Index: content/renderer/media/media_stream_constraints_util.cc |
diff --git a/content/renderer/media/media_stream_constraints_util.cc b/content/renderer/media/media_stream_constraints_util.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..de1856e28ecee52ab715ed6bd9f667abb348d2f4 |
--- /dev/null |
+++ b/content/renderer/media/media_stream_constraints_util.cc |
@@ -0,0 +1,107 @@ |
+// Copyright 2014 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 "content/renderer/media/media_stream_constraints_util.h" |
+ |
+#include "base/strings/string_number_conversions.h" |
+#include "base/strings/utf_string_conversions.h" |
+#include "third_party/WebKit/public/platform/WebMediaConstraints.h" |
+#include "third_party/WebKit/public/platform/WebString.h" |
+ |
+namespace content { |
+ |
+namespace { |
+ |
+// Convert a string ("true", "false") to a boolean. |
+bool ConvertStringToBoolean(const std::string& string, bool* value) { |
+ static const char kValueTrue[] = "true"; |
+ static const char kValueFalse[] = "false"; |
+ |
+ *value = (string == kValueTrue); |
+ return *value || (string == kValueFalse); |
+} |
+ |
+} // namespace |
+ |
+bool GetConstraintValueAsBoolean(const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ bool* value) { |
+ return GetMandatoryConstraintValueAsBoolean(constraints, key, value) || |
+ GetOptionalConstraintValueAsBoolean(constraints, key, value); |
+} |
+ |
+bool GetConstraintValueAsInteger(const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ int* value) { |
+ return GetMandatoryConstraintValueAsInteger(constraints, key, value) || |
+ GetOptionalConstraintValueAsInteger(constraints, key, value); |
+} |
+ |
+bool GetConstraintValueAsString(const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ std::string* value) { |
+ blink::WebString value_str; |
+ base::string16 key_16 = base::UTF8ToUTF16(key); |
+ if (!constraints.getMandatoryConstraintValue(key_16, value_str) && |
+ !constraints.getOptionalConstraintValue(key_16, value_str)) { |
+ return false; |
+ } |
+ |
+ *value = value_str.utf8(); |
+ return true; |
+} |
+ |
+bool GetMandatoryConstraintValueAsBoolean( |
+ const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ bool* value) { |
+ blink::WebString value_str; |
+ if (!constraints.getMandatoryConstraintValue(base::UTF8ToUTF16(key), |
+ value_str)) { |
+ return false; |
+ } |
+ |
+ return ConvertStringToBoolean(value_str.utf8(), value); |
+} |
+ |
+bool GetMandatoryConstraintValueAsInteger( |
+ const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ int* value) { |
+ blink::WebString value_str; |
+ if (!constraints.getMandatoryConstraintValue(base::UTF8ToUTF16(key), |
+ value_str)) { |
+ return false; |
+ } |
+ |
+ return base::StringToInt(value_str.utf8(), value); |
+} |
+ |
+bool GetOptionalConstraintValueAsBoolean( |
+ const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ bool* value) { |
+ blink::WebString value_str; |
+ if (!constraints.getOptionalConstraintValue(base::UTF8ToUTF16(key), |
+ value_str)) { |
+ return false; |
+ } |
+ |
+ return ConvertStringToBoolean(value_str.utf8(), value); |
+} |
+ |
+bool GetOptionalConstraintValueAsInteger( |
+ const blink::WebMediaConstraints& constraints, |
+ const std::string& key, |
+ int* value) { |
+ blink::WebString value_str; |
+ if (!constraints.getOptionalConstraintValue(base::UTF8ToUTF16(key), |
+ value_str)) { |
+ return false; |
+ } |
+ |
+ return base::StringToInt(value_str.utf8(), value); |
+} |
+ |
+} // namespace content |