/*
** Copyright (c) 2018-2020 Valve Corporation
** Copyright (c) 2018-2020 LunarG, Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and associated documentation files (the "Software"),
** to deal in the Software without restriction, including without limitation
** the rights to use, copy, modify, merge, publish, distribute, sublicense,
** and/or sell copies of the Software, and to permit persons to whom the
** Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
** FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
*/

#ifndef GFXRECON_FORMAT_FORMAT_H
#define GFXRECON_FORMAT_FORMAT_H

#include "format/api_call_id.h"
#include "util/compressor.h"
#include "util/defines.h"

#include <cinttypes>
#include <type_traits>

#define GFXRECON_FOURCC GFXRECON_MAKE_FOURCC('G', 'F', 'X', 'R')
#define GFXRECON_FILE_EXTENSION ".gfxr"

GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(format)

// Types to define encoding sizes.
typedef uint32_t EnumEncodeType;
typedef uint32_t FlagsEncodeType;
typedef uint64_t Flags64EncodeType;
typedef uint32_t SampleMaskEncodeType;
typedef uint64_t HandleEncodeType;
typedef uint64_t DeviceSizeEncodeType;
typedef uint64_t DeviceAddressEncodeType;
typedef uint64_t SizeTEncodeType;
typedef uint64_t AddressEncodeType;
typedef uint8_t  CharEncodeType;  // Encoding type for UTF-8 strings.
typedef uint16_t WCharEncodeType; // Encoding type for LPCWSTR (UTF-16) strings.

typedef HandleEncodeType HandleId;
typedef uint64_t         ThreadId;

const uint32_t kCompressedBlockTypeBit    = 0x80000000;
const size_t   kUuidSize                  = 16;
const size_t   kMaxPhysicalDeviceNameSize = 256;
const HandleId kNullHandleId              = 0;

constexpr uint32_t MakeCompressedBlockType(uint32_t block_type)
{
    return kCompressedBlockTypeBit | block_type;
}

// clang-format off
enum BlockType : uint32_t
{
    kUnknownBlock                = 0,
    kFrameMarkerBlock            = 1, // Marker to denote frame status, such as the start or end of a frame.
    kStateMarkerBlock            = 2, // Marker to denote state snapshot status, such as the start or end of a state snapshot.
    kMetaDataBlock               = 3,
    kFunctionCallBlock           = 4,
    kAnnotation                  = 5,
    kCompressedMetaDataBlock     = MakeCompressedBlockType(kMetaDataBlock),
    kCompressedFunctionCallBlock = MakeCompressedBlockType(kFunctionCallBlock)
};

enum MarkerType : uint32_t
{
    kUnknownMarker = 0,
    kBeginMarker   = 1,
    kEndMarker     = 2
};

enum AnnotationType : uint32_t
{
    kUnknown = 0,
    kText    = 1,
    kJson    = 2,
    kXml     = 3
};

enum MetaDataType : uint32_t
{
    kUnknownMetaDataType                    = 0,
    kDisplayMessageCommand                  = 1,
    kFillMemoryCommand                      = 2,
    kResizeWindowCommand                    = 3,
    kSetSwapchainImageStateCommand          = 4,
    kBeginResourceInitCommand               = 5,
    kEndResourceInitCommand                 = 6,
    kInitBufferCommand                      = 7,
    kInitImageCommand                       = 8,
    kCreateHardwareBufferCommand            = 9,
    kDestroyHardwareBufferCommand           = 10,
    kSetDevicePropertiesCommand             = 11,
    kSetDeviceMemoryPropertiesCommand       = 12,
    kResizeWindowCommand2                   = 13,
    kSetOpaqueAddressCommand                = 14,
    kSetRayTracingShaderGroupHandlesCommand = 15
};

enum CompressionType : uint32_t
{
    kNone = 0,
    kLz4  = 1,
    kZlib = 2,
    kZstd = 3
};

enum FileOption : uint32_t
{
    kUnknownFileOption = 0,
    kCompressionType   = 1, // One of the CompressionType values defining the compression algorithm used with parameter
                            // encoding. Default = CompressionType::kNone.
};

enum PointerAttributes : uint32_t
{
    kIsNull         = 0x0001, // The pointer was null, so the address and data were not encoded.

    // Type of data
    kIsSingle       = 0x0002, // Pointer to a single value.
    kIsArray        = 0x0004, // Pointer to an array of values (can be combined with kIsString or kIsStruct).
    kIsArray2D      = 0x0100, // Pointer to an array of pointers or arrays.

    // Type modifiers for pointers to aggregate data types
    kIsString       = 0x0008, // Pointer to a UTF-8 string.
    kIsWString      = 0x0010, // Pointer to a UTF-16 string.
    kIsStruct       = 0x0020, // Pointer to a struct.

