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libglitter_colour_model_convert_rasters_double.c
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libglitter_colour_model_convert_rasters_double.c
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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
static void
multiply_33(double *restrict *restrict outputs, size_t opos,
const double *restrict *restrict inputs, size_t ipos, const double matrix[3][3])
{
double i0 = inputs[0][ipos], i1 = inputs[1][ipos], i2 = inputs[2][ipos];
outputs[0][opos] = i0 * matrix[0][0] + i1 * matrix[0][1] + i2 * matrix[0][2];
outputs[1][opos] = i0 * matrix[1][0] + i1 * matrix[1][1] + i2 * matrix[1][2];
outputs[2][opos] = i0 * matrix[2][0] + i1 * matrix[2][1] + i2 * matrix[2][2];
}
static void
multiply_nn(size_t n, double *restrict *restrict outputs, size_t opos,
const double *restrict *restrict inputs, size_t ipos,
const double matrix[n][n], double buffer[restrict n])
{
size_t i, j;
for (j = 0; j < n; j++)
buffer[j] = inputs[j][ipos];
for (i = 0; i < n; i++) {
outputs[i][opos] = buffer[0] * matrix[i][0];
for (j = 1; j < n; j++)
outputs[i][opos] += buffer[j] * matrix[i][j];
}
}
static void
multiply_nm(size_t n, size_t m, double *restrict *restrict outputs /* m */, size_t opos,
const double *restrict *restrict inputs /* n */, size_t ipos,
const double matrix[m][n], double buffer[restrict n])
{
size_t i, j;
for (j = 0; j < n; j++)
buffer[j] = inputs[j][ipos];
for (i = 0; i < m; i++) {
outputs[i][opos] = buffer[0] * matrix[i][0];
for (j = 1; j < n; j++)
outputs[i][opos] += buffer[j] * matrix[i][j];
}
}
void
libglitter_colour_model_convert_rasters_double(size_t n, size_t m, double *restrict *restrict outputs /* m */,
const double *restrict *restrict inputs /* n */, size_t output_rowsize,
size_t output_cellsize, size_t input_rowsize, size_t input_cellsize,
size_t width, size_t height, const double (*matrix)[m] /* n */)
{
size_t y, x, output_i, input_i, output_blanking, input_blanking;
double *buffer;
output_blanking = (output_rowsize - width) * output_cellsize;
input_blanking = (input_rowsize - width) * input_cellsize;
output_i = 0;
input_i = 0;
if (n == 3 && m == 3) {
for (y = 0; y < height; y++, output_i += output_blanking, input_i += input_blanking)
for (x = 0; x < width; x++, output_i += output_cellsize, input_i += input_cellsize)
multiply_33(outputs, output_i, inputs, input_i, matrix);
} else if (n == m) {
buffer = alloca(n * sizeof(*buffer));
for (y = 0; y < height; y++, output_i += output_blanking, input_i += input_blanking)
for (x = 0; x < width; x++, output_i += output_cellsize, input_i += input_cellsize)
multiply_nn(n, outputs, output_i, inputs, input_i, matrix, buffer);
} else {
buffer = alloca(n * sizeof(*buffer));
for (y = 0; y < height; y++, output_i += output_blanking, input_i += input_blanking)
for (x = 0; x < width; x++, output_i += output_cellsize, input_i += input_cellsize)
multiply_nm(n, m, outputs, output_i, inputs, input_i, matrix, buffer);
