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Aegisub/tests/tests/vfr.cpp
arch1t3cht 245cc68afa Fix FrameAtTime computation for CFR 
The new formula is just the inverse function of the CFR part of
the TimeAtFrame function.

To see how the previous implementation was faulty, see either the added
tests, or
- In Aegisub, open a dummy video with a frame rate of 23.976
- Make a subtitle event with start time 04:44.41
- Double-click the line to (supposedly) seek to its first frame
- This will seek one frame earlier than it should, and the event will
  not be displayed on the resulting frame.
2022-11-02 02:19:38 +01:00

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// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
#include <libaegisub/fs.h>
#include <libaegisub/vfr.h>
#include <climits>
#include <fstream>
#include <iterator>
#include <main.h>
#include <util.h>
using namespace agi::vfr;
using namespace util;
#define EXPECT_RANGE(low, high, test) \
EXPECT_LE(low, test); \
EXPECT_GE(high, test)
TEST(lagi_vfr, constructors_good) {
EXPECT_NO_THROW(Framerate(1.));
EXPECT_NO_THROW(Framerate(Framerate(1.)));
EXPECT_NO_THROW(Framerate({ 0, 10 }));
EXPECT_NO_THROW(Framerate("data/vfr/in/v1_start_equals_end.txt"));
EXPECT_NO_THROW(Framerate("data/vfr/in/v1_whitespace.txt"));
EXPECT_NO_THROW(Framerate("data/vfr/in/v1_assume_int.txt"));
EXPECT_NO_THROW(Framerate("data/vfr/in/v1_out_of_order.txt"));
}
TEST(lagi_vfr, constructors_bad_cfr) {
EXPECT_THROW(Framerate(-1.), InvalidFramerate);
EXPECT_THROW(Framerate(1000.1), InvalidFramerate);
}
TEST(lagi_vfr, constructors_bad_timecodes) {
EXPECT_THROW(Framerate(std::initializer_list<int>{}), InvalidFramerate);
EXPECT_THROW(Framerate({0}), InvalidFramerate);
EXPECT_THROW(Framerate({10, 0}), InvalidFramerate);
EXPECT_THROW(Framerate({0, 0}), InvalidFramerate);
}
TEST(lagi_vfr, constructors_bad_v1) {
EXPECT_THROW(Framerate("data/vfr/in/v1_bad_seperators.txt"), MalformedLine);
EXPECT_THROW(Framerate("data/vfr/in/v1_too_few_parts.txt"), MalformedLine);
EXPECT_THROW(Framerate("data/vfr/in/v1_too_many_parts.txt"), MalformedLine);
EXPECT_THROW(Framerate("data/vfr/in/v1_float_frame_number.txt"), MalformedLine);
EXPECT_THROW(Framerate("data/vfr/in/v1_start_end_overlap.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_fully_contained.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_assume_over_1000.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_override_over_1000.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_override_zero.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_negative_start_of_range.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v1_end_less_than_start.txt"), InvalidFramerate);
}
TEST(lagi_vfr, constructors_bad_v2) {
EXPECT_THROW(Framerate("data/vfr/in/v2_empty.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/v2_out_of_order.txt"), InvalidFramerate);
