media config: expand is_encrypted to a struct.

media/formats/mp4/mp4_stream_parser.cc

Index: media/formats/mp4/mp4_stream_parser.cc
diff --git a/media/formats/mp4/mp4_stream_parser.cc b/media/formats/mp4/mp4_stream_parser.cc
index 7becdf941019ffca0378baf9e08a9702957f35cc..b53802d3ce7d5892232c15fe752e63be100b729e 100644
--- a/media/formats/mp4/mp4_stream_parser.cc
+++ b/media/formats/mp4/mp4_stream_parser.cc
@@ -14,6 +14,8 @@
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "media/base/audio_decoder_config.h"
+#include "media/base/encryption_scheme.h"
+#include "media/base/media_util.h"
 #include "media/base/stream_parser_buffer.h"
 #include "media/base/text_track_config.h"
 #include "media/base/timestamp_constants.h"
@@ -301,9 +303,12 @@ bool MP4StreamParser::ParseMoov(BoxReader* reader) {
 
       is_audio_track_encrypted_ = entry.sinf.info.track_encryption.is_encrypted;
       DVLOG(1) << "is_audio_track_encrypted_: " << is_audio_track_encrypted_;
+      EncryptionScheme encryption_scheme(
+          is_audio_track_encrypted_ ? EncryptionScheme::kCipherModeAesCtr
+                                    : EncryptionScheme::kCipherModeUnencrypted);
       audio_config.Initialize(codec, sample_format, channel_layout,
-                              sample_per_second, extra_data,
-                              is_audio_track_encrypted_, base::TimeDelta(), 0);
+                              sample_per_second, extra_data, encryption_scheme,
+                              base::TimeDelta(), 0);
       has_audio_ = true;
       audio_track_id_ = track->header.track_id;
     }
@@ -339,12 +344,15 @@ bool MP4StreamParser::ParseMoov(BoxReader* reader) {
 
       is_video_track_encrypted_ = entry.sinf.info.track_encryption.is_encrypted;
       DVLOG(1) << "is_video_track_encrypted_: " << is_video_track_encrypted_;
-      video_config.Initialize(
-          entry.video_codec, entry.video_codec_profile, PIXEL_FORMAT_YV12,
-          COLOR_SPACE_HD_REC709, coded_size, visible_rect, natural_size,
-          // No decoder-specific buffer needed for AVC;
-          // SPS/PPS are embedded in the video stream
-          std::vector<uint8_t>(), is_video_track_encrypted_);
+      EncryptionScheme scheme(is_video_track_encrypted_
+                                  ? EncryptionScheme::kCipherModeAesCtr
+                                  : EncryptionScheme::kCipherModeUnencrypted);
+      video_config.Initialize(entry.video_codec, entry.video_codec_profile,
+                              PIXEL_FORMAT_YV12, COLOR_SPACE_HD_REC709,
+                              coded_size, visible_rect, natural_size,
+                              // No decoder-specific buffer needed for AVC;
+                              // SPS/PPS are embedded in the video stream
+                              EmptyExtraData(), scheme);
       has_video_ = true;
       video_track_id_ = track->header.track_id;
     }