| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <assert.h> |
| |
| #include "aom/aom_integer.h" |
| #include "aom_ports/mem.h" |
| #include "aom_dsp/blend.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| #include "config/aom_dsp_rtcd.h" |
| |
| // Blending with alpha mask. Mask values come from the range [0, 64], |
| // as described for AOM_BLEND_A64 in aom_dsp/blend.h. src0 or src1 can |
| // be the same as dst, or dst can be different from both sources. |
| |
| // NOTE(rachelbarker): The input and output of aom_blend_a64_d16_mask_c() are |
| // in a higher intermediate precision, and will later be rounded down to pixel |
| // precision. |
| // Thus, in order to avoid double-rounding, we want to use normal right shifts |
| // within this function, not ROUND_POWER_OF_TWO. |
| // This works because of the identity: |
| // ROUND_POWER_OF_TWO(x >> y, z) == ROUND_POWER_OF_TWO(x, y+z) |
| // |
| // In contrast, the output of the non-d16 functions will not be further rounded, |
| // so we *should* use ROUND_POWER_OF_TWO there. |
| |
| void aom_lowbd_blend_a64_d16_mask_c( |
| uint8_t *dst, uint32_t dst_stride, const CONV_BUF_TYPE *src0, |
| uint32_t src0_stride, const CONV_BUF_TYPE *src1, uint32_t src1_stride, |
| const uint8_t *mask, uint32_t mask_stride, int w, int h, int subw, int subh, |
| ConvolveParams *conv_params) { |
| int i, j; |
| const int bd = 8; |
| const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; |
| const int round_offset = (1 << (offset_bits - conv_params->round_1)) + |
| (1 << (offset_bits - conv_params->round_1 - 1)); |
| const int round_bits = |
| 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; |
| |
| assert(IMPLIES((void *)src0 == dst, src0_stride == dst_stride)); |
| assert(IMPLIES((void *)src1 == dst, src1_stride == dst_stride)); |
| |
| assert(h >= 4); |
| assert(w >= 4); |
| assert(IS_POWER_OF_TWO(h)); |
| assert(IS_POWER_OF_TWO(w)); |
| |
| if (subw == 0 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = mask[i * mask_stride + j]; |
| res = ((m * (int32_t)src0[i * src0_stride + j] + |
| (AOM_BLEND_A64_MAX_ALPHA - m) * |
| (int32_t)src1[i * src1_stride + j]) >> |
| AOM_BLEND_A64_ROUND_BITS); |
| res -= round_offset; |
| dst[i * dst_stride + j] = |
| clip_pixel(ROUND_POWER_OF_TWO(res, round_bits)); |
| } |
| } |
| } else if (subw == 1 && subh == 1) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = ROUND_POWER_OF_TWO( |
| mask[(2 * i) * mask_stride + (2 * j)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j)] + |
| mask[(2 * i) * mask_stride + (2 * j + 1)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j + 1)], |
| 2); |
| res = ((m * (int32_t)src0[i * src0_stride + j] + |
| (AOM_BLEND_A64_MAX_ALPHA - m) * |
| (int32_t)src1[i * src1_stride + j]) >> |
| AOM_BLEND_A64_ROUND_BITS); |
| res -= round_offset; |
| dst[i * dst_stride + j] = |
| clip_pixel(ROUND_POWER_OF_TWO(res, round_bits)); |
| } |
| } |
| } else if (subw == 1 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = AOM_BLEND_AVG(mask[i * mask_stride + (2 * j)], |
| mask[i * mask_stride + (2 * j + 1)]); |
| res = ((m * (int32_t)src0[i * src0_stride + j] + |
| (AOM_BLEND_A64_MAX_ALPHA - m) * |
| (int32_t)src1[i * src1_stride + j]) >> |
| AOM_BLEND_A64_ROUND_BITS); |
| res -= round_offset; |
| dst[i * dst_stride + j] = |
| clip_pixel(ROUND_POWER_OF_TWO(res, round_bits)); |
| } |
| } |
| } else { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = AOM_BLEND_AVG(mask[(2 * i) * mask_stride + j], |
| mask[(2 * i + 1) * mask_stride + j]); |
| res = ((int32_t)(m * (int32_t)src0[i * src0_stride + j] + |
