From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
This is very useful for testing whether userspace can handle the various formats
correctly.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/video/vivi.c | 165 ++++++++++++++++++++++++++++++++++++--------
1 file changed, 135 insertions(+), 30 deletions(-)
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index d64d482..2a0198f 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -95,6 +95,16 @@ static struct vivi_fmt formats[] = {
.depth = 16,
},
{
+ .name = "4:2:2, packed, YVYU",
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .depth = 16,
+ },
+ {
+ .name = "4:2:2, packed, VYUY",
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .depth = 16,
+ },
+ {
.name = "RGB565 (LE)",
.fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
.depth = 16,
@@ -114,6 +124,26 @@ static struct vivi_fmt formats[] = {
.fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
.depth = 16,
},
+ {
+ .name = "RGB24 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
+ .depth = 24,
+ },
+ {
+ .name = "RGB24 (BE)",
+ .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
+ .depth = 24,
+ },
+ {
+ .name = "RGB32 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
+ .depth = 32,
+ },
+ {
+ .name = "RGB32 (BE)",
+ .fourcc = V4L2_PIX_FMT_BGR32, /* bgra */
+ .depth = 32,
+ },
};
static struct vivi_fmt *get_format(struct v4l2_format *f)
@@ -204,8 +234,9 @@ struct vivi_dev {
enum v4l2_field field;
unsigned int field_count;
- u8 bars[9][3];
- u8 line[MAX_WIDTH * 4];
+ u8 bars[9][3];
+ u8 line[MAX_WIDTH * 8];
+ unsigned int pixelsize;
};
/* ------------------------------------------------------------------
@@ -284,6 +315,8 @@ static void precalculate_bars(struct vivi_dev *dev)
switch (dev->fmt->fourcc) {
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YVYU:
+ case V4L2_PIX_FMT_VYUY:
is_yuv = 1;
break;
case V4L2_PIX_FMT_RGB565:
@@ -298,6 +331,11 @@ static void precalculate_bars(struct vivi_dev *dev)
g >>= 3;
b >>= 3;
break;
+ case V4L2_PIX_FMT_RGB24:
+ case V4L2_PIX_FMT_BGR24:
+ case V4L2_PIX_FMT_RGB32:
+ case V4L2_PIX_FMT_BGR32:
+ break;
}
if (is_yuv) {
@@ -317,7 +355,8 @@ static void precalculate_bars(struct vivi_dev *dev)
#define TSTAMP_INPUT_X 10
#define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X)
-static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
+/* 'odd' is true for pixels 1, 3, 5, etc. and false for pixels 0, 2, 4, etc. */
+static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos, bool odd)
{
u8 r_y, g_u, b_v;
int color;
@@ -327,46 +366,56 @@ static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
g_u = dev->bars[colorpos][1]; /* G or precalculated U */
b_v = dev->bars[colorpos][2]; /* B or precalculated V */
- for (color = 0; color < 4; color++) {
+ for (color = 0; color < dev->pixelsize; color++) {
p = buf + color;
switch (dev->fmt->fourcc) {
case V4L2_PIX_FMT_YUYV:
switch (color) {
case 0:
- case 2:
*p = r_y;
break;
case 1:
- *p = g_u;
- break;
- case 3:
- *p = b_v;
+ *p = odd ? b_v : g_u;
break;
}
break;
case V4L2_PIX_FMT_UYVY:
switch (color) {
+ case 0:
+ *p = odd ? b_v : g_u;
+ break;
case 1:
- case 3:
*p = r_y;
break;
+ }
+ break;
+ case V4L2_PIX_FMT_YVYU:
+ switch (color) {
+ case 0:
+ *p = r_y;
+ break;
+ case 1:
+ *p = odd ? g_u : b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_VYUY:
+ switch (color) {
case 0:
- *p = g_u;
+ *p = odd ? g_u : b_v;
break;
- case 2:
- *p = b_v;
+ case 1:
+ *p = r_y;
break;
}
break;
case V4L2_PIX_FMT_RGB565:
switch (color) {
case 0:
- case 2:
*p = (g_u << 5) | b_v;
break;
case 1:
- case 3:
*p = (r_y << 3) | (g_u >> 3);
break;
}
@@ -374,11 +423,9 @@ static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
case V4L2_PIX_FMT_RGB565X:
switch (color) {
case 0:
- case 2:
*p = (r_y << 3) | (g_u >> 3);
break;
case 1:
- case 3:
