491 lines
16 KiB
C
491 lines
16 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdio.h>
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#include "vpx_ports/config.h"
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#include "vpx_rtcd.h"
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#include "reconintra.h"
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#include "vpx_mem/vpx_mem.h"
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/* For skip_recon_mb(), add vp9_build_intra_predictors_mby_s(MACROBLOCKD *xd)
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* and vp9_build_intra_predictors_mbuv_s(MACROBLOCKD *xd).
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*/
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static void d27_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c, h, w, v;
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int a, b;
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r = 0;
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for (c = 0; c < n - 2; c++) {
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if (c & 1)
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a = yleft_col[r + 1];
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else
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a = (yleft_col[r] + yleft_col[r + 1] + 1) >> 1;
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b = yabove_row[c + 2];
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ypred_ptr[c] = (2 * a + (c + 1) * b + (c + 3) / 2) / (c + 3);
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}
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for (r = 1; r < n / 2 - 1; r++) {
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for (c = 0; c < n - 2 - 2 * r; c++) {
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if (c & 1)
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a = yleft_col[r + 1];
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else
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a = (yleft_col[r] + yleft_col[r + 1] + 1) >> 1;
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b = ypred_ptr[(r - 1) * y_stride + c + 2];
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ypred_ptr[r * y_stride + c] = (2 * a + (c + 1) * b + (c + 3) / 2) / (c + 3);
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}
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}
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for (; r < n - 1; ++r) {
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for (c = 0; c < n; c++) {
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v = (c & 1 ? yleft_col[r + 1] : (yleft_col[r] + yleft_col[r + 1] + 1) >> 1);
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h = r - c / 2;
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ypred_ptr[h * y_stride + c] = v;
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}
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}
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c = 0;
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r = n - 1;
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ypred_ptr[r * y_stride] = (ypred_ptr[(r - 1) * y_stride] +
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yleft_col[r] + 1) >> 1;
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for (r = n - 2; r >= n / 2; --r) {
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w = c + (n - 1 - r) * 2;
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ypred_ptr[r * y_stride + w] = (ypred_ptr[(r - 1) * y_stride + w] +
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ypred_ptr[r * y_stride + w - 1] + 1) >> 1;
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}
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for (c = 1; c < n; c++) {
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for (r = n - 1; r >= n / 2 + c / 2; --r) {
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w = c + (n - 1 - r) * 2;
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ypred_ptr[r * y_stride + w] = (ypred_ptr[(r - 1) * y_stride + w] +
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ypred_ptr[r * y_stride + w - 1] + 1) >> 1;
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}
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}
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}
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static void d63_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c, h, w, v;
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int a, b;
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c = 0;
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for (r = 0; r < n - 2; r++) {
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if (r & 1)
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a = yabove_row[c + 1];
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else
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a = (yabove_row[c] + yabove_row[c + 1] + 1) >> 1;
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b = yleft_col[r + 2];
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ypred_ptr[r * y_stride] = (2 * a + (r + 1) * b + (r + 3) / 2) / (r + 3);
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}
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for (c = 1; c < n / 2 - 1; c++) {
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for (r = 0; r < n - 2 - 2 * c; r++) {
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if (r & 1)
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a = yabove_row[c + 1];
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else
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a = (yabove_row[c] + yabove_row[c + 1] + 1) >> 1;
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b = ypred_ptr[(r + 2) * y_stride + c - 1];
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ypred_ptr[r * y_stride + c] = (2 * a + (c + 1) * b + (c + 3) / 2) / (c + 3);
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}
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}
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for (; c < n - 1; ++c) {
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for (r = 0; r < n; r++) {
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v = (r & 1 ? yabove_row[c + 1] : (yabove_row[c] + yabove_row[c + 1] + 1) >> 1);
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w = c - r / 2;
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ypred_ptr[r * y_stride + w] = v;
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}
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}
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r = 0;
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c = n - 1;
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ypred_ptr[c] = (ypred_ptr[(c - 1)] + yabove_row[c] + 1) >> 1;
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for (c = n - 2; c >= n / 2; --c) {
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h = r + (n - 1 - c) * 2;
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ypred_ptr[h * y_stride + c] = (ypred_ptr[h * y_stride + c - 1] +
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ypred_ptr[(h - 1) * y_stride + c] + 1) >> 1;
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}
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for (r = 1; r < n; r++) {
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for (c = n - 1; c >= n / 2 + r / 2; --c) {
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h = r + (n - 1 - c) * 2;
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ypred_ptr[h * y_stride + c] = (ypred_ptr[h * y_stride + c - 1] +
