libavutil/hwcontext_opencl: fix a bug for mapping qsv frame to opencl

mfxHDLPair was added to qsv, so modify qsv->opencl map function as well.
Now the following commandline works:

ffmpeg -v verbose -init_hw_device vaapi=va:/dev/dri/renderD128 \
-init_hw_device qsv=qs@va -init_hw_device opencl=ocl@va -filter_hw_device ocl \
-hwaccel qsv -hwaccel_output_format qsv -hwaccel_device qs -c:v h264_qsv \
-i input.264 -vf "hwmap=derive_device=opencl,format=opencl,avgblur_opencl, \
hwmap=derive_device=qsv:reverse=1:extra_hw_frames=32,format=qsv" \
-c:v h264_qsv output.264

Signed-off-by: nyanmisaka <nst799610810@gmail.com>
Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>

libavutil/hwcontext_opencl.c

@@ -72,6 +72,12 @@
 #include "hwcontext_drm.h"
 #endif
 
+#if HAVE_OPENCL_VAAPI_INTEL_MEDIA && CONFIG_LIBMFX
+extern int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
+                                          enum AVHWDeviceType base_dev_typ,
+                                          void **base_handle);
+#endif
+
 
 typedef struct OpenCLDeviceContext {
     // Default command queue to use for transfer/mapping operations on
@@ -2248,8 +2254,14 @@ static int opencl_map_from_qsv(AVHWFramesContext *dst_fc, AVFrame *dst,
 
 #if CONFIG_LIBMFX
     if (src->format == AV_PIX_FMT_QSV) {
+        void *base_handle;
         mfxFrameSurface1 *mfx_surface = (mfxFrameSurface1*)src->data[3];
-        va_surface = *(VASurfaceID*)mfx_surface->Data.MemId;
+        err = ff_qsv_get_surface_base_handle(mfx_surface,
+                                             AV_HWDEVICE_TYPE_VAAPI,
+                                             &base_handle);
+        if (err < 0)
+            return err;
+        va_surface = *(VASurfaceID *)base_handle;
     } else
 #endif
         if (src->format == AV_PIX_FMT_VAAPI) {

libavutil/hwcontext_qsv.c

@@ -112,6 +112,40 @@ static const struct {
 #endif
 };
 
+extern int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
+                                          enum AVHWDeviceType base_dev_type,
+                                          void **base_handle);
+
+/**
+ * Caller needs to allocate enough space for base_handle pointer.
+ **/
+int ff_qsv_get_surface_base_handle(mfxFrameSurface1 *surf,
+                                   enum AVHWDeviceType base_dev_type,
+                                   void **base_handle)
+{
+    mfxHDLPair *handle_pair;
+    handle_pair = surf->Data.MemId;
+    switch (base_dev_type) {
+#if CONFIG_VAAPI
+    case AV_HWDEVICE_TYPE_VAAPI:
+        base_handle[0] = handle_pair->first;
+        return 0;
+#endif
+#if CONFIG_D3D11VA
+    case AV_HWDEVICE_TYPE_D3D11VA:
+        base_handle[0] = handle_pair->first;
+        base_handle[1] = handle_pair->secode;
+        return 0;
+#endif
+#if CONFIG_DXVA2
+    case AV_HWDEVICE_TYPE_DXVA2:
+        base_handle[0] = handle_pair->first;
+        return 0;
+#endif
+    }
+    return AVERROR(EINVAL);
+}
+
 static uint32_t qsv_fourcc_from_pix_fmt(enum AVPixelFormat pix_fmt)
 {
     int i;