PPB/PPP_VideoCapture_Dev proxy

BUG=None
TEST=VideoCapture sample (in a later CL)


Review URL: http://codereview.chromium.org/7601005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95961 0039d316-1c4b-4281-b951-d872f2087c98

10 files changed, 607 insertions, 3 deletions

diff --git a/ppapi/ppapi_proxy.gypi b/ppapi/ppapi_proxy.gypi
index 49e392d..c354980 100644
--- a/ppapi/ppapi_proxy.gypi
+++ b/ppapi/ppapi_proxy.gypi
@@ -126,6 +126,8 @@
         'proxy/ppb_var_deprecated_proxy.h',
         'proxy/ppb_var_proxy.cc',
         'proxy/ppb_var_proxy.h',
+        'proxy/ppb_video_capture_proxy.cc',
+        'proxy/ppb_video_capture_proxy.h',
         'proxy/ppb_video_decoder_proxy.cc',
         'proxy/ppb_video_decoder_proxy.h',
         'proxy/ppp_class_proxy.cc',
diff --git a/ppapi/proxy/dispatcher.cc b/ppapi/proxy/dispatcher.cc
index a1c9974..f8cc5b9 100644
--- a/ppapi/proxy/dispatcher.cc
+++ b/ppapi/proxy/dispatcher.cc
@@ -80,6 +80,7 @@
 #include "ppapi/proxy/ppb_url_util_proxy.h"
 #include "ppapi/proxy/ppb_var_deprecated_proxy.h"
 #include "ppapi/proxy/ppb_var_proxy.h"
+#include "ppapi/proxy/ppb_video_capture_proxy.h"
 #include "ppapi/proxy/ppb_video_decoder_proxy.h"
 #include "ppapi/proxy/ppp_class_proxy.h"
 #include "ppapi/proxy/ppp_graphics_3d_proxy.h"
@@ -164,6 +165,7 @@ InterfaceList::InterfaceList() {
   AddPPB(PPB_URLUtil_Proxy::GetInfo());
   AddPPB(PPB_Var_Deprecated_Proxy::GetInfo());
   AddPPB(PPB_Var_Proxy::GetInfo());
+  AddPPB(PPB_VideoCapture_Proxy::GetInfo());
   AddPPB(PPB_VideoDecoder_Proxy::GetInfo());
 
 #ifdef ENABLE_FLAPPER_HACKS
@@ -176,6 +178,7 @@ InterfaceList::InterfaceList() {
   AddPPP(PPP_Instance_Private_Proxy::GetInfo());
   AddPPP(PPP_Instance_Proxy::GetInfo1_0());
   AddPPP(PPP_Messaging_Proxy::GetInfo());
+  AddPPP(PPP_VideoCapture_Proxy::GetInfo());
   AddPPP(PPP_VideoDecoder_Proxy::GetInfo());
 }
 
diff --git a/ppapi/proxy/plugin_resource.h b/ppapi/proxy/plugin_resource.h
index a0675d3..3abe9cb 100644
--- a/ppapi/proxy/plugin_resource.h
+++ b/ppapi/proxy/plugin_resource.h
@@ -34,6 +34,7 @@
   F(URLLoader) \
   F(URLRequestInfo) \
   F(URLResponseInfo) \
+  F(VideoCapture) \
   F(VideoDecoder)
 
 namespace pp {
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index b039878..0556304 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -18,6 +18,7 @@
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_platform_file.h"
+#include "ppapi/c/dev/pp_video_capture_dev.h"
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_file_info.h"
 #include "ppapi/c/pp_instance.h"
@@ -71,6 +72,18 @@ IPC_STRUCT_TRAITS_BEGIN(PP_Picture_Dev)
   IPC_STRUCT_TRAITS_MEMBER(bitstream_buffer_id)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(PP_VideoCaptureDeviceInfo_Dev)
+  IPC_STRUCT_TRAITS_MEMBER(width)
+  IPC_STRUCT_TRAITS_MEMBER(height)
+  IPC_STRUCT_TRAITS_MEMBER(frames_per_second)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(pp::proxy::PPPVideoCapture_Buffer)
+  IPC_STRUCT_TRAITS_MEMBER(resource)
+  IPC_STRUCT_TRAITS_MEMBER(handle)
+  IPC_STRUCT_TRAITS_MEMBER(size)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(::ppapi::Preferences)
   IPC_STRUCT_TRAITS_MEMBER(standard_font_family)
   IPC_STRUCT_TRAITS_MEMBER(fixed_font_family)
@@ -330,6 +343,22 @@ IPC_MESSAGE_ROUTED3(PpapiMsg_PPBURLLoader_ReadResponseBody_Ack,
                     int32 /* result */,
                     std::string /* data */)
 
