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vpx/vp10/common/loopfilter.c
Ronald S. Bultje a5d930e464 vp10: don't reset contextual skip flag if block has no coefficients. 
The implicitly changed value would be used for contextualizing future
skip flags of neighbour blocks (bottom/right), which is certainly not
what was intended. The original code stems from vp8, and was useful
in cases where coding of the skip flag was disabled. In vp9, the skip
flag is always coded. The result of this change is that for bitstream
parsing purposes, decoding of the skip flag becomes independent of
decoding of block coefficients.

See issue 1014.

Change-Id: I8629e6abe76f7c1d649f28cd6fe22a675ce4a15d
2015-09-16 06:41:51 -04:00

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/*
* Copyright (c) 2010 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.
*/
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vp10/common/loopfilter.h"
#include "vp10/common/onyxc_int.h"
#include "vp10/common/reconinter.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
#include "vp10/common/seg_common.h"
// 64 bit masks for left transform size. Each 1 represents a position where
// we should apply a loop filter across the left border of an 8x8 block
// boundary.
//
// In the case of TX_16X16-> ( in low order byte first we end up with
// a mask that looks like this
//
// 10101010
// 10101010
// 10101010
// 10101010
// 10101010
// 10101010
// 10101010
// 10101010
//
// A loopfilter should be applied to every other 8x8 horizontally.
static const uint64_t left_64x64_txform_mask[TX_SIZES]= {
0xffffffffffffffffULL, // TX_4X4
0xffffffffffffffffULL, // TX_8x8
0x5555555555555555ULL, // TX_16x16
0x1111111111111111ULL, // TX_32x32
};
// 64 bit masks for above transform size. Each 1 represents a position where
// we should apply a loop filter across the top border of an 8x8 block
// boundary.
//
// In the case of TX_32x32 -> ( in low order byte first we end up with
// a mask that looks like this
//
// 11111111
// 00000000
// 00000000
// 00000000
// 11111111
// 00000000
// 00000000
// 00000000
//
// A loopfilter should be applied to every other 4 the row vertically.
static const uint64_t above_64x64_txform_mask[TX_SIZES]= {
0xffffffffffffffffULL, // TX_4X4
0xffffffffffffffffULL, // TX_8x8
0x00ff00ff00ff00ffULL, // TX_16x16
0x000000ff000000ffULL, // TX_32x32
};
// 64 bit masks for prediction sizes (left). Each 1 represents a position
// where left border of an 8x8 block. These are aligned to the right most
// appropriate bit, and then shifted into place.
//
// In the case of TX_16x32 -> ( low order byte first ) we end up with
// a mask that looks like this :
//
// 10000000
// 10000000
// 10000000
// 10000000
// 00000000
// 00000000
// 00000000
// 00000000
static const uint64_t left_prediction_mask[BLOCK_SIZES] = {
0x0000000000000001ULL, // BLOCK_4X4,
0x0000000000000001ULL, // BLOCK_4X8,
0x0000000000000001ULL, // BLOCK_8X4,
0x0000000000000001ULL, // BLOCK_8X8,
0x0000000000000101ULL, // BLOCK_8X16,
0x0000000000000001ULL, // BLOCK_16X8,
0x0000000000000101ULL, // BLOCK_16X16,
0x0000000001010101ULL, // BLOCK_16X32,
0x0000000000000101ULL, // BLOCK_32X16,
0x0000000001010101ULL, // BLOCK_32X32,
0x0101010101010101ULL, // BLOCK_32X64,
0x0000000001010101ULL, // BLOCK_64X32,
0x0101010101010101ULL, // BLOCK_64X64
};
// 64 bit mask to shift and set for each prediction size.
static const uint64_t above_prediction_mask[BLOCK_SIZES] = {
0x0000000000000001ULL, // BLOCK_4X4
0x0000000000000001ULL, // BLOCK_4X8
0x0000000000000001ULL, // BLOCK_8X4
0x0000000000000001ULL, // BLOCK_8X8
0x0000000000000001ULL, // BLOCK_8X16,
0x0000000000000003ULL, // BLOCK_16X8
0x0000000000000003ULL, // BLOCK_16X16
0x0000000000000003ULL, // BLOCK_16X32,
0x000000000000000fULL, // BLOCK_32X16,
0x000000000000000fULL, // BLOCK_32X32,
0x000000000000000fULL, // BLOCK_32X64,
0x00000000000000ffULL, // BLOCK_64X32,
0x00000000000000ffULL, // BLOCK_64X64
};
// 64 bit mask to shift and set for each prediction size. A bit is set for
// each 8x8 block that would be in the left most block of the given block
// size in the 64x64 block.
static const uint64_t size_mask[BLOCK_SIZES] = {
0x0000000000000001ULL, // BLOCK_4X4
0x0000000000000001ULL, // BLOCK_4X8
0x0000000000000001ULL, // BLOCK_8X4
0x0000000000000001ULL, // BLOCK_8X8
0x0000000000000101ULL, // BLOCK_8X16,
0x0000000000000003ULL, // BLOCK_16X8
0x0000000000000303ULL, // BLOCK_16X16
0x0000000003030303ULL, // BLOCK_16X32,
0x0000000000000f0fULL, // BLOCK_32X16,
0x000000000f0f0f0fULL, // BLOCK_32X32,
0x0f0f0f0f0f0f0f0fULL, // BLOCK_32X64,
0x00000000ffffffffULL, // BLOCK_64X32,
0xffffffffffffffffULL, // BLOCK_64X64
};
// These are used for masking the left and above borders.
static const uint64_t left_border = 0x1111111111111111ULL;
static const uint64_t above_border = 0x000000ff000000ffULL;
// 16 bit masks for uv transform sizes.
static const uint16_t left_64x64_txform_mask_uv[TX_SIZES]= {
0xffff, // TX_4X4
0xffff, // TX_8x8
0x5555, // TX_16x16
0x1111, // TX_32x32
};
static const uint16_t above_64x64_txform_mask_uv[TX_SIZES]= {
0xffff, // TX_4X4
0xffff, // TX_8x8
0x0f0f, // TX_16x16
0x000f, // TX_32x32
};
// 16 bit left mask to shift and set for each uv prediction size.
static const uint16_t left_prediction_mask_uv[BLOCK_SIZES] = {
0x0001, // BLOCK_4X4,
0x0001, // BLOCK_4X8,
0x0001, // BLOCK_8X4,
0x0001, // BLOCK_8X8,
0x0001, // BLOCK_8X16,
0x0001, // BLOCK_16X8,
0x0001, // BLOCK_16X16,
0x0011, // BLOCK_16X32,
0x0001, // BLOCK_32X16,
0x0011, // BLOCK_32X32,
0x1111, // BLOCK_32X64
0x0011, // BLOCK_64X32,
0x1111, // BLOCK_64X64
};
// 16 bit above mask to shift and set for uv each prediction size.
static const uint16_t above_prediction_mask_uv[BLOCK_SIZES] = {
0x0001, // BLOCK_4X4
0x0001, // BLOCK_4X8
0x0001, // BLOCK_8X4
0x0001, // BLOCK_8X8
0x0001, // BLOCK_8X16,
0x0001, // BLOCK_16X8
0x0001, // BLOCK_16X16
0x0001, // BLOCK_16X32,
0x0003, // BLOCK_32X16,
0x0003, // BLOCK_32X32,
0x0003, // BLOCK_32X64,
0x000f, // BLOCK_64X32,
0x000f, // BLOCK_64X64
};
// 64 bit mask to shift and set for each uv prediction size
static const uint16_t size_mask_uv[BLOCK_SIZES] = {
0x0001, // BLOCK_4X4
0x0001, // BLOCK_4X8
0x0001, // BLOCK_8X4
0x0001, // BLOCK_8X8
0x0001, // BLOCK_8X16,
0x0001, // BLOCK_16X8
0x0001, // BLOCK_16X16
0x0011, // BLOCK_16X32,
0x0003, // BLOCK_32X16,
0x0033, // BLOCK_32X32,
0x3333, // BLOCK_32X64,
0x00ff, // BLOCK_64X32,
0xffff, // BLOCK_64X64
};
static const uint16_t left_border_uv = 0x1111;
static const uint16_t above_border_uv = 0x000f;
static const int mode_lf_lut[MB_MODE_COUNT] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // INTRA_MODES
1, 1, 0, 1 // INTER_MODES (ZEROMV == 0)
};
static void update_sharpness(loop_filter_info_n *lfi, int sharpness_lvl) {
int lvl;
// For each possible value for the loop filter fill out limits
for (lvl = 0; lvl <= MAX_LOOP_FILTER; lvl++) {
// Set loop filter parameters that control sharpness.
