cras/src/tests/control_rclient_unittest.cc

// Copyright (c) 2012 The Chromium OS 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 <gtest/gtest.h>
#include <stdio.h>
#include <unistd.h>

extern "C" {
#include "audio_thread.h"
#include "cras_bt_log.h"
#include "cras_main_thread_log.h"
#include "cras_messages.h"
#include "cras_rclient.h"
#include "cras_rstream.h"
#include "cras_system_state.h"

// Access to data structures and static functions.
#include "cras_control_rclient.c"
#include "cras_rclient_util.c"
}

//  Stub data.
static int audio_thread_config_global_remix_called;
static float audio_thread_config_global_remix_copy[CRAS_MAX_REMIX_CHANNELS *
                                                   CRAS_MAX_REMIX_CHANNELS];
static int cras_rstream_create_return;
static struct cras_rstream* cras_rstream_create_stream_out;
static int cras_iodev_attach_stream_retval;
static size_t cras_system_set_volume_value;
static int cras_system_set_volume_called;
static size_t cras_system_set_mute_value;
static int cras_system_set_mute_called;
static size_t cras_system_set_user_mute_value;
static int cras_system_set_user_mute_called;
static size_t cras_system_set_mute_locked_value;
static int cras_system_set_mute_locked_called;
static size_t cras_system_set_capture_mute_value;
static int cras_system_set_capture_mute_called;
static size_t cras_system_set_capture_mute_locked_value;
static int cras_system_set_capture_mute_locked_called;
static int cras_system_state_dump_snapshots_called;
static size_t cras_make_fd_nonblocking_called;
static audio_thread* iodev_get_thread_return;
static int stream_list_add_stream_return;
static unsigned int stream_list_add_stream_called;
static unsigned int stream_list_disconnect_stream_called;
static unsigned int cras_iodev_list_rm_input_called;
static unsigned int cras_iodev_list_rm_output_called;
static struct cras_audio_shm mock_shm;
static struct cras_rstream mock_rstream;
static size_t cras_observer_num_ops_registered;
static size_t cras_observer_register_notify_called;
static size_t cras_observer_add_called;
static void* cras_observer_add_context_value;
static struct cras_observer_client* cras_observer_add_return_value;
static size_t cras_observer_get_ops_called;
static struct cras_observer_ops cras_observer_ops_value;
static size_t cras_observer_set_ops_called;
static size_t cras_observer_ops_are_empty_called;
static struct cras_observer_ops cras_observer_ops_are_empty_empty_ops;
static size_t cras_observer_remove_called;

void ResetStubData() {
  audio_thread_config_global_remix_called = 0;
  memset(audio_thread_config_global_remix_copy, 0,
         sizeof(audio_thread_config_global_remix_copy));
  cras_rstream_create_return = 0;
  cras_rstream_create_stream_out = (struct cras_rstream*)NULL;
  cras_iodev_attach_stream_retval = 0;
  cras_system_set_volume_value = 0;
  cras_system_set_volume_called = 0;
  cras_system_set_mute_value = 0;
  cras_system_set_mute_called = 0;
  cras_system_set_user_mute_value = 0;
  cras_system_set_user_mute_called = 0;
  cras_system_set_mute_locked_value = 0;
  cras_system_set_mute_locked_called = 0;
  cras_system_set_capture_mute_value = 0;
  cras_system_set_capture_mute_called = 0;
  cras_system_set_capture_mute_locked_value = 0;
  cras_system_set_capture_mute_locked_called = 0;
  cras_system_state_dump_snapshots_called = 0;
  cras_make_fd_nonblocking_called = 0;
  iodev_get_thread_return = reinterpret_cast<audio_thread*>(0xad);
  stream_list_add_stream_return = 0;
  stream_list_add_stream_called = 0;
  stream_list_disconnect_stream_called = 0;
  cras_iodev_list_rm_output_called = 0;
  cras_iodev_list_rm_input_called = 0;
  cras_observer_num_ops_registered = 0;
  cras_observer_register_notify_called = 0;
  cras_observer_add_called = 0;
  cras_observer_add_return_value =
      reinterpret_cast<struct cras_observer_client*>(1);
  cras_observer_add_context_value = NULL;
  cras_observer_get_ops_called = 0;
  memset(&cras_observer_ops_value, 0, sizeof(cras_observer_ops_value));
  cras_observer_set_ops_called = 0;
  cras_observer_ops_are_empty_called = 0;
  memset(&cras_observer_ops_are_empty_empty_ops, 0,
         sizeof(cras_observer_ops_are_empty_empty_ops));
  cras_observer_remove_called = 0;
}

namespace {

TEST(RClientSuite, CreateSendMessage) {
  struct cras_rclient* rclient;
  int rc;
  struct cras_client_connected msg;
  int pipe_fds[2];