EXPECT_THROW(Framerate("data/vfr/in/empty.txt"), UnknownFormat);
}
TEST(lagi_vfr, cfr_frame_at_time_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_EQ(0, fps.FrameAtTime(0));
EXPECT_EQ(0, fps.FrameAtTime(999));
EXPECT_EQ(1, fps.FrameAtTime(1000));
EXPECT_EQ(1, fps.FrameAtTime(1999));
EXPECT_EQ(100, fps.FrameAtTime(100000));
EXPECT_EQ(-1, fps.FrameAtTime(-1));
EXPECT_EQ(-1, fps.FrameAtTime(-1000));
EXPECT_EQ(-2, fps.FrameAtTime(-1001));
}
TEST(lagi_vfr, cfr_frame_at_time_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_EQ(0, fps.FrameAtTime(0, START));
EXPECT_EQ(1, fps.FrameAtTime(1, START));
EXPECT_EQ(1, fps.FrameAtTime(1000, START));
EXPECT_EQ(2, fps.FrameAtTime(1001, START));
EXPECT_EQ(100, fps.FrameAtTime(100000, START));
EXPECT_EQ(0, fps.FrameAtTime(-1, START));
EXPECT_EQ(0, fps.FrameAtTime(-999, START));
EXPECT_EQ(-1, fps.FrameAtTime(-1000, START));
EXPECT_EQ(-1, fps.FrameAtTime(-1999, START));
}
TEST(lagi_vfr, cfr_frame_at_time_end) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_EQ(-1, fps.FrameAtTime(0, END));
EXPECT_EQ(0, fps.FrameAtTime(1, END));
EXPECT_EQ(0, fps.FrameAtTime(1000, END));
EXPECT_EQ(1, fps.FrameAtTime(1001, END));
EXPECT_EQ(99, fps.FrameAtTime(100000, END));
EXPECT_EQ(-1, fps.FrameAtTime(-1, END));
EXPECT_EQ(-1, fps.FrameAtTime(-999, END));
EXPECT_EQ(-2, fps.FrameAtTime(-1000, END));
EXPECT_EQ(-2, fps.FrameAtTime(-1999, END));
}
TEST(lagi_vfr, cfr_time_at_frame_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_EQ( 0, fps.TimeAtFrame(0));
EXPECT_EQ( 1000, fps.TimeAtFrame(1));
EXPECT_EQ( 2000, fps.TimeAtFrame(2));
EXPECT_EQ(-1000, fps.TimeAtFrame(-1));
}
TEST(lagi_vfr, cfr_time_at_frame_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_RANGE( -999, 0, fps.TimeAtFrame( 0, START));
EXPECT_RANGE( 1, 1000, fps.TimeAtFrame( 1, START));
EXPECT_RANGE( 1001, 2000, fps.TimeAtFrame( 2, START));
EXPECT_RANGE(-1999, -1000, fps.TimeAtFrame(-1, START));
}
TEST(lagi_vfr, cfr_time_at_frame_end) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
EXPECT_RANGE( 1, 1000, fps.TimeAtFrame( 0, END));
EXPECT_RANGE(1001, 2000, fps.TimeAtFrame( 1, END));
EXPECT_RANGE(2001, 3000, fps.TimeAtFrame( 2, END));
EXPECT_RANGE(-999, 0, fps.TimeAtFrame(-1, END));
}
TEST(lagi_vfr, cfr_round_trip_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i)));
}
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
int frames[] = {-100, -10, -1, 0, 1, 10, 100, 6820};
for (int i : frames) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i)));
}
}
TEST(lagi_vfr, cfr_round_trip_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, START), START));
}
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
int frames[] = {-100, -10, -1, 0, 1, 10, 100, 6820};
for (int i : frames) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, START), START));
}
}
TEST(lagi_vfr, cfr_round_trip_end) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, END), END));
}
