112 строки
3.2 KiB
C
112 строки
3.2 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 AV1_COMMON_FILTER_H_
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#define AV1_COMMON_FILTER_H_
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#include "./aom_config.h"
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#include "aom/aom_integer.h"
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#include "aom_dsp/aom_filter.h"
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#include "aom_ports/mem.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define USE_TEMPORALFILTER_12TAP 1
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#define MAX_FILTER_TAP 12
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#define USE_12TAP_FILTER 0
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typedef enum {
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EIGHTTAP_REGULAR,
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EIGHTTAP_SMOOTH,
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MULTITAP_SHARP,
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#if CONFIG_DUAL_FILTER
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EIGHTTAP_SMOOTH2,
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#endif // CONFIG_DUAL_FILTER
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BILINEAR,
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#if CONFIG_DUAL_FILTER
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EIGHTTAP_SHARP,
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FILTER_REGULAR_UV,
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FILTER_SMOOTH_UV,
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FILTER_SHARP_UV,
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FILTER_SMOOTH2_UV,
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#endif // CONFIG_DUAL_FILTER
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INTERP_FILTERS_ALL,
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SWITCHABLE_FILTERS = BILINEAR,
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SWITCHABLE = SWITCHABLE_FILTERS + 1, /* the last switchable one */
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EXTRA_FILTERS = INTERP_FILTERS_ALL - SWITCHABLE_FILTERS,
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#if USE_TEMPORALFILTER_12TAP
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TEMPORALFILTER_12TAP = SWITCHABLE_FILTERS + EXTRA_FILTERS,
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#endif
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} InterpFilter;
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#if CONFIG_DUAL_FILTER
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#define MAX_SUBPEL_TAPS 12
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#define LOG_SWITCHABLE_FILTERS \
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3 /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
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#define SWITCHABLE_FILTER_CONTEXTS ((SWITCHABLE_FILTERS + 1) * 4)
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#define INTER_FILTER_COMP_OFFSET (SWITCHABLE_FILTERS + 1)
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#define INTER_FILTER_DIR_OFFSET ((SWITCHABLE_FILTERS + 1) * 2)
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#else // CONFIG_DUAL_FILTER
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#define LOG_SWITCHABLE_FILTERS \
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2 /* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */
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#define SWITCHABLE_FILTER_CONTEXTS (SWITCHABLE_FILTERS + 1)
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#endif // CONFIG_DUAL_FILTER
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#if CONFIG_EXT_INTRA
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#if CONFIG_INTRA_INTERP
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typedef enum {
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INTRA_FILTER_LINEAR,
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INTRA_FILTER_8TAP,
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INTRA_FILTER_8TAP_SHARP,
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INTRA_FILTER_8TAP_SMOOTH,
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INTRA_FILTERS,
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} INTRA_FILTER;
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extern const InterpKernel *av1_intra_filter_kernels[INTRA_FILTERS];
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#endif // CONFIG_INTRA_INTERP
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#endif // CONFIG_EXT_INTRA
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typedef struct InterpFilterParams {
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const int16_t *filter_ptr;
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uint16_t taps;
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uint16_t subpel_shifts;
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InterpFilter interp_filter;
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} InterpFilterParams;
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InterpFilterParams av1_get_interp_filter_params(
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const InterpFilter interp_filter);
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const int16_t *av1_get_interp_filter_kernel(const InterpFilter interp_filter);
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static INLINE const int16_t *av1_get_interp_filter_subpel_kernel(
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const InterpFilterParams filter_params, const int subpel) {
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return filter_params.filter_ptr + filter_params.taps * subpel;
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}
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static INLINE int av1_is_interpolating_filter(
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const InterpFilter interp_filter) {
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const InterpFilterParams ip = av1_get_interp_filter_params(interp_filter);
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return (ip.filter_ptr[ip.taps / 2 - 1] == 128);
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}
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#if CONFIG_DUAL_FILTER
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InterpFilter av1_get_plane_interp_filter(InterpFilter interp_filter, int plane);
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#endif
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_COMMON_FILTER_H_
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