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Thirdparty/Pangolin/include/pangolin/video/iostream_operators.h

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+/* This file is part of the Pangolin Project.
+ * http://github.com/stevenlovegrove/Pangolin
+ *
+ * Copyright (c) 2015 Steven Lovegrove
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include <iostream>
+#include <cctype>
+
+#include <pangolin/video/video_exception.h>
+#include <pangolin/utils/file_utils.h>
+#include <pangolin/video/stream_info.h>
+
+namespace pangolin
+{
+
+struct PANGOLIN_EXPORT Point
+{
+    inline Point() : x(0), y(0) {}
+    inline Point(size_t x, size_t y) : x(x), y(y) {}
+    size_t x;
+    size_t y;
+};
+
+typedef Point ImageDim;
+
+struct PANGOLIN_EXPORT ImageRoi
+{
+    inline ImageRoi() : x(0), y(0), w(0), h(0) {}
+    inline ImageRoi(size_t x, size_t y, size_t w, size_t h) : x(x), y(y), w(w), h(h) {}
+    size_t x; size_t y;
+    size_t w; size_t h;
+};
+
+inline std::istream& operator>> (std::istream &is, ImageDim &dim)
+{
+    if(std::isdigit(is.peek()) ) {
+        // Expect 640x480, 640*480, ...
+        is >> dim.x; is.get(); is >> dim.y;
+    }else{
+        // Expect 'VGA', 'QVGA', etc
+        std::string sdim;
+        is >> sdim;
+        ToUpper(sdim);
+
+        if( !sdim.compare("QQVGA") ) {
+            dim = ImageDim(160,120);
+        }else if( !sdim.compare("HQVGA") ) {
+            dim = ImageDim(240,160);
+        }else if( !sdim.compare("QVGA") ) {
+            dim = ImageDim(320,240);
+        }else if( !sdim.compare("WQVGA") ) {
+            dim = ImageDim(360,240);
+        }else if( !sdim.compare("HVGA") ) {
+            dim = ImageDim(480,320);
+        }else if( !sdim.compare("VGA") ) {
+            dim = ImageDim(640,480);
+        }else if( !sdim.compare("WVGA") ) {
+            dim = ImageDim(720,480);
+        }else if( !sdim.compare("SVGA") ) {
+            dim = ImageDim(800,600);
+        }else if( !sdim.compare("DVGA") ) {
+            dim = ImageDim(960,640);
+        }else if( !sdim.compare("WSVGA") ) {
+            dim = ImageDim(1024,600);
+        }else{
+            throw VideoException("Unrecognised image-size string.");
+        }
+    }
+    return is;
+}
+
+inline std::istream& operator>> (std::istream &is, ImageRoi &roi)
+{
+    is >> roi.x; is.get(); is >> roi.y; is.get();
+    is >> roi.w; is.get(); is >> roi.h;
+    return is;
+}
+
+inline std::istream& operator>> (std::istream &is, PixelFormat& fmt)
+{
+    std::string sfmt;
+    is >> sfmt;
+    fmt = PixelFormatFromString(sfmt);
+    return is;
+}
+
+inline std::istream& operator>> (std::istream &is, Image<unsigned char>& img)
+{
+    size_t offset;
+    is >> offset; is.get();
+    img.ptr = (unsigned char*)(offset);
+    is >> img.w; is.get();
+    is >> img.h; is.get();
+    is >> img.pitch;
+    return is;
+}
+
+inline std::istream& operator>> (std::istream &is, StreamInfo &stream)
+{
+    PixelFormat fmt;
+    Image<unsigned char> img_offset;
+    is >> img_offset; is.get();
+    is >> fmt;
+    stream = StreamInfo(fmt, img_offset);
+    return is;
+}
+
+}