diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/common/vp9_loopfilter.c')
| -rw-r--r-- | media/libvpx/libvpx/vp9/common/vp9_loopfilter.c | 1633 |
1 files changed, 1633 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_loopfilter.c b/media/libvpx/libvpx/vp9/common/vp9_loopfilter.c new file mode 100644 index 0000000000..1a9d45ae77 --- /dev/null +++ b/media/libvpx/libvpx/vp9/common/vp9_loopfilter.c @@ -0,0 +1,1633 @@ +/* + * 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 "vp9/common/vp9_loopfilter.h" +#include "vp9/common/vp9_onyxc_int.h" +#include "vp9/common/vp9_reconinter.h" +#include "vpx_dsp/vpx_dsp_common.h" +#include "vpx_mem/vpx_mem.h" +#include "vpx_ports/mem.h" + +#include "vp9/common/vp9_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 MODE_INFO *mi) { + return lfi_n->lvl[mi->segment_id][mi->ref_frame[0]][mode_lf_lut[mi->mode]]; +} + +void vp9_loop_filter_init(VP9_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 vp9_loop_filter_frame_init(VP9_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, + unsigned int mask_8x8, unsigned int mask_4x4, unsigned int mask_4x4_int, + const loop_filter_thresh *lfthr, const uint8_t *lfl) { + const int dual_mask_cutoff = subsampling_factor ? 0xff : 0xffff; + const int lfl_forward = subsampling_factor ? 4 : 8; + const unsigned int dual_one = 1 | (1 << lfl_forward); + unsigned int mask; + uint8_t *ss[2]; + ss[0] = s; + + for (mask = + (mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int) & dual_mask_cutoff; + mask; mask = (mask & ~dual_one) >> 1) { + if (mask & dual_one) { + const loop_filter_thresh *lfis[2]; + lfis[0] = lfthr + *lfl; + lfis[1] = lfthr + *(lfl + lfl_forward); + ss[1] = ss[0] + 8 * pitch; + + if (mask_16x16 & dual_one) { + if ((mask_16x16 & dual_one) == dual_one) { + vpx_lpf_vertical_16_dual(ss[0], pitch, lfis[0]->mblim, lfis[0]->lim, + lfis[0]->hev_thr); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_16x16 & 1)]; + vpx_lpf_vertical_16(ss[!(mask_16x16 & 1)], pitch, lfi->mblim, + lfi->lim, lfi->hev_thr); + } + } + + if (mask_8x8 & dual_one) { + if ((mask_8x8 & dual_one) == dual_one) { + vpx_lpf_vertical_8_dual(ss[0], pitch, lfis[0]->mblim, lfis[0]->lim, + lfis[0]->hev_thr, lfis[1]->mblim, + lfis[1]->lim, lfis[1]->hev_thr); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_8x8 & 1)]; + vpx_lpf_vertical_8(ss[!(mask_8x8 & 1)], pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + } + } + + if (mask_4x4 & dual_one) { + if ((mask_4x4 & dual_one) == dual_one) { + vpx_lpf_vertical_4_dual(ss[0], pitch, lfis[0]->mblim, lfis[0]->lim, + lfis[0]->hev_thr, lfis[1]->mblim, + lfis[1]->lim, lfis[1]->hev_thr); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_4x4 & 1)]; + vpx_lpf_vertical_4(ss[!(mask_4x4 & 1)], pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + } + } + + if (mask_4x4_int & dual_one) { + if ((mask_4x4_int & dual_one) == dual_one) { + vpx_lpf_vertical_4_dual( + ss[0] + 4, pitch, lfis[0]->mblim, lfis[0]->lim, lfis[0]->hev_thr, + lfis[1]->mblim, lfis[1]->lim, lfis[1]->hev_thr); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_4x4_int & 1)]; + vpx_lpf_vertical_4(ss[!(mask_4x4_int & 1)] + 4, pitch, lfi->mblim, + lfi->lim, lfi->hev_thr); + } + } + } + + ss[0] += 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_row2( + int subsampling_factor, 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_thresh *lfthr, const uint8_t *lfl, int bd) { + const int dual_mask_cutoff = subsampling_factor ? 0xff : 0xffff; + const int lfl_forward = subsampling_factor ? 