+// PPP_VideoCapture_Dev
+IPC_MESSAGE_ROUTED3(
+    PpapiMsg_PPPVideoCapture_OnDeviceInfo,
+    pp::proxy::HostResource /* video_capture */,
+    PP_VideoCaptureDeviceInfo_Dev /* info */,
+    std::vector<pp::proxy::PPPVideoCapture_Buffer> /* buffers */)
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPPVideoCapture_OnStatus,
+                    pp::proxy::HostResource /* video_capture */,
+                    uint32_t /* status */)
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPPVideoCapture_OnError,
+                    pp::proxy::HostResource /* video_capture */,
+                    uint32_t /* error_code */)
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPPVideoCapture_OnBufferReady,
+                    pp::proxy::HostResource /* video_capture */,
+                    uint32_t /* buffer */)
+
 // PPB_VideoDecoder_Dev.
 // (Messages from renderer to plugin to notify it to run callbacks.)
 IPC_MESSAGE_ROUTED3(PpapiMsg_PPBVideoDecoder_EndOfBitstreamACK,
@@ -945,6 +974,21 @@ IPC_SYNC_MESSAGE_ROUTED4_3(PpapiHostMsg_ResourceCreation_ImageData,
                            pp::proxy::HostResource /* result_resource */,
                            std::string /* image_data_desc */,
                            pp::proxy::ImageHandle /* result */)
+
+// PPB_VideoCapture_Dev.
+IPC_SYNC_MESSAGE_ROUTED1_1(PpapiHostMsg_PPBVideoCapture_Create,
+                           PP_Instance /* instance */,
+                           pp::proxy::HostResource /* result */)
+IPC_MESSAGE_ROUTED3(PpapiHostMsg_PPBVideoCapture_StartCapture,
+                    pp::proxy::HostResource /* video_capture */,
+                    PP_VideoCaptureDeviceInfo_Dev /* requested_info */,
+                    uint32_t /* buffer_count */)
+IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBVideoCapture_ReuseBuffer,
+                    pp::proxy::HostResource /* video_capture */,
+                    uint32_t /* buffer */)
+IPC_MESSAGE_ROUTED1(PpapiHostMsg_PPBVideoCapture_StopCapture,
+                    pp::proxy::HostResource /* video_capture */)
+
 // PPB_VideoDecoder.
 IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBVideoDecoder_Create,
                            PP_Instance /* instance */,
diff --git a/ppapi/proxy/ppb_buffer_proxy.cc b/ppapi/proxy/ppb_buffer_proxy.cc
index 2e782ac..19442ea9 100644
--- a/ppapi/proxy/ppb_buffer_proxy.cc
+++ b/ppapi/proxy/ppb_buffer_proxy.cc
@@ -108,7 +108,15 @@ PP_Resource PPB_Buffer_Proxy::CreateProxyResource(PP_Instance instance,
   if (result.is_null() || !base::SharedMemory::IsHandleValid(shm_handle))
     return 0;
 
-  linked_ptr<Buffer> object(new Buffer(result, shm_handle, size));
+  return AddProxyResource(result, shm_handle, size);
+}
+
+// static
+PP_Resource PPB_Buffer_Proxy::AddProxyResource(
+    const HostResource& resource,
+    base::SharedMemoryHandle shm_handle,
+    uint32_t size) {
+  linked_ptr<Buffer> object(new Buffer(resource, shm_handle, size));
   return PluginResourceTracker::GetInstance()->AddResource(object);
 }
 
diff --git a/ppapi/proxy/ppb_buffer_proxy.h b/ppapi/proxy/ppb_buffer_proxy.h
index e11b94f..552d422 100644
--- a/ppapi/proxy/ppb_buffer_proxy.h
+++ b/ppapi/proxy/ppb_buffer_proxy.h
@@ -56,6 +56,9 @@ class PPB_Buffer_Proxy : public InterfaceProxy {
 
   static PP_Resource CreateProxyResource(PP_Instance instance,
                                          uint32_t size);
+  static PP_Resource AddProxyResource(const HostResource& resource,
+                                      base::SharedMemoryHandle shm_handle,
+                                      uint32_t size);
 
