619 lines
22 KiB
C
619 lines
22 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_config.h"
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#include "vp9_rtcd.h"
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#include "vp9/common/vp9_reconintra.h"
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#include "vpx_mem/vpx_mem.h"
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static void d27_predictor(uint8_t *ypred_ptr, int y_stride,
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int bw, int bh,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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// first column
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for (r = 0; r < bh - 1; ++r) {
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ypred_ptr[r * y_stride] = ROUND_POWER_OF_TWO(yleft_col[r] +
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yleft_col[r + 1], 1);
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}
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ypred_ptr[(bh - 1) * y_stride] = yleft_col[bh-1];
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ypred_ptr++;
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// second column
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for (r = 0; r < bh - 2; ++r) {
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ypred_ptr[r * y_stride] = ROUND_POWER_OF_TWO(yleft_col[r] +
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yleft_col[r + 1] * 2 +
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yleft_col[r + 2], 2);
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}
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ypred_ptr[(bh - 2) * y_stride] = ROUND_POWER_OF_TWO(yleft_col[bh - 2] +
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yleft_col[bh - 1] * 3,
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2);
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ypred_ptr[(bh - 1) * y_stride] = yleft_col[bh-1];
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ypred_ptr++;
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// rest of last row
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for (c = 0; c < bw - 2; ++c) {
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ypred_ptr[(bh - 1) * y_stride + c] = yleft_col[bh-1];
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}
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for (r = bh - 2; r >= 0; --r) {
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for (c = 0; c < bw - 2; ++c) {
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ypred_ptr[r * y_stride + c] = ypred_ptr[(r + 1) * y_stride + c - 2];
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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,
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int bw, int bh,
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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 < bh; ++r) {
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for (c = 0; c < bw; ++c) {
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if (r & 1) {
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[r/2 + c] +
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yabove_row[r/2 + c + 1] * 2 +
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yabove_row[r/2 + c + 2], 2);
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} else {
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ypred_ptr[c] =ROUND_POWER_OF_TWO(yabove_row[r/2 + c] +
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yabove_row[r/2+ c + 1], 1);
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}
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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 d45_predictor(uint8_t *ypred_ptr, int y_stride,
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int bw, int bh,
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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 < bh; ++r) {
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for (c = 0; c < bw; ++c) {
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if (r + c + 2 < bw * 2)
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[r + c] +
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yabove_row[r + c + 1] * 2 +
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yabove_row[r + c + 2], 2);
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else
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ypred_ptr[c] = yabove_row[bw * 2 - 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 d117_predictor(uint8_t *ypred_ptr, int y_stride,
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int bw, int bh,
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uint8_t *yabove_row, uint8_t *yleft_col) {
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int r, c;
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// first row
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for (c = 0; c < bw; c++)
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[c - 1] + yabove_row[c], 1);
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ypred_ptr += y_stride;
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// second row
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ypred_ptr[0] = ROUND_POWER_OF_TWO(yleft_col[0] +
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yabove_row[-1] * 2 +
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yabove_row[0], 2);
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for (c = 1; c < bw; c++)
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[c - 2] +
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yabove_row[c - 1] * 2 +
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yabove_row[c], 2);
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ypred_ptr += y_stride;
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// the rest of first col
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ypred_ptr[0] = ROUND_POWER_OF_TWO(yabove_row[-1] +
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yleft_col[0] * 2 +
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yleft_col[1], 2);
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for (r = 3; r < bh; ++r)
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ypred_ptr[(r-2) * y_stride] = ROUND_POWER_OF_TWO(yleft_col[r - 3] +
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yleft_col[r - 2] * 2 +
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yleft_col[r - 1], 2);
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// the rest of the block
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for (r = 2; r < bh; ++r) {
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for (c = 1; c < bw; 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,
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int bw, int bh,
