diff options
| -rw-r--r-- | docs/library/framebuf.rst | 12 | ||||
| -rw-r--r-- | examples/natmod/framebuf/framebuf.c | 3 | ||||
| -rw-r--r-- | extmod/modframebuf.c | 57 | ||||
| -rw-r--r-- | tests/extmod/framebuf_blit.py | 68 | ||||
| -rw-r--r-- | tests/extmod/framebuf_blit.py.exp | 45 |
5 files changed, 167 insertions, 18 deletions
diff --git a/docs/library/framebuf.rst b/docs/library/framebuf.rst index f22a3613b..e2a231207 100644 --- a/docs/library/framebuf.rst +++ b/docs/library/framebuf.rst @@ -137,6 +137,18 @@ Other methods is compared to the value from *palette*, not to the value directly from *fbuf*.) + *fbuf* can be another FrameBuffer instance, or a tuple or list of the form:: + + (buffer, width, height, format) + + or:: + + (buffer, width, height, format, stride) + + This matches the signature of the FrameBuffer constructor, and the elements + of the tuple/list are the same as the arguments to the constructor except that + the *buffer* here can be read-only. + The *palette* argument enables blitting between FrameBuffers with differing formats. Typical usage is to render a monochrome or grayscale glyph/icon to a color display. The *palette* is a FrameBuffer instance whose format is diff --git a/examples/natmod/framebuf/framebuf.c b/examples/natmod/framebuf/framebuf.c index 1ba702e33..5fd7c6be3 100644 --- a/examples/natmod/framebuf/framebuf.c +++ b/examples/natmod/framebuf/framebuf.c @@ -4,6 +4,9 @@ #include "py/dynruntime.h" #if !defined(__linux__) +void *memcpy(void *dst, const void *src, size_t n) { + return mp_fun_table.memmove_(dst, src, n); +} void *memset(void *s, int c, size_t n) { return mp_fun_table.memset_(s, c, n); } diff --git a/extmod/modframebuf.c b/extmod/modframebuf.c index b718a66cc..5c4b9abf0 100644 --- a/extmod/modframebuf.c +++ b/extmod/modframebuf.c @@ -270,8 +270,7 @@ static void fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, u formats[fb->format].fill_rect(fb, x, y, xend - x, yend - y, col); } -static mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args_in) { - mp_arg_check_num(n_args, n_kw, 4, 5, false); +static mp_obj_t framebuf_make_new_helper(size_t n_args, const mp_obj_t *args_in, unsigned int buf_flags, mp_obj_framebuf_t *o) { mp_int_t width = mp_obj_get_int(args_in[1]); mp_int_t height = mp_obj_get_int(args_in[2]); @@ -318,13 +317,15 @@ static mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size } mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args_in[0], &bufinfo, MP_BUFFER_WRITE); + mp_get_buffer_raise(args_in[0], &bufinfo, buf_flags); if ((strides_required * stride + (height_required - strides_required) * width_required) * bpp / 8 > bufinfo.len) { mp_raise_ValueError(NULL); } - mp_obj_framebuf_t *o = mp_obj_malloc(mp_obj_framebuf_t, type); + if (o == NULL) { + o = mp_obj_malloc(mp_obj_framebuf_t, (const mp_obj_type_t *)&mp_type_framebuf); + } o->buf_obj = args_in[0]; o->buf = bufinfo.buf; o->width = width; @@ -335,6 +336,11 @@ static mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size return MP_OBJ_FROM_PTR(o); } +static mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args_in) { + mp_arg_check_num(n_args, n_kw, 4, 5, false); + return framebuf_make_new_helper(n_args, args_in, MP_BUFFER_WRITE, NULL); +} + static void framebuf_args(const mp_obj_t *args_in, mp_int_t *args_out, int n) { for (int i = 0; i < n; ++i) { args_out[i] = mp_obj_get_int(args_in[i + 1]); @@ -707,13 +713,27 @@ static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_poly_obj, 5, 6, framebuf_pol #endif // MICROPY_PY_ARRAY +static void get_readonly_framebuffer(mp_obj_t arg, mp_obj_framebuf_t *rofb) { + mp_obj_t fb = mp_obj_cast_to_native_base(arg, MP_OBJ_FROM_PTR(&mp_type_framebuf)); + if (fb != MP_OBJ_NULL) { + *rofb = *(mp_obj_framebuf_t *)MP_OBJ_TO_PTR(fb); + } else { + // A tuple/list of the form: (buffer, width, height, format[, stride]). + size_t len; + mp_obj_t *items; + mp_obj_get_array(arg, &len, &items); + if (len < 4 || len > 5) { + mp_raise_ValueError(NULL); + } + framebuf_make_new_helper(len, items, MP_BUFFER_READ, rofb); + } +} + static mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args_in) { mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); - mp_obj_t source_in = mp_obj_cast_to_native_base(args_in[1], MP_OBJ_FROM_PTR(&mp_type_framebuf)); - if (source_in == MP_OBJ_NULL) { - mp_raise_TypeError(NULL); - } - mp_obj_framebuf_t *source = MP_OBJ_TO_PTR(source_in); + + mp_obj_framebuf_t source; + get_readonly_framebuffer(args_in[1], &source); mp_int_t x = mp_obj_get_int(args_in[2]); mp_int_t y = mp_obj_get_int(args_in[3]); @@ -721,16 +741,17 @@ static mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args_in) { if (n_args > 4) { key = mp_obj_get_int(args_in[4]); } - mp_obj_framebuf_t *palette = NULL; + mp_obj_framebuf_t palette; + palette.buf = NULL; if (n_args > 5 && args_in[5] != mp_const_none) { - palette = MP_OBJ_TO_PTR(mp_obj_cast_to_native_base(args_in[5], MP_OBJ_FROM_PTR(&mp_type_framebuf))); + get_readonly_framebuffer(args_in[5], &palette); } if ( (x >= self->width) || (y >= self->height) || - (-x >= source->width) || - (-y >= source->height) + (-x >= source.width) || + (-y >= source.height) ) { // Out of bounds, no-op. return mp_const_none; @@ -741,15 +762,15 @@ static mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args_in) { int y0 = MAX(0, y); int x1 = MAX(0, -x); int y1 = MAX(0, -y); - int x0end = MIN(self->width, x + source->width); - int y0end = MIN(self->height, y + source->height); + int x0end = MIN(self->width, x + source.width); + int y0end = MIN(self->height, y + source.height); for (; y0 < y0end; ++y0) { int cx1 = x1; for (int cx0 = x0; cx0 < x0end; ++cx0) { - uint32_t col = getpixel(source, cx1, y1); - if (palette) { - col = getpixel(palette, col, 0); + uint32_t col = getpixel(&source, cx1, y1); + if (palette.buf) { + col = getpixel(&palette, col, 0); } if (col != (uint32_t)key) { setpixel(self, cx0, y0, col); diff --git a/tests/extmod/framebuf_blit.py b/tests/extmod/framebuf_blit.py new file mode 100644 index 000000000..b1d98b330 --- /dev/null +++ b/tests/extmod/framebuf_blit.py @@ -0,0 +1,68 @@ +# Test FrameBuffer.blit method. + +try: + import framebuf +except ImportError: + print("SKIP") + raise SystemExit + + +def printbuf(): + print("--8<--") + for y in range(h): + for x in range(w): + print("%02x" % buf[(x + y * w)], end="") + print() + print("-->8--") + + +w = 5 +h = 4 +buf = bytearray(w * h) +fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS8) + +fbuf2 = framebuf.FrameBuffer(bytearray(4), 2, 2, framebuf.GS8) +fbuf2.fill(0xFF) + +# Blit another FrameBuffer, at various locations. +for x, y in ((-1, -1), (0, 0), (1, 1), (4, 3)): + fbuf.fill(0) + fbuf.blit(fbuf2, x, y) + printbuf() + +# Blit a bytes object. +fbuf.fill(0) +image = (b"\x10\x11\x12\x13", 2, 2, framebuf.GS8) +fbuf.blit(image, 1, 1) +printbuf() + +# Blit a bytes object that has a stride. +fbuf.fill(0) +image = (b"\x20\x21\xff\x22\x23\xff", 2, 2, framebuf.GS8, 3) +fbuf.blit(image, 1, 1) +printbuf() + +# Blit a bytes object with a bytes palette. +fbuf.fill(0) +image = (b"\x00\x01\x01\x00", 2, 2, framebuf.GS8) +palette = (b"\xa1\xa2", 2, 1, framebuf.GS8) +fbuf.blit(image, 1, 1, -1, palette) +printbuf() + +# Not enough elements in the tuple. +try: + fbuf.blit((0, 0, 0), 0, 0) +except ValueError: + print("ValueError") + +# Too many elements in the tuple. +try: + fbuf.blit((0, 0, 0, 0, 0, 0), 0, 0) +except ValueError: + print("ValueError") + +# Bytes too small. +try: + fbuf.blit((b"", 1, 1, framebuf.GS8), 0, 0) +except ValueError: + print("ValueError") diff --git a/tests/extmod/framebuf_blit.py.exp b/tests/extmod/framebuf_blit.py.exp new file mode 100644 index 000000000..e340f1990 --- /dev/null +++ b/tests/extmod/framebuf_blit.py.exp @@ -0,0 +1,45 @@ +--8<-- +ff00000000 +0000000000 +0000000000 +0000000000 +-->8-- +--8<-- +ffff000000 +ffff000000 +0000000000 +0000000000 +-->8-- +--8<-- +0000000000 +00ffff0000 +00ffff0000 +0000000000 +-->8-- +--8<-- +0000000000 +0000000000 +0000000000 +00000000ff +-->8-- +--8<-- +0000000000 +0010110000 +0012130000 +0000000000 +-->8-- +--8<-- +0000000000 +0020210000 +0022230000 +0000000000 +-->8-- +--8<-- +0000000000 +00a1a20000 +00a2a10000 +0000000000 +-->8-- +ValueError +ValueError +ValueError |