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716ce72e46
Store the MXF metadata in a hash table, keyed by the instance UID. This simplifies resolval of the metadata and makes looping over all metadata sets unnecessary in most cases. Additionally parse metadata always. If we already have a metadata set with the same UID replace it only if the new metadata set is from a later offset. This fixes metadata parsing of files where following partitions don't have a complete copy of the previous metadata.
105 lines
4.4 KiB
C
105 lines
4.4 KiB
C
/* GStreamer
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* Copyright (C) 2008-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Handling of the basic MXF types */
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#ifndef __MXF_PARSE_H__
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#define __MXF_PARSE_H__
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#include <string.h>
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#include "mxftypes.h"
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#include "mxfmetadata.h"
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typedef GstFlowReturn (*MXFEssenceElementHandleFunc) (const MXFUL *key, GstBuffer *buffer, GstCaps *caps, MXFMetadataTimelineTrack *track, MXFMetadataSourceClip *component, gpointer mapping_data, GstBuffer **outbuf);
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typedef struct {
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gboolean (*handles_track) (const MXFMetadataTimelineTrack *track);
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GstCaps * (*create_caps) (MXFMetadataTimelineTrack *track, GstTagList **tags, MXFEssenceElementHandleFunc *handler, gpointer *mapping_data);
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} MXFEssenceElementHandler;
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gchar * mxf_ul_to_string (const MXFUL *ul, gchar str[48]);
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gboolean mxf_ul_is_equal (const MXFUL *a, const MXFUL *b);
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gboolean mxf_ul_is_zero (const MXFUL *ul);
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guint mxf_ul_hash (const MXFUL *ul);
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gchar *mxf_umid_to_string (const MXFUMID * umid, gchar str[96]);
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MXFUMID *mxf_umid_from_string (const gchar *str, MXFUMID * umid);
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gboolean mxf_umid_is_equal (const MXFUMID *a, const MXFUMID *b);
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gboolean mxf_umid_is_zero (const MXFUMID *umid);
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gboolean mxf_is_mxf_packet (const MXFUL *key);
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gboolean mxf_is_partition_pack (const MXFUL *key);
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gboolean mxf_is_header_partition_pack (const MXFUL *key);
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gboolean mxf_is_body_partition_pack (const MXFUL *key);
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gboolean mxf_is_footer_partition_pack (const MXFUL *key);
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gboolean mxf_is_primer_pack (const MXFUL *key);
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gboolean mxf_is_metadata (const MXFUL *key);
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gboolean mxf_is_descriptive_metadata (const MXFUL *key);
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gboolean mxf_is_random_index_pack (const MXFUL *key);
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gboolean mxf_is_index_table_segment (const MXFUL *key);
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gboolean mxf_is_generic_container_system_item (const MXFUL *key);
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gboolean mxf_is_generic_container_essence_element (const MXFUL *key);
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gboolean mxf_is_generic_container_essence_container_label (const MXFUL *key);
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gboolean mxf_is_fill (const MXFUL *key);
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gchar * mxf_utf16_to_utf8 (const guint8 * data, guint size);
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gboolean mxf_product_version_parse (MXFProductVersion * product_version,
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const guint8 * data, guint size);
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gboolean mxf_fraction_parse (MXFFraction *fraction, const guint8 *data, guint size);
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gboolean mxf_timestamp_parse (MXFTimestamp * timestamp, const guint8 * data, guint size);
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gboolean mxf_timestamp_is_unknown (const MXFTimestamp *a);
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gint mxf_timestamp_compare (const MXFTimestamp *a, const MXFTimestamp *b);
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gboolean mxf_ul_array_parse (MXFUL **array, guint32 *count, const guint8 *data, guint size);
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gboolean mxf_partition_pack_parse (const MXFUL *key, MXFPartitionPack *pack, const guint8 *data, guint size);
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void mxf_partition_pack_reset (MXFPartitionPack *pack);
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gboolean mxf_primer_pack_parse (const MXFUL *key, MXFPrimerPack *pack, const guint8 *data, guint size);
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void mxf_primer_pack_reset (MXFPrimerPack *pack);
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gboolean mxf_random_index_pack_parse (const MXFUL *key, const guint8 *data, guint size, GArray **array);
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gboolean mxf_index_table_segment_parse (const MXFUL *key, MXFIndexTableSegment *segment, const MXFPrimerPack *primer, const guint8 *data, guint size);
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void mxf_index_table_segment_reset (MXFIndexTableSegment *segment);
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gboolean mxf_local_tag_parse (const guint8 * data, guint size, guint16 * tag,
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guint16 * tag_size, const guint8 ** tag_data);
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void gst_mxf_local_tag_free (MXFLocalTag *tag);
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gboolean mxf_local_tag_add_to_hash_table (const MXFPrimerPack *primer,
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guint16 tag, const guint8 *tag_data, guint16 tag_size,
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GHashTable **hash_table);
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void mxf_essence_element_handler_register (const MXFEssenceElementHandler *handler);
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const MXFEssenceElementHandler * mxf_essence_element_handler_find (const MXFMetadataTimelineTrack *track);
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#endif /* __MXF_PARSE_H__ */
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