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
int frames[] = {-100, -10, -1, 0, 1, 10, 100, 6820};
for (int i : frames) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, END), END));
}
}
TEST(lagi_vfr, vfr_round_trip_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i)));
}
}
TEST(lagi_vfr, vfr_round_trip_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, START), START));
}
}
TEST(lagi_vfr, vfr_round_trip_end) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
for (int i = -10; i < 11; i++) {
EXPECT_EQ(i, fps.FrameAtTime(fps.TimeAtFrame(i, END), END));
}
}
TEST(lagi_vfr, vfr_time_at_frame_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001 }));
EXPECT_EQ(0, fps.TimeAtFrame(0));
EXPECT_EQ(1000, fps.TimeAtFrame(1));
EXPECT_EQ(1500, fps.TimeAtFrame(2));
EXPECT_EQ(2000, fps.TimeAtFrame(3));
EXPECT_EQ(2001, fps.TimeAtFrame(4));
}
TEST(lagi_vfr, vfr_time_at_frame_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
EXPECT_GE(0, fps.TimeAtFrame(0, START));
EXPECT_RANGE(1, 1000, fps.TimeAtFrame(1, START));
EXPECT_RANGE(1001, 1500, fps.TimeAtFrame(2, START));
EXPECT_RANGE(1501, 2000, fps.TimeAtFrame(3, START));
EXPECT_EQ(2001, fps.TimeAtFrame(4, START));
EXPECT_EQ(2002, fps.TimeAtFrame(5, START));
EXPECT_LE(2003, fps.TimeAtFrame(6, START));
}
TEST(lagi_vfr, vfr_time_at_frame_end) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
EXPECT_RANGE(1, 1000, fps.TimeAtFrame(0, END));
EXPECT_RANGE(1001, 1500, fps.TimeAtFrame(1, END));
EXPECT_RANGE(1501, 2000, fps.TimeAtFrame(2, END));
EXPECT_EQ(2001, fps.TimeAtFrame(3, END));
EXPECT_EQ(2002, fps.TimeAtFrame(4, END));
EXPECT_EQ(2003, fps.TimeAtFrame(5, END));
EXPECT_LE(2004, fps.TimeAtFrame(6, END));
}
TEST(lagi_vfr, vfr_time_at_frame_outside_range) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 100, 200 }));
EXPECT_GT(0, fps.TimeAtFrame(-1));
EXPECT_EQ(0, fps.TimeAtFrame(0));
EXPECT_EQ(100, fps.TimeAtFrame(1));
EXPECT_EQ(200, fps.TimeAtFrame(2));
EXPECT_LT(200, fps.TimeAtFrame(3));
int prev = fps.TimeAtFrame(3);
for (int i = 4; i < 10; i++) {
EXPECT_LT(prev, fps.TimeAtFrame(i));
prev = fps.TimeAtFrame(i);
}
}
TEST(lagi_vfr, vfr_frame_at_time_exact) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
EXPECT_GT(0, fps.FrameAtTime(-1));
EXPECT_EQ(0, fps.FrameAtTime(0));
EXPECT_EQ(0, fps.FrameAtTime(999));
EXPECT_EQ(1, fps.FrameAtTime(1000));
EXPECT_EQ(1, fps.FrameAtTime(1499));
EXPECT_EQ(2, fps.FrameAtTime(1500));
EXPECT_EQ(2, fps.FrameAtTime(1999));
EXPECT_EQ(3, fps.FrameAtTime(2000));
EXPECT_EQ(4, fps.FrameAtTime(2001));
EXPECT_EQ(5, fps.FrameAtTime(2002));
EXPECT_EQ(6, fps.FrameAtTime(2003));
EXPECT_LE(6, fps.FrameAtTime(2004));
}
TEST(lagi_vfr, vfr_frame_at_time_start) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 1000, 1500, 2000, 2001, 2002, 2003 }));
EXPECT_GE(0, fps.FrameAtTime(-1, START));
EXPECT_EQ(0, fps.FrameAtTime(0, START));
EXPECT_EQ(1, fps.FrameAtTime(1, START));
