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use crate::transform::{qcms_transform, Format, BGRA, CLAMPMAXVAL, FLOATSCALE, RGB, RGBA};
#[cfg(target_arch = "aarch64")]
use core::arch::aarch64::{
float32x4_t, int32x4_t, vaddq_f32, vcvtq_s32_f32, vgetq_lane_s32, vld1q_dup_f32, vld1q_f32,
vmaxq_f32, vminq_f32, vmulq_f32,
};
#[cfg(target_arch = "arm")]
use core::arch::arm::{
float32x4_t, int32x4_t, vaddq_f32, vcvtq_s32_f32, vgetq_lane_s32, vld1q_dup_f32, vld1q_f32,
vmaxq_f32, vminq_f32, vmulq_f32,
};
use std::mem::zeroed;
#[target_feature(enable = "neon")]
#[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]
unsafe fn qcms_transform_data_template_lut_neon<F: Format>(
transform: &qcms_transform,
mut src: *const u8,
mut dest: *mut u8,
mut length: usize,
) {
let mat: *const [f32; 4] = (*transform).matrix.as_ptr();
/* deref *transform now to avoid it in loop */
let igtbl_r: *const f32 = (*transform).input_gamma_table_r.as_ref().unwrap().as_ptr();
let igtbl_g: *const f32 = (*transform).input_gamma_table_g.as_ref().unwrap().as_ptr();
let igtbl_b: *const f32 = (*transform).input_gamma_table_b.as_ref().unwrap().as_ptr();
/* deref *transform now to avoid it in loop */
let otdata_r: *const u8 = transform
.precache_output
.as_deref()
.unwrap()
.lut_r
.as_ptr();
let otdata_g: *const u8 = (*transform)
.precache_output
.as_deref()
.unwrap()
.lut_g
.as_ptr();
let otdata_b: *const u8 = (*transform)
.precache_output
.as_deref()
.unwrap()
.lut_b
.as_ptr();
/* input matrix values never change */
let mat0: float32x4_t = vld1q_f32((*mat.offset(0isize)).as_ptr());
let mat1: float32x4_t = vld1q_f32((*mat.offset(1isize)).as_ptr());
let mat2: float32x4_t = vld1q_f32((*mat.offset(2isize)).as_ptr());
/* these values don't change, either */
let max: float32x4_t = vld1q_dup_f32(&CLAMPMAXVAL);
let min: float32x4_t = zeroed();
let scale: float32x4_t = vld1q_dup_f32(&FLOATSCALE);
let components: u32 = if F::kAIndex == 0xff { 3 } else { 4 } as u32;
/* working variables */
let mut vec_r: float32x4_t;
let mut vec_g: float32x4_t;
let mut vec_b: float32x4_t;
let mut result: int32x4_t;
let mut alpha: u8 = 0;
/* CYA */
if length == 0 {
return;
}
/* one pixel is handled outside of the loop */
length = length.wrapping_sub(1);
/* setup for transforming 1st pixel */
vec_r = vld1q_dup_f32(&*igtbl_r.offset(*src.offset(F::kRIndex as isize) as isize));
vec_g = vld1q_dup_f32(&*igtbl_g.offset(*src.offset(F::kGIndex as isize) as isize));
vec_b = vld1q_dup_f32(&*igtbl_b.offset(*src.offset(F::kBIndex as isize) as isize));
if F::kAIndex != 0xff {
alpha = *src.offset(F::kAIndex as isize)
}
src = src.offset(components as isize);
let mut i: u32 = 0;
while (i as usize) < length {
/* gamma * matrix */
vec_r = vmulq_f32(vec_r, mat0);
vec_g = vmulq_f32(vec_g, mat1);
vec_b = vmulq_f32(vec_b, mat2);
/* store alpha for this pixel; load alpha for next */
if F::kAIndex != 0xff {
*dest.offset(F::kAIndex as isize) = alpha;
alpha = *src.offset(F::kAIndex as isize)
}
/* crunch, crunch, crunch */
vec_r = vaddq_f32(vec_r, vaddq_f32(vec_g, vec_b));
vec_r = vmaxq_f32(min, vec_r);
vec_r = vminq_f32(max, vec_r);
result = vcvtq_s32_f32(vmulq_f32(vec_r, scale));
/* use calc'd indices to output RGB values */
*dest.offset(F::kRIndex as isize) = *otdata_r.offset(vgetq_lane_s32(result, 0) as isize);
*dest.offset(F::kGIndex as isize) = *otdata_g.offset(vgetq_lane_s32(result, 1) as isize);
*dest.offset(F::kBIndex as isize) = *otdata_b.offset(vgetq_lane_s32(result, 2) as isize);
/* load gamma values for next loop while store completes */
vec_r = vld1q_dup_f32(&*igtbl_r.offset(*src.offset(F::kRIndex as isize) as isize));
vec_g = vld1q_dup_f32(&*igtbl_g.offset(*src.offset(F::kGIndex as isize) as isize));
vec_b = vld1q_dup_f32(&*igtbl_b.offset(*src.offset(F::kBIndex as isize) as isize));
dest = dest.offset(components as isize);
src = src.offset(components as isize);
i = i.wrapping_add(1)
}
/* handle final (maybe only) pixel */
vec_r = vmulq_f32(vec_r, mat0);
vec_g = vmulq_f32(vec_g, mat1);
vec_b = vmulq_f32(vec_b, mat2);
if F::kAIndex != 0xff {
*dest.offset(F::kAIndex as isize) = alpha
}
vec_r = vaddq_f32(vec_r, vaddq_f32(vec_g, vec_b));
vec_r = vmaxq_f32(min, vec_r);
vec_r = vminq_f32(max, vec_r);
result = vcvtq_s32_f32(vmulq_f32(vec_r, scale));
*dest.offset(F::kRIndex as isize) = *otdata_r.offset(vgetq_lane_s32(result, 0) as isize);
*dest.offset(F::kGIndex as isize) = *otdata_g.offset(vgetq_lane_s32(result, 1) as isize);
*dest.offset(F::kBIndex as isize) = *otdata_b.offset(vgetq_lane_s32(result, 2) as isize);
}
#[no_mangle]
#[target_feature(enable = "neon")]
#[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]
pub unsafe fn qcms_transform_data_rgb_out_lut_neon(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_neon::<RGB>(transform, src, dest, length);
}
#[no_mangle]
#[target_feature(enable = "neon")]
#[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]
pub unsafe fn qcms_transform_data_rgba_out_lut_neon(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_neon::<RGBA>(transform, src, dest, length);
}
#[no_mangle]
#[target_feature(enable = "neon")]
#[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]
pub unsafe fn qcms_transform_data_bgra_out_lut_neon(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_neon::<BGRA>(transform, src, dest, length);
}
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