  ResetStubData();

  rc = pipe(pipe_fds);
  ASSERT_EQ(0, rc);

  rclient = cras_control_rclient_create(pipe_fds[1], 800);
  ASSERT_NE((void*)NULL, rclient);

  rc = read(pipe_fds[0], &msg, sizeof(msg));
  EXPECT_EQ(sizeof(msg), rc);
  EXPECT_EQ(CRAS_CLIENT_CONNECTED, msg.header.id);

  rclient->ops->destroy(rclient);
  close(pipe_fds[0]);
  close(pipe_fds[1]);
}

class RClientMessagesSuite : public testing::Test {
 protected:
  virtual void SetUp() {
    int rc;
    struct cras_client_connected msg;

    rc = pipe(pipe_fds_);
    if (rc < 0)
      return;
    rclient_ = cras_control_rclient_create(pipe_fds_[1], 1);
    rc = read(pipe_fds_[0], &msg, sizeof(msg));
    if (rc < 0)
      return;

    rstream_ = (struct cras_rstream*)calloc(1, sizeof(*rstream_));

    stream_id_ = 0x10002;
    connect_msg_.header.id = CRAS_SERVER_CONNECT_STREAM;
    connect_msg_.header.length = sizeof(connect_msg_);
    connect_msg_.proto_version = CRAS_PROTO_VER;
    connect_msg_.stream_type = CRAS_STREAM_TYPE_DEFAULT;
    connect_msg_.direction = CRAS_STREAM_OUTPUT;
    connect_msg_.stream_id = stream_id_;
    connect_msg_.buffer_frames = 480;
    connect_msg_.cb_threshold = 240;
    connect_msg_.flags = 0;
    connect_msg_.format.num_channels = 2;
    connect_msg_.format.frame_rate = 48000;
    connect_msg_.format.format = SND_PCM_FORMAT_S16_LE;
    connect_msg_.dev_idx = NO_DEVICE;
    connect_msg_.client_shm_size = 0;
    btlog = cras_bt_event_log_init();
    main_log = main_thread_event_log_init();
    ResetStubData();
  }

  virtual void TearDown() {
    rclient_->ops->destroy(rclient_);
    free(rstream_);
    close(pipe_fds_[0]);
    close(pipe_fds_[1]);
    cras_bt_event_log_deinit(btlog);
    main_thread_event_log_deinit(main_log);
  }

  void RegisterNotification(enum CRAS_CLIENT_MESSAGE_ID msg_id,
                            void* callback,
                            void** ops_address);

  struct cras_connect_message connect_msg_;
  struct cras_rclient* rclient_;
  struct cras_rstream* rstream_;
  size_t stream_id_;
  int pipe_fds_[2];
  int fd_;
};

TEST_F(RClientMessagesSuite, AudThreadAttachFail) {
  struct cras_client_stream_connected out_msg;
  int rc;

  cras_rstream_create_stream_out = rstream_;
  stream_list_add_stream_return = -EINVAL;

  fd_ = 100;
  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 &fd_, 1);
  EXPECT_EQ(0, rc);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(stream_id_, out_msg.stream_id);
  EXPECT_NE(0, out_msg.err);
  EXPECT_EQ(0, cras_iodev_list_rm_output_called);
  EXPECT_EQ(1, stream_list_add_stream_called);
  EXPECT_EQ(0, stream_list_disconnect_stream_called);
}

TEST_F(RClientMessagesSuite, ConnectMsgWithBadFd) {
  struct cras_client_stream_connected out_msg;
  int rc;

