//
// Copyright 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//

// driver_utils.h : provides more information about current driver.

#include <algorithm>

#include "libANGLE/renderer/driver_utils.h"

#include "common/platform.h"
#include "common/system_utils.h"

#if defined(ANGLE_PLATFORM_ANDROID)
#    include <sys/system_properties.h>
#endif

#if defined(ANGLE_PLATFORM_LINUX)
#    include <sys/utsname.h>
#endif

#if defined(ANGLE_PLATFORM_WINDOWS)
#    include <versionhelpers.h>
#endif

namespace rx
{
// Intel
// Referenced from https://cgit.freedesktop.org/vaapi/intel-driver/tree/src/i965_pciids.h
namespace
{
// gen6
const uint32_t SandyBridge[] = {0x0102, 0x0106, 0x010A, 0x0112, 0x0122, 0x0116, 0x0126};

// gen7
const uint32_t IvyBridge[] = {0x0152, 0x0156, 0x015A, 0x0162, 0x0166, 0x016A};

const uint32_t Haswell[] = {
    0x0402, 0x0406, 0x040A, 0x040B, 0x040E, 0x0C02, 0x0C06, 0x0C0A, 0x0C0B, 0x0C0E,
    0x0A02, 0x0A06, 0x0A0A, 0x0A0B, 0x0A0E, 0x0D02, 0x0D06, 0x0D0A, 0x0D0B, 0x0D0E,  // hsw_gt1
    0x0412, 0x0416, 0x041A, 0x041B, 0x041E, 0x0C12, 0x0C16, 0x0C1A, 0x0C1B, 0x0C1E,
    0x0A12, 0x0A16, 0x0A1A, 0x0A1B, 0x0A1E, 0x0D12, 0x0D16, 0x0D1A, 0x0D1B, 0x0D1E,  // hsw_gt2
    0x0422, 0x0426, 0x042A, 0x042B, 0x042E, 0x0C22, 0x0C26, 0x0C2A, 0x0C2B, 0x0C2E,
    0x0A22, 0x0A26, 0x0A2A, 0x0A2B, 0x0A2E, 0x0D22, 0x0D26, 0x0D2A, 0x0D2B, 0x0D2E  // hsw_gt3
};

// gen8
const uint32_t Broadwell[] = {0x1602, 0x1606, 0x160A, 0x160B, 0x160D, 0x160E,
                              0x1612, 0x1616, 0x161A, 0x161B, 0x161D, 0x161E,
                              0x1622, 0x1626, 0x162A, 0x162B, 0x162D, 0x162E};

const uint32_t CherryView[] = {0x22B0, 0x22B1, 0x22B2, 0x22B3};

// gen9
const uint32_t Skylake[] = {0x1902, 0x1906, 0x190A, 0x190B, 0x190E, 0x1912, 0x1913, 0x1915, 0x1916,
                            0x1917, 0x191A, 0x191B, 0x191D, 0x191E, 0x1921, 0x1923, 0x1926, 0x1927,
                            0x192A, 0x192B, 0x192D, 0x1932, 0x193A, 0x193B, 0x193D};

const uint32_t Broxton[] = {0x0A84, 0x1A84, 0x1A85, 0x5A84, 0x5A85};

// gen9p5
const uint32_t Kabylake[] = {0x5916, 0x5913, 0x5906, 0x5926, 0x5921, 0x5915, 0x590E,
                             0x591E, 0x5912, 0x5917, 0x5902, 0x591B, 0x593B, 0x590B,
                             0x591A, 0x590A, 0x591D, 0x5908, 0x5923, 0x5927};

