harfbuzz/perf/benchmark-subset.cc

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#include "benchmark/benchmark.h"
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#include <cassert>
#include <cstring>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "hb-subset.h"
enum operation_t
{
subset_codepoints,
subset_glyphs,
instance,
};
struct axis_location_t
{
hb_tag_t axis_tag;
float axis_value;
};
static const axis_location_t
_roboto_flex_instance_opts[] =
{
{HB_TAG ('w', 'g', 'h', 't'), 600.f},
{HB_TAG ('w', 'd', 't', 'h'), 75.f},
{HB_TAG ('o', 'p', 's', 'z'), 90.f},
{HB_TAG ('G', 'R', 'A', 'D'), -100.f},
{HB_TAG ('s', 'l', 'n', 't'), -3.f},
{HB_TAG ('X', 'T', 'R', 'A'), 500.f},
{HB_TAG ('X', 'O', 'P', 'Q'), 150.f},
{HB_TAG ('Y', 'O', 'P', 'Q'), 100.f},
{HB_TAG ('Y', 'T', 'L', 'C'), 480.f},
{HB_TAG ('Y', 'T', 'U', 'C'), 600.f},
{HB_TAG ('Y', 'T', 'A', 'S'), 800.f},
{HB_TAG ('Y', 'T', 'D', 'E'), -50.f},
{HB_TAG ('Y', 'T', 'F', 'I'), 600.f},
};
static const axis_location_t
_mplus_instance_opts[] =
{
{HB_TAG ('w', 'g', 'h', 't'), 800.f},
};
template <typename Type, unsigned int n>
static inline unsigned int ARRAY_LEN (const Type (&)[n]) { return n; }
#define SUBSET_FONT_BASE_PATH "test/subset/data/fonts/"
struct test_input_t
{
const char *font_path;
unsigned max_subset_size;
const axis_location_t *instance_opts;
unsigned num_instance_opts;
} default_tests[] =
{
{SUBSET_FONT_BASE_PATH "Roboto-Regular.ttf", 1000, nullptr, 0},
{SUBSET_FONT_BASE_PATH "Amiri-Regular.ttf", 4096, nullptr, 0},
{SUBSET_FONT_BASE_PATH "NotoNastaliqUrdu-Regular.ttf", 1400, nullptr, 0},
{SUBSET_FONT_BASE_PATH "NotoSansDevanagari-Regular.ttf", 1000, nullptr, 0},
{SUBSET_FONT_BASE_PATH "Mplus1p-Regular.ttf", 10000, nullptr, 0},
{SUBSET_FONT_BASE_PATH "SourceHanSans-Regular_subset.otf", 10000, nullptr, 0},
{SUBSET_FONT_BASE_PATH "SourceSansPro-Regular.otf", 2000, nullptr, 0},
{SUBSET_FONT_BASE_PATH "AdobeVFPrototype.otf", 300, nullptr, 0},
{SUBSET_FONT_BASE_PATH "MPLUS1-Variable.ttf", 6000, _mplus_instance_opts, ARRAY_LEN (_mplus_instance_opts)},
{SUBSET_FONT_BASE_PATH "RobotoFlex-Variable.ttf", 900, _roboto_flex_instance_opts, ARRAY_LEN (_roboto_flex_instance_opts)},
#if 0
{"perf/fonts/NotoSansCJKsc-VF.ttf", 100000},
#endif
};
static test_input_t *tests = default_tests;
static unsigned num_tests = sizeof (default_tests) / sizeof (default_tests[0]);
void AddCodepoints(const hb_set_t* codepoints_in_font,
unsigned subset_size,
hb_subset_input_t* input)
{
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auto *unicodes = hb_subset_input_unicode_set (input);
hb_codepoint_t cp = HB_SET_VALUE_INVALID;
for (unsigned i = 0; i < subset_size; i++) {
// TODO(garretrieger): pick randomly.
if (!hb_set_next (codepoints_in_font, &cp)) return;
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hb_set_add (unicodes, cp);
}
}
void AddGlyphs(unsigned num_glyphs_in_font,
unsigned subset_size,
hb_subset_input_t* input)
{
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auto *glyphs = hb_subset_input_glyph_set (input);
for (unsigned i = 0; i < subset_size && i < num_glyphs_in_font; i++) {
// TODO(garretrieger): pick randomly.
