Factor out png.decoder.filter_N functions
wuffs_png_decode_19k_8bpp/clang9 92.1MB/s ± 0% 95.7MB/s ± 0% +3.89% (p=0.008 n=5+5)
wuffs_png_decode_40k_24bpp/clang9 103MB/s ± 0% 110MB/s ± 0% +6.81% (p=0.008 n=5+5)
wuffs_png_decode_77k_8bpp/clang9 348MB/s ± 0% 358MB/s ± 0% +2.90% (p=0.008 n=5+5)
wuffs_png_decode_552k_32bpp/clang9 138MB/s ± 0% 136MB/s ± 0% -1.92% (p=0.008 n=5+5)
wuffs_png_decode_4002k_24bpp/clang9 103MB/s ± 0% 111MB/s ± 0% +8.04% (p=0.008 n=5+5)
wuffs_png_decode_filter_1_sub/clang9 738MB/s ± 0% 646MB/s ± 0% -12.51% (p=0.008 n=5+5)
wuffs_png_decode_filter_2_up/clang9 13.4GB/s ± 0% 13.1GB/s ± 0% -2.51% (p=0.008 n=5+5)
wuffs_png_decode_filter_3_average/clang9 329MB/s ± 0% 481MB/s ± 0% +46.25% (p=0.008 n=5+5)
wuffs_png_decode_filter_4_paeth/clang9 70.0MB/s ± 0% 65.3MB/s ± 0% -6.80% (p=0.008 n=5+5)
wuffs_png_decode_19k_8bpp/gcc10 98.0MB/s ± 0% 98.0MB/s ± 0% ~ (p=0.690 n=5+5)
wuffs_png_decode_40k_24bpp/gcc10 118MB/s ± 0% 118MB/s ± 0% +0.43% (p=0.016 n=5+5)
wuffs_png_decode_77k_8bpp/gcc10 318MB/s ± 0% 317MB/s ± 0% -0.19% (p=0.008 n=5+5)
wuffs_png_decode_552k_32bpp/gcc10 161MB/s ± 0% 159MB/s ± 0% -1.38% (p=0.008 n=5+5)
wuffs_png_decode_4002k_24bpp/gcc10 118MB/s ± 0% 118MB/s ± 0% ~ (p=0.056 n=5+5)
wuffs_png_decode_filter_1_sub/gcc10 932MB/s ± 0% 931MB/s ± 0% ~ (p=0.151 n=5+5)
wuffs_png_decode_filter_2_up/gcc10 11.0GB/s ± 1% 11.4GB/s ± 0% +3.32% (p=0.016 n=4+5)
wuffs_png_decode_filter_3_average/gcc10 645MB/s ± 0% 643MB/s ± 0% -0.29% (p=0.008 n=5+5)
wuffs_png_decode_filter_4_paeth/gcc10 90.1MB/s ± 0% 83.6MB/s ± 0% -7.24% (p=0.008 n=5+5)
diff --git a/release/c/wuffs-unsupported-snapshot.c b/release/c/wuffs-unsupported-snapshot.c
index 35ab8f5..a79fa07 100644
--- a/release/c/wuffs-unsupported-snapshot.c
+++ b/release/c/wuffs-unsupported-snapshot.c
@@ -29836,6 +29836,29 @@
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf);
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_1(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr);
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_2(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev);
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_3(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev);
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_4(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev);
+
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
@@ -30942,20 +30965,11 @@
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
- uint64_t v_filter_distance = 0;
uint32_t v_y = 0;
wuffs_base__slice_u8 v_dst = {0};
uint8_t v_filter = 0;
wuffs_base__slice_u8 v_curr_row = {0};
wuffs_base__slice_u8 v_prev_row = {0};
- uint64_t v_i = 0;
- uint32_t v_fa = 0;
- uint32_t v_fb = 0;
- uint32_t v_fc = 0;
- uint32_t v_pp = 0;
- uint32_t v_pa = 0;
- uint32_t v_pb = 0;
- uint32_t v_pc = 0;
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
@@ -30966,7 +30980,6 @@
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
- v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
while (v_y < self->private_impl.f_height) {
v_dst = wuffs_base__table_u8__row(v_tab, v_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
@@ -30984,79 +30997,13 @@
a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_bytes_per_row);
if (v_filter == 0) {
} else if (v_filter == 1) {
- v_i = v_filter_distance;
- while (v_i < ((uint64_t)(v_curr_row.len))) {
- if (v_i >= v_filter_distance) {
