gstreamer/gst-libs/gst/codecparsers/gstvp8rangedecoder.h

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/*
* gstvp8rangedecoder.h - VP8 range decoder interface
*
* Copyright (C) 2014 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.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_VP8_RANGE_DECODER_H
#define GST_VP8_RANGE_DECODER_H
#include <glib.h>
#include <gst/gstconfig.h>
typedef struct _GstVp8RangeDecoder GstVp8RangeDecoder;
typedef struct _GstVp8RangeDecoderState GstVp8RangeDecoderState;
/**
* GstVp8RangeDecoder:
* @buf: the original bitstream buffer start
* @buf_size: the original bitstream buffer size
*
* Range decoder.
*/
struct _GstVp8RangeDecoder {
const guchar *buf;
guint buf_size;
/*< private >*/
gpointer _gst_reserved[GST_PADDING_LARGE];
};
/**
* GstVp8RangeDecoderState:
* @range: current "Range" value
* @value: current "Value" value
* @count: number of bits left in "Value" for decoding
*
* Range decoder state.
*/
struct _GstVp8RangeDecoderState {
guint8 range;
guint8 value;
guint8 count;
};
GST_EXPORT
gboolean gst_vp8_range_decoder_init (GstVp8RangeDecoder * rd,
const guchar * buf,
guint buf_size);
GST_EXPORT
gint gst_vp8_range_decoder_read (GstVp8RangeDecoder * rd, guint8 prob);
GST_EXPORT
gint gst_vp8_range_decoder_read_literal (GstVp8RangeDecoder * rd, gint bits);
GST_EXPORT
guint gst_vp8_range_decoder_get_pos (GstVp8RangeDecoder * rd);
GST_EXPORT
void gst_vp8_range_decoder_get_state (GstVp8RangeDecoder * rd,
GstVp8RangeDecoderState * state);
#endif /* GST_VP8_RANGE_DECODER_H */