1 files changed, 39 insertions, 0 deletions
diff --git a/source/core/StarIODeviceCallbacks.cpp b/source/core/StarIODeviceCallbacks.cpp
new file mode 100644
index 0000000..ca8b692
--- /dev/null
+++ b/source/core/StarIODeviceCallbacks.cpp
@@ -0,0 +1,39 @@
+#include "StarIODeviceCallbacks.hpp"
+#include "vorbis/vorbisfile.h"
+
+namespace Star {
+
+IODeviceCallbacks::IODeviceCallbacks(IODevicePtr device) 
+  : m_device(std::move(device)) {
+  if (!m_device->isOpen())
+    m_device->open(IOMode::Read);
+}
+
+IODevicePtr const& IODeviceCallbacks::device() const {
+  return m_device;
+}
+
+size_t IODeviceCallbacks::readFunc(void* ptr, size_t size, size_t nmemb, void* datasource) {
+  auto* callbacks = static_cast<IODeviceCallbacks*>(datasource);
+  return callbacks->m_device->read((char*)ptr, size * nmemb) / size;
+}
+
+int IODeviceCallbacks::seekFunc(void* datasource, ogg_int64_t offset, int whence) {
+  auto* callbacks = static_cast<IODeviceCallbacks*>(datasource);
+  callbacks->m_device->seek(offset, (IOSeek)whence);
+  return 0;
+}
+
+long int IODeviceCallbacks::tellFunc(void* datasource) {
+  auto* callbacks = static_cast<IODeviceCallbacks*>(datasource);
+  return (long int)callbacks->m_device->pos();
+}
+
+void IODeviceCallbacks::setupOggCallbacks(ov_callbacks& callbacks) {
+  callbacks.read_func = readFunc;
+  callbacks.seek_func = seekFunc;
+  callbacks.tell_func = tellFunc;
+  callbacks.close_func = nullptr;
+}
+
+}
+\ No newline at end of file