mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-19 14:56:36 +00:00
Code Issues 1 Projects Releases Wiki Activity

videoscale: Use correct boundary checks for YUY2/UYVY

Browse source 
Fixes bug #613093.
This commit is contained in:
Sebastian Dröge 2010-03-17 16:46:32 +01:00
parent f21e123bcc
commit bbdc60fbcb
2 changed files with 16 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
gst/videoscale/vs_4tap.c
View file

@ -612,7 +612,7 @@ vs_scanline_resample_4tap_YUYV (uint8_t * dest, uint8_t * src,
j = acc >> 17;
x = (acc & 0x1ffff) >> 9;
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) {
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 1 - 4, 1)];
y += vs_4tap_taps[x][1] * src[j * 4 + 1];
y += vs_4tap_taps[x][2] * src[j * 4 + 1 + 4];
@ -627,7 +627,7 @@ vs_scanline_resample_4tap_YUYV (uint8_t * dest, uint8_t * src,
dest[i * 4 + 1] = CLAMP (y >> SHIFT, 0, 255);
if (2 * i + 1 < n) {
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) {
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 3 - 4, 3)];
y += vs_4tap_taps[x][1] * src[j * 4 + 3];
y += vs_4tap_taps[x][2] * src[j * 4 + 3 + 4];
@ -810,7 +810,7 @@ vs_scanline_resample_4tap_UYVY (uint8_t * dest, uint8_t * src,
j = acc >> 17;
x = (acc & 0x1ffff) >> 9;
if (2 * (j - 2) >= 0 && 2 * (j + 4) < src_width) {
if (2 * j - 2 >= 0 && 2 * j + 4 < src_width) {
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 0 - 4, 0)];
y += vs_4tap_taps[x][1] * src[j * 4 + 0];
y += vs_4tap_taps[x][2] * src[j * 4 + 0 + 4];
@ -825,7 +825,7 @@ vs_scanline_resample_4tap_UYVY (uint8_t * dest, uint8_t * src,
dest[i * 4 + 0] = CLAMP (y >> SHIFT, 0, 255);
if (2 * i + 1 < n) {
if (2 * (j - 1) >= 0 && 2 * (j + 4) < src_width) {
if (2 * j - 1 >= 0 && 2 * j + 4 < src_width) {
y = vs_4tap_taps[x][0] * src[MAX (j * 4 + 2 - 4, 2)];
y += vs_4tap_taps[x][1] * src[j * 4 + 2];
y += vs_4tap_taps[x][2] * src[j * 4 + 2 + 4];

24
gst/videoscale/vs_scanline.c
View file

@ -377,11 +377,11 @@ vs_scanline_resample_nearest_YUYV (uint8_t * dest, uint8_t * src, int src_width,
j = acc >> 17;
x = acc & 0x1ffff;
dest[i * 4 + 1] = (x < 65536
|| 2 * (j + 2) >= src_width) ? src[j * 4 + 1] : src[j * 4 + 5];
|| 2 * j + 2 >= src_width) ? src[j * 4 + 1] : src[j * 4 + 5];
if (2 * i + 1 < n && 2 * (j + 1) < src_width)
if (2 * i + 1 < n && 2 * j + 1 < src_width)
dest[i * 4 + 3] = (x < 65536
|| 2 * (j + 3) >= src_width) ? src[j * 4 + 3] : src[j * 4 + 7];
|| 2 * j + 3 >= src_width) ? src[j * 4 + 3] : src[j * 4 + 7];
acc += increment;
@ -421,14 +421,14 @@ vs_scanline_resample_linear_YUYV (uint8_t * dest, uint8_t * src, int src_width,
j = acc >> 17;
x = acc & 0x1ffff;
if (2 * (j + 2) < src_width)
if (2 * j + 2 < src_width)
dest[i * 4 + 1] =
(src[j * 4 + 1] * (131072 - x) + src[j * 4 + 5] * x) >> 17;
else
dest[i * 4 + 1] = src[j * 4 + 1];
if (2 * i + 1 < n && 2 * (j + 1) < src_width) {
if (2 * (j + 3) < src_width)
if (2 * i + 1 < n && 2 * j + 1 < src_width) {
if (2 * j + 3 < src_width)
dest[i * 4 + 3] =
(src[j * 4 + 3] * (131072 - x) + src[j * 4 + 7] * x) >> 17;
else
@ -516,11 +516,11 @@ vs_scanline_resample_nearest_UYVY (uint8_t * dest, uint8_t * src, int src_width,
x = acc & 0x1ffff;
dest[i * 4 + 0] = (x < 65536
|| 2 * (j + 2) >= src_width) ? src[j * 4 + 0] : src[j * 4 + 4];
|| 2 * j + 2 >= src_width) ? src[j * 4 + 0] : src[j * 4 + 4];
if (2 * i + 1 < n && 2 * (j + 1) < src_width)
if (2 * i + 1 < n && 2 * j + 1 < src_width)
dest[i * 4 + 2] = (x < 65536
|| 2 * (j + 3) >= src_width) ? src[j * 4 + 2] : src[j * 4 + 6];
|| 2 * j + 3 >= src_width) ? src[j * 4 + 2] : src[j * 4 + 6];
acc += increment;
@ -559,14 +559,14 @@ vs_scanline_resample_linear_UYVY (uint8_t * dest, uint8_t * src, int src_width,
j = acc >> 17;
x = acc & 0x1ffff;
if (2 * (j + 2) < src_width)
if (2 * j + 2 < src_width)
dest[i * 4 + 0] =
(src[j * 4 + 0] * (131072 - x) + src[j * 4 + 4] * x) >> 17;
else
dest[i * 4 + 0] = src[j * 4 + 0];
if (i * 2 + 1 < n && 2 * (j + 1) < src_width) {
if (2 * (j + 3) < src_width)
if (i * 2 + 1 < n && 2 * j + 1 < src_width) {
if (2 * j + 3 < src_width)
dest[i * 4 + 2] =
(src[j * 4 + 2] * (131072 - x) + src[j * 4 + 6] * x) >> 17;
else