diff options
Diffstat (limited to 'shared-module/displayio/__init__.c')
| -rw-r--r-- | shared-module/displayio/__init__.c | 135 |
1 files changed, 87 insertions, 48 deletions
diff --git a/shared-module/displayio/__init__.c b/shared-module/displayio/__init__.c index b6709e0eb..97060aaeb 100644 --- a/shared-module/displayio/__init__.c +++ b/shared-module/displayio/__init__.c @@ -19,9 +19,10 @@ #include "supervisor/usb.h" primary_display_t displays[CIRCUITPY_DISPLAY_LIMIT]; +uint32_t frame_count = 0; bool refresh_area(displayio_display_obj_t* display, const displayio_area_t* area) { - uint16_t buffer_size = 512; + uint16_t buffer_size = 128; // In uint32_ts displayio_area_t clipped; // Clip the area to the display by overlapping the areas. If there is no overlap then we're done. @@ -30,15 +31,36 @@ bool refresh_area(displayio_display_obj_t* display, const displayio_area_t* area } uint16_t subrectangles = 1; uint16_t rows_per_buffer = displayio_area_height(&clipped); - if (displayio_area_size(area) > buffer_size) { - rows_per_buffer = buffer_size / displayio_area_width(&clipped); + uint8_t pixels_per_word = (sizeof(uint32_t) * 8) / display->colorspace.depth; + uint16_t pixels_per_buffer = displayio_area_size(&clipped); + if (displayio_area_size(&clipped) > buffer_size * pixels_per_word) { + rows_per_buffer = buffer_size * pixels_per_word / displayio_area_width(&clipped); + if (rows_per_buffer == 0) { + rows_per_buffer = 1; + } + // If pixels are packed by column then ensure rows_per_buffer is on a byte boundary. + if (display->colorspace.depth < 8 && !display->colorspace.pixels_in_byte_share_row) { + uint8_t pixels_per_byte = 8 / display->colorspace.depth; + if (rows_per_buffer % pixels_per_byte != 0) { + rows_per_buffer -= rows_per_buffer % pixels_per_byte; + } + } subrectangles = displayio_area_height(&clipped) / rows_per_buffer; if (displayio_area_height(&clipped) % rows_per_buffer != 0) { subrectangles++; } - buffer_size = rows_per_buffer * displayio_area_width(&clipped); + pixels_per_buffer = rows_per_buffer * displayio_area_width(&clipped); + buffer_size = pixels_per_buffer / pixels_per_word; + if (pixels_per_buffer % pixels_per_word) { + buffer_size += 1; + } } - uint32_t buffer[buffer_size / 2]; + + // Allocated and shared as a uint32_t array so the compiler knows the + // alignment everywhere. + uint32_t buffer[buffer_size]; + volatile uint32_t mask_length = (pixels_per_buffer / 32) + 1; + uint32_t mask[mask_length]; uint16_t remaining_rows = displayio_area_height(&clipped); for (uint16_t j = 0; j < subrectangles; j++) { @@ -54,37 +76,30 @@ bool refresh_area(displayio_display_obj_t* display, const displayio_area_t* area remaining_rows -= rows_per_buffer; displayio_display_begin_transaction(display); - displayio_display_set_region_to_update(display, subrectangle.x1, subrectangle.y1, - subrectangle.x2, subrectangle.y2); + displayio_display_set_region_to_update(display, &subrectangle); displayio_display_end_transaction(display); - uint32_t mask[(buffer_size / 32) + 1]; - for (uint16_t k = 0; k < (buffer_size / 32) + 1; k++) { - mask[k] = 0x00000000; + uint16_t subrectangle_size_bytes; + if (display->colorspace.depth >= 8) { + subrectangle_size_bytes = displayio_area_size(&subrectangle) * (display->colorspace.depth / 8); + } else { + subrectangle_size_bytes = displayio_area_size(&subrectangle) / (8 / display->colorspace.depth); } - bool full_coverage = displayio_display_fill_area(display, &subrectangle, mask, buffer); - if (!full_coverage) { - uint32_t index = 0; - uint32_t current_mask = 0; - for (int16_t y = subrectangle.y1; y < subrectangle.y2; y++) { - for (int16_t x = subrectangle.x1; x < subrectangle.x2; x++) { - if (index % 32 == 0) { - current_mask = mask[index / 32]; - } - if ((current_mask & (1 << (index % 32))) == 0) { - ((uint16_t*) buffer)[index] = 0x0000; - } - index++; - } - } + for (uint16_t k = 0; k < mask_length; k++) { + mask[k] = 0x00000000; + } + for (uint16_t k = 0; k < buffer_size; k++) { + buffer[k] = 0x00000000; } + displayio_display_fill_area(display, &subrectangle, mask, buffer); + if (!displayio_display_begin_transaction(display)) { // Can't acquire display bus; skip the rest of the data. Try next display. return false; } - displayio_display_send_pixels(display, (uint8_t*) buffer, displayio_area_size(&subrectangle) * sizeof(uint16_t)); + displayio_display_send_pixels(display, (uint8_t*) buffer, subrectangle_size_bytes); displayio_display_end_transaction(display); // TODO(tannewt): Make