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use crate::transform::{qcms_transform, Format, BGRA, CLAMPMAXVAL, FLOATSCALE, RGB, RGBA};
#[cfg(target_arch = "x86")]
pub use std::arch::x86::{
__m128, __m128i, _mm_add_ps, _mm_cvtps_epi32, _mm_load_ps, _mm_load_ss, _mm_max_ps, _mm_min_ps,
_mm_mul_ps, _mm_set1_ps, _mm_setzero_ps, _mm_shuffle_ps, _mm_store_si128,
};
#[cfg(target_arch = "x86_64")]
pub use std::arch::x86_64::{
__m128, __m128i, _mm_add_ps, _mm_cvtps_epi32, _mm_load_ps, _mm_load_ss, _mm_max_ps, _mm_min_ps,
_mm_mul_ps, _mm_set1_ps, _mm_setzero_ps, _mm_shuffle_ps, _mm_store_si128,
};
#[repr(align(16))]
struct Output([u32; 4]);
unsafe extern "C" fn qcms_transform_data_template_lut_sse2<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();
let mut input: Output = std::mem::zeroed();
/* share input and output locations to save having to keep the
* locations in separate registers */
let output: *const u32 = &mut input as *mut Output as *mut u32;
/* 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: __m128 = _mm_load_ps((*mat.offset(0isize)).as_ptr());
let mat1: __m128 = _mm_load_ps((*mat.offset(1isize)).as_ptr());
let mat2: __m128 = _mm_load_ps((*mat.offset(2isize)).as_ptr());
/* these values don't change, either */
let max: __m128 = _mm_set1_ps(CLAMPMAXVAL);
let min: __m128 = _mm_setzero_ps();
let scale: __m128 = _mm_set1_ps(FLOATSCALE);
let components: u32 = if F::kAIndex == 0xff { 3 } else { 4 } as u32;
/* working variables */
let mut vec_r: __m128;
let mut vec_g: __m128;
let mut vec_b: __m128;
let mut result: __m128;
let mut alpha: u8 = 0;
/* CYA */
if length == 0 {
return;
}
/* one pixel is handled outside of the loop */
length -= 1;
/* setup for transforming 1st pixel */
vec_r = _mm_load_ss(&*igtbl_r.offset(*src.add(F::kRIndex) as isize));
vec_g = _mm_load_ss(&*igtbl_g.offset(*src.add(F::kGIndex) as isize));
vec_b = _mm_load_ss(&*igtbl_b.offset(*src.add(F::kBIndex) as isize));
if F::kAIndex != 0xff {
alpha = *src.add(F::kAIndex)
}
src = src.offset(components as isize);
let mut i: u32 = 0;
while (i as usize) < length {
/* position values from gamma tables */
vec_r = _mm_shuffle_ps(vec_r, vec_r, 0);
vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
/* gamma * matrix */
vec_r = _mm_mul_ps(vec_r, mat0);
vec_g = _mm_mul_ps(vec_g, mat1);
vec_b = _mm_mul_ps(vec_b, mat2);
/* store alpha for this pixel; load alpha for next */
if F::kAIndex != 0xff {
*dest.add(F::kAIndex) = alpha;
alpha = *src.add(F::kAIndex)
}
/* crunch, crunch, crunch */
vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
vec_r = _mm_max_ps(min, vec_r);
vec_r = _mm_min_ps(max, vec_r);
result = _mm_mul_ps(vec_r, scale);
/* store calc'd output tables indices */
_mm_store_si128(output as *mut __m128i, _mm_cvtps_epi32(result));
/* load gamma values for next loop while store completes */
vec_r = _mm_load_ss(&*igtbl_r.offset(*src.add(F::kRIndex) as isize));
vec_g = _mm_load_ss(&*igtbl_g.offset(*src.add(F::kGIndex) as isize));
vec_b = _mm_load_ss(&*igtbl_b.offset(*src.add(F::kBIndex) as isize));
src = src.offset(components as isize);
/* use calc'd indices to output RGB values */
*dest.add(F::kRIndex) = *otdata_r.offset(*output.offset(0isize) as isize);
*dest.add(F::kGIndex) = *otdata_g.offset(*output.offset(1isize) as isize);
*dest.add(F::kBIndex) = *otdata_b.offset(*output.offset(2isize) as isize);
dest = dest.offset(components as isize);
i += 1
}
/* handle final (maybe only) pixel */
vec_r = _mm_shuffle_ps(vec_r, vec_r, 0);
vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
vec_r = _mm_mul_ps(vec_r, mat0);
vec_g = _mm_mul_ps(vec_g, mat1);
vec_b = _mm_mul_ps(vec_b, mat2);
if F::kAIndex != 0xff {
*dest.add(F::kAIndex) = alpha
}
vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
vec_r = _mm_max_ps(min, vec_r);
vec_r = _mm_min_ps(max, vec_r);
result = _mm_mul_ps(vec_r, scale);
_mm_store_si128(output as *mut __m128i, _mm_cvtps_epi32(result));
*dest.add(F::kRIndex) = *otdata_r.offset(*output.offset(0isize) as isize);
*dest.add(F::kGIndex) = *otdata_g.offset(*output.offset(1isize) as isize);
*dest.add(F::kBIndex) = *otdata_b.offset(*output.offset(2isize) as isize);
}
#[no_mangle]
pub unsafe fn qcms_transform_data_rgb_out_lut_sse2(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_sse2::<RGB>(transform, src, dest, length);
}
#[no_mangle]
pub unsafe fn qcms_transform_data_rgba_out_lut_sse2(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_sse2::<RGBA>(transform, src, dest, length);
}
#[no_mangle]
pub unsafe fn qcms_transform_data_bgra_out_lut_sse2(
transform: &qcms_transform,
src: *const u8,
dest: *mut u8,
length: usize,
) {
qcms_transform_data_template_lut_sse2::<BGRA>(transform, src, dest, length);
}