add support for vulkan

use `ash` for the vulkan types

Author: russelltg

Cargo.toml

@@ -17,6 +17,7 @@ doctest = false
 
 [dependencies]
 libc = "0.2"
+ash = { version = "0.38.0", optional = true}
 
 [build-dependencies]
 num_cpus   = "1.16"
@@ -109,3 +110,4 @@ avresample = []
 postproc   = []
 swresample = []
 swscale    = []
+vulkan     = ["ash"]

build.rs

@@ -1246,6 +1246,11 @@ fn main() {
         .blocklist_function("y0l")
         .blocklist_function("y1l")
         .blocklist_function("ynl")
+        .blocklist_file("vulkan.h")
+        .blocklist_type("^Vk[A-Z].*")
+        .blocklist_function("^vk[A-Z].*")
+        .blocklist_type("^PFN_vk[A-Z].*")
+        .blocklist_var("^VK_.*")
         .opaque_type("__mingw_ldbl_type_t")
         .default_enum_style(bindgen::EnumVariation::Rust {
             non_exhaustive: env::var("CARGO_FEATURE_NON_EXHAUSTIVE_ENUMS").is_ok(),
@@ -1365,6 +1370,16 @@ fn main() {
         builder = builder.header(hwcontext_drm_header);
     }
 
+    if env::var("CARGO_FEATURE_VULKAN").is_ok() {
+        if let Some(hwcontext_vulkan_header) =
+            maybe_search_include(&include_paths, "libavutil/hwcontext_vulkan.h")
+        {
+            builder = builder.header(hwcontext_vulkan_header);
+        } else {
+            panic!("vulkan feature asked for but no vulkan header?");
+        }
+    }
+
     // Finish the builder and generate the bindings.
     let bindings = builder
         .generate()

src/lib.rs

@@ -9,6 +9,29 @@
 
 extern crate libc;
 
+#[cfg(feature = "vulkan")]
+extern crate ash;
+
+#[cfg(feature = "vulkan")]
+use ash::vk::{
+    Device as VkDevice, Format as VkFormat, Image as VkImage,
+    ImageCreateFlags as VkImageCreateFlags, ImageTiling as VkImageTiling,
+    ImageUsageFlags as VkImageUsageFlagBits, Instance as VkInstance, PFN_vkGetInstanceProcAddr,
+    PhysicalDevice as VkPhysicalDevice,
+    DeviceMemory as VkDeviceMemory,
+    MemoryPropertyFlags as VkMemoryPropertyFlagBits,
+    AccessFlags as VkAccessFlagBits,
+    ImageLayout as VkImageLayout,
+    Semaphore as VkSemaphore,
+    QueueFlags as VkQueueFlagBits,
+    VideoCodecOperationFlagsKHR as VkVideoCodecOperationFlagBitsKHR
+};
+
+#[cfg(feature = "vulkan")]
+type VkAllocationCallbacks = ash::vk::AllocationCallbacks<'static>; // hack!
+#[cfg(feature = "vulkan")]
+type VkPhysicalDeviceFeatures2 = ash::vk::PhysicalDeviceFeatures2<'static>; // hack!
+
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
 #[macro_use]