EXPECT_EQ(1, fps.FrameAtTime(1000, START));
EXPECT_EQ(2, fps.FrameAtTime(1001, START));
EXPECT_EQ(2, fps.FrameAtTime(1500, START));
EXPECT_EQ(3, fps.FrameAtTime(1501, START));
EXPECT_EQ(3, fps.FrameAtTime(2000, START));
EXPECT_EQ(4, fps.FrameAtTime(2001, START));
EXPECT_EQ(5, fps.FrameAtTime(2002, START));
EXPECT_EQ(6, fps.FrameAtTime(2003, START));
EXPECT_LE(6, fps.FrameAtTime(2004, START));
}
bool validate_save(std::string const& goodFilename, std::string const& checkFilename, int v2Lines = -1, bool allowLonger = false) {
std::ifstream good(goodFilename.c_str());
std::ifstream check(checkFilename.c_str());
EXPECT_TRUE(good.good());
EXPECT_TRUE(check.good());
std::string good_header;
std::string check_header;
std::getline(good, good_header);
std::getline(check, check_header);
// istream_iterator rather than line_reader because we never write comments
// or empty lines in timecode files
std::istream_iterator<double> good_iter(good);
std::istream_iterator<double> check_iter(check);
std::istream_iterator<double> end;
int line = 0;
for (; good_iter != end; ++good_iter, ++check_iter, ++line) {
if (check_iter == end) return false;
if (v2Lines < 0 || line < v2Lines) {
if (*good_iter != *check_iter) return false;
}
}
// v1 timecodes with the end of a range past the end of the video are valid,
// and when saving those there will be too many timecodes in the v2 file
if (!allowLonger && check_iter != end) return false;
return true;
}
TEST(lagi_vfr, validate_save) {
EXPECT_TRUE(validate_save("data/vfr/in/validate_base.txt", "data/vfr/in/validate_base.txt"));
EXPECT_FALSE(validate_save("data/vfr/in/validate_base.txt", "data/vfr/in/validate_different.txt"));
EXPECT_FALSE(validate_save("data/vfr/in/validate_base.txt", "data/vfr/in/validate_shorter.txt"));
EXPECT_FALSE(validate_save("data/vfr/in/validate_base.txt", "data/vfr/in/validate_longer.txt"));
EXPECT_TRUE(validate_save("data/vfr/in/validate_base.txt", "data/vfr/in/validate_longer.txt", -1, true));
}
TEST(lagi_vfr, save_vfr_nolen) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 100, 200 }));
ASSERT_NO_THROW(fps.Save("data/vfr/out/v2_nolen.txt"));
EXPECT_TRUE(validate_save("data/vfr/in/v2_nolen.txt", "data/vfr/out/v2_nolen.txt"));
}
TEST(lagi_vfr, save_vfr_len) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 100, 200 }));
ASSERT_NO_THROW(fps.Save("data/vfr/out/v2_len_3_10.txt", 10));
EXPECT_TRUE(validate_save("data/vfr/in/v2_len_3_10.txt", "data/vfr/out/v2_len_3_10.txt", 3));
}
TEST(lagi_vfr, load_v2) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v2_1fps.txt"));
for (int i = 0; i < 30; i++) {
EXPECT_EQ(i * 1000, fps.TimeAtFrame(i));
}
}
TEST(lagi_vfr, load_v2_comments) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v2_comments.txt"));
for (int i = 0; i < 30; i++) {
EXPECT_EQ(i * 1000, fps.TimeAtFrame(i));
}
}
TEST(lagi_vfr, load_v2_number_in_comment) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v2_number_in_comment.txt"));
