mirror of
https://github.com/nothings/stb
synced 2024-12-15 12:22:55 +03:00
590 lines
20 KiB
C++
590 lines
20 KiB
C++
#if defined(_WIN32) && _MSC_VER > 1200
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#define STBIR_ASSERT(x) \
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if (!(x)) { \
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__debugbreak(); \
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} else
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#else
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#include <assert.h>
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#define STBIR_ASSERT(x) assert(x)
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#endif
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#define STB_IMAGE_RESIZE_IMPLEMENTATION
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#define STB_IMAGE_RESIZE_STATIC
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#include "stb_image_resize.h"
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#define STB_IMAGE_WRITE_IMPLEMENTATION
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#include "stb_image_write.h"
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#define STB_IMAGE_IMPLEMENTATION
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#include "stb_image.h"
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#ifdef _WIN32
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#include <sys/timeb.h>
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#endif
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#define MT_SIZE 624
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static size_t g_aiMT[MT_SIZE];
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static size_t g_iMTI = 0;
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// Mersenne Twister implementation from Wikipedia.
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// Avoiding use of the system rand() to be sure that our tests generate the same test data on any system.
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void mtsrand(size_t iSeed)
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{
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g_aiMT[0] = iSeed;
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for (size_t i = 1; i < MT_SIZE; i++)
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{
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size_t inner1 = g_aiMT[i - 1];
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size_t inner2 = (g_aiMT[i - 1] >> 30);
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size_t inner = inner1 ^ inner2;
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g_aiMT[i] = (0x6c078965 * inner) + i;
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}
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g_iMTI = 0;
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}
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size_t mtrand()
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{
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if (g_iMTI == 0)
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{
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for (size_t i = 0; i < MT_SIZE; i++)
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{
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size_t y = (0x80000000 & (g_aiMT[i])) + (0x7fffffff & (g_aiMT[(i + 1) % MT_SIZE]));
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g_aiMT[i] = g_aiMT[(i + 397) % MT_SIZE] ^ (y >> 1);
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if ((y % 2) == 1)
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g_aiMT[i] = g_aiMT[i] ^ 0x9908b0df;
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}
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}
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size_t y = g_aiMT[g_iMTI];
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y = y ^ (y >> 11);
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y = y ^ ((y << 7) & (0x9d2c5680));
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y = y ^ ((y << 15) & (0xefc60000));
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y = y ^ (y >> 18);
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g_iMTI = (g_iMTI + 1) % MT_SIZE;
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return y;
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}
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inline float mtfrand()
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{
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const int ninenine = 999999;
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return (float)(mtrand() % ninenine)/ninenine;
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}
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void test_suite();
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int main(int argc, char** argv)
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{
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unsigned char* input_data;
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unsigned char* output_data;
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int w, h;
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int n;
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int out_w, out_h, out_stride;
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#if 1
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test_suite();
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return 0;
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#endif
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if (argc <= 1)
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{
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printf("No input image\n");
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return 1;
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}
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input_data = stbi_load(argv[1], &w, &h, &n, 0);
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if (!input_data)
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{
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printf("Input image could not be loaded");
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return 1;
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}
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out_w = 512;
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out_h = 512;
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out_stride = (out_w + 10) * n;
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output_data = (unsigned char*)malloc(out_stride * out_h);
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int in_w = 512;
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int in_h = 512;
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float s0 = 0.25f;
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float t0 = 0.25f;
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float s1 = 0.75f;
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float t1 = 0.75f;
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// Cut out the outside 64 pixels all around to test the stride.
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int border = 64;
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STBIR_ASSERT(in_w + border <= w);
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STBIR_ASSERT(in_h + border <= h);
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#ifdef PERF_TEST
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struct timeb initial_time_millis, final_time_millis;
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long average = 0;
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for (int j = 0; j < 10; j++)
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{
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ftime(&initial_time_millis);
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for (int i = 0; i < 100; i++)
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stbir_resize_arbitrary2(NULL, input_data + w * border * n + border * n, in_w, in_h, w*n, output_data, out_w, out_h, out_stride, 0, 0, 1, 1, NULL, n, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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ftime(&final_time_millis);
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long lapsed_ms = (long)(final_time_millis.time - initial_time_millis.time) * 1000 + (final_time_millis.millitm - initial_time_millis.millitm);
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printf("Resample: %dms\n", lapsed_ms);
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average += lapsed_ms;
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}
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average /= 10;
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printf("Average: %dms\n", average);
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#else
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stbir_resize_arbitrary2(NULL, input_data + w * border * n + border * n, in_w, in_h, w*n, output_data, out_w, out_h, out_stride, s0, t0, s1, t1, NULL, n, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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#endif
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stbi_image_free(input_data);
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stbi_write_png("output.png", out_w, out_h, n, output_data, out_stride);
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free(output_data);
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return 0;
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}
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void resize_image(const char* filename, float width_percent, float height_percent, stbir_filter filter, stbir_edge edge, stbir_colorspace colorspace, const char* output_filename)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(filename, &w, &h, &n, 0);
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if (!input_data)
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{
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printf("Input image could not be loaded\n");
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return;
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}
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int out_w = (int)(w * width_percent);
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int out_h = (int)(h * height_percent);
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unsigned char* output_data = (unsigned char*)malloc(out_w * out_h * n);
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stbir_resize_arbitrary2(NULL, input_data, w, h, 0, output_data, out_w, out_h, 0, 0, 0, 1, 1, NULL, n, -1, 0, STBIR_TYPE_UINT8, filter, filter, edge, edge, colorspace);
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stbi_image_free(input_data);
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stbi_write_png(output_filename, out_w, out_h, n, output_data, 0);
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free(output_data);
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}
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template <typename F, typename T>
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void convert_image(const F* input, T* output, int length)
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{
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double f = (pow(2.0, 8.0 * sizeof(T)) - 1) / (pow(2.0, 8.0 * sizeof(F)) - 1);
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for (int i = 0; i < length; i++)
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output[i] = (T)(((double)input[i]) * f);
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}
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template <typename T>
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void test_format(const char* file, float width_percent, float height_percent, stbir_datatype type, stbir_colorspace colorspace)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(file, &w, &h, &n, 0);
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if (input_data == NULL)
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return;
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int new_w = (int)(w * width_percent);
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int new_h = (int)(h * height_percent);
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T* T_data = (T*)malloc(w * h * n * sizeof(T));
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convert_image<unsigned char, T>(input_data, T_data, w * h * n);
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T* output_data = (T*)malloc(new_w * new_h * n * sizeof(T));
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stbir_resize_arbitrary2(NULL, T_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, 1, 1, NULL, n, -1, 0, type, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, colorspace);
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free(T_data);
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stbi_image_free(input_data);
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unsigned char* char_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(char));
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convert_image<T, unsigned char>(output_data, char_data, new_w * new_h * n);
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char output[200];
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sprintf(output, "test-output/type-%d-%d-%d-%d-%s", type, colorspace, new_w, new_h, file);
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stbi_write_png(output, new_w, new_h, n, char_data, 0);
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free(char_data);
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free(output_data);
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}
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void convert_image_float(const unsigned char* input, float* output, int length)
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{
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for (int i = 0; i < length; i++)
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output[i] = ((float)input[i])/255;
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}
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void convert_image_float(const float* input, unsigned char* output, int length)
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{
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for (int i = 0; i < length; i++)
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output[i] = (unsigned char)(input[i] * 255);
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}
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void test_float(const char* file, float width_percent, float height_percent, stbir_datatype type, stbir_colorspace colorspace)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(file, &w, &h, &n, 0);
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if (input_data == NULL)
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return;
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int new_w = (int)(w * width_percent);
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int new_h = (int)(h * height_percent);
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float* T_data = (float*)malloc(w * h * n * sizeof(float));
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convert_image_float(input_data, T_data, w * h * n);
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float* output_data = (float*)malloc(new_w * new_h * n * sizeof(float));
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stbir_resize_arbitrary2(NULL, T_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, 1, 1, NULL, n, -1, 0, type, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, colorspace);
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free(T_data);
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stbi_image_free(input_data);
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unsigned char* char_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(char));
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convert_image_float(output_data, char_data, new_w * new_h * n);
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char output[200];
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sprintf(output, "test-output/type-%d-%d-%d-%d-%s", type, colorspace, new_w, new_h, file);
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stbi_write_png(output, new_w, new_h, n, char_data, 0);
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free(char_data);
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free(output_data);
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}
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void test_channels(const char* file, float width_percent, float height_percent, int channels)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(file, &w, &h, &n, 0);
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if (input_data == NULL)
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return;
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int new_w = (int)(w * width_percent);
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int new_h = (int)(h * height_percent);
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unsigned char* channels_data = (unsigned char*)malloc(w * h * channels * sizeof(unsigned char));
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for (int i = 0; i < w * h; i++)
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{
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int input_position = i * n;
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int output_position = i * channels;
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for (int c = 0; c < channels; c++)
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channels_data[output_position + c] = input_data[input_position + stbir__min(c, n)];
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}
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unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * channels * sizeof(unsigned char));
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stbir_resize_uint8_srgb(channels_data, w, h, 0, output_data, new_w, new_h, 0, channels);
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free(channels_data);
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stbi_image_free(input_data);
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char output[200];
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sprintf(output, "test-output/channels-%d-%d-%d-%s", channels, new_w, new_h, file);
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stbi_write_png(output, new_w, new_h, channels, output_data, 0);
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free(output_data);
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}
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void test_subpixel(const char* file, float width_percent, float height_percent, float s1, float t1)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(file, &w, &h, &n, 0);
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if (input_data == NULL)
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return;
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s1 = ((float)w - 1 + s1)/w;
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t1 = ((float)h - 1 + t1)/h;
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int new_w = (int)(w * width_percent);
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int new_h = (int)(h * height_percent);
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unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(unsigned char));
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stbir_resize_arbitrary2(NULL, input_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, s1, t1, NULL, n, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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stbi_image_free(input_data);
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char output[200];
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sprintf(output, "test-output/subpixel-%d-%d-%f-%f-%s", new_w, new_h, s1, t1, file);
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stbi_write_png(output, new_w, new_h, n, output_data, 0);
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free(output_data);
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}
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void test_premul(const char* file)
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{
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int w, h, n;
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unsigned char* input_data = stbi_load(file, &w, &h, &n, 4);
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n = 4;
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if (input_data == NULL)
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return;
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// Set alpha for the top half.
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for (int x = 0; x < w; x++)
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{
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for (int y = 0; y < h / 2; y++)
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input_data[(y*w + x)*n + 3] = input_data[(y*w + x)*n + 0];
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}
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stbi_write_png("test-output/premul-original.png", w, h, n, input_data, 0);
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int new_w = (int)(w * .1);
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int new_h = (int)(h * .1);
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unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(unsigned char));
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stbir_resize_arbitrary2(NULL, input_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, 1, 1, NULL, n, 3, STBIR_FLAG_NONPREMUL_ALPHA, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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char output[200];
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sprintf(output, "test-output/premul-%s", file);
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stbi_write_png(output, new_w, new_h, n, output_data, 0);
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stbir_resize_arbitrary2(NULL, input_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, 1, 1, NULL, n, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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sprintf(output, "test-output/nopremul-%s", file);
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stbi_write_png(output, new_w, new_h, n, output_data, 0);
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stbi_image_free(input_data);
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free(output_data);
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}
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// test that splitting a pow-2 image into tiles produces identical results
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void test_subpixel_1()
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{
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unsigned char image[8 * 8];
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mtsrand(0);
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for (int i = 0; i < sizeof(image); i++)
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image[i] = mtrand() % 255;
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unsigned char output_data[16 * 16];
