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/* 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_MPEG2DEC_H__
#define __GST_MPEG2DEC_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideopool.h>
#include <gst/video/gstvideometa.h>
#include <mpeg2.h>
G_BEGIN_DECLS
#define GST_TYPE_MPEG2DEC \
(gst_mpeg2dec_get_type())
#define GST_MPEG2DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG2DEC,GstMpeg2dec))
#define GST_MPEG2DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG2DEC,GstMpeg2decClass))
#define GST_IS_MPEG2DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG2DEC))
#define GST_IS_MPEG2DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG2DEC))
#define MPEG_TIME_TO_GST_TIME(time) ((time) == -1 ? -1 : ((time) * (GST_MSECOND/10)) / G_GINT64_CONSTANT(9))
#define GST_TIME_TO_MPEG_TIME(time) ((time) == -1 ? -1 : ((time) * G_GINT64_CONSTANT(9)) / (GST_MSECOND/10))
typedef struct _GstMpeg2dec GstMpeg2dec;
typedef struct _GstMpeg2decClass GstMpeg2decClass;
typedef enum
{
MPEG2DEC_DISC_NONE = 0,
MPEG2DEC_DISC_NEW_PICTURE,
MPEG2DEC_DISC_NEW_KEYFRAME
} DiscontState;
struct _GstMpeg2dec {
GstElement element;
/* pads */
GstPad *sinkpad,
*srcpad,
*userdatapad;
mpeg2dec_t *decoder;
const mpeg2_info_t *info;
gboolean closed;
gboolean have_fbuf;
/* buffer management */
guint ip_framepos;
GstVideoFrame ip_frame[4];
GstVideoFrame b_frame;
DiscontState discont_state;
/* the timestamp of the next frame */
GstClockTime next_time;
GstSegment segment;
/* whether we have a pixel aspect ratio from the sink caps */
gboolean have_par;
gint in_par_n;
gint in_par_d;
/* video state */
GstVideoInfo vinfo;
GstVideoInfo cinfo;
gboolean need_cropping;
gboolean has_cropping;
gint64 frame_period;
gboolean interlaced;
GstBufferPool *pool;
gint size;
gint u_offs;
gint v_offs;
guint8 *dummybuf[4];
guint64 offset;
gboolean need_sequence;
gint error_count;
gboolean can_allocate_aligned;
/* QoS stuff */ /* with LOCK*/
gdouble proportion;
GstClockTime earliest_time;
guint64 processed;
guint64 dropped;
/* gather/decode queues for reverse playback */
GList *gather;
GList *decode;
GList *queued;
};
struct _GstMpeg2decClass {
GstElementClass parent_class;
};
GType gst_mpeg2dec_get_type(void);
G_END_DECLS
#endif /* __GST_MPEG2DEC_H__ */
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