diff options
Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/encoder/encodemv.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/encodemv.h b/third_party/aom/av1/encoder/encodemv.h new file mode 100644 index 0000000000..c39001a5a2 --- /dev/null +++ b/third_party/aom/av1/encoder/encodemv.h @@ -0,0 +1,110 @@ +/* + * 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_ENCODER_ENCODEMV_H_ +#define AOM_AV1_ENCODER_ENCODEMV_H_ + +#include "av1/encoder/encoder.h" + +#ifdef __cplusplus +extern "C" { +#endif + +void av1_encode_mv(AV1_COMP *cpi, aom_writer *w, ThreadData *td, const MV *mv, + const MV *ref, nmv_context *mvctx, int usehp); + +void av1_update_mv_stats(const MV *mv, const MV *ref, nmv_context *mvctx, + MvSubpelPrecision precision); + +void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2], + const nmv_context *mvctx, + MvSubpelPrecision precision); +void av1_build_nmv_component_cost_table(int *mvcost, + const nmv_component *const mvcomp, + MvSubpelPrecision precision); + +void av1_update_mv_count(ThreadData *td); + +void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref, + nmv_context *mvctx); +int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx); +int_mv av1_get_ref_mv_from_stack(int ref_idx, + const MV_REFERENCE_FRAME *ref_frame, + int ref_mv_idx, + const MB_MODE_INFO_EXT *mbmi_ext); +void av1_find_best_ref_mvs_from_stack(int allow_hp, + const MB_MODE_INFO_EXT *mbmi_ext, + MV_REFERENCE_FRAME ref_frame, + int_mv *nearest_mv, int_mv *near_mv, + int is_integer); + +static INLINE MV_JOINT_TYPE av1_get_mv_joint(const MV *mv) { + // row: Z col: Z | MV_JOINT_ZERO (0) + // row: Z col: NZ | MV_JOINT_HNZVZ (1) + // row: NZ col: Z | MV_JOINT_HZVNZ (2) + // row: NZ col: NZ | MV_JOINT_HNZVNZ (3) + return (!!mv->col) | ((!!mv->row) << 1); +} + +static INLINE int av1_mv_class_base(MV_CLASS_TYPE c) { + return c ? CLASS0_SIZE << (c + 2) : 0; +} + +// If n != 0, returns the floor of log base 2 of n. If n == 0, returns 0. +static INLINE uint8_t av1_log_in_base_2(unsigned int n) { + // get_msb() is only valid when n != 0. + return n == 0 ? 0 : get_msb(n); +} + +static INLINE MV_CLASS_TYPE av1_get_mv_class(int z, int *offset) { + assert(z >= 0); + const MV_CLASS_TYPE c = (MV_CLASS_TYPE)av1_log_in_base_2(z >> 3); + assert(c <= MV_CLASS_10); + if (offset) *offset = z - av1_mv_class_base(c); + return c; +} + +static INLINE int av1_check_newmv_joint_nonzero(const AV1_COMMON *cm, + MACROBLOCK *const x) { + (void)cm; + MACROBLOCKD *xd = &x->e_mbd; + MB_MODE_INFO *mbmi = xd->mi[0]; + const PREDICTION_MODE this_mode = mbmi->mode; + if (this_mode == NEW_NEWMV) { + const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); + const int_mv ref_mv_1 = av1_get_ref_mv(x, 1); + if (mbmi->mv[0].as_int == ref_mv_0.as_int || + mbmi->mv[1].as_int == ref_mv_1.as_int) { + return 0; + } + } else if (this_mode == NEAREST_NEWMV || this_mode == NEAR_NEWMV) { + const int_mv ref_mv_1 = av1_get_ref_mv(x, 1); + if (mbmi->mv[1].as_int == ref_mv_1.as_int) { + return 0; + } + } else if (this_mode == NEW_NEARESTMV || this_mode == NEW_NEARMV) { + const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); + if (mbmi->mv[0].as_int == ref_mv_0.as_int) { + return 0; + } + } else if (this_mode == NEWMV) { + const int_mv ref_mv_0 = av1_get_ref_mv(x, 0); + if (mbmi->mv[0].as_int == ref_mv_0.as_int) { + return 0; + } + } + return 1; +} +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_AV1_ENCODER_ENCODEMV_H_ |