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Код Задачи Пакеты Проекты Релизы Вики Активность

Eliminate num_8x8 and num_4x4 width/height lookups 

Also some log2 lookups.

Pass in 8x8 block width/height and log2 num4x4s instead.

Change-Id: I8ea9a1ec1e0bbab23f8ba556954a1b5433f4d613
This commit is contained in:
Scott LaVarnway 2015-07-09 05:30:46 -07:00
Родитель 8783a8a97c
Коммит 13a4f14710
6 изменённых файлов: 299 добавлений и 116 удалений
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7
vp9/common/vp9_blockd.h
Просмотреть файл

@ -128,6 +128,11 @@ struct macroblockd_plane {
ENTROPY_CONTEXT *left_context;
int16_t seg_dequant[MAX_SEGMENTS][2];
// number of 4x4s in current block
uint16_t n4_w, n4_h;
// log2 of n4_w, n4_h
uint8_t n4_wl, n4_hl;
// encoder
const int16_t *dequant;
};
@ -144,6 +149,8 @@ typedef struct RefBuffer {
typedef struct macroblockd {
struct macroblockd_plane plane[MAX_MB_PLANE];
uint8_t bmode_blocks_wl;
uint8_t bmode_blocks_hl;
FRAME_COUNTS *counts;
TileInfo tile;

