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authorRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>2016-07-15 10:20:08 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-10-21 15:49:14 -0200
commit54fb15348385a1acf5a7bc1417bdd94c9d5115bb (patch)
treea7b2f90b3f93551a6bcb53b15c7950d8d4b8f6f5 /drivers/media/common
parent646895e9361af5ea501d0325f9b0251080a32854 (diff)
[media] vivid: Add support for HSV formats
This patch adds support for V4L2_PIX_FMT_HSV24 and V4L2_PIX_FMT_HSV32. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/common')
-rw-r--r--drivers/media/common/v4l2-tpg/v4l2-tpg-core.c93
1 files changed, 89 insertions, 4 deletions
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index c4153307bfc5..67e0aaf067b7 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -318,6 +318,10 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
tpg->hmask[0] = ~1;
tpg->color_enc = TGP_COLOR_ENC_YCBCR;
break;
+ case V4L2_PIX_FMT_HSV24:
+ case V4L2_PIX_FMT_HSV32:
+ tpg->color_enc = TGP_COLOR_ENC_HSV;
+ break;
default:
return false;
}
@@ -351,6 +355,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
break;
case V4L2_PIX_FMT_RGB24:
case V4L2_PIX_FMT_BGR24:
+ case V4L2_PIX_FMT_HSV24:
tpg->twopixelsize[0] = 2 * 3;
break;
case V4L2_PIX_FMT_BGR666:
@@ -361,6 +366,7 @@ bool tpg_s_fourcc(struct tpg_data *tpg, u32 fourcc)
case V4L2_PIX_FMT_ARGB32:
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_YUV32:
+ case V4L2_PIX_FMT_HSV32:
tpg->twopixelsize[0] = 2 * 4;
break;
case V4L2_PIX_FMT_NV12:
@@ -490,6 +496,64 @@ static inline int linear_to_rec709(int v)
return tpg_linear_to_rec709[v];
}
+static void color_to_hsv(struct tpg_data *tpg, int r, int g, int b,
+ int *h, int *s, int *v)
+{
+ int max_rgb, min_rgb, diff_rgb;
+ int aux;
+ int third;
+
+ r >>= 4;
+ g >>= 4;
+ b >>= 4;
+
+ /* Value */
+ max_rgb = max3(r, g, b);
+ *v = max_rgb;
+ if (!max_rgb) {
+ *h = 0;
+ *s = 0;
+ return;
+ }
+
+ /* Saturation */
+ min_rgb = min3(r, g, b);
+ diff_rgb = max_rgb - min_rgb;
+ aux = 255 * diff_rgb;
+ aux += max_rgb / 2;
+ aux /= max_rgb;
+ *s = aux;
+ if (!aux) {
+ *h = 0;
+ return;
+ }
+
+ /* Hue */
+ if (max_rgb == r) {
+ aux = g - b;
+ third = 0;
+ } else if (max_rgb == g) {
+ aux = b - r;
+ third = 60;
+ } else {
+ aux = r - g;
+ third = 120;
+ }
+
+ aux *= 30;
+ aux += diff_rgb / 2;
+ aux /= diff_rgb;
+ aux += third;
+
+ /* Clamp Hue */
+ if (aux < 0)
+ aux += 180;
+ else if (aux > 180)
+ aux -= 180;
+ *h = aux;
+
+}
+
static void rgb2ycbcr(const int m[3][3], int r, int g, int b,
int y_offset, int *y, int *cb, int *cr)
{
@@ -830,7 +894,19 @@ static void precalculate_color(struct tpg_data *tpg, int k)
ycbcr_to_color(tpg, y, cb, cr, &r, &g, &b);
}
- if (tpg->color_enc == TGP_COLOR_ENC_YCBCR) {
+ switch (tpg->color_enc) {
+ case TGP_COLOR_ENC_HSV:
+ {
+ int h, s, v;
+
+ color_to_hsv(tpg, r, g, b, &h, &s, &v);
+ tpg->colors[k][0] = h;
+ tpg->colors[k][1] = s;
+ tpg->colors[k][2] = v;
+ break;
+ }
+ case TGP_COLOR_ENC_YCBCR:
+ {
/* Convert to YCbCr */
int y, cb, cr;
@@ -864,7 +940,10 @@ static void precalculate_color(struct tpg_data *tpg, int k)
tpg->colors[k][0] = y;
tpg->colors[k][1] = cb;
tpg->colors[k][2] = cr;
- } else {
+ break;
+ }
+ case TGP_COLOR_ENC_RGB:
+ {
if (tpg->real_quantization == V4L2_QUANTIZATION_LIM_RANGE) {
r = (r * 219) / 255 + (16 << 4);
g = (g * 219) / 255 + (16 << 4);
@@ -914,6 +993,8 @@ static void precalculate_color(struct tpg_data *tpg, int k)
tpg->colors[k][0] = r;
tpg->colors[k][1] = g;
tpg->colors[k][2] = b;
+ break;
+ }
}
}
@@ -939,8 +1020,8 @@ static void gen_twopix(struct tpg_data *tpg,
alpha = 0;
if (color == TPG_COLOR_RANDOM)
precalculate_color(tpg, color);
- r_y = tpg->colors[color][0]; /* R or precalculated Y */
- g_u = tpg->colors[color][1]; /* G or precalculated U */
+ r_y = tpg->colors[color][0]; /* R or precalculated Y, H */
+ g_u = tpg->colors[color][1]; /* G or precalculated U, V */
b_v = tpg->colors[color][2]; /* B or precalculated V */
switch (tpg->fourcc) {
@@ -1122,6 +1203,7 @@ static void gen_twopix(struct tpg_data *tpg,
buf[0][offset + 1] = (g_u << 5) | b_v;
break;
case V4L2_PIX_FMT_RGB24:
+ case V4L2_PIX_FMT_HSV24:
buf[0][offset] = r_y;
buf[0][offset + 1] = g_u;
buf[0][offset + 2] = b_v;
@@ -1139,6 +1221,7 @@ static void gen_twopix(struct tpg_data *tpg,
break;
case V4L2_PIX_FMT_RGB32:
case V4L2_PIX_FMT_XRGB32:
+ case V4L2_PIX_FMT_HSV32:
alpha = 0;
/* fall through */
case V4L2_PIX_FMT_YUV32:
@@ -1895,6 +1978,8 @@ static const char *tpg_color_enc_str(enum tgp_color_enc
color_enc)
{
switch (color_enc) {
+ case TGP_COLOR_ENC_HSV:
+ return "HSV";
case TGP_COLOR_ENC_YCBCR:
return "Y'CbCr";
case TGP_COLOR_ENC_RGB: