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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/browser/renderer_host/media/audio_input_sync_writer.h"
#include <algorithm>
#include "base/process_util.h"
#include "base/shared_memory.h"
AudioInputSyncWriter::AudioInputSyncWriter(base::SharedMemory* shared_memory)
: shared_memory_(shared_memory) {
}
AudioInputSyncWriter::~AudioInputSyncWriter() {}
void AudioInputSyncWriter::UpdateRecordedBytes(uint32 bytes) {
socket_->Send(&bytes, sizeof(bytes));
}
uint32 AudioInputSyncWriter::Write(const void* data, uint32 size) {
uint32 write_size = std::min(size, shared_memory_->created_size());
// Copy audio input samples from recorded data to shared memory.
memcpy(shared_memory_->memory(), data, write_size);
return write_size;
}
void AudioInputSyncWriter::Close() {
socket_->Close();
}
bool AudioInputSyncWriter::Init() {
socket_.reset(new base::SyncSocket());
foreign_socket_.reset(new base::SyncSocket());
return base::SyncSocket::CreatePair(socket_.get(), foreign_socket_.get());
}
#if defined(OS_WIN)
bool AudioInputSyncWriter::PrepareForeignSocketHandle(
base::ProcessHandle process_handle,
base::SyncSocket::Handle* foreign_handle) {
::DuplicateHandle(GetCurrentProcess(), foreign_socket_->handle(),
process_handle, foreign_handle,
0, FALSE, DUPLICATE_SAME_ACCESS);
return (*foreign_handle != 0);
}
#else
bool AudioInputSyncWriter::PrepareForeignSocketHandle(
base::ProcessHandle process_handle,
base::FileDescriptor* foreign_handle) {
foreign_handle->fd = foreign_socket_->handle();
foreign_handle->auto_close = false;
return (foreign_handle->fd != -1);
}
#endif
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