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/* This is a test for the NCEPLIBS-g2c project. This test is for
* the JPEG compression functions.
*
* Ed Hartnett 11/1/21
*/
#include "grib2_int.h"
#include <stdio.h>
#include <stdlib.h>
#define DATA_LEN 4
#define PACKED_LEN 200
#define EPSILON .001
#define EPSILON_BIG .1
int
main()
{
int i;
printf("Testing JPEG functions.\n");
/* g2c_set_log_level(10); */
printf("Testing enc_jpeg2000()/dec_jpeg2000() call...");
{
unsigned char data[DATA_LEN] = {1, 2, 3, 4};
g2int width = 2, height = 2, nbits = 4;
g2int ltype = 0, ratio = 0, retry = 0, jpclen = PACKED_LEN;
char outjpc[PACKED_LEN];
g2int outfld[DATA_LEN];
int ret;
/* Encode some data. */
if ((ret = enc_jpeg2000(data, width, height, nbits, ltype,
ratio, retry, outjpc, jpclen)) < 0)
return G2C_ERROR;
/* Now decode it. */
if ((ret = dec_jpeg2000(outjpc, jpclen, outfld)))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
if (outfld[i] != data[i])
return G2C_ERROR;
}
}
printf("ok!\n");
printf("Testing g2c_enc_jpeg2000()/g2c_dec_jpeg2000() call...");
{
unsigned char data[DATA_LEN] = {1, 2, 3, 4};
int width = 2, height = 2, nbits = 4;
int ltype = 0, ratio = 0, retry = 0;
size_t jpclen = PACKED_LEN;
char outjpc[PACKED_LEN];
int outfld[DATA_LEN];
int ret;
/* Encode some data. */
if ((ret = g2c_enc_jpeg2000(data, width, height, nbits, ltype,
ratio, retry, outjpc, jpclen)) < 0)
return G2C_ERROR;
/* Now decode it. */
if ((ret = g2c_dec_jpeg2000(outjpc, jpclen, outfld)))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
if (outfld[i] != data[i])
return G2C_ERROR;
}
}
printf("ok!\n");
{
g2int height = 2, width = 2;
g2int len = PACKED_LEN, ndpts = DATA_LEN;
unsigned char cpack[PACKED_LEN];
printf("Testing jpcpack()/jpcunpack() call...");
{
float fld[DATA_LEN] = {100.0, 200.0, 300.0, 0.0};
float fld_in[DATA_LEN];
g2int lcpack = PACKED_LEN;
g2int idrstmpl[7] = {0, 1, 1, 16, 0, 0, 0};
int i;
/* Pack the data. */
jpcpack(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (jpcunpack(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
/* printf("%g %g\n", fld[i], fld_in[i]); */
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
}
printf("ok!\n");
printf("Testing g2c_jpcpackd()/g2c_jpcunpackd() call...");
{
double fld[DATA_LEN] = {10000.0, 20000.0, 30000.0, 0.0};
double fld_in[DATA_LEN];
size_t lcpack_st = PACKED_LEN;
int idrstmpl[7] = {0, 1, 1, 16, 0, 0, 0};
/* Pack the data. */
g2c_jpcpackd(fld, width, height, idrstmpl, cpack, &lcpack_st);
/* Unpack the data. */
if (g2c_jpcunpackd(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
/* printf("%g %g\n", fld[i], fld_in[i]); */
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
}
printf("ok!\n");
printf("Testing g2c_jpcpackf()/g2c_jpcunpackf() call...");
{
float fld[DATA_LEN] = {1000.0, 2000.0, 3000.0, 0.0};
float fld_in[DATA_LEN];
size_t lcpack_st = PACKED_LEN;
int idrstmpl[7] = {0, 1, 1, 16, 0, 0, 0};
/* Pack the data. */
g2c_jpcpackf(fld, width, height, idrstmpl, cpack, &lcpack_st);
/* Unpack the data. */
if (g2c_jpcunpackf(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
/* printf("%g %g\n", fld[i], fld_in[i]); */
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
}
printf("ok!\n");
printf("Testing jpcpack()/jpcunpack() call with different drstmpl values...");
