/*
 * Copyright 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __VK_ANDROID_NATIVE_BUFFER_H__
#define __VK_ANDROID_NATIVE_BUFFER_H__

#include <cutils/native_handle.h>
#include <vulkan/vulkan.h>

#ifdef __cplusplus
extern "C" {
#endif

#define VK_ANDROID_native_buffer 1

#define VK_ANDROID_NATIVE_BUFFER_EXTENSION_NUMBER 11
/* NOTE ON VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION 6
 *
 * This version of the extension transitions from gralloc0 to gralloc1 usage
 * flags (int -> 2x uint64_t). The WSI implementation will temporarily continue
 * to fill out deprecated fields in VkNativeBufferANDROID, and will call the
 * deprecated vkGetSwapchainGrallocUsageANDROID if the new
 * vkGetSwapchainGrallocUsage2ANDROID is not supported. This transitionary
 * backwards-compatibility support is temporary, and will likely be removed in
 * (along with all gralloc0 support) in a future release.
 */
/* NOTE ON VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION 8
 *
 * This version of the extension doesn't introduce new types or structs, but is
 * to accommodate the new struct VkBindImageMemorySwapchainInfoKHR added in
 * VK_KHR_swapchain spec version 69. When VkBindImageMemorySwapchainInfoKHR is
 * chained in the pNext chain of VkBindImageMemoryInfo, a VkNativeBufferANDROID
 * that holds the correct gralloc handle according to the imageIndex specified
 * in VkBindImageMemorySwapchainInfoKHR will be additionally chained to the
 * pNext chain of VkBindImageMemoryInfo and passed down to the driver.
 */
#define VK_ANDROID_NATIVE_BUFFER_SPEC_VERSION     8
#define VK_ANDROID_NATIVE_BUFFER_EXTENSION_NAME   "VK_ANDROID_native_buffer"

#define VK_ANDROID_NATIVE_BUFFER_ENUM(type,id)    ((type)(1000000000 + (1000 * (VK_ANDROID_NATIVE_BUFFER_EXTENSION_NUMBER - 1)) + (id)))
#define VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID   VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 0)
#define VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 1)
#define VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID VK_ANDROID_NATIVE_BUFFER_ENUM(VkStructureType, 2)

typedef enum VkSwapchainImageUsageFlagBitsANDROID {
    VK_SWAPCHAIN_IMAGE_USAGE_SHARED_BIT_ANDROID = 0x00000001,
    VK_SWAPCHAIN_IMAGE_USAGE_FLAG_BITS_MAX_ENUM = 0x7FFFFFFF
} VkSwapchainImageUsageFlagBitsANDROID;
typedef VkFlags VkSwapchainImageUsageFlagsANDROID;

typedef struct {
    uint64_t consumer;
    uint64_t producer;
} VkNativeBufferUsage2ANDROID;

typedef struct {
    VkStructureType             sType; // must be VK_STRUCTURE_TYPE_NATIVE_BUFFER_ANDROID
    const void*                 pNext;

    // Buffer handle and stride returned from gralloc alloc()
    buffer_handle_t             handle;
    int                         stride;

    // Gralloc format and usage requested when the buffer was allocated.
    int                         format;
    int                         usage; // DEPRECATED in SPEC_VERSION 6
    // -- Added in SPEC_VERSION 6 --
    VkNativeBufferUsage2ANDROID usage2;
} VkNativeBufferANDROID;

typedef struct {
    VkStructureType                        sType; // must be VK_STRUCTURE_TYPE_SWAPCHAIN_IMAGE_CREATE_INFO_ANDROID
    const void*                            pNext;

    VkSwapchainImageUsageFlagsANDROID      usage;
} VkSwapchainImageCreateInfoANDROID;

typedef struct {
    VkStructureType                        sType; // must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PRESENTATION_PROPERTIES_ANDROID
    const void*                            pNext;

    VkBool32                               sharedImage;
} VkPhysicalDevicePresentationPropertiesANDROID;

// -- DEPRECATED in SPEC_VERSION 6 --
typedef VkResult (VKAPI_PTR *PFN_vkGetSwapchainGrallocUsageANDROID)(VkDevice device, VkFormat format, VkImageUsageFlags imageUsage, int* grallocUsage);
// -- ADDED in SPEC_VERSION 6 --
typedef VkResult (VKAPI_PTR *PFN_vkGetSwapchainGrallocUsage2ANDROID)(VkDevice device, VkFormat format, VkImageUsageFlags imageUsage, VkSwapchainImageUsageFlagsANDROID swapchainImageUsage, uint64_t* grallocConsumerUsage, uint64_t* grallocProducerUsage);
typedef VkResult (VKAPI_PTR *PFN_vkAcquireImageANDROID)(VkDevice device, VkImage image, int nativeFenceFd, VkSemaphore semaphore, VkFence fence);
typedef VkResult (VKAPI_PTR *PFN_vkQueueSignalReleaseImageANDROID)(VkQueue queue, uint32_t waitSemaphoreCount, const VkSemaphore* pWaitSemaphores, VkImage image, int* pNativeFenceFd);

#ifndef VK_NO_PROTOTYPES

// -- DEPRECATED in SPEC_VERSION 6 --
VKAPI_ATTR VkResult VKAPI_CALL vkGetSwapchainGrallocUsageANDROID(
    VkDevice            device,
    VkFormat            format,
    VkImageUsageFlags   imageUsage,
    int*                grallocUsage
);
// -- ADDED in SPEC_VERSION 6 --
VKAPI_ATTR VkResult VKAPI_CALL vkGetSwapchainGrallocUsage2ANDROID(
    VkDevice            device,
    VkFormat            format,
    VkImageUsageFlags   imageUsage,
    VkSwapchainImageUsageFlagsANDROID swapchainImageUsage,
    uint64_t*           grallocConsumerUsage,
    uint64_t*           grallocProducerUsage
);
VKAPI_ATTR VkResult VKAPI_CALL vkAcquireImageANDROID(
    VkDevice            device,
    VkImage             image,
    int                 nativeFenceFd,
    VkSemaphore         semaphore,
    VkFence             fence
);
VKAPI_ATTR VkResult VKAPI_CALL vkQueueSignalReleaseImageANDROID(
    VkQueue             queue,
    uint32_t            waitSemaphoreCount,
    const VkSemaphore*  pWaitSemaphores,
    VkImage             image,
    int*                pNativeFenceFd
);
#endif

#ifdef __cplusplus
}
#endif

#endif // __VK_ANDROID_NATIVE_BUFFER_H__