Commit fb027a76 authored by Jim Bankoski's avatar Jim Bankoski Committed by Gerrit Code Review

removing case statements around prediction entropy coding

Removes SEG_ID
Removes MBSKIP
Removes SWITCHABLE_INTERP
Removes INTRA_INTER
Removes COMP_INTER_INTER
Removes COMP_REF_P
Removes SINGLE_REF_P1
Removes SINGLE_REF_P2
Removes TX_SIZE

Change-Id: Ie4520ae1f65c8cac312432c0616cc80dea5bf34b
parent 059f2929
......@@ -16,11 +16,67 @@
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_treecoder.h"
// TBD prediction functions for various bitstream signals
void vp9_set_pred_flag_seg_id(MACROBLOCKD *xd, BLOCK_SIZE_TYPE bsize,
unsigned char pred_flag) {
const int mis = xd->mode_info_stride;
const int bh = 1 << mi_height_log2(bsize);
const int bw = 1 << mi_width_log2(bsize);
#define sub(a, b) (b) < 0 ? (a) + (b) : (a)
const int x_mis = sub(bw, xd->mb_to_right_edge >> (3 + LOG2_MI_SIZE));
const int y_mis = sub(bh, xd->mb_to_bottom_edge >> (3 + LOG2_MI_SIZE));
#undef sub
int x, y;
for (y = 0; y < y_mis; y++)
for (x = 0; x < x_mis; x++)
xd->mode_info_context[y * mis + x].mbmi.seg_id_predicted = pred_flag;
}
// Returns a context number for the given MB prediction signal
unsigned char vp9_get_pred_context_switchable_interp(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO * const mi = xd->mode_info_context;
const MODE_INFO * const above_mi = mi - cm->mode_info_stride;
const MODE_INFO * const left_mi = mi - 1;
const int left_in_image = xd->left_available && left_mi->mbmi.mb_in_image;
const int above_in_image = xd->up_available && above_mi->mbmi.mb_in_image;
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
// left
const int left_mv_pred = is_inter_mode(left_mi->mbmi.mode);
const int left_interp =
left_in_image && left_mv_pred ?
vp9_switchable_interp_map[left_mi->mbmi.interp_filter] :
VP9_SWITCHABLE_FILTERS;
// above
const int above_mv_pred = is_inter_mode(above_mi->mbmi.mode);
const int above_interp =
above_in_image && above_mv_pred ?
vp9_switchable_interp_map[above_mi->mbmi.interp_filter] :
VP9_SWITCHABLE_FILTERS;
assert(left_interp != -1);
assert(above_interp != -1);
if (left_interp == above_interp)
pred_context = left_interp;
else if (left_interp == VP9_SWITCHABLE_FILTERS
&& above_interp != VP9_SWITCHABLE_FILTERS)
pred_context = above_interp;
else if (left_interp != VP9_SWITCHABLE_FILTERS
&& above_interp == VP9_SWITCHABLE_FILTERS)
pred_context = left_interp;
else
pred_context = VP9_SWITCHABLE_FILTERS;
return pred_context;
}
// Returns a context number for the given MB prediction signal
unsigned char vp9_get_pred_context(const VP9_COMMON *cm, const MACROBLOCKD *xd,
PRED_ID pred_id) {
unsigned char vp9_get_pred_context_intra_inter(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO *const mi = xd->mode_info_context;
const MODE_INFO *const above_mi = mi - cm->mode_info_stride;
......@@ -31,431 +87,381 @@ unsigned char vp9_get_pred_context(const VP9_COMMON *cm, const MACROBLOCKD *xd,
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
switch (pred_id) {
case PRED_SEG_ID:
pred_context = above_mi->mbmi.seg_id_predicted;
if (xd->left_available)
pred_context += left_mi->mbmi.seg_id_predicted;
break;
case PRED_MBSKIP:
pred_context = above_mi->mbmi.mb_skip_coeff;
if (xd->left_available)
pred_context += left_mi->mbmi.mb_skip_coeff;
break;
case PRED_SWITCHABLE_INTERP: {
// left
const int left_mv_pred = is_inter_mode(left_mi->mbmi.mode);
const int left_interp = left_in_image && left_mv_pred ?
vp9_switchable_interp_map[left_mi->mbmi.interp_filter] :
VP9_SWITCHABLE_FILTERS;
// above
const int above_mv_pred = is_inter_mode(above_mi->mbmi.mode);
const int above_interp = above_in_image && above_mv_pred ?