  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 NULL, 0);
  EXPECT_EQ(0, rc);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(stream_id_, out_msg.stream_id);
  EXPECT_NE(0, out_msg.err);
  EXPECT_EQ(stream_list_add_stream_called,
            stream_list_disconnect_stream_called);
}

TEST_F(RClientMessagesSuite, StreamConnectMessageValidDirection) {
  struct cras_client_stream_connected out_msg;
  int rc;
  int called = 0;

  for (int i = 0; i < CRAS_NUM_DIRECTIONS; i++) {
    connect_msg_.direction = static_cast<CRAS_STREAM_DIRECTION>(i);
    if (connect_msg_.direction == CRAS_STREAM_UNDEFINED)
      continue;
    called++;
    cras_rstream_create_stream_out = rstream_;
    cras_iodev_attach_stream_retval = 0;

    fd_ = 100;
    rc = rclient_->ops->handle_message_from_client(
        rclient_, &connect_msg_.header, &fd_, 1);
    EXPECT_EQ(0, rc);
    EXPECT_EQ(called, cras_make_fd_nonblocking_called);

    rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
    EXPECT_EQ(sizeof(out_msg), rc);
    EXPECT_EQ(stream_id_, out_msg.stream_id);
    EXPECT_EQ(0, out_msg.err);
    EXPECT_EQ(called, stream_list_add_stream_called);
    EXPECT_EQ(0, stream_list_disconnect_stream_called);
  }
}

TEST_F(RClientMessagesSuite, StreamConnectMessageInvalidDirection) {
  struct cras_client_stream_connected out_msg;
  int rc;

  connect_msg_.direction = CRAS_STREAM_UNDEFINED;
  cras_rstream_create_stream_out = rstream_;
  cras_iodev_attach_stream_retval = 0;

  fd_ = 100;
  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 &fd_, 1);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(0, cras_make_fd_nonblocking_called);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(stream_id_, out_msg.stream_id);
  EXPECT_EQ(-EINVAL, out_msg.err);
  EXPECT_EQ(0, stream_list_add_stream_called);
  EXPECT_EQ(0, stream_list_disconnect_stream_called);
}

TEST_F(RClientMessagesSuite, StreamConnectMessageInvalidClientId) {
  struct cras_client_stream_connected out_msg;
  int rc;

  connect_msg_.stream_id = 0x20002;  // stream_id with invalid client_id

  fd_ = 100;
  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 &fd_, 1);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(0, cras_make_fd_nonblocking_called);
  EXPECT_EQ(0, stream_list_add_stream_called);
  EXPECT_EQ(0, stream_list_disconnect_stream_called);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(-EINVAL, out_msg.err);
  EXPECT_EQ(connect_msg_.stream_id, out_msg.stream_id);
}

TEST_F(RClientMessagesSuite, SuccessReply) {
  struct cras_client_stream_connected out_msg;
  int rc;

  cras_rstream_create_stream_out = rstream_;
  cras_iodev_attach_stream_retval = 0;

  fd_ = 100;
  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 &fd_, 1);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_make_fd_nonblocking_called);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(stream_id_, out_msg.stream_id);
  EXPECT_EQ(0, out_msg.err);
  EXPECT_EQ(1, stream_list_add_stream_called);
  EXPECT_EQ(0, stream_list_disconnect_stream_called);
}

TEST_F(RClientMessagesSuite, SuccessCreateThreadReply) {
  struct cras_client_stream_connected out_msg;
  int rc;

  cras_rstream_create_stream_out = rstream_;
  cras_iodev_attach_stream_retval = 0;

  fd_ = 100;
  rc = rclient_->ops->handle_message_from_client(rclient_, &connect_msg_.header,
                                                 &fd_, 1);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_make_fd_nonblocking_called);

  rc = read(pipe_fds_[0], &out_msg, sizeof(out_msg));
  EXPECT_EQ(sizeof(out_msg), rc);
  EXPECT_EQ(stream_id_, out_msg.stream_id);
  EXPECT_EQ(0, out_msg.err);
  EXPECT_EQ(1, stream_list_add_stream_called);
  EXPECT_EQ(0, stream_list_disconnect_stream_called);
}

