ppapi/proxy/media_stream_track_resource_base.cc

   1 // Copyright 2014 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/media_stream_track_resource_base.h"
   6
   7 #include "base/logging.h"
   8 #include "ppapi/proxy/ppapi_messages.h"
   9
  10 namespace ppapi {
  11 namespace proxy {
  12
  13 MediaStreamTrackResourceBase::MediaStreamTrackResourceBase(
  14     Connection connection,
  15     PP_Instance instance,
  16     int pending_renderer_id,
  17     const std::string& id)
  18     : PluginResource(connection, instance),
  19       frame_buffer_(this),
  20       id_(id),
  21       has_ended_(false) {
  22   AttachToPendingHost(RENDERER, pending_renderer_id);
  23 }
  24
  25 MediaStreamTrackResourceBase::~MediaStreamTrackResourceBase() {
  26 }
  27
  28 void MediaStreamTrackResourceBase::SendEnqueueFrameMessageToHost(
  29     int32_t index) {
  30   DCHECK_GE(index, 0);
  31   DCHECK_LT(index, frame_buffer()->number_of_frames());
  32   Post(RENDERER, PpapiHostMsg_MediaStreamTrack_EnqueueFrame(index));
  33 }
  34
  35 void MediaStreamTrackResourceBase::OnReplyReceived(
  36     const ResourceMessageReplyParams& params,
  37     const IPC::Message& msg) {
  38   IPC_BEGIN_MESSAGE_MAP(MediaStreamTrackResourceBase, msg)
  39     PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
  40         PpapiPluginMsg_MediaStreamTrack_InitFrames, OnPluginMsgInitFrames)
  41     PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL(
  42         PpapiPluginMsg_MediaStreamTrack_EnqueueFrame, OnPluginMsgEnqueueFrame)
  43     PPAPI_DISPATCH_PLUGIN_RESOURCE_CALL_UNHANDLED(
  44         PluginResource::OnReplyReceived(params, msg))
  45   IPC_END_MESSAGE_MAP()
  46 }
  47
  48 void MediaStreamTrackResourceBase::CloseInternal() {
  49   if (!has_ended_) {
  50     Post(RENDERER, PpapiHostMsg_MediaStreamTrack_Close());
  51     has_ended_ = true;
  52   }
  53 }
  54
  55 void MediaStreamTrackResourceBase::OnPluginMsgInitFrames(
  56     const ResourceMessageReplyParams& params,
  57     int32_t number_of_frames,
  58     int32_t frame_size) {
  59   base::SharedMemoryHandle shm_handle = base::SharedMemory::NULLHandle();
  60   params.TakeSharedMemoryHandleAtIndex(0, &shm_handle);
  61   frame_buffer_.SetFrames(number_of_frames, frame_size,
  62       scoped_ptr<base::SharedMemory>(new base::SharedMemory(shm_handle, true)),
  63       false);
  64 }
  65
  66 void MediaStreamTrackResourceBase::OnPluginMsgEnqueueFrame(
  67     const ResourceMessageReplyParams& params,
  68     int32_t index) {
  69   frame_buffer_.EnqueueFrame(index);
  70 }
  71
  72 }  // namespace proxy
  73 }  // namespace ppapi