for (int i = 0; i < 30; i++) {
EXPECT_EQ(i * 1000, fps.TimeAtFrame(i));
}
}
TEST(lagi_vfr, load_v1_save_v2) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v1_mode5.txt"));
EXPECT_NO_THROW(fps.Save("data/vfr/out/v2_mode5.txt"));
EXPECT_TRUE(validate_save("data/vfr/in/v2_mode5.txt", "data/vfr/out/v2_mode5.txt", -1, true));
}
TEST(lagi_vfr, load_v1_save_v2_len) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v1_assume_30.txt"));
ASSERT_NO_THROW(fps.Save("data/vfr/out/v2_100_frames_30_fps.txt", 100));
EXPECT_TRUE(validate_save("data/vfr/in/v2_100_frames_30_fps.txt", "data/vfr/out/v2_100_frames_30_fps.txt"));
}
TEST(lagi_vfr, load_v1_save_v2_ovr) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate("data/vfr/in/v1_assume_30_with_override.txt"));
ASSERT_NO_THROW(fps.Save("data/vfr/out/v2_100_frames_30_with_override.txt", 100));
EXPECT_TRUE(validate_save("data/vfr/in/v2_100_frames_30_with_override.txt", "data/vfr/out/v2_100_frames_30_with_override.txt"));
}
TEST(lagi_vfr, nonzero_start_time) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 10, 20, 30, 40, 50 }));
EXPECT_EQ(0, fps.TimeAtFrame(0, EXACT));
EXPECT_EQ(10, fps.TimeAtFrame(1, EXACT));
EXPECT_EQ(20, fps.TimeAtFrame(2, EXACT));
EXPECT_EQ(30, fps.TimeAtFrame(3, EXACT));
EXPECT_EQ(40, fps.TimeAtFrame(4, EXACT));
ASSERT_NO_THROW(fps = Framerate({ -10, 20, 30, 40, 50 }));
EXPECT_EQ(0, fps.TimeAtFrame(0, EXACT));
EXPECT_EQ(30, fps.TimeAtFrame(1, EXACT));
EXPECT_EQ(40, fps.TimeAtFrame(2, EXACT));
EXPECT_EQ(50, fps.TimeAtFrame(3, EXACT));
EXPECT_EQ(60, fps.TimeAtFrame(4, EXACT));
}
TEST(lagi_vfr, rational_timebase) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001));
for (int i = 0; i < 100000; ++i) {
EXPECT_EQ(i * 1001, fps.TimeAtFrame(i * 30, EXACT));
EXPECT_EQ(i * 30, fps.FrameAtTime(i * 1001, EXACT));
}
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
for (int i = 0; i < 100000; ++i) {
EXPECT_EQ(i * 1001, fps.TimeAtFrame(i * 24, EXACT));
EXPECT_EQ(i * 24, fps.FrameAtTime(i * 1001, EXACT));
}
}
TEST(lagi_vfr, no_intermediate_overflow) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(1.0));
int last_frame = INT_MAX / 1000;
EXPECT_EQ(last_frame * 1000, fps.TimeAtFrame(last_frame, EXACT));
EXPECT_EQ(last_frame, fps.FrameAtTime(last_frame * 1000, EXACT));
}
TEST(lagi_vfr, duplicate_timestamps) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate({ 0, 0, 1, 2, 2, 3 }));
EXPECT_EQ(1, fps.FrameAtTime(0, EXACT));
EXPECT_EQ(2, fps.FrameAtTime(1, EXACT));
EXPECT_EQ(4, fps.FrameAtTime(2, EXACT));
EXPECT_EQ(5, fps.FrameAtTime(3, EXACT));
EXPECT_EQ(0, fps.TimeAtFrame(0, EXACT));
EXPECT_EQ(0, fps.TimeAtFrame(1, EXACT));
EXPECT_EQ(1, fps.TimeAtFrame(2, EXACT));
EXPECT_EQ(2, fps.TimeAtFrame(3, EXACT));
EXPECT_EQ(2, fps.TimeAtFrame(4, EXACT));
EXPECT_EQ(3, fps.TimeAtFrame(5, EXACT));
ASSERT_NO_THROW(fps = Framerate({ 0, 100, 100, 200, 300 }));