*p = (g_u << 5) | b_v;
break;
}
@@ -386,11 +433,9 @@ static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
case V4L2_PIX_FMT_RGB555:
switch (color) {
case 0:
- case 2:
*p = (g_u << 5) | b_v;
break;
case 1:
- case 3:
*p = (r_y << 2) | (g_u >> 3);
break;
}
@@ -398,15 +443,71 @@ static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
case V4L2_PIX_FMT_RGB555X:
switch (color) {
case 0:
- case 2:
*p = (r_y << 2) | (g_u >> 3);
break;
case 1:
- case 3:
*p = (g_u << 5) | b_v;
break;
}
break;
+ case V4L2_PIX_FMT_RGB24:
+ switch (color) {
+ case 0:
+ *p = r_y;
+ break;
+ case 1:
+ *p = g_u;
+ break;
+ case 2:
+ *p = b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_BGR24:
+ switch (color) {
+ case 0:
+ *p = b_v;
+ break;
+ case 1:
+ *p = g_u;
+ break;
+ case 2:
+ *p = r_y;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_RGB32:
+ switch (color) {
+ case 0:
+ *p = 0;
+ break;
+ case 1:
+ *p = r_y;
+ break;
+ case 2:
+ *p = g_u;
+ break;
+ case 3:
+ *p = b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_BGR32:
+ switch (color) {
+ case 0:
+ *p = b_v;
+ break;
+ case 1:
+ *p = g_u;
+ break;
+ case 2:
+ *p = r_y;
+ break;
+ case 3:
+ *p = 0;
+ break;
+ }
+ break;
}
}
}
@@ -415,10 +516,10 @@ static void precalculate_line(struct vivi_dev *dev)
{
int w;
- for (w = 0; w < dev->width * 2; w += 2) {
- int colorpos = (w / (dev->width / 8) % 8);
+ for (w = 0; w < dev->width * 2; w++) {
+ int colorpos = w / (dev->width / 8) % 8;
- gen_twopix(dev, dev->line + w * 2, colorpos);
+ gen_twopix(dev, dev->line + w * dev->pixelsize, colorpos, w & 1);
}
}
@@ -434,7 +535,7 @@ static void gen_text(struct vivi_dev *dev, char *basep,
/* Print stream time */
for (line = y; line < y + 16; line++) {
int j = 0;
- char *pos = basep + line * dev->width * 2 + x * 2;
+ char *pos = basep + line * dev->width * dev->pixelsize + x * dev->pixelsize;
char *s;
for (s = text; *s; s++) {
@@ -444,9 +545,9 @@ static void gen_text(struct vivi_dev *dev, char *basep,
for (i = 0; i < 7; i++, j++) {
/* Draw white font on black background */
if (chr & (1 << (7 - i)))
- gen_twopix(dev, pos + j * 2, WHITE);
+ gen_twopix(dev, pos + j * dev->pixelsize, WHITE, (x+y) & 1);
else
- gen_twopix(dev, pos + j * 2, TEXT_BLACK);
+ gen_twopix(dev, pos + j * dev->pixelsize, TEXT_BLACK, (x+y) & 1);
}
}
}
@@ -467,7 +568,9 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
return;
for (h = 0; h < hmax; h++)
- memcpy(vbuf + h * wmax * 2, dev->line + (dev->mv_count % wmax) * 2, wmax * 2);
+ memcpy(vbuf + h * wmax * dev->pixelsize,
+ dev->line + (dev->mv_count % wmax) * dev->pixelsize,
+ wmax * dev->pixelsize);
/* Updates stream time */
@@ -662,7 +765,7 @@ static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
struct vivi_dev *dev = vb2_get_drv_priv(vq);
unsigned long size;
- size = dev->width * dev->height * 2;
+ size = dev->width * dev->height * dev->pixelsize;
if (0 == *nbuffers)
*nbuffers = 32;
@@ -726,7 +829,7 @@ static int buffer_prepare(struct vb2_buffer *vb)
dev->height < 32 || dev->height > MAX_HEIGHT)
return -EINVAL;
- size = dev->width * dev->height * 2;
+ size = dev->width * dev->height * dev->pixelsize;
if (vb2_plane_size(vb, 0) < size) {
dprintk(dev, 1, "%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
@@ -920,6 +1023,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
}
dev->fmt = get_format(f);
+ dev->pixelsize = dev->fmt->depth / 8;
dev->width = f->fmt.pix.width;
dev->height = f->fmt.pix.height;
dev->field = f->fmt.pix.field;
@@ -1266,6 +1370,7 @@ static int __init vivi_create_instance(int inst)
dev->fmt = &formats[0];
dev->width = 640;
dev->height = 480;
+ dev->pixelsize = dev->fmt->depth / 8;
hdl = &dev->ctrl_handler;
v4l2_ctrl_handler_init(hdl, 11);
dev->volume = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
--
1.7.10
--
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