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#include <stdbool.h>
#include <tiffio.h>
#include "greatest.h"
#include "libdng.h"
static enum greatest_test_res
check_str_tag(TIFF *im, uint32_t tag, const char *name, const char *expected)
{
char *temp;
if (TIFFGetField(im, tag, &temp) != 1) {
FAILm(name);
}
ASSERT_STR_EQm(name, expected, temp);
PASS();
}
static enum greatest_test_res
check_int_tag(TIFF *im, uint32_t tag, const char *name, int expected)
{
uint32_t temp = 0;
if (TIFFGetField(im, tag, &temp) != 1) {
FAILm(name);
}
ASSERT_EQ_FMTm(name, expected, temp, "%d");
PASS();
}
static enum greatest_test_res
check_float_tag(TIFF *im, uint32_t tag, const char *name, float expected)
{
float temp;
if (TIFFGetField(im, tag, &temp) != 1) {
FAILm(name);
}
ASSERT_IN_RANGEm(name, expected, temp, 0.0000001f);
PASS();
}
TEST generate_simple_dng(void)
{
libdng_info info = {0};
libdng_new(&info);
ASSERT_EQm("Set mode", 1, libdng_set_mode_from_name(&info, "RGGB"));
ASSERT_EQm("Set make", 1, libdng_set_make_model(&info, "Make", "Model"));
ASSERT_EQm("Set software", 1, libdng_set_software(&info, "Software"));
ASSERT_EQm("Set orientation", 1, libdng_set_orientation(&info, 4));
ASSERT_EQm("Set exposuretime", 1, libdng_set_exposure_time(&info, 0.04f));
ASSERT_EQm("Set fnumber", 1, libdng_set_fnumber(&info, 2.8f));
ASSERT_EQm("Set fnumber", 1, libdng_set_focal_length(&info, 50.0f, 1.5f));
ASSERT_EQm("Set framerate", 1, libdng_set_frame_rate(&info, 30.0f));
ASSERT_EQm("Set distortion", 1, libdng_set_distortion(&info, 1.0f, 2.0f, 3.0f));
ASSERT_EQm("Set vignette", 1, libdng_set_vignette(&info, 1.0f, -1.0f, 6.0f));
ASSERT_EQm("Set color matrix 1", 1, libdng_set_color_matrix_1(&info, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f));
ASSERT_EQm("Set color matrix 2", 1, libdng_set_color_matrix_2(&info, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f));
ASSERT_EQm("Set forward matrix 1", 1, libdng_set_forward_matrix_1(&info, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f));
ASSERT_EQm("Set forward matrix 2", 1, libdng_set_forward_matrix_2(&info, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f));
uint8_t *data = malloc(1280 * 720);
ASSERT_EQm("Write DNG", 1, libdng_write(&info, "test.dng", 1280, 720, data, 1280 * 720));
free(data);
libdng_free(&info);
// Use LibTIFF directly to verify results
TIFF *im = TIFFOpen("test.dng", "r");
if (im == NULL) {
FAILm("Could not open result");
}
toff_t exif_offset;
if (TIFFGetField(im, TIFFTAG_EXIFIFD, &exif_offset) != 1) {
FAILm("Could not find EXIF data");
}
// Check IFD0 with most metadata and the thumbnail image
CHECK_CALL(check_int_tag(im, TIFFTAG_ORIENTATION, "ORIENTATION", 4));
