djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add reverse_rows option to bitmaptools.readinto

Browse Source
This commit is contained in:
Kevin Matocha 2021-03-16 10:01:12 -05:00
parent 542fb58673
commit 227ac67463
3 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
shared-bindings/bitmaptools/__init__.c
View File

@ -456,7 +456,7 @@ MP_DEFINE_CONST_FUN_OBJ_KW(bitmaptools_arrayblit_obj, 0, bitmaptools_arrayblit);
//|
STATIC mp_obj_t bitmaptools_readinto(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
enum { ARG_bitmap, ARG_file, ARG_bits_per_pixel, ARG_element_size, ARG_reverse_pixels_in_element, ARG_swap_bytes_in_element };
enum { ARG_bitmap, ARG_file, ARG_bits_per_pixel, ARG_element_size, ARG_reverse_pixels_in_element, ARG_swap_bytes_in_element, ARG_reverse_rows };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_bitmap, MP_ARG_REQUIRED | MP_ARG_OBJ },
{ MP_QSTR_file, MP_ARG_REQUIRED | MP_ARG_OBJ },
@ -464,6 +464,7 @@ STATIC mp_obj_t bitmaptools_readinto(size_t n_args, const mp_obj_t *pos_args, mp
{ MP_QSTR_element_size, MP_ARG_INT, { .u_int = 1 } },
{ MP_QSTR_reverse_pixels_in_element, MP_ARG_BOOL, { .u_bool = false } },
{ MP_QSTR_swap_bytes_in_element, MP_ARG_BOOL, { .u_bool = false } },
{ MP_QSTR_reverse_rows, MP_ARG_BOOL, { .u_bool = false } },
};
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
@ -504,8 +505,9 @@ STATIC mp_obj_t bitmaptools_readinto(size_t n_args, const mp_obj_t *pos_args, mp
bool reverse_pixels_in_element = args[ARG_reverse_pixels_in_element].u_bool;
bool swap_bytes_in_element = args[ARG_swap_bytes_in_element].u_bool;
bool reverse_rows = args[ARG_reverse_rows].u_bool;
common_hal_bitmaptools_readinto(bitmap, file, element_size, bits_per_pixel, reverse_pixels_in_element, swap_bytes_in_element);
common_hal_bitmaptools_readinto(bitmap, file, element_size, bits_per_pixel, reverse_pixels_in_element, swap_bytes_in_element, reverse_rows);
return mp_const_none;
}

2
shared-bindings/bitmaptools/__init__.h
View File

@ -51,7 +51,7 @@ void common_hal_bitmaptools_draw_line(displayio_bitmap_t *destination,
int16_t x1, int16_t y1,
uint32_t value);
void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* file, int element_size, int bits_per_pixel, bool reverse_pixels_in_word, bool swap_bytes);
void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* file, int element_size, int bits_per_pixel, bool reverse_pixels_in_word, bool swap_bytes, bool reverse_rows);
void common_hal_bitmaptools_arrayblit(displayio_bitmap_t *self, void *data, int element_size, int x1, int y1, int x2, int y2, bool skip_specified, uint32_t skip_index);
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_BITMAPTOOLS__INIT__H

7
shared-module/bitmaptools/__init__.c
View File

@ -367,7 +367,7 @@ void common_hal_bitmaptools_arrayblit(displayio_bitmap_t *self, void *data, int
}
}
void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* file, int element_size, int bits_per_pixel, bool reverse_pixels_in_element, bool swap_bytes) {
void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* file, int element_size, int bits_per_pixel, bool reverse_pixels_in_element, bool swap_bytes, bool reverse_rows) {
uint32_t mask = (1 << common_hal_displayio_bitmap_get_bits_per_value(self)) - 1;
if (self->read_only) {
@ -378,10 +378,12 @@ void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* f
size_t rowsize = element_size * elements_per_row;
size_t rowsize_in_u32 = (rowsize + sizeof(uint32_t) - 1) / sizeof(uint32_t);
size_t rowsize_in_u16 = (rowsize + sizeof(uint16_t) - 1) / sizeof(uint16_t);
for(int y=0; y<self->height; y++) {
uint32_t rowdata32[rowsize_in_u32];
uint16_t *rowdata16 = (uint16_t*)rowdata32;
uint8_t *rowdata8 = (uint8_t*)rowdata32;
const int y_draw = reverse_rows ? (self->height) - 1 - y : y;
UINT bytes_read = 0;
if (f_read(&file->fp, rowdata32, rowsize, &bytes_read) != FR_OK || bytes_read != rowsize) {
@ -447,8 +449,7 @@ void common_hal_bitmaptools_readinto(displayio_bitmap_t *self, pyb_file_obj_t* f
value = rowdata32[x];
break;
}
displayio_bitmap_write_pixel(self, x, y, value & mask);
displayio_bitmap_write_pixel(self, x, y_draw, value & mask);
}
}