8fe50191c6
This commit reworks the ONE_LOOP_REDUCED coefficient probability model update process. It allows model update for every coefficient across the spectrum at a coarser resolution, instead of performing precise update only for certain subset of probability models. The overall runtime remains nearly same (<1% change) for speed -6. The compression performance is improved by 7.5% in PSNR for speed -5 and 4.57% for speed -6, respectively. Change-Id: Ifb17136382ee7e39a9f34ff4a4f09a753125c8d1
41 lines
1.3 KiB
C
41 lines
1.3 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_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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int stepsize);
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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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