   const PPB_Buffer_Dev* ppb_buffer_target() const {
     return static_cast<const PPB_Buffer_Dev*>(target_interface());
diff --git a/ppapi/proxy/ppb_video_capture_proxy.cc b/ppapi/proxy/ppb_video_capture_proxy.cc
new file mode 100644
index 0000000..dc253d1
--- /dev/null
+++ b/ppapi/proxy/ppb_video_capture_proxy.cc
@@ -0,0 +1,459 @@
+// 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/proxy/ppb_video_capture_proxy.h"
+
+#include <vector>
+
+#include "base/logging.h"
+#include "build/build_config.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/ppb_core.h"
+#include "ppapi/c/dev/ppb_video_capture_dev.h"
+#include "ppapi/c/dev/ppp_video_capture_dev.h"
+#include "ppapi/proxy/enter_proxy.h"
+#include "ppapi/proxy/host_dispatcher.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/proxy/ppb_buffer_proxy.h"
+#include "ppapi/thunk/ppb_buffer_api.h"
+#include "ppapi/thunk/ppb_buffer_trusted_api.h"
+#include "ppapi/thunk/ppb_video_capture_api.h"
+#include "ppapi/thunk/thunk.h"
+
+using ppapi::thunk::EnterResourceNoLock;
+using ppapi::thunk::PPB_Buffer_API;
+using ppapi::thunk::PPB_BufferTrusted_API;
+using ppapi::thunk::PPB_VideoCapture_API;
+
+namespace pp {
+namespace proxy {
+
+namespace {
+
+InterfaceProxy* CreatePPBVideoCaptureProxy(Dispatcher* dispatcher,
+                                           const void* target_interface) {
+  return new PPB_VideoCapture_Proxy(dispatcher, target_interface);
+}
+
+InterfaceProxy* CreatePPPVideoCaptureProxy(Dispatcher* dispatcher,
+                                           const void* target_interface) {
+  return new PPP_VideoCapture_Proxy(dispatcher, target_interface);
+}
+
+void OnDeviceInfo(PP_Instance instance,
+                  PP_Resource resource,
+                  const PP_VideoCaptureDeviceInfo_Dev* info,
+                  uint32_t buffer_count,
+                  const PP_Resource* resources) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+  HostResource host_resource;
+  host_resource.SetHostResource(instance, resource);
+  std::vector<PPPVideoCapture_Buffer> buffers(buffer_count);
+  const PPB_Core* core = static_cast<const PPB_Core*>(
+      dispatcher->GetLocalInterface(PPB_CORE_INTERFACE));
+  DCHECK(core);
+  for (uint32_t i = 0; i < buffer_count; ++i) {
+    // We need to take a ref on the resource now. The browser may drop
+    // references once we return from here, but we're sending an asynchronous
+    // message. The plugin side takes ownership of that reference.
+    core->AddRefResource(resources[i]);
+    buffers[i].resource.SetHostResource(instance, resources[i]);
+    {
+      EnterResourceNoLock<PPB_Buffer_API> enter(resources[i], true);
+      DCHECK(enter.succeeded());
+      PP_Bool result = enter.object()->Describe(&buffers[i].size);
+      DCHECK(result);
+    }
+    {
+      EnterResourceNoLock<PPB_BufferTrusted_API> enter(resources[i], true);
+      DCHECK(enter.succeeded());
+      int handle;
+      int32_t result = enter.object()->GetSharedMemory(&handle);
+      DCHECK(result == PP_OK);
+      // TODO(piman/brettw): Change trusted interface to return a PP_FileHandle,
+      // those casts are ugly.
+      base::PlatformFile platform_file =
+#if defined(OS_WIN)
+          reinterpret_cast<HANDLE>(static_cast<intptr_t>(handle));
+#elif defined(OS_POSIX)
+          handle;
+#else
+#error Not implemented.
+#endif
+      buffers[i].handle =
+          dispatcher->ShareHandleWithRemote(platform_file, false);
+    }
+  }
+  dispatcher->Send(new PpapiMsg_PPPVideoCapture_OnDeviceInfo(
+      INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV, host_resource, *info, buffers));
+}
+
+void OnStatus(PP_Instance instance, PP_Resource resource, uint32_t status) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+  HostResource host_resource;
+  host_resource.SetHostResource(instance, resource);
+  dispatcher->Send(new PpapiMsg_PPPVideoCapture_OnStatus(
