directx-va: do not load the DLL if not needed

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/avcodec/d3d11va.c

@@ -348,7 +348,7 @@ static int Open(vlc_va_t *va, AVCodecContext *ctx, enum PixelFormat pix_fmt,
         }
     }
 
-    err = directx_va_Open(va, &sys->dx_sys, ctx, fmt);
+    err = directx_va_Open(va, &sys->dx_sys, ctx, fmt, dx_sys->d3ddev==NULL || va->sys->d3dctx==NULL);
     if (err!=VLC_SUCCESS)
         goto error;
 

modules/codec/avcodec/directx_va.c

@@ -422,13 +422,14 @@ void directx_va_Close(vlc_va_t *va, directx_sys_t *dx_sys)
 }
 
 int directx_va_Open(vlc_va_t *va, directx_sys_t *dx_sys,
-                    AVCodecContext *ctx, const es_format_t *fmt)
+                    AVCodecContext *ctx, const es_format_t *fmt, bool b_dll)
 {
     // TODO va->sys = sys;
     dx_sys->codec_id = ctx->codec_id;
 
     vlc_mutex_init( &dx_sys->surface_lock );
 
+    if (b_dll) {
         /* Load dll*/
         dx_sys->hdecoder_dll = LoadLibrary(dx_sys->psz_decoder_dll);
         if (!dx_sys->hdecoder_dll) {
@@ -436,6 +437,7 @@ int directx_va_Open(vlc_va_t *va, directx_sys_t *dx_sys,
             goto error;
         }
         msg_Dbg(va, "DLLs loaded");
+    }
 
     /* */
     if (dx_sys->pf_create_device(va)) {

modules/codec/avcodec/directx_va.h

@@ -134,7 +134,7 @@ typedef struct
 
 } directx_sys_t;
 
-int directx_va_Open(vlc_va_t *, directx_sys_t *, AVCodecContext *ctx, const es_format_t *fmt);
+int directx_va_Open(vlc_va_t *, directx_sys_t *, AVCodecContext *ctx, const es_format_t *fmt, bool b_dll);
 void directx_va_Close(vlc_va_t *, directx_sys_t *);
 int directx_va_Setup(vlc_va_t *, directx_sys_t *, AVCodecContext *avctx, vlc_fourcc_t *chroma);
 int directx_va_Get(vlc_va_t *, directx_sys_t *, picture_t *pic, uint8_t **data);

modules/codec/avcodec/dxva2.c

@@ -357,7 +357,7 @@ static int Open(vlc_va_t *va, AVCodecContext *ctx, enum PixelFormat pix_fmt,
     if (p_sys!=NULL)
         IDirect3DSurface9_GetDevice(p_sys->surface, (IDirect3DDevice9**) &dx_sys->d3ddev );
 
-    err = directx_va_Open(va, &sys->dx_sys, ctx, fmt);
+    err = directx_va_Open(va, &sys->dx_sys, ctx, fmt, dx_sys->d3ddev==NULL);
     if (err!=VLC_SUCCESS)
         goto error;