80188d1546
This is a manual adaptation of the following commit from aom/master: ce12003d60a1c8d6c65ed07ba165c34062fcbcbd The original commit message: A tile group is a set of tiles in scan order. Each tile group has a version of uncompressed and compressed headers, identical apart from tile group parameters. Encoding probability updates takes account of the number of headers to control overheads. The decoder supports arbitrary numbers of tile groups with arbitrary number of tiles. The number of tiles in a TG is signalled in the uncompressed header for that TG. The encoder currently only supports a fixed number of TGs (3, when error resilient mode is on) of equal size (except possibly for the last one). The average BDR performnce with 3 tile groups versus anchor with error resilient mode and up to 16 tiles is: NR YCbCr: 3.02% 3.04% 3.05% PSNRHVS: 3.09% SSIM: 3.06% MSSSIM: 3.05% CIEDE2000: 3.04% Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b
59 lines
2.4 KiB
C
59 lines
2.4 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AV1_ENCODER_SUBEXP_H_
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#define AV1_ENCODER_SUBEXP_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "aom_dsp/bitwriter.h"
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#include "aom_dsp/prob.h"
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void av1_write_prob_diff_update(aom_writer *w, aom_prob newp, aom_prob oldpm);
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void av1_cond_prob_diff_update(aom_writer *w, aom_prob *oldp,
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const unsigned int ct[2], int probwt);
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int av1_prob_diff_update_savings_search(const unsigned int *ct, aom_prob oldp,
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aom_prob *bestp, aom_prob upd,
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int probwt);
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int av1_prob_diff_update_savings_search_model(const unsigned int *ct,
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const aom_prob *oldp,
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aom_prob *bestp, aom_prob upd,
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int stepsize, int probwt);
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int av1_cond_prob_diff_update_savings(aom_prob *oldp, const unsigned int ct[2],
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int probwt);
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#if CONFIG_ENTROPY
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int av1_prob_update_search_subframe(unsigned int ct[][2], aom_prob oldp,
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aom_prob *bestp, aom_prob upd, int n);
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int av1_prob_update_search_model_subframe(unsigned int ct[ENTROPY_NODES]
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[COEF_PROBS_BUFS][2],
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const aom_prob *oldp, aom_prob *bestp,
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aom_prob upd, int stepsize, int n);
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#endif // CONFIG_ENTROPY
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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 aom_write_primitive_symmetric(aom_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 // AV1_ENCODER_SUBEXP_H_
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