+      INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV, host_resource, status));
+}
+
+void OnError(PP_Instance instance, PP_Resource resource, uint32_t error_code) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+  HostResource host_resource;
+  host_resource.SetHostResource(instance, resource);
+  dispatcher->Send(new PpapiMsg_PPPVideoCapture_OnError(
+      INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV, host_resource, error_code));
+}
+
+void OnBufferReady(PP_Instance instance,
+                   PP_Resource resource,
+                   uint32_t buffer) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher) {
+    NOTREACHED();
+    return;
+  }
+  HostResource host_resource;
+  host_resource.SetHostResource(instance, resource);
+  dispatcher->Send(new PpapiMsg_PPPVideoCapture_OnBufferReady(
+      INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV, host_resource, buffer));
+}
+
+PPP_VideoCapture_Dev ppp_video_capture = {
+  OnDeviceInfo,
+  OnStatus,
+  OnError,
+  OnBufferReady
+};
+
+}  // namespace
+
+class VideoCapture : public ppapi::thunk::PPB_VideoCapture_API,
+                     public PluginResource {
+ public:
+  VideoCapture(const HostResource& resource);
+  virtual ~VideoCapture();
+
+  // Resource overrides.
+  virtual VideoCapture* AsVideoCapture() OVERRIDE;
+
+  // ResourceObjectBase overrides.
+  virtual ppapi::thunk::PPB_VideoCapture_API* AsPPB_VideoCapture_API() OVERRIDE;
+
+  // PPB_VideoCapture_API implementation.
+  virtual int32_t StartCapture(
+      const PP_VideoCaptureDeviceInfo_Dev& requested_info,
+      uint32_t buffer_count) {
+    switch (status_) {
+      case PP_VIDEO_CAPTURE_STATUS_STARTING:
+      case PP_VIDEO_CAPTURE_STATUS_STARTED:
+      case PP_VIDEO_CAPTURE_STATUS_PAUSED:
+      default:
+        return PP_ERROR_FAILED;
+      case PP_VIDEO_CAPTURE_STATUS_STOPPED:
+      case PP_VIDEO_CAPTURE_STATUS_STOPPING:
+        break;
+    }
+    status_ = PP_VIDEO_CAPTURE_STATUS_STARTING;
+    GetDispatcher()->Send(new PpapiHostMsg_PPBVideoCapture_StartCapture(
+        INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV, host_resource(),
+        requested_info, buffer_count));
+    return PP_OK;
+  }
+
+  virtual int32_t ReuseBuffer(uint32_t buffer) {
+    if (buffer >= buffer_in_use_.size() || !buffer_in_use_[buffer])
+      return PP_ERROR_BADARGUMENT;
+    GetDispatcher()->Send(new PpapiHostMsg_PPBVideoCapture_ReuseBuffer(
+        INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV, host_resource(), buffer));
+    return PP_OK;
+  }
+
+  virtual int32_t StopCapture() {
+    switch (status_) {
+      case PP_VIDEO_CAPTURE_STATUS_STOPPED:
+      case PP_VIDEO_CAPTURE_STATUS_STOPPING:
+      default:
+        return PP_ERROR_FAILED;
+      case PP_VIDEO_CAPTURE_STATUS_STARTING:
+      case PP_VIDEO_CAPTURE_STATUS_STARTED:
+      case PP_VIDEO_CAPTURE_STATUS_PAUSED:
+        break;
+    }
+    buffer_in_use_.clear();
+    status_ = PP_VIDEO_CAPTURE_STATUS_STOPPING;
+    GetDispatcher()->Send(new PpapiHostMsg_PPBVideoCapture_StopCapture(
+        INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV, host_resource()));
+    return PP_OK;
+  }
+
+  bool OnStatus(uint32_t status) {
+    switch (status) {
+      case PP_VIDEO_CAPTURE_STATUS_STARTING:
+      case PP_VIDEO_CAPTURE_STATUS_STOPPING:
+      default:
+        // Those states are not sent by the browser.
+        NOTREACHED();
+        return false;
+      case PP_VIDEO_CAPTURE_STATUS_STARTED:
+        switch (status_) {
+          case PP_VIDEO_CAPTURE_STATUS_STARTING:
+          case PP_VIDEO_CAPTURE_STATUS_PAUSED:
+            break;
+          default:
+            return false;
+        }
+        break;
+      case PP_VIDEO_CAPTURE_STATUS_PAUSED:
+        switch (status_) {
+          case PP_VIDEO_CAPTURE_STATUS_STARTING:
+          case PP_VIDEO_CAPTURE_STATUS_STARTED:
+            break;
