Adding protobuf headers that will be used by upcoming continuous speech recognition classes (Speech CL2.2)

BUG=116954
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10384153

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@137454 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 67 insertions, 0 deletions

diff --git a/content/browser/speech/proto/google_streaming_api.proto b/content/browser/speech/proto/google_streaming_api.proto
new file mode 100644
index 0000000..fdfb8f0
--- /dev/null
+++ b/content/browser/speech/proto/google_streaming_api.proto
@@ -0,0 +1,47 @@
+// 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.
+
+syntax = "proto2";
+option optimize_for = LITE_RUNTIME;
+
+// TODO(primiano) Commented out due to compilation errors. What's its purpose?
+//option cc_api_version = 2;
+
+package speech;
+
+// Used for receiving results from the Google continuous speech recognition
+// webservice.
+message HttpStreamingResult {
+  // Used in case of errors.
+  // TODO(primiano) Not completely sure about its semantic. Ask gshires@.
+  optional int32 status = 1;
+
+  // TODO(primiano) this seems to be not used anymore. Ask gshires@.
+  optional int32 id = 2;
+
+  // Definitive results provide an array of hypotheses.
+  repeated HttpStreamingHypothesis hypotheses = 3;
+
+  // Non definitive results, instead, provide a provisional (read: likely to be
+  // confirmed) and an ephemeral (read: likely to be changed soon) string.
+  optional string provisional = 4;
+  optional string ephemeral = 5;
+
+  // TODO(primiano) this seems to be not used anymore. Ask gshires@.
+  optional string upstream_url = 6;
+
+  // Used by the webservice to acknowledge the successfull connection of the
+  // upstream (the one pushing audio data).
+  optional bool upstream_connected = 7;
+}
+
+// Part of a definitive result. See HttpStreamingResult.hypotheses array.
+message HttpStreamingHypothesis {
+  // Textual transcript of the hypothesis.
+  optional string utterance = 1;
+
+  // Confidence score associated with the hypothesis.
+  optional float confidence = 2;
+}
+
diff --git a/content/browser/speech/proto/speech_proto.gyp b/content/browser/speech/proto/speech_proto.gyp
new file mode 100644
index 0000000..f26021b
--- /dev/null
+++ b/content/browser/speech/proto/speech_proto.gyp
@@ -0,0 +1,19 @@
+# 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.
+
+{
+  'targets': [
+    {'target_name': 'speech_proto',
+     'type': 'static_library',
+     'sources': [
+        'google_streaming_api.proto',
+      ],
+     'variables': {
+        'proto_in_dir': '.',
+        'proto_out_dir': 'content/browser/speech/proto',
+      },
+     'includes': [ '../../../../build/protoc.gypi' ],
+    },
+  ],
+}
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index a31ab72..3ef8fff 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -5,6 +5,7 @@
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
+    'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',