ext/libpng/: Added png decoder.

Original commit message from CVS:
* ext/libpng/Makefile.am:
* ext/libpng/gstpng.c: (plugin_init):
* ext/libpng/gstpngdec.c: (user_error_fn), (user_warning_fn),
(gst_pngdec_get_type), (gst_pngdec_base_init),
(gst_pngdec_class_init), (gst_pngdec_sinklink), (gst_pngdec_init),
(gst_pngdec_src_getcaps), (user_read_data), (gst_pngdec_chain):
* ext/libpng/gstpngdec.h:
Added png decoder.

1 files changed, 74 insertions, 0 deletions

diff --git a/ext/libpng/gstpngdec.h b/ext/libpng/gstpngdec.h
new file mode 100644
index 00000000..1068c260
--- /dev/null
+++ b/ext/libpng/gstpngdec.h
@@ -0,0 +1,74 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_PNGDEC_H__
+#define __GST_PNGDEC_H__
+
+#include <gst/gst.h>
+#include <png.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define GST_TYPE_PNGDEC  	(gst_pngdec_get_type())
+#define GST_PNGDEC(obj)  	(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PNGDEC,GstPngDec))
+#define GST_PNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PNGDEC,GstPngDec))
+#define GST_IS_PNGDEC(obj) 	(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PNGDEC))
+#define GST_IS_PNGDEC_CLASS(obj)(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PNGDEC))
+
+typedef struct _GstPngDec GstPngDec;
+typedef struct _GstPngDecClass GstPngDecClass;
+
+struct _GstPngDec
+{
+  GstElement element;
+
+  GstPad *sinkpad, *srcpad;
+
+  GstBuffer *buffer_in;
+  gint offset;
+
+  png_structp png;
+  png_infop info;
+  png_infop endinfo;
+
+  gint width;
+  gint height;
+  gint bpp;
+  gint color_type;
+  gdouble fps;
+};
+
+struct _GstPngDecClass
+{
+  GstElementClass parent_class;
+};
+
+GType gst_pngdec_get_type(void);
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+
+#endif /* __GST_PNGDEC_H__ */