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authorTavian Barnes <tavianator@tavianator.com>2014-08-19 17:10:03 -0400
committerTavian Barnes <tavianator@tavianator.com>2015-10-25 11:03:56 -0400
commit7b09710392d35fb55b52031d447a542d99fc6b4b (patch)
tree270eb927ee8c52ceeb99926ebf4843704775a610 /libdimension/dimension/canvas/png.h
parent200c86b91ea7063d35be3bffc11c5da53c054653 (diff)
downloaddimension-7b09710392d35fb55b52031d447a542d99fc6b4b.tar.xz
Modularize the libdimension codebase.
Diffstat (limited to 'libdimension/dimension/canvas/png.h')
-rw-r--r--libdimension/dimension/canvas/png.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/libdimension/dimension/canvas/png.h b/libdimension/dimension/canvas/png.h
new file mode 100644
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+++ b/libdimension/dimension/canvas/png.h
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+/*************************************************************************
+ * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com> *
+ * *
+ * This file is part of The Dimension Library. *
+ * *
+ * The Dimension Library is free software; you can redistribute it and/ *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version. *
+ * *
+ * The Dimension Library 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 *
+ * Lesser General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU Lesser General Public *
+ * License along with this program. If not, see *
+ * <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+/**
+ * @file
+ * PNG import/export of canvases.
+ */
+
+#ifndef DMNSN_CANVAS_H
+#error "Please include <dimension/canvas.h> instead of this header directly."
+#endif
+
+#include <stdio.h>
+
+/**
+ * Optimize a canvas for PNG exporting
+ * @param[in] pool The memory pool to allocate from.
+ * @param[in,out] canvas The canvas to optimize.
+ * @return Whether the canvas was successfully optimized.
+ */
+int dmnsn_png_optimize_canvas(dmnsn_pool *pool, dmnsn_canvas *canvas);
+
+/**
+ * Write a canvas to a file in PNG format.
+ * @param[in] canvas The canvas to write.
+ * @param[in,out] file The file to write to.
+ * @return 0 on success, non-zero on failure.
+ */
+int dmnsn_png_write_canvas(const dmnsn_canvas *canvas, FILE *file);
+
+/**
+ * Write a canvas to a PNG file in the background.
+ * @param[in] canvas The canvas to write.
+ * @param[in,out] file The file to write to.
+ * @return A \ref dmnsn_future object, or NULL on failure.
+ */
+dmnsn_future *dmnsn_png_write_canvas_async(const dmnsn_canvas *canvas,
+ FILE *file);
+
+/**
+ * Read a canvas from a PNG file.
+ * @param[in] pool The memory pool to allocate from.
+ * @param[in,out] file The PNG file to read.
+ * @return The new canvas, or NULL on failure.
+ */
+dmnsn_canvas *dmnsn_png_read_canvas(dmnsn_pool *pool, FILE *file);
+
+/**
+ * Read a canvas from a PNG file in the background.
+ * @param[out] canvas The address of a non-allocated canvas object. The canvas
+ * object will be allocated and filled with the contents of
+ * \p file. Do not read from this object until the
+ * background task has finished.
+ * @param[in] pool The memory pool to allocate from.
+ * @param[in,out] file The PNG file to read.
+ * @return A \ref dmnsn_future object, or NULL on failure.
+ */
+dmnsn_future *dmnsn_png_read_canvas_async(dmnsn_canvas **canvas, dmnsn_pool *pool, FILE *file);