497 lines
20 KiB
C++
497 lines
20 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 "packager/app/ad_cue_generator_flags.h"
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#include "packager/app/crypto_flags.h"
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#include "packager/app/hls_flags.h"
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#include "packager/app/mpd_flags.h"
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#include "packager/app/muxer_flags.h"
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#include "packager/app/packager_util.h"
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#include "packager/app/playready_key_encryption_flags.h"
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#include "packager/app/raw_key_encryption_flags.h"
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#include "packager/app/stream_descriptor.h"
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#include "packager/app/vlog_flags.h"
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#include "packager/app/widevine_encryption_flags.h"
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#include "packager/base/command_line.h"
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#include "packager/base/logging.h"
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#include "packager/base/optional.h"
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#include "packager/base/strings/string_number_conversions.h"
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#include "packager/base/strings/string_split.h"
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#include "packager/base/strings/string_util.h"
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#include "packager/base/strings/stringprintf.h"
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#include "packager/file/file.h"
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#include "packager/packager.h"
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#if defined(OS_WIN)
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#include <codecvt>
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#include <functional>
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#include <locale>
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#endif // defined(OS_WIN)
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DEFINE_bool(dump_stream_info, false, "Dump demuxed stream info.");
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DEFINE_bool(use_fake_clock_for_muxer,
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false,
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"Set to true to use a fake clock for muxer. With this flag set, "
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"creation time and modification time in outputs are set to 0. "
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"Should only be used for testing.");
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DEFINE_bool(override_version,
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false,
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"Override packager version in the generated outputs with "
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"--test_version if it is set to true. Should be used for "
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"testing only.");
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DEFINE_string(test_version,
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"",
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"Packager version for testing. Ignored if --override_version is "
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"false. Should be used for testing only.");
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namespace shaka {
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namespace {
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const char kUsage[] =
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"%s [flags] <stream_descriptor> ...\n\n"
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" stream_descriptor consists of comma separated field_name/value pairs:\n"
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" field_name=value,[field_name=value,]...\n"
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" Supported field names are as follows (names in parenthesis are alias):\n"
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" - input (in): Required input/source media file path or network stream\n"
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" URL.\n"
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" - stream_selector (stream): Required field with value 'audio',\n"
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" 'video', 'text', or stream number (zero based).\n"
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" - output (out,init_segment): Required output file (single file) or\n"
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" initialization file path (multiple file).\n"
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" - segment_template (segment): Optional value which specifies the\n"
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" naming pattern for the segment files, and that the stream should be\n"
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" split into multiple files. Its presence should be consistent across\n"
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" streams.\n"
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" - bandwidth (bw): Optional value which contains a user-specified\n"
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" content bit rate for the stream, in bits/sec. If specified, this\n"
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" value is propagated to (HLS) EXT-X-STREAM-INF:BANDWIDTH or (DASH)\n"
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" Representation@bandwidth and the $Bandwidth$ template parameter for\n"
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" segment names. If not specified, the bandwidth value is estimated\n"
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" from content bitrate. Note that it only affects the generated\n"
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" manifests/playlists; it has no effect on the media content itself.\n"
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" - language (lang): Optional value which contains a user-specified\n"
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" language tag. If specified, this value overrides any language\n"
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" metadata in the input stream.\n"
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" - output_format (format): Optional value which specifies the format\n"
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" of the output files (MP4 or WebM). If not specified, it will be\n"
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" derived from the file extension of the output file.\n"
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" - skip_encryption=0|1: Optional. Defaults to 0 if not specified. If\n"
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" it is set to 1, no encryption of the stream will be made.\n"
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" - drm_label: Optional value for custom DRM label, which defines the\n"
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" encryption key applied to the stream. Typical values include AUDIO,\n"
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" SD, HD, UHD1, UHD2. For raw key, it should be a label defined in\n"
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" --keys. If not provided, the DRM label is derived from stream type\n"
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" (video, audio), resolution, etc.\n"
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" Note that it is case sensitive.\n"
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" - trick_play_factor (tpf): Optional value which specifies the trick\n"
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" play, a.k.a. trick mode, stream sampling rate among key frames.\n"
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" If specified, the output is a trick play stream.\n"
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" - hls_name: Used for HLS audio to set the NAME attribute for\n"
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" EXT-X-MEDIA. Defaults to the base of the playlist name.\n"
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" - hls_group_id: Used for HLS audio to set the GROUP-ID attribute for\n"
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" EXT-X-MEDIA. Defaults to 'audio' if not specified.\n"
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" - playlist_name: Used for HLS to name the playlist for the stream.\n"
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" Usually ends with '.m3u8'. If unspecified, defaults to something of\n"
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" the form 'stream_0.m3u8', 'stream_1.m3u8', 'stream_2.m3u8', etc.\n";
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// Labels for parameters in RawKey key info.
