Added a new ImageReader class, which uses ImageMagick++ to read image files, and produce openshot::Frame objects.

src/ImageReader.cpp

@@ -0,0 +1,84 @@
+#include "../include/ImageReader.h"
+
+using namespace openshot;
+
+ImageReader::ImageReader(string path) throw(InvalidFile) : path(path)
+{
+	// Init FileInfo struct (clear all values)
+	InitFileInfo();
+
+	// Open the file (if possible)
+	Open();
+
+	// Get 1st frame
+	GetFrame(1);
+}
+
+// Open image file
+void ImageReader::Open()
+{
+	// Attempt to open file
+	Magick::Image* source = NULL;
+	try
+	{
+		// load image
+		source = new Magick::Image(path);
+	}
+	catch (Magick::Exception e) {
+		// raise exception
+		throw InvalidFile("File could not be opened.", path);
+	}
+
+	// Create or get frame object
+	image_frame = new Frame(1, source->size().width(), source->size().height(), "#000000", 0, 2);
+
+	// Add Image data to frame
+	image_frame->AddImage(source);
+
+
+	// Update image properties
+	info.has_audio = false;
+	info.has_video = true;
+	info.file_size = source->fileSize();
+	info.vcodec = source->format();
+	info.width = source->size().width();
+	info.height = source->size().height();
+	info.pixel_ratio.num = 1;
+	info.pixel_ratio.den = 1;
+	info.duration = 60 * 60 * 24; // 24 hour duration
+	info.fps.num = 30;
+	info.fps.den = 1;
+	info.video_timebase.num = 1;
+	info.video_timebase.den = 30;
+	info.video_length = round(info.duration * info.fps.ToDouble());
+
+	// Calculate the DAR (display aspect ratio)
+	Fraction size(info.width * info.pixel_ratio.num, info.height * info.pixel_ratio.den);
+
+	// Reduce size fraction
+	size.Reduce();
+
+	// Set the ratio based on the reduced fraction
+	info.display_ratio.num = size.num;
+	info.display_ratio.den = size.den;
+}
+
+// Close image file
+void ImageReader::Close()
+{
+	// Deallocate frame
+	delete image_frame;
+}
+
+// Get an openshot::Frame object for a specific frame number of this reader.
+Frame* ImageReader::GetFrame(int requested_frame) throw(InvalidFile)
+{
+	if (image_frame)
+		// Always return same frame (regardless of which frame number was requested)
+		return image_frame;
+	else
+		// no frame loaded
+		throw InvalidFile("No frame could be created from this type of file.", path);
+}
+
+