a21afd421b
This experiment implements non-uniform quantization where the width of the bins increases gradually to more closely match a laplacian distribution of the coeficcients. Performance Gain: derflr: 0.15% hevcmr: 0.675% Change-Id: I25234244e3bcd94b87c1f77cf682190b61c8ef94
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* Copyright (c) 2010 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 VP10_COMMON_QUANT_COMMON_H_
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#define VP10_COMMON_QUANT_COMMON_H_
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#include "vpx/vpx_codec.h"
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#include "vp10/common/seg_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MINQ 0
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#define MAXQ 255
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#define QINDEX_RANGE (MAXQ - MINQ + 1)
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#define QINDEX_BITS 8
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int16_t vp10_dc_quant(int qindex, int delta, vpx_bit_depth_t bit_depth);
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int16_t vp10_ac_quant(int qindex, int delta, vpx_bit_depth_t bit_depth);
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int vp10_get_qindex(const struct segmentation *seg, int segment_id,
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int base_qindex);
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#if CONFIG_NEW_QUANT
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#define NUQ_KNOTS 3
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typedef tran_low_t dequant_val_type_nuq[NUQ_KNOTS + 1];
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typedef tran_low_t cuml_bins_type_nuq[NUQ_KNOTS];
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void get_dequant_val_nuq(int q, int lossless, int band,
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tran_low_t *dq, tran_low_t *cumbins);
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tran_low_t dequant_abscoeff_nuq(int v, int q, const tran_low_t *dq);
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tran_low_t dequant_coeff_nuq(int v, int q, const tran_low_t *dq);
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#endif // CONFIG_NEW_QUANT
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP10_COMMON_QUANT_COMMON_H_
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