static mp_obj_t py_image_draw_keypoints(mp_obj_t image_obj, mp_obj_t kpts_obj)
{
image_t *image = NULL;
py_kp_obj_t *kpts=NULL;
/* get pointer */
image = py_image_cobj(image_obj);
kpts = (py_kp_obj_t*)kpts_obj;
/* sanity checks */
PY_ASSERT_TRUE_MSG(image->bpp == 1,
"This function is only supported on GRAYSCALE images");
PY_ASSERT_TYPE(kpts_obj, &py_kp_type);
color_t cl = {.r=0xFF, .g=0xFF, .b=0xFF};
for (int i=0; i<kpts->size; i++) {
kp_t *kp = &kpts->kpts[i];
float co = arm_cos_f32(kp->angle);
float si = arm_sin_f32(kp->angle);
imlib_draw_line(image, kp->x, kp->y, kp->x+(co*10), kp->y+(si*10));
imlib_draw_circle(image, kp->x, kp->y, 4, &cl);
}
return mp_const_none;
}
static mp_obj_t py_image_find_blobs(mp_obj_t image_obj)
{
/* C stuff */
array_t *blobs;
struct image *image;
mp_obj_t blob_obj[6];
/* MP List */
mp_obj_t objects_list = mp_const_none;
/* get image pointer */
image = py_image_cobj(image_obj);
/* run color dector */
blobs = imlib_count_blobs(image);
/* Create empty Python list */
objects_list = mp_obj_new_list(0, NULL);
if (array_length(blobs)) {
for (int j=0; j<array_length(blobs); j++) {
blob_t *r = array_at(blobs, j);
blob_obj[0] = mp_obj_new_int(r->x);
blob_obj[1] = mp_obj_new_int(r->y);
blob_obj[2] = mp_obj_new_int(r->w);
blob_obj[3] = mp_obj_new_int(r->h);
blob_obj[4] = mp_obj_new_int(r->c);
blob_obj[5] = mp_obj_new_int(r->id);
mp_obj_list_append(objects_list, mp_obj_new_tuple(6, blob_obj));
}
}
array_free(blobs);
return objects_list;
}
static mp_obj_t py_image_draw_circle(mp_obj_t image_obj, mp_obj_t c_obj, mp_obj_t r_obj)
{
int cx, cy, r;
mp_obj_t *array;
struct image *image;
color_t c = {.r=0xFF, .g=0xFF, .b=0xFF};
/* get image pointer */
image = py_image_cobj(image_obj);
/* center */
mp_obj_get_array_fixed_n(c_obj, 2, &array);
cx = mp_obj_get_int(array[0]);
cy = mp_obj_get_int(array[1]);
/* radius */
r = mp_obj_get_int(r_obj);
imlib_draw_circle(image, cx, cy, r, &c);
return mp_const_none;
}
static mp_obj_t py_image_draw_string(uint n_args, const mp_obj_t *args)
{
int x = mp_obj_get_int(args[1]);
int y = mp_obj_get_int(args[2]);
image_t *image =py_image_cobj(args[0]);
const char *str = mp_obj_str_get_str(args[3]);
color_t c = {.r=0xFF, .g=0xFF, .b=0xFF};
// check x, y
PY_ASSERT_TRUE_MSG(x>=0 && x<image->w, "Image index out of range");
PY_ASSERT_TRUE_MSG(y>=0 && y<image->h, "Image index out of range");
PY_ASSERT_TRUE_MSG(image->bpp <= 2, "This function is not supported on JPEG images");
if (n_args == 5) {
// get color
mp_obj_t *array;
mp_obj_get_array_fixed_n(args[4], 3, &array);
c.r = mp_obj_get_int(array[0]);
c.g = mp_obj_get_int(array[1]);
c.b = mp_obj_get_int(array[2]);
}
imlib_draw_string(image, x, y, str, &c);
return mp_const_none;
}
static mp_obj_t py_image_erode(mp_obj_t image_obj, mp_obj_t ksize_obj)
{
image_t *image = NULL;
image = py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE_MSG(image->bpp == 1,
"This function is only supported on GRAYSCALE images");
