1 /*
2  *      Copyright (C) 2014 Team Kodi
3  *      http://kodi.tv
4  *
5  *  This Program is free software; you can redistribute it and/or modify
6  *  it under the terms of the GNU General Public License as published by
7  *  the Free Software Foundation; either version 2, or (at your option)
8  *  any later version.
9  *
10  *  This Program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  *  GNU General Public License for more details.
14  *
15  *  You should have received a copy of the GNU General Public License
16  *  along with XBMC; see the file COPYING.  If not, see
17  *  <http://www.gnu.org/licenses/>.
18  *
19  */
20 
21 #pragma once
22 
23 #include <string>
24 #include <vector>
25 
26 /* forward declarations */
27 
28 class DecodedFrame;
29 class DecodedFrames;
30 
31 class IDecoder
32 {
33   public:
34     virtual ~IDecoder() = default;
35     virtual bool CanDecode(const std::string &filename) = 0;
36     virtual bool LoadFile(const std::string &filename, DecodedFrames &frames) = 0;
37     virtual void FreeDecodedFrame(DecodedFrame &frame) = 0;
38     virtual const char* GetImageFormatName() = 0;
39     virtual const char* GetDecoderName() = 0;
40 
GetSupportedExtensions()41     const std::vector<std::string>& GetSupportedExtensions()
42     {
43       m_supportedExtensions.clear();
44       FillSupportedExtensions();
45       return m_supportedExtensions;
46     }
47 
48   protected:
49     virtual void FillSupportedExtensions() = 0;
50     //fill this with extensions in FillSupportedExtensions like ".png"
51     std::vector<std::string> m_supportedExtensions;
52 };
53 
54 class RGBAImage
55 {
56 public:
57   RGBAImage() = default;
58 
59   char* pixels = nullptr; // image data
60   int width = 0; // width
61   int height = 0; // height
62   int bbp = 0; // bits per pixel
63   int pitch = 0; // rowsize in bytes
64 };
65 
66 class DecodedFrame
67 {
68 public:
69   DecodedFrame() = default;
70   RGBAImage rgbaImage; /* rgbaimage for this frame */
71   int delay = 0; /* Frame delay in ms */
72   IDecoder* decoder = nullptr; /* Pointer to decoder */
73 };
74 
75 class DecodedFrames
76 {
77   public:
78     DecodedFrames() = default;
79     std::vector<DecodedFrame> frameList;
80 
clear()81     void clear()
82     {
83       for (auto f : frameList)
84       {
85         if (f.decoder != NULL)
86         {
87           f.decoder->FreeDecodedFrame(f);
88         }
89         else
90         {
91           fprintf(stderr,
92             "ERROR: %s - can not determine decoder type for frame!\n",
93             __FUNCTION__);
94         }
95       }
96       frameList.clear();
97     }
98 };
99