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
56 lines
2.1 KiB
C
56 lines
2.1 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_ENCODER_VP9_SUBEXP_H_
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#define VP9_ENCODER_VP9_SUBEXP_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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void vp9_write_prob_diff_update(vp9_writer *w,
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vp9_prob newp, vp9_prob oldp);
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void vp9_cond_prob_diff_update(vp9_writer *w, vp9_prob *oldp,
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unsigned int *ct);
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int vp9_cond_prob_diff_update_savings(vp9_prob *oldp,
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const unsigned int ct[2]);
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int vp9_prob_diff_update_savings_search(const unsigned int *ct,
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vp9_prob oldp, vp9_prob *bestp,
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vp9_prob upd);
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int vp9_prob_diff_update_savings_search_model(const unsigned int *ct,
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const vp9_prob *oldp,
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vp9_prob *bestp,
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vp9_prob upd);
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// num_values is the number of values word can take
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void vp9_write_primitive_uniform(vp9_writer *w, int word,
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unsigned int num_values);
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// k is the parameter of the subexponential code
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void vp9_write_primitive_subexp(vp9_writer *w, int word,
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unsigned int k);
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//
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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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void vp9_write_primitive_symmetric(vp9_writer *w, int word,
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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_ENCODER_VP9_SUBEXP_H_
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