imlib_erode(image, mp_obj_get_int(ksize_obj));
return mp_const_none;
}
static mp_obj_t py_image_blend(mp_obj_t dst_image_obj,
mp_obj_t src_image_obj, mp_obj_t param_obj)
{
int x,y;
float alpha;
image_t *src_image = NULL;
image_t *dst_image = NULL;
/* get C image pointer */
src_image = py_image_cobj(src_image_obj);
dst_image = py_image_cobj(dst_image_obj);
/* get x,y,alpha */
mp_obj_t *array;
mp_obj_get_array_fixed_n(param_obj, 3, &array);
x = mp_obj_get_int(array[0]);
y = mp_obj_get_int(array[1]);
alpha = mp_obj_get_float(array[2]);
if ((src_image->w+x)>dst_image->w ||
(src_image->h+y)>dst_image->h) {
printf("src image > dst image\n");
return mp_const_none;
}
imlib_blend(src_image, dst_image, x, y, (uint8_t)(alpha*256));
return mp_const_none;
}
static mp_obj_t py_image_save(uint n_args, const mp_obj_t *args, mp_map_t *kw_args)
{
int res;
image_t *image = py_image_cobj(args[0]);
const char *path = mp_obj_str_get_str(args[1]);
mp_map_elem_t *kw_subimage = mp_map_lookup(kw_args, MP_OBJ_NEW_QSTR(qstr_from_str("subimage")), MP_MAP_LOOKUP);
if (kw_subimage != NULL) {
mp_obj_t *array;
mp_obj_get_array_fixed_n(kw_subimage->value, 4, &array);
rectangle_t r = {
mp_obj_get_int(array[0]),
mp_obj_get_int(array[1]),
mp_obj_get_int(array[2]),
mp_obj_get_int(array[3]),
};
res = imlib_save_image(image, path, &r);
} else {
res = imlib_save_image(image, path, NULL);
}
if (res != FR_OK) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, ffs_strerror(res)));
}
return mp_const_true;
}
mp_obj_t py_imlib_detect_color(mp_obj_t image_obj, mp_obj_t color_obj, mp_obj_t threshold)
{
/* C stuff */
struct color color;
struct rectangle rectangle;
struct image *image;
/* sanity checks */
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_RGB565);
mp_obj_t *col_obj;
col_obj = mp_obj_get_array_fixed_n(color_obj, 3);
color.h = mp_obj_get_int(col_obj[0]);
color.s = mp_obj_get_int(col_obj[1]);
color.v = mp_obj_get_int(col_obj[2]);
/* get image pointer */
image = py_image_cobj(image_obj);
imlib_detect_color(image, &color, &rectangle, mp_obj_get_int(threshold));
mp_obj_t rec_obj[4];
rec_obj[0] = mp_obj_new_int(rectangle.x);
rec_obj[1] = mp_obj_new_int(rectangle.y);
rec_obj[2] = mp_obj_new_int(rectangle.w);
rec_obj[3] = mp_obj_new_int(rectangle.h);
return rt_build_tuple(4, rec_obj);
}
static mp_obj_t py_image_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) {
py_image_obj_t *o = self_in;
image_t *image = py_image_cobj(self_in);
if (value == MP_OBJ_NULL) {
// delete
return MP_OBJ_NULL; // op not supported
} else if (value == MP_OBJ_SENTINEL) {
// load
mp_uint_t pixel;
mp_uint_t index = mp_get_index(o->base.type, image->w*image->h, index_in, false);
switch (image->bpp) {
case 1:
pixel = image->pixels[index];
break;
case 2:
pixel = image->pixels[index*2]<<8 | image->pixels[index*2+1];
break;
default:
return MP_OBJ_NULL; // op not supported
}
return mp_obj_new_int(pixel);
