ref: 7e491de1c487186bd2adb6b6907b8d0d1869f846
dir: /vp9/common/vp9_blockd.h/
/*
* Copyright (c) 2010 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 VP9_COMMON_VP9_BLOCKD_H_
#define VP9_COMMON_VP9_BLOCKD_H_
#include "./vpx_config.h"
#include "vpx_ports/mem.h"
#include "vpx_scale/yv12config.h"
#include "vp9/common/vp9_common_data.h"
#include "vp9/common/vp9_filter.h"
#include "vp9/common/vp9_mv.h"
#include "vp9/common/vp9_scale.h"
#ifdef __cplusplus
extern "C" {
#endif
#define BLOCK_SIZE_GROUPS 4
#define SKIP_CONTEXTS 3
#define INTER_MODE_CONTEXTS 7
/* Segment Feature Masks */
#define MAX_MV_REF_CANDIDATES 2
#define INTRA_INTER_CONTEXTS 4
#define COMP_INTER_CONTEXTS 5
#define REF_CONTEXTS 5
typedef enum {
PLANE_TYPE_Y = 0,
PLANE_TYPE_UV = 1,
PLANE_TYPES
} PLANE_TYPE;
#define MAX_MB_PLANE 3
typedef char ENTROPY_CONTEXT;
static INLINE int combine_entropy_contexts(ENTROPY_CONTEXT a,
ENTROPY_CONTEXT b) {
return (a != 0) + (b != 0);
}
typedef enum {
KEY_FRAME = 0,
INTER_FRAME = 1,
FRAME_TYPES,
} FRAME_TYPE;
typedef enum {
DC_PRED, // Average of above and left pixels
V_PRED, // Vertical
H_PRED, // Horizontal
D45_PRED, // Directional 45 deg = round(arctan(1/1) * 180/pi)
D135_PRED, // Directional 135 deg = 180 - 45
D117_PRED, // Directional 117 deg = 180 - 63
D153_PRED, // Directional 153 deg = 180 - 27
D207_PRED, // Directional 207 deg = 180 + 27
D63_PRED, // Directional 63 deg = round(arctan(2/1) * 180/pi)
TM_PRED, // True-motion
NEARESTMV,
NEARMV,
ZEROMV,
NEWMV,
MB_MODE_COUNT
} PREDICTION_MODE;
static INLINE int is_inter_mode(PREDICTION_MODE mode) {
return mode >= NEARESTMV && mode <= NEWMV;
}
#define INTRA_MODES (TM_PRED + 1)
#define INTER_MODES (1 + NEWMV - NEARESTMV)
#define INTER_OFFSET(mode) ((mode) - NEARESTMV)
/* For keyframes, intra block modes are predicted by the (already decoded)
modes for the Y blocks to the left and above us; for interframes, there
is a single probability table. */
typedef struct {
PREDICTION_MODE as_mode;
int_mv as_mv[2]; // first, second inter predictor motion vectors
} b_mode_info;
// Note that the rate-distortion optimization loop, bit-stream writer, and
// decoder implementation modules critically rely on the enum entry values
// specified herein. They should be refactored concurrently.
typedef enum {
NONE = -1,
INTRA_FRAME = 0,
LAST_FRAME = 1,
GOLDEN_FRAME = 2,
ALTREF_FRAME = 3,
MAX_REF_FRAMES = 4
} MV_REFERENCE_FRAME;
// This structure now relates to 8x8 block regions.
typedef struct {
// Common for both INTER and INTRA blocks
BLOCK_SIZE sb_type;
PREDICTION_MODE mode;
TX_SIZE tx_size;
int8_t skip;
int8_t segment_id;
int8_t seg_id_predicted; // valid only when temporal_update is enabled
// Only for INTRA blocks
PREDICTION_MODE uv_mode;
// Only for INTER blocks
MV_REFERENCE_FRAME ref_frame[2];
int_mv mv[2];
int_mv ref_mvs[MAX_REF_FRAMES][MAX_MV_REF_CANDIDATES];
uint8_t mode_context[MAX_REF_FRAMES];
INTERP_FILTER interp_filter;
} MB_MODE_INFO;
typedef struct MODE_INFO {
struct MODE_INFO *src_mi;
MB_MODE_INFO mbmi;
b_mode_info bmi[4];
} MODE_INFO;
static INLINE PREDICTION_MODE get_y_mode(const MODE_INFO *mi, int block) {
return mi->mbmi.sb_type < BLOCK_8X8 ? mi->bmi[block].as_mode
: mi->mbmi.mode;
}
static INLINE int is_inter_block(const MB_MODE_INFO *mbmi) {
return mbmi->ref_frame[0] > INTRA_FRAME;
}
static INLINE int has_second_ref(const MB_MODE_INFO *mbmi) {
return mbmi->ref_frame[1] > INTRA_FRAME;
}
PREDICTION_MODE vp9_left_block_mode(const MODE_INFO *cur_mi,
const MODE_INFO *left_mi, int b);
PREDICTION_MODE vp9_above_block_mode(const MODE_INFO *cur_mi,
const MODE_INFO *above_mi, int b);
enum mv_precision {
MV_PRECISION_Q3,
MV_PRECISION_Q4
};
struct buf_2d {
uint8_t *buf;
int stride;
};
struct macroblockd_plane {
tran_low_t *dqcoeff;
PLANE_TYPE plane_type;