}
}
#else
static void
check(int same_rasters)
{
double input1[4 * 15 * 3], input2[4 * 15 * 3], input3[4 * 15 * 3];
double output1[4 * 14 * 4], output2[4 * 14 * 4], output3[4 * 14 * 4];
double *inputs[3], *outputs[3], matrix[3][3], zeroes[4 * 15 * 4];
memset(zeroes, 0, sizeof(zeroes));
#define RESET\
do {\
inputs[0] = input1;\
inputs[1] = input2;\
inputs[2] = input3;\
outputs[0] = same_rasters ? input1 : output1;\
outputs[1] = same_rasters ? input2 : output2;\
outputs[2] = same_rasters ? input3 : output3;\
memset(input1, 0, sizeof(input1));\
memset(input2, 0, sizeof(input2));\
memset(input3, 0, sizeof(input3));\
memset(output1, 0, sizeof(output1));\
memset(output2, 0, sizeof(output2));\
memset(output3, 0, sizeof(output3));\
} while (0)
#define IPOS(Y, X) ((Y) * 15 * 3 + (X) * 3)
#define OPOS(Y, X) (same_rasters ? IPOS(Y, X) : (Y) * 14 * 4 + (X) * 4)
#define SET_(BUF, POS, R1C1, R1C2, R1C3, R1C4, R1C5, R2C1, R2C2, R2C3, R2C4, R2C5, R3C1, R3C2, R3C3, R3C4, R3C5)\
do {\
(BUF)[POS(0, 0)] = R1C1;\
(BUF)[POS(0, 1)] = R1C2;\
(BUF)[POS(0, 2)] = R1C3;\
(BUF)[POS(0, 3)] = R1C4;\
(BUF)[POS(0, 4)] = R1C5;\
(BUF)[POS(1, 0)] = R2C1;\
(BUF)[POS(1, 1)] = R2C2;\
(BUF)[POS(1, 2)] = R2C3;\
(BUF)[POS(1, 3)] = R2C4;\
(BUF)[POS(1, 4)] = R2C5;\
(BUF)[POS(2, 0)] = R3C1;\
(BUF)[POS(2, 1)] = R3C2;\
(BUF)[POS(2, 2)] = R3C3;\
(BUF)[POS(2, 3)] = R3C4;\
(BUF)[POS(2, 4)] = R3C5;\
} while (0)
#define SET(IBUF, R1C1, R1C2, R1C3, R1C4, R1C5, R2C1, R2C2, R2C3, R2C4, R2C5, R3C1, R3C2, R3C3, R3C4, R3C5)\
SET_(IBUF, IPOS, R1C1, R1C2, R1C3, R1C4, R1C5, R2C1, R2C2, R2C3, R2C4, R2C5, R3C1, R3C2, R3C3, R3C4, R3C5)\
#define CHECK(OBUF, R1C1, R1C2, R1C3, R1C4, R1C5, R2C1, R2C2, R2C3, R2C4, R2C5, R3C1, R3C2, R3C3, R3C4, R3C5)\
do {\
ASSERT((OBUF)[OPOS(0, 0)] == R1C1);\
ASSERT((OBUF)[OPOS(0, 1)] == R1C2);\
ASSERT((OBUF)[OPOS(0, 2)] == R1C3);\
ASSERT((OBUF)[OPOS(0, 3)] == R1C4);\
ASSERT((OBUF)[OPOS(0, 4)] == R1C5);\
ASSERT((OBUF)[OPOS(1, 0)] == R2C1);\
ASSERT((OBUF)[OPOS(1, 1)] == R2C2);\
ASSERT((OBUF)[OPOS(1, 2)] == R2C3);\
ASSERT((OBUF)[OPOS(1, 3)] == R2C4);\
ASSERT((OBUF)[OPOS(1, 4)] == R2C5);\
ASSERT((OBUF)[OPOS(2, 0)] == R3C1);\
ASSERT((OBUF)[OPOS(2, 1)] == R3C2);\
ASSERT((OBUF)[OPOS(2, 2)] == R3C3);\
ASSERT((OBUF)[OPOS(2, 3)] == R3C4);\
ASSERT((OBUF)[OPOS(2, 4)] == R3C5);\
SET_(OBUF, OPOS, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);\
ASSERT(!memcmp((OBUF), zeroes, same_rasters ? sizeof(*input1) : sizeof(*output1)));\
} while (0)
#define RUN(NINPUTS, NOUTPUTS)\
do {\
double mat[NOUTPUTS][NINPUTS];\
size_t i, j;\
for (i = 0; i < (NOUTPUTS); i++)\
for (j = 0; j < (NINPUTS); j++)\
mat[i][j] = matrix[i][j];\
libglitter_colour_model_convert_rasters_double(NINPUTS, NOUTPUTS, outputs, (void *)inputs,\
same_rasters ? 15 : 14, same_rasters ? 3 : 4,\
15, 3, 5, 3, (void *)mat);\
inputs[0] = input1;\
inputs[1] = input2;\
inputs[2] = input3;\
outputs[0] = same_rasters ? input1 : output1;\
outputs[1] = same_rasters ? input2 : output2;\