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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] = ROUND_POWER_OF_TWO(yleft_col[0] +
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yabove_row[-1] * 2 +
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yabove_row[0], 2);
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for (c = 1; c < bw; c++)
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[c - 2] +
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yabove_row[c - 1] * 2 +
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yabove_row[c], 2);
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ypred_ptr[y_stride] = ROUND_POWER_OF_TWO(yabove_row[-1] +
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yleft_col[0] * 2 +
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yleft_col[1], 2);
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for (r = 2; r < bh - 1; ++r)
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ypred_ptr[r * y_stride] = ROUND_POWER_OF_TWO(yleft_col[r - 2] +
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yleft_col[r - 1] * 2 +
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yleft_col[r + 1], 2);
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ypred_ptr[(bh - 1) * y_stride] = ROUND_POWER_OF_TWO(yleft_col[bh - 2] +
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yleft_col[bh - 1] * 3,
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2);
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ypred_ptr += y_stride;
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for (r = 1; r < bh; ++r) {
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for (c = 1; c < bw; c++)
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ypred_ptr[c] = ypred_ptr[-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 d153_predictor(uint8_t *ypred_ptr,
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int y_stride,
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int bw, int bh,
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uint8_t *yabove_row,
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uint8_t *yleft_col) {
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int r, c;
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ypred_ptr[0] = ROUND_POWER_OF_TWO(yabove_row[-1] + yleft_col[0], 1);
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for (r = 1; r < bh; r++)
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ypred_ptr[r * y_stride] =
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ROUND_POWER_OF_TWO(yleft_col[r - 1] + yleft_col[r], 1);
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ypred_ptr++;
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ypred_ptr[0] = ROUND_POWER_OF_TWO(yleft_col[0] +
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yabove_row[-1] * 2 +
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yabove_row[0], 2);
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ypred_ptr[y_stride] = ROUND_POWER_OF_TWO(yabove_row[-1] +
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yleft_col[0] * 2 +
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yleft_col[1], 2);
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for (r = 2; r < bh; r++)
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ypred_ptr[r * y_stride] = ROUND_POWER_OF_TWO(yleft_col[r - 2] +
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yleft_col[r - 1] * 2 +
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yleft_col[r], 2);
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ypred_ptr++;
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for (c = 0; c < bw - 2; c++)
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ypred_ptr[c] = ROUND_POWER_OF_TWO(yabove_row[c - 1] +
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yabove_row[c] * 2 +
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yabove_row[c + 1], 2);
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ypred_ptr += y_stride;
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for (r = 1; r < bh; ++r) {
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for (c = 0; c < bw - 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_build_intra_predictors(uint8_t *src, int src_stride,
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uint8_t *ypred_ptr,
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int y_stride, int mode,
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int bw, int bh,
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int up_available, int left_available,
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int right_available) {
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int r, c, i;
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uint8_t yleft_col[64], yabove_data[129], ytop_left;
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uint8_t *yabove_row = yabove_data + 1;
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// 127 127 127 .. 127 127 127 127 127 127
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// 129 A B .. Y Z
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// 129 C D .. W X
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// 129 E F .. U V
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// 129 G H .. S T T T T T
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// ..
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if (left_available) {
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for (i = 0; i < bh; i++)
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yleft_col[i] = src[i * src_stride - 1];
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} else {
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vpx_memset(yleft_col, 129, bh);
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}
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if (up_available) {
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uint8_t *yabove_ptr = src - src_stride;
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vpx_memcpy(yabove_row, yabove_ptr, bw);
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if (bw == 4 && right_available)
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vpx_memcpy(yabove_row + bw, yabove_ptr + bw, bw);
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else
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vpx_memset(yabove_row + bw, yabove_row[bw -1], bw);
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ytop_left = left_available ? yabove_ptr[-1] : 129;
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} else {
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vpx_memset(yabove_row, 127, bw * 2);
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ytop_left = 127;
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}
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yabove_row[-1] = ytop_left;
