mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-10 01:59:30 +00:00
0431a0845c
Gapless playback is handled by adjusting buffer timestamps & durations and by adding GstAudioClippingMeta. Support for "Frankenstein" streams (= poorly stitched together streams) is also added, so that gapless playback support doesn't prevent those from being properly played. Co-authored-by: Sebastian Dröge <sebastian@centricular.com> Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1028>
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/* GStreamer MPEG audio parser
|
|
* Copyright (C) 2006-2007 Jan Schmidt <thaytan@mad.scientist.com>
|
|
* Copyright (C) 2010 Mark Nauwelaerts <mnauw users sf net>
|
|
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
|
|
* Contact: Stefan Kost <stefan.kost@nokia.com>
|
|
*
|
|
* 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 __GST_MPEG_AUDIO_PARSE_H__
|
|
#define __GST_MPEG_AUDIO_PARSE_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbaseparse.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_MPEG_AUDIO_PARSE \
|
|
(gst_mpeg_audio_parse_get_type())
|
|
#define GST_MPEG_AUDIO_PARSE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParse))
|
|
#define GST_MPEG_AUDIO_PARSE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParseClass))
|
|
#define GST_IS_MPEG_AUDIO_PARSE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_MPEG_AUDIO_PARSE))
|
|
#define GST_IS_MPEG_AUDIO_PARSE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_MPEG_AUDIO_PARSE))
|
|
|
|
typedef struct _GstMpegAudioParse GstMpegAudioParse;
|
|
typedef struct _GstMpegAudioParseClass GstMpegAudioParseClass;
|
|
|
|
/**
|
|
* GstMpegAudioParse:
|
|
*
|
|
* The opaque GstMpegAudioParse object
|
|
*/
|
|
struct _GstMpegAudioParse {
|
|
GstBaseParse baseparse;
|
|
|
|
/*< private >*/
|
|
GstFormat upstream_format;
|
|
|
|
gint rate;
|
|
gint channels;
|
|
gint layer;
|
|
gint version;
|
|
|
|
GstClockTime max_bitreservoir;
|
|
|
|
/* Samples per frame */
|
|
gint spf;
|
|
|
|
GstClockTime frame_duration;
|
|
|
|
gint freerate;
|
|
|
|
gboolean sent_codec_tag;
|
|
guint last_posted_bitrate;
|
|
gint last_posted_crc, last_crc;
|
|
guint last_posted_channel_mode, last_mode;
|
|
|
|
gboolean outgoing_frame_is_xing_header;
|
|
|
|
/* Bitrate from non-vbr headers */
|
|
guint32 hdr_bitrate;
|
|
gboolean bitrate_is_constant;
|
|
|
|
/* Xing info */
|
|
guint32 xing_flags;
|
|
guint32 xing_frames;
|
|
GstClockTime xing_total_time;
|
|
GstClockTime xing_actual_total_time;
|
|
guint32 xing_bytes;
|
|
/* percent -> filepos mapping */
|
|
guchar xing_seek_table[100];
|
|
/* filepos -> percent mapping */
|
|
guint16 xing_seek_table_inverse[256];
|
|
guint32 xing_vbr_scale;
|
|
guint xing_bitrate;
|
|
|
|
/* VBRI info */
|
|
guint32 vbri_frames;
|
|
GstClockTime vbri_total_time;
|
|
guint32 vbri_bytes;
|
|
guint vbri_bitrate;
|
|
guint vbri_seek_points;
|
|
guint32 *vbri_seek_table;
|
|
gboolean vbri_valid;
|
|
|
|
/* LAME info */
|
|
guint32 encoder_delay;
|
|
guint32 encoder_padding;
|
|
|
|
/* Gapless playback states */
|
|
guint32 decoder_delay;
|
|
guint64 start_of_actual_samples;
|
|
guint64 end_of_actual_samples;
|
|
GstClockTime start_padding_time;
|
|
GstClockTime end_padding_time;
|
|
GstClockTime total_padding_time;
|
|
};
|
|
|
|
/**
|
|
* GstMpegAudioParseClass:
|
|
* @parent_class: Element parent class.
|
|
*
|
|
* The opaque GstMpegAudioParseClass data structure.
|
|
*/
|
|
struct _GstMpegAudioParseClass {
|
|
GstBaseParseClass baseparse_class;
|
|
};
|
|
|
|
GType gst_mpeg_audio_parse_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_MPEG_AUDIO_PARSE_H__ */
|