{
float fld[DATA_LEN] = {1.0, 2.0, 3.0, 0.0};
float fld_in[DATA_LEN];
g2int lcpack = PACKED_LEN;
/* See
* https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_temp5-40.shtml */
g2int idrstmpl[7] = {
0, /* Reference value (R) (IEEE 32-bit floating-point value) */
0, /* Binary scale factor (E) */
1, /* Decimal scale factor (D) */
32, /* Number of bits required to hold the resulting scaled and referenced data values. (i.e. The depth of the grayscale image.) (see Note 2) */
0, /* Type of original field values (see Code Table 5.1) */
0, /* Type of Compression used. (see Code Table 5.40) */
1 /* Target compression ratio, M:1 (with respect to the bit-depth specified in octet 20), when octet 22 indicates Lossy Compression. Otherwise, set to missing (see Note 3) */
};
/* Pack the data. */
jpcpack(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (jpcunpack(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing g2c_jpcpackd()/g2c_jpcunpackd() call with different drstmpl values...");
{
double fld[DATA_LEN] = {1.0, 2.0, 3.0, 0.0};
double fld_in[DATA_LEN];
size_t lcpack = PACKED_LEN;
int idrstmpl[7] = {0, 0, 1, 32, 0, 0, 1};
/* Pack the data. */
g2c_jpcpackd(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (g2c_jpcunpackd(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing g2c_jpcpackd()/g2c_jpcunpackd() call with drstmpl values as in NCEPLIBS-g2 test_jpcpack...");
{
double fld[DATA_LEN] = {1.1, 2.2, 3.3, 4.4};
double fld_in[DATA_LEN];
size_t lcpack = PACKED_LEN;
int idrstmpl[7] = {0, 1, 1, 32, 0, 0, 1};
/* Pack the data. */
g2c_jpcpackd(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (g2c_jpcunpackd(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
if (abs(fld[i] - fld_in[i]) > EPSILON)
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing jpcpack()/jpcunpack() call with drstmpl values as in NCEPLIBS-g2 test_jpcpack...");
{
float fld[DATA_LEN] = {1.1, 2.2, 3.3, 4.4};
float fld_in[DATA_LEN];
g2int lcpack = PACKED_LEN;
g2int idrstmpl[7] = {0, 1, 1, 32, 0, 0, 1};
/* Pack the data. */
jpcpack(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (jpcunpack(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
{
/* printf("%d %g %g\n", i, fld[i], fld_in[i]); */
if (abs(fld[i] - fld_in[i]) > EPSILON_BIG)
return G2C_ERROR;
}
}
printf("ok!\n");
printf("Testing jpcpack()/jpcunpack() call with constant data field...");
{
float fld[DATA_LEN] = {1.0, 1.0, 1.0, 1.0};
float fld_in[DATA_LEN];
g2int lcpack = PACKED_LEN;
g2int idrstmpl[7] = {0, 0, 1, 32, 0, 0, 1};
/* Pack the data. */
jpcpack(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (jpcunpack(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
printf("ok!\n");
printf("Testing g2c_jpcpackd()/g2c_jpcunpackd() call with constant data field...");
{
double fld[DATA_LEN] = {1.0, 1.0, 1.0, 1.0};
double fld_in[DATA_LEN];
size_t lcpack = PACKED_LEN;
int idrstmpl[7] = {0, 0, 1, 32, 0, 0, 1};
/* Pack the data. */
g2c_jpcpackd(fld, width, height, idrstmpl, cpack, &lcpack);
/* Unpack the data. */
if (g2c_jpcunpackd(cpack, len, idrstmpl, ndpts, fld_in))
return G2C_ERROR;
for (i = 0; i < DATA_LEN; i++)
if (fld[i] != fld_in[i])
return G2C_ERROR;
}
printf("ok!\n");
}
printf("SUCCESS!\n");
return 0;
}
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