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 "content/renderer/pepper/pepper_video_destination_host.h" 6 7#include "base/time/time.h" 8#include "content/public/renderer/renderer_ppapi_host.h" 9#include "content/renderer/pepper/ppb_image_data_impl.h" 10#include "ppapi/c/pp_errors.h" 11#include "ppapi/host/dispatch_host_message.h" 12#include "ppapi/host/host_message_context.h" 13#include "ppapi/host/ppapi_host.h" 14#include "ppapi/proxy/ppapi_messages.h" 15#include "ppapi/thunk/enter.h" 16#include "ppapi/thunk/ppb_image_data_api.h" 17 18using ppapi::host::HostMessageContext; 19using ppapi::host::ReplyMessageContext; 20 21namespace content { 22 23PepperVideoDestinationHost::PepperVideoDestinationHost(RendererPpapiHost* host, 24 PP_Instance instance, 25 PP_Resource resource) 26 : ResourceHost(host->GetPpapiHost(), instance, resource), 27 renderer_ppapi_host_(host), 28 weak_factory_(this) {} 29 30PepperVideoDestinationHost::~PepperVideoDestinationHost() {} 31 32int32_t PepperVideoDestinationHost::OnResourceMessageReceived( 33 const IPC::Message& msg, 34 HostMessageContext* context) { 35 PPAPI_BEGIN_MESSAGE_MAP(PepperVideoDestinationHost, msg) 36 PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_VideoDestination_Open, 37 OnHostMsgOpen) 38 PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_VideoDestination_PutFrame, 39 OnHostMsgPutFrame) 40 PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_VideoDestination_Close, 41 OnHostMsgClose) 42 PPAPI_END_MESSAGE_MAP() 43 return PP_ERROR_FAILED; 44} 45 46int32_t PepperVideoDestinationHost::OnHostMsgOpen( 47 HostMessageContext* context, 48 const std::string& stream_url) { 49 GURL gurl(stream_url); 50 if (!gurl.is_valid()) 51 return PP_ERROR_BADARGUMENT; 52 53 FrameWriterInterface* frame_writer = NULL; 54 if (!VideoDestinationHandler::Open( 55 NULL /* registry */, gurl.spec(), &frame_writer)) 56 return PP_ERROR_FAILED; 57 frame_writer_.reset(frame_writer); 58 59 ReplyMessageContext reply_context = context->MakeReplyMessageContext(); 60 reply_context.params.set_result(PP_OK); 61 host()->SendReply(reply_context, PpapiPluginMsg_VideoDestination_OpenReply()); 62 return PP_OK_COMPLETIONPENDING; 63} 64 65int32_t PepperVideoDestinationHost::OnHostMsgPutFrame( 66 HostMessageContext* context, 67 const ppapi::HostResource& image_data_resource, 68 PP_TimeTicks timestamp) { 69 ppapi::thunk::EnterResourceNoLock<ppapi::thunk::PPB_ImageData_API> enter( 70 image_data_resource.host_resource(), true); 71 if (enter.failed()) 72 return PP_ERROR_BADRESOURCE; 73 PPB_ImageData_Impl* image_data_impl = 74 static_cast<PPB_ImageData_Impl*>(enter.object()); 75 76 if (!PPB_ImageData_Impl::IsImageDataFormatSupported( 77 image_data_impl->format())) 78 return PP_ERROR_BADARGUMENT; 79 80 if (!frame_writer_.get()) 81 return PP_ERROR_FAILED; 82 83 // Convert PP_TimeTicks (a double, in seconds) to a TimeDelta (int64, 84 // microseconds) and then to a video timestamp (int64, nanoseconds). All times 85 // are relative to the Unix Epoch so don't subtract it to get a delta. 86 base::TimeDelta time_delta = 87 base::Time::FromDoubleT(timestamp) - base::Time(); 88 int64_t timestamp_ns = 89 time_delta.InMicroseconds() * base::Time::kNanosecondsPerMicrosecond; 90 frame_writer_->PutFrame(image_data_impl, timestamp_ns); 91 92 return PP_OK; 93} 94 95int32_t PepperVideoDestinationHost::OnHostMsgClose( 96 HostMessageContext* context) { 97 frame_writer_.reset(NULL); 98 return PP_OK; 99} 100 101} // namespace content 102