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const char kDrmLabelLabel[] = "label";
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const char kKeyIdLabel[] = "key_id";
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const char kKeyLabel[] = "key";
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enum ExitStatus {
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kSuccess = 0,
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kArgumentValidationFailed,
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kPackagingFailed,
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kInternalError,
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};
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bool GetWidevineSigner(WidevineSigner* signer) {
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signer->signer_name = FLAGS_signer;
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if (!FLAGS_aes_signing_key_bytes.empty()) {
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signer->signing_key_type = WidevineSigner::SigningKeyType::kAes;
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signer->aes.key = FLAGS_aes_signing_key_bytes;
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signer->aes.iv = FLAGS_aes_signing_iv_bytes;
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} else if (!FLAGS_rsa_signing_key_path.empty()) {
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signer->signing_key_type = WidevineSigner::SigningKeyType::kRsa;
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if (!File::ReadFileToString(FLAGS_rsa_signing_key_path.c_str(),
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&signer->rsa.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 false;
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}
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}
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return true;
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}
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bool GetHlsPlaylistType(const std::string& playlist_type,
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HlsPlaylistType* playlist_type_enum) {
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if (base::ToUpperASCII(playlist_type) == "VOD") {
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*playlist_type_enum = HlsPlaylistType::kVod;
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} else if (base::ToUpperASCII(playlist_type) == "LIVE") {
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*playlist_type_enum = HlsPlaylistType::kLive;
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} else if (base::ToUpperASCII(playlist_type) == "EVENT") {
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*playlist_type_enum = HlsPlaylistType::kEvent;
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} else {
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LOG(ERROR) << "Unrecognized playlist type " << playlist_type;
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return false;
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}
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return true;
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}
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bool GetProtectionScheme(uint32_t* protection_scheme) {
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if (FLAGS_protection_scheme == "cenc") {
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*protection_scheme = EncryptionParams::kProtectionSchemeCenc;
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return true;
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}
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if (FLAGS_protection_scheme == "cbc1") {
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*protection_scheme = EncryptionParams::kProtectionSchemeCbc1;
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return true;
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}
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if (FLAGS_protection_scheme == "cbcs") {
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*protection_scheme = EncryptionParams::kProtectionSchemeCbcs;
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return true;
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}
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if (FLAGS_protection_scheme == "cens") {
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*protection_scheme = EncryptionParams::kProtectionSchemeCens;
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return true;
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}
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LOG(ERROR) << "Unrecognized protection_scheme " << FLAGS_protection_scheme;
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return false;
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}
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bool ParseKeys(const std::string& keys, RawKeyParams* raw_key) {
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for (const std::string& key_data : base::SplitString(
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keys, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY)) {
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base::StringPairs string_pairs;
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base::SplitStringIntoKeyValuePairs(key_data, '=', ':', &string_pairs);
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std::map<std::string, std::string> value_map;
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for (const auto& string_pair : string_pairs)
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value_map[string_pair.first] = string_pair.second;
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const std::string drm_label = value_map[kDrmLabelLabel];
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if (raw_key->key_map.find(drm_label) != raw_key->key_map.end()) {
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LOG(ERROR) << "Seeing duplicated DRM label '" << drm_label << "'.";
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return false;
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}
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auto& key_info = raw_key->key_map[drm_label];
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if (value_map[kKeyIdLabel].empty() ||
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!base::HexStringToBytes(value_map[kKeyIdLabel], &key_info.key_id)) {
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LOG(ERROR) << "Empty key id or invalid hex string for key id: "
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<< value_map[kKeyIdLabel];
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return false;
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}
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if (value_map[kKeyLabel].empty() ||
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!base::HexStringToBytes(value_map[kKeyLabel], &key_info.key)) {
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LOG(ERROR) << "Empty key or invalid hex string for key: "
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<< value_map[kKeyLabel];
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return false;
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}
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}
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return true;
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}
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bool GetRawKeyParams(RawKeyParams* raw_key) {
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raw_key->iv = FLAGS_iv_bytes;
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raw_key->pssh = FLAGS_pssh_bytes;
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if (!FLAGS_keys.empty()) {
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if (!ParseKeys(FLAGS_keys, raw_key)) {
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LOG(ERROR) << "Failed to parse --keys " << FLAGS_keys;
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return false;
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}
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} else {
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// An empty StreamLabel specifies the default key info.
