2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
21 #ifndef __GST_QTDEMUX_H__
22 #define __GST_QTDEMUX_H__
25 #include <gst/base/gstadapter.h>
26 #include <gst/base/gstflowcombiner.h>
31 #define GST_TYPE_QTDEMUX \
32 (gst_qtdemux_get_type())
33 #define GST_QTDEMUX(obj) \
34 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QTDEMUX,GstQTDemux))
35 #define GST_QTDEMUX_CLASS(klass) \
36 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QTDEMUX,GstQTDemuxClass))
37 #define GST_IS_QTDEMUX(obj) \
38 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QTDEMUX))
39 #define GST_IS_QTDEMUX_CLASS(klass) \
40 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QTDEMUX))
42 #define GST_QTDEMUX_CAST(obj) ((GstQTDemux *)(obj))
44 /* qtdemux produces these for atoms it cannot parse */
45 #define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
46 #define GST_QT_DEMUX_CLASSIFICATION_TAG "classification"
48 #define GST_QTDEMUX_MAX_STREAMS 32
50 typedef struct _GstQTDemux GstQTDemux;
51 typedef struct _GstQTDemuxClass GstQTDemuxClass;
52 typedef struct _QtDemuxStream QtDemuxStream;
56 QTDEMUX_STATE_INITIAL, /* Initial state (haven't got the header yet) */
57 QTDEMUX_STATE_HEADER, /* Parsing the header */
58 QTDEMUX_STATE_MOVIE, /* Parsing/Playing the media data */
59 QTDEMUX_STATE_BUFFER_MDAT /* Buffering the mdat atom */
66 enum QtDemuxState state;
71 /* TRUE if pull-based */
74 gboolean posted_redirect;
76 QtDemuxStream *streams[GST_QTDEMUX_MAX_STREAMS];
82 GstFlowCombiner *flowcombiner;
84 /* Incoming stream group-id to set on downstream STREAM_START events.
85 * If upstream doesn't contain one, a global one will be generated */
86 gboolean have_group_id;
90 GstBuffer *comp_brands;
93 * FIXME : This is discarded just after it's created. Just move it
94 * to a temporary variable ? */
97 /* FIXME : This is never freed. It is only assigned once. memleak ? */
98 GNode *moov_node_compressed;
100 /* Set to TRUE when the [moov] header has been fully parsed */
103 /* Global timescale for the incoming stream. Use the QTTIME macros
104 * to convert values to/from GstClockTime */
107 /* Global duration (in global timescale). Use QTTIME macros to get GstClockTime */
110 /* Total size of header atoms. Used to calculate fallback overall bitrate */
113 GstTagList *tag_list;
115 /* configured playback region */
118 /* The SEGMENT_EVENT from upstream *OR* generated from segment (above) */
119 GstEvent *pending_newsegment;
121 guint32 segment_seqnum;
123 /* flag to indicate that we're working with a smoothstreaming fragment
124 * Mss doesn't have 'moov' or any information about the streams format,
125 * requiring qtdemux to expose and create the streams */
128 /* Set to TRUE if the incoming stream is either a MSS stream or
129 * a Fragmented MP4 (containing the [mvex] atom in the header) */
132 /* PULL-BASED only : If TRUE there is a pending seek */
133 gboolean fragmented_seek_pending;
135 /* PULL-BASED : offset of first [moof] or of fragment to seek to
136 * PUSH-BASED : offset of latest [moof] */
139 /* MSS streams have a single media that is unspecified at the atoms, so
140 * upstream provides it at the caps */
143 /* Set to TRUE when all streams have been exposed */
146 gint64 chapters_track_id;
148 /* protection support */
149 GPtrArray *protection_system_ids; /* Holds identifiers of all content protection systems for all tracks */
150 GQueue protection_event_queue; /* holds copy of upstream protection events */
151 guint64 cenc_aux_info_offset;
152 guint8 *cenc_aux_info_sizes;
153 guint32 cenc_aux_sample_count;
157 * ALL VARIABLES BELOW ARE ONLY USED IN PUSH-BASED MODE
162 /* Used to store data if [mdat] is before the headers */
163 GstBuffer *mdatbuffer;
164 /* Amount of bytes left to read in the current [mdat] */
165 guint64 mdatleft, mdatsize;
167 /* When restoring the mdat to the adapter, this buffer stores any
168 * trailing data that was after the last atom parsed as it has to be
169 * restored later along with the correct offset. Used in fragmented
170 * scenario where mdat/moof are one after the other in any order.
172 * Check https://bugzilla.gnome.org/show_bug.cgi?id=710623 */
173 GstBuffer *restoredata_buffer;
174 guint64 restoredata_offset;
176 /* The current offset in bytes from upstream.
177 * Note: While it makes complete sense when we are PULL-BASED (pulling
178 * in BYTES from upstream) and PUSH-BASED with a BYTE SEGMENT (receiving
179 * buffers with actual offsets), it is undefined in PUSH-BASED with a
183 /* offset of the mdat atom */
185 /* Offset of the first mdat */
187 /* offset of last [moov] seen */
188 guint64 last_moov_offset;
190 /* If TRUE, qtdemux received upstream newsegment in TIME format
191 * which likely means that upstream is driving the pipeline (such as
192 * adaptive demuxers or dlna sources) */
193 gboolean upstream_format_is_time;
195 /* Seqnum of the seek event sent upstream. Will be used to
196 * detect incoming FLUSH events corresponding to that */
197 guint32 offset_seek_seqnum;
199 /* UPSTREAM BYTE: Requested upstream byte seek offset.
200 * Currently it is only used to check if an incoming BYTE SEGMENT
201 * corresponds to a seek event that was sent upstream */
204 /* UPSTREAM BYTE: Requested start/stop TIME values from
206 * Used to set on the downstream segment once the corresponding upstream
207 * BYTE SEEK has succeeded */
208 gint64 push_seek_start;
209 gint64 push_seek_stop;
212 /* gst index support */
213 GstIndex *element_index;
217 /* Whether upstream is seekable in BYTES */
218 gboolean upstream_seekable;
219 /* UPSTREAM BYTE: Size of upstream content.
220 * Note : This is only computed once ! If upstream grows in the meantime
221 * it will not be updated */
222 gint64 upstream_size;
224 /* UPSTREAM TIME : Contains the PTS (if any) of the
225 * buffer that contains a [moof] header. Will be used to establish
226 * the actual PTS of the samples contained within that fragment. */
227 guint64 fragment_start;
228 /* UPSTREAM TIME : The offset in bytes of the [moof]
230 * Note : This is not computed from the GST_BUFFER_OFFSET field */
231 guint64 fragment_start_offset;
234 struct _GstQTDemuxClass {
235 GstElementClass parent_class;
238 GType gst_qtdemux_get_type (void);
242 #endif /* __GST_QTDEMUX_H__ */