ref: 8cb34dd640b1bae1ddb74296d6415547ab7f230d
dir: /vpx_dsp/vpx_filter.h/
/* * Copyright (c) 2015 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VPX_VPX_DSP_VPX_FILTER_H_ #define VPX_VPX_DSP_VPX_FILTER_H_ #include <assert.h> #include "vpx/vpx_integer.h" #ifdef __cplusplus extern "C" { #endif #define FILTER_BITS 7 #define SUBPEL_BITS 4 #define SUBPEL_MASK ((1 << SUBPEL_BITS) - 1) #define SUBPEL_SHIFTS (1 << SUBPEL_BITS) #define SUBPEL_TAPS 8 typedef int16_t InterpKernel[SUBPEL_TAPS]; static INLINE int vpx_get_filter_taps(const int16_t *const filter) { assert(filter[3] != 128); if (!filter[0] && !filter[1] && !filter[2]) return 2; else return 8; } #ifdef __cplusplus } // extern "C" #endif #endif // VPX_VPX_DSP_VPX_FILTER_H_