in common/v4l2-tpg/v4l2-tpg-core.c [1097:1505]
static void gen_twopix(struct tpg_data *tpg,
u8 buf[TPG_MAX_PLANES][8], int color, bool odd)
{
unsigned offset = odd * tpg->twopixelsize[0] / 2;
u8 alpha = tpg->alpha_component;
u8 r_y_h, g_u_s, b_v;
if (tpg->alpha_red_only && color != TPG_COLOR_CSC_RED &&
color != TPG_COLOR_100_RED &&
color != TPG_COLOR_75_RED)
alpha = 0;
if (color == TPG_COLOR_RANDOM)
precalculate_color(tpg, color);
r_y_h = tpg->colors[color][0]; /* R or precalculated Y, H */
g_u_s = tpg->colors[color][1]; /* G or precalculated U, V */
b_v = tpg->colors[color][2]; /* B or precalculated V */
switch (tpg->fourcc) {
case V4L2_PIX_FMT_GREY:
buf[0][offset] = r_y_h;
break;
case V4L2_PIX_FMT_Y10:
buf[0][offset] = (r_y_h << 2) & 0xff;
buf[0][offset+1] = r_y_h >> 6;
break;
case V4L2_PIX_FMT_Y12:
buf[0][offset] = (r_y_h << 4) & 0xff;
buf[0][offset+1] = r_y_h >> 4;
break;
case V4L2_PIX_FMT_Y16:
case V4L2_PIX_FMT_Z16:
/*
* Ideally both bytes should be set to r_y_h, but then you won't
* be able to detect endian problems. So keep it 0 except for
* the corner case where r_y_h is 0xff so white really will be
* white (0xffff).
*/
buf[0][offset] = r_y_h == 0xff ? r_y_h : 0;
buf[0][offset+1] = r_y_h;
break;
case V4L2_PIX_FMT_Y16_BE:
/* See comment for V4L2_PIX_FMT_Y16 above */
buf[0][offset] = r_y_h;
buf[0][offset+1] = r_y_h == 0xff ? r_y_h : 0;
break;
case V4L2_PIX_FMT_YUV422M:
case V4L2_PIX_FMT_YUV422P:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YUV420M:
buf[0][offset] = r_y_h;
if (odd) {
buf[1][0] = (buf[1][0] + g_u_s) / 2;
buf[2][0] = (buf[2][0] + b_v) / 2;
buf[1][1] = buf[1][0];
buf[2][1] = buf[2][0];
break;
}
buf[1][0] = g_u_s;
buf[2][0] = b_v;
break;
case V4L2_PIX_FMT_YVU422M:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_YVU420M:
buf[0][offset] = r_y_h;
if (odd) {
buf[1][0] = (buf[1][0] + b_v) / 2;
buf[2][0] = (buf[2][0] + g_u_s) / 2;
buf[1][1] = buf[1][0];
buf[2][1] = buf[2][0];
break;
}
buf[1][0] = b_v;
buf[2][0] = g_u_s;
break;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12M:
case V4L2_PIX_FMT_NV16:
case V4L2_PIX_FMT_NV16M:
buf[0][offset] = r_y_h;
if (odd) {
buf[1][0] = (buf[1][0] + g_u_s) / 2;
buf[1][1] = (buf[1][1] + b_v) / 2;
break;
}
buf[1][0] = g_u_s;
buf[1][1] = b_v;
break;
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV21M:
case V4L2_PIX_FMT_NV61:
case V4L2_PIX_FMT_NV61M:
buf[0][offset] = r_y_h;
if (odd) {
buf[1][0] = (buf[1][0] + b_v) / 2;
buf[1][1] = (buf[1][1] + g_u_s) / 2;
break;
}
buf[1][0] = b_v;
buf[1][1] = g_u_s;
break;
case V4L2_PIX_FMT_YUV444M:
buf[0][offset] = r_y_h;
buf[1][offset] = g_u_s;
buf[2][offset] = b_v;
break;
case V4L2_PIX_FMT_YVU444M:
buf[0][offset] = r_y_h;
buf[1][offset] = b_v;
buf[2][offset] = g_u_s;
break;