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ypred_ptr[(h - 1) * y_stride + c] + 1) >> 1;
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}
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}
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}
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static void d45_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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for (r = 0; r < n - 1; ++r) {
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for (c = 0; c <= r; ++c) {
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ypred_ptr[(r - c) * y_stride + c] =
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(yabove_row[r + 1] * (c + 1) +
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yleft_col[r + 1] * (r - c + 1) + r / 2 + 1) / (r + 2);
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}
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}
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for (c = 0; c <= r; ++c) {
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int yabove_ext = yabove_row[r]; // 2*yabove_row[r] - yabove_row[r-1];
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int yleft_ext = yleft_col[r]; // 2*yleft_col[r] - yleft_col[r-1];
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yabove_ext = (yabove_ext > 255 ? 255 : (yabove_ext < 0 ? 0 : yabove_ext));
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yleft_ext = (yleft_ext > 255 ? 255 : (yleft_ext < 0 ? 0 : yleft_ext));
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ypred_ptr[(r - c) * y_stride + c] =
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(yabove_ext * (c + 1) +
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yleft_ext * (r - c + 1) + r / 2 + 1) / (r + 2);
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}
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for (r = 1; r < n; ++r) {
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for (c = n - r; c < n; ++c)
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ypred_ptr[r * y_stride + c] = (ypred_ptr[(r - 1) * y_stride + c] +
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ypred_ptr[r * y_stride + c - 1] + 1) >> 1;
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}
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}
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static void d117_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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for (c = 0; c < n; c++)
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ypred_ptr[c] = (yabove_row[c - 1] + yabove_row[c] + 1) >> 1;
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ypred_ptr += y_stride;
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for (c = 0; c < n; c++)
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ypred_ptr[c] = yabove_row[c - 1];
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ypred_ptr += y_stride;
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for (r = 2; r < n; ++r) {
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ypred_ptr[0] = yleft_col[r - 2];
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for (c = 1; c < n; c++)
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ypred_ptr[c] = ypred_ptr[-2 * y_stride + c - 1];
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ypred_ptr += y_stride;
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}
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}
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static void d135_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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ypred_ptr[0] = yabove_row[-1];
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for (c = 1; c < n; c++)
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ypred_ptr[c] = yabove_row[c - 1];
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for (r = 1; r < n; ++r)
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ypred_ptr[r * y_stride] = yleft_col[r - 1];
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ypred_ptr += y_stride;
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for (r = 1; r < n; ++r) {
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for (c = 1; c < n; c++) {
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ypred_ptr[c] = ypred_ptr[-y_stride + c - 1];
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}
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ypred_ptr += y_stride;
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}
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}
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static void d153_predictor(uint8_t *ypred_ptr, int y_stride, int n,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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ypred_ptr[0] = (yabove_row[-1] + yleft_col[0] + 1) >> 1;
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for (r = 1; r < n; r++)
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ypred_ptr[r * y_stride] = (yleft_col[r - 1] + yleft_col[r] + 1) >> 1;
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ypred_ptr++;
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ypred_ptr[0] = yabove_row[-1];
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for (r = 1; r < n; r++)
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ypred_ptr[r * y_stride] = yleft_col[r - 1];
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ypred_ptr++;
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for (c = 0; c < n - 2; c++)
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ypred_ptr[c] = yabove_row[c];
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ypred_ptr += y_stride;
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for (r = 1; r < n; ++r) {
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for (c = 0; c < n - 2; c++)
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ypred_ptr[c] = ypred_ptr[-y_stride + c - 2];
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ypred_ptr += y_stride;
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}
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}
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void vp9_recon_intra_mbuv(MACROBLOCKD *xd) {
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int i;
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for (i = 16; i < 24; i += 2) {
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BLOCKD *b = &xd->block[i];
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vp9_recon2b(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
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}
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}
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void vp9_build_intra_predictors_internal(unsigned char *src, int src_stride,
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unsigned char *ypred_ptr,
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int y_stride, int mode, int bsize,
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int up_available, int left_available) {
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unsigned char *yabove_row = src - src_stride;
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unsigned char yleft_col[32];
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unsigned char ytop_left = yabove_row[-1];
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int r, c, i;
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for (i = 0; i < bsize; i++) {
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yleft_col[i] = src[i * src_stride - 1];
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}
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/* for Y */
