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Make level map coding system support rectangular tx_size 

This commit makes the level map coding system support the transform
coefficients from rectangular transform block sizes.

Change-Id: I5cd6c71d12e41938f942adc98cc1e1f286336f12
This commit is contained in:
Jingning Han 2017-06-13 15:57:59 -07:00
Родитель b0f60edf7a
Коммит 341d79e1d9
3 изменённых файлов: 55 добавлений и 44 удалений
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37
av1/common/txb_common.h
Просмотреть файл

@ -37,14 +37,14 @@ static int base_ref_offset[BASE_CONTEXT_POSITION_NUM][2] = {
};
static INLINE int get_level_count(const tran_low_t *tcoeffs, int stride,
int row, int col, int level,
int height, int row, int col, int level,
int (*nb_offset)[2], int nb_num) {
int count = 0;
for (int idx = 0; idx < nb_num; ++idx) {
const int ref_row = row + nb_offset[idx][0];
const int ref_col = col + nb_offset[idx][1];
const int pos = ref_row * stride + ref_col;
if (ref_row < 0 || ref_col < 0 || ref_row >= stride || ref_col >= stride)
if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
continue;
tran_low_t abs_coeff = abs(tcoeffs[pos]);
count += abs_coeff > level;
@ -53,14 +53,15 @@ static INLINE int get_level_count(const tran_low_t *tcoeffs, int stride,
}
static INLINE void get_mag(int *mag, const tran_low_t *tcoeffs, int stride,
int row, int col, int (*nb_offset)[2], int nb_num) {
int height, int row, int col, int (*nb_offset)[2],
int nb_num) {
mag[0] = 0;
mag[1] = 0;
for (int idx = 0; idx < nb_num; ++idx) {
const int ref_row = row + nb_offset[idx][0];
const int ref_col = col + nb_offset[idx][1];
const int pos = ref_row * stride + ref_col;
if (ref_row < 0 || ref_col < 0 || ref_row >= stride || ref_col >= stride)
if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
continue;
tran_low_t abs_coeff = abs(tcoeffs[pos]);
if (nb_offset[idx][0] >= 0 && nb_offset[idx][1] >= 0) {
@ -74,15 +75,16 @@ static INLINE void get_mag(int *mag, const tran_low_t *tcoeffs, int stride,
}
}
static INLINE int get_level_count_mag(int *mag, const tran_low_t *tcoeffs,
int stride, int row, int col, int level,
int (*nb_offset)[2], int nb_num) {
int stride, int height, int row, int col,
int level, int (*nb_offset)[2],
int nb_num) {
int count = 0;
*mag = 0;
for (int idx = 0; idx < nb_num; ++idx) {
const int ref_row = row + nb_offset[idx][0];
const int ref_col = col + nb_offset[idx][1];
const int pos = ref_row * stride + ref_col;
if (ref_row < 0 || ref_col < 0 || ref_row >= stride || ref_col >= stride)
if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
continue;
tran_low_t abs_coeff = abs(tcoeffs[pos]);
count += abs_coeff > level;
@ -115,15 +117,16 @@ static INLINE int get_base_ctx_from_count_mag(int row, int col, int count,
static INLINE int get_base_ctx(const tran_low_t *tcoeffs,
int c, // raster order
const int bwl, const int level) {
const int bwl, const int height,
const int level) {
const int stride = 1 << bwl;
const int row = c >> bwl;
const int col = c - (row << bwl);
const int level_minus_1 = level - 1;
int mag;
int count =
get_level_count_mag(&mag, tcoeffs, stride, row, col, level_minus_1,
base_ref_offset, BASE_CONTEXT_POSITION_NUM);
int count = get_level_count_mag(&mag, tcoeffs, stride, height, row, col,
level_minus_1, base_ref_offset,
BASE_CONTEXT_POSITION_NUM);
int ctx_idx = get_base_ctx_from_count_mag(row, col, count, mag, level);
return ctx_idx;
}
@ -173,15 +176,15 @@ static INLINE int get_br_ctx_from_count_mag(int row, int col, int count,
static INLINE int get_br_ctx(const tran_low_t *tcoeffs,
const int c, // raster order
const int bwl) {
const int bwl, const int height) {
const int stride = 1 << bwl;
const int row = c >> bwl;
const int col = c - (row << bwl);
const int level_minus_1 = NUM_BASE_LEVELS;
int mag;
const int count =
get_level_count_mag(&mag, tcoeffs, stride, row, col, level_minus_1,
br_ref_offset, BR_CONTEXT_POSITION_NUM);
const int count = get_level_count_mag(&mag, tcoeffs, stride, height, row, col,
level_minus_1, br_ref_offset,
BR_CONTEXT_POSITION_NUM);
const int ctx = get_br_ctx_from_count_mag(row, col, count, mag);
return ctx;
}
@ -195,7 +198,7 @@ static int sig_ref_offset[SIG_REF_OFFSET_NUM][2] = {
static INLINE int get_nz_map_ctx(const tran_low_t *tcoeffs,
const uint8_t *txb_mask,
const int coeff_idx, // raster order
const int bwl) {
const int bwl, const int height) {
const int row = coeff_idx >> bwl;
const int col = coeff_idx - (row << bwl);
int ctx = 0;
@ -228,7 +231,7 @@ static INLINE int get_nz_map_ctx(const tran_low_t *tcoeffs,
int ref_col = col + sig_ref_offset[idx][1];
int pos;
if (ref_row < 0 || ref_col < 0 || ref_row >= stride || ref_col >= stride)
if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
continue;
pos = (ref_row << bwl) + ref_col;

