From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
This will just skip lines/pixels since color fidelity is not quite
as important here as it is with the test patterns themselves.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/platform/vivid/vivid-tpg.c | 27 ++++++++++++++++++++-------
1 file changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c
index 9001b9a..f03289f 100644
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -1183,24 +1183,37 @@ void tpg_gen_text(struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
div = 2;
for (p = 0; p < tpg->planes; p++) {
- /* Print stream time */
+ unsigned vdiv = tpg->vdownsampling[p];
+ unsigned hdiv = tpg->hdownsampling[p];
+
+ /* Print text */
#define PRINTSTR(PIXTYPE) do { \
PIXTYPE fg; \
PIXTYPE bg; \
memcpy(&fg, tpg->textfg[p], sizeof(PIXTYPE)); \
memcpy(&bg, tpg->textbg[p], sizeof(PIXTYPE)); \
\
- for (line = first; line < 16; line += step) { \
+ for (line = first; line < 16; line += vdiv * step) { \
int l = tpg->vflip ? 15 - line : line; \
- PIXTYPE *pos = (PIXTYPE *)(basep[p][line & 1] + \
- ((y * step + l) / div) * tpg->bytesperline[p] + \
- x * sizeof(PIXTYPE)); \
+ PIXTYPE *pos = (PIXTYPE *)(basep[p][(line / vdiv) & 1] + \
+ ((y * step + l) / (vdiv * div)) * tpg->bytesperline[p] + \
+ (x / hdiv) * sizeof(PIXTYPE)); \
unsigned s; \
\
for (s = 0; s < len; s++) { \
u8 chr = font8x16[text[s] * 16 + line]; \
\
- if (tpg->hflip) { \
+ if (hdiv == 2 && tpg->hflip) { \
+ pos[3] = (chr & (0x01 << 6) ? fg : bg); \
+ pos[2] = (chr & (0x01 << 4) ? fg : bg); \
+ pos[1] = (chr & (0x01 << 2) ? fg : bg); \
+ pos[0] = (chr & (0x01 << 0) ? fg : bg); \
+ } else if (hdiv == 2) { \
+ pos[0] = (chr & (0x01 << 7) ? fg : bg); \
+ pos[1] = (chr & (0x01 << 5) ? fg : bg); \
+ pos[2] = (chr & (0x01 << 3) ? fg : bg); \
+ pos[3] = (chr & (0x01 << 1) ? fg : bg); \
+ } else if (tpg->hflip) { \
pos[7] = (chr & (0x01 << 7) ? fg : bg); \
pos[6] = (chr & (0x01 << 6) ? fg : bg); \
pos[5] = (chr & (0x01 << 5) ? fg : bg); \
@@ -1220,7 +1233,7 @@ void tpg_gen_text(struct tpg_data *tpg, u8 *basep[TPG_MAX_PLANES][2],
pos[7] = (chr & (0x01 << 0) ? fg : bg); \
} \
\
- pos += tpg->hflip ? -8 : 8; \
+ pos += (tpg->hflip ? -8 : 8) / hdiv; \
} \
} \
} while (0)
--
2.1.4
--
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