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refactor internal interfaces to avoid passing things multiple times;

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finish prepping 'stbir__info' even before calculate_memory;
get rid of 'noinfo' functions since now calculate_memory doesn't need 'em;
add new binary-searched sRGB function (untested)
master
Sean Barrett ago%!(EXTRA string=11 years)
parent 24c540e1b0
commit aee30095c7
2 changed files with 203 additions and 265 deletions
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  1. 429
      stb_image_resize.h
  2. 39
      tests/resample_test.cpp

429
stb_image_resize.h
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@ -19,10 +19,10 @@
supported filters see the stbir_filter enum. To add a new filter,
write a filter function and add it to stbir__filter_info_table.
Latest revisions:
0.50 (2014-07-29) first released version
STBIR_MAX_CHANNELS: defaults to 16, if you need more, bump it up
See end of file for full revision history.
Revisions:
0.50 (2014-??-??) first released version
TODO:
Installable filters
@ -209,8 +209,8 @@ STBIRDEF int stbir_resize_subpixel(const void *input_pixels , int input_w , int
stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical,
stbir_filter filter_horizontal, stbir_filter filter_vertical,
stbir_colorspace space, void *alloc_context,
float x_scale, float x_offset,
float y_scale, float y_offset);
float x_scale, float y_scale,
float x_offset, float y_offset);
STBIRDEF int stbir_resize_region( const void *input_pixels , int input_w , int input_h , int input_stride_in_bytes,
void *output_pixels, int output_w, int output_h, int output_stride_in_bytes,
@ -290,6 +290,10 @@ typedef unsigned char stbir__validate_uint32[sizeof(stbir_uint32) == 4 ? 1 : -1]
#define STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_MITCHELL
#endif
#ifndef STBIR_MAX_CHANNELS
#define STBIR_MAX_CHANNELS 16
#endif
// must match stbir_datatype
static unsigned char stbir__type_size[] = {
1, // STBIR_TYPE_UINT8
@ -412,21 +416,44 @@ static float stbir__srgb_uchar_to_linear_float[256] = {
0.982251f, 0.991102f, 1.0f
};
static unsigned char stbir__linear_uchar_to_srgb_uchar[256] = {
0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68, 70, 73, 75, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94,
96, 97, 99, 100, 102, 103, 104, 106, 107, 109, 110, 111, 112, 114, 115, 116, 117, 118, 120, 121, 122, 123, 124, 125, 126,
127, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 142, 143, 144, 145, 146, 147, 148, 149, 150,
151, 151, 152, 153, 154, 155, 156, 157, 157, 158, 159, 160, 161, 161, 162, 163, 164, 165, 165, 166, 167, 168, 168, 169,
170, 171, 171, 172, 173, 174, 174, 175, 176, 176, 177, 178, 179, 179, 180, 181, 181, 182, 183, 183, 184, 185, 185, 186,
187, 187, 188, 189, 189, 190, 191, 191, 192, 193, 193, 194, 194, 195, 196, 196, 197, 197, 198, 199, 199, 200, 201, 201,
202, 202, 203, 204, 204, 205, 205, 206, 206, 207, 208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214, 214, 215,
215, 216, 217, 217, 218, 218, 219, 219, 220, 220, 221, 221, 222, 222, 223, 223, 224, 224, 225, 226, 226, 227, 227, 228,
228, 229, 229, 230, 230, 231, 231, 232, 232, 233, 233, 234, 234, 235, 235, 236, 236, 237, 237, 237, 238, 238, 239, 239,
240, 240, 241, 241, 242, 242, 243, 243, 244, 244, 245, 245, 245, 246, 246, 247, 247, 248, 248, 249, 249, 250, 250, 251,
251, 251, 252, 252, 253, 253, 254, 254, 255
// sRGB transition values, scaled by 1<<28
static int stbir__srgb_offset_to_linear_scaled[256] =
{
40579, 121738, 202897, 284056, 365216, 446375, 527534, 608693,
689852, 771011, 852421, 938035, 1028466, 1123787, 1224073, 1329393,
1439819, 1555418, 1676257, 1802402, 1933917, 2070867, 2213313, 2361317,
2514938, 2674237, 2839271, 3010099, 3186776, 3369359, 3557903, 3752463,
3953090, 4159840, 4372764, 4591913, 4817339, 5049091, 5287220, 5531775,
5782804, 6040356, 6304477, 6575216, 6852618, 7136729, 7427596, 7725263,
8029775, 8341176, 8659511, 8984821, 9317151, 9656544, 10003040, 10356683,
10717513, 11085572, 11460901, 11843540, 12233529, 12630908, 13035717, 13447994,
13867779, 14295110, 14730025, 15172563, 15622760, 16080655, 16546285, 17019686,
17500894, 17989948, 18486882, 18991734, 19504536, 20025326, 20554138, 21091010,
21635972, 22189062, 22750312, 23319758, 23897432, 24483368, 25077600, 25680162,
26291086, 26910406, 27538152, 28174360, 28819058, 29472282, 30134062, 30804430,
31483418, 32171058, 32867378, 33572412, 34286192, 35008744, 35740104, 36480296,
37229356, 37987316, 38754196, 39530036, 40314860, 41108700, 41911584, 42723540,
43544600, 44374792, 45214140, 46062680, 46920440, 47787444, 48663720, 49549300,
50444212, 51348480, 52262136, 53185204, 54117712, 55059688, 56011160, 56972156,
57942704, 58922824, 59912552, 60911908, 61920920, 62939616, 63968024, 65006168,
66054072, 67111760, 68179272, 69256616, 70343832, 71440936, 72547952, 73664920,
74791848, 75928776, 77075720, 78232704, 79399760, 80576904, 81764168, 82961576,