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stbir_resize_arbitrary2(NULL, image, 8, 8, 0, output_data, 16, 16, 0, 0, 0, 1, 1, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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unsigned char output_left[8 * 16];
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unsigned char output_right[8 * 16];
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stbir_resize_arbitrary2(NULL, image, 8, 8, 0, output_left, 8, 16, 0, 0, 0, 0.5f, 1, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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stbir_resize_arbitrary2(NULL, image, 8, 8, 0, output_right, 8, 16, 0, 0.5f, 0, 1, 1, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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for (int x = 0; x < 8; x++)
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{
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for (int y = 0; y < 16; y++)
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{
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STBIR_ASSERT(output_data[y * 16 + x] == output_left[y * 8 + x]);
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STBIR_ASSERT(output_data[y * 16 + x + 8] == output_right[y * 8 + x]);
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}
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}
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}
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// test that replicating an image and using a subtile of it produces same results as wraparound
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void test_subpixel_2()
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{
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unsigned char image[8 * 8];
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mtsrand(0);
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for (int i = 0; i < sizeof(image); i++)
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image[i] = mtrand() % 255;
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unsigned char large_image[32 * 32];
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for (int x = 0; x < 8; x++)
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{
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for (int y = 0; y < 8; y++)
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{
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for (int i = 0; i < 4; i++)
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{
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for (int j = 0; j < 4; j++)
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large_image[j*4*8*8 + i*8 + y*4*8 + x] = image[y*8 + x];
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}
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}
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}
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unsigned char output_data_1[16 * 16];
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unsigned char output_data_2[16 * 16];
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stbir_resize_arbitrary2(NULL, image, 8, 8, 0, output_data_1, 16, 16, 0, 0, 0, 1, 1, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_WRAP, STBIR_EDGE_WRAP, STBIR_COLORSPACE_SRGB);
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stbir_resize_arbitrary2(NULL, large_image, 32, 32, 0, output_data_2, 16, 16, 0, 0.25f, 0.25f, 0.5f, 0.5f, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
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{for (int x = 0; x < 16; x++)
|
|
{
|
|
for (int y = 0; y < 16; y++)
|
|
STBIR_ASSERT(output_data_1[y * 16 + x] == output_data_2[y * 16 + x]);
|
|
}}
|
|
}
|
|
|
|
// test that 0,0,1,1 subpixel produces same result as no-rect
|
|
void test_subpixel_3()
|
|
{
|
|
unsigned char image[8 * 8];
|
|
|
|
mtsrand(0);
|
|
|
|
for (int i = 0; i < sizeof(image); i++)
|
|
image[i] = mtrand() % 255;
|
|
|
|
unsigned char output_data_1[32 * 32];
|
|
unsigned char output_data_2[32 * 32];
|
|
|
|
stbir_resize_region(image, 8, 8, 0, output_data_1, 32, 32, 0, STBIR_TYPE_UINT8, 1,0,-1, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_COLORSPACE_LINEAR, NULL, 0, 0, 1, 1);
|
|
stbir_resize_uint8(image, 8, 8, 0, output_data_2, 32, 32, 0, 1);
|
|
|
|
for (int x = 0; x < 32; x++)
|
|
{
|
|
for (int y = 0; y < 32; y++)
|
|
STBIR_ASSERT(output_data_1[y * 32 + x] == output_data_2[y * 32 + x]);
|
|
}
|
|
}
|
|
|
|
// test that 1:1 resample using s,t=0,0,1,1 with bilinear produces original image
|
|
void test_subpixel_4()
|
|
{
|
|
unsigned char image[8 * 8];
|
|
|
|
mtsrand(0);
|
|
|
|
for (int i = 0; i < sizeof(image); i++)
|
|
image[i] = mtrand() % 255;
|
|
|
|
unsigned char output[8 * 8];
|
|
|
|
stbir_resize_arbitrary2(NULL, image, 8, 8, 0, output, 8, 8, 0, 0, 0, 1, 1, NULL, 1, -1, 0, STBIR_TYPE_UINT8, STBIR_FILTER_BILINEAR, STBIR_FILTER_BILINEAR, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR);
|
|
STBIR_ASSERT(memcmp(image, output, 8 * 8) == 0);
|
|
}
|
|
|
|
void test_suite()
|
|
{
|
|
int i;
|
|
|
|
test_subpixel_1();
|
|
test_subpixel_2();
|
|
test_subpixel_3();
|
|
test_subpixel_4();
|
|
|
|
test_premul("barbara.png");
|
|
|
|
for (i = 0; i < 10; i++)
|
|
test_subpixel("barbara.png", 0.5f, 0.5f, (float)i / 10, 1);
|
|
|
|
for (i = 0; i < 10; i++)
|
|
test_subpixel("barbara.png", 0.5f, 0.5f, 1, (float)i / 10);
|
|
|
|
for (i = 0; i < 10; i++)
|
|
test_subpixel("barbara.png", 2, 2, (float)i / 10, 1);
|
|
|
|
for (i = 0; i < 10; i++)
|
|
test_subpixel("barbara.png", 2, 2, 1, (float)i / 10);
|
|
|
|
// Channels test
