diff options
Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/common/filter.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/filter.h b/third_party/aom/av1/common/filter.h new file mode 100644 index 0000000000..571422d114 --- /dev/null +++ b/third_party/aom/av1/common/filter.h @@ -0,0 +1,214 @@ +/* + * 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 AOM_AV1_COMMON_FILTER_H_ +#define AOM_AV1_COMMON_FILTER_H_ + +#include <assert.h> + +#include "config/aom_config.h" + +#include "aom/aom_integer.h" +#include "aom_dsp/aom_filter.h" +#include "aom_ports/mem.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define MAX_FILTER_TAP 8 + +typedef enum ATTRIBUTE_PACKED { + EIGHTTAP_REGULAR, + EIGHTTAP_SMOOTH, + MULTITAP_SHARP, + BILINEAR, + INTERP_FILTERS_ALL, + SWITCHABLE_FILTERS = BILINEAR, + SWITCHABLE = SWITCHABLE_FILTERS + 1, /* the last switchable one */ + EXTRA_FILTERS = INTERP_FILTERS_ALL - SWITCHABLE_FILTERS, +} InterpFilter; + +// With CONFIG_DUAL_FILTER, pack two InterpFilter's into a uint32_t: since +// there are at most 10 filters, we can use 16 bits for each and have more than +// enough space. This reduces argument passing and unifies the operation of +// setting a (pair of) filters. +// +// Without CONFIG_DUAL_FILTER, +typedef uint32_t InterpFilters; +static INLINE InterpFilter av1_extract_interp_filter(InterpFilters filters, + int x_filter) { + return (InterpFilter)((filters >> (x_filter ? 16 : 0)) & 0xf); +} + +static INLINE InterpFilters av1_make_interp_filters(InterpFilter y_filter, + InterpFilter x_filter) { + uint16_t y16 = y_filter & 0xf; + uint16_t x16 = x_filter & 0xf; + return y16 | ((uint32_t)x16 << 16); +} + +static INLINE InterpFilters av1_broadcast_interp_filter(InterpFilter filter) { + return av1_make_interp_filters(filter, filter); +} + +static INLINE InterpFilter av1_unswitchable_filter(InterpFilter filter) { + return filter == SWITCHABLE ? EIGHTTAP_REGULAR : filter; +} + +/* (1 << LOG_SWITCHABLE_FILTERS) > SWITCHABLE_FILTERS */ +#define LOG_SWITCHABLE_FILTERS 2 + +#define MAX_SUBPEL_TAPS 12 +#define SWITCHABLE_FILTER_CONTEXTS ((SWITCHABLE_FILTERS + 1) * 4) +#define INTER_FILTER_COMP_OFFSET (SWITCHABLE_FILTERS + 1) +#define INTER_FILTER_DIR_OFFSET ((SWITCHABLE_FILTERS + 1) * 2) + +typedef struct InterpFilterParams { + const int16_t *filter_ptr; + uint16_t taps; + uint16_t subpel_shifts; + InterpFilter interp_filter; +} InterpFilterParams; + +DECLARE_ALIGNED(256, static const InterpKernel, + av1_bilinear_filters[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { 0, 0, 0, 120, 8, 0, 0, 0 }, + { 0, 0, 0, 112, 16, 0, 0, 0 }, { 0, 0, 0, 104, 24, 0, 0, 0 }, + { 0, 0, 0, 96, 32, 0, 0, 0 }, { 0, 0, 0, 88, 40, 0, 0, 0 }, + { 0, 0, 0, 80, 48, 0, 0, 0 }, { 0, 0, 0, 72, 56, 0, 0, 0 }, + { 0, 0, 0, 64, 64, 0, 0, 0 }, { 0, 0, 0, 56, 72, 0, 0, 0 }, + { 