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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AV1_COMMON_QUANT_COMMON_H_
#define AOM_AV1_COMMON_QUANT_COMMON_H_
#include <stdbool.h>
#include "aom/aom_codec.h"
#include "av1/common/seg_common.h"
#include "av1/common/enums.h"
#include "av1/common/entropy.h"
#ifdef __cplusplus
extern "C" {
#endif
#define MINQ 0
#define MAXQ 255
#define QINDEX_RANGE (MAXQ - MINQ + 1)
#define QINDEX_BITS 8
// Total number of QM sets stored
#define QM_LEVEL_BITS 4
#define NUM_QM_LEVELS (1 << QM_LEVEL_BITS)
/* Range of QMS is between first and last value, with offset applied to inter
* blocks*/
#define DEFAULT_QM_Y 10
#define DEFAULT_QM_U 11
#define DEFAULT_QM_V 12
#define DEFAULT_QM_FIRST 5
#define DEFAULT_QM_LAST 9
#define LOSSLESS_Q_STEP 4 // this should equal to dc/ac_qlookup_QTX[0]
struct AV1Common;
struct CommonQuantParams;
struct macroblockd;
int16_t av1_dc_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
int16_t av1_ac_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
int av1_get_qindex(const struct segmentation *seg, int segment_id,
int base_qindex);
// Returns true if we are using quantization matrix.
bool av1_use_qmatrix(const struct CommonQuantParams *quant_params,
const struct macroblockd *xd, int segment_id);
// Reduce the large number of quantizers to a smaller number of levels for which
// different matrices may be defined
static INLINE int aom_get_qmlevel(int qindex, int first, int last) {
return first + (qindex * (last + 1 - first)) / QINDEX_RANGE;
}
// Initialize all global quant/dequant matrices.
void av1_qm_init(struct CommonQuantParams *quant_params, int num_planes);
// Get global dequant matrix.
const qm_val_t *av1_iqmatrix(const struct CommonQuantParams *quant_params,
int qmlevel, int plane, TX_SIZE tx_size);
// Get global quant matrix.
const qm_val_t *av1_qmatrix(const struct CommonQuantParams *quant_params,
int qmlevel, int plane, TX_SIZE tx_size);
// Get either local / global dequant matrix as appropriate.
const qm_val_t *av1_get_iqmatrix(const struct CommonQuantParams *quant_params,
const struct macroblockd *xd, int plane,
TX_SIZE tx_size, TX_TYPE tx_type);
// Get either local / global quant matrix as appropriate.
const qm_val_t *av1_get_qmatrix(const struct CommonQuantParams *quant_params,
const struct macroblockd *xd, int plane,
TX_SIZE tx_size, TX_TYPE tx_type);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_COMMON_QUANT_COMMON_H_
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