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skia / external / github.com / google / wuffs / 79b39e14bf2e1ea75aa29ca2e6777dee94dcfb8c / . / internal / cgen / base / pixconv-submodule.c
blob: 8f6e80ca8f3c43f9aa151eceb37f0855a777389f [file] [log] [blame]
// After editing this file, run "go generate" in the ../data directory.
// Copyright 2017 The Wuffs Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ---------------- Pixel Swizzler
static inline uint32_t //
wuffs_base__swap_u32_argb_abgr(uint32_t u) {
uint32_t o = u & 0xFF00FF00;
uint32_t r = u & 0x00FF0000;
uint32_t b = u & 0x000000FF;
return o | (r >> 16) | (b << 16);
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul //
wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y) {
if (!pb || (x >= pb->pixcfg.private_impl.width) ||
(y >= pb->pixcfg.private_impl.height)) {
return 0;
}
if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
// TODO: support planar formats.
return 0;
}
size_t stride = pb->private_impl.planes[0].stride;
const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
switch (pb->pixcfg.private_impl.pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
return wuffs_base__load_u32le__no_bounds_check(row + (4 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
uint8_t* palette = pb->private_impl.planes[3].ptr;
return wuffs_base__load_u32le__no_bounds_check(palette +
(4 * ((size_t)row[x])));
}
// Common formats above. Rarer formats below.
case WUFFS_BASE__PIXEL_FORMAT__Y:
return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
uint8_t* palette = pb->private_impl.planes[3].ptr;
return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(palette +
(4 * ((size_t)row[x]))));
}
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__load_u16le__no_bounds_check(row + (2 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return 0xFF000000 |
wuffs_base__load_u24le__no_bounds_check(row + (3 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(row + (4 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u64le__no_bounds_check(row + (8 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return 0xFF000000 |
wuffs_base__load_u32le__no_bounds_check(row + (4 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__swap_u32_argb_abgr(
0xFF000000 |
wuffs_base__load_u24le__no_bounds_check(row + (3 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
return wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(row +
(4 * ((size_t)x)))));
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
return wuffs_base__swap_u32_argb_abgr(
wuffs_base__load_u32le__no_bounds_check(row + (4 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__swap_u32_argb_abgr(
0xFF000000 |
wuffs_base__load_u32le__no_bounds_check(row + (4 * ((size_t)x))));
default:
// TODO: support more formats.
break;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_at(
wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y,
wuffs_base__color_u32_argb_premul color) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if ((x >= pb->pixcfg.private_impl.width) ||
(y >= pb->pixcfg.private_impl.height)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
// TODO: support planar formats.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
size_t stride = pb->private_impl.planes[0].stride;
uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
switch (pb->pixcfg.private_impl.pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
wuffs_base__store_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
break;
// Common formats above. Rarer formats below.
case WUFFS_BASE__PIXEL_FORMAT__Y:
wuffs_base__store_u8__no_bounds_check(
row + ((size_t)x),
wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
wuffs_base__store_u8__no_bounds_check(
row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
wuffs_base__pixel_buffer__palette(pb),
pb->pixcfg.private_impl.pixfmt, color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
wuffs_base__store_u16le__no_bounds_check(
row + (2 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
wuffs_base__store_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
wuffs_base__store_u32le__no_bounds_check(
row + (4 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
wuffs_base__store_u64le__no_bounds_check(
row + (8 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
color));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
wuffs_base__store_u24le__no_bounds_check(
row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
wuffs_base__store_u32le__no_bounds_check(
row + (4 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__swap_u32_argb_abgr(color)));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
wuffs_base__store_u32le__no_bounds_check(
row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
break;
default:
// TODO: support more formats.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
return wuffs_base__make_status(NULL);
}
// --------
WUFFS_BASE__MAYBE_STATIC uint8_t //
wuffs_base__pixel_palette__closest_element(
wuffs_base__slice_u8 palette_slice,
wuffs_base__pixel_format palette_format,
wuffs_base__color_u32_argb_premul c) {
size_t n = palette_slice.len / 4;
if (n > 256) {
n = 256;
}
size_t best_index = 0;
uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
// Work in 16-bit color.
