1 /* This file is part of the Pangolin Project.
2  * http://github.com/stevenlovegrove/Pangolin
3  *
4  * Copyright (c) 2014 Steven Lovegrove
5  *
6  * Permission is hereby granted, free of charge, to any person
7  * obtaining a copy of this software and associated documentation
8  * files (the "Software"), to deal in the Software without
9  * restriction, including without limitation the rights to use,
10  * copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the
12  * Software is furnished to do so, subject to the following
13  * conditions:
14  *
15  * The above copyright notice and this permission notice shall be
16  * included in all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
20  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25  * OTHER DEALINGS IN THE SOFTWARE.
26  */
27 
28 #pragma once
29 
30 #include <pangolin/pangolin.h>
31 #include <pangolin/video/video.h>
32 
33 namespace pangolin
34 {
35 
36 // Enum to match libdc1394's dc1394_bayer_method_t
37 typedef enum {
38     BAYER_METHOD_NEAREST = 0,
39     BAYER_METHOD_SIMPLE,
40     BAYER_METHOD_BILINEAR,
41     BAYER_METHOD_HQLINEAR,
42     BAYER_METHOD_DOWNSAMPLE_,
43     BAYER_METHOD_EDGESENSE,
44     BAYER_METHOD_VNG,
45     BAYER_METHOD_AHD,
46 
47     // Pangolin custom defines
48     BAYER_METHOD_NONE = 512,
49     BAYER_METHOD_DOWNSAMPLE,
50     BAYER_METHOD_DOWNSAMPLE_MONO
51 } bayer_method_t;
52 
53 // Enum to match libdc1394's dc1394_color_filter_t
54 typedef enum {
55     DC1394_COLOR_FILTER_RGGB = 512,
56     DC1394_COLOR_FILTER_GBRG,
57     DC1394_COLOR_FILTER_GRBG,
58     DC1394_COLOR_FILTER_BGGR
59 } color_filter_t;
60 
61 // Video class that debayers its video input using the given method.
62 class PANGOLIN_EXPORT DebayerVideo :
63         public VideoInterface,
64         public VideoFilterInterface,
65         public BufferAwareVideoInterface
66 {
67 public:
68     DebayerVideo(std::unique_ptr<VideoInterface>& videoin, const std::vector<bayer_method_t> &method, color_filter_t tile);
69     ~DebayerVideo();
70 
71     //! Implement VideoInput::Start()
72     void Start();
73 
74     //! Implement VideoInput::Stop()
75     void Stop();
76 
77     //! Implement VideoInput::SizeBytes()
78     size_t SizeBytes() const;
79 
80     //! Implement VideoInput::Streams()
81     const std::vector<StreamInfo>& Streams() const;
82 
83     //! Implement VideoInput::GrabNext()
84     bool GrabNext( unsigned char* image, bool wait = true );
85 
86     //! Implement VideoInput::GrabNewest()
87     bool GrabNewest( unsigned char* image, bool wait = true );
88 
89     std::vector<VideoInterface*>& InputStreams();
90 
91     static color_filter_t ColorFilterFromString(std::string str);
92 
93     static bayer_method_t BayerMethodFromString(std::string str);
94 
95     uint32_t AvailableFrames() const;
96 
97     bool DropNFrames(uint32_t n);
98 
99 protected:
100     void ProcessStreams(unsigned char* out, const unsigned char* in);
101 
102     std::unique_ptr<VideoInterface> src;
103     std::vector<VideoInterface*> videoin;
104     std::vector<StreamInfo> streams;
105 
106     size_t size_bytes;
107     std::unique_ptr<unsigned char[]> buffer;
108 
109     std::vector<bayer_method_t> methods;
110     color_filter_t tile;
111 
112     picojson::value device_properties;
113     picojson::value frame_properties;
114 };
115 
116 }
117