int block_inside_limit = lvl >> ((sharpness_lvl > 0) + (sharpness_lvl > 4));
if (sharpness_lvl > 0) {
if (block_inside_limit > (9 - sharpness_lvl))
block_inside_limit = (9 - sharpness_lvl);
}
if (block_inside_limit < 1)
block_inside_limit = 1;
memset(lfi->lfthr[lvl].lim, block_inside_limit, SIMD_WIDTH);
memset(lfi->lfthr[lvl].mblim, (2 * (lvl + 2) + block_inside_limit),
SIMD_WIDTH);
}
}
static uint8_t get_filter_level(const loop_filter_info_n *lfi_n,
const MB_MODE_INFO *mbmi) {
return lfi_n->lvl[mbmi->segment_id][mbmi->ref_frame[0]]
[mode_lf_lut[mbmi->mode]];
}
void vp10_loop_filter_init(VP10_COMMON *cm) {
loop_filter_info_n *lfi = &cm->lf_info;
struct loopfilter *lf = &cm->lf;
int lvl;
// init limits for given sharpness
update_sharpness(lfi, lf->sharpness_level);
lf->last_sharpness_level = lf->sharpness_level;
// init hev threshold const vectors
for (lvl = 0; lvl <= MAX_LOOP_FILTER; lvl++)
memset(lfi->lfthr[lvl].hev_thr, (lvl >> 4), SIMD_WIDTH);
}
void vp10_loop_filter_frame_init(VP10_COMMON *cm, int default_filt_lvl) {
int seg_id;
// n_shift is the multiplier for lf_deltas
// the multiplier is 1 for when filter_lvl is between 0 and 31;
// 2 when filter_lvl is between 32 and 63
const int scale = 1 << (default_filt_lvl >> 5);
loop_filter_info_n *const lfi = &cm->lf_info;
struct loopfilter *const lf = &cm->lf;
const struct segmentation *const seg = &cm->seg;
// update limits if sharpness has changed
if (lf->last_sharpness_level != lf->sharpness_level) {
update_sharpness(lfi, lf->sharpness_level);
lf->last_sharpness_level = lf->sharpness_level;
}
for (seg_id = 0; seg_id < MAX_SEGMENTS; seg_id++) {
int lvl_seg = default_filt_lvl;
if (segfeature_active(seg, seg_id, SEG_LVL_ALT_LF)) {
const int data = get_segdata(seg, seg_id, SEG_LVL_ALT_LF);
lvl_seg = clamp(seg->abs_delta == SEGMENT_ABSDATA ?
data : default_filt_lvl + data,
0, MAX_LOOP_FILTER);
}
if (!lf->mode_ref_delta_enabled) {
// we could get rid of this if we assume that deltas are set to
// zero when not in use; encoder always uses deltas
memset(lfi->lvl[seg_id], lvl_seg, sizeof(lfi->lvl[seg_id]));
} else {
int ref, mode;
const int intra_lvl = lvl_seg + lf->ref_deltas[INTRA_FRAME] * scale;
lfi->lvl[seg_id][INTRA_FRAME][0] = clamp(intra_lvl, 0, MAX_LOOP_FILTER);
for (ref = LAST_FRAME; ref < MAX_REF_FRAMES; ++ref) {
for (mode = 0; mode < MAX_MODE_LF_DELTAS; ++mode) {
const int inter_lvl = lvl_seg + lf->ref_deltas[ref] * scale
+ lf->mode_deltas[mode] * scale;
lfi->lvl[seg_id][ref][mode] = clamp(inter_lvl, 0, MAX_LOOP_FILTER);
}
}
}
}
}
static void filter_selectively_vert_row2(int subsampling_factor,
uint8_t *s, int pitch,
unsigned int mask_16x16_l,
unsigned int mask_8x8_l,
unsigned int mask_4x4_l,
unsigned int mask_4x4_int_l,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl) {
const int mask_shift = subsampling_factor ? 4 : 8;
const int mask_cutoff = subsampling_factor ? 0xf : 0xff;
const int lfl_forward = subsampling_factor ? 4 : 8;
unsigned int mask_16x16_0 = mask_16x16_l & mask_cutoff;
unsigned int mask_8x8_0 = mask_8x8_l & mask_cutoff;
unsigned int mask_4x4_0 = mask_4x4_l & mask_cutoff;
unsigned int mask_4x4_int_0 = mask_4x4_int_l & mask_cutoff;
unsigned int mask_16x16_1 = (mask_16x16_l >> mask_shift) & mask_cutoff;
unsigned int mask_8x8_1 = (mask_8x8_l >> mask_shift) & mask_cutoff;
unsigned int mask_4x4_1 = (mask_4x4_l >> mask_shift) & mask_cutoff;
unsigned int mask_4x4_int_1 = (mask_4x4_int_l >> mask_shift) & mask_cutoff;
unsigned int mask;
for (mask = mask_16x16_0 | mask_8x8_0 | mask_4x4_0 | mask_4x4_int_0 |
mask_16x16_1 | mask_8x8_1 | mask_4x4_1 | mask_4x4_int_1;
mask; mask >>= 1) {
const loop_filter_thresh *lfi0 = lfi_n->lfthr + *lfl;
const loop_filter_thresh *lfi1 = lfi_n->lfthr + *(lfl + lfl_forward);
// TODO(yunqingwang): count in loopfilter functions should be removed.
