242 lines
8.2 KiB
C++
242 lines
8.2 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include <gflags/gflags.h>
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#include <iostream>
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#include "app/fixed_key_encryption_flags.h"
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#include "app/muxer_flags.h"
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#include "app/widevine_encryption_flags.h"
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#include "base/file_util.h"
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#include "base/logging.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/stringprintf.h"
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#include "media/base/demuxer.h"
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#include "media/base/media_stream.h"
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#include "media/base/muxer_options.h"
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#include "media/base/request_signer.h"
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#include "media/base/stream_info.h"
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#include "media/base/widevine_encryption_key_source.h"
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#include "media/event/vod_media_info_dump_muxer_listener.h"
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#include "media/file/file.h"
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#include "media/file/file_closer.h"
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#include "media/formats/mp4/mp4_muxer.h"
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DEFINE_bool(dump_stream_info, false, "Dump demuxed stream info.");
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namespace {
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const char kUsage[] =
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"Packager driver program. Sample Usage:\n%s <input> [flags]";
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} // namespace
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namespace media {
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void DumpStreamInfo(const std::vector<MediaStream*>& streams) {
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printf("Found %zu stream(s).\n", streams.size());
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for (size_t i = 0; i < streams.size(); ++i)
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printf("Stream [%zu] %s\n", i, streams[i]->info()->ToString().c_str());
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}
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// Create and initialize encryptor source.
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scoped_ptr<EncryptionKeySource> CreateEncryptionKeySource() {
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scoped_ptr<EncryptionKeySource> encryption_key_source;
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if (FLAGS_enable_widevine_encryption) {
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scoped_ptr<RequestSigner> signer;
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DCHECK(!FLAGS_aes_signing_key.empty() ||
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!FLAGS_rsa_signing_key_path.empty());
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if (!FLAGS_aes_signing_key.empty()) {
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signer.reset(
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AesRequestSigner::CreateSigner(FLAGS_signer, FLAGS_aes_signing_key,
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FLAGS_aes_signing_iv));
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if (!signer) {
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LOG(ERROR) << "Cannot create an AES signer object from '"
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<< FLAGS_aes_signing_key << "':'" << FLAGS_aes_signing_iv
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<< "'.";
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return scoped_ptr<EncryptionKeySource>();
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}
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} else if (!FLAGS_rsa_signing_key_path.empty()) {
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std::string rsa_private_key;
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if (!File::ReadFileToString(FLAGS_rsa_signing_key_path.c_str(),
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&rsa_private_key)) {
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LOG(ERROR) << "Failed to read from '" << FLAGS_rsa_signing_key_path
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<< "'.";
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return scoped_ptr<EncryptionKeySource>();
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}
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signer.reset(
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RsaRequestSigner::CreateSigner(FLAGS_signer, rsa_private_key));
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if (!signer) {
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LOG(ERROR) << "Cannot create a RSA signer object from '"
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<< FLAGS_rsa_signing_key_path << "'.";
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return scoped_ptr<EncryptionKeySource>();
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}
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}
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encryption_key_source.reset(new WidevineEncryptionKeySource(
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FLAGS_server_url, FLAGS_content_id, signer.Pass()));
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} else if (FLAGS_enable_fixed_key_encryption) {
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encryption_key_source = EncryptionKeySource::CreateFromHexStrings(
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FLAGS_key_id, FLAGS_key, FLAGS_pssh, "");
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}
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return encryption_key_source.Pass();
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}
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bool GetMuxerOptions(MuxerOptions* muxer_options) {
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DCHECK(muxer_options);
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muxer_options->single_segment = FLAGS_single_segment;
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muxer_options->segment_duration = FLAGS_segment_duration;
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muxer_options->fragment_duration = FLAGS_fragment_duration;
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muxer_options->segment_sap_aligned = FLAGS_segment_sap_aligned;
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muxer_options->fragment_sap_aligned = FLAGS_fragment_sap_aligned;
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muxer_options->normalize_presentation_timestamp =
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FLAGS_normalize_presentation_timestamp;
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muxer_options->num_subsegments_per_sidx = FLAGS_num_subsegments_per_sidx;
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muxer_options->output_file_name = FLAGS_output;
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muxer_options->segment_template = FLAGS_segment_template;
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muxer_options->temp_file_name = FLAGS_temp_file;
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// Create a temp file if needed.
