1 /*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #ifndef AOM_AV1_COMMON_QUANT_COMMON_H_
13 #define AOM_AV1_COMMON_QUANT_COMMON_H_
14
15 #include "aom/aom_codec.h"
16 #include "av1/common/seg_common.h"
17 #include "av1/common/enums.h"
18 #include "av1/common/entropy.h"
19
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23
24 #define MINQ 0
25 #define MAXQ 255
26 #define QINDEX_RANGE (MAXQ - MINQ + 1)
27 #define QINDEX_BITS 8
28 // Total number of QM sets stored
29 #define QM_LEVEL_BITS 4
30 #define NUM_QM_LEVELS (1 << QM_LEVEL_BITS)
31 /* Range of QMS is between first and last value, with offset applied to inter
32 * blocks*/
33 #define DEFAULT_QM_Y 10
34 #define DEFAULT_QM_U 11
35 #define DEFAULT_QM_V 12
36 #define DEFAULT_QM_FIRST 5
37 #define DEFAULT_QM_LAST 9
38
39 struct AV1Common;
40
41 int16_t av1_dc_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth);
42 int16_t av1_ac_quant_Q3(int qindex, int delta, aom_bit_depth_t bit_depth);
43 int16_t av1_dc_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
44 int16_t av1_ac_quant_QTX(int qindex, int delta, aom_bit_depth_t bit_depth);
45
46 int av1_get_qindex(const struct segmentation *seg, int segment_id,
47 int base_qindex);
48 // Reduce the large number of quantizers to a smaller number of levels for which
49 // different matrices may be defined
aom_get_qmlevel(int qindex,int first,int last)50 static INLINE int aom_get_qmlevel(int qindex, int first, int last) {
51 return first + (qindex * (last + 1 - first)) / QINDEX_RANGE;
52 }
53 void av1_qm_init(struct AV1Common *cm);
54 const qm_val_t *av1_iqmatrix(struct AV1Common *cm, int qindex, int comp,
55 TX_SIZE tx_size);
56 const qm_val_t *av1_qmatrix(struct AV1Common *cm, int qindex, int comp,
57 TX_SIZE tx_size);
58
59 #ifdef __cplusplus
60 } // extern "C"
61 #endif
62
63 #endif // AOM_AV1_COMMON_QUANT_COMMON_H_
64