if (mask & 1) {
if ((mask_16x16_0 | mask_16x16_1) & 1) {
if ((mask_16x16_0 & mask_16x16_1) & 1) {
vpx_lpf_vertical_16_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr);
} else if (mask_16x16_0 & 1) {
vpx_lpf_vertical_16(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr);
} else {
vpx_lpf_vertical_16(s + 8 *pitch, pitch, lfi1->mblim,
lfi1->lim, lfi1->hev_thr);
}
}
if ((mask_8x8_0 | mask_8x8_1) & 1) {
if ((mask_8x8_0 & mask_8x8_1) & 1) {
vpx_lpf_vertical_8_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr);
} else if (mask_8x8_0 & 1) {
vpx_lpf_vertical_8(s, pitch, lfi0->mblim, lfi0->lim, lfi0->hev_thr,
1);
} else {
vpx_lpf_vertical_8(s + 8 * pitch, pitch, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, 1);
}
}
if ((mask_4x4_0 | mask_4x4_1) & 1) {
if ((mask_4x4_0 & mask_4x4_1) & 1) {
vpx_lpf_vertical_4_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr);
} else if (mask_4x4_0 & 1) {
vpx_lpf_vertical_4(s, pitch, lfi0->mblim, lfi0->lim, lfi0->hev_thr,
1);
} else {
vpx_lpf_vertical_4(s + 8 * pitch, pitch, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, 1);
}
}
if ((mask_4x4_int_0 | mask_4x4_int_1) & 1) {
if ((mask_4x4_int_0 & mask_4x4_int_1) & 1) {
vpx_lpf_vertical_4_dual(s + 4, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr);
} else if (mask_4x4_int_0 & 1) {
vpx_lpf_vertical_4(s + 4, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, 1);
} else {
vpx_lpf_vertical_4(s + 8 * pitch + 4, pitch, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, 1);
}
}
}
s += 8;
lfl += 1;
mask_16x16_0 >>= 1;
mask_8x8_0 >>= 1;
mask_4x4_0 >>= 1;
mask_4x4_int_0 >>= 1;
mask_16x16_1 >>= 1;
mask_8x8_1 >>= 1;
mask_4x4_1 >>= 1;
mask_4x4_int_1 >>= 1;
}
}
#if CONFIG_VP9_HIGHBITDEPTH
static void highbd_filter_selectively_vert_row2(int subsampling_factor,
uint16_t *s, int pitch,
unsigned int mask_16x16_l,
unsigned int mask_8x8_l,
unsigned int mask_4x4_l,
unsigned int mask_4x4_int_l,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl, int bd) {
const int mask_shift = subsampling_factor ? 4 : 8;
const int mask_cutoff = subsampling_factor ? 0xf : 0xff;
const int lfl_forward = subsampling_factor ? 4 : 8;
unsigned int mask_16x16_0 = mask_16x16_l & mask_cutoff;
unsigned int mask_8x8_0 = mask_8x8_l & mask_cutoff;
unsigned int mask_4x4_0 = mask_4x4_l & mask_cutoff;
unsigned int mask_4x4_int_0 = mask_4x4_int_l & mask_cutoff;
unsigned int mask_16x16_1 = (mask_16x16_l >> mask_shift) & mask_cutoff;
unsigned int mask_8x8_1 = (mask_8x8_l >> mask_shift) & mask_cutoff;
unsigned int mask_4x4_1 = (mask_4x4_l >> mask_shift) & mask_cutoff;
unsigned int mask_4x4_int_1 = (mask_4x4_int_l >> mask_shift) & mask_cutoff;
unsigned int mask;
for (mask = mask_16x16_0 | mask_8x8_0 | mask_4x4_0 | mask_4x4_int_0 |
mask_16x16_1 | mask_8x8_1 | mask_4x4_1 | mask_4x4_int_1;
mask; mask >>= 1) {
const loop_filter_thresh *lfi0 = lfi_n->lfthr + *lfl;
const loop_filter_thresh *lfi1 = lfi_n->lfthr + *(lfl + lfl_forward);
// TODO(yunqingwang): count in loopfilter functions should be removed.
if (mask & 1) {
if ((mask_16x16_0 | mask_16x16_1) & 1) {
if ((mask_16x16_0 & mask_16x16_1) & 1) {
vpx_highbd_lpf_vertical_16_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, bd);
} else if (mask_16x16_0 & 1) {
vpx_highbd_lpf_vertical_16(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, bd);
} else {
vpx_highbd_lpf_vertical_16(s + 8 *pitch, pitch, lfi1->mblim,
lfi1->lim, lfi1->hev_thr, bd);
}
}
if ((mask_8x8_0 | mask_8x8_1) & 1) {
if ((mask_8x8_0 & mask_8x8_1) & 1) {
vpx_highbd_lpf_vertical_8_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, bd);
} else if (mask_8x8_0 & 1) {
vpx_highbd_lpf_vertical_8(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, 1, bd);
} else {
vpx_highbd_lpf_vertical_8(s + 8 * pitch, pitch, lfi1->mblim,
lfi1->lim, lfi1->hev_thr, 1, bd);
}
}
if ((mask_4x4_0 | mask_4x4_1) & 1) {
if ((mask_4x4_0 & mask_4x4_1) & 1) {
vpx_highbd_lpf_vertical_4_dual(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, bd);
} else if (mask_4x4_0 & 1) {
vpx_highbd_lpf_vertical_4(s, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, 1, bd);
} else {
vpx_highbd_lpf_vertical_4(s + 8 * pitch, pitch, lfi1->mblim,
lfi1->lim, lfi1->hev_thr, 1, bd);
}
}
if ((mask_4x4_int_0 | mask_4x4_int_1) & 1) {
if ((mask_4x4_int_0 & mask_4x4_int_1) & 1) {
vpx_highbd_lpf_vertical_4_dual(s + 4, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, lfi1->mblim, lfi1->lim,
lfi1->hev_thr, bd);
} else if (mask_4x4_int_0 & 1) {
vpx_highbd_lpf_vertical_4(s + 4, pitch, lfi0->mblim, lfi0->lim,
lfi0->hev_thr, 1, bd);
} else {
vpx_highbd_lpf_vertical_4(s + 8 * pitch + 4, pitch, lfi1->mblim,
lfi1->lim, lfi1->hev_thr, 1, bd);
}
}
}
s += 8;
lfl += 1;
mask_16x16_0 >>= 1;
mask_8x8_0 >>= 1;
mask_4x4_0 >>= 1;
mask_4x4_int_0 >>= 1;
mask_16x16_1 >>= 1;
mask_8x8_1 >>= 1;
mask_4x4_1 >>= 1;
mask_4x4_int_1 >>= 1;
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
static void filter_selectively_horiz(uint8_t *s, int pitch,
unsigned int mask_16x16,
unsigned int mask_8x8,
unsigned int mask_4x4,
unsigned int mask_4x4_int,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl) {
unsigned int mask;
int count;
for (mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int;
mask; mask >>= count) {
const loop_filter_thresh *lfi = lfi_n->lfthr + *lfl;
count = 1;
if (mask & 1) {
if (mask_16x16 & 1) {
if ((mask_16x16 & 3) == 3) {
vpx_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 2);
count = 2;
} else {
vpx_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
}
} else if (mask_8x8 & 1) {
if ((mask_8x8 & 3) == 3) {
// Next block's thresholds.
const loop_filter_thresh *lfin = lfi_n->lfthr + *(lfl + 1);
vpx_lpf_horizontal_8_dual(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, lfin->mblim, lfin->lim,
lfin->hev_thr);
if ((mask_4x4_int & 3) == 3) {
vpx_lpf_horizontal_4_dual(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, lfin->mblim,
lfin->lim, lfin->hev_thr);
} else {
if (mask_4x4_int & 1)
vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
else if (mask_4x4_int & 2)
vpx_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim,
lfin->lim, lfin->hev_thr, 1);
}
count = 2;
} else {
vpx_lpf_horizontal_8(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, 1);
if (mask_4x4_int & 1)
vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
}
} else if (mask_4x4 & 1) {
if ((mask_4x4 & 3) == 3) {
// Next block's thresholds.
const loop_filter_thresh *lfin = lfi_n->lfthr + *(lfl + 1);
vpx_lpf_horizontal_4_dual(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, lfin->mblim, lfin->lim,
lfin->hev_thr);
if ((mask_4x4_int & 3) == 3) {
vpx_lpf_horizontal_4_dual(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, lfin->mblim,
lfin->lim, lfin->hev_thr);
} else {
if (mask_4x4_int & 1)
vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
else if (mask_4x4_int & 2)
vpx_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim,
lfin->lim, lfin->hev_thr, 1);
}
count = 2;
} else {
vpx_lpf_horizontal_4(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, 1);
if (mask_4x4_int & 1)
vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
}
} else if (mask_4x4_int & 1) {
vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1);
}
}
s += 8 * count;
lfl += count;
mask_16x16 >>= count;
mask_8x8 >>= count;
mask_4x4 >>= count;
mask_4x4_int >>= count;
}
}
#if CONFIG_VP9_HIGHBITDEPTH
static void highbd_filter_selectively_horiz(uint16_t *s, int pitch,
unsigned int mask_16x16,
unsigned int mask_8x8,
unsigned int mask_4x4,
unsigned int mask_4x4_int,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl, int bd) {
unsigned int mask;
int count;
for (mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int;
mask; mask >>= count) {
const loop_filter_thresh *lfi = lfi_n->lfthr + *lfl;
count = 1;
if (mask & 1) {
if (mask_16x16 & 1) {
if ((mask_16x16 & 3) == 3) {
vpx_highbd_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 2, bd);
count = 2;
} else {
vpx_highbd_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
}
} else if (mask_8x8 & 1) {
if ((mask_8x8 & 3) == 3) {
// Next block's thresholds.
