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https://github.com/outbackdingo/UltraGrid.git
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4fe65769f0
Mainly depth is included in Y_ and CBCR_LIMIT - the used denominator 255.0 matched only 8 bits. Add (substract) epsilon 0.5 when converting the to integer to round the value correctly.
110 lines
4.0 KiB
C++
110 lines
4.0 KiB
C++
#include <cstring> // for strcmp
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#include <cmath> // for abs
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#include <list>
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#include <sstream>
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#include <string> // for allocator, basic_string, operator+, string
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#include "color.h"
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#include "types.h"
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#include "utils/string.h"
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#include "unit_common.h"
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#include "video.h"
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#include "video_frame.h"
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extern "C" {
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int misc_test_color_coeff_range();
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int misc_test_replace_all();
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int misc_test_video_desc_io_op_symmetry();
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}
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using namespace std;
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/**
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* check that scaled coefficient for minimal values match approximately minimal
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* value of nominal range (== there is not significant shift)
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*/
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int
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misc_test_color_coeff_range()
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{
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const int depths[] = { 8, 10, 12, 16 };
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for (unsigned i = 0; i < sizeof depths / sizeof depths[0]; ++i) {
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const int d = depths[i];
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const int d_max = (1 << d) - 1;
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const int max_diff = 1 << (d - 8);
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// Y
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ASSERT_LE_MESSAGE(
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"min Y diverges from nominal range min", max_diff,
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abs((RGB_TO_Y_709_SCALED(d, 0, 0, 0) >> COMP_BASE) +
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LIMIT_LO(d)) -
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LIMIT_LO(d));
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ASSERT_LE_MESSAGE(
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"max Y diverges from nominal range max", max_diff,
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abs((RGB_TO_Y_709_SCALED(d, d_max, d_max, d_max) >>
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COMP_BASE) +
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LIMIT_LO(d) - LIMIT_HI_Y(d)));
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// Cb
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ASSERT_LE_MESSAGE(
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"min Cb diverges from nominal range min", max_diff,
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abs((RGB_TO_CB_709_SCALED(d, d_max, d_max, 0) >>
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COMP_BASE) +
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(1 << (d - 1)) - LIMIT_LO(d)));
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ASSERT_LE_MESSAGE(
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"max Cb diverges from nominal range max", max_diff,
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abs((RGB_TO_CB_709_SCALED(d, 0, 0, d_max) >> COMP_BASE) +
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(1 << (d - 1)) - LIMIT_HI_CBCR(d)));
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// Cr
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ASSERT_LE_MESSAGE(
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"min Cr diverges from nominal range min", max_diff,
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abs((RGB_TO_CR_709_SCALED(d, 0, d_max, d_max) >>
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COMP_BASE) +
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(1 << (d - 1)) - LIMIT_LO(d)));
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ASSERT_LE_MESSAGE(
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"max Cr diverges from nominal range max", max_diff,
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abs((RGB_TO_CR_709_SCALED(d, d_max, 0, 0) >> COMP_BASE) +
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(1 << (d - 1)) - LIMIT_HI_CBCR(d)));
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}
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return 0;
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}
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#ifdef __clang__
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#pragma clang diagnostic ignored "-Wstring-concatenation"
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#endif
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int misc_test_replace_all()
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{
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char test[][20] = { DELDEL DELDEL DELDEL, DELDEL DELDEL, "XYZX" DELDEL, "XXXyX" };
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const char *repl_from[] = { DELDEL , DELDEL, "X", "X" };
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const char *repl_to[] = { ":" , ESCAPED_COLON, "x", "" };
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const char *res[] = { ":::" , ESCAPED_COLON ESCAPED_COLON, "xYZx" DELDEL, "y" };
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for (unsigned i = 0; i < sizeof test / sizeof test[0]; ++i) {
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replace_all(test[i], repl_from[i], repl_to[i]);
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ASSERT(strcmp(test[i], res[i]) == 0);
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}
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return 0;
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}
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int misc_test_video_desc_io_op_symmetry()
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{
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const std::list<video_desc> test_desc = {
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{1920, 1080, DXT5, 60, PROGRESSIVE, 4},
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{640, 480, H264, 15, PROGRESSIVE, 1}};
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for (const auto & i : test_desc) {
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video_desc tmp;
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ostringstream oss;
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oss << i;
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istringstream iss(oss.str());
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iss >> tmp;
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// Check
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ostringstream oss2;
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oss2 << tmp;
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string err_elem = oss.str() + " vs " + oss2.str();
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ASSERT_MESSAGE(err_elem, video_desc_eq(tmp, i));
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ASSERT_EQUAL_MESSAGE(err_elem, tmp, i);
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}
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return 0;
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}
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