+          default:
+            return false;
+        }
+        break;
+      case PP_VIDEO_CAPTURE_STATUS_STOPPED:
+        if (status_ != PP_VIDEO_CAPTURE_STATUS_STOPPING)
+          return false;
+        break;
+    }
+    status_ = status;
+    return true;
+  }
+
+  void set_status(uint32_t status) { status_ = status; }
+
+  void SetBufferCount(size_t count) {
+    buffer_in_use_ = std::vector<bool>(count);
+  }
+  void SetBufferInUse(uint32_t buffer) {
+    DCHECK(buffer < buffer_in_use_.size());
+    buffer_in_use_[buffer] = true;
+  }
+
+ private:
+  uint32_t status_;
+  std::vector<bool> buffer_in_use_;
+  DISALLOW_COPY_AND_ASSIGN(VideoCapture);
+};
+
+VideoCapture::VideoCapture(const HostResource& resource)
+    : PluginResource(resource),
+      status_(PP_VIDEO_CAPTURE_STATUS_STOPPED) {
+}
+
+VideoCapture::~VideoCapture() {
+}
+
+VideoCapture* VideoCapture::AsVideoCapture() {
+  return this;
+}
+
+ppapi::thunk::PPB_VideoCapture_API* VideoCapture::AsPPB_VideoCapture_API() {
+  return this;
+}
+
+PPB_VideoCapture_Proxy::PPB_VideoCapture_Proxy(Dispatcher* dispatcher,
+                                               const void* target_interface)
+    : InterfaceProxy(dispatcher, target_interface) {
+}
+
+PPB_VideoCapture_Proxy::~PPB_VideoCapture_Proxy() {
+}
+
+// static
+const InterfaceProxy::Info* PPB_VideoCapture_Proxy::GetInfo() {
+  static const Info info = {
+    ppapi::thunk::GetPPB_VideoCapture_Thunk(),
+    PPB_VIDEO_CAPTURE_DEV_INTERFACE,
+    INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV,
+    false,
+    &CreatePPBVideoCaptureProxy,
+  };
+  return &info;
+}
+
+// static
+PP_Resource PPB_VideoCapture_Proxy::CreateProxyResource(PP_Instance instance) {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return 0;
+
+  HostResource result;
+  dispatcher->Send(new PpapiHostMsg_PPBVideoCapture_Create(
+      INTERFACE_ID_PPB_VIDEO_CAPTURE_DEV, instance, &result));
+  if (result.is_null())
+    return 0;
+
+  linked_ptr<VideoCapture> object(new VideoCapture(result));
+  return PluginResourceTracker::GetInstance()->AddResource(object);
+}
+
+bool PPB_VideoCapture_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPB_VideoCapture_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_Create, OnMsgCreate)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_StartCapture,
+                        OnMsgStartCapture)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_ReuseBuffer,
+                        OnMsgReuseBuffer)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBVideoCapture_StopCapture,
+                        OnMsgStopCapture)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  // TODO(brettw) handle bad messages!
+  return handled;
+}
+
+void PPB_VideoCapture_Proxy::OnMsgCreate(PP_Instance instance,
+                                         HostResource* result_resource) {
+  HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return;
+  PP_Resource resource = ppb_video_capture_target()->Create(instance);
+  result_resource->SetHostResource(instance, resource);
+}
+
+void PPB_VideoCapture_Proxy::OnMsgStartCapture(
+    const HostResource& resource,
+    const PP_VideoCaptureDeviceInfo_Dev& info,
+    uint32_t buffers) {
+  EnterHostFromHostResource<PPB_VideoCapture_API> enter(resource);
+  if (enter.succeeded())
+    enter.object()->StartCapture(info, buffers);
+}
+
+void PPB_VideoCapture_Proxy::OnMsgReuseBuffer(const HostResource& resource,
+                                              uint32_t buffer) {
+  EnterHostFromHostResource<PPB_VideoCapture_API> enter(resource);
+  if (enter.succeeded())
+    enter.object()->ReuseBuffer(buffer);
+}
+
+void PPB_VideoCapture_Proxy::OnMsgStopCapture(const HostResource& resource) {
+  EnterHostFromHostResource<PPB_VideoCapture_API> enter(resource);
+  if (enter.succeeded())
+    enter.object()->StopCapture();
+}
+
