| /* |
| * 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" |
| #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 |
| #if CONFIG_AOM_QM |
| // 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_FIRST 5 |
| #define DEFAULT_QM_LAST 9 |
| #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); |
| int16_t av1_qindex_from_ac(int ac, 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) { |
| return first + (qindex * (last + 1 - first)) / QINDEX_RANGE; |
| } |
| void aom_qm_init(struct AV1Common *cm); |
| qm_val_t *aom_iqmatrix(struct AV1Common *cm, int qindex, int comp, |
| TX_SIZE tx_size); |
| qm_val_t *aom_qmatrix(struct AV1Common *cm, int qindex, int comp, |
| TX_SIZE tx_size); |
| #endif |
| |
| #if CONFIG_NEW_QUANT |
| |
| #define QUANT_PROFILES 4 |
| #define QUANT_RANGES 2 |
| #define NUQ_KNOTS 3 |
| |
| typedef tran_low_t dequant_val_type_nuq[NUQ_KNOTS + 1]; |
| typedef tran_low_t cuml_bins_type_nuq[NUQ_KNOTS]; |
| void av1_get_dequant_val_nuq(int q, int band, tran_low_t *dq, |
| tran_low_t *cuml_bins, int dq_off_index); |
| tran_low_t av1_dequant_abscoeff_nuq(int v, int q, const tran_low_t *dq); |
| tran_low_t av1_dequant_coeff_nuq(int v, int q, const tran_low_t *dq); |
| |
| static INLINE int qindex_to_qrange(int qindex) { |
| return (qindex < 140 ? 1 : 0); |
| } |
| |
| static INLINE int get_dq_profile_from_ctx(int qindex, int q_ctx, int is_inter, |
| PLANE_TYPE plane_type) { |
| // intra/inter, Y/UV, ctx, qrange |
| static const int |
| def_dq_profile_lookup[REF_TYPES][PLANE_TYPES][COEFF_CONTEXTS0] |
| [QUANT_RANGES] = { |
| { |
| // intra |
| { { 2, 1 }, { 2, 1 }, { 2, 1 } }, // Y |
| { { 3, 1 }, { 3, 1 }, { 3, 1 } }, // UV |
| }, |
| { |
| // inter |
| { { 3, 1 }, { 2, 1 }, { 2, 1 } }, // Y |
| { { 3, 1 }, { 3, 1 }, { 3, 1 } }, // UV |
| }, |
| }; |
| if (!qindex) return 0; // lossless |
| return def_dq_profile_lookup[is_inter][plane_type][q_ctx] |
| [qindex_to_qrange(qindex)]; |
| } |
| #endif // CONFIG_NEW_QUANT |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AV1_COMMON_QUANT_COMMON_H_ |