[PPAPI][MediaStream] Support configure for video input.

ppapi/proxy/ppapi_param_traits.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 "ppapi/proxy/ppapi_param_traits.h"
 
 #include <string.h>  // For memcpy
 
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 615 matching lines @@
     // No default so the compiler will warn on new types.
   }
   return false;
 }
 
 // static
 void ParamTraits<ppapi::SocketOptionData>::Log(const param_type& p,
                                                std::string* l) {
 }
 
+// ppapi::MediaStreamVideoTrack::Attributes ------------------------------------
+
+// static
+void ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Write(
+    Message* m,
+    const param_type& p) {
+  ParamTraits<uint32_t>::Write(m, p.mask);
+  ParamTraits<int32_t>::Write(m, p.buffers);
+  ParamTraits<int32_t>::Write(m, p.width);
+  ParamTraits<int32_t>::Write(m, p.height);
+  ParamTraits<int32_t>::Write(m, static_cast<int32_t>(p.format));
+}
+
+// static
+bool ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Read(
+    const Message* m,
+    PickleIterator* iter,
+    param_type* r) {
+  if (!ParamTraits<uint32_t>::Read(m, iter, &(r->mask)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->buffers)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->width)))
+    return false;
+  if (!ParamTraits<int32_t>::Read(m, iter, &(r->height)))
+    return false;
+  int32_t value = 0;
+  if (!ParamTraits<int32_t>::Read(m, iter, &value))
+    return false;
+  r->format = static_cast<PP_VideoFrame_Format>(value);

[yzshen1, 2014/02/13 19:23:26]

This is not safe, you might get an invalid value if the message is from a
compromised plugin process.

[Peng, 2014/02/13 21:28:34]

Done.

+  return true;
+}
+
+// static
+void ParamTraits<ppapi::MediaStreamVideoTrackShared::Attributes>::Log(
+    const param_type& p,
+    std::string* l) {
+}
 }  // namespace IPC