C++ pa_threaded_mainloop_get_api函数代码示例

int
audio_pa_init(void)
{
  pa_audio_mode_t *pam;
  audio_mode_t *am;

  TRACE(TRACE_DEBUG, "PA", "Headerversion: %s, library: %s",
	pa_get_headers_version(), pa_get_library_version());

  mainloop = pa_threaded_mainloop_new();
  api = pa_threaded_mainloop_get_api(mainloop);

  pa_threaded_mainloop_lock(mainloop);
  pa_threaded_mainloop_start(mainloop);
  pa_threaded_mainloop_unlock(mainloop);

  pam = calloc(1, sizeof(pa_audio_mode_t));
  am = &pam->am;
  am->am_multich_controls = 1;
  am->am_formats = 
    AM_FORMAT_PCM_STEREO | AM_FORMAT_PCM_5DOT1 | AM_FORMAT_PCM_7DOT1;
  am->am_sample_rates = AM_SR_ANY;
  am->am_title = strdup("Pulseaudio");
  am->am_id = strdup("pulseaudio");
  am->am_preferred_size = 1024;
  am->am_entry = pa_audio_start;
  am->am_float = 1;

  audio_mode_register(am);
  return 1;
}

/**
 * Create, set up and connect a context.
 *
 * Caller must lock the main loop.
 *
 * @return true on success, false on error
 */
static bool
pulse_output_setup_context(struct pulse_output *po, GError **error_r)
{
	assert(po != NULL);
	assert(po->mainloop != NULL);

	po->context = pa_context_new(pa_threaded_mainloop_get_api(po->mainloop),
				     MPD_PULSE_NAME);
	if (po->context == NULL) {
		g_set_error(error_r, pulse_output_quark(), 0,
			    "pa_context_new() has failed");
		return false;
	}

	pa_context_set_state_callback(po->context,
				      pulse_output_context_state_cb, po);
	pa_context_set_subscribe_callback(po->context,
					  pulse_output_subscribe_cb, po);

	if (!pulse_output_connect(po, error_r)) {
		pulse_output_delete_context(po);
		return false;
	}

	return true;
}

static void pulse_set_volume(int l, int r) {

    if (! connected)
        return;

    pa_threaded_mainloop_lock (mainloop);
    CHECK_DEAD_GOTO (fail, 1);

    /* sanitize output volumes. */
    l = CLAMP(l, 0, 100);
    r = CLAMP(r, 0, 100);

    if (!volume_valid || volume.channels !=  1) {
        volume.values[0] = ((pa_volume_t) l * PA_VOLUME_NORM + 50) / 100;
        volume.values[1] = ((pa_volume_t) r * PA_VOLUME_NORM + 50) / 100;
        volume.channels = 2;
    } else {
        volume.values[0] = ((pa_volume_t) MAX (l, r) * PA_VOLUME_NORM + 50) / 100;
        volume.channels = 1;
    }

    volume_valid = 1;

    if (connected && !volume_time_event) {
        struct timeval tv;
        pa_mainloop_api *api = pa_threaded_mainloop_get_api(mainloop);
        volume_time_event = api->time_new(api, pa_timeval_add(pa_gettimeofday(&tv), 100000), volume_time_cb, NULL);
    }

fail:
    if (connected)
        pa_threaded_mainloop_unlock(mainloop);
}

static BOOL tsmf_pulse_open(ITSMFAudioDevice *audio, const char *device)
{
	TSMFPulseAudioDevice *pulse = (TSMFPulseAudioDevice *) audio;
	if(device)
	{
		strcpy(pulse->device, device);
	}
	pulse->mainloop = pa_threaded_mainloop_new();
	if(!pulse->mainloop)
	{
		DEBUG_WARN("pa_threaded_mainloop_new failed");
		return FALSE;
	}
	pulse->context = pa_context_new(pa_threaded_mainloop_get_api(pulse->mainloop), "freerdp");
	if(!pulse->context)
	{
		DEBUG_WARN("pa_context_new failed");
		return FALSE;
	}
	pa_context_set_state_callback(pulse->context, tsmf_pulse_context_state_callback, pulse);
	if(tsmf_pulse_connect(pulse))
	{
		DEBUG_WARN("tsmf_pulse_connect failed");
		return FALSE;
	}
	DEBUG_TSMF("open device %s", pulse->device);
	return TRUE;
}

