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361 lines
14 KiB
361 lines
14 KiB
/*
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* Copyright (C) 2020 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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#include <linux/input.h>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include <android-base/logging.h>
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#include <android-base/strings.h>
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#include <gflags/gflags.h>
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#include <libyuv.h>
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#include "common/libs/fs/shared_buf.h"
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#include "common/libs/fs/shared_fd.h"
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#include "common/libs/utils/files.h"
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#include "host/frontend/webrtc/audio_handler.h"
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#include "host/frontend/webrtc/connection_observer.h"
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#include "host/frontend/webrtc/display_handler.h"
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#include "host/frontend/webrtc/kernel_log_events_handler.h"
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#include "host/frontend/webrtc/lib/local_recorder.h"
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#include "host/frontend/webrtc/lib/streamer.h"
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#include "host/libs/audio_connector/server.h"
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#include "host/libs/config/cuttlefish_config.h"
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#include "host/libs/config/logging.h"
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#include "host/libs/confui/host_mode_ctrl.h"
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#include "host/libs/confui/host_server.h"
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#include "host/libs/screen_connector/screen_connector.h"
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DEFINE_int32(touch_fd, -1, "An fd to listen on for touch connections.");
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DEFINE_int32(keyboard_fd, -1, "An fd to listen on for keyboard connections.");
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DEFINE_int32(switches_fd, -1, "An fd to listen on for switch connections.");
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DEFINE_int32(frame_server_fd, -1, "An fd to listen on for frame updates");
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DEFINE_int32(kernel_log_events_fd, -1,
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"An fd to listen on for kernel log events.");
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DEFINE_int32(command_fd, -1, "An fd to listen to for control messages");
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DEFINE_string(action_servers, "",
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"A comma-separated list of server_name:fd pairs, "
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"where each entry corresponds to one custom action server.");
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DEFINE_bool(write_virtio_input, true,
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"Whether to send input events in virtio format.");
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DEFINE_int32(audio_server_fd, -1, "An fd to listen on for audio frames");
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using cuttlefish::AudioHandler;
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using cuttlefish::CfConnectionObserverFactory;
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using cuttlefish::DisplayHandler;
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using cuttlefish::KernelLogEventsHandler;
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using cuttlefish::webrtc_streaming::LocalRecorder;
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using cuttlefish::webrtc_streaming::Streamer;
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using cuttlefish::webrtc_streaming::StreamerConfig;
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class CfOperatorObserver
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: public cuttlefish::webrtc_streaming::OperatorObserver {
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public:
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virtual ~CfOperatorObserver() = default;
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virtual void OnRegistered() override {
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LOG(VERBOSE) << "Registered with Operator";
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}
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virtual void OnClose() override {
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LOG(ERROR) << "Connection with Operator unexpectedly closed";
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}
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virtual void OnError() override {
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LOG(ERROR) << "Error encountered in connection with Operator";
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}
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};
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static std::vector<std::pair<std::string, std::string>> ParseHttpHeaders(
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const std::string& path) {
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auto fd = cuttlefish::SharedFD::Open(path, O_RDONLY);
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if (!fd->IsOpen()) {
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LOG(WARNING) << "Unable to open operator (signaling server) headers file, "
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"connecting to the operator will probably fail: "
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<< fd->StrError();
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return {};
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}
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std::string raw_headers;
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auto res = cuttlefish::ReadAll(fd, &raw_headers);
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if (res < 0) {
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LOG(WARNING) << "Unable to open operator (signaling server) headers file, "
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"connecting to the operator will probably fail: "
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<< fd->StrError();
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return {};
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}
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std::vector<std::pair<std::string, std::string>> headers;
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std::size_t raw_index = 0;
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while (raw_index < raw_headers.size()) {
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auto colon_pos = raw_headers.find(':', raw_index);
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if (colon_pos == std::string::npos) {
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LOG(ERROR)
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<< "Expected to find ':' in each line of the operator headers file";
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break;
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}
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auto eol_pos = raw_headers.find('\n', colon_pos);
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if (eol_pos == std::string::npos) {
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eol_pos = raw_headers.size();
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}
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// If the file uses \r\n as line delimiters exclude the \r too.