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switch (mode) {
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case DC_PRED: {
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int expected_dc;
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int i;
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int shift;
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int average = 0;
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int log2_bsize_minus_1;
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assert(bsize == 4 || bsize == 8 || bsize == 16 || bsize == 32);
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if (bsize == 4) {
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log2_bsize_minus_1 = 1;
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} else if (bsize == 8) {
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log2_bsize_minus_1 = 2;
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} else if (bsize == 16) {
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log2_bsize_minus_1 = 3;
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} else /* bsize == 32 */ {
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log2_bsize_minus_1 = 4;
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}
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if (up_available || left_available) {
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if (up_available) {
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for (i = 0; i < bsize; i++) {
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average += yabove_row[i];
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}
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}
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if (left_available) {
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for (i = 0; i < bsize; i++) {
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average += yleft_col[i];
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}
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}
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shift = log2_bsize_minus_1 + up_available + left_available;
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expected_dc = (average + (1 << (shift - 1))) >> shift;
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} else {
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expected_dc = 128;
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}
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for (r = 0; r < bsize; r++) {
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vpx_memset(ypred_ptr, expected_dc, bsize);
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ypred_ptr += y_stride;
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}
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}
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break;
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case V_PRED: {
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for (r = 0; r < bsize; r++) {
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memcpy(ypred_ptr, yabove_row, bsize);
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ypred_ptr += y_stride;
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}
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}
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break;
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case H_PRED: {
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for (r = 0; r < bsize; r++) {
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vpx_memset(ypred_ptr, yleft_col[r], bsize);
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ypred_ptr += y_stride;
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}
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}
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break;
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case TM_PRED: {
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for (r = 0; r < bsize; r++) {
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for (c = 0; c < bsize; c++) {
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int pred = yleft_col[r] + yabove_row[ c] - ytop_left;
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if (pred < 0)
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pred = 0;
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if (pred > 255)
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pred = 255;
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ypred_ptr[c] = pred;
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}
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ypred_ptr += y_stride;
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}
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}
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break;
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case D45_PRED: {
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d45_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case D135_PRED: {
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d135_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case D117_PRED: {
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d117_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case D153_PRED: {
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d153_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case D27_PRED: {
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d27_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case D63_PRED: {
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d63_predictor(ypred_ptr, y_stride, bsize, yabove_row, yleft_col);
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}
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break;
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case I8X8_PRED:
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case B_PRED:
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case NEARESTMV:
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case NEARMV:
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case ZEROMV:
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case NEWMV:
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case SPLITMV:
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case MB_MODE_COUNT:
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break;
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}
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}
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void vp9_build_intra_predictors_mby(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_internal(xd->dst.y_buffer, xd->dst.y_stride,
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xd->predictor, 16,
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xd->mode_info_context->mbmi.mode, 16,
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xd->up_available, xd->left_available);
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}
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void vp9_build_intra_predictors_mby_s(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_internal(xd->dst.y_buffer, xd->dst.y_stride,
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xd->dst.y_buffer, xd->dst.y_stride,
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xd->mode_info_context->mbmi.mode, 16,
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xd->up_available, xd->left_available);
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}
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#if CONFIG_SUPERBLOCKS
