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-rw-r--r--libass/ass_rasterizer_c.c132
1 files changed, 62 insertions, 70 deletions
diff --git a/libass/ass_rasterizer_c.c b/libass/ass_rasterizer_c.c
index 324cdca..832d266 100644
--- a/libass/ass_rasterizer_c.c
+++ b/libass/ass_rasterizer_c.c
@@ -27,22 +27,20 @@
void ass_fill_solid_tile16_c(uint8_t *buf, ptrdiff_t stride, int set)
{
- int i, j;
int8_t value = set ? 255 : 0;
- for (j = 0; j < 16; ++j) {
- for (i = 0; i < 16; ++i)
- buf[i] = value;
+ for (int y = 0; y < 16; y++) {
+ for (int x = 0; x < 16; x++)
+ buf[x] = value;
buf += stride;
}
}
void ass_fill_solid_tile32_c(uint8_t *buf, ptrdiff_t stride, int set)
{
- int i, j;
int8_t value = set ? 255 : 0;
- for (j = 0; j < 32; ++j) {
- for (i = 0; i < 32; ++i)
- buf[i] = value;
+ for (int y = 0; y < 32; y++) {
+ for (int x = 0; x < 32; x++)
+ buf[x] = value;
buf += stride;
}
}
@@ -82,21 +80,20 @@ void ass_fill_halfplane_tile16_c(uint8_t *buf, ptrdiff_t stride,
int16_t abs_b = bb < 0 ? -bb : bb;
int16_t delta = (FFMIN(abs_a, abs_b) + 2) >> 2;
- int i, j;
int16_t va1[16], va2[16];
- for (i = 0; i < 16; ++i) {
- va1[i] = aa * i - delta;
- va2[i] = aa * i + delta;
+ for (int x = 0; x < 16; x++) {
+ va1[x] = aa * x - delta;
+ va2[x] = aa * x + delta;
}
static const int16_t full = (1 << 10) - 1;
- for (j = 0; j < 16; ++j) {
- for (i = 0; i < 16; ++i) {
- int16_t c1 = cc - va1[i];
- int16_t c2 = cc - va2[i];
+ for (int y = 0; y < 16; y++) {
+ for (int x = 0; x < 16; x++) {
+ int16_t c1 = cc - va1[x];
+ int16_t c2 = cc - va2[x];
c1 = FFMINMAX(c1, 0, full);
c2 = FFMINMAX(c2, 0, full);
- buf[i] = (c1 + c2) >> 3;
+ buf[x] = (c1 + c2) >> 3;
}
buf += stride;
cc -= bb;
@@ -115,21 +112,20 @@ void ass_fill_halfplane_tile32_c(uint8_t *buf, ptrdiff_t stride,
int16_t abs_b = bb < 0 ? -bb : bb;
int16_t delta = (FFMIN(abs_a, abs_b) + 2) >> 2;
- int i, j;
int16_t va1[32], va2[32];
- for (i = 0; i < 32; ++i) {
- va1[i] = aa * i - delta;
- va2[i] = aa * i + delta;
+ for (int x = 0; x < 32; x++) {
+ va1[x] = aa * x - delta;
+ va2[x] = aa * x + delta;
}
static const int16_t full = (1 << 9) - 1;
- for (j = 0; j < 32; ++j) {
- for (i = 0; i < 32; ++i) {
- int16_t c1 = cc - va1[i];
- int16_t c2 = cc - va2[i];
+ for (int y = 0; y < 32; y++) {
+ for (int x = 0; x < 32; x++) {
+ int16_t c1 = cc - va1[x];
+ int16_t c2 = cc - va2[x];
c1 = FFMINMAX(c1, 0, full);
c2 = FFMINMAX(c2, 0, full);
- buf[i] = (c1 + c2) >> 2;
+ buf[x] = (c1 + c2) >> 2;
}
buf += stride;
cc -= bb;
@@ -163,15 +159,14 @@ static inline void update_border_line16(int16_t res[16],
int16_t offs1 = size - ((base + dc) * (int32_t)w >> 16);
int16_t offs2 = size - ((base - dc) * (int32_t)w >> 16);
- int i;
size <<= 1;
- for (i = 0; i < 16; ++i) {
- int16_t cw = (c - va[i]) * (int32_t)w >> 16;
+ for (int x = 0; x < 16; x++) {
+ int16_t cw = (c - va[x]) * (int32_t)w >> 16;
int16_t c1 = cw + offs1;
int16_t c2 = cw + offs2;
c1 = FFMINMAX(c1, 0, size);
c2 = FFMINMAX(c2, 0, size);
- res[i] += c1 + c2;
+ res[x] += c1 + c2;
}
}
@@ -179,13 +174,12 @@ void ass_fill_generic_tile16_c(uint8_t *buf, ptrdiff_t stride,
const struct segment *line, size_t n_lines,
int winding)
{
- int i, j;
int16_t res[16][16], delta[18];
- for (j = 0; j < 16; ++j)
- for (i = 0; i < 16; ++i)
- res[j][i] = 0;
- for (j = 0; j < 18; ++j)
- delta[j] = 0;
+ for (int y = 0; y < 16; y++)
+ for (int x = 0; x < 16; x++)
+ res[y][x] = 0;
+ for (int y = 0; y < 18; y++)
+ delta[y] = 0;
static const int16_t full = 1 << 10;
const struct segment *end = line + n_lines;
@@ -221,8 +215,8 @@ void ass_fill_generic_tile16_c(uint8_t *buf, ptrdiff_t stride,
