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// 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
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