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Commit 2b38deff authored by Angie Chiang's avatar Angie Chiang
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Use 7 neighbors for nz_map ctx 

This will let coding performance drop slightly
lowres 0.093%

Increase encoder speed by 24%

Reduce nz_map's context size by 20%

Change-Id: I871c18a7e0341e066afc334556b9998194b3f8c9
parent cad9fb52
Hide whitespace changes
Inline Side-by-side
Showing with 159 additions and 137 deletions
av1/common/entropy.h
View file @ 2b38deff
......@@ -61,13 +61,13 @@ extern "C" {
#if CONFIG_LV_MAP
#define TXB_SKIP_CONTEXTS 13
#if CONFIG_EXT_TX
#define SIG_COEF_CONTEXTS_2D 20
#define SIG_COEF_CONTEXTS_1D 20
#define SIG_COEF_CONTEXTS_2D 16
#define SIG_COEF_CONTEXTS_1D 16
#define SIG_COEF_CONTEXTS \
(SIG_COEF_CONTEXTS_2D + SIG_COEF_CONTEXTS_1D + SIG_COEF_CONTEXTS_1D)
#else
#define SIG_COEF_CONTEXTS_2D 20
#define SIG_COEF_CONTEXTS 20
#define SIG_COEF_CONTEXTS_2D 16
#define SIG_COEF_CONTEXTS 16
#endif
#define EOB_COEF_CONTEXTS 25
#define COEFF_BASE_CONTEXTS 42
......
av1/common/entropymode.c
View file @ 2b38deff
......@@ -175,133 +175,178 @@ const aom_prob default_nz_map[TX_SIZES][PLANE_TYPES][SIG_COEF_CONTEXTS] = {
#if CONFIG_EXT_TX
#if CONFIG_CHROMA_2X2
{
{ 34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37,
{
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37,
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37 },
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
},
{ 52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50,
{
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50,
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50 },
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
},
},
#endif
{
{ 34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37,
{
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37,
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37 },
34, 103, 61, 106, 62, 160, 112, 54,
173, 121, 157, 92, 157, 129, 94, 65,
},
{ 52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50,
{
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50,
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50 },
52, 124, 84, 136, 107, 197, 161, 82,
183, 151, 153, 140, 152, 134, 109, 81,
},
},
{
{ 34, 127, 74, 124, 74, 204, 153, 76, 226, 162,
92, 207, 126, 91, 227, 192, 149, 108, 85, 55,
{
34, 127, 74, 124, 74, 204, 153, 76,
226, 162, 207, 126, 227, 192, 149, 108,
34, 127, 74, 124, 74, 204, 153, 76, 226, 162,
92, 207, 126, 91, 227, 192, 149, 108, 85, 55,
34, 127, 74, 124, 74, 204, 153, 76,
226, 162, 207, 126, 227, 192, 149, 108,
34, 127, 74, 124, 74, 204, 153, 76, 226, 162,
92, 207, 126, 91, 227, 192, 149, 108, 85, 55 },
34, 127, 74, 124, 74, 204, 153, 76,
226, 162, 207, 126, 227, 192, 149, 108,
},
{ 43, 136, 115, 158, 130, 212, 187, 112, 231, 180,
130, 202, 164, 130, 236, 204, 168, 139, 112, 114,
{
43, 136, 115, 158, 130, 212, 187, 112,
231, 180, 202, 164, 236, 204, 168, 139,
43, 136, 115, 158, 130, 212, 187, 112, 231, 180,
130, 202, 164, 130, 236, 204, 168, 139, 112, 114,
43, 136, 115, 158, 130, 212, 187, 112,
231, 180, 202, 164, 236, 204, 168, 139,
43, 136, 115, 158, 130, 212, 187, 112, 231, 180,