}  // anonymous namespace

IntelDriverVersion::IntelDriverVersion(uint16_t lastPart) : mVersionPart(lastPart) {}

bool IntelDriverVersion::operator==(const IntelDriverVersion &version)
{
    return mVersionPart == version.mVersionPart;
}

bool IntelDriverVersion::operator!=(const IntelDriverVersion &version)
{
    return !(*this == version);
}

bool IntelDriverVersion::operator<(const IntelDriverVersion &version)
{
    // See http://www.intel.com/content/www/us/en/support/graphics-drivers/000005654.html to
    // understand the Intel graphics driver version number on Windows.
    // mVersionPart1 changes with OS version. mVersionPart2 changes with DirectX version.
    // mVersionPart3 stands for release year. mVersionPart4 is driver specific unique version
    // number.
    // For example: Intel driver version '20.19.15.4539'
    //              20   -> windows 10 driver
    //              19   -> DirectX 12 first version(12.0) supported
    //              15   -> Driver released in 2015
    //              4539 -> Driver specific unique version number
    // For linux, Intel graphics driver version is the mesa version. The version number has three
    // parts: major revision, minor revision, release number. So, for linux, we need to compare
    // three parts.
    // Currently, it's only used in windows. So, checking the last part is enough. Once it's needed
    // in other platforms, it's easy to be extended.
    return mVersionPart < version.mVersionPart;
}

bool IntelDriverVersion::operator>=(const IntelDriverVersion &version)
{
    return !(*this < version);
}

bool IsSandyBridge(uint32_t DeviceId)
{
    return std::find(std::begin(SandyBridge), std::end(SandyBridge), DeviceId) !=
           std::end(SandyBridge);
}

bool IsIvyBridge(uint32_t DeviceId)
{
    return std::find(std::begin(IvyBridge), std::end(IvyBridge), DeviceId) != std::end(IvyBridge);
}

bool IsHaswell(uint32_t DeviceId)
{
    return std::find(std::begin(Haswell), std::end(Haswell), DeviceId) != std::end(Haswell);
}

bool IsBroadwell(uint32_t DeviceId)
{
    return std::find(std::begin(Broadwell), std::end(Broadwell), DeviceId) != std::end(Broadwell);
}

bool IsCherryView(uint32_t DeviceId)
{
    return std::find(std::begin(CherryView), std::end(CherryView), DeviceId) !=
           std::end(CherryView);
}

bool IsSkylake(uint32_t DeviceId)
{
    return std::find(std::begin(Skylake), std::end(Skylake), DeviceId) != std::end(Skylake);
}

bool IsBroxton(uint32_t DeviceId)
{
    return std::find(std::begin(Broxton), std::end(Broxton), DeviceId) != std::end(Broxton);
}

bool IsKabylake(uint32_t DeviceId)
{
    return std::find(std::begin(Kabylake), std::end(Kabylake), DeviceId) != std::end(Kabylake);
}

bool Is9thGenIntel(uint32_t DeviceId)
{
    return IsSkylake(DeviceId) || IsBroxton(DeviceId) || IsKabylake(DeviceId);
}

const char *GetVendorString(uint32_t vendorId)
{
    switch (vendorId)
    {
        case VENDOR_ID_AMD:
            return "AMD";
        case VENDOR_ID_ARM:
            return "ARM";
        case VENDOR_ID_APPLE:
            return "Apple";
        case VENDOR_ID_BROADCOM:
            return "Broadcom";
        case VENDOR_ID_GOOGLE:
            return "Google";
        case VENDOR_ID_INTEL:
            return "Intel";
        case VENDOR_ID_MESA:
            return "Mesa";
        case VENDOR_ID_NVIDIA:
            return "NVIDIA";
        case VENDOR_ID_POWERVR:
            return "Imagination Technologies";
        case VENDOR_ID_QUALCOMM:
            return "Qualcomm";
        case 0xba5eba11:  // Mock vendor ID used for tests.
            return "Test";
        case 0:
            return "NULL";
        default:
            // TODO(jmadill): More vendor IDs.
            UNIMPLEMENTED();
            return "Unknown";
    }
}

int GetAndroidSDKVersion()
{
#if defined(ANGLE_PLATFORM_ANDROID)
    char apiVersion[PROP_VALUE_MAX];
    int length = __system_property_get("ro.build.version.sdk", apiVersion);
    if (length == 0)
    {
        return 0;
    }
    return atoi(apiVersion);
#else
    return 0;
#endif
}

