venus: add AHB format and VkFormat conversion helper functions

See "AHardwareBuffer Format Equivalence" in the spec.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10847>

src/virtio/vulkan/vn_android.c

@@ -103,6 +103,49 @@ vn_hal_open(const struct hw_module_t *mod,
    return 0;
 }
 
+static uint32_t
+vn_android_ahb_format_from_vk_format(VkFormat format)
+{
+   switch (format) {
+   case VK_FORMAT_R8G8B8A8_UNORM:
+      return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
+   case VK_FORMAT_R8G8B8_UNORM:
+      return AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM;
+   case VK_FORMAT_R5G6B5_UNORM_PACK16:
+      return AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM;
+   case VK_FORMAT_R16G16B16A16_SFLOAT:
+      return AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT;
+   case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
+      return AHARDWAREBUFFER_FORMAT_R10G10B10A2_UNORM;
+   case VK_FORMAT_G8_B8R8_2PLANE_420_UNORM:
+      return AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_420;
+   default:
+      return 0;
+   }
+}
+
+static VkFormat
+vn_android_ahb_format_to_vk_format(uint32_t format)
+{
+   switch (format) {
+   case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM:
+   case AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM:
+      return VK_FORMAT_R8G8B8A8_UNORM;
+   case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:
+      return VK_FORMAT_R8G8B8_UNORM;
+   case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM:
+      return VK_FORMAT_R5G6B5_UNORM_PACK16;
+   case AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT:
+      return VK_FORMAT_R16G16B16A16_SFLOAT;
+   case AHARDWAREBUFFER_FORMAT_R10G10B10A2_UNORM:
+      return VK_FORMAT_A2B10G10R10_UNORM_PACK32;
+   case AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_420:
+      return VK_FORMAT_G8_B8R8_2PLANE_420_UNORM;
+   default:
+      return VK_FORMAT_UNDEFINED;
+   }
+}
+
 VkResult
 vn_GetSwapchainGrallocUsage2ANDROID(
    VkDevice device,