} else {
// store
return mp_const_none;
}
}
mp_obj_t py_imlib_save_template(mp_obj_t image_obj, mp_obj_t rectangle_obj, mp_obj_t path_obj)
{
struct image t;
struct image *image = NULL;
struct rectangle r;
mp_obj_t *array;
const char *path = mp_obj_str_get_str(path_obj);
array = mp_obj_get_array_fixed_n(rectangle_obj, 4);
r.x = mp_obj_get_int(array[0]);
r.y = mp_obj_get_int(array[1]);
r.w = mp_obj_get_int(array[2]);
r.h = mp_obj_get_int(array[3]);
/* get C image pointer */
image = py_image_cobj(image_obj);
t.w = r.w;
t.h = r.h;
t.data = malloc(sizeof(*t.data)*t.w*t.h);
imlib_subimage(image, &t, r.x, r.y);
int res = imlib_save_template(&t, path);
free(t.data);
if (res != FR_OK) {
nlr_jump(mp_obj_new_exception_msg(qstr_from_str("Imlib"), ffs_strerror(res)));
}
return mp_const_true;
}
static mp_obj_t py_image_find_features(uint n_args, const mp_obj_t *args, mp_map_t *kw_args)
{
struct image *image = NULL;
struct cascade *cascade = NULL;
array_t *objects_array=NULL;
mp_obj_t objects_list = mp_const_none;
/* sanity checks */
PY_ASSERT_TRUE_MSG(sensor.pixformat == PIXFORMAT_GRAYSCALE,
"This function is only supported on GRAYSCALE images");
PY_ASSERT_TRUE_MSG(sensor.framesize <= OMV_MAX_INT_FRAME,
"This function is only supported on "OMV_MAX_INT_FRAME_STR" and smaller frames");
/* read arguments */
image = py_image_cobj(args[0]);
cascade = py_cascade_cobj(args[1]);
/* set some defaults */
cascade->threshold = 0.65f;
cascade->scale_factor = 1.65f;
/* read kw args */
mp_map_elem_t *kw_thresh = mp_map_lookup(kw_args, MP_OBJ_NEW_QSTR(qstr_from_str("threshold")), MP_MAP_LOOKUP);
if (kw_thresh != NULL) {
cascade->threshold = mp_obj_get_float(kw_thresh->value);
}
mp_map_elem_t *kw_scalef = mp_map_lookup(kw_args, MP_OBJ_NEW_QSTR(qstr_from_str("scale")), MP_MAP_LOOKUP);
if (kw_scalef != NULL) {
cascade->scale_factor = mp_obj_get_float(kw_scalef->value);
}
/* Detect objects */
objects_array = imlib_detect_objects(image, cascade);
/* Create empty Python list */
objects_list = mp_obj_new_list(0, NULL);
/* Add detected objects to the list */
for (int i=0; i<array_length(objects_array); i++) {
struct rectangle *r = array_at(objects_array, i);
mp_obj_t rec_obj[4] = {
mp_obj_new_int(r->x),
mp_obj_new_int(r->y),
mp_obj_new_int(r->w),
mp_obj_new_int(r->h),
};
mp_obj_list_append(objects_list, mp_obj_new_tuple(4, rec_obj));
}
/* Free the objects array */
array_free(objects_array);
return objects_list;
}
static mp_obj_t py_image_dilate(mp_obj_t image_obj, mp_obj_t ksize_obj)
{
image_t *image = NULL;
image = py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE(image->bpp==1);
imlib_dilate(image, mp_obj_get_int(ksize_obj));
return mp_const_none;
}
static mp_obj_t py_image_size(mp_obj_t self_in)
{
uint32_t len;
image_t *image = py_image_cobj(self_in);
if (image->bpp > 2) { //JPEG
len = image->bpp;
} else {
len = image->w*image->h*image->bpp;
}
return mp_obj_new_int(len);
}