84169152, 85386920, 86614904, 87853120, 89101608, 90360384, 91629480, 92908904,
94198688, 95498864, 96809440, 98130456, 99461928, 100803872, 102156320, 103519296,
104892824, 106276920, 107671616, 109076928, 110492880, 111919504, 113356808, 114804824,
116263576, 117733080, 119213360, 120704448, 122206352, 123719104, 125242720, 126777232,
128322648, 129879000, 131446312, 133024600, 134613888, 136214192, 137825552, 139447968,
141081456, 142726080, 144381808, 146048704, 147726768, 149416016, 151116496, 152828192,
154551168, 156285408, 158030944, 159787808, 161556000, 163335568, 165126512, 166928864,
168742640, 170567856, 172404544, 174252704, 176112384, 177983568, 179866320, 181760640,
183666528, 185584032, 187513168, 189453952, 191406400, 193370544, 195346384, 197333952,
199333264, 201344352, 203367216, 205401904, 207448400, 209506752, 211576960, 213659056,
215753056, 217858976, 219976832, 222106656, 224248464, 226402272, 228568096, 230745952,
232935872, 235137872, 237351968, 239578176, 241816512, 244066992, 246329648, 248604512,
250891568, 253190848, 255502368, 257826160, 260162240, 262510608, 264871312, 267244336,
};
float stbir__srgb_to_linear(float f)
static float stbir__srgb_to_linear(float f)
{
if (f <= 0.04045f)
return f / 12.92f;
@ -434,7 +461,7 @@ float stbir__srgb_to_linear(float f)
return (float)pow((f + 0.055f) / 1.055f, 2.4f);
}
float stbir__linear_to_srgb(float f)
static float stbir__linear_to_srgb(float f)
{
if (f <= 0.0031308f)
return f * 12.92f;
@ -442,7 +469,21 @@ float stbir__linear_to_srgb(float f)
return 1.055f * (float)pow(f, 1 / 2.4f) - 0.055f;
}
static unsigned char stbir__linear_to_srgb_uchar(float f)
{
int x = (int) (f * (1 << 28)); // has headroom so you don't need to clamp
int v = 0;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+128 ]) v += 128;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 64 ]) v += 64;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 32 ]) v += 32;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 16 ]) v += 16;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 8 ]) v += 8;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 4 ]) v += 4;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 2 ]) v += 2;
if (x >= stbir__srgb_offset_to_linear_scaled[ v+ 1 ]) v += 1;
return (unsigned char) v;
}
static float stbir__filter_nearest(float x)
{
@ -502,7 +543,7 @@ static float stbir__filter_mitchell(float x)
static stbir__filter_info stbir__filter_info_table[] = {
{ NULL, 0.0f },
{ stbir__filter_nearest, 0.5f },
{ stbir__filter_nearest, 0.5f }, // 0.000001?
{ stbir__filter_bilinear, 1.0f },
{ stbir__filter_bicubic, 2.0f },
{ stbir__filter_catmullrom, 2.0f },
@ -564,28 +605,18 @@ stbir__inline static int stbir__get_filter_pixel_margin_vertical(stbir__info* st
return stbir__get_filter_pixel_width(stbir_info->vertical_filter, stbir_info->input_h, stbir_info->output_h, stbir_info->vertical_scale) / 2;
}
stbir__inline static int stbir__get_horizontal_contributors_noinfo(stbir_filter filter, int input_w, int output_w, float horizontal_scale)
stbir__inline static int stbir__get_horizontal_contributors(stbir__info* info)
{
if (stbir__use_upsampling(horizontal_scale))
return output_w;
if (stbir__use_upsampling(info->horizontal_scale))
return info->output_w;
else
return (input_w + stbir__get_filter_pixel_margin(filter, input_w, output_w, horizontal_scale) * 2);
return (info->input_w + stbir__get_filter_pixel_margin(info->horizontal_filter, info->input_w, info->output_w, info->horizontal_scale) * 2);
}
stbir__inline static int stbir__get_horizontal_contributors(stbir__info* stbir_info)
stbir__inline static int stbir__get_total_coefficients(stbir__info* info)
{
return stbir__get_horizontal_contributors_noinfo(stbir_info->horizontal_filter, stbir_info->input_w, stbir_info->output_w, stbir_info->horizontal_scale);
}
stbir__inline static int stbir__get_total_coefficients_noinfo(stbir_filter h_filter, int input_w, int output_w, float horizontal_scale)
{
return stbir__get_horizontal_contributors_noinfo(h_filter, input_w, output_w, horizontal_scale)
* stbir__get_filter_pixel_width (h_filter, input_w, output_w, horizontal_scale);
}
stbir__inline static int stbir__get_total_coefficients(stbir__info* stbir_info)
{
return stbir__get_total_coefficients_noinfo(stbir_info->horizontal_filter, stbir_info->input_w, stbir_info->output_w, stbir_info->horizontal_scale);
return stbir__get_horizontal_contributors(info)
* stbir__get_filter_pixel_width (info->horizontal_filter, info->input_w, info->output_w, info->horizontal_scale);
}
stbir__inline static stbir__contributors* stbir__get_contributor(stbir__info* stbir_info, int n)
@ -1151,7 +1182,7 @@ static stbir__inline void stbir__encode_pixel(stbir__info* stbir_info, void* out
case STBIR__DECODE(STBIR_TYPE_UINT8, STBIR_COLORSPACE_SRGB):
for (n = 0; n < channels; n++)
((unsigned char*)output_buffer)[output_pixel_index + n] = stbir__linear_uchar_to_srgb_uchar[(unsigned char)(stbir__saturate(encode_buffer[encode_pixel_index + n]) * 255)];
