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168 lines
5.9 KiB
C
168 lines
5.9 KiB
C
/* GStreamer
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* Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2005 Tim-Philipp Müller <tim centricular net>
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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 __GST_CDDA_BASE_SRC_H__
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#define __GST_CDDA_BASE_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/gstpushsrc.h>
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/* must include this for backwards-compatibility so the
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* GST_TAG_CDDA_* defines are included. Remove in 0.11 */
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#include <gst/tag/tag.h>
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G_BEGIN_DECLS
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#define GST_TYPE_CDDA_BASE_SRC (gst_cdda_base_src_get_type())
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#define GST_CDDA_BASE_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_CDDA_BASE_SRC, GstCddaBaseSrc))
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#define GST_CDDA_BASE_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_CDDA_BASE_SRC, GstCddaBaseSrcClass))
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#define GST_IS_CDDA_BASE_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_CDDA_BASE_SRC))
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#define GST_IS_CDDA_BASE_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_CDDA_BASE_SRC))
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#define GST_CDDA_BASE_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_CDDA_BASE_SRC, GstCddaBaseSrcClass))
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typedef struct _GstCddaBaseSrc GstCddaBaseSrc;
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typedef struct _GstCddaBaseSrcClass GstCddaBaseSrcClass;
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typedef struct _GstCddaBaseSrcTrack GstCddaBaseSrcTrack;
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/**
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* GstCddaBaseSrcMode:
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* @GST_CDDA_BASE_SRC_MODE_NORMAL : each single track is a stream
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* @GST_CDDA_BASE_SRC_MODE_CONTINUOUS : the entire disc is a single stream
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*
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* Mode in which the CD audio source operates. Influences timestamping,
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* EOS handling and seeking.
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*/
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typedef enum {
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GST_CDDA_BASE_SRC_MODE_NORMAL, /* stream = one track */
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GST_CDDA_BASE_SRC_MODE_CONTINUOUS /* stream = whole disc */
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} GstCddaBaseSrcMode;
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#define GST_TYPE_CDDA_BASE_SRC_MODE (gst_cdda_base_src_mode_get_type ())
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/**
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* GstCddaBaseSrcTrack:
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* @is_audio: Whether this is an audio track
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* @num: Track number in TOC (usually starts from 1, but not always)
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* @start: The first sector of this track (LBA)
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* @end: The last sector of this track (LBA)
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* @tags: Track-specific tags (e.g. from cd-text information), or NULL
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*
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* CD track abstraction to communicate TOC entries to the base class.
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*/
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struct _GstCddaBaseSrcTrack {
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gboolean is_audio; /* TRUE if this is an audio track */
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guint num; /* real track number (usually starts from 1) */
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guint start; /* first sector of track (LBA, not LSN!) */
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guint end; /* last sector of track (LBA, not LSN!) */
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GstTagList *tags; /* NULL or tags for track (e.g. from cd-text) */
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/*< private >*/
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guint _gst_reserved1[GST_PADDING/2];
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gpointer _gst_reserved2[GST_PADDING/2];
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};
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struct _GstCddaBaseSrc {
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GstPushSrc pushsrc;
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/*< protected >*/ /* for use by sub-classes only */
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GstTagList *tags; /* tags that apply to all tracks */
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/*< private >*/
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GstCddaBaseSrcMode mode;
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gchar *device;
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guint num_tracks;
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guint num_all_tracks;
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GstCddaBaseSrcTrack *tracks;
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gint cur_track; /* current track (starting from 0) */
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gint prev_track; /* current track last time */
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gint cur_sector; /* current sector */
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gint seek_sector; /* -1 or sector to seek to */
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gint uri_track;
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gchar *uri;
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guint32 discid; /* cddb disc id (for unit test) */
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gchar mb_discid[32]; /* musicbrainz discid */
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GstIndex *index;
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gint index_id;
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gint toc_offset;
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gboolean toc_bias;
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/*< private >*/
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guint _gst_reserved1[GST_PADDING/2];
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gpointer _gst_reserved2[GST_PADDING/2];
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};
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/**
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* GstCddaBaseSrcClass:
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* @pushsrc_class: the parent class
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* @open: opening the device
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* @close: closing the device
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* @read_sector: reading a sector
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* @get_default_device: getting the default device
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* @probe_devices: probing possible devices
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*
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* Cdda source base class.
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*/
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struct _GstCddaBaseSrcClass {
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GstPushSrcClass pushsrc_class;
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/* open/close the CD device */
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gboolean (*open) (GstCddaBaseSrc *src, const gchar *device);
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void (*close) (GstCddaBaseSrc *src);
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/* read one sector (LBA) */
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GstBuffer * (*read_sector) (GstCddaBaseSrc *src, gint sector);
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/* return default device or NULL (optional) */
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gchar * (*get_default_device) (GstCddaBaseSrc *src);
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/* return NULL-terminated string array of CD devices, or NULL (optional) */
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gchar ** (*probe_devices) (GstCddaBaseSrc *src);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_cdda_base_src_get_type (void);
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GType gst_cdda_base_src_mode_get_type (void);
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gboolean gst_cdda_base_src_add_track (GstCddaBaseSrc * src,
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GstCddaBaseSrcTrack * track);
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#if 0
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/*
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* GST_TAG_CDDA_TRACK_TAGS:
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*
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* Tag details for all available tracks
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* FiXME: find out which type we want for this!
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*/
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#define GST_TAG_CDDA_TRACK_TAGS "track-tags"
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#endif
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G_END_DECLS
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#endif /* __GST_CDDA_BASE_SRC_H__ */
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