Add compress_j2k method and simple benchmark.

2 files changed, 92 insertions, 0 deletions

diff --git a/test/bench.cc b/test/bench.cc
new file mode 100644
index 00000000..c3f7dd1e
--- /dev/null
+++ b/test/bench.cc
@@ -0,0 +1,84 @@
+/*
+    Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "data.h"
+#include "test.h"
+#include "util.h"
+#include "version.h"
+#include <sys/time.h>
+#include <iostream>
+
+using std::cout;
+using std::cerr;
+using boost::shared_ptr;
+
+/** Run some basic benchmarks of JPEG2000 encoding / decoding */
+int
+main (int argc, char* argv[])
+{
+	if (argc < 2) {
+		cerr << "Syntax: " << argv[0] << " private-test-path\n";
+		exit (EXIT_FAILURE);
+	}
+
+	int const decompress_count = 100;
+	int const compress_count = 100;
+	int const j2k_bandwidth = 100000000;
+
+	struct timeval start;
+	dcp::Data j2k (boost::filesystem::path (argv[1]) / "thx.j2c");
+
+	gettimeofday (&start, 0);
+
+	shared_ptr<dcp::OpenJPEGImage> xyz;
+	for (int i = 0; i < decompress_count; ++i) {
+		xyz = dcp::decompress_j2k (j2k.data.get(), j2k.size, 0);
+	}
+
+	struct timeval stop;
+	gettimeofday (&stop, 0);
+
+	double start_seconds = start.tv_sec + double(start.tv_usec) / 1000000;
+	double stop_seconds = stop.tv_sec + double(start.tv_usec) / 1000000;
+	if (dcp::built_with_debug) {
+		cout << "Decompress (debug build): ";
+	} else {
+		cout << "Decompress: ";
+	}
+	cout << decompress_count / (stop_seconds - start_seconds) << " fps.\n";
+
+	gettimeofday (&start, 0);
+
+	for (int i = 0; i < compress_count; ++i) {
+		dcp::compress_j2k (xyz, j2k_bandwidth, 24, false, false);
+	}
+
+	gettimeofday (&stop, 0);
+
+	start_seconds = start.tv_sec + double(start.tv_usec) / 1000000;
+	stop_seconds = stop.tv_sec + double(start.tv_usec) / 1000000;
+	if (dcp::built_with_debug) {
+		cout << "Compress (debug build) ";
+	} else {
+		cout << "Compress ";
+	}
+
+	cout << (j2k_bandwidth / 1000000) << "Mbps: "
+	     << compress_count / (stop_seconds - start_seconds) << " fps.";
+}
diff --git a/test/wscript b/test/wscript
index 707b776f..84c21a93 100644
--- a/test/wscript
+++ b/test/wscript
@@ -90,3 +90,11 @@ def build(bld):
     obj.source = 'rewrite_subs.cc'
     obj.target = 'rewrite_subs'
     obj.install_path = ''
+
+    obj = bld(features='cxx cxxprogram')
+    obj.name   = 'bench'
+    obj.uselib = 'BOOST_FILESYSTEM OPENJPEG CXML'
+    obj.use = 'libdcp%s' % bld.env.API_VERSION
+    obj.source = 'bench.cc'
+    obj.target = 'bench'
+    obj.install_path = ''