gstreamer/gst/videoparsers/gstmpegvideoparse.h
Jan Schmidt c5c44628fc mpegvideoparse: Handle Sequence Display Extension
Change the way the pixel-aspect-ratio is computed by
interpreting the sequence header aspect ratio info
as MPEG-1 values until a sequence extension or
sequence display extension is seen, and then updating
the sequence header struct accordingly.

Fixes incorrect anamorphic display on some MPEG-2 (DVD)
sequences.
2012-09-12 23:05:47 -07:00

96 lines
3 KiB
C

/* GStreamer
* Copyright (C) <2007> Jan Schmidt <thaytan@mad.scientist.com>
* Copyright (C) <2011> Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
* Copyright (C) <2011> Collabora ltd
* Copyright (C) <2011> Nokia Corporation
* Copyright (C) <2011> Intel Corporation
*
* 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_MPEGVIDEO_PARSE_H__
#define __GST_MPEGVIDEO_PARSE_H__
#include <gst/gst.h>
#include <gst/base/gstbaseparse.h>
#include <gst/codecparsers/gstmpegvideoparser.h>
G_BEGIN_DECLS
#define GST_TYPE_MPEGVIDEO_PARSE (gst_mpegv_parse_get_type())
#define GST_MPEGVIDEO_PARSE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
GST_TYPE_MPEGVIDEO_PARSE, GstMpegvParse))
#define GST_MPEGVIDEO_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),\
GST_TYPE_MPEGVIDEO_PARSE, GstMpegvParseClass))
#define GST_MPEGVIDEO_PARSE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
GST_TYPE_MPEGVIDEO_PARSE, GstMpegvParseClass))
#define GST_IS_MPEGVIDEO_PARSE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
GST_TYPE_MPEGVIDEO_PARSE))
#define GST_IS_MPEGVIDEO_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),\
GST_TYPE_MPEGVIDEO_PARSE))
typedef struct _GstMpegvParse GstMpegvParse;
typedef struct _GstMpegvParseClass GstMpegvParseClass;
/* Config/sequence flags. Reset each time config is re-parsed */
enum {
FLAG_NONE = 0,
FLAG_MPEG2 = 1,
FLAG_SEQUENCE_EXT = 2,
FLAG_SEQUENCE_DISPLAY_EXT = 4
};
struct _GstMpegvParse {
GstBaseParse element;
/* parse state */
gint ext_offsets[10];
gint ext_count;
gint last_sc;
gint seq_offset;
gint seq_size;
gint pic_offset;
gboolean update_caps;
gboolean send_codec_tag;
GstBuffer *config;
guint8 profile;
guint config_flags;
GstMpegVideoSequenceHdr sequencehdr;
GstMpegVideoSequenceExt sequenceext;
GstMpegVideoSequenceDisplayExt sequencedispext;
GstMpegVideoPictureHdr pichdr;
/* properties */
gboolean drop;
gboolean gop_split;
int fps_num;
int fps_den;
int frame_repeat_count;
};
struct _GstMpegvParseClass {
GstBaseParseClass parent_class;
};
GType gst_mpegv_parse_get_type (void);
G_END_DECLS
#endif /* __GST_MPEGVIDEO_PARSE_H__ */