((unsigned char*)output_buffer)[output_pixel_index + n] = stbir__linear_to_srgb_uchar(encode_buffer[encode_pixel_index + n]);
if (!(stbir_info->flags&STBIR_FLAG_ALPHA_USES_COLORSPACE))
((unsigned char*)output_buffer)[output_pixel_index + alpha_channel] = (unsigned char)(stbir__saturate(encode_buffer[encode_pixel_index + alpha_channel]) * 255);
@ -1457,22 +1488,36 @@ static void stbir__buffer_loop_downsample(stbir__info* stbir_info)
stbir__empty_ring_buffer(stbir_info, stbir_info->output_h);
}
static void stbir__calculate_transform(stbir__info *stbir_info, int input_w, int input_h, int output_w, int output_h, float s0, float t0, float s1, float t1, float *transform)
static void stbir__setup(stbir__info *info, int input_w, int input_h, int output_w, int output_h, int channels)
{
info->input_w = input_w;
info->input_h = input_h;
info->output_w = output_w;
info->output_h = output_h;
info->channels = channels;
}
static void stbir__calculate_transform(stbir__info *info, float s0, float t0, float s1, float t1, float *transform)
{
info->s0 = s0;
info->t0 = t0;
info->s1 = s1;
info->t1 = t1;
if (transform)
{
stbir_info->horizontal_scale = transform[0];
stbir_info->vertical_scale = transform[1];
stbir_info->horizontal_shift = transform[2];
stbir_info->vertical_shift = transform[3];
info->horizontal_scale = transform[0];
info->vertical_scale = transform[1];
info->horizontal_shift = transform[2];
info->vertical_shift = transform[3];
}
else
{
stbir_info->horizontal_scale = ((float)output_w / input_w) / (s1 - s0);
stbir_info->vertical_scale = ((float)output_h / input_h) / (t1 - t0);
info->horizontal_scale = ((float)info->output_w / info->input_w) / (s1 - s0);
info->vertical_scale = ((float)info->output_h / info->input_h) / (t1 - t0);
stbir_info->horizontal_shift = s0 * input_w / (s1 - s0);
stbir_info->vertical_shift = t0 * input_h / (t1 - t0);
info->horizontal_shift = s0 * info->input_w / (s1 - s0);
info->vertical_shift = t0 * info->input_h / (t1 - t0);
}
}
@ -1486,26 +1531,25 @@ static void stbir__choose_filter(stbir__info *info, stbir_filter h_filter, stbir
info->vertical_filter = v_filter;
}
static stbir_uint32 stbir__calculate_memory(stbir__info *stbir_info, int input_w, int input_h, int output_w, int output_h, float s0, float t0, float s1, float t1, int channels)
static stbir_uint32 stbir__calculate_memory(stbir__info *info)
{
int pixel_margin = stbir__get_filter_pixel_margin(stbir_info->horizontal_filter, input_w, output_w, stbir_info->horizontal_scale);
int filter_height = stbir__get_filter_pixel_width(stbir_info->vertical_filter, input_h, output_h, stbir_info->vertical_scale);
int pixel_margin = stbir__get_filter_pixel_margin(info->horizontal_filter, info->input_w, info->output_w, info->horizontal_scale);
int filter_height = stbir__get_filter_pixel_width(info->vertical_filter, info->input_h, info->output_h, info->vertical_scale);
int info_size = sizeof(stbir__info);
int contributors_size = stbir__get_horizontal_contributors_noinfo(stbir_info->horizontal_filter, input_w, output_w, stbir_info->horizontal_scale) * sizeof(stbir__contributors);
int horizontal_coefficients_size = stbir__get_total_coefficients_noinfo(stbir_info->horizontal_filter, input_w, output_w, stbir_info->horizontal_scale) * sizeof(float);
int contributors_size = stbir__get_horizontal_contributors(info) * sizeof(stbir__contributors);
int horizontal_coefficients_size = stbir__get_total_coefficients(info) * sizeof(float);
int vertical_coefficients_size = filter_height * sizeof(float);
int decode_buffer_size = (input_w + pixel_margin*2) * channels * sizeof(float);
int horizontal_buffer_size = output_w * channels * sizeof(float);
int ring_buffer_size = output_w * channels * filter_height * sizeof(float);
int encode_buffer_size = output_w * channels * sizeof(float);
int decode_buffer_size = (info->input_w + pixel_margin*2) * info->channels * sizeof(float);
int horizontal_buffer_size = info->output_w * info->channels * sizeof(float);
int ring_buffer_size = info->output_w * info->channels * filter_height * sizeof(float);
int encode_buffer_size = info->output_w * info->channels * sizeof(float);
STBIR_ASSERT(stbir_info->horizontal_filter != 0);
STBIR_ASSERT(stbir_info->horizontal_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late
STBIR_ASSERT(stbir_info->vertical_filter != 0);
STBIR_ASSERT(stbir_info->vertical_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late
STBIR_ASSERT(info->horizontal_filter != 0);
STBIR_ASSERT(info->horizontal_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late
STBIR_ASSERT(info->vertical_filter != 0);
STBIR_ASSERT(info->vertical_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table)); // this now happens too late
if (stbir__use_upsampling(stbir_info->horizontal_scale))
if (stbir__use_upsampling(info->horizontal_scale))
// The horizontal buffer is for when we're downsampling the height and we
// can't output the result of sampling the decode buffer directly into the
// ring buffers.
