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8b468c3c36
And ensure that GstAudioBaseSrcSlaveMethod's re-timestamp stays re-timestamp and doesn't become retimestamp.
145 lines
5.2 KiB
C
145 lines
5.2 KiB
C
/* GStreamer Audio CD Source Base Class
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_AUDIO_AUDIO_H__
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#include <gst/audio/audio.h>
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#endif
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#ifndef __GST_AUDIO_CD_SRC_H__
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#define __GST_AUDIO_CD_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/gstpushsrc.h>
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G_BEGIN_DECLS
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#define GST_TYPE_AUDIO_CD_SRC (gst_audio_cd_src_get_type())
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#define GST_AUDIO_CD_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AUDIO_CD_SRC, GstAudioCdSrc))
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#define GST_AUDIO_CD_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AUDIO_CD_SRC, GstAudioCdSrcClass))
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#define GST_IS_AUDIO_CD_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AUDIO_CD_SRC))
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#define GST_IS_AUDIO_CD_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AUDIO_CD_SRC))
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#define GST_AUDIO_CD_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AUDIO_CD_SRC, GstAudioCdSrcClass))
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typedef struct _GstAudioCdSrc GstAudioCdSrc;
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typedef struct _GstAudioCdSrcClass GstAudioCdSrcClass;
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typedef struct _GstAudioCdSrcTrack GstAudioCdSrcTrack;
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typedef struct _GstAudioCdSrcPrivate GstAudioCdSrcPrivate;
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/**
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* GstAudioCdSrcMode:
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* @GST_AUDIO_CD_SRC_MODE_NORMAL : each single track is a stream
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* @GST_AUDIO_CD_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_AUDIO_CD_SRC_MODE_NORMAL, /* stream = one track */
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GST_AUDIO_CD_SRC_MODE_CONTINUOUS /* stream = whole disc */
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} GstAudioCdSrcMode;
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/**
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* GstAudioCdSrcTrack:
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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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* This structure is only for use by sub-classed in connection with
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* gst_audio_cd_src_add_track().
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*
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* Applications will be informed of the available tracks via a TOC message
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* on the pipeline's #GstBus instead.
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*/
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/* FIXME 2.0: remove this struct and pass values directly to _add_track() */
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struct _GstAudioCdSrcTrack {
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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 _GstAudioCdSrc {
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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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GstAudioCdSrcPrivate *priv;
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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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* GstAudioCdSrcClass:
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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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* Audio CD source base class.
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*/
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struct _GstAudioCdSrcClass {
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GstPushSrcClass pushsrc_class;
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/* open/close the CD device */
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gboolean (*open) (GstAudioCdSrc *src, const gchar *device);
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void (*close) (GstAudioCdSrc *src);
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/* read one sector (LBA) */
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GstBuffer * (*read_sector) (GstAudioCdSrc *src, gint sector);
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#if 0
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/* return default device or NULL (optional) */
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gchar * (*get_default_device) (GstAudioCdSrc *src);
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/* return NULL-terminated string array of CD devices, or NULL (optional) */
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/* FIXME 0.11: reconsider for new probing/device discovery API, remove if in doubt */
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gchar ** (*probe_devices) (GstAudioCdSrc *src);
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#endif
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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GType gst_audio_cd_src_get_type (void);
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gboolean gst_audio_cd_src_add_track (GstAudioCdSrc * src,
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GstAudioCdSrcTrack * track);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAudioCdSrc, gst_object_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_AUDIO_CD_SRC_H__ */
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