TEST_F(RClientMessagesSuite, SetVolume) {
  struct cras_set_system_volume msg;
  int rc;

  msg.header.id = CRAS_SERVER_SET_SYSTEM_VOLUME;
  msg.header.length = sizeof(msg);
  msg.volume = 66;

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_volume_called);
  EXPECT_EQ(66, cras_system_set_volume_value);
}

TEST_F(RClientMessagesSuite, SetMute) {
  struct cras_set_system_mute msg;
  int rc;

  msg.header.id = CRAS_SERVER_SET_SYSTEM_MUTE;
  msg.header.length = sizeof(msg);
  msg.mute = 1;

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_mute_called);
  EXPECT_EQ(1, cras_system_set_mute_value);

  msg.header.id = CRAS_SERVER_SET_SYSTEM_MUTE_LOCKED;
  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_mute_locked_called);
  EXPECT_EQ(1, cras_system_set_mute_locked_value);
}

TEST_F(RClientMessagesSuite, SetUserMute) {
  struct cras_set_system_mute msg;
  int rc;

  msg.header.id = CRAS_SERVER_SET_USER_MUTE;
  msg.header.length = sizeof(msg);
  msg.mute = 1;

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_user_mute_called);
  EXPECT_EQ(1, cras_system_set_user_mute_value);
}

TEST_F(RClientMessagesSuite, SetCaptureMute) {
  struct cras_set_system_mute msg;
  int rc;

  msg.header.id = CRAS_SERVER_SET_SYSTEM_CAPTURE_MUTE;
  msg.header.length = sizeof(msg);
  msg.mute = 1;

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_capture_mute_called);
  EXPECT_EQ(1, cras_system_set_capture_mute_value);

  msg.header.id = CRAS_SERVER_SET_SYSTEM_CAPTURE_MUTE_LOCKED;
  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_set_capture_mute_locked_called);
  EXPECT_EQ(1, cras_system_set_capture_mute_locked_value);
}

TEST_F(RClientMessagesSuite, DumpSnapshots) {
  struct cras_dump_snapshots msg;
  int rc;
  cras_fill_dump_snapshots(&msg);
  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, cras_system_state_dump_snapshots_called);
}

TEST_F(RClientMessagesSuite, ConfigGlobalRemix) {
  int rc;
  struct cras_config_global_remix msg;
  const int num_channels = 2;
  float coefficient[4] = {0.1, 0.2, 0.3, 0.4};
  cras_fill_config_global_remix_command(&msg, num_channels, coefficient,
                                        num_channels * num_channels);

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(1, audio_thread_config_global_remix_called);
  for (unsigned i = 0; i < (unsigned)num_channels * num_channels; i++) {
    EXPECT_EQ(audio_thread_config_global_remix_copy[i], coefficient[i]);
  }
}

void RClientMessagesSuite::RegisterNotification(
    enum CRAS_CLIENT_MESSAGE_ID msg_id,
    void* callback,
    void** ops_address) {
  struct cras_register_notification msg;
  int do_register = callback != NULL ? 1 : 0;
  int rc;

  cras_observer_register_notify_called++;

  cras_fill_register_notification_message(&msg, msg_id, do_register);
  EXPECT_EQ(msg.header.length, sizeof(msg));
  EXPECT_EQ(msg.header.id, CRAS_SERVER_REGISTER_NOTIFICATION);
  EXPECT_EQ(msg.do_register, do_register);
  EXPECT_EQ(msg.msg_id, msg_id);

  rc =
      rclient_->ops->handle_message_from_client(rclient_, &msg.header, NULL, 0);
  EXPECT_EQ(0, rc);
  EXPECT_EQ(cras_observer_register_notify_called, cras_observer_get_ops_called);
  EXPECT_EQ(cras_observer_register_notify_called,
            cras_observer_ops_are_empty_called);
  if (msg.do_register)
    cras_observer_num_ops_registered++;
  if (cras_observer_num_ops_registered == 1) {
    if (msg.do_register) {
      EXPECT_EQ(1, cras_observer_add_called);
      EXPECT_EQ(rclient_, cras_observer_add_context_value);
      EXPECT_EQ(rclient_->observer, cras_observer_add_return_value);
    } else {
      EXPECT_EQ(1, cras_observer_remove_called);
      EXPECT_EQ(rclient_->observer, (struct cras_observer_client*)NULL);
    }
  } else {
    EXPECT_EQ(cras_observer_register_notify_called - 1,
              cras_observer_set_ops_called);
  }
  if (!msg.do_register)
    cras_observer_num_ops_registered--;
  if (cras_observer_num_ops_registered) {
    EXPECT_EQ(callback, *ops_address);
  }
}