CHECK_CALL(check_int_tag(im, TIFFTAG_BITSPERSAMPLE, "THUMB_BPS", 8));
CHECK_CALL(check_int_tag(im, TIFFTAG_SAMPLESPERPIXEL, "THUMB_CHANNELS", 3));
CHECK_CALL(check_int_tag(im, TIFFTAG_PHOTOMETRIC, "THUMB_PHOTOMETRIC", PHOTOMETRIC_RGB));
CHECK_CALL(check_str_tag(im, TIFFTAG_MAKE, "MAKE", "Make"));
CHECK_CALL(check_str_tag(im, TIFFTAG_MODEL, "MODEL", "Model"));
CHECK_CALL(check_str_tag(im, TIFFTAG_UNIQUECAMERAMODEL, "UCM", "Make Model"));
CHECK_CALL(check_str_tag(im, TIFFTAG_SOFTWARE, "SOFTWARE", "Software"));
CHECK_CALL(check_int_tag(im, TIFFTAG_ORIENTATION, "ORIENTATION", 4));
// Check the custom tags
#define MPTAG_VERSION 49982
#define MPTAG_DISTORTION 49983
#define MPTAG_VIGNETTE 49984
unsigned short count;
float *fvalues;
uint8_t *u8values;
if (TIFFGetField(im, MPTAG_VERSION, &count, &u8values) != 1) {
FAILm("Could not read MPTAG_VERSION");
}
ASSERT_EQ_FMTm("MPTAG_VERSION count", 4, count, "%d");
ASSERT_EQ_FMTm("MPTAG_VERSION[0]", 1, u8values[0], "%d");
ASSERT_EQ_FMTm("MPTAG_VERSION[1]", 0, u8values[1], "%d");
ASSERT_EQ_FMTm("MPTAG_VERSION[2]", 0, u8values[2], "%d");
ASSERT_EQ_FMTm("MPTAG_VERSION[3]", 0, u8values[3], "%d");
if (TIFFGetField(im, MPTAG_DISTORTION, &fvalues) != 1) {
FAILm("Could not read MPTAG_DISTORTION");
}
ASSERT_IN_RANGEm("MPTAG_DISTORTION[0]", 1.0f, fvalues[0], 0.0000001f);
ASSERT_IN_RANGEm("MPTAG_DISTORTION[1]", 2.0f, fvalues[1], 0.0000001f);
ASSERT_IN_RANGEm("MPTAG_DISTORTION[2]", 3.0f, fvalues[2], 0.0000001f);
if (TIFFGetField(im, MPTAG_VIGNETTE, &fvalues) != 1) {
FAILm("Could not read MPTAG_VIGNETTE");
}
ASSERT_IN_RANGEm("MPTAG_VIGNETTE[0]", 1.0f, fvalues[0], 0.0000001f);
ASSERT_IN_RANGEm("MPTAG_VIGNETTE[1]", -1.0f, fvalues[1], 0.0000001f);
ASSERT_IN_RANGEm("MPTAG_VIGNETTE[2]", 6.0f, fvalues[2], 0.0000001f);
// Switch to IFD1 which has the raw data
int subifd_count = 0;
void *ptr;
toff_t subifd_offsets[2];
TIFFGetField(im, TIFFTAG_SUBIFD, &subifd_count, &ptr);
memcpy(subifd_offsets, ptr, subifd_count * sizeof(subifd_offsets[0]));
TIFFSetSubDirectory(im, subifd_offsets[0]);
// Check IFD1 metadata
CHECK_CALL(check_int_tag(im, TIFFTAG_IMAGEWIDTH, "RAW_WIDTH", 1280));
CHECK_CALL(check_int_tag(im, TIFFTAG_IMAGELENGTH, "RAW_HEIGHT", 720));
CHECK_CALL(check_int_tag(im, TIFFTAG_BITSPERSAMPLE, "RAW_BPS", 8));
CHECK_CALL(check_int_tag(im, TIFFTAG_SAMPLESPERPIXEL, "RAW_CHANNELS", 1));
CHECK_CALL(check_int_tag(im, TIFFTAG_PHOTOMETRIC, "RAW_PHOTOMETRIC", PHOTOMETRIC_CFA));
// Switch to the EXIF block with the generic picture metadata
TIFFReadEXIFDirectory(im, exif_offset);
CHECK_CALL(check_float_tag(im, EXIFTAG_EXPOSURETIME, "EXPOSURETIME", 0.04f));
CHECK_CALL(check_float_tag(im, EXIFTAG_FNUMBER, "FNUMBER", 2.8f));
CHECK_CALL(check_float_tag(im, EXIFTAG_FOCALLENGTH, "FOCALLENGTH", 50.0f));
