Update MpdGenerator to allow inject version for testing

- Add command line flag --test_packager_version to inject packager
  version; packager_main.cc is also updated to use the same flag.
- Also add a MpdGenerator test in packager_test.py.

Change-Id: I9a11a0ee5502ba30a8acc4d44ebbfaabbe0f2f6e

packager/app/mpd_generator.cc

@@ -24,6 +24,9 @@
 #endif  // defined(OS_WIN)
 
 DEFINE_bool(licenses, false, "Dump licenses.");
+DEFINE_string(test_packager_version,
+              "",
+              "Packager version for testing. Should be used for testing only.");
 
 namespace shaka {
 namespace {
@@ -117,6 +120,9 @@ int MpdMain(int argc, char** argv) {
     return status;
   }
 
+  if (!FLAGS_test_packager_version.empty())
+    SetPackagerVersionForTesting(FLAGS_test_packager_version);
+
   return RunMpdGenerator();
 }
 

packager/app/packager_main.cc

@@ -44,15 +44,9 @@ DEFINE_bool(use_fake_clock_for_muxer,
             "Set to true to use a fake clock for muxer. With this flag set, "
             "creation time and modification time in outputs are set to 0. "
             "Should only be used for testing.");
-DEFINE_bool(override_version,
-            false,
-            "Override packager version in the generated outputs with "
-            "--test_version if it is set to true. Should be used for "
-            "testing only.");
-DEFINE_string(test_version,
+DEFINE_string(test_packager_version,
               "",
-              "Packager version for testing. Ignored if --override_version is "
-              "false. Should be used for testing only.");
+              "Packager version for testing. Should be used for testing only.");
 
 namespace shaka {
 namespace {
@@ -441,8 +435,8 @@ base::Optional<PackagingParams> GetPackagingParams() {
   TestParams& test_params = packaging_params.test_params;
   test_params.dump_stream_info = FLAGS_dump_stream_info;
   test_params.inject_fake_clock = FLAGS_use_fake_clock_for_muxer;
-  if (FLAGS_override_version)
-    test_params.injected_library_version = FLAGS_test_version;
+  if (!FLAGS_test_packager_version.empty())
+    test_params.injected_library_version = FLAGS_test_packager_version;
 
   return packaging_params;
 }

packager/app/test/packager_app.py

@@ -5,7 +5,7 @@
 # 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
-"""Test wrapper for the sample packager binary."""
+"""Test wrapper for the sample packager binaries."""
 
 import os
 import platform
@@ -15,19 +15,25 @@ import test_env
 
 
 class PackagerApp(object):
-  """Main integration class for testing the packager binary."""
+  """Main integration class for testing the packager binaries."""
 
   def __init__(self):
-    packager_name = 'packager'
-    if platform.system() == 'Windows':
-      packager_name += '.exe'
-    self.binary = os.path.join(test_env.SCRIPT_DIR, packager_name)
+    self.packager_binary = os.path.join(test_env.SCRIPT_DIR,
+                                        self._GetBinaryName('packager'))
+    self.mpd_generator_binary = os.path.join(
+        test_env.SCRIPT_DIR, self._GetBinaryName('mpd_generator'))
     # Set this to empty for now in case GetCommandLine() is called before
     # Package().
     self.packaging_command_line = ''
-    assert os.path.exists(self.binary), ('Please run from output directory, '
+    assert os.path.exists(
+        self.packager_binary), ('Please run from output directory, '
                                 'e.g. out/Debug/packager_test.py')
 
+  def _GetBinaryName(self, name):
+    if platform.system() == 'Windows':
+      name += '.exe'
+    return name
+
   def GetEnv(self):
     env = os.environ.copy()
     if (platform.system() == 'Darwin' and
@@ -37,18 +43,18 @@ class PackagerApp(object):
 
   def DumpStreamInfo(self, stream):
     input_str = 'input=%s' % stream
-    cmd = [self.binary, input_str, '--dump_stream_info']
+    cmd = [self.packager_binary, input_str, '--dump_stream_info']
     return subprocess.check_output(cmd, env=self.GetEnv())
 
   def Version(self):
     return subprocess.check_output(
-        [self.binary, '--version'], env=self.GetEnv())
+        [self.packager_binary, '--version'], env=self.GetEnv())
 
   def Package(self, streams, flags=None):
     """Executes packager command."""
     if flags is None:
       flags = []
-    cmd = [self.binary]
+    cmd = [self.packager_binary]
     cmd.extend(streams)
     cmd.extend(flags)
 
