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/* See COPYING file for copyright and license details. */
#include <math.h>
#include <sndfile.h>
#include <string.h>
#include <stdlib.h>
#include "ebur128.h"
double test_global_loudness(const char* filename) {
SF_INFO file_info;
SNDFILE* file;
sf_count_t nr_frames_read;
ebur128_state* st = NULL;
double gated_loudness;
double* buffer;
memset(&file_info, '\0', sizeof(file_info));
file = sf_open(filename, SFM_READ, &file_info);
if (!file) {
fprintf(stderr, "Could not open file %s!\n", filename);
return 0.0;
}
st = ebur128_init((size_t) file_info.channels,
(size_t) file_info.samplerate,
EBUR128_MODE_I);
if (file_info.channels == 5) {
ebur128_set_channel(st, 0, EBUR128_LEFT);
ebur128_set_channel(st, 1, EBUR128_RIGHT);
ebur128_set_channel(st, 2, EBUR128_CENTER);
ebur128_set_channel(st, 3, EBUR128_LEFT_SURROUND);
ebur128_set_channel(st, 4, EBUR128_RIGHT_SURROUND);
}
buffer = (double*) malloc(st->samplerate * st->channels * sizeof(double));
while ((nr_frames_read = sf_readf_double(file, buffer,
(sf_count_t) st->samplerate))) {
ebur128_add_frames_double(st, buffer, (size_t) nr_frames_read);
}
ebur128_loudness_global(st, &gated_loudness);
/* clean up */
ebur128_destroy(&st);
free(buffer);
buffer = NULL;
if (sf_close(file)) {
fprintf(stderr, "Could not close input file!\n");
}
return gated_loudness;
}
double test_loudness_range(const char* filename) {
SF_INFO file_info;
SNDFILE* file;
sf_count_t nr_frames_read;
ebur128_state* st = NULL;
double loudness_range;
double* buffer;
memset(&file_info, '\0', sizeof(file_info));
file = sf_open(filename, SFM_READ, &file_info);
if (!file) {
fprintf(stderr, "Could not open file %s!\n", filename);
return 0.0;
}
st = ebur128_init((size_t) file_info.channels,
(size_t) file_info.samplerate,
EBUR128_MODE_LRA);
if (file_info.channels == 5) {
ebur128_set_channel(st, 0, EBUR128_LEFT);
ebur128_set_channel(st, 1, EBUR128_RIGHT);
ebur128_set_channel(st, 2, EBUR128_CENTER);
ebur128_set_channel(st, 3, EBUR128_LEFT_SURROUND);
ebur128_set_channel(st, 4, EBUR128_RIGHT_SURROUND);
}
buffer = (double*) malloc(st->samplerate * st->channels * sizeof(double));
while ((nr_frames_read = sf_readf_double(file, buffer,
(sf_count_t) st->samplerate))) {
ebur128_add_frames_double(st, buffer, (size_t) nr_frames_read);
}
ebur128_loudness_range(st, &loudness_range);
/* clean up */
ebur128_destroy(&st);
free(buffer);
buffer = NULL;
if (sf_close(file)) {
fprintf(stderr, "Could not close input file!\n");
}
return loudness_range;
}
double test_true_peak(const char* filename) {
SF_INFO file_info;
SNDFILE* file;
sf_count_t nr_frames_read;
ebur128_state* st = NULL;
double true_peak;
double* buffer;
memset(&file_info, '\0', sizeof(file_info));
file = sf_open(filename, SFM_READ, &file_info);
if (!file) {
fprintf(stderr, "Could not open file %s!\n", filename);
return 0.0;
}
st = ebur128_init((size_t) file_info.channels,