| (AOM_BLEND_A64_MAX_ALPHA - m) * |
| (int32_t)src1[i * src1_stride + j]) >> |
| AOM_BLEND_A64_ROUND_BITS); |
| res -= round_offset; |
| dst[i * dst_stride + j] = |
| clip_pixel(ROUND_POWER_OF_TWO(res, round_bits)); |
| } |
| } |
| } |
| } |
| |
| #if CONFIG_AV1_HIGHBITDEPTH |
| void aom_highbd_blend_a64_d16_mask_c( |
| uint8_t *dst_8, uint32_t dst_stride, const CONV_BUF_TYPE *src0, |
| uint32_t src0_stride, const CONV_BUF_TYPE *src1, uint32_t src1_stride, |
| const uint8_t *mask, uint32_t mask_stride, int w, int h, int subw, int subh, |
| ConvolveParams *conv_params, const int bd) { |
| const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0; |
| const int round_offset = (1 << (offset_bits - conv_params->round_1)) + |
| (1 << (offset_bits - conv_params->round_1 - 1)); |
| const int round_bits = |
| 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1; |
| uint16_t *dst = CONVERT_TO_SHORTPTR(dst_8); |
| |
| assert(IMPLIES(src0 == dst, src0_stride == dst_stride)); |
| assert(IMPLIES(src1 == dst, src1_stride == dst_stride)); |
| |
| assert(h >= 1); |
| assert(w >= 1); |
| assert(IS_POWER_OF_TWO(h)); |
| assert(IS_POWER_OF_TWO(w)); |
| |
| // excerpt from clip_pixel_highbd() |
| // set saturation_value to (1 << bd) - 1 |
| unsigned int saturation_value; |
| switch (bd) { |
| case 8: |
| default: saturation_value = 255; break; |
| case 10: saturation_value = 1023; break; |
| case 12: saturation_value = 4095; break; |
| } |
| |
| if (subw == 0 && subh == 0) { |
| for (int i = 0; i < h; ++i) { |
| for (int j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = mask[j]; |
| res = ((m * src0[j] + (AOM_BLEND_A64_MAX_ALPHA - m) * src1[j]) >> |
| AOM_BLEND_A64_ROUND_BITS); |
| res -= round_offset; |
| unsigned int v = negative_to_zero(ROUND_POWER_OF_TWO(res, round_bits)); |
| dst[j] = AOMMIN(v, saturation_value); |
| } |
| mask += mask_stride; |
| src0 += src0_stride; |
| src1 += src1_stride; |
| dst += dst_stride; |
| } |
| } else if (subw == 1 && subh == 1) { |
| for (int i = 0; i < h; ++i) { |
| for (int j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = ROUND_POWER_OF_TWO( |
| mask[2 * j] + mask[mask_stride + 2 * j] + mask[2 * j + 1] + |
| mask[mask_stride + 2 * j + 1], |
| 2); |
| res = (m * src0[j] + (AOM_BLEND_A64_MAX_ALPHA - m) * src1[j]) >> |
| AOM_BLEND_A64_ROUND_BITS; |
| res -= round_offset; |
| unsigned int v = negative_to_zero(ROUND_POWER_OF_TWO(res, round_bits)); |
| dst[j] = AOMMIN(v, saturation_value); |
| } |
| mask += 2 * mask_stride; |
| src0 += src0_stride; |
| src1 += src1_stride; |
| dst += dst_stride; |
| } |
| } else if (subw == 1 && subh == 0) { |
| for (int i = 0; i < h; ++i) { |
| for (int j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = AOM_BLEND_AVG(mask[2 * j], mask[2 * j + 1]); |
| res = (m * src0[j] + (AOM_BLEND_A64_MAX_ALPHA - m) * src1[j]) >> |
| AOM_BLEND_A64_ROUND_BITS; |
| res -= round_offset; |
| unsigned int v = negative_to_zero(ROUND_POWER_OF_TWO(res, round_bits)); |
| dst[j] = AOMMIN(v, saturation_value); |
| } |
| mask += mask_stride; |
| src0 += src0_stride; |
| src1 += src1_stride; |
| dst += dst_stride; |
| } |
| } else { |
| for (int i = 0; i < h; ++i) { |
| for (int j = 0; j < w; ++j) { |
| int32_t res; |
| const int m = AOM_BLEND_AVG(mask[j], mask[mask_stride + j]); |
| res = (m * src0[j] + (AOM_BLEND_A64_MAX_ALPHA - m) * src1[j]) >> |
| AOM_BLEND_A64_ROUND_BITS; |
| res -= round_offset; |
| unsigned int v = negative_to_zero(ROUND_POWER_OF_TWO(res, round_bits)); |
| dst[j] = AOMMIN(v, saturation_value); |
| } |
| mask += 2 * mask_stride; |
| src0 += src0_stride; |
