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videoscale: pick nearest line in scaling

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Use rounding to pick the nearest line instead of rounding down.
This commit is contained in:
Wim Taymans 2013-09-10 11:31:57 +02:00
parent 7b3ca538fd
commit c8cbcb6f02
1 changed files with 10 additions and 10 deletions
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20
gst/videoscale/vs_image.c
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@ -65,7 +65,7 @@ vs_image_scale_nearest_RGBA (const VSImage * dest, const VSImage * src,
acc = 0;
prev_j = -1;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
if (j == prev_j) {
memcpy (dest->pixels + i * dest->stride,
@ -160,7 +160,7 @@ vs_image_scale_nearest_RGB (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB (dest->pixels + i * dest->stride,
@ -290,7 +290,7 @@ vs_image_scale_nearest_YUYV (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_YUYV (dest->pixels + i * dest->stride,
@ -420,7 +420,7 @@ vs_image_scale_nearest_UYVY (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_UYVY (dest->pixels + i * dest->stride,
@ -550,7 +550,7 @@ vs_image_scale_nearest_NV12 (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_NV12 (dest->pixels + i * dest->stride,
@ -679,7 +679,7 @@ vs_image_scale_nearest_Y (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
video_scale_orc_resample_nearest_u8 (dest->pixels + i * dest->stride,
src->pixels + j * src->stride, 0, x_increment, dest->width);
@ -806,7 +806,7 @@ vs_image_scale_nearest_Y16 (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_Y16 (dest->pixels + i * dest->stride,
@ -936,7 +936,7 @@ vs_image_scale_nearest_RGB565 (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB565 (dest->pixels + i * dest->stride,
@ -1066,7 +1066,7 @@ vs_image_scale_nearest_RGB555 (const VSImage * dest, const VSImage * src,
acc = 0;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
xacc = 0;
vs_scanline_resample_nearest_RGB555 (dest->pixels + i * dest->stride,
@ -1196,7 +1196,7 @@ vs_image_scale_nearest_AYUV64 (const VSImage * dest, const VSImage * src,
acc = 0;
prev_j = -1;
for (i = 0; i < dest->height; i++) {
j = acc >> 16;
j = (acc + 0x8000) >> 16;
if (j == prev_j) {
memcpy (dest->pixels + i * dest->stride,