274
vp9/decoder/vp9_decodeframe.c
Просмотреть файл

@ -361,6 +361,16 @@ static void inverse_transform_block_intra(MACROBLOCKD* xd, int plane,
}
}
static INLINE void dec_txfrm_block_to_raster_xy(int bwl,
TX_SIZE tx_size, int block,
int *x, int *y) {
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;
}
struct intra_args {
MACROBLOCKD *xd;
vp9_reader *r;
@ -368,7 +378,6 @@ struct intra_args {
};
static void predict_and_reconstruct_intra_block(int plane, int block,
BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, void *arg) {
struct intra_args *const args = (struct intra_args *)arg;
MACROBLOCKD *const xd = args->xd;
@ -378,11 +387,12 @@ static void predict_and_reconstruct_intra_block(int plane, int block,
: mi->mbmi.uv_mode;
int x, y;
uint8_t *dst;
txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &x, &y);
const int bwl = pd->n4_wl;
dec_txfrm_block_to_raster_xy(bwl, tx_size, block, &x, &y);
dst = &pd->dst.buf[4 * y * pd->dst.stride + 4 * x];
vp9_predict_intra_block(xd, block >> (tx_size << 1),
b_width_log2_lookup[plane_bsize], tx_size, mode,
bwl, tx_size, mode,
dst, pd->dst.stride, dst, pd->dst.stride,
x, y, plane);
@ -391,36 +401,25 @@ static void predict_and_reconstruct_intra_block(int plane, int block,
DCT_DCT : intra_mode_to_tx_type_lookup[mode];
const scan_order *sc = (plane || xd->lossless) ?
&vp9_default_scan_orders[tx_size] : &vp9_scan_orders[tx_size][tx_type];
const int eob = vp9_decode_block_tokens(xd, plane, sc,
plane_bsize, x, y, tx_size,
const int eob = vp9_decode_block_tokens(xd, plane, sc, x, y, tx_size,
args->r, args->seg_id);
inverse_transform_block_intra(xd, plane, tx_type, tx_size,
dst, pd->dst.stride, eob);
}
}
struct inter_args {
MACROBLOCKD *xd;
vp9_reader *r;
int *eobtotal;
int seg_id;
};
static void reconstruct_inter_block(int plane, int row, int col,
BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, struct inter_args *arg) {
struct inter_args *args = (struct inter_args *)arg;
MACROBLOCKD *const xd = args->xd;
static int reconstruct_inter_block(MACROBLOCKD *const xd, vp9_reader *r,
MB_MODE_INFO *const mbmi, int plane,
int row, int col, TX_SIZE tx_size) {
struct macroblockd_plane *const pd = &xd->plane[plane];
int eob;
const scan_order *sc = &vp9_default_scan_orders[tx_size];
eob = vp9_decode_block_tokens(xd, plane, sc, plane_bsize,
col, row, tx_size, args->r, args->seg_id);
const int eob = vp9_decode_block_tokens(xd, plane, sc, col, row, tx_size, r,
mbmi->segment_id);
inverse_transform_block_inter(xd, plane, tx_size,
&pd->dst.buf[4 * row * pd->dst.stride + 4 * col],
pd->dst.stride, eob);
*args->eobtotal += eob;
return eob;
}
static void build_mc_border(const uint8_t *src, int src_stride,
@ -721,8 +720,7 @@ static void dec_build_inter_predictors(VP9Decoder *const pbi, MACROBLOCKD *xd,
static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
MACROBLOCKD *xd,
int mi_row, int mi_col,
BLOCK_SIZE bsize) {
int mi_row, int mi_col) {
int plane;
const int mi_x = mi_col * MI_SIZE;
const int mi_y = mi_row * MI_SIZE;
@ -732,15 +730,13 @@ static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
const int is_compound = has_second_ref(&mi->mbmi);
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize,
&xd->plane[plane]);
struct macroblockd_plane *const pd = &xd->plane[plane];
struct buf_2d *const dst_buf = &pd->dst;