static int
tsmf_pulse_open(ITSMFAudioDevice * audio, const char * device)
{
	TSMFPulseAudioDevice * pulse = (TSMFPulseAudioDevice *) audio;

	if (device)
	{
		strcpy(pulse->device, device);
	}

	pulse->mainloop = pa_threaded_mainloop_new();
	if (!pulse->mainloop)
	{
		LLOGLN(0, ("tsmf_pulse_open: pa_threaded_mainloop_new failed"));
		return 1;
	}
	pulse->context = pa_context_new(pa_threaded_mainloop_get_api(pulse->mainloop), "freerdp");
	if (!pulse->context)
	{
		LLOGLN(0, ("tsmf_pulse_open: pa_context_new failed"));
		return 1;
	}
	pa_context_set_state_callback(pulse->context, tsmf_pulse_context_state_callback, pulse);
	if (tsmf_pulse_connect(pulse))
	{
		LLOGLN(0, ("tsmf_pulse_open: tsmf_pulse_connect failed"));
		return 1;
	}

	LLOGLN(0, ("tsmf_pulse_open: open device %s", pulse->device));
	return 0;
}

void guac_pa_start_stream(guac_client* client) {

    vnc_guac_client_data* client_data = (vnc_guac_client_data*) client->data;
    pa_context* context;

    guac_client_log_info(client, "Starting audio stream");
    guac_audio_stream_begin(client_data->audio,
                GUAC_VNC_AUDIO_RATE,
                GUAC_VNC_AUDIO_CHANNELS,
                GUAC_VNC_AUDIO_BPS);

    /* Init main loop */
    client_data->pa_mainloop = pa_threaded_mainloop_new();

    /* Create context */
    context = pa_context_new(
            pa_threaded_mainloop_get_api(client_data->pa_mainloop),
            "Guacamole Audio");

    /* Set up context */
    pa_context_set_state_callback(context, __context_state_callback, client);
    pa_context_connect(context, client_data->pa_servername,
            PA_CONTEXT_NOAUTOSPAWN, NULL);

    /* Start loop */
    pa_threaded_mainloop_start(client_data->pa_mainloop);

}

static void
moko_notify_init (MokoNotify *notify)
{
  MokoNotifyPrivate *priv;
  pa_threaded_mainloop *mainloop = NULL;
  pa_mainloop_api *mapi = NULL;

  priv = notify->priv = MOKO_NOTIFY_GET_PRIVATE (notify);

  priv->started = 0;
  priv->pac = NULL;

  /* Start up pulse audio */
  mainloop = pa_threaded_mainloop_new ();
  if (!mainloop)
  {
    g_warning ("Unable to create PulseAudio mainloop.");
    return;
  }
  mapi = pa_threaded_mainloop_get_api (mainloop);
  priv->pac = pa_context_new (mapi, "Openmoko Dialer");
  if (!priv->pac)
  {
    g_warning ("Could create the PulseAudio context");
    return;
  }
  pa_context_connect (priv->pac, NULL, 0, NULL);
  pa_threaded_mainloop_start (mainloop);
}

JNIEXPORT jlong JNICALL
Java_org_jitsi_impl_neomedia_pulseaudio_PA_threaded_1mainloop_1get_1api
    (JNIEnv *env, jclass clazz, jlong m)
{
    return
        (intptr_t)
            pa_threaded_mainloop_get_api((pa_threaded_mainloop *) (intptr_t) m);
}