- if ((v_i - v_filter_distance) < ((uint64_t)(v_curr_row.len))) {
- v_curr_row.ptr[v_i] += v_curr_row.ptr[(v_i - v_filter_distance)];
- }
- }
- v_i += 1;
- }
+ wuffs_png__decoder__filter_1(self, v_curr_row);
} else if (v_filter == 2) {
- v_i = 0;
- while ((v_i < ((uint64_t)(v_curr_row.len))) && (v_i < ((uint64_t)(v_prev_row.len)))) {
- v_curr_row.ptr[v_i] += v_prev_row.ptr[v_i];
- v_i += 1;
- }
+ wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
} else if (v_filter == 3) {
- if (v_y == 0) {
- v_i = v_filter_distance;
- while (v_i < ((uint64_t)(v_curr_row.len))) {
- if (v_i >= v_filter_distance) {
- if ((v_i - v_filter_distance) < ((uint64_t)(v_curr_row.len))) {
- v_curr_row.ptr[v_i] += (v_curr_row.ptr[(v_i - v_filter_distance)] / 2);
- }
- }
- v_i += 1;
- }
- } else {
- v_i = 0;
- while ((v_i < ((uint64_t)(v_curr_row.len))) && (v_i < ((uint64_t)(v_prev_row.len)))) {
- if (v_i >= v_filter_distance) {
- if ((v_i - v_filter_distance) < ((uint64_t)(v_curr_row.len))) {
- v_curr_row.ptr[v_i] += ((uint8_t)(((((uint32_t)(v_curr_row.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(v_prev_row.ptr[v_i]))) / 2)));
- }
- } else {
- v_curr_row.ptr[v_i] += (v_prev_row.ptr[v_i] / 2);
- }
- v_i += 1;
- }
- }
+ wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
} else if (v_filter == 4) {
- v_i = 0;
- while ((v_i < ((uint64_t)(v_curr_row.len))) && (v_i < ((uint64_t)(v_prev_row.len)))) {
- if (v_i < v_filter_distance) {
- v_curr_row.ptr[v_i] += v_prev_row.ptr[v_i];
- } else {
- if (((v_i - v_filter_distance) < ((uint64_t)(v_curr_row.len))) && ((v_i - v_filter_distance) < ((uint64_t)(v_prev_row.len)))) {
- v_fa = ((uint32_t)(v_curr_row.ptr[(v_i - v_filter_distance)]));
- v_fb = ((uint32_t)(v_prev_row.ptr[v_i]));
- v_fc = ((uint32_t)(v_prev_row.ptr[(v_i - v_filter_distance)]));
- v_pp = ((v_fa + v_fb) - v_fc);
- v_pa = (v_pp - v_fa);
- if (v_pa >= 2147483648) {
- v_pa = (0 - v_pa);
- }
- v_pb = (v_pp - v_fb);
- if (v_pb >= 2147483648) {
- v_pb = (0 - v_pb);
- }
- v_pc = (v_pp - v_fc);
- if (v_pc >= 2147483648) {
- v_pc = (0 - v_pc);
- }
- if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
- v_curr_row.ptr[v_i] += ((uint8_t)((v_fa & 255)));
- } else if (v_pb <= v_pc) {
- v_curr_row.ptr[v_i] += ((uint8_t)((v_fb & 255)));
- } else {
- v_curr_row.ptr[v_i] += ((uint8_t)((v_fc & 255)));
- }
- }
- }
- v_i += 1;
- }
+ wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
} else {
return wuffs_base__make_status(wuffs_png__error__bad_filter);
}
@@ -31067,6 +31014,136 @@
return wuffs_base__make_status(NULL);
}
+// -------- func png.decoder.filter_1
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_1(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr) {
+ uint64_t v_filter_distance = 0;
+ uint64_t v_i = 0;
+
+ v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+ v_i = v_filter_distance;
+ while (v_i < ((uint64_t)(a_curr.len))) {
+ if (v_i >= v_filter_distance) {
+ if ((v_i - v_filter_distance) < ((uint64_t)(a_curr.len))) {
+ a_curr.ptr[v_i] += a_curr.ptr[(v_i - v_filter_distance)];
+ }
+ }
+ v_i += 1;
+ }
+ return wuffs_base__make_empty_struct();
+}
+
+// -------- func png.decoder.filter_2
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_2(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev) {
+ uint64_t v_i = 0;
+
+ v_i = 0;
+ while ((v_i < ((uint64_t)(a_curr.len))) && (v_i < ((uint64_t)(a_prev.len)))) {