0, 0, 0, 48, 80, 0, 0, 0 }, { 0, 0, 0, 40, 88, 0, 0, 0 }, + { 0, 0, 0, 32, 96, 0, 0, 0 }, { 0, 0, 0, 24, 104, 0, 0, 0 }, + { 0, 0, 0, 16, 112, 0, 0, 0 }, { 0, 0, 0, 8, 120, 0, 0, 0 } +}; + +DECLARE_ALIGNED(256, static const InterpKernel, + av1_sub_pel_filters_8[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { 0, 2, -6, 126, 8, -2, 0, 0 }, + { 0, 2, -10, 122, 18, -4, 0, 0 }, { 0, 2, -12, 116, 28, -8, 2, 0 }, + { 0, 2, -14, 110, 38, -10, 2, 0 }, { 0, 2, -14, 102, 48, -12, 2, 0 }, + { 0, 2, -16, 94, 58, -12, 2, 0 }, { 0, 2, -14, 84, 66, -12, 2, 0 }, + { 0, 2, -14, 76, 76, -14, 2, 0 }, { 0, 2, -12, 66, 84, -14, 2, 0 }, + { 0, 2, -12, 58, 94, -16, 2, 0 }, { 0, 2, -12, 48, 102, -14, 2, 0 }, + { 0, 2, -10, 38, 110, -14, 2, 0 }, { 0, 2, -8, 28, 116, -12, 2, 0 }, + { 0, 0, -4, 18, 122, -10, 2, 0 }, { 0, 0, -2, 8, 126, -6, 2, 0 } +}; + +DECLARE_ALIGNED(256, static const InterpKernel, + av1_sub_pel_filters_8sharp[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { -2, 2, -6, 126, 8, -2, 2, 0 }, + { -2, 6, -12, 124, 16, -6, 4, -2 }, { -2, 8, -18, 120, 26, -10, 6, -2 }, + { -4, 10, -22, 116, 38, -14, 6, -2 }, { -4, 10, -22, 108, 48, -18, 8, -2 }, + { -4, 10, -24, 100, 60, -20, 8, -2 }, { -4, 10, -24, 90, 70, -22, 10, -2 }, + { -4, 12, -24, 80, 80, -24, 12, -4 }, { -2, 10, -22, 70, 90, -24, 10, -4 }, + { -2, 8, -20, 60, 100, -24, 10, -4 }, { -2, 8, -18, 48, 108, -22, 10, -4 }, + { -2, 6, -14, 38, 116, -22, 10, -4 }, { -2, 6, -10, 26, 120, -18, 8, -2 }, + { -2, 4, -6, 16, 124, -12, 6, -2 }, { 0, 2, -2, 8, 126, -6, 2, -2 } +}; + +DECLARE_ALIGNED(256, static const InterpKernel, + av1_sub_pel_filters_8smooth[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { 0, 2, 28, 62, 34, 2, 0, 0 }, + { 0, 0, 26, 62, 36, 4, 0, 0 }, { 0, 0, 22, 62, 40, 4, 0, 0 }, + { 0, 0, 20, 60, 42, 6, 0, 0 }, { 0, 0, 18, 58, 44, 8, 0, 0 }, + { 0, 0, 16, 56, 46, 10, 0, 0 }, { 0, -2, 16, 54, 48, 12, 0, 0 }, + { 0, -2, 14, 52, 52, 14, -2, 0 }, { 0, 0, 12, 48, 54, 16, -2, 0 }, + { 0, 0, 10, 46, 56, 16, 0, 0 }, { 0, 0, 8, 44, 58, 18, 0, 0 }, + { 0, 0, 6, 42, 60, 20, 0, 0 }, { 0, 0, 4, 40, 62, 22, 0, 0 }, + { 0, 0, 4, 36, 62, 26, 0, 0 }, { 0, 0, 2, 34, 62, 28, 2, 0 } +}; + +static const InterpFilterParams + av1_interp_filter_params_list[SWITCHABLE_FILTERS + 1] = { + { (const int16_t *)av1_sub_pel_filters_8, SUBPEL_TAPS, SUBPEL_SHIFTS, + EIGHTTAP_REGULAR }, + { (const int16_t *)av1_sub_pel_filters_8smooth, SUBPEL_TAPS, + SUBPEL_SHIFTS, EIGHTTAP_SMOOTH }, + { (const int16_t *)av1_sub_pel_filters_8sharp, SUBPEL_TAPS, SUBPEL_SHIFTS, + MULTITAP_SHARP }, + { (const int16_t *)av1_bilinear_filters, SUBPEL_TAPS, SUBPEL_SHIFTS, + BILINEAR } + }; + +// A special 2-tap bilinear filter for IntraBC chroma. IntraBC uses full pixel +// MV for luma. If sub-sampling exists, chroma may possibly use half-pel MV. +DECLARE_ALIGNED(256, static