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127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_MPEG2DEC_H__
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#define __GST_MPEG2DEC_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideopool.h>
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#include <gst/video/gstvideometa.h>
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#include <mpeg2.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MPEG2DEC \
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(gst_mpeg2dec_get_type())
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#define GST_MPEG2DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEG2DEC,GstMpeg2dec))
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#define GST_MPEG2DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEG2DEC,GstMpeg2decClass))
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#define GST_IS_MPEG2DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEG2DEC))
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#define GST_IS_MPEG2DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEG2DEC))
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#define MPEG_TIME_TO_GST_TIME(time) ((time) == -1 ? -1 : ((time) * (GST_MSECOND/10)) / G_GINT64_CONSTANT(9))
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#define GST_TIME_TO_MPEG_TIME(time) ((time) == -1 ? -1 : ((time) * G_GINT64_CONSTANT(9)) / (GST_MSECOND/10))
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typedef struct _GstMpeg2dec GstMpeg2dec;
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typedef struct _GstMpeg2decClass GstMpeg2decClass;
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typedef enum
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{
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MPEG2DEC_DISC_NONE = 0,
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MPEG2DEC_DISC_NEW_PICTURE,
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MPEG2DEC_DISC_NEW_KEYFRAME
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} DiscontState;
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struct _GstMpeg2dec {
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GstElement element;
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/* pads */
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GstPad *sinkpad,
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*srcpad,
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*userdatapad;
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mpeg2dec_t *decoder;
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const mpeg2_info_t *info;
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gboolean closed;
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gboolean have_fbuf;
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/* buffer management */
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guint ip_framepos;
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GstVideoFrame ip_frame[4];
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GstVideoFrame b_frame;
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DiscontState discont_state;
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/* the timestamp of the next frame */
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GstClockTime next_time;
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GstSegment segment;
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/* whether we have a pixel aspect ratio from the sink caps */
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gboolean have_par;
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gint in_par_n;
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gint in_par_d;
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/* video state */
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GstVideoInfo vinfo;
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GstVideoInfo cinfo;
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gboolean need_cropping;
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gboolean has_cropping;
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gint64 frame_period;
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gboolean interlaced;
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GstBufferPool *pool;
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gint size;
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gint u_offs;
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gint v_offs;
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guint8 *dummybuf[4];
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guint64 offset;
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gboolean need_sequence;
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gint error_count;
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gboolean can_allocate_aligned;
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/* QoS stuff */ /* with LOCK*/
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gdouble proportion;
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GstClockTime earliest_time;
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guint64 processed;
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guint64 dropped;
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/* gather/decode queues for reverse playback */
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GList *gather;
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GList *decode;
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GList *queued;
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};
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struct _GstMpeg2decClass {
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GstElementClass parent_class;
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};
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GType gst_mpeg2dec_get_type(void);
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G_END_DECLS
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#endif /* __GST_MPEG2DEC_H__ */
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