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RawKeyParams::KeyInfo& key_info = raw_key->key_map[""];
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key_info.key_id = FLAGS_key_id_bytes;
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key_info.key = FLAGS_key_bytes;
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}
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return true;
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}
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bool ParseAdCues(const std::string& ad_cues, std::vector<Cuepoint>* cuepoints) {
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// Track if optional field is supplied consistently across all cue points.
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size_t duration_count = 0;
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for (const std::string& ad_cue : base::SplitString(
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ad_cues, ";", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY)) {
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Cuepoint cuepoint;
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auto split_ad_cue = base::SplitString(ad_cue, ",", base::TRIM_WHITESPACE,
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base::SPLIT_WANT_NONEMPTY);
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if (split_ad_cue.size() > 2) {
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LOG(ERROR) << "Failed to parse --ad_cues " << ad_cues
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<< " Each ad cue must contain no more than 2 components.";
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}
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if (!base::StringToDouble(split_ad_cue.front(),
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&cuepoint.start_time_in_seconds)) {
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LOG(ERROR) << "Failed to parse --ad_cues " << ad_cues
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<< " Start time component must be of type double.";
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return false;
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}
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if (split_ad_cue.size() > 1) {
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duration_count++;
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if (!base::StringToDouble(split_ad_cue[1],
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&cuepoint.duration_in_seconds)) {
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LOG(ERROR) << "Failed to parse --ad_cues " << ad_cues
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<< " Duration component must be of type double.";
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return false;
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}
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}
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cuepoints->push_back(cuepoint);
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}
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if (duration_count > 0 && duration_count != cuepoints->size()) {
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LOG(ERROR) << "Failed to parse --ad_cues " << ad_cues
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<< " Duration component is optional. However if it is supplied,"
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<< " it must be supplied consistently across all cuepoints.";
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return false;
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}
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return true;
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}
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base::Optional<PackagingParams> GetPackagingParams() {
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PackagingParams packaging_params;
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AdCueGeneratorParams& ad_cue_generator_params =
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packaging_params.ad_cue_generator_params;
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if (!ParseAdCues(FLAGS_ad_cues, &ad_cue_generator_params.cue_points)) {
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return base::nullopt;
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}
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ChunkingParams& chunking_params = packaging_params.chunking_params;
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chunking_params.segment_duration_in_seconds = FLAGS_segment_duration;
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chunking_params.subsegment_duration_in_seconds = FLAGS_fragment_duration;
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chunking_params.segment_sap_aligned = FLAGS_segment_sap_aligned;
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chunking_params.subsegment_sap_aligned = FLAGS_fragment_sap_aligned;
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int num_key_providers = 0;
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EncryptionParams& encryption_params = packaging_params.encryption_params;
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if (FLAGS_enable_widevine_encryption) {
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encryption_params.key_provider = KeyProvider::kWidevine;
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++num_key_providers;
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}
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if (FLAGS_enable_playready_encryption) {
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encryption_params.key_provider = KeyProvider::kPlayready;
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++num_key_providers;
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}
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if (FLAGS_enable_raw_key_encryption) {
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encryption_params.key_provider = KeyProvider::kRawKey;
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++num_key_providers;
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}
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if (num_key_providers > 1) {
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LOG(ERROR) << "Only one of --enable_widevine_encryption, "
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"--enable_playready_encryption, "
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"--enable_raw_key_encryption can be enabled.";
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return base::nullopt;
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}
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if (encryption_params.key_provider != KeyProvider::kNone) {
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encryption_params.clear_lead_in_seconds = FLAGS_clear_lead;
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if (!GetProtectionScheme(&encryption_params.protection_scheme))
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return base::nullopt;
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encryption_params.crypto_period_duration_in_seconds =
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FLAGS_crypto_period_duration;
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encryption_params.vp9_subsample_encryption = FLAGS_vp9_subsample_encryption;
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encryption_params.stream_label_func = std::bind(
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&Packager::DefaultStreamLabelFunction, FLAGS_max_sd_pixels,
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FLAGS_max_hd_pixels, FLAGS_max_uhd1_pixels, std::placeholders::_1);
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}
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switch (encryption_params.key_provider) {
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case KeyProvider::kWidevine: {
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WidevineEncryptionParams& widevine = encryption_params.widevine;
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widevine.key_server_url = FLAGS_key_server_url;
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widevine.include_common_pssh = FLAGS_include_common_pssh;
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widevine.content_id = FLAGS_content_id_bytes;
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widevine.policy = FLAGS_policy;
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widevine.group_id = FLAGS_group_id_bytes;
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if (!GetWidevineSigner(&widevine.signer))
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return base::nullopt;
