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// Copyright (c) 2017 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 "content/renderer/pepper/pepper_audio_output_host.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "content/common/pepper_file_util.h"
#include "content/renderer/pepper/pepper_audio_controller.h"
#include "content/renderer/pepper/pepper_media_device_manager.h"
#include "content/renderer/pepper/pepper_platform_audio_output_dev.h"
#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
#include "content/renderer/pepper/plugin_instance_throttler_impl.h"
#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
#include "content/renderer/render_frame_impl.h"
#include "ipc/ipc_message.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/host/dispatch_host_message.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/serialized_structs.h"
namespace content {
PepperAudioOutputHost::PepperAudioOutputHost(RendererPpapiHostImpl* host,
PP_Instance instance,
PP_Resource resource)
: ResourceHost(host->GetPpapiHost(), instance, resource),
renderer_ppapi_host_(host),
audio_output_(nullptr),
playback_throttled_(false),
enumeration_helper_(this,
PepperMediaDeviceManager::GetForRenderFrame(
host->GetRenderFrameForInstance(pp_instance())),
PP_DEVICETYPE_DEV_AUDIOOUTPUT,
host->GetDocumentURL(instance)) {
PepperPluginInstanceImpl* plugin_instance =
static_cast<PepperPluginInstanceImpl*>(
PepperPluginInstance::Get(pp_instance()));
if (plugin_instance && plugin_instance->throttler())
plugin_instance->throttler()->AddObserver(this);
}
PepperAudioOutputHost::~PepperAudioOutputHost() {
PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
PepperPluginInstance::Get(pp_instance()));
if (instance) {
if (instance->throttler()) {
instance->throttler()->RemoveObserver(this);
}
instance->audio_controller().RemoveInstance(this);
}
Close();
}
int32_t PepperAudioOutputHost::OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) {
int32_t result = PP_ERROR_FAILED;
if (enumeration_helper_.HandleResourceMessage(msg, context, &result))
return result;
PPAPI_BEGIN_MESSAGE_MAP(PepperAudioOutputHost, msg)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioOutput_Open, OnOpen)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioOutput_StartOrStop,
OnStartOrStop)
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_AudioOutput_Close, OnClose)
PPAPI_END_MESSAGE_MAP()
return PP_ERROR_FAILED;
}
void PepperAudioOutputHost::StreamCreated(
base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size,
base::SyncSocket::Handle socket) {
OnOpenComplete(PP_OK, shared_memory_handle, shared_memory_size, socket);
}
void PepperAudioOutputHost::StreamCreationFailed() {
OnOpenComplete(PP_ERROR_FAILED, base::SharedMemoryHandle(), 0,
base::SyncSocket::kInvalidHandle);
}
void PepperAudioOutputHost::SetVolume(double volume) {
if (audio_output_)
audio_output_->SetVolume(volume);
}
int32_t PepperAudioOutputHost::OnOpen(ppapi::host::HostMessageContext* context,
const std::string& device_id,
PP_AudioSampleRate sample_rate,
uint32_t sample_frame_count) {
if (open_context_.is_valid())
return PP_ERROR_INPROGRESS;
if (audio_output_)
return PP_ERROR_FAILED;
GURL document_url = renderer_ppapi_host_->GetDocumentURL(pp_instance());
if (!document_url.is_valid())
return PP_ERROR_FAILED;
// When it is done, we'll get called back on StreamCreated() or
// StreamCreationFailed().
audio_output_ = PepperPlatformAudioOutputDev::Create(
renderer_ppapi_host_->GetRenderFrameForInstance(pp_instance())
->GetRoutingID(),
device_id, document_url, static_cast<int>(sample_rate),
static_cast<int>(sample_frame_count), this);
if (audio_output_) {
open_context_ = context->MakeReplyMessageContext();
return PP_OK_COMPLETIONPENDING;
} else {
return PP_ERROR_FAILED;
}
}
int32_t PepperAudioOutputHost::OnStartOrStop(
ppapi::host::HostMessageContext* /* context */,
bool playback) {
if (!audio_output_)
return PP_ERROR_FAILED;
PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
PepperPluginInstance::Get(pp_instance()));
if (playback) {
// If plugin is in power saver mode, defer audio IPC communication.
