blob: 1649798e404340e5cc4cd2dcb0b311904e991fb0 [file] [log] [blame]
/*
* 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