1/*
2 * Copyright 2015 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 SkJpegDecoderMgr_DEFINED
9#define SkJpegDecoderMgr_DEFINED
10
11#include "include/codec/SkCodec.h"
12#include "src/codec/SkCodecPriv.h"
13#include <stdio.h>
14#include "src/codec/SkJpegUtility.h"
15
16extern "C" {
17    #include "jpeglib.h"
18}
19
20class JpegDecoderMgr : SkNoncopyable {
21public:
22
23    /*
24     * Print a useful error message and return false
25     */
26    bool returnFalse(const char caller[]);
27
28    /*
29     * Print a useful error message and return a decode failure
30     */
31    SkCodec::Result returnFailure(const char caller[], SkCodec::Result result);
32
33    /*
34     * Create the decode manager
35     * Does not take ownership of stream
36     */
37    JpegDecoderMgr(SkStream* stream);
38
39    /*
40     * Initialize decompress struct
41     * Initialize the source manager
42     */
43    void  init();
44
45    /*
46     * Returns true if it successfully sets outColor to the encoded color,
47     * and false otherwise.
48     */
49    bool getEncodedColor(SkEncodedInfo::Color* outColor);
50
51    /*
52     * Free memory used by the decode manager
53     */
54    ~JpegDecoderMgr();
55
56    /*
57     * Get the skjpeg_error_mgr in order to set an error return jmp_buf
58     */
59    skjpeg_error_mgr* errorMgr() { return &fErrorMgr; }
60
61    /*
62     * Get function for the decompress info struct
63     */
64    jpeg_decompress_struct* dinfo() { return &fDInfo; }
65
66private:
67
68    jpeg_decompress_struct fDInfo;
69    skjpeg_source_mgr      fSrcMgr;
70    skjpeg_error_mgr       fErrorMgr;
71    jpeg_progress_mgr      fProgressMgr;
72    bool                   fInit;
73};
74
75#endif
76