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spa/plugins/videotestsrc: Draw correctly for all resolutions

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Use an incremented variable to support all resolutions. If the width of
the pludge part of the test image was not dividable by three, a
rounding error made the resulting pattern containing noise.
This commit is contained in:
Linus Svensson 2016-11-16 13:59:32 +01:00 • committed by Wim Taymans
parent 740125a12e
commit cba22d0e39
1 changed files with 15 additions and 7 deletions
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22
spa/plugins/videotestsrc/draw.c
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@ -217,22 +217,30 @@ draw_smpte_snow (DrawingData *dd)
} }
for (i = y2; i < h; i++) { for (i = y2; i < h; i++) {
int x = 0;
/* negative I */ /* negative I */
draw_pixels (dd, 0 * w / 6, NEG_I, w / 6); draw_pixels (dd, x, NEG_I, w / 6);
x += w / 6;
/* white */ /* white */
draw_pixels (dd, 1 * w / 6, WHITE, w / 6); draw_pixels (dd, x, WHITE, w / 6);
x += w / 6;
/* positive Q */ /* positive Q */
draw_pixels (dd, 2 * w / 6, POS_Q, w / 6); draw_pixels (dd, x, POS_Q, w / 6);
x += w / 6;
/* pluge */ /* pluge */
draw_pixels (dd, 6 * w / 12, DARK_BLACK, w / 12); draw_pixels (dd, x, DARK_BLACK, w / 12);
draw_pixels (dd, 7 * w / 12, BLACK, w / 12); x += w / 12;
draw_pixels (dd, 8 * w / 12, LIGHT_BLACK, w / 12); draw_pixels (dd, x, BLACK, w / 12);
x += w / 12;
draw_pixels (dd, x, LIGHT_BLACK, w / 12);
x += w / 12;
/* war of the ants (a.k.a. snow) */ /* war of the ants (a.k.a. snow) */
for (j = 9 * w / 12; j < w; j++) { for (j = x; j < w; j++) {
Pixel p; Pixel p;
unsigned char r = rand (); unsigned char r = rand ();