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>

1 files changed, 30 insertions, 0 deletions

diff --git a/libavdevice/decklink_common.h b/libavdevice/decklink_common.h
index f416134b8a..8064abdcb9 100644
--- a/libavdevice/decklink_common.h
+++ b/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;