@ -1515,21 +1559,20 @@ static stbir_uint32 stbir__calculate_memory(stbir__info *stbir_info, int input_w
// and isn't used when height downsampling.
encode_buffer_size = 0;
return info_size + contributors_size + horizontal_coefficients_size + vertical_coefficients_size + decode_buffer_size + horizontal_buffer_size + ring_buffer_size + encode_buffer_size;
return contributors_size + horizontal_coefficients_size + vertical_coefficients_size + decode_buffer_size + horizontal_buffer_size + ring_buffer_size + encode_buffer_size;
}
static int stbir__resize_allocated(stbir__info *stbir_info,
const void* input_data, int input_w, int input_h, int input_stride_in_bytes,
void* output_data, int output_w, int output_h, int output_stride_in_bytes,
float s0, float t0, float s1, float t1, float *transform,
int channels, int alpha_channel, stbir_uint32 flags, stbir_datatype type, stbir_filter h_filter, stbir_filter v_filter,
static int stbir__resize_allocated(stbir__info *info,
const void* input_data, int input_stride_in_bytes,
void* output_data, int output_stride_in_bytes,
int alpha_channel, stbir_uint32 flags, stbir_datatype type,
stbir_edge edge_horizontal, stbir_edge edge_vertical, stbir_colorspace colorspace,
void* tempmem, size_t tempmem_size_in_bytes)
{
size_t memory_required = stbir__calculate_memory(stbir_info, input_w, input_h, output_w, output_h, s0, t0, s1, t1, channels);
size_t memory_required = stbir__calculate_memory(info);
int width_stride_input = input_stride_in_bytes ? input_stride_in_bytes : channels * input_w * stbir__type_size[type];
int width_stride_output = output_stride_in_bytes ? output_stride_in_bytes : channels * output_w * stbir__type_size[type];
int width_stride_input = input_stride_in_bytes ? input_stride_in_bytes : info->channels * info->input_w * stbir__type_size[type];
int width_stride_output = output_stride_in_bytes ? output_stride_in_bytes : info->channels * info->output_w * stbir__type_size[type];
#ifdef STBIR_DEBUG_OVERWRITE_TEST
#define OVERWRITE_ARRAY_SIZE 8
@ -1545,32 +1588,27 @@ static int stbir__resize_allocated(stbir__info *stbir_info,
memcpy(overwrite_tempmem_after_pre, &((unsigned char*)tempmem)[tempmem_size_in_bytes], OVERWRITE_ARRAY_SIZE);
#endif
STBIR_ASSERT(h_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table));
STBIR_ASSERT(v_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table));
STBIR_ASSERT(info->channels <= STBIR_MAX_CHANNELS);
STBIR_ASSERT(info->channels >= 0);
if (h_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table))
return 0;
if (v_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table))
if (info->channels > STBIR_MAX_CHANNELS || info->channels < 0)
return 0;
STBIR_ASSERT(s1 > s0);
STBIR_ASSERT(t1 > t0);
STBIR_ASSERT(info->horizontal_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table));
STBIR_ASSERT(info->vertical_filter < STBIR__ARRAY_SIZE(stbir__filter_info_table));
if (s1 <= s0 || t1 <= t0)
if (info->horizontal_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table))
return 0;
STBIR_ASSERT(s1 <= 1 && s0 >= 0 && t1 <= 1 && t0 >= 0);
if (s1 > 1 || s0 < 0 || t1 > 1 || t0 < 0)
if (info->vertical_filter >= STBIR__ARRAY_SIZE(stbir__filter_info_table))
return 0;
if (alpha_channel < 0)
flags = STBIR_FLAG_ALPHA_USES_COLORSPACE; // this shouldn't be necessary in the long run, but safety for now
flags = STBIR_FLAG_ALPHA_USES_COLORSPACE | STBIR_FLAG_PREMULTIPLIED_ALPHA;
if (!(flags&STBIR_FLAG_ALPHA_USES_COLORSPACE) || !(flags&STBIR_FLAG_PREMULTIPLIED_ALPHA))
STBIR_ASSERT(alpha_channel >= 0 && alpha_channel < channels);
STBIR_ASSERT(alpha_channel >= 0 && alpha_channel < info->channels);
if (alpha_channel >= channels)
if (alpha_channel >= info->channels)
return 0;
STBIR_ASSERT(tempmem);
@ -1585,69 +1623,57 @@ static int stbir__resize_allocated(stbir__info *stbir_info,
memset(tempmem, 0, tempmem_size_in_bytes);
stbir_info->input_data = input_data;
stbir_info->input_w = input_w;
stbir_info->input_h = input_h;
stbir_info->input_stride_bytes = width_stride_input;
stbir_info->output_data = output_data;
stbir_info->output_w = output_w;
stbir_info->output_h = output_h;
stbir_info->output_stride_bytes = width_stride_output;
stbir_info->s0 = s0;
stbir_info->t0 = t0;
stbir_info->s1 = s1;
stbir_info->t1 = t1;
stbir_info->channels = channels;
stbir_info->alpha_channel = alpha_channel;
stbir_info->flags = flags;
stbir_info->type = type;
//stbir_info->horizontal_filter = h_filter;
//stbir_info->vertical_filter = v_filter;
stbir_info->edge_horizontal = edge_horizontal;
stbir_info->edge_vertical = edge_vertical;
stbir_info->colorspace = colorspace;
stbir_info->ring_buffer_length_bytes = output_w * channels * sizeof(float);
stbir_info->decode_buffer_pixels = input_w + stbir__get_filter_pixel_margin_horizontal(stbir_info) * 2;
info->input_data = input_data;
info->input_stride_bytes = width_stride_input;
info->output_data = output_data;
