shaka-packager/packager/app/mpd_generator.cc

98 lines
2.7 KiB
C++

// Copyright 2014 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include "packager/app/mpd_generator_flags.h"
#include "packager/base/logging.h"
#include "packager/base/strings/string_split.h"
#include "packager/base/strings/stringprintf.h"
#include "packager/mpd/util/mpd_writer.h"
namespace edash_packager {
namespace {
const char kUsage[] =
"MPD generation driver program.\n"
"This program accepts MediaInfo files in human readable text "
"format and outputs an MPD.\n"
"The main use case for this is to output MPD for VOD.\n"
"Limitations:\n"
" Each MediaInfo can only have one of VideoInfo, AudioInfo, or TextInfo.\n"
" There will be at most 3 AdaptationSets in the MPD, i.e. 1 video, 1 "
"audio, and 1 text.\n"
"Sample Usage:\n"
"%s --input=\"video1.media_info,video2.media_info,audio1.media_info\" "
"--output=\"video_audio.mpd\"";
enum ExitStatus {
kSuccess = 0,
kEmptyInputError,
kEmptyOutputError,
kFailedToWriteMpdToFileError
};
ExitStatus CheckRequiredFlags() {
if (FLAGS_input.empty()) {
LOG(ERROR) << "--input is required.";
return kEmptyInputError;
}
if (FLAGS_output.empty()) {
LOG(ERROR) << "--output is required.";
return kEmptyOutputError;
}
return kSuccess;
}
ExitStatus RunMpdGenerator() {
DCHECK_EQ(CheckRequiredFlags(), kSuccess);
std::vector<std::string> base_urls;
std::vector<std::string> input_files;
typedef std::vector<std::string>::const_iterator Iterator;
base::SplitString(FLAGS_input, ',', &input_files);
if (!FLAGS_base_urls.empty()) {
base::SplitString(FLAGS_base_urls, ',', &base_urls);
}
edash_packager::MpdWriter mpd_writer;
for (Iterator it = base_urls.begin(); it != base_urls.end(); ++it)
mpd_writer.AddBaseUrl(*it);
for (Iterator it = input_files.begin(); it != input_files.end(); ++it) {
if (!mpd_writer.AddFile(it->c_str(), FLAGS_output)) {
LOG(WARNING) << "MpdWriter failed to read " << *it << ", skipping.";
}
}
if (!mpd_writer.WriteMpdToFile(FLAGS_output.c_str())) {
LOG(ERROR) << "Failed to write MPD to " << FLAGS_output;
return kFailedToWriteMpdToFileError;
}
return kSuccess;
}
int MpdMain(int argc, char** argv) {
google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));
google::ParseCommandLineFlags(&argc, &argv, true);
ExitStatus status = CheckRequiredFlags();
if (status != kSuccess) {
google::ShowUsageWithFlags(argv[0]);
return status;
}
return RunMpdGenerator();
}
} // namespace
} // namespace edash_packager
int main(int argc, char** argv) {
return edash_packager::MpdMain(argc, argv);
}