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hb_set_add (glyphs, i);
}
}
// Preprocess face and populate the subset accelerator on it to speed up
// the subsetting operations.
static hb_face_t* preprocess_face(hb_face_t* face)
{
hb_face_t* new_face = hb_subset_preprocess(face);
hb_face_destroy(face);
return new_face;
}
/* benchmark for subsetting a font */
static void BM_subset (benchmark::State &state,
operation_t operation,
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const test_input_t &test_input,
bool hinting)
{
unsigned subset_size = state.range(0);
hb_face_t *face = nullptr;
static hb_face_t *cached_face;
static const char *cached_font_path;
if (!cached_font_path || strcmp (cached_font_path, test_input.font_path))
{
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);
face = preprocess_face (face);
if (cached_face)
hb_face_destroy (cached_face);
cached_face = hb_face_reference (face);
cached_font_path = test_input.font_path;
}
else
face = hb_face_reference (cached_face);
hb_subset_input_t* input = hb_subset_input_create_or_fail ();
assert (input);
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if (!hinting)
hb_subset_input_set_flags (input, HB_SUBSET_FLAGS_NO_HINTING);
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switch (operation)
{
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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);
}
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break;
case subset_glyphs:
{
unsigned num_glyphs = hb_face_get_glyph_count (face);
AddGlyphs(num_glyphs, subset_size, input);
}
break;
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case instance:
{
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);
for (unsigned i = 0; i < test_input.num_instance_opts; i++)
hb_subset_input_pin_axis_location (input, face,
test_input.instance_opts[i].axis_tag,
test_input.instance_opts[i].axis_value);
}
break;
}
for (auto _ : state)
{
hb_face_t* subset = hb_subset_or_fail (face, input);
assert (subset);
hb_face_destroy (subset);
}
hb_subset_input_destroy (input);
hb_face_destroy (face);
}
static void test_subset (operation_t op,
const char *op_name,
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bool hinting,
benchmark::TimeUnit time_unit,
const test_input_t &test_input)
{
if (op == instance && test_input.instance_opts == nullptr)
return;
char name[1024] = "BM_subset/";
strcat (name, op_name);
strcat (name, "/");
const char *p = strrchr (test_input.font_path, '/');
strcat (name, p ? p + 1 : test_input.font_path);
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if (!hinting)
strcat (name, "/nohinting");
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benchmark::RegisterBenchmark (name, BM_subset, op, test_input, hinting)
->Range(10, test_input.max_subset_size)
->Unit(time_unit);
}
static void test_operation (operation_t op,
const char *op_name,
const test_input_t *tests,
unsigned num_tests,
benchmark::TimeUnit time_unit)
{
for (unsigned i = 0; i < num_tests; i++)
{
auto& test_input = tests[i];
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test_subset (op, op_name, true, time_unit, test_input);
test_subset (op, op_name, false, time_unit, test_input);
}
}
int main(int argc, char** argv)
{
benchmark::Initialize(&argc, argv);
if (argc > 1)
{
num_tests = (argc - 1) / 2;
tests = (test_input_t *) calloc (num_tests, sizeof (test_input_t));
for (unsigned i = 0; i < num_tests; i++)
{
tests[i].font_path = argv[1 + i * 2];
tests[i].max_subset_size = atoi (argv[2 + i * 2]);
}
}
#define TEST_OPERATION(op, time_unit) test_operation (op, #op, tests, num_tests, time_unit)
TEST_OPERATION (subset_glyphs, benchmark::kMillisecond);
TEST_OPERATION (subset_codepoints, benchmark::kMillisecond);
TEST_OPERATION (instance, benchmark::kMillisecond);
#undef TEST_OPERATION
benchmark::RunSpecifiedBenchmarks();
benchmark::Shutdown();
if (tests != default_tests)
free (tests);
}