130, 202, 164, 130, 236, 204, 168, 139, 112, 114 },
43, 136, 115, 158, 130, 212, 187, 112,
231, 180, 202, 164, 236, 204, 168, 139,
},
},
{
{ 25, 117, 70, 120, 77, 215, 171, 102, 234, 156,
105, 235, 155, 109, 247, 220, 176, 127, 92, 72,
{
25, 117, 70, 120, 77, 215, 171, 102,
234, 156, 235, 155, 247, 220, 176, 127,
25, 117, 70, 120, 77, 215, 171, 102, 234, 156,
105, 235, 155, 109, 247, 220, 176, 127, 92, 72,
25, 117, 70, 120, 77, 215, 171, 102,
234, 156, 235, 155, 247, 220, 176, 127,
25, 117, 70, 120, 77, 215, 171, 102, 234, 156,
105, 235, 155, 109, 247, 220, 176, 127, 92, 72 },
25, 117, 70, 120, 77, 215, 171, 102,
234, 156, 235, 155, 247, 220, 176, 127,
},
{ 24, 88, 49, 100, 62, 202, 148, 62, 237, 178,
102, 233, 168, 105, 244, 198, 162, 127, 103, 71,
{
24, 88, 49, 100, 62, 202, 148, 62,
237, 178, 233, 168, 244, 198, 162, 127,
24, 88, 49, 100, 62, 202, 148, 62, 237, 178,
102, 233, 168, 105, 244, 198, 162, 127, 103, 71,
24, 88, 49, 100, 62, 202, 148, 62,
237, 178, 233, 168, 244, 198, 162, 127,
24, 88, 49, 100, 62, 202, 148, 62, 237, 178,
102, 233, 168, 105, 244, 198, 162, 127, 103, 71 },
24, 88, 49, 100, 62, 202, 148, 62,
237, 178, 233, 168, 244, 198, 162, 127,
},
},
{
{ 11, 54, 17, 69, 26, 128, 125, 56, 232, 130,
60, 237, 121, 66, 250, 168, 134, 114, 93, 53,
{
11, 54, 17, 69, 26, 128, 125, 56,
232, 130, 237, 121, 250, 168, 134, 114,
11, 54, 17, 69, 26, 128, 125, 56, 232, 130,
60, 237, 121, 66, 250, 168, 134, 114, 93, 53,
11, 54, 17, 69, 26, 128, 125, 56,
232, 130, 237, 121, 250, 168, 134, 114,
11, 54, 17, 69, 26, 128, 125, 56, 232, 130,
60, 237, 121, 66, 250, 168, 134, 114, 93, 53 },
11, 54, 17, 69, 26, 128, 125, 56,
232, 130, 237, 121, 250, 168, 134, 114,
},
{ 21, 52, 32, 95, 64, 171, 152, 70, 247, 159,
81, 252, 177, 100, 252, 221, 192, 143, 195, 146,
{
21, 52, 32, 95, 64, 171, 152, 70,
247, 159, 252, 177, 252, 221, 192, 143,
21, 52, 32, 95, 64, 171, 152, 70, 247, 159,
81, 252, 177, 100, 252, 221, 192, 143, 195, 146,
21, 52, 32, 95, 64, 171, 152, 70,
247, 159, 252, 177, 252, 221, 192, 143,
21, 52, 32, 95, 64, 171, 152, 70, 247, 159,
81, 252, 177, 100, 252, 221, 192, 143, 195, 146 },
21, 52, 32, 95, 64, 171, 152, 70,
247, 159, 252, 177, 252, 221, 192, 143,
},
},
#else // CONFIG_EXT_TX
#if CONFIG_CHROMA_2X2
{
{ 34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37 },
{ 52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50 },
{
34, 103, 61, 106, 62, 160, 112, 54, 173, 121, 157, 92, 157, 129, 94,
65,
},
{
52, 124, 84, 136, 107, 197, 161, 82, 183, 151, 153, 140, 152, 134,
109, 81,
},
},
#endif
{
{ 34, 103, 61, 106, 62, 160, 112, 54, 173, 121,
75, 157, 92, 75, 157, 129, 94, 65, 52, 37 },
{ 52, 124, 84, 136, 107, 197, 161, 82, 183, 151,
109, 153, 140, 103, 152, 134, 109, 81, 69, 50 },
{
34, 103, 61, 106, 62, 160, 112, 54, 173, 121, 157, 92, 157, 129, 94,
65,
},
{
52, 124, 84, 136, 107, 197, 161, 82, 183, 151, 153, 140, 152, 134,
109, 81,
},
},
{
{ 34, 127, 74, 124, 74, 204, 153, 76, 226, 162,
92, 207, 126, 91, 227, 192, 149, 108, 85, 55 },
{ 43, 136, 115, 158, 130, 212, 187, 112, 231, 180,
130, 202, 164, 130, 236, 204, 168, 139, 112, 114 },
{
34, 127, 74, 124, 74, 204, 153, 76, 226, 162, 207, 126, 227, 192, 149,
108,
},
{