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break;
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}
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case KeyProvider::kPlayready: {
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PlayreadyEncryptionParams& playready = encryption_params.playready;
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playready.key_server_url = FLAGS_playready_server_url;
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playready.program_identifier = FLAGS_program_identifier;
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playready.ca_file = FLAGS_ca_file;
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playready.client_cert_file = FLAGS_client_cert_file;
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playready.client_cert_private_key_file =
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FLAGS_client_cert_private_key_file;
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playready.client_cert_private_key_password =
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FLAGS_client_cert_private_key_password;
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playready.key_id = FLAGS_playready_key_id_bytes;
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playready.key = FLAGS_playready_key_bytes;
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break;
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}
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case KeyProvider::kRawKey: {
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if (!GetRawKeyParams(&encryption_params.raw_key))
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return base::nullopt;
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break;
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}
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case KeyProvider::kNone:
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break;
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}
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num_key_providers = 0;
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DecryptionParams& decryption_params = packaging_params.decryption_params;
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if (FLAGS_enable_widevine_decryption) {
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decryption_params.key_provider = KeyProvider::kWidevine;
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++num_key_providers;
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}
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if (FLAGS_enable_raw_key_decryption) {
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decryption_params.key_provider = KeyProvider::kRawKey;
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++num_key_providers;
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}
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if (num_key_providers > 1) {
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LOG(ERROR) << "Only one of --enable_widevine_decryption, "
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"--enable_raw_key_decryption can be enabled.";
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return base::nullopt;
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}
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switch (decryption_params.key_provider) {
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case KeyProvider::kWidevine: {
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WidevineDecryptionParams& widevine = decryption_params.widevine;
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widevine.key_server_url = FLAGS_key_server_url;
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if (!GetWidevineSigner(&widevine.signer))
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return base::nullopt;
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break;
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}
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case KeyProvider::kRawKey: {
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if (!GetRawKeyParams(&decryption_params.raw_key))
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return base::nullopt;
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break;
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}
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case KeyProvider::kPlayready:
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case KeyProvider::kNone:
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break;
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}
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Mp4OutputParams& mp4_params = packaging_params.mp4_output_params;
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mp4_params.num_subsegments_per_sidx = FLAGS_num_subsegments_per_sidx;
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if (FLAGS_mp4_use_decoding_timestamp_in_timeline) {
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LOG(WARNING) << "Flag --mp4_use_decoding_timestamp_in_timeline is set. "
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"Note that it is a temporary hack to workaround Chromium "
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"bug https://crbug.com/398130. The flag may be removed "
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"when the Chromium bug is fixed.";
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}
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mp4_params.use_decoding_timestamp_in_timeline =
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FLAGS_mp4_use_decoding_timestamp_in_timeline;
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mp4_params.include_pssh_in_stream = FLAGS_mp4_include_pssh_in_stream;
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packaging_params.output_media_info = FLAGS_output_media_info;
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MpdParams& mpd_params = packaging_params.mpd_params;
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mpd_params.generate_static_live_mpd = FLAGS_generate_static_mpd;
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mpd_params.mpd_output = FLAGS_mpd_output;
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mpd_params.base_urls = base::SplitString(
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FLAGS_base_urls, ",", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
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mpd_params.generate_dash_if_iop_compliant_mpd =
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FLAGS_generate_dash_if_iop_compliant_mpd;
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mpd_params.minimum_update_period = FLAGS_minimum_update_period;
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mpd_params.min_buffer_time = FLAGS_min_buffer_time;
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mpd_params.time_shift_buffer_depth = FLAGS_time_shift_buffer_depth;
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mpd_params.suggested_presentation_delay = FLAGS_suggested_presentation_delay;
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mpd_params.default_language = FLAGS_default_language;
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HlsParams& hls_params = packaging_params.hls_params;
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if (!GetHlsPlaylistType(FLAGS_hls_playlist_type, &hls_params.playlist_type)) {
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return base::nullopt;
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}
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hls_params.master_playlist_output = FLAGS_hls_master_playlist_output;
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hls_params.base_url = FLAGS_hls_base_url;
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hls_params.key_uri = FLAGS_hls_key_uri;
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hls_params.time_shift_buffer_depth = FLAGS_time_shift_buffer_depth;
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TestParams& test_params = packaging_params.test_params;
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test_params.dump_stream_info = FLAGS_dump_stream_info;
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test_params.inject_fake_clock = FLAGS_use_fake_clock_for_muxer;
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if (FLAGS_override_version)
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test_params.injected_library_version = FLAGS_test_version;
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return packaging_params;
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}
|
|
|
|
int PackagerMain(int argc, char** argv) {
|
|
// Needed to enable VLOG/DVLOG through --vmodule or --v.
