Add Chromium-side changes for MediaSource::isTypeSupported()

webkit/glue/simple_webmimeregistry_impl.cc

 // Copyright (c) 2012 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 "webkit/glue/simple_webmimeregistry_impl.h"
 
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
+#include "media/filters/stream_parser_factory.h"
 #include "net/base/mime_util.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebString.h"
 #include "webkit/base/file_path_string_conversions.h"
 #include "webkit/media/crypto/key_systems.h"
 
 using WebKit::WebString;
 using WebKit::WebMimeRegistry;
 
 namespace {
 
@@ skipping 79 matching lines @@
   // If we don't recognize the codec, it's possible we support it.
   std::vector<std::string> parsed_codecs;
   net::ParseCodecString(ToASCIIOrEmpty(codecs), &parsed_codecs, true);
   if (!net::AreSupportedMediaCodecs(parsed_codecs))
     return MayBeSupported;
 
   // Otherwise we have a perfect match.
   return IsSupported;
 }
 
+bool SimpleWebMimeRegistryImpl::supportsMediaSourceMIMEType(
+    const WebKit::WebString& mime_type,
+    const WebString& codecs) {
+  const std::string mime_type_ascii = ToASCIIOrEmpty(mime_type);
+  std::vector<std::string> parsed_codec_ids;
+  net::ParseCodecString(ToASCIIOrEmpty(codecs), &parsed_codec_ids, false);
+  if (mime_type_ascii.empty() || parsed_codec_ids.size() == 0)
+    return false;
+  return media::StreamParserFactory::IsTypeSupported(
+      mime_type_ascii, parsed_codec_ids);
+}
+
 WebMimeRegistry::SupportsType
     SimpleWebMimeRegistryImpl::supportsNonImageMIMEType(
     const WebString& mime_type) {
   return net::IsSupportedNonImageMimeType(ToASCIIOrEmpty(mime_type)) ?
       WebMimeRegistry::IsSupported : WebMimeRegistry::IsNotSupported;
 }
 
 WebString SimpleWebMimeRegistryImpl::mimeTypeForExtension(
     const WebString& file_extension) {
   std::string mime_type;
@@ skipping 20 matching lines @@
 
 WebString SimpleWebMimeRegistryImpl::preferredExtensionForMIMEType(
     const WebString& mime_type) {
   base::FilePath::StringType file_extension;
   net::GetPreferredExtensionForMimeType(ToASCIIOrEmpty(mime_type),
                                         &file_extension);
   return webkit_base::FilePathStringToWebString(file_extension);
 }
 
 }  // namespace webkit_glue