43, 136, 115, 158, 130, 212, 187, 112, 231, 180, 202, 164, 236, 204,
168, 139,
},
},
{
{ 25, 117, 70, 120, 77, 215, 171, 102, 234, 156,
105, 235, 155, 109, 247, 220, 176, 127, 92, 72 },
{ 24, 88, 49, 100, 62, 202, 148, 62, 237, 178,
102, 233, 168, 105, 244, 198, 162, 127, 103, 71 },
{
25, 117, 70, 120, 77, 215, 171, 102, 234, 156, 235, 155, 247, 220,
176, 127,
},
{
24, 88, 49, 100, 62, 202, 148, 62, 237, 178, 233, 168, 244, 198, 162,
127,
},
},
{
{ 11, 54, 17, 69, 26, 128, 125, 56, 232, 130,
60, 237, 121, 66, 250, 168, 134, 114, 93, 53 },
{ 21, 52, 32, 95, 64, 171, 152, 70, 247, 159,
81, 252, 177, 100, 252, 221, 192, 143, 195, 146 },
{
11, 54, 17, 69, 26, 128, 125, 56, 232, 130, 237, 121, 250, 168, 134,
114,
},
{
21, 52, 32, 95, 64, 171, 152, 70, 247, 159, 252, 177, 252, 221, 192,
143,
},
},
#endif // CONFIG_EXT_TX
};
......
av1/common/txb_common.h
View file @ 2b38deff
......@@ -249,16 +249,15 @@ static INLINE int get_br_ctx(const tran_low_t *tcoeffs,
return ctx;
}
#define SIG_REF_OFFSET_NUM 11
#define SIG_REF_OFFSET_NUM 7
static int sig_ref_offset[SIG_REF_OFFSET_NUM][2] = {
{ -2, -1 }, { -2, 0 }, { -2, 1 }, { -1, -2 }, { -1, -1 }, { -1, 0 },
{ -1, 1 }, { 0, -2 }, { 0, -1 }, { 1, -2 }, { 1, -1 },
{ -2, -1 }, { -2, 0 }, { -1, -2 }, { -1, -1 },
{ -1, 0 }, { 0, -2 }, { 0, -1 },
};
static INLINE int get_nz_count(const tran_low_t *tcoeffs, int bwl, int height,
int row, int col, const int16_t *iscan) {
int row, int col) {
int count = 0;
const int pos = (row << bwl) + col;
for (int idx = 0; idx < SIG_REF_OFFSET_NUM; ++idx) {
const int ref_row = row + sig_ref_offset[idx][0];
const int ref_col = col + sig_ref_offset[idx][1];
......@@ -266,7 +265,7 @@ static INLINE int get_nz_count(const tran_low_t *tcoeffs, int bwl, int height,
ref_col >= (1 << bwl))
continue;
const int nb_pos = (ref_row << bwl) + ref_col;
if (iscan[nb_pos] < iscan[pos]) count += (tcoeffs[nb_pos] != 0);
count += (tcoeffs[nb_pos] != 0);
}
return count;
}
......@@ -288,10 +287,8 @@ static INLINE TX_CLASS get_tx_class(TX_TYPE tx_type) {
// TODO(angiebird): optimize this function by generate a table that maps from
// count to ctx
static INLINE int get_nz_map_ctx_from_count(int count,
const tran_low_t *tcoeffs,
int coeff_idx, // raster order
int bwl, const int16_t *iscan,
TX_TYPE tx_type) {
int bwl, TX_TYPE tx_type) {
(void)tx_type;
const int row = coeff_idx >> bwl;
const int col = coeff_idx - (row << bwl);
......@@ -311,19 +308,12 @@ static INLINE int get_nz_map_ctx_from_count(int count,
if (row == 0 && col == 0) return offset + 0;
if (row == 0 && col == 1) return offset + 1 + (tcoeffs[0] != 0);
if (row == 0 && col == 1) return offset + 1 + count;
if (row == 1 && col == 0) return offset + 3 + (tcoeffs[0] != 0);
if (row == 1 && col == 0) return offset + 3 + count;
if (row == 1 && col == 1) {
int pos;
ctx = (tcoeffs[0] != 0);
if (iscan[1] < iscan[coeff_idx]) ctx += (tcoeffs[1] != 0);
pos = 1 << bwl;
if (iscan[pos] < iscan[coeff_idx]) ctx += (tcoeffs[pos] != 0);
ctx = (ctx + 1) >> 1;
ctx = (count + 1) >> 1;
assert(5 + ctx <= 7);
......@@ -333,33 +323,32 @@ static INLINE int get_nz_map_ctx_from_count(int count,
if (row == 0) {
ctx = (count + 1) >> 1;
assert(ctx < 3);