const loop_filter_thresh *lfin = lfi_n->lfthr + *(lfl + 1);
vpx_highbd_lpf_horizontal_8_dual(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, lfin->mblim, lfin->lim,
lfin->hev_thr, bd);
if ((mask_4x4_int & 3) == 3) {
vpx_highbd_lpf_horizontal_4_dual(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr,
lfin->mblim, lfin->lim,
lfin->hev_thr, bd);
} else {
if (mask_4x4_int & 1) {
vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, 1, bd);
} else if (mask_4x4_int & 2) {
vpx_highbd_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim,
lfin->lim, lfin->hev_thr, 1, bd);
}
}
count = 2;
} else {
vpx_highbd_lpf_horizontal_8(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
if (mask_4x4_int & 1) {
vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, 1, bd);
}
}
} else if (mask_4x4 & 1) {
if ((mask_4x4 & 3) == 3) {
// Next block's thresholds.
const loop_filter_thresh *lfin = lfi_n->lfthr + *(lfl + 1);
vpx_highbd_lpf_horizontal_4_dual(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, lfin->mblim, lfin->lim,
lfin->hev_thr, bd);
if ((mask_4x4_int & 3) == 3) {
vpx_highbd_lpf_horizontal_4_dual(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr,
lfin->mblim, lfin->lim,
lfin->hev_thr, bd);
} else {
if (mask_4x4_int & 1) {
vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, 1, bd);
} else if (mask_4x4_int & 2) {
vpx_highbd_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim,
lfin->lim, lfin->hev_thr, 1, bd);
}
}
count = 2;
} else {
vpx_highbd_lpf_horizontal_4(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
if (mask_4x4_int & 1) {
vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim,
lfi->lim, lfi->hev_thr, 1, bd);
}
}
} else if (mask_4x4_int & 1) {
vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
}
}
s += 8 * count;
lfl += count;
mask_16x16 >>= count;
mask_8x8 >>= count;
mask_4x4 >>= count;
mask_4x4_int >>= count;
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
// This function ors into the current lfm structure, where to do loop
// filters for the specific mi we are looking at. It uses information
// including the block_size_type (32x16, 32x32, etc.), the transform size,
// whether there were any coefficients encoded, and the loop filter strength
// block we are currently looking at. Shift is used to position the
// 1's we produce.
// TODO(JBB) Need another function for different resolution color..
static void build_masks(const loop_filter_info_n *const lfi_n,
const MODE_INFO *mi, const int shift_y,
const int shift_uv,
LOOP_FILTER_MASK *lfm) {
const MB_MODE_INFO *mbmi = &mi->mbmi;
const BLOCK_SIZE block_size = mbmi->sb_type;
const TX_SIZE tx_size_y = mbmi->tx_size;
const TX_SIZE tx_size_uv = get_uv_tx_size_impl(tx_size_y, block_size, 1, 1);
const int filter_level = get_filter_level(lfi_n, mbmi);
uint64_t *const left_y = &lfm->left_y[tx_size_y];
uint64_t *const above_y = &lfm->above_y[tx_size_y];
uint64_t *const int_4x4_y = &lfm->int_4x4_y;
uint16_t *const left_uv = &lfm->left_uv[tx_size_uv];
uint16_t *const above_uv = &lfm->above_uv[tx_size_uv];
uint16_t *const int_4x4_uv = &lfm->int_4x4_uv;
int i;
// If filter level is 0 we don't loop filter.
if (!filter_level) {
return;
} else {
const int w = num_8x8_blocks_wide_lookup[block_size];
const int h = num_8x8_blocks_high_lookup[block_size];
int index = shift_y;
for (i = 0; i < h; i++) {
memset(&lfm->lfl_y[index], filter_level, w);
index += 8;
}
}
// These set 1 in the current block size for the block size edges.
// For instance if the block size is 32x16, we'll set:
// above = 1111
// 0000
// and
// left = 1000
// = 1000
// NOTE : In this example the low bit is left most ( 1000 ) is stored as
// 1, not 8...
//
// U and V set things on a 16 bit scale.
//
*above_y |= above_prediction_mask[block_size] << shift_y;
*above_uv |= above_prediction_mask_uv[block_size] << shift_uv;
*left_y |= left_prediction_mask[block_size] << shift_y;
*left_uv |= left_prediction_mask_uv[block_size] << shift_uv;
// If the block has no coefficients and is not intra we skip applying
// the loop filter on block edges.
#if CONFIG_MISC_FIXES
if ((mbmi->skip || mbmi->has_no_coeffs) && is_inter_block(mbmi))
return;
#else
if (mbmi->skip && is_inter_block(mbmi))
return;
#endif
// Here we are adding a mask for the transform size. The transform
// size mask is set to be correct for a 64x64 prediction block size. We
// mask to match the size of the block we are working on and then shift it
// into place..
*above_y |= (size_mask[block_size] &
above_64x64_txform_mask[tx_size_y]) << shift_y;
*above_uv |= (size_mask_uv[block_size] &
above_64x64_txform_mask_uv[tx_size_uv]) << shift_uv;
*left_y |= (size_mask[block_size] &
left_64x64_txform_mask[tx_size_y]) << shift_y;
*left_uv |= (size_mask_uv[block_size] &
left_64x64_txform_mask_uv[tx_size_uv]) << shift_uv;
// Here we are trying to determine what to do with the internal 4x4 block
// boundaries. These differ from the 4x4 boundaries on the outside edge of
// an 8x8 in that the internal ones can be skipped and don't depend on
// the prediction block size.
if (tx_size_y == TX_4X4)
*int_4x4_y |= (size_mask[block_size] & 0xffffffffffffffffULL) << shift_y;
if (tx_size_uv == TX_4X4)
*int_4x4_uv |= (size_mask_uv[block_size] & 0xffff) << shift_uv;
}
// This function does the same thing as the one above with the exception that
// it only affects the y masks. It exists because for blocks < 16x16 in size,
// we only update u and v masks on the first block.
static void build_y_mask(const loop_filter_info_n *const lfi_n,
const MODE_INFO *mi, const int shift_y,
LOOP_FILTER_MASK *lfm) {
const MB_MODE_INFO *mbmi = &mi->mbmi;
const BLOCK_SIZE block_size = mbmi->sb_type;
const TX_SIZE tx_size_y = mbmi->tx_size;
const int filter_level = get_filter_level(lfi_n, mbmi);
uint64_t *const left_y = &lfm->left_y[tx_size_y];
uint64_t *const above_y = &lfm->above_y[tx_size_y];
uint64_t *const int_4x4_y = &lfm->int_4x4_y;
int i;
if (!filter_level) {
return;
} else {
const int w = num_8x8_blocks_wide_lookup[block_size];
const int h = num_8x8_blocks_high_lookup[block_size];
int index = shift_y;
for (i = 0; i < h; i++) {
memset(&lfm->lfl_y[index], filter_level, w);
index += 8;
}
}
*above_y |= above_prediction_mask[block_size] << shift_y;
*left_y |= left_prediction_mask[block_size] << shift_y;
#if CONFIG_MISC_FIXES
if ((mbmi->skip || mbmi->has_no_coeffs) && is_inter_block(mbmi))
return;
#else
if (mbmi->skip && is_inter_block(mbmi))
return;
#endif
*above_y |= (size_mask[block_size] &
above_64x64_txform_mask[tx_size_y]) << shift_y;
*left_y |= (size_mask[block_size] &
left_64x64_txform_mask[tx_size_y]) << shift_y;
if (tx_size_y == TX_4X4)
*int_4x4_y |= (size_mask[block_size] & 0xffffffffffffffffULL) << shift_y;
}
// This function sets up the bit masks for the entire 64x64 region represented
// by mi_row, mi_col.
