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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>
130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/* GStreamer MPEG audio parser
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* Copyright (C) 2006-2007 Jan Schmidt <thaytan@mad.scientist.com>
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* Copyright (C) 2010 Mark Nauwelaerts <mnauw users sf net>
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* Copyright (C) 2010 Nokia Corporation. All rights reserved.
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* Contact: Stefan Kost <stefan.kost@nokia.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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_MPEG_AUDIO_PARSE_H__
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#define __GST_MPEG_AUDIO_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbaseparse.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MPEG_AUDIO_PARSE \
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(gst_mpeg_audio_parse_get_type())
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#define GST_MPEG_AUDIO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParse))
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#define GST_MPEG_AUDIO_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_MPEG_AUDIO_PARSE, GstMpegAudioParseClass))
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#define GST_IS_MPEG_AUDIO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_MPEG_AUDIO_PARSE))
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#define GST_IS_MPEG_AUDIO_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_MPEG_AUDIO_PARSE))
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typedef struct _GstMpegAudioParse GstMpegAudioParse;
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typedef struct _GstMpegAudioParseClass GstMpegAudioParseClass;
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/**
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* GstMpegAudioParse:
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*
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* The opaque GstMpegAudioParse object
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*/
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struct _GstMpegAudioParse {
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GstBaseParse baseparse;
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/*< private >*/
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GstFormat upstream_format;
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gint rate;
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gint channels;
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gint layer;
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gint version;
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GstClockTime max_bitreservoir;
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/* Samples per frame */
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gint spf;
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GstClockTime frame_duration;
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gint freerate;
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gboolean sent_codec_tag;
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guint last_posted_bitrate;
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gint last_posted_crc, last_crc;
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guint last_posted_channel_mode, last_mode;
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gboolean outgoing_frame_is_xing_header;
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/* Bitrate from non-vbr headers */
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guint32 hdr_bitrate;
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gboolean bitrate_is_constant;
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/* Xing info */
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guint32 xing_flags;
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guint32 xing_frames;
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GstClockTime xing_total_time;
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GstClockTime xing_actual_total_time;
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guint32 xing_bytes;
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/* percent -> filepos mapping */
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guchar xing_seek_table[100];
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/* filepos -> percent mapping */
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guint16 xing_seek_table_inverse[256];
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guint32 xing_vbr_scale;
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guint xing_bitrate;
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/* VBRI info */
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guint32 vbri_frames;
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GstClockTime vbri_total_time;
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guint32 vbri_bytes;
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guint vbri_bitrate;
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guint vbri_seek_points;
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guint32 *vbri_seek_table;
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gboolean vbri_valid;
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/* LAME info */
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guint32 encoder_delay;
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guint32 encoder_padding;
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/* Gapless playback states */
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guint32 decoder_delay;
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guint64 start_of_actual_samples;
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guint64 end_of_actual_samples;
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GstClockTime start_padding_time;
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GstClockTime end_padding_time;
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GstClockTime total_padding_time;
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};
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/**
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* GstMpegAudioParseClass:
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* @parent_class: Element parent class.
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*
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* The opaque GstMpegAudioParseClass data structure.
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*/
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struct _GstMpegAudioParseClass {
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GstBaseParseClass baseparse_class;
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};
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GType gst_mpeg_audio_parse_get_type (void);
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G_END_DECLS
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#endif /* __GST_MPEG_AUDIO_PARSE_H__ */
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