| src1 += src1_stride; |
| dst += dst_stride; |
| } |
| } |
| } |
| #endif // CONFIG_AV1_HIGHBITDEPTH |
| |
| // Blending with alpha mask. Mask values come from the range [0, 64], |
| // as described for AOM_BLEND_A64 in aom_dsp/blend.h. src0 or src1 can |
| // be the same as dst, or dst can be different from both sources. |
| |
| void aom_blend_a64_mask_c(uint8_t *dst, uint32_t dst_stride, |
| const uint8_t *src0, uint32_t src0_stride, |
| const uint8_t *src1, uint32_t src1_stride, |
| const uint8_t *mask, uint32_t mask_stride, int w, |
| int h, int subw, int subh) { |
| int i, j; |
| |
| assert(IMPLIES(src0 == dst, src0_stride == dst_stride)); |
| assert(IMPLIES(src1 == dst, src1_stride == dst_stride)); |
| |
| assert(h >= 1); |
| assert(w >= 1); |
| assert(IS_POWER_OF_TWO(h)); |
| assert(IS_POWER_OF_TWO(w)); |
| |
| if (subw == 0 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = mask[i * mask_stride + j]; |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else if (subw == 1 && subh == 1) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = ROUND_POWER_OF_TWO( |
| mask[(2 * i) * mask_stride + (2 * j)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j)] + |
| mask[(2 * i) * mask_stride + (2 * j + 1)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j + 1)], |
| 2); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else if (subw == 1 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = AOM_BLEND_AVG(mask[i * mask_stride + (2 * j)], |
| mask[i * mask_stride + (2 * j + 1)]); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = AOM_BLEND_AVG(mask[(2 * i) * mask_stride + j], |
| mask[(2 * i + 1) * mask_stride + j]); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } |
| } |
| |
| #if CONFIG_AV1_HIGHBITDEPTH |
| void aom_highbd_blend_a64_mask_c(uint8_t *dst_8, uint32_t dst_stride, |
| const uint8_t *src0_8, uint32_t src0_stride, |
| const uint8_t *src1_8, uint32_t src1_stride, |
| const uint8_t *mask, uint32_t mask_stride, |
| int w, int h, int subw, int subh, int bd) { |
| int i, j; |
| uint16_t *dst = CONVERT_TO_SHORTPTR(dst_8); |
| const uint16_t *src0 = CONVERT_TO_SHORTPTR(src0_8); |
| const uint16_t *src1 = CONVERT_TO_SHORTPTR(src1_8); |
| (void)bd; |
| |
| assert(IMPLIES(src0 == dst, src0_stride == dst_stride)); |
| assert(IMPLIES(src1 == dst, src1_stride == dst_stride)); |
| |
| assert(h >= 1); |
| assert(w >= 1); |
| assert(IS_POWER_OF_TWO(h)); |
| assert(IS_POWER_OF_TWO(w)); |
| |
| assert(bd == 8 || bd == 10 || bd == 12); |
| |
| if (subw == 0 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = mask[i * mask_stride + j]; |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else if (subw == 1 && subh == 1) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = ROUND_POWER_OF_TWO( |
| mask[(2 * i) * mask_stride + (2 * j)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j)] + |
| mask[(2 * i) * mask_stride + (2 * j + 1)] + |
| mask[(2 * i + 1) * mask_stride + (2 * j + 1)], |
| 2); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else if (subw == 1 && subh == 0) { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = AOM_BLEND_AVG(mask[i * mask_stride + (2 * j)], |
| mask[i * mask_stride + (2 * j + 1)]); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } else { |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; ++j) { |
| const int m = AOM_BLEND_AVG(mask[(2 * i) * mask_stride + j], |
| mask[(2 * i + 1) * mask_stride + j]); |
| dst[i * dst_stride + j] = AOM_BLEND_A64(m, src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } |
| } |
| #endif // CONFIG_AV1_HIGHBITDEPTH |