// TODO(JBB): This function only works for yv12.
void vp10_setup_mask(VP10_COMMON *const cm, const int mi_row, const int mi_col,
MODE_INFO **mi, const int mode_info_stride,
LOOP_FILTER_MASK *lfm) {
int idx_32, idx_16, idx_8;
const loop_filter_info_n *const lfi_n = &cm->lf_info;
MODE_INFO **mip = mi;
MODE_INFO **mip2 = mi;
// These are offsets to the next mi in the 64x64 block. It is what gets
// added to the mi ptr as we go through each loop. It helps us to avoid
// setting up special row and column counters for each index. The last step
// brings us out back to the starting position.
const int offset_32[] = {4, (mode_info_stride << 2) - 4, 4,
-(mode_info_stride << 2) - 4};
const int offset_16[] = {2, (mode_info_stride << 1) - 2, 2,
-(mode_info_stride << 1) - 2};
const int offset[] = {1, mode_info_stride - 1, 1, -mode_info_stride - 1};
// Following variables represent shifts to position the current block
// mask over the appropriate block. A shift of 36 to the left will move
// the bits for the final 32 by 32 block in the 64x64 up 4 rows and left
// 4 rows to the appropriate spot.
const int shift_32_y[] = {0, 4, 32, 36};
const int shift_16_y[] = {0, 2, 16, 18};
const int shift_8_y[] = {0, 1, 8, 9};
const int shift_32_uv[] = {0, 2, 8, 10};
const int shift_16_uv[] = {0, 1, 4, 5};
int i;
const int max_rows = (mi_row + MI_BLOCK_SIZE > cm->mi_rows ?
cm->mi_rows - mi_row : MI_BLOCK_SIZE);
const int max_cols = (mi_col + MI_BLOCK_SIZE > cm->mi_cols ?
cm->mi_cols - mi_col : MI_BLOCK_SIZE);
vp10_zero(*lfm);
assert(mip[0] != NULL);
// TODO(jimbankoski): Try moving most of the following code into decode
// loop and storing lfm in the mbmi structure so that we don't have to go
// through the recursive loop structure multiple times.
switch (mip[0]->mbmi.sb_type) {
case BLOCK_64X64:
build_masks(lfi_n, mip[0] , 0, 0, lfm);
break;
case BLOCK_64X32:
build_masks(lfi_n, mip[0], 0, 0, lfm);
mip2 = mip + mode_info_stride * 4;
if (4 >= max_rows)
break;
build_masks(lfi_n, mip2[0], 32, 8, lfm);
break;
case BLOCK_32X64:
build_masks(lfi_n, mip[0], 0, 0, lfm);
mip2 = mip + 4;
if (4 >= max_cols)
break;
build_masks(lfi_n, mip2[0], 4, 2, lfm);
break;
default:
for (idx_32 = 0; idx_32 < 4; mip += offset_32[idx_32], ++idx_32) {
const int shift_y = shift_32_y[idx_32];
const int shift_uv = shift_32_uv[idx_32];
const int mi_32_col_offset = ((idx_32 & 1) << 2);
const int mi_32_row_offset = ((idx_32 >> 1) << 2);
if (mi_32_col_offset >= max_cols || mi_32_row_offset >= max_rows)
continue;
switch (mip[0]->mbmi.sb_type) {
case BLOCK_32X32:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
break;
case BLOCK_32X16:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
if (mi_32_row_offset + 2 >= max_rows)
continue;
mip2 = mip + mode_info_stride * 2;
build_masks(lfi_n, mip2[0], shift_y + 16, shift_uv + 4, lfm);
break;
case BLOCK_16X32:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
if (mi_32_col_offset + 2 >= max_cols)
continue;
mip2 = mip + 2;
build_masks(lfi_n, mip2[0], shift_y + 2, shift_uv + 1, lfm);
break;
default:
for (idx_16 = 0; idx_16 < 4; mip += offset_16[idx_16], ++idx_16) {
const int shift_y = shift_32_y[idx_32] + shift_16_y[idx_16];
const int shift_uv = shift_32_uv[idx_32] + shift_16_uv[idx_16];
const int mi_16_col_offset = mi_32_col_offset +
((idx_16 & 1) << 1);
const int mi_16_row_offset = mi_32_row_offset +
((idx_16 >> 1) << 1);
if (mi_16_col_offset >= max_cols || mi_16_row_offset >= max_rows)
continue;
switch (mip[0]->mbmi.sb_type) {
case BLOCK_16X16:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
break;
case BLOCK_16X8:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
if (mi_16_row_offset + 1 >= max_rows)
continue;
mip2 = mip + mode_info_stride;
build_y_mask(lfi_n, mip2[0], shift_y+8, lfm);
break;
case BLOCK_8X16:
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
if (mi_16_col_offset +1 >= max_cols)
continue;
mip2 = mip + 1;
build_y_mask(lfi_n, mip2[0], shift_y+1, lfm);
break;
default: {
const int shift_y = shift_32_y[idx_32] +
shift_16_y[idx_16] +
shift_8_y[0];
build_masks(lfi_n, mip[0], shift_y, shift_uv, lfm);
mip += offset[0];
for (idx_8 = 1; idx_8 < 4; mip += offset[idx_8], ++idx_8) {
const int shift_y = shift_32_y[idx_32] +
shift_16_y[idx_16] +
shift_8_y[idx_8];
const int mi_8_col_offset = mi_16_col_offset +
((idx_8 & 1));
const int mi_8_row_offset = mi_16_row_offset +
((idx_8 >> 1));
if (mi_8_col_offset >= max_cols ||
mi_8_row_offset >= max_rows)
continue;
build_y_mask(lfi_n, mip[0], shift_y, lfm);
}
break;
}
}
}
break;
}
}
break;
}
// The largest loopfilter we have is 16x16 so we use the 16x16 mask
// for 32x32 transforms also.
lfm->left_y[TX_16X16] |= lfm->left_y[TX_32X32];
lfm->above_y[TX_16X16] |= lfm->above_y[TX_32X32];
lfm->left_uv[TX_16X16] |= lfm->left_uv[TX_32X32];
lfm->above_uv[TX_16X16] |= lfm->above_uv[TX_32X32];
// We do at least 8 tap filter on every 32x32 even if the transform size
// is 4x4. So if the 4x4 is set on a border pixel add it to the 8x8 and
// remove it from the 4x4.
lfm->left_y[TX_8X8] |= lfm->left_y[TX_4X4] & left_border;
lfm->left_y[TX_4X4] &= ~left_border;
lfm->above_y[TX_8X8] |= lfm->above_y[TX_4X4] & above_border;
lfm->above_y[TX_4X4] &= ~above_border;
lfm->left_uv[TX_8X8] |= lfm->left_uv[TX_4X4] & left_border_uv;
lfm->left_uv[TX_4X4] &= ~left_border_uv;
lfm->above_uv[TX_8X8] |= lfm->above_uv[TX_4X4] & above_border_uv;
lfm->above_uv[TX_4X4] &= ~above_border_uv;
// We do some special edge handling.
if (mi_row + MI_BLOCK_SIZE > cm->mi_rows) {
const uint64_t rows = cm->mi_rows - mi_row;
// Each pixel inside the border gets a 1,
const uint64_t mask_y = (((uint64_t) 1 << (rows << 3)) - 1);
const uint16_t mask_uv = (((uint16_t) 1 << (((rows + 1) >> 1) << 2)) - 1);
// Remove values completely outside our border.
for (i = 0; i < TX_32X32; i++) {
lfm->left_y[i] &= mask_y;
lfm->above_y[i] &= mask_y;
lfm->left_uv[i] &= mask_uv;
lfm->above_uv[i] &= mask_uv;
}
lfm->int_4x4_y &= mask_y;
lfm->int_4x4_uv &= mask_uv;
// We don't apply a wide loop filter on the last uv block row. If set
// apply the shorter one instead.