TEST_F(RClientMessagesSuite, RegisterStatusNotification) {
  /* First registration for this client. */
  RegisterNotification(CRAS_CLIENT_OUTPUT_VOLUME_CHANGED,
                       (void*)send_output_volume_changed,
                       (void**)&cras_observer_ops_value.output_volume_changed);

  /* Second registration for this client. */
  RegisterNotification(CRAS_CLIENT_CAPTURE_GAIN_CHANGED,
                       (void*)send_capture_gain_changed,
                       (void**)&cras_observer_ops_value.capture_gain_changed);

  /* Deregister output_volume. */
  RegisterNotification(CRAS_CLIENT_OUTPUT_VOLUME_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.output_volume_changed);

  /* Register/deregister all msg_ids. */

  RegisterNotification(CRAS_CLIENT_OUTPUT_MUTE_CHANGED,
                       (void*)send_output_mute_changed,
                       (void**)&cras_observer_ops_value.output_mute_changed);
  RegisterNotification(CRAS_CLIENT_OUTPUT_MUTE_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.output_mute_changed);

  RegisterNotification(CRAS_CLIENT_CAPTURE_MUTE_CHANGED,
                       (void*)send_capture_mute_changed,
                       (void**)&cras_observer_ops_value.capture_mute_changed);
  RegisterNotification(CRAS_CLIENT_CAPTURE_MUTE_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.capture_mute_changed);

  RegisterNotification(CRAS_CLIENT_NODES_CHANGED, (void*)send_nodes_changed,
                       (void**)&cras_observer_ops_value.nodes_changed);
  RegisterNotification(CRAS_CLIENT_NODES_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.nodes_changed);

  RegisterNotification(CRAS_CLIENT_ACTIVE_NODE_CHANGED,
                       (void*)send_active_node_changed,
                       (void**)&cras_observer_ops_value.active_node_changed);
  RegisterNotification(CRAS_CLIENT_ACTIVE_NODE_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.active_node_changed);

  RegisterNotification(
      CRAS_CLIENT_OUTPUT_NODE_VOLUME_CHANGED,
      (void*)send_output_node_volume_changed,
      (void**)&cras_observer_ops_value.output_node_volume_changed);
  RegisterNotification(
      CRAS_CLIENT_OUTPUT_NODE_VOLUME_CHANGED, NULL,
      (void**)&cras_observer_ops_value.output_node_volume_changed);

  RegisterNotification(
      CRAS_CLIENT_NODE_LEFT_RIGHT_SWAPPED_CHANGED,
      (void*)send_node_left_right_swapped_changed,
      (void**)&cras_observer_ops_value.node_left_right_swapped_changed);
  RegisterNotification(
      CRAS_CLIENT_NODE_LEFT_RIGHT_SWAPPED_CHANGED, NULL,
      (void**)&cras_observer_ops_value.node_left_right_swapped_changed);

  RegisterNotification(
      CRAS_CLIENT_INPUT_NODE_GAIN_CHANGED, (void*)send_input_node_gain_changed,
      (void**)&cras_observer_ops_value.input_node_gain_changed);
  RegisterNotification(
      CRAS_CLIENT_INPUT_NODE_GAIN_CHANGED, NULL,
      (void**)&cras_observer_ops_value.input_node_gain_changed);

  RegisterNotification(
      CRAS_CLIENT_NUM_ACTIVE_STREAMS_CHANGED,
      (void*)send_num_active_streams_changed,
      (void**)&cras_observer_ops_value.num_active_streams_changed);
  RegisterNotification(
      CRAS_CLIENT_NUM_ACTIVE_STREAMS_CHANGED, NULL,
      (void**)&cras_observer_ops_value.num_active_streams_changed);