7
av1/decoder/decodetxb.c
Просмотреть файл

@ -58,6 +58,7 @@ uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
const int16_t *const dequant = xd->plane[plane].seg_dequant[mbmi->segment_id];
const int shift = av1_get_tx_scale(tx_size);
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
const int height = tx_size_high[tx_size];
int cul_level = 0;
unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2];
uint8_t txb_mask[32 * 32] = { 0 };
@ -87,7 +88,7 @@ uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
for (c = 0; c < seg_eob; ++c) {
int is_nz;
int coeff_ctx = get_nz_map_ctx(tcoeffs, txb_mask, scan[c], bwl);
int coeff_ctx = get_nz_map_ctx(tcoeffs, txb_mask, scan[c], bwl, height);
int eob_ctx = get_eob_ctx(tcoeffs, scan[c], txs_ctx);
if (c < seg_eob - 1)
@ -128,7 +129,7 @@ uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
if (*v <= i) continue;
ctx = get_base_ctx(tcoeffs, scan[c], bwl, i + 1);
ctx = get_base_ctx(tcoeffs, scan[c], bwl, height, i + 1);
if (aom_read(r, coeff_base[ctx], tx_size)) {
*v = i + 1;
@ -170,7 +171,7 @@ uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
sign = aom_read_bit(r, ACCT_STR);
}
ctx = get_br_ctx(tcoeffs, scan[c], bwl);
ctx = get_br_ctx(tcoeffs, scan[c], bwl, height);
if (cm->fc->coeff_lps[txs_ctx][plane_type][ctx] == 0) exit(0);

