caae13d54f
Implements a first version of global motion where the existing ZEROMV mode is converted to a translation only global motion mode. A lot of the code for supporting a rotation-zoom affine model is also incorporated. WIP. Change-Id: Ia1288a8dfe82f89484d4e291780288388e56d91b
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/*
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* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_DECODER_VP9_DSUBEXP_H_
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#define VP9_DECODER_VP9_DSUBEXP_H_
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#include "vp9/decoder/vp9_reader.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void vp9_diff_update_prob(vp9_reader *r, vp9_prob* p);
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// num_values is the number of values the symbol can take
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int vp9_read_primitive_uniform(vp9_reader *r, unsigned int num_values);
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// k is the parameter of the subexponential code
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int vp9_read_primitive_subexp(vp9_reader *r, unsigned int k);
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// mag_bits is number of bits for magnitude. The alphabet is of size
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// 2 * 2^mag_bits + 1, symmetric around 0, where one bit is used to
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// indicate 0 or non-zero, mag_bits bits are used to indicate magnitide
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// and 1 more bit for the sign if non-zero.
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int vp9_read_primitive_symmetric(vp9_reader *r, unsigned int mag_bits);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_DECODER_VP9_DSUBEXP_H_
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