static mp_obj_t py_image_dilate(mp_obj_t image_obj, mp_obj_t ksize_obj)
{
image_t *image = NULL;
image = py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE_MSG(image->bpp == 1,
"This function is only supported on GRAYSCALE images");
imlib_dilate(image, mp_obj_get_int(ksize_obj));
return mp_const_none;
}
static mp_obj_t py_image_histeq(mp_obj_t image_obj)
{
struct image *image;
/* get image pointer */
image = (struct image*) py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE(image->bpp == 1);
imlib_histeq(image);
return mp_const_none;
}
mp_obj_t py_imlib_histeq(mp_obj_t image_obj)
{
struct image *image;
/* get image pointer */
image = (struct image*) py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_GRAYSCALE);
imlib_histeq(image);
return mp_const_none;
}
static mp_obj_t py_image_invert(mp_obj_t image_obj)
{
image_t *image;
image = py_image_cobj(image_obj);
/* Sanity checks */
PY_ASSERT_TRUE(image->bpp == 1);
/* Threshold image */
imlib_invert(image);
return mp_const_none;
}
static mp_obj_t py_image_histeq(mp_obj_t image_obj)
{
struct image *image;
/* get image pointer */
image = (struct image*) py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE_MSG(image->bpp == 1,
"This function is only supported on GRAYSCALE images");
imlib_histeq(image);
return mp_const_none;
}
static mp_obj_t py_image_invert(mp_obj_t image_obj)
{
image_t *image;
image = py_image_cobj(image_obj);
/* Sanity checks */
PY_ASSERT_TRUE_MSG(image->bpp == 1,
"This function is only supported on GRAYSCALE images");
/* Threshold image */
imlib_invert(image);
return mp_const_none;
}
static mp_obj_t py_image_median(uint n_args, const mp_obj_t *args, mp_map_t *kw_args)
{
int ksize = 1;
/* get image pointer */
image_t *image = py_image_cobj(args[0]);
mp_map_elem_t *kw_ksize = mp_map_lookup(kw_args, MP_OBJ_NEW_QSTR(qstr_from_str("size")), MP_MAP_LOOKUP);
if (kw_ksize != NULL) {
ksize = mp_obj_get_int(kw_ksize->value);
}
imlib_median_filter(image, ksize);
return mp_const_none;
}
static mp_obj_t py_image_draw_line(mp_obj_t image_obj, mp_obj_t line_obj)
{
/* get image pointer */
struct image *image;
image = py_image_cobj(image_obj);
mp_obj_t *array;
mp_obj_get_array_fixed_n(line_obj, 4, &array);
int x0 = mp_obj_get_int(array[0]);
int y0 = mp_obj_get_int(array[1]);
int x1 = mp_obj_get_int(array[2]);
int y1 = mp_obj_get_int(array[3]);
imlib_draw_line(image, x0, y0, x1, y1);
return mp_const_none;
}
static mp_obj_t py_spi_write_image(mp_obj_t image_obj)
{
struct image *image;
/* get image pointer */
image = (struct image*) py_image_cobj(image_obj);
uint16_t *pixels = (uint16_t*)image->data;
for (int j=0;j<image->h;j++) {
for (int i=0;i<image->w;i++) {
uint16_t c = pixels[j*image->w+i];
spi_write(c);
spi_write(c>>8);
}
}
return mp_const_none;
}
static mp_obj_t py_image_binary(mp_obj_t image_obj, mp_obj_t threshold)
{
image_t *image;
/* sanity checks */
PY_ASSERT_TRUE(sensor.framesize <= FRAMESIZE_QCIF);
