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129 lines
3 KiB
C
129 lines
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_AVI_DEMUX_H__
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#define __GST_AVI_DEMUX_H__
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#include <gst/gst.h>
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#include "gst/riff/riff-ids.h"
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#include "gst/riff/riff-read.h"
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G_BEGIN_DECLS
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#define GST_TYPE_AVI_DEMUX \
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(gst_avi_demux_get_type ())
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#define GST_AVI_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux))
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#define GST_AVI_DEMUX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemux))
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#define GST_IS_AVI_DEMUX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
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#define GST_IS_AVI_DEMUX_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX))
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#define GST_AVI_DEMUX_MAX_STREAMS 16
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#define CHUNKID_TO_STREAMNR(chunkid) \
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((((chunkid) & 0xff) - '0') * 10 + \
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(((chunkid) >> 8) & 0xff) - '0')
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typedef struct {
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gint index_nr;
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gint stream_nr;
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guint64 ts;
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guint32 flags;
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guint32 offset;
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gint size;
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guint64 bytes_before;
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guint32 frames_before;
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} gst_avi_index_entry;
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typedef struct {
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/* index of this streamcontext */
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guint num;
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/* pad, strh */
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GstPad *pad;
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GstCaps *caps;
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gst_riff_strh *strh;
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/* current position (byte, frame, time) */
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guint current_frame;
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guint64 current_byte;
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gint current_entry;
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/* delay in time (init_frames) */
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guint64 delay;
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/* stream length */
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guint64 total_bytes;
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guint32 total_frames;
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guint32 skip;
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} avi_stream_context;
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typedef enum {
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GST_AVI_DEMUX_START,
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GST_AVI_DEMUX_HEADER,
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GST_AVI_DEMUX_MOVI,
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} GstAviDemuxState;
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typedef struct _GstAviDemux {
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GstRiffRead parent;
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/* pads */
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GstPad *sinkpad;
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/* AVI decoding state */
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GstAviDemuxState state;
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guint level_up;
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/* index */
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gst_avi_index_entry *index_entries;
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guint index_size;
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guint64 index_offset;
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/* streams */
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guint num_streams;
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guint num_v_streams;
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guint num_a_streams;
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avi_stream_context stream[GST_AVI_DEMUX_MAX_STREAMS];
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/* some stream info for length */
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guint32 us_per_frame;
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guint32 num_frames;
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/* seeking */
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guint64 seek_offset;
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guint64 last_seek;
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/* info */
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GstCaps *streaminfo;
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} GstAviDemux;
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typedef struct _GstAviDemuxClass {
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GstRiffReadClass parent_class;
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} GstAviDemuxClass;
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GType gst_avi_demux_get_type (void);
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G_END_DECLS
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#endif /* __GST_AVI_DEMUX_H__ */
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