|
|
base::CommandLine::Init(argc, argv);
|
|
|
|
// Set up logging.
|
|
logging::LoggingSettings log_settings;
|
|
log_settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
|
|
CHECK(logging::InitLogging(log_settings));
|
|
|
|
google::SetVersionString(shaka::Packager::GetLibraryVersion());
|
|
google::SetUsageMessage(base::StringPrintf(kUsage, argv[0]));
|
|
google::ParseCommandLineFlags(&argc, &argv, true);
|
|
if (argc < 2) {
|
|
google::ShowUsageWithFlags("Usage");
|
|
return kSuccess;
|
|
}
|
|
|
|
if (!ValidateWidevineCryptoFlags() || !ValidateRawKeyCryptoFlags() ||
|
|
!ValidatePRCryptoFlags()) {
|
|
return kArgumentValidationFailed;
|
|
}
|
|
|
|
base::Optional<PackagingParams> packaging_params = GetPackagingParams();
|
|
if (!packaging_params)
|
|
return kArgumentValidationFailed;
|
|
|
|
std::vector<StreamDescriptor> stream_descriptors;
|
|
for (int i = 1; i < argc; ++i) {
|
|
base::Optional<StreamDescriptor> stream_descriptor =
|
|
ParseStreamDescriptor(argv[i]);
|
|
if (!stream_descriptor)
|
|
return kArgumentValidationFailed;
|
|
stream_descriptors.push_back(stream_descriptor.value());
|
|
}
|
|
Packager packager;
|
|
Status status =
|
|
packager.Initialize(packaging_params.value(), stream_descriptors);
|
|
if (!status.ok()) {
|
|
LOG(ERROR) << "Failed to initialize packager: " << status.ToString();
|
|
return kArgumentValidationFailed;
|
|
}
|
|
status = packager.Run();
|
|
if (!status.ok()) {
|
|
LOG(ERROR) << "Packaging Error: " << status.ToString();
|
|
return kPackagingFailed;
|
|
}
|
|
printf("Packaging completed successfully.\n");
|
|
return kSuccess;
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace shaka
|
|
|
|
#if defined(OS_WIN)
|
|
// Windows wmain, which converts wide character arguments to UTF-8.
|
|
int wmain(int argc, wchar_t* argv[], wchar_t* envp[]) {
|
|
std::unique_ptr<char* [], std::function<void(char**)>> utf8_argv(
|
|
new char*[argc], [argc](char** utf8_args) {
|
|
// TODO(tinskip): This leaks, but if this code is enabled, it crashes.
|
|
// Figure out why. I suspect gflags does something funny with the
|
|
// argument array.
|
|
// for (int idx = 0; idx < argc; ++idx)
|
|
// delete[] utf8_args[idx];
|
|
delete[] utf8_args;
|
|
});
|
|
std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
|
|
for (int idx = 0; idx < argc; ++idx) {
|
|
std::string utf8_arg(converter.to_bytes(argv[idx]));
|
|
utf8_arg += '\0';
|
|
utf8_argv[idx] = new char[utf8_arg.size()];
|
|
memcpy(utf8_argv[idx], &utf8_arg[0], utf8_arg.size());
|
|
}
|
|
return shaka::PackagerMain(argc, utf8_argv.get());
|
|
}
|
|
#else
|
|
int main(int argc, char** argv) {
|
|
return shaka::PackagerMain(argc, argv);
|
|
}
|
|
#endif // defined(OS_WIN)
|