4 files changed, 4 insertions, 4 deletions
diff --git a/src/libw32dll/DirectShow/DS_AudioDecoder.c b/src/libw32dll/DirectShow/DS_AudioDecoder.c
index 84e84747e..c411095e1 100644
--- a/src/libw32dll/DirectShow/DS_AudioDecoder.c
+++ b/src/libw32dll/DirectShow/DS_AudioDecoder.c
@@ -33,7 +33,7 @@ struct _DS_AudioDecoder
 
 typedef long STDCALL (*GETCLASS) (GUID*, GUID*, void**);
 
-DS_AudioDecoder * DS_AudioDecoder_Open(char* dllname, GUID* guid, WAVEFORMATEX* wf)
+DS_AudioDecoder * DS_AudioDecoder_Open(const char* dllname, GUID* guid, WAVEFORMATEX* wf)
 //DS_AudioDecoder * DS_AudioDecoder_Create(const CodecInfo * info, const WAVEFORMATEX* wf)
 {
     DS_AudioDecoder *this;
diff --git a/src/libw32dll/DirectShow/DS_AudioDecoder.h b/src/libw32dll/DirectShow/DS_AudioDecoder.h
index 9628f65d2..c88da50f8 100644
--- a/src/libw32dll/DirectShow/DS_AudioDecoder.h
+++ b/src/libw32dll/DirectShow/DS_AudioDecoder.h
@@ -4,7 +4,7 @@
 typedef struct _DS_AudioDecoder DS_AudioDecoder;
 
 //DS_AudioDecoder * DS_AudioDecoder_Create(const CodecInfo * info, const WAVEFORMATEX* wf);
-DS_AudioDecoder * DS_AudioDecoder_Open(char* dllname, GUID* guid, WAVEFORMATEX* wf);
+DS_AudioDecoder * DS_AudioDecoder_Open(const char* dllname, GUID* guid, WAVEFORMATEX* wf);
 
 void DS_AudioDecoder_Destroy(DS_AudioDecoder *this);
 
diff --git a/src/libw32dll/DirectShow/DS_VideoDecoder.c b/src/libw32dll/DirectShow/DS_VideoDecoder.c
index f88e480e3..b179b1a34 100644
--- a/src/libw32dll/DirectShow/DS_VideoDecoder.c
+++ b/src/libw32dll/DirectShow/DS_VideoDecoder.c
@@ -82,7 +82,7 @@ static ct check[] = {
 	    };
 
 
-DS_VideoDecoder * DS_VideoDecoder_Open(char* dllname, GUID* guid, BITMAPINFOHEADER * format, int flip, int maxauto)
+DS_VideoDecoder * DS_VideoDecoder_Open(const char* dllname, GUID* guid, BITMAPINFOHEADER * format, int flip, int maxauto)
 {
     DS_VideoDecoder *this;
     HRESULT result;
diff --git a/src/libw32dll/DirectShow/DS_VideoDecoder.h b/src/libw32dll/DirectShow/DS_VideoDecoder.h
index 82e76f66a..889728799 100644
--- a/src/libw32dll/DirectShow/DS_VideoDecoder.h
+++ b/src/libw32dll/DirectShow/DS_VideoDecoder.h
@@ -5,7 +5,7 @@ typedef struct _DS_VideoDecoder DS_VideoDecoder;
 
 int DS_VideoDecoder_GetCapabilities(DS_VideoDecoder *this);
 
-DS_VideoDecoder * DS_VideoDecoder_Open(char* dllname, GUID* guid, BITMAPINFOHEADER * format, int flip, int maxauto);
+DS_VideoDecoder * DS_VideoDecoder_Open(const char* dllname, GUID* guid, BITMAPINFOHEADER * format, int flip, int maxauto);
 
 void DS_VideoDecoder_Destroy(DS_VideoDecoder *this);