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videotestsrc: Fix image for odd widths in some formats

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videotestsrc rounds chroma down. This causes it to omit the last chroma
value completely for odd widths when the chroma is downsampled.
This patch special cases the last pixel to not be rounded down.
This commit is contained in:
Benjamin Otte 2009-09-10 10:08:28 +02:00
parent ce51263142
commit 35fdfcc625
1 changed files with 16 additions and 11 deletions
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27
gst/videotestsrc/videotestsrc.c
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@ -1471,13 +1471,15 @@ static void
paint_hline_I420 (paintinfo * p, int x, int y, int w)
{
int x1 = x / 2;
int x2 = (x + w) / 2;
int w1 = (x + w) / 2 - x1;
int offset = y * p->ystride;
int offset1 = (y / 2) * p->ustride;
if (x + w == p->width)
w1++;
oil_splat_u8_ns (p->yp + offset + x, &p->yuv_color->Y, w);
oil_splat_u8_ns (p->up + offset1 + x1, &p->yuv_color->U, x2 - x1);
oil_splat_u8_ns (p->vp + offset1 + x1, &p->yuv_color->V, x2 - x1);
oil_splat_u8_ns (p->up + offset1 + x1, &p->yuv_color->U, w1);
oil_splat_u8_ns (p->vp + offset1 + x1, &p->yuv_color->V, w1);
}
static void
@ -1688,13 +1690,14 @@ static void
paint_hline_YUY2 (paintinfo * p, int x, int y, int w)
{
int x1 = x / 2;
int x2 = (x + w) / 2;
int offset;
int w1 = (x + w) / 2 - x1;
int offset = y * p->ystride;
offset = y * p->ystride;
if (x + w == p->width)
w1++;
oil_splat_u8 (p->yp + offset + x * 2, 2, &p->yuv_color->Y, w);
oil_splat_u8 (p->up + offset + x1 * 4, 4, &p->yuv_color->U, x2 - x1);
oil_splat_u8 (p->vp + offset + x1 * 4, 4, &p->yuv_color->V, x2 - x1);
oil_splat_u8 (p->up + offset + x1 * 4, 4, &p->yuv_color->U, w1);
oil_splat_u8 (p->vp + offset + x1 * 4, 4, &p->yuv_color->V, w1);
}
static void
@ -1760,13 +1763,15 @@ static void
paint_hline_Y42B (paintinfo * p, int x, int y, int w)
{
int x1 = x / 2;
int x2 = (x + w) / 2;
int w1 = (x + w) / 2 - x1;
int offset = y * p->ystride;
int offset1 = y * p->ustride;
if (x + w == p->width)
w1++;
oil_splat_u8_ns (p->yp + offset + x, &p->yuv_color->Y, w);
oil_splat_u8_ns (p->up + offset1 + x1, &p->yuv_color->U, x2 - x1);
oil_splat_u8_ns (p->vp + offset1 + x1, &p->yuv_color->V, x2 - x1);
oil_splat_u8_ns (p->up + offset1 + x1, &p->yuv_color->U, w1);
oil_splat_u8_ns (p->vp + offset1 + x1, &p->yuv_color->V, w1);
}
static void