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stbi: allow customisation of number of channels in stbi.load (#18491)

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Casper Kuethe 2023-06-22 15:47:52 +02:00 committed by GitHub
parent 22bd1b9d55
commit a12e82aa15
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1 changed files with 9 additions and 2 deletions
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11
vlib/stbi/stbi.c.v
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@ -110,8 +110,15 @@ fn C.stbi_load(filename &char, x &int, y &int, channels_in_file &int, desired_ch
fn C.stbi_load_from_file(f voidptr, x &int, y &int, channels_in_file &int, desired_channels int) &u8 fn C.stbi_load_from_file(f voidptr, x &int, y &int, channels_in_file &int, desired_channels int) &u8
fn C.stbi_load_from_memory(buffer &u8, len int, x &int, y &int, channels_in_file &int, desired_channels int) &u8 fn C.stbi_load_from_memory(buffer &u8, len int, x &int, y &int, channels_in_file &int, desired_channels int) &u8
[params]
pub struct LoadParams {
// the number of channels you expect the image to have.
// If set to 0 stbi will figure out the correct number of channels
desired_channels int = C.STBI_rgb_alpha
}
// load load an image from a path // load load an image from a path
pub fn load(path string) !Image { pub fn load(path string, params LoadParams) !Image {
ext := path.all_after_last('.') ext := path.all_after_last('.')
mut res := Image{ mut res := Image{
ok: true ok: true
@ -119,7 +126,7 @@ pub fn load(path string) !Image {
data: 0 data: 0
} }
res.data = C.stbi_load(&char(path.str), &res.width, &res.height, &res.nr_channels, res.data = C.stbi_load(&char(path.str), &res.width, &res.height, &res.nr_channels,
C.STBI_rgb_alpha) params.desired_channels)
if isnil(res.data) { if isnil(res.data) {
return error('stbi_image failed to load from "${path}"') return error('stbi_image failed to load from "${path}"')