vp9_switchable_interp_map[above_mi->mbmi.interp_filter] :
VP9_SWITCHABLE_FILTERS;
assert(left_interp != -1);
assert(above_interp != -1);
if (left_interp == above_interp)
pred_context = left_interp;
else if (left_interp == VP9_SWITCHABLE_FILTERS &&
above_interp != VP9_SWITCHABLE_FILTERS)
pred_context = above_interp;
else if (left_interp != VP9_SWITCHABLE_FILTERS &&
above_interp == VP9_SWITCHABLE_FILTERS)
pred_context = left_interp;
else
pred_context = VP9_SWITCHABLE_FILTERS;
break;
if (above_in_image && left_in_image) { // both edges available
if (left_mi->mbmi.ref_frame[0] == INTRA_FRAME &&
above_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/intra (3)
pred_context = 3;
} else { // intra/inter (1) or inter/inter (0)
pred_context = left_mi->mbmi.ref_frame[0] == INTRA_FRAME ||
above_mi->mbmi.ref_frame[0] == INTRA_FRAME;
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
case PRED_INTRA_INTER: {
if (above_in_image && left_in_image) { // both edges available
if (left_mi->mbmi.ref_frame[0] == INTRA_FRAME &&
above_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/intra (3)
pred_context = 3;
} else { // intra/inter (1) or inter/inter (0)
pred_context = left_mi->mbmi.ref_frame[0] == INTRA_FRAME ||
above_mi->mbmi.ref_frame[0] == INTRA_FRAME;
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
// inter: 0, intra: 2
pred_context = 2 * (edge->mbmi.ref_frame[0] == INTRA_FRAME);
} else {
pred_context = 0;
}
assert(pred_context >= 0 && pred_context < INTRA_INTER_CONTEXTS);
return pred_context;
}
// Returns a context number for the given MB prediction signal
unsigned char vp9_get_pred_context_comp_inter_inter(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO *const mi = xd->mode_info_context;
const MODE_INFO *const above_mi = mi - cm->mode_info_stride;
const MODE_INFO *const left_mi = mi - 1;
const int left_in_image = xd->left_available && left_mi->mbmi.mb_in_image;
const int above_in_image = xd->up_available && above_mi->mbmi.mb_in_image;
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME &&
left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// neither edge uses comp pred (0/1)
pred_context = ((above_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref) ^
(left_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref));
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// one of two edges uses comp pred (2/3)
pred_context = 2 +
(above_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref ||
above_mi->mbmi.ref_frame[0] == INTRA_FRAME);
} else if (left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// one of two edges uses comp pred (2/3)
pred_context = 2 +
(left_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref ||
left_mi->mbmi.ref_frame[0] == INTRA_FRAME);
} else { // both edges use comp pred (4)
pred_context = 4;
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
// edge does not use comp pred (0/1)
pred_context = edge->mbmi.ref_frame[0] == cm->comp_fixed_ref;
} else { // edge uses comp pred (3)
pred_context = 3;
}
} else { // no edges available (1)
pred_context = 1;
}
assert(pred_context >= 0 && pred_context < COMP_INTER_CONTEXTS);
return pred_context;
}
// inter: 0, intra: 2
pred_context = 2 * (edge->mbmi.ref_frame[0] == INTRA_FRAME);
} else {
pred_context = 0;
// Returns a context number for the given MB prediction signal
unsigned char vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO *const mi = xd->mode_info_context;
const MODE_INFO *const above_mi = mi - cm->mode_info_stride;
const MODE_INFO *const left_mi = mi - 1;
const int left_in_image = xd->left_available && left_mi->mbmi.mb_in_image;
const int above_in_image = xd->up_available && above_mi->mbmi.mb_in_image;
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
const int var_ref_idx = !fix_ref_idx;
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
&& left_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/intra (2)
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
|| left_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/inter
const MODE_INFO *edge =
above_mi->mbmi.ref_frame[0] == INTRA_FRAME ? left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) { // single pred (1/3)
pred_context = 1 + 2 * edge->mbmi.ref_frame[0] != cm->comp_var_ref[1];
} else { // comp pred (1/3)
pred_context = 1 + 2 * edge->mbmi.ref_frame[var_ref_idx]
!= cm->comp_var_ref[1];
}
assert(pred_context >= 0 && pred_context < INTRA_INTER_CONTEXTS);
break;
}
} else { // inter/inter
int l_sg = left_mi->mbmi.ref_frame[1] <= INTRA_FRAME;
int a_sg = above_mi->mbmi.ref_frame[1] <= INTRA_FRAME;
MV_REFERENCE_FRAME vrfa =
a_sg ?