EXPECT_EQ(0, fps.FrameAtTime(0, EXACT));
EXPECT_EQ(0, fps.FrameAtTime(99, EXACT));
EXPECT_EQ(2, fps.FrameAtTime(100, EXACT));
EXPECT_EQ(2, fps.FrameAtTime(199, EXACT));
EXPECT_EQ(3, fps.FrameAtTime(200, EXACT));
}
#define EXPECT_SMPTE(eh, em, es, ef) \
EXPECT_EQ(eh, h); \
EXPECT_EQ(em, m); \
EXPECT_EQ(es, s); \
EXPECT_EQ(ef, f)
TEST(lagi_vfr, to_smpte_ntsc) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001));
EXPECT_TRUE(fps.NeedsDropFrames());
int h = -1, m = -1, s = -1, f = -1;
ASSERT_NO_THROW(fps.SmpteAtFrame(0, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 1);
ASSERT_NO_THROW(fps.SmpteAtFrame(29, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 29);
ASSERT_NO_THROW(fps.SmpteAtFrame(30, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 1, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1799, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 59, 29);
ASSERT_NO_THROW(fps.SmpteAtFrame(1800, &h, &m, &s, &f));
EXPECT_SMPTE(0, 1, 0, 2);
ASSERT_NO_THROW(fps.SmpteAtFrame(3597, &h, &m, &s, &f));
EXPECT_SMPTE(0, 1, 59, 29);
ASSERT_NO_THROW(fps.SmpteAtFrame(3598, &h, &m, &s, &f));
EXPECT_SMPTE(0, 2, 0, 2);
ASSERT_NO_THROW(fps.SmpteAtFrame(5396, &h, &m, &s, &f));
EXPECT_SMPTE(0, 3, 0, 2);
ASSERT_NO_THROW(fps.SmpteAtFrame(7194, &h, &m, &s, &f));
EXPECT_SMPTE(0, 4, 0, 2);
ASSERT_NO_THROW(fps.SmpteAtFrame(107892, &h, &m, &s, &f));
EXPECT_SMPTE(1, 0, 0, 0);
for (int i = 0; i < 60 * 60 * 10; ++i) {
ASSERT_NO_THROW(fps.SmpteAtTime(i * 1000, &h, &m, &s, &f));
ASSERT_NEAR(i, h * 3600 + m * 60 + s, 1);
}
}
TEST(lagi_vfr, to_smpte_double_ntsc) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(60000, 1001));
EXPECT_TRUE(fps.NeedsDropFrames());
int h = -1, m = -1, s = -1, f = -1;
ASSERT_NO_THROW(fps.SmpteAtFrame(0, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 1);
ASSERT_NO_THROW(fps.SmpteAtFrame(59, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 59);
ASSERT_NO_THROW(fps.SmpteAtFrame(60, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 1, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(3599, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 59, 59);
ASSERT_NO_THROW(fps.SmpteAtFrame(3600, &h, &m, &s, &f));
EXPECT_SMPTE(0, 1, 0, 4);
ASSERT_NO_THROW(fps.SmpteAtFrame(7195, &h, &m, &s, &f));
EXPECT_SMPTE(0, 1, 59, 59);
ASSERT_NO_THROW(fps.SmpteAtFrame(7196, &h, &m, &s, &f));
EXPECT_SMPTE(0, 2, 0, 4);
ASSERT_NO_THROW(fps.SmpteAtFrame(215784, &h, &m, &s, &f));
EXPECT_SMPTE(1, 0, 0, 0);
for (int i = 0; i < 60 * 60 * 10; ++i) {
ASSERT_NO_THROW(fps.SmpteAtTime(i * 1000, &h, &m, &s, &f));
ASSERT_NEAR(i, h * 3600 + m * 60 + s, 1);
}
}
TEST(lagi_vfr, to_smpte_pal) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(25, 1));
EXPECT_FALSE(fps.NeedsDropFrames());
int h = -1, m = -1, s = -1, f = -1;
ASSERT_NO_THROW(fps.SmpteAtFrame(0, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 1);