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_GRAYSCALE);
/* read arguments */
image = py_image_cobj(image_obj);
int thresh = mp_obj_get_int(threshold);
/* Threshold image */
imlib_binary(image, thresh);
return mp_const_none;
}
static mp_obj_t py_image_draw_rectangle(mp_obj_t image_obj, mp_obj_t rectangle_obj)
{
struct rectangle r;
struct image *image;
mp_obj_t *array;
mp_obj_get_array_fixed_n(rectangle_obj, 4, &array);
r.x = mp_obj_get_int(array[0]);
r.y = mp_obj_get_int(array[1]);
r.w = mp_obj_get_int(array[2]);
r.h = mp_obj_get_int(array[3]);
/* get image pointer */
image = py_image_cobj(image_obj);
imlib_draw_rectangle(image, &r);
return mp_const_none;
}
static mp_obj_t py_image_binary(mp_obj_t image_obj, mp_obj_t threshold)
{
image_t *image;
/* sanity checks */
PY_ASSERT_TRUE_MSG(sensor.pixformat == PIXFORMAT_GRAYSCALE,
"This function is only supported on GRAYSCALE images");
PY_ASSERT_TRUE_MSG(sensor.framesize <= OMV_MAX_RAW_FRAME,
"This function is only supported on "OMV_MAX_RAW_FRAME_STR" and smaller frames");
/* read arguments */
image = py_image_cobj(image_obj);
int thresh = mp_obj_get_int(threshold);
/* Threshold image */
imlib_binary(image, thresh);
return mp_const_none;
}
static mp_int_t py_image_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
image_t *image = py_image_cobj(self_in);
if (flags == MP_BUFFER_READ) {
bufinfo->buf = (void*)image->pixels;
if (image->bpp > 2) { //JPEG
bufinfo->len = image->bpp;
} else {
bufinfo->len = image->w*image->h*image->bpp;
}
bufinfo->typecode = 'b';
return 0;
} else {
// disable write for now
bufinfo->buf = NULL;
bufinfo->len = 0;
bufinfo->typecode = -1;
return 1;
}
}
mp_obj_t py_imlib_load_cascade(mp_obj_t path_obj)
{
py_cascade_obj_t *o =NULL;
/* detection parameters */
struct cascade cascade = {
.step = 2,
.scale_factor = 1.25f,
};
const char *path = mp_obj_str_get_str(path_obj);
int res = imlib_load_cascade(&cascade, path);
if (res != FR_OK) {
nlr_jump(mp_obj_new_exception_msg(qstr_from_str("Imlib"), ffs_strerror(res)));
}
o = m_new_obj(py_cascade_obj_t);
o->base.type = &py_cascade_type;
o->_cobj = cascade;
return o;
}
mp_obj_t py_imlib_load_template(mp_obj_t path_obj)
{
mp_obj_t image_obj =NULL;
struct image *image;
const char *path = mp_obj_str_get_str(path_obj);
image_obj = py_image(0, 0, 0, 0);
/* get image pointer */
image = py_image_cobj(image_obj);
int res = imlib_load_template(image, path);
if (res != FR_OK) {
nlr_jump(mp_obj_new_exception_msg(qstr_from_str("Imlib"), ffs_strerror(res)));
}
return image_obj;
}
mp_obj_t py_imlib_detect_objects(mp_obj_t image_obj, mp_obj_t cascade_obj)
{
struct image *image = NULL;
struct cascade *cascade = NULL;
struct array *objects_array=NULL;
mp_obj_t objects_list = mp_const_none;
/* sanity checks */
PY_ASSERT_TRUE(sensor.framesize <= FRAMESIZE_QQVGA);
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_GRAYSCALE);
/* get C image pointer */
image = py_image_cobj(image_obj);
