static struct flow_interpolation_line_contributions *
LineContributions_alloc(flow_c * context, const uint32_t line_length, const uint32_t windows_size)
{
struct flow_interpolation_line_contributions * res = (struct flow_interpolation_line_contributions *)FLOW_malloc(
context, sizeof(struct flow_interpolation_line_contributions));
if (res == NULL) {
FLOW_error(context, flow_status_Out_of_memory);
return NULL;
}
res->WindowSize = windows_size;
res->LineLength = line_length;
res->ContribRow = (struct flow_interpolation_pixel_contributions *)FLOW_malloc(
context, line_length * sizeof(struct flow_interpolation_pixel_contributions));
if (!res->ContribRow) {
FLOW_free(context, res);
FLOW_error(context, flow_status_Out_of_memory);
return NULL;
}
float * allWeights = FLOW_calloc_array(context, windows_size * line_length, float);
if (!allWeights) {
FLOW_free(context, res->ContribRow);
FLOW_free(context, res);
FLOW_error(context, flow_status_Out_of_memory);
return NULL;
}
for (uint32_t i = 0; i < line_length; i++)
res->ContribRow[i].Weights = allWeights + (i * windows_size);
return res;
}
static double get_dssim_from_command(flow_c * c, const char * command)
{
FILE * fd;
#ifdef _MSC_VER
fd = _popen(command, "r");
#else
fd = popen(command, "r");
#endif
if (!fd)
return 200;
char buffer[256];
size_t chread;
/* String to store entire command contents in */
size_t comalloc = 256;
size_t comlen = 0;
char * comout = (char *)FLOW_malloc(c, comalloc);
/* Use fread so binary data is dealt with correctly */
while ((chread = fread(buffer, 1, sizeof(buffer), fd)) != 0) {
if (comlen + chread >= comalloc) {
comalloc *= 2;
comout = (char *)FLOW_realloc(c, comout, comalloc);
}
memmove(comout + comlen, buffer, chread);
comlen += chread;
}
#ifdef _MSC_VER
int exit_code = _pclose(fd);
#else
int exit_code = pclose(fd);
#endif
/* We can now work with the output as we please. Just print
* out to confirm output is as expected */
// fwrite(comout, 1, comlen, stdout);
double result = 125;
if (exit_code == 0) {
result = strtold(comout, NULL);
}
FLOW_free(c, comout);
return result;
}