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if (muxer_options->single_segment && muxer_options->temp_file_name.empty()) {
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base::FilePath path;
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if (!base::CreateTemporaryFile(&path)) {
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LOG(ERROR) << "Failed to create a temporary file.";
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return false;
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}
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muxer_options->temp_file_name = path.value();
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}
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return true;
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}
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MediaStream* FindFirstStreamOfType(const std::vector<MediaStream*>& streams,
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StreamType stream_type) {
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typedef std::vector<MediaStream*>::const_iterator StreamIterator;
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for (StreamIterator it = streams.begin(); it != streams.end(); ++it) {
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if ((*it)->info()->stream_type() == stream_type)
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return *it;
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}
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return NULL;
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}
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MediaStream* FindFirstVideoStream(const std::vector<MediaStream*>& streams) {
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return FindFirstStreamOfType(streams, kStreamVideo);
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}
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MediaStream* FindFirstAudioStream(const std::vector<MediaStream*>& streams) {
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return FindFirstStreamOfType(streams, kStreamAudio);
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}
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bool AddStreamToMuxer(const std::vector<MediaStream*>& streams, Muxer* muxer) {
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DCHECK(muxer);
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MediaStream* stream = NULL;
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if (FLAGS_stream == "video") {
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stream = FindFirstVideoStream(streams);
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} else if (FLAGS_stream == "audio") {
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stream = FindFirstAudioStream(streams);
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} else {
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// Expect FLAGS_stream to be a zero based stream id.
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size_t stream_id;
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if (!base::StringToSizeT(FLAGS_stream, &stream_id) ||
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stream_id >= streams.size()) {
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LOG(ERROR) << "Invalid argument --stream=" << FLAGS_stream << "; "
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<< "should be 'audio', 'video', or a number within [0, "
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<< streams.size() - 1 << "].";
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return false;
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}
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stream = streams[stream_id];
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DCHECK(stream);
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}
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// This could occur only if FLAGS_stream=audio|video and the corresponding
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// stream does not exist in the input.
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if (!stream) {
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LOG(ERROR) << "No " << FLAGS_stream << " stream found in the input.";
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return false;
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}
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muxer->AddStream(stream);
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return true;
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}
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bool RunPackager(const std::string& input) {
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Status status;
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// Setup and initialize Demuxer.
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Demuxer demuxer(input, NULL);
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status = demuxer.Initialize();
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if (!status.ok()) {
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LOG(ERROR) << "Demuxer failed to initialize: " << status.ToString();
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return false;
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}
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if (FLAGS_dump_stream_info)
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DumpStreamInfo(demuxer.streams());
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if (FLAGS_output.empty()) {
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if (!FLAGS_dump_stream_info)
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LOG(WARNING) << "No output specified. Exiting.";
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return true;
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}
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// Setup muxer.
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MuxerOptions muxer_options;
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if (!GetMuxerOptions(&muxer_options))
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return false;
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scoped_ptr<Muxer> muxer(new mp4::MP4Muxer(muxer_options));
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scoped_ptr<event::MuxerListener> muxer_listener;
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scoped_ptr<File, FileCloser> mpd_file;
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if (FLAGS_output_media_info) {
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std::string output_mpd_file_name = FLAGS_output + ".media_info";
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mpd_file.reset(File::Open(output_mpd_file_name.c_str(), "w"));
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if (!mpd_file) {
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LOG(ERROR) << "Failed to open " << output_mpd_file_name;
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return false;
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}
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scoped_ptr<event::VodMediaInfoDumpMuxerListener> media_info_muxer_listener(
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new event::VodMediaInfoDumpMuxerListener(mpd_file.get()));
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media_info_muxer_listener->SetContentProtectionSchemeIdUri(
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FLAGS_scheme_id_uri);
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muxer_listener = media_info_muxer_listener.Pass();
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muxer->SetMuxerListener(muxer_listener.get());
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}
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if (!AddStreamToMuxer(demuxer.streams(), muxer.get()))
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return false;
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scoped_ptr<EncryptionKeySource> encryption_key_source;
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if (FLAGS_enable_widevine_encryption || FLAGS_enable_fixed_key_encryption) {
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encryption_key_source = CreateEncryptionKeySource();
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if (!encryption_key_source)
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return false;
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muxer->SetEncryptionKeySource(encryption_key_source.get(),
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FLAGS_max_sd_pixels,
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FLAGS_clear_lead,
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FLAGS_crypto_period_duration);
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}
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// Start remuxing process.
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status = demuxer.Run();
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if (!status.ok()) {
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LOG(ERROR) << "Remuxing failed: " << status.ToString();
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return false;
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}
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printf("Packaging completed successfully.\n");
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return true;
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}
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} // namespace media
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int main(int argc, char** argv) {
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google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));
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google::ParseCommandLineFlags(&argc, &argv, true);
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if (argc < 2) {
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google::ShowUsageWithFlags(argv[0]);
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return 1;
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}
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return media::RunPackager(argv[1]) ? 0 : 1;
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}
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