int subsampling_x;
int subsampling_y;
struct buf_2d dst;
struct buf_2d pre[2];
const int16_t *dequant;
ENTROPY_CONTEXT *above_context;
ENTROPY_CONTEXT *left_context;
};
#define BLOCK_OFFSET(x, i) ((x) + (i) * 16)
typedef struct RefBuffer {
// TODO(dkovalev): idx is not really required and should be removed, now it
// is used in vp9_onyxd_if.c
int idx;
YV12_BUFFER_CONFIG *buf;
struct scale_factors sf;
} RefBuffer;
typedef struct macroblockd {
struct macroblockd_plane plane[MAX_MB_PLANE];
int mi_stride;
MODE_INFO *mi;
int up_available;
int left_available;
/* Distance of MB away from frame edges */
int mb_to_left_edge;
int mb_to_right_edge;
int mb_to_top_edge;
int mb_to_bottom_edge;
/* pointers to reference frames */
RefBuffer *block_refs[2];
/* pointer to current frame */
const YV12_BUFFER_CONFIG *cur_buf;
/* mc buffer */
DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]);
#if CONFIG_VP9_HIGHBITDEPTH
/* Bit depth: 8, 10, 12 */
int bd;
DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]);
#endif
int lossless;
int corrupted;
DECLARE_ALIGNED(16, tran_low_t, dqcoeff[MAX_MB_PLANE][64 * 64]);
ENTROPY_CONTEXT *above_context[MAX_MB_PLANE];
ENTROPY_CONTEXT left_context[MAX_MB_PLANE][16];
PARTITION_CONTEXT *above_seg_context;
PARTITION_CONTEXT left_seg_context[8];
} MACROBLOCKD;
static INLINE BLOCK_SIZE get_subsize(BLOCK_SIZE bsize,
PARTITION_TYPE partition) {
return subsize_lookup[partition][bsize];
}
extern const TX_TYPE intra_mode_to_tx_type_lookup[INTRA_MODES];
static INLINE TX_TYPE get_tx_type(PLANE_TYPE plane_type,
const MACROBLOCKD *xd) {
const MB_MODE_INFO *const mbmi = &xd->mi[0].src_mi->mbmi;
if (plane_type != PLANE_TYPE_Y || is_inter_block(mbmi))
return DCT_DCT;
return intra_mode_to_tx_type_lookup[mbmi->mode];
}
static INLINE TX_TYPE get_tx_type_4x4(PLANE_TYPE plane_type,
const MACROBLOCKD *xd, int ib) {
const MODE_INFO *const mi = xd->mi[0].src_mi;
if (plane_type != PLANE_TYPE_Y || xd->lossless || is_inter_block(&mi->mbmi))
return DCT_DCT;
return intra_mode_to_tx_type_lookup[get_y_mode(mi, ib)];
}
void vp9_setup_block_planes(MACROBLOCKD *xd, int ss_x, int ss_y);
static INLINE TX_SIZE get_uv_tx_size_impl(TX_SIZE y_tx_size, BLOCK_SIZE bsize,
int xss, int yss) {
if (bsize < BLOCK_8X8) {
return TX_4X4;
} else {
const BLOCK_SIZE plane_bsize = ss_size_lookup[bsize][xss][yss];
return MIN(y_tx_size, max_txsize_lookup[plane_bsize]);
}
}
static INLINE TX_SIZE get_uv_tx_size(const MB_MODE_INFO *mbmi,
const struct macroblockd_plane *pd) {
return get_uv_tx_size_impl(mbmi->tx_size, mbmi->sb_type, pd->subsampling_x,
pd->subsampling_y);
}
static INLINE BLOCK_SIZE get_plane_block_size(BLOCK_SIZE bsize,
const struct macroblockd_plane *pd) {
return ss_size_lookup[bsize][pd->subsampling_x][pd->subsampling_y];
}
typedef void (*foreach_transformed_block_visitor)(int plane, int block,
BLOCK_SIZE plane_bsize,
TX_SIZE tx_size,
void *arg);
void vp9_foreach_transformed_block_in_plane(
const MACROBLOCKD *const xd, BLOCK_SIZE bsize, int plane,
foreach_transformed_block_visitor visit, void *arg);
void vp9_foreach_transformed_block(
const MACROBLOCKD* const xd, BLOCK_SIZE bsize,
foreach_transformed_block_visitor visit, void *arg);
static INLINE void txfrm_block_to_raster_xy(BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, int block,
int *x, int *y) {
const int bwl = b_width_log2_lookup[plane_bsize];
const int tx_cols_log2 = bwl - tx_size;
const int tx_cols = 1 << tx_cols_log2;
const int raster_mb = block >> (tx_size << 1);
*x = (raster_mb & (tx_cols - 1)) << tx_size;
*y = (raster_mb >> tx_cols_log2) << tx_size;
}
void vp9_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd,
BLOCK_SIZE plane_bsize, TX_SIZE tx_size, int has_eob,
int aoff, int loff);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP9_COMMON_VP9_BLOCKD_H_