if (rows == 1) {
lfm->above_uv[TX_8X8] |= lfm->above_uv[TX_16X16];
lfm->above_uv[TX_16X16] = 0;
}
if (rows == 5) {
lfm->above_uv[TX_8X8] |= lfm->above_uv[TX_16X16] & 0xff00;
lfm->above_uv[TX_16X16] &= ~(lfm->above_uv[TX_16X16] & 0xff00);
}
}
if (mi_col + MI_BLOCK_SIZE > cm->mi_cols) {
const uint64_t columns = cm->mi_cols - mi_col;
// Each pixel inside the border gets a 1, the multiply copies the border
// to where we need it.
const uint64_t mask_y = (((1 << columns) - 1)) * 0x0101010101010101ULL;
const uint16_t mask_uv = ((1 << ((columns + 1) >> 1)) - 1) * 0x1111;
// Internal edges are not applied on the last column of the image so
// we mask 1 more for the internal edges
const uint16_t mask_uv_int = ((1 << (columns >> 1)) - 1) * 0x1111;
// Remove the bits outside the image edge.
for (i = 0; i < TX_32X32; i++) {
lfm->left_y[i] &= mask_y;
lfm->above_y[i] &= mask_y;
lfm->left_uv[i] &= mask_uv;
lfm->above_uv[i] &= mask_uv;
}
lfm->int_4x4_y &= mask_y;
lfm->int_4x4_uv &= mask_uv_int;
// We don't apply a wide loop filter on the last uv column. If set
// apply the shorter one instead.
if (columns == 1) {
lfm->left_uv[TX_8X8] |= lfm->left_uv[TX_16X16];
lfm->left_uv[TX_16X16] = 0;
}
if (columns == 5) {
lfm->left_uv[TX_8X8] |= (lfm->left_uv[TX_16X16] & 0xcccc);
lfm->left_uv[TX_16X16] &= ~(lfm->left_uv[TX_16X16] & 0xcccc);
}
}
// We don't apply a loop filter on the first column in the image, mask that
// out.
if (mi_col == 0) {
for (i = 0; i < TX_32X32; i++) {
lfm->left_y[i] &= 0xfefefefefefefefeULL;
lfm->left_uv[i] &= 0xeeee;
}
}
// Assert if we try to apply 2 different loop filters at the same position.
assert(!(lfm->left_y[TX_16X16] & lfm->left_y[TX_8X8]));
assert(!(lfm->left_y[TX_16X16] & lfm->left_y[TX_4X4]));
assert(!(lfm->left_y[TX_8X8] & lfm->left_y[TX_4X4]));
assert(!(lfm->int_4x4_y & lfm->left_y[TX_16X16]));
assert(!(lfm->left_uv[TX_16X16]&lfm->left_uv[TX_8X8]));
assert(!(lfm->left_uv[TX_16X16] & lfm->left_uv[TX_4X4]));
assert(!(lfm->left_uv[TX_8X8] & lfm->left_uv[TX_4X4]));
assert(!(lfm->int_4x4_uv & lfm->left_uv[TX_16X16]));
assert(!(lfm->above_y[TX_16X16] & lfm->above_y[TX_8X8]));
assert(!(lfm->above_y[TX_16X16] & lfm->above_y[TX_4X4]));
assert(!(lfm->above_y[TX_8X8] & lfm->above_y[TX_4X4]));
assert(!(lfm->int_4x4_y & lfm->above_y[TX_16X16]));
assert(!(lfm->above_uv[TX_16X16] & lfm->above_uv[TX_8X8]));
assert(!(lfm->above_uv[TX_16X16] & lfm->above_uv[TX_4X4]));
assert(!(lfm->above_uv[TX_8X8] & lfm->above_uv[TX_4X4]));
assert(!(lfm->int_4x4_uv & lfm->above_uv[TX_16X16]));
}
static void filter_selectively_vert(uint8_t *s, int pitch,
unsigned int mask_16x16,
unsigned int mask_8x8,
unsigned int mask_4x4,
unsigned int mask_4x4_int,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl) {
unsigned int mask;
for (mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int;
mask; mask >>= 1) {
const loop_filter_thresh *lfi = lfi_n->lfthr + *lfl;
if (mask & 1) {
if (mask_16x16 & 1) {
vpx_lpf_vertical_16(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr);
} else if (mask_8x8 & 1) {
vpx_lpf_vertical_8(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, 1);
} else if (mask_4x4 & 1) {
vpx_lpf_vertical_4(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, 1);
}
}
if (mask_4x4_int & 1)
vpx_lpf_vertical_4(s + 4, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, 1);
s += 8;
lfl += 1;
mask_16x16 >>= 1;
mask_8x8 >>= 1;
mask_4x4 >>= 1;
mask_4x4_int >>= 1;
}
}
#if CONFIG_VP9_HIGHBITDEPTH
static void highbd_filter_selectively_vert(uint16_t *s, int pitch,
unsigned int mask_16x16,
unsigned int mask_8x8,
unsigned int mask_4x4,
unsigned int mask_4x4_int,
const loop_filter_info_n *lfi_n,
const uint8_t *lfl, int bd) {
unsigned int mask;
for (mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int;
mask; mask >>= 1) {
const loop_filter_thresh *lfi = lfi_n->lfthr + *lfl;
if (mask & 1) {
if (mask_16x16 & 1) {
vpx_highbd_lpf_vertical_16(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, bd);
} else if (mask_8x8 & 1) {
vpx_highbd_lpf_vertical_8(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
} else if (mask_4x4 & 1) {
vpx_highbd_lpf_vertical_4(s, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
}
}
if (mask_4x4_int & 1)
vpx_highbd_lpf_vertical_4(s + 4, pitch, lfi->mblim, lfi->lim,
lfi->hev_thr, 1, bd);
s += 8;
lfl += 1;
mask_16x16 >>= 1;
mask_8x8 >>= 1;
mask_4x4 >>= 1;
mask_4x4_int >>= 1;
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
void vp10_filter_block_plane_non420(VP10_COMMON *cm,
struct macroblockd_plane *plane,
MODE_INFO **mi_8x8,
int mi_row, int mi_col) {
const int ss_x = plane->subsampling_x;
const int ss_y = plane->subsampling_y;
const int row_step = 1 << ss_y;
const int col_step = 1 << ss_x;
const int row_step_stride = cm->mi_stride * row_step;
struct buf_2d *const dst = &plane->dst;
uint8_t* const dst0 = dst->buf;
unsigned int mask_16x16[MI_BLOCK_SIZE] = {0};
unsigned int mask_8x8[MI_BLOCK_SIZE] = {0};
unsigned int mask_4x4[MI_BLOCK_SIZE] = {0};
unsigned int mask_4x4_int[MI_BLOCK_SIZE] = {0};
uint8_t lfl[MI_BLOCK_SIZE * MI_BLOCK_SIZE];
int r, c;
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += row_step) {
unsigned int mask_16x16_c = 0;
unsigned int mask_8x8_c = 0;
unsigned int mask_4x4_c = 0;
unsigned int border_mask;
// Determine the vertical edges that need filtering
for (c = 0; c < MI_BLOCK_SIZE && mi_col + c < cm->mi_cols; c += col_step) {
const MODE_INFO *mi = mi_8x8[c];
const BLOCK_SIZE sb_type = mi[0].mbmi.sb_type;
const int skip_this = mi[0].mbmi.skip && is_inter_block(&mi[0].mbmi);
// left edge of current unit is block/partition edge -> no skip
const int block_edge_left = (num_4x4_blocks_wide_lookup[sb_type] > 1) ?
!(c & (num_8x8_blocks_wide_lookup[sb_type] - 1)) : 1;
const int skip_this_c = skip_this && !block_edge_left;
// top edge of current unit is block/partition edge -> no skip
const int block_edge_above = (num_4x4_blocks_high_lookup[sb_type] > 1) ?