const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
const int num_4x4_w = pd->n4_w;
const int num_4x4_h = pd->n4_h;
const int bw = 4 * num_4x4_w;
const int bh = 4 * num_4x4_h;
const int n4w_x4 = 4 * num_4x4_w;
const int n4h_x4 = 4 * num_4x4_h;
int ref;
for (ref = 0; ref < 1 + is_compound; ++ref) {
@ -753,11 +749,10 @@ static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
if (sb_type < BLOCK_8X8) {
int i = 0, x, y;
assert(bsize == BLOCK_8X8);
for (y = 0; y < num_4x4_h; ++y) {
for (x = 0; x < num_4x4_w; ++x) {
const MV mv = average_split_mvs(pd, mi, ref, i++);
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
dec_build_inter_predictors(pbi, xd, plane, n4w_x4, n4h_x4,
4 * x, 4 * y, 4, 4, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv,
ref_frame_buf, is_scaled, ref);
@ -765,8 +760,8 @@ static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
}
} else {
const MV mv = mi->mbmi.mv[ref].as_mv;
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
0, 0, bw, bh, mi_x, mi_y, kernel,
dec_build_inter_predictors(pbi, xd, plane, n4w_x4, n4h_x4,
0, 0, n4w_x4, n4h_x4, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv, ref_frame_buf,
is_scaled, ref);
}
@ -774,24 +769,105 @@ static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
}
}
static INLINE TX_SIZE dec_get_uv_tx_size(const MB_MODE_INFO *mbmi,
int n4_wl, int n4_hl) {
// get minimum log2 num4x4s dimension
const int x = MIN(n4_wl, n4_hl);
return MIN(mbmi->tx_size, x);
}
// TODO(slavarnway): Eliminate the foreach_ functions in future commits.
// NOTE: Jingning removed the foreach_ for recon inter in a previous commit.
typedef void (*dec_foreach_transformed_block_visitor)(int plane, int block,
TX_SIZE tx_size,
void *arg);
static void dec_foreach_transformed_block_in_plane(
const MACROBLOCKD *const xd,
int plane,
dec_foreach_transformed_block_visitor visit, void *arg) {
const struct macroblockd_plane *const pd = &xd->plane[plane];
const MB_MODE_INFO* mbmi = &xd->mi[0]->mbmi;
// block and transform sizes, in number of 4x4 blocks log 2 ("*_b")
// 4x4=0, 8x8=2, 16x16=4, 32x32=6, 64x64=8
// transform size varies per plane, look it up in a common way.
const TX_SIZE tx_size =
plane ? dec_get_uv_tx_size(mbmi, pd->n4_wl, pd->n4_hl)
: mbmi->tx_size;
const int num_4x4_w = pd->n4_w;
const int num_4x4_h = pd->n4_h;
const int step = 1 << (tx_size << 1);
int i = 0, r, c;
// If mb_to_right_edge is < 0 we are in a situation in which
// the current block size extends into the UMV and we won't
// visit the sub blocks that are wholly within the UMV.
const int max_blocks_wide = num_4x4_w + (xd->mb_to_right_edge >= 0 ? 0 :
xd->mb_to_right_edge >> (5 + pd->subsampling_x));
const int max_blocks_high = num_4x4_h + (xd->mb_to_bottom_edge >= 0 ? 0 :
xd->mb_to_bottom_edge >> (5 + pd->subsampling_y));
// Keep track of the row and column of the blocks we use so that we know
// if we are in the unrestricted motion border.
for (r = 0; r < max_blocks_high; r += (1 << tx_size)) {
for (c = 0; c < num_4x4_w; c += (1 << tx_size)) {
// Skip visiting the sub blocks that are wholly within the UMV.
if (c < max_blocks_wide)
visit(plane, i, tx_size, arg);
i += step;
}
}
}
static void dec_foreach_transformed_block(const MACROBLOCKD* const xd,
dec_foreach_transformed_block_visitor visit, void *arg) {
int plane;
for (plane = 0; plane < MAX_MB_PLANE; ++plane)
