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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/odintrin.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/odintrin.h b/third_party/aom/aom_dsp/odintrin.h new file mode 100644 index 0000000000..9e4ba5029a --- /dev/null +++ b/third_party/aom/aom_dsp/odintrin.h @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2001-2016, 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. + */ + +/* clang-format off */ + +#ifndef AOM_AOM_DSP_ODINTRIN_H_ +#define AOM_AOM_DSP_ODINTRIN_H_ + +#include <stdlib.h> +#include <string.h> + +#include "aom/aom_integer.h" +#include "aom_dsp/aom_dsp_common.h" +#include "aom_ports/bitops.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef int od_coeff; + +#define OD_DIVU_DMAX (1024) + +extern uint32_t OD_DIVU_SMALL_CONSTS[OD_DIVU_DMAX][2]; + +/*Translate unsigned division by small divisors into multiplications.*/ +#define OD_DIVU_SMALL(_x, _d) \ + ((uint32_t)((OD_DIVU_SMALL_CONSTS[(_d)-1][0] * (uint64_t)(_x) + \ + OD_DIVU_SMALL_CONSTS[(_d)-1][1]) >> \ + 32) >> \ + (OD_ILOG_NZ(_d) - 1)) + +#define OD_DIVU(_x, _d) \ + (((_d) < OD_DIVU_DMAX) ? (OD_DIVU_SMALL((_x), (_d))) : ((_x) / (_d))) + +#define OD_MINI AOMMIN +#define OD_MAXI AOMMAX +#define OD_CLAMPI(min, val, max) (OD_MAXI(min, OD_MINI(val, max))) + +/*Integer logarithm (base 2) of a nonzero unsigned 32-bit integer. + OD_ILOG_NZ(x) = (int)floor(log2(x)) + 1.*/ +#define OD_ILOG_NZ(x) (1 + get_msb(x)) + +/*Enable special features for gcc and compatible compilers.*/ +#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__) +#define OD_GNUC_PREREQ(maj, min, pat) \ + ((__GNUC__ << 16) + (__GNUC_MINOR__ << 8) + __GNUC_PATCHLEVEL__ >= \ + ((maj) << 16) + ((min) << 8) + pat) // NOLINT +#else +#define OD_GNUC_PREREQ(maj, min, pat) (0) +#endif + +#if OD_GNUC_PREREQ(3, 4, 0) +#define OD_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__)) +#else +#define OD_WARN_UNUSED_RESULT +#endif + +#if OD_GNUC_PREREQ(3, 4, 0) +#define OD_ARG_NONNULL(x) __attribute__((__nonnull__(x))) +#else +#define OD_ARG_NONNULL(x) +#endif + +/*All of these macros should expect floats as arguments.*/ +# define OD_SIGNMASK(a) (-((a) < 0)) +# define OD_FLIPSIGNI(a, b) (((a) + OD_SIGNMASK(b)) ^ OD_SIGNMASK(b)) + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AOM_DSP_ODINTRIN_H_ |