIOUTIL_H_ */