+PPP_VideoCapture_Proxy::PPP_VideoCapture_Proxy(Dispatcher* dispatcher,
+                                               const void* target_interface)
+    : InterfaceProxy(dispatcher, target_interface) {
+}
+
+PPP_VideoCapture_Proxy::~PPP_VideoCapture_Proxy() {
+}
+
+// static
+const InterfaceProxy::Info* PPP_VideoCapture_Proxy::GetInfo() {
+  static const Info info = {
+    &ppp_video_capture,
+    PPP_VIDEO_CAPTURE_DEV_INTERFACE,
+    INTERFACE_ID_PPP_VIDEO_CAPTURE_DEV,
+    false,
+    &CreatePPPVideoCaptureProxy,
+  };
+  return &info;
+}
+
+bool PPP_VideoCapture_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPP_VideoCapture_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPVideoCapture_OnDeviceInfo,
+                        OnMsgOnDeviceInfo)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPVideoCapture_OnStatus, OnMsgOnStatus)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPVideoCapture_OnError, OnMsgOnError)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPPVideoCapture_OnBufferReady,
+                        OnMsgOnBufferReady)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  // TODO(brettw) handle bad messages!
+  return handled;
+}
+
+void PPP_VideoCapture_Proxy::OnMsgOnDeviceInfo(
+    const HostResource& host_resource,
+    const PP_VideoCaptureDeviceInfo_Dev& info,
+    const std::vector<PPPVideoCapture_Buffer>& buffers) {
+  EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_target() || enter.failed())
+    return;
+
+  scoped_array<PP_Resource> resources(new PP_Resource[buffers.size()]);
+  for (size_t i = 0; i < buffers.size(); ++i) {
+    // We assume that the browser created a new set of resources.
+    DCHECK(!tracker->PluginResourceForHostResource(buffers[i].resource));
+    resources[i] = PPB_Buffer_Proxy::AddProxyResource(buffers[i].resource,
+                                                      buffers[i].handle,
+                                                      buffers[i].size);
+  }
+  static_cast<VideoCapture*>(enter.object())->SetBufferCount(buffers.size());
+  ppp_video_capture_target()->OnDeviceInfo(
+      host_resource.instance(),
+      resource,
+      &info,
+      buffers.size(),
+      resources.get());
+  for (size_t i = 0; i < buffers.size(); ++i)
+    tracker->ReleaseResource(resources[i]);
+}
+
+void PPP_VideoCapture_Proxy::OnMsgOnStatus(const HostResource& host_resource,
+                                           uint32_t status) {
+  EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_target() || enter.failed())
+    return;
+
+  if (!static_cast<VideoCapture*>(enter.object())->OnStatus(status))
+    return;
+  ppp_video_capture_target()->OnStatus(
+      host_resource.instance(), resource, status);
+}
+
+void PPP_VideoCapture_Proxy::OnMsgOnError(const HostResource& host_resource,
+                                          uint32_t error_code) {
+  EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_target() || enter.failed())
+    return;
+  static_cast<VideoCapture*>(enter.object())->set_status(
+      PP_VIDEO_CAPTURE_STATUS_STOPPED);
+  ppp_video_capture_target()->OnError(
+      host_resource.instance(), resource, error_code);
+}
+
+void PPP_VideoCapture_Proxy::OnMsgOnBufferReady(
+    const HostResource& host_resource, uint32_t buffer) {
+  EnterPluginFromHostResource<PPB_VideoCapture_API> enter(host_resource);
+  PluginResourceTracker* tracker = PluginResourceTracker::GetInstance();
+  PP_Resource resource = tracker->PluginResourceForHostResource(host_resource);
+  if (!resource || !ppp_video_capture_target() || enter.failed())
+    return;
+  static_cast<VideoCapture*>(enter.object())->SetBufferInUse(buffer);
+  ppp_video_capture_target()->OnBufferReady(
+      host_resource.instance(), resource, buffer);
+}
+
+}  // namespace proxy
+}  // namespace pp
diff --git a/ppapi/proxy/ppb_video_capture_proxy.h b/ppapi/proxy/ppb_video_capture_proxy.h
new file mode 100644
index 0000000..34b6536
