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// Copyright 2022 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#ifdef QUANTUM_PAINTER_SURFACE_ENABLE
# include "qp_surface.h"
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Internal declarations
// Surface vtable
typedef struct surface_painter_driver_vtable_t {
painter_driver_vtable_t base; // must be first, so it can be cast to/from the painter_driver_vtable_t* type
bool (*target_pixdata_transfer)(painter_driver_t *surface_driver, painter_driver_t *target_driver, uint16_t x, uint16_t y, bool entire_surface);
} surface_painter_driver_vtable_t;
typedef struct surface_dirty_data_t {
bool is_dirty;
uint16_t l;
uint16_t t;
uint16_t r;
uint16_t b;
} surface_dirty_data_t;
typedef struct surface_viewport_data_t {
// Manually manage the viewport for streaming pixel data to the display
uint16_t viewport_l;
uint16_t viewport_t;
uint16_t viewport_r;
uint16_t viewport_b;
// Current write location to the display when streaming pixel data
uint16_t pixdata_x;
uint16_t pixdata_y;
} surface_viewport_data_t;
// Surface struct
typedef struct surface_painter_device_t {
painter_driver_t base; // must be first, so it can be cast to/from the painter_device_t* type
// The target buffer
union {
void * buffer;
uint8_t * u8buffer;
uint16_t *u16buffer;
};
// Manually manage the viewport for streaming pixel data to the display
surface_viewport_data_t viewport;
// Maintain a dirty region so we can stream only what we need
surface_dirty_data_t dirty;
} surface_painter_device_t;
/**
* Factory method for an RGB565 surface (aka framebuffer). Accepts an external device table.
*
* @param device_table[in] the table of devices to use for instantiation
* @param device_table_len[in] the length of the table of devices
* @param panel_width[in] the width of the display panel
* @param panel_height[in] the height of the display panel
* @param buffer[in] pointer to a preallocated uint8_t buffer of size `SURFACE_REQUIRED_BUFFER_BYTE_SIZE(panel_width, panel_height, 16)`
* @return the device handle used with all drawing routines in Quantum Painter
*/
painter_device_t qp_make_rgb565_surface_advanced(surface_painter_device_t *device_table, size_t device_table_len, uint16_t panel_width, uint16_t panel_height, void *buffer);
/**
* Factory method for a 1bpp monochrome surface (aka framebuffer).
*
* @param device_table[in] the table of devices to use for instantiation
* @param device_table_len[in] the length of the table of devices
* @param panel_width[in] the width of the display panel
* @param panel_height[in] the height of the display panel
* @param buffer[in] pointer to a preallocated uint8_t buffer of size `SURFACE_REQUIRED_BUFFER_BYTE_SIZE(panel_width, panel_height, 16)`
* @return the device handle used with all drawing routines in Quantum Painter
*/
painter_device_t qp_make_mono1bpp_surface_advanced(surface_painter_device_t *device_table, size_t device_table_len, uint16_t panel_width, uint16_t panel_height, void *buffer);
// Driver storage
extern surface_painter_device_t surface_drivers[SURFACE_NUM_DEVICES];
// Surface common APIs
bool qp_surface_init(painter_device_t device, painter_rotation_t rotation);
bool qp_surface_power(painter_device_t device, bool power_on);
bool qp_surface_clear(painter_device_t device);
bool qp_surface_flush(painter_device_t device);
bool qp_surface_viewport(painter_device_t device, uint16_t left, uint16_t top, uint16_t right, uint16_t bottom);
void qp_surface_increment_pixdata_location(surface_viewport_data_t *viewport);
void qp_surface_update_dirty(surface_dirty_data_t *dirty, uint16_t x, uint16_t y);
#endif // QUANTUM_PAINTER_SURFACE_ENABLE
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Factory functions for creating a handle to a surface
#define SURFACE_FACTORY_FUNCTION_IMPL(function_name, vtable, bpp) \
painter_device_t(function_name##_advanced)(surface_painter_device_t * device_table, size_t device_table_len, uint16_t panel_width, uint16_t panel_height, void *buffer) { \
for (uint32_t i = 0; i < device_table_len; ++i) { \
surface_painter_device_t *driver = &device_table[i]; \
if (!driver->base.driver_vtable) { \
driver->base.driver_vtable = (painter_driver_vtable_t *)&(vtable); \
driver->base.native_bits_per_pixel = (bpp); \
driver->base.comms_vtable = &dummy_comms_vtable; \
driver->base.panel_width = panel_width; \
driver->base.panel_height = panel_height; \
driver->base.rotation = QP_ROTATION_0; \
driver->base.offset_x = 0; \
driver->base.offset_y = 0; \
driver->buffer = buffer; \
return (painter_device_t)driver; \
} \
} \
return NULL; \
} \
painter_device_t(function_name)(uint16_t panel_width, uint16_t panel_height, void *buffer) { \
return (function_name##_advanced)(surface_drivers, SURFACE_NUM_DEVICES, panel_width, panel_height, buffer); \
}
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