@@ -67,3 +73,15 @@ class PackagerApp(object):
 
   def GetCommandLine(self):
     return self.packaging_command_line
+
+  def MpdGenerator(self, flags):
+    """Executes MPD Generator command."""
+    cmd = [self.mpd_generator_binary]
+    cmd.extend(flags)
+
+    if test_env.options.v:
+      cmd.extend(['--v=%s' % test_env.options.v])
+    if test_env.options.vmodule:
+      cmd.extend(['--vmodule="%s"' % test_env.options.vmodule])
+
+    return subprocess.call(cmd, env=self.GetEnv())

packager/app/test/packager_test.py

@@ -378,7 +378,7 @@ class PackagerAppTest(unittest.TestCase):
       flags.append('--use_fake_clock_for_muxer')
 
     # Override packager version string for testing.
-    flags += ['--override_version', '--test_version', '<tag>-<hash>-<test>']
+    flags += ['--test_packager_version', '<tag>-<hash>-<test>']
     return flags
 
   def _CompareWithGold(self, test_output, golden_file_name):
@@ -519,6 +519,14 @@ class PackagerFunctionalTest(PackagerAppTest):
   def assertPackageSuccess(self, streams, flags=None):
     self.assertEqual(self.packager.Package(streams, flags), 0)
 
+  def assertMpdGeneratorSuccess(self):
+    media_infos = glob.glob(os.path.join(self.tmp_dir, '*.media_info'))
+    self.assertTrue(media_infos)
+
+    flags = ['--input', ','.join(media_infos), '--output', self.mpd_output]
+    flags += ['--test_packager_version', '<tag>-<hash>-<test>']
+    self.assertEqual(self.packager.MpdGenerator(flags), 0)
+
   def testVersion(self):
     self.assertRegexpMatches(
         self.packager.Version(), '^packager(.exe)? version '
@@ -1278,6 +1286,16 @@ class PackagerFunctionalTest(PackagerAppTest):
         self._GetFlags(encryption=True, output_media_info=True))
     self._CheckTestResults('encryption-and-output-media-info')
 
+  def testEncryptionAndOutputMediaInfoAndMpdFromMediaInfo(self):
+    self.assertPackageSuccess(
+        # The order is not determinstic if there are more than one
+        # AdaptationSets, so only one is included here.
+        self._GetStreams(['video']),
+        self._GetFlags(encryption=True, output_media_info=True))
+    self.assertMpdGeneratorSuccess()
+    self._CheckTestResults(
+        'encryption-and-output-media-info-and-mpd-from-media-info')
+
   def testHlsSingleSegmentMp4Encrypted(self):
     self.assertPackageSuccess(
         self._GetStreams(['audio', 'video'], hls=True),

packager/app/test/testdata/encryption-and-output-media-info-and-mpd-from-media-info/bear-640x360-video.mp4.media_info

@@ -0,0 +1,31 @@
+bandwidth: 977743
+video_info {
+  codec: "avc1.64001e"
+  width: 640
+  height: 360
+  time_scale: 30000
+  frame_duration: 1001
+  decoder_config: "\001d\000\036\377\341\000\031gd\000\036\254\331@\240/\371p\021\000\000\003\003\351\000\000\352`\017\026-\226\001\000\006h\353\343\313\"\300"
+  pixel_width: 1
+  pixel_height: 1
+}
+init_range {
+  begin: 0
+  end: 1090
+}
+index_range {
+  begin: 1091
+  end: 1158
+}
+media_file_name: "bear-640x360-video.mp4"
+media_duration_seconds: 2.73606658
+reference_time_scale: 30000
+container_type: CONTAINER_MP4
+protected_content {
+  default_key_id: "1234567890123456"
+  content_protection_entry {
+    uuid: "1077efec-c0b2-4d02-ace3-3c1e52e2fb4b"
+    pssh: "\000\000\0004pssh\001\000\000\000\020w\357\354\300\262M\002\254\343<\036R\342\373K\000\000\000\0011234567890123456\000\000\000\000"
+  }
+  protection_scheme: "cenc"
+}

packager/app/test/testdata/encryption-and-output-media-info-and-mpd-from-media-info/output.mpd

@@ -0,0 +1,18 @@
+<?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="PT0S">
+  <Period id="0">
+    <AdaptationSet id="0" contentType="video" width="640" height="360" frameRate="30000/1001" par="16:9">
+      <Representation id="0" bandwidth="977743" codecs="avc1.64001e" mimeType="video/mp4" sar="1:1">
+        <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="31323334-3536-3738-3930-313233343536"/>
+        <ContentProtection schemeIdUri="urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b">
+          <cenc:pssh>AAAANHBzc2gBAAAAEHfv7MCyTQKs4zweUuL7SwAAAAExMjM0NTY3ODkwMTIzNDU2AAAAAA==</cenc:pssh>
+        </ContentProtection>
+        <BaseURL>bear-640x360-video.mp4</BaseURL>
+        <SegmentBase indexRange="1091-1158" timescale="30000">
+          <Initialization range="0-1090"/>
+        </SegmentBase>
+      </Representation>
+    </AdaptationSet>
+  </Period>
+</MPD>