CHECK_CALL(check_int_tag(im, EXIFTAG_FOCALLENGTHIN35MMFILM, "FOCALLENGTHIN35MMFILM", 75));
PASS();
}
TEST read_dng(void)
{
// Generate test timestamp
struct tm testtime;
strptime("2024-08-27 01:02:03", "%Y-%m-%d %H:%M:%S", &testtime);
// Generate a file to read
libdng_info info = {0};
libdng_new(&info);
libdng_set_datetime(&info, testtime);
libdng_set_mode_from_name(&info, "RGGB");
libdng_set_make_model(&info, "Make", "Model");
libdng_set_software(&info, "Software");
libdng_set_orientation(&info, LIBDNG_ORIENTATION_RIGHTBOT);
libdng_set_exposure_time(&info, 1.4f);
libdng_set_exposure_program(&info, LIBDNG_EXPOSUREPROGRAM_PORTRAIT);
libdng_set_fnumber(&info, 1.8f);
libdng_set_focal_length(&info, 75.0f, 1.6f);
uint8_t *data = malloc(1280 * 720);
libdng_write(&info, "test.dng", 1280, 720, data, 1280 * 720);
free(data);
libdng_free(&info);
// Read the file again
libdng_info dng = {0};
libdng_read(&dng, "test.dng");
ASSERT_EQm("Bit depth", 8, dng.bit_depth);
ASSERT_EQm("CFFA[0]", 0, dng.cfapattern[0]);
ASSERT_EQm("CFFA[1]", 1, dng.cfapattern[1]);
ASSERT_EQm("CFFA[2]", 1, dng.cfapattern[2]);
ASSERT_EQm("CFFA[3]", 2, dng.cfapattern[3]);
ASSERT_STR_EQm("Make", "Make", dng.camera_make);
ASSERT_STR_EQm("Model", "Model", dng.camera_model);
ASSERT_STR_EQm("Software", "Software", dng.software);
ASSERT_EQm("Orientation", LIBDNG_ORIENTATION_RIGHTBOT, dng.orientation);
ASSERT_IN_RANGEm("Exposure time", 1.4f, dng.exposure_time, 0.0000001f);
ASSERT_EQm("Exposure program", LIBDNG_EXPOSUREPROGRAM_PORTRAIT, dng.exposure_program);
ASSERT_IN_RANGEm("FNumber", 1.8f, dng.fnumber, 0.0000001f);
ASSERT_IN_RANGEm("Focal length", 75.0f, dng.focal_length, 0.0000001f);
ASSERT_IN_RANGEm("Crop factor", 1.6f, dng.crop_factor, 0.0000001f);
char orig[sizeof "2011-10-08T07:07:09Z"];
char parsed[sizeof "2011-10-08T07:07:09Z"];
strftime(orig, sizeof orig, "%FT%TZ", &testtime);
strftime(parsed, sizeof parsed, "%FT%TZ", &dng.datetime);
ASSERT_STR_EQm("DateTime", orig, parsed);
ASSERT_EQ_FMTm("Year", testtime.tm_year, dng.datetime.tm_year, "%d");
ASSERT_EQ_FMTm("Month", testtime.tm_mon, dng.datetime.tm_mon, "%d");
ASSERT_EQ_FMTm("Day", testtime.tm_mday, dng.datetime.tm_mday, "%d");
ASSERT_EQ_FMTm("Hour", testtime.tm_hour, dng.datetime.tm_hour, "%d");
ASSERT_EQ_FMTm("Minute", testtime.tm_min, dng.datetime.tm_min, "%d");
ASSERT_EQ_FMTm("Second", testtime.tm_sec, dng.datetime.tm_sec, "%d");
PASS();
}
SUITE (test_suite)
{
RUN_TEST(generate_simple_dng);
RUN_TEST(read_dng);
}
GREATEST_MAIN_DEFS();
int
main(int argc, char **argv)
{
GREATEST_MAIN_BEGIN();
libdng_init();
RUN_SUITE(test_suite);
GREATEST_MAIN_END();
}
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