+ a_curr.ptr[v_i] += a_prev.ptr[v_i];
+ v_i += 1;
+ }
+ return wuffs_base__make_empty_struct();
+}
+
+// -------- func png.decoder.filter_3
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_3(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev) {
+ uint64_t v_filter_distance = 0;
+ uint64_t v_i = 0;
+
+ v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+ if (((uint64_t)(a_prev.len)) == 0) {
+ v_i = v_filter_distance;
+ while (v_i < ((uint64_t)(a_curr.len))) {
+ if (v_i >= v_filter_distance) {
+ if ((v_i - v_filter_distance) < ((uint64_t)(a_curr.len))) {
+ a_curr.ptr[v_i] += (a_curr.ptr[(v_i - v_filter_distance)] / 2);
+ }
+ }
+ v_i += 1;
+ }
+ } else {
+ v_i = 0;
+ while ((v_i < ((uint64_t)(a_curr.len))) && (v_i < ((uint64_t)(a_prev.len)))) {
+ if (v_i >= v_filter_distance) {
+ if ((v_i - v_filter_distance) < ((uint64_t)(a_curr.len))) {
+ a_curr.ptr[v_i] += ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2)));
+ }
+ } else {
+ a_curr.ptr[v_i] += (a_prev.ptr[v_i] / 2);
+ }
+ v_i += 1;
+ }
+ }
+ return wuffs_base__make_empty_struct();
+}
+
+// -------- func png.decoder.filter_4
+
+static wuffs_base__empty_struct
+wuffs_png__decoder__filter_4(
+ wuffs_png__decoder* self,
+ wuffs_base__slice_u8 a_curr,
+ wuffs_base__slice_u8 a_prev) {
+ uint64_t v_filter_distance = 0;
+ uint64_t v_i = 0;
+ uint32_t v_fa = 0;
+ uint32_t v_fb = 0;
+ uint32_t v_fc = 0;
+ uint32_t v_pp = 0;
+ uint32_t v_pa = 0;
+ uint32_t v_pb = 0;
+ uint32_t v_pc = 0;
+
+ v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
+ v_i = 0;
+ while ((v_i < ((uint64_t)(a_curr.len))) && (v_i < ((uint64_t)(a_prev.len)))) {
+ if (v_i < v_filter_distance) {
+ a_curr.ptr[v_i] += a_prev.ptr[v_i];
+ } else {
+ if (((v_i - v_filter_distance) < ((uint64_t)(a_curr.len))) && ((v_i - v_filter_distance) < ((uint64_t)(a_prev.len)))) {
+ v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
+ v_fb = ((uint32_t)(a_prev.ptr[v_i]));
+ v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
+ v_pp = ((v_fa + v_fb) - v_fc);
+ v_pa = (v_pp - v_fa);
+ if (v_pa >= 2147483648) {
+ v_pa = (0 - v_pa);
+ }
+ v_pb = (v_pp - v_fb);
+ if (v_pb >= 2147483648) {
+ v_pb = (0 - v_pb);
+ }
+ v_pc = (v_pp - v_fc);
+ if (v_pc >= 2147483648) {
+ v_pc = (0 - v_pc);
+ }
+ if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
+ a_curr.ptr[v_i] += ((uint8_t)((v_fa & 255)));
+ } else if (v_pb <= v_pc) {
+ a_curr.ptr[v_i] += ((uint8_t)((v_fb & 255)));
+ } else {
+ a_curr.ptr[v_i] += ((uint8_t)((v_fc & 255)));
+ }
+ }
+ }
+ v_i += 1;
+ }
+ return wuffs_base__make_empty_struct();
+}
+
// -------- func png.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
diff --git a/std/png/decode_png.wuffs b/std/png/decode_png.wuffs
index 64bdc1d..0e9b4cb 100644
--- a/std/png/decode_png.wuffs
+++ b/std/png/decode_png.wuffs
@@ -398,7 +398,6 @@
var dst_bytes_per_row : base.u64
var dst_palette : slice base.u8
var tab : table base.u8
- var filter_distance : base.u64[..= 8]
var y : base.u32
var dst : slice base.u8
@@ -406,15 +405,6 @@
var curr_row : slice base.u8
var prev_row : slice base.u8
- var i : base.u64
- var fa : base.u32
- var fb : base.u32
- var fc : base.u32
- var pp : base.u32
- var pa : base.u32
- var pb : base.u32
- var pc : base.u32
-
// TODO: the dst_pixfmt variable shouldn't be necessary. We should be able
// to chain the two calls: "args.dst.pixel_format().bits_per_pixel()".
