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Diffstat (limited to 'gfx/qcms/transform-altivec.c')
| -rw-r--r-- | gfx/qcms/transform-altivec.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/gfx/qcms/transform-altivec.c b/gfx/qcms/transform-altivec.c new file mode 100644 index 000000000..230efbba2 --- /dev/null +++ b/gfx/qcms/transform-altivec.c @@ -0,0 +1,269 @@ +/* vim: set ts=8 sw=8 noexpandtab: */ +// qcms +// Copyright (C) 2009 Mozilla Corporation +// Copyright (C) 1998-2007 Marti Maria +// +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the "Software"), +// to deal in the Software without restriction, including without limitation +// the rights to use, copy, modify, merge, publish, distribute, sublicense, +// and/or sell copies of the Software, and to permit persons to whom the Software +// is furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO +// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +#include <altivec.h> + +#include "qcmsint.h" + +#define FLOATSCALE (float)(PRECACHE_OUTPUT_SIZE) +#define CLAMPMAXVAL (((float) (PRECACHE_OUTPUT_SIZE - 1)) / PRECACHE_OUTPUT_SIZE) +static const ALIGN float floatScaleX4 = FLOATSCALE; +static const ALIGN float clampMaxValueX4 = CLAMPMAXVAL; + +inline vector float load_aligned_float(float *dataPtr) +{ + vector float data = vec_lde(0, dataPtr); + vector unsigned char moveToStart = vec_lvsl(0, dataPtr); + return vec_perm(data, data, moveToStart); +} + +void qcms_transform_data_rgb_out_lut_altivec(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 vector float mat0 = vec_ldl(0, (vector float*)mat[0]); + const vector float mat1 = vec_ldl(0, (vector float*)mat[1]); + const vector float mat2 = vec_ldl(0, (vector float*)mat[2]); + + /* these values don't change, either */ + const vector float max = vec_splat(vec_lde(0, (float*)&clampMaxValueX4), 0); + const vector float min = (vector float)vec_splat_u32(0); + const vector float scale = vec_splat(vec_lde(0, (float*)&floatScaleX4), 0); + + /* working variables */ + vector float 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 = load_aligned_float((float*)&igtbl_r[src[0]]); + vec_g = load_aligned_float((float*)&igtbl_r[src[1]]); + vec_b = load_aligned_float((float*)&igtbl_r[src[2]]); + src += 3; + + /* transform all but final pixel */ + + for (i=0; i<length; i++) + { + /* position values from gamma tables */ + vec_r = vec_splat(vec_r, 0); + vec_g = vec_splat(vec_g, 0); + vec_b = vec_splat(vec_b, 0); + + /* gamma * matrix */ + vec_r = vec_madd(vec_r, mat0, min); + vec_g = vec_madd(vec_g, mat1, min); + vec_b = vec_madd(vec_b, mat2, min); + + /* crunch, crunch, crunch */ + vec_r = vec_add(vec_r, vec_add(vec_g, vec_b)); + vec_r = vec_max(min, vec_r); + vec_r = vec_min(max, vec_r); + result = vec_madd(vec_r, scale, min); + + /* store calc'd output tables indices */ + vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output); + + /* load for next loop while store completes */ + vec_r = load_aligned_float((float*)&igtbl_r[src[0]]); + vec_g = load_aligned_float((float*)&igtbl_r[src[1]]); + vec_b = load_aligned_float((float*)&igtbl_r[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 = vec_splat(vec_r, 0); + vec_g = vec_splat(vec_g, 0); + vec_b = vec_splat(vec_b, 0); + + vec_r = vec_madd(vec_r, mat0, min); + vec_g = vec_madd(vec_g, mat1, min); + vec_b = vec_madd(vec_b, mat2, min); + + vec_r = vec_add(vec_r, vec_add(vec_g, vec_b)); + vec_r = vec_max(min, vec_r); + vec_r = vec_min(max, vec_r); + result = vec_madd(vec_r, scale, min); + + vec_st(vec_ctu(vec_round(result),0),0,(vector unsigned int*)output); + + 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_altivec(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 vector float mat0 = vec_ldl(0, (vector float*)mat[0]); + const vector float mat1 = vec_ldl(0, (vector float*)mat[1]); + const vector float mat2 = vec_ldl(0, (vector float*)mat[2]); + + /* these values don't change, either */ + const vector float max = vec_splat(vec_lde(0, (float*)&clampMaxValueX4), 0); + const vector float min = (vector float)vec_splat_u32(0); + const vector float scale = vec_splat(vec_lde(0, (float*)&floatScaleX4), 0); + + /* working variables */ + vector float 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 = load_aligned_float((float*)&igtbl_r[src[0]]); + vec_g = load_aligned_float((float*)&igtbl_r[src[1]]); + vec_b = load_aligned_float((float*)&igtbl_r[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 = vec_splat(vec_r, 0); + vec_g = vec_splat(vec_g, 0); + vec_b = vec_splat(vec_b, 0); + + /* gamma * matrix */ + vec_r = vec_madd(vec_r, mat0, min); + vec_g = vec_madd(vec_g, mat1, min); + vec_b = vec_madd(vec_b, mat2, min); + + /* store alpha for this pixel; load alpha for next */ + dest[3] = alpha; + alpha = src[3]; + + /* crunch, crunch, crunch */ + vec_r = vec_add(vec_r, vec_add(vec_g, vec_b)); + vec_r = vec_max(min, vec_r); + vec_r = vec_min(max, vec_r); + result = vec_madd(vec_r, scale, min); + + /* store calc'd output tables indices */ + vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output); + + /* load gamma values for next loop while store completes */ + vec_r = load_aligned_float((float*)&igtbl_r[src[0]]); + vec_g = load_aligned_float((float*)&igtbl_r[src[1]]); + vec_b = load_aligned_float((float*)&igtbl_r[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 = vec_splat(vec_r, 0); + vec_g = vec_splat(vec_g, 0); + vec_b = vec_splat(vec_b, 0); + + vec_r = vec_madd(vec_r, mat0, min); + vec_g = vec_madd(vec_g, mat1, min); + vec_b = vec_madd(vec_b, mat2, min); + + dest[3] = alpha; + + vec_r = vec_add(vec_r, vec_add(vec_g, vec_b)); + vec_r = vec_max(min, vec_r); + vec_r = vec_min(max, vec_r); + result = vec_madd(vec_r, scale, min); + + vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output); + + dest[0] = otdata_r[output[0]]; + dest[1] = otdata_g[output[1]]; + dest[2] = otdata_b[output[2]]; +} + |