  /* Deregister last. */
  RegisterNotification(CRAS_CLIENT_CAPTURE_GAIN_CHANGED, NULL,
                       (void**)&cras_observer_ops_value.capture_gain_changed);
}

TEST_F(RClientMessagesSuite, SendOutputVolumeChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_volume_changed* msg =
      (struct cras_client_volume_changed*)buf;
  const int32_t volume = 90;

  send_output_volume_changed(void_client, volume);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_OUTPUT_VOLUME_CHANGED);
  EXPECT_EQ(msg->volume, volume);
}

TEST_F(RClientMessagesSuite, SendOutputMuteChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_mute_changed* msg = (struct cras_client_mute_changed*)buf;
  const int muted = 1;
  const int user_muted = 0;
  const int mute_locked = 1;

  send_output_mute_changed(void_client, muted, user_muted, mute_locked);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_OUTPUT_MUTE_CHANGED);
  EXPECT_EQ(msg->muted, muted);
  EXPECT_EQ(msg->user_muted, user_muted);
  EXPECT_EQ(msg->mute_locked, mute_locked);
}

TEST_F(RClientMessagesSuite, SendCaptureMuteChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_mute_changed* msg = (struct cras_client_mute_changed*)buf;
  const int muted = 1;
  const int mute_locked = 0;

  send_capture_mute_changed(void_client, muted, mute_locked);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_CAPTURE_MUTE_CHANGED);
  EXPECT_EQ(msg->muted, muted);
  EXPECT_EQ(msg->mute_locked, mute_locked);
}

TEST_F(RClientMessagesSuite, SendNodesChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_nodes_changed* msg =
      (struct cras_client_nodes_changed*)buf;

  send_nodes_changed(void_client);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_NODES_CHANGED);
}

TEST_F(RClientMessagesSuite, SendActiveNodeChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_active_node_changed* msg =
      (struct cras_client_active_node_changed*)buf;
  const enum CRAS_STREAM_DIRECTION dir = CRAS_STREAM_INPUT;
  const cras_node_id_t node_id = 0x0001000200030004;

  send_active_node_changed(void_client, dir, node_id);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_ACTIVE_NODE_CHANGED);
  EXPECT_EQ(msg->direction, (int32_t)dir);
  EXPECT_EQ((uint64_t)msg->node_id, node_id);
}

TEST_F(RClientMessagesSuite, SendOutputNodeVolumeChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_node_value_changed* msg =
      (struct cras_client_node_value_changed*)buf;
  const cras_node_id_t node_id = 0x0001000200030004;
  const int32_t value = 90;

  send_output_node_volume_changed(void_client, node_id, value);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_OUTPUT_NODE_VOLUME_CHANGED);
  EXPECT_EQ(msg->node_id, node_id);
  EXPECT_EQ(msg->value, value);
}

TEST_F(RClientMessagesSuite, SendNodeLeftRightSwappedChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_node_value_changed* msg =
      (struct cras_client_node_value_changed*)buf;
  const cras_node_id_t node_id = 0x0001000200030004;
  const int32_t value = 0;

  send_node_left_right_swapped_changed(void_client, node_id, value);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_NODE_LEFT_RIGHT_SWAPPED_CHANGED);
  EXPECT_EQ(msg->node_id, node_id);
  EXPECT_EQ(msg->value, value);
}

TEST_F(RClientMessagesSuite, SendNodeInputNodeGainChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_node_value_changed* msg =
      (struct cras_client_node_value_changed*)buf;
  const cras_node_id_t node_id = 0x0001000200030004;
  const int32_t value = -19;

  send_input_node_gain_changed(void_client, node_id, value);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_INPUT_NODE_GAIN_CHANGED);
  EXPECT_EQ(msg->node_id, node_id);
  EXPECT_EQ(msg->value, value);
}

