diff options
Diffstat (limited to 'drivers/painter/generic/qp_surface_mono1bpp.c')
| -rw-r--r-- | drivers/painter/generic/qp_surface_mono1bpp.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/painter/generic/qp_surface_mono1bpp.c b/drivers/painter/generic/qp_surface_mono1bpp.c new file mode 100644 index 0000000000..c66b56519d --- /dev/null +++ b/drivers/painter/generic/qp_surface_mono1bpp.c @@ -0,0 +1,113 @@ +// Copyright 2022 Nick Brassel (@tzarc) +// SPDX-License-Identifier: GPL-2.0-or-later + +#ifdef QUANTUM_PAINTER_SURFACE_ENABLE + +# include "color.h" +# include "qp_draw.h" +# include "qp_surface_internal.h" +# include "qp_comms_dummy.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// Surface driver impl: mono1bpp + +static inline void setpixel_mono1bpp(surface_painter_device_t *surface, uint16_t x, uint16_t y, bool mono_pixel) { + uint16_t w = surface->base.panel_width; + uint16_t h = surface->base.panel_height; + + // Drop out if it's off-screen + if (x >= w || y >= h) { + return; + } + + // Figure out which location needs to be updated + uint32_t pixel_num = y * w + x; + uint32_t byte_offset = pixel_num / 8; + uint8_t bit_offset = pixel_num % 8; + bool curr_val = (surface->u8buffer[byte_offset] & (1 << bit_offset)) ? true : false; + + // Skip messing with the dirty info if the original value already matches + if (curr_val != mono_pixel) { + // Update the dirty region + qp_surface_update_dirty(&surface->dirty, x, y); + + // Update the pixel data in the buffer + if (mono_pixel) { + surface->u8buffer[byte_offset] |= (1 << bit_offset); + } else { + surface->u8buffer[byte_offset] &= ~(1 << bit_offset); + } + } +} + +static inline void append_pixel_mono1bpp(surface_painter_device_t *surface, bool mono_pixel) { + setpixel_mono1bpp(surface, surface->viewport.pixdata_x, surface->viewport.pixdata_y, mono_pixel); + qp_surface_increment_pixdata_location(&surface->viewport); +} + +static inline void stream_pixdata_mono1bpp(surface_painter_device_t *surface, const uint8_t *data, uint32_t native_pixel_count) { + for (uint32_t pixel_counter = 0; pixel_counter < native_pixel_count; ++pixel_counter) { + uint32_t byte_offset = pixel_counter / 8; + uint8_t bit_offset = pixel_counter % 8; + append_pixel_mono1bpp(surface, (data[byte_offset] & (1 << bit_offset)) ? true : false); + } +} + +// Stream pixel data to the current write position in GRAM +static bool qp_surface_pixdata_mono1bpp(painter_device_t device, const void *pixel_data, uint32_t native_pixel_count) { + painter_driver_t * driver = (painter_driver_t *)device; + surface_painter_device_t *surface = (surface_painter_device_t *)driver; + stream_pixdata_mono1bpp(surface, (const uint8_t *)pixel_data, native_pixel_count); + return true; +} + +// Pixel colour conversion +static bool qp_surface_palette_convert_mono1bpp(painter_device_t device, int16_t palette_size, qp_pixel_t *palette) { + for (int16_t i = 0; i < palette_size; ++i) { + palette[i].mono = (palette[i].hsv888.v > 127) ? 1 : 0; + } + return true; +} + +// Append pixels to the target location, keyed by the pixel index +static bool qp_surface_append_pixels_mono1bpp(painter_device_t device, uint8_t *target_buffer, qp_pixel_t *palette, uint32_t pixel_offset, uint32_t pixel_count, uint8_t *palette_indices) { + for (uint32_t i = 0; i < pixel_count; ++i) { + uint32_t pixel_num = pixel_offset + i; + uint32_t byte_offset = pixel_num / 8; + uint8_t bit_offset = pixel_num % 8; + if (palette[palette_indices[i]].mono) { + target_buffer[byte_offset] |= (1 << bit_offset); + } else { + target_buffer[byte_offset] &= ~(1 << bit_offset); + } + } + return true; +} + +static bool mono1bpp_target_pixdata_transfer(painter_driver_t *surface_driver, painter_driver_t *target_driver, uint16_t x, uint16_t y, bool entire_surface) { + return false; // Not yet supported. +} + +static bool qp_surface_append_pixdata_mono1bpp(painter_device_t device, uint8_t *target_buffer, uint32_t pixdata_offset, uint8_t pixdata_byte) { + return false; // Just use 1bpp images. +} + +const surface_painter_driver_vtable_t mono1bpp_surface_driver_vtable = { + .base = + { + .init = qp_surface_init, + .power = qp_surface_power, + .clear = qp_surface_clear, + .flush = qp_surface_flush, + .pixdata = qp_surface_pixdata_mono1bpp, + .viewport = qp_surface_viewport, + .palette_convert = qp_surface_palette_convert_mono1bpp, + .append_pixels = qp_surface_append_pixels_mono1bpp, + .append_pixdata = qp_surface_append_pixdata_mono1bpp, + }, + .target_pixdata_transfer = mono1bpp_target_pixdata_transfer, +}; + +SURFACE_FACTORY_FUNCTION_IMPL(qp_make_mono1bpp_surface, mono1bpp_surface_driver_vtable, 1); + +#endif // QUANTUM_PAINTER_SURFACE_ENABLE |