assert(ctx < 2);
return offset + 8 + ctx;
}
if (col == 0) {
ctx = (count + 1) >> 1;
assert(ctx < 3);
return offset + 11 + ctx;
assert(ctx < 2);
return offset + 10 + ctx;
}
ctx = count >> 1;
assert(14 + ctx < 20);
assert(12 + ctx < 16);
return offset + 14 + ctx;
return offset + 12 + ctx;
}
static INLINE int get_nz_map_ctx(const tran_low_t *tcoeffs,
const int coeff_idx, // raster order
const int bwl, const int height,
const int16_t *iscan, TX_TYPE tx_type) {
TX_TYPE tx_type) {
const int row = coeff_idx >> bwl;
const int col = coeff_idx - (row << bwl);
int count = get_nz_count(tcoeffs, bwl, height, row, col, iscan);
return get_nz_map_ctx_from_count(count, tcoeffs, coeff_idx, bwl, iscan,
tx_type);
int count = get_nz_count(tcoeffs, bwl, height, row, col);
return get_nz_map_ctx_from_count(count, coeff_idx, bwl, tx_type);
}
static INLINE int get_eob_ctx(const tran_low_t *tcoeffs,
......
av1/decoder/decodetxb.c
View file @ 2b38deff
......@@ -96,12 +96,10 @@ uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
const int16_t *scan = scan_order->scan;
const int16_t *iscan = scan_order->iscan;
for (c = 0; c < seg_eob; ++c) {
int is_nz;
int coeff_ctx =
get_nz_map_ctx(tcoeffs, scan[c], bwl, height, iscan, tx_type);
int coeff_ctx = get_nz_map_ctx(tcoeffs, scan[c], bwl, height, tx_type);
int eob_ctx = get_eob_ctx(tcoeffs, scan[c], txs_ctx);
if (c < seg_eob - 1) {
......
av1/encoder/encodetxb.c
View file @ 2b38deff
......@@ -107,7 +107,6 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
const int16_t *scan = scan_order->scan;
const int16_t *iscan = scan_order->iscan;
int c;
int is_nz;
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
......@@ -137,8 +136,7 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
#endif
for (c = 0; c < eob; ++c) {
int coeff_ctx =
get_nz_map_ctx(tcoeff, scan[c], bwl, height, iscan, tx_type);
int coeff_ctx = get_nz_map_ctx(tcoeff, scan[c], bwl, height, tx_type);
int eob_ctx = get_eob_ctx(tcoeff, scan[c], txs_ctx);
tran_low_t v = tcoeff[scan[c]];
......@@ -376,7 +374,6 @@ int av1_cost_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCK *x, int plane,
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
const int16_t *scan = scan_order->scan;
const int16_t *iscan = scan_order->iscan;
LV_MAP_COEFF_COST *coeff_costs = &x->coeff_costs[txs_ctx][plane_type];
......@@ -398,8 +395,7 @@ int av1_cost_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCK *x, int plane,
int level = abs(v);
if (c < seg_eob) {
int coeff_ctx =
get_nz_map_ctx(qcoeff, scan[c], bwl, height, iscan, tx_type);
int coeff_ctx = get_nz_map_ctx(qcoeff, scan[c], bwl, height, tx_type);
cost += coeff_costs->nz_map_cost[coeff_ctx][is_nz];
}
......@@ -511,7 +507,6 @@ static INLINE int get_golomb_cost(int abs_qc) {
void gen_txb_cache(TxbCache *txb_cache, TxbInfo *txb_info) {
// gen_nz_count_arr
const int16_t *scan = txb_info->scan_order->scan;
const int16_t *iscan = txb_info->scan_order->iscan;
const int bwl = txb_info->bwl;
const int height = txb_info->height;
tran_low_t *qcoeff = txb_info->qcoeff;
......@@ -522,10 +517,10 @@ void gen_txb_cache(TxbCache *txb_cache, TxbInfo *txb_info) {
const int row = coeff_idx >> bwl;
const int col = coeff_idx - (row << bwl);