/* get C cascade pointer */
cascade = py_cascade_cobj(cascade_obj);
/* detect objects */
objects_array = imlib_detect_objects(image, cascade);
int size = array_length(objects_array);
if (size) {
int i;
objects_list = rt_build_list(0, NULL);
for (i=0; i<size; i++) {
struct rectangle *r = array_at(objects_array, 0);
mp_obj_t rec_obj[4];
rec_obj[0] = mp_obj_new_int(r->x);
rec_obj[1] = mp_obj_new_int(r->y);
rec_obj[2] = mp_obj_new_int(r->w);
rec_obj[3] = mp_obj_new_int(r->h);
rt_list_append(objects_list, rt_build_tuple(4, rec_obj));
}
}
/* free objects array */
array_free(objects_array);
return objects_list;
}
static mp_obj_t py_sensor_snapshot() {
mp_obj_t image = py_image(0, 0, 0, 0);
sensor_snapshot((struct image*) py_image_cobj(image));
return image;
}
static mp_obj_t py_image_threshold(mp_obj_t image_obj, mp_obj_t color_list_obj, mp_obj_t threshold)
{
color_t *color;
image_t *image;
/* sanity checks */
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_RGB565);
PY_ASSERT_TRUE(sensor.framesize <= FRAMESIZE_QCIF);
/* read arguments */
image = py_image_cobj(image_obj);
int thresh = mp_obj_get_int(threshold);
/* returned image */
image_t bimage = {
.w=image->w,
.h=image->h,
.bpp=1,
.pixels=image->data+(image->w*image->h*image->bpp)
};
/* copy color list */
uint len;
mp_obj_t *color_arr;
mp_obj_get_array(color_list_obj, &len, &color_arr);
color = xalloc(len*sizeof*color);
for (int i=0; i<len; i++) {
mp_obj_t *color_obj;
mp_obj_get_array_fixed_n(color_arr[i], 3, &color_obj);
color[i].r = mp_obj_get_int(color_obj[0]);
color[i].g = mp_obj_get_int(color_obj[1]);
color[i].b = mp_obj_get_int(color_obj[2]);
}
/* Threshold image using reference color */
imlib_threshold(image, &bimage, color, len, thresh);
return py_image_from_struct(&bimage);
}
static mp_obj_t py_image_rainbow(mp_obj_t src_image_obj)
{
image_t *src_image = NULL;
/* get C image pointer */
src_image = py_image_cobj(src_image_obj);
/* sanity checks */
PY_ASSERT_TRUE(src_image->bpp==1);
image_t dst_image = {
.w=src_image->w,
.h=src_image->h,
.bpp=2,
.pixels=xalloc(src_image->w*src_image->h*2)
};
imlib_rainbow(src_image, &dst_image);
*src_image = dst_image;
return src_image_obj;
}
static mp_obj_t py_image_compress(mp_obj_t image_obj, mp_obj_t quality)
{
image_t *image = py_image_cobj(image_obj);
image_t cimage = {
.w=image->w,
.h=image->h,
.bpp=0,
.pixels= NULL
};
jpeg_compress(image, &cimage, mp_obj_get_int(quality));
return py_image_from_struct(&cimage);
}
static mp_obj_t py_image_draw_line(mp_obj_t image_obj, mp_obj_t line_obj)
{
/* get image pointer */
struct image *image;
image = py_image_cobj(image_obj);
mp_obj_t *array;
mp_obj_get_array_fixed_n(line_obj, 4, &array);
int x0 = mp_obj_get_int(array[0]);
int y0 = mp_obj_get_int(array[1]);
int x1 = mp_obj_get_int(array[2]);
int y1 = mp_obj_get_int(array[3]);
imlib_draw_line(image, x0, y0, x1, y1);
return mp_const_none;
}
static mp_obj_t py_image_draw_circle(mp_obj_t image_obj, mp_obj_t c_obj, mp_obj_t r_obj)