const int16_t, av1_intrabc_bilinear_filter[2]) = { + 64, + 64, +}; + +static const InterpFilterParams av1_intrabc_filter_params = { + av1_intrabc_bilinear_filter, 2, 0, BILINEAR +}; + +DECLARE_ALIGNED(256, static const InterpKernel, + av1_sub_pel_filters_4[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { 0, 0, -4, 126, 8, -2, 0, 0 }, + { 0, 0, -8, 122, 18, -4, 0, 0 }, { 0, 0, -10, 116, 28, -6, 0, 0 }, + { 0, 0, -12, 110, 38, -8, 0, 0 }, { 0, 0, -12, 102, 48, -10, 0, 0 }, + { 0, 0, -14, 94, 58, -10, 0, 0 }, { 0, 0, -12, 84, 66, -10, 0, 0 }, + { 0, 0, -12, 76, 76, -12, 0, 0 }, { 0, 0, -10, 66, 84, -12, 0, 0 }, + { 0, 0, -10, 58, 94, -14, 0, 0 }, { 0, 0, -10, 48, 102, -12, 0, 0 }, + { 0, 0, -8, 38, 110, -12, 0, 0 }, { 0, 0, -6, 28, 116, -10, 0, 0 }, + { 0, 0, -4, 18, 122, -8, 0, 0 }, { 0, 0, -2, 8, 126, -4, 0, 0 } +}; +DECLARE_ALIGNED(256, static const InterpKernel, + av1_sub_pel_filters_4smooth[SUBPEL_SHIFTS]) = { + { 0, 0, 0, 128, 0, 0, 0, 0 }, { 0, 0, 30, 62, 34, 2, 0, 0 }, + { 0, 0, 26, 62, 36, 4, 0, 0 }, { 0, 0, 22, 62, 40, 4, 0, 0 }, + { 0, 0, 20, 60, 42, 6, 0, 0 }, { 0, 0, 18, 58, 44, 8, 0, 0 }, + { 0, 0, 16, 56, 46, 10, 0, 0 }, { 0, 0, 14, 54, 48, 12, 0, 0 }, + { 0, 0, 12, 52, 52, 12, 0, 0 }, { 0, 0, 12, 48, 54, 14, 0, 0 }, + { 0, 0, 10, 46, 56, 16, 0, 0 }, { 0, 0, 8, 44, 58, 18, 0, 0 }, + { 0, 0, 6, 42, 60, 20, 0, 0 }, { 0, 0, 4, 40, 62, 22, 0, 0 }, + { 0, 0, 4, 36, 62, 26, 0, 0 }, { 0, 0, 2, 34, 62, 30, 0, 0 } +}; + +// For w<=4, MULTITAP_SHARP is the same as EIGHTTAP_REGULAR +static const InterpFilterParams av1_interp_4tap[SWITCHABLE_FILTERS + 1] = { + { (const int16_t *)av1_sub_pel_filters_4, SUBPEL_TAPS, SUBPEL_SHIFTS, + EIGHTTAP_REGULAR }, + { (const int16_t *)av1_sub_pel_filters_4smooth, SUBPEL_TAPS, SUBPEL_SHIFTS, + EIGHTTAP_SMOOTH }, + { (const int16_t *)av1_sub_pel_filters_4, SUBPEL_TAPS, SUBPEL_SHIFTS, + EIGHTTAP_REGULAR }, + { (const int16_t *)av1_bilinear_filters, SUBPEL_TAPS, SUBPEL_SHIFTS, + BILINEAR }, +}; + +static INLINE const InterpFilterParams * +av1_get_interp_filter_params_with_block_size(const InterpFilter interp_filter, + const int w) { + if (w <= 4) return &av1_interp_4tap[interp_filter]; + return &av1_interp_filter_params_list[interp_filter]; +} + +static INLINE const InterpFilterParams *av1_get_4tap_interp_filter_params( + const InterpFilter interp_filter) { + return &av1_interp_4tap[interp_filter]; +} + +static INLINE const int16_t *av1_get_interp_filter_kernel( + const InterpFilter interp_filter) { + return av1_interp_filter_params_list[interp_filter].filter_ptr; +} + +static INLINE const int16_t *av1_get_interp_filter_subpel_kernel( + const InterpFilterParams *const filter_params, const int subpel) { + return filter_params->filter_ptr + filter_params->taps * subpel; +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_COMMON_FILTER_H_ |