Merge "VTS: Validate that getDisplayIdentificationData returns EDID" into sc-dev

#define LOG_TAG "graphics_composer_hidl_hal_test@2.3"

#include <algorithm>

#include <numeric>

#include <android-base/logging.h>

#include <android-base/properties.h>

TEST_P(GraphicsComposerHidlTest, GetDisplayIdentificationData) {

    uint8_t port0;

    std::vector<uint8_t> data0;

    if (mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port0, &data0)) {

    if (!mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port0, &data0)) {

        return;

    }

    ASSERT_FALSE(data0.empty());

    constexpr size_t kEdidBlockSize = 128;

    ASSERT_TRUE(data0.size() % kEdidBlockSize == 0)

            << "EDID blob length is not a multiple of " << kEdidBlockSize;

    const uint8_t kEdidHeader[] = {0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00};

    ASSERT_TRUE(std::equal(std::begin(kEdidHeader), std::end(kEdidHeader), data0.begin()))

            << "EDID blob doesn't start with the fixed EDID header";

    ASSERT_EQ(0, std::accumulate(data0.begin(), data0.begin() + kEdidBlockSize,

                                 static_cast<uint8_t>(0)))

            << "EDID base block doesn't checksum";

    uint8_t port1;

    std::vector<uint8_t> data1;

    ASSERT_TRUE(mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port1, &data1));

                std::equal(data0.begin(), data0.end(), data1.begin()))

            << "data is not stable";

}

}

/**

 * Test IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA.