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79f69bbf72
Handle large, invalid or otherwise unusual chunk sizes. Verify some chunk sizes to be at least the size they are expected to be and round up some sizes to even number for e.g. offset administration, which must also be properly tracked in push mode.
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2006> Nokia Corporation, 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_WAVPARSE_H__
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#define __GST_WAVPARSE_H__
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#include <gst/gst.h>
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#include "gst/riff/riff-ids.h"
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#include "gst/riff/riff-read.h"
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#include <gst/base/gstadapter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_WAVPARSE \
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(gst_wavparse_get_type())
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#define GST_WAVPARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPARSE,GstWavParse))
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#define GST_WAVPARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPARSE,GstWavParseClass))
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#define GST_IS_WAVPARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPARSE))
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#define GST_IS_WAVPARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPARSE))
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typedef enum {
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GST_WAVPARSE_START,
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GST_WAVPARSE_HEADER,
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GST_WAVPARSE_DATA
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} GstWavParseState;
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typedef struct _GstWavParse GstWavParse;
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typedef struct _GstWavParseClass GstWavParseClass;
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/**
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* GstWavParse:
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*
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* Opaque data structure.
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*/
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struct _GstWavParse {
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GstElement parent;
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/* pads */
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GstPad *sinkpad,*srcpad;
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/* for delayed source pad creation for when
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* we have the first chunk of data and know
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* the format for sure */
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GstCaps *caps;
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GstTagList *tags;
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GstEvent *close_segment;
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GstEvent *start_segment;
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/* WAVE decoding state */
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GstWavParseState state;
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gboolean abort_buffering;
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/* format of audio, see defines below */
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gint format;
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/* useful audio data */
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guint16 depth;
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guint32 rate;
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guint16 channels;
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guint16 blockalign;
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guint16 width;
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guint32 av_bps;
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guint32 fact;
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/* real bps used or 0 when no bitrate is known */
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guint32 bps;
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gboolean vbr;
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guint bytes_per_sample;
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/* position in data part */
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guint64 offset;
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guint64 end_offset;
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guint64 dataleft;
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/* offset/length of data part */
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guint64 datastart;
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guint64 datasize;
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/* duration in time */
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guint64 duration;
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/* pending seek */
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GstEvent *seek_event;
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/* For streaming */
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GstAdapter *adapter;
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gboolean got_fmt;
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gboolean streaming;
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/* configured segment, start/stop expressed in time */
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GstSegment segment;
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gboolean segment_running;
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/* for late pad configuration */
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gboolean first;
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/* discont after seek */
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gboolean discont;
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};
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struct _GstWavParseClass {
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GstElementClass parent_class;
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};
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GType gst_wavparse_get_type(void);
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G_END_DECLS
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#endif /* __GST_WAVPARSE_H__ */
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