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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
*
* 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_AVI_DEMUX_H__
#define __GST_AVI_DEMUX_H__
#include <gst/gst.h>
#include "avi-ids.h"
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-read.h"
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
#define GST_TYPE_AVI_DEMUX \
(gst_avi_demux_get_type ())
#define GST_AVI_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AVI_DEMUX, GstAviDemux))
#define GST_AVI_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AVI_DEMUX, GstAviDemuxClass))
#define GST_IS_AVI_DEMUX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AVI_DEMUX))
#define GST_IS_AVI_DEMUX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AVI_DEMUX))
#define GST_AVI_DEMUX_MAX_STREAMS 16
#define CHUNKID_TO_STREAMNR(chunkid) \
((((chunkid) & 0xff) - '0') * 10 + \
(((chunkid) >> 8) & 0xff) - '0')
#define GST_AVI_INDEX_ENTRY_FLAG_KEYFRAME 1
/* 48 bytes */
typedef struct {
guint index_nr; /* = (entry-index_entries)/sizeof(gst_avi_index_entry); */
guchar stream_nr;
guchar flags;
guint64 ts;
guint64 dur; /* =entry[1].ts-entry->ts */
guint64 offset;
guint64 bytes_before; /* calculated */
guint32 frames_before; /* calculated */
guint32 size; /* could be read from the chunk (if we don't split) */
} gst_avi_index_entry;
typedef struct {
/* index of this streamcontext */
guint num;
/* pad*/
GstPad *pad;
/* stream info and headers */
gst_riff_strh *strh;
union {
gst_riff_strf_vids *vids;
gst_riff_strf_auds *auds;
gst_riff_strf_iavs *iavs;
gpointer data;
} strf;
GstBuffer *extradata, *initdata;
gchar *name;
/* current position (byte, frame, time) and other status vars */
guint current_frame;
guint64 current_byte;
GstFlowReturn last_flow;
gboolean discont;
/* stream length */
guint64 total_bytes;
guint32 total_frames;
guint32 total_blocks;
/* stream length according to index */
GstClockTime idx_duration;
/* stream length according to header */
GstClockTime hdr_duration;
/* stream length based on header/index */
GstClockTime duration;
/* VBR indicator */
gboolean is_vbr;
/* openDML support (for files >4GB) */
gboolean superindex;
guint64 *indexes;
GstTagList *taglist;
} avi_stream_context;
typedef enum {
GST_AVI_DEMUX_START,
GST_AVI_DEMUX_HEADER,
GST_AVI_DEMUX_MOVI,
} GstAviDemuxState;
typedef enum {
GST_AVI_DEMUX_HEADER_TAG_LIST,
GST_AVI_DEMUX_HEADER_AVIH,
GST_AVI_DEMUX_HEADER_ELEMENTS,
GST_AVI_DEMUX_HEADER_INFO,
GST_AVI_DEMUX_HEADER_JUNK,
GST_AVI_DEMUX_HEADER_DATA
} GstAviDemuxHeaderState;
typedef struct _GstAviDemux {
GstElement parent;
/* pads */
GstPad *sinkpad;
/* AVI decoding state */
GstAviDemuxState state;
GstAviDemuxHeaderState header_state;
guint64 offset;
/* index */
gst_avi_index_entry *index_entries;
guint index_size;
guint64 index_offset;
guint current_entry;
guint reverse_start_index;
guint reverse_stop_index;
/* streams */
guint num_streams;
guint num_v_streams;
guint num_a_streams;
guint num_t_streams; /* subtitle text streams */
avi_stream_context stream[GST_AVI_DEMUX_MAX_STREAMS];
/* for streaming mode */
gboolean streaming;
gboolean have_eos;
GstAdapter *adapter;
/* some stream info for length */
gst_riff_avih *avih;
/* segment in TIME */
GstSegment segment;
gboolean segment_running;
/* pending tags/events */
GstEvent *seek_event;
GstTagList *globaltags;
gboolean got_tags;
} GstAviDemux;
typedef struct _GstAviDemuxClass {
GstElementClass parent_class;
} GstAviDemuxClass;
GType gst_avi_demux_get_type (void);
G_END_DECLS
#endif /* __GST_AVI_DEMUX_H__ */
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