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[media] v4l: mem2mem_testdev: Add horizontal and vertical flip

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Add horizontal and vertical flip to the mem2mem_testdev driver.
Flip modes can be enabled either separately or simultaneously.

Signed-off-by: Tomasz Moń <desowin@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Tomasz Moń 2012-06-12 06:43:49 -03:00 committed by Mauro Carvalho Chehab
parent e9da6b3ca5
commit 800728715c
1 changed files with 124 additions and 11 deletions
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135
drivers/media/video/mem2mem_testdev.c
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@ -60,6 +60,10 @@ MODULE_VERSION("0.1.1");
#define MEM2MEM_COLOR_STEP (0xff >> 4)
#define MEM2MEM_NUM_TILES 8
/* Flags that indicate processing mode */
#define MEM2MEM_HFLIP (1 << 0)
#define MEM2MEM_VFLIP (1 << 1)
#define dprintk(dev, fmt, arg...) \
v4l2_dbg(1, 1, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
@ -115,6 +119,24 @@ enum {
static struct v4l2_queryctrl m2mtest_ctrls[] = {
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mirror",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
.flags = 0,
}, {
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Vertical Mirror",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
.flags = 0,
}, {
.id = V4L2_CID_TRANS_TIME_MSEC,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Transaction time (msec)",
@ -181,6 +203,9 @@ struct m2mtest_ctx {
/* Abort requested by m2m */
int aborting;
/* Processing mode */
int mode;
struct v4l2_m2m_ctx *m2m_ctx;
/* Source and destination queue data */
@ -249,19 +274,84 @@ static int device_process(struct m2mtest_ctx *ctx,
bytes_left = bytesperline - tile_w * MEM2MEM_NUM_TILES;
w = 0;
for (y = 0; y < height; ++y) {
for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {
if (w & 0x1) {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ + MEM2MEM_COLOR_STEP;
} else {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ - MEM2MEM_COLOR_STEP;
switch (ctx->mode) {
case MEM2MEM_HFLIP | MEM2MEM_VFLIP:
p_out += bytesperline * height - bytes_left;
for (y = 0; y < height; ++y) {
for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {
if (w & 0x1) {
for (x = 0; x < tile_w; ++x)
*--p_out = *p_in++ +
MEM2MEM_COLOR_STEP;
} else {
for (x = 0; x < tile_w; ++x)
*--p_out = *p_in++ -
MEM2MEM_COLOR_STEP;
}
++w;
}
++w;
p_in += bytes_left;
p_out -= bytes_left;
}
break;
case MEM2MEM_HFLIP:
for (y = 0; y < height; ++y) {
p_out += MEM2MEM_NUM_TILES * tile_w;
for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {
if (w & 0x01) {
for (x = 0; x < tile_w; ++x)
*--p_out = *p_in++ +
MEM2MEM_COLOR_STEP;
} else {
for (x = 0; x < tile_w; ++x)
*--p_out = *p_in++ -
MEM2MEM_COLOR_STEP;
}
++w;
}
p_in += bytes_left;
p_out += bytesperline;
}
break;
case MEM2MEM_VFLIP:
p_out += bytesperline * (height - 1);
for (y = 0; y < height; ++y) {
for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {
if (w & 0x1) {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ +
MEM2MEM_COLOR_STEP;
} else {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ -
MEM2MEM_COLOR_STEP;
}
++w;
}
p_in += bytes_left;
p_out += bytes_left - 2 * bytesperline;
}
break;
default:
for (y = 0; y < height; ++y) {
for (t = 0; t < MEM2MEM_NUM_TILES; ++t) {
if (w & 0x1) {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ +
MEM2MEM_COLOR_STEP;
} else {
for (x = 0; x < tile_w; ++x)
*p_out++ = *p_in++ -
MEM2MEM_COLOR_STEP;
}
++w;
}
p_in += bytes_left;
p_out += bytes_left;
}
p_in += bytes_left;
p_out += bytes_left;
}
return 0;
@ -648,6 +738,14 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
struct m2mtest_ctx *ctx = priv;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
ctrl->value = (ctx->mode & MEM2MEM_HFLIP) ? 1 : 0;
break;
case V4L2_CID_VFLIP:
ctrl->value = (ctx->mode & MEM2MEM_VFLIP) ? 1 : 0;
break;
case V4L2_CID_TRANS_TIME_MSEC:
ctrl->value = ctx->transtime;
break;
@ -691,6 +789,20 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
return ret;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
if (ctrl->value)
ctx->mode |= MEM2MEM_HFLIP;
else
ctx->mode &= ~MEM2MEM_HFLIP;
break;
case V4L2_CID_VFLIP:
if (ctrl->value)
ctx->mode |= MEM2MEM_VFLIP;
else
ctx->mode &= ~MEM2MEM_VFLIP;
break;
case V4L2_CID_TRANS_TIME_MSEC:
ctx->transtime = ctrl->value;
break;
@ -861,6 +973,7 @@ static int m2mtest_open(struct file *file)
ctx->translen = MEM2MEM_DEF_TRANSLEN;
ctx->transtime = MEM2MEM_DEF_TRANSTIME;
ctx->num_processed = 0;
ctx->mode = 0;
ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0];
ctx->q_data[V4L2_M2M_DST].fmt = &formats[0];