dec_foreach_transformed_block_in_plane(xd, plane, visit, arg);
}
static INLINE void dec_reset_skip_context(MACROBLOCKD *xd) {
int i;
for (i = 0; i < MAX_MB_PLANE; i++) {
struct macroblockd_plane *const pd = &xd->plane[i];
memset(pd->above_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_w);
memset(pd->left_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_h);
}
}
static void set_plane_n4(MACROBLOCKD *const xd, int bw, int bh, int bwl,
int bhl) {
int i;
for (i = 0; i < MAX_MB_PLANE; i++) {
xd->plane[i].n4_w = (bw << 1) >> xd->plane[i].subsampling_x;
xd->plane[i].n4_h = (bh << 1) >> xd->plane[i].subsampling_y;
xd->plane[i].n4_wl = bwl - xd->plane[i].subsampling_x;
xd->plane[i].n4_hl = bhl - xd->plane[i].subsampling_y;
}
}
static MB_MODE_INFO *set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,
BLOCK_SIZE bsize, int mi_row, int mi_col) {
const int bw = num_8x8_blocks_wide_lookup[bsize];
const int bh = num_8x8_blocks_high_lookup[bsize];
const int x_mis = MIN(bw, cm->mi_cols - mi_col);
const int y_mis = MIN(bh, cm->mi_rows - mi_row);
BLOCK_SIZE bsize, int mi_row, int mi_col,
int bw, int bh, int x_mis, int y_mis,
int bwl, int bhl) {
const int offset = mi_row * cm->mi_stride + mi_col;
int x, y;
const TileInfo *const tile = &xd->tile;
xd->mi = cm->mi_grid_visible + offset;
xd->mi[0] = &cm->mi[offset];
// TODO(slavarnway): Generate sb_type based on bwl and bhl, instead of
// passing bsize from decode_partition().
xd->mi[0]->mbmi.sb_type = bsize;
for (y = 0; y < y_mis; ++y)
for (x = !y; x < x_mis; ++x) {
xd->mi[y * cm->mi_stride + x] = xd->mi[0];
}
set_plane_n4(xd, bw, bh, bwl, bhl);
set_skip_context(xd, mi_row, mi_col);
// Distance of Mb to the various image edges. These are specified to 8th pel
@ -804,10 +880,17 @@ static MB_MODE_INFO *set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,
static void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col,
vp9_reader *r, BLOCK_SIZE bsize) {
vp9_reader *r, BLOCK_SIZE bsize,
int bwl, int bhl) {
VP9_COMMON *const cm = &pbi->common;
const int less8x8 = bsize < BLOCK_8X8;
MB_MODE_INFO *mbmi = set_offsets(cm, xd, bsize, mi_row, mi_col);
const int bw = 1 << (bwl - 1);
const int bh = 1 << (bhl - 1);
const int x_mis = MIN(bw, cm->mi_cols - mi_col);
const int y_mis = MIN(bh, cm->mi_rows - mi_row);
MB_MODE_INFO *mbmi = set_offsets(cm, xd, bsize, mi_row, mi_col,
bw, bh, x_mis, y_mis, bwl, bhl);
if (bsize >= BLOCK_8X8 && (cm->subsampling_x || cm->subsampling_y)) {
const BLOCK_SIZE uv_subsize =
@ -817,46 +900,43 @@ static void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd,
VPX_CODEC_CORRUPT_FRAME, "Invalid block size.");
}
vp9_read_mode_info(pbi, xd, mi_row, mi_col, r);
if (less8x8)
bsize = BLOCK_8X8;
vp9_read_mode_info(pbi, xd, mi_row, mi_col, r, x_mis, y_mis);
if (mbmi->skip) {
reset_skip_context(xd, bsize);
dec_reset_skip_context(xd);
}
if (!is_inter_block(mbmi)) {
struct intra_args arg = {xd, r, mbmi->segment_id};
vp9_foreach_transformed_block(xd, bsize,
dec_foreach_transformed_block(xd,
predict_and_reconstruct_intra_block, &arg);
} else {
// Prediction
dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col, bsize);
dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col);
// Reconstruction
if (!mbmi->skip) {
int eobtotal = 0;
struct inter_args arg = {xd, r, &eobtotal, mbmi->segment_id};
