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SourceVuESP-IDF Framework and Examplesi80_controller sample_calculate_draw_buf_size()

_calculate_draw_buf_size() function

For given width, height, color format, and stride, calculate the size needed for a new draw buffer.

Syntax

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Summary

Declaration

Definition

from lv_draw_buf.c:37

static uint32_t _calculate_draw_buf_size(uint32_t w, uint32_t h, lv_color_format_t cf, uint32_t stride);

Implemented in lv_draw_buf.c:647

Arguments

Argument

stride

References

Code

Location

Referrer

static uint32_t _calculate_draw_buf_size(uint32_t w, uint32_t h, lv_color_format_t cf, uint32_t stride)

lv_draw_buf.c:647

static uint32_t _calculate_draw_buf_size(uint32_t w, uint32_t h, lv_color_format_t cf, uint32_t stride);

lv_draw_buf.c:37

uint32_t size = _calculate_draw_buf_size(w, h, cf, stride);

lv_draw_buf.c:291

lv_draw_buf_create_ex()

uint32_t size = _calculate_draw_buf_size(w, h, cf, stride);

lv_draw_buf.c:346

lv_draw_buf_reshape()

uint32_t new_size = _calculate_draw_buf_size(w, h, header->cf, stride);

lv_draw_buf.c:424

lv_draw_buf_adjust_stride()

Call Tree

_calculate_draw_buf_size() is called by 3 functions and calls 1 function:

lv_draw_buf_create_ex()

lv_draw_buf_reshape()

lv_draw_buf_adjust_stride()

_calculate_draw_buf_size()

lv_draw_buf_width_to_stride()

Data Use

_calculate_draw_buf_size() reads 5 variables:

lv_color_format_t::LV_COLOR_FORMAT_I1

lv_color_format_t::LV_COLOR_FORMAT_I2

lv_color_format_t::LV_COLOR_FORMAT_I4

lv_color_format_t::LV_COLOR_FORMAT_I8

lv_color_format_t::LV_COLOR_FORMAT_RGB565A8

_calculate_draw_buf_size()

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