/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef __ASF_DEMUX_H__ #define __ASF_DEMUX_H__ #include #include #include "asfheaders.h" G_BEGIN_DECLS #define GST_TYPE_ASF_DEMUX \ (gst_asf_demux_get_type()) #define GST_ASF_DEMUX(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ASF_DEMUX,GstASFDemux)) #define GST_ASF_DEMUX_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ASF_DEMUX,GstASFDemuxClass)) #define GST_IS_ASF_DEMUX(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ASF_DEMUX)) #define GST_IS_ASF_DEMUX_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ASF_DEMUX)) GST_DEBUG_CATEGORY_EXTERN (asfdemux_dbg); #define GST_CAT_DEFAULT asfdemux_dbg typedef struct _GstASFDemux GstASFDemux; typedef struct _GstASFDemuxClass GstASFDemuxClass; typedef struct { guint32 packet; guint16 count; } AsfSimpleIndexEntry; typedef struct { AsfPayloadExtensionID id : 16; /* extension ID; the :16 makes sure the * struct gets packed into 4 bytes */ guint16 len; /* save this so we can skip unknown IDs */ } AsfPayloadExtension; typedef struct { gboolean valid; /* TRUE if structure is valid/filled */ GstClockTime start_time; GstClockTime end_time; GstClockTime avg_time_per_frame; guint32 data_bitrate; guint32 buffer_size; guint32 intial_buf_fullness; guint32 data_bitrate2; guint32 buffer_size2; guint32 intial_buf_fullness2; guint32 max_obj_size; guint32 flags; guint16 lang_idx; /* may be NULL if there are no extensions; otherwise, terminated by * an AsfPayloadExtension record with len 0 */ AsfPayloadExtension *payload_extensions; /* missing: stream names */ } AsfStreamExtProps; typedef struct { AsfStreamType type; gboolean active; /* if the stream has been activated (pad added) */ GstPad *pad; guint16 id; /* video-only */ gboolean is_video; gboolean fps_known; GstCaps *caps; GstTagList *pending_tags; gboolean discont; /* for new parsing code */ GstFlowReturn last_flow; /* last flow return */ GArray *payloads; /* pending payloads */ /* Video stream PAR & interlacing */ guint8 par_x; guint8 par_y; gboolean interlaced; /* extended stream properties (optional) */ AsfStreamExtProps ext_props; gboolean inspect_payload; } AsfStream; typedef enum { GST_ASF_DEMUX_STATE_HEADER, GST_ASF_DEMUX_STATE_DATA, GST_ASF_DEMUX_STATE_INDEX } GstASFDemuxState; #define GST_ASF_DEMUX_NUM_VIDEO_PADS 16 #define GST_ASF_DEMUX_NUM_AUDIO_PADS 32 #define GST_ASF_DEMUX_NUM_STREAMS 32 #define GST_ASF_DEMUX_NUM_STREAM_IDS 127 struct _GstASFDemux { GstElement element; GstPad *sinkpad; gboolean have_group_id; guint group_id; GstAdapter *adapter; GstTagList *taglist; GstASFDemuxState state; /* byte offset where the asf starts, which might not be zero on chained * asfs, index_offset and data_offset already are 'offseted' by base_offset */ guint64 base_offset; guint64 index_offset; /* byte offset where index might be, or 0 */ guint64 data_offset; /* byte offset where packets start */ guint64 data_size; /* total size of packet data in bytes, or 0 */ guint64 num_packets; /* total number of data packets, or 0 */ gint64 packet; /* current packet */ guint speed_packets; /* Known number of packets to get in one go*/ gchar **languages; guint num_languages; GstCaps *metadata; /* metadata, for delayed parsing; one * structure ('stream-N') per stream */ GstStructure *global_metadata; /* metadata which isn't specific to one stream */ GSList *ext_stream_props; /* for delayed processing (buffers) */ GSList *mut_ex_streams; /* mutually exclusive streams */ guint32 num_audio_streams; guint32 num_video_streams; guint32 num_streams; AsfStream stream[GST_ASF_DEMUX_NUM_STREAMS]; gboolean activated_streams; /* for chained asf handling, we need to hold the old asf streams until * we detect the new ones */ AsfStream old_stream[GST_ASF_DEMUX_NUM_STREAMS]; gboolean old_num_streams; GstClockTime first_ts; /* smallest timestamp found */ guint32 packet_size; guint32 timestamp; /* in milliseconds */ guint64 play_time; guint64 preroll; gboolean seekable; gboolean broadcast; GstSegment segment; /* configured play segment */ gboolean accurate; gboolean need_newsegment; /* do we need to send a new-segment event? */ guint32 segment_seqnum; /* if the new segment must have this seqnum */ GstClockTime segment_ts; /* streaming; timestamp for segment start */ GstSegment in_segment; /* streaming; upstream segment info */ GstClockTime in_gap; /* streaming; upstream initial segment gap for interpolation */ gboolean segment_running; /* if we've started the current segment */ gboolean streaming; /* TRUE if we are operating chain-based */ GstClockTime latency; /* Descrambler settings */ guint8 span; guint16 ds_packet_size; guint16 ds_chunk_size; guint16 ds_data_size; /* for debugging only */ gchar *objpath; /* simple index, if available */ GstClockTime sidx_interval; /* interval between entries in ns */ guint sidx_num_entries; /* number of index entries */ AsfSimpleIndexEntry *sidx_entries; /* packet number for each entry */ GSList *other_streams; /* remember streams that are in header but have unknown type */ }; struct _GstASFDemuxClass { GstElementClass parent_class; }; GType gst_asf_demux_get_type (void); AsfStream * gst_asf_demux_get_stream (GstASFDemux * demux, guint16 id); gboolean gst_asf_demux_is_unknown_stream(GstASFDemux *demux, guint stream_num); G_END_DECLS #endif /* __ASF_DEMUX_H__ */