use libpng, ... now we just have to make it faster

Signed-off-by: Mattias Andrée <maandree@member.fsf.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/png.h b/src/png.h
new file mode 100644
index 0000000..02a6223
--- /dev/null
+++ b/src/png.h
@@ -0,0 +1,29 @@
+/**
+ * scrotty — Screenshot program for Linux's TTY
+ * 
+ * Copyright © 2014, 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/**
+ * Convert an image from PNM to PNG.
+ * 
+ * @param   fdin   The file descriptor for the image to convert (PNM).
+ * @param   fdout  The file descriptor for the output image (PNG).
+ * @return         Zero on success, -1 on error.
+ */
+int convert (int fdin, int fdout);
+