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#include <stdlib.h>
#include <string.h>
#include "uca.h"
#include "uca-cam.h"
#include "uca-grabber.h"
struct dummy_cam_t {
uint32_t bitdepth;
uint32_t framerate;
char* buffer;
};
#define GET_DUMMY(uca) ((struct dummy_cam_t *)(uca->user))
#define set_void(p, type, value) { *((type *) p) = value; }
static uint32_t uca_dummy_set_property(struct uca_camera *cam, enum uca_property_ids property, void *data)
{
return UCA_NO_ERROR;
}
static uint32_t uca_dummy_get_property(struct uca_camera *cam, enum uca_property_ids property, void *data, size_t num)
{
switch (property) {
case UCA_PROP_NAME:
strncpy((char *) data, "dummy", num);
break;
case UCA_PROP_WIDTH:
set_void(data, uint32_t, cam->frame_width);
break;
case UCA_PROP_WIDTH_MIN:
set_void(data, uint32_t, 1);
break;
case UCA_PROP_WIDTH_MAX:
set_void(data, uint32_t, 4096);
break;
case UCA_PROP_HEIGHT:
set_void(data, uint32_t, cam->frame_height);
break;
case UCA_PROP_HEIGHT_MIN:
set_void(data, uint32_t, 1);
break;
case UCA_PROP_HEIGHT_MAX:
set_void(data, uint32_t, 4096);
break;
case UCA_PROP_BITDEPTH:
set_void(data, uint32_t, 8);
break;
default:
return UCA_ERR_PROP_INVALID;
}
return UCA_NO_ERROR;
}
uint32_t uca_dummy_start_recording(struct uca_camera *cam)
{
cam->current_frame = 0;
return UCA_NO_ERROR;
}
uint32_t uca_dummy_stop_recording(struct uca_camera *cam)
{
return UCA_NO_ERROR;
}
static const char digits[10][20] = {
/* 0 */
{ 0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0xff, 0x00, 0x00, 0xff,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0x00 },
/* 1 */
{ 0x00, 0x00, 0xff, 0x00,
0x00, 0xff, 0xff, 0x00,
0x00, 0x00, 0xff, 0x00,
0x00, 0x00, 0xff, 0x00,
0x00, 0x00, 0xff, 0x00 },
/* 2 */
{ 0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0x00, 0xff, 0x00,
0x00, 0xff, 0x00, 0x00,
0xff, 0xff, 0xff, 0xff },
/* 3 */
{ 0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0x00, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0x00 },
/* 4 */
{ 0xff, 0x00, 0x00, 0x00,
0xff, 0x00, 0x00, 0xff,
0xff, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0xff,
0x00, 0x00, 0x00, 0xff },
/* 5 */
{ 0xff, 0xff, 0xff, 0xff,
0xff, 0x00, 0x00, 0x00,
0x00, 0xff, 0xff, 0x00,
0x00, 0x00, 0x00, 0xff,
0xff, 0xff, 0xff, 0x00 },
/* 6 */
{ 0x00, 0xff, 0xff, 0xff,
0xff, 0x00, 0x00, 0x00,
0xff, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0x00 },
/* 7 */
{ 0xff, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0xff,
0x00, 0x00, 0xff, 0x00,
0x00, 0xff, 0x00, 0x00,
0xff, 0x00, 0x00, 0x00 },
/* 8 */
{ 0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0x00 },
/* 9 */
{ 0x00, 0xff, 0xff, 0x00,
0xff, 0x00, 0x00, 0xff,
0x00, 0xff, 0xff, 0xff,
0x00, 0x00, 0x00, 0xff,
0xff, 0xff, 0xff, 0x00 }
};
static void uca_dummy_print_number(struct dummy_cam_t *dummy, int number, int x, int y, int width)
{
const int digit_width = 4;
const int digit_height = 5;
char *buffer = dummy->buffer;
for (int i = 0; i < digit_width; i++) {
for (int j = 0; j < digit_height; j++) {
buffer[(y+j)*width + (x+i)] = digits[number][j*digit_width+i];
}
}
}
uint32_t uca_dummy_grab(struct uca_camera *cam, char *buffer)
{
struct dummy_cam_t *dummy = GET_DUMMY(cam);
dummy->buffer = buffer;
/* print current frame number */
unsigned int number = cam->current_frame;
unsigned int divisor = 100000000;
int x = 10;
while (divisor > 1) {
uca_dummy_print_number(dummy, number / divisor, x, 10, cam->frame_width);
number = number % divisor;
divisor = divisor / 10;
x += 5;
}
cam->current_frame++;
return UCA_NO_ERROR;
}
static uint32_t uca_dummy_destroy(struct uca_camera *cam)
{
return UCA_NO_ERROR;
}
uint32_t uca_dummy_init(struct uca_camera **cam, struct uca_grabber *grabber)
{
struct uca_camera *uca = (struct uca_camera *) malloc(sizeof(struct uca_camera));
uca->destroy = &uca_dummy_destroy;
uca->set_property = &uca_dummy_set_property;
uca->get_property = &uca_dummy_get_property;
uca->start_recording = &uca_dummy_start_recording;
uca->stop_recording = &uca_dummy_stop_recording;
uca->grab = &uca_dummy_grab;
uca->state = UCA_CAM_CONFIGURABLE;
uca->frame_width = 320;
uca->frame_height = 240;
uca->current_frame = 0;
struct dummy_cam_t *dummy_cam = (struct dummy_cam_t *) malloc(sizeof(struct dummy_cam_t));
dummy_cam->bitdepth = 8;
dummy_cam->framerate = 100;
dummy_cam->buffer = NULL;
uca->user = dummy_cam;
*cam = uca;
return UCA_NO_ERROR;
}
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