int plane;
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const struct macroblockd_plane *const pd = &xd->plane[plane];
const TX_SIZE tx_size = plane ? get_uv_tx_size(mbmi, pd)
: mbmi->tx_size;
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd);
const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
const TX_SIZE tx_size =
plane ? dec_get_uv_tx_size(mbmi, pd->n4_wl, pd->n4_hl)
: mbmi->tx_size;
const int num_4x4_w = pd->n4_w;
const int num_4x4_h = pd->n4_h;
const int step = (1 << tx_size);
int r, c;
int row, col;
const int max_blocks_wide = num_4x4_w + (xd->mb_to_right_edge >= 0 ?
0 : xd->mb_to_right_edge >> (5 + pd->subsampling_x));
const int max_blocks_high = num_4x4_h + (xd->mb_to_bottom_edge >= 0 ?
0 : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y));
for (r = 0; r < max_blocks_high; r += step)
for (c = 0; c < max_blocks_wide; c += step)
reconstruct_inter_block(plane, r, c, plane_bsize, tx_size, &arg);
for (row = 0; row < max_blocks_high; row += step)
for (col = 0; col < max_blocks_wide; col += step)
eobtotal += reconstruct_inter_block(xd, r, mbmi, plane, row, col,
tx_size);
}
if (!less8x8 && eobtotal == 0)
@ -867,10 +947,36 @@ static void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd,
xd->corrupted |= vp9_reader_has_error(r);
}
static INLINE int dec_partition_plane_context(const MACROBLOCKD *xd,
int mi_row, int mi_col,
int bsl) {
const PARTITION_CONTEXT *above_ctx = xd->above_seg_context + mi_col;
const PARTITION_CONTEXT *left_ctx = xd->left_seg_context + (mi_row & MI_MASK);
int above = (*above_ctx >> bsl) & 1 , left = (*left_ctx >> bsl) & 1;
// assert(bsl >= 0);
return (left * 2 + above) + bsl * PARTITION_PLOFFSET;
}
static INLINE void dec_update_partition_context(MACROBLOCKD *xd,
int mi_row, int mi_col,
BLOCK_SIZE subsize,
int bw) {
PARTITION_CONTEXT *const above_ctx = xd->above_seg_context + mi_col;
PARTITION_CONTEXT *const left_ctx = xd->left_seg_context + (mi_row & MI_MASK);
// update the partition context at the end notes. set partition bits
// of block sizes larger than the current one to be one, and partition
// bits of smaller block sizes to be zero.
memset(above_ctx, partition_context_lookup[subsize].above, bw);
memset(left_ctx, partition_context_lookup[subsize].left, bw);
}
static PARTITION_TYPE read_partition(MACROBLOCKD *xd, int mi_row, int mi_col,
BLOCK_SIZE bsize, vp9_reader *r,
int has_rows, int has_cols) {
const int ctx = partition_plane_context(xd, mi_row, mi_col, bsize);
vp9_reader *r,
int has_rows, int has_cols, int bsl) {
const int ctx = dec_partition_plane_context(xd, mi_row, mi_col, bsl);
const vp9_prob *const probs = get_partition_probs(xd, ctx);
FRAME_COUNTS *counts = xd->counts;
PARTITION_TYPE p;
@ -890,11 +996,14 @@ static PARTITION_TYPE read_partition(MACROBLOCKD *xd, int mi_row, int mi_col,
return p;
}
// TODO(slavarnway): eliminate bsize and subsize in future commits
static void decode_partition(VP9Decoder *const pbi, MACROBLOCKD *const xd,
int mi_row, int mi_col,
vp9_reader* r, BLOCK_SIZE bsize) {
vp9_reader* r, BLOCK_SIZE bsize, int n4x4_l2) {
VP9_COMMON *const cm = &pbi->common;
const int hbs = num_8x8_blocks_wide_lookup[bsize] / 2;
const int n8x8_l2 = n4x4_l2 - 1;
const int num_8x8_wh = 1 << n8x8_l2;
const int hbs = num_8x8_wh >> 1;
PARTITION_TYPE partition;
BLOCK_SIZE subsize;
