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#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string>
#include "ebur128.h"
static double malloc_fail_rate = 100.0;
static double malloc_fail_percentage = 0.995;
extern "C" void* my_malloc(size_t size) {
if (size > 64 * 1024 * 1024) {
return NULL;
}
if (!(rand() % ((int) malloc_fail_rate))) {
return NULL;
}
malloc_fail_rate *= malloc_fail_percentage;
if (malloc_fail_rate < 2) {
malloc_fail_rate = 2;
}
return malloc(size);
}
extern "C" void* my_calloc(size_t nmemb, size_t size) {
if (size * nmemb > 64 * 1024 * 1024) {
return NULL;
}
if (!(rand() % ((int) malloc_fail_rate))) {
return NULL;
}
malloc_fail_rate *= malloc_fail_percentage;
if (malloc_fail_rate < 2) {
malloc_fail_rate = 2;
}
return calloc(nmemb, size);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
unsigned int channels;
unsigned long samplerate;
int mode;
unsigned int new_channels;
unsigned long new_samplerate;
unsigned long window;
unsigned int random_seed;
size_t data_offset = sizeof(channels) + sizeof(samplerate) + sizeof(mode) +
sizeof(new_channels) + sizeof(new_samplerate) +
sizeof(window) + sizeof(random_seed);
if (size < data_offset) {
return 0;
}
memcpy(&channels, data, sizeof(channels));
data += sizeof(channels);
memcpy(&samplerate, data, sizeof(samplerate));
data += sizeof(samplerate);
memcpy(&mode, data, sizeof(mode));
data += sizeof(mode);
memcpy(&new_channels, data, sizeof(new_channels));
data += sizeof(new_channels);
memcpy(&new_samplerate, data, sizeof(new_samplerate));
data += sizeof(new_samplerate);
memcpy(&window, data, sizeof(window));
data += sizeof(window);
memcpy(&random_seed, data, sizeof(random_seed));
data += sizeof(random_seed);
srand(random_seed);
size -= data_offset;
if (rand() % 5) {
mode &= (1 << 7) - 1;
mode |= EBUR128_MODE_TRUE_PEAK | EBUR128_MODE_HISTOGRAM;
samplerate %= 96000;
new_samplerate %= 96000;
channels = 20;
new_channels = 30;
}
if (new_channels < channels) {
return 0;
}
ebur128_state* state = ebur128_init(channels, samplerate, mode);
if (state) {
if (ebur128_add_frames_int(state, (int const*) data,
size / channels / sizeof(int)) ||
ebur128_set_max_window(state, window) ||
ebur128_change_parameters(state, new_channels, new_samplerate) ||
ebur128_add_frames_int(state, (int const*) data,
size / new_channels / sizeof(int))) {
ebur128_destroy(&state);
return 0;
}
ebur128_destroy(&state);
}
return 0;
}
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