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91d4abceaa
Some muxers (eg, qtmux) only support raw AAC, so this allows linking an encoder that outputs ADTS only to those muxers. The conversion is simple (omit the first 7 or 9 bytes of the frame), but has to be done in pre_push instead of handle_frame as 1.0 does not seem to allow skipping bytes there as 0.10 used to. Other conversions are not supported (yet).
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* GStreamer AAC parser
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* Copyright (C) 2008 Nokia Corporation. All rights reserved.
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*
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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_AAC_PARSE_H__
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#define __GST_AAC_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_AAC_PARSE \
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(gst_aac_parse_get_type())
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#define GST_AAC_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AAC_PARSE, GstAacParse))
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#define GST_AAC_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AAC_PARSE, GstAacParseClass))
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#define GST_IS_AAC_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AAC_PARSE))
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#define GST_IS_AAC_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AAC_PARSE))
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/**
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* GstAacHeaderType:
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* @DSPAAC_HEADER_NOT_PARSED: Header not parsed yet.
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* @DSPAAC_HEADER_UNKNOWN: Unknown (not recognized) header.
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* @DSPAAC_HEADER_ADIF: ADIF header found.
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* @DSPAAC_HEADER_ADTS: ADTS header found.
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* @DSPAAC_HEADER_LOAS: LOAS header found.
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* @DSPAAC_HEADER_NONE: Raw stream, no header.
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*
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* Type header enumeration set in #header_type.
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*/
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typedef enum {
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DSPAAC_HEADER_NOT_PARSED,
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DSPAAC_HEADER_UNKNOWN,
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DSPAAC_HEADER_ADIF,
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DSPAAC_HEADER_ADTS,
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DSPAAC_HEADER_LOAS,
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DSPAAC_HEADER_NONE
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} GstAacHeaderType;
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typedef struct _GstAacParse GstAacParse;
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typedef struct _GstAacParseClass GstAacParseClass;
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/**
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* GstAacParse:
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*
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* The opaque GstAacParse data structure.
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*/
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struct _GstAacParse {
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GstBaseParse element;
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/* Stream type -related info */
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gint object_type;
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gint bitrate;
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gint sample_rate;
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gint channels;
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gint mpegversion;
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gint frame_samples;
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GstAacHeaderType header_type;
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GstAacHeaderType output_header_type;
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};
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/**
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* GstAacParseClass:
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* @parent_class: Element parent class.
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*
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* The opaque GstAacParseClass data structure.
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*/
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struct _GstAacParseClass {
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GstBaseParseClass parent_class;
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};
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GType gst_aac_parse_get_type (void);
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G_END_DECLS
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#endif /* __GST_AAC_PARSE_H__ */
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