c -= (a >> 1) + b * up;
int16_t va[16];
- for (i = 0; i < 16; ++i)
- va[i] = a * i;
+ for (int x = 0; x < 16; x++)
+ va[x] = a * x;
int16_t abs_a = a < 0 ? -a : a;
int16_t abs_b = b < 0 ? -b : b;
int16_t dc = (FFMIN(abs_a, abs_b) + 2) >> 2;
@@ -239,13 +233,13 @@ void ass_fill_generic_tile16_c(uint8_t *buf, ptrdiff_t stride,
up++;
c -= b;
}
- for (j = up; j < dn; ++j) {
- for (i = 0; i < 16; ++i) {
- int16_t c1 = c - va[i] + dc1;
- int16_t c2 = c - va[i] + dc2;
+ for (int y = up; y < dn; y++) {
+ for (int x = 0; x < 16; x++) {
+ int16_t c1 = c - va[x] + dc1;
+ int16_t c2 = c - va[x] + dc2;
c1 = FFMINMAX(c1, 0, full);
c2 = FFMINMAX(c2, 0, full);
- res[j][i] += (c1 + c2) >> 3;
+ res[y][x] += (c1 + c2) >> 3;
}
c -= b;
}
@@ -254,12 +248,12 @@ void ass_fill_generic_tile16_c(uint8_t *buf, ptrdiff_t stride,
}
int16_t cur = 256 * winding;
- for (j = 0; j < 16; ++j) {
- cur += delta[j];
- for (i = 0; i < 16; ++i) {
- int16_t val = res[j][i] + cur, neg_val = -val;
+ for (int y = 0; y < 16; y++) {
+ cur += delta[y];
+ for (int x = 0; x < 16; x++) {
+ int16_t val = res[y][x] + cur, neg_val = -val;
val = (val > neg_val ? val : neg_val);
- buf[i] = FFMIN(val, 255);
+ buf[x] = FFMIN(val, 255);
}
buf += stride;
}
@@ -282,15 +276,14 @@ static inline void update_border_line32(int16_t res[32],
int16_t offs1 = size - ((base + dc) * (int32_t)w >> 16);
int16_t offs2 = size - ((base - dc) * (int32_t)w >> 16);
- int i;
size <<= 1;
- for (i = 0; i < 32; ++i) {
- int16_t cw = (c - va[i]) * (int32_t)w >> 16;
+ for (int x = 0; x < 32; x++) {
+ int16_t cw = (c - va[x]) * (int32_t)w >> 16;
int16_t c1 = cw + offs1;
int16_t c2 = cw + offs2;
c1 = FFMINMAX(c1, 0, size);
c2 = FFMINMAX(c2, 0, size);
- res[i] += c1 + c2;
+ res[x] += c1 + c2;
}
}
@@ -298,13 +291,12 @@ void ass_fill_generic_tile32_c(uint8_t *buf, ptrdiff_t stride,
const struct segment *line, size_t n_lines,
int winding)
{
- int i, j;
int16_t res[32][32], delta[34];
- for (j = 0; j < 32; ++j)
- for (i = 0; i < 32; ++i)
- res[j][i] = 0;
- for (j = 0; j < 34; ++j)
- delta[j] = 0;
+ for (int y = 0; y < 32; y++)
+ for (int x = 0; x < 32; x++)
+ res[y][x] = 0;
+ for (int y = 0; y < 34; y++)
+ delta[y] = 0;
static const int16_t full = 1 << 9;
const struct segment *end = line + n_lines;
@@ -340,8 +332,8 @@ void ass_fill_generic_tile32_c(uint8_t *buf, ptrdiff_t stride,
c -= (a >> 1) + b * up;
int16_t va[32];
- for (i = 0; i < 32; ++i)
- va[i] = a * i;
+ for (int x = 0; x < 32; x++)
+ va[x] = a * x;
int16_t abs_a = a < 0 ? -a : a;
int16_t abs_b = b < 0 ? -b : b;
int16_t dc = (FFMIN(abs_a, abs_b) + 2) >> 2;
@@ -358,13 +350,13 @@ void ass_fill_generic_tile32_c(uint8_t *buf, ptrdiff_t stride,
up++;
c -= b;
}
- for (j = up; j < dn; ++j) {
- for (i = 0; i < 32; ++i) {
- int16_t c1 = c - va[i] + dc1;
- int16_t c2 = c - va[i] + dc2;
+ for (int y = up; y < dn; y++) {
+ for (int x = 0; x < 32; x++) {
+ int16_t c1 = c - va[x] + dc1;
+ int16_t c2 = c - va[x] + dc2;
c1 = FFMINMAX(c1, 0, full);
c2 = FFMINMAX(c2, 0, full);
- res[j][i] += (c1 + c2) >> 2;
+ res[y][x] += (c1 + c2) >> 2;
}
c -= b;
}
@@ -373,12 +365,12 @@ void ass_fill_generic_tile32_c(uint8_t *buf, ptrdiff_t stride,
}
int16_t cur = 256 * winding;
- for (j = 0; j < 32; ++j) {
- cur += delta[j];
- for (i = 0; i < 32; ++i) {
- int16_t val = res[j][i] + cur, neg_val = -val;
+ for (int y = 0; y < 32; y++) {
+ cur += delta[y];
+ for (int x = 0; x < 32; x++) {
+ int16_t val = res[y][x] + cur, neg_val = -val;
val = (val > neg_val ? val : neg_val);
- buf[i] = FFMIN(val, 255);
+ buf[x] = FFMIN(val, 255);
}
buf += stride;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-28 04:13:33 +0000