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Diffstat (limited to 'media/libvpx/libvpx/vp9/common/vp9_mfqe.c')
-rw-r--r--media/libvpx/libvpx/vp9/common/vp9_mfqe.c383
1 files changed, 383 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_mfqe.c b/media/libvpx/libvpx/vp9/common/vp9_mfqe.c
new file mode 100644
index 0000000000..e76d771b8d
--- /dev/null
+++ b/media/libvpx/libvpx/vp9/common/vp9_mfqe.c
@@ -0,0 +1,383 @@
+/*
+ * Copyright (c) 2014 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 "./vp9_rtcd.h"
+#include "./vpx_dsp_rtcd.h"
+#include "./vpx_scale_rtcd.h"
+
+#include "vp9/common/vp9_onyxc_int.h"
+#include "vp9/common/vp9_postproc.h"
+
+// TODO(jackychen): Replace this function with SSE2 code. There is
+// one SSE2 implementation in vp8, so will consider how to share it
+// between vp8 and vp9.
+static void filter_by_weight(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride, int block_size, int src_weight) {
+ const int dst_weight = (1 << MFQE_PRECISION) - src_weight;
+ const int rounding_bit = 1 << (MFQE_PRECISION - 1);
+ int r, c;
+
+ for (r = 0; r < block_size; r++) {
+ for (c = 0; c < block_size; c++) {
+ dst[c] = (src[c] * src_weight + dst[c] * dst_weight + rounding_bit) >>
+ MFQE_PRECISION;
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+void vp9_filter_by_weight8x8_c(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride, int src_weight) {
+ filter_by_weight(src, src_stride, dst, dst_stride, 8, src_weight);
+}
+
+void vp9_filter_by_weight16x16_c(const uint8_t *src, int src_stride,
+ uint8_t *dst, int dst_stride, int src_weight) {
+ filter_by_weight(src, src_stride, dst, dst_stride, 16, src_weight);
+}
+
+static void filter_by_weight32x32(const uint8_t *src, int src_stride,
+ uint8_t *dst, int dst_stride, int weight) {
+ vp9_filter_by_weight16x16(src, src_stride, dst, dst_stride, weight);
+ vp9_filter_by_weight16x16(src + 16, src_stride, dst + 16, dst_stride, weight);
+ vp9_filter_by_weight16x16(src + src_stride * 16, src_stride,
+ dst + dst_stride * 16, dst_stride, weight);
+ vp9_filter_by_weight16x16(src + src_stride * 16 + 16, src_stride,
+ dst + dst_stride * 16 + 16, dst_stride, weight);
+}
+
+static void filter_by_weight64x64(const uint8_t *src, int src_stride,
+ uint8_t *dst, int dst_stride, int weight) {
+ filter_by_weight32x32(src, src_stride, dst, dst_stride, weight);
+ filter_by_weight32x32(src + 32, src_stride, dst + 32, dst_stride, weight);
+ filter_by_weight32x32(src + src_stride * 32, src_stride,
+ dst + dst_stride * 32, dst_stride, weight);
+ filter_by_weight32x32(src + src_stride * 32 + 32, src_stride,
+ dst + dst_stride * 32 + 32, dst_stride, weight);
+}
+
+static void apply_ifactor(const uint8_t *y, int y_stride, uint8_t *yd,
+ int yd_stride, const uint8_t *u, const uint8_t *v,
+ int uv_stride, uint8_t *ud, uint8_t *vd,
+ int uvd_stride, BLOCK_SIZE block_size, int weight) {
+ if (block_size == BLOCK_16X16) {
+ vp9_filter_by_weight16x16(y, y_stride, yd, yd_stride, weight);
+ vp9_filter_by_weight8x8(u, uv_stride, ud, uvd_stride, weight);
+ vp9_filter_by_weight8x8(v, uv_stride, vd, uvd_stride, weight);
+ } else if (block_size == BLOCK_32X32) {
+ filter_by_weight32x32(y, y_stride, yd, yd_stride, weight);
+ vp9_filter_by_weight16x16(u, uv_stride, ud, uvd_stride, weight);
+ vp9_filter_by_weight16x16(v, uv_stride, vd, uvd_stride, weight);
+ } else if (block_size == BLOCK_64X64) {
+ filter_by_weight64x64(y, y_stride, yd, yd_stride, weight);
+ filter_by_weight32x32(u, uv_stride, ud, uvd_stride, weight);
+ filter_by_weight32x32(v, uv_stride, vd, uvd_stride, weight);
+ }
+}
+
+// TODO(jackychen): Determine whether replace it with assembly code.
