From 68569dee1416593955c1570d638b3d9250b33012 Mon Sep 17 00:00:00 2001 From: trav90 Date: Mon, 15 Oct 2018 21:45:30 -0500 Subject: Import aom library This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36. --- third_party/aom/aom_dsp/blend_a64_mask.c | 145 +++++++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 third_party/aom/aom_dsp/blend_a64_mask.c (limited to 'third_party/aom/aom_dsp/blend_a64_mask.c') diff --git a/third_party/aom/aom_dsp/blend_a64_mask.c b/third_party/aom/aom_dsp/blend_a64_mask.c new file mode 100644 index 000000000..3e15542c9 --- /dev/null +++ b/third_party/aom/aom_dsp/blend_a64_mask.c @@ -0,0 +1,145 @@ +/* + * 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 + +#include "aom/aom_integer.h" +#include "aom_ports/mem.h" +#include "aom_dsp/blend.h" +#include "aom_dsp/aom_dsp_common.h" + +#include "./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. + +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 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] = 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_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 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); + (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_HIGHBITDEPTH -- cgit v1.2.3