sandboxed-api/oss-internship-2020/guetzli/guetzli_sandboxed.cc

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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <cstdio>
#include <iostream>
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#include "guetzli_transaction.h" // NOLINT(build/include)
#include "sandboxed_api/util/fileops.h"
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namespace {
constexpr int kDefaultJPEGQuality = 95;
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constexpr int kDefaultMemlimitMB = 6000;
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void Usage() {
fprintf(stderr,
"Guetzli JPEG compressor. Usage: \n"
"guetzli [flags] input_filename output_filename\n"
"\n"
"Flags:\n"
" --verbose - Print a verbose trace of all attempts to standard "
"output.\n"
" --quality Q - Visual quality to aim for, expressed as a JPEG "
"quality value.\n"
" Default value is %d.\n"
" --memlimit M - Memory limit in MB. Guetzli will fail if unable to "
"stay under\n"
" the limit. Default limit is %d MB.\n"
" --nomemlimit - Do not limit memory usage.\n",
kDefaultJPEGQuality, kDefaultMemlimitMB);
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exit(1);
}
} // namespace
int main(int argc, const char** argv) {
int verbose = 0;
int quality = kDefaultJPEGQuality;
int memlimit_mb = kDefaultMemlimitMB;
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int opt_idx = 1;
for (; opt_idx < argc; opt_idx++) {
if (strnlen(argv[opt_idx], 2) < 2 || argv[opt_idx][0] != '-' ||
argv[opt_idx][1] != '-')
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break;
if (!strcmp(argv[opt_idx], "--verbose")) {
verbose = 1;
} else if (!strcmp(argv[opt_idx], "--quality")) {
opt_idx++;
if (opt_idx >= argc) Usage();
quality = atoi(argv[opt_idx]); // NOLINT(runtime/deprecated_fn)
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} else if (!strcmp(argv[opt_idx], "--memlimit")) {
opt_idx++;
if (opt_idx >= argc) Usage();
memlimit_mb = atoi(argv[opt_idx]); // NOLINT(runtime/deprecated_fn)
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} else if (!strcmp(argv[opt_idx], "--nomemlimit")) {
memlimit_mb = -1;
} else if (!strcmp(argv[opt_idx], "--")) {
opt_idx++;
break;
} else {
fprintf(stderr, "Unknown commandline flag: %s\n", argv[opt_idx]);
Usage();
}
}
if (argc - opt_idx != 2) {
Usage();
}
guetzli::sandbox::TransactionParams params = {
argv[opt_idx], argv[opt_idx + 1], verbose, quality, memlimit_mb};
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guetzli::sandbox::GuetzliTransaction transaction(std::move(params));
auto result = transaction.Run();
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if (!result.ok()) {
std::cerr << result.ToString() << std::endl;
return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}