txb_cache->nz_count_arr[coeff_idx] =
get_nz_count(qcoeff, bwl, height, row, col, iscan);
get_nz_count(qcoeff, bwl, height, row, col);
const int nz_count = txb_cache->nz_count_arr[coeff_idx];
txb_cache->nz_ctx_arr[coeff_idx] = get_nz_map_ctx_from_count(
nz_count, qcoeff, coeff_idx, bwl, iscan, txb_info->tx_type);
txb_cache->nz_ctx_arr[coeff_idx] =
get_nz_map_ctx_from_count(nz_count, coeff_idx, bwl, txb_info->tx_type);
// gen_base_count_mag_arr
if (!has_base(qcoeff[coeff_idx], 0)) continue;
......@@ -731,9 +726,8 @@ static int try_neighbor_level_down_nz(int coeff_idx, int nb_coeff_idx,
const int count = txb_cache->nz_count_arr[coeff_idx];
assert(count > 0);
txb_info->qcoeff[nb_coeff_idx] = get_lower_coeff(nb_coeff);
const int new_ctx =
get_nz_map_ctx_from_count(count - 1, txb_info->qcoeff, coeff_idx,
txb_info->bwl, iscan, txb_info->tx_type);
const int new_ctx = get_nz_map_ctx_from_count(
count - 1, coeff_idx, txb_info->bwl, txb_info->tx_type);
txb_info->qcoeff[nb_coeff_idx] = nb_coeff;
const int ctx = txb_cache->nz_ctx_arr[coeff_idx];
const int is_nz = abs_qc > 0;
......@@ -1038,11 +1032,10 @@ void update_level_down(int coeff_idx, TxbCache *txb_cache, TxbInfo *txb_info) {
assert(txb_cache->nz_count_arr[nb_coeff_idx] >= 0);
}
const int count = txb_cache->nz_count_arr[nb_coeff_idx];
txb_cache->nz_ctx_arr[nb_coeff_idx] =
get_nz_map_ctx_from_count(count, txb_info->qcoeff, nb_coeff_idx,
txb_info->bwl, iscan, txb_info->tx_type);
txb_cache->nz_ctx_arr[nb_coeff_idx] = get_nz_map_ctx_from_count(
count, nb_coeff_idx, txb_info->bwl, txb_info->tx_type);
// int ref_ctx = get_nz_map_ctx(txb_info->qcoeff, nb_coeff_idx,
// txb_info->bwl, iscan, tx_type);
// txb_info->bwl, tx_type);
// if (ref_ctx != txb_cache->nz_ctx_arr[nb_coeff_idx])
// printf("nz ctx %d ref_ctx %d\n",
// txb_cache->nz_ctx_arr[nb_coeff_idx], ref_ctx);
......@@ -1130,12 +1123,11 @@ static int get_coeff_cost(tran_low_t qc, int scan_idx, TxbInfo *txb_info,
const tran_low_t abs_qc = abs(qc);
int cost = 0;
const int16_t *scan = txb_info->scan_order->scan;
const int16_t *iscan = txb_info->scan_order->iscan;
if (scan_idx < txb_info->seg_eob) {
int coeff_ctx =
get_nz_map_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->bwl,
txb_info->height, iscan, txb_info->tx_type);
txb_info->height, txb_info->tx_type);
cost += txb_costs->nz_map_cost[coeff_ctx][is_nz];
}
......@@ -1571,7 +1563,6 @@ void av1_update_and_record_txb_context(int plane, int block, int blk_row,
av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
const int16_t *scan = scan_order->scan;
const int16_t *iscan = scan_order->iscan;
const int seg_eob = av1_get_tx_eob(&cpi->common.seg, segment_id, tx_size);
int c, i;
TXB_CTX txb_ctx;
......@@ -1611,8 +1602,7 @@ void av1_update_and_record_txb_context(int plane, int block, int blk_row,
for (c = 0; c < eob; ++c) {
tran_low_t v = qcoeff[scan[c]];
int is_nz = (v != 0);
int coeff_ctx =
get_nz_map_ctx(tcoeff, scan[c], bwl, height, iscan, tx_type);
int coeff_ctx = get_nz_map_ctx(tcoeff, scan[c], bwl, height, tx_type);
int eob_ctx = get_eob_ctx(tcoeff, scan[c], txsize_ctx);
if (c == seg_eob - 1) break;
......
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