ASSERT_NO_THROW(fps.SmpteAtFrame(24, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 24);
ASSERT_NO_THROW(fps.SmpteAtFrame(25, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 1, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1499, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 59, 24);
ASSERT_NO_THROW(fps.SmpteAtFrame(1500, &h, &m, &s, &f));
EXPECT_SMPTE(0, 1, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(25 * 60 * 60, &h, &m, &s, &f));
EXPECT_SMPTE(1, 0, 0, 0);
for (int i = 0; i < 60 * 60 * 10; ++i) {
ASSERT_NO_THROW(fps.SmpteAtTime(i * 1000, &h, &m, &s, &f));
ASSERT_EQ(i, h * 3600 + m * 60 + s);
}
}
// this test is different from the above due to that the exact frames which are
// skipped are undefined, so instead it tests that the error never exceeds the
// limit
TEST(lagi_vfr, to_smpte_decimated) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
EXPECT_TRUE(fps.NeedsDropFrames());
int h = -1, m = -1, s = -1, f = -1;
ASSERT_NO_THROW(fps.SmpteAtFrame(0, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 1);
for (int frame = 0; frame < 100000; ++frame) {
ASSERT_NO_THROW(fps.SmpteAtFrame(frame, &h, &m, &s, &f));
int expected_time = fps.TimeAtFrame(frame);
int real_time = int((h * 3600 + m * 60 + s + f / 24.0) * 1000.0);
ASSERT_NEAR(expected_time, real_time, 600.0 / fps.FPS());
}
}
TEST(lagi_vfr, to_smpte_manydrop) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(24, 11));
EXPECT_TRUE(fps.NeedsDropFrames());
int h = -1, m = -1, s = -1, f = -1;
ASSERT_NO_THROW(fps.SmpteAtFrame(0, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 0);
ASSERT_NO_THROW(fps.SmpteAtFrame(1, &h, &m, &s, &f));
EXPECT_SMPTE(0, 0, 0, 1);
for (int frame = 0; frame < 1000; ++frame) {
ASSERT_NO_THROW(fps.SmpteAtFrame(frame, &h, &m, &s, &f));
int expected_time = fps.TimeAtFrame(frame);
int real_time = int((h * 3600 + m * 60 + s + f / 3.0) * 1000.0);
ASSERT_NEAR(expected_time, real_time, 600.0 / fps.FPS());
}
}
TEST(lagi_vfr, from_smpte_ntsc) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001));
EXPECT_EQ(0, fps.FrameAtSmpte(0, 0, 0, 0));
EXPECT_EQ(1, fps.FrameAtSmpte(0, 0, 0, 1));
EXPECT_EQ(29, fps.FrameAtSmpte(0, 0, 0, 29));
EXPECT_EQ(30, fps.FrameAtSmpte(0, 0, 1, 0));
EXPECT_EQ(1799, fps.FrameAtSmpte(0, 0, 59, 29));
EXPECT_EQ(1800, fps.FrameAtSmpte(0, 1, 0, 0));
EXPECT_EQ(1800, fps.FrameAtSmpte(0, 1, 0, 1));
EXPECT_EQ(1800, fps.FrameAtSmpte(0, 1, 0, 2));
EXPECT_EQ(3597, fps.FrameAtSmpte(0, 1, 59, 29));
EXPECT_EQ(3598, fps.FrameAtSmpte(0, 2, 0, 0));
EXPECT_EQ(3598, fps.FrameAtSmpte(0, 2, 0, 1));
EXPECT_EQ(3598, fps.FrameAtSmpte(0, 2, 0, 2));
EXPECT_EQ(5396, fps.FrameAtSmpte(0, 3, 0, 2));
EXPECT_EQ(7194, fps.FrameAtSmpte(0, 4, 0, 2));
EXPECT_EQ(107892, fps.FrameAtSmpte(1, 0, 0, 0));
}
TEST(lagi_vfr, from_smpte_double_ntsc) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(60000, 1001));
EXPECT_TRUE(fps.NeedsDropFrames());
EXPECT_EQ(0, fps.FrameAtSmpte(0, 0, 0, 0));