uint32_t ca = 0x101 * (0xFF & (c >> 24));
uint32_t cr = 0x101 * (0xFF & (c >> 16));
uint32_t cg = 0x101 * (0xFF & (c >> 8));
uint32_t cb = 0x101 * (0xFF & (c >> 0));
switch (palette_format.repr) {
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
bool nonpremul = palette_format.repr ==
WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
size_t i;
for (i = 0; i < n; i++) {
// Work in 16-bit color.
uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
// Convert to premultiplied alpha.
if (nonpremul && (pa != 0xFFFF)) {
pb = (pb * pa) / 0xFFFF;
pg = (pg * pa) / 0xFFFF;
pr = (pr * pa) / 0xFFFF;
}
// These deltas are conceptually int32_t (signed) but after squaring,
// it's equivalent to work in uint32_t (unsigned).
pb -= cb;
pg -= cg;
pr -= cr;
pa -= ca;
uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
if (best_score > score) {
best_score = score;
best_index = i;
}
}
break;
}
}
return (uint8_t)best_index;
}
// --------
static inline uint32_t //
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul,
uint32_t src_nonpremul) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint64_t //
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul,
uint64_t src_nonpremul) {
// Extract components.
uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint64_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Combine components.
return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
}
static inline uint32_t //
wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
uint32_t src_premul) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint32_t //
wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul,
uint32_t src_nonpremul) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint64_t //
wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul,
uint64_t src_nonpremul) {
// Extract components.
uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
uint64_t da = 0xFFFF & (dst_premul >> 48);
uint64_t dr = 0xFFFF & (dst_premul >> 32);
uint64_t dg = 0xFFFF & (dst_premul >> 16);
uint64_t db = 0xFFFF & (dst_premul >> 0);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint64_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Combine components.
return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
}
static inline uint32_t //
wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul,
uint32_t src_premul) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__squash_align4_bgr_565_888(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint32_t argb = wuffs_base__load_u32le__no_bounds_check(s);
uint32_t b5 = 0x1F & (argb >> (8 - 5));
uint32_t g6 = 0x3F & (argb >> (16 - 6));
uint32_t r5 = 0x1F & (argb >> (24 - 5));
uint32_t alpha = argb & 0xFF000000;
wuffs_base__store_u32le__no_bounds_check(
d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
s += 4;
d += 4;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
d[0] = b2;
d[1] = b1;
d[2] = b0;
s += 3;
d += 3;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
uint8_t b3 = s[3];
d[0] = b2;
d[1] = b1;
d[2] = b0;
d[3] = b3;
s += 4;
d += 4;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__squash_tight_4x8_4x16le(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__color_u64__as__color_u32(
wuffs_base__load_u64le__no_bounds_check(s + (0 * 8))));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len) ? dst_len : src_len;
if (len > 0) {
memmove(dst_ptr, src_ptr, len);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len3 = src_len / 3;
size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 3);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 4);
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len3 = src_len / 3;
size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t b5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t r5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 3;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t b5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t r5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len8 = src_len / 8;
size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u64le__no_bounds_check(s + (0 * 8)))));
s += 1 * 8;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__load_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2),
(uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len8 = src_len / 8;
size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 6));
uint32_t sr = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 4));
uint32_t sg = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 2));
uint32_t sb = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 0));
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__load_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2),
(uint16_t)new_rgb_565);
s += 1 * 8;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len3 = src_len / 3;
size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t r5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t b5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 3;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4))))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__load_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2),
(uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t y5 = s[0] >> 3;
uint32_t y6 = s[0] >> 2;
uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
wuffs_base__store_u16le__no_bounds_check(
d + (0 * 2), wuffs_base__load_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__store_u16le__no_bounds_check(
d + (1 * 2), wuffs_base__load_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__store_u16le__no_bounds_check(
d + (2 * 2), wuffs_base__load_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__store_u16le__no_bounds_check(
d + (3 * 2), wuffs_base__load_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 2;
n -= loop_unroll_count;
}
while (n >= 1) {
wuffs_base__store_u16le__no_bounds_check(
d + (0 * 2), wuffs_base__load_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__store_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
}
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 =
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len8 = src_len / 8;
size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 =
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u64le__no_bounds_check(s + (0 * 8)));
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 8;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len8 = src_len / 8;
size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 6));
uint32_t sr = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 4));
uint32_t sg = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 2));
uint32_t sb = ((uint32_t)wuffs_base__load_u16le__no_bounds_check(s + 0));
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 8;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4))));
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__load_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__load_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__load_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__load_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t s0 = wuffs_base__load_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__load_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__load_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__load_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__load_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len3 = src_len / 3;
size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
0xFF000000 | wuffs_base__load_u24le__no_bounds_check(s + (0 * 3)));
s += 1 * 3;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4),
0xFF000000 | wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len3 = src_len / 3;
size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
d[0] = b2;
d[1] = b1;
d[2] = b0;
d[3] = 0xFF;
s += 1 * 3;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
// The comparison in the while condition is ">", not ">=", because with
// ">=", the last 4-byte store could write past the end of the dst slice.