case V4L2_PIX_FMT_NV24:
buf[0][offset] = r_y_h;
buf[1][2 * offset] = g_u_s;
buf[1][(2 * offset + 1) % 8] = b_v;
break;
case V4L2_PIX_FMT_NV42:
buf[0][offset] = r_y_h;
buf[1][2 * offset] = b_v;
buf[1][(2 * offset + 1) % 8] = g_u_s;
break;
case V4L2_PIX_FMT_YUYV:
buf[0][offset] = r_y_h;
if (odd) {
buf[0][1] = (buf[0][1] + g_u_s) / 2;
buf[0][3] = (buf[0][3] + b_v) / 2;
break;
}
buf[0][1] = g_u_s;
buf[0][3] = b_v;
break;
case V4L2_PIX_FMT_UYVY:
buf[0][offset + 1] = r_y_h;
if (odd) {
buf[0][0] = (buf[0][0] + g_u_s) / 2;
buf[0][2] = (buf[0][2] + b_v) / 2;
break;
}
buf[0][0] = g_u_s;
buf[0][2] = b_v;
break;
case V4L2_PIX_FMT_YVYU:
buf[0][offset] = r_y_h;
if (odd) {
buf[0][1] = (buf[0][1] + b_v) / 2;
buf[0][3] = (buf[0][3] + g_u_s) / 2;
break;
}
buf[0][1] = b_v;
buf[0][3] = g_u_s;
break;
case V4L2_PIX_FMT_VYUY:
buf[0][offset + 1] = r_y_h;
if (odd) {
buf[0][0] = (buf[0][0] + b_v) / 2;
buf[0][2] = (buf[0][2] + g_u_s) / 2;
break;
}
buf[0][0] = b_v;
buf[0][2] = g_u_s;
break;
case V4L2_PIX_FMT_RGB332:
buf[0][offset] = (r_y_h << 5) | (g_u_s << 2) | b_v;
break;
case V4L2_PIX_FMT_YUV565:
case V4L2_PIX_FMT_RGB565:
buf[0][offset] = (g_u_s << 5) | b_v;
buf[0][offset + 1] = (r_y_h << 3) | (g_u_s >> 3);
break;
case V4L2_PIX_FMT_RGB565X:
buf[0][offset] = (r_y_h << 3) | (g_u_s >> 3);
buf[0][offset + 1] = (g_u_s << 5) | b_v;
break;
case V4L2_PIX_FMT_RGB444:
case V4L2_PIX_FMT_XRGB444:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_YUV444:
case V4L2_PIX_FMT_ARGB444:
buf[0][offset] = (g_u_s << 4) | b_v;
buf[0][offset + 1] = (alpha & 0xf0) | r_y_h;
break;
case V4L2_PIX_FMT_RGBX444:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_RGBA444:
buf[0][offset] = (b_v << 4) | (alpha >> 4);
buf[0][offset + 1] = (r_y_h << 4) | g_u_s;
break;
case V4L2_PIX_FMT_XBGR444:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_ABGR444:
buf[0][offset] = (g_u_s << 4) | r_y_h;
buf[0][offset + 1] = (alpha & 0xf0) | b_v;
break;
case V4L2_PIX_FMT_BGRX444:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_BGRA444:
buf[0][offset] = (r_y_h << 4) | (alpha >> 4);
buf[0][offset + 1] = (b_v << 4) | g_u_s;
break;
case V4L2_PIX_FMT_RGB555:
case V4L2_PIX_FMT_XRGB555:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_YUV555:
case V4L2_PIX_FMT_ARGB555:
buf[0][offset] = (g_u_s << 5) | b_v;
buf[0][offset + 1] = (alpha & 0x80) | (r_y_h << 2)
| (g_u_s >> 3);
break;
case V4L2_PIX_FMT_RGBX555:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_RGBA555:
buf[0][offset] = (g_u_s << 6) | (b_v << 1) |
((alpha & 0x80) >> 7);
buf[0][offset + 1] = (r_y_h << 3) | (g_u_s >> 2);
break;
case V4L2_PIX_FMT_XBGR555:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_ABGR555:
buf[0][offset] = (g_u_s << 5) | r_y_h;
buf[0][offset + 1] = (alpha & 0x80) | (b_v << 2)