info->output_stride_bytes = width_stride_output;
info->alpha_channel = alpha_channel;
info->flags = flags;
info->type = type;
info->edge_horizontal = edge_horizontal;
info->edge_vertical = edge_vertical;
info->colorspace = colorspace;
info->ring_buffer_length_bytes = info->output_w * info->channels * sizeof(float);
info->decode_buffer_pixels = info->input_w + stbir__get_filter_pixel_margin_horizontal(info) * 2;
#define STBIR__NEXT_MEMPTR(current, old, newtype) (newtype*)(((unsigned char*)current) + old)
stbir_info->horizontal_contributors = (stbir__contributors *) tempmem;
stbir_info->horizontal_coefficients = STBIR__NEXT_MEMPTR(stbir_info->horizontal_contributors, stbir__get_horizontal_contributors(stbir_info) * sizeof(stbir__contributors), float);
stbir_info->vertical_coefficients = STBIR__NEXT_MEMPTR(stbir_info->horizontal_coefficients, stbir__get_total_coefficients(stbir_info) * sizeof(float), float);
stbir_info->decode_buffer = STBIR__NEXT_MEMPTR(stbir_info->vertical_coefficients, stbir__get_filter_pixel_width_vertical(stbir_info) * sizeof(float), float);
info->horizontal_contributors = (stbir__contributors *) tempmem;
info->horizontal_coefficients = STBIR__NEXT_MEMPTR(info->horizontal_contributors, stbir__get_horizontal_contributors(info) * sizeof(stbir__contributors), float);
info->vertical_coefficients = STBIR__NEXT_MEMPTR(info->horizontal_coefficients, stbir__get_total_coefficients(info) * sizeof(float), float);
info->decode_buffer = STBIR__NEXT_MEMPTR(info->vertical_coefficients, stbir__get_filter_pixel_width_vertical(info) * sizeof(float), float);
if (stbir__use_height_upsampling(stbir_info))
if (stbir__use_height_upsampling(info))
{
stbir_info->horizontal_buffer = NULL;
stbir_info->ring_buffer = STBIR__NEXT_MEMPTR(stbir_info->decode_buffer, stbir_info->decode_buffer_pixels * channels * sizeof(float), float);
stbir_info->encode_buffer = STBIR__NEXT_MEMPTR(stbir_info->ring_buffer, stbir_info->ring_buffer_length_bytes * stbir__get_filter_pixel_width_horizontal(stbir_info), float);
info->horizontal_buffer = NULL;
info->ring_buffer = STBIR__NEXT_MEMPTR(info->decode_buffer, info->decode_buffer_pixels * info->channels * sizeof(float), float);
info->encode_buffer = STBIR__NEXT_MEMPTR(info->ring_buffer, info->ring_buffer_length_bytes * stbir__get_filter_pixel_width_horizontal(info), float);
STBIR__DEBUG_ASSERT((size_t)STBIR__NEXT_MEMPTR(stbir_info->encode_buffer, stbir_info->channels * sizeof(float), unsigned char) == (size_t)tempmem + tempmem_size_in_bytes);
STBIR__DEBUG_ASSERT((size_t)STBIR__NEXT_MEMPTR(info->encode_buffer, info->channels * sizeof(float), unsigned char) == (size_t)tempmem + tempmem_size_in_bytes);
}
else
{
stbir_info->horizontal_buffer = STBIR__NEXT_MEMPTR(stbir_info->decode_buffer, stbir_info->decode_buffer_pixels * channels * sizeof(float), float);
stbir_info->ring_buffer = STBIR__NEXT_MEMPTR(stbir_info->horizontal_buffer, output_w * channels * sizeof(float), float);
stbir_info->encode_buffer = NULL;
info->horizontal_buffer = STBIR__NEXT_MEMPTR(info->decode_buffer, info->decode_buffer_pixels * info->channels * sizeof(float), float);
info->ring_buffer = STBIR__NEXT_MEMPTR(info->horizontal_buffer, info->output_w * info->channels * sizeof(float), float);
info->encode_buffer = NULL;
STBIR__DEBUG_ASSERT((size_t)STBIR__NEXT_MEMPTR(stbir_info->ring_buffer, stbir_info->ring_buffer_length_bytes * stbir__get_filter_pixel_width_vertical(stbir_info), unsigned char) == (size_t)tempmem + tempmem_size_in_bytes);
STBIR__DEBUG_ASSERT((size_t)STBIR__NEXT_MEMPTR(info->ring_buffer, info->ring_buffer_length_bytes * stbir__get_filter_pixel_width_vertical(info), unsigned char) == (size_t)tempmem + tempmem_size_in_bytes);
}
#undef STBIR__NEXT_MEMPTR
// This signals that the ring buffer is empty
stbir_info->ring_buffer_begin_index = -1;
info->ring_buffer_begin_index = -1;
stbir__calculate_horizontal_filters(stbir_info);
stbir__calculate_horizontal_filters(info);
if (stbir__use_height_upsampling(stbir_info))
stbir__buffer_loop_upsample(stbir_info);
if (stbir__use_height_upsampling(info))
stbir__buffer_loop_upsample(info);
else
stbir__buffer_loop_downsample(stbir_info);
stbir__buffer_loop_downsample(info);
#ifdef STBIR_DEBUG_OVERWRITE_TEST
STBIR__DEBUG_ASSERT(memcmp(overwrite_output_before_pre, &((unsigned char*)output_data)[-OVERWRITE_ARRAY_SIZE], OVERWRITE_ARRAY_SIZE) == 0);
@ -1660,7 +1686,7 @@ static int stbir__resize_allocated(stbir__info *stbir_info,
}
STBIRDEF int stbir_resize_arbitrary2(
static int stbir_resize_arbitrary(
void *alloc_context,
const void* input_data, int input_w, int input_h, int input_stride_in_bytes,
void* output_data, int output_w, int output_h, int output_stride_in_bytes,
@ -1673,123 +1699,32 @@ STBIRDEF int stbir_resize_arbitrary2(
int result;
size_t memory_required;
void* extra_memory;
stbir__calculate_transform(&info, input_w, input_h, output_w, output_h, s0,t0,s1,t1,transform);
