| /* |
| * Copyright (c) 2016 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 <assert.h> |
| |
| #include "vpx/vpx_integer.h" |
| #include "vpx_ports/mem.h" |
| #include "vpx_dsp/blend.h" |
| #include "vpx_dsp/vpx_dsp_common.h" |
| |
| #include "./vpx_dsp_rtcd.h" |
| |
| // Blending with alpha mask. Mask values come from the range [0, 64], |
| // as described for VPX_BLEND_A64 in vpx_dsp/blned.h. src0 or src1 can |
| // be the same as dst, or dst can be different from both sources. |
| |
| void vpx_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 h, int w, int subh, int subw) { |
| 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] = VPX_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] = VPX_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 = VPX_BLEND_AVG(mask[i * mask_stride + (2 * j)], |
| mask[i * mask_stride + (2 * j + 1)]); |
| dst[i * dst_stride + j] = VPX_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 = VPX_BLEND_AVG(mask[(2 * i) * mask_stride + j], |
| mask[(2 * i + 1) * mask_stride + j]); |
| dst[i * dst_stride + j] = VPX_BLEND_A64(m, |
| src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } |
| } |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| void vpx_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 h, int w, int subh, int subw, 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); |
| |
| 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] = VPX_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] = VPX_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 = VPX_BLEND_AVG(mask[i * mask_stride + (2 * j)], |
| mask[i * mask_stride + (2 * j + 1)]); |
| dst[i * dst_stride + j] = VPX_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 = VPX_BLEND_AVG(mask[(2 * i) * mask_stride + j], |
| mask[(2 * i + 1) * mask_stride + j]); |
| dst[i * dst_stride + j] = VPX_BLEND_A64(m, |
| src0[i * src0_stride + j], |
| src1[i * src1_stride + j]); |
| } |
| } |
| } |
| } |
| #endif // CONFIG_VP9_HIGHBITDEPTH |