52e08918ff
Add support for the frame buffer address and stride alignment. If user set the CONFIG_LV_DRAW_BUF_ALIGN to not be 4, the buffers shall be allocated aoocrdingly. If user set the CONFIG_LV_DRAW_BUF_STRIDE_ALIGN to not be 1, the methods of flushing the display shall set the pitch accordingly. Signed-off-by: Kate Wang <yumeng.wang@nxp.com>
37 lines
885 B
C
37 lines
885 B
C
/*
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* Copyright (c) 2019 Jan Van Winkel <jan.van_winkel@dxplore.eu>
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* Copyright 2023 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <lvgl.h>
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#include "lvgl_display.h"
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void lvgl_flush_cb_24bit(lv_display_t *display, const lv_area_t *area, uint8_t *px_map)
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{
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uint16_t w = area->x2 - area->x1 + 1;
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uint16_t h = area->y2 - area->y1 + 1;
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struct lvgl_display_flush flush;
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flush.display = display;
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flush.x = area->x1;
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flush.y = area->y1;
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flush.desc.buf_size = w * 3U * h;
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flush.desc.width = w;
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flush.desc.pitch = ROUND_UP(w * 3U, LV_DRAW_BUF_STRIDE_ALIGN) / 3U;
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flush.desc.height = h;
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flush.buf = (void *)px_map;
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/* LVGL assumes BGR byte ordering, convert to RGB */
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for (size_t i = 0; i < flush.desc.buf_size; i += 3) {
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uint8_t tmp = px_map[i];
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px_map[i] = px_map[i + 2];
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px_map[i + 2] = tmp;
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}
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lvgl_flush_display(&flush);
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}
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