Struct libjxl_sys::JxlCmsInterface

#[repr(C)]
pub struct JxlCmsInterface {
    pub init_data: *mut c_void,
    pub init: jpegxl_cms_init_func,
    pub get_src_buf: jpegxl_cms_get_buffer_func,
    pub get_dst_buf: jpegxl_cms_get_buffer_func,
    pub run: jpegxl_cms_run_func,
    pub destroy: jpegxl_cms_destroy_func,
}

Interface for performing colorspace transforms. The @c init function can be called several times to instantiate several transforms, including before other transforms have been destroyed.

The call sequence for a given colorspace transform could look like the following: @dot digraph calls { newrank = true node [shape = box, fontname = monospace] init [label = “user_data <- init(\l
init_data = data,\l
num_threads = 3,\l
pixels_per_thread = 20,\l
input = (sRGB, 3 channels),\l
output = (Display-P3, 3 channels),\l
intensity_target = 255\l
)\l”] subgraph cluster_0 { color = lightgrey label = “thread 1” labeljust = “c” run_1_1 [label = “run(\l
user_data,\l
thread = 1,\l
input = in[0],\l
output = out[0],\l
num_pixels = 20\l
)\l”] run_1_2 [label = “run(\l
user_data,\l
thread = 1,\l
input = in[3],\l
output = out[3],\l
num_pixels = 20\l
)\l”] } subgraph cluster_1 { color = lightgrey label = “thread 2” labeljust = “l” run_2_1 [label = “run(\l
user_data,\l
thread = 2,\l
input = in[1],\l
output = out[1],\l
num_pixels = 20\l
)\l”] run_2_2 [label = “run(\l
user_data,\l
thread = 2,\l
input = in[4],\l
output = out[4],\l
num_pixels = 13\l
)\l”] } subgraph cluster_3 { color = lightgrey label = “thread 3” labeljust = “c” run_3_1 [label = “run(\l
user_data,\l
thread = 3,\l
input = in[2],\l
output = out[2],\l
num_pixels = 20\l
)\l”] } init -> {run_1_1; run_2_1; run_3_1; rank = same} run_1_1 -> run_1_2 run_2_1 -> run_2_2 {run_1_2; run_2_2, run_3_1} -> “destroy(user_data)” } @enddot

Fields

init_data: *mut c_void

CMS-specific data that will be passed to @ref init.

init: jpegxl_cms_init_func

Prepares a colorspace transform as described in the documentation of @ref jpegxl_cms_init_func.

get_src_buf: jpegxl_cms_get_buffer_func

Returns a buffer that can be used as input to @c run.

get_dst_buf: jpegxl_cms_get_buffer_func

Returns a buffer that can be used as output from @c run.

run: jpegxl_cms_run_func

Executes the transform on a batch of pixels, per @ref jpegxl_cms_run_func.

destroy: jpegxl_cms_destroy_func

Cleans up the transform.

Trait Implementations

impl Clone for JxlCmsInterface

fn clone(&self) -> JxlCmsInterface

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JxlCmsInterface

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for JxlCmsInterface

fn default() -> Self

Returns the “default value” for a type.

impl Copy for JxlCmsInterface