[Mesa-dev] [RFC 3/6] anv/android: add GetAndroidHardwareBufferPropertiesANDROID WIP

[Tapani Pälli]

TODO - need to figure out implementation-defined external format identifier
     - YUV support

Signed-off-by: Tapani Pälli <tapani.palli at intel.com>
---
 src/intel/vulkan/anv_android.c | 91 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)

diff --git a/src/intel/vulkan/anv_android.c b/src/intel/vulkan/anv_android.c
index 7e07dbaaa4..6c0c8cc793 100644
--- a/src/intel/vulkan/anv_android.c
+++ b/src/intel/vulkan/anv_android.c
@@ -29,6 +29,8 @@
 #include <sync/sync.h>
 
 #include "anv_private.h"
+#include "vk_format_info.h"
+#include "vk_util.h"
 
 static int anv_hal_open(const struct hw_module_t* mod, const char* id, struct hw_device_t** dev);
 static int anv_hal_close(struct hw_device_t *dev);
@@ -96,6 +98,95 @@ anv_hal_close(struct hw_device_t *dev)
    return -1;
 }
 
+static VkResult
+get_ahw_buffer_format_properties(
+   VkDevice device_h,
+   const struct AHardwareBuffer *buffer,
+   VkAndroidHardwareBufferFormatPropertiesANDROID *pProperties)
+{
+   ANV_FROM_HANDLE(anv_device, device, device_h);
+
+   /* Get a description of buffer contents . */
+   AHardwareBuffer_Desc desc;
+   AHardwareBuffer_describe(buffer, &desc);
+
+   /* Verify description. */
+   uint64_t gpu_usage =
+      AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE |
+      AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT |
+      AHARDWAREBUFFER_USAGE_GPU_DATA_BUFFER;
+
+   /* "Buffer must be a valid Android hardware buffer object with at least
+    * one of the AHARDWAREBUFFER_USAGE_GPU_* usage flags."
+    */
+   if (!(desc.usage & (gpu_usage)))
+      return VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR;
+
+   /* Fill properties fields based on description. */
+   VkAndroidHardwareBufferFormatPropertiesANDROID *p = pProperties;
+
+   p->pNext = NULL;
+   p->format = vk_format_from_android(desc.format);
+   p->externalFormat = 1; /* XXX */
+
+   const struct anv_format *anv_format = anv_get_format(p->format);
+   struct anv_physical_device *physical_device =
+      &device->instance->physicalDevice;
+   const struct gen_device_info *devinfo = &physical_device->info;
+
+   p->formatFeatures =
+      anv_get_image_format_features(devinfo, p->format,
+                                    anv_format, VK_IMAGE_TILING_OPTIMAL);
+
+   p->samplerYcbcrConversionComponents.r = VK_COMPONENT_SWIZZLE_IDENTITY;
+   p->samplerYcbcrConversionComponents.g = VK_COMPONENT_SWIZZLE_IDENTITY;
+   p->samplerYcbcrConversionComponents.b = VK_COMPONENT_SWIZZLE_IDENTITY;
+   p->samplerYcbcrConversionComponents.a = VK_COMPONENT_SWIZZLE_IDENTITY;
+
+   p->suggestedYcbcrModel = VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY;
+   p->suggestedYcbcrRange = VK_SAMPLER_YCBCR_RANGE_ITU_FULL;
+   p->suggestedXChromaOffset = VK_CHROMA_LOCATION_COSITED_EVEN;
+   p->suggestedYChromaOffset = VK_CHROMA_LOCATION_COSITED_EVEN;
+
+   return VK_SUCCESS;
+}
+
+VkResult
+anv_GetAndroidHardwareBufferPropertiesANDROID(
+   VkDevice device_h,
+   const struct AHardwareBuffer *buffer,
+   VkAndroidHardwareBufferPropertiesANDROID *pProperties)
+{
+   ANV_FROM_HANDLE(anv_device, dev, device_h);
+   struct anv_physical_device *pdevice = &dev->instance->physicalDevice;
+
+   const VkExternalFormatANDROID *format_prop =
+      vk_find_struct_const(pProperties->pNext,
+                           ANDROID_HARDWARE_BUFFER_FORMAT_PROPERTIES_ANDROID);
+
+   /* Fill format properties of an Android hardware buffer. */
+   if (format_prop)
+      get_ahw_buffer_format_properties(device_h, buffer, format_prop);
+
+   /* Get a description of buffer contents . */
+   AHardwareBuffer_Desc desc;
+   AHardwareBuffer_describe(buffer, &desc);
+
+   const native_handle_t *handle =
+      AHardwareBuffer_getNativeHandle(buffer);
+   int dma_buf = (handle && handle->numFds) ? handle->data[0] : -1;
+   if (dma_buf < 0)
+      return VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR;
+
+   /* All memory types. */
+   uint32_t memory_types = (1ull << pdevice->memory.type_count) - 1;
+
+   pProperties->allocationSize = lseek(dma_buf, 0, SEEK_END);
+   pProperties->memoryTypeBits = memory_types;
+
+   return VK_SUCCESS;
+}
+
 VkResult
 anv_image_from_gralloc(VkDevice device_h,
                        const VkImageCreateInfo *base_info,
-- 
2.14.3