//
// Each 4-byte store writes one too many bytes, but a subsequent store
// will overwrite that with the correct byte. There is always another
// store, whether a 4-byte store in this loop or a 1-byte store in the
// next loop.
while (n > loop_unroll_count) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 3), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (1 * 3), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (2 * 3), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (3 * 3), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 3;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
}
uint32_t s1 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[1] * 4));
if (s1) {
wuffs_base__store_u24le__no_bounds_check(d + (1 * 3), s1);
}
uint32_t s2 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[2] * 4));
if (s2) {
wuffs_base__store_u24le__no_bounds_check(d + (2 * 3), s2);
}
uint32_t s3 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[3] * 4));
if (s3) {
wuffs_base__store_u24le__no_bounds_check(d + (3 * 3), s3);
}
s += loop_unroll_count * 1;
d += loop_unroll_count * 3;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__store_u24le__no_bounds_check(d + (0 * 3), s0);
}
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__store_u24le__no_bounds_check(
d + (0 * 3), wuffs_base__load_u32le__no_bounds_check(s + (0 * 4)));
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint8_t s0 = s[0];
d[0] = s0;
d[1] = s0;
d[2] = s0;
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (1 * 4), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (2 * 4), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__store_u32le__no_bounds_check(
d + (3 * 4), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 4;
n -= loop_unroll_count;
}
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__load_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len != 1024) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__store_u32le__no_bounds_check(d + (0 * 4), s0);
}
uint32_t s1 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[1] * 4));
if (s1) {
wuffs_base__store_u32le__no_bounds_check(d + (1 * 4), s1);
}
uint32_t s2 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[2] * 4));
if (s2) {
wuffs_base__store_u32le__no_bounds_check(d + (2 * 4), s2);
}
uint32_t s3 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[3] * 4));
if (s3) {
wuffs_base__store_u32le__no_bounds_check(d + (3 * 4), s3);
}
s += loop_unroll_count * 1;
d += loop_unroll_count * 4;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__load_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__store_u32le__no_bounds_check(d + (0 * 4), s0);
}
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
#if defined(__GNUC__)
__attribute__((target("sse4.2")))
#endif
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__y__sse128(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
__m128i shuffle = _mm_set_epi8(0x03, 0x03, 0x03, 0x03, //
0x02, 0x02, 0x02, 0x02, //
0x01, 0x01, 0x01, 0x01, //
0x00, 0x00, 0x00, 0x00);
__m128i or = _mm_set_epi8(0xFF, 0x00, 0x00, 0x00, //
0xFF, 0x00, 0x00, 0x00, //
0xFF, 0x00, 0x00, 0x00, //
0xFF, 0x00, 0x00, 0x00);
while (n >= 4) {
__m128i x;
x = _mm_cvtsi32_si128(wuffs_base__load_u32le__no_bounds_check(s));
x = _mm_shuffle_epi8(x, shuffle);
x = _mm_or_si128(x, or);
_mm_storeu_si128((void*)d, x);
s += 4 * 1;
d += 4 * 4;
n -= 4;
}
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
#endif
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__store_u32le__no_bounds_check(
d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__transparent_black_src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
uint64_t num_pixels,
uint32_t dst_pixfmt_bytes_per_pixel) {
uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
if (n > num_pixels) {
n = num_pixels;
}
memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
return n;
}
static uint64_t //
wuffs_base__pixel_swizzler__transparent_black_src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
uint64_t num_pixels,
uint32_t dst_pixfmt_bytes_per_pixel) {
uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
if (n > num_pixels) {
n = num_pixels;
}
return n;
}
// --------
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__Y:
return wuffs_base__pixel_swizzler__copy_1_1;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__y;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__pixel_swizzler__xxx__y;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
#if defined(WUFFS_BASE__CPU_ARCH__X86_64)
if (wuffs_base__cpu_arch__x86_64__capabilities() &
WUFFS_BASE__CPU_ARCH__X86_64__SSE128) {
