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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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212 lines
5.6 KiB
C
212 lines
5.6 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>)
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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 "avi-ids.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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#include <gst/base/gstadapter.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, GstAviDemuxClass))
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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(klass) \
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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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/* new index entries 24 bytes */
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typedef struct {
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guint32 flags;
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guint32 size; /* bytes of the data */
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guint64 offset; /* data offset in file */
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guint64 total; /* total bytes before */
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} GstAviIndexEntry;
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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*/
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GstPad *pad;
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gboolean exposed;
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/* stream info and headers */
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gst_riff_strh *strh;
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union {
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gst_riff_strf_vids *vids;
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gst_riff_strf_auds *auds;
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gst_riff_strf_iavs *iavs;
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gpointer data;
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} strf;
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GstBuffer *extradata, *initdata;
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GstBuffer *rgb8_palette;
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gchar *name;
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/* the start/step/stop entries */
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guint start_entry;
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guint step_entry;
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guint stop_entry;
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/* current index entry */
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guint current_entry;
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/* position (byte, frame, time) for current_entry */
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guint current_total;
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GstClockTime current_timestamp;
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GstClockTime current_ts_end;
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guint64 current_offset;
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guint64 current_offset_end;
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GstFlowReturn last_flow;
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gboolean discont;
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/* stream length */
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guint64 total_bytes;
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guint32 total_blocks;
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guint n_keyframes;
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/* stream length according to index */
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GstClockTime idx_duration;
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/* stream length according to header */
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GstClockTime hdr_duration;
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/* stream length based on header/index */
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GstClockTime duration;
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/* VBR indicator */
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gboolean is_vbr;
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/* openDML support (for files >4GB) */
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gboolean superindex;
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guint64 *indexes;
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/* new indexes */
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GstAviIndexEntry *index; /* array with index entries */
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guint idx_n; /* number of entries */
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guint idx_max; /* max allocated size of entries */
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GstTagList *taglist;
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gint index_id;
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} GstAviStream;
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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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GST_AVI_DEMUX_SEEK,
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} GstAviDemuxState;
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typedef enum {
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GST_AVI_DEMUX_HEADER_TAG_LIST,
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GST_AVI_DEMUX_HEADER_AVIH,
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GST_AVI_DEMUX_HEADER_ELEMENTS,
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GST_AVI_DEMUX_HEADER_INFO,
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GST_AVI_DEMUX_HEADER_JUNK,
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GST_AVI_DEMUX_HEADER_DATA
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} GstAviDemuxHeaderState;
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typedef struct _GstAviDemux {
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GstElement 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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GstAviDemuxHeaderState header_state;
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guint64 offset;
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gboolean abort_buffering;
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/* when we loaded the indexes */
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gboolean have_index;
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/* index offset in the file */
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guint64 index_offset;
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/* streams */
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GstAviStream stream[GST_AVI_DEMUX_MAX_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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guint num_t_streams; /* subtitle text streams */
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guint main_stream; /* used for seeking */
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/* for streaming mode */
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gboolean streaming;
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gboolean have_eos;
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GstAdapter *adapter;
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guint todrop;
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/* some stream info for length */
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gst_riff_avih *avih;
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GstClockTime duration;
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/* segment in TIME */
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GstSegment segment;
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/* pending tags/events */
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GstEvent *seg_event;
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GstTagList *globaltags;
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gboolean got_tags;
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#if 0
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/* gst index support */
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GstIndex *element_index;
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gint index_id;
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#endif
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gboolean seekable;
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guint64 first_movi_offset;
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guint64 idx1_offset; /* offset in file of list/chunk after movi */
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GstEvent *seek_event;
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gboolean building_index;
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guint odml_stream;
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guint odml_subidx;
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guint64 *odml_subidxs;
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guint64 seek_kf_offset; /* offset of the keyframe to which we want to seek */
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} GstAviDemux;
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typedef struct _GstAviDemuxClass {
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GstElementClass 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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