1 /* GStreamer
2  * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3  * Copyright (C) 2012 Collabora Ltd.
4  *	Author : Edward Hervey <edward@collabora.com>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public
17  * License along with this library; if not, write to the
18  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  */
21 
22 
23 #ifndef __GST_PNGDEC_H__
24 #define __GST_PNGDEC_H__
25 
26 #include <gst/gst.h>
27 #include <gst/video/gstvideodecoder.h>
28 #include <png.h>
29 
30 G_BEGIN_DECLS
31 
32 #define GST_TYPE_PNGDEC (gst_pngdec_get_type())
33 #define GST_PNGDEC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PNGDEC,GstPngDec))
34 #define GST_PNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PNGDEC,GstPngDecClass))
35 #define GST_IS_PNGDEC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PNGDEC))
36 #define GST_IS_PNGDEC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PNGDEC))
37 
38 typedef struct _GstPngDec GstPngDec;
39 typedef struct _GstPngDecClass GstPngDecClass;
40 
41 struct _GstPngDec
42 {
43   GstVideoDecoder parent;
44 
45   GstVideoCodecState *input_state;
46   GstVideoCodecState *output_state;
47   GstMapInfo current_frame_map;
48   GstVideoCodecFrame *current_frame;
49 
50   GstFlowReturn ret;
51 
52   png_structp png;
53   png_infop info;
54   png_infop endinfo;
55 
56   gint color_type;
57 
58   gboolean image_ready;
59   gsize read_data;
60 };
61 
62 struct _GstPngDecClass
63 {
64   GstVideoDecoderClass parent_class;
65 };
66 
67 GType gst_pngdec_get_type(void);
68 
69 G_END_DECLS
70 
71 #endif /* __GST_PNGDEC_H__ */
72