OSVersion::OSVersion() {}
OSVersion::OSVersion(int major, int minor, int patch)
    : majorVersion(major), minorVersion(minor), patchVersion(patch)
{}

bool operator==(const OSVersion &a, const OSVersion &b)
{
    return std::tie(a.majorVersion, a.minorVersion, a.patchVersion) ==
           std::tie(b.majorVersion, b.minorVersion, b.patchVersion);
}
bool operator!=(const OSVersion &a, const OSVersion &b)
{
    return std::tie(a.majorVersion, a.minorVersion, a.patchVersion) !=
           std::tie(b.majorVersion, b.minorVersion, b.patchVersion);
}
bool operator<(const OSVersion &a, const OSVersion &b)
{
    return std::tie(a.majorVersion, a.minorVersion, a.patchVersion) <
           std::tie(b.majorVersion, b.minorVersion, b.patchVersion);
}
bool operator>=(const OSVersion &a, const OSVersion &b)
{
    return std::tie(a.majorVersion, a.minorVersion, a.patchVersion) >=
           std::tie(b.majorVersion, b.minorVersion, b.patchVersion);
}

#if !defined(ANGLE_PLATFORM_APPLE)
OSVersion GetMacOSVersion()
{
    // Return a default version
    return OSVersion(0, 0, 0);
}
#endif

#if defined(ANGLE_PLATFORM_LINUX)
bool ParseLinuxOSVersion(const char *version, int *major, int *minor, int *patch)
{
    errno = 0;  // reset global error flag.
    char *next;
    *major = static_cast<int>(strtol(version, &next, 10));
    if (next == nullptr || *next != '.' || errno != 0)
    {
        return false;
    }

    *minor = static_cast<int>(strtol(next + 1, &next, 10));
    if (next == nullptr || *next != '.' || errno != 0)
    {
        return false;
    }

    *patch = static_cast<int>(strtol(next + 1, &next, 10));
    if (errno != 0)
    {
        return false;
    }

    return true;
}
#endif

OSVersion GetLinuxOSVersion()
{
#if defined(ANGLE_PLATFORM_LINUX)
    struct utsname uname_info;
    if (uname(&uname_info) != 0)
    {
        return OSVersion(0, 0, 0);
    }

    int majorVersion = 0, minorVersion = 0, patchVersion = 0;
    if (ParseLinuxOSVersion(uname_info.release, &majorVersion, &minorVersion, &patchVersion))
    {
        return OSVersion(majorVersion, minorVersion, patchVersion);
    }
#endif

    return OSVersion(0, 0, 0);
}

// There are multiple environment variables that may or may not be set during Wayland
// sessions, including WAYLAND_DISPLAY, XDG_SESSION_TYPE, and DESKTOP_SESSION
bool IsWayland()
{
    static bool checked   = false;
    static bool isWayland = false;
    if (!checked)
    {
        if (IsLinux())
        {
            if (!angle::GetEnvironmentVar("WAYLAND_DISPLAY").empty())
            {
                isWayland = true;
            }
            else if (angle::GetEnvironmentVar("XDG_SESSION_TYPE") == "wayland")
            {
                isWayland = true;
            }
            else if (angle::GetEnvironmentVar("DESKTOP_SESSION").find("wayland") !=
                     std::string::npos)
            {
                isWayland = true;
            }
        }
        checked = true;
    }
    return isWayland;
}

bool IsWin10OrGreater()
{
#if defined(ANGLE_ENABLE_WINDOWS_UWP)
    return true;
#elif defined(ANGLE_PLATFORM_WINDOWS)
    return IsWindows10OrGreater();
#else
    return false;
#endif
}

}  // namespace rx