EXPECT_EQ(1, fps.FrameAtSmpte(0, 0, 0, 1));
EXPECT_EQ(59, fps.FrameAtSmpte(0, 0, 0, 59));
EXPECT_EQ(60, fps.FrameAtSmpte(0, 0, 1, 0));
EXPECT_EQ(3599, fps.FrameAtSmpte(0, 0, 59, 59));
EXPECT_EQ(3600, fps.FrameAtSmpte(0, 1, 0, 4));
EXPECT_EQ(7195, fps.FrameAtSmpte(0, 1, 59, 59));
EXPECT_EQ(7196, fps.FrameAtSmpte(0, 2, 0, 4));
EXPECT_EQ(10792, fps.FrameAtSmpte(0, 3, 0, 0));
EXPECT_EQ(10792, fps.FrameAtSmpte(0, 3, 0, 1));
EXPECT_EQ(10792, fps.FrameAtSmpte(0, 3, 0, 2));
EXPECT_EQ(10792, fps.FrameAtSmpte(0, 3, 0, 3));
EXPECT_EQ(10792, fps.FrameAtSmpte(0, 3, 0, 4));
EXPECT_EQ(10793, fps.FrameAtSmpte(0, 3, 0, 5));
EXPECT_EQ(215784, fps.FrameAtSmpte(1, 0, 0, 0));
}
TEST(lagi_vfr, from_smpte_pal) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(25, 1));
EXPECT_FALSE(fps.NeedsDropFrames());
EXPECT_EQ(0, fps.FrameAtSmpte(0, 0, 0, 0));
EXPECT_EQ(1, fps.FrameAtSmpte(0, 0, 0, 1));
EXPECT_EQ(24, fps.FrameAtSmpte(0, 0, 0, 24));
EXPECT_EQ(25, fps.FrameAtSmpte(0, 0, 1, 0));
EXPECT_EQ(1499, fps.FrameAtSmpte(0, 0, 59, 24));
EXPECT_EQ(1500, fps.FrameAtSmpte(0, 1, 0, 0));
EXPECT_EQ(25 * 60 * 60, fps.FrameAtSmpte(1, 0, 0, 0));
}
TEST(lagi_vfr, roundtrip_smpte_ntsc) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001));
int h = -1, m = -1, s = -1, f = -1;
for (int i = 0; i < 100000; ++i) {
ASSERT_NO_THROW(fps.SmpteAtFrame(i, &h, &m, &s, &f));
ASSERT_EQ(i, fps.FrameAtSmpte(h, m, s, f));
}
}
TEST(lagi_vfr, roundtrip_smpte_pal) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(25, 1));
int h = -1, m = -1, s = -1, f = -1;
for (int i = 0; i < 100000; ++i) {
ASSERT_NO_THROW(fps.SmpteAtFrame(i, &h, &m, &s, &f));
ASSERT_EQ(i, fps.FrameAtSmpte(h, m, s, f));
}
}
TEST(lagi_vfr, roundtrip_smpte_manydrop) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(20, 11));
int h = -1, m = -1, s = -1, f = -1;
for (int i = 0; i < 10000; ++i) {
ASSERT_NO_THROW(fps.SmpteAtFrame(i, &h, &m, &s, &f));
ASSERT_EQ(i, fps.FrameAtSmpte(h, m, s, f));
}
}
TEST(lagi_vfr, roundtrip_smpte_decimated) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(24000, 1001));
int h = -1, m = -1, s = -1, f = -1;
for (int i = 0; i < 100000; ++i) {
ASSERT_NO_THROW(fps.SmpteAtFrame(i, &h, &m, &s, &f));
ASSERT_EQ(i, fps.FrameAtSmpte(h, m, s, f));
}
}
TEST(lagi_vfr, to_smpte_ntsc_nodrop) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001, false));
int h = -1, m = -1, s = -1, f = -1;
for (int i = 0; i < 100000; ++i) {
ASSERT_NO_THROW(fps.SmpteAtFrame(i, &h, &m, &s, &f));
ASSERT_EQ(i, h * 60 * 60 * 30 + m * 60 * 30 + s * 30 + f);
}
}
TEST(lagi_vfr, from_smpte_ntsc_nodrop) {
Framerate fps;
ASSERT_NO_THROW(fps = Framerate(30000, 1001, false));
int h = 0, m = 0, s = 0, f = 0;
int i = 0;
while (h < 10) {
if (f >= 30) {
f = 0;
++s;
}
if (s >= 60) {
s = 0;
++m;
}
if (m >= 60) {
m = 0;
++h;
}
ASSERT_EQ(i, fps.FrameAtSmpte(h, m, s, f));
++i;
++f;
}
}
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