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switch (mode) {
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case DC_PRED: {
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int i;
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int expected_dc = 128;
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int average = 0;
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int count = 0;
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if (up_available || left_available) {
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if (up_available) {
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for (i = 0; i < bw; i++)
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average += yabove_row[i];
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count += bw;
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}
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if (left_available) {
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for (i = 0; i < bh; i++)
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average += yleft_col[i];
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count += bh;
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}
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expected_dc = (average + (count >> 1)) / count;
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}
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for (r = 0; r < bh; r++) {
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vpx_memset(ypred_ptr, expected_dc, bw);
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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 < bh; r++) {
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vpx_memcpy(ypred_ptr, yabove_row, bw);
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ypred_ptr += y_stride;
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}
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break;
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case H_PRED:
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for (r = 0; r < bh; r++) {
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vpx_memset(ypred_ptr, yleft_col[r], bw);
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ypred_ptr += y_stride;
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}
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break;
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case TM_PRED:
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for (r = 0; r < bh; r++) {
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for (c = 0; c < bw; c++)
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ypred_ptr[c] = clip_pixel(yleft_col[r] + yabove_row[c] - ytop_left);
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ypred_ptr += y_stride;
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}
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break;
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case D45_PRED:
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case D135_PRED:
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case D117_PRED:
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case D153_PRED:
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case D27_PRED:
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case D63_PRED:
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if (bw == bh) {
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switch (mode) {
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case D45_PRED:
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d45_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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case D135_PRED:
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d135_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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case D117_PRED:
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d117_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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case D153_PRED:
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d153_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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case D27_PRED:
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d27_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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case D63_PRED:
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d63_predictor(ypred_ptr, y_stride, bw, bh, yabove_row, yleft_col);
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break;
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default:
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assert(0);
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}
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} else if (bw > bh) {
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uint8_t pred[64*64];
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vpx_memset(yleft_col + bh, yleft_col[bh - 1], bw - bh);
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switch (mode) {
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case D45_PRED:
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d45_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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case D135_PRED:
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d135_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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case D117_PRED:
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d117_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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case D153_PRED:
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d153_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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case D27_PRED:
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d27_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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case D63_PRED:
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d63_predictor(pred, 64, bw, bw, yabove_row, yleft_col);
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break;
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default:
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assert(0);
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}
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for (i = 0; i < bh; i++)
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vpx_memcpy(ypred_ptr + y_stride * i, pred + i * 64, bw);
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} else {
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uint8_t pred[64 * 64];
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vpx_memset(yabove_row + bw * 2, yabove_row[bw * 2 - 1], (bh - bw) * 2);
