423 lines
15 KiB
C
423 lines
15 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 "vp9/common/vp9_onyxc_int.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; ++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 += 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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void vp9_build_intra_predictors_sby_s(MACROBLOCKD *xd,
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BLOCK_SIZE_TYPE bsize) {
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const struct macroblockd_plane* const pd = &xd->plane[0];
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const int bw = plane_block_width(bsize, pd);
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const int bh = plane_block_height(bsize, pd);
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vp9_build_intra_predictors(pd->dst.buf, pd->dst.stride,
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pd->dst.buf, pd->dst.stride,
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xd->mode_info_context->mbmi.mode,
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bw, bh, xd->up_available, xd->left_available,
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0 /*xd->right_available*/);
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}
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void vp9_build_intra_predictors_sbuv_s(MACROBLOCKD *xd,
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BLOCK_SIZE_TYPE bsize) {
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const int bwl = b_width_log2(bsize), bw = 2 << bwl;
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const int bhl = b_height_log2(bsize), bh = 2 << bhl;
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vp9_build_intra_predictors(xd->plane[1].dst.buf, xd->plane[1].dst.stride,
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xd->plane[1].dst.buf, xd->plane[1].dst.stride,
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xd->mode_info_context->mbmi.uv_mode,
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bw, bh, xd->up_available,
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xd->left_available, 0 /*xd->right_available*/);
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vp9_build_intra_predictors(xd->plane[2].dst.buf, xd->plane[1].dst.stride,
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xd->plane[2].dst.buf, xd->plane[1].dst.stride,
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xd->mode_info_context->mbmi.uv_mode,
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bw, bh, xd->up_available,
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xd->left_available, 0 /*xd->right_available*/);
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}
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void vp9_predict_intra_block(MACROBLOCKD *xd,
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int block_idx,
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int bwl_in,
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TX_SIZE tx_size,
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int mode,
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uint8_t *predictor, int pre_stride) {
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const int bwl = bwl_in - tx_size;
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const int wmask = (1 << bwl) - 1;
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const int have_top = (block_idx >> bwl) || xd->up_available;
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const int have_left = (block_idx & wmask) || xd->left_available;
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const int have_right = ((block_idx & wmask) != wmask);
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const int txfm_block_size = 4 << tx_size;
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assert(bwl >= 0);
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vp9_build_intra_predictors(predictor, pre_stride,
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predictor, pre_stride,
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mode,
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txfm_block_size,
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txfm_block_size,
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have_top, have_left,
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have_right);
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}
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void vp9_intra4x4_predict(MACROBLOCKD *xd,
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int block_idx,
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BLOCK_SIZE_TYPE bsize,
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int mode,
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uint8_t *predictor, int pre_stride) {
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vp9_predict_intra_block(xd, block_idx, b_width_log2(bsize), TX_4X4,
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mode, predictor, pre_stride);
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}
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