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void vp9_build_intra_predictors_sby_s(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_internal(xd->dst.y_buffer, xd->dst.y_stride,
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xd->dst.y_buffer, xd->dst.y_stride,
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xd->mode_info_context->mbmi.mode, 32,
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xd->up_available, xd->left_available);
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}
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#endif
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#if CONFIG_COMP_INTRA_PRED
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void vp9_build_comp_intra_predictors_mby(MACROBLOCKD *xd) {
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unsigned char predictor[2][256];
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int i;
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vp9_build_intra_predictors_internal(xd->dst.y_buffer, xd->dst.y_stride,
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predictor[0], 16,
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xd->mode_info_context->mbmi.mode,
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16, xd->up_available,
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xd->left_available);
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vp9_build_intra_predictors_internal(xd->dst.y_buffer, xd->dst.y_stride,
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predictor[1], 16,
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xd->mode_info_context->mbmi.second_mode,
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16, xd->up_available,
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xd->left_available);
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for (i = 0; i < 256; i++) {
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xd->predictor[i] = (predictor[0][i] + predictor[1][i] + 1) >> 1;
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}
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}
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#endif
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void vp9_build_intra_predictors_mbuv_internal(MACROBLOCKD *xd,
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unsigned char *upred_ptr,
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unsigned char *vpred_ptr,
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int uv_stride,
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int mode, int bsize) {
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vp9_build_intra_predictors_internal(xd->dst.u_buffer, xd->dst.uv_stride,
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upred_ptr, uv_stride, mode, bsize,
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xd->up_available, xd->left_available);
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vp9_build_intra_predictors_internal(xd->dst.v_buffer, xd->dst.uv_stride,
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vpred_ptr, uv_stride, mode, bsize,
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xd->up_available, xd->left_available);
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}
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void vp9_build_intra_predictors_mbuv(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_mbuv_internal(xd, &xd->predictor[256],
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&xd->predictor[320], 8,
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xd->mode_info_context->mbmi.uv_mode,
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8);
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}
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void vp9_build_intra_predictors_mbuv_s(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_mbuv_internal(xd, xd->dst.u_buffer,
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xd->dst.v_buffer,
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xd->dst.uv_stride,
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xd->mode_info_context->mbmi.uv_mode,
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8);
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}
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#if CONFIG_SUPERBLOCKS
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void vp9_build_intra_predictors_sbuv_s(MACROBLOCKD *xd) {
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vp9_build_intra_predictors_mbuv_internal(xd, xd->dst.u_buffer,
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xd->dst.v_buffer, xd->dst.uv_stride,
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xd->mode_info_context->mbmi.uv_mode,
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16);
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}
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#endif
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#if CONFIG_COMP_INTRA_PRED
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void vp9_build_comp_intra_predictors_mbuv(MACROBLOCKD *xd) {
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unsigned char predictor[2][2][64];
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int i;
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vp9_build_intra_predictors_mbuv_internal(
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xd, predictor[0][0], predictor[1][0], 8,
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xd->mode_info_context->mbmi.uv_mode, 8);
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vp9_build_intra_predictors_mbuv_internal(
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xd, predictor[0][1], predictor[1][1], 8,
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xd->mode_info_context->mbmi.second_uv_mode, 8);
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for (i = 0; i < 64; i++) {
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xd->predictor[256 + i] = (predictor[0][0][i] + predictor[0][1][i] + 1) >> 1;
|
|
xd->predictor[256 + 64 + i] = (predictor[1][0][i] +
|
|
predictor[1][1][i] + 1) >> 1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void vp9_intra8x8_predict(BLOCKD *xd,
|
|
int mode,
|
|
unsigned char *predictor) {
|
|
vp9_build_intra_predictors_internal(*(xd->base_dst) + xd->dst,
|
|
xd->dst_stride, predictor, 16,
|
|
mode, 8, 1, 1);
|
|
}
|
|
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
void vp9_comp_intra8x8_predict(BLOCKD *xd,
|
|
int mode, int second_mode,
|
|
unsigned char *out_predictor) {
|
|
unsigned char predictor[2][8 * 16];
|
|
int i, j;
|
|
|
|
vp9_intra8x8_predict(xd, mode, predictor[0]);
|
|
vp9_intra8x8_predict(xd, second_mode, predictor[1]);
|
|
|
|
for (i = 0; i < 8 * 16; i += 16) {
|
|
for (j = i; j < i + 8; j++) {
|
|
out_predictor[j] = (predictor[0][j] + predictor[1][j] + 1) >> 1;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void vp9_intra_uv4x4_predict(BLOCKD *xd,
|
|
int mode,
|
|
unsigned char *predictor) {
|
|
vp9_build_intra_predictors_internal(*(xd->base_dst) + xd->dst,
|
|
xd->dst_stride, predictor, 8,
|
|
mode, 4, 1, 1);
|
|
}
|
|
|
|
#if CONFIG_COMP_INTRA_PRED
|
|
void vp9_comp_intra_uv4x4_predict(BLOCKD *xd,
|
|
int mode, int mode2,
|
|
unsigned char *out_predictor) {
|
|
unsigned char predictor[2][8 * 4];
|
|
int i, j;
|
|
|
|
vp9_intra_uv4x4_predict(xd, mode, predictor[0]);
|
|
vp9_intra_uv4x4_predict(xd, mode2, predictor[1]);
|
|
|
|
for (i = 0; i < 4 * 8; i += 8) {
|
|
for (j = i; j < i + 4; j++) {
|
|
out_predictor[j] = (predictor[0][j] + predictor[1][j] + 1) >> 1;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* TODO: try different ways of use Y-UV mode correlation
|
|
Current code assumes that a uv 4x4 block use same mode
|
|
as corresponding Y 8x8 area
|
|
*/
|