Remove FairPlayPsshGenerator

This was introduced earlier to indicate FairPlay protection system. But
in fact, it is sufficient to just use the system id for the indication.

- Also updated various parts of the pipeline to support empty PSSH.
- Added an additional FairPlay end to end test using fMP4.

Change-Id: Ica48b7b5235e9a2b5a7f722bcd0fc1ef2073ac13

packager/app/test/packager_test.py

@@ -862,6 +862,13 @@ class PackagerFunctionalTest(PackagerAppTest):
         self._GetFlags(encryption=True, output_dash=True))
     self._CheckTestResults('encryption', verify_decryption=True)
 
+  def testEncryptionWithFairplay(self):
+    self.assertPackageSuccess(
+        self._GetStreams(['audio', 'video']),
+        self._GetFlags(
+            encryption=True, fairplay=True, output_dash=True, output_hls=True))
+    self._CheckTestResults('encryption-with-fairplay')
+
   # Test deprecated flag --enable_fixed_key_encryption, which is still
   # supported currently.
   def testEncryptionUsingFixedKey(self):

packager/app/test/testdata/encryption-with-fairplay/output.m3u8

@@ -0,0 +1,7 @@
+#EXTM3U
+## Generated with https://github.com/google/shaka-packager version <tag>-<hash>-<test>
+
+#EXT-X-MEDIA:TYPE=AUDIO,URI="stream_0.m3u8",GROUP-ID="default-audio-group",NAME="stream_0",AUTOSELECT=YES,CHANNELS="2"
+
+#EXT-X-STREAM-INF:BANDWIDTH=1111406,AVERAGE-BANDWIDTH=1009412,CODECS="avc1.64001e,mp4a.40.2",RESOLUTION=640x360,AUDIO="default-audio-group"
+stream_1.m3u8

packager/app/test/testdata/encryption-with-fairplay/output.mpd

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--Generated with https://github.com/google/shaka-packager version <tag>-<hash>-<test>-->
+<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd" xmlns:cenc="urn:mpeg:cenc:2013" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" minBufferTime="PT2S" type="static" mediaPresentationDuration="PT2.7360665798187256S">
+  <Period id="0">
+    <AdaptationSet id="0" contentType="video" width="640" height="360" frameRate="30000/1001" subsegmentAlignment="true" par="16:9">
+      <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="31323334-3536-3738-3930-313233343536"/>
+      <ContentProtection schemeIdUri="urn:uuid:29701fe4-3cc7-4a34-8c5b-ae90c7439a47"/>
+      <Representation id="0" bandwidth="977743" codecs="avc1.64001e" mimeType="video/mp4" sar="1:1">
+        <BaseURL>bear-640x360-video.mp4</BaseURL>
+        <SegmentBase indexRange="1075-1142" timescale="30000">
+          <Initialization range="0-1074"/>
+        </SegmentBase>
+      </Representation>
+    </AdaptationSet>
+    <AdaptationSet id="1" contentType="audio" subsegmentAlignment="true">
+      <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="31323334-3536-3738-3930-313233343536"/>
+      <ContentProtection schemeIdUri="urn:uuid:29701fe4-3cc7-4a34-8c5b-ae90c7439a47"/>
+      <Representation id="1" bandwidth="133663" codecs="mp4a.40.2" mimeType="audio/mp4" audioSamplingRate="44100">
+        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
+        <BaseURL>bear-640x360-audio.mp4</BaseURL>
+        <SegmentBase indexRange="951-1018" timescale="44100">
+          <Initialization range="0-950"/>
+        </SegmentBase>
+      </Representation>
+    </AdaptationSet>
+  </Period>
+</MPD>

packager/app/test/testdata/encryption-with-fairplay/stream_0.m3u8

@@ -0,0 +1,17 @@
+#EXTM3U
+#EXT-X-VERSION:6
+## Generated with https://github.com/google/shaka-packager version <tag>-<hash>-<test>
+#EXT-X-TARGETDURATION:2
+#EXT-X-PLAYLIST-TYPE:VOD
+#EXT-X-MAP:URI="bear-640x360-audio.mp4",BYTERANGE="951@0"
+#EXT-X-KEY:METHOD=SAMPLE-AES-CTR,URI="skd://www.license.com/getkey?KeyId=31323334-3536-3738-3930-313233343536",KEYFORMATVERSIONS="1",KEYFORMAT="com.apple.streamingkeydelivery"
+#EXTINF:1.022,
+#EXT-X-BYTERANGE:17028@1019
+bear-640x360-audio.mp4
+#EXTINF:0.998,
+#EXT-X-BYTERANGE:16682
+bear-640x360-audio.mp4
+#EXTINF:0.720,
+#EXT-X-BYTERANGE:9859
+bear-640x360-audio.mp4
+#EXT-X-ENDLIST