|
|
test_channels("barbara.png", 0.5f, 0.5f, 1);
|
|
test_channels("barbara.png", 0.5f, 0.5f, 2);
|
|
test_channels("barbara.png", 0.5f, 0.5f, 3);
|
|
test_channels("barbara.png", 0.5f, 0.5f, 4);
|
|
|
|
test_channels("barbara.png", 2, 2, 1);
|
|
test_channels("barbara.png", 2, 2, 2);
|
|
test_channels("barbara.png", 2, 2, 3);
|
|
test_channels("barbara.png", 2, 2, 4);
|
|
|
|
// Edge behavior tests
|
|
resize_image("hgradient.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR, "test-output/hgradient-clamp.png");
|
|
resize_image("hgradient.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_WRAP, STBIR_COLORSPACE_LINEAR, "test-output/hgradient-wrap.png");
|
|
|
|
resize_image("vgradient.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR, "test-output/vgradient-clamp.png");
|
|
resize_image("vgradient.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_WRAP, STBIR_COLORSPACE_LINEAR, "test-output/vgradient-wrap.png");
|
|
|
|
resize_image("1px-border.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_REFLECT, STBIR_COLORSPACE_LINEAR, "test-output/1px-border-reflect.png");
|
|
resize_image("1px-border.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR, "test-output/1px-border-clamp.png");
|
|
|
|
// sRGB tests
|
|
resize_image("gamma_colors.jpg", .5f, .5f, STBIR_FILTER_CATMULLROM, STBIR_EDGE_REFLECT, STBIR_COLORSPACE_SRGB, "test-output/gamma_colors.jpg");
|
|
resize_image("gamma_2.2.jpg", .5f, .5f, STBIR_FILTER_CATMULLROM, STBIR_EDGE_REFLECT, STBIR_COLORSPACE_SRGB, "test-output/gamma_2.2.jpg");
|
|
resize_image("gamma_dalai_lama_gray.jpg", .5f, .5f, STBIR_FILTER_CATMULLROM, STBIR_EDGE_REFLECT, STBIR_COLORSPACE_SRGB, "test-output/gamma_dalai_lama_gray.jpg");
|
|
|
|
// filter tests
|
|
resize_image("barbara.png", 2, 2, STBIR_FILTER_NEAREST, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-upsample-nearest.png");
|
|
resize_image("barbara.png", 2, 2, STBIR_FILTER_BILINEAR, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-upsample-bilinear.png");
|
|
resize_image("barbara.png", 2, 2, STBIR_FILTER_BICUBIC, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-upsample-bicubic.png");
|
|
resize_image("barbara.png", 2, 2, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-upsample-catmullrom.png");
|
|
resize_image("barbara.png", 2, 2, STBIR_FILTER_MITCHELL, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-upsample-mitchell.png");
|
|
|
|
resize_image("barbara.png", 0.5f, 0.5f, STBIR_FILTER_NEAREST, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-downsample-nearest.png");
|
|
resize_image("barbara.png", 0.5f, 0.5f, STBIR_FILTER_BILINEAR, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-downsample-bilinear.png");
|
|
resize_image("barbara.png", 0.5f, 0.5f, STBIR_FILTER_BICUBIC, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-downsample-bicubic.png");
|
|
resize_image("barbara.png", 0.5f, 0.5f, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-downsample-catmullrom.png");
|
|
resize_image("barbara.png", 0.5f, 0.5f, STBIR_FILTER_MITCHELL, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, "test-output/barbara-downsample-mitchell.png");
|
|
|
|
for (i = 10; i < 100; i++)
|
|
{
|
|
char outname[200];
|
|
sprintf(outname, "test-output/barbara-width-%d.jpg", i);
|
|
resize_image("barbara.png", (float)i / 100, 1, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, outname);
|
|
}
|
|
|
|
for (i = 110; i < 500; i += 10)
|
|
{
|
|
char outname[200];
|
|
sprintf(outname, "test-output/barbara-width-%d.jpg", i);
|
|
resize_image("barbara.png", (float)i / 100, 1, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, outname);
|
|
}
|
|
|
|
for (i = 10; i < 100; i++)
|
|
{
|
|
char outname[200];
|
|
sprintf(outname, "test-output/barbara-height-%d.jpg", i);
|
|
resize_image("barbara.png", 1, (float)i / 100, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, outname);
|
|
}
|
|
|
|
for (i = 110; i < 500; i += 10)
|
|
{
|
|
char outname[200];
|
|
sprintf(outname, "test-output/barbara-height-%d.jpg", i);
|
|
resize_image("barbara.png", 1, (float)i / 100, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, outname);
|
|
}
|
|
|
|
for (i = 50; i < 200; i += 10)
|
|
{
|
|
char outname[200];
|
|
sprintf(outname, "test-output/barbara-width-height-%d.jpg", i);
|
|
resize_image("barbara.png", 100 / (float)i, (float)i / 100, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB, outname);
|
|
}
|
|
|
|
test_format<unsigned short>("barbara.png", 0.5, 2.0, STBIR_TYPE_UINT16, STBIR_COLORSPACE_SRGB);
|
|
test_format<unsigned short>("barbara.png", 0.5, 2.0, STBIR_TYPE_UINT16, STBIR_COLORSPACE_LINEAR);
|
|
test_format<unsigned short>("barbara.png", 2.0, 0.5, STBIR_TYPE_UINT16, STBIR_COLORSPACE_SRGB);
|
|
test_format<unsigned short>("barbara.png", 2.0, 0.5, STBIR_TYPE_UINT16, STBIR_COLORSPACE_LINEAR);
|
|
|
|
test_format<unsigned int>("barbara.png", 0.5, 2.0, STBIR_TYPE_UINT32, STBIR_COLORSPACE_SRGB);
|
|
test_format<unsigned int>("barbara.png", 0.5, 2.0, STBIR_TYPE_UINT32, STBIR_COLORSPACE_LINEAR);
|
|
test_format<unsigned int>("barbara.png", 2.0, 0.5, STBIR_TYPE_UINT32, STBIR_COLORSPACE_SRGB);
|
|
test_format<unsigned int>("barbara.png", 2.0, 0.5, STBIR_TYPE_UINT32, STBIR_COLORSPACE_LINEAR);
|
|
|
|
test_float("barbara.png", 0.5, 2.0, STBIR_TYPE_FLOAT, STBIR_COLORSPACE_SRGB);
|
|
test_float("barbara.png", 0.5, 2.0, STBIR_TYPE_FLOAT, STBIR_COLORSPACE_LINEAR);
|
|
test_float("barbara.png", 2.0, 0.5, STBIR_TYPE_FLOAT, STBIR_COLORSPACE_SRGB);
|
|
test_float("barbara.png", 2.0, 0.5, STBIR_TYPE_FLOAT, STBIR_COLORSPACE_LINEAR);
|
|
}
|
|
|
|
|