TEST_F(RClientMessagesSuite, SendNumActiveStreamsChanged) {
  void* void_client = reinterpret_cast<void*>(rclient_);
  char buf[1024];
  ssize_t rc;
  struct cras_client_num_active_streams_changed* msg =
      (struct cras_client_num_active_streams_changed*)buf;
  const enum CRAS_STREAM_DIRECTION dir = CRAS_STREAM_INPUT;
  const uint32_t num_active_streams = 3;

  send_num_active_streams_changed(void_client, dir, num_active_streams);
  rc = read(pipe_fds_[0], buf, sizeof(buf));
  ASSERT_EQ(rc, (ssize_t)sizeof(*msg));
  EXPECT_EQ(msg->header.id, CRAS_CLIENT_NUM_ACTIVE_STREAMS_CHANGED);
  EXPECT_EQ(msg->direction, (int32_t)dir);
  EXPECT_EQ(msg->num_active_streams, num_active_streams);
}

}  //  namespace

int main(int argc, char** argv) {
  ::testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}

/* stubs */
extern "C" {

struct cras_bt_event_log* btlog;
struct main_thread_event_log* main_log;

struct audio_thread* cras_iodev_list_get_audio_thread() {
  return iodev_get_thread_return;
}

void cras_iodev_list_add_active_node(enum CRAS_STREAM_DIRECTION dir,
                                     cras_node_id_t node_id) {}

void cras_iodev_list_rm_active_node(enum CRAS_STREAM_DIRECTION dir,
                                    cras_node_id_t node_id) {}

int audio_thread_rm_stream(audio_thread* thread, cras_rstream* stream) {
  return 0;
}

void audio_thread_add_output_dev(struct audio_thread* thread,
                                 struct cras_iodev* odev) {}

int audio_thread_dump_thread_info(struct audio_thread* thread,
                                  struct audio_debug_info* info) {
  return 0;
}

int audio_thread_suspend(struct audio_thread* thread) {
  return 0;
}

int audio_thread_resume(struct audio_thread* thread) {
  return 0;
}

int audio_thread_config_global_remix(struct audio_thread* thread,
                                     unsigned int num_channels,
                                     const float* coefficient) {
  audio_thread_config_global_remix_called++;
  memcpy(audio_thread_config_global_remix_copy, coefficient,
         num_channels * num_channels * sizeof(coefficient));
  return 0;
}

int audio_thread_set_aec_dump(struct audio_thread* thread,
                              cras_stream_id_t stream_id,
                              unsigned int start,
                              int fd) {
  return 0;
}

int audio_thread_event_log_shm_fd() {
  return -1;
}

#ifdef HAVE_WEBRTC_APM
void cras_apm_list_reload_aec_config() {}
#endif

void cras_system_set_bt_wbs_enabled(bool enabled) {}

const char* cras_config_get_socket_file_dir() {
  return CRAS_UT_TMPDIR;
}

int cras_rstream_create(struct cras_rstream_config* stream_config,
                        struct cras_rstream** stream_out) {
  *stream_out = cras_rstream_create_stream_out;
  return cras_rstream_create_return;
}

unsigned int cras_rstream_get_effects(const struct cras_rstream* stream) {
  return 0;
}

int cras_iodev_move_stream_type(uint32_t type, uint32_t index) {
  return 0;
}

int cras_iodev_list_rm_output(struct cras_iodev* output) {
  cras_iodev_list_rm_output_called++;
  return 0;
}

int cras_iodev_list_rm_input(struct cras_iodev* input) {
  cras_iodev_list_rm_input_called++;
  return 0;
}

int cras_server_disconnect_from_client_socket(int socket_fd) {
  return 0;
}

int cras_make_fd_nonblocking(int fd) {
  cras_make_fd_nonblocking_called++;
  return 0;
}

void cras_system_state_dump_snapshots() {
  cras_system_state_dump_snapshots_called++;
}

void cras_system_set_volume(size_t volume) {
  cras_system_set_volume_value = volume;
  cras_system_set_volume_called++;
}

