| #include <emmintrin.h> |
| |
| #include "qcmsint.h" |
| |
| /* pre-shuffled: just load these into XMM reg instead of load-scalar/shufps sequence */ |
| #define FLOATSCALE 65536.0f |
| #define CLAMPMAXVAL ( ((float) (65536 - 1)) / 65536.0f ) |
| static const ALIGN float floatScaleX4[4] = |
| { FLOATSCALE, FLOATSCALE, FLOATSCALE, FLOATSCALE}; |
| static const ALIGN float clampMaxValueX4[4] = |
| { CLAMPMAXVAL, CLAMPMAXVAL, CLAMPMAXVAL, CLAMPMAXVAL}; |
| |
| void qcms_transform_data_rgb_out_lut_sse2(qcms_transform *transform, |
| unsigned char *src, |
| unsigned char *dest, |
| size_t length) |
| { |
| unsigned int i; |
| float (*mat)[4] = transform->matrix; |
| char input_back[32]; |
| /* Ensure we have a buffer that's 16 byte aligned regardless of the original |
| * stack alignment. We can't use __attribute__((aligned(16))) or __declspec(align(32)) |
| * because they don't work on stack variables. gcc 4.4 does do the right thing |
| * on x86 but that's too new for us right now. For more info: gcc bug #16660 */ |
| float const * input = (float*)(((uintptr_t)&input_back[16]) & ~0xf); |
| /* share input and output locations to save having to keep the |
| * locations in separate registers */ |
| uint32_t const * output = (uint32_t*)input; |
| |
| /* deref *transform now to avoid it in loop */ |
| const float *igtbl_r = transform->input_gamma_table_r; |
| const float *igtbl_g = transform->input_gamma_table_g; |
| const float *igtbl_b = transform->input_gamma_table_b; |
| |
| /* deref *transform now to avoid it in loop */ |
| const uint8_t *otdata_r = &transform->output_table_r->data[0]; |
| const uint8_t *otdata_g = &transform->output_table_g->data[0]; |
| const uint8_t *otdata_b = &transform->output_table_b->data[0]; |
| |
| /* input matrix values never change */ |
| const __m128 mat0 = _mm_load_ps(mat[0]); |
| const __m128 mat1 = _mm_load_ps(mat[1]); |
| const __m128 mat2 = _mm_load_ps(mat[2]); |
| |
| /* these values don't change, either */ |
| const __m128 max = _mm_load_ps(clampMaxValueX4); |
| const __m128 min = _mm_setzero_ps(); |
| const __m128 scale = _mm_load_ps(floatScaleX4); |
| |
| /* working variables */ |
| __m128 vec_r, vec_g, vec_b, result; |
| |
| /* CYA */ |
| if (!length) |
| return; |
| |
| /* one pixel is handled outside of the loop */ |
| length--; |
| |
| /* setup for transforming 1st pixel */ |
| vec_r = _mm_load_ss(&igtbl_r[src[0]]); |
| vec_g = _mm_load_ss(&igtbl_g[src[1]]); |
| vec_b = _mm_load_ss(&igtbl_b[src[2]]); |
| src += 3; |
| |
| /* transform all but final pixel */ |
| |
| for (i=0; i<length; i++) |
| { |
| /* 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); |
| |
| /* 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((__m128i*)output, _mm_cvtps_epi32(result)); |
| |
| /* load for next loop while store completes */ |
| vec_r = _mm_load_ss(&igtbl_r[src[0]]); |
| vec_g = _mm_load_ss(&igtbl_g[src[1]]); |
| vec_b = _mm_load_ss(&igtbl_b[src[2]]); |
| src += 3; |
| |
| /* use calc'd indices to output RGB values */ |
| dest[0] = otdata_r[output[0]]; |
| dest[1] = otdata_g[output[1]]; |
| dest[2] = otdata_b[output[2]]; |
| dest += 3; |
| } |
| |
| /* 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); |
| |
