static int filter_picture(const SkString& inFile, const SkString& outFile) {
SkAutoTUnref<SkPicture> inPicture;
SkFILEStream inStream(inFile.c_str());
if (inStream.isValid()) {
inPicture.reset(SkPicture::CreateFromStream(&inStream));
}
if (nullptr == inPicture.get()) {
SkDebugf("Could not read file %s\n", inFile.c_str());
return -1;
}
int localCount[SK_ARRAY_COUNT(gOptTable)];
memset(localCount, 0, sizeof(localCount));
SkDebugCanvas debugCanvas(SkScalarCeilToInt(inPicture->cullRect().width()),
SkScalarCeilToInt(inPicture->cullRect().height()));
inPicture->playback(&debugCanvas);
// delete the initial save and restore since replaying the commands will
// re-add them
if (debugCanvas.getSize() > 1) {
debugCanvas.deleteDrawCommandAt(0);
debugCanvas.deleteDrawCommandAt(debugCanvas.getSize()-1);
}
bool changed = true;
int numBefore = debugCanvas.getSize();
while (changed) {
changed = false;
for (int i = 0; i < debugCanvas.getSize(); ++i) {
for (size_t opt = 0; opt < SK_ARRAY_COUNT(gOptTable); ++opt) {
if ((*gOptTable[opt].fCheck)(&debugCanvas, i)) {
(*gOptTable[opt].fApply)(&debugCanvas, i);
++gOptTable[opt].fNumTimesApplied;
++localCount[opt];
if (debugCanvas.getSize() == i) {
// the optimization removed all the remaining operations
break;
}
opt = 0; // try all the opts all over again
changed = true;
}
}
}
}
int numAfter = debugCanvas.getSize();
if (!outFile.isEmpty()) {
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(inPicture->cullRect().width(),
inPicture->cullRect().height(),
nullptr, 0);
debugCanvas.draw(canvas);
SkAutoTUnref<SkPicture> outPicture(recorder.endRecording());
SkFILEWStream outStream(outFile.c_str());
outPicture->serialize(&outStream);
}
bool someOptFired = false;
for (size_t opt = 0; opt < SK_ARRAY_COUNT(gOptTable); ++opt) {
if (0 != localCount[opt]) {
SkDebugf("%d: %d ", opt, localCount[opt]);
someOptFired = true;
}
}
if (!someOptFired) {
SkDebugf("No opts fired\n");
} else {
SkDebugf("\t before: %d after: %d delta: %d\n",
numBefore, numAfter, numBefore-numAfter);
}
return 0;
}
