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#include "SkBenchmark.h"
#include "SkCanvas.h"
#include "SkFontHost.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkSfntUtils.h"
#include "SkString.h"
#include "SkTemplates.h"
static void dump_font(const char name[], SkFontID fontID) {
SkDebugf("Font \"%s\" %x\n", name, fontID);
int count = SkFontHost::CountTables(fontID);
SkAutoTArray<SkFontTableTag> storage(count);
SkFontTableTag* tags = storage.get();
SkFontHost::GetTableTags(fontID, tags);
for (int i = 0; i < count; i++) {
uint32_t tag = tags[i];
uint8_t data[4];
size_t size = SkFontHost::GetTableSize(fontID, tag);
size_t bytes = SkFontHost::GetTableData(fontID, tag,
0, sizeof(data), data);
SkDebugf(" tag=%c%c%c%c size=%d bytes=%d %x %x %x %x\n",
uint8_t(tag>>24), uint8_t(tag>>16), uint8_t(tag>>8), uint8_t(tag),
size, bytes, data[0], data[1], data[2], data[3]);
}
SkSfntTable_head head;
if (SkSfntUtils::ReadTable_head(fontID, &head)) {
SkDebugf("--- head: version=%x magic=%x upem=%d style=%x\n", head.fVersion,
head.fMagicNumber, head.fUnitsPerEm, head.fMacStyle);
} else {
SkDebugf("------- head wasn't read\n");
}
SkSfntTable_maxp maxp;
if (SkSfntUtils::ReadTable_maxp(fontID, &maxp)) {
SkDebugf("--- maxp: version=%x glyphs=%d points=%d ctrs=%d\n", maxp.fVersion,
maxp.fNumGlyphs, maxp.fMaxPoints, maxp.fMaxContours);
} else {
SkDebugf("------- maxp wasn't read\n");
}
}
static void test_tables() {
static bool gOnce;
if (gOnce) {
return;
}
gOnce = true;
static const char* gNames[] = {
"Arial", "Times", "Courier"
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); i++) {
SkTypeface* tf = SkTypeface::CreateFromName(gNames[i], SkTypeface::kNormal);
if (tf) {
SkFontID fontID = tf->uniqueID();
dump_font(gNames[i], fontID);
tf->unref();
}
}
}
/* Some considerations for performance:
short -vs- long strings (measuring overhead)
tiny -vs- large pointsize (measure blit -vs- overhead)
1 -vs- many point sizes (measure cache lookup)
normal -vs- subpixel -vs- lineartext (minor)
force purge after each draw to measure scaler
textencoding?
text -vs- postext - pathtext
*/
class TextBench : public SkBenchmark {
SkPaint fPaint;
int fCount;
SkPoint* fPos;
SkString fText;
SkString fName;
enum { N = 300 };
public:
TextBench(const char text[], int ps, bool linearText, bool posText) {
if (false) {
test_tables();
}
fText.set(text);
fPaint.setAntiAlias(true);
fPaint.setTextSize(SkIntToScalar(ps));
fPaint.setLinearText(linearText);
if (posText) {
SkAutoTArray<SkScalar> storage(fText.size());
SkScalar* widths = storage.get();
fCount = fPaint.getTextWidths(fText.c_str(), fText.size(), widths);
fPos = new SkPoint[fCount];
SkScalar x = 0;
for (int i = 0; i < fCount; i++) {
fPos[i].set(x, 0);
x += widths[i];
}
} else {
fCount = 0;
fPos = NULL;
}
}
virtual ~TextBench() {
delete[] fPos;
}
protected:
virtual const char* onGetName() {
fName.printf("text_%g", SkScalarToFloat(fPaint.getTextSize()));
if (fPaint.isLinearText()) {
fName.append("_linear");
}
if (fPos) {
fName.append("_pos");
}
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
const SkIPoint dim = this->getSize();
SkRandom rand;
SkPaint paint(fPaint);
this->setupPaint(&paint);
const SkScalar x0 = SkIntToScalar(-10);
const SkScalar y0 = SkIntToScalar(-10);
for (int i = 0; i < N; i++) {
SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
if (fPos) {
canvas->save(SkCanvas::kMatrix_SaveFlag);
canvas->translate(x, y);
canvas->drawPosText(fText.c_str(), fText.size(), fPos, paint);
canvas->restore();
} else {
canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
}
}
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
#define STR "Hamburgefons"
#define SMALL 9
#define BIG 48
static SkBenchmark* Fact0(void*) { return new TextBench(STR, SMALL, false, false); }
static SkBenchmark* Fact1(void*) { return new TextBench(STR, SMALL, false, true); }
static SkBenchmark* Fact2(void*) { return new TextBench(STR, SMALL, true, false); }
static SkBenchmark* Fact3(void*) { return new TextBench(STR, SMALL, true, true); }
static SkBenchmark* Fact4(void*) { return new TextBench(STR, BIG, false, false); }
static SkBenchmark* Fact5(void*) { return new TextBench(STR, BIG, false, true); }
static SkBenchmark* Fact6(void*) { return new TextBench(STR, BIG, true, false); }
static SkBenchmark* Fact7(void*) { return new TextBench(STR, BIG, true, true); }
static BenchRegistry gReg0(Fact0);
static BenchRegistry gReg1(Fact1);
static BenchRegistry gReg2(Fact2);
static BenchRegistry gReg3(Fact3);
static BenchRegistry gReg4(Fact4);
static BenchRegistry gReg5(Fact5);
static BenchRegistry gReg6(Fact6);
static BenchRegistry gReg7(Fact7);
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