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// This header defines several methods useful for debugging programs that
// operate on the Image class supporting images with arbitrary dimensions.
//
// Image<uint16_t> input = load_image(argv[1]);
//
// info(input, "input"); // Output the Image header info
// dump(input, "input"); // Dump the Image data
// stats(input, "input"); // Report statistics for the Image
//
//
#ifndef HALIDE_TOOLS_IMAGE_INFO_H
#define HALIDE_TOOLS_IMAGE_INFO_H
#include <cassert>
#include <cstdlib>
#include <limits>
#include <memory>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <stdint.h>
#include "halide_buffer.h"
namespace Halide {
namespace Tools {
static inline void print_dimid(int d, int val) {
static const char *dimid[] = {"x", "y", "z", "w"};
int numdimid = 4;
if (d < numdimid) {
std::cout << " " << dimid[d] << ":" << val;
} else {
std::cout << " extent[" << d << "]:" << val;
}
}
static inline void print_loc(int32_t *loc, int dim, int32_t *min) {
for (int d = 0; d < dim; d++) {
if (d) {
std::cout << ",";
}
std::cout << loc[d] + min[d];
}
}
static inline void print_memalign(intptr_t val) {
intptr_t align_chk = 1024*1024;
while (align_chk > 0) {
if ((val & (align_chk-1)) == 0) {
char aunit = ' ';
if (align_chk >= 1024) {
align_chk >>= 10;
aunit = 'K';
}
if (align_chk >= 1024) {
align_chk >>= 10;
aunit = 'M';
}
std::cout << "align:" << align_chk;
if (aunit != ' ') {
std::cout << aunit;
}
break;
}
align_chk >>= 1;
}
}
template<typename T>
void info(Image<T> &img, const char *tag = "Image") {
buffer_t *buf = &(*img);
int32_t *min = buf->min;
int32_t *extent = buf->extent;
int32_t *stride = buf->stride;
int dim = img.dimensions();
int img_bpp = buf->elem_size;
int img_tsize = sizeof(T);
int img_csize = sizeof(Image<T>);
int img_bsize = sizeof(buffer_t);
int32_t size = 1;
uint64_t dev = buf->dev;
bool host_dirty = buf->host_dirty;
bool dev_dirty = buf->dev_dirty;
std::cout << std::endl
<< "-----------------------------------------------------------------------------";
std::cout << std::endl << "Image info: " << tag
<< " dim:" << dim << " bpp:" << img_bpp;
for (int d = 0; d < dim; d++) {
print_dimid(d, extent[d]);
size *= extent[d];
}
std::cout << std::endl;
std::cout << tag << " class = 0x" << std::left << std::setw(10) << (void*)img
<< std::right << " # ";
print_memalign((intptr_t)&img); std::cout << std::endl;
std::cout << tag << " class size = "<< img_csize
<< " (0x"<< std::hex << img_csize << std::dec <<")\n";
std::cout << tag << "-class => [ 0x" << (void*)&img
<< ", 0x" << (void*)(((char*)&img)+img_csize-1)
<< " ], # size:" << img_csize << ", ";
print_memalign((intptr_t)&img); std::cout << std::endl;
std::cout << tag << " buf_t size = "<< img_bsize
<< " (0x"<< std::hex << img_bsize << std::dec <<")\n";
std::cout << tag << "-buf_t => [ 0x" << (void*)&buf
<< ", 0x" << (void*)(((char*)&buf)+img_bsize-1)
<< " ], # size:" << img_bsize << ", ";
print_memalign((intptr_t)&buf); std::cout << std::endl;
if (img_bpp != img_tsize) {
std::cout << tag << " sizeof(T) = " << img_tsize << std::endl;
}
std::cout << tag << " host_dirty = " << host_dirty << std::endl;
std::cout << tag << " dev_dirty = " << dev_dirty << std::endl;
std::cout << tag << " dev handle = " << dev << std::endl;
std::cout << tag << " elem_size = " << img_bpp << std::endl;
std::cout << tag << " img_dim = " << dim << std::endl;
std::cout << tag << " width = " << img.width() << std::endl;
std::cout << tag << " height = " << img.height() << std::endl;
std::cout << tag << " channels = " << img.channels() << std::endl;
std::cout << tag << " extent[] = ";
for (int d = 0; d < dim; d++) {
std::cout << extent[d] << " ";
}
std::cout << std::endl;
std::cout << tag << " min[] = ";
for (int d = 0; d < dim; d++) {
std::cout << min[d] << " ";
}
std::cout << std::endl;
std::cout << tag << " stride[] = ";
for (int d = 0; d < dim; d++) {
std::cout << stride[d] << " ";
}
std::cout << std::endl;
if (img_bpp > 1) {
for (int d = 0; d < dim; d++) {
std::cout << tag << " str[" << d << "]*bpp = "
<< std::left << std::setw(12) << stride[d] * img_bpp
<< std::right << " # ";
print_memalign(stride[d] * img_bpp); std::cout << std::endl;
}
}
const T *img_data = img.data();
