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// Copyright (c) 2012 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_input_host.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
#include "ipc/ipc_message.h"
#include "media/audio/shared_memory_util.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"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebElement.h"
#include "third_party/WebKit/public/web/WebPluginContainer.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance_impl.h"
namespace content {
namespace {
base::PlatformFile ConvertSyncSocketHandle(const base::SyncSocket& socket) {
return socket.handle();
}
base::PlatformFile ConvertSharedMemoryHandle(
const base::SharedMemory& shared_memory) {
#if defined(OS_POSIX)
return shared_memory.handle().fd;
#elif defined(OS_WIN)
return shared_memory.handle();
#else
#error "Platform not supported."
#endif
}
} // namespace
PepperAudioInputHost::PepperAudioInputHost(
RendererPpapiHostImpl* host,
PP_Instance instance,
PP_Resource resource)
: ResourceHost(host->GetPpapiHost(), instance, resource),
renderer_ppapi_host_(host),
audio_input_(NULL),
enumeration_helper_(this, this, PP_DEVICETYPE_DEV_AUDIOCAPTURE) {
}
PepperAudioInputHost::~PepperAudioInputHost() {
Close();
}
int32_t PepperAudioInputHost::OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) {
int32_t result = PP_ERROR_FAILED;
if (enumeration_helper_.HandleResourceMessage(msg, context, &result))
return result;
IPC_BEGIN_MESSAGE_MAP(PepperAudioInputHost, msg)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioInput_Open, OnOpen)
PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioInput_StartOrStop,
OnStartOrStop);
PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_AudioInput_Close,
OnClose);
IPC_END_MESSAGE_MAP()
return PP_ERROR_FAILED;
}
void PepperAudioInputHost::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 PepperAudioInputHost::StreamCreationFailed() {
OnOpenComplete(PP_ERROR_FAILED, base::SharedMemory::NULLHandle(), 0,
base::SyncSocket::kInvalidHandle);
}
webkit::ppapi::PluginDelegate* PepperAudioInputHost::GetPluginDelegate() {
webkit::ppapi::PluginInstanceImpl* instance =
renderer_ppapi_host_->GetPluginInstanceImpl(pp_instance());
if (instance)
return instance->delegate();
return NULL;
}
int32_t PepperAudioInputHost::OnOpen(
ppapi::host::HostMessageContext* context,
const std::string& device_id,
PP_AudioSampleRate sample_rate,
uint32_t sample_frame_count) {
if (open_context_)
return PP_ERROR_INPROGRESS;
if (audio_input_)
return PP_ERROR_FAILED;
webkit::ppapi::PluginDelegate* plugin_delegate = GetPluginDelegate();
if (!plugin_delegate)
return PP_ERROR_FAILED;
webkit::ppapi::PluginInstanceImpl* instance =
renderer_ppapi_host_->GetPluginInstanceImpl(pp_instance());
if (!instance)
return PP_ERROR_FAILED;
// When it is done, we'll get called back on StreamCreated() or
// StreamCreationFailed().
audio_input_ = plugin_delegate->CreateAudioInput(
device_id, instance->container()->element().document().url(),
sample_rate, sample_frame_count, this);
if (audio_input_) {
open_context_.reset(new ppapi::host::ReplyMessageContext(
context->MakeReplyMessageContext()));
return PP_OK_COMPLETIONPENDING;
} else {
return PP_ERROR_FAILED;
}
}
int32_t PepperAudioInputHost::OnStartOrStop(
ppapi::host::HostMessageContext* /* context */,
bool capture) {
if (!audio_input_)
return PP_ERROR_FAILED;
if (capture)
audio_input_->StartCapture();
else
audio_input_->StopCapture();
return PP_OK;
}
int32_t PepperAudioInputHost::OnClose(
ppapi::host::HostMessageContext* /* context */) {
Close();
return PP_OK;
}
void PepperAudioInputHost::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_) {
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 = base::SharedMemory::NULLHandle();
result = GetRemoteHandles(
scoped_socket, scoped_shared_memory, &temp_socket, &temp_shmem);
serialized_socket_handle.set_socket(temp_socket);
// Note that we must call TotalSharedMemorySizeInBytes() because extra space
// in shared memory is allocated for book-keeping, so the actual size of the
// shared memory buffer is larger than |shared_memory_size|. When sending to
// NaCl, NaClIPCAdapter expects this size to match the size of the full
// shared memory buffer.
serialized_shared_memory_handle.set_shmem(
temp_shmem, media::TotalSharedMemorySizeInBytes(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.set_result(result);
open_context_->params.AppendHandle(serialized_socket_handle);
open_context_->params.AppendHandle(serialized_shared_memory_handle);
host()->SendReply(*open_context_, PpapiPluginMsg_AudioInput_OpenReply());
open_context_.reset();
}
int32_t PepperAudioInputHost::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(
ConvertSyncSocketHandle(socket), false);
if (*remote_socket_handle == IPC::InvalidPlatformFileForTransit())
return PP_ERROR_FAILED;
*remote_shared_memory_handle = renderer_ppapi_host_->ShareHandleWithRemote(
ConvertSharedMemoryHandle(shared_memory), false);
if (*remote_shared_memory_handle == IPC::InvalidPlatformFileForTransit())
return PP_ERROR_FAILED;
return PP_OK;
}
void PepperAudioInputHost::Close() {
if (!audio_input_)
return;
audio_input_->ShutDown();
audio_input_ = NULL;
if (open_context_) {
open_context_->params.set_result(PP_ERROR_ABORTED);
host()->SendReply(*open_context_, PpapiPluginMsg_AudioInput_OpenReply());
open_context_.reset();
}
}
} // namespace content
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