stbir__setup(&info, input_w, input_h, output_w, output_h, channels);
stbir__calculate_transform(&info, s0,t0,s1,t1,transform);
stbir__choose_filter(&info, h_filter, v_filter);
memory_required = stbir__calculate_memory(&info, input_w, input_h, output_w, output_h, 0, 0, 1, 1, channels);
memory_required = stbir__calculate_memory(&info);
extra_memory = STBIR_MALLOC(NULL, memory_required);
if (!extra_memory)
return 0;
result = stbir__resize_allocated(&info, input_data, input_w, input_h, input_stride_in_bytes, output_data, output_w, output_h, output_stride_in_bytes, s0, t0, s1, t1, NULL,
channels, alpha_channel, flags, type, h_filter, v_filter, edge_horizontal, edge_vertical, colorspace, extra_memory, memory_required);
result = stbir__resize_allocated(&info, input_data, input_stride_in_bytes,
output_data, output_stride_in_bytes,
alpha_channel, flags, type,
edge_horizontal, edge_vertical,
colorspace, extra_memory, memory_required);
STBIR_FREE(context, extra_memory);
return result;
}
#if 0
STBIRDEF int stbir_resize_arbitrary(const void* input_data, int input_w, int input_h, int input_stride_in_bytes,
void* output_data, int output_w, int output_h, int output_stride_in_bytes,
float s0, float t0, float s1, float t1,
int channels, int alpha_channel, stbir_uint32 flags, stbir_datatype type,
stbir_filter filter, stbir_edge edge_horizontal, stbir_edge edge_vertical, stbir_colorspace colorspace)
{
return stbir_resize_arbitrary2(NULL, input_data, input_w, input_h, input_stride_in_bytes,
output_data, output_w, output_h, output_stride_in_bytes,
s0,t0,s1,t1,NULL, channels, alpha_channel, flags, type,
filter,filter, edge_horizontal,edge_vertical, colorspace);
}
STBIRDEF int stbir_resize_uint16_srgb(const stbir_uint16* input_data, int input_w, int input_h,
stbir_uint16* output_data, int output_w, int output_h,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, 0, 0, STBIR_TYPE_UINT16, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_uint32_srgb(const stbir_uint32* input_data, int input_w, int input_h,
stbir_uint32* output_data, int output_w, int output_h,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, 0, 0, STBIR_TYPE_UINT32, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_float_srgb(const float* input_data, int input_w, int input_h,
float* output_data, int output_w, int output_h,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, 0, 0, STBIR_TYPE_FLOAT, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_uint8_alphaweighted(const stbir_uint8* input_data, int input_w, int input_h,
stbir_uint8* output_data, int output_w, int output_h,
int channels, int alpha_channel, stbir_filter filter, stbir_edge edge, stbir_colorspace colorspace)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, alpha_channel, STBIR_FLAG_NONPREMUL_ALPHA, STBIR_TYPE_UINT8, filter, edge, edge, colorspace);
}
STBIRDEF int stbir_resize_uint16_alphaweighted(const stbir_uint16* input_data, int input_w, int input_h,
stbir_uint16* output_data, int output_w, int output_h,
int channels, int alpha_channel, stbir_filter filter, stbir_edge edge, stbir_colorspace colorspace)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, alpha_channel, STBIR_FLAG_NONPREMUL_ALPHA, STBIR_TYPE_UINT16, filter, edge, edge, colorspace);
}
STBIRDEF int stbir_resize_uint32_alphaweighted(const stbir_uint32* input_data, int input_w, int input_h,
stbir_uint32* output_data, int output_w, int output_h,
int channels, int alpha_channel, stbir_filter filter, stbir_edge edge, stbir_colorspace colorspace)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, alpha_channel, STBIR_FLAG_NONPREMUL_ALPHA, STBIR_TYPE_UINT32, filter, edge, edge, colorspace);
}
STBIRDEF int stbir_resize_float_alphaweighted(const float* input_data, int input_w, int input_h,
float* output_data, int output_w, int output_h,
int channels, int alpha_channel, stbir_filter filter, stbir_edge edge, stbir_colorspace colorspace)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, 0, 0, 1, 1, channels, alpha_channel, STBIR_FLAG_NONPREMUL_ALPHA, STBIR_TYPE_FLOAT, filter, edge, edge, colorspace);
}
STBIRDEF int stbir_resize_uint8_subpixel(const stbir_uint8* input_data, int input_w, int input_h,
stbir_uint8* output_data, int output_w, int output_h,
float s0, float t0, float s1, float t1,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, s0, t0, s1, t1, channels, 0, 0, STBIR_TYPE_UINT8, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_uint16_subpixel(const stbir_uint16* input_data, int input_w, int input_h,
stbir_uint16* output_data, int output_w, int output_h,
float s0, float t0, float s1, float t1,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, s0, t0, s1, t1, channels, 0, 0, STBIR_TYPE_UINT16, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_uint32_subpixel(const stbir_uint32* input_data, int input_w, int input_h,
stbir_uint32* output_data, int output_w, int output_h,
