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