[media] v4l: mem2mem_testdev: Add horizontal and vertical flip
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>
diff --git a/drivers/media/video/mem2mem_testdev.c b/drivers/media/video/mem2mem_testdev.c
index 3945556..f08cf38 100644
--- a/drivers/media/video/mem2mem_testdev.c
+++ b/drivers/media/video/mem2mem_testdev.c
@@ -60,6 +60,10 @@
#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 @@
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 @@
/* 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 @@
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;
}
- 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;
+ }
}
return 0;
@@ -648,6 +738,14 @@
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 @@
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 @@
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];