[FFmpeg-cvslog] [ffmpeg] branch master updated. a9fb323e88 vulkan: temporarily disable threading for ASIC-based hwaccels

[ffmpeg-git at ffmpeg.org]

The branch, master has been updated
       via  a9fb323e8866255ef537409a3082532025c7a4ff (commit)
      from  5621eee672391680f432075865e7580189ad0097 (commit)


- Log -----------------------------------------------------------------
commit a9fb323e8866255ef537409a3082532025c7a4ff
Author:     Lynne <dev at lynne.ee>
AuthorDate: Sat Aug 9 15:05:55 2025 +0900
Commit:     Lynne <dev at lynne.ee>
CommitDate: Sat Aug 9 15:07:56 2025 +0900

    vulkan: temporarily disable threading for ASIC-based hwaccels
    
    The issue is that a race condition exists between threads locking
    frames, which results in cyclic loops and deadlocks.
    
    Compute-based implementations are not affected.
    
    Fixes #20169

diff --git a/libavcodec/vulkan_av1.c b/libavcodec/vulkan_av1.c
index afbd2347de..788e3cca78 100644
--- a/libavcodec/vulkan_av1.c
+++ b/libavcodec/vulkan_av1.c
@@ -666,5 +666,5 @@ const FFHWAccel ff_av1_vulkan_hwaccel = {
     .uninit                = &ff_vk_decode_uninit,
     .frame_params          = &ff_vk_frame_params,
     .priv_data_size        = sizeof(FFVulkanDecodeContext),
-    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE | HWACCEL_CAP_THREAD_SAFE,
+    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE,
 };
diff --git a/libavcodec/vulkan_h264.c b/libavcodec/vulkan_h264.c
index 09f394dacf..ebe305e7b5 100644
--- a/libavcodec/vulkan_h264.c
+++ b/libavcodec/vulkan_h264.c
@@ -588,5 +588,5 @@ const FFHWAccel ff_h264_vulkan_hwaccel = {
     .uninit                = &ff_vk_decode_uninit,
     .frame_params          = &ff_vk_frame_params,
     .priv_data_size        = sizeof(FFVulkanDecodeContext),
-    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE | HWACCEL_CAP_THREAD_SAFE,
+    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE,
 };
diff --git a/libavcodec/vulkan_hevc.c b/libavcodec/vulkan_hevc.c
index 78ad833308..5e15c6b931 100644
--- a/libavcodec/vulkan_hevc.c
+++ b/libavcodec/vulkan_hevc.c
@@ -953,5 +953,5 @@ const FFHWAccel ff_hevc_vulkan_hwaccel = {
     .uninit                = &ff_vk_decode_uninit,
     .frame_params          = &ff_vk_frame_params,
     .priv_data_size        = sizeof(FFVulkanDecodeContext),
-    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE | HWACCEL_CAP_THREAD_SAFE,
+    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE,
 };
diff --git a/libavcodec/vulkan_vp9.c b/libavcodec/vulkan_vp9.c
index ddb4eccc3c..f8ce73dc90 100644
--- a/libavcodec/vulkan_vp9.c
+++ b/libavcodec/vulkan_vp9.c
@@ -366,5 +366,5 @@ const FFHWAccel ff_vp9_vulkan_hwaccel = {
     .uninit                = &ff_vk_decode_uninit,
     .frame_params          = &ff_vk_frame_params,
     .priv_data_size        = sizeof(FFVulkanDecodeContext),
-    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE | HWACCEL_CAP_THREAD_SAFE,
+    .caps_internal         = HWACCEL_CAP_ASYNC_SAFE,
 };

-----------------------------------------------------------------------

Summary of changes:
 libavcodec/vulkan_av1.c  | 2 +-
 libavcodec/vulkan_h264.c | 2 +-
 libavcodec/vulkan_hevc.c | 2 +-
 libavcodec/vulkan_vp9.c  | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)


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