Support (E)AC3 passthrough

media/base/android/media_codec_util.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/android/media_codec_util.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 13 matching lines @@
 using base::android::JavaIntArrayToIntVector;
 using base::android::ScopedJavaLocalRef;
 
 namespace media {
 
 namespace {
 
 const char kMp4aMimeType[] = "audio/mp4a-latm";
 const char kOpusMimeType[] = "audio/opus";
 const char kVorbisMimeType[] = "audio/vorbis";
+const char kAc3MimeType[] = "audio/ac3";
+const char kEac3MimeType[] = "audio/eac3";
 const char kAvcMimeType[] = "video/avc";
 const char kHevcMimeType[] = "video/hevc";
 const char kVp8MimeType[] = "video/x-vnd.on2.vp8";
 const char kVp9MimeType[] = "video/x-vnd.on2.vp9";
 
 }  // namespace
 
 static std::string CodecTypeToAndroidMimeType(const std::string& codec) {
   // TODO(xhwang): Shall we handle more detailed strings like "mp4a.40.2"?
   if (codec == "avc1")
     return kAvcMimeType;
   if (codec == "hvc1")
     return kHevcMimeType;
   if (codec == "mp4a")
     return kMp4aMimeType;
   if (codec == "vp8" || codec == "vp8.0")
     return kVp8MimeType;
   if (codec == "vp9" || codec == "vp9.0")
     return kVp9MimeType;
   if (codec == "vorbis")
     return kVorbisMimeType;
   if (codec == "opus")
     return kOpusMimeType;
+  if (codec == "ac3")
+    return kAc3MimeType;
+  if (codec == "eac3")
+    return kEac3MimeType;
+
   DLOG(WARNING) << "Cannot convert codec to Android MIME type: " << codec;
   return std::string();
 }
 
 static bool IsSupportedAndroidMimeType(const std::string& mime_type) {
   std::vector<std::string> supported{
       kMp4aMimeType, kOpusMimeType, kVorbisMimeType, kAvcMimeType,
       kHevcMimeType, kVp8MimeType,  kVp9MimeType};
   return std::find(supported.begin(), supported.end(), mime_type) !=
          supported.end();
@@ skipping 191 matching lines @@
          (sdk_int == 18 && ("OMX.SEC.avc.dec" == codec_name ||
                             "OMX.SEC.avc.dec.secure" == codec_name)) ||
          (sdk_int == 19 &&
           base::StartsWith(base::android::BuildInfo::GetInstance()->model(),
                            "SM-G800", base::CompareCase::INSENSITIVE_ASCII) &&
           ("OMX.Exynos.avc.dec" == codec_name ||
            "OMX.Exynos.avc.dec.secure" == codec_name));
 }
 
 }  // namespace media