float s0, float t0, float s1, float t1,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, s0, t0, s1, t1, channels, 0, 0, STBIR_TYPE_UINT32, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
STBIRDEF int stbir_resize_float_subpixel(const float* input_data, int input_w, int input_h,
float* output_data, int output_w, int output_h,
float s0, float t0, float s1, float t1,
int channels, stbir_filter filter, stbir_edge edge)
{
return stbir_resize_arbitrary(input_data, input_w, input_h, 0, output_data, output_w, output_h, 0, s0, t0, s1, t1, channels, 0, 0, STBIR_TYPE_FLOAT, filter, edge, edge, STBIR_COLORSPACE_SRGB);
}
#endif
STBIRDEF int stbir_resize_uint8( const unsigned char *input_pixels , int input_w , int input_h , int input_stride_in_bytes,
unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes,
int num_channels)
{
return stbir_resize_arbitrary2(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,-1,0, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT,
STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR);
@ -1799,7 +1734,7 @@ STBIRDEF int stbir_resize_float( const float *input_pixels , int input_w , i
float *output_pixels, int output_w, int output_h, int output_stride_in_bytes,
int num_channels)
{
return stbir_resize_arbitrary2(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,-1,0, STBIR_TYPE_FLOAT, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT,
STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_LINEAR);
@ -1809,7 +1744,7 @@ STBIRDEF int stbir_resize_uint8_srgb(const unsigned char *input_pixels , int inp
unsigned char *output_pixels, int output_w, int output_h, int output_stride_in_bytes,
int num_channels, int alpha_channel, int flags)
{
return stbir_resize_arbitrary2(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT,
STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
@ -1820,7 +1755,7 @@ STBIRDEF int stbir_resize_uint8_srgb_edgemode(const unsigned char *input_pixels
int num_channels, int alpha_channel, int flags,
stbir_edge edge_wrap_mode)
{
return stbir_resize_arbitrary2(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(NULL, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, STBIR_FILTER_DEFAULT, STBIR_FILTER_DEFAULT,
edge_wrap_mode, edge_wrap_mode, STBIR_COLORSPACE_SRGB);
@ -1832,7 +1767,7 @@ STBIRDEF int stbir_resize_uint8_generic( const unsigned char *input_pixels , int
stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space,
void *alloc_context)
{
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT8, filter, filter,
edge_wrap_mode, edge_wrap_mode, space);
@ -1844,7 +1779,7 @@ STBIRDEF int stbir_resize_uint16_generic(const stbir_uint16 *input_pixels , int
stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space,
void *alloc_context)
{
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_UINT16, filter, filter,
edge_wrap_mode, edge_wrap_mode, space);
@ -1857,7 +1792,7 @@ STBIRDEF int stbir_resize_float_generic( const float *input_pixels , int
stbir_edge edge_wrap_mode, stbir_filter filter, stbir_colorspace space,
void *alloc_context)
{
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, STBIR_TYPE_FLOAT, filter, filter,
edge_wrap_mode, edge_wrap_mode, space);
@ -1872,7 +1807,7 @@ STBIRDEF int stbir_resize( const void *input_pixels , int input_w , int
stbir_filter filter_horizontal, stbir_filter filter_vertical,
stbir_colorspace space, void *alloc_context)
{
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,NULL,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical,
edge_mode_horizontal, edge_mode_vertical, space);
@ -1886,15 +1821,15 @@ STBIRDEF int stbir_resize_subpixel(const void *input_pixels , int input_w , int
stbir_edge edge_mode_horizontal, stbir_edge edge_mode_vertical,
stbir_filter filter_horizontal, stbir_filter filter_vertical,
stbir_colorspace space, void *alloc_context,
float x_scale, float x_offset,
float y_scale, float y_offset)
float x_scale, float y_scale,
float x_offset, float y_offset)
{
float transform[4];
transform[0] = x_scale;
transform[1] = y_scale;
transform[2] = x_offset;
transform[3] = y_offset;
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
0,0,1,1,transform,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical,
edge_mode_horizontal, edge_mode_vertical, space);
@ -1909,16 +1844,10 @@ STBIRDEF int stbir_resize_region( const void *input_pixels , int input_w , int
stbir_colorspace space, void *alloc_context,
float s0, float t0, float s1, float t1)
{
return stbir_resize_arbitrary2(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
return stbir_resize_arbitrary(alloc_context, input_pixels, input_w, input_h, input_stride_in_bytes,
output_pixels, output_w, output_h, output_stride_in_bytes,
s0,t0,s1,t1,NULL,num_channels,alpha_channel,flags, datatype, filter_horizontal, filter_vertical,
edge_mode_horizontal, edge_mode_vertical, space);
}
#endif // STB_IMAGE_RESIZE_IMPLEMENTATION
/*
revision history:
0.50 (2014-07-29)
first released version