{
int cx, cy, r;
mp_obj_t *array;
struct image *image;
color_t c = {.r=0xFF, .g=0xFF, .b=0xFF};
/* get image pointer */
image = py_image_cobj(image_obj);
/* center */
mp_obj_get_array_fixed_n(c_obj, 2, &array);
cx = mp_obj_get_int(array[0]);
cy = mp_obj_get_int(array[1]);
/* radius */
r = mp_obj_get_int(r_obj);
imlib_draw_circle(image, cx, cy, r, &c);
return mp_const_none;
}
static mp_obj_t py_image_draw_string(uint n_args, const mp_obj_t *args)
{
int x = mp_obj_get_int(args[1]);
int y = mp_obj_get_int(args[2]);
image_t *image =py_image_cobj(args[0]);
const char *str = mp_obj_str_get_str(args[3]);
color_t c = {.r=0xFF, .g=0xFF, .b=0xFF};
if (n_args == 5) {
// get color
mp_obj_t *array;
mp_obj_get_array_fixed_n(args[4], 3, &array);
c.r = mp_obj_get_int(array[0]);
c.g = mp_obj_get_int(array[1]);
c.b = mp_obj_get_int(array[2]);
}
imlib_draw_string(image, x, y, str, &c);
return mp_const_none;
}
static mp_obj_t py_image_erode(mp_obj_t image_obj, mp_obj_t ksize_obj)
{
image_t *image = NULL;
image = py_image_cobj(image_obj);
/* sanity checks */
PY_ASSERT_TRUE(image->bpp==1);
imlib_erode(image, mp_obj_get_int(ksize_obj));
return mp_const_none;
}
static mp_obj_t py_lcd_display(uint n_args, const mp_obj_t *args, mp_map_t *kw_args)
{
image_t *arg_img = py_image_cobj(args[0]);
PY_ASSERT_TRUE_MSG(IM_IS_MUTABLE(arg_img), "Image format is not supported.");
rectangle_t rect;
py_helper_keyword_rectangle_roi(arg_img, n_args, args, 1, kw_args, &rect);
// Fit X.
int l_pad = 0, r_pad = 0;
if (rect.w > width) {
int adjust = rect.w - width;
rect.w -= adjust;
rect.x += adjust / 2;
} else if (rect.w < width) {
int adjust = width - rect.w;
l_pad = adjust / 2;
r_pad = (adjust + 1) / 2;
}
// Fit Y.
int t_pad = 0, b_pad = 0;
if (rect.h > height) {
int adjust = rect.h - height;
rect.h -= adjust;
rect.y += adjust / 2;
} else if (rect.h < height) {
int adjust = height - rect.h;
t_pad = adjust / 2;
b_pad = (adjust + 1) / 2;
}
switch (type) {
case LCD_NONE:
return mp_const_none;
case LCD_SHIELD:
lcd_write_command_byte(0x2C);
uint8_t *zero = fb_alloc0(width*2);
uint16_t *line = fb_alloc(width*2);
for (int i=0; i<t_pad; i++) {
lcd_write_data(width*2, zero);
}
for (int i=0; i<rect.h; i++) {
if (l_pad) {
lcd_write_data(l_pad*2, zero); // l_pad < width
}
if (IM_IS_GS(arg_img)) {
for (int j=0; j<rect.w; j++) {
uint8_t pixel = IM_GET_GS_PIXEL(arg_img, (rect.x + j), (rect.y + i));
line[j] = IM_RGB565(IM_R825(pixel),IM_G826(pixel),IM_B825(pixel));
}
lcd_write_data(rect.w*2, (uint8_t *) line);
} else {
lcd_write_data(rect.w*2, (uint8_t *)
(((uint16_t *) arg_img->pixels) +
((rect.y + i) * arg_img->w) + rect.x));
}
if (r_pad) {
lcd_write_data(r_pad*2, zero); // r_pad < width
}
}
for (int i=0; i<b_pad; i++) {
lcd_write_data(width*2, zero);
}
fb_free();
fb_free();
return mp_const_none;
}
return mp_const_none;
}
}
static mp_obj_t py_image_find_template(mp_obj_t image_obj, mp_obj_t template_obj, mp_obj_t threshold)