refresh displays faster so we don't starve other @@ -96,7 +111,6 @@ bool refresh_area(displayio_display_obj_t* display, const displayio_area_t* area // Check for recursive calls to displayio_refresh_displays. bool refresh_displays_in_progress = false; -uint32_t frame_count = 0; void displayio_refresh_displays(void) { if (mp_hal_is_interrupted()) { @@ -153,6 +167,8 @@ void common_hal_displayio_release_displays(void) { continue; } else if (bus_type == &displayio_fourwire_type) { common_hal_displayio_fourwire_deinit(&displays[i].fourwire_bus); + } else if (bus_type == &displayio_i2cdisplay_type) { + common_hal_displayio_i2cdisplay_deinit(&displays[i].i2cdisplay_bus); } else if (bus_type == &displayio_parallelbus_type) { common_hal_displayio_parallelbus_deinit(&displays[i].parallel_bus); } @@ -169,30 +185,53 @@ void common_hal_displayio_release_displays(void) { void reset_displays(void) { // The SPI buses used by FourWires may be allocated on the heap so we need to move them inline. for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) { - if (displays[i].fourwire_bus.base.type != &displayio_fourwire_type) { - continue; - } - displayio_fourwire_obj_t* fourwire = &displays[i].fourwire_bus; - if (((uint32_t) fourwire->bus) < ((uint32_t) &displays) || - ((uint32_t) fourwire->bus) > ((uint32_t) &displays + CIRCUITPY_DISPLAY_LIMIT)) { - busio_spi_obj_t* original_spi = fourwire->bus; - #if BOARD_SPI - // We don't need to move original_spi if it is the board.SPI object because it is - // statically allocated already. (Doing so would also make it impossible to reference in - // a subsequent VM run.) - if (original_spi == common_hal_board_get_spi()) { - continue; + if (displays[i].fourwire_bus.base.type == &displayio_fourwire_type) { + displayio_fourwire_obj_t* fourwire = &displays[i].fourwire_bus; + if (((uint32_t) fourwire->bus) < ((uint32_t) &displays) || + ((uint32_t) fourwire->bus) > ((uint32_t) &displays + CIRCUITPY_DISPLAY_LIMIT)) { + busio_spi_obj_t* original_spi = fourwire->bus; + #if BOARD_SPI + // We don't need to move original_spi if it is the board.SPI object because it is + // statically allocated already. (Doing so would also make it impossible to reference in + // a subsequent VM run.) + if (original_spi == common_hal_board_get_spi()) { + continue; + } + #endif + memcpy(&fourwire->inline_bus, original_spi, sizeof(busio_spi_obj_t)); + fourwire->bus = &fourwire->inline_bus; + // Check for other displays that use the same spi bus and swap them too. + for (uint8_t j = i + 1; j < CIRCUITPY_DISPLAY_LIMIT; j++) { + if (displays[i].fourwire_bus.base.type == &displayio_fourwire_type && + displays[i].fourwire_bus.bus == original_spi) { + displays[i].fourwire_bus.bus = &fourwire->inline_bus; + } } - #endif - memcpy(&fourwire->inline_bus, original_spi, sizeof(busio_spi_obj_t)); - fourwire->bus = &fourwire->inline_bus; - // Check for other displays that use the same spi bus and swap them too. - for (uint8_t j = i + 1; j < CIRCUITPY_DISPLAY_LIMIT; j++) { - if (displays[i].fourwire_bus.bus == original_spi) { - displays[i].fourwire_bus.bus = &fourwire->inline_bus; + } + } else if (displays[i].i2cdisplay_bus.base.type == &displayio_i2cdisplay_type) { + displayio_i2cdisplay_obj_t* i2c = &displays[i].i2cdisplay_bus; + if (((uint32_t) i2c->bus) < ((uint32_t) &displays) || + ((uint32_t) i2c->bus) > ((uint32_t) &displays + CIRCUITPY_DISPLAY_LIMIT)) { + busio_i2c_obj_t* original_i2c = i2c->bus; + #if BOARD_I2C + // We don't need to move original_i2c if it is the board.SPI object because it is + // statically allocated already. (Doing so would also make it impossible to reference in + // a subsequent VM run.) + if (original_i2c == common_hal_board_get_i2c()) { + continue; + } + #endif + memcpy(&i2c->inline_bus, original_i2c, sizeof(busio_i2c_obj_t)); + i2c->bus = &i2c->inline_bus; + // Check for other displays that use the same i2c bus and swap them too. + for (uint8_t j = i + 1; j < CIRCUITPY_DISPLAY_LIMIT; j++) { + if (displays[i].i2cdisplay_bus.base.type == &displayio_i2cdisplay_type && + displays[i].i2cdisplay_bus.bus == original_i2c) { + displays[i].i2cdisplay_bus.bus = &i2c->inline_bus; + } + } } } - } } for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) { |