+static void copy_mem8x8(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride) {
+ int r;
+ for (r = 0; r < 8; r++) {
+ memcpy(dst, src, 8);
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void copy_mem16x16(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride) {
+ int r;
+ for (r = 0; r < 16; r++) {
+ memcpy(dst, src, 16);
+ src += src_stride;
+ dst += dst_stride;
+ }
+}
+
+static void copy_mem32x32(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride) {
+ copy_mem16x16(src, src_stride, dst, dst_stride);
+ copy_mem16x16(src + 16, src_stride, dst + 16, dst_stride);
+ copy_mem16x16(src + src_stride * 16, src_stride, dst + dst_stride * 16,
+ dst_stride);
+ copy_mem16x16(src + src_stride * 16 + 16, src_stride,
+ dst + dst_stride * 16 + 16, dst_stride);
+}
+
+static void copy_mem64x64(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride) {
+ copy_mem32x32(src, src_stride, dst, dst_stride);
+ copy_mem32x32(src + 32, src_stride, dst + 32, dst_stride);
+ copy_mem32x32(src + src_stride * 32, src_stride, dst + src_stride * 32,
+ dst_stride);
+ copy_mem32x32(src + src_stride * 32 + 32, src_stride,
+ dst + src_stride * 32 + 32, dst_stride);
+}
+
+static void copy_block(const uint8_t *y, const uint8_t *u, const uint8_t *v,
+ int y_stride, int uv_stride, uint8_t *yd, uint8_t *ud,
+ uint8_t *vd, int yd_stride, int uvd_stride,
+ BLOCK_SIZE bs) {
+ if (bs == BLOCK_16X16) {
+ copy_mem16x16(y, y_stride, yd, yd_stride);
+ copy_mem8x8(u, uv_stride, ud, uvd_stride);
+ copy_mem8x8(v, uv_stride, vd, uvd_stride);
+ } else if (bs == BLOCK_32X32) {
+ copy_mem32x32(y, y_stride, yd, yd_stride);
+ copy_mem16x16(u, uv_stride, ud, uvd_stride);
+ copy_mem16x16(v, uv_stride, vd, uvd_stride);
+ } else {
+ copy_mem64x64(y, y_stride, yd, yd_stride);
+ copy_mem32x32(u, uv_stride, ud, uvd_stride);
+ copy_mem32x32(v, uv_stride, vd, uvd_stride);
+ }
+}
+
+static void get_thr(BLOCK_SIZE bs, int qdiff, int *sad_thr, int *vdiff_thr) {
+ const int adj = qdiff >> MFQE_PRECISION;
+ if (bs == BLOCK_16X16) {
+ *sad_thr = 7 + adj;
+ } else if (bs == BLOCK_32X32) {
+ *sad_thr = 6 + adj;
+ } else { // BLOCK_64X64
+ *sad_thr = 5 + adj;
+ }
+ *vdiff_thr = 125 + qdiff;
+}
+
+static void mfqe_block(BLOCK_SIZE bs, const uint8_t *y, const uint8_t *u,
+ const uint8_t *v, int y_stride, int uv_stride,
+ uint8_t *yd, uint8_t *ud, uint8_t *vd, int yd_stride,
+ int uvd_stride, int qdiff) {
+ int sad, sad_thr, vdiff, vdiff_thr;
+ uint32_t sse;
+
+ get_thr(bs, qdiff, &sad_thr, &vdiff_thr);
+
+ if (bs == BLOCK_16X16) {
+ vdiff = (vpx_variance16x16(y, y_stride, yd, yd_stride, &sse) + 128) >> 8;
+ sad = (vpx_sad16x16(y, y_stride, yd, yd_stride) + 128) >> 8;
+ } else if (bs == BLOCK_32X32) {
+ vdiff = (vpx_variance32x32(y, y_stride, yd, yd_stride, &sse) + 512) >> 10;
+ sad = (vpx_sad32x32(y, y_stride, yd, yd_stride) + 512) >> 10;
+ } else /* if (bs == BLOCK_64X64) */ {
+ vdiff = (vpx_variance64x64(y, y_stride, yd, yd_stride, &sse) + 2048) >> 12;
+ sad = (vpx_sad64x64(y, y_stride, yd, yd_stride) + 2048) >> 12;
+ }
+
+ // vdiff > sad * 3 means vdiff should not be too small, otherwise,
+ // it might be a lighting change in smooth area. When there is a
+ // lighting change in smooth area, it is dangerous to do MFQE.
