lobo/ssd1306_oled_display_cli
1
0
Fork 0
Code Issues 3 Pull Requests Actions Packages Projects Releases Wiki Activity

new -flip arg to rotate 180 degrees

Browse Source 
Fixes #4
This commit is contained in:
Emil Lerch 2023-04-08 17:31:10 -07:00
parent 4a55140672
commit 6d41563226
Signed by: lobo
GPG Key ID: A7B62D657EF764F8
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/main.zig
View File

@ -38,6 +38,7 @@ fn usage(args: [][]u8) !void {
const Options = struct { const Options = struct {
background_filename: [:0]u8, background_filename: [:0]u8,
device_file: [:0]u8, device_file: [:0]u8,
flip: bool,
}; };
pub fn main() !void { pub fn main() !void {
defer deinit(); defer deinit();
@ -88,6 +89,10 @@ pub fn main() !void {
var pixels: [display.WIDTH * display.HEIGHT]u8 = undefined; var pixels: [display.WIDTH * display.HEIGHT]u8 = undefined;
try convertImage(opts.background_filename, &pixels, noTextForLine); try convertImage(opts.background_filename, &pixels, noTextForLine);
try addTextToImage(alloc, &pixels, &lines); try addTextToImage(alloc, &pixels, &lines);
if (opts.flip) {
try stdout.print("Flipping\n", .{});
flipImage(&pixels);
}
try bw.flush(); try bw.flush();
// We should take the linux device file here, then inspect for ttyUSB vs // We should take the linux device file here, then inspect for ttyUSB vs
@ -126,6 +131,10 @@ fn processArgs(args: [][:0]u8, line_array: *[display.LINES]*const [:0]u8) !Optio
var is_filename = false; var is_filename = false;
var line_number: ?usize = null; var line_number: ?usize = null;
for (args[1..], 1..) |arg, i| { for (args[1..], 1..) |arg, i| {
if (std.mem.eql(u8, "-flip", arg)) {
opts.flip = true;
continue;
}
if (std.mem.eql(u8, "-bg", arg)) { if (std.mem.eql(u8, "-bg", arg)) {
is_filename = true; is_filename = true;
continue; continue;
@ -162,6 +171,15 @@ fn areDigits(bytes: []u8) bool {
} }
return true; return true;
} }
fn flipImage(pixels: *[display.WIDTH * display.HEIGHT]u8) void {
for (pixels[0..(display.WIDTH * display.HEIGHT / 2)], 0..) |_, i| {
const dest_pixel = pixels[pixels.len - 1 - i];
const src_pixel = pixels[i];
pixels[pixels.len - 1 - i] = src_pixel;
pixels[i] = dest_pixel;
}
}
fn addTextToImage(allocator: std.mem.Allocator, pixels: *[display.WIDTH * display.HEIGHT]u8, data: []*[]u8) !void { fn addTextToImage(allocator: std.mem.Allocator, pixels: *[display.WIDTH * display.HEIGHT]u8, data: []*[]u8) !void {
var maybe_font_data = try getFontData(allocator, DEFAULT_FONT); var maybe_font_data = try getFontData(allocator, DEFAULT_FONT);