//  From system_state.
void cras_system_set_mute(int mute) {
  cras_system_set_mute_value = mute;
  cras_system_set_mute_called++;
}
void cras_system_set_user_mute(int mute) {
  cras_system_set_user_mute_value = mute;
  cras_system_set_user_mute_called++;
}
void cras_system_set_mute_locked(int mute) {
  cras_system_set_mute_locked_value = mute;
  cras_system_set_mute_locked_called++;
}
void cras_system_set_capture_mute(int mute) {
  cras_system_set_capture_mute_value = mute;
  cras_system_set_capture_mute_called++;
}
void cras_system_set_capture_mute_locked(int mute) {
  cras_system_set_capture_mute_locked_value = mute;
  cras_system_set_capture_mute_locked_called++;
}

int cras_system_remove_alsa_card(size_t alsa_card_index) {
  return -1;
}

void cras_system_set_suspended(int suspended) {}

struct cras_server_state* cras_system_state_get_no_lock() {
  return NULL;
}

key_t cras_sys_state_shm_fd() {
  return 1;
}

void cras_dsp_reload_ini() {}

void cras_dsp_dump_info() {}

int cras_iodev_list_set_node_attr(cras_node_id_t id,
                                  enum ionode_attr attr,
                                  int value) {
  return 0;
}

void cras_iodev_list_select_node(enum CRAS_STREAM_DIRECTION direction,
                                 cras_node_id_t node_id) {}

void cras_iodev_list_add_test_dev(enum TEST_IODEV_TYPE type) {}

struct stream_list* cras_iodev_list_get_stream_list() {
  return NULL;
}

/* Handles sending a command to a test iodev. */
void cras_iodev_list_test_dev_command(unsigned int iodev_idx,
                                      enum CRAS_TEST_IODEV_CMD command,
                                      unsigned int data_len,
                                      const uint8_t* data) {}

void cras_iodev_list_configure_global_remix_converter(
    unsigned int num_channels,
    const float* coefficient) {}

int stream_list_add(struct stream_list* list,
                    struct cras_rstream_config* config,
                    struct cras_rstream** stream) {
  int ret;

  *stream = &mock_rstream;

  stream_list_add_stream_called++;
  ret = stream_list_add_stream_return;
  if (ret)
    stream_list_add_stream_return = -EINVAL;

  mock_rstream.shm = &mock_shm;
  mock_rstream.direction = config->direction;
  mock_rstream.stream_id = config->stream_id;

  return ret;
}

int stream_list_rm(struct stream_list* list, cras_stream_id_t id) {
  stream_list_disconnect_stream_called++;
  return 0;
}

int stream_list_rm_all_client_streams(struct stream_list* list,
                                      struct cras_rclient* rclient) {
  return 0;
}

int cras_send_with_fds(int sockfd,
                       const void* buf,
                       size_t len,
                       int* fd,
                       unsigned int num_fds) {
  return write(sockfd, buf, len);
}

char* cras_iodev_list_get_hotword_models(cras_node_id_t node_id) {
  return NULL;
}

int cras_iodev_list_set_hotword_model(cras_node_id_t id,
                                      const char* model_name) {
  return 0;
}

struct cras_observer_client* cras_observer_add(
    const struct cras_observer_ops* ops,
    void* context) {
  cras_observer_add_called++;
  cras_observer_add_context_value = context;
  memcpy(&cras_observer_ops_value, ops, sizeof(cras_observer_ops_value));
  return cras_observer_add_return_value;
}

void cras_observer_get_ops(const struct cras_observer_client* client,
                           struct cras_observer_ops* ops) {
  cras_observer_get_ops_called++;
  memcpy(ops, &cras_observer_ops_value, sizeof(*ops));
}

void cras_observer_set_ops(struct cras_observer_client* client,
                           const struct cras_observer_ops* ops) {
  cras_observer_set_ops_called++;
  memcpy(&cras_observer_ops_value, ops, sizeof(cras_observer_ops_value));
}

int cras_observer_ops_are_empty(const struct cras_observer_ops* ops) {
  cras_observer_ops_are_empty_called++;
  return memcmp(&cras_observer_ops_are_empty_empty_ops, ops,
                sizeof(cras_observer_ops_are_empty_empty_ops)) == 0;
}

void cras_observer_remove(struct cras_observer_client* client) {
  cras_observer_remove_called++;
}

bool cras_audio_format_valid(const struct cras_audio_format* fmt) {
  return true;
}

struct packet_status_logger* cras_hfp_ag_get_wbs_logger() {
  return NULL;
}

void detect_rtc_stream_pair(struct stream_list* list,
                            struct cras_rstream* stream) {
  return;
}

void cras_system_set_hotword_pause_at_suspend(bool pause) {}

}  // extern "C"