!(r & (num_8x8_blocks_high_lookup[sb_type] - 1)) : 1;
const int skip_this_r = skip_this && !block_edge_above;
const TX_SIZE tx_size = (plane->plane_type == PLANE_TYPE_UV)
? get_uv_tx_size(&mi[0].mbmi, plane)
: mi[0].mbmi.tx_size;
const int skip_border_4x4_c = ss_x && mi_col + c == cm->mi_cols - 1;
const int skip_border_4x4_r = ss_y && mi_row + r == cm->mi_rows - 1;
// Filter level can vary per MI
if (!(lfl[(r << 3) + (c >> ss_x)] =
get_filter_level(&cm->lf_info, &mi[0].mbmi)))
continue;
// Build masks based on the transform size of each block
if (tx_size == TX_32X32) {
if (!skip_this_c && ((c >> ss_x) & 3) == 0) {
if (!skip_border_4x4_c)
mask_16x16_c |= 1 << (c >> ss_x);
else
mask_8x8_c |= 1 << (c >> ss_x);
}
if (!skip_this_r && ((r >> ss_y) & 3) == 0) {
if (!skip_border_4x4_r)
mask_16x16[r] |= 1 << (c >> ss_x);
else
mask_8x8[r] |= 1 << (c >> ss_x);
}
} else if (tx_size == TX_16X16) {
if (!skip_this_c && ((c >> ss_x) & 1) == 0) {
if (!skip_border_4x4_c)
mask_16x16_c |= 1 << (c >> ss_x);
else
mask_8x8_c |= 1 << (c >> ss_x);
}
if (!skip_this_r && ((r >> ss_y) & 1) == 0) {
if (!skip_border_4x4_r)
mask_16x16[r] |= 1 << (c >> ss_x);
else
mask_8x8[r] |= 1 << (c >> ss_x);
}
} else {
// force 8x8 filtering on 32x32 boundaries
if (!skip_this_c) {
if (tx_size == TX_8X8 || ((c >> ss_x) & 3) == 0)
mask_8x8_c |= 1 << (c >> ss_x);
else
mask_4x4_c |= 1 << (c >> ss_x);
}
if (!skip_this_r) {
if (tx_size == TX_8X8 || ((r >> ss_y) & 3) == 0)
mask_8x8[r] |= 1 << (c >> ss_x);
else
mask_4x4[r] |= 1 << (c >> ss_x);
}
if (!skip_this && tx_size < TX_8X8 && !skip_border_4x4_c)
mask_4x4_int[r] |= 1 << (c >> ss_x);
}
}
// Disable filtering on the leftmost column
border_mask = ~(mi_col == 0);
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_vert(CONVERT_TO_SHORTPTR(dst->buf),
dst->stride,
mask_16x16_c & border_mask,
mask_8x8_c & border_mask,
mask_4x4_c & border_mask,
mask_4x4_int[r],
&cm->lf_info, &lfl[r << 3],
(int)cm->bit_depth);
} else {
filter_selectively_vert(dst->buf, dst->stride,
mask_16x16_c & border_mask,
mask_8x8_c & border_mask,
mask_4x4_c & border_mask,
mask_4x4_int[r],
&cm->lf_info, &lfl[r << 3]);
}
#else
filter_selectively_vert(dst->buf, dst->stride,
mask_16x16_c & border_mask,
mask_8x8_c & border_mask,
mask_4x4_c & border_mask,
mask_4x4_int[r],
&cm->lf_info, &lfl[r << 3]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 8 * dst->stride;
mi_8x8 += row_step_stride;
}
// Now do horizontal pass
dst->buf = dst0;
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += row_step) {
const int skip_border_4x4_r = ss_y && mi_row + r == cm->mi_rows - 1;
const unsigned int mask_4x4_int_r = skip_border_4x4_r ? 0 : mask_4x4_int[r];
unsigned int mask_16x16_r;
unsigned int mask_8x8_r;
unsigned int mask_4x4_r;
if (mi_row + r == 0) {
mask_16x16_r = 0;
mask_8x8_r = 0;
mask_4x4_r = 0;
} else {
mask_16x16_r = mask_16x16[r];
mask_8x8_r = mask_8x8[r];
mask_4x4_r = mask_4x4[r];
}
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_horiz(CONVERT_TO_SHORTPTR(dst->buf),
dst->stride,
mask_16x16_r,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_r,
&cm->lf_info, &lfl[r << 3],
(int)cm->bit_depth);
} else {
filter_selectively_horiz(dst->buf, dst->stride,
mask_16x16_r,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_r,
&cm->lf_info, &lfl[r << 3]);
}
#else
filter_selectively_horiz(dst->buf, dst->stride,
mask_16x16_r,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_r,
&cm->lf_info, &lfl[r << 3]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 8 * dst->stride;
}
}
void vp10_filter_block_plane_ss00(VP10_COMMON *const cm,
struct macroblockd_plane *const plane,
int mi_row,
LOOP_FILTER_MASK *lfm) {
struct buf_2d *const dst = &plane->dst;
uint8_t *const dst0 = dst->buf;
int r;
uint64_t mask_16x16 = lfm->left_y[TX_16X16];
uint64_t mask_8x8 = lfm->left_y[TX_8X8];
uint64_t mask_4x4 = lfm->left_y[TX_4X4];
uint64_t mask_4x4_int = lfm->int_4x4_y;
assert(plane->subsampling_x == 0 && plane->subsampling_y == 0);
// Vertical pass: do 2 rows at one time
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += 2) {
unsigned int mask_16x16_l = mask_16x16 & 0xffff;
unsigned int mask_8x8_l = mask_8x8 & 0xffff;
unsigned int mask_4x4_l = mask_4x4 & 0xffff;
unsigned int mask_4x4_int_l = mask_4x4_int & 0xffff;
// Disable filtering on the leftmost column.
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_vert_row2(
plane->subsampling_x, CONVERT_TO_SHORTPTR(dst->buf), dst->stride,
mask_16x16_l, mask_8x8_l, mask_4x4_l, mask_4x4_int_l, &cm->lf_info,
&lfm->lfl_y[r << 3], (int)cm->bit_depth);
} else {
filter_selectively_vert_row2(
plane->subsampling_x, dst->buf, dst->stride, mask_16x16_l, mask_8x8_l,
mask_4x4_l, mask_4x4_int_l, &cm->lf_info, &lfm->lfl_y[r << 3]);
}
#else
filter_selectively_vert_row2(
plane->subsampling_x, dst->buf, dst->stride, mask_16x16_l, mask_8x8_l,
mask_4x4_l, mask_4x4_int_l, &cm->lf_info, &lfm->lfl_y[r << 3]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 16 * dst->stride;
mask_16x16 >>= 16;
mask_8x8 >>= 16;
mask_4x4 >>= 16;
mask_4x4_int >>= 16;
}
// Horizontal pass
dst->buf = dst0;
mask_16x16 = lfm->above_y[TX_16X16];
mask_8x8 = lfm->above_y[TX_8X8];
mask_4x4 = lfm->above_y[TX_4X4];
mask_4x4_int = lfm->int_4x4_y;
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r++) {
unsigned int mask_16x16_r;
unsigned int mask_8x8_r;
unsigned int mask_4x4_r;
if (mi_row + r == 0) {
mask_16x16_r = 0;
mask_8x8_r = 0;
mask_4x4_r = 0;
} else {
mask_16x16_r = mask_16x16 & 0xff;
mask_8x8_r = mask_8x8 & 0xff;
mask_4x4_r = mask_4x4 & 0xff;
}
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_horiz(
CONVERT_TO_SHORTPTR(dst->buf), dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int & 0xff, &cm->lf_info, &lfm->lfl_y[r << 3],
(int)cm->bit_depth);
} else {
filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int & 0xff, &cm->lf_info,
&lfm->lfl_y[r << 3]);
}
#else
filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int & 0xff, &cm->lf_info,
&lfm->lfl_y[r << 3]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 8 * dst->stride;
mask_16x16 >>= 8;
mask_8x8 >>= 8;
mask_4x4 >>= 8;
mask_4x4_int >>= 8;
}
}
void vp10_filter_block_plane_ss11(VP10_COMMON *const cm,
struct macroblockd_plane *const plane,
int mi_row,
LOOP_FILTER_MASK *lfm) {
struct buf_2d *const dst = &plane->dst;
uint8_t *const dst0 = dst->buf;
int r, c;
uint16_t mask_16x16 = lfm->left_uv[TX_16X16];
uint16_t mask_8x8 = lfm->left_uv[TX_8X8];
uint16_t mask_4x4 = lfm->left_uv[TX_4X4];
uint16_t mask_4x4_int = lfm->int_4x4_uv;
assert(plane->subsampling_x == 1 && plane->subsampling_y == 1);
// Vertical pass: do 2 rows at one time
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += 4) {
if (plane->plane_type == 1) {
for (c = 0; c < (MI_BLOCK_SIZE >> 1); c++) {
lfm->lfl_uv[(r << 1) + c] = lfm->lfl_y[(r << 3) + (c << 1)];
lfm->lfl_uv[((r + 2) << 1) + c] = lfm->lfl_y[((r + 2) << 3) + (c << 1)];
}
}
{
unsigned int mask_16x16_l = mask_16x16 & 0xff;
unsigned int mask_8x8_l = mask_8x8 & 0xff;
unsigned int mask_4x4_l = mask_4x4 & 0xff;
unsigned int mask_4x4_int_l = mask_4x4_int & 0xff;
// Disable filtering on the leftmost column.
