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ColorTransform functions added to repo

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This commit is contained in:
johan
2013-08-05 23:49:17 +02:00
parent cbbb1d740b
commit 491d6ff608
5 changed files with 257 additions and 5 deletions
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14
test/CMakeLists.txt
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@@ -1,3 +1,5 @@
# Needed for testing non-public components
include_directories(../libsrc)
# Add the simple test executable 'TestSpi'
add_executable(TestSpi
@@ -25,15 +27,19 @@ add_executable(TestRgbImage
target_link_libraries(TestRgbImage
hyperion-utils)
add_executable(TestColorTransform
TestColorTransform.cpp)
target_link_libraries(TestColorTransform
hyperion)
# Find the libPNG
find_package(PNG REQUIRED QUIET)
# Add additional includes dirs
include_directories(${PNG_INCLUDE_DIR})
#if(PNG_FOUND)
# Add additional includes dirs
include_directories(${PNG_INCLUDE_DIR})
add_executable(TestHyperionPng
add_executable(TestHyperionPng
TestHyperionPng.cpp)
target_link_libraries(TestHyperionPng

93
test/TestColorTransform.cpp Normal file
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@@ -0,0 +1,93 @@
#include <iostream>
#include <cmath>
#include <hyperion/ColorTransform.h>
int main()
{
{
std::cout << "Testing linear transform" << std::endl;
ColorTransform t;
for (int i = 0; i < 256; ++i)
{
uint8_t input = i;
uint8_t output = t.transform(input);
uint8_t expected = input;
if (output != expected)
{
std::cerr << "ERROR: input (" << (int)input << ") => output (" << (int)output << ") : expected (" << (int) expected << ")" << std::endl;
return 1;
}
else
{
std::cerr << "OK: input (" << (int)input << ") => output (" << (int)output << ")" << std::endl;
}
}
}
{
std::cout << "Testing threshold" << std::endl;
ColorTransform t(.10, 1.0, 0.0, 1.0);
for (int i = 0; i < 256; ++i)
{
uint8_t input = i;
uint8_t output = t.transform(input);
uint8_t expected = ((i/255.0) < t.getThreshold() ? 0 : output);
if (output != expected)
{
std::cerr << "ERROR: input (" << (int)input << ") => output (" << (int)output << ") : expected (" << (int) expected << ")" << std::endl;
return 1;
}
else
{
std::cerr << "OK: input (" << (int)input << ") => output (" << (int)output << ")" << std::endl;
}
}
}
{
std::cout << "Testing blacklevel and whitelevel" << std::endl;
ColorTransform t(0, 1.0, 0.2, 0.8);
for (int i = 0; i < 256; ++i)
{
uint8_t input = i;
uint8_t output = t.transform(input);
uint8_t expected = (uint8_t)(input * (t.getWhitelevel()-t.getBlacklevel()) + 255 * t.getBlacklevel());
if (output != expected)
{
std::cerr << "ERROR: input (" << (int)input << ") => output (" << (int)output << ") : expected (" << (int) expected << ")" << std::endl;
return 1;
}
else
{
std::cerr << "OK: input (" << (int)input << ") => output (" << (int)output << ")" << std::endl;
}
}
}
{
std::cout << "Testing gamma" << std::endl;
ColorTransform t(0, 2.0, 0.0, 1.0);
for (int i = 0; i < 256; ++i)
{
uint8_t input = i;
uint8_t output = t.transform(input);
uint8_t expected = (uint8_t)(255 * std::pow(i / 255.0, 2));
if (output != expected)
{
std::cerr << "ERROR: input (" << (int)input << ") => output (" << (int)output << ") : expected (" << (int) expected << ")" << std::endl;
return 1;
}
else
{
std::cerr << "OK: input (" << (int)input << ") => output (" << (int)output << ")" << std::endl;
}
}
}
return 0;
}