| (g_u_s >> 3);
break;
case V4L2_PIX_FMT_BGRX555:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_BGRA555:
buf[0][offset] = (g_u_s << 6) | (r_y_h << 1) |
((alpha & 0x80) >> 7);
buf[0][offset + 1] = (b_v << 3) | (g_u_s >> 2);
break;
case V4L2_PIX_FMT_RGB555X:
case V4L2_PIX_FMT_XRGB555X:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_ARGB555X:
buf[0][offset] = (alpha & 0x80) | (r_y_h << 2) | (g_u_s >> 3);
buf[0][offset + 1] = (g_u_s << 5) | b_v;
break;
case V4L2_PIX_FMT_RGB24:
case V4L2_PIX_FMT_HSV24:
buf[0][offset] = r_y_h;
buf[0][offset + 1] = g_u_s;
buf[0][offset + 2] = b_v;
break;
case V4L2_PIX_FMT_BGR24:
buf[0][offset] = b_v;
buf[0][offset + 1] = g_u_s;
buf[0][offset + 2] = r_y_h;
break;
case V4L2_PIX_FMT_BGR666:
buf[0][offset] = (b_v << 2) | (g_u_s >> 4);
buf[0][offset + 1] = (g_u_s << 4) | (r_y_h >> 2);
buf[0][offset + 2] = r_y_h << 6;
buf[0][offset + 3] = 0;
break;
case V4L2_PIX_FMT_RGB32:
case V4L2_PIX_FMT_XRGB32:
case V4L2_PIX_FMT_HSV32:
case V4L2_PIX_FMT_XYUV32:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_YUV32:
case V4L2_PIX_FMT_ARGB32:
case V4L2_PIX_FMT_AYUV32:
buf[0][offset] = alpha;
buf[0][offset + 1] = r_y_h;
buf[0][offset + 2] = g_u_s;
buf[0][offset + 3] = b_v;
break;
case V4L2_PIX_FMT_RGBX32:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_RGBA32:
buf[0][offset] = r_y_h;
buf[0][offset + 1] = g_u_s;
buf[0][offset + 2] = b_v;
buf[0][offset + 3] = alpha;
break;
case V4L2_PIX_FMT_BGR32:
case V4L2_PIX_FMT_XBGR32:
case V4L2_PIX_FMT_VUYX32:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_VUYA32:
buf[0][offset] = b_v;
buf[0][offset + 1] = g_u_s;
buf[0][offset + 2] = r_y_h;
buf[0][offset + 3] = alpha;
break;
case V4L2_PIX_FMT_BGRX32:
alpha = 0;
fallthrough;
case V4L2_PIX_FMT_BGRA32:
buf[0][offset] = alpha;
buf[0][offset + 1] = b_v;
buf[0][offset + 2] = g_u_s;
buf[0][offset + 3] = r_y_h;
break;
case V4L2_PIX_FMT_SBGGR8:
buf[0][offset] = odd ? g_u_s : b_v;
buf[1][offset] = odd ? r_y_h : g_u_s;
break;
case V4L2_PIX_FMT_SGBRG8:
buf[0][offset] = odd ? b_v : g_u_s;
buf[1][offset] = odd ? g_u_s : r_y_h;
break;
case V4L2_PIX_FMT_SGRBG8:
buf[0][offset] = odd ? r_y_h : g_u_s;
buf[1][offset] = odd ? g_u_s : b_v;
break;
case V4L2_PIX_FMT_SRGGB8:
buf[0][offset] = odd ? g_u_s : r_y_h;
buf[1][offset] = odd ? b_v : g_u_s;
break;
case V4L2_PIX_FMT_SBGGR10:
buf[0][offset] = odd ? g_u_s << 2 : b_v << 2;
buf[0][offset + 1] = odd ? g_u_s >> 6 : b_v >> 6;
buf[1][offset] = odd ? r_y_h << 2 : g_u_s << 2;
buf[1][offset + 1] = odd ? r_y_h >> 6 : g_u_s >> 6;
buf[0][offset] |= (buf[0][offset] >> 2) & 3;
buf[1][offset] |= (buf[1][offset] >> 2) & 3;
break;
case V4L2_PIX_FMT_SGBRG10:
buf[0][offset] = odd ? b_v << 2 : g_u_s << 2;
buf[0][offset + 1] = odd ? b_v >> 6 : g_u_s >> 6;
