#include <gst/gst.h>
#include <gst/base/gstadapter.h>
+#include <gst/base/gstflowcombiner.h>
+#include "gstisoff.h"
G_BEGIN_DECLS
-GST_DEBUG_CATEGORY_EXTERN (qtdemux_debug);
-#define GST_CAT_DEFAULT qtdemux_debug
-
#define GST_TYPE_QTDEMUX \
(gst_qtdemux_get_type())
#define GST_QTDEMUX(obj) \
#define GST_QT_DEMUX_PRIVATE_TAG "private-qt-tag"
#define GST_QT_DEMUX_CLASSIFICATION_TAG "classification"
-#define GST_QTDEMUX_MAX_STREAMS 32
-
typedef struct _GstQTDemux GstQTDemux;
typedef struct _GstQTDemuxClass GstQTDemuxClass;
typedef struct _QtDemuxStream QtDemuxStream;
+enum QtDemuxState
+{
+ QTDEMUX_STATE_INITIAL, /* Initial state (haven't got the header yet) */
+ QTDEMUX_STATE_HEADER, /* Parsing the header */
+ QTDEMUX_STATE_MOVIE, /* Parsing/Playing the media data */
+ QTDEMUX_STATE_BUFFER_MDAT /* Buffering the mdat atom */
+};
+
struct _GstQTDemux {
GstElement element;
- /* pads */
+ /* Global state */
+ enum QtDemuxState state;
+
+ /* static sink pad */
GstPad *sinkpad;
- QtDemuxStream *streams[GST_QTDEMUX_MAX_STREAMS];
- gint n_streams;
+ /* TRUE if pull-based */
+ gboolean pullbased;
+
+ gboolean posted_redirect;
+
+ /* Protect pad exposing from flush event */
+ GMutex expose_lock;
+
+ /* list of QtDemuxStream */
+ GPtrArray *active_streams;
+ GPtrArray *old_streams;
+
gint n_video_streams;
gint n_audio_streams;
gint n_sub_streams;
+ GstFlowCombiner *flowcombiner;
+
+ /* Incoming stream group-id to set on downstream STREAM_START events.
+ * If upstream doesn't contain one, a global one will be generated */
+ gboolean have_group_id;
+ guint group_id;
+
guint major_brand;
GstBuffer *comp_brands;
+
+ /* [moov] header.
+ * FIXME : This is discarded just after it's created. Just move it
+ * to a temporary variable ? */
GNode *moov_node;
+
+ /* FIXME : This is never freed. It is only assigned once. memleak ? */
GNode *moov_node_compressed;
+ /* Set to TRUE when the [moov] header has been fully parsed */
+ gboolean got_moov;
+
+ /* Global timescale for the incoming stream. Use the QTTIME macros
+ * to convert values to/from GstClockTime */
guint32 timescale;
+
+ /* Global duration (in global timescale). Use QTTIME macros to get GstClockTime */
guint64 duration;
+ /* Total size of header atoms. Used to calculate fallback overall bitrate */
+ guint header_size;
+
+ GstTagList *tag_list;
+
+ /* configured playback region */
+ GstSegment segment;
+
+ /* PUSH-BASED only: If the initial segment event, or a segment consequence of
+ * a seek or incoming TIME segment from upstream needs to be pushed. This
+ * variable is used instead of pushing the event directly because at that
+ * point we may not have yet emitted the srcpads. */
+ gboolean need_segment;
+
+ guint32 segment_seqnum;
+
+ /* flag to indicate that we're working with a smoothstreaming fragment
+ * Mss doesn't have 'moov' or any information about the streams format,
+ * requiring qtdemux to expose and create the streams */
+ gboolean mss_mode;
+
+ /* Set to TRUE if the incoming stream is either a MSS stream or
+ * a Fragmented MP4 (containing the [mvex] atom in the header) */
gboolean fragmented;
- /* offset of the mfra atom */
- guint64 mfra_offset;
+
+ /* PULL-BASED only : If TRUE there is a pending seek */
+ gboolean fragmented_seek_pending;
+
+ /* PULL-BASED : offset of first [moof] or of fragment to seek to
+ * PUSH-BASED : offset of latest [moof] */
guint64 moof_offset;
- gint state;
+ /* MSS streams have a single media that is unspecified at the atoms, so
+ * upstream provides it at the caps */
+ GstCaps *media_caps;
- gboolean pullbased;
- gboolean posted_redirect;
+ /* Set to TRUE when all streams have been exposed */
+ gboolean exposed;
+
+ gint64 chapters_track_id;
+
+ /* protection support */
+ GPtrArray *protection_system_ids; /* Holds identifiers of all content protection systems for all tracks */
+ GQueue protection_event_queue; /* holds copy of upstream protection events */
+ guint64 cenc_aux_info_offset;
+ guint8 *cenc_aux_info_sizes;
+ guint32 cenc_aux_sample_count;
+ gchar *preferred_protection_system_id;
- /* push based variables */
+ /* Whether the parent bin is streams-aware, meaning we can
+ * add/remove streams at any point in time */
+ gboolean streams_aware;
+
+ /*
+ * ALL VARIABLES BELOW ARE ONLY USED IN PUSH-BASED MODE
+ */
+ GstAdapter *adapter;
guint neededbytes;
guint todrop;
- GstAdapter *adapter;
+ /* Used to store data if [mdat] is before the headers */
GstBuffer *mdatbuffer;
- guint64 mdatleft;
+ /* Amount of bytes left to read in the current [mdat] */
+ guint64 mdatleft, mdatsize;
+ /* When restoring the mdat to the adapter, this buffer stores any
+ * trailing data that was after the last atom parsed as it has to be
+ * restored later along with the correct offset. Used in fragmented
+ * scenario where mdat/moof are one after the other in any order.
