Add exact version of qcms used by Chrome for testing and comparison

third_party/qcms/src/transform-sse2.c

Index: third_party/qcms/src/transform-sse2.c
diff --git a/third_party/qcms/src/transform-sse2.c b/third_party/qcms/src/transform-sse2.c
new file mode 100644
index 0000000000000000000000000000000000000000..c06db69cd3c15d9ce8607e96b096be4376868fcb
--- /dev/null
+++ b/third_party/qcms/src/transform-sse2.c
@@ -0,0 +1,458 @@
+//  qcms
+//  Copyright (C) 2009 Mozilla Foundation
+//  Copyright (C) 2015 Intel Corporation
+//
+// 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 <emmintrin.h>
+
+#include "qcmsint.h"
+
+/* pre-shuffled: just load these into XMM reg instead of load-scalar/shufps sequence */
+#define FLOATSCALE  (float)(PRECACHE_OUTPUT_SIZE - 1)
+#define CLAMPMAXVAL 1.0f
+
+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,
+                                          qcms_format_type output_format)
+{
+    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;
+    const int r_out = output_format.r;
+    const int b_out = output_format.b;
+
+    /* 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_g, _mm_add_ps(vec_r, 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[r_out] = otdata_r[output[0]];
+        dest[1]     = otdata_g[output[1]];
+        dest[b_out] = 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_g, _mm_add_ps(vec_r, 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[r_out] = otdata_r[output[0]];
+    dest[1]     = otdata_g[output[1]];
+    dest[b_out] = otdata_b[output[2]];
+}
+
+void qcms_transform_data_rgba_out_lut_sse2(qcms_transform *transform,
+                                           unsigned char *src,
+                                           unsigned char *dest,
+                                           size_t length,
+                                           qcms_format_type output_format)
+{
+    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;
+    const int r_out = output_format.r;
+    const int b_out = output_format.b;
+    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_g, _mm_add_ps(vec_r, 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[r_out] = otdata_r[output[0]];
+        dest[1]     = otdata_g[output[1]];
+        dest[b_out] = 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_g, _mm_add_ps(vec_r, 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[r_out] = otdata_r[output[0]];
+    dest[1]     = otdata_g[output[1]];
+    dest[b_out] = otdata_b[output[2]];
+}
+
+static inline __m128i __mm_swizzle_epi32(__m128i value, int bgra)
+{
+    return bgra ? _mm_shuffle_epi32(value, _MM_SHUFFLE(0, 1, 2, 3)) :
+                  _mm_shuffle_epi32(value, _MM_SHUFFLE(0, 3, 2, 1)) ;
+}
+
+void qcms_transform_data_tetra_clut_rgba_sse2(qcms_transform *transform,
+                                              unsigned char *src,
+                                              unsigned char *dest,
+                                              size_t length,
+                                              qcms_format_type output_format)
+{
+    const int bgra = output_format.r;
+
+    size_t i;
+
+    const int xy_len_3 = 3 * 1;
+    const int x_len_3 = 3 * transform->grid_size;
+    const int len_3 = x_len_3 * transform->grid_size;
+
+    const __m128 __255 = _mm_set1_ps(255.0f);
+    const __m128 __one = _mm_set1_ps(1.0f);
+    const __m128 __000 = _mm_setzero_ps();
+
+    const float* r_table = transform->r_clut;
+    const float* g_table = transform->g_clut;
+    const float* b_table = transform->b_clut;
+
+    int i3, i2, i1, i0;
+
+    __m128 c3;
+    __m128 c2;
+    __m128 c1;
+    __m128 c0;
+
+    if (!(transform->transform_flags & TRANSFORM_FLAG_CLUT_CACHE))
+        qcms_transform_build_clut_cache(transform);
+
+    for (i = 0; i < length; ++i) {
+        unsigned char in_r = *src++;
+        unsigned char in_g = *src++;
+        unsigned char in_b = *src++;
+
+        // initialize the output result with the alpha channel only
+
+        __m128i result = _mm_setr_epi32(*src++, 0, 0, 0);
+
+        // get the input point r.xyz relative to the subcube origin
+