4 : 8; + const unsigned int dual_one = 1 | (1 << lfl_forward); + unsigned int mask; + uint16_t *ss[2]; + ss[0] = s; + + for (mask = + (mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int) & dual_mask_cutoff; + mask; mask = (mask & ~dual_one) >> 1) { + if (mask & dual_one) { + const loop_filter_thresh *lfis[2]; + lfis[0] = lfthr + *lfl; + lfis[1] = lfthr + *(lfl + lfl_forward); + ss[1] = ss[0] + 8 * pitch; + + if (mask_16x16 & dual_one) { + if ((mask_16x16 & dual_one) == dual_one) { + vpx_highbd_lpf_vertical_16_dual(ss[0], pitch, lfis[0]->mblim, + lfis[0]->lim, lfis[0]->hev_thr, bd); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_16x16 & 1)]; + vpx_highbd_lpf_vertical_16(ss[!(mask_16x16 & 1)], pitch, lfi->mblim, + lfi->lim, lfi->hev_thr, bd); + } + } + + if (mask_8x8 & dual_one) { + if ((mask_8x8 & dual_one) == dual_one) { + vpx_highbd_lpf_vertical_8_dual( + ss[0], pitch, lfis[0]->mblim, lfis[0]->lim, lfis[0]->hev_thr, + lfis[1]->mblim, lfis[1]->lim, lfis[1]->hev_thr, bd); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_8x8 & 1)]; + vpx_highbd_lpf_vertical_8(ss[!(mask_8x8 & 1)], pitch, lfi->mblim, + lfi->lim, lfi->hev_thr, bd); + } + } + + if (mask_4x4 & dual_one) { + if ((mask_4x4 & dual_one) == dual_one) { + vpx_highbd_lpf_vertical_4_dual( + ss[0], pitch, lfis[0]->mblim, lfis[0]->lim, lfis[0]->hev_thr, + lfis[1]->mblim, lfis[1]->lim, lfis[1]->hev_thr, bd); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_4x4 & 1)]; + vpx_highbd_lpf_vertical_4(ss[!(mask_4x4 & 1)], pitch, lfi->mblim, + lfi->lim, lfi->hev_thr, bd); + } + } + + if (mask_4x4_int & dual_one) { + if ((mask_4x4_int & dual_one) == dual_one) { + vpx_highbd_lpf_vertical_4_dual( + ss[0] + 4, pitch, lfis[0]->mblim, lfis[0]->lim, lfis[0]->hev_thr, + lfis[1]->mblim, lfis[1]->lim, lfis[1]->hev_thr, bd); + } else { + const loop_filter_thresh *lfi = lfis[!(mask_4x4_int & 1)]; + vpx_highbd_lpf_vertical_4(ss[!(mask_4x4_int & 1)] + 4, pitch, + lfi->mblim, lfi->lim, lfi->hev_thr, bd); + } + } + } + + ss[0] += 8; + lfl += 1; + mask_16x16 >>= 1; + mask_8x8 >>= 1; + mask_4x4 >>= 1; + mask_4x4_int >>= 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_thresh *lfthr, const uint8_t *lfl) { + unsigned int mask; + int count; + + for (mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int; mask; + mask >>= count) { + count = 1; + if (mask & 1) { + const loop_filter_thresh *lfi = lfthr + *lfl; + + if (mask_16x16 & 1) { + if ((mask_16x16 & 3) == 3) { + vpx_lpf_horizontal_16_dual(s, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + count = 2; + } else { + vpx_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr); + } + } else if (mask_8x8 & 1) { + if ((mask_8x8 & 3) == 3) { + // Next block's thresholds. + const loop_filter_thresh *lfin = 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); + else if (mask_4x4_int & 2) + vpx_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim, + lfin->lim, lfin->hev_thr); + } + count = 2; + } else { + vpx_lpf_horizontal_8(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr); + + if (mask_4x4_int & 1) + vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + } + } else if (mask_4x4 & 1) { + if ((mask_4x4 & 3) == 3) { + // Next block's thresholds. + const loop_filter_thresh *lfin = 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); + else if (mask_4x4_int & 2) + vpx_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim, + lfin->lim, lfin->hev_thr); + } + count = 2; + } else { + vpx_lpf_horizontal_4(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr); + + if (mask_4x4_int & 1) + vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + } + } else { + vpx_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr); + } + } + 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_thresh *lfthr, 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) { + count = 1; + if (mask & 1) { + const loop_filter_thresh *lfi = lfthr + *lfl; + + if (mask_16x16 & 1) { + if ((mask_16x16 & 3) == 3) { + vpx_highbd_lpf_horizontal_16_dual(s, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, bd); + count = 2; + } else { + vpx_highbd_lpf_horizontal_16(s, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, bd); + } + } else if (mask_8x8 & 1) { + if ((mask_8x8 & 3) == 3) { + // Next block's thresholds. + const loop_filter_thresh *lfin = 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, bd); + } else if (mask_4x4_int & 2) { + vpx_highbd_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim, + lfin->lim, lfin->hev_thr, bd); + } + } + count = 2; + } else { + vpx_highbd_lpf_horizontal_8(s, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, bd); + + if (mask_4x4_int & 1) { + vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, + lfi->lim, lfi->hev_thr, bd); + } + } + } else if (mask_4x4 & 1) { + if ((mask_4x4 & 3) == 3) { + // Next block's thresholds. + const loop_filter_thresh *lfin = 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, bd); + } else if (mask_4x4_int & 2) { + vpx_highbd_lpf_horizontal_4(s + 8 + 4 * pitch, pitch, lfin->mblim, + lfin->lim, lfin->hev_thr, bd); + } + } + count = 2; + } else { + vpx_highbd_lpf_horizontal_4(s, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, bd); + + if (mask_4x4_int & 1) { + vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, + lfi->lim, lfi->hev_thr, bd); + } + } + } else { + vpx_highbd_lpf_horizontal_4(s + 4 * pitch, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, 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. +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 BLOCK_SIZE block_size = mi->sb_type; + const TX_SIZE tx_size_y = mi->tx_size; + const TX_SIZE tx_size_uv = uv_txsize_lookup[block_size][tx_size_y][1][1]; + const int filter_level = get_filter_level(lfi_n, mi); + 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 (mi->skip && is_inter_block(mi)) return; + + // 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] << 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 BLOCK_SIZE block_size = mi->sb_type; + const TX_SIZE tx_size_y = mi->tx_size; + const int filter_level = get_filter_level(lfi_n, mi); + 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 (mi->skip && is_inter_block(mi)) return; + + *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] << shift_y; +} + +void vp9_adjust_mask(VP9_COMMON *const cm, const int mi_row, const int mi_col, + LOOP_FILTER_MASK *lfm) { + int i; + + // 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])); +} + +// This function sets up the bit masks for the entire 64x64 region represented +// by mi_row, mi_col. +void vp9_setup_mask(VP9_COMMON *const cm, const int mi_row, const int mi_col, + MODE_INFO **mi8x8, 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 = mi8x8; + MODE_INFO **mip2 = mi8x8; + + // 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 }; + 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); + + vp9_zero(*lfm); + assert(mip[0] != NULL); + + switch (mip[0]->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_32 = shift_32_y[idx_32]; + const int shift_uv_32 = 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]->sb_type) { + case BLOCK_32X32: + build_masks(lfi_n, mip[0], shift_y_32, shift_uv_32, lfm); + break; + case BLOCK_32X16: + build_masks(lfi_n, mip[0], shift_y_32, shift_uv_32, lfm); + if (mi_32_row_offset + 2 >= max_rows) continue; + mip2 = mip + mode_info_stride * 2; + build_masks(lfi_n, mip2[0], shift_y_32 + 16, shift_uv_32 + 4, lfm); + break; + case BLOCK_16X32: + build_masks(lfi_n, mip[0], shift_y_32, shift_uv_32, lfm); + if (mi_32_col_offset + 2 >= max_cols) continue; + mip2 = mip + 2; + build_masks(lfi_n, mip2[0], shift_y_32 + 2, shift_uv_32 + 1, lfm); + break; + default: + for (idx_16 = 0; idx_16 < 4; mip += offset_16[idx_16], ++idx_16) { + const int shift_y_16 = shift_y_32 + shift_16_y[idx_16]; + const int shift_uv_16 = shift_uv_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]->sb_type) { + case BLOCK_16X16: + build_masks(lfi_n, mip[0], shift_y_16, shift_uv_16, lfm); + break; + case BLOCK_16X8: + build_masks(lfi_n, mip[0], shift_y_16, shift_uv_16, lfm); + if (mi_16_row_offset + 1 >= max_rows) continue; + mip2 = mip + mode_info_stride; + build_y_mask(lfi_n, mip2[0], shift_y_16 + 8, lfm); + break; + case BLOCK_8X16: + build_masks(lfi_n, mip[0], shift_y_16, shift_uv_16, lfm); + if (mi_16_col_offset + 1 >= max_cols) continue; + mip2 = mip + 1; + build_y_mask(lfi_n, mip2[0], shift_y_16 + 1, lfm); + break; + default: { + const int shift_y_8_0 = shift_y_16 + shift_8_y[0]; + build_masks(lfi_n, mip[0], shift_y_8_0, shift_uv_16, lfm); + mip += offset[0]; + for (idx_8 = 1; idx_8 < 4; mip += offset[idx_8], ++idx_8) { + const int shift_y_8 = shift_y_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_8, lfm); + } + break; + } + } + } + break; + } + } + break; + } +} + +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_thresh *lfthr, 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 = 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); + } else if (mask_4x4 & 1) { + vpx_lpf_vertical_4(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr); + } + } + if (mask_4x4_int & 1) + vpx_lpf_vertical_4(s + 4, pitch, lfi->mblim, lfi->lim, lfi->hev_thr); + 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_thresh *lfthr, 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 = 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, + bd); + } else if (mask_4x4 & 1) { + vpx_highbd_lpf_vertical_4(s, pitch, lfi->mblim, lfi->lim, lfi->hev_thr, + bd); + } + } + if (mask_4x4_int & 1) + vpx_highbd_lpf_vertical_4(s + 4, pitch, lfi->mblim, lfi->lim, + lfi->hev_thr, bd); + s += 8; + lfl += 1; + mask_16x16 >>= 1; + mask_8x8 >>= 1; + mask_4x4 >>= 1; + mask_4x4_int >>= 1; + } +} +#endif // CONFIG_VP9_HIGHBITDEPTH + +void vp9_filter_block_plane_non420(VP9_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]; + unsigned int mask_8x8[MI_BLOCK_SIZE]; + unsigned int mask_4x4[MI_BLOCK_SIZE]; + unsigned int mask_4x4_int[MI_BLOCK_SIZE]; + uint8_t lfl[MI_BLOCK_SIZE * MI_BLOCK_SIZE]; + int r, c; + + vp9_zero(mask_16x16); + vp9_zero(mask_8x8); + vp9_zero(mask_4x4); + vp9_zero(mask_4x4_int); + vp9_zero(lfl); + + 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].sb_type; + const int skip_this = mi[0].skip && is_inter_block(mi); + // 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 = get_uv_tx_size(mi, plane); + 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))) + 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 ? 1u : 0u); +#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.lfthr, + &lfl[r << 3], (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + 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.lfthr, &lfl[r << 3]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#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.lfthr, &lfl[r << 3], + (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r, + mask_4x4_r, mask_4x4_int_r, cm->lf_info.lfthr, + &lfl[r << 3]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#endif // CONFIG_VP9_HIGHBITDEPTH + dst->buf += 8 * dst->stride; + } +} + +void vp9_filter_block_plane_ss00(VP9_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) { +#if CONFIG_VP9_HIGHBITDEPTH + if (cm->use_highbitdepth) { + // Disable filtering on the leftmost