github-mirrors/FFmpeg
1
0
Fork 0
mirror of https://mirror.skon.top/https://github.com/FFmpeg/FFmpeg synced 2026-04-20 21:00:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

swscale/output: Fix unsigned cast position in yuv2*

Browse Source 
Fixes: signed overflow

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2025-10-13 14:46:16 +02:00
parent 0c6b7f9483
commit 566e9032b1
1 changed files with 45 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
libswscale/output.c
View File

@@ -503,8 +503,8 @@ static void yuv2nv12cX_c(enum AVPixelFormat dstFormat, const uint8_t *chrDither,
int v = chrDither[(i + 3) & 7] << 12;
int j;
for (j=0; j<chrFilterSize; j++) {
u += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
v += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
u += chrUSrc[j][i] * (unsigned)chrFilter[j];
v += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
dest[2*i]= av_clip_uint8(u>>19);
@@ -516,8 +516,8 @@ static void yuv2nv12cX_c(enum AVPixelFormat dstFormat, const uint8_t *chrDither,
int v = chrDither[(i + 3) & 7] << 12;
int j;
for (j=0; j<chrFilterSize; j++) {
u += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
v += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
u += chrUSrc[j][i] * (unsigned)chrFilter[j];
v += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
dest[2*i]= av_clip_uint8(v>>19);
@@ -577,8 +577,8 @@ static void yuv2p01xcX_c(int big_endian, const uint8_t *chrDither,
int v = 1 << (shift - 1);
for (j = 0; j < chrFilterSize; j++) {
u += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
v += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
u += chrUSrc[j][i] * (unsigned)chrFilter[j];
v += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
output_pixel(&dest[2*i] , u);
@@ -678,8 +678,8 @@ yuv2mono_X_c_template(SwsInternal *c, const int16_t *lumFilter,
int Y2 = 1 << 18;
for (j = 0; j < lumFilterSize; j++) {
Y1 += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y2 += (unsigned)(lumSrc[j][i+1] * lumFilter[j]);
Y1 += lumSrc[j][i] * (unsigned)lumFilter[j];
Y2 += lumSrc[j][i+1] * (unsigned)lumFilter[j];
}
Y1 >>= 19;
Y2 >>= 19;
@@ -896,12 +896,12 @@ yuv2422_X_c_template(SwsInternal *c, const int16_t *lumFilter,
int V = 1 << 18;
for (j = 0; j < lumFilterSize; j++) {
Y1 += (unsigned)(lumSrc[j][i * 2] * lumFilter[j]);
Y2 += (unsigned)(lumSrc[j][i * 2 + 1] * lumFilter[j]);
Y1 += lumSrc[j][i * 2] * (unsigned)lumFilter[j];
Y2 += lumSrc[j][i * 2 + 1] * (unsigned)lumFilter[j];
}
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
Y1 >>= 19;
Y2 >>= 19;
@@ -1802,12 +1802,12 @@ yuv2rgb_X_c_template(SwsInternal *c, const int16_t *lumFilter,
const void *r, *g, *b;
for (j = 0; j < lumFilterSize; j++) {
Y1 += (unsigned)(lumSrc[j][i * 2] * lumFilter[j]);
Y2 += (unsigned)(lumSrc[j][i * 2 + 1] * lumFilter[j]);
Y1 += lumSrc[j][i * 2] * (unsigned)lumFilter[j];
Y2 += lumSrc[j][i * 2 + 1] * (unsigned)lumFilter[j];
}
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
Y1 >>= 19;
Y2 >>= 19;
@@ -1817,8 +1817,8 @@ yuv2rgb_X_c_template(SwsInternal *c, const int16_t *lumFilter,
A1 = 1 << 18;
A2 = 1 << 18;
for (j = 0; j < lumFilterSize; j++) {
A1 += (unsigned)(alpSrc[j][i * 2 ] * lumFilter[j]);
A2 += (unsigned)(alpSrc[j][i * 2 + 1] * lumFilter[j]);
A1 += alpSrc[j][i * 2 ] * (unsigned)lumFilter[j];
A2 += alpSrc[j][i * 2 + 1] * (unsigned)lumFilter[j];
}
A1 >>= 19;
A2 >>= 19;
@@ -2179,11 +2179,11 @@ yuv2rgb_full_X_c_template(SwsInternal *c, const int16_t *lumFilter,
int V = (1<<9)-(128 << 19);
