d72031cee3
Upintegrate the android at home TX and RX players developed in the ICS_AAH branch. Change-Id: I8247d3702e30d8b0e215b31a92675d8ab28dccbb Signed-off-by: John Grossman <johngro@google.com>
87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "LibAAH_RTP"
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#include <utils/Log.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <unistd.h>
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#include "pipe_event.h"
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namespace android {
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PipeEvent::PipeEvent() {
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pipe_[0] = -1;
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pipe_[1] = -1;
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// Create the pipe.
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if (pipe(pipe_) >= 0) {
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// Set non-blocking mode on the read side of the pipe so we can
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// easily drain it whenever we wakeup.
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fcntl(pipe_[0], F_SETFL, O_NONBLOCK);
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} else {
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ALOGE("Failed to create pipe event %d %d %d",
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pipe_[0], pipe_[1], errno);
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pipe_[0] = -1;
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pipe_[1] = -1;
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}
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}
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PipeEvent::~PipeEvent() {
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if (pipe_[0] >= 0) {
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close(pipe_[0]);
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}
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if (pipe_[1] >= 0) {
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close(pipe_[1]);
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}
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}
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void PipeEvent::clearPendingEvents() {
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char drain_buffer[16];
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while (read(pipe_[0], drain_buffer, sizeof(drain_buffer)) > 0) {
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// No body.
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}
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}
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bool PipeEvent::wait(int timeout) {
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struct pollfd wait_fd;
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wait_fd.fd = getWakeupHandle();
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wait_fd.events = POLLIN;
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wait_fd.revents = 0;
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int res = poll(&wait_fd, 1, timeout);
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if (res < 0) {
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ALOGE("Wait error in PipeEvent; sleeping to prevent overload!");
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usleep(1000);
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}
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return (res > 0);
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}
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void PipeEvent::setEvent() {
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char foo = 'q';
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write(pipe_[1], &foo, 1);
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}
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} // namespace android
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