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Diffstat (limited to 'media/libvpx/libvpx/vp9/common/vp9_reconinter.c')
-rw-r--r--media/libvpx/libvpx/vp9/common/vp9_reconinter.c290
1 files changed, 290 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/common/vp9_reconinter.c b/media/libvpx/libvpx/vp9/common/vp9_reconinter.c
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index 0000000000..0a60b853d8
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+++ b/media/libvpx/libvpx/vp9/common/vp9_reconinter.c
@@ -0,0 +1,290 @@
+/*
+ * 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 <assert.h>
+
+#include "./vpx_scale_rtcd.h"
+#include "./vpx_config.h"
+
+#include "vp9/common/vp9_blockd.h"
+#include "vp9/common/vp9_reconinter.h"
+#include "vp9/common/vp9_reconintra.h"
+
+#include "vpx/vpx_integer.h"
+#include "vpx_scale/yv12config.h"
+
+#if CONFIG_VP9_HIGHBITDEPTH
+void vp9_highbd_build_inter_predictor(
+ const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride,
+ const MV *src_mv, const struct scale_factors *sf, int w, int h, int ref,
+ const InterpKernel *kernel, enum mv_precision precision, int x, int y,
+ int bd) {
+ const int is_q4 = precision == MV_PRECISION_Q4;
+ const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
+ is_q4 ? src_mv->col : src_mv->col * 2 };
+ MV32 mv = vp9_scale_mv(&mv_q4, x, y, sf);
+ const int subpel_x = mv.col & SUBPEL_MASK;
+ const int subpel_y = mv.row & SUBPEL_MASK;
+
+ src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);
+
+ highbd_inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
+ sf, w, h, ref, kernel, sf->x_step_q4, sf->y_step_q4,
+ bd);
+}
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+void vp9_build_inter_predictor(const uint8_t *src, int src_stride, uint8_t *dst,
+ int dst_stride, const MV *src_mv,
+ const struct scale_factors *sf, int w, int h,
+ int ref, const InterpKernel *kernel,
+ enum mv_precision precision, int x, int y) {
+ const int is_q4 = precision == MV_PRECISION_Q4;
+ const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
+ is_q4 ? src_mv->col : src_mv->col * 2 };
+ MV32 mv = vp9_scale_mv(&mv_q4, x, y, sf);
+ const int subpel_x = mv.col & SUBPEL_MASK;
+ const int subpel_y = mv.row & SUBPEL_MASK;
+
+ src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);
+
+ inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y, sf, w,
+ h, ref, kernel, sf->x_step_q4, sf->y_step_q4);
+}
+
+static INLINE int round_mv_comp_q4(int value) {
+ return (value < 0 ? value - 2 : value + 2) / 4;
+}
+
+static MV mi_mv_pred_q4(const MODE_INFO *mi, int idx) {
+ MV res = { round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.row +
+ mi->bmi[1].as_mv[idx].as_mv.row +
+ mi->bmi[2].as_mv[idx].as_mv.row +
+ mi->bmi[3].as_mv[idx].as_mv.row),
+ round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.col +
+ mi->bmi[1].as_mv[idx].as_mv.col +
+ mi->bmi[2].as_mv[idx].as_mv.col +
+ mi->bmi[3].as_mv[idx].as_mv.col) };
+ return res;
+}
+
+static INLINE int round_mv_comp_q2(int value) {
+ return (value < 0 ? value - 1 : value + 1) / 2;
+}
+
+static MV mi_mv_pred_q2(const MODE_INFO *mi, int idx, int block0, int block1) {
+ MV res = { round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.row +
+ mi->bmi[block1].as_mv[idx].as_mv.row),
+ round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.col +
+ mi->bmi[block1].as_mv[idx].as_mv.col) };
+ return res;
+}
+
+// TODO(jkoleszar): yet another mv clamping function :-(
+MV clamp_mv_to_umv_border_sb(const MACROBLOCKD *xd, const MV *src_mv, int bw,
+ int bh, int ss_x, int ss_y) {
+ // If the MV points so far into the UMV border that no visible pixels
+ // are used for reconstruction, the subpel part of the MV can be
+ // discarded and the MV limited to 16 pixels with equivalent results.
