C++ wrappers for PPB_VideoCapture_Dev

ppapi/cpp/dev/video_capture_client_dev.cc

+// Copyright (c) 2011 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/dev/video_capture_client_dev.h"
+
+#include "ppapi/c/dev/ppp_video_capture_dev.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+
+namespace pp {
+
+namespace {
+
+const char kPPPVideoCaptureInterface[] = PPP_VIDEO_CAPTURE_DEV_INTERFACE;
+
+void OnDeviceInfo(PP_Instance instance,
+                  PP_Resource resource,
+                  const struct PP_VideoCaptureDeviceInfo_Dev* info,
+                  uint32_t buffer_count,
+                  const PP_Resource* buffers) {
+  VideoCaptureClient_Dev* client = static_cast<VideoCaptureClient_Dev*>(
+      Instance::GetPerInstanceObject(instance, kPPPVideoCaptureInterface));

[brettw, 2011/08/08 22:46:31]

I'd normally expect client to be checked right after it's retrieved rather than
doing a bunch of stuff and then checking it later. So I'd probably early return
on !client.

[piman, 2011/08/09 02:44:36]

Done.

+
+  std::vector<Buffer_Dev> buffer_list;
+  buffer_list.reserve(buffer_count);
+  for (uint32_t i = 0; i<buffer_count; ++i)

[brettw, 2011/08/08 22:46:31]

Style nit: spaces around <

[piman, 2011/08/09 02:44:36]

Done.

+    buffer_list.push_back(Buffer_Dev(buffers[i]));
+
+  if (client)
+    client->OnDeviceInfo(resource, *info, buffer_list);
+}
+
+void OnStatus(PP_Instance instance, PP_Resource resource, uint32_t status) {
+  VideoCaptureClient_Dev* client = static_cast<VideoCaptureClient_Dev*>(
+      Instance::GetPerInstanceObject(instance, kPPPVideoCaptureInterface));
+  if (client)
+    client->OnStatus(resource, status);
+}
+
+void OnError(PP_Instance instance, PP_Resource resource, uint32_t error_code) {
+  VideoCaptureClient_Dev* client = static_cast<VideoCaptureClient_Dev*>(
+      Instance::GetPerInstanceObject(instance, kPPPVideoCaptureInterface));
+  if (client)
+    client->OnError(resource, error_code);
+}
+
+void OnBufferReady(PP_Instance instance,
+                   PP_Resource resource,
+                   uint32_t buffer) {
+  VideoCaptureClient_Dev* client = static_cast<VideoCaptureClient_Dev*>(
+      Instance::GetPerInstanceObject(instance, kPPPVideoCaptureInterface));
+  if (client)
+    client->OnBufferReady(resource, buffer);
+}
+
+PPP_VideoCapture_Dev ppp_video_capture = {
+  OnDeviceInfo,
+  OnStatus,
+  OnError,
+  OnBufferReady
+};
+
+}  // namespace
+
+VideoCaptureClient_Dev::VideoCaptureClient_Dev(Instance* instance)
+    : instance_(instance) {
+  pp::Module::Get()->AddPluginInterface(kPPPVideoCaptureInterface,
+                                        &ppp_video_capture);
+  instance_->AddPerInstanceObject(kPPPVideoCaptureInterface, this);
+}
+
+VideoCaptureClient_Dev::~VideoCaptureClient_Dev() {
+  instance_->RemovePerInstanceObject(kPPPVideoCaptureInterface, this);
+}
+
+}  // namespace pp