[FFmpeg-devel] [PATCH] libavcodec: fix -Wint-conversion in vulkan

[Sam James <sam@gentoo.org>]

FIx warnings (soon to be errors in GCC 14, already so in Clang 15):
```
src/libavcodec/vulkan_av1.c: In function ‘vk_av1_create_params’:
src/libavcodec/vulkan_av1.c:183:43: error: initialization of ‘long long unsigned int’ from ‘void *’ makes integer from pointer without a cast [-Wint-conversion]
  183 |         .videoSessionParametersTemplate = NULL,
      |                                           ^~~~
src/libavcodec/vulkan_av1.c:183:43: note: (near initialization for ‘(anonymous).videoSessionParametersTemplate’)
```

Use Vulkan's VK_NULL_HANDLE instead of bare NULL.

Fix Trac ticket #10724.

Was reported downstream in Gentoo at https://bugs.gentoo.org/919067.

Signed-off-by: Sam James <sam@gentoo.org>
---
 libavcodec/vulkan_av1.c    | 2 +-
 libavcodec/vulkan_decode.c | 6 +++---
 libavcodec/vulkan_h264.c   | 2 +-
 libavcodec/vulkan_hevc.c   | 2 +-
 libavcodec/vulkan_video.c  | 2 +-
 5 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/libavcodec/vulkan_av1.c b/libavcodec/vulkan_av1.c
index 4998bf7ebc..9730e4b08d 100644
--- a/libavcodec/vulkan_av1.c
+++ b/libavcodec/vulkan_av1.c
@@ -180,7 +180,7 @@ static int vk_av1_create_params(AVCodecContext *avctx, AVBufferRef **buf)
         .sType = VK_STRUCTURE_TYPE_VIDEO_SESSION_PARAMETERS_CREATE_INFO_KHR,
         .pNext = &av1_params,
         .videoSession = ctx->common.session,
-        .videoSessionParametersTemplate = NULL,
+        .videoSessionParametersTemplate = VK_NULL_HANDLE,
     };
 
     err = ff_vk_decode_create_params(buf, avctx, ctx, &session_params_create);
diff --git a/libavcodec/vulkan_decode.c b/libavcodec/vulkan_decode.c
index a89d84fcaa..fdbcbb450a 100644
--- a/libavcodec/vulkan_decode.c
+++ b/libavcodec/vulkan_decode.c
@@ -188,9 +188,9 @@ int ff_vk_decode_prepare_frame(FFVulkanDecodeContext *dec, AVFrame *pic,
         return 0;
 
     vkpic->dpb_frame     = NULL;
-    vkpic->img_view_ref  = NULL;
-    vkpic->img_view_out  = NULL;
-    vkpic->img_view_dest = NULL;
+    vkpic->img_view_ref  = VK_NULL_HANDLE;
+    vkpic->img_view_out  = VK_NULL_HANDLE;
+    vkpic->img_view_dest = VK_NULL_HANDLE;
 
     vkpic->destroy_image_view = vk->DestroyImageView;
     vkpic->wait_semaphores = vk->WaitSemaphores;
diff --git a/libavcodec/vulkan_h264.c b/libavcodec/vulkan_h264.c
index e727aafb16..39c123ddca 100644
--- a/libavcodec/vulkan_h264.c
+++ b/libavcodec/vulkan_h264.c
@@ -315,7 +315,7 @@ static int vk_h264_create_params(AVCodecContext *avctx, AVBufferRef **buf)
         .sType = VK_STRUCTURE_TYPE_VIDEO_SESSION_PARAMETERS_CREATE_INFO_KHR,
         .pNext = &h264_params,
         .videoSession = ctx->common.session,
-        .videoSessionParametersTemplate = NULL,
+        .videoSessionParametersTemplate = VK_NULL_HANDLE,
     };
 
     /* SPS list */
diff --git a/libavcodec/vulkan_hevc.c b/libavcodec/vulkan_hevc.c
index 99fdcf3b45..033172cbd6 100644
--- a/libavcodec/vulkan_hevc.c
+++ b/libavcodec/vulkan_hevc.c
@@ -653,7 +653,7 @@ static int vk_hevc_create_params(AVCodecContext *avctx, AVBufferRef **buf)
         .sType = VK_STRUCTURE_TYPE_VIDEO_SESSION_PARAMETERS_CREATE_INFO_KHR,
         .pNext = &h265_params,
         .videoSession = ctx->common.session,
-        .videoSessionParametersTemplate = NULL,
+        .videoSessionParametersTemplate = VK_NULL_HANDLE,
     };
 
     HEVCHeaderSet *hdr;
diff --git a/libavcodec/vulkan_video.c b/libavcodec/vulkan_video.c
index 5fa8292b28..fb20315db4 100644
--- a/libavcodec/vulkan_video.c
+++ b/libavcodec/vulkan_video.c
@@ -287,7 +287,7 @@ av_cold void ff_vk_video_common_uninit(FFVulkanContext *s,
     if (common->session) {
         vk->DestroyVideoSessionKHR(s->hwctx->act_dev, common->session,
                                    s->hwctx->alloc);
-        common->session = NULL;
+        common->session = VK_NULL_HANDLE;
     }
 
     if (common->nb_mem && common->mem)
-- 
2.43.0

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