+        float rx = transform->r_cache[in_r];
+        float ry = transform->r_cache[in_g];
+        float rz = transform->r_cache[in_b];
+
+        // load and LUT scale the subcube maximum vertex
+
+        int xn = transform->ceil_cache[in_r] * len_3;
+        int yn = transform->ceil_cache[in_g] * x_len_3;
+        int zn = transform->ceil_cache[in_b] * xy_len_3;
+
+        // load and LUT scale the subcube origin vertex
+
+        int x0 = transform->floor_cache[in_r] * len_3;
+        int y0 = transform->floor_cache[in_g] * x_len_3;
+        int z0 = transform->floor_cache[in_b] * xy_len_3;
+
+        // tetrahedral interpolate the input color r.xyz
+
+#define TETRA_LOOKUP_CLUT(i3, i2, i1, i0) \
+        c0 = _mm_set_ps(b_table[i0], g_table[i0], r_table[i0], 0.f), \
+        c1 = _mm_set_ps(b_table[i1], g_table[i1], r_table[i1], 0.f), \
+        c2 = _mm_set_ps(b_table[i2], g_table[i2], r_table[i2], 0.f), \
+        c3 = _mm_set_ps(b_table[i3], g_table[i3], r_table[i3], 0.f)
+
+        i0 = x0 + y0 + z0;
+
+        if (rx >= ry) {
+
+            if (ry >= rz) {         // rx >= ry && ry >= rz
+
+                i3 = yn + (i1 = xn);
+                i1 += i0 - x0;
+                i2 = i3 + z0;
+                i3 += zn;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c3 = _mm_sub_ps(c3, c2);
+                c2 = _mm_sub_ps(c2, c1);
+                c1 = _mm_sub_ps(c1, c0);
+
+            } else if (rx >= rz) {  // rx >= rz && rz >= ry
+
+                i3 = zn + (i1 = xn);
+                i1 += i0 - x0;
+                i2 = i3 + yn;
+                i3 += y0;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c2 = _mm_sub_ps(c2, c3);
+                c3 = _mm_sub_ps(c3, c1);
+                c1 = _mm_sub_ps(c1, c0);
+
+            } else {                // rz > rx && rx >= ry
+
+                i2 = xn + (i3 = zn);
+                i3 += i0 - z0;
+                i1 = i2 + y0;
+                i2 += yn;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c2 = _mm_sub_ps(c2, c1);
+                c1 = _mm_sub_ps(c1, c3);
+                c3 = _mm_sub_ps(c3, c0);
+            }
+        } else {
+
+            if (rx >= rz) {         // ry > rx && rx >= rz
+
+                i3 = xn + (i2 = yn);
+                i2 += i0 - y0;
+                i1 = i3 + z0;
+                i3 += zn;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c3 = _mm_sub_ps(c3, c1);
+                c1 = _mm_sub_ps(c1, c2);
+                c2 = _mm_sub_ps(c2, c0);
+
+            } else if (ry >= rz) {  // ry >= rz && rz > rx
+
+                i3 = zn + (i2 = yn);
+                i2 += i0 - y0;
+                i1 = i3 + xn;
+                i3 += x0;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c1 = _mm_sub_ps(c1, c3);
+                c3 = _mm_sub_ps(c3, c2);
+                c2 = _mm_sub_ps(c2, c0);
+
+            } else {                // rz > ry && ry > rx
+
+                i2 = yn + (i3 = zn);
+                i3 += i0 - z0;
+                i1 = i2 + xn;
+                i2 += x0;
+
+                TETRA_LOOKUP_CLUT(i3, i2, i1, i0);
+
+                c1 = _mm_sub_ps(c1, c2);
+                c2 = _mm_sub_ps(c2, c3);
+                c3 = _mm_sub_ps(c3, c0);
+            }
+        }
+
+        // output.xyz = column_matrix(c1, c2, c3) x r.xyz + c0.xyz
+
+        c0 = _mm_add_ps(c0, _mm_mul_ps(c1, _mm_set1_ps(rx)));
+        c0 = _mm_add_ps(c0, _mm_mul_ps(c2, _mm_set1_ps(ry)));
+        c0 = _mm_add_ps(c0, _mm_mul_ps(c3, _mm_set1_ps(rz)));
+
+        // clamp to [0.0..1.0], then scale by 255
+
+        c0 = _mm_max_ps(c0, __000);
+        c0 = _mm_min_ps(c0, __one);
+        c0 = _mm_mul_ps(c0, __255);
+
+        // int(c0) with float rounding, add alpha
+
+        result = _mm_add_epi32(result, _mm_cvtps_epi32(c0));
+
+        // swizzle and repack in result low bytes
+
+        result = __mm_swizzle_epi32(result, bgra);
+        result = _mm_packus_epi16(result, result);
+        result = _mm_packus_epi16(result, result);
+
+        // store into uint32_t* pixel destination
+
+        *(uint32_t *)dest = _mm_cvtsi128_si32(result);
+        dest += 4;
+    }
+}