/*
 * Public API.
 */
xmms_pulse *
xmms_pulse_backend_new (const char *server, const char *name,
                        int *rerror)
{
	xmms_pulse *p;
	int error = PA_ERR_INTERNAL;

	if (server && !*server) {
		if (rerror)
			*rerror = PA_ERR_INVALID;
		return NULL;
	}

	p = g_new0 (xmms_pulse, 1);
	if (!p)
		return NULL;

	p->volume = 100;

	p->mainloop = pa_threaded_mainloop_new ();
	if (!p->mainloop)
		goto fail;

	p->context = pa_context_new (pa_threaded_mainloop_get_api (p->mainloop), name);
	if (!p->context)
		goto fail;

	pa_context_set_state_callback (p->context, context_state_cb, p);

	if (pa_context_connect (p->context, server, 0, NULL) < 0) {
		error = pa_context_errno (p->context);
		goto fail;
	}

	pa_threaded_mainloop_lock (p->mainloop);

	if (pa_threaded_mainloop_start (p->mainloop) < 0)
		goto unlock_and_fail;

	/* Wait until the context is ready */
	pa_threaded_mainloop_wait (p->mainloop);

	if (pa_context_get_state (p->context) != PA_CONTEXT_READY) {
		error = pa_context_errno (p->context);
		goto unlock_and_fail;
	}

	pa_threaded_mainloop_unlock (p->mainloop);
	return p;

 unlock_and_fail:
	pa_threaded_mainloop_unlock (p->mainloop);
 fail:
	if (rerror)
		*rerror = error;
	xmms_pulse_backend_free (p);
	return NULL;
}

JNIEXPORT jlong JNICALL
Java_com_harrcharr_pulse_PulseContext_JNICreate(
		JNIEnv *jenv, jclass jcls, pa_threaded_mainloop *m) {
	dlog(0, "%d", m);
	pa_mainloop_api *api = pa_threaded_mainloop_get_api(m);
	pa_context *c = pa_context_new(api, "primary");

	return c;
}

static void init_pulse_context(){
	if (context==NULL){
		pa_loop=pa_threaded_mainloop_new();
		context=pa_context_new(pa_threaded_mainloop_get_api(pa_loop),NULL);
		pa_context_set_state_callback(context,state_notify,NULL);	
		pa_context_connect(context,NULL,0,NULL);
		pa_threaded_mainloop_start(pa_loop);
		atexit(uninit_pulse_context);
	}
}

void PulseAudioSinksManager::retrieveSinks()
{
    pa_mainloop_api *pa_mlapi;
    // Create a mainloop API and connection to the default server
    pa_ml.reset(pa_threaded_mainloop_new());
    pa_mlapi = pa_threaded_mainloop_get_api(pa_ml.get());
    pa_ctx.reset(pa_context_new(pa_mlapi, "QAudioSwitcher"));
    pa_context_set_state_callback(pa_ctx.get(), PulseAudioSinksManager::pulseAudioStateCallback, this);
    pa_context_connect(pa_ctx.get(), NULL, PA_CONTEXT_NOFAIL  , NULL);
    pa_threaded_mainloop_start(pa_ml.get());
}

WavegenClient::WavegenClient(std::string const& name)
	: name_(name)
{
	paMainLoop_ = pa_threaded_mainloop_new();
	pa_threaded_mainloop_set_name(paMainLoop_, name_.c_str());
	pa_threaded_mainloop_start(paMainLoop_);

	paMainApi_ = pa_threaded_mainloop_get_api(paMainLoop_);
	paContext_ = pa_context_new(paMainApi_, name_.c_str());
	pa_context_set_state_callback(paContext_, &WavegenClient::contextStateCallback, this);
}

int FreeRDPRdpsndDeviceEntry(PFREERDP_RDPSND_DEVICE_ENTRY_POINTS pEntryPoints)
{
	rdpsndPulsePlugin* pulse;
	RDP_PLUGIN_DATA* data;

	pulse = xnew(rdpsndPulsePlugin);