55
av1/encoder/encodetxb.c
Просмотреть файл

@ -86,6 +86,7 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
int c;
int is_nz;
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
const int height = tx_size_high[tx_size];
const int seg_eob = tx_size_2d[tx_size];
uint8_t txb_mask[32 * 32] = { 0 };
uint16_t update_eob = 0;
@ -101,7 +102,7 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
eob_flag = cm->fc->eob_flag[txs_ctx][plane_type];
for (c = 0; c < eob; ++c) {
int coeff_ctx = get_nz_map_ctx(tcoeff, txb_mask, scan[c], bwl);
int coeff_ctx = get_nz_map_ctx(tcoeff, txb_mask, scan[c], bwl, height);
int eob_ctx = get_eob_ctx(tcoeff, scan[c], txs_ctx);
tran_low_t v = tcoeff[scan[c]];
@ -130,7 +131,7 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
if (level <= i) continue;
ctx = get_base_ctx(tcoeff, scan[c], bwl, i + 1);
ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1);
if (level == i + 1) {
aom_write(w, 1, coeff_base[ctx]);
@ -162,7 +163,7 @@ void av1_write_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
}
// level is above 1.
ctx = get_br_ctx(tcoeff, scan[c], bwl);
ctx = get_br_ctx(tcoeff, scan[c], bwl, height);
for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
if (level == (idx + 1 + NUM_BASE_LEVELS)) {
aom_write(w, 1, cm->fc->coeff_lps[txs_ctx][plane_type][ctx]);
@ -217,7 +218,7 @@ void av1_write_coeffs_mb(const AV1_COMMON *const cm, MACROBLOCK *x,
static INLINE void get_base_ctx_set(const tran_low_t *tcoeffs,
int c, // raster order
const int bwl,
const int bwl, const int height,
int ctx_set[NUM_BASE_LEVELS]) {
const int row = c >> bwl;
const int col = c - (row << bwl);
@ -232,7 +233,7 @@ static INLINE void get_base_ctx_set(const tran_low_t *tcoeffs,
int ref_col = col + base_ref_offset[idx][1];
int pos = (ref_row << bwl) + ref_col;
if (ref_row < 0 || ref_col < 0 || ref_row >= stride || ref_col >= stride)
if (ref_row < 0 || ref_col < 0 || ref_row >= height || ref_col >= stride)
continue;
abs_coeff = abs(tcoeffs[pos]);
@ -303,6 +304,8 @@ int av1_cost_coeffs_txb(const AV1_COMP *const cpi, MACROBLOCK *x, int plane,
aom_prob *nz_map = xd->fc->nz_map[txs_ctx][plane_type];
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
const int height = tx_size_high[tx_size];
// txb_mask is only initialized for once here. After that, it will be set when
// coding zero map and then reset when coding level 1 info.
uint8_t txb_mask[32 * 32] = { 0 };
@ -332,7 +335,7 @@ int av1_cost_coeffs_txb(const AV1_COMP *const cpi, MACROBLOCK *x, int plane,
int level = abs(v);
if (c < seg_eob) {
int coeff_ctx = get_nz_map_ctx(qcoeff, txb_mask, scan[c], bwl);
int coeff_ctx = get_nz_map_ctx(qcoeff, txb_mask, scan[c], bwl, height);
cost += av1_cost_bit(nz_map[coeff_ctx], is_nz);
}
@ -349,7 +352,7 @@ int av1_cost_coeffs_txb(const AV1_COMP *const cpi, MACROBLOCK *x, int plane,
cost += av1_cost_bit(128, sign);
}
get_base_ctx_set(qcoeff, scan[c], bwl, ctx_ls);
get_base_ctx_set(qcoeff, scan[c], bwl, height, ctx_ls);
int i;
for (i = 0; i < NUM_BASE_LEVELS; ++i) {
@ -366,7 +369,7 @@ int av1_cost_coeffs_txb(const AV1_COMP *const cpi, MACROBLOCK *x, int plane,
int idx;
int ctx;
ctx = get_br_ctx(qcoeff, scan[c], bwl);
ctx = get_br_ctx(qcoeff, scan[c], bwl, height);
for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
if (level == (idx + 1 + NUM_BASE_LEVELS)) {
@ -416,20 +419,20 @@ static INLINE int has_base(tran_low_t qc, int base_idx) {
static void gen_base_count_mag_arr(int (*base_count_arr)[MAX_TX_SQUARE],
int (*base_mag_arr)[2],
const tran_low_t *qcoeff, int stride,
int eob, const int16_t *scan) {
int height, int eob, const int16_t *scan) {
for (int c = 0; c < eob; ++c) {
const int coeff_idx = scan[c]; // raster order
if (!has_base(qcoeff[coeff_idx], 0)) continue;
const int row = coeff_idx / stride;
const int col = coeff_idx % stride;
int *mag = base_mag_arr[coeff_idx];
get_mag(mag, qcoeff, stride, row, col, base_ref_offset,
get_mag(mag, qcoeff, stride, height, row, col, base_ref_offset,
BASE_CONTEXT_POSITION_NUM);
for (int i = 0; i < NUM_BASE_LEVELS; ++i) {
if (!has_base(qcoeff[coeff_idx], i)) continue;
int *count = base_count_arr[i] + coeff_idx;