above_mi->mbmi.ref_frame[0] :
above_mi->mbmi.ref_frame[var_ref_idx];
MV_REFERENCE_FRAME vrfl =
l_sg ?
left_mi->mbmi.ref_frame[0] : left_mi->mbmi.ref_frame[var_ref_idx];
case PRED_COMP_INTER_INTER: {
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME &&
left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// neither edge uses comp pred (0/1)
pred_context = ((above_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref) ^
(left_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref));
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// one of two edges uses comp pred (2/3)
pred_context = 2 +
(above_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref ||
above_mi->mbmi.ref_frame[0] == INTRA_FRAME);
} else if (left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
// one of two edges uses comp pred (2/3)
pred_context = 2 +
(left_mi->mbmi.ref_frame[0] == cm->comp_fixed_ref ||
left_mi->mbmi.ref_frame[0] == INTRA_FRAME);
} else { // both edges use comp pred (4)
if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) {
pred_context = 0;
} else if (l_sg && a_sg) { // single/single
if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0])
|| (vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0])) {
pred_context = 4;
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
// edge does not use comp pred (0/1)
pred_context = edge->mbmi.ref_frame[0] == cm->comp_fixed_ref;
} else { // edge uses comp pred (3)
} else if (vrfa == vrfl) {
pred_context = 3;
} else {
pred_context = 1;
}
} else { // no edges available (1)
pred_context = 1;
}
assert(pred_context >= 0 && pred_context < COMP_INTER_CONTEXTS);
break;
}
case PRED_COMP_REF_P: {
const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
const int var_ref_idx = !fix_ref_idx;
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME &&
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/intra (2)
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME ||
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) { // intra/inter
const MODE_INFO *edge = above_mi->mbmi.ref_frame[0] == INTRA_FRAME ?
left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) { // single pred (1/3)
pred_context = 1 +
2 * edge->mbmi.ref_frame[0] != cm->comp_var_ref[1];
} else { // comp pred (1/3)
pred_context = 1 +
2 * edge->mbmi.ref_frame[var_ref_idx] != cm->comp_var_ref[1];
}
} else { // inter/inter
int l_sg = left_mi->mbmi.ref_frame[1] <= INTRA_FRAME;
int a_sg = above_mi->mbmi.ref_frame[1] <= INTRA_FRAME;
MV_REFERENCE_FRAME vrfa = a_sg ? above_mi->mbmi.ref_frame[0] :
above_mi->mbmi.ref_frame[var_ref_idx];
MV_REFERENCE_FRAME vrfl = l_sg ? left_mi->mbmi.ref_frame[0] :
left_mi->mbmi.ref_frame[var_ref_idx];
if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) {
pred_context = 0;
} else if (l_sg && a_sg) { // single/single
if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0]) ||
(vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0])) {
pred_context = 4;
} else if (vrfa == vrfl) {
pred_context = 3;
} else {
pred_context = 1;
}
} else if (l_sg || a_sg) { // single/comp
MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1]) {
pred_context = 1;
} else if (rfs == cm->comp_var_ref[1] &&
vrfc != cm->comp_var_ref[1]) {
pred_context = 2;
} else {
pred_context = 4;
}
} else if (vrfa == vrfl) { // comp/comp
pred_context = 4;
} else {
pred_context = 2;
}
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
} else if (l_sg || a_sg) { // single/comp
MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
if (edge->mbmi.ref_frame[0] == INTRA_FRAME) {
if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1]) {
pred_context = 1;
} else if (rfs == cm->comp_var_ref[1] && vrfc != cm->comp_var_ref[1]) {
pred_context = 2;
} else if (edge->mbmi.ref_frame[1] > INTRA_FRAME) {
pred_context =
4 * edge->mbmi.ref_frame[var_ref_idx] != cm->comp_var_ref[1];
} else {
pred_context = 3 * edge->mbmi.ref_frame[0] != cm->comp_var_ref[1];
pred_context = 4;
}
} else { // no edges available (2)
} else if (vrfa == vrfl) { // comp/comp
pred_context = 4;
} else {
pred_context = 2;
}
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
break;
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
if (edge->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (edge->mbmi.ref_frame[1] > INTRA_FRAME) {
pred_context = 4 * edge->mbmi.ref_frame[var_ref_idx]
!= cm->comp_var_ref[1];
} else {
pred_context = 3 * edge->mbmi.ref_frame[0] != cm->comp_var_ref[1];
}
} else { // no edges available (2)
pred_context = 2;
}
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
case PRED_SINGLE_REF_P1: {
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME &&
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME ||
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
const MODE_INFO *edge = above_mi->mbmi.ref_frame[0] == INTRA_FRAME ?