+ if (sad > 1 && vdiff > sad * 3) {
+ const int weight = 1 << MFQE_PRECISION;
+ int ifactor = weight * sad * vdiff / (sad_thr * vdiff_thr);
+ // When ifactor equals weight, no MFQE is done.
+ if (ifactor > weight) {
+ ifactor = weight;
+ }
+ apply_ifactor(y, y_stride, yd, yd_stride, u, v, uv_stride, ud, vd,
+ uvd_stride, bs, ifactor);
+ } else {
+ // Copy the block from current frame (i.e., no mfqe is done).
+ copy_block(y, u, v, y_stride, uv_stride, yd, ud, vd, yd_stride, uvd_stride,
+ bs);
+ }
+}
+
+static int mfqe_decision(MODE_INFO *mi, BLOCK_SIZE cur_bs) {
+ // Check the motion in current block(for inter frame),
+ // or check the motion in the correlated block in last frame (for keyframe).
+ const int mv_len_square = mi->mv[0].as_mv.row * mi->mv[0].as_mv.row +
+ mi->mv[0].as_mv.col * mi->mv[0].as_mv.col;
+ const int mv_threshold = 100;
+ return mi->mode >= NEARESTMV && // Not an intra block
+ cur_bs >= BLOCK_16X16 && mv_len_square <= mv_threshold;
+}
+
+// Process each partiton in a super block, recursively.
+static void mfqe_partition(VP9_COMMON *cm, MODE_INFO *mi, BLOCK_SIZE bs,
+ const uint8_t *y, const uint8_t *u, const uint8_t *v,
+ int y_stride, int uv_stride, uint8_t *yd,
+ uint8_t *ud, uint8_t *vd, int yd_stride,
+ int uvd_stride) {
+ int mi_offset, y_offset, uv_offset;
+ const BLOCK_SIZE cur_bs = mi->sb_type;
+ const int qdiff = cm->base_qindex - cm->postproc_state.last_base_qindex;
+ const int bsl = b_width_log2_lookup[bs];
+ PARTITION_TYPE partition = partition_lookup[bsl][cur_bs];
+ const BLOCK_SIZE subsize = get_subsize(bs, partition);
+
+ if (cur_bs < BLOCK_8X8) {
+ // If there are blocks smaller than 8x8, it must be on the boundary.
+ return;
+ }
+ // No MFQE on blocks smaller than 16x16
+ if (bs == BLOCK_16X16) {
+ partition = PARTITION_NONE;
+ }
+ if (bs == BLOCK_64X64) {
+ mi_offset = 4;
+ y_offset = 32;
+ uv_offset = 16;
+ } else {
+ mi_offset = 2;
+ y_offset = 16;
+ uv_offset = 8;
+ }
+ switch (partition) {
+ BLOCK_SIZE mfqe_bs, bs_tmp;
+ case PARTITION_HORZ:
+ if (bs == BLOCK_64X64) {
+ mfqe_bs = BLOCK_64X32;
+ bs_tmp = BLOCK_32X32;
+ } else {
+ mfqe_bs = BLOCK_32X16;
+ bs_tmp = BLOCK_16X16;
+ }
+ if (mfqe_decision(mi, mfqe_bs)) {
+ // Do mfqe on the first square partition.
