gstreamer/gst/audioparsers/gstaacparse.h
Vincent Penquerc'h 91d4abceaa aacparse: allow conversion from ADTS to raw AAC
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).
2013-07-26 09:44:11 +01:00

100 lines
2.7 KiB
C

/* GStreamer AAC parser
* Copyright (C) 2008 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_AAC_PARSE_H__
#define __GST_AAC_PARSE_H__
#include <gst/gst.h>
#include <gst/base/gstbaseparse.h>
G_BEGIN_DECLS
#define GST_TYPE_AAC_PARSE \
(gst_aac_parse_get_type())
#define GST_AAC_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AAC_PARSE, GstAacParse))
#define GST_AAC_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AAC_PARSE, GstAacParseClass))
#define GST_IS_AAC_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AAC_PARSE))
#define GST_IS_AAC_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AAC_PARSE))
/**
* GstAacHeaderType:
* @DSPAAC_HEADER_NOT_PARSED: Header not parsed yet.
* @DSPAAC_HEADER_UNKNOWN: Unknown (not recognized) header.
* @DSPAAC_HEADER_ADIF: ADIF header found.
* @DSPAAC_HEADER_ADTS: ADTS header found.
* @DSPAAC_HEADER_LOAS: LOAS header found.
* @DSPAAC_HEADER_NONE: Raw stream, no header.
*
* Type header enumeration set in #header_type.
*/
typedef enum {
DSPAAC_HEADER_NOT_PARSED,
DSPAAC_HEADER_UNKNOWN,
DSPAAC_HEADER_ADIF,
DSPAAC_HEADER_ADTS,
DSPAAC_HEADER_LOAS,
DSPAAC_HEADER_NONE
} GstAacHeaderType;
typedef struct _GstAacParse GstAacParse;
typedef struct _GstAacParseClass GstAacParseClass;
/**
* GstAacParse:
*
* The opaque GstAacParse data structure.
*/
struct _GstAacParse {
GstBaseParse element;
/* Stream type -related info */
gint object_type;
gint bitrate;
gint sample_rate;
gint channels;
gint mpegversion;
gint frame_samples;
GstAacHeaderType header_type;
GstAacHeaderType output_header_type;
};
/**
* GstAacParseClass:
* @parent_class: Element parent class.
*
* The opaque GstAacParseClass data structure.
*/
struct _GstAacParseClass {
GstBaseParseClass parent_class;
};
GType gst_aac_parse_get_type (void);
G_END_DECLS
#endif /* __GST_AAC_PARSE_H__ */