for (j = 0; j < lumFilterSize; j++) {
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
}
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
Y >>= 10;
U >>= 10;
@@ -2191,7 +2191,7 @@ yuv2rgb_full_X_c_template(SwsInternal *c, const int16_t *lumFilter,
if (hasAlpha) {
A = 1 << 18;
for (j = 0; j < lumFilterSize; j++) {
A += (unsigned)(alpSrc[j][i] * lumFilter[j]);
A += alpSrc[j][i] * (unsigned)lumFilter[j];
}
A >>= 19;
if (A & 0x100)
@@ -2360,11 +2360,11 @@ yuv2gbrp_full_X_c(SwsInternal *c, const int16_t *lumFilter,
int R, G, B;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
Y >>= 10;
@@ -2375,7 +2375,7 @@ yuv2gbrp_full_X_c(SwsInternal *c, const int16_t *lumFilter,
A = 1 << 18;
for (j = 0; j < lumFilterSize; j++)
A += (unsigned)(alpSrc[j][i] * lumFilter[j]);
A += alpSrc[j][i] * (unsigned)lumFilter[j];
if (A & 0xF8000000)
A = av_clip_uintp2(A, 27);
@@ -2679,7 +2679,7 @@ yuv2ya8_X_c(SwsInternal *c, const int16_t *lumFilter,
int Y = 1 << 18, A = 1 << 18;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
Y >>= 19;
if (Y & 0x100)
@@ -2687,7 +2687,7 @@ yuv2ya8_X_c(SwsInternal *c, const int16_t *lumFilter,
if (hasAlpha) {
for (j = 0; j < lumFilterSize; j++)
A += (unsigned)(alpSrc[j][i] * lumFilter[j]);
A += alpSrc[j][i] * (unsigned)lumFilter[j];
A >>= 19;
@@ -2793,11 +2793,11 @@ yuv2v30_X_c_template(SwsInternal *c, const int16_t *lumFilter,
int j;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
Y = av_clip_uintp2(Y >> 17, 10);
@@ -2847,11 +2847,11 @@ yuv2xv36_X_c(SwsInternal *c, const int16_t *lumFilter,
int j;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
for (j = 0; j < chrFilterSize; j++) {
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
}
output_pixels(dest + 8 * i + 2, Y, 15, 12, 4)
@@ -3011,13 +3011,13 @@ yuv2ayuv_X_c_template(SwsInternal *c, const int16_t *lumFilter,
int V = 1 << 18, A = 255;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
for (j = 0; j < chrFilterSize; j++)
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
for (j = 0; j < chrFilterSize; j++)
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
Y >>= 19;
U >>= 19;
@@ -3034,7 +3034,7 @@ yuv2ayuv_X_c_template(SwsInternal *c, const int16_t *lumFilter,
A = 1 << 18;
for (j = 0; j < lumFilterSize; j++)
A += (unsigned)(alpSrc[j][i] * lumFilter[j]);
A += alpSrc[j][i] * (unsigned)lumFilter[j];
A >>= 19;
@@ -3105,13 +3105,13 @@ AYUVPACKEDWRAPPER(uyva, AV_PIX_FMT_UYVA)
int U = 1 << (shift - 1), V = 1 << (shift - 1); \
\
for (j = 0; j < lumFilterSize; j++) { \
Y1 += (unsigned)(lumSrc[j][i * 2] * lumFilter[j]); \
Y2 += (unsigned)(lumSrc[j][i * 2 + 1] * lumFilter[j]); \
Y1 += lumSrc[j][i * 2] * (unsigned)lumFilter[j]; \
Y2 += lumSrc[j][i * 2 + 1] * (unsigned)lumFilter[j]; \
} \
\
for (j = 0; j < chrFilterSize; j++) { \
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]); \
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]); \
U += chrUSrc[j][i] * (unsigned)chrFilter[j]; \
V += chrVSrc[j][i] * (unsigned)chrFilter[j]; \
} \
\
output_pixel(dest + 8 * i + 0, Y1, bits); \
@@ -3259,13 +3259,13 @@ yuv2vyu444_X_c(SwsInternal *c, const int16_t *lumFilter,
int V = 1 << 18;
for (j = 0; j < lumFilterSize; j++)
Y += (unsigned)(lumSrc[j][i] * lumFilter[j]);
Y += lumSrc[j][i] * (unsigned)lumFilter[j];
for (j = 0; j < chrFilterSize; j++)
U += (unsigned)(chrUSrc[j][i] * chrFilter[j]);
U += chrUSrc[j][i] * (unsigned)chrFilter[j];
for (j = 0; j < chrFilterSize; j++)
V += (unsigned)(chrVSrc[j][i] * chrFilter[j]);
V += chrVSrc[j][i] * (unsigned)chrFilter[j];
Y >>= 19;
U >>= 19;