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aab5cccc34
If new headers arrive after we are initialized, we need to make sure that they are indeed valid. A vorbis bitstream always begins with three header packets and must be in order. Also some streams have unframed (invalid?) headers that might confuse and disrupt the decoding process. Therefore if ever we see new headers, we accumulate them and once we get a non-header packet we check them to make sure that: * We have at least 3 headers * They are the expected ones (identification, comments and setup) * They are in order * Any other "header" is ignored If those conditions are met, we reset and reconfigure the decoder https://bugzilla.gnome.org/show_bug.cgi?id=784530
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/* -*- c-basic-offset: 2 -*-
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* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_VORBIS_DEC_H__
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#define __GST_VORBIS_DEC_H__
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/audio/gstaudiodecoder.h>
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#include "gstvorbisdeclib.h"
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G_BEGIN_DECLS
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#define GST_TYPE_VORBIS_DEC \
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(gst_vorbis_dec_get_type())
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#define GST_VORBIS_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VORBIS_DEC,GstVorbisDec))
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#define GST_VORBIS_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VORBIS_DEC,GstVorbisDecClass))
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#define GST_IS_VORBIS_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VORBIS_DEC))
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#define GST_IS_VORBIS_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VORBIS_DEC))
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typedef struct _GstVorbisDec GstVorbisDec;
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typedef struct _GstVorbisDecClass GstVorbisDecClass;
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/**
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* GstVorbisDec:
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*
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* Opaque data structure.
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*/
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struct _GstVorbisDec {
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GstAudioDecoder element;
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vorbis_dsp_state vd;
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vorbis_info vi;
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vorbis_comment vc;
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#ifndef USE_TREMOLO
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vorbis_block vb;
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#endif
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gboolean initialized;
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GstAudioInfo info;
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CopySampleFunc copy_samples;
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GList *pending_headers;
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};
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struct _GstVorbisDecClass {
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GstAudioDecoderClass parent_class;
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};
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GType gst_vorbis_dec_get_type(void);
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G_END_DECLS
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#endif /* __GST_VORBIS_DEC_H__ */
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