--- /dev/null
+++ b/ppapi/proxy/ppb_video_capture_proxy.h
@@ -0,0 +1,78 @@
+// 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.
+
+#ifndef PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
+#define PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
+
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/serialized_structs.h"
+
+struct PPB_VideoCapture_Dev;
+struct PPP_VideoCapture_Dev;
+struct PP_VideoCaptureDeviceInfo_Dev;
+
+namespace pp {
+namespace proxy {
+
+class HostResource;
+
+class PPB_VideoCapture_Proxy : public InterfaceProxy {
+ public:
+  PPB_VideoCapture_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  virtual ~PPB_VideoCapture_Proxy();
+
+  static const Info* GetInfo();
+
+  static PP_Resource CreateProxyResource(PP_Instance instance);
+
+  const PPB_VideoCapture_Dev* ppb_video_capture_target() const {
+    return static_cast<const PPB_VideoCapture_Dev*>(target_interface());
+  }
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+ private:
+  // Message handlers.
+  void OnMsgCreate(PP_Instance instance, HostResource* result_resource);
+  void OnMsgStartCapture(const HostResource& resource,
+                         const PP_VideoCaptureDeviceInfo_Dev& info,
+                         uint32_t buffers);
+  void OnMsgReuseBuffer(const HostResource& resource,
+                        uint32_t buffer);
+  void OnMsgStopCapture(const HostResource& resource);
+};
+
+class PPP_VideoCapture_Proxy : public InterfaceProxy {
+ public:
+  PPP_VideoCapture_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  virtual ~PPP_VideoCapture_Proxy();
+
+  static const Info* GetInfo();
+
+  const PPP_VideoCapture_Dev* ppp_video_capture_target() const {
+    return static_cast<const PPP_VideoCapture_Dev*>(target_interface());
+  }
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+ private:
+  // Message handlers.
+  void OnMsgOnDeviceInfo(const HostResource& video_capture,
+                         const PP_VideoCaptureDeviceInfo_Dev& info,
+                         const std::vector<PPPVideoCapture_Buffer>& buffers);
+  void OnMsgOnStatus(const HostResource& video_capture,
+                     uint32_t status);
+  void OnMsgOnError(const HostResource& video_capture,
+                    uint32_t error_code);
+  void OnMsgOnBufferReady(const HostResource& video_capture,
+                          uint32_t buffer);
+};
+
+}  // namespace proxy
+}  // namespace pp
+
+#endif  // PPAPI_PPB_VIDEO_CAPTURE_PROXY_H_
diff --git a/ppapi/proxy/resource_creation_proxy.cc b/ppapi/proxy/resource_creation_proxy.cc
index dd87a84..be65bcb 100644
--- a/ppapi/proxy/resource_creation_proxy.cc
+++ b/ppapi/proxy/resource_creation_proxy.cc
@@ -31,6 +31,7 @@
 #include "ppapi/proxy/ppb_surface_3d_proxy.h"
 #include "ppapi/proxy/ppb_url_loader_proxy.h"
 #include "ppapi/proxy/ppb_url_request_info_proxy.h"
+#include "ppapi/proxy/ppb_video_capture_proxy.h"
 #include "ppapi/proxy/ppb_video_decoder_proxy.h"
 #include "ppapi/shared_impl/font_impl.h"
 #include "ppapi/shared_impl/function_group_base.h"
@@ -293,8 +294,7 @@ PP_Resource ResourceCreationProxy::CreateURLRequestInfo(PP_Instance instance) {
 }
 
 PP_Resource ResourceCreationProxy::CreateVideoCapture(PP_Instance instance) {
-  NOTIMPLEMENTED();
-  return 0;
+  return PPB_VideoCapture_Proxy::CreateProxyResource(instance);
 }
 
 PP_Resource ResourceCreationProxy::CreateVideoDecoder(
diff --git a/ppapi/proxy/serialized_structs.h b/ppapi/proxy/serialized_structs.h
index 516d53d..dd83396 100644
--- a/ppapi/proxy/serialized_structs.h
+++ b/ppapi/proxy/serialized_structs.h
@@ -113,6 +113,12 @@ struct PPBURLLoader_UpdateProgress_Params {
   int64_t total_bytes_to_be_received;
 };
 
+struct PPPVideoCapture_Buffer {
+  pp::proxy::HostResource resource;
+  uint32_t size;
+  base::SharedMemoryHandle handle;
+};
+
 #if defined(OS_WIN)
 typedef HANDLE ImageHandle;
 #elif defined(OS_MACOSX)