84 lines
3.1 KiB
C
84 lines
3.1 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 AOM_AV1_COMMON_QUANT_COMMON_H_
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#define AOM_AV1_COMMON_QUANT_COMMON_H_
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#include <stdbool.h>
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#include "aom/aom_codec.h"
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#include "av1/common/seg_common.h"
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#include "av1/common/enums.h"
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#include "av1/common/entropy.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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// Total number of QM sets stored
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#define QM_LEVEL_BITS 4
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#define NUM_QM_LEVELS (1 << QM_LEVEL_BITS)
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/* Range of QMS is between first and last value, with offset applied to inter
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* blocks*/
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#define DEFAULT_QM_Y 10
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#define DEFAULT_QM_U 11
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#define DEFAULT_QM_V 12
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#define DEFAULT_QM_FIRST 5
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#define DEFAULT_QM_LAST 9
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#define LOSSLESS_Q_STEP 4 // this should equal to dc/ac_qlookup_QTX[0]
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struct AV1Common;
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struct CommonQuantParams;
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struct macroblockd;
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int16_t av1_dc_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
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int16_t av1_ac_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
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int av1_get_qindex(const struct segmentation *seg, int segment_id,
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int base_qindex);
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// Returns true if we are using quantization matrix.
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bool av1_use_qmatrix(const struct CommonQuantParams *quant_params,
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const struct macroblockd *xd, int segment_id);
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// Reduce the large number of quantizers to a smaller number of levels for which
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// different matrices may be defined
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static INLINE int aom_get_qmlevel(int qindex, int first, int last) {
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return first + (qindex * (last + 1 - first)) / QINDEX_RANGE;
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}
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// Initialize all global quant/dequant matrices.
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void av1_qm_init(struct CommonQuantParams *quant_params, int num_planes);
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// Get global dequant matrix.
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const qm_val_t *av1_iqmatrix(const struct CommonQuantParams *quant_params,
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int qmlevel, int plane, TX_SIZE tx_size);
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// Get global quant matrix.
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const qm_val_t *av1_qmatrix(const struct CommonQuantParams *quant_params,
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int qmlevel, int plane, TX_SIZE tx_size);
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// Get either local / global dequant matrix as appropriate.
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const qm_val_t *av1_get_iqmatrix(const struct CommonQuantParams *quant_params,
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const struct macroblockd *xd, int plane,
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TX_SIZE tx_size, TX_TYPE tx_type);
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// Get either local / global quant matrix as appropriate.
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const qm_val_t *av1_get_qmatrix(const struct CommonQuantParams *quant_params,
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const struct macroblockd *xd, int plane,
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TX_SIZE tx_size, TX_TYPE tx_type);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AOM_AV1_COMMON_QUANT_COMMON_H_
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