*count = get_level_count(qcoeff, stride, row, col, i, base_ref_offset,
BASE_CONTEXT_POSITION_NUM);
*count = get_level_count(qcoeff, stride, height, row, col, i,
base_ref_offset, BASE_CONTEXT_POSITION_NUM);
}
}
}
@ -486,8 +489,8 @@ static INLINE int has_br(tran_low_t qc) {
}
static void gen_br_count_mag_arr(int *br_count_arr, int (*br_mag_arr)[2],
const tran_low_t *qcoeff, int stride, int eob,
const int16_t *scan) {
const tran_low_t *qcoeff, int stride,
int height, int eob, const int16_t *scan) {
for (int c = 0; c < eob; ++c) {
const int coeff_idx = scan[c]; // raster order
if (!has_br(qcoeff[coeff_idx])) continue;
@ -495,9 +498,9 @@ static void gen_br_count_mag_arr(int *br_count_arr, int (*br_mag_arr)[2],
const int col = coeff_idx % stride;
int *count = br_count_arr + coeff_idx;
int *mag = br_mag_arr[coeff_idx];
*count = get_level_count(qcoeff, stride, row, col, NUM_BASE_LEVELS,
*count = get_level_count(qcoeff, stride, height, row, col, NUM_BASE_LEVELS,
br_ref_offset, BR_CONTEXT_POSITION_NUM);
get_mag(mag, qcoeff, stride, row, col, br_ref_offset,
get_mag(mag, qcoeff, stride, height, row, col, br_ref_offset,
BR_CONTEXT_POSITION_NUM);
}
}
@ -556,13 +559,14 @@ void gen_txb_cache(TxbCache *txb_cache, TxbInfo *txb_info) {
txb_info->qcoeff, txb_info->bwl, txb_info->eob,
txb_info->scan_order);
gen_base_count_mag_arr(txb_cache->base_count_arr, txb_cache->base_mag_arr,
txb_info->qcoeff, txb_info->stride, txb_info->eob,
scan);
txb_info->qcoeff, txb_info->stride, txb_info->height,
txb_info->eob, scan);
gen_base_ctx_arr(txb_cache->base_ctx_arr, txb_cache->base_count_arr,
txb_cache->base_mag_arr, txb_info->qcoeff, txb_info->stride,
txb_info->eob, scan);
gen_br_count_mag_arr(txb_cache->br_count_arr, txb_cache->br_mag_arr,
txb_info->qcoeff, txb_info->stride, txb_info->eob, scan);
txb_info->qcoeff, txb_info->stride, txb_info->height,
txb_info->eob, scan);
gen_br_ctx_arr(txb_cache->br_ctx_arr, txb_cache->br_count_arr,
txb_cache->br_mag_arr, txb_info->qcoeff, txb_info->stride,
txb_info->eob, scan);
@ -1131,7 +1135,8 @@ static int get_coeff_cost(tran_low_t qc, int scan_idx, TxbInfo *txb_info,
txb_ctx->dc_sign_ctx);
int ctx_ls[NUM_BASE_LEVELS] = { 0 };
get_base_ctx_set(txb_info->qcoeff, scan[scan_idx], txb_info->bwl, ctx_ls);
get_base_ctx_set(txb_info->qcoeff, scan[scan_idx], txb_info->bwl,
txb_info->height, ctx_ls);
int i;
for (i = 0; i < NUM_BASE_LEVELS; ++i) {
@ -1139,7 +1144,8 @@ static int get_coeff_cost(tran_low_t qc, int scan_idx, TxbInfo *txb_info,
}
if (abs_qc > NUM_BASE_LEVELS) {
int ctx = get_br_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->bwl);
int ctx = get_br_ctx(txb_info->qcoeff, scan[scan_idx], txb_info->bwl,
txb_info->height);
cost += get_br_cost(abs_qc, ctx, txb_probs->coeff_lps);
cost += get_golomb_cost(abs_qc);
}
@ -1557,6 +1563,7 @@ void av1_update_and_record_txb_context(int plane, int block, int blk_row,
get_txb_ctx(plane_bsize, tx_size, plane, pd->above_context + blk_col,
pd->left_context + blk_row, &txb_ctx);
const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
const int height = tx_size_high[tx_size];
int cul_level = 0;
unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2];
uint8_t txb_mask[32 * 32] = { 0 };
@ -1585,7 +1592,7 @@ 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, txb_mask, scan[c], bwl);
int coeff_ctx = get_nz_map_ctx(tcoeff, txb_mask, scan[c], bwl, height);
int eob_ctx = get_eob_ctx(tcoeff, scan[c], txsize_ctx);
if (c == seg_eob - 1) break;
@ -1608,7 +1615,7 @@ void av1_update_and_record_txb_context(int plane, int block, int blk_row,
if (level <= i) continue;
ctx = get_base_ctx(tcoeff, scan[c], bwl, i + 1);
ctx = get_base_ctx(tcoeff, scan[c], bwl, height, i + 1);
if (level == i + 1) {
++td->counts->coeff_base[txsize_ctx][plane_type][i][ctx][1];
@ -1643,7 +1650,7 @@ void av1_update_and_record_txb_context(int plane, int block, int blk_row,
}
// level is above 1.
ctx = get_br_ctx(tcoeff, scan[c], bwl);
ctx = get_br_ctx(tcoeff, scan[c], bwl, height);
for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
if (level == (idx + 1 + NUM_BASE_LEVELS)) {
++td->counts->coeff_lps[txsize_ctx][plane_type][ctx][1];