+ mfqe_block(bs_tmp, y, u, v, y_stride, uv_stride, yd, ud, vd, yd_stride,
+ uvd_stride, qdiff);
+ // Do mfqe on the second square partition.
+ mfqe_block(bs_tmp, y + y_offset, u + uv_offset, v + uv_offset, y_stride,
+ uv_stride, yd + y_offset, ud + uv_offset, vd + uv_offset,
+ yd_stride, uvd_stride, qdiff);
+ }
+ if (mfqe_decision(mi + mi_offset * cm->mi_stride, mfqe_bs)) {
+ // Do mfqe on the first square partition.
+ mfqe_block(bs_tmp, y + y_offset * y_stride, u + uv_offset * uv_stride,
+ v + uv_offset * uv_stride, y_stride, uv_stride,
+ yd + y_offset * yd_stride, ud + uv_offset * uvd_stride,
+ vd + uv_offset * uvd_stride, yd_stride, uvd_stride, qdiff);
+ // Do mfqe on the second square partition.
+ mfqe_block(bs_tmp, y + y_offset * y_stride + y_offset,
+ u + uv_offset * uv_stride + uv_offset,
+ v + uv_offset * uv_stride + uv_offset, y_stride, uv_stride,
+ yd + y_offset * yd_stride + y_offset,
+ ud + uv_offset * uvd_stride + uv_offset,
+ vd + uv_offset * uvd_stride + uv_offset, yd_stride,
+ uvd_stride, qdiff);
+ }
+ break;
+ case PARTITION_VERT:
+ if (bs == BLOCK_64X64) {
+ mfqe_bs = BLOCK_32X64;
+ bs_tmp = BLOCK_32X32;
+ } else {
+ mfqe_bs = BLOCK_16X32;
+ bs_tmp = BLOCK_16X16;
+ }
+ if (mfqe_decision(mi, mfqe_bs)) {
+ // Do mfqe on the first square partition.
+ mfqe_block(bs_tmp, y, u, v, y_stride, uv_stride, yd, ud, vd, yd_stride,
+ uvd_stride, qdiff);
+ // Do mfqe on the second square partition.
+ mfqe_block(bs_tmp, y + y_offset * y_stride, u + uv_offset * uv_stride,
+ v + uv_offset * uv_stride, y_stride, uv_stride,
+ yd + y_offset * yd_stride, ud + uv_offset * uvd_stride,
+ vd + uv_offset * uvd_stride, yd_stride, uvd_stride, qdiff);
+ }
+ if (mfqe_decision(mi + mi_offset, mfqe_bs)) {
+ // Do mfqe on the first square partition.
+ mfqe_block(bs_tmp, y + y_offset, u + uv_offset, v + uv_offset, y_stride,
+ uv_stride, yd + y_offset, ud + uv_offset, vd + uv_offset,
+ yd_stride, uvd_stride, qdiff);
+ // Do mfqe on the second square partition.
+ mfqe_block(bs_tmp, y + y_offset * y_stride + y_offset,
+ u + uv_offset * uv_stride + uv_offset,
+ v + uv_offset * uv_stride + uv_offset, y_stride, uv_stride,
+ yd + y_offset * yd_stride + y_offset,
+ ud + uv_offset * uvd_stride + uv_offset,
+ vd + uv_offset * uvd_stride + uv_offset, yd_stride,
+ uvd_stride, qdiff);
+ }
+ break;
+ case PARTITION_NONE:
+ if (mfqe_decision(mi, cur_bs)) {
+ // Do mfqe on this partition.
+ mfqe_block(cur_bs, y, u, v, y_stride, uv_stride, yd, ud, vd, yd_stride,
+ uvd_stride, qdiff);
+ } else {
+ // Copy the block from current frame(i.e., no mfqe is done).