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auto eov_pos = raw_headers[eol_pos - 1] == '\r'? eol_pos - 1: eol_pos;
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headers.emplace_back(
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raw_headers.substr(raw_index, colon_pos + 1 - raw_index),
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raw_headers.substr(colon_pos + 1, eov_pos - colon_pos - 1));
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raw_index = eol_pos + 1;
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}
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return headers;
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}
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std::unique_ptr<cuttlefish::AudioServer> CreateAudioServer() {
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cuttlefish::SharedFD audio_server_fd =
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cuttlefish::SharedFD::Dup(FLAGS_audio_server_fd);
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close(FLAGS_audio_server_fd);
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return std::make_unique<cuttlefish::AudioServer>(audio_server_fd);
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}
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int main(int argc, char** argv) {
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cuttlefish::DefaultSubprocessLogging(argv);
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::gflags::ParseCommandLineFlags(&argc, &argv, true);
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cuttlefish::InputSockets input_sockets;
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input_sockets.touch_server = cuttlefish::SharedFD::Dup(FLAGS_touch_fd);
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input_sockets.keyboard_server = cuttlefish::SharedFD::Dup(FLAGS_keyboard_fd);
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input_sockets.switches_server = cuttlefish::SharedFD::Dup(FLAGS_switches_fd);
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auto control_socket = cuttlefish::SharedFD::Dup(FLAGS_command_fd);
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close(FLAGS_touch_fd);
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close(FLAGS_keyboard_fd);
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close(FLAGS_switches_fd);
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close(FLAGS_command_fd);
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// Accepting on these sockets here means the device won't register with the
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// operator as soon as it could, but rather wait until crosvm's input display
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// devices have been initialized. That's OK though, because without those
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// devices there is no meaningful interaction the user can have with the
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// device.
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input_sockets.touch_client =
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cuttlefish::SharedFD::Accept(*input_sockets.touch_server);
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input_sockets.keyboard_client =
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cuttlefish::SharedFD::Accept(*input_sockets.keyboard_server);
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input_sockets.switches_client =
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cuttlefish::SharedFD::Accept(*input_sockets.switches_server);
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std::thread touch_accepter([&input_sockets]() {
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for (;;) {
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input_sockets.touch_client =
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cuttlefish::SharedFD::Accept(*input_sockets.touch_server);
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}
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});
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std::thread keyboard_accepter([&input_sockets]() {
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for (;;) {
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input_sockets.keyboard_client =
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cuttlefish::SharedFD::Accept(*input_sockets.keyboard_server);
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}
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});
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std::thread switches_accepter([&input_sockets]() {
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for (;;) {
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input_sockets.switches_client =
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cuttlefish::SharedFD::Accept(*input_sockets.switches_server);
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}
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});
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auto kernel_log_events_client =
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cuttlefish::SharedFD::Dup(FLAGS_kernel_log_events_fd);
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close(FLAGS_kernel_log_events_fd);
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auto cvd_config = cuttlefish::CuttlefishConfig::Get();
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auto instance = cvd_config->ForDefaultInstance();
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auto& host_mode_ctrl = cuttlefish::HostModeCtrl::Get();
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auto screen_connector_ptr = cuttlefish::DisplayHandler::ScreenConnector::Get(
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FLAGS_frame_server_fd, host_mode_ctrl);
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auto& screen_connector = *(screen_connector_ptr.get());
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// create confirmation UI service, giving host_mode_ctrl and
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// screen_connector
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// keep this singleton object alive until the webRTC process ends
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static auto& host_confui_server =
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cuttlefish::confui::HostServer::Get(host_mode_ctrl, screen_connector);
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StreamerConfig streamer_config;
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streamer_config.device_id = instance.webrtc_device_id();
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streamer_config.tcp_port_range = cvd_config->webrtc_tcp_port_range();
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streamer_config.udp_port_range = cvd_config->webrtc_udp_port_range();
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streamer_config.operator_server.addr = cvd_config->sig_server_address();
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streamer_config.operator_server.port = cvd_config->sig_server_port();
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streamer_config.operator_server.path = cvd_config->sig_server_path();
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streamer_config.operator_server.security =
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cvd_config->sig_server_strict()
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? WsConnection::Security::kStrict
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: WsConnection::Security::kAllowSelfSigned;
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if (!cvd_config->sig_server_headers_path().empty()) {
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streamer_config.operator_server.http_headers =
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ParseHttpHeaders(cvd_config->sig_server_headers_path());
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}
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KernelLogEventsHandler kernel_logs_event_handler(kernel_log_events_client);
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auto observer_factory = std::make_shared<CfConnectionObserverFactory>(
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input_sockets, &kernel_logs_event_handler, host_confui_server);
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auto streamer = Streamer::Create(streamer_config, observer_factory);
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CHECK(streamer) << "Could not create streamer";
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auto display_0 = streamer->AddDisplay(
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"display_0", screen_connector.ScreenWidth(0),
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screen_connector.ScreenHeight(0), cvd_config->dpi(), true);
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auto display_handler = std::shared_ptr<DisplayHandler>(
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new DisplayHandler(display_0, screen_connector));
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std::unique_ptr<cuttlefish::webrtc_streaming::LocalRecorder> local_recorder;
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if (cvd_config->record_screen()) {
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int recording_num = 0;
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std::string recording_path;
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do {
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recording_path = instance.PerInstancePath("recording/recording_");
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recording_path += std::to_string(recording_num);
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recording_path += ".webm";
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recording_num++;
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} while (cuttlefish::FileExists(recording_path));
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local_recorder = LocalRecorder::Create(recording_path);
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CHECK(local_recorder) << "Could not create local recorder";