| 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((__m128i*)output, _mm_cvtps_epi32(result)); |
| |
| dest[0] = otdata_r[output[0]]; |
| dest[1] = otdata_g[output[1]]; |
| dest[2] = otdata_b[output[2]]; |
| } |
| |
| void qcms_transform_data_rgba_out_lut_sse2(qcms_transform *transform, |
| unsigned char *src, |
| unsigned char *dest, |
| size_t length) |
| { |
| unsigned int i; |
| float (*mat)[4] = transform->matrix; |
| char input_back[32]; |
| /* Ensure we have a buffer that's 16 byte aligned regardless of the original |
| * stack alignment. We can't use __attribute__((aligned(16))) or __declspec(align(32)) |
| * because they don't work on stack variables. gcc 4.4 does do the right thing |
| * on x86 but that's too new for us right now. For more info: gcc bug #16660 */ |
| float const * input = (float*)(((uintptr_t)&input_back[16]) & ~0xf); |
| /* share input and output locations to save having to keep the |
| * locations in separate registers */ |
| uint32_t const * output = (uint32_t*)input; |
| |
| /* deref *transform now to avoid it in loop */ |
| const float *igtbl_r = transform->input_gamma_table_r; |
| const float *igtbl_g = transform->input_gamma_table_g; |
| const float *igtbl_b = transform->input_gamma_table_b; |
| |
| /* deref *transform now to avoid it in loop */ |
| const uint8_t *otdata_r = &transform->output_table_r->data[0]; |
| const uint8_t *otdata_g = &transform->output_table_g->data[0]; |
| const uint8_t *otdata_b = &transform->output_table_b->data[0]; |
| |
| /* input matrix values never change */ |
| const __m128 mat0 = _mm_load_ps(mat[0]); |
| const __m128 mat1 = _mm_load_ps(mat[1]); |
| const __m128 mat2 = _mm_load_ps(mat[2]); |
| |
| /* these values don't change, either */ |
| const __m128 max = _mm_load_ps(clampMaxValueX4); |
| const __m128 min = _mm_setzero_ps(); |
| const __m128 scale = _mm_load_ps(floatScaleX4); |
| |
| /* working variables */ |
| __m128 vec_r, vec_g, vec_b, result; |
| unsigned char alpha; |
| |
| /* CYA */ |
| if (!length) |
| return; |
| |
| /* one pixel is handled outside of the loop */ |
| length--; |
| |
| /* setup for transforming 1st pixel */ |
| vec_r = _mm_load_ss(&igtbl_r[src[0]]); |
| vec_g = _mm_load_ss(&igtbl_g[src[1]]); |
| vec_b = _mm_load_ss(&igtbl_b[src[2]]); |
| alpha = src[3]; |
| src += 4; |
| |
| /* transform all but final pixel */ |
| |
| for (i=0; i<length; i++) |
| { |
| /* 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 */ |
| dest[3] = alpha; |
| alpha = src[3]; |
| |
| /* 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((__m128i*)output, _mm_cvtps_epi32(result)); |
| |
| /* load gamma values for next loop while store completes */ |
| vec_r = _mm_load_ss(&igtbl_r[src[0]]); |
| vec_g = _mm_load_ss(&igtbl_g[src[1]]); |
| vec_b = _mm_load_ss(&igtbl_b[src[2]]); |
| src += 4; |
| |
| /* use calc'd indices to output RGB values */ |
| dest[0] = otdata_r[output[0]]; |
| dest[1] = otdata_g[output[1]]; |
| dest[2] = otdata_b[output[2]]; |
| dest += 4; |
| } |
| |
| /* 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); |
| |
| dest[3] = 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((__m128i*)output, _mm_cvtps_epi32(result)); |
| |
| dest[0] = otdata_r[output[0]]; |
| dest[1] = otdata_g[output[1]]; |
| dest[2] = otdata_b[output[2]]; |
| } |
| |
| |