return wuffs_base__pixel_swizzler__xxxx__y__sse128;
}
#endif
return wuffs_base__pixel_swizzler__xxxx__y;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
1024) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_1_1;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_888(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) != 256) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
1024) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
1024) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) != 256) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) != 256) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
}
return NULL;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__bgr;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__copy_3_3;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__bgrw__bgr;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__squash_tight_4x8_4x16le;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__bgrx;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__xxx__xxxx;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
return wuffs_base__pixel_swizzler__bgrw__bgrx;
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__rgb;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__swap_rgb_bgr;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__bgrw__rgb;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__pixel_format src_pixfmt,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
if (!p) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
p->private_impl.func = NULL;
p->private_impl.transparent_black_func = NULL;
p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
p->private_impl.src_pixfmt_bytes_per_pixel = 0;
wuffs_base__pixel_swizzler__func func = NULL;
wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
NULL;
uint32_t dst_pixfmt_bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
if ((dst_pixfmt_bits_per_pixel == 0) ||
((dst_pixfmt_bits_per_pixel & 7) != 0)) {
return wuffs_base__make_status(
wuffs_base__error__unsupported_pixel_swizzler_option);
}
uint32_t src_pixfmt_bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
if ((src_pixfmt_bits_per_pixel == 0) ||
((src_pixfmt_bits_per_pixel & 7) != 0)) {
return wuffs_base__make_status(
wuffs_base__error__unsupported_pixel_swizzler_option);
}
// TODO: support many more formats.
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
transparent_black_func =
wuffs_base__pixel_swizzler__transparent_black_src;
break;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
transparent_black_func =
wuffs_base__pixel_swizzler__transparent_black_src_over;
break;
}
switch (src_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__Y:
func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette,
src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
func = wuffs_base__pixel_swizzler__prepare__bgr(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
func = wuffs_base__pixel_swizzler__prepare__bgrx(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
func = wuffs_base__pixel_swizzler__prepare__rgb(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
}
p->private_impl.func = func;
p->private_impl.transparent_black_func = transparent_black_func;
p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
return wuffs_base__make_status(
func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
uint32_t up_to_num_pixels,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r) {
if (p && p->private_impl.func) {
const uint8_t* iop_r = *ptr_iop_r;
uint64_t src_len = wuffs_base__u64__min(
((uint64_t)up_to_num_pixels) *
((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
((uint64_t)(io2_r - iop_r)));
uint64_t n =
(*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, iop_r, (size_t)src_len);
*ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
return n;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r) {
if (p && p->private_impl.func) {
const uint8_t* iop_r = *ptr_iop_r;
uint64_t src_len = ((uint64_t)(io2_r - iop_r));
uint64_t n =
(*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, iop_r, (size_t)src_len);
*ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
return n;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src) {
if (p && p->private_impl.func) {
return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, src.ptr, src.len);
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
uint64_t num_pixels) {
if (p && p->private_impl.transparent_black_func) {
return (*p->private_impl.transparent_black_func)(
dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
p->private_impl.dst_pixfmt_bytes_per_pixel);
}
return 0;
}