packager/app/test/testdata/encryption-with-fairplay/stream_1.m3u8

@@ -0,0 +1,17 @@
+#EXTM3U
+#EXT-X-VERSION:6
+## Generated with https://github.com/google/shaka-packager version <tag>-<hash>-<test>
+#EXT-X-TARGETDURATION:2
+#EXT-X-PLAYLIST-TYPE:VOD
+#EXT-X-MAP:URI="bear-640x360-video.mp4",BYTERANGE="1075@0"
+#EXT-X-KEY:METHOD=SAMPLE-AES-CTR,URI="skd://www.license.com/getkey?KeyId=31323334-3536-3738-3930-313233343536",KEYFORMATVERSIONS="1",KEYFORMAT="com.apple.streamingkeydelivery"
+#EXTINF:1.001,
+#EXT-X-BYTERANGE:99313@1143
+bear-640x360-video.mp4
+#EXTINF:1.001,
+#EXT-X-BYTERANGE:122340
+bear-640x360-video.mp4
+#EXTINF:0.734,
+#EXT-X-BYTERANGE:80067
+bear-640x360-video.mp4
+#EXT-X-ENDLIST

packager/media/base/fairplay_pssh_generator.cc

@@ -1,44 +0,0 @@
-// Copyright 2018 Google LLC. 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/media/base/fairplay_pssh_generator.h"
-
-#include "packager/media/base/protection_system_ids.h"
-
-namespace shaka {
-namespace media {
-namespace {
-const uint8_t kFairPlayPsshBoxVersion = 1;
-}  // namespace
-
-FairPlayPsshGenerator::FairPlayPsshGenerator()
-    : PsshGenerator(std::vector<uint8_t>(std::begin(kFairPlaySystemId),
-                                         std::end(kFairPlaySystemId)),
-                    kFairPlayPsshBoxVersion) {}
-
-FairPlayPsshGenerator::~FairPlayPsshGenerator() = default;
-
-bool FairPlayPsshGenerator::SupportMultipleKeys() {
-  return true;
-}
-
-base::Optional<std::vector<uint8_t>>
-FairPlayPsshGenerator::GeneratePsshDataFromKeyIdAndKey(
-    const std::vector<uint8_t>& key_id,
-    const std::vector<uint8_t>& key) const {
-  NOTIMPLEMENTED();
-  return base::nullopt;
-}
-
-base::Optional<std::vector<uint8_t>>
-FairPlayPsshGenerator::GeneratePsshDataFromKeyIds(
-    const std::vector<std::vector<uint8_t>>& key_ids) const {
-  // Intentionally empty PSSH data for FairPlay.
-  return std::vector<uint8_t>();
-}
-
-}  // namespace media
-}  // namespace shaka

packager/media/base/fairplay_pssh_generator.h

@@ -1,42 +0,0 @@
-// Copyright 2018 Google LLC. 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
-
-#ifndef PACKAGER_MEDIA_BASE_FAIRPLAY_PSSH_GENERATOR_H_
-#define PACKAGER_MEDIA_BASE_FAIRPLAY_PSSH_GENERATOR_H_
-
-#include "packager/media/base/pssh_generator.h"
-
-namespace shaka {
-namespace media {
-
-class FairPlayPsshGenerator : public PsshGenerator {
- public:
-  FairPlayPsshGenerator();
-  ~FairPlayPsshGenerator() override;
-
-  /// @name PsshGenerator implemetation overrides.
-  /// @{
-  bool SupportMultipleKeys() override;
-  /// @}
-
- private:
-  FairPlayPsshGenerator& operator=(const FairPlayPsshGenerator&) = delete;
-  FairPlayPsshGenerator(const FairPlayPsshGenerator&) = delete;
-
-  // PsshGenerator implemetation overrides.
-
-  base::Optional<std::vector<uint8_t>> GeneratePsshDataFromKeyIds(
-      const std::vector<std::vector<uint8_t>>& key_ids) const override;
-
-  base::Optional<std::vector<uint8_t>> GeneratePsshDataFromKeyIdAndKey(
-      const std::vector<uint8_t>& key_id,
-      const std::vector<uint8_t>& key) const override;
-};
-
-}  // namespace media
-}  // namespace shaka
-
-#endif  // PACKAGER_MEDIA_BASE_FAIRPLAY_PSSH_GENERATOR_H_

packager/media/base/key_source.cc

@@ -8,8 +8,8 @@
 
 #include "packager/base/logging.h"
 #include "packager/media/base/common_pssh_generator.h"
-#include "packager/media/base/fairplay_pssh_generator.h"
 #include "packager/media/base/playready_pssh_generator.h"
+#include "packager/media/base/protection_system_ids.h"
 #include "packager/media/base/widevine_pssh_generator.h"
 #include "packager/status_macros.h"
 
@@ -30,7 +30,8 @@ KeySource::KeySource(int protection_systems_flags, FourCC protection_scheme) {
   }
 
   if (protection_systems_flags & FAIRPLAY_PROTECTION_SYSTEM_FLAG) {
-    pssh_generators_.emplace_back(new FairPlayPsshGenerator());
+    no_pssh_systems_.emplace_back(std::begin(kFairPlaySystemId),
+                                  std::end(kFairPlaySystemId));
   }
 }
 
@@ -60,6 +61,14 @@ Status KeySource::UpdateProtectionSystemInfo(
     }
   }
 
+  for (const auto& no_pssh_system : no_pssh_systems_) {
+    ProtectionSystemSpecificInfo info;
+    info.system_id = no_pssh_system;
+    for (const EncryptionKeyMap::value_type& pair : *encryption_key_map) {
+      pair.second->key_system_info.push_back(info);
+    }
+  }
+
   return Status::OK;
 }
 

packager/media/base/key_source.h

@@ -92,6 +92,7 @@ class KeySource {
 
  private:
   std::vector<std::unique_ptr<PsshGenerator>> pssh_generators_;
+  std::vector<std::vector<uint8_t>> no_pssh_systems_;
 
   DISALLOW_COPY_AND_ASSIGN(KeySource);
 };

packager/media/base/media_base.gyp

@@ -46,8 +46,6 @@
         'decryptor_source.cc',
         'decryptor_source.h',
         'encryption_config.h',
-        'fairplay_pssh_generator.cc',
-        'fairplay_pssh_generator.h',
         'fourccs.h',
         'http_key_fetcher.cc',
         'http_key_fetcher.h',

packager/media/formats/mp4/mp4_muxer.cc

@@ -268,10 +268,15 @@ Status MP4Muxer::DelayInitializeMuxer() {
     }
 
     if (stream->is_encrypted() && options().mp4_params.include_pssh_in_stream) {
+      moov->pssh.clear();
       const auto& key_system_info = stream->encryption_config().key_system_info;
-      moov->pssh.resize(key_system_info.size());
-      for (size_t j = 0; j < key_system_info.size(); j++)
-        moov->pssh[j].raw_box = key_system_info[j].psshs;
+      for (const ProtectionSystemSpecificInfo& system : key_system_info) {
+        if (system.psshs.empty())
+          continue;
+        ProtectionSystemSpecificHeader pssh;
+        pssh.raw_box = system.psshs;
+        moov->pssh.push_back(pssh);
+      }
     }
   }
 

packager/media/formats/mp4/segmenter.cc

@@ -278,11 +278,15 @@ void Segmenter::FinalizeFragmentForKeyRotation(
     bool fragment_encrypted,
     const EncryptionConfig& encryption_config) {
   if (options_.mp4_params.include_pssh_in_stream) {
-    const std::vector<ProtectionSystemSpecificInfo>& system_info =
-        encryption_config.key_system_info;
-    moof_->pssh.resize(system_info.size());
-    for (size_t i = 0; i < system_info.size(); i++)
-      moof_->pssh[i].raw_box = system_info[i].psshs;
+    moof_->pssh.clear();
+    const auto& key_system_info = encryption_config.key_system_info;
+    for (const ProtectionSystemSpecificInfo& system : key_system_info) {
+      if (system.psshs.empty())
+        continue;
+      ProtectionSystemSpecificHeader pssh;
+      pssh.raw_box = system.psshs;
+      moof_->pssh.push_back(pssh);
+    }
   } else {
     LOG(WARNING)
         << "Key rotation and no pssh in stream may not work well together.";

packager/mpd/base/mpd_utils.cc

@@ -352,7 +352,7 @@ void AddContentProtectionElementsHelperTemplated(
     if (entry.has_name_version())
       drm_content_protection.value = entry.name_version();
 
-    if (entry.has_pssh()) {
+    if (!entry.pssh().empty()) {
       std::string base64_encoded_pssh;
       base::Base64Encode(
           base::StringPiece(entry.pssh().data(), entry.pssh().size()),