if (instance && instance->throttler() &&
instance->throttler()->power_saver_enabled()) {
instance->throttler()->NotifyAudioThrottled();
playback_throttled_ = true;
return PP_TRUE;
}
if (instance)
instance->audio_controller().AddInstance(this);
audio_output_->StartPlayback();
} else {
if (instance)
instance->audio_controller().RemoveInstance(this);
audio_output_->StopPlayback();
}
return PP_OK;
}
int32_t PepperAudioOutputHost::OnClose(
ppapi::host::HostMessageContext* /* context */) {
Close();
return PP_OK;
}
void PepperAudioOutputHost::OnOpenComplete(
int32_t result,
base::SharedMemoryHandle shared_memory_handle,
size_t shared_memory_size,
base::SyncSocket::Handle socket_handle) {
// Make sure the handles are cleaned up.
base::SyncSocket scoped_socket(socket_handle);
base::SharedMemory scoped_shared_memory(shared_memory_handle, false);
if (!open_context_.is_valid()) {
NOTREACHED();
return;
}
ppapi::proxy::SerializedHandle serialized_socket_handle(
ppapi::proxy::SerializedHandle::SOCKET);
ppapi::proxy::SerializedHandle serialized_shared_memory_handle(
ppapi::proxy::SerializedHandle::SHARED_MEMORY);
if (result == PP_OK) {
IPC::PlatformFileForTransit temp_socket =
IPC::InvalidPlatformFileForTransit();
base::SharedMemoryHandle temp_shmem;
result = GetRemoteHandles(scoped_socket, scoped_shared_memory, &temp_socket,
&temp_shmem);
serialized_socket_handle.set_socket(temp_socket);
serialized_shared_memory_handle.set_shmem(temp_shmem, shared_memory_size);
}
// Send all the values, even on error. This simplifies some of our cleanup
// code since the handles will be in the other process and could be
// inconvenient to clean up. Our IPC code will automatically handle this for
// us, as long as the remote side always closes the handles it receives, even
// in the failure case.
open_context_.params.AppendHandle(serialized_socket_handle);
open_context_.params.AppendHandle(serialized_shared_memory_handle);
SendOpenReply(result);
}
int32_t PepperAudioOutputHost::GetRemoteHandles(
const base::SyncSocket& socket,
const base::SharedMemory& shared_memory,
IPC::PlatformFileForTransit* remote_socket_handle,
base::SharedMemoryHandle* remote_shared_memory_handle) {
*remote_socket_handle =
renderer_ppapi_host_->ShareHandleWithRemote(socket.handle(), false);
if (*remote_socket_handle == IPC::InvalidPlatformFileForTransit())
return PP_ERROR_FAILED;
*remote_shared_memory_handle =
renderer_ppapi_host_->ShareSharedMemoryHandleWithRemote(
shared_memory.handle());
if (!base::SharedMemory::IsHandleValid(*remote_shared_memory_handle))
return PP_ERROR_FAILED;
return PP_OK;
}
void PepperAudioOutputHost::Close() {
if (!audio_output_)
return;
audio_output_->ShutDown();
audio_output_ = nullptr;
if (open_context_.is_valid())
SendOpenReply(PP_ERROR_ABORTED);
}
void PepperAudioOutputHost::SendOpenReply(int32_t result) {
open_context_.params.set_result(result);
host()->SendReply(open_context_, PpapiPluginMsg_AudioOutput_OpenReply());
open_context_ = ppapi::host::ReplyMessageContext();
}
void PepperAudioOutputHost::OnThrottleStateChange() {
PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
PepperPluginInstance::Get(pp_instance()));
if (playback_throttled_ && instance && instance->throttler() &&
!instance->throttler()->power_saver_enabled()) {
// If we have become unthrottled, and we have a pending playback,
// start it.
StartDeferredPlayback();
}
}
void PepperAudioOutputHost::StartDeferredPlayback() {
if (!audio_output_)
return;
DCHECK(playback_throttled_);
playback_throttled_ = false;
PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
PepperPluginInstance::Get(pp_instance()));
if (instance)
instance->audio_controller().AddInstance(this);
audio_output_->StartPlayback();
}
} // namespace content
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