65 строки
2.2 KiB
C
65 строки
2.2 KiB
C
/*
|
|
* 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 AV1_COMMON_QUANT_COMMON_H_
|
|
#define AV1_COMMON_QUANT_COMMON_H_
|
|
|
|
#include "aom/aom_codec.h"
|
|
#include "av1/common/seg_common.h"
|
|
#include "av1/common/enums.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define MINQ 0
|
|
#define MAXQ 255
|
|
#define QINDEX_RANGE (MAXQ - MINQ + 1)
|
|
#define QINDEX_BITS 8
|
|
#if CONFIG_AOM_QM
|
|
// Total number of QM sets stored
|
|
#define QM_LEVEL_BITS 4
|
|
#define NUM_QM_LEVELS (1 << QM_LEVEL_BITS)
|
|
/* Offset into the list of QMs. Actual number of levels used is
|
|
(NUM_QM_LEVELS-AOM_QM_OFFSET)
|
|
Lower value of AOM_QM_OFFSET implies more heavily weighted matrices.*/
|
|
#define DEFAULT_QM_FIRST (NUM_QM_LEVELS / 2)
|
|
#define DEFAULT_QM_LAST (NUM_QM_LEVELS - 1)
|
|
#endif
|
|
|
|
struct AV1Common;
|
|
|
|
int16_t av1_dc_quant(int qindex, int delta, aom_bit_depth_t bit_depth);
|
|
int16_t av1_ac_quant(int qindex, int delta, aom_bit_depth_t bit_depth);
|
|
|
|
int av1_get_qindex(const struct segmentation *seg, int segment_id,
|
|
int base_qindex);
|
|
#if CONFIG_AOM_QM
|
|
// 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) {
|
|
int qmlevel = (qindex * (last + 1 - first) + QINDEX_RANGE / 2) / QINDEX_RANGE;
|
|
qmlevel = AOMMIN(qmlevel + first, NUM_QM_LEVELS - 1);
|
|
return qmlevel;
|
|
}
|
|
void aom_qm_init(struct AV1Common *cm);
|
|
qm_val_t *aom_iqmatrix(struct AV1Common *cm, int qindex, int comp,
|
|
int log2sizem2, int is_intra);
|
|
qm_val_t *aom_qmatrix(struct AV1Common *cm, int qindex, int comp,
|
|
int log2sizem2, int is_intra);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif // AV1_COMMON_QUANT_COMMON_H_
|