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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBigPicture.h"
#include "SkData.h"
#include "SkDrawable.h"
#include "SkLayerInfo.h"
#include "SkPictureRecorder.h"
#include "SkPictureUtils.h"
#include "SkRecord.h"
#include "SkRecordDraw.h"
#include "SkRecordOpts.h"
#include "SkRecorder.h"
#include "SkTypes.h"
SkPictureRecorder::SkPictureRecorder() {
fActivelyRecording = false;
fRecorder.reset(new SkRecorder(nullptr, SkRect::MakeWH(0, 0), &fMiniRecorder));
}
SkPictureRecorder::~SkPictureRecorder() {}
SkCanvas* SkPictureRecorder::beginRecording(const SkRect& cullRect,
SkBBHFactory* bbhFactory /* = nullptr */,
uint32_t recordFlags /* = 0 */) {
fCullRect = cullRect;
fFlags = recordFlags;
if (bbhFactory) {
fBBH.reset((*bbhFactory)(cullRect));
SkASSERT(fBBH.get());
}
if (!fRecord) {
fRecord.reset(new SkRecord);
}
SkRecorder::DrawPictureMode dpm = (recordFlags & kPlaybackDrawPicture_RecordFlag)
? SkRecorder::Playback_DrawPictureMode
: SkRecorder::Record_DrawPictureMode;
fRecorder->reset(fRecord.get(), cullRect, dpm, &fMiniRecorder);
fActivelyRecording = true;
return this->getRecordingCanvas();
}
SkCanvas* SkPictureRecorder::getRecordingCanvas() {
return fActivelyRecording ? fRecorder.get() : nullptr;
}
sk_sp<SkPicture> SkPictureRecorder::finishRecordingAsPicture() {
fActivelyRecording = false;
fRecorder->restoreToCount(1); // If we were missing any restores, add them now.
if (fRecord->count() == 0) {
return fMiniRecorder.detachAsPicture(fCullRect);
}
// TODO: delay as much of this work until just before first playback?
SkRecordOptimize(fRecord);
SkAutoTUnref<SkLayerInfo> saveLayerData;
if (fBBH && (fFlags & kComputeSaveLayerInfo_RecordFlag)) {
saveLayerData.reset(new SkLayerInfo);
}
SkDrawableList* drawableList = fRecorder->getDrawableList();
SkBigPicture::SnapshotArray* pictList =
drawableList ? drawableList->newDrawableSnapshot() : nullptr;
if (fBBH.get()) {
SkAutoTMalloc<SkRect> bounds(fRecord->count());
if (saveLayerData) {
SkRecordComputeLayers(fCullRect, *fRecord, bounds, pictList, saveLayerData);
} else {
SkRecordFillBounds(fCullRect, *fRecord, bounds);
}
fBBH->insert(bounds, fRecord->count());
// Now that we've calculated content bounds, we can update fCullRect, often trimming it.
// TODO: get updated fCullRect from bounds instead of forcing the BBH to return it?