*/

39
tests/resample_test.cpp
Unescape View File

@ -129,7 +129,7 @@ int main(int argc, char** argv)
{
ftime(&initial_time_millis);
for (int i = 0; i < 100; i++)
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);
stbir_resize_arbitrary(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);
ftime(&final_time_millis);
long lapsed_ms = (long)(final_time_millis.time - initial_time_millis.time) * 1000 + (final_time_millis.millitm - initial_time_millis.millitm);
printf("Resample: %dms\n", lapsed_ms);
@ -141,7 +141,7 @@ int main(int argc, char** argv)
printf("Average: %dms\n", average);
#else
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);
stbir_resize_arbitrary(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);
#endif
stbi_image_free(input_data);
@ -169,7 +169,7 @@ void resize_image(const char* filename, float width_percent, float height_percen
unsigned char* output_data = (unsigned char*)malloc(out_w * out_h * n);
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);
stbir_resize_arbitrary(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);
stbi_image_free(input_data);
@ -204,7 +204,7 @@ void test_format(const char* file, float width_percent, float height_percent, st
T* output_data = (T*)malloc(new_w * new_h * n * sizeof(T));
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);
stbir_resize_arbitrary(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);
free(T_data);
stbi_image_free(input_data);
@ -248,7 +248,7 @@ void test_float(const char* file, float width_percent, float height_percent, stb
float* output_data = (float*)malloc(new_w * new_h * n * sizeof(float));
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);
stbir_resize_arbitrary(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);
free(T_data);
stbi_image_free(input_data);
@ -288,7 +288,7 @@ void test_channels(const char* file, float width_percent, float height_percent,
unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * channels * sizeof(unsigned char));
stbir_resize_uint8_srgb(channels_data, w, h, 0, output_data, new_w, new_h, 0, channels);
stbir_resize_uint8_srgb(channels_data, w, h, 0, output_data, new_w, new_h, 0, channels, -1,0);
free(channels_data);
stbi_image_free(input_data);
@ -316,7 +316,7 @@ void test_subpixel(const char* file, float width_percent, float height_percent,
unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(unsigned char));
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);
stbir_resize_arbitrary(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);
stbi_image_free(input_data);
@ -351,13 +351,13 @@ void test_premul(const char* file)
unsigned char* output_data = (unsigned char*)malloc(new_w * new_h * n * sizeof(unsigned char));
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);
stbir_resize_arbitrary(NULL, input_data, w, h, 0, output_data, new_w, new_h, 0, 0, 0, 1, 1, NULL, n, 3, 0, STBIR_TYPE_UINT8, STBIR_FILTER_CATMULLROM, STBIR_FILTER_CATMULLROM, STBIR_EDGE_CLAMP, STBIR_EDGE_CLAMP, STBIR_COLORSPACE_SRGB);
char output[200];
sprintf(output, "test-output/premul-%s", file);
stbi_write_png(output, new_w, new_h, n, output_data, 0);
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);
stbir_resize_arbitrary(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);
sprintf(output, "test-output/nopremul-%s", file);
stbi_write_png(output, new_w, new_h, n, output_data, 0);
@ -379,13 +379,13 @@ void test_subpixel_1()
unsigned char output_data[16 * 16];
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);
stbir_resize_arbitrary(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);
unsigned char output_left[8 * 16];
unsigned char output_right[8 * 16];
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);
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);
stbir_resize_arbitrary(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);
stbir_resize_arbitrary(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);
for (int x = 0; x < 8; x++)
{
@ -424,8 +424,8 @@ void test_subpixel_2()
unsigned char output_data_1[16 * 16];
unsigned char output_data_2[16 * 16];
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);
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);
stbir_resize_arbitrary(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);
stbir_resize_arbitrary(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);
{for (int x = 0; x < 16; x++)
{
@ -469,7 +469,7 @@ void test_subpixel_4()
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_resize_arbitrary(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);
}
@ -477,6 +477,15 @@ void test_suite()
{
int i;
#if 0 // linear_to_srgb_uchar table
for (i=0; i < 256; ++i) {
float f = stbir__srgb_to_linear((i+0.5f)/256.0f);
printf("%9d, ", (int) ((f) * (1<<28)));
if ((i & 7) == 7)
printf("\n");
}
#endif
test_subpixel_1();
test_subpixel_2();
test_subpixel_3();

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