+ const int spel_left = (VP9_INTERP_EXTEND + bw) << SUBPEL_BITS;
+ const int spel_right = spel_left - SUBPEL_SHIFTS;
+ const int spel_top = (VP9_INTERP_EXTEND + bh) << SUBPEL_BITS;
+ const int spel_bottom = spel_top - SUBPEL_SHIFTS;
+ MV clamped_mv = { (short)(src_mv->row * (1 << (1 - ss_y))),
+ (short)(src_mv->col * (1 << (1 - ss_x))) };
+ assert(ss_x <= 1);
+ assert(ss_y <= 1);
+
+ clamp_mv(&clamped_mv, xd->mb_to_left_edge * (1 << (1 - ss_x)) - spel_left,
+ xd->mb_to_right_edge * (1 << (1 - ss_x)) + spel_right,
+ xd->mb_to_top_edge * (1 << (1 - ss_y)) - spel_top,
+ xd->mb_to_bottom_edge * (1 << (1 - ss_y)) + spel_bottom);
+
+ return clamped_mv;
+}
+
+MV average_split_mvs(const struct macroblockd_plane *pd, const MODE_INFO *mi,
+ int ref, int block) {
+ const int ss_idx = ((pd->subsampling_x > 0) << 1) | (pd->subsampling_y > 0);
+ MV res = { 0, 0 };
+ switch (ss_idx) {
+ case 0: res = mi->bmi[block].as_mv[ref].as_mv; break;
+ case 1: res = mi_mv_pred_q2(mi, ref, block, block + 2); break;
+ case 2: res = mi_mv_pred_q2(mi, ref, block, block + 1); break;
+ case 3: res = mi_mv_pred_q4(mi, ref); break;
+ default: assert(ss_idx <= 3 && ss_idx >= 0);
+ }
+ return res;
+}
+
+static void build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
+ int bw, int bh, int x, int y, int w, int h,
+ int mi_x, int mi_y) {
+ struct macroblockd_plane *const pd = &xd->plane[plane];
+ const MODE_INFO *mi = xd->mi[0];
+ const int is_compound = has_second_ref(mi);
+ const InterpKernel *kernel = vp9_filter_kernels[mi->interp_filter];
+ int ref;
+
+ for (ref = 0; ref < 1 + is_compound; ++ref) {
+ const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
+ struct buf_2d *const pre_buf = &pd->pre[ref];
+ struct buf_2d *const dst_buf = &pd->dst;
+ uint8_t *const dst = dst_buf->buf + (int64_t)dst_buf->stride * y + x;
+ const MV mv = mi->sb_type < BLOCK_8X8
+ ? average_split_mvs(pd, mi, ref, block)
+ : mi->mv[ref].as_mv;
+
+ // TODO(jkoleszar): This clamping is done in the incorrect place for the
+ // scaling case. It needs to be done on the scaled MV, not the pre-scaling
+ // MV. Note however that it performs the subsampling aware scaling so
+ // that the result is always q4.
+ // mv_precision precision is MV_PRECISION_Q4.
+ const MV mv_q4 = clamp_mv_to_umv_border_sb(
+ xd, &mv, bw, bh, pd->subsampling_x, pd->subsampling_y);
+
+ uint8_t *pre;
+ MV32 scaled_mv;
+ int xs, ys, subpel_x, subpel_y;
+ const int is_scaled = vp9_is_scaled(sf);
+
+ if (is_scaled) {
+ // Co-ordinate of containing block to pixel precision.