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switch (mode) {
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case D45_PRED:
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d45_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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case D135_PRED:
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d135_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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case D117_PRED:
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d117_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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case D153_PRED:
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d153_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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case D27_PRED:
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d27_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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case D63_PRED:
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d63_predictor(pred, 64, bh, bh, yabove_row, yleft_col);
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break;
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default:
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assert(0);
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}
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for (i = 0; i < bh; i++)
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vpx_memcpy(ypred_ptr + y_stride * i, pred + i * 64, bw);
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}
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break;
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default:
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break;
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}
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}
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#if CONFIG_COMP_INTERINTRA_PRED
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static void combine_interintra(MB_PREDICTION_MODE mode,
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uint8_t *interpred,
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int interstride,
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uint8_t *intrapred,
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int intrastride,
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int bw, int bh) {
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// TODO(debargha): Explore different ways of combining predictors
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// or designing the tables below
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static const int scale_bits = 8;
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static const int scale_max = 256; // 1 << scale_bits;
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static const int scale_round = 127; // (1 << (scale_bits - 1));
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// This table is a function A + B*exp(-kx), where x is hor. index
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static const int weights1d[64] = {
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128, 125, 122, 119, 116, 114, 111, 109,
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107, 105, 103, 101, 99, 97, 96, 94,
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93, 91, 90, 89, 88, 86, 85, 84,
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83, 82, 81, 81, 80, 79, 78, 78,
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77, 76, 76, 75, 75, 74, 74, 73,
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73, 72, 72, 71, 71, 71, 70, 70,
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70, 70, 69, 69, 69, 69, 68, 68,
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68, 68, 68, 67, 67, 67, 67, 67,
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};
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int size = MAX(bw, bh);
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int size_scale = (size >= 64 ? 1:
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size == 32 ? 2 :
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size == 16 ? 4 :
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size == 8 ? 8 : 16);
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int i, j;
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switch (mode) {
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case V_PRED:
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for (i = 0; i < bh; ++i) {
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for (j = 0; j < bw; ++j) {
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int k = i * interstride + j;
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int scale = weights1d[i * size_scale];
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interpred[k] =
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((scale_max - scale) * interpred[k] +
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scale * intrapred[i * intrastride + j] + scale_round)
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>> scale_bits;
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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 (i = 0; i < bh; ++i) {
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for (j = 0; j < bw; ++j) {
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int k = i * interstride + j;
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int scale = weights1d[j * size_scale];
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interpred[k] =
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((scale_max - scale) * interpred[k] +
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scale * intrapred[i * intrastride + j] + scale_round)
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>> scale_bits;
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}
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}
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break;
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case D63_PRED:
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case D117_PRED:
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for (i = 0; i < bh; ++i) {
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for (j = 0; j < bw; ++j) {
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int k = i * interstride + j;
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int scale = (weights1d[i * size_scale] * 3 +
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weights1d[j * size_scale]) >> 2;
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interpred[k] =
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((scale_max - scale) * interpred[k] +
