Add PP_VideoFrame, PPB_VideoReader, and PPB_VideoWriter APIs to Pepper.

ppapi/cpp/video_reader.cc

Index: ppapi/cpp/video_reader.cc
diff --git a/ppapi/cpp/video_reader.cc b/ppapi/cpp/video_reader.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ac7fe79adf7daf04db30ecae4d5fce54c0165c4f
--- /dev/null
+++ b/ppapi/cpp/video_reader.cc
@@ -0,0 +1,74 @@
+// Copyright (c) 2013 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/cpp/video_reader.h"
+
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/ppb_video_reader.h"
+#include "ppapi/cpp/instance_handle.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/module_impl.h"
+#include "ppapi/cpp/var.h"
+#include "ppapi/cpp/video_frame.h"
+
+namespace pp {
+
+namespace {
+
+template <> const char* interface_name<PPB_VideoReader_0_1>() {
+  return PPB_VIDEOREADER_INTERFACE_0_1;
+}
+
+}  // namespace
+
+// VideoReader -----------------------------------------------------------------
+
+VideoReader::VideoReader() {
+}
+
+VideoReader::VideoReader(const InstanceHandle& instance) {
+  if (!has_interface<PPB_VideoReader_0_1>())
+    return;
+  PassRefFromConstructor(get_interface<PPB_VideoReader_0_1>()->Create(
+      instance.pp_instance()));
+}
+
+VideoReader::VideoReader(const VideoReader& other)
+    : Resource(other) {
+}
+
+VideoReader::VideoReader(PassRef, PP_Resource resource)
+    : Resource(PASS_REF, resource) {
+}
+
+int32_t VideoReader::Open(const std::string& stream_id,
+                          const CompletionCallback& cc) {
+  if (has_interface<PPB_VideoReader_0_1>()) {
+    Var id(stream_id);
+    int32_t result =
+        get_interface<PPB_VideoReader_0_1>()->Open(
+            pp_resource(),
+            id.pp_var(), cc.pp_completion_callback());
+    return result;
+  }
+  return cc.MayForce(PP_ERROR_NOINTERFACE);
+}
+
+int32_t VideoReader::GetFrame(
+    const CompletionCallbackWithOutput<VideoFrame>& cc) {
+  if (has_interface<PPB_VideoReader_0_1>()) {
+    return get_interface<PPB_VideoReader_0_1>()->GetFrame(
+        pp_resource(),
+        cc.output(), cc.pp_completion_callback());
+  }
+  return cc.MayForce(PP_ERROR_NOINTERFACE);
+}
+
+void VideoReader::Close() {
+  if (has_interface<PPB_VideoReader_0_1>()) {
+    get_interface<PPB_VideoReader_0_1>()->Close(pp_resource());
+  }
+}
+
+}  // namespace pp