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#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <thread>
#include <condition_variable>
#include <vector>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "hb-subset.h"
enum operation_t
{
subset_codepoints,
subset_glyphs
};
#define SUBSET_FONT_BASE_PATH "test/subset/data/fonts/"
struct test_input_t
{
const char *font_path;
const unsigned max_subset_size;
} default_tests[] =
{
{SUBSET_FONT_BASE_PATH "Roboto-Regular.ttf", 4000},
{SUBSET_FONT_BASE_PATH "Amiri-Regular.ttf", 4000},
{SUBSET_FONT_BASE_PATH "NotoNastaliqUrdu-Regular.ttf", 1000},
{SUBSET_FONT_BASE_PATH "NotoSansDevanagari-Regular.ttf", 1000},
{SUBSET_FONT_BASE_PATH "Mplus1p-Regular.ttf", 10000},
{SUBSET_FONT_BASE_PATH "SourceHanSans-Regular_subset.otf", 10000},
{SUBSET_FONT_BASE_PATH "SourceSansPro-Regular.otf", 2000},
};
static test_input_t *tests = default_tests;
static unsigned num_tests = sizeof (default_tests) / sizeof (default_tests[0]);
// https://en.cppreference.com/w/cpp/thread/condition_variable/wait
static std::condition_variable cv;
static std::mutex cv_m;
static bool ready = false;
static unsigned num_repetitions = 1;
static unsigned num_threads = 3;
static void AddCodepoints(const hb_set_t* codepoints_in_font,
unsigned subset_size,
hb_subset_input_t* input)
{
auto *unicodes = hb_subset_input_unicode_set (input);
hb_codepoint_t cp = HB_SET_VALUE_INVALID;
for (unsigned i = 0; i < subset_size; i++) {
if (!hb_set_next (codepoints_in_font, &cp)) return;
hb_set_add (unicodes, cp);
}
}
static void AddGlyphs(unsigned num_glyphs_in_font,
unsigned subset_size,
hb_subset_input_t* input)
{
auto *glyphs = hb_subset_input_glyph_set (input);
for (unsigned i = 0; i < subset_size && i < num_glyphs_in_font; i++) {
hb_set_add (glyphs, i);
}
}
static void subset (operation_t operation,
const test_input_t &test_input,
hb_face_t *face)
{
// Wait till all threads are ready.
{
std::unique_lock<std::mutex> lk (cv_m);
cv.wait(lk, [] {return ready;});
}
unsigned subset_size = test_input.max_subset_size;
hb_subset_input_t* input = hb_subset_input_create_or_fail ();
assert (input);
switch (operation)
{
case subset_codepoints:
{
hb_set_t* all_codepoints = hb_set_create ();
hb_face_collect_unicodes (face, all_codepoints);
AddCodepoints(all_codepoints, subset_size, input);
hb_set_destroy (all_codepoints);
}
break;
case subset_glyphs:
{
unsigned num_glyphs = hb_face_get_glyph_count (face);
AddGlyphs(num_glyphs, subset_size, input);
}
break;
}
for (unsigned i = 0; i < num_repetitions; i++)
{
hb_face_t* subset = hb_subset_or_fail (face, input);
assert (subset);
hb_face_destroy (subset);
}
hb_subset_input_destroy (input);
}
static void test_operation (operation_t operation,
const char *operation_name,
const test_input_t &test_input)
{
char name[1024] = "subset";
const char *p;
strcat (name, "/");
p = strrchr (test_input.font_path, '/');
strcat (name, p ? p + 1 : test_input.font_path);
strcat (name, "/");
strcat (name, operation_name);
printf ("Testing %s\n", name);
hb_face_t *face;
{
hb_blob_t *blob = hb_blob_create_from_file_or_fail (test_input.font_path);
assert (blob);
face = hb_face_create (blob, 0);
hb_blob_destroy (blob);
}
std::vector<std::thread> threads;
for (unsigned i = 0; i < num_threads; i++)
threads.push_back (std::thread (subset, operation, test_input, face));
{
std::unique_lock<std::mutex> lk (cv_m);
ready = true;
}
cv.notify_all();
for (unsigned i = 0; i < num_threads; i++)
threads[i].join ();
hb_face_destroy (face);
}
int main(int argc, char** argv)
{
if (argc > 1)
num_threads = atoi (argv[1]);
if (argc > 2)
num_repetitions = atoi (argv[2]);
if (argc > 4)
{
num_tests = argc - 3;
tests = (test_input_t *) calloc (num_tests, sizeof (test_input_t));
for (unsigned i = 0; i < num_tests; i++)
{
tests[i].font_path = argv[3 + i];
}
}
printf ("Num threads %u; num repetitions %u\n", num_threads, num_repetitions);
for (unsigned i = 0; i < num_tests; i++)
{
auto& test_input = tests[i];
test_operation (subset_codepoints, "codepoints", test_input);
test_operation (subset_glyphs, "glyphs", test_input);
}
if (tests != default_tests)
free (tests);
}
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