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Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/common/cdef.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/cdef.h b/third_party/aom/av1/common/cdef.h new file mode 100644 index 0000000000..a56cd9db4a --- /dev/null +++ b/third_party/aom/av1/common/cdef.h @@ -0,0 +1,112 @@ +/* + * 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_CDEF_H_ +#define AOM_AV1_COMMON_CDEF_H_ + +#define CDEF_STRENGTH_BITS 6 + +#define CDEF_PRI_STRENGTHS 16 +#define CDEF_SEC_STRENGTHS 4 + +#include "config/aom_config.h" + +#include "aom/aom_integer.h" +#include "aom_ports/mem.h" +#include "av1/common/av1_common_int.h" +#include "av1/common/cdef_block.h" + +enum { TOP, LEFT, BOTTOM, RIGHT, BOUNDARIES } UENUM1BYTE(BOUNDARY); + +struct AV1CdefSyncData; + +/*!\brief Parameters related to CDEF Block */ +typedef struct { + uint16_t *src; /*!< CDEF intermediate buffer */ + uint16_t *top_linebuf[MAX_MB_PLANE]; /*!< CDEF top line buffer */ + uint16_t *bot_linebuf[MAX_MB_PLANE]; /*!< CDEF bottom line buffer */ + uint8_t *dst; /*!< CDEF destination buffer */ + cdef_list + dlist[MI_SIZE_64X64 * MI_SIZE_64X64]; /*!< CDEF 8x8 block positions */ + + int xdec; /*!< Sub-sampling X */ + int ydec; /*!< Sub-sampling X */ + int mi_wide_l2; /*!< Pixels per mi unit in width */ + int mi_high_l2; /*!< Pixels per mi unit in height */ + int frame_boundary[BOUNDARIES]; /*!< frame boundaries */ + + int damping; /*!< CDEF damping factor */ + int coeff_shift; /*!< Bit-depth based shift for calculating filter strength */ + int level; /*!< CDEF filtering level */ + int sec_strength; /*!< CDEF secondary strength */ + int cdef_count; /*!< Number of CDEF sub-blocks in superblock */ + int dir[CDEF_NBLOCKS] + [CDEF_NBLOCKS]; /*!< CDEF filter direction for all 8x8 sub-blocks*/ + int var[CDEF_NBLOCKS][CDEF_NBLOCKS]; /*!< variance for all 8x8 sub-blocks */ + + int dst_stride; /*!< CDEF destination buffer stride */ + int coffset; /*!< current superblock offset in a row */ + int roffset; /*!< current row offset */ +} CdefBlockInfo; + +static INLINE int sign(int i) { return i < 0 ? -1 : 1; } + +static INLINE int constrain(int diff, int threshold, int damping) { + if (!threshold) return 0; + + const int shift = AOMMAX(0, damping - get_msb(threshold)); + return sign(diff) * + AOMMIN(abs(diff), AOMMAX(0, threshold - (abs(diff) >> shift))); +} + +#ifdef __cplusplus +extern "C" { +#endif + +int av1_cdef_compute_sb_list(const CommonModeInfoParams *const mi_params, + int mi_row, int mi_col, cdef_list *dlist, + BLOCK_SIZE bsize); + +typedef void (*cdef_init_fb_row_t)( + const AV1_COMMON *const cm, const MACROBLOCKD *const xd, + CdefBlockInfo *const fb_info, uint16_t **const linebuf, uint16_t *const src, + struct AV1CdefSyncData *const cdef_sync, int fbr); + +/*!\brief Function for applying CDEF to a frame + * + * \ingroup in_loop_cdef + * This function applies CDEF to a frame. + * + * \param[in, out] frame Compressed frame buffer + * \param[in, out] cm Pointer to top level common structure + * \param[in] xd Pointer to common current coding block structure + * \param[in] cdef_init_fb_row_fn Function Pointer + * + * \remark Nothing is returned. Instead, the filtered frame is output in + * \c frame. + */ +void av1_cdef_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *const cm, + MACROBLOCKD *xd, cdef_init_fb_row_t cdef_init_fb_row_fn); +void av1_cdef_fb_row(const AV1_COMMON *const cm, MACROBLOCKD *xd, + uint16_t **const linebuf, uint16_t **const colbuf, + uint16_t *const src, int fbr, + cdef_init_fb_row_t cdef_init_fb_row_fn, + struct AV1CdefSyncData *const cdef_sync, + struct aom_internal_error_info *error_info); +void av1_cdef_init_fb_row(const AV1_COMMON *const cm, + const MACROBLOCKD *const xd, + CdefBlockInfo *const fb_info, + uint16_t **const linebuf, uint16_t *const src, + struct AV1CdefSyncData *const cdef_sync, int fbr); + +#ifdef __cplusplus +} // extern "C" +#endif +#endif // AOM_AV1_COMMON_CDEF_H_ |