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_vert_row2(
plane->subsampling_x, CONVERT_TO_SHORTPTR(dst->buf), dst->stride,
mask_16x16_l, mask_8x8_l, mask_4x4_l, mask_4x4_int_l, &cm->lf_info,
&lfm->lfl_uv[r << 1], (int)cm->bit_depth);
} else {
filter_selectively_vert_row2(
plane->subsampling_x, dst->buf, dst->stride,
mask_16x16_l, mask_8x8_l, mask_4x4_l, mask_4x4_int_l, &cm->lf_info,
&lfm->lfl_uv[r << 1]);
}
#else
filter_selectively_vert_row2(
plane->subsampling_x, dst->buf, dst->stride,
mask_16x16_l, mask_8x8_l, mask_4x4_l, mask_4x4_int_l, &cm->lf_info,
&lfm->lfl_uv[r << 1]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 16 * dst->stride;
mask_16x16 >>= 8;
mask_8x8 >>= 8;
mask_4x4 >>= 8;
mask_4x4_int >>= 8;
}
}
// Horizontal pass
dst->buf = dst0;
mask_16x16 = lfm->above_uv[TX_16X16];
mask_8x8 = lfm->above_uv[TX_8X8];
mask_4x4 = lfm->above_uv[TX_4X4];
mask_4x4_int = lfm->int_4x4_uv;
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += 2) {
const int skip_border_4x4_r = mi_row + r == cm->mi_rows - 1;
const unsigned int mask_4x4_int_r =
skip_border_4x4_r ? 0 : (mask_4x4_int & 0xf);
unsigned int mask_16x16_r;
unsigned int mask_8x8_r;
unsigned int mask_4x4_r;
if (mi_row + r == 0) {
mask_16x16_r = 0;
mask_8x8_r = 0;
mask_4x4_r = 0;
} else {
mask_16x16_r = mask_16x16 & 0xf;
mask_8x8_r = mask_8x8 & 0xf;
mask_4x4_r = mask_4x4 & 0xf;
}
#if CONFIG_VP9_HIGHBITDEPTH
if (cm->use_highbitdepth) {
highbd_filter_selectively_horiz(CONVERT_TO_SHORTPTR(dst->buf),
dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int_r, &cm->lf_info,
&lfm->lfl_uv[r << 1], (int)cm->bit_depth);
} else {
filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int_r, &cm->lf_info,
&lfm->lfl_uv[r << 1]);
}
#else
filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r,
mask_4x4_r, mask_4x4_int_r, &cm->lf_info,
&lfm->lfl_uv[r << 1]);
#endif // CONFIG_VP9_HIGHBITDEPTH
dst->buf += 8 * dst->stride;
mask_16x16 >>= 4;
mask_8x8 >>= 4;
mask_4x4 >>= 4;
mask_4x4_int >>= 4;
}
}
void vp10_loop_filter_rows(YV12_BUFFER_CONFIG *frame_buffer,
VP10_COMMON *cm,
struct macroblockd_plane planes[MAX_MB_PLANE],
int start, int stop, int y_only) {
const int num_planes = y_only ? 1 : MAX_MB_PLANE;
enum lf_path path;
LOOP_FILTER_MASK lfm;
int mi_row, mi_col;
if (y_only)
path = LF_PATH_444;
else if (planes[1].subsampling_y == 1 && planes[1].subsampling_x == 1)
path = LF_PATH_420;
else if (planes[1].subsampling_y == 0 && planes[1].subsampling_x == 0)
path = LF_PATH_444;
else
path = LF_PATH_SLOW;
for (mi_row = start; mi_row < stop; mi_row += MI_BLOCK_SIZE) {
MODE_INFO **mi = cm->mi_grid_visible + mi_row * cm->mi_stride;
for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE) {
int plane;
vp10_setup_dst_planes(planes, frame_buffer, mi_row, mi_col);
// TODO(JBB): Make setup_mask work for non 420.
vp10_setup_mask(cm, mi_row, mi_col, mi + mi_col, cm->mi_stride,
&lfm);
vp10_filter_block_plane_ss00(cm, &planes[0], mi_row, &lfm);
for (plane = 1; plane < num_planes; ++plane) {
switch (path) {
case LF_PATH_420:
vp10_filter_block_plane_ss11(cm, &planes[plane], mi_row, &lfm);
break;
case LF_PATH_444:
vp10_filter_block_plane_ss00(cm, &planes[plane], mi_row, &lfm);
break;
case LF_PATH_SLOW:
vp10_filter_block_plane_non420(cm, &planes[plane], mi + mi_col,
mi_row, mi_col);
break;
}
}
}
}
}
void vp10_loop_filter_frame(YV12_BUFFER_CONFIG *frame,
VP10_COMMON *cm, MACROBLOCKD *xd,
int frame_filter_level,
int y_only, int partial_frame) {
int start_mi_row, end_mi_row, mi_rows_to_filter;
if (!frame_filter_level) return;
start_mi_row = 0;
mi_rows_to_filter = cm->mi_rows;
if (partial_frame && cm->mi_rows > 8) {
start_mi_row = cm->mi_rows >> 1;
start_mi_row &= 0xfffffff8;
mi_rows_to_filter = VPXMAX(cm->mi_rows / 8, 8);
}
end_mi_row = start_mi_row + mi_rows_to_filter;
vp10_loop_filter_frame_init(cm, frame_filter_level);
vp10_loop_filter_rows(frame, cm, xd->plane,
start_mi_row, end_mi_row,
y_only);
}
void vp10_loop_filter_data_reset(
LFWorkerData *lf_data, YV12_BUFFER_CONFIG *frame_buffer,
struct VP10Common *cm,
const struct macroblockd_plane planes[MAX_MB_PLANE]) {
lf_data->frame_buffer = frame_buffer;
lf_data->cm = cm;
lf_data->start = 0;
lf_data->stop = 0;
lf_data->y_only = 0;
memcpy(lf_data->planes, planes, sizeof(lf_data->planes));
}
int vp10_loop_filter_worker(LFWorkerData *const lf_data, void *unused) {
(void)unused;
vp10_loop_filter_rows(lf_data->frame_buffer, lf_data->cm, lf_data->planes,
lf_data->start, lf_data->stop, lf_data->y_only);
return 1;
}
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