const int has_rows = (mi_row + hbs) < cm->mi_rows;
@ -903,30 +1012,37 @@ static void decode_partition(VP9Decoder *const pbi, MACROBLOCKD *const xd,
if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
return;
partition = read_partition(xd, mi_row, mi_col, bsize, r, has_rows, has_cols);
subsize = get_subsize(bsize, partition);
if (bsize == BLOCK_8X8) {
decode_block(pbi, xd, mi_row, mi_col, r, subsize);
partition = read_partition(xd, mi_row, mi_col, r, has_rows, has_cols,
n8x8_l2);
subsize = subsize_lookup[partition][bsize]; // get_subsize(bsize, partition);
if (!hbs) {
// calculate bmode block dimensions (log 2)
xd->bmode_blocks_wl = 1 >> !!(partition & PARTITION_VERT);
xd->bmode_blocks_hl = 1 >> !!(partition & PARTITION_HORZ);
decode_block(pbi, xd, mi_row, mi_col, r, subsize, 1, 1);
} else {
switch (partition) {
case PARTITION_NONE:
decode_block(pbi, xd, mi_row, mi_col, r, subsize);
decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n4x4_l2);
break;
case PARTITION_HORZ:
decode_block(pbi, xd, mi_row, mi_col, r, subsize);
decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n8x8_l2);
if (has_rows)
decode_block(pbi, xd, mi_row + hbs, mi_col, r, subsize);
decode_block(pbi, xd, mi_row + hbs, mi_col, r, subsize, n4x4_l2,
n8x8_l2);
break;
case PARTITION_VERT:
decode_block(pbi, xd, mi_row, mi_col, r, subsize);
decode_block(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2, n4x4_l2);
if (has_cols)
decode_block(pbi, xd, mi_row, mi_col + hbs, r, subsize);
decode_block(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2,
n4x4_l2);
break;
case PARTITION_SPLIT:
decode_partition(pbi, xd, mi_row, mi_col, r, subsize);
decode_partition(pbi, xd, mi_row, mi_col + hbs, r, subsize);
decode_partition(pbi, xd, mi_row + hbs, mi_col, r, subsize);
decode_partition(pbi, xd, mi_row + hbs, mi_col + hbs, r, subsize);
decode_partition(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2);
decode_partition(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2);
decode_partition(pbi, xd, mi_row + hbs, mi_col, r, subsize, n8x8_l2);
decode_partition(pbi, xd, mi_row + hbs, mi_col + hbs, r, subsize,
n8x8_l2);
break;
default:
assert(0 && "Invalid partition type");
@ -936,7 +1052,7 @@ static void decode_partition(VP9Decoder *const pbi, MACROBLOCKD *const xd,
// update partition context
if (bsize >= BLOCK_8X8 &&
(bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
update_partition_context(xd, mi_row, mi_col, subsize, bsize);
dec_update_partition_context(xd, mi_row, mi_col, subsize, num_8x8_wh);
}
static void setup_token_decoder(const uint8_t *data,
@ -1440,8 +1556,8 @@ static const uint8_t *decode_tiles(VP9Decoder *pbi,
vp9_zero(tile_data->xd.left_seg_context);
for (mi_col = tile.mi_col_start; mi_col < tile.mi_col_end;
mi_col += MI_BLOCK_SIZE) {
decode_partition(pbi, &tile_data->xd, mi_row, mi_col,
&tile_data->bit_reader, BLOCK_64X64);
decode_partition(pbi, &tile_data->xd, mi_row,
mi_col, &tile_data->bit_reader, BLOCK_64X64, 4);
}
pbi->mb.corrupted |= tile_data->xd.corrupted;
if (pbi->mb.corrupted)
@ -1515,7 +1631,7 @@ static int tile_worker_hook(TileWorkerData *const tile_data,
mi_col += MI_BLOCK_SIZE) {
decode_partition(tile_data->pbi, &tile_data->xd,
mi_row, mi_col, &tile_data->bit_reader,
BLOCK_64X64);
BLOCK_64X64, 4);
}
}
return !tile_data->xd.corrupted;

