1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
#include <iostream>
#include <limits>
#include "HalideBuffer.h"
#include "halide_benchmark.h"
#include "halide_image_io.h"
#include "resize_box_float32_down.h"
#include "resize_box_float32_up.h"
#include "resize_box_uint16_down.h"
#include "resize_box_uint16_up.h"
#include "resize_box_uint8_down.h"
#include "resize_box_uint8_up.h"
#include "resize_cubic_float32_down.h"
#include "resize_cubic_float32_up.h"
#include "resize_cubic_uint16_down.h"
#include "resize_cubic_uint16_up.h"
#include "resize_cubic_uint8_down.h"
#include "resize_cubic_uint8_up.h"
#include "resize_lanczos_float32_down.h"
#include "resize_lanczos_float32_up.h"
#include "resize_lanczos_uint16_down.h"
#include "resize_lanczos_uint16_up.h"
#include "resize_lanczos_uint8_down.h"
#include "resize_lanczos_uint8_up.h"
#include "resize_linear_float32_down.h"
#include "resize_linear_float32_up.h"
#include "resize_linear_uint16_down.h"
#include "resize_linear_uint16_up.h"
#include "resize_linear_uint8_down.h"
#include "resize_linear_uint8_up.h"
std::string infile, outfile, input_type, interpolation_type;
float scale_factor = 1.0f;
int benchmark_iters = 10;
bool packed = true;
void show_usage_and_exit() {
fprintf(stderr,
"Usage:\n"
"\t./resample [-f scalefactor] "
"[-b benchmark_iterations] "
"[-i box|linear|cubic|lanczos] "
"[-t float32|uint8|uint16] in.png out.png\n");
exit(1);
}
void parse_commandline(int argc, char **argv) {
for (int i = 1; i < argc; i++) {
std::string arg = argv[i];
if (arg == "-f" && i + 1 < argc) {
scale_factor = atof(argv[++i]);
} else if (arg == "-i" && i + 1 < argc) {
interpolation_type = argv[++i];
} else if (arg == "-t" && i + 1 < argc) {
input_type = argv[++i];
} else if (arg == "-b" && i + 1 < argc) {
benchmark_iters = atoi(argv[++i]);
} else if (arg == "-p" && i + 1 < argc) {
packed = atoi(argv[++i]) != 0;
} else if (infile.empty()) {
infile = arg;
} else if (outfile.empty()) {
outfile = arg;
} else {
fprintf(stderr, "Unexpected command line option '%s'.\n", arg.c_str());
show_usage_and_exit();
}
}
if (infile.empty() || outfile.empty() || interpolation_type.empty()) {
show_usage_and_exit();
}
}
int main(int argc, char **argv) {
parse_commandline(argc, argv);
Halide::Runtime::Buffer<> in = Halide::Tools::load_image(infile);
int out_width = in.width() * scale_factor;
int out_height = in.height() * scale_factor;
decltype(&resize_box_float32_up) variants[3][2][4] =
{
{{&resize_box_float32_up,
&resize_cubic_float32_up,
&resize_linear_float32_up,
&resize_lanczos_float32_up},
{&resize_box_float32_down,
&resize_cubic_float32_down,
&resize_linear_float32_down,
&resize_lanczos_float32_down}},
{{&resize_box_uint8_up,
&resize_cubic_uint8_up,
&resize_linear_uint8_up,
&resize_lanczos_uint8_up},
{&resize_box_uint8_down,
&resize_cubic_uint8_down,
&resize_linear_uint8_down,
&resize_lanczos_uint8_down}},
{{&resize_box_uint16_up,
&resize_cubic_uint16_up,
&resize_linear_uint16_up,
&resize_lanczos_uint16_up},
{&resize_box_uint16_down,
&resize_cubic_uint16_down,
&resize_linear_uint16_down,
&resize_lanczos_uint16_down}}};
int interpolation_idx = 0;
if (interpolation_type == "box") {
interpolation_idx = 0;
} else if (interpolation_type == "cubic") {
interpolation_idx = 1;
} else if (interpolation_type == "linear") {
interpolation_idx = 2;
} else if (interpolation_type == "lanczos") {
interpolation_idx = 3;
} else {
fprintf(stderr, "Unknown interpolation type: %s\n", interpolation_type.c_str());
show_usage_and_exit();
}
int upsample_idx = scale_factor > 1.0f ? 0 : 1;
// Instead of just adapting to the actual type of the input, we'll
// convert it to the requested type to make it easier to benchmark
// lots of different types.
int type_idx = 0;
if (input_type == "float32") {
in = Halide::Tools::ImageTypeConversion::convert_image(in, halide_type_of<float>());
type_idx = 0;
} else if (input_type == "uint8") {
in = Halide::Tools::ImageTypeConversion::convert_image(in, halide_type_of<uint8_t>());
type_idx = 1;
} else if (input_type == "uint16") {
in = Halide::Tools::ImageTypeConversion::convert_image(in, halide_type_of<uint16_t>());
type_idx = 2;
} else {
fprintf(stderr, "Unhandled type: %s\n", input_type.c_str());
show_usage_and_exit();
}
Halide::Runtime::Buffer<> out(in.type(), out_width, out_height, 3);
auto resize_fn = variants[type_idx][upsample_idx][interpolation_idx];
double time = Halide::Tools::benchmark(benchmark_iters, benchmark_iters, [&]() { resize_fn(in, scale_factor, out); });
printf("planar %8s %8s %1.2f time: %f ms\n",
interpolation_type.c_str(), input_type.c_str(), scale_factor, time * 1000);
Halide::Tools::convert_and_save_image(out, outfile);
if (packed) {
// Also benchmark a packed memory layout. Don't bother to copy the
// actual data over, because we won't save the result. We just
// want to measure the runtime.
auto in_packed =
Halide::Runtime::Buffer<>::make_interleaved(in.type(), in.width(), in.height(), in.channels());
auto out_packed =
Halide::Runtime::Buffer<>::make_interleaved(out.type(), out.width(), out.height(), out.channels());
time = Halide::Tools::benchmark(benchmark_iters, benchmark_iters, [&]() { resize_fn(in_packed, scale_factor, out_packed); });
printf("packed %8s %8s %1.2f time: %f ms\n",
interpolation_type.c_str(), input_type.c_str(), scale_factor, time * 1000);
}
printf("Success!\n");
return 0;
}
|