const T *img_next = img_data + size;
int32_t img_size = size * img_bpp;
int32_t data_size = (char*)img_next - (char*)img_data;
std::cout << tag << " size = " << size << " (0x"
<< std::hex << size << ")" << std::dec << std::endl;
std::cout << tag << " img_size = " << img_size << " (0x"
<< std::hex << img_size << ")" << std::dec << std::endl;
std::cout << tag << " data = 0x" << std::left << std::setw(10) << (void *)img_data
<< std::right << " # ";
print_memalign((intptr_t)img_data); std::cout << std::endl;
std::cout << tag << " next = 0x" << std::left << std::setw(10) << (void *)img_next
<< std::right << " # ";
print_memalign((intptr_t)img_next); std::cout << std::endl;
std::cout << tag << " data_size = " << data_size << " (0x"
<< std::hex << data_size << ")" << std::dec << std::endl;
std::cout << tag << " => [ 0x" << (void *)img_data
<< ", 0x" << (void *)(((char*)img_next)-1)
<< "], # size:" << data_size << ", ";
print_memalign((intptr_t)img_data); std::cout << std::endl;
}
template<typename T>
void dump(Image<T> &img, const char *tag = "Image") {
buffer_t *buf = &(*img);
int32_t *min = buf->min;
int32_t *extent = buf->extent;
int32_t *stride = buf->stride;
int dim = img.dimensions();
int bpp = buf->elem_size;
int32_t size = 1;
std::cout << std::endl << "Image dump: " << tag
<< " dim:" << dim << " bpp:" << bpp;
for (int d = 0; d < dim; d++) {
print_dimid(d, extent[d]);
size *= extent[d];
}
// Arbitrary dimension image traversal
const T *ptr = img.data();
int32_t curloc[dim];
for (int d = 1; d < dim; d++) {
curloc[d] = -1;
}
curloc[0] = 0;
for (int32_t i = 0; i < size; i++) {
// Track changes in position in higher dimensions
for (int d = 1; d < dim; d++) {
if ((i % stride[d]) == 0) {
curloc[d]++;
for (int din = 0; din < d; din++) {
curloc[din] = 0;
}
std::cout << std::endl;
// Print separators for dimensions beyond (x0,y1)
if (d > 1) {
print_dimid(d, curloc[d]+min[d]);
std::cout << "\n==========================================";
}
}
}
// Check for start of row (or wrap due to width)
if ((curloc[0] % 16) == 0) {
int widx = 0;
std::ostringstream idx;
if (dim > 1) { // Multi-dim, just report (x0,y1) on each row
idx << "(" << curloc[0]+min[0] << "," << curloc[1]+min[1] << ")";
widx = 12;
} else { // Single-dim
idx << curloc[0]+min[0];
widx = 4;
}
std::cout << std::endl << std::setw(widx) << idx.str() << ": ";
}
// Display data
std::cout << std::setw(4) << *ptr++ + 0 << " ";
curloc[0]++; // Track position in row
}
std::cout << std::endl;
}
template<typename T>
void stats(Image<T> &img, const char *tag = "Image") {
buffer_t *buf = &(*img);
int32_t *min = buf->min;
int32_t *extent = buf->extent;
int32_t *stride = buf->stride;
int dim = img.dimensions();
int bpp = buf->elem_size;
int32_t size = 1;
std::cout << std::endl << "Image stats: " << tag
<< " dim:" << dim << " bpp:" << bpp;
for (int d = 0; d < dim; d++) {
print_dimid(d, extent[d]);
size *= extent[d];
}
// Arbitrary dimension image traversal
const T *ptr = img.data();
int32_t curloc[dim];
for (int d = 1; d < dim; d++) {
curloc[d] = -1;
}
curloc[0] = 0;
// Statistics
int32_t cnt = 0;
double sum = 0;
T minval = *ptr;
T maxval = *ptr;
int32_t minloc[dim];
int32_t maxloc[dim];
for (int d = 0; d < dim; d++) {
minloc[d] = 0;
maxloc[d] = 0;
}
for (int32_t i = 0; i < size; i++) {
// Track changes in position in higher dimensions
for (int d = 1; d < dim; d++) {
if ((i % stride[d]) == 0) {
curloc[d]++;
for (int din = 0; din < d; din++) {
curloc[din] = 0;
}
}
}
// Collect data
T val = *ptr++;
sum += val;
cnt++;
if (val < minval) {
minval = val;
for (int d = 0; d < dim; d++) {
minloc[d] = curloc[d];
}
}
if (val > maxval) {
maxval = val;
for (int d = 0; d < dim; d++) {
maxloc[d] = curloc[d];
}
}
curloc[0]++; // Track position in row
}
double avg = sum / cnt;
std::cout << std::endl;
std::cout << "min = " << minval + 0 << " @ (";
print_loc(minloc, dim, min);
std::cout << ")" << std::endl;
std::cout << "max = " << maxval + 0 << " @ (";
print_loc(maxloc, dim, min);
std::cout << ")" << std::endl;
std::cout << "mean = " << avg << std::endl;
std::cout << "N = " << cnt << std::endl;
std::cout << std::endl;
}
} // namespace Tools
} // namespace Halide
#endif // HALIDE_TOOLS_IMAGE_INFO_H
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