dxva2: Pass variable of correct type to IDirectXVideoDecoder_GetBuffer()

This avoids related incompatible pointer type warnings.

libavcodec/dxva2_h264.c

@@ -297,6 +297,7 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
     const H264Picture *current_picture = h->cur_pic_ptr;
     struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
     DXVA_Slice_H264_Short *slice = NULL;
+    void     *dxva_data_ptr;
     uint8_t  *dxva_data, *current, *end;
     unsigned dxva_size;
     void     *slice_data;
@@ -307,8 +308,10 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
     /* Create an annex B bitstream buffer with only slice NAL and finalize slice */
     if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder,
                                               DXVA2_BitStreamDateBufferType,
-                                               &dxva_data, &dxva_size)))
+                                              &dxva_data_ptr, &dxva_size)))
         return -1;
+
+    dxva_data = dxva_data_ptr;
     current = dxva_data;
     end = dxva_data + dxva_size;
 

libavcodec/dxva2_mpeg2.c

@@ -156,14 +156,17 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
         s->current_picture_ptr->hwaccel_picture_private;
     const int is_field = s->picture_structure != PICT_FRAME;
     const unsigned mb_count = s->mb_width * (s->mb_height >> is_field);
+    void     *dxva_data_ptr;
     uint8_t  *dxva_data, *current, *end;
     unsigned dxva_size;
     unsigned i;
 
     if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder,
                                               DXVA2_BitStreamDateBufferType,
-                                              &dxva_data, &dxva_size)))
+                                              &dxva_data_ptr, &dxva_size)))
         return -1;
+
+    dxva_data = dxva_data_ptr;
     current = dxva_data;
     end = dxva_data + dxva_size;
 

libavcodec/dxva2_vc1.c

@@ -173,15 +173,17 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
     const unsigned padding = 128 - ((start_code_size + slice_size) & 127);
     const unsigned data_size = start_code_size + slice_size + padding;
 
+    void     *dxva_data_ptr;
     uint8_t  *dxva_data;
     unsigned dxva_size;
     int result;
 
     if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder,
                                               DXVA2_BitStreamDateBufferType,
-                                              &dxva_data, &dxva_size)))
+                                              &dxva_data_ptr, &dxva_size)))
         return -1;
 
+    dxva_data = dxva_data_ptr;
     result = data_size <= dxva_size ? 0 : -1;
     if (!result) {
         if (start_code_size > 0)