avdevice/decklink_common: Move DECKLINK_* string functions into header

This allows other decklink source access to these cross-platform
convenience functions.
Signed-off-by: Marton Balint <cus@passwd.hu>

libavdevice/decklink_common.cpp

@@ -77,36 +77,6 @@ static IDeckLinkIterator *decklink_create_iterator(AVFormatContext *avctx)
     return iter;
 }
 
-#ifdef _WIN32
-static char *dup_wchar_to_utf8(wchar_t *w)
-{
-    char *s = NULL;
-    int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0);
-    s = (char *) av_malloc(l);
-    if (s)
-        WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0);
-    return s;
-}
-#define DECKLINK_STR    OLECHAR *
-#define DECKLINK_STRDUP dup_wchar_to_utf8
-#define DECKLINK_FREE(s) SysFreeString(s)
-#elif defined(__APPLE__)
-static char *dup_cfstring_to_utf8(CFStringRef w)
-{
-    char s[256];
-    CFStringGetCString(w, s, 255, kCFStringEncodingUTF8);
-    return av_strdup(s);
-}
-#define DECKLINK_STR    const __CFString *
-#define DECKLINK_STRDUP dup_cfstring_to_utf8
-#define DECKLINK_FREE(s) CFRelease(s)
-#else
-#define DECKLINK_STR    const char *
-#define DECKLINK_STRDUP av_strdup
-/* free() is needed for a string returned by the DeckLink SDL. */
-#define DECKLINK_FREE(s) free((void *) s)
-#endif
-
 HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName)
 {
     DECKLINK_STR tmpDisplayName;

libavdevice/decklink_common.h

@@ -34,6 +34,36 @@
 #define DECKLINK_BOOL bool
 #endif
 
+#ifdef _WIN32
+static char *dup_wchar_to_utf8(wchar_t *w)
+{
+    char *s = NULL;
+    int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0);
+    s = (char *) av_malloc(l);
+    if (s)
+        WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0);
+    return s;
+}
+#define DECKLINK_STR    OLECHAR *
+#define DECKLINK_STRDUP dup_wchar_to_utf8
+#define DECKLINK_FREE(s) SysFreeString(s)
+#elif defined(__APPLE__)
+static char *dup_cfstring_to_utf8(CFStringRef w)
+{
+    char s[256];
+    CFStringGetCString(w, s, 255, kCFStringEncodingUTF8);
+    return av_strdup(s);
+}
+#define DECKLINK_STR    const __CFString *
+#define DECKLINK_STRDUP dup_cfstring_to_utf8
+#define DECKLINK_FREE(s) CFRelease(s)
+#else
+#define DECKLINK_STR    const char *
+#define DECKLINK_STRDUP av_strdup
+/* free() is needed for a string returned by the DeckLink SDL. */
+#define DECKLINK_FREE(s) free((void *) s)
+#endif
+
 class decklink_output_callback;
 class decklink_input_callback;