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Commit 3e14e7a8 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] vivid-tpg: add hor/vert downsampling support to tpg_gen_text 



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: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 1f088dc1

drivers/media/platform/vivid/vivid-tpg.c

+20 −7
Original line number Diff line number Diff line
@@ -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)