left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 4 * (edge->mbmi.ref_frame[0] == LAST_FRAME);
} else {
pred_context = 1 + (edge->mbmi.ref_frame[0] == LAST_FRAME ||
edge->mbmi.ref_frame[1] == LAST_FRAME);
}
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME &&
left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 2 * (above_mi->mbmi.ref_frame[0] == LAST_FRAME) +
2 * (left_mi->mbmi.ref_frame[0] == LAST_FRAME);
} else if (above_mi->mbmi.ref_frame[1] > INTRA_FRAME &&
left_mi->mbmi.ref_frame[1] > INTRA_FRAME) {
pred_context = 1 + (above_mi->mbmi.ref_frame[0] == LAST_FRAME ||
above_mi->mbmi.ref_frame[1] == LAST_FRAME ||
left_mi->mbmi.ref_frame[0] == LAST_FRAME ||
left_mi->mbmi.ref_frame[1] == LAST_FRAME);
} else {
MV_REFERENCE_FRAME rfs = above_mi->mbmi.ref_frame[1] <= INTRA_FRAME ?
return pred_context;
}
unsigned char vp9_get_pred_context_single_ref_p1(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO *const mi = xd->mode_info_context;
const MODE_INFO *const above_mi = mi - cm->mode_info_stride;
const MODE_INFO *const left_mi = mi - 1;
const int left_in_image = xd->left_available && left_mi->mbmi.mb_in_image;
const int above_in_image = xd->up_available && above_mi->mbmi.mb_in_image;
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
&& left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
|| left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
const MODE_INFO *edge =
above_mi->mbmi.ref_frame[0] == INTRA_FRAME ? left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 4 * (edge->mbmi.ref_frame[0] == LAST_FRAME);
} else {
pred_context = 1
+ (edge->mbmi.ref_frame[0] == LAST_FRAME
|| edge->mbmi.ref_frame[1] == LAST_FRAME);
}
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME
&& left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 2 * (above_mi->mbmi.ref_frame[0] == LAST_FRAME)
+ 2 * (left_mi->mbmi.ref_frame[0] == LAST_FRAME);
} else if (above_mi->mbmi.ref_frame[1] > INTRA_FRAME
&& left_mi->mbmi.ref_frame[1] > INTRA_FRAME) {
pred_context = 1
+ (above_mi->mbmi.ref_frame[0] == LAST_FRAME
|| above_mi->mbmi.ref_frame[1] == LAST_FRAME
|| left_mi->mbmi.ref_frame[0] == LAST_FRAME
|| left_mi->mbmi.ref_frame[1] == LAST_FRAME);
} else {
MV_REFERENCE_FRAME rfs =
above_mi->mbmi.ref_frame[1] <= INTRA_FRAME ?
above_mi->mbmi.ref_frame[0] : left_mi->mbmi.ref_frame[0];
MV_REFERENCE_FRAME crf1 = above_mi->mbmi.ref_frame[1] > INTRA_FRAME ?
MV_REFERENCE_FRAME crf1 =
above_mi->mbmi.ref_frame[1] > INTRA_FRAME ?
above_mi->mbmi.ref_frame[0] : left_mi->mbmi.ref_frame[0];
MV_REFERENCE_FRAME crf2 = above_mi->mbmi.ref_frame[1] > INTRA_FRAME ?
MV_REFERENCE_FRAME crf2 =
above_mi->mbmi.ref_frame[1] > INTRA_FRAME ?
above_mi->mbmi.ref_frame[1] : left_mi->mbmi.ref_frame[1];
if (rfs == LAST_FRAME) {
pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
} else {
pred_context = crf1 == LAST_FRAME || crf2 == LAST_FRAME;
}
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
if (rfs == LAST_FRAME) {
pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
} else {
pred_context = crf1 == LAST_FRAME || crf2 == LAST_FRAME;
}
}
} else if (above_in_image || left_in_image) { // one edge available
const MODE_INFO *edge = above_in_image ? above_mi : left_mi;
if (edge->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 4 * (edge->mbmi.ref_frame[0] == LAST_FRAME);
} else {
pred_context = 1
+ (edge->mbmi.ref_frame[0] == LAST_FRAME
|| edge->mbmi.ref_frame[1] == LAST_FRAME);
}
} else { // no edges available (2)
pred_context = 2;
}
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
return pred_context;
}
if (edge->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
pred_context = 4 * (edge->mbmi.ref_frame[0] == LAST_FRAME);
unsigned char vp9_get_pred_context_single_ref_p2(const VP9_COMMON *cm,
const MACROBLOCKD *xd) {
int pred_context;
const MODE_INFO *const mi = xd->mode_info_context;
const MODE_INFO *const above_mi = mi - cm->mode_info_stride;
const MODE_INFO *const left_mi = mi - 1;
const int left_in_image = xd->left_available && left_mi->mbmi.mb_in_image;
const int above_in_image = xd->up_available && above_mi->mbmi.mb_in_image;
// Note:
// The mode info data structure has a one element border above and to the
// left of the entries correpsonding to real macroblocks.
