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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ppapi/proxy/video_destination_resource.h"
      6 
      7 #include "base/bind.h"
      8 #include "ipc/ipc_message.h"
      9 #include "ppapi/c/pp_errors.h"
     10 #include "ppapi/c/private/pp_video_frame_private.h"
     11 #include "ppapi/proxy/ppapi_messages.h"
     12 #include "ppapi/shared_impl/ppapi_globals.h"
     13 #include "ppapi/shared_impl/resource_tracker.h"
     14 #include "ppapi/shared_impl/var.h"
     15 #include "ppapi/thunk/enter.h"
     16 #include "ppapi/thunk/ppb_image_data_api.h"
     17 
     18 using ppapi::thunk::EnterResourceNoLock;
     19 using ppapi::thunk::PPB_VideoDestination_Private_API;
     20 
     21 namespace ppapi {
     22 namespace proxy {
     23 
     24 VideoDestinationResource::VideoDestinationResource(
     25     Connection connection,
     26     PP_Instance instance)
     27     : PluginResource(connection, instance),
     28       is_open_(false) {
     29   SendCreate(RENDERER, PpapiHostMsg_VideoDestination_Create());
     30 }
     31 
     32 VideoDestinationResource::~VideoDestinationResource() {
     33 }
     34 
     35 PPB_VideoDestination_Private_API*
     36     VideoDestinationResource::AsPPB_VideoDestination_Private_API() {
     37   return this;
     38 }
     39 
     40 int32_t VideoDestinationResource::Open(
     41     const PP_Var& stream_url,
     42     scoped_refptr<TrackedCallback> callback) {
     43   if (TrackedCallback::IsPending(open_callback_))
     44     return PP_ERROR_INPROGRESS;
     45 
     46   open_callback_ = callback;
     47 
     48   scoped_refptr<StringVar> stream_url_var = StringVar::FromPPVar(stream_url);
     49   const uint32_t kMaxStreamIdSizeInBytes = 16384;
     50   if (!stream_url_var.get() ||
     51       stream_url_var->value().size() > kMaxStreamIdSizeInBytes)
     52     return PP_ERROR_BADARGUMENT;
     53   Call<PpapiPluginMsg_VideoDestination_OpenReply>(RENDERER,
     54       PpapiHostMsg_VideoDestination_Open(stream_url_var->value()),
     55       base::Bind(&VideoDestinationResource::OnPluginMsgOpenComplete, this));
     56   return PP_OK_COMPLETIONPENDING;
     57 }
     58 
     59 int32_t VideoDestinationResource::PutFrame(
     60     const PP_VideoFrame_Private& frame) {
     61   if (!is_open_)
     62     return PP_ERROR_FAILED;
     63 
     64   thunk::EnterResourceNoLock<thunk::PPB_ImageData_API> enter_image(
     65       frame.image_data, true);
     66   if (enter_image.failed())
     67     return PP_ERROR_BADRESOURCE;
     68 
     69   // Check that the PP_Instance matches.
     70   Resource* image_object =
     71       PpapiGlobals::Get()->GetResourceTracker()->GetResource(frame.image_data);
     72   if (!image_object || pp_instance() != image_object->pp_instance()) {
     73     Log(PP_LOGLEVEL_ERROR,
     74         "VideoDestinationPrivateResource.PutFrame: Bad image resource.");
     75     return PP_ERROR_BADRESOURCE;
     76   }
     77 
     78   Post(RENDERER,
     79        PpapiHostMsg_VideoDestination_PutFrame(image_object->host_resource(),
     80                                               frame.timestamp));
     81   return PP_OK;
     82 }
     83 
     84 void VideoDestinationResource::Close() {
     85   Post(RENDERER, PpapiHostMsg_VideoDestination_Close());
     86 
     87   if (TrackedCallback::IsPending(open_callback_))
     88     open_callback_->PostAbort();
     89 }
     90 
     91 void VideoDestinationResource::OnPluginMsgOpenComplete(
     92     const ResourceMessageReplyParams& params) {
     93   if (TrackedCallback::IsPending(open_callback_)) {
     94     int32_t result = params.result();
     95     if (result == PP_OK)
     96       is_open_ = true;
     97     open_callback_->Run(result);
     98   }
     99 }
    100 
    101 }  // namespace proxy
    102 }  // namespace ppapi
    103