	pulse->device.Open = rdpsnd_pulse_open;
	pulse->device.FormatSupported = rdpsnd_pulse_format_supported;
	pulse->device.SetFormat = rdpsnd_pulse_set_format;
	pulse->device.SetVolume = rdpsnd_pulse_set_volume;
	pulse->device.Play = rdpsnd_pulse_play;
	pulse->device.Start = rdpsnd_pulse_start;
	pulse->device.Close = rdpsnd_pulse_close;
	pulse->device.Free = rdpsnd_pulse_free;

	data = pEntryPoints->plugin_data;
	if (data && strcmp((char*)data->data[0], "pulse") == 0)
	{
		if(data->data[1] && strlen((char*)data->data[1]) > 0) 
			pulse->device_name = xstrdup((char*)data->data[1]);
		else
			pulse->device_name = NULL;
	}

	pulse->dsp_context = freerdp_dsp_context_new();

	pulse->mainloop = pa_threaded_mainloop_new();
	if (!pulse->mainloop)
	{
		DEBUG_WARN("pa_threaded_mainloop_new failed");
		rdpsnd_pulse_free((rdpsndDevicePlugin*)pulse);
		return 1;
	}
	pulse->context = pa_context_new(pa_threaded_mainloop_get_api(pulse->mainloop), "freerdp");
	if (!pulse->context)
	{
		DEBUG_WARN("pa_context_new failed");
		rdpsnd_pulse_free((rdpsndDevicePlugin*)pulse);
		return 1;
	}
	pa_context_set_state_callback(pulse->context, rdpsnd_pulse_context_state_callback, pulse);
	if (!rdpsnd_pulse_connect((rdpsndDevicePlugin*)pulse))
	{
		DEBUG_WARN("rdpsnd_pulse_connect failed");
		rdpsnd_pulse_free((rdpsndDevicePlugin*)pulse);
		return 1;
	}

	pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, (rdpsndDevicePlugin*)pulse);

	return 0;
}

bool CPulseAE::Initialize()
{
  m_Volume = g_settings.m_fVolumeLevel;

  if ((m_MainLoop = pa_threaded_mainloop_new()) == NULL)
  {
    CLog::Log(LOGERROR, "PulseAudio: Failed to allocate main loop");
    return false;
  }

  if ((m_Context = pa_context_new(pa_threaded_mainloop_get_api(m_MainLoop), "XBMC")) == NULL)
  {
    CLog::Log(LOGERROR, "PulseAudio: Failed to allocate context");
    return false;
  }

  pa_context_set_state_callback(m_Context, ContextStateCallback, m_MainLoop);

  if (pa_context_connect(m_Context, NULL, (pa_context_flags_t)0, NULL) < 0)
  {
    CLog::Log(LOGERROR, "PulseAudio: Failed to connect context");
    return false;
  }

  pa_threaded_mainloop_lock(m_MainLoop);
  if (pa_threaded_mainloop_start(m_MainLoop) < 0)
  {
    CLog::Log(LOGERROR, "PulseAudio: Failed to start MainLoop");
    pa_threaded_mainloop_unlock(m_MainLoop);
    return false;
  }

  /* Wait until the context is ready */
  do
  {
    pa_threaded_mainloop_wait(m_MainLoop);
    CLog::Log(LOGDEBUG, "PulseAudio: Context %s", ContextStateToString(pa_context_get_state(m_Context)));
  }
  while (pa_context_get_state(m_Context) != PA_CONTEXT_READY && pa_context_get_state(m_Context) != PA_CONTEXT_FAILED);

  if (pa_context_get_state(m_Context) == PA_CONTEXT_FAILED)
  {
    CLog::Log(LOGERROR, "PulseAudio: Waited for the Context but it failed");
    pa_threaded_mainloop_unlock(m_MainLoop);
    return false;
  }

  pa_threaded_mainloop_unlock(m_MainLoop);
  return true;
}