SkMallocPixelRef.cpp revision ff0da4ff483ba7b4468b862949ffb3de505cba14 
1
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8#include "SkMallocPixelRef.h"
9#include "SkBitmap.h"
10#include "SkFlattenable.h"
11
12SkMallocPixelRef::SkMallocPixelRef(void* storage, size_t size,
13                                   SkColorTable* ctable) {
14    if (NULL == storage) {
15        storage = sk_malloc_throw(size);
16    }
17    fStorage = storage;
18    fSize = size;
19    fCTable = ctable;
20    SkSafeRef(ctable);
21
22    this->setPreLocked(fStorage, fCTable);
23}
24
25SkMallocPixelRef::~SkMallocPixelRef() {
26    SkSafeUnref(fCTable);
27    sk_free(fStorage);
28}
29
30void* SkMallocPixelRef::onLockPixels(SkColorTable** ct) {
31    *ct = fCTable;
32    return fStorage;
33}
34
35void SkMallocPixelRef::onUnlockPixels() {
36    // nothing to do
37}
38
39void SkMallocPixelRef::flatten(SkFlattenableWriteBuffer& buffer) const {
40    this->INHERITED::flatten(buffer);
41
42    buffer.write32(fSize);
43    buffer.writePad(fStorage, fSize);
44    if (fCTable) {
45        buffer.writeBool(true);
46        fCTable->flatten(buffer);
47    } else {
48        buffer.writeBool(false);
49    }
50}
51
52SkMallocPixelRef::SkMallocPixelRef(SkFlattenableReadBuffer& buffer)
53        : INHERITED(buffer, NULL) {
54    fSize = buffer.readU32();
55    fStorage = sk_malloc_throw(fSize);
56    buffer.read(fStorage, fSize);
57    if (buffer.readBool()) {
58        fCTable = SkNEW_ARGS(SkColorTable, (buffer));
59    } else {
60        fCTable = NULL;
61    }
62
63    this->setPreLocked(fStorage, fCTable);
64}
65
66SK_DEFINE_FLATTENABLE_REGISTRAR(SkMallocPixelRef)
67