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scale * intrapred[i * intrastride + j] + scale_round)
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>> scale_bits;
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}
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}
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break;
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case D27_PRED:
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case D153_PRED:
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for (i = 0; i < bh; ++i) {
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for (j = 0; j < bw; ++j) {
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int k = i * interstride + j;
|
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int scale = (weights1d[j * size_scale] * 3 +
|
|
weights1d[i * size_scale]) >> 2;
|
|
interpred[k] =
|
|
((scale_max - scale) * interpred[k] +
|
|
scale * intrapred[i * intrastride + j] + scale_round)
|
|
>> scale_bits;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case D135_PRED:
|
|
for (i = 0; i < bh; ++i) {
|
|
for (j = 0; j < bw; ++j) {
|
|
int k = i * interstride + j;
|
|
int scale = weights1d[(i < j ? i : j) * size_scale];
|
|
interpred[k] =
|
|
((scale_max - scale) * interpred[k] +
|
|
scale * intrapred[i * intrastride + j] + scale_round)
|
|
>> scale_bits;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case D45_PRED:
|
|
for (i = 0; i < bh; ++i) {
|
|
for (j = 0; j < bw; ++j) {
|
|
int k = i * interstride + j;
|
|
int scale = (weights1d[i * size_scale] +
|
|
weights1d[j * size_scale]) >> 1;
|
|
interpred[k] =
|
|
((scale_max - scale) * interpred[k] +
|
|
scale * intrapred[i * intrastride + j] + scale_round)
|
|
>> scale_bits;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case TM_PRED:
|
|
case DC_PRED:
|
|
default:
|
|
// simple average
|
|
for (i = 0; i < bh; ++i) {
|
|
for (j = 0; j < bw; ++j) {
|
|
int k = i * interstride + j;
|
|
interpred[k] = (interpred[k] + intrapred[i * intrastride + j]) >> 1;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void vp9_build_interintra_predictors(MACROBLOCKD *xd,
|
|
uint8_t *ypred,
|
|
uint8_t *upred,
|
|
uint8_t *vpred,
|
|
int ystride, int uvstride,
|
|
BLOCK_SIZE_TYPE bsize) {
|
|
vp9_build_interintra_predictors_sby(xd, ypred, ystride, bsize);
|
|
vp9_build_interintra_predictors_sbuv(xd, upred, vpred, uvstride, bsize);
|
|
}
|
|
|
|
void vp9_build_interintra_predictors_sby(MACROBLOCKD *xd,
|
|
uint8_t *ypred,
|
|
int ystride,
|
|
BLOCK_SIZE_TYPE bsize) {
|
|
int bwl = mi_width_log2(bsize), bw = MI_SIZE << bwl;
|
|
int bhl = mi_height_log2(bsize), bh = MI_SIZE << bhl;
|
|
uint8_t intrapredictor[4096];
|
|
vp9_build_intra_predictors(
|
|
xd->plane[0].dst.buf, xd->plane[0].dst.stride,
|
|
intrapredictor, bw,
|
|
xd->mode_info_context->mbmi.interintra_mode, bw, bh,
|
|
xd->up_available, xd->left_available, xd->right_available);
|
|
combine_interintra(xd->mode_info_context->mbmi.interintra_mode,
|
|
ypred, ystride, intrapredictor, bw, bw, bh);
|
|
}
|
|
|
|
void vp9_build_interintra_predictors_sbuv(MACROBLOCKD *xd,
|
|
uint8_t *upred,
|
|
uint8_t *vpred,
|
|
int uvstride,
|
|
BLOCK_SIZE_TYPE bsize) {
|
|
int bwl = mi_width_log2(bsize), bw = MI_UV_SIZE << bwl;
|
|
int bhl = mi_height_log2(bsize), bh = MI_UV_SIZE << bhl;
|
|
uint8_t uintrapredictor[1024];
|
|
uint8_t vintrapredictor[1024];
|
|
vp9_build_intra_predictors(
|
|
xd->plane[1].dst.buf, xd->plane[1].dst.stride,
|
|
uintrapredictor, bw,
|
|
xd->mode_info_context->mbmi.interintra_uv_mode, bw, bh,
|
|
xd->up_available, xd->left_available, xd->right_available);
|
|
vp9_build_intra_predictors(
|
|
xd->plane[2].dst.buf, xd->plane[1].dst.stride,
|
|
vintrapredictor, bw,
|
|
xd->mode_info_context->mbmi.interintra_uv_mode, bw, bh,
|
|
xd->up_available, xd->left_available, xd->right_available);
|
|
combine_interintra(xd->mode_info_context->mbmi.interintra_uv_mode,
|
|
upred, uvstride, uintrapredictor, bw, bw, bh);
|
|
combine_interintra(xd->mode_info_context->mbmi.interintra_uv_mode,
|
|
vpred, uvstride, vintrapredictor, bw, bw, bh);
|
|
}
|
|
#endif // CONFIG_COMP_INTERINTRA_PRED
|
|
|
|
void vp9_build_intra_predictors_sby_s(MACROBLOCKD *xd,
|
|
BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = b_width_log2(bsize), bw = 4 << bwl;
|
|
const int bhl = b_height_log2(bsize), bh = 4 << bhl;
|
|
|
|
vp9_build_intra_predictors(xd->plane[0].dst.buf, xd->plane[0].dst.stride,
|
|
xd->plane[0].dst.buf, xd->plane[0].dst.stride,
|
|
xd->mode_info_context->mbmi.mode,
|
|
bw, bh,
|
|
xd->up_available, xd->left_available,
|
|
xd->right_available);
|
|
}
|
|
|
|
void vp9_build_intra_predictors_sbuv_s(MACROBLOCKD *xd,
|
|
BLOCK_SIZE_TYPE bsize) {
|
|
const int bwl = b_width_log2(bsize), bw = 2 << bwl;
|
|
const int bhl = b_height_log2(bsize), bh = 2 << bhl;
|
|
|
|
vp9_build_intra_predictors(xd->plane[1].dst.buf, xd->plane[1].dst.stride,
|
|
xd->plane[1].dst.buf, xd->plane[1].dst.stride,
|
|
xd->mode_info_context->mbmi.uv_mode,
|
|
bw, bh, xd->up_available,
|
|
xd->left_available, xd->right_available);
|
|
vp9_build_intra_predictors(xd->plane[2].dst.buf, xd->plane[1].dst.stride,
|
|
xd->plane[2].dst.buf, xd->plane[1].dst.stride,
|
|
xd->mode_info_context->mbmi.uv_mode,
|
|
bw, bh, xd->up_available,
|
|
xd->left_available, xd->right_available);
|
|
}
|
|
|
|
void vp9_intra8x8_predict(MACROBLOCKD *xd,
|
|
int block4x4_idx,
|
|
int mode,
|
|
uint8_t *predictor, int pre_stride) {
|
|
const int block_idx = (block4x4_idx >> 2) | !!(block4x4_idx & 2);
|
|
const int have_top = (block_idx >> 1) || xd->up_available;
|
|
const int have_left = (block_idx & 1) || xd->left_available;
|
|
const int have_right = !(block_idx & 1) || xd->right_available;
|
|
|
|
vp9_build_intra_predictors(predictor, pre_stride,
|
|
predictor, pre_stride,
|
|
mode, 8, 8, have_top, have_left,
|
|
have_right);
|
|
}
|
|
#if !CONFIG_NEWBINTRAMODES
|
|
void vp9_intra4x4_predict(MACROBLOCKD *xd,
|
|
int block_idx,
|
|
int mode,
|
|
uint8_t *predictor, int pre_stride) {
|
|
const int have_top = (block_idx >> 2) || xd->up_available;
|
|
const int have_left = (block_idx & 3) || xd->left_available;
|
|
const int have_right = ((block_idx & 3) != 3);
|
|
|
|
vp9_build_intra_predictors(predictor, pre_stride,
|
|
predictor, pre_stride,
|
|
mode, 4, 4, have_top, have_left,
|
|
have_right);
|
|
}
|
|
#endif
|
|
void vp9_intra_uv4x4_predict(MACROBLOCKD *xd,
|
|
int block4x4_idx,
|
|
int mode,
|
|
uint8_t *predictor, int pre_stride) {
|
|
const int block_idx = block4x4_idx & 3;
|
|
const int have_top = (block_idx >> 1) || xd->up_available;
|
|
const int have_left = (block_idx & 1) || xd->left_available;
|
|
const int have_right = !(block_idx & 1);
|
|
|
|
vp9_build_intra_predictors(predictor, pre_stride,
|
|
predictor, pre_stride,
|
|
mode, 4, 4, have_top, have_left,
|
|
have_right);
|
|
}
|