// The prediction flags in these dummy entries are initialised to 0.
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
&& left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME
|| left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
const MODE_INFO *edge =
above_mi->mbmi.ref_frame[0] == INTRA_FRAME ? left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
if (edge->mbmi.ref_frame[0] == LAST_FRAME) {
pred_context = 3;
} else {
pred_context = 1 + (edge->mbmi.ref_frame[0] == LAST_FRAME ||
edge->mbmi.ref_frame[1] == LAST_FRAME);
pred_context = 4 * (edge->mbmi.ref_frame[0] == GOLDEN_FRAME);
}
} else { // no edges available (2)
} else {
pred_context = 1
+ 2
* (edge->mbmi.ref_frame[0] == GOLDEN_FRAME
|| edge->mbmi.ref_frame[1] == GOLDEN_FRAME);
}
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME
&& left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
if (above_mi->mbmi.ref_frame[0] == LAST_FRAME
&& left_mi->mbmi.ref_frame[0] == LAST_FRAME) {
pred_context = 3;
} else if (above_mi->mbmi.ref_frame[0] == LAST_FRAME
|| left_mi->mbmi.ref_frame[0] == LAST_FRAME) {
const MODE_INFO *edge =
above_mi->mbmi.ref_frame[0] == LAST_FRAME ? left_mi : above_mi;
pred_context = 4 * (edge->mbmi.ref_frame[0] == GOLDEN_FRAME);
} else {
pred_context = 2 * (above_mi->mbmi.ref_frame[0] == GOLDEN_FRAME)
+ 2 * (left_mi->mbmi.ref_frame[0] == GOLDEN_FRAME);
}
} else if (above_mi->mbmi.ref_frame[1] > INTRA_FRAME
&& left_mi->mbmi.ref_frame[1] > INTRA_FRAME) {
if (above_mi->mbmi.ref_frame[0] == left_mi->mbmi.ref_frame[0]
&& above_mi->mbmi.ref_frame[1] == left_mi->mbmi.ref_frame[1]) {
pred_context = 3
* (above_mi->mbmi.ref_frame[0] == GOLDEN_FRAME
|| above_mi->mbmi.ref_frame[1] == GOLDEN_FRAME
|| left_mi->mbmi.ref_frame[0] == GOLDEN_FRAME
|| left_mi->mbmi.ref_frame[1] == GOLDEN_FRAME);
} else {
pred_context = 2;
}
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
break;
}
case PRED_SINGLE_REF_P2: {
if (above_in_image && left_in_image) { // both edges available
if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME &&
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
pred_context = 2;
} else if (above_mi->mbmi.ref_frame[0] == INTRA_FRAME ||
left_mi->mbmi.ref_frame[0] == INTRA_FRAME) {
const MODE_INFO *edge = above_mi->mbmi.ref_frame[0] == INTRA_FRAME ?
left_mi : above_mi;
if (edge->mbmi.ref_frame[1] <= INTRA_FRAME) {
if (edge->mbmi.ref_frame[0] == LAST_FRAME) {
pred_context = 3;
} else {
pred_context = 4 * (edge->mbmi.ref_frame[0] == GOLDEN_FRAME);
}
} else {
pred_context = 1 + 2 * (edge->mbmi.ref_frame[0] == GOLDEN_FRAME ||
edge->mbmi.ref_frame[1] == GOLDEN_FRAME);
}
} else if (above_mi->mbmi.ref_frame[1] <= INTRA_FRAME &&
left_mi->mbmi.ref_frame[1] <= INTRA_FRAME) {
if (above_mi->mbmi.ref_frame[0] == LAST_FRAME &&
left_mi->mbmi.ref_frame[0] == LAST_FRAME) {
pred_context = 3;
} else if (above_mi->mbmi.ref_frame[0] == LAST_FRAME ||
left_mi->mbmi.ref_frame[0] == LAST_FRAME) {