* Fix Vulkan GPU acceleration for FFmpeg (pull #1497)

CHANGELOG.md

@@ -1,4 +1,5 @@
 
+ * Fix Vulkan GPU acceleration for FFmpeg ([pull #1497](https://github.com/bytedeco/javacpp-presets/pull/1497))
  * Build FFmpeg with zimg to enable zscale filter ([pull #1481](https://github.com/bytedeco/javacpp-presets/pull/1481))
  * Enable PulseAudio support for FFmpeg on Linux ([pull #1472](https://github.com/bytedeco/javacpp-presets/pull/1472))
  * Virtualize `btCollisionWorld`, `btOverlapFilterCallback`, `btOverlapCallback` from Bullet Physics SDK ([pull #1475](https://github.com/bytedeco/javacpp-presets/pull/1475))

ffmpeg/cppbuild.sh

@@ -118,6 +118,7 @@ export PKG_CONFIG_PATH=$INSTALL_PATH/lib/pkgconfig/
 patch -Np1 -d $LAME < ../../lame.patch
 patch -Np1 -d $OPENSSL < ../../openssl-android.patch
 patch -Np1 -d ffmpeg-$FFMPEG_VERSION < ../../ffmpeg.patch
+patch -Np1 -d ffmpeg-$FFMPEG_VERSION < ../../ffmpeg-vulkan.patch
 # patch -Np1 -d ffmpeg-$FFMPEG_VERSION < ../../ffmpeg-flv-support-hevc-opus.patch
 sedinplace 's/bool bEnableavx512/bool bEnableavx512 = false/g' x265-*/source/common/param.h
 sedinplace 's/detect512()/false/g' x265-*/source/common/quant.cpp

ffmpeg/ffmpeg-vulkan.patch

@@ -0,0 +1,14 @@
+diff --git a/libavutil/vulkan.c b/libavutil/vulkan.c
+index 67b9526255..e3c0c4c24a 100644
+--- a/libavutil/vulkan.c
++++ b/libavutil/vulkan.c
+@@ -605,6 +605,9 @@ int ff_vk_exec_add_dep_frame(FFVulkanContext *s, FFVkExecContext *e, AVFrame *f,
+     VkImageLayout *layout_dst;
+     uint32_t *queue_family_dst;
+     VkAccessFlagBits *access_dst;
+
++    if (!f || !f->hw_frames_ctx)
++        return 1;
++
+     AVHWFramesContext *hwfc = (AVHWFramesContext *)f->hw_frames_ctx->data;
+     AVVulkanFramesContext *vkfc = hwfc->hwctx;