Revert 110587 - Microphone support for Pepper Flash.

webkit/plugins/ppapi/audio_helper.cc

-// Copyright (c) 2011 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 "ppapi/c/pp_completion_callback.h"
-#include "webkit/plugins/ppapi/audio_helper.h"
-#include "webkit/plugins/ppapi/common.h"
-#include "webkit/plugins/ppapi/resource_helper.h"
-
-namespace webkit {
-namespace ppapi {
-
-// AudioHelper -----------------------------------------------------------------
-
-AudioHelper::AudioHelper()
-    : create_callback_pending_(false),
-      shared_memory_size_for_create_callback_(0) {
-  create_callback_ = PP_MakeCompletionCallback(NULL, NULL);
-}
-
-AudioHelper::~AudioHelper() {
-  // If the completion callback hasn't fired yet, do so here
-  // with an error condition.
-  if (create_callback_pending_) {
-    PP_RunCompletionCallback(&create_callback_, PP_ERROR_ABORTED);
-    create_callback_pending_ = false;
-  }
-}
-
-int32_t AudioHelper::GetSyncSocketImpl(int* sync_socket) {
-  if (socket_for_create_callback_.get()) {
-#if defined(OS_POSIX)
-    *sync_socket = socket_for_create_callback_->handle();
-#elif defined(OS_WIN)
-    *sync_socket = reinterpret_cast<int>(socket_for_create_callback_->handle());
-#else
-    #error "Platform not supported."
-#endif
-    return PP_OK;
-  }
-  return PP_ERROR_FAILED;
-}
-
-int32_t AudioHelper::GetSharedMemoryImpl(int* shm_handle, uint32_t* shm_size) {
-  if (shared_memory_for_create_callback_.get()) {
-#if defined(OS_POSIX)
-    *shm_handle = shared_memory_for_create_callback_->handle().fd;
-#elif defined(OS_WIN)
-    *shm_handle = reinterpret_cast<int>(
-        shared_memory_for_create_callback_->handle());
-#else
-    #error "Platform not supported."
-#endif
-    *shm_size = shared_memory_size_for_create_callback_;
-    return PP_OK;
-  }
-  return PP_ERROR_FAILED;
-}
-
-void AudioHelper::StreamCreated(
-    base::SharedMemoryHandle shared_memory_handle,
-    size_t shared_memory_size,
-    base::SyncSocket::Handle socket_handle) {
-  if (create_callback_pending_) {
-    // Trusted side of proxy can specify a callback to recieve handles. In
-    // this case we don't need to map any data or start the thread since it
-    // will be handled by the proxy.
-    shared_memory_for_create_callback_.reset(
-        new base::SharedMemory(shared_memory_handle, false));
-    shared_memory_size_for_create_callback_ = shared_memory_size;
-    socket_for_create_callback_.reset(new base::SyncSocket(socket_handle));
-
-    PP_RunCompletionCallback(&create_callback_, 0);
-    create_callback_pending_ = false;
-
-    // It might be nice to close the handles here to free up some system
-    // resources, but we can't since there's a race condition. The handles must
-    // be valid until they're sent over IPC, which is done from the I/O thread
-    // which will often get done after this code executes. We could do
-    // something more elaborate like an ACK from the plugin or post a task to
-    // the I/O thread and back, but this extra complexity doesn't seem worth it
-    // just to clean up these handles faster.
-  } else {
-    OnSetStreamInfo(shared_memory_handle, shared_memory_size, socket_handle);
-  }
-}
-
-void AudioHelper::SetCallbackInfo(bool create_callback_pending,
-                                  PP_CompletionCallback create_callback) {
-  create_callback_pending_ = create_callback_pending;
-  create_callback_ = create_callback;
-}
-
-}  // namespace ppapi
-}  // namespace webkit