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