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VTS: Validate that getDisplayIdentificationData returns EDID

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Accroding to the documentation getDisplayIdentificationData
"data is the EDID 1.3 blob identifying the display".

This CL runs a basic validation that the returned data is
an EDID.

Test: atest VtsHalGraphicsComposerV2_3TargetTest
Bug: 191851265
Change-Id: I7604f3dc68095612d79bb04243918d6348de6c89
This commit is contained in:
Marin Shalamanov
2021-06-23 14:12:37 +02:00
parent 2f87ec175f
commit d65b354dee
1 changed files with 24 additions and 8 deletions
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32
graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
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@@ -17,6 +17,7 @@
#define LOG_TAG "graphics_composer_hidl_hal_test@2.3"
#include <algorithm>
#include <numeric>
#include <android-base/logging.h>
#include <android-base/properties.h>
@@ -155,16 +156,31 @@ class GraphicsComposerHidlCommandTest : public GraphicsComposerHidlTest {
TEST_P(GraphicsComposerHidlTest, GetDisplayIdentificationData) {
uint8_t port0;
std::vector<uint8_t> data0;
if (mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port0, &data0)) {
uint8_t port1;
std::vector<uint8_t> data1;
ASSERT_TRUE(mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port1, &data1));
ASSERT_EQ(port0, port1) << "ports are not stable";
ASSERT_TRUE(data0.size() == data1.size() &&
std::equal(data0.begin(), data0.end(), data1.begin()))
<< "data is not stable";
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));
ASSERT_EQ(port0, port1) << "ports are not stable";
ASSERT_TRUE(data0.size() == data1.size() &&
std::equal(data0.begin(), data0.end(), data1.begin()))
<< "data is not stable";
}
/**