dst_pixfmt = args.dst.pixel_format()
@@ -426,7 +416,6 @@
dst_bytes_per_row = (this.width as base.u64) * dst_bytes_per_pixel
dst_palette = args.dst.palette_or_else(fallback: this.dst_palette[..])
tab = args.dst.plane(p: 0)
- filter_distance = this.filter_distance as base.u64
while y < this.height {
assert y < 0xFFFF_FFFF via "a < b: a < c; c <= b"(c: this.height)
@@ -449,97 +438,13 @@
if filter == 0 {
// No-op.
} else if filter == 1 {
- i = filter_distance
- while i < curr_row.length(),
- inv y < 0xFFFF_FFFF,
- {
- assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: curr_row.length())
- if i >= filter_distance {
- if (i - filter_distance) < curr_row.length() {
- curr_row[i] ~mod+= curr_row[i - filter_distance]
- }
- }
- i += 1
- } endwhile
+ this.filter_1!(curr: curr_row)
} else if filter == 2 {
- i = 0
- while (i < curr_row.length()) and (i < prev_row.length()),
- inv y < 0xFFFF_FFFF,
- {
- assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: curr_row.length())
- curr_row[i] ~mod+= prev_row[i]
- i += 1
- } endwhile
+ this.filter_2!(curr: curr_row, prev: prev_row)
} else if filter == 3 {
- if y == 0 {
- i = filter_distance
- while i < curr_row.length(),
- inv y < 0xFFFF_FFFF,
- {
- assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: curr_row.length())
- if i >= filter_distance {
- if (i - filter_distance) < curr_row.length() {
- curr_row[i] ~mod+= curr_row[i - filter_distance] / 2
- }
- }
- i += 1
- } endwhile
- } else {
- i = 0
- while (i < curr_row.length()) and (i < prev_row.length()),
- inv y < 0xFFFF_FFFF,
- {
- assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: curr_row.length())
- if i >= filter_distance {
- if (i - filter_distance) < curr_row.length() {
- curr_row[i] ~mod+= ((
- (curr_row[i - filter_distance] as base.u32) +
- (prev_row[i] as base.u32)) / 2) as base.u8
- }
- } else {
- curr_row[i] ~mod+= prev_row[i] / 2
- }
- i += 1
- } endwhile
- }
+ this.filter_3!(curr: curr_row, prev: prev_row)
} else if filter == 4 {
- i = 0
- while (i < curr_row.length()) and (i < prev_row.length()),
- inv y < 0xFFFF_FFFF,
- {
- assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: curr_row.length())
- if i < filter_distance {
- curr_row[i] ~mod+= prev_row[i]
- } else {
- if ((i - filter_distance) < curr_row.length()) and
- ((i - filter_distance) < prev_row.length()) {
- fa = curr_row[i - filter_distance] as base.u32
- fb = prev_row[i] as base.u32
- fc = prev_row[i - filter_distance] as base.u32
- pp = (fa ~mod+ fb) ~mod- fc
- pa = pp ~mod- fa
- if pa >= 0x8000_0000 {
- pa = 0 ~mod- pa
- }
- pb = pp ~mod- fb
- if pb >= 0x8000_0000 {
- pb = 0 ~mod- pb
- }
- pc = pp ~mod- fc
- if pc >= 0x8000_0000 {
- pc = 0 ~mod- pc
- }
- if (pa <= pb) and (pa <= pc) {
- curr_row[i] ~mod+= (fa & 0xFF) as base.u8
- } else if pb <= pc {
- curr_row[i] ~mod+= (fb & 0xFF) as base.u8
- } else {
- curr_row[i] ~mod+= (fc & 0xFF) as base.u8
- }
- }
- }
- i += 1
- } endwhile
+ this.filter_4!(curr: curr_row, prev: prev_row)
} else {
return "#bad filter"
}
@@ -556,6 +461,118 @@
return ok
}
+pri func decoder.filter_1!(curr: slice base.u8) {