80
vp9/decoder/vp9_decodemv.c
Просмотреть файл

@ -91,41 +91,44 @@ static TX_SIZE read_tx_size(VP9_COMMON *cm, MACROBLOCKD *xd,
return MIN(max_tx_size, tx_mode_to_biggest_tx_size[tx_mode]);
}
static void set_segment_id(VP9_COMMON *cm, BLOCK_SIZE bsize,
int mi_row, int mi_col, int segment_id) {
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 = MIN(cm->mi_cols - mi_col, bw);
const int ymis = MIN(cm->mi_rows - mi_row, bh);
static int dec_get_segment_id(const VP9_COMMON *cm, const uint8_t *segment_ids,
int mi_offset, int x_mis, int y_mis) {
int x, y, segment_id = INT_MAX;
for (y = 0; y < y_mis; y++)
for (x = 0; x < x_mis; x++)
segment_id = MIN(segment_id,
segment_ids[mi_offset + y * cm->mi_cols + x]);
assert(segment_id >= 0 && segment_id < MAX_SEGMENTS);
return segment_id;
}
static void set_segment_id(VP9_COMMON *cm, int mi_offset,
int x_mis, int y_mis, int segment_id) {
int x, y;
assert(segment_id >= 0 && segment_id < MAX_SEGMENTS);
for (y = 0; y < ymis; y++)
for (x = 0; x < xmis; x++)
for (y = 0; y < y_mis; y++)
for (x = 0; x < x_mis; x++)
cm->current_frame_seg_map[mi_offset + y * cm->mi_cols + x] = segment_id;
}
static void copy_segment_id(const VP9_COMMON *cm,
const uint8_t *last_segment_ids,
uint8_t *current_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 = MIN(cm->mi_cols - mi_col, bw);
const int ymis = MIN(cm->mi_rows - mi_row, bh);
int mi_offset, int x_mis, int y_mis) {
int x, y;
for (y = 0; y < ymis; y++)
for (x = 0; x < xmis; x++)
for (y = 0; y < y_mis; y++)
for (x = 0; x < x_mis; x++)
current_segment_ids[mi_offset + y * cm->mi_cols + x] = last_segment_ids ?
last_segment_ids[mi_offset + y * cm->mi_cols + x] : 0;
}
static int read_intra_segment_id(VP9_COMMON *const cm, BLOCK_SIZE bsize,
int mi_row, int mi_col,
static int read_intra_segment_id(VP9_COMMON *const cm, int mi_offset,
int x_mis, int y_mis,
vp9_reader *r) {
struct segmentation *const seg = &cm->seg;
int segment_id;
@ -135,12 +138,12 @@ static int read_intra_segment_id(VP9_COMMON *const cm, BLOCK_SIZE bsize,
if (!seg->update_map) {
copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map,
bsize, mi_row, mi_col);
mi_offset, x_mis, y_mis);
return 0;
}
segment_id = read_segment_id(r, seg);
set_segment_id(cm, bsize, mi_row, mi_col, segment_id);
set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id);
return segment_id;
}
@ -148,18 +151,25 @@ static int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd,
int mi_row, int mi_col, vp9_reader *r) {
struct segmentation *const seg = &cm->seg;
MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
const BLOCK_SIZE bsize = mbmi->sb_type;
int predicted_segment_id, segment_id;
const int mi_offset = mi_row * cm->mi_cols + mi_col;
const int bw = xd->plane[0].n4_w >> 1;
const int bh = xd->plane[0].n4_h >> 1;
// TODO(slavarnway): move x_mis, y_mis into xd ?????
const int x_mis = MIN(cm->mi_cols - mi_col, bw);
const int y_mis = MIN(cm->mi_rows - mi_row, bh);
if (!seg->enabled)
return 0; // Default for disabled segmentation
predicted_segment_id = cm->last_frame_seg_map ?
get_segment_id(cm, cm->last_frame_seg_map, bsize, mi_row, mi_col) : 0;
dec_get_segment_id(cm, cm->last_frame_seg_map, mi_offset, x_mis, y_mis) :
0;
if (!seg->update_map) {
copy_segment_id(cm, cm->last_frame_seg_map, cm->current_frame_seg_map,
bsize, mi_row, mi_col);
mi_offset, x_mis, y_mis);
return predicted_segment_id;
}
@ -171,7 +181,7 @@ static int read_inter_segment_id(VP9_COMMON *const cm, MACROBLOCKD *const xd,
} else {
segment_id = read_segment_id(r, seg);
}
set_segment_id(cm, bsize, mi_row, mi_col, segment_id);
set_segment_id(cm, mi_offset, x_mis, y_mis, segment_id);
return segment_id;
}
@ -198,8 +208,15 @@ static void read_intra_frame_mode_info(VP9_COMMON *const cm,
const MODE_INFO *left_mi = xd->left_mi;
const BLOCK_SIZE bsize = mbmi->sb_type;
int i;
const int mi_offset = mi_row * cm->mi_cols + mi_col;
const int bw = xd->plane[0].n4_w >> 1;
const int bh = xd->plane[0].n4_h >> 1;
mbmi->segment_id = read_intra_segment_id(cm, bsize, mi_row, mi_col, r);
// TODO(slavarnway): move x_mis, y_mis into xd ?????
const int x_mis = MIN(cm->mi_cols - mi_col, bw);
const int y_mis = MIN(cm->mi_rows - mi_row, bh);
mbmi->segment_id = read_intra_segment_id(cm, mi_offset, x_mis, y_mis, r);
mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r);
mbmi->tx_size = read_tx_size(cm, xd, 1, r);
mbmi->ref_frame[0] = INTRA_FRAME;
@ -519,8 +536,8 @@ static void read_inter_block_mode_info(VP9Decoder *const pbi,
: cm->interp_filter;
if (bsize < BLOCK_8X8) {
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
const int num_4x4_w = 1 << xd->bmode_blocks_wl;
const int num_4x4_h = 1 << xd->bmode_blocks_hl;
int idx, idy;
PREDICTION_MODE b_mode;
int_mv nearest_sub8x8[2], near_sub8x8[2];
@ -589,13 +606,10 @@ static void read_inter_frame_mode_info(VP9Decoder *const pbi,
}
void vp9_read_mode_info(VP9Decoder *const pbi, MACROBLOCKD *xd,
int mi_row, int mi_col, vp9_reader *r) {
int mi_row, int mi_col, vp9_reader *r,
int x_mis, int y_mis) {
VP9_COMMON *const cm = &pbi->common;
MODE_INFO *const mi = xd->mi[0];
const int bw = num_8x8_blocks_wide_lookup[mi->mbmi.sb_type];
const int bh = num_8x8_blocks_high_lookup[mi->mbmi.sb_type];
const int x_mis = MIN(bw, cm->mi_cols - mi_col);
const int y_mis = MIN(bh, cm->mi_rows - mi_row);
MV_REF* frame_mvs = cm->cur_frame->mvs + mi_row * cm->mi_cols + mi_col;
int w, h;

