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Original commit message from CVS: * gst/id3demux/gstid3demux.c: (plugin_init): * gst/id3demux/id3tags.c: (id3demux_add_id3v2_frame_blob_to_taglist): * gst/id3demux/id3tags.h: On second thought, it might be wiser and more efficient not to do tag registration from a streaming thread.
119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/* Copyright 2005 Jan Schmidt <thaytan@mad.scientist.com>
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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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#ifndef __ID3TAGS_H__
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#define __ID3TAGS_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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/* private tag for storing unprocessed ID3v2 frames */
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#define GST_ID3_DEMUX_TAG_ID3V2_FRAME "private-id3v2-frame"
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#define ID3V1_TAG_SIZE 128
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#define ID3V2_MARK_SIZE 3
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#define ID3V2_HDR_SIZE 10
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typedef enum {
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ID3TAGS_V1_BAD_SIZE,
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ID3TAGS_MORE_DATA,
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ID3TAGS_READ_TAG,
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ID3TAGS_BROKEN_TAG
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} ID3TagsResult;
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/* From id3tags.c */
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ID3TagsResult id3demux_read_id3v1_tag (GstBuffer *buffer, guint *id3v1_size,
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GstTagList **tags);
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ID3TagsResult id3demux_read_id3v2_tag (GstBuffer *buffer, guint *id3v2_size,
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GstTagList **tags);
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G_END_DECLS
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/* Things shared by id3tags.c and id3v2frames.c */
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#define ID3V2_VERSION 0x0400
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#define ID3V2_VER_MAJOR(v) ((v) >> 8)
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#define ID3V2_VER_MINOR(v) ((v) & 0xff)
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typedef struct {
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guint16 version;
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guint8 flags;
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guint32 size;
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guint8 *frame_data;
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guint32 frame_data_size;
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guint32 ext_hdr_size;
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guint8 ext_flag_bytes;
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guint8 *ext_flag_data;
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} ID3v2Header;
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typedef struct {
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ID3v2Header hdr;
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GstBuffer *buffer;
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GstTagList *tags;
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/* Current frame decoding */
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guint cur_frame_size;
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gchar *frame_id;
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guint16 frame_flags;
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guint8 *parse_data;
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guint parse_size;
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/* Previous genre string, for simple duplicate removal */
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gchar *prev_genre;
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} ID3TagsWorking;
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enum {
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ID3V2_HDR_FLAG_UNSYNC = 0x80,
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ID3V2_HDR_FLAG_EXTHDR = 0x40,
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ID3V2_HDR_FLAG_EXPERIMENTAL = 0x20,
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ID3V2_HDR_FLAG_FOOTER = 0x10
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};
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enum {
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ID3V2_EXT_FLAG_UPDATE = 0x80,
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ID3V2_EXT_FLAG_CRC = 0x40,
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ID3V2_EXT_FLAG_RESTRICTED = 0x20
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};
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enum {
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ID3V2_FRAME_STATUS_FRAME_ALTER_PRESERVE = 0x4000,
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ID3V2_FRAME_STATUS_FILE_ALTER_PRESERVE = 0x2000,
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ID3V2_FRAME_STATUS_READONLY = 0x1000,
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ID3V2_FRAME_FORMAT_GROUPING_ID = 0x0040,
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ID3V2_FRAME_FORMAT_COMPRESSION = 0x0008,
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ID3V2_FRAME_FORMAT_ENCRYPTION = 0x0004,
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ID3V2_FRAME_FORMAT_UNSYNCHRONISATION = 0x0002,
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ID3V2_FRAME_FORMAT_DATA_LENGTH_INDICATOR = 0x0001
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};
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#define ID3V2_3_FRAME_FLAGS_MASK \
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(ID3V2_FRAME_STATUS_FRAME_ALTER_PRESERVE | \
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ID3V2_FRAME_STATUS_FILE_ALTER_PRESERVE | \
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ID3V2_FRAME_STATUS_READONLY | \
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ID3V2_FRAME_FORMAT_GROUPING_ID | \
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ID3V2_FRAME_FORMAT_COMPRESSION | \
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ID3V2_FRAME_FORMAT_ENCRYPTION)
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/* From id3v2frames.c */
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gboolean id3demux_id3v2_parse_frame (ID3TagsWorking *work);
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#endif
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