{
struct rectangle r;
struct image *image = NULL;
struct image *template = NULL;
mp_obj_t rec_obj[4];
mp_obj_t obj=mp_const_none;
/* sanity checks */
PY_ASSERT_TRUE(sensor.framesize <= FRAMESIZE_QQVGA);
PY_ASSERT_TRUE(sensor.pixformat == PIXFORMAT_GRAYSCALE);
/* get C image pointer */
image = py_image_cobj(image_obj);
template= py_image_cobj(template_obj);
float t = mp_obj_get_float(threshold);
/* look for object */
float corr = imlib_template_match(image, template, &r);
//printf("t:%f coor:%f\n", (double)t, (double)corr);
if (corr > t) {
rec_obj[0] = mp_obj_new_int(r.x);
rec_obj[1] = mp_obj_new_int(r.y);
rec_obj[2] = mp_obj_new_int(r.w);
rec_obj[3] = mp_obj_new_int(r.h);
obj = mp_obj_new_tuple(4, rec_obj);
}
return obj;
static mp_obj_t py_image_scale(mp_obj_t image_obj, mp_obj_t size_obj)
{
int w,h;
mp_obj_t *array;
image_t *src_image = NULL;
/* get C image pointer */
src_image = py_image_cobj(image_obj);
/* get x,y */
mp_obj_get_array_fixed_n(size_obj, 2, &array);
w = mp_obj_get_int(array[0]);
h = mp_obj_get_int(array[1]);
image_t dst_image = {
.w=w,
.h=h,
.bpp=src_image->bpp,
.pixels=xalloc(w*h*src_image->bpp)
};
imlib_scale(src_image, &dst_image, INTERP_BILINEAR);
*src_image = dst_image;
return image_obj;
}
static mp_obj_t py_image_scaled(mp_obj_t image_obj, mp_obj_t size_obj)
{
int w,h;
mp_obj_t *array;
image_t *src_image = NULL;
/* get C image pointer */
src_image = py_image_cobj(image_obj);
/* get x,y */
mp_obj_get_array_fixed_n(size_obj, 2, &array);
w = mp_obj_get_int(array[0]);
h = mp_obj_get_int(array[1]);
image_t dst_image = {
.w=w,
.h=h,
.bpp=src_image->bpp,
.pixels=xalloc(w*h*src_image->bpp)
};
imlib_scale(src_image, &dst_image, INTERP_NEAREST);
return py_image_from_struct(&dst_image);
}
static mp_obj_t py_image_subimg(mp_obj_t image_obj, mp_obj_t subimg_obj)
{
rectangle_t r;
image_t *image;
mp_obj_t *array;
/* image pointer */
image = py_image_cobj(image_obj);
/* sub image */
mp_obj_get_array_fixed_n(subimg_obj, 4, &array);
r.x = mp_obj_get_int(array[0]);
r.y = mp_obj_get_int(array[1]);
r.w = mp_obj_get_int(array[2]);
r.h = mp_obj_get_int(array[3]);
image_t subimg = {
.w=r.w,
.h=r.h,
.bpp=image->bpp,
.pixels=xalloc(r.w*r.h*image->bpp)
};
imlib_subimage(image, &subimg, r.x, r.y);
return py_image_from_struct(&subimg);
}
static mp_obj_t py_image_blit(mp_obj_t dst_image_obj, mp_obj_t src_image_obj, mp_obj_t offset_obj)
{
int x,y;
image_t *src_image = NULL;
image_t *dst_image = NULL;
/* get C image pointer */
src_image = py_image_cobj(src_image_obj);
dst_image = py_image_cobj(dst_image_obj);
/* get x,y */
mp_obj_t *array;
mp_obj_get_array_fixed_n(offset_obj, 2, &array);
x = mp_obj_get_int(array[0]);
y = mp_obj_get_int(array[1]);
if ((src_image->w+x)>dst_image->w ||
(src_image->h+y)>dst_image->h) {
printf("src image > dst image\n");
return mp_const_none;
}
imlib_blit(src_image, dst_image, x, y);
return mp_const_none;
}