    // What was encoded
    kHasAddress     = 0x0040, // The address of the pointer was encoded (always comes before data).
    kHasData        = 0x0080, // The data pointed to was encoded.
};

enum ResizeWindowPreTransform : uint32_t
{
    kPreTransform0   = 0,
    kPreTransform90  = 1,
    kPreTransform180 = 2,
    kPreTransform270 = 3
};
// clang-format on

struct EnabledOptions
{
    CompressionType compression_type{ CompressionType::kNone };
};

#pragma pack(push)
#pragma pack(4)

struct FileOptionPair
{
    FileOption key;
    uint32_t   value;
};

struct FileHeader
{
    uint32_t fourcc;
    uint32_t major_version; // File format major version.
    uint32_t minor_version; // File format minor version.
    uint32_t num_options;
};

struct BlockHeader
{
    uint64_t  size;
    BlockType type;
};

struct Marker
{
    BlockHeader header;
    MarkerType  marker_type;
    uint64_t    frame_number;
};

struct FunctionCallHeader
{
    BlockHeader      block_header;
    ApiCallId        api_call_id;
    format::ThreadId thread_id;
};

struct CompressedFunctionCallHeader
{
    BlockHeader      block_header;
    ApiCallId        api_call_id;
    format::ThreadId thread_id;
    uint64_t         uncompressed_size;
};

struct MethodCallHeader
{
    BlockHeader      block_header;
    ApiCallId        api_call_id;
    uint64_t         object_id;
    format::ThreadId thread_id;
};

struct AnnotationHeader
{
    BlockHeader    block_header;
    AnnotationType annotation_type;
    uint32_t       label_length;
    uint32_t       data_length;
};

// Metadata block headers and data types.
struct MetaDataHeader
{
    BlockHeader  block_header;
    MetaDataType meta_data_type;
};

struct FillMemoryCommandHeader
{
    MetaDataHeader meta_header;
    format::ThreadId
        thread_id; // NOTE: This is currently the ID of the thread that processed the dirty pages and wrote them to
                   // the file, which may not be the thread that originally modified the memory pages.
    HandleId memory_id;
    uint64_t memory_offset; // Offset from the start of the mapped pointer, not the start of the memory object.
    uint64_t memory_size;   // Uncompressed size of the data encoded after the header.
};

struct DisplayMessageCommandHeader
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    // NOTE: Message size is determined by subtracting the sizeof(MetaDataType) + sizeof(ThreadId) from
    // BlockHeader::size.  This computed size is the length of the ASCII message string, not including the null
    // terminator.
};

// Not a header because this command does not include a variable length data payload.
// All of the command data is present in the struct.
struct ResizeWindowCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    HandleId         surface_id;
    uint32_t         width;
    uint32_t         height;
};

// Not a header because this command does not include a variable length data payload.
// All of the command data is present in the struct.
struct ResizeWindowCommand2
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    HandleId         surface_id;
    uint32_t         width;
    uint32_t         height;
    uint32_t         pre_transform;
};

struct CreateHardwareBufferCommandHeader
{
    MetaDataHeader meta_header;
    ThreadId       thread_id;
    HandleId       memory_id; // Globally unique ID assigned to the buffer for tracking memory modifications.
    uint64_t       buffer_id; // Address of the buffer object.
    uint32_t       format;
    uint32_t       width;
    uint32_t       height;
    uint32_t       stride; // Size of a row in pixels.
    uint32_t       usage;
    uint32_t       layers;
    uint32_t       planes; // When additional multi-plane data is available, header is followed by 'planes' count
                           // HardwareBufferLayerInfo records.  When unavailable, 'planes' is zero.
};

struct HardwareBufferPlaneInfo
{
    uint64_t offset;       // Offset from the start of the memory allocation in bytes.
    uint32_t pixel_stride; // Bytes between pixels.
    uint32_t row_pitch;    // Size of a row in bytes.
};

// Not a header because this command does not include a variable length data payload.
// All of the command data is present in the struct.
struct DestroyHardwareBufferCommand
{
    MetaDataHeader meta_header;
    ThreadId       thread_id;
    uint64_t       buffer_id;
};

struct SetSwapchainImageStateCommandHeader
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    format::HandleId swapchain_id;
    uint32_t         last_presented_image;
    uint32_t         image_info_count;
};

struct SwapchainImageStateInfo
{
    format::HandleId image_id;
    uint32_t         image_index;
    uint32_t         image_layout;
    uint32_t         acquired;
    uint32_t         acquire_device_mask;
    format::HandleId acquire_semaphore_id;
    format::HandleId acquire_fence_id;
    format::HandleId last_presented_queue_id;
};

struct BeginResourceInitCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    uint64_t         max_resource_size; // Size of largest resource in upload data set.
    uint64_t         max_copy_size;     // Size of largest resource requiring a staging copy at capture.
};

struct EndResourceInitCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
};

struct InitBufferCommandHeader
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    format::HandleId buffer_id;
    uint64_t         data_size;
};

struct InitImageCommandHeader
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    format::HandleId image_id;
    uint64_t         data_size;
    uint32_t         aspect;
    uint32_t         layout;
    uint32_t         level_count;
};

struct SetDeviceMemoryPropertiesCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId physical_device_id;
    uint32_t         memory_type_count;
    uint32_t         memory_heap_count;
};

struct DeviceMemoryType
{
    uint32_t property_flags;
    uint32_t heap_index;
};

struct DeviceMemoryHeap
{
    uint64_t size;
    uint32_t flags;
};

struct SetDevicePropertiesCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId physical_device_id;
    uint32_t         api_version;
    uint32_t         driver_version;
    uint32_t         vendor_id;
    uint32_t         device_id;
    uint32_t         device_type;
    uint8_t          pipeline_cache_uuid[kUuidSize];
    uint32_t         device_name_len;
};

struct SetOpaqueAddressCommand
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    format::HandleId object_id;
    uint64_t         address;
};

struct SetRayTracingShaderGroupHandlesCommandHeader
{
    MetaDataHeader   meta_header;
    format::ThreadId thread_id;
    format::HandleId device_id;
    format::HandleId pipeline_id;
    size_t           data_size;
};

#pragma pack(pop)

GFXRECON_END_NAMESPACE(format)
GFXRECON_END_NAMESPACE(gfxrecon)

#endif // GFXRECON_FORMAT_FORMAT_H
