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imageLoader.h
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1 /*
2 * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
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8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 */
22
23 #ifndef __IMAGE_LOADER_H_
24 #define __IMAGE_LOADER_H_
25
26
27 #include "videoSource.h"
28
29 #include <string>
30 #include <vector>
31
32
52 class imageLoader : public videoSource
53 {
54 public:
58static imageLoader* Create( const char* path, const videoOptions& options=videoOptions() );
59
63static imageLoader* Create( const videoOptions& options );
64
68virtual ~imageLoader();
69
74virtual bool Capture( void** image, imageFormat format, uint64_t timeout=DEFAULT_TIMEOUT, int* status=NULL );
75
80virtual bool Open();
81
86virtual void Close();
87
94inline bool IsEOS() const { return mEOS; }
95
99virtual inline uint32_t GetType() const { return Type; }
100
104static const uint32_t Type = (1 << 4);
105
122static const char* SupportedExtensions[];
123
129static bool IsSupportedExtension( const char* ext );
130
131 protected:
132imageLoader( const videoOptions& options );
133
134inline bool isLooping() const { return (mOptions.loop < 0) || ((mOptions.loop > 0) && (mLoopCount < mOptions.loop)); }
135
137size_t mLoopCount;
139
140 std::vector<std::string> mFiles;
141 std::vector<void*> mBuffers;
142 };
143
144 #endif
Load an image or set of images from disk into GPU memory.
Definition: imageLoader.h:52
size_t mLoopCount
Definition: imageLoader.h:137
bool IsEOS() const
Return true if End Of Stream (EOS) has been reached.
Definition: imageLoader.h:94
bool isLooping() const
Definition: imageLoader.h:134
virtual void Close()
Close the stream.
static const uint32_t Type
Unique type identifier of imageLoader class.
Definition: imageLoader.h:104
virtual uint32_t GetType() const
Return the interface type (imageLoader::Type)
Definition: imageLoader.h:99
imageLoader::SupportedExtensions
static const char * SupportedExtensions[]
String array of supported image file extensions, terminated with a NULL sentinel value.
Definition: imageLoader.h:122
static imageLoader * Create(const char *path, const videoOptions &options=videoOptions())
Create an imageLoader instance from a path and optional videoOptions.
std::vector< std::string > mFiles
Definition: imageLoader.h:140
bool mEOS
Definition: imageLoader.h:136
size_t mNextFile
Definition: imageLoader.h:138
virtual ~imageLoader()
Destructor.
virtual bool Capture(void **image, imageFormat format, uint64_t timeout=DEFAULT_TIMEOUT, int *status=NULL)
Load the next frame.
int loop
Control the number of loops for videoSource disk-based inputs (for example, the number of times that ...
Definition: videoOptions.h:119
videoOptions mOptions
Definition: videoSource.h:378
imageLoader::IsSupportedExtension
static bool IsSupportedExtension(const char *ext)
Return true if the extension is in the list of SupportedExtensions.
static const uint64_t DEFAULT_TIMEOUT
The default Capture timeout (1000ms)
Definition: videoSource.h:371
The videoOptions struct contains common settings that are used to configure and query videoSource and...
Definition: videoOptions.h:37
imageLoader(const videoOptions &options)
imageFormat
The imageFormat enum is used to identify the pixel format and colorspace of an image.
Definition: imageFormat.h:49
virtual bool Open()
Open the stream.
std::vector< void * > mBuffers
Definition: imageLoader.h:141
The videoSource API is for capturing frames from video input devices such as MIPI CSI cameras,...
Definition: videoSource.h:118