+ var filter_distance : base.u64[..= 8]
+ var i : base.u64
+
+ filter_distance = this.filter_distance as base.u64
+ i = filter_distance
+ while i < args.curr.length() {
+ assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: args.curr.length())
+ if i >= filter_distance {
+ if (i - filter_distance) < args.curr.length() {
+ args.curr[i] ~mod+= args.curr[i - filter_distance]
+ }
+ }
+ i += 1
+ } endwhile
+}
+
+pri func decoder.filter_2!(curr: slice base.u8, prev: slice base.u8) {
+ var i : base.u64
+
+ i = 0
+ while (i < args.curr.length()) and (i < args.prev.length()) {
+ assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: args.curr.length())
+ args.curr[i] ~mod+= args.prev[i]
+ i += 1
+ } endwhile
+}
+
+pri func decoder.filter_3!(curr: slice base.u8, prev: slice base.u8) {
+ var filter_distance : base.u64[..= 8]
+ var i : base.u64
+
+ filter_distance = this.filter_distance as base.u64
+ if args.prev.length() == 0 {
+ i = filter_distance
+ while i < args.curr.length() {
+ assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: args.curr.length())
+ if i >= filter_distance {
+ if (i - filter_distance) < args.curr.length() {
+ args.curr[i] ~mod+= args.curr[i - filter_distance] / 2
+ }
+ }
+ i += 1
+ } endwhile
+ } else {
+ i = 0
+ while (i < args.curr.length()) and (i < args.prev.length()) {
+ assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: args.curr.length())
+ if i >= filter_distance {
+ if (i - filter_distance) < args.curr.length() {
+ args.curr[i] ~mod+= ((
+ (args.curr[i - filter_distance] as base.u32) +
+ (args.prev[i] as base.u32)) / 2) as base.u8
+ }
+ } else {
+ args.curr[i] ~mod+= args.prev[i] / 2
+ }
+ i += 1
+ } endwhile
+ }
+}
+
+pri func decoder.filter_4!(curr: slice base.u8, prev: slice base.u8) {
+ var filter_distance : base.u64[..= 8]
+ var i : base.u64
+
+ var fa : base.u32
+ var fb : base.u32
+ var fc : base.u32
+ var pp : base.u32
+ var pa : base.u32
+ var pb : base.u32
+ var pc : base.u32
+
+ filter_distance = this.filter_distance as base.u64
+ i = 0
+ while (i < args.curr.length()) and (i < args.prev.length()) {
+ assert i < 0xFFFF_FFFF_FFFF_FFFF via "a < b: a < c; c <= b"(c: args.curr.length())
+ if i < filter_distance {
+ args.curr[i] ~mod+= args.prev[i]
+ } else {
+ if ((i - filter_distance) < args.curr.length()) and
+ ((i - filter_distance) < args.prev.length()) {
+ fa = args.curr[i - filter_distance] as base.u32
+ fb = args.prev[i] as base.u32
+ fc = args.prev[i - filter_distance] as base.u32
+ pp = (fa ~mod+ fb) ~mod- fc
+ pa = pp ~mod- fa
+ if pa >= 0x8000_0000 {
+ pa = 0 ~mod- pa
+ }
+ pb = pp ~mod- fb
+ if pb >= 0x8000_0000 {
+ pb = 0 ~mod- pb
+ }
+ pc = pp ~mod- fc
+ if pc >= 0x8000_0000 {
+ pc = 0 ~mod- pc
+ }
+ if (pa <= pb) and (pa <= pc) {
+ args.curr[i] ~mod+= (fa & 0xFF) as base.u8
+ } else if pb <= pc {
+ args.curr[i] ~mod+= (fb & 0xFF) as base.u8
+ } else {
+ args.curr[i] ~mod+= (fc & 0xFF) as base.u8
+ }
+ }
+ }
+ i += 1
+ } endwhile
+}
+
pub func decoder.frame_dirty_rect() base.rect_ie_u32 {
return this.util.make_rect_ie_u32(
min_incl_x: 0,
