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- // Note: This file is intended to be shared between esp8266 and esp32 platform
- #include "u8x8.h"
- #include "lauxlib.h"
- #include "u8x8_nodemcu_hal.h"
- #include <stdlib.h>
- static const u8x8_display_info_t u8x8_fbrle_display_info =
- {
- /* chip_enable_level = */ 0,
- /* chip_disable_level = */ 1,
- /* post_chip_enable_wait_ns = */ 0,
- /* pre_chip_disable_wait_ns = */ 0,
- /* reset_pulse_width_ms = */ 0,
- /* post_reset_wait_ms = */ 0,
- /* sda_setup_time_ns = */ 0,
- /* sck_pulse_width_ns = */ 0,
- /* sck_clock_hz = */ 0,
- /* spi_mode = */ 0,
- /* i2c_bus_clock_100kHz = */ 4,
- /* data_setup_time_ns = */ 0,
- /* write_pulse_width_ns = */ 0,
- /* tile_width = */ 16,
- /* tile_hight = */ 8,
- /* default_x_offset = */ 0,
- /* flipmode_x_offset = */ 0,
- /* pixel_width = */ 128,
- /* pixel_height = */ 64
- };
- static int bit_at( uint8_t *buf, int line, int x )
- {
- return buf[x] & (1 << line) ? 1 : 0;
- }
- struct fbrle_item
- {
- uint8_t start_x;
- uint8_t len;
- };
- struct fbrle_line
- {
- uint8_t num_valid;
- struct fbrle_item items[0];
- };
- static uint8_t u8x8_d_fbrle(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
- {
- u8g2_nodemcu_t *ext_u8g2 = (u8g2_nodemcu_t *)u8x8;
- switch(msg)
- {
- case U8X8_MSG_DISPLAY_SETUP_MEMORY:
- // forward to template display driver
- return ext_u8g2->overlay.template_display_cb(u8x8, msg, arg_int, arg_ptr);
- case U8X8_MSG_DISPLAY_INIT:
- //u8x8_d_helper_display_init(u8x8);
- ext_u8g2->overlay.fb_update_ongoing = 0;
- break;
- case U8X8_MSG_DISPLAY_SET_POWER_SAVE:
- case U8X8_MSG_DISPLAY_SET_FLIP_MODE:
- break;
- #ifdef U8X8_WITH_SET_CONTRAST
- case U8X8_MSG_DISPLAY_SET_CONTRAST:
- break;
- #endif
- case U8X8_MSG_DISPLAY_REFRESH:
- ext_u8g2->overlay.fb_update_ongoing = 0;
- break;
- case U8X8_MSG_DISPLAY_DRAW_TILE:
- if (ext_u8g2->overlay.fb_update_ongoing == 0) {
- // tell rfb callback that a new framebuffer starts
- if (ext_u8g2->overlay.rfb_cb_ref != LUA_NOREF) {
- // fire callback with nil argument
- lua_State *L = lua_getstate();
- lua_rawgeti( L, LUA_REGISTRYINDEX, ext_u8g2->overlay.rfb_cb_ref );
- lua_pushnil( L );
- luaL_pcallx( L, 1, 0 );
- }
- // and note ongoing framebuffer update
- ext_u8g2->overlay.fb_update_ongoing = 1;
- }
- {
- // TODO: transport tile_y, needs structural change!
- uint8_t tile_x = ((u8x8_tile_t *)arg_ptr)->x_pos;
- tile_x *= 8;
- tile_x += u8x8->x_offset;
- uint8_t tile_w = ((u8x8_tile_t *)arg_ptr)->cnt * 8;
- size_t fbrle_line_size = sizeof( struct fbrle_line ) + sizeof( struct fbrle_item ) * (tile_w/2);
- int num_lines = 8; /*arg_val / (xwidth/8);*/
- uint8_t *buf = ((u8x8_tile_t *)arg_ptr)->tile_ptr;
- struct fbrle_line *fbrle_line;
- if (!(fbrle_line = (struct fbrle_line *)malloc( fbrle_line_size ))) {
- break;
- }
- for (int line = 0; line < num_lines; line++) {
- int start_run = -1;
- fbrle_line->num_valid = 0;
- for (int x = tile_x; x < tile_x+tile_w; x++) {
- if (bit_at( buf, line, x ) == 0) {
- if (start_run >= 0) {
- // inside run, end it and enter result
- fbrle_line->items[fbrle_line->num_valid].start_x = start_run;
- fbrle_line->items[fbrle_line->num_valid++].len = x - start_run;
- //NODE_ERR( " line: %d x: %d len: %d\n", line, start_run, x - start_run );
- start_run = -1;
- }
- } else {
- if (start_run < 0) {
- // outside run, start it
- start_run = x;
- }
- }
- if (fbrle_line->num_valid >= tile_w/2) break;
- }
- // active run?
- if (start_run >= 0 && fbrle_line->num_valid < tile_w/2) {
- fbrle_line->items[fbrle_line->num_valid].start_x = start_run;
- fbrle_line->items[fbrle_line->num_valid++].len = tile_w - start_run;
- }
- // line done, trigger callback
- if (ext_u8g2->overlay.rfb_cb_ref != LUA_NOREF) {
- lua_State *L = lua_getstate();
- lua_rawgeti( L, LUA_REGISTRYINDEX, ext_u8g2->overlay.rfb_cb_ref );
- lua_pushlstring( L, (const char *)fbrle_line, fbrle_line_size );
- luaL_pcallx( L, 1, 0 );
- }
- }
- free( fbrle_line );
- }
- break;
- default:
- return 0;
- break;
- }
- return 1;
- }
- uint8_t u8x8_d_overlay(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
- {
- uint8_t res = 1;
- u8g2_nodemcu_t *ext_u8g2 = (u8g2_nodemcu_t *)u8x8;
- switch(msg)
- {
- case U8X8_MSG_DISPLAY_SETUP_MEMORY:
- // only call for hardware display
- if (ext_u8g2->overlay.hardware_display_cb)
- return ext_u8g2->overlay.hardware_display_cb(u8x8, msg, arg_int, arg_ptr);
- break;
- default:
- // forward all messages first to hardware display and then to fbrle
- if (ext_u8g2->overlay.hardware_display_cb)
- res = ext_u8g2->overlay.hardware_display_cb(u8x8, msg, arg_int, arg_ptr);
- u8x8_d_fbrle(u8x8, msg, arg_int, arg_ptr);
- break;
- }
- return res;
- }
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