diff options
author | Damien George <damien.p.george@gmail.com> | 2017-12-14 17:36:13 +1100 |
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committer | Damien George <damien.p.george@gmail.com> | 2017-12-14 17:36:13 +1100 |
commit | 46b35356e1727365dd5a33fcf3a722fda82c8b08 (patch) | |
tree | 1e279da65a7775aebc36c93a9cef8e65970b2af0 /extmod/modframebuf.c | |
parent | 34247465c34113bb26f6c9582ea31f31b0ea0d1b (diff) |
extmod/modframebuf: Add 8-bit greyscale format (GS8).
Diffstat (limited to 'extmod/modframebuf.c')
-rw-r--r-- | extmod/modframebuf.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/extmod/modframebuf.c b/extmod/modframebuf.c index f2dc4e858..a7f6ba905 100644 --- a/extmod/modframebuf.c +++ b/extmod/modframebuf.c @@ -56,6 +56,7 @@ typedef struct _mp_framebuf_p_t { #define FRAMEBUF_RGB565 (1) #define FRAMEBUF_GS2_HMSB (5) #define FRAMEBUF_GS4_HMSB (2) +#define FRAMEBUF_GS8 (6) #define FRAMEBUF_MHLSB (3) #define FRAMEBUF_MHMSB (4) @@ -206,11 +207,31 @@ STATIC void gs4_hmsb_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, } } +// Functions for GS8 format + +STATIC void gs8_setpixel(const mp_obj_framebuf_t *fb, int x, int y, uint32_t col) { + uint8_t *pixel = &((uint8_t*)fb->buf)[(x + y * fb->stride)]; + *pixel = col & 0xff; +} + +STATIC uint32_t gs8_getpixel(const mp_obj_framebuf_t *fb, int x, int y) { + return ((uint8_t*)fb->buf)[(x + y * fb->stride)]; +} + +STATIC void gs8_fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, uint32_t col) { + uint8_t *pixel = &((uint8_t*)fb->buf)[(x + y * fb->stride)]; + while (h--) { + memset(pixel, col, w); + pixel += fb->stride; + } +} + STATIC mp_framebuf_p_t formats[] = { [FRAMEBUF_MVLSB] = {mvlsb_setpixel, mvlsb_getpixel, mvlsb_fill_rect}, [FRAMEBUF_RGB565] = {rgb565_setpixel, rgb565_getpixel, rgb565_fill_rect}, [FRAMEBUF_GS2_HMSB] = {gs2_hmsb_setpixel, gs2_hmsb_getpixel, gs2_hmsb_fill_rect}, [FRAMEBUF_GS4_HMSB] = {gs4_hmsb_setpixel, gs4_hmsb_getpixel, gs4_hmsb_fill_rect}, + [FRAMEBUF_GS8] = {gs8_setpixel, gs8_getpixel, gs8_fill_rect}, [FRAMEBUF_MHLSB] = {mono_horiz_setpixel, mono_horiz_getpixel, mono_horiz_fill_rect}, [FRAMEBUF_MHMSB] = {mono_horiz_setpixel, mono_horiz_getpixel, mono_horiz_fill_rect}, }; @@ -272,6 +293,8 @@ STATIC mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size case FRAMEBUF_GS4_HMSB: o->stride = (o->stride + 1) & ~1; break; + case FRAMEBUF_GS8: + break; default: mp_raise_ValueError("invalid format"); } @@ -610,6 +633,7 @@ STATIC const mp_rom_map_elem_t framebuf_module_globals_table[] = { { MP_ROM_QSTR(MP_QSTR_RGB565), MP_ROM_INT(FRAMEBUF_RGB565) }, { MP_ROM_QSTR(MP_QSTR_GS2_HMSB), MP_ROM_INT(FRAMEBUF_GS2_HMSB) }, { MP_ROM_QSTR(MP_QSTR_GS4_HMSB), MP_ROM_INT(FRAMEBUF_GS4_HMSB) }, + { MP_ROM_QSTR(MP_QSTR_GS8), MP_ROM_INT(FRAMEBUF_GS8) }, { MP_ROM_QSTR(MP_QSTR_MONO_HLSB), MP_ROM_INT(FRAMEBUF_MHLSB) }, { MP_ROM_QSTR(MP_QSTR_MONO_HMSB), MP_ROM_INT(FRAMEBUF_MHMSB) }, }; |