1 files changed, 77 insertions, 0 deletions
diff --git a/loader/dshow/mediatype.h b/loader/dshow/mediatype.h
new file mode 100644
index 0000000000..cc77e1e3b9
--- /dev/null
+++ b/loader/dshow/mediatype.h
@@ -0,0 +1,77 @@
+/*
+-------------------------------------------------------------------
+    AM_MEDIA_TYPE service functions declarations
+-------------------------------------------------------------------
+*/
+#include "guids.h"
+                  
+/**
+ * \brief print info from AM_MEDIA_TYPE structure
+ * =param[in] label short lable for media type
+ * \param[in] pmt pointer to AM_MEDIA_TYPE
+ * 
+ * routine used for debug purposes
+ *
+ */
+void DisplayMediaType(const char * label,const AM_MEDIA_TYPE* pmt);
+/**
+ * \brief frees memory, pointed by pbFormat and pUnk members of AM_MEDIA_TYPE structure
+ *
+ * \param[in] pmt pointer to structure
+ *
+ * \note
+ * routine does not frees memory allocated for AM_MEDIA_TYPE, so given pointer will be
+ * valid after this routine call.
+ *
+ */
+void FreeMediaType(AM_MEDIA_TYPE* pmt);
+/**
+ * \brief frees memory allocated for AM_MEDIA_TYPE structure, including pbFormat and pUnk
+ *        members
+ *
+ * \param[in] pmt pointer to structure
+ *
+ * \note
+ * after call to this routine, pointer to AM_MEDIA_TYPE will not be valid anymore
+ *
+ */
+void DeleteMediaType(AM_MEDIA_TYPE* pmt);
+/**
+ * \brief copyies info from source to destination AM_MEDIA_TYPE structures
+ *
+ * \param[in] pSrc pointer to AM_MEDIA_TYPE structure to copy data from
+ * \param[out] pDst pointer to AM_MEDIA_TYPE structure to copy data to
+ *
+ * \return S_OK - success
+ * \return E_POINTER - pSrc or pDst is NULL or (pSrc->cbFormat && !pSrc->pbFormat)
+ * \return E_INVALIDARG - (pSrc == pDst) 
+ * \return E_OUTOFMEMORY - Insufficient memory
+ *
+ * \note
+ * - pDst must point to existing AM_MEDIA_TYPE structure (all data will be overwritten)
+ * - if pDst->pbFormat!=NULL this will cause memory leak (as described in Directshow SDK)!
+ *
+ */
+HRESULT CopyMediaType(AM_MEDIA_TYPE* pDst,const AM_MEDIA_TYPE* pSrc);
+/**
+ * \brief allocates new AM_MEDIA_TYPE structure and fills it with info from given one
+ *
+ * \param[in] pSrc pointer to AM_MEDIA_TYPE structure to copy data from
+ *
+ * \return result code, returned from CopyMediaType
+ *
+ */
+AM_MEDIA_TYPE* CreateMediaType(const AM_MEDIA_TYPE* pSrc);
+
+/**
+ * \brief compares two AM_MEDIA_TYPE structures for compatibility
+ *
+ * \param[in] pmt1 first  AM_MEDIA_TYPE structure for compare
+ * \param[in] pmt2 second AM_MEDIA_TYPE structure for compare
+ * \param[in] bWildcards 1 means that GUID_NULL of one structure will be compatible with any value of another structure
+ *
+ * \return 1 if structures are compatible
+ * \return 0 if structures are not compatible
+ *
+ */
+int CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, int bWildcards);