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
18 using ppapi::host::HostMessageContext;
19 using ppapi::host::ReplyMessageContext;
20
21 namespace content {
22
PepperVideoDestinationHost(RendererPpapiHost * host,PP_Instance instance,PP_Resource resource)23 PepperVideoDestinationHost::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
~PepperVideoDestinationHost()30 PepperVideoDestinationHost::~PepperVideoDestinationHost() {}
31
OnResourceMessageReceived(const IPC::Message & msg,HostMessageContext * context)32 int32_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
OnHostMsgOpen(HostMessageContext * context,const std::string & stream_url)46 int32_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
OnHostMsgPutFrame(HostMessageContext * context,const ppapi::HostResource & image_data_resource,PP_TimeTicks timestamp)65 int32_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
OnHostMsgClose(HostMessageContext * context)95 int32_t PepperVideoDestinationHost::OnHostMsgClose(
96 HostMessageContext* context) {
97 frame_writer_.reset(NULL);
98 return PP_OK;
99 }
100
101 } // namespace content
102