3
vp9/decoder/vp9_decodemv.h
Просмотреть файл

@ -19,7 +19,8 @@ extern "C" {
#endif
void vp9_read_mode_info(VP9Decoder *const pbi, MACROBLOCKD *xd,
int mi_row, int mi_col, vp9_reader *r);
int mi_row, int mi_col, vp9_reader *r,
int x_mis, int y_mis);
#ifdef __cplusplus
} // extern "C"

49
vp9/decoder/vp9_detokenize.c
Просмотреть файл

@ -205,9 +205,54 @@ static int decode_coefs(const MACROBLOCKD *xd,
return c;
}
// TODO(slavarnway): Decode version of vp9_set_context. Modify vp9_set_context
// after testing is complete, then delete this version.
static
void dec_set_contexts(const MACROBLOCKD *xd, struct macroblockd_plane *pd,
TX_SIZE tx_size, int has_eob,
int aoff, int loff) {
ENTROPY_CONTEXT *const a = pd->above_context + aoff;
ENTROPY_CONTEXT *const l = pd->left_context + loff;
const int tx_size_in_blocks = 1 << tx_size;
// above
if (has_eob && xd->mb_to_right_edge < 0) {
int i;
const int blocks_wide = pd->n4_w +
(xd->mb_to_right_edge >> (5 + pd->subsampling_x));
int above_contexts = tx_size_in_blocks;
if (above_contexts + aoff > blocks_wide)
above_contexts = blocks_wide - aoff;
for (i = 0; i < above_contexts; ++i)
a[i] = has_eob;
for (i = above_contexts; i < tx_size_in_blocks; ++i)
a[i] = 0;
} else {
memset(a, has_eob, sizeof(ENTROPY_CONTEXT) * tx_size_in_blocks);
}
// left
if (has_eob && xd->mb_to_bottom_edge < 0) {
int i;
const int blocks_high = pd->n4_h +
(xd->mb_to_bottom_edge >> (5 + pd->subsampling_y));
int left_contexts = tx_size_in_blocks;
if (left_contexts + loff > blocks_high)
left_contexts = blocks_high - loff;
for (i = 0; i < left_contexts; ++i)
l[i] = has_eob;
for (i = left_contexts; i < tx_size_in_blocks; ++i)
l[i] = 0;
} else {
memset(l, has_eob, sizeof(ENTROPY_CONTEXT) * tx_size_in_blocks);
}
}
int vp9_decode_block_tokens(MACROBLOCKD *xd,
int plane, const scan_order *sc,
BLOCK_SIZE plane_bsize, int x, int y,
int x, int y,
TX_SIZE tx_size, vp9_reader *r,
int seg_id) {
struct macroblockd_plane *const pd = &xd->plane[plane];
@ -217,7 +262,7 @@ int vp9_decode_block_tokens(MACROBLOCKD *xd,
const int eob = decode_coefs(xd, pd->plane_type,
pd->dqcoeff, tx_size,
dequant, ctx, sc->scan, sc->neighbors, r);
vp9_set_contexts(xd, pd, plane_bsize, tx_size, eob > 0, x, y);
dec_set_contexts(xd, pd, tx_size, eob > 0, x, y);
return eob;
}

2
vp9/decoder/vp9_detokenize.h
Просмотреть файл

@ -22,7 +22,7 @@ extern "C" {
int vp9_decode_block_tokens(MACROBLOCKD *xd,
int plane, const scan_order *sc,
BLOCK_SIZE plane_bsize, int x, int y,
int x, int y,
TX_SIZE tx_size, vp9_reader *r,
int seg_id);