+ copy_block(y, u, v, y_stride, uv_stride, yd, ud, vd, yd_stride,
+ uvd_stride, bs);
+ }
+ break;
+ case PARTITION_SPLIT:
+ // Recursion on four square partitions, e.g. if bs is 64X64,
+ // then look into four 32X32 blocks in it.
+ mfqe_partition(cm, mi, subsize, y, u, v, y_stride, uv_stride, yd, ud, vd,
+ yd_stride, uvd_stride);
+ mfqe_partition(cm, mi + mi_offset, subsize, y + y_offset, u + uv_offset,
+ v + uv_offset, y_stride, uv_stride, yd + y_offset,
+ ud + uv_offset, vd + uv_offset, yd_stride, uvd_stride);
+ mfqe_partition(cm, mi + mi_offset * cm->mi_stride, subsize,
+ y + y_offset * y_stride, u + uv_offset * uv_stride,
+ v + uv_offset * uv_stride, y_stride, uv_stride,
+ yd + y_offset * yd_stride, ud + uv_offset * uvd_stride,
+ vd + uv_offset * uvd_stride, yd_stride, uvd_stride);
+ mfqe_partition(cm, mi + mi_offset * cm->mi_stride + mi_offset, subsize,
+ y + y_offset * y_stride + y_offset,
+ u + uv_offset * uv_stride + uv_offset,
+ v + uv_offset * uv_stride + uv_offset, y_stride, uv_stride,
+ yd + y_offset * yd_stride + y_offset,
+ ud + uv_offset * uvd_stride + uv_offset,
+ vd + uv_offset * uvd_stride + uv_offset, yd_stride,
+ uvd_stride);
+ break;
+ default: assert(0);
+ }
+}
+
+void vp9_mfqe(VP9_COMMON *cm) {
+ int mi_row, mi_col;
+ // Current decoded frame.
+ const YV12_BUFFER_CONFIG *show = cm->frame_to_show;
+ // Last decoded frame and will store the MFQE result.
+ YV12_BUFFER_CONFIG *dest = &cm->post_proc_buffer;
+ // Loop through each super block.
+ for (mi_row = 0; mi_row < cm->mi_rows; mi_row += MI_BLOCK_SIZE) {
+ for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE) {
+ MODE_INFO *mi;
+ MODE_INFO *mi_local = cm->mi + (mi_row * cm->mi_stride + mi_col);
+ // Motion Info in last frame.
+ MODE_INFO *mi_prev =
+ cm->postproc_state.prev_mi + (mi_row * cm->mi_stride + mi_col);
+ const uint32_t y_stride = show->y_stride;
+ const uint32_t uv_stride = show->uv_stride;
+ const uint32_t yd_stride = dest->y_stride;
+ const uint32_t uvd_stride = dest->uv_stride;
+ const uint32_t row_offset_y = mi_row << 3;
+ const uint32_t row_offset_uv = mi_row << 2;
+ const uint32_t col_offset_y = mi_col << 3;
+ const uint32_t col_offset_uv = mi_col << 2;
+ const uint8_t *y =
+ show->y_buffer + row_offset_y * y_stride + col_offset_y;
+ const uint8_t *u =
+ show->u_buffer + row_offset_uv * uv_stride + col_offset_uv;
+ const uint8_t *v =
+ show->v_buffer + row_offset_uv * uv_stride + col_offset_uv;
+ uint8_t *yd = dest->y_buffer + row_offset_y * yd_stride + col_offset_y;
+ uint8_t *ud = dest->u_buffer + row_offset_uv * uvd_stride + col_offset_uv;
+ uint8_t *vd = dest->v_buffer + row_offset_uv * uvd_stride + col_offset_uv;
+ if (frame_is_intra_only(cm)) {
+ mi = mi_prev;
+ } else {
+ mi = mi_local;
+ }
+ mfqe_partition(cm, mi, BLOCK_64X64, y, u, v, y_stride, uv_stride, yd, ud,
+ vd, yd_stride, uvd_stride);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 22:44:17 +0000