image: Move image code into its own module.

[apitrace] / image / image.hpp

diff --git a/image/image.hpp b/image/image.hpp
new file mode 100644 (file)
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+++ b/image/image.hpp
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+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+/*
+ * Image I/O.
+ */
+
+#ifndef _IMAGE_HPP_
+#define _IMAGE_HPP_
+
+
+#include <fstream>
+
+
+namespace image {
+
+
+class Image {
+public:
+    unsigned width;
+    unsigned height;
+    unsigned channels;
+
+    // Flipped vertically or not
+    bool flipped;
+
+    // Pixels in RGBA format
+    unsigned char *pixels;
+
+    inline Image(unsigned w, unsigned h, unsigned c = 4, bool f = false) : 
+        width(w),
+        height(h),
+        channels(c),
+        flipped(f),
+        pixels(new unsigned char[h*w*c])
+    {}
+
+    inline ~Image() {
+        delete [] pixels;
+    }
+
+    inline unsigned char *start(void) {
+        return flipped ? pixels + (height - 1)*width*channels : pixels;
+    }
+
+    inline const unsigned char *start(void) const {
+        return flipped ? pixels + (height - 1)*width*channels : pixels;
+    }
+
+    inline unsigned char *end(void) {
+        return flipped ? pixels - width*channels : pixels + height*width*channels;
+    }
+
+    inline const unsigned char *end(void) const {
+        return flipped ? pixels - width*channels : pixels + height*width*channels;
+    }
+
+    inline signed stride(void) const {
+        return flipped ? -(signed)(width*channels) : width*channels;
+    }
+
+    bool writeBMP(const char *filename) const;
+
+    void writePNM(std::ostream &os, const char *comment = NULL) const;
+
+    inline bool writePNM(const char *filename, const char *comment = NULL) const {
+        std::ofstream os(filename, std::ofstream::binary);
+        if (!os) {
+            return false;
+        }
+        writePNM(os, comment);
+        return true;
+    }
+
+    bool
+    writePNG(std::ostream &os) const;
+
+    inline bool
+    writePNG(const char *filename) const {
+        std::ofstream os(filename, std::ofstream::binary);
+        if (!os) {
+            return false;
+        }
+        return writePNG(os);
+    }
+
+    double compare(Image &ref);
+};
+
+
+Image *
+readPNG(const char *filename);
+
+const char *
+readPNMHeader(const char *buffer, size_t size, unsigned *channels, unsigned *width, unsigned *height);
+
+
+} /* namespace image */
+
+
+#endif /* _IMAGE_HPP_ */