static void append(pak_file_t* pak, const char* fname)
{
assert(pak);
assert(fname);
LOGD("debug fname=%s", fname);
if(pak_file_writek(pak, fname) == 0)
{
return;
}
FILE* f = fopen(fname, "r");
if(f == 0)
{
LOGE("fopen %s failed", fname);
return;
}
unsigned char buf[4096];
int bytes = fread(buf, sizeof(unsigned char), 4096, f);
while(bytes > 0)
{
if(pak_file_write(pak, buf, bytes, 1) != 1)
{
break;
}
bytes = fread(buf, sizeof(unsigned char), 4096, f);
}
fclose(f);
}
static void sample_subtile(texgz_tex_t* src,
pak_file_t* pak,
int x, int y,
int i, int j,
double latT, double lonL,
double latB, double lonR)
{
assert(src);
assert(pak);
LOGD("debug x=%i, y=%i, i=%i, j=%i, latT=%lf, lonL=%lf, latB=%lf, lonR=%lf",
x, y, i, j, latT, lonL, latB, lonR);
// create dst
texgz_tex_t* dst = texgz_tex_new(SUBTILE_SIZE, SUBTILE_SIZE,
SUBTILE_SIZE, SUBTILE_SIZE,
TEXGZ_UNSIGNED_BYTE,
TEXGZ_RGB, NULL);
if(dst == NULL)
{
return;
}
int m;
int n;
for(m = 0; m < SUBTILE_SIZE; ++m)
{
for(n = 0; n < SUBTILE_SIZE; ++n)
{
sample_data(src, dst, x, y, i, j, m, n, latT, lonL, latB, lonR);
}
}
// convert dst to 565
texgz_tex_convert(dst, TEXGZ_UNSIGNED_SHORT_5_6_5, TEXGZ_RGB);
char key[256];
snprintf(key, 256, "%i_%i", j, i);
pak_file_writek(pak, key);
texgz_tex_exportf(dst, pak->f);
texgz_tex_delete(&dst);
}
static int sample_subtile(nedgz_tile_t* tile, int i, int j,
pak_file_t* pak)
{
assert(tile);
LOGD("debug i=%i, j=%i", i, j);
texgz_tex_t* tex = texgz_tex_new(SUBTILE_SIZE,
SUBTILE_SIZE,
SUBTILE_SIZE,
SUBTILE_SIZE,
TEXGZ_SHORT,
TEXGZ_LUMINANCE,
NULL);
if(tex == NULL)
{
return 0;
}
int m;
int n;
for(m = 0; m < SUBTILE_SIZE; ++m)
{
for(n = 0; n < SUBTILE_SIZE; ++n)
{
double lat;
double lon;
tile_coord(tile, i, j, m, n, &lat, &lon);
// flt_cc most likely place to find sample
// At edges of range a subtile may not be
// fully covered by flt_xx
short height;
if((flt_cc && flt_tile_sample(flt_cc, lat, lon, &height)) ||
(flt_tc && flt_tile_sample(flt_tc, lat, lon, &height)) ||
(flt_bc && flt_tile_sample(flt_bc, lat, lon, &height)) ||
(flt_cl && flt_tile_sample(flt_cl, lat, lon, &height)) ||
(flt_cr && flt_tile_sample(flt_cr, lat, lon, &height)) ||
(flt_tl && flt_tile_sample(flt_tl, lat, lon, &height)) ||
(flt_bl && flt_tile_sample(flt_bl, lat, lon, &height)) ||
(flt_tr && flt_tile_sample(flt_tr, lat, lon, &height)) ||
(flt_br && flt_tile_sample(flt_br, lat, lon, &height)))
{
short* pixels = (short*) tex->pixels;
pixels[m*SUBTILE_SIZE + n] = height;
}
else
{
short* pixels = (short*) tex->pixels;
pixels[m*SUBTILE_SIZE + n] = NEDGZ_NODATA;
}
}
}
// j=dx, i=dy
char fname[256];
snprintf(fname, 256, "%i_%i", j, i);
pak_file_writek(pak, fname);
texgz_tex_exportf(tex, pak->f);
texgz_tex_delete(&tex);
return 1;
}
int main(int argc, char** argv)
{
// osm.list
// zoom x y
if(argc != 2)
{
LOGE("usage: %s [osm.list]", argv[0]);
return EXIT_FAILURE;
}
// create directories if necessary
char dname[256];
snprintf(dname, 256, "%s", "osm");
if(mkdir(dname, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == -1)
{
if(errno == EEXIST)
{
// already exists
}
else
{
LOGE("mkdir %s failed", dname);
return EXIT_FAILURE;
}
}
// open the list
FILE* f = fopen(argv[1], "r");
if(f == NULL)
{
LOGE("failed to open %s", argv[1]);
return EXIT_FAILURE;
}
// iteratively pak osm images
char* line = NULL;
size_t n = 0;
int index = 0;
while(getline(&line, &n, f) > 0)
{
int x;
int y;
int zoom;
if(sscanf(line, "%i %i %i", &zoom, &x, &y) != 3)
{
LOGE("invalid line=%s", line);
continue;
}
LOGI("%i: zoom=%i, x=%i, y=%i", index++, zoom, x, y);
// create directories if necessary
char dname[256];
snprintf(dname, 256, "osm/%i", zoom);
if(mkdir(dname, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == -1)
{
if(errno == EEXIST)
{
// already exists
}
else
{
LOGE("mkdir %s failed", dname);
continue;
}
}
char fname[256];
snprintf(fname, 256, "osm/%i/%i_%i.pak", zoom, x, y);
pak_file_t* pak = pak_file_open(fname, PAK_FLAG_WRITE);
if(pak == NULL)
{
continue;
}
int i;
int j;
for(i = 0; i < 8; ++i)
{
for(j = 0; j < 8; ++j)
{
int xj = 8*x + j;
int yi = 8*y + i;
snprintf(fname, 256, "localhost/osm/%i/%i/%i.png", zoom, xj, yi);
texgz_tex_t* tex = texgz_png_import(fname);
if(tex == NULL)
{
continue;
}
if(texgz_tex_convert(tex,
TEXGZ_UNSIGNED_SHORT_4_4_4_4,
TEXGZ_RGBA) == 0)
{
texgz_tex_delete(&tex);
continue;
}
// j=dx, i=dy
snprintf(fname, 256, "%i_%i", j, i);
pak_file_writek(pak, fname);
texgz_tex_exportf(tex, pak->f);
texgz_tex_delete(&tex);
}
}
pak_file_close(&pak);
}
free(line);
return EXIT_SUCCESS;
}
