73 строки
2.2 KiB
C
73 строки
2.2 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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#if CONFIG_EXT_INTERP
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#define EIGHTTAP 0
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#define EIGHTTAP_SMOOTH 1
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#define EIGHTTAP_SHARP 2
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#define MULTITAP_SHARP EIGHTTAP_SHARP
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#define EIGHTTAP_SMOOTH2 3
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#define MULTITAP_SHARP2 4
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#define SWITCHABLE_FILTERS 5 /* Number of switchable filters */
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// (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS
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#define LOG_SWITCHABLE_FILTERS 3
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#else
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#define EIGHTTAP 0
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#define EIGHTTAP_SMOOTH 1
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#define EIGHTTAP_SHARP 2
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#define SWITCHABLE_FILTERS 3 /* Number of switchable filters */
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// (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS
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#define LOG_SWITCHABLE_FILTERS 2
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#endif // CONFIG_EXT_INTERP
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#define BILINEAR SWITCHABLE_FILTERS
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// The codec can operate in four possible inter prediction filter mode:
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// 8-tap, 8-tap-smooth, 8-tap-sharp, and switching between the three.
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#define SWITCHABLE_FILTER_CONTEXTS (SWITCHABLE_FILTERS + 1)
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#define SWITCHABLE (SWITCHABLE_FILTERS + 1) /* should be the last one */
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typedef uint8_t InterpFilter;
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extern const InterpKernel* av1_filter_kernels[4];
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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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} InterpFilterParams;
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static INLINE const int16_t* 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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InterpFilterParams get_interp_filter_params(InterpFilter interp_filter);
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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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