+ *
+ * Check https://bugzilla.gnome.org/show_bug.cgi?id=710623 */
+ GstBuffer *restoredata_buffer;
+ guint64 restoredata_offset;
+
+ /* The current offset in bytes from upstream.
+ * Note: While it makes complete sense when we are PULL-BASED (pulling
+ * in BYTES from upstream) and PUSH-BASED with a BYTE SEGMENT (receiving
+ * buffers with actual offsets), it is undefined in PUSH-BASED with a
+ * TIME SEGMENT */
guint64 offset;
+
/* offset of the mdat atom */
guint64 mdatoffset;
+ /* Offset of the first mdat */
guint64 first_mdat;
- gboolean got_moov;
- guint header_size;
+ /* offset of last [moov] seen */
+ guint64 last_moov_offset;
- GstTagList *tag_list;
+ /* If TRUE, qtdemux received upstream newsegment in TIME format
+ * which likely means that upstream is driving the pipeline (such as
+ * adaptive demuxers or dlna sources) */
+ gboolean upstream_format_is_time;
- /* configured playback region */
- GstSegment segment;
- GstEvent *pending_newsegment;
+ /* Seqnum of the seek event sent upstream. Will be used to
+ * detect incoming FLUSH events corresponding to that */
+ guint32 offset_seek_seqnum;
+
+ /* UPSTREAM BYTE: Requested upstream byte seek offset.
+ * Currently it is only used to check if an incoming BYTE SEGMENT
+ * corresponds to a seek event that was sent upstream */
+ gint64 seek_offset;
+
+ /* UPSTREAM BYTE: Requested start/stop TIME values from
+ * downstream.
+ * Used to set on the downstream segment once the corresponding upstream
+ * BYTE SEEK has succeeded */
+ gint64 push_seek_start;
+ gint64 push_seek_stop;
#if 0
/* gst index support */
gint index_id;
#endif
- gint64 requested_seek_time;
- guint64 seek_offset;
-
+ /* Whether upstream is seekable in BYTES */
gboolean upstream_seekable;
+ /* UPSTREAM BYTE: Size of upstream content.
+ * Note : This is only computed once ! If upstream grows in the meantime
+ * it will not be updated */
gint64 upstream_size;
+
+ /* UPSTREAM TIME : Contains the PTS (if any) of the
+ * buffer that contains a [moof] header. Will be used to establish
+ * the actual PTS of the samples contained within that fragment. */
+ guint64 fragment_start;
+ /* UPSTREAM TIME : The offset in bytes of the [moof]
+ * header start.
+ * Note : This is not computed from the GST_BUFFER_OFFSET field */
+ guint64 fragment_start_offset;
+
+ /* These two fields are used to perform an implicit seek when a fragmented
+ * file whose first tfdt is not zero. This way if the first fragment starts
+ * at 1 hour, the user does not have to wait 1 hour or perform a manual seek
+ * for the image to move and the sound to play.
+ *
+ * This implicit seek is only done if the first parsed fragment has a non-zero
+ * decode base time and a seek has not been received previously, hence these
+ * fields. */
+ gboolean received_seek;
+ gboolean first_moof_already_parsed;
};
struct _GstQTDemuxClass {
projects / platform / upstream / gst-plugins-good.git / blobdiff