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 GST_DEBUG_CATEGORY_EXTERN (qtdemux_debug);
32 #define GST_CAT_DEFAULT qtdemux_debug
34 #define GST_TYPE_QTDEMUX \
35 (gst_qtdemux_get_type())
36 #define GST_QTDEMUX(obj) \
37 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QTDEMUX,GstQTDemux))
38 #define GST_QTDEMUX_CLASS(klass) \
39 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QTDEMUX,GstQTDemuxClass))
40 #define GST_IS_QTDEMUX(obj) \
41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QTDEMUX))
42 #define GST_IS_QTDEMUX_CLASS(klass) \
43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QTDEMUX))
45 #define GST_QTDEMUX_CAST(obj) ((GstQTDemux *)(obj))
47 /* qtdemux produces these for atoms it cannot parse */
48 #define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
49 #define GST_QT_DEMUX_CLASSIFICATION_TAG "classification"
51 #define GST_QTDEMUX_MAX_STREAMS 32
53 typedef struct _GstQTDemux GstQTDemux;
54 typedef struct _GstQTDemuxClass GstQTDemuxClass;
55 typedef struct _QtDemuxStream QtDemuxStream;
61 enum QtDemuxState state;
66 /* TRUE if pull-based */
69 gboolean posted_redirect;
71 QtDemuxStream *streams[GST_QTDEMUX_MAX_STREAMS];
77 GstFlowCombiner *flowcombiner;
79 /* Incoming stream group-id to set on downstream STREAM_START events.
80 * If upstream doesn't contain one, a global one will be generated */
81 gboolean have_group_id;
85 GstBuffer *comp_brands;
88 * FIXME : This is discarded just after it's created. Just move it
89 * to a temporary variable ? */
92 /* FIXME : This is never freed. It is only assigned once. memleak ? */
93 GNode *moov_node_compressed;
95 /* Set to TRUE when the [moov] header has been fully parsed */
98 /* Global timescale for the incoming stream. Use the QTTIME macros
99 * to convert values to/from GstClockTime */
102 /* Global duration (in global timescale). Use QTTIME macros to get GstClockTime */
105 /* Total size of header atoms. Used to calculate fallback overall bitrate */
108 GstTagList *tag_list;
110 /* configured playback region */
113 /* The SEGMENT_EVENT from upstream *OR* generated from segment (above) */
114 GstEvent *pending_newsegment;
116 guint32 segment_seqnum;
118 /* flag to indicate that we're working with a smoothstreaming fragment
119 * Mss doesn't have 'moov' or any information about the streams format,
120 * requiring qtdemux to expose and create the streams */
123 /* Set to TRUE if the incoming stream is either a MSS stream or
124 * a Fragmented MP4 (containing the [mvex] atom in the header) */
127 /* PULL-BASED only : If TRUE there is a pending seek */
128 gboolean fragmented_seek_pending;
130 /* PULL-BASED : offset of first [moof] or of fragment to seek to
131 * PUSH-BASED : offset of latest [moof] */
134 /* MSS streams have a single media that is unspecified at the atoms, so
135 * upstream provides it at the caps */
138 /* Set to TRUE when all streams have been exposed */
141 gint64 chapters_track_id;
143 /* protection support */
144 GPtrArray *protection_system_ids; /* Holds identifiers of all content protection systems for all tracks */
145 GQueue protection_event_queue; /* holds copy of upstream protection events */
146 guint64 cenc_aux_info_offset;
147 guint8 *cenc_aux_info_sizes;
148 guint32 cenc_aux_sample_count;
152 * ALL VARIABLES BELOW ARE ONLY USED IN PUSH-BASED MODE
157 /* Used to store data if [mdat] is before the headers */
158 GstBuffer *mdatbuffer;
159 /* Amount of bytes left to read in the current [mdat] */
162 /* When restoring the mdat to the adapter, this buffer stores any
163 * trailing data that was after the last atom parsed as it has to be
164 * restored later along with the correct offset. Used in fragmented
165 * scenario where mdat/moof are one after the other in any order.
167 * Check https://bugzilla.gnome.org/show_bug.cgi?id=710623 */
168 GstBuffer *restoredata_buffer;
169 guint64 restoredata_offset;
171 /* The current offset in bytes from upstream.
172 * Note: While it makes complete sense when we are PULL-BASED (pulling
173 * in BYTES from upstream) and PUSH-BASED with a BYTE SEGMENT (receiving
174 * buffers with actual offsets), it is undefined in PUSH-BASED with a
178 /* offset of the mdat atom */
180 /* Offset of the first mdat */
182 /* offset of last [moov] seen */
183 guint64 last_moov_offset;
185 /* If TRUE, qtdemux received upstream newsegment in TIME format
186 * which likely means that upstream is driving the pipeline (such as
187 * adaptive demuxers or dlna sources) */
188 gboolean upstream_format_is_time;
190 /* Seqnum of the seek event sent upstream. Will be used to
191 * detect incoming FLUSH events corresponding to that */
192 guint32 offset_seek_seqnum;
194 /* UPSTREAM BYTE: Requested upstream byte seek offset.
195 * Currently it is only used to check if an incoming BYTE SEGMENT
196 * corresponds to a seek event that was sent upstream */
199 /* UPSTREAM BYTE: Requested start/stop TIME values from
201 * Used to set on the downstream segment once the corresponding upstream
202 * BYTE SEEK has succeeded */
203 gint64 push_seek_start;
204 gint64 push_seek_stop;
207 /* gst index support */
208 GstIndex *element_index;
212 /* Whether upstream is seekable in BYTES */
213 gboolean upstream_seekable;
214 /* UPSTREAM BYTE: Size of upstream content.
215 * Note : This is only computed once ! If upstream grows in the meantime
216 * it will not be updated */
217 gint64 upstream_size;
219 /* UPSTREAM TIME : Contains the PTS (if any) of the
220 * buffer that contains a [moof] header. Will be used to establish
221 * the actual PTS of the samples contained within that fragment. */
222 guint64 fragment_start;
223 /* UPSTREAM TIME : The offset in bytes of the [moof]
225 * Note : This is not computed from the GST_BUFFER_OFFSET field */
226 guint64 fragment_start_offset;
229 struct _GstQTDemuxClass {
230 GstElementClass parent_class;
233 GType gst_qtdemux_get_type (void);
237 #endif /* __GST_QTDEMUX_H__ */