column. + highbd_filter_selectively_vert_row2( + plane->subsampling_x, CONVERT_TO_SHORTPTR(dst->buf), dst->stride, + (unsigned int)mask_16x16, (unsigned int)mask_8x8, + (unsigned int)mask_4x4, (unsigned int)mask_4x4_int, cm->lf_info.lfthr, + &lfm->lfl_y[r << 3], (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + // Disable filtering on the leftmost column. + filter_selectively_vert_row2( + plane->subsampling_x, dst->buf, dst->stride, (unsigned int)mask_16x16, + (unsigned int)mask_8x8, (unsigned int)mask_4x4, + (unsigned int)mask_4x4_int, cm->lf_info.lfthr, &lfm->lfl_y[r << 3]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#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.lfthr, + &lfm->lfl_y[r << 3], (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r, + mask_4x4_r, mask_4x4_int & 0xff, + cm->lf_info.lfthr, &lfm->lfl_y[r << 3]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#endif // CONFIG_VP9_HIGHBITDEPTH + + dst->buf += 8 * dst->stride; + mask_16x16 >>= 8; + mask_8x8 >>= 8; + mask_4x4 >>= 8; + mask_4x4_int >>= 8; + } +} + +void vp9_filter_block_plane_ss11(VP9_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; + uint8_t lfl_uv[16]; + + 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; + + vp9_zero(lfl_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) { + for (c = 0; c < (MI_BLOCK_SIZE >> 1); c++) { + lfl_uv[(r << 1) + c] = lfm->lfl_y[(r << 3) + (c << 1)]; + lfl_uv[((r + 2) << 1) + c] = lfm->lfl_y[((r + 2) << 3) + (c << 1)]; + } + +#if CONFIG_VP9_HIGHBITDEPTH + if (cm->use_highbitdepth) { + // Disable filtering on the leftmost column. + highbd_filter_selectively_vert_row2( + plane->subsampling_x, CONVERT_TO_SHORTPTR(dst->buf), dst->stride, + (unsigned int)mask_16x16, (unsigned int)mask_8x8, + (unsigned int)mask_4x4, (unsigned int)mask_4x4_int, cm->lf_info.lfthr, + &lfl_uv[r << 1], (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + // Disable filtering on the leftmost column. + filter_selectively_vert_row2( + plane->subsampling_x, dst->buf, dst->stride, (unsigned int)mask_16x16, + (unsigned int)mask_8x8, (unsigned int)mask_4x4, + (unsigned int)mask_4x4_int, cm->lf_info.lfthr, &lfl_uv[r << 1]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#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.lfthr, &lfl_uv[r << 1], + (int)cm->bit_depth); + } else { +#endif // CONFIG_VP9_HIGHBITDEPTH + filter_selectively_horiz(dst->buf, dst->stride, mask_16x16_r, mask_8x8_r, + mask_4x4_r, mask_4x4_int_r, cm->lf_info.lfthr, + &lfl_uv[r << 1]); +#if CONFIG_VP9_HIGHBITDEPTH + } +#endif // CONFIG_VP9_HIGHBITDEPTH + + dst->buf += 8 * dst->stride; + mask_16x16 >>= 4; + mask_8x8 >>= 4; + mask_4x4 >>= 4; + mask_4x4_int >>= 4; + } +} + +static void loop_filter_rows(YV12_BUFFER_CONFIG *frame_buffer, VP9_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; + 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; + LOOP_FILTER_MASK *lfm = get_lfm(&cm->lf, mi_row, 0); + + for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE, ++lfm) { + int plane; + + vp9_setup_dst_planes(planes, frame_buffer, mi_row, mi_col); + + // TODO(jimbankoski): For 444 only need to do y mask. + vp9_adjust_mask(cm, mi_row, mi_col, lfm); + + vp9_filter_block_plane_ss00(cm, &planes[0], mi_row, lfm); + for (plane = 1; plane < num_planes; ++plane) { + switch (path) { + case LF_PATH_420: + vp9_filter_block_plane_ss11(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_444: + vp9_filter_block_plane_ss00(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_SLOW: + vp9_filter_block_plane_non420(cm, &planes[plane], mi + mi_col, + mi_row, mi_col); + break; + } + } + } + } +} + +void vp9_loop_filter_frame(YV12_BUFFER_CONFIG *frame, VP9_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; + loop_filter_rows(frame, cm, xd->plane, start_mi_row, end_mi_row, y_only); +} + +// Used by the encoder to build the loopfilter masks. +// TODO(slavarnway): Do the encoder the same way the decoder does it and +// build the masks in line as part of the encode process. +void vp9_build_mask_frame(VP9_COMMON *cm, int frame_filter_level, + int partial_frame) { + int start_mi_row, end_mi_row, mi_rows_to_filter; + int mi_col, mi_row; + 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; + + vp9_loop_filter_frame_init(cm, frame_filter_level); + + for (mi_row = start_mi_row; mi_row < end_mi_row; 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) { + // vp9_setup_mask() zeros lfm + vp9_setup_mask(cm, mi_row, mi_col, mi + mi_col, cm->mi_stride, + get_lfm(&cm->lf, mi_row, mi_col)); + } + } +} + +// 8x8 blocks in a superblock. A "1" represents the first block in a 16x16 +// or greater area. +static const uint8_t first_block_in_16x16[8][8] = { + { 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 }, + { 1, 0, 1, 0, 1, 0, 1, 0 }, { 0, 0, 0, 0, 0, 0, 0, 0 } +}; + +// This function sets up the bit masks for a block represented +// by mi_row, mi_col in a 64x64 region. +// TODO(SJL): This function only works for yv12. +void vp9_build_mask(VP9_COMMON *cm, const MODE_INFO *mi, int mi_row, int mi_col, + int bw, int bh) { + const BLOCK_SIZE block_size = mi->sb_type; + const TX_SIZE tx_size_y = mi->tx_size; + const loop_filter_info_n *const lfi_n = &cm->lf_info; + const int filter_level = get_filter_level(lfi_n, mi); + const TX_SIZE tx_size_uv = uv_txsize_lookup[block_size][tx_size_y][1][1]; + LOOP_FILTER_MASK *const lfm = get_lfm(&cm->lf, mi_row, mi_col); + 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; + const int row_in_sb = (mi_row & 7); + const int col_in_sb = (mi_col & 7); + const int shift_y = col_in_sb + (row_in_sb << 3); + const int shift_uv = (col_in_sb >> 1) + ((row_in_sb >> 1) << 2); + const int build_uv = first_block_in_16x16[row_in_sb][col_in_sb]; + + if (!filter_level) { + return; + } else { + int index = shift_y; + int i; + for (i = 0; i < bh; i++) { + memset(&lfm->lfl_y[index], filter_level, bw); + 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; + *left_y |= left_prediction_mask[block_size] << shift_y; + + if (build_uv) { + *above_uv |= above_prediction_mask_uv[block_size] << shift_uv; + *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 (mi->skip && is_inter_block(mi)) return; + + // Add a mask for the transform size. The transform size mask is set to + // be correct for a 64x64 prediction block size. 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; + *left_y |= (size_mask[block_size] & left_64x64_txform_mask[tx_size_y]) + << shift_y; + + if (build_uv) { + *above_uv |= + (size_mask_uv[block_size] & above_64x64_txform_mask_uv[tx_size_uv]) + << shift_uv; + + *left_uv |= + (size_mask_uv[block_size] & left_64x64_txform_mask_uv[tx_size_uv]) + << shift_uv; + } + + // Try 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] << shift_y; + + if (build_uv && tx_size_uv == TX_4X4) + *int_4x4_uv |= (size_mask_uv[block_size] & 0xffff) << shift_uv; +} + +void vp9_loop_filter_data_reset( + LFWorkerData *lf_data, YV12_BUFFER_CONFIG *frame_buffer, + struct VP9Common *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)); +} + +void vp9_reset_lfm(VP9_COMMON *const cm) { + if (cm->lf.filter_level) { + memset(cm->lf.lfm, 0, + ((cm->mi_rows + (MI_BLOCK_SIZE - 1)) >> 3) * cm->lf.lfm_stride * + sizeof(*cm->lf.lfm)); + } +} + +int vp9_loop_filter_worker(void *arg1, void *unused) { + LFWorkerData *const lf_data = (LFWorkerData *)arg1; + (void)unused; + 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; +} |