(size_t) file_info.samplerate,
EBUR128_MODE_LRA);
if (file_info.channels == 5) {
ebur128_set_channel(st, 0, EBUR128_LEFT);
ebur128_set_channel(st, 1, EBUR128_RIGHT);
ebur128_set_channel(st, 2, EBUR128_CENTER);
ebur128_set_channel(st, 3, EBUR128_LEFT_SURROUND);
ebur128_set_channel(st, 4, EBUR128_RIGHT_SURROUND);
}
buffer = (double*) malloc(st->samplerate * st->channels * sizeof(double));
while ((nr_frames_read = sf_readf_double(file, buffer,
(sf_count_t) st->samplerate))) {
ebur128_add_frames_double(st, buffer, (size_t) nr_frames_read);
}
ebur128_loudness_range(st, &true_peak);
/* clean up */
ebur128_destroy(&st);
free(buffer);
buffer = NULL;
if (sf_close(file)) {
fprintf(stderr, "Could not close input file!\n");
}
return true_peak;
}
double gr[] = {-23.0,
-33.0,
-23.0,
-23.0,
-23.0,
-23.0,
-23.0,
-23.0,
-23.0};
double gre[] = {-2.2953556442089987e+01,
-3.2959860397340044e+01,
-2.2995899818255047e+01,
-2.3035918615414182e+01,
-2.2949997446096436e+01,
-2.3017157781104373e+01,
-2.3017157781104373e+01,
-2.2980242495081757e+01,
-2.3009077718930545e+01};
double lra[] = {10.0,
5.0,
20.0,
15.0,
5.0,
15.0};
double lrae[] = {1.0001105488329134e+01,
4.9993734051522178e+00,
1.9995064067783115e+01,
1.4999273937723455e+01,
4.9747585878473721e+00,
1.4993650849123316e+01};
int main() {
double result;
fprintf(stderr, "Note: the tests do not have to pass with EXACT_PASSED.\n"
"Passing these tests does not mean that the library is "
"100%% EBU R 128 compliant!\n\n");
#define TEST_GLOBAL_LOUDNESS(filename, i) \
result = test_global_loudness(filename); \
if (result == result) { \
printf("%s, %s - %s: %1.16e\n", \
(result <= gr[i] + 0.1 && result >= gr[i] - 0.1) ? "PASSED" : "FAILED", \
(result == gre[i]) ? "EXACT_PASSED" : "EXACT_FAILED", \
filename, result); \
}
TEST_GLOBAL_LOUDNESS("seq-3341-1-16bit.wav", 0)
TEST_GLOBAL_LOUDNESS("seq-3341-2-16bit.wav", 1)
TEST_GLOBAL_LOUDNESS("seq-3341-3-16bit-v02.wav", 2)
TEST_GLOBAL_LOUDNESS("seq-3341-4-16bit-v02.wav", 3)
TEST_GLOBAL_LOUDNESS("seq-3341-5-16bit-v02.wav", 4)
TEST_GLOBAL_LOUDNESS("seq-3341-6-5channels-16bit.wav", 5)
TEST_GLOBAL_LOUDNESS("seq-3341-6-6channels-WAVEEX-16bit.wav", 6)
TEST_GLOBAL_LOUDNESS("seq-3341-7_seq-3342-5-24bit.wav", 7)
TEST_GLOBAL_LOUDNESS("seq-3341-2011-8_seq-3342-6-24bit-v02.wav", 8)
#define TEST_LRA(filename, i) \
result = test_loudness_range(filename); \
if (result == result) { \
printf("%s, %s - %s: %1.16e\n", \
(result <= lra[i] + 1 && result >= lra[i] - 1) ? "PASSED" : "FAILED", \
(result == lrae[i]) ? "EXACT_PASSED" : "EXACT_FAILED", \
filename, result); \
}
TEST_LRA("seq-3342-1-16bit.wav", 0)
TEST_LRA("seq-3342-2-16bit.wav", 1)
TEST_LRA("seq-3342-3-16bit.wav", 2)
TEST_LRA("seq-3342-4-16bit.wav", 3)
TEST_LRA("seq-3341-7_seq-3342-5-24bit.wav", 4)
TEST_LRA("seq-3341-2011-8_seq-3342-6-24bit-v02.wav", 5)
return 0;
}
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