xref: /third_party/skia/include/encode/SkEncoder.h (revision cb93a386) 
1/*
2 * Copyright 2017 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkEncoder_DEFINED
9#define SkEncoder_DEFINED
10
11#include "include/core/SkPixmap.h"
12#include "include/private/SkNoncopyable.h"
13#include "include/private/SkTemplates.h"
14
15class SK_API SkEncoder : SkNoncopyable {
16public:
17
18    /**
19     *  Encode |numRows| rows of input.  If the caller requests more rows than are remaining
20     *  in the src, this will encode all of the remaining rows.  |numRows| must be greater
21     *  than zero.
22     */
23    bool encodeRows(int numRows);
24
25    virtual ~SkEncoder() {}
26
27protected:
28
29    virtual bool onEncodeRows(int numRows) = 0;
30
31    SkEncoder(const SkPixmap& src, size_t storageBytes)
32        : fSrc(src)
33        , fCurrRow(0)
34        , fStorage(storageBytes)
35    {}
36
37    const SkPixmap&        fSrc;
38    int                    fCurrRow;
39    SkAutoTMalloc<uint8_t> fStorage;
40};
41
42#endif
43