Basic if sketchy support for image sequences.

1 files changed, 85 insertions, 0 deletions

diff --git a/src/lib/moving_image_decoder.cc b/src/lib/moving_image_decoder.cc
new file mode 100644
index 000000000..096096063
--- /dev/null
+++ b/src/lib/moving_image_decoder.cc
@@ -0,0 +1,85 @@
+/*
+    Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+#include <Magick++.h>
+#include "moving_image_content.h"
+#include "moving_image_decoder.h"
+#include "image.h"
+#include "film.h"
+#include "exceptions.h"
+
+#include "i18n.h"
+
+using std::cout;
+using boost::shared_ptr;
+using libdcp::Size;
+
+MovingImageDecoder::MovingImageDecoder (shared_ptr<const Film> f, shared_ptr<const MovingImageContent> c)
+	: Decoder (f)
+	, VideoDecoder (f, c)
+	, MovingImage (c)
+{
+
+}
+
+void
+MovingImageDecoder::pass ()
+{
+	if (_video_position >= _moving_image_content->video_length ()) {
+		return;
+	}
+
+	boost::filesystem::path path = _moving_image_content->path ();
+	path /= _moving_image_content->files()[_video_position];
+
+	Magick::Image* magick_image = new Magick::Image (path.string());
+	libdcp::Size size (magick_image->columns(), magick_image->rows());
+
+	shared_ptr<Image> image (new Image (PIX_FMT_RGB24, size, false));
+
+	using namespace MagickCore;
+	
+	uint8_t* p = image->data()[0];
+	for (int y = 0; y < size.height; ++y) {
+		for (int x = 0; x < size.width; ++x) {
+			Magick::Color c = magick_image->pixelColor (x, y);
+			*p++ = c.redQuantum() * 255 / QuantumRange;
+			*p++ = c.greenQuantum() * 255 / QuantumRange;
+			*p++ = c.blueQuantum() * 255 / QuantumRange;
+		}
+	}
+
+	delete magick_image;
+
+	video (image, false, _video_position);
+}
+
+void
+MovingImageDecoder::seek (VideoContent::Frame frame, bool)
+{
+	_video_position = frame;
+}
+
+bool
+MovingImageDecoder::done () const
+{
+	return _video_position >= _moving_image_content->video_length ();
+}