outputs[2] = same_rasters ? input3 : output3;\
} while (0)
RESET;
SET(inputs[0], 1, 5, 2, 6, 3, 9, 6, 4, 3, 1, 8, 7, 4, 9, 5);
matrix[0][0] = 3;
RUN(1, 1);
CHECK(outputs[0], 1*3, 5*3, 2*3, 6*3, 3*3, 9*3, 6*3, 4*3, 3*3, 1*3, 8*3, 7*3, 4*3, 9*3, 5*3);
RESET;
SET(inputs[0], 1, 2, 3, 4, 5, 2, 3, 4, 5, 6, 3, 4, 5, 6, 7);
SET(inputs[1], 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 6, 7, 8, 9, 1);
SET(inputs[2], 7, 8, 9, 1, 2, 8, 9, 1, 2, 3, 9, 1, 2, 3, 4);
matrix[0][0] = 1, matrix[1][0] = 3;
matrix[0][1] = 4, matrix[1][1] = 2;
matrix[0][2] = 2, matrix[1][2] = 6;
RUN(3, 2);
#define X(A, B, C) ((A) * 1 + (B) * 4 + (C) * 2)
CHECK(outputs[0], X(1,4,7), X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2),
X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3),
X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3), X(7,1,4));
#undef X
#define X(A, B, C) ((A) * 3 + (B) * 2 + (C) * 6)
CHECK(outputs[1], X(1,4,7), X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2),
X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3),
X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3), X(7,1,4));
#undef X
RESET;
SET(inputs[0], 1, 2, 3, 4, 5, 2, 3, 4, 5, 6, 3, 4, 5, 6, 7);
SET(inputs[1], 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 6, 7, 8, 9, 1);
matrix[0][0] = 7, matrix[1][0] = 4;
matrix[0][1] = 3, matrix[1][1] = 9;
RUN(2, 2);
#define X(A, B) ((A) * 7 + (B) * 3)
CHECK(outputs[0], X(1,4), X(2,5), X(3,6), X(4,7), X(5,8),
X(2,5), X(3,6), X(4,7), X(5,8), X(6,9),
X(3,6), X(4,7), X(5,8), X(6,9), X(7,1));
#undef X
#define X(A, B) ((A) * 4 + (B) * 9)
CHECK(outputs[1], X(1,4), X(2,5), X(3,6), X(4,7), X(5,8),
X(2,5), X(3,6), X(4,7), X(5,8), X(6,9),
X(3,6), X(4,7), X(5,8), X(6,9), X(7,1));
#undef X
RESET;
SET(inputs[0], 1, 2, 3, 4, 5, 2, 3, 4, 5, 6, 3, 4, 5, 6, 7);
SET(inputs[1], 4, 5, 6, 7, 8, 5, 6, 7, 8, 9, 6, 7, 8, 9, 1);
SET(inputs[2], 7, 8, 9, 1, 2, 8, 9, 1, 2, 3, 9, 1, 2, 3, 4);
matrix[0][0] = 7, matrix[1][0] = 1, matrix[2][0] = 4;
matrix[0][1] = 2, matrix[1][1] = 8, matrix[2][1] = 5;
matrix[0][2] = 6, matrix[1][2] = 7, matrix[2][2] = 6;
RUN(3, 3);
#define X(A, B, C) ((A) * 7 + (B) * 2 + (C) * 6)
CHECK(outputs[0], X(1,4,7), X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2),
X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3),
X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3), X(7,1,4));
#undef X
#define X(A, B, C) ((A) * 1 + (B) * 8 + (C) * 7)
CHECK(outputs[1], X(1,4,7), X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2),
X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3),
X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3), X(7,1,4));
#undef X
#define X(A, B, C) ((A) * 4 + (B) * 5 + (C) * 6)
CHECK(outputs[2], X(1,4,7), X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2),
X(2,5,8), X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3),
X(3,6,9), X(4,7,1), X(5,8,2), X(6,9,3), X(7,1,4));
#undef X
}
int
main(void)
{
check(0);
check(1);
}
#endif