+ const int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x));
+ const int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y));
+ const YV12_BUFFER_CONFIG *ref_buf = xd->block_refs[ref]->buf;
+ uint8_t *buf_array[] = { ref_buf->y_buffer, ref_buf->u_buffer,
+ ref_buf->v_buffer };
+ const int stride_array[] = { ref_buf->y_stride, ref_buf->uv_stride,
+ ref_buf->uv_stride };
+#if 0 // CONFIG_BETTER_HW_COMPATIBILITY
+ assert(xd->mi[0]->sb_type != BLOCK_4X8 &&
+ xd->mi[0]->sb_type != BLOCK_8X4);
+ assert(mv_q4.row == mv.row * (1 << (1 - pd->subsampling_y)) &&
+ mv_q4.col == mv.col * (1 << (1 - pd->subsampling_x)));
+#endif
+ pre_buf->buf = buf_array[plane];
+ pre_buf->stride = stride_array[plane];
+
+ pre_buf->buf +=
+ scaled_buffer_offset(x_start + x, y_start + y, pre_buf->stride, sf);
+ pre = pre_buf->buf;
+ scaled_mv = vp9_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
+ xs = sf->x_step_q4;
+ ys = sf->y_step_q4;
+ } else {
+ pre = pre_buf->buf + ((int64_t)y * pre_buf->stride + x);
+ scaled_mv.row = mv_q4.row;
+ scaled_mv.col = mv_q4.col;
+ xs = ys = 16;
+ }
+ subpel_x = scaled_mv.col & SUBPEL_MASK;
+ subpel_y = scaled_mv.row & SUBPEL_MASK;
+ pre += (scaled_mv.row >> SUBPEL_BITS) * pre_buf->stride +
+ (scaled_mv.col >> SUBPEL_BITS);
+
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ highbd_inter_predictor(CONVERT_TO_SHORTPTR(pre), pre_buf->stride,
+ CONVERT_TO_SHORTPTR(dst), dst_buf->stride,
+ subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys,
+ xd->bd);
+ } else {
+ inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride, subpel_x,
+ subpel_y, sf, w, h, ref, kernel, xs, ys);
+ }
+#else
+ inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride, subpel_x,
+ subpel_y, sf, w, h, ref, kernel, xs, ys);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+ }
+}
+
+static void build_inter_predictors_for_planes(MACROBLOCKD *xd, BLOCK_SIZE bsize,
+ int mi_row, int mi_col,
+ int plane_from, int plane_to) {
+ int plane;
+ const int mi_x = mi_col * MI_SIZE;
+ const int mi_y = mi_row * MI_SIZE;
+ for (plane = plane_from; plane <= plane_to; ++plane) {
+ const BLOCK_SIZE plane_bsize =
+ get_plane_block_size(bsize, &xd->plane[plane]);
+ const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
+ const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
+ const int bw = 4 * num_4x4_w;
+ const int bh = 4 * num_4x4_h;
+
+ if (xd->mi[0]->sb_type < BLOCK_8X8) {
+ int i = 0, x, y;
+ assert(bsize == BLOCK_8X8);
+ for (y = 0; y < num_4x4_h; ++y)
+ for (x = 0; x < num_4x4_w; ++x)
+ build_inter_predictors(xd, plane, i++, bw, bh, 4 * x, 4 * y, 4, 4,
+ mi_x, mi_y);
+ } else {
+ build_inter_predictors(xd, plane, 0, bw, bh, 0, 0, bw, bh, mi_x, mi_y);
+ }
+ }
+}
+
+void vp9_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
+ BLOCK_SIZE bsize) {
+ build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0, 0);
+}
+
+void vp9_build_inter_predictors_sbp(MACROBLOCKD *xd, int mi_row, int mi_col,
+ BLOCK_SIZE bsize, int plane) {
+ build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, plane, plane);
+}
+
+void vp9_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
+ BLOCK_SIZE bsize) {
+ build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 1,
+ MAX_MB_PLANE - 1);
+}
+
+void vp9_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
+ BLOCK_SIZE bsize) {
+ build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0,
+ MAX_MB_PLANE - 1);
+}
+
+void vp9_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
+ const YV12_BUFFER_CONFIG *src, int mi_row,
+ int mi_col) {
+ uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
+ src->v_buffer };
+ const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
+ src->uv_stride };
+ int i;
+
+ for (i = 0; i < MAX_MB_PLANE; ++i) {
+ struct macroblockd_plane *const pd = &planes[i];
+ setup_pred_plane(&pd->dst, buffers[i], strides[i], mi_row, mi_col, NULL,
+ pd->subsampling_x, pd->subsampling_y);
+ }
+}
+
+void vp9_setup_pre_planes(MACROBLOCKD *xd, int idx,
+ const YV12_BUFFER_CONFIG *src, int mi_row, int mi_col,
+ const struct scale_factors *sf) {
+ if (src != NULL) {
+ int i;
+ uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
+ src->v_buffer };
+ const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
+ src->uv_stride };
+ for (i = 0; i < MAX_MB_PLANE; ++i) {
+ struct macroblockd_plane *const pd = &xd->plane[i];
+ setup_pred_plane(&pd->pre[idx], buffers[i], strides[i], mi_row, mi_col,
+ sf, pd->subsampling_x, pd->subsampling_y);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-06 13:54:21 +0000