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streamer->RecordDisplays(*local_recorder);
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display_handler->IncClientCount();
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}
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observer_factory->SetDisplayHandler(display_handler);
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streamer->SetHardwareSpec("CPUs", cvd_config->cpus());
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streamer->SetHardwareSpec("RAM", std::to_string(cvd_config->memory_mb()) + " mb");
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std::string user_friendly_gpu_mode;
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if (cvd_config->gpu_mode() == cuttlefish::kGpuModeGuestSwiftshader) {
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user_friendly_gpu_mode = "SwiftShader (Guest CPU Rendering)";
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} else if (cvd_config->gpu_mode() == cuttlefish::kGpuModeDrmVirgl) {
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user_friendly_gpu_mode = "VirglRenderer (Accelerated Host GPU Rendering)";
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} else if (cvd_config->gpu_mode() == cuttlefish::kGpuModeGfxStream) {
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user_friendly_gpu_mode = "Gfxstream (Accelerated Host GPU Rendering)";
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} else {
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user_friendly_gpu_mode = cvd_config->gpu_mode();
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}
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streamer->SetHardwareSpec("GPU Mode", user_friendly_gpu_mode);
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std::shared_ptr<AudioHandler> audio_handler;
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if (cvd_config->enable_audio()) {
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auto audio_stream = streamer->AddAudioStream("audio");
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auto audio_server = CreateAudioServer();
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auto audio_source = streamer->GetAudioSource();
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audio_handler = std::make_shared<AudioHandler>(std::move(audio_server),
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audio_stream, audio_source);
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}
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// Parse the -action_servers flag, storing a map of action server name -> fd
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std::map<std::string, int> action_server_fds;
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for (const std::string& action_server :
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android::base::Split(FLAGS_action_servers, ",")) {
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if (action_server.empty()) {
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continue;
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}
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const std::vector<std::string> server_and_fd =
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android::base::Split(action_server, ":");
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CHECK(server_and_fd.size() == 2)
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<< "Wrong format for action server flag: " << action_server;
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std::string server = server_and_fd[0];
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int fd = std::stoi(server_and_fd[1]);
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action_server_fds[server] = fd;
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}
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for (const auto& custom_action : cvd_config->custom_actions()) {
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if (custom_action.shell_command) {
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if (custom_action.buttons.size() != 1) {
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LOG(FATAL) << "Expected exactly one button for custom action command: "
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<< *(custom_action.shell_command);
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}
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const auto button = custom_action.buttons[0];
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streamer->AddCustomControlPanelButtonWithShellCommand(
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button.command, button.title, button.icon_name,
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*(custom_action.shell_command));
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} else if (custom_action.server) {
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if (action_server_fds.find(*(custom_action.server)) !=
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action_server_fds.end()) {
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LOG(INFO) << "Connecting to custom action server "
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<< *(custom_action.server);
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int fd = action_server_fds[*(custom_action.server)];
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cuttlefish::SharedFD custom_action_server = cuttlefish::SharedFD::Dup(fd);
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close(fd);
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if (custom_action_server->IsOpen()) {
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std::vector<std::string> commands_for_this_server;
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for (const auto& button : custom_action.buttons) {
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streamer->AddCustomControlPanelButton(button.command, button.title,
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button.icon_name);
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commands_for_this_server.push_back(button.command);
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}
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observer_factory->AddCustomActionServer(custom_action_server,
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commands_for_this_server);
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} else {
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LOG(ERROR) << "Error connecting to custom action server: "
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<< *(custom_action.server);
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}
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} else {
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LOG(ERROR) << "Custom action server not provided as command line flag: "
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<< *(custom_action.server);
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}
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} else if (!custom_action.device_states.empty()) {
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if (custom_action.buttons.size() != 1) {
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LOG(FATAL)
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<< "Expected exactly one button for custom action device states.";
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}
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const auto button = custom_action.buttons[0];
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streamer->AddCustomControlPanelButtonWithDeviceStates(
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button.command, button.title, button.icon_name,
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custom_action.device_states);
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}
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}
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std::shared_ptr<cuttlefish::webrtc_streaming::OperatorObserver> operator_observer(
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new CfOperatorObserver());
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streamer->Register(operator_observer);
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std::thread control_thread([control_socket, &local_recorder]() {
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if (!local_recorder) {
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return;
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}
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std::string message = "_";
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int read_ret;
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while ((read_ret = cuttlefish::ReadExact(control_socket, &message)) > 0) {
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LOG(VERBOSE) << "received control message: " << message;
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if (message[0] == 'C') {
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LOG(DEBUG) << "Finalizing screen recording...";
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local_recorder->Stop();
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LOG(INFO) << "Finalized screen recording.";
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message = "Y";
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cuttlefish::WriteAll(control_socket, message);
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}
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}
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LOG(DEBUG) << "control socket closed";
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});
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if (audio_handler) {
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audio_handler->Start();
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}
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host_confui_server.Start();
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display_handler->Loop();
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return 0;
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}
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