buf[1][offset] = odd ? g_u_s << 2 : r_y_h << 2;
buf[1][offset + 1] = odd ? g_u_s >> 6 : r_y_h >> 6;
buf[0][offset] |= (buf[0][offset] >> 2) & 3;
buf[1][offset] |= (buf[1][offset] >> 2) & 3;
break;
case V4L2_PIX_FMT_SGRBG10:
buf[0][offset] = odd ? r_y_h << 2 : g_u_s << 2;
buf[0][offset + 1] = odd ? r_y_h >> 6 : g_u_s >> 6;
buf[1][offset] = odd ? g_u_s << 2 : b_v << 2;
buf[1][offset + 1] = odd ? g_u_s >> 6 : b_v >> 6;
buf[0][offset] |= (buf[0][offset] >> 2) & 3;
buf[1][offset] |= (buf[1][offset] >> 2) & 3;
break;
case V4L2_PIX_FMT_SRGGB10:
buf[0][offset] = odd ? g_u_s << 2 : r_y_h << 2;
buf[0][offset + 1] = odd ? g_u_s >> 6 : r_y_h >> 6;
buf[1][offset] = odd ? b_v << 2 : g_u_s << 2;
buf[1][offset + 1] = odd ? b_v >> 6 : g_u_s >> 6;
buf[0][offset] |= (buf[0][offset] >> 2) & 3;
buf[1][offset] |= (buf[1][offset] >> 2) & 3;
break;
case V4L2_PIX_FMT_SBGGR12:
buf[0][offset] = odd ? g_u_s << 4 : b_v << 4;
buf[0][offset + 1] = odd ? g_u_s >> 4 : b_v >> 4;
buf[1][offset] = odd ? r_y_h << 4 : g_u_s << 4;
buf[1][offset + 1] = odd ? r_y_h >> 4 : g_u_s >> 4;
buf[0][offset] |= (buf[0][offset] >> 4) & 0xf;
buf[1][offset] |= (buf[1][offset] >> 4) & 0xf;
break;
case V4L2_PIX_FMT_SGBRG12:
buf[0][offset] = odd ? b_v << 4 : g_u_s << 4;
buf[0][offset + 1] = odd ? b_v >> 4 : g_u_s >> 4;
buf[1][offset] = odd ? g_u_s << 4 : r_y_h << 4;
buf[1][offset + 1] = odd ? g_u_s >> 4 : r_y_h >> 4;
buf[0][offset] |= (buf[0][offset] >> 4) & 0xf;
buf[1][offset] |= (buf[1][offset] >> 4) & 0xf;
break;
case V4L2_PIX_FMT_SGRBG12:
buf[0][offset] = odd ? r_y_h << 4 : g_u_s << 4;
buf[0][offset + 1] = odd ? r_y_h >> 4 : g_u_s >> 4;
buf[1][offset] = odd ? g_u_s << 4 : b_v << 4;
buf[1][offset + 1] = odd ? g_u_s >> 4 : b_v >> 4;
buf[0][offset] |= (buf[0][offset] >> 4) & 0xf;
buf[1][offset] |= (buf[1][offset] >> 4) & 0xf;
break;
case V4L2_PIX_FMT_SRGGB12:
buf[0][offset] = odd ? g_u_s << 4 : r_y_h << 4;
buf[0][offset + 1] = odd ? g_u_s >> 4 : r_y_h >> 4;
buf[1][offset] = odd ? b_v << 4 : g_u_s << 4;
buf[1][offset + 1] = odd ? b_v >> 4 : g_u_s >> 4;
buf[0][offset] |= (buf[0][offset] >> 4) & 0xf;
buf[1][offset] |= (buf[1][offset] >> 4) & 0xf;
break;
case V4L2_PIX_FMT_SBGGR16:
buf[0][offset] = buf[0][offset + 1] = odd ? g_u_s : b_v;
buf[1][offset] = buf[1][offset + 1] = odd ? r_y_h : g_u_s;
break;
case V4L2_PIX_FMT_SGBRG16:
buf[0][offset] = buf[0][offset + 1] = odd ? b_v : g_u_s;
buf[1][offset] = buf[1][offset + 1] = odd ? g_u_s : r_y_h;
break;
case V4L2_PIX_FMT_SGRBG16:
buf[0][offset] = buf[0][offset + 1] = odd ? r_y_h : g_u_s;
buf[1][offset] = buf[1][offset + 1] = odd ? g_u_s : b_v;
break;
case V4L2_PIX_FMT_SRGGB16:
buf[0][offset] = buf[0][offset + 1] = odd ? g_u_s : r_y_h;
buf[1][offset] = buf[1][offset + 1] = odd ? b_v : g_u_s;
break;
}
}