ref: e53dc9f2ea81c8f84c90f8acc6ba70f03b37647b
dir: libvpx/vp9/common/vp9_pred_common.h
/*
* Copyright (c) 2012 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_VP9_COMMON_VP9_PRED_COMMON_H_
#define VPX_VP9_COMMON_VP9_PRED_COMMON_H_
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vpx_dsp/vpx_dsp_common.h"
#ifdef __cplusplus
extern "C" {
#endif
static INLINE int get_segment_id(const VP9_COMMON *cm,
const uint8_t *segment_ids, BLOCK_SIZE bsize,
int mi_row, int mi_col) {
const int mi_offset = mi_row * cm->mi_cols + mi_col;
const int bw = num_8x8_blocks_wide_lookup[bsize];
const int bh = num_8x8_blocks_high_lookup[bsize];
const int xmis = VPXMIN(cm->mi_cols - mi_col, bw);
const int ymis = VPXMIN(cm->mi_rows - mi_row, bh);
int x, y, segment_id = MAX_SEGMENTS;
for (y = 0; y < ymis; ++y)
for (x = 0; x < xmis; ++x)
segment_id =
VPXMIN(segment_id, segment_ids[mi_offset + y * cm->mi_cols + x]);
assert(segment_id >= 0 && segment_id < MAX_SEGMENTS);
return segment_id;
}
static INLINE int vp9_get_pred_context_seg_id(const MACROBLOCKD *xd) {
const MODE_INFO *const above_mi = xd->above_mi;
const MODE_INFO *const left_mi = xd->left_mi;
const int above_sip = (above_mi != NULL) ? above_mi->seg_id_predicted : 0;
const int left_sip = (left_mi != NULL) ? left_mi->seg_id_predicted : 0;
return above_sip + left_sip;
}
static INLINE vpx_prob vp9_get_pred_prob_seg_id(const struct segmentation *seg,
const MACROBLOCKD *xd) {
return seg->pred_probs[vp9_get_pred_context_seg_id(xd)];
}
static INLINE int vp9_get_skip_context(const MACROBLOCKD *xd) {
const MODE_INFO *const above_mi = xd->above_mi;
const MODE_INFO *const left_mi = xd->left_mi;
const int above_skip = (above_mi != NULL) ? above_mi->skip : 0;
const int left_skip = (left_mi != NULL) ? left_mi->skip : 0;
return above_skip + left_skip;
}
static INLINE vpx_prob vp9_get_skip_prob(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
return cm->fc->skip_probs[vp9_get_skip_context(xd)];
}
// Returns a context number for the given MB prediction signal
static INLINE int get_pred_context_switchable_interp(const MACROBLOCKD *xd) {
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries corresponding to real macroblocks.
// The prediction flags in these dummy entries are initialized to 0.
const MODE_INFO *const left_mi = xd->left_mi;
const int left_type = left_mi ? left_mi->interp_filter : SWITCHABLE_FILTERS;
const MODE_INFO *const above_mi = xd->above_mi;
const int above_type =
above_mi ? above_mi->interp_filter : SWITCHABLE_FILTERS;
if (left_type == above_type)
return left_type;
else if (left_type == SWITCHABLE_FILTERS)
return above_type;
else if (above_type == SWITCHABLE_FILTERS)
return left_type;
else
return SWITCHABLE_FILTERS;
}
// The mode info data structure has a one element border above and to the
// left of the entries corresponding to real macroblocks.
// The prediction flags in these dummy entries are initialized to 0.
// 0 - inter/inter, inter/--, --/inter, --/--
// 1 - intra/inter, inter/intra
// 2 - intra/--, --/intra
// 3 - intra/intra
static INLINE int get_intra_inter_context(const MACROBLOCKD *xd) {
const MODE_INFO *const above_mi = xd->above_mi;
const MODE_INFO *const left_mi = xd->left_mi;
const int has_above = !!above_mi;
const int has_left = !!left_mi;
if (has_above && has_left) { // both edges available
const int above_intra = !is_inter_block(above_mi);
const int left_intra = !is_inter_block(left_mi);
return left_intra && above_intra ? 3 : left_intra || above_intra;
} else if (has_above || has_left) { // one edge available
return 2 * !is_inter_block(has_above ? above_mi : left_mi);
}
return 0;
}
static INLINE vpx_prob vp9_get_intra_inter_prob(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
return cm->fc->intra_inter_prob[get_intra_inter_context(xd)];
}
int vp9_get_reference_mode_context(const VP9_COMMON *cm, const MACROBLOCKD *xd);
static INLINE vpx_prob vp9_get_reference_mode_prob(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
return cm->fc->comp_inter_prob[vp9_get_reference_mode_context(cm, xd)];
}
int vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm,
const MACROBLOCKD *xd);
static INLINE vpx_prob vp9_get_pred_prob_comp_ref_p(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
const int pred_context = vp9_get_pred_context_comp_ref_p(cm, xd);
return cm->fc->comp_ref_prob[pred_context];
}
int vp9_get_pred_context_single_ref_p1(const MACROBLOCKD *xd);
static INLINE vpx_prob vp9_get_pred_prob_single_ref_p1(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p1(xd)][0];
}
int vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd);
static INLINE vpx_prob vp9_get_pred_prob_single_ref_p2(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
return cm->fc->single_ref_prob[vp9_get_pred_context_single_ref_p2(xd)][1];
}
int vp9_compound_reference_allowed(const VP9_COMMON *cm);
void vp9_setup_compound_reference_mode(VP9_COMMON *cm);
// Returns a context number for the given MB prediction signal
// The mode info data structure has a one element border above and to the
// left of the entries corresponding to real blocks.
// The prediction flags in these dummy entries are initialized to 0.
static INLINE int get_tx_size_context(const MACROBLOCKD *xd) {
const int max_tx_size = max_txsize_lookup[xd->mi[0]->sb_type];
const MODE_INFO *const above_mi = xd->above_mi;
const MODE_INFO *const left_mi = xd->left_mi;
const int has_above = !!above_mi;
const int has_left = !!left_mi;
int above_ctx =
(has_above && !above_mi->skip) ? (int)above_mi->tx_size : max_tx_size;
int left_ctx =
(has_left && !left_mi->skip) ? (int)left_mi->tx_size : max_tx_size;
if (!has_left) left_ctx = above_ctx;
if (!has_above) above_ctx = left_ctx;
return (above_ctx + left_ctx) > max_tx_size;
}
static INLINE const vpx_prob *get_tx_probs(TX_SIZE max_tx_size, int ctx,
const struct tx_probs *tx_probs) {
switch (max_tx_size) {
case TX_8X8: return tx_probs->p8x8[ctx];
case TX_16X16: return tx_probs->p16x16[ctx];
case TX_32X32: return tx_probs->p32x32[ctx];
default: assert(0 && "Invalid max_tx_size."); return NULL;
}
}
static INLINE unsigned int *get_tx_counts(TX_SIZE max_tx_size, int ctx,
struct tx_counts *tx_counts) {
switch (max_tx_size) {
case TX_8X8: return tx_counts->p8x8[ctx];
case TX_16X16: return tx_counts->p16x16[ctx];
case TX_32X32: return tx_counts->p32x32[ctx];
default: assert(0 && "Invalid max_tx_size."); return NULL;
}
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VP9_COMMON_VP9_PRED_COMMON_H_