SkRect bbhBound = fBBH->getRootBound();
SkASSERT((bbhBound.isEmpty() || fCullRect.contains(bbhBound))
|| (bbhBound.isEmpty() && fCullRect.isEmpty()));
fCullRect = bbhBound;
}
size_t subPictureBytes = fRecorder->approxBytesUsedBySubPictures();
for (int i = 0; pictList && i < pictList->count(); i++) {
subPictureBytes += SkPictureUtils::ApproximateBytesUsed(pictList->begin()[i]);
}
return sk_make_sp<SkBigPicture>(fCullRect, fRecord.release(), pictList, fBBH.release(),
saveLayerData.release(), subPictureBytes);
}
sk_sp<SkPicture> SkPictureRecorder::finishRecordingAsPictureWithCull(const SkRect& cullRect) {
fCullRect = cullRect;
return this->finishRecordingAsPicture();
}
void SkPictureRecorder::partialReplay(SkCanvas* canvas) const {
if (nullptr == canvas) {
return;
}
int drawableCount = 0;
SkDrawable* const* drawables = nullptr;
SkDrawableList* drawableList = fRecorder->getDrawableList();
if (drawableList) {
drawableCount = drawableList->count();
drawables = drawableList->begin();
}
SkRecordDraw(*fRecord, canvas, nullptr, drawables, drawableCount, nullptr/*bbh*/, nullptr/*callback*/);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
class SkRecordedDrawable : public SkDrawable {
SkAutoTUnref<SkRecord> fRecord;
SkAutoTUnref<SkBBoxHierarchy> fBBH;
SkAutoTDelete<SkDrawableList> fDrawableList;
const SkRect fBounds;
const bool fDoSaveLayerInfo;
public:
SkRecordedDrawable(SkRecord* record, SkBBoxHierarchy* bbh, SkDrawableList* drawableList,
const SkRect& bounds, bool doSaveLayerInfo)
: fRecord(SkRef(record))
, fBBH(SkSafeRef(bbh))
, fDrawableList(drawableList) // we take ownership
, fBounds(bounds)
, fDoSaveLayerInfo(doSaveLayerInfo)
{}
protected:
SkRect onGetBounds() override { return fBounds; }
void onDraw(SkCanvas* canvas) override {
SkDrawable* const* drawables = nullptr;
int drawableCount = 0;
if (fDrawableList) {
drawables = fDrawableList->begin();
drawableCount = fDrawableList->count();
}
SkRecordDraw(*fRecord, canvas, nullptr, drawables, drawableCount, fBBH, nullptr/*callback*/);
}
SkPicture* onNewPictureSnapshot() override {
SkBigPicture::SnapshotArray* pictList = nullptr;
if (fDrawableList) {
// TODO: should we plumb-down the BBHFactory and recordFlags from our host
// PictureRecorder?
pictList = fDrawableList->newDrawableSnapshot();
}
SkAutoTUnref<SkLayerInfo> saveLayerData;
if (fBBH && fDoSaveLayerInfo) {
// TODO: can we avoid work by not allocating / filling these bounds?
SkAutoTMalloc<SkRect> scratchBounds(fRecord->count());
saveLayerData.reset(new SkLayerInfo);
SkRecordComputeLayers(fBounds, *fRecord, scratchBounds, pictList, saveLayerData);
}
size_t subPictureBytes = 0;
for (int i = 0; pictList && i < pictList->count(); i++) {
subPictureBytes += SkPictureUtils::ApproximateBytesUsed(pictList->begin()[i]);
}
// SkBigPicture will take ownership of a ref on both fRecord and fBBH.
// We're not willing to give up our ownership, so we must ref them for SkPicture.
return new SkBigPicture(fBounds, SkRef(fRecord.get()), pictList, SkSafeRef(fBBH.get()),
saveLayerData.release(), subPictureBytes);
}
};
sk_sp<SkDrawable> SkPictureRecorder::finishRecordingAsDrawable() {
fActivelyRecording = false;
fRecorder->flushMiniRecorder();
fRecorder->restoreToCount(1); // If we were missing any restores, add them now.
// TODO: delay as much of this work until just before first playback?
SkRecordOptimize(fRecord);
if (fBBH.get()) {
SkAutoTMalloc<SkRect> bounds(fRecord->count());
SkRecordFillBounds(fCullRect, *fRecord, bounds);
fBBH->insert(bounds, fRecord->count());
}
sk_sp<SkDrawable> drawable =
sk_make_sp<SkRecordedDrawable>(fRecord, fBBH, fRecorder->detachDrawableList(), fCullRect,
SkToBool(fFlags & kComputeSaveLayerInfo_RecordFlag));
// release our refs now, so only the drawable will be the owner.
fRecord.reset(nullptr);
fBBH.reset(nullptr);
return drawable;
}
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