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Start factoring out protocol buffer handling code

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Eric Fischer
2016-04-22 12:00:19 -07:00
parent 2607a76c63
commit b91e8f6d3e
6 changed files with 84 additions and 135 deletions
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tile.cc
+1 -28
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@@ -18,6 +18,7 @@
#include <sqlite3.h>
#include <pthread.h>
#include <errno.h>
#include "protobuf.hh"
#include "vector_tile.pb.h"
#include "geometry.hh"
@@ -37,34 +38,6 @@ extern "C" {
pthread_mutex_t db_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t var_lock = PTHREAD_MUTEX_INITIALIZER;
// https://github.com/mapbox/mapnik-vector-tile/blob/master/src/vector_tile_compression.hpp
static inline int compress(std::string const &input, std::string &output) {
z_stream deflate_s;
deflate_s.zalloc = Z_NULL;
deflate_s.zfree = Z_NULL;
deflate_s.opaque = Z_NULL;
deflate_s.avail_in = 0;
deflate_s.next_in = Z_NULL;
deflateInit2(&deflate_s, Z_BEST_COMPRESSION, Z_DEFLATED, 31, 8, Z_DEFAULT_STRATEGY);
deflate_s.next_in = (Bytef *) input.data();
deflate_s.avail_in = input.size();
size_t length = 0;
do {
size_t increase = input.size() / 2 + 1024;
output.resize(length + increase);
deflate_s.avail_out = increase;
deflate_s.next_out = (Bytef *) (output.data() + length);
int ret = deflate(&deflate_s, Z_FINISH);
if (ret != Z_STREAM_END && ret != Z_OK && ret != Z_BUF_ERROR) {
return -1;
}
length += (increase - deflate_s.avail_out);
} while (deflate_s.avail_out == 0);
deflateEnd(&deflate_s);
output.resize(length);
return 0;
}
int to_feature(drawvec &geom, mapnik::vector::tile_feature *feature) {
int px = 0, py = 0;
int cmd_idx = -1;